diff options
Diffstat (limited to 'drivers')
721 files changed, 26486 insertions, 24502 deletions
diff --git a/drivers/Makefile b/drivers/Makefile index 1a109a6dd953..65670be6ff1a 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -5,7 +5,7 @@ # Rewritten to use lists instead of if-statements. # -obj-$(CONFIG_PCI) += pci/ +obj-$(CONFIG_PCI) += pci/ usb/ obj-$(CONFIG_PARISC) += parisc/ obj-y += video/ obj-$(CONFIG_ACPI) += acpi/ diff --git a/drivers/base/attribute_container.c b/drivers/base/attribute_container.c index 6b2eb6f39b4d..2a7d7ae83e1e 100644 --- a/drivers/base/attribute_container.c +++ b/drivers/base/attribute_container.c @@ -19,6 +19,8 @@ #include <linux/list.h> #include <linux/module.h> +#include "base.h" + /* This is a private structure used to tie the classdev and the * container .. it should never be visible outside this file */ struct internal_container { diff --git a/drivers/base/base.h b/drivers/base/base.h index 783752b68a9a..e3b548d46cff 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -1,3 +1,15 @@ + +/* initialisation functions */ + +extern int devices_init(void); +extern int buses_init(void); +extern int classes_init(void); +extern int firmware_init(void); +extern int platform_bus_init(void); +extern int system_bus_init(void); +extern int cpu_dev_init(void); +extern int attribute_container_init(void); + extern int bus_add_device(struct device * dev); extern void bus_remove_device(struct device * dev); diff --git a/drivers/base/class.c b/drivers/base/class.c index ce23dc8c18c5..c3e569730afe 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -99,7 +99,8 @@ struct class * class_get(struct class * cls) void class_put(struct class * cls) { - subsys_put(&cls->subsys); + if (cls) + subsys_put(&cls->subsys); } @@ -165,14 +166,25 @@ void class_unregister(struct class * cls) static void class_create_release(struct class *cls) { + pr_debug("%s called for %s\n", __FUNCTION__, cls->name); kfree(cls); } static void class_device_create_release(struct class_device *class_dev) { + pr_debug("%s called for %s\n", __FUNCTION__, class_dev->class_id); kfree(class_dev); } +/* needed to allow these devices to have parent class devices */ +static int class_device_create_hotplug(struct class_device *class_dev, + char **envp, int num_envp, + char *buffer, int buffer_size) +{ + pr_debug("%s called for %s\n", __FUNCTION__, class_dev->class_id); + return 0; +} + /** * class_create - create a struct class structure * @owner: pointer to the module that is to "own" this struct class @@ -301,10 +313,12 @@ static void class_dev_release(struct kobject * kobj) kfree(cd->devt_attr); cd->devt_attr = NULL; - if (cls->release) + if (cd->release) + cd->release(cd); + else if (cls->release) cls->release(cd); else { - printk(KERN_ERR "Device class '%s' does not have a release() function, " + printk(KERN_ERR "Class Device '%s' does not have a release() function, " "it is broken and must be fixed.\n", cd->class_id); WARN_ON(1); @@ -382,14 +396,18 @@ static int class_hotplug(struct kset *kset, struct kobject *kobj, char **envp, buffer = &buffer[length]; buffer_size -= length; - if (class_dev->class->hotplug) { - /* have the bus specific function add its stuff */ - retval = class_dev->class->hotplug (class_dev, envp, num_envp, - buffer, buffer_size); - if (retval) { - pr_debug ("%s - hotplug() returned %d\n", - __FUNCTION__, retval); - } + if (class_dev->hotplug) { + /* have the class device specific function add its stuff */ + retval = class_dev->hotplug(class_dev, envp, num_envp, + buffer, buffer_size); + if (retval) + pr_debug("class_dev->hotplug() returned %d\n", retval); + } else if (class_dev->class->hotplug) { + /* have the class specific function add its stuff */ + retval = class_dev->class->hotplug(class_dev, envp, num_envp, + buffer, buffer_size); + if (retval) + pr_debug("class->hotplug() returned %d\n", retval); } return retval; @@ -442,6 +460,13 @@ static ssize_t show_dev(struct class_device *class_dev, char *buf) return print_dev_t(buf, class_dev->devt); } +static ssize_t store_uevent(struct class_device *class_dev, + const char *buf, size_t count) +{ + kobject_hotplug(&class_dev->kobj, KOBJ_ADD); + return count; +} + void class_device_initialize(struct class_device *class_dev) { kobj_set_kset_s(class_dev, class_obj_subsys); @@ -469,34 +494,45 @@ static char *make_class_name(struct class_device *class_dev) int class_device_add(struct class_device *class_dev) { - struct class * parent = NULL; - struct class_interface * class_intf; + struct class *parent_class = NULL; + struct class_device *parent_class_dev = NULL; + struct class_interface *class_intf; char *class_name = NULL; - int error; + int error = -EINVAL; class_dev = class_device_get(class_dev); if (!class_dev) return -EINVAL; - if (!strlen(class_dev->class_id)) { - error = -EINVAL; + if (!strlen(class_dev->class_id)) goto register_done; - } - parent = class_get(class_dev->class); + parent_class = class_get(class_dev->class); + if (!parent_class) + goto register_done; + parent_class_dev = class_device_get(class_dev->parent); pr_debug("CLASS: registering class device: ID = '%s'\n", class_dev->class_id); /* first, register with generic layer. */ kobject_set_name(&class_dev->kobj, "%s", class_dev->class_id); - if (parent) - class_dev->kobj.parent = &parent->subsys.kset.kobj; + if (parent_class_dev) + class_dev->kobj.parent = &parent_class_dev->kobj; + else + class_dev->kobj.parent = &parent_class->subsys.kset.kobj; - if ((error = kobject_add(&class_dev->kobj))) + error = kobject_add(&class_dev->kobj); + if (error) goto register_done; /* add the needed attributes to this device */ + class_dev->uevent_attr.attr.name = "uevent"; + class_dev->uevent_attr.attr.mode = S_IWUSR; + class_dev->uevent_attr.attr.owner = parent_class->owner; + class_dev->uevent_attr.store = store_uevent; + class_device_create_file(class_dev, &class_dev->uevent_attr); + if (MAJOR(class_dev->devt)) { struct class_device_attribute *attr; attr = kzalloc(sizeof(*attr), GFP_KERNEL); @@ -505,12 +541,10 @@ int class_device_add(struct class_device *class_dev) kobject_del(&class_dev->kobj); goto register_done; } - attr->attr.name = "dev"; attr->attr.mode = S_IRUGO; - attr->attr.owner = parent->owner; + attr->attr.owner = parent_class->owner; attr->show = show_dev; - attr->store = NULL; class_device_create_file(class_dev, attr); class_dev->devt_attr = attr; } @@ -524,20 +558,23 @@ int class_device_add(struct class_device *class_dev) class_name); } + kobject_hotplug(&class_dev->kobj, KOBJ_ADD); + /* notify any interfaces this device is now here */ - if (parent) { - down(&parent->sem); - list_add_tail(&class_dev->node, &parent->children); - list_for_each_entry(class_intf, &parent->interfaces, node) + if (parent_class) { + down(&parent_class->sem); + list_add_tail(&class_dev->node, &parent_class->children); + list_for_each_entry(class_intf, &parent_class->interfaces, node) if (class_intf->add) - class_intf->add(class_dev); - up(&parent->sem); + class_intf->add(class_dev, class_intf); + up(&parent_class->sem); } - kobject_hotplug(&class_dev->kobj, KOBJ_ADD); register_done: - if (error && parent) - class_put(parent); + if (error) { + class_put(parent_class); + class_device_put(parent_class_dev); + } class_device_put(class_dev); kfree(class_name); return error; @@ -552,21 +589,28 @@ int class_device_register(struct class_device *class_dev) /** * class_device_create - creates a class device and registers it with sysfs * @cs: pointer to the struct class that this device should be registered to. + * @parent: pointer to the parent struct class_device of this new device, if any. * @dev: the dev_t for the char device to be added. * @device: a pointer to a struct device that is assiociated with this class device. * @fmt: string for the class device's name * * This function can be used by char device classes. A struct * class_device will be created in sysfs, registered to the specified - * class. A "dev" file will be created, showing the dev_t for the - * device. The pointer to the struct class_device will be returned from - * the call. Any further sysfs files that might be required can be - * created using this pointer. + * class. + * A "dev" file will be created, showing the dev_t for the device, if + * the dev_t is not 0,0. + * If a pointer to a parent struct class_device is passed in, the newly + * created struct class_device will be a child of that device in sysfs. + * The pointer to the struct class_device will be returned from the + * call. Any further sysfs files that might be required can be created + * using this pointer. * * Note: the struct class passed to this function must have previously * been created with a call to class_create(). */ -struct class_device *class_device_create(struct class *cls, dev_t devt, +struct class_device *class_device_create(struct class *cls, + struct class_device *parent, + dev_t devt, struct device *device, char *fmt, ...) { va_list args; @@ -585,6 +629,9 @@ struct class_device *class_device_create(struct class *cls, dev_t devt, class_dev->devt = devt; class_dev->dev = device; class_dev->class = cls; + class_dev->parent = parent; + class_dev->release = class_device_create_release; + class_dev->hotplug = class_device_create_hotplug; va_start(args, fmt); vsnprintf(class_dev->class_id, BUS_ID_SIZE, fmt, args); @@ -602,17 +649,18 @@ error: void class_device_del(struct class_device *class_dev) { - struct class * parent = class_dev->class; - struct class_interface * class_intf; + struct class *parent_class = class_dev->class; + struct class_device *parent_device = class_dev->parent; + struct class_interface *class_intf; char *class_name = NULL; - if (parent) { - down(&parent->sem); + if (parent_class) { + down(&parent_class->sem); list_del_init(&class_dev->node); - list_for_each_entry(class_intf, &parent->interfaces, node) + list_for_each_entry(class_intf, &parent_class->interfaces, node) if (class_intf->remove) - class_intf->remove(class_dev); - up(&parent->sem); + class_intf->remove(class_dev, class_intf); + up(&parent_class->sem); } if (class_dev->dev) { @@ -620,6 +668,7 @@ void class_device_del(struct class_device *class_dev) sysfs_remove_link(&class_dev->kobj, "device"); sysfs_remove_link(&class_dev->dev->kobj, class_name); } + class_device_remove_file(class_dev, &class_dev->uevent_attr); if (class_dev->devt_attr) class_device_remove_file(class_dev, class_dev->devt_attr); class_device_remove_attrs(class_dev); @@ -627,8 +676,8 @@ void class_device_del(struct class_device *class_dev) kobject_hotplug(&class_dev->kobj, KOBJ_REMOVE); kobject_del(&class_dev->kobj); - if (parent) - class_put(parent); + class_device_put(parent_device); + class_put(parent_class); kfree(class_name); } @@ -708,7 +757,8 @@ struct class_device * class_device_get(struct class_device *class_dev) void class_device_put(struct class_device *class_dev) { - kobject_put(&class_dev->kobj); + if (class_dev) + kobject_put(&class_dev->kobj); } @@ -728,7 +778,7 @@ int class_interface_register(struct class_interface *class_intf) list_add_tail(&class_intf->node, &parent->interfaces); if (class_intf->add) { list_for_each_entry(class_dev, &parent->children, node) - class_intf->add(class_dev); + class_intf->add(class_dev, class_intf); } up(&parent->sem); @@ -747,7 +797,7 @@ void class_interface_unregister(struct class_interface *class_intf) list_del_init(&class_intf->node); if (class_intf->remove) { list_for_each_entry(class_dev, &parent->children, node) - class_intf->remove(class_dev); + class_intf->remove(class_dev, class_intf); } up(&parent->sem); diff --git a/drivers/base/core.c b/drivers/base/core.c index 6ab73f5c799a..8615b42b517a 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -154,6 +154,13 @@ static struct kset_hotplug_ops device_hotplug_ops = { .hotplug = dev_hotplug, }; +static ssize_t store_uevent(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + kobject_hotplug(&dev->kobj, KOBJ_ADD); + return count; +} + /** * device_subsys - structure to be registered with kobject core. */ @@ -225,6 +232,7 @@ void device_initialize(struct device *dev) klist_children_put); INIT_LIST_HEAD(&dev->dma_pools); init_MUTEX(&dev->sem); + device_init_wakeup(dev, 0); } /** @@ -258,6 +266,14 @@ int device_add(struct device *dev) if ((error = kobject_add(&dev->kobj))) goto Error; + + dev->uevent_attr.attr.name = "uevent"; + dev->uevent_attr.attr.mode = S_IWUSR; + if (dev->driver) + dev->uevent_attr.attr.owner = dev->driver->owner; + dev->uevent_attr.store = store_uevent; + device_create_file(dev, &dev->uevent_attr); + kobject_hotplug(&dev->kobj, KOBJ_ADD); if ((error = device_pm_add(dev))) goto PMError; @@ -349,6 +365,7 @@ void device_del(struct device * dev) if (parent) klist_del(&dev->knode_parent); + device_remove_file(dev, &dev->uevent_attr); /* Notify the platform of the removal, in case they * need to do anything... @@ -390,11 +407,11 @@ static struct device * next_device(struct klist_iter * i) /** * device_for_each_child - device child iterator. - * @dev: parent struct device. + * @parent: parent struct device. * @data: data for the callback. * @fn: function to be called for each device. * - * Iterate over @dev's child devices, and call @fn for each, + * Iterate over @parent's child devices, and call @fn for each, * passing it @data. * * We check the return of @fn each time. If it returns anything diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index b79badd0f158..081c927b1ed8 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -9,6 +9,7 @@ #include <linux/topology.h> #include <linux/device.h> +#include "base.h" struct sysdev_class cpu_sysdev_class = { set_kset_name("cpu"), diff --git a/drivers/base/driver.c b/drivers/base/driver.c index ef3fe513e398..161f3a390d90 100644 --- a/drivers/base/driver.c +++ b/drivers/base/driver.c @@ -28,6 +28,7 @@ static struct device * next_device(struct klist_iter * i) /** * driver_for_each_device - Iterator for devices bound to a driver. * @drv: Driver we're iterating. + * @start: Device to begin with * @data: Data to pass to the callback. * @fn: Function to call for each device. * @@ -57,7 +58,7 @@ EXPORT_SYMBOL_GPL(driver_for_each_device); /** * driver_find_device - device iterator for locating a particular device. - * @driver: The device's driver + * @drv: The device's driver * @start: Device to begin with * @data: Data to pass to match function * @match: Callback function to check device diff --git a/drivers/base/firmware.c b/drivers/base/firmware.c index 88ab044932f2..cb1b98ae0d58 100644 --- a/drivers/base/firmware.c +++ b/drivers/base/firmware.c @@ -11,6 +11,9 @@ #include <linux/kobject.h> #include <linux/module.h> #include <linux/init.h> +#include <linux/device.h> + +#include "base.h" static decl_subsys(firmware, NULL, NULL); diff --git a/drivers/base/init.c b/drivers/base/init.c index a76ae5a221f3..84e604e25c4f 100644 --- a/drivers/base/init.c +++ b/drivers/base/init.c @@ -10,14 +10,8 @@ #include <linux/device.h> #include <linux/init.h> -extern int devices_init(void); -extern int buses_init(void); -extern int classes_init(void); -extern int firmware_init(void); -extern int platform_bus_init(void); -extern int system_bus_init(void); -extern int cpu_dev_init(void); -extern int attribute_container_init(void); +#include "base.h" + /** * driver_init - initialize driver model. * diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 361e204209eb..75ce8711bca5 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -17,6 +17,8 @@ #include <linux/bootmem.h> #include <linux/err.h> +#include "base.h" + struct device platform_bus = { .bus_id = "platform", }; @@ -279,13 +281,9 @@ static int platform_suspend(struct device * dev, pm_message_t state) { int ret = 0; - if (dev->driver && dev->driver->suspend) { - ret = dev->driver->suspend(dev, state, SUSPEND_DISABLE); - if (ret == 0) - ret = dev->driver->suspend(dev, state, SUSPEND_SAVE_STATE); - if (ret == 0) - ret = dev->driver->suspend(dev, state, SUSPEND_POWER_DOWN); - } + if (dev->driver && dev->driver->suspend) + ret = dev->driver->suspend(dev, state); + return ret; } @@ -293,13 +291,9 @@ static int platform_resume(struct device * dev) { int ret = 0; - if (dev->driver && dev->driver->resume) { - ret = dev->driver->resume(dev, RESUME_POWER_ON); - if (ret == 0) - ret = dev->driver->resume(dev, RESUME_RESTORE_STATE); - if (ret == 0) - ret = dev->driver->resume(dev, RESUME_ENABLE); - } + if (dev->driver && dev->driver->resume) + ret = dev->driver->resume(dev); + return ret; } diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 15e6a8f951f1..0d2e101e4f15 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -30,23 +30,6 @@ LIST_HEAD(dpm_off_irq); DECLARE_MUTEX(dpm_sem); DECLARE_MUTEX(dpm_list_sem); -/* - * PM Reference Counting. - */ - -static inline void device_pm_hold(struct device * dev) -{ - if (dev) - atomic_inc(&dev->power.pm_users); -} - -static inline void device_pm_release(struct device * dev) -{ - if (dev) - atomic_dec(&dev->power.pm_users); -} - - /** * device_pm_set_parent - Specify power dependency. * @dev: Device who needs power. @@ -62,10 +45,8 @@ static inline void device_pm_release(struct device * dev) void device_pm_set_parent(struct device * dev, struct device * parent) { - struct device * old_parent = dev->power.pm_parent; - device_pm_release(old_parent); - dev->power.pm_parent = parent; - device_pm_hold(parent); + put_device(dev->power.pm_parent); + dev->power.pm_parent = get_device(parent); } EXPORT_SYMBOL_GPL(device_pm_set_parent); @@ -75,7 +56,6 @@ int device_pm_add(struct device * dev) pr_debug("PM: Adding info for %s:%s\n", dev->bus ? dev->bus->name : "No Bus", dev->kobj.name); - atomic_set(&dev->power.pm_users, 0); down(&dpm_list_sem); list_add_tail(&dev->power.entry, &dpm_active); device_pm_set_parent(dev, dev->parent); @@ -91,7 +71,7 @@ void device_pm_remove(struct device * dev) dev->bus ? dev->bus->name : "No Bus", dev->kobj.name); down(&dpm_list_sem); dpm_sysfs_remove(dev); - device_pm_release(dev->power.pm_parent); + put_device(dev->power.pm_parent); list_del_init(&dev->power.entry); up(&dpm_list_sem); } diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h index 2e700d795cf1..fb3d35a9e101 100644 --- a/drivers/base/power/power.h +++ b/drivers/base/power/power.h @@ -67,9 +67,6 @@ extern int suspend_device(struct device *, pm_message_t); * runtime.c */ -extern int dpm_runtime_suspend(struct device *, pm_message_t); -extern void dpm_runtime_resume(struct device *); - #else /* CONFIG_PM */ @@ -82,14 +79,4 @@ static inline void device_pm_remove(struct device * dev) } -static inline int dpm_runtime_suspend(struct device * dev, pm_message_t state) -{ - return 0; -} - -static inline void dpm_runtime_resume(struct device * dev) -{ - -} - #endif diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index e8f0519f5dfa..adbc3148c039 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -36,6 +36,7 @@ void dpm_runtime_resume(struct device * dev) runtime_resume(dev); up(&dpm_sem); } +EXPORT_SYMBOL(dpm_runtime_resume); /** diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c index 8d04fb435c17..89c57875f3e5 100644 --- a/drivers/base/power/sysfs.c +++ b/drivers/base/power/sysfs.c @@ -48,8 +48,81 @@ static ssize_t state_store(struct device * dev, struct device_attribute *attr, c static DEVICE_ATTR(state, 0644, state_show, state_store); +/* + * wakeup - Report/change current wakeup option for device + * + * Some devices support "wakeup" events, which are hardware signals + * used to activate devices from suspended or low power states. Such + * devices have one of three values for the sysfs power/wakeup file: + * + * + "enabled\n" to issue the events; + * + "disabled\n" not to do so; or + * + "\n" for temporary or permanent inability to issue wakeup. + * + * (For example, unconfigured USB devices can't issue wakeups.) + * + * Familiar examples of devices that can issue wakeup events include + * keyboards and mice (both PS2 and USB styles), power buttons, modems, + * "Wake-On-LAN" Ethernet links, GPIO lines, and more. Some events + * will wake the entire system from a suspend state; others may just + * wake up the device (if the system as a whole is already active). + * Some wakeup events use normal IRQ lines; other use special out + * of band signaling. + * + * It is the responsibility of device drivers to enable (or disable) + * wakeup signaling as part of changing device power states, respecting + * the policy choices provided through the driver model. + * + * Devices may not be able to generate wakeup events from all power + * states. Also, the events may be ignored in some configurations; + * for example, they might need help from other devices that aren't + * active, or which may have wakeup disabled. Some drivers rely on + * wakeup events internally (unless they are disabled), keeping + * their hardware in low power modes whenever they're unused. This + * saves runtime power, without requiring system-wide sleep states. + */ + +static const char enabled[] = "enabled"; +static const char disabled[] = "disabled"; + +static ssize_t +wake_show(struct device * dev, struct device_attribute *attr, char * buf) +{ + return sprintf(buf, "%s\n", device_can_wakeup(dev) + ? (device_may_wakeup(dev) ? enabled : disabled) + : ""); +} + +static ssize_t +wake_store(struct device * dev, struct device_attribute *attr, + const char * buf, size_t n) +{ + char *cp; + int len = n; + + if (!device_can_wakeup(dev)) + return -EINVAL; + + cp = memchr(buf, '\n', n); + if (cp) + len = cp - buf; + if (len == sizeof enabled - 1 + && strncmp(buf, enabled, sizeof enabled - 1) == 0) + device_set_wakeup_enable(dev, 1); + else if (len == sizeof disabled - 1 + && strncmp(buf, disabled, sizeof disabled - 1) == 0) + device_set_wakeup_enable(dev, 0); + else + return -EINVAL; + return n; +} + +static DEVICE_ATTR(wakeup, 0644, wake_show, wake_store); + + static struct attribute * power_attrs[] = { &dev_attr_state.attr, + &dev_attr_wakeup.attr, NULL, }; static struct attribute_group pm_attr_group = { diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h index 0e9e586e9ba3..881c48d941b7 100644 --- a/drivers/block/aoe/aoe.h +++ b/drivers/block/aoe/aoe.h @@ -1,5 +1,5 @@ /* Copyright (c) 2004 Coraid, Inc. See COPYING for GPL terms. */ -#define VERSION "12" +#define VERSION "14" #define AOE_MAJOR 152 #define DEVICE_NAME "aoe" diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c index 45a243096187..41ae0ede619a 100644 --- a/drivers/block/aoe/aoechr.c +++ b/drivers/block/aoe/aoechr.c @@ -224,7 +224,7 @@ aoechr_init(void) return PTR_ERR(aoe_class); } for (i = 0; i < ARRAY_SIZE(chardevs); ++i) - class_device_create(aoe_class, + class_device_create(aoe_class, NULL, MKDEV(AOE_MAJOR, chardevs[i].minor), NULL, chardevs[i].name); diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index b5be4b7d7b5b..5c9c7c1a3d4c 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -8,6 +8,7 @@ #include <linux/blkdev.h> #include <linux/skbuff.h> #include <linux/netdevice.h> +#include <asm/unaligned.h> #include "aoe.h" #define TIMERTICK (HZ / 10) @@ -311,16 +312,16 @@ ataid_complete(struct aoedev *d, unsigned char *id) u16 n; /* word 83: command set supported */ - n = le16_to_cpup((__le16 *) &id[83<<1]); + n = le16_to_cpu(get_unaligned((__le16 *) &id[83<<1])); /* word 86: command set/feature enabled */ - n |= le16_to_cpup((__le16 *) &id[86<<1]); + n |= le16_to_cpu(get_unaligned((__le16 *) &id[86<<1])); if (n & (1<<10)) { /* bit 10: LBA 48 */ d->flags |= DEVFL_EXT; /* word 100: number lba48 sectors */ - ssize = le64_to_cpup((__le64 *) &id[100<<1]); + ssize = le64_to_cpu(get_unaligned((__le64 *) &id[100<<1])); /* set as in ide-disk.c:init_idedisk_capacity */ d->geo.cylinders = ssize; @@ -331,12 +332,12 @@ ataid_complete(struct aoedev *d, unsigned char *id) d->flags &= ~DEVFL_EXT; /* number lba28 sectors */ - ssize = le32_to_cpup((__le32 *) &id[60<<1]); + ssize = le32_to_cpu(get_unaligned((__le32 *) &id[60<<1])); /* NOTE: obsolete in ATA 6 */ - d->geo.cylinders = le16_to_cpup((__le16 *) &id[54<<1]); - d->geo.heads = le16_to_cpup((__le16 *) &id[55<<1]); - d->geo.sectors = le16_to_cpup((__le16 *) &id[56<<1]); + d->geo.cylinders = le16_to_cpu(get_unaligned((__le16 *) &id[54<<1])); + d->geo.heads = le16_to_cpu(get_unaligned((__le16 *) &id[55<<1])); + d->geo.sectors = le16_to_cpu(get_unaligned((__le16 *) &id[56<<1])); } d->ssize = ssize; d->geo.start = 0; diff --git a/drivers/block/as-iosched.c b/drivers/block/as-iosched.c index 95c0a3690b0f..4081c36c8c19 100644 --- a/drivers/block/as-iosched.c +++ b/drivers/block/as-iosched.c @@ -98,7 +98,6 @@ struct as_data { struct as_rq *next_arq[2]; /* next in sort order */ sector_t last_sector[2]; /* last REQ_SYNC & REQ_ASYNC sectors */ - struct list_head *dispatch; /* driver dispatch queue */ struct list_head *hash; /* request hash */ unsigned long exit_prob; /* probability a task will exit while @@ -239,6 +238,25 @@ static struct io_context *as_get_io_context(void) return ioc; } +static void as_put_io_context(struct as_rq *arq) +{ + struct as_io_context *aic; + + if (unlikely(!arq->io_context)) + return; + + aic = arq->io_context->aic; + + if (arq->is_sync == REQ_SYNC && aic) { + spin_lock(&aic->lock); + set_bit(AS_TASK_IORUNNING, &aic->state); + aic->last_end_request = jiffies; + spin_unlock(&aic->lock); + } + + put_io_context(arq->io_context); +} + /* * the back merge hash support functions */ @@ -261,14 +279,6 @@ static inline void as_del_arq_hash(struct as_rq *arq) __as_del_arq_hash(arq); } -static void as_remove_merge_hints(request_queue_t *q, struct as_rq *arq) -{ - as_del_arq_hash(arq); - - if (q->last_merge == arq->request) - q->last_merge = NULL; -} - static void as_add_arq_hash(struct as_data *ad, struct as_rq *arq) { struct request *rq = arq->request; @@ -312,7 +322,7 @@ static struct request *as_find_arq_hash(struct as_data *ad, sector_t offset) BUG_ON(!arq->on_hash); if (!rq_mergeable(__rq)) { - as_remove_merge_hints(ad->q, arq); + as_del_arq_hash(arq); continue; } @@ -950,23 +960,12 @@ static void as_completed_request(request_queue_t *q, struct request *rq) WARN_ON(!list_empty(&rq->queuelist)); - if (arq->state == AS_RQ_PRESCHED) { - WARN_ON(arq->io_context); - goto out; - } - - if (arq->state == AS_RQ_MERGED) - goto out_ioc; - if (arq->state != AS_RQ_REMOVED) { printk("arq->state %d\n", arq->state); WARN_ON(1); goto out; } - if (!blk_fs_request(rq)) - goto out; - if (ad->changed_batch && ad->nr_dispatched == 1) { kblockd_schedule_work(&ad->antic_work); ad->changed_batch = 0; @@ -1001,21 +1000,7 @@ static void as_completed_request(request_queue_t *q, struct request *rq) } } -out_ioc: - if (!arq->io_context) - goto out; - - if (arq->is_sync == REQ_SYNC) { - struct as_io_context *aic = arq->io_context->aic; - if (aic) { - spin_lock(&aic->lock); - set_bit(AS_TASK_IORUNNING, &aic->state); - aic->last_end_request = jiffies; - spin_unlock(&aic->lock); - } - } - - put_io_context(arq->io_context); + as_put_io_context(arq); out: arq->state = AS_RQ_POSTSCHED; } @@ -1047,73 +1032,11 @@ static void as_remove_queued_request(request_queue_t *q, struct request *rq) ad->next_arq[data_dir] = as_find_next_arq(ad, arq); list_del_init(&arq->fifo); - as_remove_merge_hints(q, arq); + as_del_arq_hash(arq); as_del_arq_rb(ad, arq); } /* - * as_remove_dispatched_request is called to remove a request which has gone - * to the dispatch list. - */ -static void as_remove_dispatched_request(request_queue_t *q, struct request *rq) -{ - struct as_rq *arq = RQ_DATA(rq); - struct as_io_context *aic; - - if (!arq) { - WARN_ON(1); - return; - } - - WARN_ON(arq->state != AS_RQ_DISPATCHED); - WARN_ON(ON_RB(&arq->rb_node)); - if (arq->io_context && arq->io_context->aic) { - aic = arq->io_context->aic; - if (aic) { - WARN_ON(!atomic_read(&aic->nr_dispatched)); - atomic_dec(&aic->nr_dispatched); - } - } -} - -/* - * as_remove_request is called when a driver has finished with a request. - * This should be only called for dispatched requests, but for some reason - * a POWER4 box running hwscan it does not. - */ -static void as_remove_request(request_queue_t *q, struct request *rq) -{ - struct as_rq *arq = RQ_DATA(rq); - - if (unlikely(arq->state == AS_RQ_NEW)) - goto out; - - if (ON_RB(&arq->rb_node)) { - if (arq->state != AS_RQ_QUEUED) { - printk("arq->state %d\n", arq->state); - WARN_ON(1); - goto out; - } - /* - * We'll lose the aliased request(s) here. I don't think this - * will ever happen, but if it does, hopefully someone will - * report it. - */ - WARN_ON(!list_empty(&rq->queuelist)); - as_remove_queued_request(q, rq); - } else { - if (arq->state != AS_RQ_DISPATCHED) { - printk("arq->state %d\n", arq->state); - WARN_ON(1); - goto out; - } - as_remove_dispatched_request(q, rq); - } -out: - arq->state = AS_RQ_REMOVED; -} - -/* * as_fifo_expired returns 0 if there are no expired reads on the fifo, * 1 otherwise. It is ratelimited so that we only perform the check once per * `fifo_expire' interval. Otherwise a large number of expired requests @@ -1165,7 +1088,6 @@ static inline int as_batch_expired(struct as_data *ad) static void as_move_to_dispatch(struct as_data *ad, struct as_rq *arq) { struct request *rq = arq->request; - struct list_head *insert; const int data_dir = arq->is_sync; BUG_ON(!ON_RB(&arq->rb_node)); @@ -1198,13 +1120,13 @@ static void as_move_to_dispatch(struct as_data *ad, struct as_rq *arq) /* * take it off the sort and fifo list, add to dispatch queue */ - insert = ad->dispatch->prev; - while (!list_empty(&rq->queuelist)) { struct request *__rq = list_entry_rq(rq->queuelist.next); struct as_rq *__arq = RQ_DATA(__rq); - list_move_tail(&__rq->queuelist, ad->dispatch); + list_del(&__rq->queuelist); + + elv_dispatch_add_tail(ad->q, __rq); if (__arq->io_context && __arq->io_context->aic) atomic_inc(&__arq->io_context->aic->nr_dispatched); @@ -1218,7 +1140,8 @@ static void as_move_to_dispatch(struct as_data *ad, struct as_rq *arq) as_remove_queued_request(ad->q, rq); WARN_ON(arq->state != AS_RQ_QUEUED); - list_add(&rq->queuelist, insert); + elv_dispatch_sort(ad->q, rq); + arq->state = AS_RQ_DISPATCHED; if (arq->io_context && arq->io_context->aic) atomic_inc(&arq->io_context->aic->nr_dispatched); @@ -1230,12 +1153,42 @@ static void as_move_to_dispatch(struct as_data *ad, struct as_rq *arq) * read/write expire, batch expire, etc, and moves it to the dispatch * queue. Returns 1 if a request was found, 0 otherwise. */ -static int as_dispatch_request(struct as_data *ad) +static int as_dispatch_request(request_queue_t *q, int force) { + struct as_data *ad = q->elevator->elevator_data; struct as_rq *arq; const int reads = !list_empty(&ad->fifo_list[REQ_SYNC]); const int writes = !list_empty(&ad->fifo_list[REQ_ASYNC]); + if (unlikely(force)) { + /* + * Forced dispatch, accounting is useless. Reset + * accounting states and dump fifo_lists. Note that + * batch_data_dir is reset to REQ_SYNC to avoid + * screwing write batch accounting as write batch + * accounting occurs on W->R transition. + */ + int dispatched = 0; + + ad->batch_data_dir = REQ_SYNC; + ad->changed_batch = 0; + ad->new_batch = 0; + + while (ad->next_arq[REQ_SYNC]) { + as_move_to_dispatch(ad, ad->next_arq[REQ_SYNC]); + dispatched++; + } + ad->last_check_fifo[REQ_SYNC] = jiffies; + + while (ad->next_arq[REQ_ASYNC]) { + as_move_to_dispatch(ad, ad->next_arq[REQ_ASYNC]); + dispatched++; + } + ad->last_check_fifo[REQ_ASYNC] = jiffies; + + return dispatched; + } + /* Signal that the write batch was uncontended, so we can't time it */ if (ad->batch_data_dir == REQ_ASYNC && !reads) { if (ad->current_write_count == 0 || !writes) @@ -1359,20 +1312,6 @@ fifo_expired: return 1; } -static struct request *as_next_request(request_queue_t *q) -{ - struct as_data *ad = q->elevator->elevator_data; - struct request *rq = NULL; - - /* - * if there are still requests on the dispatch queue, grab the first - */ - if (!list_empty(ad->dispatch) || as_dispatch_request(ad)) - rq = list_entry_rq(ad->dispatch->next); - - return rq; -} - /* * Add arq to a list behind alias */ @@ -1404,17 +1343,25 @@ as_add_aliased_request(struct as_data *ad, struct as_rq *arq, struct as_rq *alia /* * Don't want to have to handle merges. */ - as_remove_merge_hints(ad->q, arq); + as_del_arq_hash(arq); } /* * add arq to rbtree and fifo */ -static void as_add_request(struct as_data *ad, struct as_rq *arq) +static void as_add_request(request_queue_t *q, struct request *rq) { + struct as_data *ad = q->elevator->elevator_data; + struct as_rq *arq = RQ_DATA(rq); struct as_rq *alias; int data_dir; + if (arq->state != AS_RQ_PRESCHED) { + printk("arq->state: %d\n", arq->state); + WARN_ON(1); + } + arq->state = AS_RQ_NEW; + if (rq_data_dir(arq->request) == READ || current->flags&PF_SYNCWRITE) arq->is_sync = 1; @@ -1437,12 +1384,8 @@ static void as_add_request(struct as_data *ad, struct as_rq *arq) arq->expires = jiffies + ad->fifo_expire[data_dir]; list_add_tail(&arq->fifo, &ad->fifo_list[data_dir]); - if (rq_mergeable(arq->request)) { + if (rq_mergeable(arq->request)) as_add_arq_hash(ad, arq); - - if (!ad->q->last_merge) - ad->q->last_merge = arq->request; - } as_update_arq(ad, arq); /* keep state machine up to date */ } else { @@ -1463,96 +1406,24 @@ static void as_add_request(struct as_data *ad, struct as_rq *arq) arq->state = AS_RQ_QUEUED; } -static void as_deactivate_request(request_queue_t *q, struct request *rq) +static void as_activate_request(request_queue_t *q, struct request *rq) { - struct as_data *ad = q->elevator->elevator_data; struct as_rq *arq = RQ_DATA(rq); - if (arq) { - if (arq->state == AS_RQ_REMOVED) { - arq->state = AS_RQ_DISPATCHED; - if (arq->io_context && arq->io_context->aic) - atomic_inc(&arq->io_context->aic->nr_dispatched); - } - } else - WARN_ON(blk_fs_request(rq) - && (!(rq->flags & (REQ_HARDBARRIER|REQ_SOFTBARRIER))) ); - - /* Stop anticipating - let this request get through */ - as_antic_stop(ad); -} - -/* - * requeue the request. The request has not been completed, nor is it a - * new request, so don't touch accounting. - */ -static void as_requeue_request(request_queue_t *q, struct request *rq) -{ - as_deactivate_request(q, rq); - list_add(&rq->queuelist, &q->queue_head); -} - -/* - * Account a request that is inserted directly onto the dispatch queue. - * arq->io_context->aic->nr_dispatched should not need to be incremented - * because only new requests should come through here: requeues go through - * our explicit requeue handler. - */ -static void as_account_queued_request(struct as_data *ad, struct request *rq) -{ - if (blk_fs_request(rq)) { - struct as_rq *arq = RQ_DATA(rq); - arq->state = AS_RQ_DISPATCHED; - ad->nr_dispatched++; - } + WARN_ON(arq->state != AS_RQ_DISPATCHED); + arq->state = AS_RQ_REMOVED; + if (arq->io_context && arq->io_context->aic) + atomic_dec(&arq->io_context->aic->nr_dispatched); } -static void -as_insert_request(request_queue_t *q, struct request *rq, int where) +static void as_deactivate_request(request_queue_t *q, struct request *rq) { - struct as_data *ad = q->elevator->elevator_data; struct as_rq *arq = RQ_DATA(rq); - if (arq) { - if (arq->state != AS_RQ_PRESCHED) { - printk("arq->state: %d\n", arq->state); - WARN_ON(1); - } - arq->state = AS_RQ_NEW; - } - - /* barriers must flush the reorder queue */ - if (unlikely(rq->flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER) - && where == ELEVATOR_INSERT_SORT)) { - WARN_ON(1); - where = ELEVATOR_INSERT_BACK; - } - - switch (where) { - case ELEVATOR_INSERT_BACK: - while (ad->next_arq[REQ_SYNC]) - as_move_to_dispatch(ad, ad->next_arq[REQ_SYNC]); - - while (ad->next_arq[REQ_ASYNC]) - as_move_to_dispatch(ad, ad->next_arq[REQ_ASYNC]); - - list_add_tail(&rq->queuelist, ad->dispatch); - as_account_queued_request(ad, rq); - as_antic_stop(ad); - break; - case ELEVATOR_INSERT_FRONT: - list_add(&rq->queuelist, ad->dispatch); - as_account_queued_request(ad, rq); - as_antic_stop(ad); - break; - case ELEVATOR_INSERT_SORT: - BUG_ON(!blk_fs_request(rq)); - as_add_request(ad, arq); - break; - default: - BUG(); - return; - } + WARN_ON(arq->state != AS_RQ_REMOVED); + arq->state = AS_RQ_DISPATCHED; + if (arq->io_context && arq->io_context->aic) + atomic_inc(&arq->io_context->aic->nr_dispatched); } /* @@ -1565,12 +1436,8 @@ static int as_queue_empty(request_queue_t *q) { struct as_data *ad = q->elevator->elevator_data; - if (!list_empty(&ad->fifo_list[REQ_ASYNC]) - || !list_empty(&ad->fifo_list[REQ_SYNC]) - || !list_empty(ad->dispatch)) - return 0; - - return 1; + return list_empty(&ad->fifo_list[REQ_ASYNC]) + && list_empty(&ad->fifo_list[REQ_SYNC]); } static struct request * @@ -1608,15 +1475,6 @@ as_merge(request_queue_t *q, struct request **req, struct bio *bio) int ret; /* - * try last_merge to avoid going to hash - */ - ret = elv_try_last_merge(q, bio); - if (ret != ELEVATOR_NO_MERGE) { - __rq = q->last_merge; - goto out_insert; - } - - /* * see if the merge hash can satisfy a back merge */ __rq = as_find_arq_hash(ad, bio->bi_sector); @@ -1644,9 +1502,6 @@ as_merge(request_queue_t *q, struct request **req, struct bio *bio) return ELEVATOR_NO_MERGE; out: - if (rq_mergeable(__rq)) - q->last_merge = __rq; -out_insert: if (ret) { if (rq_mergeable(__rq)) as_hot_arq_hash(ad, RQ_DATA(__rq)); @@ -1693,9 +1548,6 @@ static void as_merged_request(request_queue_t *q, struct request *req) * behind the disk head. We currently don't bother adjusting. */ } - - if (arq->on_hash) - q->last_merge = req; } static void @@ -1763,6 +1615,7 @@ as_merged_requests(request_queue_t *q, struct request *req, * kill knowledge of next, this one is a goner */ as_remove_queued_request(q, next); + as_put_io_context(anext); anext->state = AS_RQ_MERGED; } @@ -1782,7 +1635,7 @@ static void as_work_handler(void *data) unsigned long flags; spin_lock_irqsave(q->queue_lock, flags); - if (as_next_request(q)) + if (!as_queue_empty(q)) q->request_fn(q); spin_unlock_irqrestore(q->queue_lock, flags); } @@ -1797,7 +1650,9 @@ static void as_put_request(request_queue_t *q, struct request *rq) return; } - if (arq->state != AS_RQ_POSTSCHED && arq->state != AS_RQ_PRESCHED) { + if (unlikely(arq->state != AS_RQ_POSTSCHED && + arq->state != AS_RQ_PRESCHED && + arq->state != AS_RQ_MERGED)) { printk("arq->state %d\n", arq->state); WARN_ON(1); } @@ -1807,7 +1662,7 @@ static void as_put_request(request_queue_t *q, struct request *rq) } static int as_set_request(request_queue_t *q, struct request *rq, - struct bio *bio, int gfp_mask) + struct bio *bio, gfp_t gfp_mask) { struct as_data *ad = q->elevator->elevator_data; struct as_rq *arq = mempool_alloc(ad->arq_pool, gfp_mask); @@ -1907,7 +1762,6 @@ static int as_init_queue(request_queue_t *q, elevator_t *e) INIT_LIST_HEAD(&ad->fifo_list[REQ_ASYNC]); ad->sort_list[REQ_SYNC] = RB_ROOT; ad->sort_list[REQ_ASYNC] = RB_ROOT; - ad->dispatch = &q->queue_head; ad->fifo_expire[REQ_SYNC] = default_read_expire; ad->fifo_expire[REQ_ASYNC] = default_write_expire; ad->antic_expire = default_antic_expire; @@ -2072,10 +1926,9 @@ static struct elevator_type iosched_as = { .elevator_merge_fn = as_merge, .elevator_merged_fn = as_merged_request, .elevator_merge_req_fn = as_merged_requests, - .elevator_next_req_fn = as_next_request, - .elevator_add_req_fn = as_insert_request, - .elevator_remove_req_fn = as_remove_request, - .elevator_requeue_req_fn = as_requeue_request, + .elevator_dispatch_fn = as_dispatch_request, + .elevator_add_req_fn = as_add_request, + .elevator_activate_req_fn = as_activate_request, .elevator_deactivate_req_fn = as_deactivate_request, .elevator_queue_empty_fn = as_queue_empty, .elevator_completed_req_fn = as_completed_request, diff --git a/drivers/block/cfq-iosched.c b/drivers/block/cfq-iosched.c index cd056e7e64ec..94690e4d41e0 100644 --- a/drivers/block/cfq-iosched.c +++ b/drivers/block/cfq-iosched.c @@ -84,7 +84,6 @@ static int cfq_max_depth = 2; (node)->rb_left = NULL; \ } while (0) #define RB_CLEAR_ROOT(root) ((root)->rb_node = NULL) -#define ON_RB(node) ((node)->rb_color != RB_NONE) #define rb_entry_crq(node) rb_entry((node), struct cfq_rq, rb_node) #define rq_rb_key(rq) (rq)->sector @@ -271,10 +270,7 @@ CFQ_CFQQ_FNS(expired); #undef CFQ_CFQQ_FNS enum cfq_rq_state_flags { - CFQ_CRQ_FLAG_in_flight = 0, - CFQ_CRQ_FLAG_in_driver, - CFQ_CRQ_FLAG_is_sync, - CFQ_CRQ_FLAG_requeued, + CFQ_CRQ_FLAG_is_sync = 0, }; #define CFQ_CRQ_FNS(name) \ @@ -291,14 +287,11 @@ static inline int cfq_crq_##name(const struct cfq_rq *crq) \ return (crq->crq_flags & (1 << CFQ_CRQ_FLAG_##name)) != 0; \ } -CFQ_CRQ_FNS(in_flight); -CFQ_CRQ_FNS(in_driver); CFQ_CRQ_FNS(is_sync); -CFQ_CRQ_FNS(requeued); #undef CFQ_CRQ_FNS static struct cfq_queue *cfq_find_cfq_hash(struct cfq_data *, unsigned int, unsigned short); -static void cfq_dispatch_sort(request_queue_t *, struct cfq_rq *); +static void cfq_dispatch_insert(request_queue_t *, struct cfq_rq *); static void cfq_put_cfqd(struct cfq_data *cfqd); #define process_sync(tsk) ((tsk)->flags & PF_SYNCWRITE) @@ -311,14 +304,6 @@ static inline void cfq_del_crq_hash(struct cfq_rq *crq) hlist_del_init(&crq->hash); } -static void cfq_remove_merge_hints(request_queue_t *q, struct cfq_rq *crq) -{ - cfq_del_crq_hash(crq); - - if (q->last_merge == crq->request) - q->last_merge = NULL; -} - static inline void cfq_add_crq_hash(struct cfq_data *cfqd, struct cfq_rq *crq) { const int hash_idx = CFQ_MHASH_FN(rq_hash_key(crq->request)); @@ -347,18 +332,13 @@ static struct request *cfq_find_rq_hash(struct cfq_data *cfqd, sector_t offset) return NULL; } -static inline int cfq_pending_requests(struct cfq_data *cfqd) -{ - return !list_empty(&cfqd->queue->queue_head) || cfqd->busy_queues; -} - /* * scheduler run of queue, if there are requests pending and no one in the * driver that will restart queueing */ static inline void cfq_schedule_dispatch(struct cfq_data *cfqd) { - if (!cfqd->rq_in_driver && cfq_pending_requests(cfqd)) + if (!cfqd->rq_in_driver && cfqd->busy_queues) kblockd_schedule_work(&cfqd->unplug_work); } @@ -366,7 +346,7 @@ static int cfq_queue_empty(request_queue_t *q) { struct cfq_data *cfqd = q->elevator->elevator_data; - return !cfq_pending_requests(cfqd); + return !cfqd->busy_queues; } /* @@ -386,11 +366,6 @@ cfq_choose_req(struct cfq_data *cfqd, struct cfq_rq *crq1, struct cfq_rq *crq2) if (crq2 == NULL) return crq1; - if (cfq_crq_requeued(crq1) && !cfq_crq_requeued(crq2)) - return crq1; - else if (cfq_crq_requeued(crq2) && !cfq_crq_requeued(crq1)) - return crq2; - if (cfq_crq_is_sync(crq1) && !cfq_crq_is_sync(crq2)) return crq1; else if (cfq_crq_is_sync(crq2) && !cfq_crq_is_sync(crq1)) @@ -461,10 +436,7 @@ cfq_find_next_crq(struct cfq_data *cfqd, struct cfq_queue *cfqq, struct cfq_rq *crq_next = NULL, *crq_prev = NULL; struct rb_node *rbnext, *rbprev; - rbnext = NULL; - if (ON_RB(&last->rb_node)) - rbnext = rb_next(&last->rb_node); - if (!rbnext) { + if (!(rbnext = rb_next(&last->rb_node))) { rbnext = rb_first(&cfqq->sort_list); if (rbnext == &last->rb_node) rbnext = NULL; @@ -545,13 +517,13 @@ static void cfq_resort_rr_list(struct cfq_queue *cfqq, int preempted) * the pending list according to last request service */ static inline void -cfq_add_cfqq_rr(struct cfq_data *cfqd, struct cfq_queue *cfqq, int requeue) +cfq_add_cfqq_rr(struct cfq_data *cfqd, struct cfq_queue *cfqq) { BUG_ON(cfq_cfqq_on_rr(cfqq)); cfq_mark_cfqq_on_rr(cfqq); cfqd->busy_queues++; - cfq_resort_rr_list(cfqq, requeue); + cfq_resort_rr_list(cfqq, 0); } static inline void @@ -571,22 +543,19 @@ cfq_del_cfqq_rr(struct cfq_data *cfqd, struct cfq_queue *cfqq) static inline void cfq_del_crq_rb(struct cfq_rq *crq) { struct cfq_queue *cfqq = crq->cfq_queue; + struct cfq_data *cfqd = cfqq->cfqd; + const int sync = cfq_crq_is_sync(crq); - if (ON_RB(&crq->rb_node)) { - struct cfq_data *cfqd = cfqq->cfqd; - const int sync = cfq_crq_is_sync(crq); + BUG_ON(!cfqq->queued[sync]); + cfqq->queued[sync]--; - BUG_ON(!cfqq->queued[sync]); - cfqq->queued[sync]--; + cfq_update_next_crq(crq); - cfq_update_next_crq(crq); + rb_erase(&crq->rb_node, &cfqq->sort_list); + RB_CLEAR_COLOR(&crq->rb_node); - rb_erase(&crq->rb_node, &cfqq->sort_list); - RB_CLEAR_COLOR(&crq->rb_node); - - if (cfq_cfqq_on_rr(cfqq) && RB_EMPTY(&cfqq->sort_list)) - cfq_del_cfqq_rr(cfqd, cfqq); - } + if (cfq_cfqq_on_rr(cfqq) && RB_EMPTY(&cfqq->sort_list)) + cfq_del_cfqq_rr(cfqd, cfqq); } static struct cfq_rq * @@ -627,12 +596,12 @@ static void cfq_add_crq_rb(struct cfq_rq *crq) * if that happens, put the alias on the dispatch list */ while ((__alias = __cfq_add_crq_rb(crq)) != NULL) - cfq_dispatch_sort(cfqd->queue, __alias); + cfq_dispatch_insert(cfqd->queue, __alias); rb_insert_color(&crq->rb_node, &cfqq->sort_list); if (!cfq_cfqq_on_rr(cfqq)) - cfq_add_cfqq_rr(cfqd, cfqq, cfq_crq_requeued(crq)); + cfq_add_cfqq_rr(cfqd, cfqq); /* * check if this request is a better next-serve candidate @@ -643,10 +612,8 @@ static void cfq_add_crq_rb(struct cfq_rq *crq) static inline void cfq_reposition_crq_rb(struct cfq_queue *cfqq, struct cfq_rq *crq) { - if (ON_RB(&crq->rb_node)) { - rb_erase(&crq->rb_node, &cfqq->sort_list); - cfqq->queued[cfq_crq_is_sync(crq)]--; - } + rb_erase(&crq->rb_node, &cfqq->sort_list); + cfqq->queued[cfq_crq_is_sync(crq)]--; cfq_add_crq_rb(crq); } @@ -676,49 +643,28 @@ out: return NULL; } -static void cfq_deactivate_request(request_queue_t *q, struct request *rq) +static void cfq_activate_request(request_queue_t *q, struct request *rq) { struct cfq_data *cfqd = q->elevator->elevator_data; - struct cfq_rq *crq = RQ_DATA(rq); - - if (crq) { - struct cfq_queue *cfqq = crq->cfq_queue; - - if (cfq_crq_in_driver(crq)) { - cfq_clear_crq_in_driver(crq); - WARN_ON(!cfqd->rq_in_driver); - cfqd->rq_in_driver--; - } - if (cfq_crq_in_flight(crq)) { - const int sync = cfq_crq_is_sync(crq); - cfq_clear_crq_in_flight(crq); - WARN_ON(!cfqq->on_dispatch[sync]); - cfqq->on_dispatch[sync]--; - } - cfq_mark_crq_requeued(crq); - } + cfqd->rq_in_driver++; } -/* - * make sure the service time gets corrected on reissue of this request - */ -static void cfq_requeue_request(request_queue_t *q, struct request *rq) +static void cfq_deactivate_request(request_queue_t *q, struct request *rq) { - cfq_deactivate_request(q, rq); - list_add(&rq->queuelist, &q->queue_head); + struct cfq_data *cfqd = q->elevator->elevator_data; + + WARN_ON(!cfqd->rq_in_driver); + cfqd->rq_in_driver--; } -static void cfq_remove_request(request_queue_t *q, struct request *rq) +static void cfq_remove_request(struct request *rq) { struct cfq_rq *crq = RQ_DATA(rq); - if (crq) { - list_del_init(&rq->queuelist); - cfq_del_crq_rb(crq); - cfq_remove_merge_hints(q, crq); - - } + list_del_init(&rq->queuelist); + cfq_del_crq_rb(crq); + cfq_del_crq_hash(crq); } static int @@ -728,12 +674,6 @@ cfq_merge(request_queue_t *q, struct request **req, struct bio *bio) struct request *__rq; int ret; - ret = elv_try_last_merge(q, bio); - if (ret != ELEVATOR_NO_MERGE) { - __rq = q->last_merge; - goto out_insert; - } - __rq = cfq_find_rq_hash(cfqd, bio->bi_sector); if (__rq && elv_rq_merge_ok(__rq, bio)) { ret = ELEVATOR_BACK_MERGE; @@ -748,8 +688,6 @@ cfq_merge(request_queue_t *q, struct request **req, struct bio *bio) return ELEVATOR_NO_MERGE; out: - q->last_merge = __rq; -out_insert: *req = __rq; return ret; } @@ -762,14 +700,12 @@ static void cfq_merged_request(request_queue_t *q, struct request *req) cfq_del_crq_hash(crq); cfq_add_crq_hash(cfqd, crq); - if (ON_RB(&crq->rb_node) && (rq_rb_key(req) != crq->rb_key)) { + if (rq_rb_key(req) != crq->rb_key) { struct cfq_queue *cfqq = crq->cfq_queue; cfq_update_next_crq(crq); cfq_reposition_crq_rb(cfqq, crq); } - - q->last_merge = req; } static void @@ -785,7 +721,7 @@ cfq_merged_requests(request_queue_t *q, struct request *rq, time_before(next->start_time, rq->start_time)) list_move(&rq->queuelist, &next->queuelist); - cfq_remove_request(q, next); + cfq_remove_request(next); } static inline void @@ -992,53 +928,15 @@ static int cfq_arm_slice_timer(struct cfq_data *cfqd, struct cfq_queue *cfqq) return 1; } -/* - * we dispatch cfqd->cfq_quantum requests in total from the rr_list queues, - * this function sector sorts the selected request to minimize seeks. we start - * at cfqd->last_sector, not 0. - */ -static void cfq_dispatch_sort(request_queue_t *q, struct cfq_rq *crq) +static void cfq_dispatch_insert(request_queue_t *q, struct cfq_rq *crq) { struct cfq_data *cfqd = q->elevator->elevator_data; struct cfq_queue *cfqq = crq->cfq_queue; - struct list_head *head = &q->queue_head, *entry = head; - struct request *__rq; - sector_t last; - - list_del(&crq->request->queuelist); - - last = cfqd->last_sector; - list_for_each_entry_reverse(__rq, head, queuelist) { - struct cfq_rq *__crq = RQ_DATA(__rq); - - if (blk_barrier_rq(__rq)) - break; - if (!blk_fs_request(__rq)) - break; - if (cfq_crq_requeued(__crq)) - break; - - if (__rq->sector <= crq->request->sector) - break; - if (__rq->sector > last && crq->request->sector < last) { - last = crq->request->sector + crq->request->nr_sectors; - break; - } - entry = &__rq->queuelist; - } - - cfqd->last_sector = last; cfqq->next_crq = cfq_find_next_crq(cfqd, cfqq, crq); - - cfq_del_crq_rb(crq); - cfq_remove_merge_hints(q, crq); - - cfq_mark_crq_in_flight(crq); - cfq_clear_crq_requeued(crq); - + cfq_remove_request(crq->request); cfqq->on_dispatch[cfq_crq_is_sync(crq)]++; - list_add_tail(&crq->request->queuelist, entry); + elv_dispatch_sort(q, crq->request); } /* @@ -1159,7 +1057,7 @@ __cfq_dispatch_requests(struct cfq_data *cfqd, struct cfq_queue *cfqq, /* * finally, insert request into driver dispatch list */ - cfq_dispatch_sort(cfqd->queue, crq); + cfq_dispatch_insert(cfqd->queue, crq); cfqd->dispatch_slice++; dispatched++; @@ -1194,7 +1092,7 @@ __cfq_dispatch_requests(struct cfq_data *cfqd, struct cfq_queue *cfqq, } static int -cfq_dispatch_requests(request_queue_t *q, int max_dispatch, int force) +cfq_dispatch_requests(request_queue_t *q, int force) { struct cfq_data *cfqd = q->elevator->elevator_data; struct cfq_queue *cfqq; @@ -1204,12 +1102,25 @@ cfq_dispatch_requests(request_queue_t *q, int max_dispatch, int force) cfqq = cfq_select_queue(cfqd, force); if (cfqq) { + int max_dispatch; + + /* + * if idle window is disabled, allow queue buildup + */ + if (!cfq_cfqq_idle_window(cfqq) && + cfqd->rq_in_driver >= cfqd->cfq_max_depth) + return 0; + cfq_clear_cfqq_must_dispatch(cfqq); cfq_clear_cfqq_wait_request(cfqq); del_timer(&cfqd->idle_slice_timer); - if (cfq_class_idle(cfqq)) - max_dispatch = 1; + if (!force) { + max_dispatch = cfqd->cfq_quantum; + if (cfq_class_idle(cfqq)) + max_dispatch = 1; + } else + max_dispatch = INT_MAX; return __cfq_dispatch_requests(cfqd, cfqq, max_dispatch); } @@ -1217,93 +1128,6 @@ cfq_dispatch_requests(request_queue_t *q, int max_dispatch, int force) return 0; } -static inline void cfq_account_dispatch(struct cfq_rq *crq) -{ - struct cfq_queue *cfqq = crq->cfq_queue; - struct cfq_data *cfqd = cfqq->cfqd; - - if (unlikely(!blk_fs_request(crq->request))) - return; - - /* - * accounted bit is necessary since some drivers will call - * elv_next_request() many times for the same request (eg ide) - */ - if (cfq_crq_in_driver(crq)) - return; - - cfq_mark_crq_in_driver(crq); - cfqd->rq_in_driver++; -} - -static inline void -cfq_account_completion(struct cfq_queue *cfqq, struct cfq_rq *crq) -{ - struct cfq_data *cfqd = cfqq->cfqd; - unsigned long now; - - if (!cfq_crq_in_driver(crq)) - return; - - now = jiffies; - - WARN_ON(!cfqd->rq_in_driver); - cfqd->rq_in_driver--; - - if (!cfq_class_idle(cfqq)) - cfqd->last_end_request = now; - - if (!cfq_cfqq_dispatched(cfqq)) { - if (cfq_cfqq_on_rr(cfqq)) { - cfqq->service_last = now; - cfq_resort_rr_list(cfqq, 0); - } - if (cfq_cfqq_expired(cfqq)) { - __cfq_slice_expired(cfqd, cfqq, 0); - cfq_schedule_dispatch(cfqd); - } - } - - if (cfq_crq_is_sync(crq)) - crq->io_context->last_end_request = now; -} - -static struct request *cfq_next_request(request_queue_t *q) -{ - struct cfq_data *cfqd = q->elevator->elevator_data; - struct request *rq; - - if (!list_empty(&q->queue_head)) { - struct cfq_rq *crq; -dispatch: - rq = list_entry_rq(q->queue_head.next); - - crq = RQ_DATA(rq); - if (crq) { - struct cfq_queue *cfqq = crq->cfq_queue; - - /* - * if idle window is disabled, allow queue buildup - */ - if (!cfq_crq_in_driver(crq) && - !cfq_cfqq_idle_window(cfqq) && - !blk_barrier_rq(rq) && - cfqd->rq_in_driver >= cfqd->cfq_max_depth) - return NULL; - - cfq_remove_merge_hints(q, crq); - cfq_account_dispatch(crq); - } - - return rq; - } - - if (cfq_dispatch_requests(q, cfqd->cfq_quantum, 0)) - goto dispatch; - - return NULL; -} - /* * task holds one reference to the queue, dropped when task exits. each crq * in-flight on this queue also holds a reference, dropped when crq is freed. @@ -1422,7 +1246,7 @@ static void cfq_exit_io_context(struct cfq_io_context *cic) } static struct cfq_io_context * -cfq_alloc_io_context(struct cfq_data *cfqd, int gfp_mask) +cfq_alloc_io_context(struct cfq_data *cfqd, gfp_t gfp_mask) { struct cfq_io_context *cic = kmem_cache_alloc(cfq_ioc_pool, gfp_mask); @@ -1517,7 +1341,7 @@ static int cfq_ioc_set_ioprio(struct io_context *ioc, unsigned int ioprio) static struct cfq_queue * cfq_get_queue(struct cfq_data *cfqd, unsigned int key, unsigned short ioprio, - int gfp_mask) + gfp_t gfp_mask) { const int hashval = hash_long(key, CFQ_QHASH_SHIFT); struct cfq_queue *cfqq, *new_cfqq = NULL; @@ -1578,7 +1402,7 @@ out: * cfqq, so we don't need to worry about it disappearing */ static struct cfq_io_context * -cfq_get_io_context(struct cfq_data *cfqd, pid_t pid, int gfp_mask) +cfq_get_io_context(struct cfq_data *cfqd, pid_t pid, gfp_t gfp_mask) { struct io_context *ioc = NULL; struct cfq_io_context *cic; @@ -1816,8 +1640,9 @@ cfq_crq_enqueued(struct cfq_data *cfqd, struct cfq_queue *cfqq, } } -static void cfq_enqueue(struct cfq_data *cfqd, struct request *rq) +static void cfq_insert_request(request_queue_t *q, struct request *rq) { + struct cfq_data *cfqd = q->elevator->elevator_data; struct cfq_rq *crq = RQ_DATA(rq); struct cfq_queue *cfqq = crq->cfq_queue; @@ -1827,66 +1652,43 @@ static void cfq_enqueue(struct cfq_data *cfqd, struct request *rq) list_add_tail(&rq->queuelist, &cfqq->fifo); - if (rq_mergeable(rq)) { + if (rq_mergeable(rq)) cfq_add_crq_hash(cfqd, crq); - if (!cfqd->queue->last_merge) - cfqd->queue->last_merge = rq; - } - cfq_crq_enqueued(cfqd, cfqq, crq); } -static void -cfq_insert_request(request_queue_t *q, struct request *rq, int where) -{ - struct cfq_data *cfqd = q->elevator->elevator_data; - - switch (where) { - case ELEVATOR_INSERT_BACK: - while (cfq_dispatch_requests(q, INT_MAX, 1)) - ; - list_add_tail(&rq->queuelist, &q->queue_head); - /* - * If we were idling with pending requests on - * inactive cfqqs, force dispatching will - * remove the idle timer and the queue won't - * be kicked by __make_request() afterward. - * Kick it here. - */ - cfq_schedule_dispatch(cfqd); - break; - case ELEVATOR_INSERT_FRONT: - list_add(&rq->queuelist, &q->queue_head); - break; - case ELEVATOR_INSERT_SORT: - BUG_ON(!blk_fs_request(rq)); - cfq_enqueue(cfqd, rq); - break; - default: - printk("%s: bad insert point %d\n", __FUNCTION__,where); - return; - } -} - static void cfq_completed_request(request_queue_t *q, struct request *rq) { struct cfq_rq *crq = RQ_DATA(rq); - struct cfq_queue *cfqq; + struct cfq_queue *cfqq = crq->cfq_queue; + struct cfq_data *cfqd = cfqq->cfqd; + const int sync = cfq_crq_is_sync(crq); + unsigned long now; - if (unlikely(!blk_fs_request(rq))) - return; + now = jiffies; - cfqq = crq->cfq_queue; + WARN_ON(!cfqd->rq_in_driver); + WARN_ON(!cfqq->on_dispatch[sync]); + cfqd->rq_in_driver--; + cfqq->on_dispatch[sync]--; - if (cfq_crq_in_flight(crq)) { - const int sync = cfq_crq_is_sync(crq); + if (!cfq_class_idle(cfqq)) + cfqd->last_end_request = now; - WARN_ON(!cfqq->on_dispatch[sync]); - cfqq->on_dispatch[sync]--; + if (!cfq_cfqq_dispatched(cfqq)) { + if (cfq_cfqq_on_rr(cfqq)) { + cfqq->service_last = now; + cfq_resort_rr_list(cfqq, 0); + } + if (cfq_cfqq_expired(cfqq)) { + __cfq_slice_expired(cfqd, cfqq, 0); + cfq_schedule_dispatch(cfqd); + } } - cfq_account_completion(cfqq, crq); + if (cfq_crq_is_sync(crq)) + crq->io_context->last_end_request = now; } static struct request * @@ -2075,7 +1877,7 @@ static void cfq_put_request(request_queue_t *q, struct request *rq) */ static int cfq_set_request(request_queue_t *q, struct request *rq, struct bio *bio, - int gfp_mask) + gfp_t gfp_mask) { struct cfq_data *cfqd = q->elevator->elevator_data; struct task_struct *tsk = current; @@ -2118,9 +1920,6 @@ cfq_set_request(request_queue_t *q, struct request *rq, struct bio *bio, INIT_HLIST_NODE(&crq->hash); crq->cfq_queue = cfqq; crq->io_context = cic; - cfq_clear_crq_in_flight(crq); - cfq_clear_crq_in_driver(crq); - cfq_clear_crq_requeued(crq); if (rw == READ || process_sync(tsk)) cfq_mark_crq_is_sync(crq); @@ -2201,7 +2000,7 @@ static void cfq_idle_slice_timer(unsigned long data) * only expire and reinvoke request handler, if there are * other queues with pending requests */ - if (!cfq_pending_requests(cfqd)) { + if (!cfqd->busy_queues) { cfqd->idle_slice_timer.expires = min(now + cfqd->cfq_slice_idle, cfqq->slice_end); add_timer(&cfqd->idle_slice_timer); goto out_cont; @@ -2576,10 +2375,9 @@ static struct elevator_type iosched_cfq = { .elevator_merge_fn = cfq_merge, .elevator_merged_fn = cfq_merged_request, .elevator_merge_req_fn = cfq_merged_requests, - .elevator_next_req_fn = cfq_next_request, + .elevator_dispatch_fn = cfq_dispatch_requests, .elevator_add_req_fn = cfq_insert_request, - .elevator_remove_req_fn = cfq_remove_request, - .elevator_requeue_req_fn = cfq_requeue_request, + .elevator_activate_req_fn = cfq_activate_request, .elevator_deactivate_req_fn = cfq_deactivate_request, .elevator_queue_empty_fn = cfq_queue_empty, .elevator_completed_req_fn = cfq_completed_request, diff --git a/drivers/block/deadline-iosched.c b/drivers/block/deadline-iosched.c index 52a3ae5289a0..7929471d7df7 100644 --- a/drivers/block/deadline-iosched.c +++ b/drivers/block/deadline-iosched.c @@ -50,7 +50,6 @@ struct deadline_data { * next in sort order. read, write or both are NULL */ struct deadline_rq *next_drq[2]; - struct list_head *dispatch; /* driver dispatch queue */ struct list_head *hash; /* request hash */ unsigned int batching; /* number of sequential requests made */ sector_t last_sector; /* head position */ @@ -113,15 +112,6 @@ static inline void deadline_del_drq_hash(struct deadline_rq *drq) __deadline_del_drq_hash(drq); } -static void -deadline_remove_merge_hints(request_queue_t *q, struct deadline_rq *drq) -{ - deadline_del_drq_hash(drq); - - if (q->last_merge == drq->request) - q->last_merge = NULL; -} - static inline void deadline_add_drq_hash(struct deadline_data *dd, struct deadline_rq *drq) { @@ -239,10 +229,9 @@ deadline_del_drq_rb(struct deadline_data *dd, struct deadline_rq *drq) dd->next_drq[data_dir] = rb_entry_drq(rbnext); } - if (ON_RB(&drq->rb_node)) { - rb_erase(&drq->rb_node, DRQ_RB_ROOT(dd, drq)); - RB_CLEAR(&drq->rb_node); - } + BUG_ON(!ON_RB(&drq->rb_node)); + rb_erase(&drq->rb_node, DRQ_RB_ROOT(dd, drq)); + RB_CLEAR(&drq->rb_node); } static struct request * @@ -286,7 +275,7 @@ deadline_find_first_drq(struct deadline_data *dd, int data_dir) /* * add drq to rbtree and fifo */ -static inline void +static void deadline_add_request(struct request_queue *q, struct request *rq) { struct deadline_data *dd = q->elevator->elevator_data; @@ -301,12 +290,8 @@ deadline_add_request(struct request_queue *q, struct request *rq) drq->expires = jiffies + dd->fifo_expire[data_dir]; list_add_tail(&drq->fifo, &dd->fifo_list[data_dir]); - if (rq_mergeable(rq)) { + if (rq_mergeable(rq)) deadline_add_drq_hash(dd, drq); - - if (!q->last_merge) - q->last_merge = rq; - } } /* @@ -315,14 +300,11 @@ deadline_add_request(struct request_queue *q, struct request *rq) static void deadline_remove_request(request_queue_t *q, struct request *rq) { struct deadline_rq *drq = RQ_DATA(rq); + struct deadline_data *dd = q->elevator->elevator_data; - if (drq) { - struct deadline_data *dd = q->elevator->elevator_data; - - list_del_init(&drq->fifo); - deadline_remove_merge_hints(q, drq); - deadline_del_drq_rb(dd, drq); - } + list_del_init(&drq->fifo); + deadline_del_drq_rb(dd, drq); + deadline_del_drq_hash(drq); } static int @@ -333,15 +315,6 @@ deadline_merge(request_queue_t *q, struct request **req, struct bio *bio) int ret; /* - * try last_merge to avoid going to hash - */ - ret = elv_try_last_merge(q, bio); - if (ret != ELEVATOR_NO_MERGE) { - __rq = q->last_merge; - goto out_insert; - } - - /* * see if the merge hash can satisfy a back merge */ __rq = deadline_find_drq_hash(dd, bio->bi_sector); @@ -373,8 +346,6 @@ deadline_merge(request_queue_t *q, struct request **req, struct bio *bio) return ELEVATOR_NO_MERGE; out: - q->last_merge = __rq; -out_insert: if (ret) deadline_hot_drq_hash(dd, RQ_DATA(__rq)); *req = __rq; @@ -399,8 +370,6 @@ static void deadline_merged_request(request_queue_t *q, struct request *req) deadline_del_drq_rb(dd, drq); deadline_add_drq_rb(dd, drq); } - - q->last_merge = req; } static void @@ -452,7 +421,7 @@ deadline_move_to_dispatch(struct deadline_data *dd, struct deadline_rq *drq) request_queue_t *q = drq->request->q; deadline_remove_request(q, drq->request); - list_add_tail(&drq->request->queuelist, dd->dispatch); + elv_dispatch_add_tail(q, drq->request); } /* @@ -502,8 +471,9 @@ static inline int deadline_check_fifo(struct deadline_data *dd, int ddir) * deadline_dispatch_requests selects the best request according to * read/write expire, fifo_batch, etc */ -static int deadline_dispatch_requests(struct deadline_data *dd) +static int deadline_dispatch_requests(request_queue_t *q, int force) { + struct deadline_data *dd = q->elevator->elevator_data; const int reads = !list_empty(&dd->fifo_list[READ]); const int writes = !list_empty(&dd->fifo_list[WRITE]); struct deadline_rq *drq; @@ -597,65 +567,12 @@ dispatch_request: return 1; } -static struct request *deadline_next_request(request_queue_t *q) -{ - struct deadline_data *dd = q->elevator->elevator_data; - struct request *rq; - - /* - * if there are still requests on the dispatch queue, grab the first one - */ - if (!list_empty(dd->dispatch)) { -dispatch: - rq = list_entry_rq(dd->dispatch->next); - return rq; - } - - if (deadline_dispatch_requests(dd)) - goto dispatch; - - return NULL; -} - -static void -deadline_insert_request(request_queue_t *q, struct request *rq, int where) -{ - struct deadline_data *dd = q->elevator->elevator_data; - - /* barriers must flush the reorder queue */ - if (unlikely(rq->flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER) - && where == ELEVATOR_INSERT_SORT)) - where = ELEVATOR_INSERT_BACK; - - switch (where) { - case ELEVATOR_INSERT_BACK: - while (deadline_dispatch_requests(dd)) - ; - list_add_tail(&rq->queuelist, dd->dispatch); - break; - case ELEVATOR_INSERT_FRONT: - list_add(&rq->queuelist, dd->dispatch); - break; - case ELEVATOR_INSERT_SORT: - BUG_ON(!blk_fs_request(rq)); - deadline_add_request(q, rq); - break; - default: - printk("%s: bad insert point %d\n", __FUNCTION__,where); - return; - } -} - static int deadline_queue_empty(request_queue_t *q) { struct deadline_data *dd = q->elevator->elevator_data; - if (!list_empty(&dd->fifo_list[WRITE]) - || !list_empty(&dd->fifo_list[READ]) - || !list_empty(dd->dispatch)) - return 0; - - return 1; + return list_empty(&dd->fifo_list[WRITE]) + && list_empty(&dd->fifo_list[READ]); } static struct request * @@ -733,7 +650,6 @@ static int deadline_init_queue(request_queue_t *q, elevator_t *e) INIT_LIST_HEAD(&dd->fifo_list[WRITE]); dd->sort_list[READ] = RB_ROOT; dd->sort_list[WRITE] = RB_ROOT; - dd->dispatch = &q->queue_head; dd->fifo_expire[READ] = read_expire; dd->fifo_expire[WRITE] = write_expire; dd->writes_starved = writes_starved; @@ -748,15 +664,13 @@ static void deadline_put_request(request_queue_t *q, struct request *rq) struct deadline_data *dd = q->elevator->elevator_data; struct deadline_rq *drq = RQ_DATA(rq); - if (drq) { - mempool_free(drq, dd->drq_pool); - rq->elevator_private = NULL; - } + mempool_free(drq, dd->drq_pool); + rq->elevator_private = NULL; } static int deadline_set_request(request_queue_t *q, struct request *rq, struct bio *bio, - int gfp_mask) + gfp_t gfp_mask) { struct deadline_data *dd = q->elevator->elevator_data; struct deadline_rq *drq; @@ -917,9 +831,8 @@ static struct elevator_type iosched_deadline = { .elevator_merge_fn = deadline_merge, .elevator_merged_fn = deadline_merged_request, .elevator_merge_req_fn = deadline_merged_requests, - .elevator_next_req_fn = deadline_next_request, - .elevator_add_req_fn = deadline_insert_request, - .elevator_remove_req_fn = deadline_remove_request, + .elevator_dispatch_fn = deadline_dispatch_requests, + .elevator_add_req_fn = deadline_add_request, .elevator_queue_empty_fn = deadline_queue_empty, .elevator_former_req_fn = deadline_former_request, .elevator_latter_req_fn = deadline_latter_request, diff --git a/drivers/block/elevator.c b/drivers/block/elevator.c index 98f0126a2deb..55621d5c5774 100644 --- a/drivers/block/elevator.c +++ b/drivers/block/elevator.c @@ -34,6 +34,7 @@ #include <linux/slab.h> #include <linux/init.h> #include <linux/compiler.h> +#include <linux/delay.h> #include <asm/uaccess.h> @@ -83,21 +84,11 @@ inline int elv_try_merge(struct request *__rq, struct bio *bio) } EXPORT_SYMBOL(elv_try_merge); -inline int elv_try_last_merge(request_queue_t *q, struct bio *bio) -{ - if (q->last_merge) - return elv_try_merge(q->last_merge, bio); - - return ELEVATOR_NO_MERGE; -} -EXPORT_SYMBOL(elv_try_last_merge); - static struct elevator_type *elevator_find(const char *name) { struct elevator_type *e = NULL; struct list_head *entry; - spin_lock_irq(&elv_list_lock); list_for_each(entry, &elv_list) { struct elevator_type *__e; @@ -108,7 +99,6 @@ static struct elevator_type *elevator_find(const char *name) break; } } - spin_unlock_irq(&elv_list_lock); return e; } @@ -120,12 +110,15 @@ static void elevator_put(struct elevator_type *e) static struct elevator_type *elevator_get(const char *name) { - struct elevator_type *e = elevator_find(name); + struct elevator_type *e; - if (!e) - return NULL; - if (!try_module_get(e->elevator_owner)) - return NULL; + spin_lock_irq(&elv_list_lock); + + e = elevator_find(name); + if (e && !try_module_get(e->elevator_owner)) + e = NULL; + + spin_unlock_irq(&elv_list_lock); return e; } @@ -139,8 +132,6 @@ static int elevator_attach(request_queue_t *q, struct elevator_type *e, eq->ops = &e->ops; eq->elevator_type = e; - INIT_LIST_HEAD(&q->queue_head); - q->last_merge = NULL; q->elevator = eq; if (eq->ops->elevator_init_fn) @@ -153,11 +144,15 @@ static char chosen_elevator[16]; static void elevator_setup_default(void) { + struct elevator_type *e; + /* * check if default is set and exists */ - if (chosen_elevator[0] && elevator_find(chosen_elevator)) + if (chosen_elevator[0] && (e = elevator_get(chosen_elevator))) { + elevator_put(e); return; + } #if defined(CONFIG_IOSCHED_AS) strcpy(chosen_elevator, "anticipatory"); @@ -186,6 +181,11 @@ int elevator_init(request_queue_t *q, char *name) struct elevator_queue *eq; int ret = 0; + INIT_LIST_HEAD(&q->queue_head); + q->last_merge = NULL; + q->end_sector = 0; + q->boundary_rq = NULL; + elevator_setup_default(); if (!name) @@ -220,9 +220,52 @@ void elevator_exit(elevator_t *e) kfree(e); } +/* + * Insert rq into dispatch queue of q. Queue lock must be held on + * entry. If sort != 0, rq is sort-inserted; otherwise, rq will be + * appended to the dispatch queue. To be used by specific elevators. + */ +void elv_dispatch_sort(request_queue_t *q, struct request *rq) +{ + sector_t boundary; + struct list_head *entry; + + if (q->last_merge == rq) + q->last_merge = NULL; + + boundary = q->end_sector; + + list_for_each_prev(entry, &q->queue_head) { + struct request *pos = list_entry_rq(entry); + + if (pos->flags & (REQ_SOFTBARRIER|REQ_HARDBARRIER|REQ_STARTED)) + break; + if (rq->sector >= boundary) { + if (pos->sector < boundary) + continue; + } else { + if (pos->sector >= boundary) + break; + } + if (rq->sector >= pos->sector) + break; + } + + list_add(&rq->queuelist, entry); +} + int elv_merge(request_queue_t *q, struct request **req, struct bio *bio) { elevator_t *e = q->elevator; + int ret; + + if (q->last_merge) { + ret = elv_try_merge(q->last_merge, bio); + if (ret != ELEVATOR_NO_MERGE) { + *req = q->last_merge; + return ret; + } + } if (e->ops->elevator_merge_fn) return e->ops->elevator_merge_fn(q, req, bio); @@ -236,6 +279,8 @@ void elv_merged_request(request_queue_t *q, struct request *rq) if (e->ops->elevator_merged_fn) e->ops->elevator_merged_fn(q, rq); + + q->last_merge = rq; } void elv_merge_requests(request_queue_t *q, struct request *rq, @@ -243,20 +288,13 @@ void elv_merge_requests(request_queue_t *q, struct request *rq, { elevator_t *e = q->elevator; - if (q->last_merge == next) - q->last_merge = NULL; - if (e->ops->elevator_merge_req_fn) e->ops->elevator_merge_req_fn(q, rq, next); + + q->last_merge = rq; } -/* - * For careful internal use by the block layer. Essentially the same as - * a requeue in that it tells the io scheduler that this request is not - * active in the driver or hardware anymore, but we don't want the request - * added back to the scheduler. Function is not exported. - */ -void elv_deactivate_request(request_queue_t *q, struct request *rq) +void elv_requeue_request(request_queue_t *q, struct request *rq) { elevator_t *e = q->elevator; @@ -264,19 +302,14 @@ void elv_deactivate_request(request_queue_t *q, struct request *rq) * it already went through dequeue, we need to decrement the * in_flight count again */ - if (blk_account_rq(rq)) + if (blk_account_rq(rq)) { q->in_flight--; + if (blk_sorted_rq(rq) && e->ops->elevator_deactivate_req_fn) + e->ops->elevator_deactivate_req_fn(q, rq); + } rq->flags &= ~REQ_STARTED; - if (e->ops->elevator_deactivate_req_fn) - e->ops->elevator_deactivate_req_fn(q, rq); -} - -void elv_requeue_request(request_queue_t *q, struct request *rq) -{ - elv_deactivate_request(q, rq); - /* * if this is the flush, requeue the original instead and drop the flush */ @@ -285,31 +318,27 @@ void elv_requeue_request(request_queue_t *q, struct request *rq) rq = rq->end_io_data; } - /* - * the request is prepped and may have some resources allocated. - * allowing unprepped requests to pass this one may cause resource - * deadlock. turn on softbarrier. - */ - rq->flags |= REQ_SOFTBARRIER; - - /* - * if iosched has an explicit requeue hook, then use that. otherwise - * just put the request at the front of the queue - */ - if (q->elevator->ops->elevator_requeue_req_fn) - q->elevator->ops->elevator_requeue_req_fn(q, rq); - else - __elv_add_request(q, rq, ELEVATOR_INSERT_FRONT, 0); + __elv_add_request(q, rq, ELEVATOR_INSERT_FRONT, 0); } void __elv_add_request(request_queue_t *q, struct request *rq, int where, int plug) { - /* - * barriers implicitly indicate back insertion - */ - if (rq->flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER) && - where == ELEVATOR_INSERT_SORT) + if (rq->flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER)) { + /* + * barriers implicitly indicate back insertion + */ + if (where == ELEVATOR_INSERT_SORT) + where = ELEVATOR_INSERT_BACK; + + /* + * this request is scheduling boundary, update end_sector + */ + if (blk_fs_request(rq)) { + q->end_sector = rq_end_sector(rq); + q->boundary_rq = rq; + } + } else if (!(rq->flags & REQ_ELVPRIV) && where == ELEVATOR_INSERT_SORT) where = ELEVATOR_INSERT_BACK; if (plug) @@ -317,23 +346,54 @@ void __elv_add_request(request_queue_t *q, struct request *rq, int where, rq->q = q; - if (!test_bit(QUEUE_FLAG_DRAIN, &q->queue_flags)) { - q->elevator->ops->elevator_add_req_fn(q, rq, where); + switch (where) { + case ELEVATOR_INSERT_FRONT: + rq->flags |= REQ_SOFTBARRIER; - if (blk_queue_plugged(q)) { - int nrq = q->rq.count[READ] + q->rq.count[WRITE] - - q->in_flight; + list_add(&rq->queuelist, &q->queue_head); + break; - if (nrq >= q->unplug_thresh) - __generic_unplug_device(q); - } - } else + case ELEVATOR_INSERT_BACK: + rq->flags |= REQ_SOFTBARRIER; + + while (q->elevator->ops->elevator_dispatch_fn(q, 1)) + ; + list_add_tail(&rq->queuelist, &q->queue_head); /* - * if drain is set, store the request "locally". when the drain - * is finished, the requests will be handed ordered to the io - * scheduler + * We kick the queue here for the following reasons. + * - The elevator might have returned NULL previously + * to delay requests and returned them now. As the + * queue wasn't empty before this request, ll_rw_blk + * won't run the queue on return, resulting in hang. + * - Usually, back inserted requests won't be merged + * with anything. There's no point in delaying queue + * processing. */ - list_add_tail(&rq->queuelist, &q->drain_list); + blk_remove_plug(q); + q->request_fn(q); + break; + + case ELEVATOR_INSERT_SORT: + BUG_ON(!blk_fs_request(rq)); + rq->flags |= REQ_SORTED; + q->elevator->ops->elevator_add_req_fn(q, rq); + if (q->last_merge == NULL && rq_mergeable(rq)) + q->last_merge = rq; + break; + + default: + printk(KERN_ERR "%s: bad insertion point %d\n", + __FUNCTION__, where); + BUG(); + } + + if (blk_queue_plugged(q)) { + int nrq = q->rq.count[READ] + q->rq.count[WRITE] + - q->in_flight; + + if (nrq >= q->unplug_thresh) + __generic_unplug_device(q); + } } void elv_add_request(request_queue_t *q, struct request *rq, int where, @@ -348,13 +408,19 @@ void elv_add_request(request_queue_t *q, struct request *rq, int where, static inline struct request *__elv_next_request(request_queue_t *q) { - struct request *rq = q->elevator->ops->elevator_next_req_fn(q); + struct request *rq; + + if (unlikely(list_empty(&q->queue_head) && + !q->elevator->ops->elevator_dispatch_fn(q, 0))) + return NULL; + + rq = list_entry_rq(q->queue_head.next); /* * if this is a barrier write and the device has to issue a * flush sequence to support it, check how far we are */ - if (rq && blk_fs_request(rq) && blk_barrier_rq(rq)) { + if (blk_fs_request(rq) && blk_barrier_rq(rq)) { BUG_ON(q->ordered == QUEUE_ORDERED_NONE); if (q->ordered == QUEUE_ORDERED_FLUSH && @@ -371,15 +437,30 @@ struct request *elv_next_request(request_queue_t *q) int ret; while ((rq = __elv_next_request(q)) != NULL) { - /* - * just mark as started even if we don't start it, a request - * that has been delayed should not be passed by new incoming - * requests - */ - rq->flags |= REQ_STARTED; + if (!(rq->flags & REQ_STARTED)) { + elevator_t *e = q->elevator; - if (rq == q->last_merge) - q->last_merge = NULL; + /* + * This is the first time the device driver + * sees this request (possibly after + * requeueing). Notify IO scheduler. + */ + if (blk_sorted_rq(rq) && + e->ops->elevator_activate_req_fn) + e->ops->elevator_activate_req_fn(q, rq); + + /* + * just mark as started even if we don't start + * it, a request that has been delayed should + * not be passed by new incoming requests + */ + rq->flags |= REQ_STARTED; + } + + if (!q->boundary_rq || q->boundary_rq == rq) { + q->end_sector = rq_end_sector(rq); + q->boundary_rq = NULL; + } if ((rq->flags & REQ_DONTPREP) || !q->prep_rq_fn) break; @@ -391,9 +472,9 @@ struct request *elv_next_request(request_queue_t *q) /* * the request may have been (partially) prepped. * we need to keep this request in the front to - * avoid resource deadlock. turn on softbarrier. + * avoid resource deadlock. REQ_STARTED will + * prevent other fs requests from passing this one. */ - rq->flags |= REQ_SOFTBARRIER; rq = NULL; break; } else if (ret == BLKPREP_KILL) { @@ -416,42 +497,32 @@ struct request *elv_next_request(request_queue_t *q) return rq; } -void elv_remove_request(request_queue_t *q, struct request *rq) +void elv_dequeue_request(request_queue_t *q, struct request *rq) { - elevator_t *e = q->elevator; + BUG_ON(list_empty(&rq->queuelist)); + + list_del_init(&rq->queuelist); /* * the time frame between a request being removed from the lists * and to it is freed is accounted as io that is in progress at - * the driver side. note that we only account requests that the - * driver has seen (REQ_STARTED set), to avoid false accounting - * for request-request merges + * the driver side. */ if (blk_account_rq(rq)) q->in_flight++; - - /* - * the main clearing point for q->last_merge is on retrieval of - * request by driver (it calls elv_next_request()), but it _can_ - * also happen here if a request is added to the queue but later - * deleted without ever being given to driver (merged with another - * request). - */ - if (rq == q->last_merge) - q->last_merge = NULL; - - if (e->ops->elevator_remove_req_fn) - e->ops->elevator_remove_req_fn(q, rq); } int elv_queue_empty(request_queue_t *q) { elevator_t *e = q->elevator; + if (!list_empty(&q->queue_head)) + return 0; + if (e->ops->elevator_queue_empty_fn) return e->ops->elevator_queue_empty_fn(q); - return list_empty(&q->queue_head); + return 1; } struct request *elv_latter_request(request_queue_t *q, struct request *rq) @@ -487,7 +558,7 @@ struct request *elv_former_request(request_queue_t *q, struct request *rq) } int elv_set_request(request_queue_t *q, struct request *rq, struct bio *bio, - int gfp_mask) + gfp_t gfp_mask) { elevator_t *e = q->elevator; @@ -523,11 +594,11 @@ void elv_completed_request(request_queue_t *q, struct request *rq) /* * request is released from the driver, io must be done */ - if (blk_account_rq(rq)) + if (blk_account_rq(rq)) { q->in_flight--; - - if (e->ops->elevator_completed_req_fn) - e->ops->elevator_completed_req_fn(q, rq); + if (blk_sorted_rq(rq) && e->ops->elevator_completed_req_fn) + e->ops->elevator_completed_req_fn(q, rq); + } } int elv_register_queue(struct request_queue *q) @@ -555,10 +626,9 @@ void elv_unregister_queue(struct request_queue *q) int elv_register(struct elevator_type *e) { + spin_lock_irq(&elv_list_lock); if (elevator_find(e->elevator_name)) BUG(); - - spin_lock_irq(&elv_list_lock); list_add_tail(&e->list, &elv_list); spin_unlock_irq(&elv_list_lock); @@ -582,25 +652,36 @@ EXPORT_SYMBOL_GPL(elv_unregister); * switch to new_e io scheduler. be careful not to introduce deadlocks - * we don't free the old io scheduler, before we have allocated what we * need for the new one. this way we have a chance of going back to the old - * one, if the new one fails init for some reason. we also do an intermediate - * switch to noop to ensure safety with stack-allocated requests, since they - * don't originate from the block layer allocator. noop is safe here, because - * it never needs to touch the elevator itself for completion events. DRAIN - * flags will make sure we don't touch it for additions either. + * one, if the new one fails init for some reason. */ static void elevator_switch(request_queue_t *q, struct elevator_type *new_e) { - elevator_t *e = kmalloc(sizeof(elevator_t), GFP_KERNEL); - struct elevator_type *noop_elevator = NULL; - elevator_t *old_elevator; + elevator_t *old_elevator, *e; + /* + * Allocate new elevator + */ + e = kmalloc(sizeof(elevator_t), GFP_KERNEL); if (!e) goto error; /* - * first step, drain requests from the block freelist + * Turn on BYPASS and drain all requests w/ elevator private data */ - blk_wait_queue_drained(q, 0); + spin_lock_irq(q->queue_lock); + + set_bit(QUEUE_FLAG_ELVSWITCH, &q->queue_flags); + + while (q->elevator->ops->elevator_dispatch_fn(q, 1)) + ; + + while (q->rq.elvpriv) { + spin_unlock_irq(q->queue_lock); + msleep(10); + spin_lock_irq(q->queue_lock); + } + + spin_unlock_irq(q->queue_lock); /* * unregister old elevator data @@ -609,18 +690,6 @@ static void elevator_switch(request_queue_t *q, struct elevator_type *new_e) old_elevator = q->elevator; /* - * next step, switch to noop since it uses no private rq structures - * and doesn't allocate any memory for anything. then wait for any - * non-fs requests in-flight - */ - noop_elevator = elevator_get("noop"); - spin_lock_irq(q->queue_lock); - elevator_attach(q, noop_elevator, e); - spin_unlock_irq(q->queue_lock); - - blk_wait_queue_drained(q, 1); - - /* * attach and start new elevator */ if (elevator_attach(q, new_e, e)) @@ -630,11 +699,10 @@ static void elevator_switch(request_queue_t *q, struct elevator_type *new_e) goto fail_register; /* - * finally exit old elevator and start queue again + * finally exit old elevator and turn off BYPASS. */ elevator_exit(old_elevator); - blk_finish_queue_drain(q); - elevator_put(noop_elevator); + clear_bit(QUEUE_FLAG_ELVSWITCH, &q->queue_flags); return; fail_register: @@ -643,13 +711,13 @@ fail_register: * one again (along with re-adding the sysfs dir) */ elevator_exit(e); + e = NULL; fail: q->elevator = old_elevator; elv_register_queue(q); - blk_finish_queue_drain(q); + clear_bit(QUEUE_FLAG_ELVSWITCH, &q->queue_flags); + kfree(e); error: - if (noop_elevator) - elevator_put(noop_elevator); elevator_put(new_e); printk(KERN_ERR "elevator: switch to %s failed\n",new_e->elevator_name); } @@ -701,11 +769,12 @@ ssize_t elv_iosched_show(request_queue_t *q, char *name) return len; } +EXPORT_SYMBOL(elv_dispatch_sort); EXPORT_SYMBOL(elv_add_request); EXPORT_SYMBOL(__elv_add_request); EXPORT_SYMBOL(elv_requeue_request); EXPORT_SYMBOL(elv_next_request); -EXPORT_SYMBOL(elv_remove_request); +EXPORT_SYMBOL(elv_dequeue_request); EXPORT_SYMBOL(elv_queue_empty); EXPORT_SYMBOL(elv_completed_request); EXPORT_SYMBOL(elevator_exit); diff --git a/drivers/block/genhd.c b/drivers/block/genhd.c index d42840cc0d1d..486ce1fdeb8c 100644 --- a/drivers/block/genhd.c +++ b/drivers/block/genhd.c @@ -337,10 +337,30 @@ static ssize_t disk_attr_show(struct kobject *kobj, struct attribute *attr, return ret; } +static ssize_t disk_attr_store(struct kobject * kobj, struct attribute * attr, + const char *page, size_t count) +{ + struct gendisk *disk = to_disk(kobj); + struct disk_attribute *disk_attr = + container_of(attr,struct disk_attribute,attr); + ssize_t ret = 0; + + if (disk_attr->store) + ret = disk_attr->store(disk, page, count); + return ret; +} + static struct sysfs_ops disk_sysfs_ops = { .show = &disk_attr_show, + .store = &disk_attr_store, }; +static ssize_t disk_uevent_store(struct gendisk * disk, + const char *buf, size_t count) +{ + kobject_hotplug(&disk->kobj, KOBJ_ADD); + return count; +} static ssize_t disk_dev_read(struct gendisk * disk, char *page) { dev_t base = MKDEV(disk->major, disk->first_minor); @@ -382,6 +402,10 @@ static ssize_t disk_stats_read(struct gendisk * disk, char *page) jiffies_to_msecs(disk_stat_read(disk, io_ticks)), jiffies_to_msecs(disk_stat_read(disk, time_in_queue))); } +static struct disk_attribute disk_attr_uevent = { + .attr = {.name = "uevent", .mode = S_IWUSR }, + .store = disk_uevent_store +}; static struct disk_attribute disk_attr_dev = { .attr = {.name = "dev", .mode = S_IRUGO }, .show = disk_dev_read @@ -404,6 +428,7 @@ static struct disk_attribute disk_attr_stat = { }; static struct attribute * default_attrs[] = { + &disk_attr_uevent.attr, &disk_attr_dev.attr, &disk_attr_range.attr, &disk_attr_removable.attr, diff --git a/drivers/block/ll_rw_blk.c b/drivers/block/ll_rw_blk.c index baedac522945..0af73512b9a8 100644 --- a/drivers/block/ll_rw_blk.c +++ b/drivers/block/ll_rw_blk.c @@ -263,8 +263,6 @@ void blk_queue_make_request(request_queue_t * q, make_request_fn * mfn) blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH); blk_queue_activity_fn(q, NULL, NULL); - - INIT_LIST_HEAD(&q->drain_list); } EXPORT_SYMBOL(blk_queue_make_request); @@ -353,6 +351,8 @@ static void blk_pre_flush_end_io(struct request *flush_rq) struct request *rq = flush_rq->end_io_data; request_queue_t *q = rq->q; + elv_completed_request(q, flush_rq); + rq->flags |= REQ_BAR_PREFLUSH; if (!flush_rq->errors) @@ -369,6 +369,8 @@ static void blk_post_flush_end_io(struct request *flush_rq) struct request *rq = flush_rq->end_io_data; request_queue_t *q = rq->q; + elv_completed_request(q, flush_rq); + rq->flags |= REQ_BAR_POSTFLUSH; q->end_flush_fn(q, flush_rq); @@ -408,8 +410,6 @@ struct request *blk_start_pre_flush(request_queue_t *q, struct request *rq) if (!list_empty(&rq->queuelist)) blkdev_dequeue_request(rq); - elv_deactivate_request(q, rq); - flush_rq->end_io_data = rq; flush_rq->end_io = blk_pre_flush_end_io; @@ -1040,6 +1040,7 @@ EXPORT_SYMBOL(blk_queue_invalidate_tags); static char *rq_flags[] = { "REQ_RW", "REQ_FAILFAST", + "REQ_SORTED", "REQ_SOFTBARRIER", "REQ_HARDBARRIER", "REQ_CMD", @@ -1047,6 +1048,7 @@ static char *rq_flags[] = { "REQ_STARTED", "REQ_DONTPREP", "REQ_QUEUED", + "REQ_ELVPRIV", "REQ_PC", "REQ_BLOCK_PC", "REQ_SENSE", @@ -1637,9 +1639,9 @@ static int blk_init_free_list(request_queue_t *q) rl->count[READ] = rl->count[WRITE] = 0; rl->starved[READ] = rl->starved[WRITE] = 0; + rl->elvpriv = 0; init_waitqueue_head(&rl->wait[READ]); init_waitqueue_head(&rl->wait[WRITE]); - init_waitqueue_head(&rl->drain); rl->rq_pool = mempool_create_node(BLKDEV_MIN_RQ, mempool_alloc_slab, mempool_free_slab, request_cachep, q->node); @@ -1652,13 +1654,13 @@ static int blk_init_free_list(request_queue_t *q) static int __make_request(request_queue_t *, struct bio *); -request_queue_t *blk_alloc_queue(int gfp_mask) +request_queue_t *blk_alloc_queue(gfp_t gfp_mask) { return blk_alloc_queue_node(gfp_mask, -1); } EXPORT_SYMBOL(blk_alloc_queue); -request_queue_t *blk_alloc_queue_node(int gfp_mask, int node_id) +request_queue_t *blk_alloc_queue_node(gfp_t gfp_mask, int node_id) { request_queue_t *q; @@ -1782,12 +1784,14 @@ EXPORT_SYMBOL(blk_get_queue); static inline void blk_free_request(request_queue_t *q, struct request *rq) { - elv_put_request(q, rq); + if (rq->flags & REQ_ELVPRIV) + elv_put_request(q, rq); mempool_free(rq, q->rq.rq_pool); } static inline struct request * -blk_alloc_request(request_queue_t *q, int rw, struct bio *bio, int gfp_mask) +blk_alloc_request(request_queue_t *q, int rw, struct bio *bio, + int priv, gfp_t gfp_mask) { struct request *rq = mempool_alloc(q->rq.rq_pool, gfp_mask); @@ -1800,11 +1804,15 @@ blk_alloc_request(request_queue_t *q, int rw, struct bio *bio, int gfp_mask) */ rq->flags = rw; - if (!elv_set_request(q, rq, bio, gfp_mask)) - return rq; + if (priv) { + if (unlikely(elv_set_request(q, rq, bio, gfp_mask))) { + mempool_free(rq, q->rq.rq_pool); + return NULL; + } + rq->flags |= REQ_ELVPRIV; + } - mempool_free(rq, q->rq.rq_pool); - return NULL; + return rq; } /* @@ -1860,22 +1868,18 @@ static void __freed_request(request_queue_t *q, int rw) * A request has just been released. Account for it, update the full and * congestion status, wake up any waiters. Called under q->queue_lock. */ -static void freed_request(request_queue_t *q, int rw) +static void freed_request(request_queue_t *q, int rw, int priv) { struct request_list *rl = &q->rq; rl->count[rw]--; + if (priv) + rl->elvpriv--; __freed_request(q, rw); if (unlikely(rl->starved[rw ^ 1])) __freed_request(q, rw ^ 1); - - if (!rl->count[READ] && !rl->count[WRITE]) { - smp_mb(); - if (unlikely(waitqueue_active(&rl->drain))) - wake_up(&rl->drain); - } } #define blkdev_free_rq(list) list_entry((list)->next, struct request, queuelist) @@ -1885,14 +1889,12 @@ static void freed_request(request_queue_t *q, int rw) * Returns !NULL on success, with queue_lock *not held*. */ static struct request *get_request(request_queue_t *q, int rw, struct bio *bio, - int gfp_mask) + gfp_t gfp_mask) { struct request *rq = NULL; struct request_list *rl = &q->rq; struct io_context *ioc = current_io_context(GFP_ATOMIC); - - if (unlikely(test_bit(QUEUE_FLAG_DRAIN, &q->queue_flags))) - goto out; + int priv; if (rl->count[rw]+1 >= q->nr_requests) { /* @@ -1937,9 +1939,14 @@ get_rq: rl->starved[rw] = 0; if (rl->count[rw] >= queue_congestion_on_threshold(q)) set_queue_congested(q, rw); + + priv = !test_bit(QUEUE_FLAG_ELVSWITCH, &q->queue_flags); + if (priv) + rl->elvpriv++; + spin_unlock_irq(q->queue_lock); - rq = blk_alloc_request(q, rw, bio, gfp_mask); + rq = blk_alloc_request(q, rw, bio, priv, gfp_mask); if (!rq) { /* * Allocation failed presumably due to memory. Undo anything @@ -1949,7 +1956,7 @@ get_rq: * wait queue, but this is pretty rare. */ spin_lock_irq(q->queue_lock); - freed_request(q, rw); + freed_request(q, rw, priv); /* * in the very unlikely event that allocation failed and no @@ -2019,7 +2026,7 @@ static struct request *get_request_wait(request_queue_t *q, int rw, return rq; } -struct request *blk_get_request(request_queue_t *q, int rw, int gfp_mask) +struct request *blk_get_request(request_queue_t *q, int rw, gfp_t gfp_mask) { struct request *rq; @@ -2251,7 +2258,7 @@ EXPORT_SYMBOL(blk_rq_unmap_user); * @gfp_mask: memory allocation flags */ int blk_rq_map_kern(request_queue_t *q, struct request *rq, void *kbuf, - unsigned int len, unsigned int gfp_mask) + unsigned int len, gfp_t gfp_mask) { struct bio *bio; @@ -2433,13 +2440,15 @@ void disk_round_stats(struct gendisk *disk) { unsigned long now = jiffies; - __disk_stat_add(disk, time_in_queue, - disk->in_flight * (now - disk->stamp)); - disk->stamp = now; + if (now == disk->stamp) + return; - if (disk->in_flight) - __disk_stat_add(disk, io_ticks, (now - disk->stamp_idle)); - disk->stamp_idle = now; + if (disk->in_flight) { + __disk_stat_add(disk, time_in_queue, + disk->in_flight * (now - disk->stamp)); + __disk_stat_add(disk, io_ticks, (now - disk->stamp)); + } + disk->stamp = now; } /* @@ -2454,6 +2463,8 @@ static void __blk_put_request(request_queue_t *q, struct request *req) if (unlikely(--req->ref_count)) return; + elv_completed_request(q, req); + req->rq_status = RQ_INACTIVE; req->rl = NULL; @@ -2463,26 +2474,25 @@ static void __blk_put_request(request_queue_t *q, struct request *req) */ if (rl) { int rw = rq_data_dir(req); - - elv_completed_request(q, req); + int priv = req->flags & REQ_ELVPRIV; BUG_ON(!list_empty(&req->queuelist)); blk_free_request(q, req); - freed_request(q, rw); + freed_request(q, rw, priv); } } void blk_put_request(struct request *req) { + unsigned long flags; + request_queue_t *q = req->q; + /* - * if req->rl isn't set, this request didnt originate from the - * block layer, so it's safe to just disregard it + * Gee, IDE calls in w/ NULL q. Fix IDE and remove the + * following if (q) test. */ - if (req->rl) { - unsigned long flags; - request_queue_t *q = req->q; - + if (q) { spin_lock_irqsave(q->queue_lock, flags); __blk_put_request(q, req); spin_unlock_irqrestore(q->queue_lock, flags); @@ -2797,97 +2807,6 @@ static inline void blk_partition_remap(struct bio *bio) } } -void blk_finish_queue_drain(request_queue_t *q) -{ - struct request_list *rl = &q->rq; - struct request *rq; - int requeued = 0; - - spin_lock_irq(q->queue_lock); - clear_bit(QUEUE_FLAG_DRAIN, &q->queue_flags); - - while (!list_empty(&q->drain_list)) { - rq = list_entry_rq(q->drain_list.next); - - list_del_init(&rq->queuelist); - elv_requeue_request(q, rq); - requeued++; - } - - if (requeued) - q->request_fn(q); - - spin_unlock_irq(q->queue_lock); - - wake_up(&rl->wait[0]); - wake_up(&rl->wait[1]); - wake_up(&rl->drain); -} - -static int wait_drain(request_queue_t *q, struct request_list *rl, int dispatch) -{ - int wait = rl->count[READ] + rl->count[WRITE]; - - if (dispatch) - wait += !list_empty(&q->queue_head); - - return wait; -} - -/* - * We rely on the fact that only requests allocated through blk_alloc_request() - * have io scheduler private data structures associated with them. Any other - * type of request (allocated on stack or through kmalloc()) should not go - * to the io scheduler core, but be attached to the queue head instead. - */ -void blk_wait_queue_drained(request_queue_t *q, int wait_dispatch) -{ - struct request_list *rl = &q->rq; - DEFINE_WAIT(wait); - - spin_lock_irq(q->queue_lock); - set_bit(QUEUE_FLAG_DRAIN, &q->queue_flags); - - while (wait_drain(q, rl, wait_dispatch)) { - prepare_to_wait(&rl->drain, &wait, TASK_UNINTERRUPTIBLE); - - if (wait_drain(q, rl, wait_dispatch)) { - __generic_unplug_device(q); - spin_unlock_irq(q->queue_lock); - io_schedule(); - spin_lock_irq(q->queue_lock); - } - - finish_wait(&rl->drain, &wait); - } - - spin_unlock_irq(q->queue_lock); -} - -/* - * block waiting for the io scheduler being started again. - */ -static inline void block_wait_queue_running(request_queue_t *q) -{ - DEFINE_WAIT(wait); - - while (unlikely(test_bit(QUEUE_FLAG_DRAIN, &q->queue_flags))) { - struct request_list *rl = &q->rq; - - prepare_to_wait_exclusive(&rl->drain, &wait, - TASK_UNINTERRUPTIBLE); - - /* - * re-check the condition. avoids using prepare_to_wait() - * in the fast path (queue is running) - */ - if (test_bit(QUEUE_FLAG_DRAIN, &q->queue_flags)) - io_schedule(); - - finish_wait(&rl->drain, &wait); - } -} - static void handle_bad_sector(struct bio *bio) { char b[BDEVNAME_SIZE]; @@ -2983,8 +2902,6 @@ end_io: if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags))) goto end_io; - block_wait_queue_running(q); - /* * If this device has partitions, remap block n * of partition p to block n+start(p) of the disk. @@ -3393,7 +3310,7 @@ void exit_io_context(void) * but since the current task itself holds a reference, the context can be * used in general code, so long as it stays within `current` context. */ -struct io_context *current_io_context(int gfp_flags) +struct io_context *current_io_context(gfp_t gfp_flags) { struct task_struct *tsk = current; struct io_context *ret; @@ -3424,7 +3341,7 @@ EXPORT_SYMBOL(current_io_context); * * This is always called in the context of the task which submitted the I/O. */ -struct io_context *get_io_context(int gfp_flags) +struct io_context *get_io_context(gfp_t gfp_flags) { struct io_context *ret; ret = current_io_context(gfp_flags); diff --git a/drivers/block/loop.c b/drivers/block/loop.c index b35e08876dd4..96c664af8d06 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -881,7 +881,7 @@ loop_init_xfer(struct loop_device *lo, struct loop_func_table *xfer, static int loop_clr_fd(struct loop_device *lo, struct block_device *bdev) { struct file *filp = lo->lo_backing_file; - int gfp = lo->old_gfp_mask; + gfp_t gfp = lo->old_gfp_mask; if (lo->lo_state != Lo_bound) return -ENXIO; diff --git a/drivers/block/noop-iosched.c b/drivers/block/noop-iosched.c index b1730b62c37e..f56b8edb06e4 100644 --- a/drivers/block/noop-iosched.c +++ b/drivers/block/noop-iosched.c @@ -7,57 +7,19 @@ #include <linux/module.h> #include <linux/init.h> -/* - * See if we can find a request that this buffer can be coalesced with. - */ -static int elevator_noop_merge(request_queue_t *q, struct request **req, - struct bio *bio) -{ - int ret; - - ret = elv_try_last_merge(q, bio); - if (ret != ELEVATOR_NO_MERGE) - *req = q->last_merge; - - return ret; -} - -static void elevator_noop_merge_requests(request_queue_t *q, struct request *req, - struct request *next) -{ - list_del_init(&next->queuelist); -} - -static void elevator_noop_add_request(request_queue_t *q, struct request *rq, - int where) +static void elevator_noop_add_request(request_queue_t *q, struct request *rq) { - if (where == ELEVATOR_INSERT_FRONT) - list_add(&rq->queuelist, &q->queue_head); - else - list_add_tail(&rq->queuelist, &q->queue_head); - - /* - * new merges must not precede this barrier - */ - if (rq->flags & REQ_HARDBARRIER) - q->last_merge = NULL; - else if (!q->last_merge) - q->last_merge = rq; + elv_dispatch_add_tail(q, rq); } -static struct request *elevator_noop_next_request(request_queue_t *q) +static int elevator_noop_dispatch(request_queue_t *q, int force) { - if (!list_empty(&q->queue_head)) - return list_entry_rq(q->queue_head.next); - - return NULL; + return 0; } static struct elevator_type elevator_noop = { .ops = { - .elevator_merge_fn = elevator_noop_merge, - .elevator_merge_req_fn = elevator_noop_merge_requests, - .elevator_next_req_fn = elevator_noop_next_request, + .elevator_dispatch_fn = elevator_noop_dispatch, .elevator_add_req_fn = elevator_noop_add_request, }, .elevator_name = "noop", diff --git a/drivers/block/paride/pg.c b/drivers/block/paride/pg.c index b3982395f22b..82f2d6d2eeef 100644 --- a/drivers/block/paride/pg.c +++ b/drivers/block/paride/pg.c @@ -674,7 +674,7 @@ static int __init pg_init(void) for (unit = 0; unit < PG_UNITS; unit++) { struct pg *dev = &devices[unit]; if (dev->present) { - class_device_create(pg_class, MKDEV(major, unit), + class_device_create(pg_class, NULL, MKDEV(major, unit), NULL, "pg%u", unit); err = devfs_mk_cdev(MKDEV(major, unit), S_IFCHR | S_IRUSR | S_IWUSR, "pg/%u", diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c index d8d35233cf49..686c95573452 100644 --- a/drivers/block/paride/pt.c +++ b/drivers/block/paride/pt.c @@ -971,7 +971,7 @@ static int __init pt_init(void) devfs_mk_dir("pt"); for (unit = 0; unit < PT_UNITS; unit++) if (pt[unit].present) { - class_device_create(pt_class, MKDEV(major, unit), + class_device_create(pt_class, NULL, MKDEV(major, unit), NULL, "pt%d", unit); err = devfs_mk_cdev(MKDEV(major, unit), S_IFCHR | S_IRUSR | S_IWUSR, @@ -980,7 +980,7 @@ static int __init pt_init(void) class_device_destroy(pt_class, MKDEV(major, unit)); goto out_class; } - class_device_create(pt_class, MKDEV(major, unit + 128), + class_device_create(pt_class, NULL, MKDEV(major, unit + 128), NULL, "pt%dn", unit); err = devfs_mk_cdev(MKDEV(major, unit + 128), S_IFCHR | S_IRUSR | S_IWUSR, diff --git a/drivers/block/rd.c b/drivers/block/rd.c index 145c1fbffe01..68c60a5bcdab 100644 --- a/drivers/block/rd.c +++ b/drivers/block/rd.c @@ -348,7 +348,7 @@ static int rd_open(struct inode *inode, struct file *filp) struct block_device *bdev = inode->i_bdev; struct address_space *mapping; unsigned bsize; - int gfp_mask; + gfp_t gfp_mask; inode = igrab(bdev->bd_inode); rd_bdev[unit] = bdev; diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c index d57007b92f77..1ded3b433459 100644 --- a/drivers/block/sx8.c +++ b/drivers/block/sx8.c @@ -1,7 +1,7 @@ /* * sx8.c: Driver for Promise SATA SX8 looks-like-I2O hardware * - * Copyright 2004 Red Hat, Inc. + * Copyright 2004-2005 Red Hat, Inc. * * Author/maintainer: Jeff Garzik <jgarzik@pobox.com> * @@ -31,10 +31,6 @@ #include <asm/semaphore.h> #include <asm/uaccess.h> -MODULE_AUTHOR("Jeff Garzik"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Promise SATA SX8 block driver"); - #if 0 #define CARM_DEBUG #define CARM_VERBOSE_DEBUG @@ -45,9 +41,35 @@ MODULE_DESCRIPTION("Promise SATA SX8 block driver"); #undef CARM_NDEBUG #define DRV_NAME "sx8" -#define DRV_VERSION "0.8" +#define DRV_VERSION "1.0" #define PFX DRV_NAME ": " +MODULE_AUTHOR("Jeff Garzik"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Promise SATA SX8 block driver"); +MODULE_VERSION(DRV_VERSION); + +/* + * SX8 hardware has a single message queue for all ATA ports. + * When this driver was written, the hardware (firmware?) would + * corrupt data eventually, if more than one request was outstanding. + * As one can imagine, having 8 ports bottlenecking on a single + * command hurts performance. + * + * Based on user reports, later versions of the hardware (firmware?) + * seem to be able to survive with more than one command queued. + * + * Therefore, we default to the safe option -- 1 command -- but + * allow the user to increase this. + * + * SX8 should be able to support up to ~60 queued commands (CARM_MAX_REQ), + * but problems seem to occur when you exceed ~30, even on newer hardware. + */ +static int max_queue = 1; +module_param(max_queue, int, 0444); +MODULE_PARM_DESC(max_queue, "Maximum number of queued commands. (min==1, max==30, safe==1)"); + + #define NEXT_RESP(idx) ((idx + 1) % RMSG_Q_LEN) /* 0xf is just arbitrary, non-zero noise; this is sorta like poisoning */ @@ -90,12 +112,10 @@ enum { /* command message queue limits */ CARM_MAX_REQ = 64, /* max command msgs per host */ - CARM_MAX_Q = 1, /* one command at a time */ CARM_MSG_LOW_WATER = (CARM_MAX_REQ / 4), /* refill mark */ /* S/G limits, host-wide and per-request */ CARM_MAX_REQ_SG = 32, /* max s/g entries per request */ - CARM_SG_BOUNDARY = 0xffffUL, /* s/g segment boundary */ CARM_MAX_HOST_SG = 600, /* max s/g entries per host */ CARM_SG_LOW_WATER = (CARM_MAX_HOST_SG / 4), /* re-fill mark */ @@ -181,6 +201,10 @@ enum { FL_DYN_MAJOR = (1 << 17), }; +enum { + CARM_SG_BOUNDARY = 0xffffUL, /* s/g segment boundary */ +}; + enum scatter_gather_types { SGT_32BIT = 0, SGT_64BIT = 1, @@ -218,7 +242,6 @@ static const char *state_name[] = { struct carm_port { unsigned int port_no; - unsigned int n_queued; struct gendisk *disk; struct carm_host *host; @@ -448,7 +471,7 @@ static inline int carm_lookup_bucket(u32 msg_size) for (i = 0; i < ARRAY_SIZE(msg_sizes); i++) if (msg_size <= msg_sizes[i]) return i; - + return -ENOENT; } @@ -509,7 +532,7 @@ static struct carm_request *carm_get_request(struct carm_host *host) if (host->hw_sg_used >= (CARM_MAX_HOST_SG - CARM_MAX_REQ_SG)) return NULL; - for (i = 0; i < CARM_MAX_Q; i++) + for (i = 0; i < max_queue; i++) if ((host->msg_alloc & (1ULL << i)) == 0) { struct carm_request *crq = &host->req[i]; crq->port = NULL; @@ -521,14 +544,14 @@ static struct carm_request *carm_get_request(struct carm_host *host) assert(host->n_msgs <= CARM_MAX_REQ); return crq; } - + DPRINTK("no request available, returning NULL\n"); return NULL; } static int carm_put_request(struct carm_host *host, struct carm_request *crq) { - assert(crq->tag < CARM_MAX_Q); + assert(crq->tag < max_queue); if (unlikely((host->msg_alloc & (1ULL << crq->tag)) == 0)) return -EINVAL; /* tried to clear a tag that was not active */ @@ -791,7 +814,7 @@ static inline void carm_end_rq(struct carm_host *host, struct carm_request *crq, int is_ok) { carm_end_request_queued(host, crq, is_ok); - if (CARM_MAX_Q == 1) + if (max_queue == 1) carm_round_robin(host); else if ((host->n_msgs <= CARM_MSG_LOW_WATER) && (host->hw_sg_used <= CARM_SG_LOW_WATER)) { diff --git a/drivers/block/ub.c b/drivers/block/ub.c index ed4d5006fe62..bfb23d543ff7 100644 --- a/drivers/block/ub.c +++ b/drivers/block/ub.c @@ -1512,7 +1512,7 @@ static void ub_state_sense(struct ub_dev *sc, struct ub_scsi_cmd *cmd) scmd->nsg = 1; sg = &scmd->sgv[0]; sg->page = virt_to_page(sc->top_sense); - sg->offset = (unsigned int)sc->top_sense & (PAGE_SIZE-1); + sg->offset = (unsigned long)sc->top_sense & (PAGE_SIZE-1); sg->length = UB_SENSE_SIZE; scmd->len = UB_SENSE_SIZE; scmd->lun = cmd->lun; @@ -1891,7 +1891,7 @@ static int ub_sync_read_cap(struct ub_dev *sc, struct ub_lun *lun, cmd->nsg = 1; sg = &cmd->sgv[0]; sg->page = virt_to_page(p); - sg->offset = (unsigned int)p & (PAGE_SIZE-1); + sg->offset = (unsigned long)p & (PAGE_SIZE-1); sg->length = 8; cmd->len = 8; cmd->lun = lun; diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig index 543f93e0f23f..b9fbe6e7f9ae 100644 --- a/drivers/bluetooth/Kconfig +++ b/drivers/bluetooth/Kconfig @@ -55,14 +55,6 @@ config BT_HCIUART_BCSP Say Y here to compile support for HCI BCSP protocol. -config BT_HCIUART_BCSP_TXCRC - bool "Transmit CRC with every BCSP packet" - depends on BT_HCIUART_BCSP - help - If you say Y here, a 16-bit CRC checksum will be transmitted along with - every BCSP (BlueCore Serial Protocol) packet sent to the Bluetooth chip. - This increases reliability, but slightly reduces efficiency. - config BT_HCIBCM203X tristate "HCI BCM203x USB driver" depends on USB diff --git a/drivers/bluetooth/bpa10x.c b/drivers/bluetooth/bpa10x.c index 4fa85234d8b5..0db0400519c9 100644 --- a/drivers/bluetooth/bpa10x.c +++ b/drivers/bluetooth/bpa10x.c @@ -550,6 +550,9 @@ static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id * if (ignore) return -ENODEV; + if (intf->cur_altsetting->desc.bInterfaceNumber > 0) + return -ENODEV; + data = kmalloc(sizeof(*data), GFP_KERNEL); if (!data) { BT_ERR("Can't allocate data structure"); diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c index 0ee324e1265d..0a4761415ac3 100644 --- a/drivers/bluetooth/hci_bcsp.c +++ b/drivers/bluetooth/hci_bcsp.c @@ -1,35 +1,27 @@ -/* - BlueCore Serial Protocol (BCSP) for Linux Bluetooth stack (BlueZ). - Copyright 2002 by Fabrizio Gennari <fabrizio.gennari@philips.com> - - Based on - hci_h4.c by Maxim Krasnyansky <maxk@qualcomm.com> - ABCSP by Carl Orsborn <cjo@csr.com> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License version 2 as - published by the Free Software Foundation; - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. - IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY - CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES - WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - - ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, - COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS - SOFTWARE IS DISCLAIMED. -*/ - /* - * $Id: hci_bcsp.c,v 1.2 2002/09/26 05:05:14 maxk Exp $ + * + * Bluetooth HCI UART driver + * + * Copyright (C) 2002-2003 Fabrizio Gennari <fabrizio.gennari@philips.com> + * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * */ -#define VERSION "0.2" - #include <linux/config.h> #include <linux/module.h> @@ -52,16 +44,56 @@ #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> + #include "hci_uart.h" -#include "hci_bcsp.h" #ifndef CONFIG_BT_HCIUART_DEBUG #undef BT_DBG #define BT_DBG( A... ) #endif +#define VERSION "0.3" + +static int txcrc = 1; static int hciextn = 1; +#define BCSP_TXWINSIZE 4 + +#define BCSP_ACK_PKT 0x05 +#define BCSP_LE_PKT 0x06 + +struct bcsp_struct { + struct sk_buff_head unack; /* Unack'ed packets queue */ + struct sk_buff_head rel; /* Reliable packets queue */ + struct sk_buff_head unrel; /* Unreliable packets queue */ + + unsigned long rx_count; + struct sk_buff *rx_skb; + u8 rxseq_txack; /* rxseq == txack. */ + u8 rxack; /* Last packet sent by us that the peer ack'ed */ + struct timer_list tbcsp; + + enum { + BCSP_W4_PKT_DELIMITER, + BCSP_W4_PKT_START, + BCSP_W4_BCSP_HDR, + BCSP_W4_DATA, + BCSP_W4_CRC + } rx_state; + + enum { + BCSP_ESCSTATE_NOESC, + BCSP_ESCSTATE_ESC + } rx_esc_state; + + u8 use_crc; + u16 message_crc; + u8 txack_req; /* Do we need to send ack's to the peer? */ + + /* Reliable packet sequence number - used to assign seq to each rel pkt. */ + u8 msgq_txseq; +}; + /* ---- BCSP CRC calculation ---- */ /* Table for calculating CRC for polynomial 0x1021, LSB processed first, @@ -111,6 +143,7 @@ static u16 bcsp_crc_reverse(u16 crc) rev |= (crc & 1); crc = crc >> 1; } + return (rev); } @@ -119,6 +152,7 @@ static u16 bcsp_crc_reverse(u16 crc) static void bcsp_slip_msgdelim(struct sk_buff *skb) { const char pkt_delim = 0xc0; + memcpy(skb_put(skb, 1), &pkt_delim, 1); } @@ -173,11 +207,8 @@ static struct sk_buff *bcsp_prepare_pkt(struct bcsp_struct *bcsp, u8 *data, { struct sk_buff *nskb; u8 hdr[4], chan; - int rel, i; - -#ifdef CONFIG_BT_HCIUART_BCSP_TXCRC u16 BCSP_CRC_INIT(bcsp_txmsg_crc); -#endif + int rel, i; switch (pkt_type) { case HCI_ACLDATA_PKT: @@ -240,9 +271,9 @@ static struct sk_buff *bcsp_prepare_pkt(struct bcsp_struct *bcsp, u8 *data, BT_DBG("Sending packet with seqno %u", bcsp->msgq_txseq); bcsp->msgq_txseq = ++(bcsp->msgq_txseq) & 0x07; } -#ifdef CONFIG_BT_HCIUART_BCSP_TXCRC - hdr[0] |= 0x40; -#endif + + if (bcsp->use_crc) + hdr[0] |= 0x40; hdr[1] = ((len << 4) & 0xff) | chan; hdr[2] = len >> 4; @@ -251,25 +282,25 @@ static struct sk_buff *bcsp_prepare_pkt(struct bcsp_struct *bcsp, u8 *data, /* Put BCSP header */ for (i = 0; i < 4; i++) { bcsp_slip_one_byte(nskb, hdr[i]); -#ifdef CONFIG_BT_HCIUART_BCSP_TXCRC - bcsp_crc_update(&bcsp_txmsg_crc, hdr[i]); -#endif + + if (bcsp->use_crc) + bcsp_crc_update(&bcsp_txmsg_crc, hdr[i]); } /* Put payload */ for (i = 0; i < len; i++) { bcsp_slip_one_byte(nskb, data[i]); -#ifdef CONFIG_BT_HCIUART_BCSP_TXCRC - bcsp_crc_update(&bcsp_txmsg_crc, data[i]); -#endif + + if (bcsp->use_crc) + bcsp_crc_update(&bcsp_txmsg_crc, data[i]); } -#ifdef CONFIG_BT_HCIUART_BCSP_TXCRC /* Put CRC */ - bcsp_txmsg_crc = bcsp_crc_reverse(bcsp_txmsg_crc); - bcsp_slip_one_byte(nskb, (u8) ((bcsp_txmsg_crc >> 8) & 0x00ff)); - bcsp_slip_one_byte(nskb, (u8) (bcsp_txmsg_crc & 0x00ff)); -#endif + if (bcsp->use_crc) { + bcsp_txmsg_crc = bcsp_crc_reverse(bcsp_txmsg_crc); + bcsp_slip_one_byte(nskb, (u8) ((bcsp_txmsg_crc >> 8) & 0x00ff)); + bcsp_slip_one_byte(nskb, (u8) (bcsp_txmsg_crc & 0x00ff)); + } bcsp_slip_msgdelim(nskb); return nskb; @@ -317,7 +348,6 @@ static struct sk_buff *bcsp_dequeue(struct hci_uart *hu) spin_unlock_irqrestore(&bcsp->unack.lock, flags); - /* We could not send a reliable packet, either because there are none or because there are too many unack'ed pkts. Did we receive any packets we have not acknowledged yet ? */ @@ -363,7 +393,7 @@ static void bcsp_pkt_cull(struct bcsp_struct *bcsp) BT_ERR("Peer acked invalid packet"); BT_DBG("Removing %u pkts out of %u, up to seqno %u", - pkts_to_be_removed, bcsp->unack.qlen, (seqno - 1) & 0x07); + pkts_to_be_removed, bcsp->unack.qlen, (seqno - 1) & 0x07); for (i = 0, skb = ((struct sk_buff *) &bcsp->unack)->next; i < pkts_to_be_removed && skb != (struct sk_buff *) &bcsp->unack; i++) { @@ -374,8 +404,10 @@ static void bcsp_pkt_cull(struct bcsp_struct *bcsp) kfree_skb(skb); skb = nskb; } + if (bcsp->unack.qlen == 0) del_timer(&bcsp->tbcsp); + spin_unlock_irqrestore(&bcsp->unack.lock, flags); if (i != pkts_to_be_removed) @@ -530,6 +562,7 @@ static inline void bcsp_complete_rx_pkt(struct hci_uart *hu) hci_recv_frame(bcsp->rx_skb); } + bcsp->rx_state = BCSP_W4_PKT_DELIMITER; bcsp->rx_skb = NULL; } @@ -598,8 +631,8 @@ static int bcsp_recv(struct hci_uart *hu, void *data, int count) BT_ERR ("Checksum failed: computed %04x received %04x", bcsp_crc_reverse(bcsp->message_crc), - (bcsp->rx_skb-> data[bcsp->rx_skb->len - 2] << 8) + - bcsp->rx_skb->data[bcsp->rx_skb->len - 1]); + (bcsp->rx_skb-> data[bcsp->rx_skb->len - 2] << 8) + + bcsp->rx_skb->data[bcsp->rx_skb->len - 1]); kfree_skb(bcsp->rx_skb); bcsp->rx_state = BCSP_W4_PKT_DELIMITER; @@ -633,7 +666,7 @@ static int bcsp_recv(struct hci_uart *hu, void *data, int count) bcsp->rx_count = 4; bcsp->rx_esc_state = BCSP_ESCSTATE_NOESC; BCSP_CRC_INIT(bcsp->message_crc); - + /* Do not increment ptr or decrement count * Allocate packet. Max len of a BCSP pkt= * 0xFFF (payload) +4 (header) +2 (crc) */ @@ -698,6 +731,9 @@ static int bcsp_open(struct hci_uart *hu) bcsp->rx_state = BCSP_W4_PKT_DELIMITER; + if (txcrc) + bcsp->use_crc = 1; + return 0; } @@ -718,18 +754,19 @@ static int bcsp_close(struct hci_uart *hu) } static struct hci_uart_proto bcsp = { - .id = HCI_UART_BCSP, - .open = bcsp_open, - .close = bcsp_close, - .enqueue = bcsp_enqueue, - .dequeue = bcsp_dequeue, - .recv = bcsp_recv, - .flush = bcsp_flush + .id = HCI_UART_BCSP, + .open = bcsp_open, + .close = bcsp_close, + .enqueue = bcsp_enqueue, + .dequeue = bcsp_dequeue, + .recv = bcsp_recv, + .flush = bcsp_flush }; int bcsp_init(void) { int err = hci_uart_register_proto(&bcsp); + if (!err) BT_INFO("HCI BCSP protocol initialized"); else @@ -743,5 +780,8 @@ int bcsp_deinit(void) return hci_uart_unregister_proto(&bcsp); } +module_param(txcrc, bool, 0644); +MODULE_PARM_DESC(txcrc, "Transmit CRC with every BCSP packet"); + module_param(hciextn, bool, 0644); MODULE_PARM_DESC(hciextn, "Convert HCI Extensions into BCSP packets"); diff --git a/drivers/bluetooth/hci_bcsp.h b/drivers/bluetooth/hci_bcsp.h deleted file mode 100644 index a2b3bb92274b..000000000000 --- a/drivers/bluetooth/hci_bcsp.h +++ /dev/null @@ -1,70 +0,0 @@ -/* - BlueCore Serial Protocol (BCSP) for Linux Bluetooth stack (BlueZ). - Copyright 2002 by Fabrizio Gennari <fabrizio.gennari@philips.com> - - Based on - hci_h4.c by Maxim Krasnyansky <maxk@qualcomm.com> - ABCSP by Carl Orsborn <cjo@csr.com> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License version 2 as - published by the Free Software Foundation; - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. - IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY - CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES - WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - - ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, - COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS - SOFTWARE IS DISCLAIMED. -*/ - -/* - * $Id: hci_bcsp.h,v 1.2 2002/09/26 05:05:14 maxk Exp $ - */ - -#ifndef __HCI_BCSP_H__ -#define __HCI_BCSP_H__ - -#define BCSP_TXWINSIZE 4 - -#define BCSP_ACK_PKT 0x05 -#define BCSP_LE_PKT 0x06 - -struct bcsp_struct { - struct sk_buff_head unack; /* Unack'ed packets queue */ - struct sk_buff_head rel; /* Reliable packets queue */ - struct sk_buff_head unrel; /* Unreliable packets queue */ - - unsigned long rx_count; - struct sk_buff *rx_skb; - u8 rxseq_txack; /* rxseq == txack. */ - u8 rxack; /* Last packet sent by us that the peer ack'ed */ - struct timer_list tbcsp; - - enum { - BCSP_W4_PKT_DELIMITER, - BCSP_W4_PKT_START, - BCSP_W4_BCSP_HDR, - BCSP_W4_DATA, - BCSP_W4_CRC - } rx_state; - - enum { - BCSP_ESCSTATE_NOESC, - BCSP_ESCSTATE_ESC - } rx_esc_state; - - u16 message_crc; - u8 txack_req; /* Do we need to send ack's to the peer? */ - - /* Reliable packet sequence number - used to assign seq to each rel pkt. */ - u8 msgq_txseq; -}; - -#endif /* __HCI_BCSP_H__ */ diff --git a/drivers/bluetooth/hci_h4.c b/drivers/bluetooth/hci_h4.c index cf8a22d58d96..12e369a66fc2 100644 --- a/drivers/bluetooth/hci_h4.c +++ b/drivers/bluetooth/hci_h4.c @@ -1,33 +1,27 @@ -/* - BlueZ - Bluetooth protocol stack for Linux - Copyright (C) 2000-2001 Qualcomm Incorporated - - Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License version 2 as - published by the Free Software Foundation; - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. - IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY - CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES - WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - - ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, - COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS - SOFTWARE IS DISCLAIMED. -*/ - /* - * Bluetooth HCI UART(H4) protocol. * - * $Id: hci_h4.c,v 1.3 2002/09/09 01:17:32 maxk Exp $ + * Bluetooth HCI UART driver + * + * Copyright (C) 2000-2001 Qualcomm Incorporated + * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> + * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * */ -#define VERSION "1.2" #include <linux/config.h> #include <linux/module.h> @@ -51,24 +45,41 @@ #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> + #include "hci_uart.h" -#include "hci_h4.h" #ifndef CONFIG_BT_HCIUART_DEBUG #undef BT_DBG #define BT_DBG( A... ) #endif +#define VERSION "1.2" + +struct h4_struct { + unsigned long rx_state; + unsigned long rx_count; + struct sk_buff *rx_skb; + struct sk_buff_head txq; +}; + +/* H4 receiver States */ +#define H4_W4_PACKET_TYPE 0 +#define H4_W4_EVENT_HDR 1 +#define H4_W4_ACL_HDR 2 +#define H4_W4_SCO_HDR 3 +#define H4_W4_DATA 4 + /* Initialize protocol */ static int h4_open(struct hci_uart *hu) { struct h4_struct *h4; - + BT_DBG("hu %p", hu); - + h4 = kmalloc(sizeof(*h4), GFP_ATOMIC); if (!h4) return -ENOMEM; + memset(h4, 0, sizeof(*h4)); skb_queue_head_init(&h4->txq); @@ -83,7 +94,9 @@ static int h4_flush(struct hci_uart *hu) struct h4_struct *h4 = hu->priv; BT_DBG("hu %p", hu); + skb_queue_purge(&h4->txq); + return 0; } @@ -91,16 +104,19 @@ static int h4_flush(struct hci_uart *hu) static int h4_close(struct hci_uart *hu) { struct h4_struct *h4 = hu->priv; + hu->priv = NULL; BT_DBG("hu %p", hu); skb_queue_purge(&h4->txq); + if (h4->rx_skb) kfree_skb(h4->rx_skb); hu->priv = NULL; kfree(h4); + return 0; } @@ -114,6 +130,7 @@ static int h4_enqueue(struct hci_uart *hu, struct sk_buff *skb) /* Prepend skb with frame type */ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); skb_queue_tail(&h4->txq, skb); + return 0; } @@ -122,6 +139,7 @@ static inline int h4_check_data_len(struct h4_struct *h4, int len) register int room = skb_tailroom(h4->rx_skb); BT_DBG("len %d room %d", len, room); + if (!len) { hci_recv_frame(h4->rx_skb); } else if (len > room) { @@ -136,6 +154,7 @@ static inline int h4_check_data_len(struct h4_struct *h4, int len) h4->rx_state = H4_W4_PACKET_TYPE; h4->rx_skb = NULL; h4->rx_count = 0; + return 0; } @@ -228,6 +247,7 @@ static int h4_recv(struct hci_uart *hu, void *data, int count) ptr++; count--; continue; }; + ptr++; count--; /* Allocate packet */ @@ -238,9 +258,11 @@ static int h4_recv(struct hci_uart *hu, void *data, int count) h4->rx_count = 0; return 0; } + h4->rx_skb->dev = (void *) hu->hdev; bt_cb(h4->rx_skb)->pkt_type = type; } + return count; } @@ -251,23 +273,24 @@ static struct sk_buff *h4_dequeue(struct hci_uart *hu) } static struct hci_uart_proto h4p = { - .id = HCI_UART_H4, - .open = h4_open, - .close = h4_close, - .recv = h4_recv, - .enqueue = h4_enqueue, - .dequeue = h4_dequeue, - .flush = h4_flush, + .id = HCI_UART_H4, + .open = h4_open, + .close = h4_close, + .recv = h4_recv, + .enqueue = h4_enqueue, + .dequeue = h4_dequeue, + .flush = h4_flush, }; - + int h4_init(void) { int err = hci_uart_register_proto(&h4p); + if (!err) BT_INFO("HCI H4 protocol initialized"); else BT_ERR("HCI H4 protocol registration failed"); - + return err; } diff --git a/drivers/bluetooth/hci_h4.h b/drivers/bluetooth/hci_h4.h deleted file mode 100644 index b95ff54bfd47..000000000000 --- a/drivers/bluetooth/hci_h4.h +++ /dev/null @@ -1,44 +0,0 @@ -/* - BlueZ - Bluetooth protocol stack for Linux - Copyright (C) 2000-2001 Qualcomm Incorporated - - Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License version 2 as - published by the Free Software Foundation; - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. - IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY - CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES - WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - - ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, - COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS - SOFTWARE IS DISCLAIMED. -*/ - -/* - * $Id: hci_h4.h,v 1.2 2002/09/09 01:17:32 maxk Exp $ - */ - -#ifdef __KERNEL__ -struct h4_struct { - unsigned long rx_state; - unsigned long rx_count; - struct sk_buff *rx_skb; - struct sk_buff_head txq; -}; - -/* H4 receiver States */ -#define H4_W4_PACKET_TYPE 0 -#define H4_W4_EVENT_HDR 1 -#define H4_W4_ACL_HDR 2 -#define H4_W4_SCO_HDR 3 -#define H4_W4_DATA 4 - -#endif /* __KERNEL__ */ diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index aed80cc22890..4a775f6ea390 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -1,33 +1,27 @@ -/* - BlueZ - Bluetooth protocol stack for Linux - Copyright (C) 2000-2001 Qualcomm Incorporated - - Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License version 2 as - published by the Free Software Foundation; - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. - IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY - CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES - WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - - ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, - COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS - SOFTWARE IS DISCLAIMED. -*/ - /* - * Bluetooth HCI UART driver. * - * $Id: hci_ldisc.c,v 1.5 2002/10/02 18:37:20 maxk Exp $ + * Bluetooth HCI UART driver + * + * Copyright (C) 2000-2001 Qualcomm Incorporated + * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> + * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * */ -#define VERSION "2.1" #include <linux/config.h> #include <linux/module.h> @@ -59,6 +53,8 @@ #define BT_DBG( A... ) #endif +#define VERSION "2.2" + static int reset = 0; static struct hci_uart_proto *hup[HCI_UART_MAX_PROTO]; @@ -72,6 +68,7 @@ int hci_uart_register_proto(struct hci_uart_proto *p) return -EEXIST; hup[p->id] = p; + return 0; } @@ -84,6 +81,7 @@ int hci_uart_unregister_proto(struct hci_uart_proto *p) return -EINVAL; hup[p->id] = NULL; + return 0; } @@ -91,13 +89,14 @@ static struct hci_uart_proto *hci_uart_get_proto(unsigned int id) { if (id >= HCI_UART_MAX_PROTO) return NULL; + return hup[id]; } static inline void hci_uart_tx_complete(struct hci_uart *hu, int pkt_type) { struct hci_dev *hdev = hu->hdev; - + /* Update HCI stat counters */ switch (pkt_type) { case HCI_COMMAND_PKT: @@ -117,10 +116,12 @@ static inline void hci_uart_tx_complete(struct hci_uart *hu, int pkt_type) static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu) { struct sk_buff *skb = hu->tx_skb; + if (!skb) skb = hu->proto->dequeue(hu); else hu->tx_skb = NULL; + return skb; } @@ -129,7 +130,7 @@ int hci_uart_tx_wakeup(struct hci_uart *hu) struct tty_struct *tty = hu->tty; struct hci_dev *hdev = hu->hdev; struct sk_buff *skb; - + if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) { set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); return 0; @@ -142,7 +143,7 @@ restart: while ((skb = hci_uart_dequeue(hu))) { int len; - + set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); len = tty->driver->write(tty, skb->data, skb->len); hdev->stat.byte_tx += len; @@ -152,11 +153,11 @@ restart: hu->tx_skb = skb; break; } - + hci_uart_tx_complete(hu, bt_cb(skb)->pkt_type); kfree_skb(skb); - } - + } + if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state)) goto restart; @@ -173,6 +174,7 @@ static int hci_uart_open(struct hci_dev *hdev) /* Nothing to do for UART driver */ set_bit(HCI_RUNNING, &hdev->flags); + return 0; } @@ -234,6 +236,7 @@ static int hci_uart_send_frame(struct sk_buff *skb) hu->proto->enqueue(hu, skb); hci_uart_tx_wakeup(hu); + return 0; } @@ -241,7 +244,8 @@ static void hci_uart_destruct(struct hci_dev *hdev) { struct hci_uart *hu; - if (!hdev) return; + if (!hdev) + return; BT_DBG("%s", hdev->name); @@ -272,6 +276,7 @@ static int hci_uart_tty_open(struct tty_struct *tty) BT_ERR("Can't allocate controll structure"); return -ENFILE; } + memset(hu, 0, sizeof(struct hci_uart)); tty->disc_data = hu; @@ -280,8 +285,10 @@ static int hci_uart_tty_open(struct tty_struct *tty) spin_lock_init(&hu->rx_lock); /* Flush any pending characters in the driver and line discipline. */ + /* FIXME: why is this needed. Note don't use ldisc_ref here as the open path is before the ldisc is referencable */ + if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty); @@ -372,13 +379,13 @@ static int hci_uart_tty_room (struct tty_struct *tty) static void hci_uart_tty_receive(struct tty_struct *tty, const __u8 *data, char *flags, int count) { struct hci_uart *hu = (void *)tty->disc_data; - + if (!hu || tty != hu->tty) return; if (!test_bit(HCI_UART_PROTO_SET, &hu->flags)) return; - + spin_lock(&hu->rx_lock); hu->proto->recv(hu, (void *) data, count); hu->hdev->stat.byte_rx += count; @@ -429,8 +436,8 @@ static int hci_uart_register_dev(struct hci_uart *hu) static int hci_uart_set_proto(struct hci_uart *hu, int id) { struct hci_uart_proto *p; - int err; - + int err; + p = hci_uart_get_proto(id); if (!p) return -EPROTONOSUPPORT; @@ -446,6 +453,7 @@ static int hci_uart_set_proto(struct hci_uart *hu, int id) p->close(hu); return err; } + return 0; } @@ -463,7 +471,7 @@ static int hci_uart_set_proto(struct hci_uart *hu, int id) * Return Value: Command dependent */ static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, - unsigned int cmd, unsigned long arg) + unsigned int cmd, unsigned long arg) { struct hci_uart *hu = (void *)tty->disc_data; int err = 0; @@ -483,14 +491,14 @@ static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, return err; } tty->low_latency = 1; - } else + } else return -EBUSY; case HCIUARTGETPROTO: if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) return hu->proto->id; return -EUNATCH; - + default: err = n_tty_ioctl(tty, file, cmd, arg); break; @@ -502,28 +510,24 @@ static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, /* * We don't provide read/write/poll interface for user space. */ -static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file, unsigned char __user *buf, size_t nr) +static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file, + unsigned char __user *buf, size_t nr) { return 0; } -static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file, const unsigned char *data, size_t count) + +static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file, + const unsigned char *data, size_t count) { return 0; } -static unsigned int hci_uart_tty_poll(struct tty_struct *tty, struct file *filp, poll_table *wait) + +static unsigned int hci_uart_tty_poll(struct tty_struct *tty, + struct file *filp, poll_table *wait) { return 0; } -#ifdef CONFIG_BT_HCIUART_H4 -int h4_init(void); -int h4_deinit(void); -#endif -#ifdef CONFIG_BT_HCIUART_BCSP -int bcsp_init(void); -int bcsp_deinit(void); -#endif - static int __init hci_uart_init(void) { static struct tty_ldisc hci_uart_ldisc; @@ -534,18 +538,18 @@ static int __init hci_uart_init(void) /* Register the tty discipline */ memset(&hci_uart_ldisc, 0, sizeof (hci_uart_ldisc)); - hci_uart_ldisc.magic = TTY_LDISC_MAGIC; - hci_uart_ldisc.name = "n_hci"; - hci_uart_ldisc.open = hci_uart_tty_open; - hci_uart_ldisc.close = hci_uart_tty_close; - hci_uart_ldisc.read = hci_uart_tty_read; - hci_uart_ldisc.write = hci_uart_tty_write; - hci_uart_ldisc.ioctl = hci_uart_tty_ioctl; - hci_uart_ldisc.poll = hci_uart_tty_poll; - hci_uart_ldisc.receive_room= hci_uart_tty_room; - hci_uart_ldisc.receive_buf = hci_uart_tty_receive; - hci_uart_ldisc.write_wakeup= hci_uart_tty_wakeup; - hci_uart_ldisc.owner = THIS_MODULE; + hci_uart_ldisc.magic = TTY_LDISC_MAGIC; + hci_uart_ldisc.name = "n_hci"; + hci_uart_ldisc.open = hci_uart_tty_open; + hci_uart_ldisc.close = hci_uart_tty_close; + hci_uart_ldisc.read = hci_uart_tty_read; + hci_uart_ldisc.write = hci_uart_tty_write; + hci_uart_ldisc.ioctl = hci_uart_tty_ioctl; + hci_uart_ldisc.poll = hci_uart_tty_poll; + hci_uart_ldisc.receive_room = hci_uart_tty_room; + hci_uart_ldisc.receive_buf = hci_uart_tty_receive; + hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup; + hci_uart_ldisc.owner = THIS_MODULE; if ((err = tty_register_ldisc(N_HCI, &hci_uart_ldisc))) { BT_ERR("HCI line discipline registration failed. (%d)", err); diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h index 0a57d72790ec..b250e6789dee 100644 --- a/drivers/bluetooth/hci_uart.h +++ b/drivers/bluetooth/hci_uart.h @@ -1,32 +1,29 @@ -/* - BlueZ - Bluetooth protocol stack for Linux - Copyright (C) 2000-2001 Qualcomm Incorporated - - Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License version 2 as - published by the Free Software Foundation; - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. - IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY - CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES - WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - - ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, - COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS - SOFTWARE IS DISCLAIMED. -*/ - /* - * $Id: hci_uart.h,v 1.2 2002/09/09 01:17:32 maxk Exp $ + * + * Bluetooth HCI UART driver + * + * Copyright (C) 2000-2001 Qualcomm Incorporated + * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> + * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * */ -#ifndef N_HCI +#ifndef N_HCI #define N_HCI 15 #endif @@ -42,7 +39,6 @@ #define HCI_UART_3WIRE 2 #define HCI_UART_H4DS 3 -#ifdef __KERNEL__ struct hci_uart; struct hci_uart_proto { @@ -56,27 +52,35 @@ struct hci_uart_proto { }; struct hci_uart { - struct tty_struct *tty; - struct hci_dev *hdev; - unsigned long flags; + struct tty_struct *tty; + struct hci_dev *hdev; + unsigned long flags; - struct hci_uart_proto *proto; - void *priv; - - struct sk_buff *tx_skb; - unsigned long tx_state; - spinlock_t rx_lock; + struct hci_uart_proto *proto; + void *priv; + + struct sk_buff *tx_skb; + unsigned long tx_state; + spinlock_t rx_lock; }; /* HCI_UART flag bits */ -#define HCI_UART_PROTO_SET 0 +#define HCI_UART_PROTO_SET 0 /* TX states */ -#define HCI_UART_SENDING 1 -#define HCI_UART_TX_WAKEUP 2 +#define HCI_UART_SENDING 1 +#define HCI_UART_TX_WAKEUP 2 int hci_uart_register_proto(struct hci_uart_proto *p); int hci_uart_unregister_proto(struct hci_uart_proto *p); int hci_uart_tx_wakeup(struct hci_uart *hu); -#endif /* __KERNEL__ */ +#ifdef CONFIG_BT_HCIUART_H4 +int h4_init(void); +int h4_deinit(void); +#endif + +#ifdef CONFIG_BT_HCIUART_BCSP +int bcsp_init(void); +int bcsp_deinit(void); +#endif diff --git a/drivers/char/dsp56k.c b/drivers/char/dsp56k.c index 26271e3ca823..8693835cb2d5 100644 --- a/drivers/char/dsp56k.c +++ b/drivers/char/dsp56k.c @@ -515,7 +515,7 @@ static int __init dsp56k_init_driver(void) err = PTR_ERR(dsp56k_class); goto out_chrdev; } - class_device_create(dsp56k_class, MKDEV(DSP56K_MAJOR, 0), NULL, "dsp56k"); + class_device_create(dsp56k_class, NULL, MKDEV(DSP56K_MAJOR, 0), NULL, "dsp56k"); err = devfs_mk_cdev(MKDEV(DSP56K_MAJOR, 0), S_IFCHR | S_IRUSR | S_IWUSR, "dsp56k"); diff --git a/drivers/char/ftape/zftape/zftape-init.c b/drivers/char/ftape/zftape/zftape-init.c index 5745b74044ec..821357ce7e0e 100644 --- a/drivers/char/ftape/zftape/zftape-init.c +++ b/drivers/char/ftape/zftape/zftape-init.c @@ -331,27 +331,27 @@ KERN_INFO zft_class = class_create(THIS_MODULE, "zft"); for (i = 0; i < 4; i++) { - class_device_create(zft_class, MKDEV(QIC117_TAPE_MAJOR, i), NULL, "qft%i", i); + class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i), NULL, "qft%i", i); devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i), S_IFCHR | S_IRUSR | S_IWUSR, "qft%i", i); - class_device_create(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 4), NULL, "nqft%i", i); + class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 4), NULL, "nqft%i", i); devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i + 4), S_IFCHR | S_IRUSR | S_IWUSR, "nqft%i", i); - class_device_create(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 16), NULL, "zqft%i", i); + class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 16), NULL, "zqft%i", i); devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i + 16), S_IFCHR | S_IRUSR | S_IWUSR, "zqft%i", i); - class_device_create(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 20), NULL, "nzqft%i", i); + class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 20), NULL, "nzqft%i", i); devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i + 20), S_IFCHR | S_IRUSR | S_IWUSR, "nzqft%i", i); - class_device_create(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 32), NULL, "rawqft%i", i); + class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 32), NULL, "rawqft%i", i); devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i + 32), S_IFCHR | S_IRUSR | S_IWUSR, "rawqft%i", i); - class_device_create(zft_class, MKDEV(QIC117_TAPE_MAJOR, i + 36), NULL, "nrawrawqft%i", i); + class_device_create(zft_class, NULL, MKDEV(QIC117_TAPE_MAJOR, i + 36), NULL, "nrawrawqft%i", i); devfs_mk_cdev(MKDEV(QIC117_TAPE_MAJOR, i + 36), S_IFCHR | S_IRUSR | S_IWUSR, "nrawqft%i", i); diff --git a/drivers/char/ip2main.c b/drivers/char/ip2main.c index 9e4e26aef94e..d815d197dc3e 100644 --- a/drivers/char/ip2main.c +++ b/drivers/char/ip2main.c @@ -721,8 +721,9 @@ ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) } if ( NULL != ( pB = i2BoardPtrTable[i] ) ) { - class_device_create(ip2_class, MKDEV(IP2_IPL_MAJOR, - 4 * i), NULL, "ipl%d", i); + class_device_create(ip2_class, NULL, + MKDEV(IP2_IPL_MAJOR, 4 * i), + NULL, "ipl%d", i); err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i), S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR, "ip2/ipl%d", i); @@ -732,8 +733,9 @@ ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) goto out_class; } - class_device_create(ip2_class, MKDEV(IP2_IPL_MAJOR, - 4 * i + 1), NULL, "stat%d", i); + class_device_create(ip2_class, NULL, + MKDEV(IP2_IPL_MAJOR, 4 * i + 1), + NULL, "stat%d", i); err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i + 1), S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR, "ip2/stat%d", i); diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c index a09ff1080687..7c0684deea06 100644 --- a/drivers/char/ipmi/ipmi_devintf.c +++ b/drivers/char/ipmi/ipmi_devintf.c @@ -798,7 +798,7 @@ static void ipmi_new_smi(int if_num) devfs_mk_cdev(dev, S_IFCHR | S_IRUSR | S_IWUSR, "ipmidev/%d", if_num); - class_device_create(ipmi_class, dev, NULL, "ipmi%d", if_num); + class_device_create(ipmi_class, NULL, dev, NULL, "ipmi%d", if_num); } static void ipmi_smi_gone(int if_num) diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c index 9c19e5435a11..e3ddbdb85a2f 100644 --- a/drivers/char/istallion.c +++ b/drivers/char/istallion.c @@ -5246,7 +5246,8 @@ int __init stli_init(void) devfs_mk_cdev(MKDEV(STL_SIOMEMMAJOR, i), S_IFCHR | S_IRUSR | S_IWUSR, "staliomem/%d", i); - class_device_create(istallion_class, MKDEV(STL_SIOMEMMAJOR, i), + class_device_create(istallion_class, NULL, + MKDEV(STL_SIOMEMMAJOR, i), NULL, "staliomem%d", i); } diff --git a/drivers/char/lp.c b/drivers/char/lp.c index 2afb9038dbc5..e57260525293 100644 --- a/drivers/char/lp.c +++ b/drivers/char/lp.c @@ -805,7 +805,7 @@ static int lp_register(int nr, struct parport *port) if (reset) lp_reset(nr); - class_device_create(lp_class, MKDEV(LP_MAJOR, nr), NULL, + class_device_create(lp_class, NULL, MKDEV(LP_MAJOR, nr), NULL, "lp%d", nr); devfs_mk_cdev(MKDEV(LP_MAJOR, nr), S_IFCHR | S_IRUGO | S_IWUGO, "printers/%d", nr); diff --git a/drivers/char/mem.c b/drivers/char/mem.c index f182752fe918..38be4b0dbd1c 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -920,7 +920,8 @@ static int __init chr_dev_init(void) mem_class = class_create(THIS_MODULE, "mem"); for (i = 0; i < ARRAY_SIZE(devlist); i++) { - class_device_create(mem_class, MKDEV(MEM_MAJOR, devlist[i].minor), + class_device_create(mem_class, NULL, + MKDEV(MEM_MAJOR, devlist[i].minor), NULL, devlist[i].name); devfs_mk_cdev(MKDEV(MEM_MAJOR, devlist[i].minor), S_IFCHR | devlist[i].mode, devlist[i].name); diff --git a/drivers/char/misc.c b/drivers/char/misc.c index 0c8375165e29..3e4c0414a01a 100644 --- a/drivers/char/misc.c +++ b/drivers/char/misc.c @@ -234,7 +234,7 @@ int misc_register(struct miscdevice * misc) } dev = MKDEV(MISC_MAJOR, misc->minor); - misc->class = class_device_create(misc_class, dev, misc->dev, + misc->class = class_device_create(misc_class, NULL, dev, misc->dev, "%s", misc->name); if (IS_ERR(misc->class)) { err = PTR_ERR(misc->class); diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c index c9bdf544ed2c..c556f4d3ccd7 100644 --- a/drivers/char/n_tty.c +++ b/drivers/char/n_tty.c @@ -62,7 +62,7 @@ static inline unsigned char *alloc_buf(void) { - unsigned int prio = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL; + gfp_t prio = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL; if (PAGE_SIZE != N_TTY_BUF_SIZE) return kmalloc(N_TTY_BUF_SIZE, prio); diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c index 1af733d07321..9e24bbd4090c 100644 --- a/drivers/char/nvram.c +++ b/drivers/char/nvram.c @@ -32,9 +32,11 @@ * added changelog * 1.2 Erik Gilling: Cobalt Networks support * Tim Hockin: general cleanup, Cobalt support + * 1.3 Jon Ringle: Comdial MP1000 support + * */ -#define NVRAM_VERSION "1.2" +#define NVRAM_VERSION "1.3" #include <linux/module.h> #include <linux/config.h> @@ -45,6 +47,7 @@ #define PC 1 #define ATARI 2 #define COBALT 3 +#define MP1000 4 /* select machine configuration */ #if defined(CONFIG_ATARI) @@ -54,6 +57,9 @@ # if defined(CONFIG_COBALT) # include <linux/cobalt-nvram.h> # define MACH COBALT +# elif defined(CONFIG_MACH_MP1000) +# undef MACH +# define MACH MP1000 # else # define MACH PC # endif @@ -112,6 +118,23 @@ #endif +#if MACH == MP1000 + +/* RTC in a MP1000 */ +#define CHECK_DRIVER_INIT() 1 + +#define MP1000_CKS_RANGE_START 0 +#define MP1000_CKS_RANGE_END 111 +#define MP1000_CKS_LOC 112 + +#define NVRAM_BYTES (128-NVRAM_FIRST_BYTE) + +#define mach_check_checksum mp1000_check_checksum +#define mach_set_checksum mp1000_set_checksum +#define mach_proc_infos mp1000_proc_infos + +#endif + /* Note that *all* calls to CMOS_READ and CMOS_WRITE must be done with * rtc_lock held. Due to the index-port/data-port design of the RTC, we * don't want two different things trying to get to it at once. (e.g. the @@ -915,6 +938,91 @@ atari_proc_infos(unsigned char *nvram, char *buffer, int *len, #endif /* MACH == ATARI */ +#if MACH == MP1000 + +static int +mp1000_check_checksum(void) +{ + int i; + unsigned short sum = 0; + unsigned short expect; + + for (i = MP1000_CKS_RANGE_START; i <= MP1000_CKS_RANGE_END; ++i) + sum += __nvram_read_byte(i); + + expect = __nvram_read_byte(MP1000_CKS_LOC+1)<<8 | + __nvram_read_byte(MP1000_CKS_LOC); + return ((sum & 0xffff) == expect); +} + +static void +mp1000_set_checksum(void) +{ + int i; + unsigned short sum = 0; + + for (i = MP1000_CKS_RANGE_START; i <= MP1000_CKS_RANGE_END; ++i) + sum += __nvram_read_byte(i); + __nvram_write_byte(sum >> 8, MP1000_CKS_LOC + 1); + __nvram_write_byte(sum & 0xff, MP1000_CKS_LOC); +} + +#ifdef CONFIG_PROC_FS + +#define SERVER_N_LEN 32 +#define PATH_N_LEN 32 +#define FILE_N_LEN 32 +#define NVRAM_MAGIC_SIG 0xdead + +typedef struct NvRamImage +{ + unsigned short int magic; + unsigned short int mode; + char fname[FILE_N_LEN]; + char path[PATH_N_LEN]; + char server[SERVER_N_LEN]; + char pad[12]; +} NvRam; + +static int +mp1000_proc_infos(unsigned char *nvram, char *buffer, int *len, + off_t *begin, off_t offset, int size) +{ + int checksum; + NvRam* nv = (NvRam*)nvram; + + spin_lock_irq(&rtc_lock); + checksum = __nvram_check_checksum(); + spin_unlock_irq(&rtc_lock); + + PRINT_PROC("Checksum status: %svalid\n", checksum ? "" : "not "); + + switch( nv->mode ) + { + case 0 : + PRINT_PROC( "\tMode 0, tftp prompt\n" ); + break; + case 1 : + PRINT_PROC( "\tMode 1, booting from disk\n" ); + break; + case 2 : + PRINT_PROC( "\tMode 2, Alternate boot from disk /boot/%s\n", nv->fname ); + break; + case 3 : + PRINT_PROC( "\tMode 3, Booting from net:\n" ); + PRINT_PROC( "\t\t%s:%s%s\n",nv->server, nv->path, nv->fname ); + break; + default: + PRINT_PROC( "\tInconsistant nvram?\n" ); + break; + } + + return 1; +} +#endif + +#endif /* MACH == MP1000 */ + MODULE_LICENSE("GPL"); EXPORT_SYMBOL(__nvram_read_byte); diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c index 0e22880432bc..306ee0f091a4 100644 --- a/drivers/char/ppdev.c +++ b/drivers/char/ppdev.c @@ -752,7 +752,7 @@ static struct file_operations pp_fops = { static void pp_attach(struct parport *port) { - class_device_create(ppdev_class, MKDEV(PP_MAJOR, port->number), + class_device_create(ppdev_class, NULL, MKDEV(PP_MAJOR, port->number), NULL, "parport%d", port->number); } diff --git a/drivers/char/raw.c b/drivers/char/raw.c index f13e5de02207..30e4cbe16bb0 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -128,7 +128,7 @@ raw_ioctl(struct inode *inode, struct file *filp, static void bind_device(struct raw_config_request *rq) { class_device_destroy(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor)); - class_device_create(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor), + class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, rq->raw_minor), NULL, "raw%d", rq->raw_minor); } @@ -307,7 +307,7 @@ static int __init raw_init(void) unregister_chrdev_region(dev, MAX_RAW_MINORS); goto error; } - class_device_create(raw_class, MKDEV(RAW_MAJOR, 0), NULL, "rawctl"); + class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl"); devfs_mk_cdev(MKDEV(RAW_MAJOR, 0), S_IFCHR | S_IRUGO | S_IWUGO, diff --git a/drivers/char/s3c2410-rtc.c b/drivers/char/s3c2410-rtc.c index e1a90d9a8756..887b8b2d7882 100644 --- a/drivers/char/s3c2410-rtc.c +++ b/drivers/char/s3c2410-rtc.c @@ -519,30 +519,28 @@ static struct timespec s3c2410_rtc_delta; static int ticnt_save; -static int s3c2410_rtc_suspend(struct device *dev, pm_message_t state, u32 level) +static int s3c2410_rtc_suspend(struct device *dev, pm_message_t state) { struct rtc_time tm; struct timespec time; time.tv_nsec = 0; - if (level == SUSPEND_POWER_DOWN) { - /* save TICNT for anyone using periodic interrupts */ + /* save TICNT for anyone using periodic interrupts */ - ticnt_save = readb(S3C2410_TICNT); + ticnt_save = readb(S3C2410_TICNT); - /* calculate time delta for suspend */ + /* calculate time delta for suspend */ - s3c2410_rtc_gettime(&tm); - rtc_tm_to_time(&tm, &time.tv_sec); - save_time_delta(&s3c2410_rtc_delta, &time); - s3c2410_rtc_enable(dev, 0); - } + s3c2410_rtc_gettime(&tm); + rtc_tm_to_time(&tm, &time.tv_sec); + save_time_delta(&s3c2410_rtc_delta, &time); + s3c2410_rtc_enable(dev, 0); return 0; } -static int s3c2410_rtc_resume(struct device *dev, u32 level) +static int s3c2410_rtc_resume(struct device *dev) { struct rtc_time tm; struct timespec time; diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c index a025a89ea70a..0e7d216e7eb0 100644 --- a/drivers/char/snsc.c +++ b/drivers/char/snsc.c @@ -437,7 +437,7 @@ scdrv_init(void) continue; } - class_device_create(snsc_class, dev, NULL, + class_device_create(snsc_class, NULL, dev, NULL, "%s", devname); ia64_sn_irtr_intr_enable(scd->scd_nasid, diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c index 36ae9ad2598c..f86c15587238 100644 --- a/drivers/char/sonypi.c +++ b/drivers/char/sonypi.c @@ -424,10 +424,6 @@ static struct sonypi_eventtypes { #define SONYPI_BUF_SIZE 128 -/* The name of the devices for the input device drivers */ -#define SONYPI_JOG_INPUTNAME "Sony Vaio Jogdial" -#define SONYPI_KEY_INPUTNAME "Sony Vaio Keys" - /* Correspondance table between sonypi events and input layer events */ static struct { int sonypiev; @@ -490,8 +486,8 @@ static struct sonypi_device { struct fasync_struct *fifo_async; int open_count; int model; - struct input_dev input_jog_dev; - struct input_dev input_key_dev; + struct input_dev *input_jog_dev; + struct input_dev *input_key_dev; struct work_struct input_work; struct kfifo *input_fifo; spinlock_t input_fifo_lock; @@ -779,8 +775,8 @@ static void input_keyrelease(void *data) static void sonypi_report_input_event(u8 event) { - struct input_dev *jog_dev = &sonypi_device.input_jog_dev; - struct input_dev *key_dev = &sonypi_device.input_key_dev; + struct input_dev *jog_dev = sonypi_device.input_jog_dev; + struct input_dev *key_dev = sonypi_device.input_key_dev; struct sonypi_keypress kp = { NULL }; int i; @@ -1171,19 +1167,17 @@ static int sonypi_disable(void) #ifdef CONFIG_PM static int old_camera_power; -static int sonypi_suspend(struct device *dev, pm_message_t state, u32 level) +static int sonypi_suspend(struct device *dev, pm_message_t state) { - if (level == SUSPEND_DISABLE) { - old_camera_power = sonypi_device.camera_power; - sonypi_disable(); - } + old_camera_power = sonypi_device.camera_power; + sonypi_disable(); + return 0; } -static int sonypi_resume(struct device *dev, u32 level) +static int sonypi_resume(struct device *dev) { - if (level == RESUME_ENABLE) - sonypi_enable(old_camera_power); + sonypi_enable(old_camera_power); return 0; } #endif @@ -1203,6 +1197,47 @@ static struct device_driver sonypi_driver = { .shutdown = sonypi_shutdown, }; +static int __devinit sonypi_create_input_devices(void) +{ + struct input_dev *jog_dev; + struct input_dev *key_dev; + int i; + + sonypi_device.input_jog_dev = jog_dev = input_allocate_device(); + if (!jog_dev) + return -ENOMEM; + + jog_dev->name = "Sony Vaio Jogdial"; + jog_dev->id.bustype = BUS_ISA; + jog_dev->id.vendor = PCI_VENDOR_ID_SONY; + + jog_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); + jog_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_MIDDLE); + jog_dev->relbit[0] = BIT(REL_WHEEL); + + sonypi_device.input_key_dev = key_dev = input_allocate_device(); + if (!key_dev) { + input_free_device(jog_dev); + sonypi_device.input_jog_dev = NULL; + return -ENOMEM; + } + + key_dev->name = "Sony Vaio Keys"; + key_dev->id.bustype = BUS_ISA; + key_dev->id.vendor = PCI_VENDOR_ID_SONY; + + /* Initialize the Input Drivers: special keys */ + key_dev->evbit[0] = BIT(EV_KEY); + for (i = 0; sonypi_inputkeys[i].sonypiev; i++) + if (sonypi_inputkeys[i].inputev) + set_bit(sonypi_inputkeys[i].inputev, key_dev->keybit); + + input_register_device(jog_dev); + input_register_device(key_dev); + + return 0; +} + static int __devinit sonypi_probe(void) { int i, ret; @@ -1298,34 +1333,10 @@ static int __devinit sonypi_probe(void) } if (useinput) { - /* Initialize the Input Drivers: jogdial */ - int i; - sonypi_device.input_jog_dev.evbit[0] = - BIT(EV_KEY) | BIT(EV_REL); - sonypi_device.input_jog_dev.keybit[LONG(BTN_MOUSE)] = - BIT(BTN_MIDDLE); - sonypi_device.input_jog_dev.relbit[0] = BIT(REL_WHEEL); - sonypi_device.input_jog_dev.name = SONYPI_JOG_INPUTNAME; - sonypi_device.input_jog_dev.id.bustype = BUS_ISA; - sonypi_device.input_jog_dev.id.vendor = PCI_VENDOR_ID_SONY; - - input_register_device(&sonypi_device.input_jog_dev); - printk(KERN_INFO "%s input method installed.\n", - sonypi_device.input_jog_dev.name); - - /* Initialize the Input Drivers: special keys */ - sonypi_device.input_key_dev.evbit[0] = BIT(EV_KEY); - for (i = 0; sonypi_inputkeys[i].sonypiev; i++) - if (sonypi_inputkeys[i].inputev) - set_bit(sonypi_inputkeys[i].inputev, - sonypi_device.input_key_dev.keybit); - sonypi_device.input_key_dev.name = SONYPI_KEY_INPUTNAME; - sonypi_device.input_key_dev.id.bustype = BUS_ISA; - sonypi_device.input_key_dev.id.vendor = PCI_VENDOR_ID_SONY; - input_register_device(&sonypi_device.input_key_dev); - printk(KERN_INFO "%s input method installed.\n", - sonypi_device.input_key_dev.name); + ret = sonypi_create_input_devices(); + if (ret) + goto out_inputdevices; spin_lock_init(&sonypi_device.input_fifo_lock); sonypi_device.input_fifo = @@ -1375,8 +1386,9 @@ static int __devinit sonypi_probe(void) out_platformdev: kfifo_free(sonypi_device.input_fifo); out_infifo: - input_unregister_device(&sonypi_device.input_key_dev); - input_unregister_device(&sonypi_device.input_jog_dev); + input_unregister_device(sonypi_device.input_key_dev); + input_unregister_device(sonypi_device.input_jog_dev); +out_inputdevices: free_irq(sonypi_device.irq, sonypi_irq); out_reqirq: release_region(sonypi_device.ioport1, sonypi_device.region_size); @@ -1402,8 +1414,8 @@ static void __devexit sonypi_remove(void) platform_device_unregister(sonypi_device.pdev); if (useinput) { - input_unregister_device(&sonypi_device.input_key_dev); - input_unregister_device(&sonypi_device.input_jog_dev); + input_unregister_device(sonypi_device.input_key_dev); + input_unregister_device(sonypi_device.input_jog_dev); kfifo_free(sonypi_device.input_fifo); } diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c index 951545a6ef2d..1c686414e0a1 100644 --- a/drivers/char/stallion.c +++ b/drivers/char/stallion.c @@ -3095,7 +3095,9 @@ static int __init stl_init(void) devfs_mk_cdev(MKDEV(STL_SIOMEMMAJOR, i), S_IFCHR|S_IRUSR|S_IWUSR, "staliomem/%d", i); - class_device_create(stallion_class, MKDEV(STL_SIOMEMMAJOR, i), NULL, "staliomem%d", i); + class_device_create(stallion_class, NULL, + MKDEV(STL_SIOMEMMAJOR, i), NULL, + "staliomem%d", i); } stl_serial->owner = THIS_MODULE; diff --git a/drivers/char/tipar.c b/drivers/char/tipar.c index ec78d2f161f7..41a94bc79f67 100644 --- a/drivers/char/tipar.c +++ b/drivers/char/tipar.c @@ -436,7 +436,7 @@ tipar_register(int nr, struct parport *port) goto out; } - class_device_create(tipar_class, MKDEV(TIPAR_MAJOR, + class_device_create(tipar_class, NULL, MKDEV(TIPAR_MAJOR, TIPAR_MINOR + nr), NULL, "par%d", nr); /* Use devfs, tree: /dev/ticables/par/[0..2] */ err = devfs_mk_cdev(MKDEV(TIPAR_MAJOR, TIPAR_MINOR + nr), diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index e5953f3433f3..f5649a337743 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -2728,7 +2728,7 @@ void tty_register_device(struct tty_driver *driver, unsigned index, pty_line_name(driver, index, name); else tty_line_name(driver, index, name); - class_device_create(tty_class, dev, device, name); + class_device_create(tty_class, NULL, dev, device, "%s", name); } /** @@ -2983,14 +2983,14 @@ static int __init tty_init(void) register_chrdev_region(MKDEV(TTYAUX_MAJOR, 0), 1, "/dev/tty") < 0) panic("Couldn't register /dev/tty driver\n"); devfs_mk_cdev(MKDEV(TTYAUX_MAJOR, 0), S_IFCHR|S_IRUGO|S_IWUGO, "tty"); - class_device_create(tty_class, MKDEV(TTYAUX_MAJOR, 0), NULL, "tty"); + class_device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 0), NULL, "tty"); cdev_init(&console_cdev, &console_fops); if (cdev_add(&console_cdev, MKDEV(TTYAUX_MAJOR, 1), 1) || register_chrdev_region(MKDEV(TTYAUX_MAJOR, 1), 1, "/dev/console") < 0) panic("Couldn't register /dev/console driver\n"); devfs_mk_cdev(MKDEV(TTYAUX_MAJOR, 1), S_IFCHR|S_IRUSR|S_IWUSR, "console"); - class_device_create(tty_class, MKDEV(TTYAUX_MAJOR, 1), NULL, "console"); + class_device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 1), NULL, "console"); #ifdef CONFIG_UNIX98_PTYS cdev_init(&ptmx_cdev, &ptmx_fops); @@ -2998,7 +2998,7 @@ static int __init tty_init(void) register_chrdev_region(MKDEV(TTYAUX_MAJOR, 2), 1, "/dev/ptmx") < 0) panic("Couldn't register /dev/ptmx driver\n"); devfs_mk_cdev(MKDEV(TTYAUX_MAJOR, 2), S_IFCHR|S_IRUGO|S_IWUGO, "ptmx"); - class_device_create(tty_class, MKDEV(TTYAUX_MAJOR, 2), NULL, "ptmx"); + class_device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 2), NULL, "ptmx"); #endif #ifdef CONFIG_VT @@ -3007,7 +3007,7 @@ static int __init tty_init(void) register_chrdev_region(MKDEV(TTY_MAJOR, 0), 1, "/dev/vc/0") < 0) panic("Couldn't register /dev/tty0 driver\n"); devfs_mk_cdev(MKDEV(TTY_MAJOR, 0), S_IFCHR|S_IRUSR|S_IWUSR, "vc/0"); - class_device_create(tty_class, MKDEV(TTY_MAJOR, 0), NULL, "tty0"); + class_device_create(tty_class, NULL, MKDEV(TTY_MAJOR, 0), NULL, "tty0"); vty_init(); #endif diff --git a/drivers/char/vc_screen.c b/drivers/char/vc_screen.c index 79c2928a8817..f66c7ad6fd38 100644 --- a/drivers/char/vc_screen.c +++ b/drivers/char/vc_screen.c @@ -484,8 +484,10 @@ void vcs_make_devfs(struct tty_struct *tty) devfs_mk_cdev(MKDEV(VCS_MAJOR, tty->index + 129), S_IFCHR|S_IRUSR|S_IWUSR, "vcc/a%u", tty->index + 1); - class_device_create(vc_class, MKDEV(VCS_MAJOR, tty->index + 1), NULL, "vcs%u", tty->index + 1); - class_device_create(vc_class, MKDEV(VCS_MAJOR, tty->index + 129), NULL, "vcsa%u", tty->index + 1); + class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 1), + NULL, "vcs%u", tty->index + 1); + class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 129), + NULL, "vcsa%u", tty->index + 1); } void vcs_remove_devfs(struct tty_struct *tty) { @@ -503,7 +505,7 @@ int __init vcs_init(void) devfs_mk_cdev(MKDEV(VCS_MAJOR, 0), S_IFCHR|S_IRUSR|S_IWUSR, "vcc/0"); devfs_mk_cdev(MKDEV(VCS_MAJOR, 128), S_IFCHR|S_IRUSR|S_IWUSR, "vcc/a0"); - class_device_create(vc_class, MKDEV(VCS_MAJOR, 0), NULL, "vcs"); - class_device_create(vc_class, MKDEV(VCS_MAJOR, 128), NULL, "vcsa"); + class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 0), NULL, "vcs"); + class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 128), NULL, "vcsa"); return 0; } diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c index 0aff45fac2e6..a5e104f428f8 100644 --- a/drivers/char/viotape.c +++ b/drivers/char/viotape.c @@ -956,9 +956,9 @@ static int viotape_probe(struct vio_dev *vdev, const struct vio_device_id *id) state[i].cur_part = 0; for (j = 0; j < MAX_PARTITIONS; ++j) state[i].part_stat_rwi[j] = VIOT_IDLE; - class_device_create(tape_class, MKDEV(VIOTAPE_MAJOR, i), NULL, + class_device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i), NULL, "iseries!vt%d", i); - class_device_create(tape_class, MKDEV(VIOTAPE_MAJOR, i | 0x80), + class_device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i | 0x80), NULL, "iseries!nvt%d", i); devfs_mk_cdev(MKDEV(VIOTAPE_MAJOR, i), S_IFCHR | S_IRUSR | S_IWUSR, "iseries/vt%d", i); diff --git a/drivers/char/watchdog/s3c2410_wdt.c b/drivers/char/watchdog/s3c2410_wdt.c index 3625b2601b42..b732020acadb 100644 --- a/drivers/char/watchdog/s3c2410_wdt.c +++ b/drivers/char/watchdog/s3c2410_wdt.c @@ -464,32 +464,28 @@ static void s3c2410wdt_shutdown(struct device *dev) static unsigned long wtcon_save; static unsigned long wtdat_save; -static int s3c2410wdt_suspend(struct device *dev, pm_message_t state, u32 level) +static int s3c2410wdt_suspend(struct device *dev, pm_message_t state) { - if (level == SUSPEND_POWER_DOWN) { - /* Save watchdog state, and turn it off. */ - wtcon_save = readl(wdt_base + S3C2410_WTCON); - wtdat_save = readl(wdt_base + S3C2410_WTDAT); + /* Save watchdog state, and turn it off. */ + wtcon_save = readl(wdt_base + S3C2410_WTCON); + wtdat_save = readl(wdt_base + S3C2410_WTDAT); - /* Note that WTCNT doesn't need to be saved. */ - s3c2410wdt_stop(); - } + /* Note that WTCNT doesn't need to be saved. */ + s3c2410wdt_stop(); return 0; } -static int s3c2410wdt_resume(struct device *dev, u32 level) +static int s3c2410wdt_resume(struct device *dev) { - if (level == RESUME_POWER_ON) { - /* Restore watchdog state. */ + /* Restore watchdog state. */ - writel(wtdat_save, wdt_base + S3C2410_WTDAT); - writel(wtdat_save, wdt_base + S3C2410_WTCNT); /* Reset count */ - writel(wtcon_save, wdt_base + S3C2410_WTCON); + writel(wtdat_save, wdt_base + S3C2410_WTDAT); + writel(wtdat_save, wdt_base + S3C2410_WTCNT); /* Reset count */ + writel(wtcon_save, wdt_base + S3C2410_WTCON); - printk(KERN_INFO PFX "watchdog %sabled\n", - (wtcon_save & S3C2410_WTCON_ENABLE) ? "en" : "dis"); - } + printk(KERN_INFO PFX "watchdog %sabled\n", + (wtcon_save & S3C2410_WTCON_ENABLE) ? "en" : "dis"); return 0; } diff --git a/drivers/hwmon/adm1021.c b/drivers/hwmon/adm1021.c index e928cdb041cb..8102876c7c3f 100644 --- a/drivers/hwmon/adm1021.c +++ b/drivers/hwmon/adm1021.c @@ -121,7 +121,7 @@ static int adm1021_write_value(struct i2c_client *client, u8 reg, static struct adm1021_data *adm1021_update_device(struct device *dev); /* (amalysh) read only mode, otherwise any limit's writing confuse BIOS */ -static int read_only = 0; +static int read_only; /* This is the driver that will be inserted */ @@ -204,11 +204,10 @@ static int adm1021_detect(struct i2c_adapter *adapter, int address, int kind) client structure, even though we cannot fill it completely yet. But it allows us to access adm1021_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct adm1021_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct adm1021_data), GFP_KERNEL))) { err = -ENOMEM; goto error0; } - memset(data, 0, sizeof(struct adm1021_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/adm1025.c b/drivers/hwmon/adm1025.c index 526b7ff179eb..3ec12421694f 100644 --- a/drivers/hwmon/adm1025.c +++ b/drivers/hwmon/adm1025.c @@ -331,11 +331,10 @@ static int adm1025_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct adm1025_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct adm1025_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct adm1025_data)); /* The common I2C client data is placed right before the ADM1025-specific data. */ diff --git a/drivers/hwmon/adm1026.c b/drivers/hwmon/adm1026.c index 625158110fd4..e0f56549d1d8 100644 --- a/drivers/hwmon/adm1026.c +++ b/drivers/hwmon/adm1026.c @@ -315,7 +315,7 @@ static struct i2c_driver adm1026_driver = { .detach_client = adm1026_detach_client, }; -int adm1026_attach_adapter(struct i2c_adapter *adapter) +static int adm1026_attach_adapter(struct i2c_adapter *adapter) { if (!(adapter->class & I2C_CLASS_HWMON)) { return 0; @@ -323,7 +323,7 @@ int adm1026_attach_adapter(struct i2c_adapter *adapter) return i2c_probe(adapter, &addr_data, adm1026_detect); } -int adm1026_detach_client(struct i2c_client *client) +static int adm1026_detach_client(struct i2c_client *client) { struct adm1026_data *data = i2c_get_clientdata(client); hwmon_device_unregister(data->class_dev); @@ -332,7 +332,7 @@ int adm1026_detach_client(struct i2c_client *client) return 0; } -int adm1026_read_value(struct i2c_client *client, u8 reg) +static int adm1026_read_value(struct i2c_client *client, u8 reg) { int res; @@ -346,7 +346,7 @@ int adm1026_read_value(struct i2c_client *client, u8 reg) return res; } -int adm1026_write_value(struct i2c_client *client, u8 reg, int value) +static int adm1026_write_value(struct i2c_client *client, u8 reg, int value) { int res; @@ -360,7 +360,7 @@ int adm1026_write_value(struct i2c_client *client, u8 reg, int value) return res; } -void adm1026_init_client(struct i2c_client *client) +static void adm1026_init_client(struct i2c_client *client) { int value, i; struct adm1026_data *data = i2c_get_clientdata(client); @@ -460,7 +460,7 @@ void adm1026_init_client(struct i2c_client *client) } } -void adm1026_print_gpio(struct i2c_client *client) +static void adm1026_print_gpio(struct i2c_client *client) { struct adm1026_data *data = i2c_get_clientdata(client); int i; @@ -492,7 +492,7 @@ void adm1026_print_gpio(struct i2c_client *client) } } -void adm1026_fixup_gpio(struct i2c_client *client) +static void adm1026_fixup_gpio(struct i2c_client *client) { struct adm1026_data *data = i2c_get_clientdata(client); int i; @@ -1452,8 +1452,8 @@ static DEVICE_ATTR(temp1_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL); static DEVICE_ATTR(temp2_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL); static DEVICE_ATTR(temp3_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL); -int adm1026_detect(struct i2c_adapter *adapter, int address, - int kind) +static int adm1026_detect(struct i2c_adapter *adapter, int address, + int kind) { int company, verstep; struct i2c_client *new_client; @@ -1470,13 +1470,11 @@ int adm1026_detect(struct i2c_adapter *adapter, int address, client structure, even though we cannot fill it completely yet. But it allows us to access adm1026_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct adm1026_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct adm1026_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct adm1026_data)); - new_client = &data->client; i2c_set_clientdata(new_client, data); new_client->addr = address; diff --git a/drivers/hwmon/adm1031.c b/drivers/hwmon/adm1031.c index 58338ed7c8a1..7c545d5eee45 100644 --- a/drivers/hwmon/adm1031.c +++ b/drivers/hwmon/adm1031.c @@ -740,11 +740,10 @@ static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct adm1031_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct adm1031_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct adm1031_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/adm9240.c b/drivers/hwmon/adm9240.c index bc7faef162f7..11dc95f8a17e 100644 --- a/drivers/hwmon/adm9240.c +++ b/drivers/hwmon/adm9240.c @@ -45,6 +45,7 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/i2c.h> +#include <linux/hwmon-sysfs.h> #include <linux/hwmon.h> #include <linux/hwmon-vid.h> #include <linux/err.h> @@ -69,8 +70,7 @@ I2C_CLIENT_INSMOD_3(adm9240, ds1780, lm81); #define ADM9240_REG_INT(nr) (0x41 + (nr)) #define ADM9240_REG_INT_MASK(nr) (0x43 + (nr)) #define ADM9240_REG_TEMP 0x27 -#define ADM9240_REG_TEMP_HIGH 0x39 -#define ADM9240_REG_TEMP_HYST 0x3a +#define ADM9240_REG_TEMP_MAX(nr) (0x39 + (nr)) /* 0, 1 = high, hyst */ #define ADM9240_REG_ANALOG_OUT 0x19 #define ADM9240_REG_CHASSIS_CLEAR 0x46 #define ADM9240_REG_VID_FAN_DIV 0x47 @@ -162,177 +162,155 @@ struct adm9240_data { u8 fan_min[2]; /* rw fan1_min */ u8 fan_div[2]; /* rw fan1_div, read-only accessor */ s16 temp; /* ro temp1_input, 9-bit sign-extended */ - s8 temp_high; /* rw temp1_max */ - s8 temp_hyst; /* rw temp1_max_hyst */ + s8 temp_max[2]; /* rw 0 -> temp_max, 1 -> temp_max_hyst */ u16 alarms; /* ro alarms */ u8 aout; /* rw aout_output */ u8 vid; /* ro vid */ u8 vrm; /* -- vrm set on startup, no accessor */ }; -/* i2c byte read/write interface */ -static int adm9240_read_value(struct i2c_client *client, u8 reg) +/*** sysfs accessors ***/ + +/* temperature */ +static ssize_t show_temp(struct device *dev, struct device_attribute *dummy, + char *buf) { - return i2c_smbus_read_byte_data(client, reg); + struct adm9240_data *data = adm9240_update_device(dev); + return sprintf(buf, "%d\n", data->temp * 500); /* 9-bit value */ } -static int adm9240_write_value(struct i2c_client *client, u8 reg, u8 value) +static ssize_t show_max(struct device *dev, struct device_attribute *devattr, + char *buf) { - return i2c_smbus_write_byte_data(client, reg, value); + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct adm9240_data *data = adm9240_update_device(dev); + return sprintf(buf, "%d\n", data->temp_max[attr->index] * 1000); } -/*** sysfs accessors ***/ +static ssize_t set_max(struct device *dev, struct device_attribute *devattr, + const char *buf, size_t count) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct i2c_client *client = to_i2c_client(dev); + struct adm9240_data *data = i2c_get_clientdata(client); + long val = simple_strtol(buf, NULL, 10); + + down(&data->update_lock); + data->temp_max[attr->index] = TEMP_TO_REG(val); + i2c_smbus_write_byte_data(client, ADM9240_REG_TEMP_MAX(attr->index), + data->temp_max[attr->index]); + up(&data->update_lock); + return count; +} -/* temperature */ -#define show_temp(value, scale) \ -static ssize_t show_##value(struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ - struct adm9240_data *data = adm9240_update_device(dev); \ - return sprintf(buf, "%d\n", data->value * scale); \ -} -show_temp(temp_high, 1000); -show_temp(temp_hyst, 1000); -show_temp(temp, 500); /* 0.5'C per bit */ - -#define set_temp(value, reg) \ -static ssize_t set_##value(struct device *dev, \ - struct device_attribute *attr, \ - const char *buf, size_t count) \ -{ \ - struct i2c_client *client = to_i2c_client(dev); \ - struct adm9240_data *data = adm9240_update_device(dev); \ - long temp = simple_strtoul(buf, NULL, 10); \ - \ - down(&data->update_lock); \ - data->value = TEMP_TO_REG(temp); \ - adm9240_write_value(client, reg, data->value); \ - up(&data->update_lock); \ - return count; \ -} - -set_temp(temp_high, ADM9240_REG_TEMP_HIGH); -set_temp(temp_hyst, ADM9240_REG_TEMP_HYST); - -static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, - show_temp_high, set_temp_high); -static DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, - show_temp_hyst, set_temp_hyst); static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); +static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, + show_max, set_max, 0); +static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, + show_max, set_max, 1); /* voltage */ -static ssize_t show_in(struct device *dev, char *buf, int nr) +static ssize_t show_in(struct device *dev, struct device_attribute *devattr, + char *buf) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct adm9240_data *data = adm9240_update_device(dev); - return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr)); + return sprintf(buf, "%d\n", IN_FROM_REG(data->in[attr->index], + attr->index)); } -static ssize_t show_in_min(struct device *dev, char *buf, int nr) +static ssize_t show_in_min(struct device *dev, + struct device_attribute *devattr, char *buf) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct adm9240_data *data = adm9240_update_device(dev); - return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr)); + return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[attr->index], + attr->index)); } -static ssize_t show_in_max(struct device *dev, char *buf, int nr) +static ssize_t show_in_max(struct device *dev, + struct device_attribute *devattr, char *buf) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct adm9240_data *data = adm9240_update_device(dev); - return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr)); + return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[attr->index], + attr->index)); } -static ssize_t set_in_min(struct device *dev, const char *buf, - size_t count, int nr) +static ssize_t set_in_min(struct device *dev, + struct device_attribute *devattr, + const char *buf, size_t count) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct i2c_client *client = to_i2c_client(dev); struct adm9240_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); down(&data->update_lock); - data->in_min[nr] = IN_TO_REG(val, nr); - adm9240_write_value(client, ADM9240_REG_IN_MIN(nr), data->in_min[nr]); + data->in_min[attr->index] = IN_TO_REG(val, attr->index); + i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MIN(attr->index), + data->in_min[attr->index]); up(&data->update_lock); return count; } -static ssize_t set_in_max(struct device *dev, const char *buf, - size_t count, int nr) +static ssize_t set_in_max(struct device *dev, + struct device_attribute *devattr, + const char *buf, size_t count) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct i2c_client *client = to_i2c_client(dev); struct adm9240_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); down(&data->update_lock); - data->in_max[nr] = IN_TO_REG(val, nr); - adm9240_write_value(client, ADM9240_REG_IN_MAX(nr), data->in_max[nr]); + data->in_max[attr->index] = IN_TO_REG(val, attr->index); + i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MAX(attr->index), + data->in_max[attr->index]); up(&data->update_lock); return count; } -#define show_in_offset(offset) \ -static ssize_t show_in##offset(struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ - return show_in(dev, buf, offset); \ -} \ -static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in##offset, NULL); \ -static ssize_t show_in##offset##_min(struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ - return show_in_min(dev, buf, offset); \ -} \ -static ssize_t show_in##offset##_max(struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ - return show_in_max(dev, buf, offset); \ -} \ -static ssize_t \ -set_in##offset##_min(struct device *dev, \ - struct device_attribute *attr, const char *buf, \ - size_t count) \ -{ \ - return set_in_min(dev, buf, count, offset); \ -} \ -static ssize_t \ -set_in##offset##_max(struct device *dev, \ - struct device_attribute *attr, const char *buf, \ - size_t count) \ -{ \ - return set_in_max(dev, buf, count, offset); \ -} \ -static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ - show_in##offset##_min, set_in##offset##_min); \ -static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ - show_in##offset##_max, set_in##offset##_max); - -show_in_offset(0); -show_in_offset(1); -show_in_offset(2); -show_in_offset(3); -show_in_offset(4); -show_in_offset(5); +#define vin(nr) \ +static SENSOR_DEVICE_ATTR(in##nr##_input, S_IRUGO, \ + show_in, NULL, nr); \ +static SENSOR_DEVICE_ATTR(in##nr##_min, S_IRUGO | S_IWUSR, \ + show_in_min, set_in_min, nr); \ +static SENSOR_DEVICE_ATTR(in##nr##_max, S_IRUGO | S_IWUSR, \ + show_in_max, set_in_max, nr); + +vin(0); +vin(1); +vin(2); +vin(3); +vin(4); +vin(5); /* fans */ -static ssize_t show_fan(struct device *dev, char *buf, int nr) +static ssize_t show_fan(struct device *dev, + struct device_attribute *devattr, char *buf) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct adm9240_data *data = adm9240_update_device(dev); - return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], - 1 << data->fan_div[nr])); + return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index], + 1 << data->fan_div[attr->index])); } -static ssize_t show_fan_min(struct device *dev, char *buf, int nr) +static ssize_t show_fan_min(struct device *dev, + struct device_attribute *devattr, char *buf) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct adm9240_data *data = adm9240_update_device(dev); - return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], - 1 << data->fan_div[nr])); + return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[attr->index], + 1 << data->fan_div[attr->index])); } -static ssize_t show_fan_div(struct device *dev, char *buf, int nr) +static ssize_t show_fan_div(struct device *dev, + struct device_attribute *devattr, char *buf) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct adm9240_data *data = adm9240_update_device(dev); - return sprintf(buf, "%d\n", 1 << data->fan_div[nr]); + return sprintf(buf, "%d\n", 1 << data->fan_div[attr->index]); } /* write new fan div, callers must hold data->update_lock */ @@ -341,16 +319,16 @@ static void adm9240_write_fan_div(struct i2c_client *client, int nr, { u8 reg, old, shift = (nr + 2) * 2; - reg = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV); + reg = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV); old = (reg >> shift) & 3; reg &= ~(3 << shift); reg |= (fan_div << shift); - adm9240_write_value(client, ADM9240_REG_VID_FAN_DIV, reg); + i2c_smbus_write_byte_data(client, ADM9240_REG_VID_FAN_DIV, reg); dev_dbg(&client->dev, "fan%d clock divider changed from %u " "to %u\n", nr + 1, 1 << old, 1 << fan_div); } -/* +/* * set fan speed low limit: * * - value is zero: disable fan speed low limit alarm @@ -361,12 +339,15 @@ static void adm9240_write_fan_div(struct i2c_client *client, int nr, * - otherwise: select fan clock divider to suit fan speed low limit, * measurement code may adjust registers to ensure fan speed reading */ -static ssize_t set_fan_min(struct device *dev, const char *buf, - size_t count, int nr) +static ssize_t set_fan_min(struct device *dev, + struct device_attribute *devattr, + const char *buf, size_t count) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct i2c_client *client = to_i2c_client(dev); struct adm9240_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); + int nr = attr->index; u8 new_div; down(&data->update_lock); @@ -406,50 +387,27 @@ static ssize_t set_fan_min(struct device *dev, const char *buf, data->fan_div[nr] = new_div; adm9240_write_fan_div(client, nr, new_div); } - adm9240_write_value(client, ADM9240_REG_FAN_MIN(nr), + i2c_smbus_write_byte_data(client, ADM9240_REG_FAN_MIN(nr), data->fan_min[nr]); up(&data->update_lock); return count; } -#define show_fan_offset(offset) \ -static ssize_t show_fan_##offset (struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ -return show_fan(dev, buf, offset - 1); \ -} \ -static ssize_t show_fan_##offset##_div (struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ -return show_fan_div(dev, buf, offset - 1); \ -} \ -static ssize_t show_fan_##offset##_min (struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ -return show_fan_min(dev, buf, offset - 1); \ -} \ -static ssize_t set_fan_##offset##_min (struct device *dev, \ - struct device_attribute *attr, \ - const char *buf, size_t count) \ -{ \ -return set_fan_min(dev, buf, count, offset - 1); \ -} \ -static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ - show_fan_##offset, NULL); \ -static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \ - show_fan_##offset##_div, NULL); \ -static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ - show_fan_##offset##_min, set_fan_##offset##_min); - -show_fan_offset(1); -show_fan_offset(2); +#define fan(nr) \ +static SENSOR_DEVICE_ATTR(fan##nr##_input, S_IRUGO, \ + show_fan, NULL, nr - 1); \ +static SENSOR_DEVICE_ATTR(fan##nr##_div, S_IRUGO, \ + show_fan_div, NULL, nr - 1); \ +static SENSOR_DEVICE_ATTR(fan##nr##_min, S_IRUGO | S_IWUSR, \ + show_fan_min, set_fan_min, nr - 1); + +fan(1); +fan(2); /* alarms */ -static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t show_alarms(struct device *dev, + struct device_attribute *attr, char *buf) { struct adm9240_data *data = adm9240_update_device(dev); return sprintf(buf, "%u\n", data->alarms); @@ -457,7 +415,8 @@ static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, ch static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); /* vid */ -static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t show_vid(struct device *dev, + struct device_attribute *attr, char *buf) { struct adm9240_data *data = adm9240_update_device(dev); return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); @@ -465,13 +424,16 @@ static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); /* analog output */ -static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t show_aout(struct device *dev, + struct device_attribute *attr, char *buf) { struct adm9240_data *data = adm9240_update_device(dev); return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); } -static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +static ssize_t set_aout(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { struct i2c_client *client = to_i2c_client(dev); struct adm9240_data *data = i2c_get_clientdata(client); @@ -479,20 +441,23 @@ static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const down(&data->update_lock); data->aout = AOUT_TO_REG(val); - adm9240_write_value(client, ADM9240_REG_ANALOG_OUT, data->aout); + i2c_smbus_write_byte_data(client, ADM9240_REG_ANALOG_OUT, data->aout); up(&data->update_lock); return count; } static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); /* chassis_clear */ -static ssize_t chassis_clear(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +static ssize_t chassis_clear(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { struct i2c_client *client = to_i2c_client(dev); unsigned long val = simple_strtol(buf, NULL, 10); if (val == 1) { - adm9240_write_value(client, ADM9240_REG_CHASSIS_CLEAR, 0x80); + i2c_smbus_write_byte_data(client, + ADM9240_REG_CHASSIS_CLEAR, 0x80); dev_dbg(&client->dev, "chassis intrusion latch cleared\n"); } return count; @@ -513,11 +478,10 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct adm9240_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct adm9240_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); @@ -533,7 +497,7 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind) if (kind < 0) { /* verify chip: reg address should match i2c address */ - if (adm9240_read_value(new_client, ADM9240_REG_I2C_ADDR) + if (i2c_smbus_read_byte_data(new_client, ADM9240_REG_I2C_ADDR) != address) { dev_err(&adapter->dev, "detect fail: address match, " "0x%02x\n", address); @@ -541,8 +505,8 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind) } /* check known chip manufacturer */ - man_id = adm9240_read_value(new_client, ADM9240_REG_MAN_ID); - + man_id = i2c_smbus_read_byte_data(new_client, + ADM9240_REG_MAN_ID); if (man_id == 0x23) { kind = adm9240; } else if (man_id == 0xda) { @@ -556,7 +520,8 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind) } /* successful detect, print chip info */ - die_rev = adm9240_read_value(new_client, ADM9240_REG_DIE_REV); + die_rev = i2c_smbus_read_byte_data(new_client, + ADM9240_REG_DIE_REV); dev_info(&adapter->dev, "found %s revision %u\n", man_id == 0x23 ? "ADM9240" : man_id == 0xda ? "DS1780" : "LM81", die_rev); @@ -588,33 +553,59 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind) goto exit_detach; } - device_create_file(&new_client->dev, &dev_attr_in0_input); - device_create_file(&new_client->dev, &dev_attr_in0_min); - device_create_file(&new_client->dev, &dev_attr_in0_max); - device_create_file(&new_client->dev, &dev_attr_in1_input); - device_create_file(&new_client->dev, &dev_attr_in1_min); - device_create_file(&new_client->dev, &dev_attr_in1_max); - device_create_file(&new_client->dev, &dev_attr_in2_input); - device_create_file(&new_client->dev, &dev_attr_in2_min); - device_create_file(&new_client->dev, &dev_attr_in2_max); - device_create_file(&new_client->dev, &dev_attr_in3_input); - device_create_file(&new_client->dev, &dev_attr_in3_min); - device_create_file(&new_client->dev, &dev_attr_in3_max); - device_create_file(&new_client->dev, &dev_attr_in4_input); - device_create_file(&new_client->dev, &dev_attr_in4_min); - device_create_file(&new_client->dev, &dev_attr_in4_max); - device_create_file(&new_client->dev, &dev_attr_in5_input); - device_create_file(&new_client->dev, &dev_attr_in5_min); - device_create_file(&new_client->dev, &dev_attr_in5_max); - device_create_file(&new_client->dev, &dev_attr_temp1_max); - device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst); + device_create_file(&new_client->dev, + &sensor_dev_attr_in0_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in0_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in0_max.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in1_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in1_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in1_max.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in2_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in2_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in2_max.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in3_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in3_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in3_max.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in4_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in4_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in4_max.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in5_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in5_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_in5_max.dev_attr); device_create_file(&new_client->dev, &dev_attr_temp1_input); - device_create_file(&new_client->dev, &dev_attr_fan1_input); - device_create_file(&new_client->dev, &dev_attr_fan1_div); - device_create_file(&new_client->dev, &dev_attr_fan1_min); - device_create_file(&new_client->dev, &dev_attr_fan2_input); - device_create_file(&new_client->dev, &dev_attr_fan2_div); - device_create_file(&new_client->dev, &dev_attr_fan2_min); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp1_max.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp1_max_hyst.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_div.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_div.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_min.dev_attr); device_create_file(&new_client->dev, &dev_attr_alarms); device_create_file(&new_client->dev, &dev_attr_aout_output); device_create_file(&new_client->dev, &dev_attr_chassis_clear); @@ -654,8 +645,8 @@ static int adm9240_detach_client(struct i2c_client *client) static void adm9240_init_client(struct i2c_client *client) { struct adm9240_data *data = i2c_get_clientdata(client); - u8 conf = adm9240_read_value(client, ADM9240_REG_CONFIG); - u8 mode = adm9240_read_value(client, ADM9240_REG_TEMP_CONF) & 3; + u8 conf = i2c_smbus_read_byte_data(client, ADM9240_REG_CONFIG); + u8 mode = i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_CONF) & 3; data->vrm = vid_which_vrm(); /* need this to report vid as mV */ @@ -672,18 +663,22 @@ static void adm9240_init_client(struct i2c_client *client) for (i = 0; i < 6; i++) { - adm9240_write_value(client, + i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MIN(i), 0); - adm9240_write_value(client, + i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MAX(i), 255); } - adm9240_write_value(client, ADM9240_REG_FAN_MIN(0), 255); - adm9240_write_value(client, ADM9240_REG_FAN_MIN(1), 255); - adm9240_write_value(client, ADM9240_REG_TEMP_HIGH, 127); - adm9240_write_value(client, ADM9240_REG_TEMP_HYST, 127); + i2c_smbus_write_byte_data(client, + ADM9240_REG_FAN_MIN(0), 255); + i2c_smbus_write_byte_data(client, + ADM9240_REG_FAN_MIN(1), 255); + i2c_smbus_write_byte_data(client, + ADM9240_REG_TEMP_MAX(0), 127); + i2c_smbus_write_byte_data(client, + ADM9240_REG_TEMP_MAX(1), 127); /* start measurement cycle */ - adm9240_write_value(client, ADM9240_REG_CONFIG, 1); + i2c_smbus_write_byte_data(client, ADM9240_REG_CONFIG, 1); dev_info(&client->dev, "cold start: config was 0x%02x " "mode %u\n", conf, mode); @@ -704,25 +699,25 @@ static struct adm9240_data *adm9240_update_device(struct device *dev) for (i = 0; i < 6; i++) /* read voltages */ { - data->in[i] = adm9240_read_value(client, + data->in[i] = i2c_smbus_read_byte_data(client, ADM9240_REG_IN(i)); } - data->alarms = adm9240_read_value(client, + data->alarms = i2c_smbus_read_byte_data(client, ADM9240_REG_INT(0)) | - adm9240_read_value(client, + i2c_smbus_read_byte_data(client, ADM9240_REG_INT(1)) << 8; /* read temperature: assume temperature changes less than * 0.5'C per two measurement cycles thus ignore possible * but unlikely aliasing error on lsb reading. --Grant */ - data->temp = ((adm9240_read_value(client, + data->temp = ((i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP) << 8) | - adm9240_read_value(client, + i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_CONF)) / 128; for (i = 0; i < 2; i++) /* read fans */ { - data->fan[i] = adm9240_read_value(client, + data->fan[i] = i2c_smbus_read_byte_data(client, ADM9240_REG_FAN(i)); /* adjust fan clock divider on overflow */ @@ -747,30 +742,30 @@ static struct adm9240_data *adm9240_update_device(struct device *dev) for (i = 0; i < 6; i++) { - data->in_min[i] = adm9240_read_value(client, + data->in_min[i] = i2c_smbus_read_byte_data(client, ADM9240_REG_IN_MIN(i)); - data->in_max[i] = adm9240_read_value(client, + data->in_max[i] = i2c_smbus_read_byte_data(client, ADM9240_REG_IN_MAX(i)); } for (i = 0; i < 2; i++) { - data->fan_min[i] = adm9240_read_value(client, + data->fan_min[i] = i2c_smbus_read_byte_data(client, ADM9240_REG_FAN_MIN(i)); } - data->temp_high = adm9240_read_value(client, - ADM9240_REG_TEMP_HIGH); - data->temp_hyst = adm9240_read_value(client, - ADM9240_REG_TEMP_HYST); + data->temp_max[0] = i2c_smbus_read_byte_data(client, + ADM9240_REG_TEMP_MAX(0)); + data->temp_max[1] = i2c_smbus_read_byte_data(client, + ADM9240_REG_TEMP_MAX(1)); /* read fan divs and 5-bit VID */ - i = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV); + i = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV); data->fan_div[0] = (i >> 4) & 3; data->fan_div[1] = (i >> 6) & 3; data->vid = i & 0x0f; - data->vid |= (adm9240_read_value(client, + data->vid |= (i2c_smbus_read_byte_data(client, ADM9240_REG_VID4) & 1) << 4; /* read analog out */ - data->aout = adm9240_read_value(client, + data->aout = i2c_smbus_read_byte_data(client, ADM9240_REG_ANALOG_OUT); data->last_updated_config = jiffies; diff --git a/drivers/hwmon/asb100.c b/drivers/hwmon/asb100.c index 8e34855a6274..52c469722a65 100644 --- a/drivers/hwmon/asb100.c +++ b/drivers/hwmon/asb100.c @@ -629,19 +629,17 @@ static int asb100_detect_subclients(struct i2c_adapter *adapter, int address, int i, id, err; struct asb100_data *data = i2c_get_clientdata(new_client); - data->lm75[0] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); if (!(data->lm75[0])) { err = -ENOMEM; goto ERROR_SC_0; } - memset(data->lm75[0], 0x00, sizeof(struct i2c_client)); - data->lm75[1] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); if (!(data->lm75[1])) { err = -ENOMEM; goto ERROR_SC_1; } - memset(data->lm75[1], 0x00, sizeof(struct i2c_client)); id = i2c_adapter_id(adapter); @@ -724,12 +722,11 @@ static int asb100_detect(struct i2c_adapter *adapter, int address, int kind) client structure, even though we cannot fill it completely yet. But it allows us to access asb100_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct asb100_data), GFP_KERNEL))) { - pr_debug("asb100.o: detect failed, kmalloc failed!\n"); + if (!(data = kzalloc(sizeof(struct asb100_data), GFP_KERNEL))) { + pr_debug("asb100.o: detect failed, kzalloc failed!\n"); err = -ENOMEM; goto ERROR0; } - memset(data, 0, sizeof(struct asb100_data)); new_client = &data->client; init_MUTEX(&data->lock); diff --git a/drivers/hwmon/atxp1.c b/drivers/hwmon/atxp1.c index deb4d34c9539..53324f56404e 100644 --- a/drivers/hwmon/atxp1.c +++ b/drivers/hwmon/atxp1.c @@ -253,6 +253,8 @@ static DEVICE_ATTR(gpio2, S_IRUGO | S_IWUSR, atxp1_showgpio2, atxp1_storegpio2); static int atxp1_attach_adapter(struct i2c_adapter *adapter) { + if (!(adapter->class & I2C_CLASS_HWMON)) + return 0; return i2c_probe(adapter, &addr_data, &atxp1_detect); }; @@ -266,12 +268,11 @@ static int atxp1_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct atxp1_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct atxp1_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct atxp1_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/ds1621.c b/drivers/hwmon/ds1621.c index b0199e063d0e..34f71b7c7f37 100644 --- a/drivers/hwmon/ds1621.c +++ b/drivers/hwmon/ds1621.c @@ -180,12 +180,14 @@ static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, set_temp_max); static int ds1621_attach_adapter(struct i2c_adapter *adapter) { + if (!(adapter->class & I2C_CLASS_HWMON)) + return 0; return i2c_probe(adapter, &addr_data, ds1621_detect); } /* This function is called by i2c_probe */ -int ds1621_detect(struct i2c_adapter *adapter, int address, - int kind) +static int ds1621_detect(struct i2c_adapter *adapter, int address, + int kind) { int conf, temp; struct i2c_client *new_client; @@ -200,11 +202,10 @@ int ds1621_detect(struct i2c_adapter *adapter, int address, /* OK. For now, we presume we have a valid client. We now create the client structure, even though we cannot fill it completely yet. But it allows us to access ds1621_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct ds1621_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct ds1621_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct ds1621_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/fscher.c b/drivers/hwmon/fscher.c index eef6061d786b..a02e1c34c757 100644 --- a/drivers/hwmon/fscher.c +++ b/drivers/hwmon/fscher.c @@ -303,11 +303,10 @@ static int fscher_detect(struct i2c_adapter *adapter, int address, int kind) /* OK. For now, we presume we have a valid client. We now create the * client structure, even though we cannot fill it completely yet. * But it allows us to access i2c_smbus_read_byte_data. */ - if (!(data = kmalloc(sizeof(struct fscher_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct fscher_data)); /* The common I2C client data is placed right before the * Hermes-specific data. */ diff --git a/drivers/hwmon/fscpos.c b/drivers/hwmon/fscpos.c index 5fc77a5fed07..64e4edc64f8d 100644 --- a/drivers/hwmon/fscpos.c +++ b/drivers/hwmon/fscpos.c @@ -438,7 +438,7 @@ static int fscpos_attach_adapter(struct i2c_adapter *adapter) return i2c_probe(adapter, &addr_data, fscpos_detect); } -int fscpos_detect(struct i2c_adapter *adapter, int address, int kind) +static int fscpos_detect(struct i2c_adapter *adapter, int address, int kind) { struct i2c_client *new_client; struct fscpos_data *data; @@ -453,11 +453,10 @@ int fscpos_detect(struct i2c_adapter *adapter, int address, int kind) * But it allows us to access fscpos_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct fscpos_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct fscpos_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct fscpos_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/gl518sm.c b/drivers/hwmon/gl518sm.c index 256b9323c84b..2f178dbe3d87 100644 --- a/drivers/hwmon/gl518sm.c +++ b/drivers/hwmon/gl518sm.c @@ -365,11 +365,10 @@ static int gl518_detect(struct i2c_adapter *adapter, int address, int kind) client structure, even though we cannot fill it completely yet. But it allows us to access gl518_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct gl518_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct gl518_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct gl518_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/gl520sm.c b/drivers/hwmon/gl520sm.c index 12fd757066fc..c39ba1239426 100644 --- a/drivers/hwmon/gl520sm.c +++ b/drivers/hwmon/gl520sm.c @@ -536,11 +536,10 @@ static int gl520_detect(struct i2c_adapter *adapter, int address, int kind) client structure, even though we cannot fill it completely yet. But it allows us to access gl520_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct gl520_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct gl520_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/hdaps.c b/drivers/hwmon/hdaps.c index 7f0107613827..0015da5668a1 100644 --- a/drivers/hwmon/hdaps.c +++ b/drivers/hwmon/hdaps.c @@ -296,11 +296,9 @@ static int hdaps_probe(struct device *dev) return 0; } -static int hdaps_resume(struct device *dev, u32 level) +static int hdaps_resume(struct device *dev) { - if (level == RESUME_ENABLE) - return hdaps_device_init(); - return 0; + return hdaps_device_init(); } static struct device_driver hdaps_driver = { diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c index 9b41c9bd805f..6f48579799b5 100644 --- a/drivers/hwmon/hwmon.c +++ b/drivers/hwmon/hwmon.c @@ -45,7 +45,7 @@ struct class_device *hwmon_device_register(struct device *dev) return ERR_PTR(-ENOMEM); id = id & MAX_ID_MASK; - cdev = class_device_create(hwmon_class, MKDEV(0,0), dev, + cdev = class_device_create(hwmon_class, NULL, MKDEV(0,0), dev, HWMON_ID_FORMAT, id); if (IS_ERR(cdev)) diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 53cc2b6d6385..6c41e25e670b 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -2,7 +2,7 @@ it87.c - Part of lm_sensors, Linux kernel modules for hardware monitoring. - Supports: IT8705F Super I/O chip w/LPC interface & SMBus + Supports: IT8705F Super I/O chip w/LPC interface IT8712F Super I/O chip w/LPC interface & SMBus Sis950 A clone of the IT8705F @@ -47,7 +47,7 @@ /* Addresses to scan */ static unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END }; -static unsigned short isa_address = 0x290; +static unsigned short isa_address; /* Insmod parameters */ I2C_CLIENT_INSMOD_2(it87, it8712); @@ -706,7 +706,7 @@ static int it87_isa_attach_adapter(struct i2c_adapter *adapter) } /* SuperIO detection - will change isa_address if a chip is found */ -static int __init it87_find(int *address) +static int __init it87_find(unsigned short *address) { int err = -ENODEV; @@ -738,7 +738,7 @@ exit: } /* This function is called by i2c_probe */ -int it87_detect(struct i2c_adapter *adapter, int address, int kind) +static int it87_detect(struct i2c_adapter *adapter, int address, int kind) { int i; struct i2c_client *new_client; @@ -757,42 +757,14 @@ int it87_detect(struct i2c_adapter *adapter, int address, int kind) if (!request_region(address, IT87_EXTENT, it87_isa_driver.name)) goto ERROR0; - /* Probe whether there is anything available on this address. Already - done for SMBus and Super-I/O clients */ - if (kind < 0) { - if (is_isa && !chip_type) { -#define REALLY_SLOW_IO - /* We need the timeouts for at least some IT87-like chips. But only - if we read 'undefined' registers. */ - i = inb_p(address + 1); - if (inb_p(address + 2) != i - || inb_p(address + 3) != i - || inb_p(address + 7) != i) { - err = -ENODEV; - goto ERROR1; - } -#undef REALLY_SLOW_IO - - /* Let's just hope nothing breaks here */ - i = inb_p(address + 5) & 0x7f; - outb_p(~i & 0x7f, address + 5); - if ((inb_p(address + 5) & 0x7f) != (~i & 0x7f)) { - outb_p(i, address + 5); - err = -ENODEV; - goto ERROR1; - } - } - } - - /* OK. For now, we presume we have a valid client. We now create the + /* For now, we presume we have a valid client. We create the client structure, even though we cannot fill it completely yet. But it allows us to access it87_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct it87_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR1; } - memset(data, 0, sizeof(struct it87_data)); new_client = &data->client; if (is_isa) @@ -1182,20 +1154,18 @@ static struct it87_data *it87_update_device(struct device *dev) static int __init sm_it87_init(void) { - int addr, res; - - if (!it87_find(&addr)) { - isa_address = addr; - } + int res; res = i2c_add_driver(&it87_driver); if (res) return res; - res = i2c_isa_add_driver(&it87_isa_driver); - if (res) { - i2c_del_driver(&it87_driver); - return res; + if (!it87_find(&isa_address)) { + res = i2c_isa_add_driver(&it87_isa_driver); + if (res) { + i2c_del_driver(&it87_driver); + return res; + } } return 0; diff --git a/drivers/hwmon/lm63.c b/drivers/hwmon/lm63.c index be5c7095ecbb..954ec2497249 100644 --- a/drivers/hwmon/lm63.c +++ b/drivers/hwmon/lm63.c @@ -375,11 +375,10 @@ static int lm63_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct lm63_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct lm63_data)); /* The common I2C client data is placed right before the LM63-specific data. */ diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c index 9a3ebdf583f4..d70f4c8fc1e6 100644 --- a/drivers/hwmon/lm75.c +++ b/drivers/hwmon/lm75.c @@ -127,11 +127,10 @@ static int lm75_detect(struct i2c_adapter *adapter, int address, int kind) /* OK. For now, we presume we have a valid client. We now create the client structure, even though we cannot fill it completely yet. But it allows us to access lm75_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct lm75_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct lm75_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct lm75_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/lm77.c b/drivers/hwmon/lm77.c index 866eab96a6f6..9380fda7dcd1 100644 --- a/drivers/hwmon/lm77.c +++ b/drivers/hwmon/lm77.c @@ -226,11 +226,10 @@ static int lm77_detect(struct i2c_adapter *adapter, int address, int kind) /* OK. For now, we presume we have a valid client. We now create the client structure, even though we cannot fill it completely yet. But it allows us to access lm77_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct lm77_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct lm77_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct lm77_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c index f6730dc3573b..bde0cda9477e 100644 --- a/drivers/hwmon/lm78.c +++ b/drivers/hwmon/lm78.c @@ -480,7 +480,7 @@ static int lm78_isa_attach_adapter(struct i2c_adapter *adapter) } /* This function is called by i2c_probe */ -int lm78_detect(struct i2c_adapter *adapter, int address, int kind) +static int lm78_detect(struct i2c_adapter *adapter, int address, int kind) { int i, err; struct i2c_client *new_client; @@ -540,11 +540,10 @@ int lm78_detect(struct i2c_adapter *adapter, int address, int kind) client structure, even though we cannot fill it completely yet. But it allows us to access lm78_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct lm78_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct lm78_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR1; } - memset(data, 0, sizeof(struct lm78_data)); new_client = &data->client; if (is_isa) @@ -726,7 +725,6 @@ static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value) return i2c_smbus_write_byte_data(client, reg, value); } -/* Called when we have found a new LM78. It should set limits, etc. */ static void lm78_init_client(struct i2c_client *client) { u8 config = lm78_read_value(client, LM78_REG_CONFIG); diff --git a/drivers/hwmon/lm80.c b/drivers/hwmon/lm80.c index 83af8b3a0cac..c359fdea211e 100644 --- a/drivers/hwmon/lm80.c +++ b/drivers/hwmon/lm80.c @@ -393,7 +393,7 @@ static int lm80_attach_adapter(struct i2c_adapter *adapter) return i2c_probe(adapter, &addr_data, lm80_detect); } -int lm80_detect(struct i2c_adapter *adapter, int address, int kind) +static int lm80_detect(struct i2c_adapter *adapter, int address, int kind) { int i, cur; struct i2c_client *new_client; @@ -407,11 +407,10 @@ int lm80_detect(struct i2c_adapter *adapter, int address, int kind) /* OK. For now, we presume we have a valid client. We now create the client structure, even though we cannot fill it completely yet. But it allows us to access lm80_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct lm80_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct lm80_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct lm80_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/lm83.c b/drivers/hwmon/lm83.c index d74b2c20c719..9a70611a9f69 100644 --- a/drivers/hwmon/lm83.c +++ b/drivers/hwmon/lm83.c @@ -230,11 +230,10 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct lm83_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct lm83_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct lm83_data)); /* The common I2C client data is placed right after the * LM83-specific data. */ diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c index ab214df9624b..d1070ed2bee6 100644 --- a/drivers/hwmon/lm85.c +++ b/drivers/hwmon/lm85.c @@ -1007,14 +1007,14 @@ temp_auto(1); temp_auto(2); temp_auto(3); -int lm85_attach_adapter(struct i2c_adapter *adapter) +static int lm85_attach_adapter(struct i2c_adapter *adapter) { if (!(adapter->class & I2C_CLASS_HWMON)) return 0; return i2c_probe(adapter, &addr_data, lm85_detect); } -int lm85_detect(struct i2c_adapter *adapter, int address, +static int lm85_detect(struct i2c_adapter *adapter, int address, int kind) { int company, verstep ; @@ -1033,11 +1033,10 @@ int lm85_detect(struct i2c_adapter *adapter, int address, client structure, even though we cannot fill it completely yet. But it allows us to access lm85_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR0; } - memset(data, 0, sizeof(struct lm85_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); @@ -1236,7 +1235,7 @@ int lm85_detect(struct i2c_adapter *adapter, int address, return err; } -int lm85_detach_client(struct i2c_client *client) +static int lm85_detach_client(struct i2c_client *client) { struct lm85_data *data = i2c_get_clientdata(client); hwmon_device_unregister(data->class_dev); @@ -1246,7 +1245,7 @@ int lm85_detach_client(struct i2c_client *client) } -int lm85_read_value(struct i2c_client *client, u8 reg) +static int lm85_read_value(struct i2c_client *client, u8 reg) { int res; @@ -1276,7 +1275,7 @@ int lm85_read_value(struct i2c_client *client, u8 reg) return res ; } -int lm85_write_value(struct i2c_client *client, u8 reg, int value) +static int lm85_write_value(struct i2c_client *client, u8 reg, int value) { int res ; @@ -1305,7 +1304,7 @@ int lm85_write_value(struct i2c_client *client, u8 reg, int value) return res ; } -void lm85_init_client(struct i2c_client *client) +static void lm85_init_client(struct i2c_client *client) { int value; struct lm85_data *data = i2c_get_clientdata(client); diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c index dca996de4c33..eeec18177861 100644 --- a/drivers/hwmon/lm87.c +++ b/drivers/hwmon/lm87.c @@ -554,11 +554,10 @@ static int lm87_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct lm87_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct lm87_data)); /* The common I2C client data is placed right before the LM87-specific data. */ diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index 14de05fcd431..83cf2e1b09f5 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -31,7 +31,7 @@ * Devices. That chip is similar to the LM90, with a few differences * that are not handled by this driver. Complete datasheet can be * obtained from Analog's website at: - * http://products.analog.com/products/info.asp?product=ADM1032 + * http://www.analog.com/en/prod/0,2877,ADM1032,00.html * Among others, it has a higher accuracy than the LM90, much like the * LM86 does. * @@ -49,7 +49,7 @@ * register values are decoded differently) it is ignored by this * driver. Complete datasheet can be obtained from Analog's website * at: - * http://products.analog.com/products/info.asp?product=ADT7461 + * http://www.analog.com/en/prod/0,2877,ADT7461,00.html * * Since the LM90 was the first chipset supported by this driver, most * comments will refer to this chipset, but are actually general and @@ -83,10 +83,10 @@ * Addresses to scan * Address is fully defined internally and cannot be changed except for * MAX6659. - * LM86, LM89, LM90, LM99, ADM1032, MAX6657 and MAX6658 have address 0x4c. - * LM89-1, and LM99-1 have address 0x4d. + * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6657 and MAX6658 + * have address 0x4c. + * ADM1032-2, ADT7461-2, LM89-1, and LM99-1 have address 0x4d. * MAX6659 can have address 0x4c, 0x4d or 0x4e (unsupported). - * ADT7461 always has address 0x4c. */ static unsigned short normal_i2c[] = { 0x4c, 0x4d, I2C_CLIENT_END }; @@ -345,10 +345,74 @@ static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temphyst, static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temphyst, NULL, 4); static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); +/* pec used for ADM1032 only */ +static ssize_t show_pec(struct device *dev, struct device_attribute *dummy, + char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + return sprintf(buf, "%d\n", !!(client->flags & I2C_CLIENT_PEC)); +} + +static ssize_t set_pec(struct device *dev, struct device_attribute *dummy, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + long val = simple_strtol(buf, NULL, 10); + + switch (val) { + case 0: + client->flags &= ~I2C_CLIENT_PEC; + break; + case 1: + client->flags |= I2C_CLIENT_PEC; + break; + default: + return -EINVAL; + } + + return count; +} + +static DEVICE_ATTR(pec, S_IWUSR | S_IRUGO, show_pec, set_pec); + /* * Real code */ +/* The ADM1032 supports PEC but not on write byte transactions, so we need + to explicitely ask for a transaction without PEC. */ +static inline s32 adm1032_write_byte(struct i2c_client *client, u8 value) +{ + return i2c_smbus_xfer(client->adapter, client->addr, + client->flags & ~I2C_CLIENT_PEC, + I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL); +} + +/* It is assumed that client->update_lock is held (unless we are in + detection or initialization steps). This matters when PEC is enabled, + because we don't want the address pointer to change between the write + byte and the read byte transactions. */ +static int lm90_read_reg(struct i2c_client* client, u8 reg, u8 *value) +{ + int err; + + if (client->flags & I2C_CLIENT_PEC) { + err = adm1032_write_byte(client, reg); + if (err >= 0) + err = i2c_smbus_read_byte(client); + } else + err = i2c_smbus_read_byte_data(client, reg); + + if (err < 0) { + dev_warn(&client->dev, "Register %#02x read failed (%d)\n", + reg, err); + return err; + } + *value = err; + + return 0; +} + static int lm90_attach_adapter(struct i2c_adapter *adapter) { if (!(adapter->class & I2C_CLASS_HWMON)) @@ -370,11 +434,10 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct lm90_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct lm90_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct lm90_data)); /* The common I2C client data is placed right before the LM90-specific data. */ @@ -403,20 +466,22 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind) if (kind < 0) { /* detection and identification */ u8 man_id, chip_id, reg_config1, reg_convrate; - man_id = i2c_smbus_read_byte_data(new_client, - LM90_REG_R_MAN_ID); - chip_id = i2c_smbus_read_byte_data(new_client, - LM90_REG_R_CHIP_ID); - reg_config1 = i2c_smbus_read_byte_data(new_client, - LM90_REG_R_CONFIG1); - reg_convrate = i2c_smbus_read_byte_data(new_client, - LM90_REG_R_CONVRATE); + if (lm90_read_reg(new_client, LM90_REG_R_MAN_ID, + &man_id) < 0 + || lm90_read_reg(new_client, LM90_REG_R_CHIP_ID, + &chip_id) < 0 + || lm90_read_reg(new_client, LM90_REG_R_CONFIG1, + ®_config1) < 0 + || lm90_read_reg(new_client, LM90_REG_R_CONVRATE, + ®_convrate) < 0) + goto exit_free; if (man_id == 0x01) { /* National Semiconductor */ u8 reg_config2; - reg_config2 = i2c_smbus_read_byte_data(new_client, - LM90_REG_R_CONFIG2); + if (lm90_read_reg(new_client, LM90_REG_R_CONFIG2, + ®_config2) < 0) + goto exit_free; if ((reg_config1 & 0x2A) == 0x00 && (reg_config2 & 0xF8) == 0x00 @@ -435,14 +500,12 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind) } } else if (man_id == 0x41) { /* Analog Devices */ - if (address == 0x4C - && (chip_id & 0xF0) == 0x40 /* ADM1032 */ + if ((chip_id & 0xF0) == 0x40 /* ADM1032 */ && (reg_config1 & 0x3F) == 0x00 && reg_convrate <= 0x0A) { kind = adm1032; } else - if (address == 0x4c - && chip_id == 0x51 /* ADT7461 */ + if (chip_id == 0x51 /* ADT7461 */ && (reg_config1 & 0x1F) == 0x00 /* check compat mode */ && reg_convrate <= 0x0A) { kind = adt7461; @@ -477,6 +540,10 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind) name = "lm90"; } else if (kind == adm1032) { name = "adm1032"; + /* The ADM1032 supports PEC, but only if combined + transactions are not used. */ + if (i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE)) + new_client->flags |= I2C_CLIENT_PEC; } else if (kind == lm99) { name = "lm99"; } else if (kind == lm86) { @@ -529,6 +596,9 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind) &sensor_dev_attr_temp2_crit_hyst.dev_attr); device_create_file(&new_client->dev, &dev_attr_alarms); + if (new_client->flags & I2C_CLIENT_PEC) + device_create_file(&new_client->dev, &dev_attr_pec); + return 0; exit_detach: @@ -548,7 +618,10 @@ static void lm90_init_client(struct i2c_client *client) */ i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE, 5); /* 2 Hz */ - config = i2c_smbus_read_byte_data(client, LM90_REG_R_CONFIG1); + if (lm90_read_reg(client, LM90_REG_R_CONFIG1, &config) < 0) { + dev_warn(&client->dev, "Initialization failed!\n"); + return; + } if (config & 0x40) i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1, config & 0xBF); /* run */ @@ -576,21 +649,15 @@ static struct lm90_data *lm90_update_device(struct device *dev) down(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) { - u8 oldh, newh; + u8 oldh, newh, l; dev_dbg(&client->dev, "Updating lm90 data.\n"); - data->temp8[0] = i2c_smbus_read_byte_data(client, - LM90_REG_R_LOCAL_TEMP); - data->temp8[1] = i2c_smbus_read_byte_data(client, - LM90_REG_R_LOCAL_LOW); - data->temp8[2] = i2c_smbus_read_byte_data(client, - LM90_REG_R_LOCAL_HIGH); - data->temp8[3] = i2c_smbus_read_byte_data(client, - LM90_REG_R_LOCAL_CRIT); - data->temp8[4] = i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_CRIT); - data->temp_hyst = i2c_smbus_read_byte_data(client, - LM90_REG_R_TCRIT_HYST); + lm90_read_reg(client, LM90_REG_R_LOCAL_TEMP, &data->temp8[0]); + lm90_read_reg(client, LM90_REG_R_LOCAL_LOW, &data->temp8[1]); + lm90_read_reg(client, LM90_REG_R_LOCAL_HIGH, &data->temp8[2]); + lm90_read_reg(client, LM90_REG_R_LOCAL_CRIT, &data->temp8[3]); + lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT, &data->temp8[4]); + lm90_read_reg(client, LM90_REG_R_TCRIT_HYST, &data->temp_hyst); /* * There is a trick here. We have to read two registers to @@ -606,36 +673,20 @@ static struct lm90_data *lm90_update_device(struct device *dev) * then we have a valid reading. Else we have to read the low * byte again, and now we believe we have a correct reading. */ - oldh = i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_TEMPH); - data->temp11[0] = i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_TEMPL); - newh = i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_TEMPH); - if (newh != oldh) { - data->temp11[0] = i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_TEMPL); -#ifdef DEBUG - oldh = i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_TEMPH); - /* oldh is actually newer */ - if (newh != oldh) - dev_warn(&client->dev, "Remote temperature may be " - "wrong.\n"); -#endif - } - data->temp11[0] |= (newh << 8); - - data->temp11[1] = (i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_LOWH) << 8) + - i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_LOWL); - data->temp11[2] = (i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_HIGHH) << 8) + - i2c_smbus_read_byte_data(client, - LM90_REG_R_REMOTE_HIGHL); - data->alarms = i2c_smbus_read_byte_data(client, - LM90_REG_R_STATUS); + if (lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPH, &oldh) == 0 + && lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPL, &l) == 0 + && lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPH, &newh) == 0 + && (newh == oldh + || lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPL, &l) == 0)) + data->temp11[0] = (newh << 8) | l; + + if (lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &newh) == 0 + && lm90_read_reg(client, LM90_REG_R_REMOTE_LOWL, &l) == 0) + data->temp11[1] = (newh << 8) | l; + if (lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH, &newh) == 0 + && lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL, &l) == 0) + data->temp11[2] = (newh << 8) | l; + lm90_read_reg(client, LM90_REG_R_STATUS, &data->alarms); data->last_updated = jiffies; data->valid = 1; diff --git a/drivers/hwmon/lm92.c b/drivers/hwmon/lm92.c index 647b7c7cd575..7a4b3701ed1a 100644 --- a/drivers/hwmon/lm92.c +++ b/drivers/hwmon/lm92.c @@ -300,11 +300,10 @@ static int lm92_detect(struct i2c_adapter *adapter, int address, int kind) | I2C_FUNC_SMBUS_WORD_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct lm92_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct lm92_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct lm92_data)); /* Fill in enough client fields so that we can read from the chip, which is required for identication */ diff --git a/drivers/hwmon/max1619.c b/drivers/hwmon/max1619.c index 16bf71f3a04d..6a82ffae1bfd 100644 --- a/drivers/hwmon/max1619.c +++ b/drivers/hwmon/max1619.c @@ -197,11 +197,10 @@ static int max1619_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct max1619_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct max1619_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct max1619_data)); /* The common I2C client data is placed right before the MAX1619-specific data. */ diff --git a/drivers/hwmon/pc87360.c b/drivers/hwmon/pc87360.c index cf2a35799c7c..17f745a23d04 100644 --- a/drivers/hwmon/pc87360.c +++ b/drivers/hwmon/pc87360.c @@ -754,9 +754,8 @@ static int pc87360_detect(struct i2c_adapter *adapter) const char *name = "pc87360"; int use_thermistors = 0; - if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL))) + if (!(data = kzalloc(sizeof(struct pc87360_data), GFP_KERNEL))) return -ENOMEM; - memset(data, 0x00, sizeof(struct pc87360_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/sis5595.c b/drivers/hwmon/sis5595.c index 21aa9a41f62c..9c6cadec1087 100644 --- a/drivers/hwmon/sis5595.c +++ b/drivers/hwmon/sis5595.c @@ -518,11 +518,10 @@ static int sis5595_detect(struct i2c_adapter *adapter) goto exit_release; } - if (!(data = kmalloc(sizeof(struct sis5595_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) { err = -ENOMEM; goto exit_release; } - memset(data, 0, sizeof(struct sis5595_data)); new_client = &data->client; new_client->addr = address; diff --git a/drivers/hwmon/smsc47b397.c b/drivers/hwmon/smsc47b397.c index 7fe71576dea4..2a3e21b5b6b4 100644 --- a/drivers/hwmon/smsc47b397.c +++ b/drivers/hwmon/smsc47b397.c @@ -244,11 +244,10 @@ static int smsc47b397_detect(struct i2c_adapter *adapter) return -EBUSY; } - if (!(data = kmalloc(sizeof(struct smsc47b397_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct smsc47b397_data), GFP_KERNEL))) { err = -ENOMEM; goto error_release; } - memset(data, 0x00, sizeof(struct smsc47b397_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); @@ -299,7 +298,7 @@ static int __init smsc47b397_find(unsigned short *addr) superio_enter(); id = superio_inb(SUPERIO_REG_DEVID); - if (id != 0x6f) { + if ((id != 0x6f) && (id != 0x81)) { superio_exit(); return -ENODEV; } @@ -310,8 +309,9 @@ static int __init smsc47b397_find(unsigned short *addr) *addr = (superio_inb(SUPERIO_REG_BASE_MSB) << 8) | superio_inb(SUPERIO_REG_BASE_LSB); - printk(KERN_INFO "smsc47b397: found SMSC LPC47B397-NC " - "(base address 0x%04x, revision %u)\n", *addr, rev); + printk(KERN_INFO "smsc47b397: found SMSC %s " + "(base address 0x%04x, revision %u)\n", + id == 0x81 ? "SCH5307-NS" : "LPC47B397-NC", *addr, rev); superio_exit(); return 0; diff --git a/drivers/hwmon/smsc47m1.c b/drivers/hwmon/smsc47m1.c index c9cc683eba4a..5905c1af88f2 100644 --- a/drivers/hwmon/smsc47m1.c +++ b/drivers/hwmon/smsc47m1.c @@ -3,7 +3,7 @@ for hardware monitoring Supports the SMSC LPC47B27x, LPC47M10x, LPC47M13x, LPC47M14x, - LPC47M15x and LPC47M192 Super-I/O chips. + LPC47M15x, LPC47M192 and LPC47M997 Super-I/O chips. Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com> Copyright (C) 2004 Jean Delvare <khali@linux-fr.org> @@ -356,6 +356,8 @@ static int __init smsc47m1_find(unsigned short *addr) * 0x5F) and LPC47B27x (device id 0x51) have fan control. * The LPC47M15x and LPC47M192 chips "with hardware monitoring block" * can do much more besides (device id 0x60). + * The LPC47M997 is undocumented, but seems to be compatible with + * the LPC47M192, and has the same device id. */ if (val == 0x51) printk(KERN_INFO "smsc47m1: Found SMSC LPC47B27x\n"); @@ -364,7 +366,8 @@ static int __init smsc47m1_find(unsigned short *addr) else if (val == 0x5F) printk(KERN_INFO "smsc47m1: Found SMSC LPC47M14x\n"); else if (val == 0x60) - printk(KERN_INFO "smsc47m1: Found SMSC LPC47M15x/LPC47M192\n"); + printk(KERN_INFO "smsc47m1: Found SMSC " + "LPC47M15x/LPC47M192/LPC47M997\n"); else { superio_exit(); return -ENODEV; @@ -396,11 +399,10 @@ static int smsc47m1_detect(struct i2c_adapter *adapter) return -EBUSY; } - if (!(data = kmalloc(sizeof(struct smsc47m1_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct smsc47m1_data), GFP_KERNEL))) { err = -ENOMEM; goto error_release; } - memset(data, 0x00, sizeof(struct smsc47m1_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/hwmon/via686a.c b/drivers/hwmon/via686a.c index 05ddc88e7dd2..6f696f897176 100644 --- a/drivers/hwmon/via686a.c +++ b/drivers/hwmon/via686a.c @@ -44,7 +44,7 @@ /* If force_addr is set to anything different from 0, we forcibly enable the device at the given address. */ -static unsigned short force_addr = 0; +static unsigned short force_addr; module_param(force_addr, ushort, 0); MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors"); @@ -198,7 +198,7 @@ static inline u8 FAN_TO_REG(long rpm, int div) but the function is very linear in the useful range (0-80 deg C), so we'll just use linear interpolation for 10-bit readings.) So, tempLUT is the temp at via register values 0-255: */ -static const long tempLUT[] = +static const s16 tempLUT[] = { -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519, -503, -487, -471, -456, -442, -428, -414, -400, -387, -375, -362, -350, -339, -327, -316, -305, -295, -285, -275, -265, @@ -270,7 +270,7 @@ static inline u8 TEMP_TO_REG(long val) } /* for 8-bit temperature hyst and over registers */ -#define TEMP_FROM_REG(val) (tempLUT[(val)] * 100) +#define TEMP_FROM_REG(val) ((long)tempLUT[val] * 100) /* for 10-bit temperature readings */ static inline long TEMP_FROM_REG10(u16 val) @@ -589,10 +589,8 @@ static int via686a_detect(struct i2c_adapter *adapter) u16 val; /* 8231 requires multiple of 256, we enforce that on 686 as well */ - if (force_addr) - address = force_addr & 0xFF00; - if (force_addr) { + address = force_addr & 0xFF00; dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n", address); if (PCIBIOS_SUCCESSFUL != @@ -603,11 +601,17 @@ static int via686a_detect(struct i2c_adapter *adapter) pci_read_config_word(s_bridge, VIA686A_ENABLE_REG, &val)) return -ENODEV; if (!(val & 0x0001)) { - dev_warn(&adapter->dev, "enabling sensors\n"); - if (PCIBIOS_SUCCESSFUL != - pci_write_config_word(s_bridge, VIA686A_ENABLE_REG, - val | 0x0001)) + if (force_addr) { + dev_info(&adapter->dev, "enabling sensors\n"); + if (PCIBIOS_SUCCESSFUL != + pci_write_config_word(s_bridge, VIA686A_ENABLE_REG, + val | 0x0001)) + return -ENODEV; + } else { + dev_warn(&adapter->dev, "sensors disabled - enable " + "with force_addr=0x%x\n", address); return -ENODEV; + } } /* Reserve the ISA region */ @@ -617,11 +621,10 @@ static int via686a_detect(struct i2c_adapter *adapter) return -ENODEV; } - if (!(data = kmalloc(sizeof(struct via686a_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct via686a_data), GFP_KERNEL))) { err = -ENOMEM; goto exit_release; } - memset(data, 0, sizeof(struct via686a_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); @@ -708,7 +711,6 @@ static int via686a_detach_client(struct i2c_client *client) return 0; } -/* Called when we have found a new VIA686A. Set limits, etc. */ static void via686a_init_client(struct i2c_client *client) { u8 reg; diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c index b60efe8f8b26..eee22a57e929 100644 --- a/drivers/hwmon/w83627ehf.c +++ b/drivers/hwmon/w83627ehf.c @@ -105,7 +105,9 @@ superio_exit(void) * ISA constants */ -#define REGION_LENGTH 8 +#define REGION_ALIGNMENT ~7 +#define REGION_OFFSET 5 +#define REGION_LENGTH 2 #define ADDR_REG_OFFSET 5 #define DATA_REG_OFFSET 6 @@ -673,16 +675,16 @@ static int w83627ehf_detect(struct i2c_adapter *adapter) struct w83627ehf_data *data; int i, err = 0; - if (!request_region(address, REGION_LENGTH, w83627ehf_driver.name)) { + if (!request_region(address + REGION_OFFSET, REGION_LENGTH, + w83627ehf_driver.name)) { err = -EBUSY; goto exit; } - if (!(data = kmalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) { err = -ENOMEM; goto exit_release; } - memset(data, 0, sizeof(struct w83627ehf_data)); client = &data->client; i2c_set_clientdata(client, data); @@ -762,7 +764,7 @@ exit_detach: exit_free: kfree(data); exit_release: - release_region(address, REGION_LENGTH); + release_region(address + REGION_OFFSET, REGION_LENGTH); exit: return err; } @@ -776,7 +778,7 @@ static int w83627ehf_detach_client(struct i2c_client *client) if ((err = i2c_detach_client(client))) return err; - release_region(client->addr, REGION_LENGTH); + release_region(client->addr + REGION_OFFSET, REGION_LENGTH); kfree(data); return 0; @@ -807,7 +809,7 @@ static int __init w83627ehf_find(int sioaddr, unsigned short *addr) superio_select(W83627EHF_LD_HWM); val = (superio_inb(SIO_REG_ADDR) << 8) | superio_inb(SIO_REG_ADDR + 1); - *addr = val & ~(REGION_LENGTH - 1); + *addr = val & REGION_ALIGNMENT; if (*addr == 0) { superio_exit(); return -ENODEV; diff --git a/drivers/hwmon/w83627hf.c b/drivers/hwmon/w83627hf.c index 3479dc5208e2..70ef926c3bd8 100644 --- a/drivers/hwmon/w83627hf.c +++ b/drivers/hwmon/w83627hf.c @@ -142,10 +142,14 @@ superio_exit(void) #define WINB_BASE_REG 0x60 /* Constants specified below */ -/* Length of ISA address segment */ -#define WINB_EXTENT 8 +/* Alignment of the base address */ +#define WINB_ALIGNMENT ~7 -/* Where are the ISA address/data registers relative to the base address */ +/* Offset & size of I/O region we are interested in */ +#define WINB_REGION_OFFSET 5 +#define WINB_REGION_SIZE 2 + +/* Where are the sensors address/data registers relative to the base address */ #define W83781D_ADDR_REG_OFFSET 5 #define W83781D_DATA_REG_OFFSET 6 @@ -197,7 +201,6 @@ superio_exit(void) #define W83627HF_REG_PWM1 0x5A #define W83627HF_REG_PWM2 0x5B -#define W83627HF_REG_PWMCLK12 0x5C #define W83627THF_REG_PWM1 0x01 /* 697HF and 637HF too */ #define W83627THF_REG_PWM2 0x03 /* 697HF and 637HF too */ @@ -981,7 +984,7 @@ static int __init w83627hf_find(int sioaddr, unsigned short *addr) superio_select(W83627HF_LD_HWM); val = (superio_inb(WINB_BASE_REG) << 8) | superio_inb(WINB_BASE_REG + 1); - *addr = val & ~(WINB_EXTENT - 1); + *addr = val & WINB_ALIGNMENT; if (*addr == 0 && force_addr == 0) { superio_exit(); return -ENODEV; @@ -1000,9 +1003,10 @@ static int w83627hf_detect(struct i2c_adapter *adapter) const char *client_name = ""; if(force_addr) - address = force_addr & ~(WINB_EXTENT - 1); + address = force_addr & WINB_ALIGNMENT; - if (!request_region(address, WINB_EXTENT, w83627hf_driver.name)) { + if (!request_region(address + WINB_REGION_OFFSET, WINB_REGION_SIZE, + w83627hf_driver.name)) { err = -EBUSY; goto ERROR0; } @@ -1041,11 +1045,10 @@ static int w83627hf_detect(struct i2c_adapter *adapter) client structure, even though we cannot fill it completely yet. But it allows us to access w83627hf_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct w83627hf_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct w83627hf_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR1; } - memset(data, 0, sizeof(struct w83627hf_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); @@ -1148,7 +1151,7 @@ static int w83627hf_detect(struct i2c_adapter *adapter) ERROR2: kfree(data); ERROR1: - release_region(address, WINB_EXTENT); + release_region(address + WINB_REGION_OFFSET, WINB_REGION_SIZE); ERROR0: return err; } @@ -1163,7 +1166,7 @@ static int w83627hf_detach_client(struct i2c_client *client) if ((err = i2c_detach_client(client))) return err; - release_region(client->addr, WINB_EXTENT); + release_region(client->addr + WINB_REGION_OFFSET, WINB_REGION_SIZE); kfree(data); return 0; @@ -1275,7 +1278,6 @@ static int w83627hf_write_value(struct i2c_client *client, u16 reg, u16 value) return 0; } -/* Called when we have found a new W83781D. It should set limits, etc. */ static void w83627hf_init_client(struct i2c_client *client) { struct w83627hf_data *data = i2c_get_clientdata(client); @@ -1369,12 +1371,6 @@ static void w83627hf_init_client(struct i2c_client *client) } } - if (type == w83627hf) { - /* enable PWM2 control (can't hurt since PWM reg - should have been reset to 0xff) */ - w83627hf_write_value(client, W83627HF_REG_PWMCLK12, - 0x19); - } /* enable comparator mode for temp2 and temp3 so alarm indication will work correctly */ i = w83627hf_read_value(client, W83781D_REG_IRQ); diff --git a/drivers/hwmon/w83781d.c b/drivers/hwmon/w83781d.c index 4c43337ca780..9265f32122fa 100644 --- a/drivers/hwmon/w83781d.c +++ b/drivers/hwmon/w83781d.c @@ -889,12 +889,11 @@ w83781d_detect_subclients(struct i2c_adapter *adapter, int address, int kind, const char *client_name = ""; struct w83781d_data *data = i2c_get_clientdata(new_client); - data->lm75[0] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); if (!(data->lm75[0])) { err = -ENOMEM; goto ERROR_SC_0; } - memset(data->lm75[0], 0x00, sizeof (struct i2c_client)); id = i2c_adapter_id(adapter); @@ -919,13 +918,11 @@ w83781d_detect_subclients(struct i2c_adapter *adapter, int address, int kind, } if (kind != w83783s) { - - data->lm75[1] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); if (!(data->lm75[1])) { err = -ENOMEM; goto ERROR_SC_1; } - memset(data->lm75[1], 0x0, sizeof(struct i2c_client)); if (force_subclients[0] == id && force_subclients[1] == address) { @@ -1064,11 +1061,10 @@ w83781d_detect(struct i2c_adapter *adapter, int address, int kind) client structure, even though we cannot fill it completely yet. But it allows us to access w83781d_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct w83781d_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR1; } - memset(data, 0, sizeof(struct w83781d_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); @@ -1451,7 +1447,6 @@ w83781d_write_value(struct i2c_client *client, u16 reg, u16 value) return 0; } -/* Called when we have found a new W83781D. It should set limits, etc. */ static void w83781d_init_client(struct i2c_client *client) { diff --git a/drivers/hwmon/w83792d.c b/drivers/hwmon/w83792d.c index ba0c28015f6a..4be59dbb78c4 100644 --- a/drivers/hwmon/w83792d.c +++ b/drivers/hwmon/w83792d.c @@ -1086,11 +1086,10 @@ w83792d_create_subclient(struct i2c_adapter *adapter, int err; struct i2c_client *sub_client; - (*sub_cli) = sub_client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + (*sub_cli) = sub_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); if (!(sub_client)) { return -ENOMEM; } - memset(sub_client, 0x00, sizeof(struct i2c_client)); sub_client->addr = 0x48 + addr; i2c_set_clientdata(sub_client, NULL); sub_client->adapter = adapter; @@ -1184,11 +1183,10 @@ w83792d_detect(struct i2c_adapter *adapter, int address, int kind) client structure, even though we cannot fill it completely yet. But it allows us to access w83792d_{read,write}_value. */ - if (!(data = kmalloc(sizeof(struct w83792d_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR0; } - memset(data, 0, sizeof(struct w83792d_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); @@ -1429,7 +1427,6 @@ w83792d_write_value(struct i2c_client *client, u8 reg, u8 value) return 0; } -/* Called when we have found a new W83792D. It should set limits, etc. */ static void w83792d_init_client(struct i2c_client *client) { diff --git a/drivers/hwmon/w83l785ts.c b/drivers/hwmon/w83l785ts.c index 133e34ab1d0a..f495b6378668 100644 --- a/drivers/hwmon/w83l785ts.c +++ b/drivers/hwmon/w83l785ts.c @@ -37,6 +37,7 @@ #include <linux/jiffies.h> #include <linux/i2c.h> #include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> #include <linux/err.h> /* How many retries on register read error */ @@ -73,7 +74,7 @@ I2C_CLIENT_INSMOD_1(w83l785ts); * The W83L785TS-S uses signed 8-bit values. */ -#define TEMP_FROM_REG(val) ((val & 0x80 ? val-0x100 : val) * 1000) +#define TEMP_FROM_REG(val) ((val) * 1000) /* * Functions declaration @@ -111,27 +112,24 @@ struct w83l785ts_data { unsigned long last_updated; /* in jiffies */ /* registers values */ - u8 temp, temp_over; + s8 temp[2]; /* 0: input + 1: critical limit */ }; /* * Sysfs stuff */ -static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, + char *buf) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct w83l785ts_data *data = w83l785ts_update_device(dev); - return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); + return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index])); } -static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct w83l785ts_data *data = w83l785ts_update_device(dev); - return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); -} - -static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); -static DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_over, NULL); +static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); +static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp, NULL, 1); /* * Real code @@ -158,12 +156,10 @@ static int w83l785ts_detect(struct i2c_adapter *adapter, int address, int kind) if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto exit; - if (!(data = kmalloc(sizeof(struct w83l785ts_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct w83l785ts_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct w83l785ts_data)); - /* The common I2C client data is placed right before the * W83L785TS-specific data. */ @@ -228,7 +224,7 @@ static int w83l785ts_detect(struct i2c_adapter *adapter, int address, int kind) init_MUTEX(&data->update_lock); /* Default values in case the first read fails (unlikely). */ - data->temp_over = data->temp = 0; + data->temp[1] = data->temp[0] = 0; /* Tell the I2C layer a new client has arrived. */ if ((err = i2c_attach_client(new_client))) @@ -246,8 +242,10 @@ static int w83l785ts_detect(struct i2c_adapter *adapter, int address, int kind) goto exit_detach; } - device_create_file(&new_client->dev, &dev_attr_temp1_input); - device_create_file(&new_client->dev, &dev_attr_temp1_max); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp1_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_temp1_max.dev_attr); return 0; @@ -305,10 +303,10 @@ static struct w83l785ts_data *w83l785ts_update_device(struct device *dev) if (!data->valid || time_after(jiffies, data->last_updated + HZ * 2)) { dev_dbg(&client->dev, "Updating w83l785ts data.\n"); - data->temp = w83l785ts_read_value(client, - W83L785TS_REG_TEMP, data->temp); - data->temp_over = w83l785ts_read_value(client, - W83L785TS_REG_TEMP_OVER, data->temp_over); + data->temp[0] = w83l785ts_read_value(client, + W83L785TS_REG_TEMP, data->temp[0]); + data->temp[1] = w83l785ts_read_value(client, + W83L785TS_REG_TEMP_OVER, data->temp[1]); data->last_updated = jiffies; data->valid = 1; diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c index beb10edfe9c1..82946acab4c7 100644 --- a/drivers/i2c/algos/i2c-algo-pca.c +++ b/drivers/i2c/algos/i2c-algo-pca.c @@ -34,7 +34,7 @@ #define DEB2(fmt, args...) do { if (i2c_debug>=2) printk(fmt, ## args); } while(0) #define DEB3(fmt, args...) do { if (i2c_debug>=3) printk(fmt, ## args); } while(0) -static int i2c_debug=0; +static int i2c_debug; #define pca_outw(adap, reg, val) adap->write_byte(adap, reg, val) #define pca_inw(adap, reg) adap->read_byte(adap, reg) diff --git a/drivers/i2c/algos/i2c-algo-sibyte.c b/drivers/i2c/algos/i2c-algo-sibyte.c index 8ed5ad12552f..938848ae162d 100644 --- a/drivers/i2c/algos/i2c-algo-sibyte.c +++ b/drivers/i2c/algos/i2c-algo-sibyte.c @@ -42,7 +42,7 @@ /* module parameters: */ -static int bit_scan=0; /* have a look at what's hanging 'round */ +static int bit_scan; /* have a look at what's hanging 'round */ static int smbus_xfer(struct i2c_adapter *i2c_adap, u16 addr, diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index 3badfec75b1c..4010fe92e72b 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -135,11 +135,12 @@ config I2C_I810 help If you say yes to this option, support will be included for the Intel 810/815 family of mainboard I2C interfaces. Specifically, the - following versions of the chipset is supported: + following versions of the chipset are supported: i810AA i810AB i810E i815 + i845G This driver can also be built as a module. If so, the module will be called i2c-i810. diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c index f021acd2674e..ba90f5140af6 100644 --- a/drivers/i2c/busses/i2c-ali1535.c +++ b/drivers/i2c/busses/i2c-ali1535.c @@ -134,7 +134,7 @@ /* -> Read = 1 */ #define ALI1535_SMBIO_EN 0x04 /* SMB I/O Space enable */ - +static struct pci_driver ali1535_driver; static unsigned short ali1535_smba; static DECLARE_MUTEX(i2c_ali1535_sem); @@ -162,7 +162,8 @@ static int ali1535_setup(struct pci_dev *dev) goto exit; } - if (!request_region(ali1535_smba, ALI1535_SMB_IOSIZE, "ali1535-smb")) { + if (!request_region(ali1535_smba, ALI1535_SMB_IOSIZE, + ali1535_driver.name)) { dev_err(&dev->dev, "ALI1535_smb region 0x%x already in use!\n", ali1535_smba); goto exit; @@ -480,7 +481,6 @@ static struct i2c_adapter ali1535_adapter = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, .algo = &smbus_algorithm, - .name = "unset", }; static struct pci_device_id ali1535_ids[] = { @@ -513,6 +513,7 @@ static void __devexit ali1535_remove(struct pci_dev *dev) } static struct pci_driver ali1535_driver = { + .owner = THIS_MODULE, .name = "ali1535_smbus", .id_table = ali1535_ids, .probe = ali1535_probe, diff --git a/drivers/i2c/busses/i2c-ali1563.c b/drivers/i2c/busses/i2c-ali1563.c index 86947504aea1..f1a62d892425 100644 --- a/drivers/i2c/busses/i2c-ali1563.c +++ b/drivers/i2c/busses/i2c-ali1563.c @@ -60,6 +60,7 @@ #define HST_CNTL2_SIZEMASK 0x38 +static struct pci_driver ali1563_pci_driver; static unsigned short ali1563_smba; static int ali1563_transaction(struct i2c_adapter * a, int size) @@ -350,7 +351,8 @@ static int __devinit ali1563_setup(struct pci_dev * dev) dev_warn(&dev->dev,"ali1563_smba Uninitialized\n"); goto Err; } - if (!request_region(ali1563_smba,ALI1563_SMB_IOSIZE,"i2c-ali1563")) { + if (!request_region(ali1563_smba, ALI1563_SMB_IOSIZE, + ali1563_pci_driver.name)) { dev_warn(&dev->dev,"Could not allocate I/O space"); goto Err; } @@ -406,7 +408,8 @@ static struct pci_device_id __devinitdata ali1563_id_table[] = { MODULE_DEVICE_TABLE (pci, ali1563_id_table); static struct pci_driver ali1563_pci_driver = { - .name = "ali1563_i2c", + .owner = THIS_MODULE, + .name = "ali1563_smbus", .id_table = ali1563_id_table, .probe = ali1563_probe, .remove = __devexit_p(ali1563_remove), diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c index b3f50bff39a0..400b08ed4299 100644 --- a/drivers/i2c/busses/i2c-ali15x3.c +++ b/drivers/i2c/busses/i2c-ali15x3.c @@ -125,12 +125,13 @@ /* If force_addr is set to anything different from 0, we forcibly enable the device at the given address. */ -static u16 force_addr = 0; +static u16 force_addr; module_param(force_addr, ushort, 0); MODULE_PARM_DESC(force_addr, "Initialize the base address of the i2c controller"); -static unsigned short ali15x3_smba = 0; +static struct pci_driver ali15x3_driver; +static unsigned short ali15x3_smba; static int ali15x3_setup(struct pci_dev *ALI15X3_dev) { @@ -166,7 +167,8 @@ static int ali15x3_setup(struct pci_dev *ALI15X3_dev) if(force_addr) ali15x3_smba = force_addr & ~(ALI15X3_SMB_IOSIZE - 1); - if (!request_region(ali15x3_smba, ALI15X3_SMB_IOSIZE, "ali15x3-smb")) { + if (!request_region(ali15x3_smba, ALI15X3_SMB_IOSIZE, + ali15x3_driver.name)) { dev_err(&ALI15X3_dev->dev, "ALI15X3_smb region 0x%x already in use!\n", ali15x3_smba); @@ -470,7 +472,6 @@ static struct i2c_adapter ali15x3_adapter = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, .algo = &smbus_algorithm, - .name = "unset", }; static struct pci_device_id ali15x3_ids[] = { @@ -503,6 +504,7 @@ static void __devexit ali15x3_remove(struct pci_dev *dev) } static struct pci_driver ali15x3_driver = { + .owner = THIS_MODULE, .name = "ali15x3_smbus", .id_table = ali15x3_ids, .probe = ali15x3_probe, diff --git a/drivers/i2c/busses/i2c-amd756-s4882.c b/drivers/i2c/busses/i2c-amd756-s4882.c index 4e553e8c5cba..f51ab652300a 100644 --- a/drivers/i2c/busses/i2c-amd756-s4882.c +++ b/drivers/i2c/busses/i2c-amd756-s4882.c @@ -169,12 +169,12 @@ static int __init amd756_s4882_init(void) init_MUTEX(&amd756_lock); /* Define the 5 virtual adapters and algorithms structures */ - if (!(s4882_adapter = kmalloc(5 * sizeof(struct i2c_adapter), + if (!(s4882_adapter = kzalloc(5 * sizeof(struct i2c_adapter), GFP_KERNEL))) { error = -ENOMEM; goto ERROR1; } - if (!(s4882_algo = kmalloc(5 * sizeof(struct i2c_algorithm), + if (!(s4882_algo = kzalloc(5 * sizeof(struct i2c_algorithm), GFP_KERNEL))) { error = -ENOMEM; goto ERROR2; diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c index 6ad0603384b8..de035d137c3f 100644 --- a/drivers/i2c/busses/i2c-amd756.c +++ b/drivers/i2c/busses/i2c-amd756.c @@ -85,8 +85,8 @@ #define AMD756_PROCESS_CALL 0x04 #define AMD756_BLOCK_DATA 0x05 - -static unsigned short amd756_ioport = 0; +static struct pci_driver amd756_driver; +static unsigned short amd756_ioport; /* SMBUS event = I/O 28-29 bit 11 @@ -303,7 +303,6 @@ struct i2c_adapter amd756_smbus = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, .algo = &smbus_algorithm, - .name = "unset", }; enum chiptype { AMD756, AMD766, AMD768, NFORCE, AMD8111 }; @@ -365,7 +364,7 @@ static int __devinit amd756_probe(struct pci_dev *pdev, amd756_ioport += SMB_ADDR_OFFSET; } - if (!request_region(amd756_ioport, SMB_IOSIZE, "amd756-smbus")) { + if (!request_region(amd756_ioport, SMB_IOSIZE, amd756_driver.name)) { dev_err(&pdev->dev, "SMB region 0x%x already in use!\n", amd756_ioport); return -ENODEV; @@ -402,6 +401,7 @@ static void __devexit amd756_remove(struct pci_dev *dev) } static struct pci_driver amd756_driver = { + .owner = THIS_MODULE, .name = "amd756_smbus", .id_table = amd756_ids, .probe = amd756_probe, diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c index 45ea24ba14d5..f3b79a68dbec 100644 --- a/drivers/i2c/busses/i2c-amd8111.c +++ b/drivers/i2c/busses/i2c-amd8111.c @@ -30,6 +30,8 @@ struct amd_smbus { int size; }; +static struct pci_driver amd8111_driver; + /* * AMD PCI control registers definitions. */ @@ -242,7 +244,6 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr, unsigned short fl break; case I2C_SMBUS_BLOCK_PROC_CALL: - protocol |= pec; len = min_t(u8, data->block[0], 31); amd_ec_write(smbus, AMD_SMB_CMD, command); amd_ec_write(smbus, AMD_SMB_BCNT, len); @@ -252,13 +253,6 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr, unsigned short fl read_write = I2C_SMBUS_READ; break; - case I2C_SMBUS_WORD_DATA_PEC: - case I2C_SMBUS_BLOCK_DATA_PEC: - case I2C_SMBUS_PROC_CALL_PEC: - case I2C_SMBUS_BLOCK_PROC_CALL_PEC: - dev_warn(&adap->dev, "Unexpected software PEC transaction %d\n.", size); - return -1; - default: dev_warn(&adap->dev, "Unsupported transaction %d\n", size); return -1; @@ -343,16 +337,15 @@ static int __devinit amd8111_probe(struct pci_dev *dev, const struct pci_device_ if (~pci_resource_flags(dev, 0) & IORESOURCE_IO) return -ENODEV; - smbus = kmalloc(sizeof(struct amd_smbus), GFP_KERNEL); + smbus = kzalloc(sizeof(struct amd_smbus), GFP_KERNEL); if (!smbus) return -ENOMEM; - memset(smbus, 0, sizeof(struct amd_smbus)); smbus->dev = dev; smbus->base = pci_resource_start(dev, 0); smbus->size = pci_resource_len(dev, 0); - if (!request_region(smbus->base, smbus->size, "amd8111 SMBus 2.0")) + if (!request_region(smbus->base, smbus->size, amd8111_driver.name)) goto out_kfree; smbus->adapter.owner = THIS_MODULE; @@ -391,6 +384,7 @@ static void __devexit amd8111_remove(struct pci_dev *dev) } static struct pci_driver amd8111_driver = { + .owner = THIS_MODULE, .name = "amd8111_smbus2", .id_table = amd8111_ids, .probe = amd8111_probe, diff --git a/drivers/i2c/busses/i2c-elektor.c b/drivers/i2c/busses/i2c-elektor.c index 6930b660e508..59f8308c2356 100644 --- a/drivers/i2c/busses/i2c-elektor.c +++ b/drivers/i2c/busses/i2c-elektor.c @@ -22,7 +22,7 @@ /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even Frodo Looijaard <frodol@dds.nl> */ -/* Partialy rewriten by Oleg I. Vdovikin for mmapped support of +/* Partialy rewriten by Oleg I. Vdovikin for mmapped support of for Alpha Processor Inc. UP-2000(+) boards */ #include <linux/kernel.h> @@ -46,12 +46,14 @@ #define DEFAULT_BASE 0x330 static int base; +static u8 __iomem *base_iomem; + static int irq; static int clock = 0x1c; static int own = 0x55; static int mmapped; -/* vdovikin: removed static struct i2c_pcf_isa gpi; code - +/* vdovikin: removed static struct i2c_pcf_isa gpi; code - this module in real supports only one device, due to missing arguments in some functions, called from the algo-pcf module. Sometimes it's need to be rewriten - but for now just remove this for simpler reading */ @@ -60,40 +62,33 @@ static wait_queue_head_t pcf_wait; static int pcf_pending; static spinlock_t lock; +static struct i2c_adapter pcf_isa_ops; + /* ----- local functions ---------------------------------------------- */ static void pcf_isa_setbyte(void *data, int ctl, int val) { - int address = ctl ? (base + 1) : base; + u8 __iomem *address = ctl ? (base_iomem + 1) : base_iomem; /* enable irq if any specified for serial operation */ if (ctl && irq && (val & I2C_PCF_ESO)) { val |= I2C_PCF_ENI; } - pr_debug("i2c-elektor: Write 0x%X 0x%02X\n", address, val & 255); - - switch (mmapped) { - case 0: /* regular I/O */ - outb(val, address); - break; - case 2: /* double mapped I/O needed for UP2000 board, - I don't know why this... */ - writeb(val, (void *)address); - /* fall */ - case 1: /* memory mapped I/O */ - writeb(val, (void *)address); - break; - } + pr_debug("%s: Write %p 0x%02X\n", pcf_isa_ops.name, address, val); + iowrite8(val, address); +#ifdef __alpha__ + /* API UP2000 needs some hardware fudging to make the write stick */ + iowrite8(val, address); +#endif } static int pcf_isa_getbyte(void *data, int ctl) { - int address = ctl ? (base + 1) : base; - int val = mmapped ? readb((void *)address) : inb(address); - - pr_debug("i2c-elektor: Read 0x%X 0x%02X\n", address, val); + u8 __iomem *address = ctl ? (base_iomem + 1) : base_iomem; + int val = ioread8(address); + pr_debug("%s: Read %p 0x%02X\n", pcf_isa_ops.name, address, val); return (val); } @@ -149,16 +144,40 @@ static int pcf_isa_init(void) { spin_lock_init(&lock); if (!mmapped) { - if (!request_region(base, 2, "i2c (isa bus adapter)")) { - printk(KERN_ERR - "i2c-elektor: requested I/O region (0x%X:2) " - "is in use.\n", base); + if (!request_region(base, 2, pcf_isa_ops.name)) { + printk(KERN_ERR "%s: requested I/O region (%#x:2) is " + "in use\n", pcf_isa_ops.name, base); + return -ENODEV; + } + base_iomem = ioport_map(base, 2); + if (!base_iomem) { + printk(KERN_ERR "%s: remap of I/O region %#x failed\n", + pcf_isa_ops.name, base); + release_region(base, 2); + return -ENODEV; + } + } else { + if (!request_mem_region(base, 2, pcf_isa_ops.name)) { + printk(KERN_ERR "%s: requested memory region (%#x:2) " + "is in use\n", pcf_isa_ops.name, base); + return -ENODEV; + } + base_iomem = ioremap(base, 2); + if (base_iomem == NULL) { + printk(KERN_ERR "%s: remap of memory region %#x " + "failed\n", pcf_isa_ops.name, base); + release_mem_region(base, 2); return -ENODEV; } } + pr_debug("%s: registers %#x remapped to %p\n", pcf_isa_ops.name, base, + base_iomem); + if (irq > 0) { - if (request_irq(irq, pcf_isa_handler, 0, "PCF8584", NULL) < 0) { - printk(KERN_ERR "i2c-elektor: Request irq%d failed\n", irq); + if (request_irq(irq, pcf_isa_handler, 0, pcf_isa_ops.name, + NULL) < 0) { + printk(KERN_ERR "%s: Request irq%d failed\n", + pcf_isa_ops.name, irq); irq = 0; } else enable_irq(irq); @@ -186,47 +205,49 @@ static struct i2c_adapter pcf_isa_ops = { .class = I2C_CLASS_HWMON, .id = I2C_HW_P_ELEK, .algo_data = &pcf_isa_data, - .name = "PCF8584 ISA adapter", + .name = "i2c-elektor", }; -static int __init i2c_pcfisa_init(void) +static int __init i2c_pcfisa_init(void) { #ifdef __alpha__ - /* check to see we have memory mapped PCF8584 connected to the + /* check to see we have memory mapped PCF8584 connected to the Cypress cy82c693 PCI-ISA bridge as on UP2000 board */ if (base == 0) { struct pci_dev *cy693_dev; - - cy693_dev = pci_get_device(PCI_VENDOR_ID_CONTAQ, + + cy693_dev = pci_get_device(PCI_VENDOR_ID_CONTAQ, PCI_DEVICE_ID_CONTAQ_82C693, NULL); if (cy693_dev) { - char config; + unsigned char config; /* yeap, we've found cypress, let's check config */ if (!pci_read_config_byte(cy693_dev, 0x47, &config)) { - - pr_debug("i2c-elektor: found cy82c693, config register 0x47 = 0x%02x.\n", config); + + pr_debug("%s: found cy82c693, config " + "register 0x47 = 0x%02x\n", + pcf_isa_ops.name, config); /* UP2000 board has this register set to 0xe1, - but the most significant bit as seems can be + but the most significant bit as seems can be reset during the proper initialisation - sequence if guys from API decides to do that - (so, we can even enable Tsunami Pchip - window for the upper 1 Gb) */ + sequence if guys from API decides to do that + (so, we can even enable Tsunami Pchip + window for the upper 1 Gb) */ /* so just check for ROMCS at 0xe0000, - ROMCS enabled for writes + ROMCS enabled for writes and external XD Bus buffer in use. */ if ((config & 0x7f) == 0x61) { /* seems to be UP2000 like board */ base = 0xe0000; - /* I don't know why we need to - write twice */ - mmapped = 2; - /* UP2000 drives ISA with + mmapped = 1; + /* UP2000 drives ISA with 8.25 MHz (PCI/4) clock (this can be read from cypress) */ clock = I2C_PCF_CLK | I2C_PCF_TRNS90; - printk(KERN_INFO "i2c-elektor: found API UP2000 like board, will probe PCF8584 later.\n"); + pr_info("%s: found API UP2000 like " + "board, will probe PCF8584 " + "later\n", pcf_isa_ops.name); } } pci_dev_put(cy693_dev); @@ -236,12 +257,11 @@ static int __init i2c_pcfisa_init(void) /* sanity checks for mmapped I/O */ if (mmapped && base < 0xc8000) { - printk(KERN_ERR "i2c-elektor: incorrect base address (0x%0X) specified for mmapped I/O.\n", base); + printk(KERN_ERR "%s: incorrect base address (%#x) specified " + "for mmapped I/O\n", pcf_isa_ops.name, base); return -ENODEV; } - printk(KERN_INFO "i2c-elektor: i2c pcf8584-isa adapter driver\n"); - if (base == 0) { base = DEFAULT_BASE; } @@ -251,8 +271,8 @@ static int __init i2c_pcfisa_init(void) return -ENODEV; if (i2c_pcf_add_bus(&pcf_isa_ops) < 0) goto fail; - - printk(KERN_ERR "i2c-elektor: found device at %#x.\n", base); + + dev_info(&pcf_isa_ops.dev, "found device at %#x\n", base); return 0; @@ -262,8 +282,13 @@ static int __init i2c_pcfisa_init(void) free_irq(irq, NULL); } - if (!mmapped) - release_region(base , 2); + if (!mmapped) { + ioport_unmap(base_iomem); + release_region(base, 2); + } else { + iounmap(base_iomem); + release_mem_region(base, 2); + } return -ENODEV; } @@ -276,8 +301,13 @@ static void i2c_pcfisa_exit(void) free_irq(irq, NULL); } - if (!mmapped) - release_region(base , 2); + if (!mmapped) { + ioport_unmap(base_iomem); + release_region(base, 2); + } else { + iounmap(base_iomem); + release_mem_region(base, 2); + } } MODULE_AUTHOR("Hans Berglund <hb@spacetec.no>"); diff --git a/drivers/i2c/busses/i2c-hydra.c b/drivers/i2c/busses/i2c-hydra.c index e0cb3b0f92fa..1b5354e24bf5 100644 --- a/drivers/i2c/busses/i2c-hydra.c +++ b/drivers/i2c/busses/i2c-hydra.c @@ -155,6 +155,7 @@ static void __devexit hydra_remove(struct pci_dev *dev) static struct pci_driver hydra_driver = { + .owner = THIS_MODULE, .name = "hydra_smbus", .id_table = hydra_ids, .probe = hydra_probe, diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 709beab76609..4f63195069da 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -52,10 +52,6 @@ #include <linux/i2c.h> #include <asm/io.h> -#ifdef I2C_FUNC_SMBUS_BLOCK_DATA_PEC -#define HAVE_PEC -#endif - /* I801 SMBus address offsets */ #define SMBHSTSTS (0 + i801_smba) #define SMBHSTCNT (2 + i801_smba) @@ -106,10 +102,11 @@ MODULE_PARM_DESC(force_addr, "EXTREMELY DANGEROUS!"); static int i801_transaction(void); -static int i801_block_transaction(union i2c_smbus_data *data, - char read_write, int command); +static int i801_block_transaction(union i2c_smbus_data *data, char read_write, + int command, int hwpec); static unsigned short i801_smba; +static struct pci_driver i801_driver; static struct pci_dev *I801_dev; static int isich4; @@ -143,7 +140,7 @@ static int i801_setup(struct pci_dev *dev) } } - if (!request_region(i801_smba, (isich4 ? 16 : 8), "i801-smbus")) { + if (!request_region(i801_smba, (isich4 ? 16 : 8), i801_driver.name)) { dev_err(&dev->dev, "I801_smb region 0x%x already in use!\n", i801_smba); error_return = -EBUSY; @@ -252,7 +249,7 @@ static int i801_transaction(void) /* All-inclusive block transaction function */ static int i801_block_transaction(union i2c_smbus_data *data, char read_write, - int command) + int command, int hwpec) { int i, len; int smbcmd; @@ -391,8 +388,7 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write, goto END; } -#ifdef HAVE_PEC - if(isich4 && command == I2C_SMBUS_BLOCK_DATA_PEC) { + if (hwpec) { /* wait for INTR bit as advised by Intel */ timeout = 0; do { @@ -406,7 +402,6 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write, } outb_p(temp, SMBHSTSTS); } -#endif result = 0; END: if (command == I2C_SMBUS_I2C_BLOCK_DATA) { @@ -421,14 +416,13 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, unsigned short flags, char read_write, u8 command, int size, union i2c_smbus_data * data) { - int hwpec = 0; + int hwpec; int block = 0; int ret, xact = 0; -#ifdef HAVE_PEC - if(isich4) - hwpec = (flags & I2C_CLIENT_PEC) != 0; -#endif + hwpec = isich4 && (flags & I2C_CLIENT_PEC) + && size != I2C_SMBUS_QUICK + && size != I2C_SMBUS_I2C_BLOCK_DATA; switch (size) { case I2C_SMBUS_QUICK: @@ -463,11 +457,6 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, break; case I2C_SMBUS_BLOCK_DATA: case I2C_SMBUS_I2C_BLOCK_DATA: -#ifdef HAVE_PEC - case I2C_SMBUS_BLOCK_DATA_PEC: - if(hwpec && size == I2C_SMBUS_BLOCK_DATA) - size = I2C_SMBUS_BLOCK_DATA_PEC; -#endif outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), SMBHSTADD); outb_p(command, SMBHSTCMD); @@ -479,27 +468,18 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, return -1; } -#ifdef HAVE_PEC - if(isich4 && hwpec) { - if(size != I2C_SMBUS_QUICK && - size != I2C_SMBUS_I2C_BLOCK_DATA) - outb_p(1, SMBAUXCTL); /* enable HW PEC */ - } -#endif + if (hwpec) + outb_p(1, SMBAUXCTL); /* enable hardware PEC */ + if(block) - ret = i801_block_transaction(data, read_write, size); + ret = i801_block_transaction(data, read_write, size, hwpec); else { outb_p(xact | ENABLE_INT9, SMBHSTCNT); ret = i801_transaction(); } -#ifdef HAVE_PEC - if(isich4 && hwpec) { - if(size != I2C_SMBUS_QUICK && - size != I2C_SMBUS_I2C_BLOCK_DATA) - outb_p(0, SMBAUXCTL); - } -#endif + if (hwpec) + outb_p(0, SMBAUXCTL); /* disable hardware PEC */ if(block) return ret; @@ -526,12 +506,7 @@ static u32 i801_func(struct i2c_adapter *adapter) return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK -#ifdef HAVE_PEC - | (isich4 ? I2C_FUNC_SMBUS_BLOCK_DATA_PEC | - I2C_FUNC_SMBUS_HWPEC_CALC - : 0) -#endif - ; + | (isich4 ? I2C_FUNC_SMBUS_HWPEC_CALC : 0); } static struct i2c_algorithm smbus_algorithm = { @@ -543,7 +518,6 @@ static struct i2c_adapter i801_adapter = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, .algo = &smbus_algorithm, - .name = "unset", }; static struct pci_device_id i801_ids[] = { @@ -586,6 +560,7 @@ static void __devexit i801_remove(struct pci_dev *dev) } static struct pci_driver i801_driver = { + .owner = THIS_MODULE, .name = "i801_smbus", .id_table = i801_ids, .probe = i801_probe, diff --git a/drivers/i2c/busses/i2c-i810.c b/drivers/i2c/busses/i2c-i810.c index 0ff7016e0629..52bc30593bd7 100644 --- a/drivers/i2c/busses/i2c-i810.c +++ b/drivers/i2c/busses/i2c-i810.c @@ -32,6 +32,7 @@ i810AB 7123 i810E 7125 i815 1132 + i845G 2562 */ #include <linux/kernel.h> @@ -232,6 +233,7 @@ static void __devexit i810_remove(struct pci_dev *dev) } static struct pci_driver i810_driver = { + .owner = THIS_MODULE, .name = "i810_smbus", .id_table = i810_ids, .probe = i810_probe, diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c index a3ed9590f028..1a587253d716 100644 --- a/drivers/i2c/busses/i2c-ibm_iic.c +++ b/drivers/i2c/busses/i2c-ibm_iic.c @@ -672,13 +672,12 @@ static int __devinit iic_probe(struct ocp_device *ocp){ printk(KERN_WARNING"ibm-iic%d: missing additional data!\n", ocp->def->index); - if (!(dev = kmalloc(sizeof(*dev), GFP_KERNEL))){ + if (!(dev = kzalloc(sizeof(*dev), GFP_KERNEL))) { printk(KERN_CRIT "ibm-iic%d: failed to allocate device data\n", ocp->def->index); return -ENOMEM; } - memset(dev, 0, sizeof(*dev)); dev->idx = ocp->def->index; ocp_set_drvdata(ocp, dev); diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c index 7bd9102db701..9888fae1f37a 100644 --- a/drivers/i2c/busses/i2c-iop3xx.c +++ b/drivers/i2c/busses/i2c-iop3xx.c @@ -43,7 +43,7 @@ #include "i2c-iop3xx.h" /* global unit counter */ -static int i2c_id = 0; +static int i2c_id; static inline unsigned char iic_cook_addr(struct i2c_msg *msg) @@ -440,19 +440,17 @@ iop3xx_i2c_probe(struct device *dev) struct i2c_adapter *new_adapter; struct i2c_algo_iop3xx_data *adapter_data; - new_adapter = kmalloc(sizeof(struct i2c_adapter), GFP_KERNEL); + new_adapter = kzalloc(sizeof(struct i2c_adapter), GFP_KERNEL); if (!new_adapter) { ret = -ENOMEM; goto out; } - memset((void*)new_adapter, 0, sizeof(*new_adapter)); - adapter_data = kmalloc(sizeof(struct i2c_algo_iop3xx_data), GFP_KERNEL); + adapter_data = kzalloc(sizeof(struct i2c_algo_iop3xx_data), GFP_KERNEL); if (!adapter_data) { ret = -ENOMEM; goto free_adapter; } - memset((void*)adapter_data, 0, sizeof(*adapter_data)); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { @@ -525,6 +523,7 @@ out: static struct device_driver iop3xx_i2c_driver = { + .owner = THIS_MODULE, .name = "IOP3xx-I2C", .bus = &platform_bus_type, .probe = iop3xx_i2c_probe, diff --git a/drivers/i2c/busses/i2c-isa.c b/drivers/i2c/busses/i2c-isa.c index bdc6806dafae..4fdc02411609 100644 --- a/drivers/i2c/busses/i2c-isa.c +++ b/drivers/i2c/busses/i2c-isa.c @@ -92,6 +92,7 @@ int i2c_isa_add_driver(struct i2c_driver *driver) /* Add the driver to the list of i2c drivers in the driver core */ driver->driver.name = driver->name; + driver->driver.owner = driver->owner; driver->driver.bus = &i2c_bus_type; driver->driver.probe = i2c_isa_device_probe; driver->driver.remove = i2c_isa_device_remove; diff --git a/drivers/i2c/busses/i2c-ixp2000.c b/drivers/i2c/busses/i2c-ixp2000.c index 1956af382cd8..42016ee6ef13 100644 --- a/drivers/i2c/busses/i2c-ixp2000.c +++ b/drivers/i2c/busses/i2c-ixp2000.c @@ -36,6 +36,8 @@ #include <asm/hardware.h> /* Pick up IXP2000-specific bits */ #include <asm/arch/gpio.h> +static struct device_driver ixp2000_i2c_driver; + static inline int ixp2000_scl_pin(void *data) { return ((struct ixp2000_i2c_pins*)data)->scl_pin; @@ -104,11 +106,10 @@ static int ixp2000_i2c_probe(struct device *dev) struct platform_device *plat_dev = to_platform_device(dev); struct ixp2000_i2c_pins *gpio = plat_dev->dev.platform_data; struct ixp2000_i2c_data *drv_data = - kmalloc(sizeof(struct ixp2000_i2c_data), GFP_KERNEL); + kzalloc(sizeof(struct ixp2000_i2c_data), GFP_KERNEL); if (!drv_data) return -ENOMEM; - memzero(drv_data, sizeof(*drv_data)); drv_data->gpio_pins = gpio; drv_data->algo_data.data = gpio; @@ -121,6 +122,8 @@ static int ixp2000_i2c_probe(struct device *dev) drv_data->algo_data.timeout = 100; drv_data->adapter.id = I2C_HW_B_IXP2000, + strlcpy(drv_data->adapter.name, ixp2000_i2c_driver.name, + I2C_NAME_SIZE); drv_data->adapter.algo_data = &drv_data->algo_data, drv_data->adapter.dev.parent = &plat_dev->dev; @@ -142,6 +145,7 @@ static int ixp2000_i2c_probe(struct device *dev) } static struct device_driver ixp2000_i2c_driver = { + .owner = THIS_MODULE, .name = "IXP2000-I2C", .bus = &platform_bus_type, .probe = ixp2000_i2c_probe, diff --git a/drivers/i2c/busses/i2c-ixp4xx.c b/drivers/i2c/busses/i2c-ixp4xx.c index f6f5ca31fdba..69303ab65e04 100644 --- a/drivers/i2c/busses/i2c-ixp4xx.c +++ b/drivers/i2c/busses/i2c-ixp4xx.c @@ -35,6 +35,8 @@ #include <asm/hardware.h> /* Pick up IXP4xx-specific bits */ +static struct device_driver ixp4xx_i2c_driver; + static inline int ixp4xx_scl_pin(void *data) { return ((struct ixp4xx_i2c_pins*)data)->scl_pin; @@ -105,12 +107,11 @@ static int ixp4xx_i2c_probe(struct device *dev) struct platform_device *plat_dev = to_platform_device(dev); struct ixp4xx_i2c_pins *gpio = plat_dev->dev.platform_data; struct ixp4xx_i2c_data *drv_data = - kmalloc(sizeof(struct ixp4xx_i2c_data), GFP_KERNEL); + kzalloc(sizeof(struct ixp4xx_i2c_data), GFP_KERNEL); if(!drv_data) return -ENOMEM; - memzero(drv_data, sizeof(struct ixp4xx_i2c_data)); drv_data->gpio_pins = gpio; /* @@ -129,6 +130,8 @@ static int ixp4xx_i2c_probe(struct device *dev) drv_data->algo_data.timeout = 100; drv_data->adapter.id = I2C_HW_B_IXP4XX; + strlcpy(drv_data->adapter.name, ixp4xx_i2c_driver.name, + I2C_NAME_SIZE); drv_data->adapter.algo_data = &drv_data->algo_data; drv_data->adapter.dev.parent = &plat_dev->dev; @@ -151,6 +154,7 @@ static int ixp4xx_i2c_probe(struct device *dev) } static struct device_driver ixp4xx_i2c_driver = { + .owner = THIS_MODULE, .name = "IXP4XX-I2C", .bus = &platform_bus_type, .probe = ixp4xx_i2c_probe, diff --git a/drivers/i2c/busses/i2c-keywest.c b/drivers/i2c/busses/i2c-keywest.c index eff5896ce865..d61f748278fc 100644 --- a/drivers/i2c/busses/i2c-keywest.c +++ b/drivers/i2c/busses/i2c-keywest.c @@ -535,13 +535,12 @@ create_iface(struct device_node *np, struct device *dev) tsize = sizeof(struct keywest_iface) + (sizeof(struct keywest_chan) + 4) * nchan; - iface = (struct keywest_iface *) kmalloc(tsize, GFP_KERNEL); + iface = kzalloc(tsize, GFP_KERNEL); if (iface == NULL) { printk(KERN_ERR "i2c-keywest: can't allocate inteface !\n"); pmac_low_i2c_unlock(np); return -ENOMEM; } - memset(iface, 0, tsize); spin_lock_init(&iface->lock); init_completion(&iface->complete); iface->node = of_node_get(np); @@ -716,6 +715,7 @@ static struct of_device_id i2c_keywest_match[] = static struct macio_driver i2c_keywest_macio_driver = { + .owner = THIS_MODULE, .name = "i2c-keywest", .match_table = i2c_keywest_match, .probe = create_iface_macio, @@ -724,6 +724,7 @@ static struct macio_driver i2c_keywest_macio_driver = static struct of_platform_driver i2c_keywest_of_platform_driver = { + .owner = THIS_MODULE, .name = "i2c-keywest", .match_table = i2c_keywest_match, .probe = create_iface_of_platform, diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index f065583ddcf1..8491633005b8 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -296,10 +296,9 @@ static int fsl_i2c_probe(struct device *device) pdata = (struct fsl_i2c_platform_data *) pdev->dev.platform_data; - if (!(i2c = kmalloc(sizeof(*i2c), GFP_KERNEL))) { + if (!(i2c = kzalloc(sizeof(*i2c), GFP_KERNEL))) { return -ENOMEM; } - memset(i2c, 0, sizeof(*i2c)); i2c->irq = platform_get_irq(pdev, 0); i2c->flags = pdata->device_flags; @@ -361,6 +360,7 @@ static int fsl_i2c_remove(struct device *device) /* Structure for a device driver */ static struct device_driver fsl_i2c_driver = { + .owner = THIS_MODULE, .name = "fsl-i2c", .bus = &platform_bus_type, .probe = fsl_i2c_probe, diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c index 99abca45fece..d0d2a6f1386e 100644 --- a/drivers/i2c/busses/i2c-mv64xxx.c +++ b/drivers/i2c/busses/i2c-mv64xxx.c @@ -500,13 +500,10 @@ mv64xxx_i2c_probe(struct device *dev) if ((pd->id != 0) || !pdata) return -ENODEV; - drv_data = kmalloc(sizeof(struct mv64xxx_i2c_data), GFP_KERNEL); - + drv_data = kzalloc(sizeof(struct mv64xxx_i2c_data), GFP_KERNEL); if (!drv_data) return -ENOMEM; - memset(drv_data, 0, sizeof(struct mv64xxx_i2c_data)); - if (mv64xxx_i2c_map_regs(pd, drv_data)) { rc = -ENODEV; goto exit_kfree; @@ -570,6 +567,7 @@ mv64xxx_i2c_remove(struct device *dev) } static struct device_driver mv64xxx_i2c_driver = { + .owner = THIS_MODULE, .name = MV64XXX_I2C_CTLR_NAME, .bus = &platform_bus_type, .probe = mv64xxx_i2c_probe, diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index fe9c0f42a2b7..fd26036e68a3 100644 --- a/drivers/i2c/busses/i2c-nforce2.c +++ b/drivers/i2c/busses/i2c-nforce2.c @@ -97,6 +97,7 @@ struct nforce2_smbus { #define NVIDIA_SMB_PRTCL_I2C_BLOCK_DATA 0x4a #define NVIDIA_SMB_PRTCL_PEC 0x80 +static struct pci_driver nforce2_driver; static s32 nforce2_access(struct i2c_adapter *adap, u16 addr, unsigned short flags, char read_write, @@ -113,7 +114,6 @@ static struct i2c_adapter nforce2_adapter = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, .algo = &smbus_algorithm, - .name = "unset", }; /* Return -1 on error. See smbus.h for more information */ @@ -188,13 +188,6 @@ static s32 nforce2_access(struct i2c_adapter * adap, u16 addr, dev_err(&adap->dev, "I2C_SMBUS_BLOCK_PROC_CALL not supported!\n"); return -1; - case I2C_SMBUS_WORD_DATA_PEC: - case I2C_SMBUS_BLOCK_DATA_PEC: - case I2C_SMBUS_PROC_CALL_PEC: - case I2C_SMBUS_BLOCK_PROC_CALL_PEC: - dev_err(&adap->dev, "Unexpected software PEC transaction %d\n.", size); - return -1; - default: dev_err(&adap->dev, "Unsupported transaction %d\n", size); return -1; @@ -285,7 +278,7 @@ static int __devinit nforce2_probe_smb (struct pci_dev *dev, int reg, smbus->base = iobase & 0xfffc; smbus->size = 8; - if (!request_region(smbus->base, smbus->size, "nForce2 SMBus")) { + if (!request_region(smbus->base, smbus->size, nforce2_driver.name)) { dev_err(&smbus->adapter.dev, "Error requesting region %02x .. %02X for %s\n", smbus->base, smbus->base+smbus->size-1, name); return -1; @@ -313,10 +306,8 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_ int res1, res2; /* we support 2 SMBus adapters */ - if (!(smbuses = (void *)kmalloc(2*sizeof(struct nforce2_smbus), - GFP_KERNEL))) + if (!(smbuses = kzalloc(2*sizeof(struct nforce2_smbus), GFP_KERNEL))) return -ENOMEM; - memset (smbuses, 0, 2*sizeof(struct nforce2_smbus)); pci_set_drvdata(dev, smbuses); /* SMBus adapter 1 */ @@ -356,6 +347,7 @@ static void __devexit nforce2_remove(struct pci_dev *dev) } static struct pci_driver nforce2_driver = { + .owner = THIS_MODULE, .name = "nForce2_smbus", .id_table = nforce2_ids, .probe = nforce2_probe, diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c index 71a2502fe069..2854d858fc9b 100644 --- a/drivers/i2c/busses/i2c-parport.c +++ b/drivers/i2c/busses/i2c-parport.c @@ -155,12 +155,11 @@ static void i2c_parport_attach (struct parport *port) { struct i2c_par *adapter; - adapter = kmalloc(sizeof(struct i2c_par), GFP_KERNEL); + adapter = kzalloc(sizeof(struct i2c_par), GFP_KERNEL); if (adapter == NULL) { - printk(KERN_ERR "i2c-parport: Failed to kmalloc\n"); + printk(KERN_ERR "i2c-parport: Failed to kzalloc\n"); return; } - memset(adapter, 0x00, sizeof(struct i2c_par)); pr_debug("i2c-parport: attaching to %s\n", port->name); adapter->pdev = parport_register_device(port, "i2c-parport", @@ -232,7 +231,7 @@ static void i2c_parport_detach (struct parport *port) } } -static struct parport_driver i2c_driver = { +static struct parport_driver i2c_parport_driver = { .name = "i2c-parport", .attach = i2c_parport_attach, .detach = i2c_parport_detach, @@ -250,12 +249,12 @@ static int __init i2c_parport_init(void) type = 0; } - return parport_register_driver(&i2c_driver); + return parport_register_driver(&i2c_parport_driver); } static void __exit i2c_parport_exit(void) { - parport_unregister_driver(&i2c_driver); + parport_unregister_driver(&i2c_parport_driver); } MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index 6d48a4da7bed..7d63eec423fe 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -90,13 +90,13 @@ struct sd { /* If force is set to anything different from 0, we forcibly enable the PIIX4. DANGEROUS! */ -static int force = 0; +static int force; module_param (force, int, 0); MODULE_PARM_DESC(force, "Forcibly enable the PIIX4. DANGEROUS!"); /* If force_addr is set to anything different from 0, we forcibly enable the PIIX4 at the given address. VERY DANGEROUS! */ -static int force_addr = 0; +static int force_addr; module_param (force_addr, int, 0); MODULE_PARM_DESC(force_addr, "Forcibly enable the PIIX4 at the given address. " @@ -104,14 +104,15 @@ MODULE_PARM_DESC(force_addr, /* If fix_hstcfg is set to anything different from 0, we reset one of the registers to be a valid value. */ -static int fix_hstcfg = 0; +static int fix_hstcfg; module_param (fix_hstcfg, int, 0); MODULE_PARM_DESC(fix_hstcfg, "Fix config register. Needed on some boards (Force CPCI735)."); static int piix4_transaction(void); -static unsigned short piix4_smba = 0; +static unsigned short piix4_smba; +static struct pci_driver piix4_driver; static struct i2c_adapter piix4_adapter; static struct dmi_system_id __devinitdata piix4_dmi_table[] = { @@ -157,7 +158,7 @@ static int __devinit piix4_setup(struct pci_dev *PIIX4_dev, } } - if (!request_region(piix4_smba, SMBIOSIZE, "piix4-smbus")) { + if (!request_region(piix4_smba, SMBIOSIZE, piix4_driver.name)) { dev_err(&PIIX4_dev->dev, "SMB region 0x%x already in use!\n", piix4_smba); return -ENODEV; @@ -407,7 +408,6 @@ static struct i2c_adapter piix4_adapter = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, .algo = &smbus_algorithm, - .name = "unset", }; static struct pci_device_id piix4_ids[] = { @@ -462,6 +462,7 @@ static void __devexit piix4_remove(struct pci_dev *dev) } static struct pci_driver piix4_driver = { + .owner = THIS_MODULE, .name = "piix4_smbus", .id_table = piix4_ids, .probe = piix4_probe, diff --git a/drivers/i2c/busses/i2c-pmac-smu.c b/drivers/i2c/busses/i2c-pmac-smu.c index 8a9f5648a23d..bfefe7f7a53d 100644 --- a/drivers/i2c/busses/i2c-pmac-smu.c +++ b/drivers/i2c/busses/i2c-pmac-smu.c @@ -211,12 +211,11 @@ static int create_iface(struct device_node *np, struct device *dev) } busid = *reg; - iface = kmalloc(sizeof(struct smu_iface), GFP_KERNEL); + iface = kzalloc(sizeof(struct smu_iface), GFP_KERNEL); if (iface == NULL) { printk(KERN_ERR "i2c-pmac-smu: can't allocate inteface !\n"); return -ENOMEM; } - memset(iface, 0, sizeof(struct smu_iface)); init_completion(&iface->complete); iface->busid = busid; diff --git a/drivers/i2c/busses/i2c-prosavage.c b/drivers/i2c/busses/i2c-prosavage.c index 83fd16d61ce5..42cb1d8ca659 100644 --- a/drivers/i2c/busses/i2c-prosavage.c +++ b/drivers/i2c/busses/i2c-prosavage.c @@ -83,11 +83,6 @@ struct s_i2c_chip { /* * i2c configuration */ -#ifndef I2C_HW_B_S3VIA -#define I2C_HW_B_S3VIA 0x18 /* S3VIA ProSavage adapter */ -#endif - -/* delays */ #define CYCLE_DELAY 10 #define TIMEOUT (HZ / 2) @@ -241,14 +236,12 @@ static int __devinit prosavage_probe(struct pci_dev *dev, const struct pci_devic struct s_i2c_chip *chip; struct s_i2c_bus *bus; - pci_set_drvdata(dev, kmalloc(sizeof(struct s_i2c_chip), GFP_KERNEL)); + pci_set_drvdata(dev, kzalloc(sizeof(struct s_i2c_chip), GFP_KERNEL)); chip = (struct s_i2c_chip *)pci_get_drvdata(dev); if (chip == NULL) { return -ENOMEM; } - memset(chip, 0, sizeof(struct s_i2c_chip)); - base = dev->resource[0].start & PCI_BASE_ADDRESS_MEM_MASK; len = dev->resource[0].end - base + 1; chip->mmio = ioremap_nocache(base, len); @@ -308,6 +301,7 @@ static struct pci_device_id prosavage_pci_tbl[] = { MODULE_DEVICE_TABLE (pci, prosavage_pci_tbl); static struct pci_driver prosavage_driver = { + .owner = THIS_MODULE, .name = "prosavage_smbus", .id_table = prosavage_pci_tbl, .probe = prosavage_probe, diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index 73a092fb0e7e..6ced28e90070 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -879,14 +879,12 @@ static int s3c24xx_i2c_remove(struct device *dev) } #ifdef CONFIG_PM -static int s3c24xx_i2c_resume(struct device *dev, u32 level) +static int s3c24xx_i2c_resume(struct device *dev) { struct s3c24xx_i2c *i2c = dev_get_drvdata(dev); - - if (i2c != NULL && level == RESUME_ENABLE) { - dev_dbg(dev, "resume: level %d\n", level); + + if (i2c != NULL) s3c24xx_i2c_init(i2c); - } return 0; } @@ -898,6 +896,7 @@ static int s3c24xx_i2c_resume(struct device *dev, u32 level) /* device driver for platform bus bits */ static struct device_driver s3c2410_i2c_driver = { + .owner = THIS_MODULE, .name = "s3c2410-i2c", .bus = &platform_bus_type, .probe = s3c24xx_i2c_probe, @@ -906,6 +905,7 @@ static struct device_driver s3c2410_i2c_driver = { }; static struct device_driver s3c2440_i2c_driver = { + .owner = THIS_MODULE, .name = "s3c2440-i2c", .bus = &platform_bus_type, .probe = s3c24xx_i2c_probe, diff --git a/drivers/i2c/busses/i2c-savage4.c b/drivers/i2c/busses/i2c-savage4.c index 0c8518298e4d..aebe87ba4033 100644 --- a/drivers/i2c/busses/i2c-savage4.c +++ b/drivers/i2c/busses/i2c-savage4.c @@ -179,6 +179,7 @@ static void __devexit savage4_remove(struct pci_dev *dev) } static struct pci_driver savage4_driver = { + .owner = THIS_MODULE, .name = "savage4_smbus", .id_table = savage4_ids, .probe = savage4_probe, diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c index 080318d6f54b..3ad27c3ba15b 100644 --- a/drivers/i2c/busses/i2c-sis5595.c +++ b/drivers/i2c/busses/i2c-sis5595.c @@ -123,11 +123,12 @@ static int blacklist[] = { /* If force_addr is set to anything different from 0, we forcibly enable the device at the given address. */ -static u16 force_addr = 0; +static u16 force_addr; module_param(force_addr, ushort, 0); MODULE_PARM_DESC(force_addr, "Initialize the base address of the i2c controller"); -static unsigned short sis5595_base = 0; +static struct pci_driver sis5595_driver; +static unsigned short sis5595_base; static u8 sis5595_read(u8 reg) { @@ -172,7 +173,8 @@ static int sis5595_setup(struct pci_dev *SIS5595_dev) /* NB: We grab just the two SMBus registers here, but this may still * interfere with ACPI :-( */ - if (!request_region(sis5595_base + SMB_INDEX, 2, "sis5595-smbus")) { + if (!request_region(sis5595_base + SMB_INDEX, 2, + sis5595_driver.name)) { dev_err(&SIS5595_dev->dev, "SMBus registers 0x%04x-0x%04x already in use!\n", sis5595_base + SMB_INDEX, sis5595_base + SMB_INDEX + 1); return -ENODEV; @@ -364,7 +366,6 @@ static struct i2c_algorithm smbus_algorithm = { static struct i2c_adapter sis5595_adapter = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, - .name = "unset", .algo = &smbus_algorithm, }; @@ -397,6 +398,7 @@ static void __devexit sis5595_remove(struct pci_dev *dev) } static struct pci_driver sis5595_driver = { + .owner = THIS_MODULE, .name = "sis5595_smbus", .id_table = sis5595_ids, .probe = sis5595_probe, diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c index 86f0f448fa0b..7f49e5fd3ff0 100644 --- a/drivers/i2c/busses/i2c-sis630.c +++ b/drivers/i2c/busses/i2c-sis630.c @@ -92,6 +92,8 @@ #define SIS630_PCALL 0x04 #define SIS630_BLOCK_DATA 0x05 +static struct pci_driver sis630_driver; + /* insmod parameters */ static int high_clock; static int force; @@ -101,7 +103,7 @@ module_param(force, bool, 0); MODULE_PARM_DESC(force, "Forcibly enable the SIS630. DANGEROUS!"); /* acpi base address */ -static unsigned short acpi_base = 0; +static unsigned short acpi_base; /* supported chips */ static int supported[] = { @@ -432,7 +434,8 @@ static int sis630_setup(struct pci_dev *sis630_dev) dev_dbg(&sis630_dev->dev, "ACPI base at 0x%04x\n", acpi_base); /* Everything is happy, let's grab the memory and set things up. */ - if (!request_region(acpi_base + SMB_STS, SIS630_SMB_IOREGION, "sis630-smbus")) { + if (!request_region(acpi_base + SMB_STS, SIS630_SMB_IOREGION, + sis630_driver.name)) { dev_err(&sis630_dev->dev, "SMBus registers 0x%04x-0x%04x already " "in use!\n", acpi_base + SMB_STS, acpi_base + SMB_SAA); goto exit; @@ -455,7 +458,6 @@ static struct i2c_algorithm smbus_algorithm = { static struct i2c_adapter sis630_adapter = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, - .name = "unset", .algo = &smbus_algorithm, }; @@ -494,6 +496,7 @@ static void __devexit sis630_remove(struct pci_dev *dev) static struct pci_driver sis630_driver = { + .owner = THIS_MODULE, .name = "sis630_smbus", .id_table = sis630_ids, .probe = sis630_probe, diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c index ead2ff3cf60e..6a134c091324 100644 --- a/drivers/i2c/busses/i2c-sis96x.c +++ b/drivers/i2c/busses/i2c-sis96x.c @@ -82,8 +82,9 @@ #define SIS96x_PROC_CALL 0x04 #define SIS96x_BLOCK_DATA 0x05 +static struct pci_driver sis96x_driver; static struct i2c_adapter sis96x_adapter; -static u16 sis96x_smbus_base = 0; +static u16 sis96x_smbus_base; static inline u8 sis96x_read(u8 reg) { @@ -257,7 +258,6 @@ static struct i2c_adapter sis96x_adapter = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, .algo = &smbus_algorithm, - .name = "unset", }; static struct pci_device_id sis96x_ids[] = { @@ -294,7 +294,8 @@ static int __devinit sis96x_probe(struct pci_dev *dev, sis96x_smbus_base); /* Everything is happy, let's grab the memory and set things up. */ - if (!request_region(sis96x_smbus_base, SMB_IOSIZE, "sis96x-smbus")) { + if (!request_region(sis96x_smbus_base, SMB_IOSIZE, + sis96x_driver.name)) { dev_err(&dev->dev, "SMBus registers 0x%04x-0x%04x " "already in use!\n", sis96x_smbus_base, sis96x_smbus_base + SMB_IOSIZE - 1); @@ -328,6 +329,7 @@ static void __devexit sis96x_remove(struct pci_dev *dev) } static struct pci_driver sis96x_driver = { + .owner = THIS_MODULE, .name = "sis96x_smbus", .id_table = sis96x_ids, .probe = sis96x_probe, diff --git a/drivers/i2c/busses/i2c-via.c b/drivers/i2c/busses/i2c-via.c index 040b8abeabba..544a38e64394 100644 --- a/drivers/i2c/busses/i2c-via.c +++ b/drivers/i2c/busses/i2c-via.c @@ -43,9 +43,9 @@ /* io-region reservation */ #define IOSPACE 0x06 -#define IOTEXT "via-i2c" -static u16 pm_io_base = 0; +static struct pci_driver vt586b_driver; +static u16 pm_io_base; /* It does not appear from the datasheet that the GPIO pins are @@ -130,7 +130,7 @@ static int __devinit vt586b_probe(struct pci_dev *dev, const struct pci_device_i pci_read_config_word(dev, base, &pm_io_base); pm_io_base &= (0xff << 8); - if (!request_region(I2C_DIR, IOSPACE, IOTEXT)) { + if (!request_region(I2C_DIR, IOSPACE, vt586b_driver.name)) { dev_err(&dev->dev, "IO 0x%x-0x%x already in use\n", I2C_DIR, I2C_DIR + IOSPACE); return -ENODEV; } @@ -159,6 +159,7 @@ static void __devexit vt586b_remove(struct pci_dev *dev) static struct pci_driver vt586b_driver = { + .owner = THIS_MODULE, .name = "vt586b_smbus", .id_table = vt586b_ids, .probe = vt586b_probe, diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c index 99d209e0485a..c9366b504833 100644 --- a/drivers/i2c/busses/i2c-viapro.c +++ b/drivers/i2c/busses/i2c-viapro.c @@ -1,9 +1,10 @@ /* i2c-viapro.c - Part of lm_sensors, Linux kernel modules for hardware monitoring - Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>, + Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>, Philip Edelbrock <phil@netroedge.com>, Kyösti Mälkki <kmalkki@cc.hut.fi>, Mark D. Studebaker <mdsxyz123@yahoo.com> + Copyright (C) 2005 Jean Delvare <khali@linux-fr.org> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -21,15 +22,19 @@ */ /* - Supports Via devices: - 82C596A/B (0x3050) - 82C596B (0x3051) - 82C686A/B - 8231 - 8233 - 8233A (0x3147 and 0x3177) - 8235 - 8237 + Supports the following VIA south bridges: + + Chip name PCI ID REV I2C block + VT82C596A 0x3050 no + VT82C596B 0x3051 no + VT82C686A 0x3057 0x30 no + VT82C686B 0x3057 0x40 yes + VT8231 0x8235 no? + VT8233 0x3074 yes + VT8233A 0x3147 yes? + VT8235 0x3177 yes + VT8237R 0x3227 yes + Note: we assume there can only be one device, with one SMBus interface. */ @@ -38,7 +43,6 @@ #include <linux/pci.h> #include <linux/kernel.h> #include <linux/stddef.h> -#include <linux/sched.h> #include <linux/ioport.h> #include <linux/i2c.h> #include <linux/init.h> @@ -46,48 +50,37 @@ static struct pci_dev *vt596_pdev; -#define SMBBA1 0x90 -#define SMBBA2 0x80 -#define SMBBA3 0xD0 +#define SMBBA1 0x90 +#define SMBBA2 0x80 +#define SMBBA3 0xD0 /* SMBus address offsets */ static unsigned short vt596_smba; #define SMBHSTSTS (vt596_smba + 0) -#define SMBHSLVSTS (vt596_smba + 1) #define SMBHSTCNT (vt596_smba + 2) #define SMBHSTCMD (vt596_smba + 3) #define SMBHSTADD (vt596_smba + 4) #define SMBHSTDAT0 (vt596_smba + 5) #define SMBHSTDAT1 (vt596_smba + 6) #define SMBBLKDAT (vt596_smba + 7) -#define SMBSLVCNT (vt596_smba + 8) -#define SMBSHDWCMD (vt596_smba + 9) -#define SMBSLVEVT (vt596_smba + 0xA) -#define SMBSLVDAT (vt596_smba + 0xC) /* PCI Address Constants */ /* SMBus data in configuration space can be found in two places, - We try to select the better one*/ - -static unsigned short smb_cf_hstcfg = 0xD2; + We try to select the better one */ -#define SMBHSTCFG (smb_cf_hstcfg) -#define SMBSLVC (smb_cf_hstcfg + 1) -#define SMBSHDW1 (smb_cf_hstcfg + 2) -#define SMBSHDW2 (smb_cf_hstcfg + 3) -#define SMBREV (smb_cf_hstcfg + 4) +static unsigned short SMBHSTCFG = 0xD2; /* Other settings */ #define MAX_TIMEOUT 500 -#define ENABLE_INT9 0 /* VT82C596 constants */ -#define VT596_QUICK 0x00 -#define VT596_BYTE 0x04 -#define VT596_BYTE_DATA 0x08 -#define VT596_WORD_DATA 0x0C -#define VT596_BLOCK_DATA 0x14 +#define VT596_QUICK 0x00 +#define VT596_BYTE 0x04 +#define VT596_BYTE_DATA 0x08 +#define VT596_WORD_DATA 0x0C +#define VT596_BLOCK_DATA 0x14 +#define VT596_I2C_BLOCK_DATA 0x34 /* If force is set to anything different from 0, we forcibly enable the @@ -105,40 +98,65 @@ MODULE_PARM_DESC(force_addr, "EXTREMELY DANGEROUS!"); +static struct pci_driver vt596_driver; static struct i2c_adapter vt596_adapter; -/* Another internally used function */ -static int vt596_transaction(void) +#define FEATURE_I2CBLOCK (1<<0) +static unsigned int vt596_features; + +#ifdef DEBUG +static void vt596_dump_regs(const char *msg, u8 size) +{ + dev_dbg(&vt596_adapter.dev, "%s: STS=%02x CNT=%02x CMD=%02x ADD=%02x " + "DAT=%02x,%02x\n", msg, inb_p(SMBHSTSTS), inb_p(SMBHSTCNT), + inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), + inb_p(SMBHSTDAT1)); + + if (size == VT596_BLOCK_DATA + || size == VT596_I2C_BLOCK_DATA) { + int i; + + dev_dbg(&vt596_adapter.dev, "BLK="); + for (i = 0; i < I2C_SMBUS_BLOCK_MAX / 2; i++) + printk("%02x,", inb_p(SMBBLKDAT)); + printk("\n"); + dev_dbg(&vt596_adapter.dev, " "); + for (; i < I2C_SMBUS_BLOCK_MAX - 1; i++) + printk("%02x,", inb_p(SMBBLKDAT)); + printk("%02x\n", inb_p(SMBBLKDAT)); + } +} +#else +static inline void vt596_dump_regs(const char *msg, u8 size) { } +#endif + +/* Return -1 on error, 0 on success */ +static int vt596_transaction(u8 size) { int temp; int result = 0; int timeout = 0; - dev_dbg(&vt596_adapter.dev, "Transaction (pre): CNT=%02x, CMD=%02x, " - "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), - inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), - inb_p(SMBHSTDAT1)); + vt596_dump_regs("Transaction (pre)", size); /* Make sure the SMBus host is ready to start transmitting */ if ((temp = inb_p(SMBHSTSTS)) & 0x1F) { dev_dbg(&vt596_adapter.dev, "SMBus busy (0x%02x). " - "Resetting...\n", temp); - + "Resetting... ", temp); + outb_p(temp, SMBHSTSTS); if ((temp = inb_p(SMBHSTSTS)) & 0x1F) { - dev_dbg(&vt596_adapter.dev, "Failed! (0x%02x)\n", temp); - + printk("Failed! (0x%02x)\n", temp); return -1; } else { - dev_dbg(&vt596_adapter.dev, "Successfull!\n"); + printk("Successful!\n"); } } - /* start the transaction by setting bit 6 */ - outb_p(inb(SMBHSTCNT) | 0x040, SMBHSTCNT); + /* Start the transaction by setting bit 6 */ + outb_p(0x40 | (size & 0x3C), SMBHSTCNT); - /* We will always wait for a fraction of a second! - I don't know if VIA needs this, Intel did */ + /* We will always wait for a fraction of a second */ do { msleep(1); temp = inb_p(SMBHSTSTS); @@ -147,77 +165,61 @@ static int vt596_transaction(void) /* If the SMBus is still busy, we give up */ if (timeout >= MAX_TIMEOUT) { result = -1; - dev_dbg(&vt596_adapter.dev, "SMBus Timeout!\n"); + dev_err(&vt596_adapter.dev, "SMBus timeout!\n"); } if (temp & 0x10) { result = -1; - dev_dbg(&vt596_adapter.dev, "Error: Failed bus transaction\n"); + dev_err(&vt596_adapter.dev, "Transaction failed (0x%02x)\n", + inb_p(SMBHSTCNT) & 0x3C); } if (temp & 0x08) { result = -1; - dev_info(&vt596_adapter.dev, "Bus collision! SMBus may be " - "locked until next hard\nreset. (sorry!)\n"); - /* Clock stops and slave is stuck in mid-transmission */ + dev_err(&vt596_adapter.dev, "SMBus collision!\n"); } if (temp & 0x04) { result = -1; - dev_dbg(&vt596_adapter.dev, "Error: no response!\n"); + /* Quick commands are used to probe for chips, so + errors are expected, and we don't want to frighten the + user. */ + if ((inb_p(SMBHSTCNT) & 0x3C) != VT596_QUICK) + dev_err(&vt596_adapter.dev, "Transaction error!\n"); } - if ((temp = inb_p(SMBHSTSTS)) & 0x1F) { + /* Resetting status register */ + if (temp & 0x1F) outb_p(temp, SMBHSTSTS); - if ((temp = inb_p(SMBHSTSTS)) & 0x1F) { - dev_warn(&vt596_adapter.dev, "Failed reset at end " - "of transaction (%02x)\n", temp); - } - } - dev_dbg(&vt596_adapter.dev, "Transaction (post): CNT=%02x, CMD=%02x, " - "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), - inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), - inb_p(SMBHSTDAT1)); - + vt596_dump_regs("Transaction (post)", size); + return result; } -/* Return -1 on error. */ +/* Return -1 on error, 0 on success */ static s32 vt596_access(struct i2c_adapter *adap, u16 addr, - unsigned short flags, char read_write, u8 command, - int size, union i2c_smbus_data *data) + unsigned short flags, char read_write, u8 command, + int size, union i2c_smbus_data *data) { - int i, len; + int i; switch (size) { - case I2C_SMBUS_PROC_CALL: - dev_info(&vt596_adapter.dev, - "I2C_SMBUS_PROC_CALL not supported!\n"); - return -1; case I2C_SMBUS_QUICK: - outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), - SMBHSTADD); size = VT596_QUICK; break; case I2C_SMBUS_BYTE: - outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), - SMBHSTADD); if (read_write == I2C_SMBUS_WRITE) outb_p(command, SMBHSTCMD); size = VT596_BYTE; break; case I2C_SMBUS_BYTE_DATA: - outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), - SMBHSTADD); outb_p(command, SMBHSTCMD); if (read_write == I2C_SMBUS_WRITE) outb_p(data->byte, SMBHSTDAT0); size = VT596_BYTE_DATA; break; case I2C_SMBUS_WORD_DATA: - outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), - SMBHSTADD); outb_p(command, SMBHSTCMD); if (read_write == I2C_SMBUS_WRITE) { outb_p(data->word & 0xff, SMBHSTDAT0); @@ -225,28 +227,33 @@ static s32 vt596_access(struct i2c_adapter *adap, u16 addr, } size = VT596_WORD_DATA; break; + case I2C_SMBUS_I2C_BLOCK_DATA: + if (!(vt596_features & FEATURE_I2CBLOCK)) + goto exit_unsupported; + if (read_write == I2C_SMBUS_READ) + outb_p(I2C_SMBUS_BLOCK_MAX, SMBHSTDAT0); + /* Fall through */ case I2C_SMBUS_BLOCK_DATA: - outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), - SMBHSTADD); outb_p(command, SMBHSTCMD); if (read_write == I2C_SMBUS_WRITE) { - len = data->block[0]; - if (len < 0) - len = 0; + u8 len = data->block[0]; if (len > I2C_SMBUS_BLOCK_MAX) len = I2C_SMBUS_BLOCK_MAX; outb_p(len, SMBHSTDAT0); - i = inb_p(SMBHSTCNT); /* Reset SMBBLKDAT */ + inb_p(SMBHSTCNT); /* Reset SMBBLKDAT */ for (i = 1; i <= len; i++) outb_p(data->block[i], SMBBLKDAT); } - size = VT596_BLOCK_DATA; + size = (size == I2C_SMBUS_I2C_BLOCK_DATA) ? + VT596_I2C_BLOCK_DATA : VT596_BLOCK_DATA; break; + default: + goto exit_unsupported; } - outb_p((size & 0x1C) + (ENABLE_INT9 & 1), SMBHSTCNT); + outb_p(((addr & 0x7f) << 1) | read_write, SMBHSTADD); - if (vt596_transaction()) /* Error in transaction */ + if (vt596_transaction(size)) /* Error in transaction */ return -1; if ((read_write == I2C_SMBUS_WRITE) || (size == VT596_QUICK)) @@ -254,35 +261,39 @@ static s32 vt596_access(struct i2c_adapter *adap, u16 addr, switch (size) { case VT596_BYTE: - /* Where is the result put? I assume here it is in - * SMBHSTDAT0 but it might just as well be in the - * SMBHSTCMD. No clue in the docs - */ - data->byte = inb_p(SMBHSTDAT0); - break; case VT596_BYTE_DATA: data->byte = inb_p(SMBHSTDAT0); break; case VT596_WORD_DATA: data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8); break; + case VT596_I2C_BLOCK_DATA: case VT596_BLOCK_DATA: data->block[0] = inb_p(SMBHSTDAT0); if (data->block[0] > I2C_SMBUS_BLOCK_MAX) data->block[0] = I2C_SMBUS_BLOCK_MAX; - i = inb_p(SMBHSTCNT); /* Reset SMBBLKDAT */ + inb_p(SMBHSTCNT); /* Reset SMBBLKDAT */ for (i = 1; i <= data->block[0]; i++) data->block[i] = inb_p(SMBBLKDAT); break; } return 0; + +exit_unsupported: + dev_warn(&vt596_adapter.dev, "Unsupported command invoked! (0x%02x)\n", + size); + return -1; } static u32 vt596_func(struct i2c_adapter *adapter) { - return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | + u32 func = I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BLOCK_DATA; + + if (vt596_features & FEATURE_I2CBLOCK) + func |= I2C_FUNC_SMBUS_I2C_BLOCK; + return func; } static struct i2c_algorithm smbus_algorithm = { @@ -294,7 +305,6 @@ static struct i2c_adapter vt596_adapter = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, .algo = &smbus_algorithm, - .name = "unset", }; static int __devinit vt596_probe(struct pci_dev *pdev, @@ -302,7 +312,7 @@ static int __devinit vt596_probe(struct pci_dev *pdev, { unsigned char temp; int error = -ENODEV; - + /* Determine the address of the SMBus areas */ if (force_addr) { vt596_smba = force_addr & 0xfff0; @@ -311,12 +321,12 @@ static int __devinit vt596_probe(struct pci_dev *pdev, } if ((pci_read_config_word(pdev, id->driver_data, &vt596_smba)) || - !(vt596_smba & 0x1)) { + !(vt596_smba & 0x0001)) { /* try 2nd address and config reg. for 596 */ if (id->device == PCI_DEVICE_ID_VIA_82C596_3 && !pci_read_config_word(pdev, SMBBA2, &vt596_smba) && - (vt596_smba & 0x1)) { - smb_cf_hstcfg = 0x84; + (vt596_smba & 0x0001)) { + SMBHSTCFG = 0x84; } else { /* no matches at all */ dev_err(&pdev->dev, "Cannot configure " @@ -333,10 +343,10 @@ static int __devinit vt596_probe(struct pci_dev *pdev, return -ENODEV; } - found: - if (!request_region(vt596_smba, 8, "viapro-smbus")) { +found: + if (!request_region(vt596_smba, 8, vt596_driver.name)) { dev_err(&pdev->dev, "SMBus region 0x%x already in use!\n", - vt596_smba); + vt596_smba); return -ENODEV; } @@ -348,16 +358,16 @@ static int __devinit vt596_probe(struct pci_dev *pdev, pci_write_config_word(pdev, id->driver_data, vt596_smba); pci_write_config_byte(pdev, SMBHSTCFG, temp | 0x01); dev_warn(&pdev->dev, "WARNING: SMBus interface set to new " - "address 0x%04x!\n", vt596_smba); - } else if ((temp & 1) == 0) { + "address 0x%04x!\n", vt596_smba); + } else if (!(temp & 0x01)) { if (force) { - /* NOTE: This assumes I/O space and other allocations - * WERE done by the Bios! Don't complain if your - * hardware does weird things after enabling this. - * :') Check for Bios updates before resorting to + /* NOTE: This assumes I/O space and other allocations + * WERE done by the Bios! Don't complain if your + * hardware does weird things after enabling this. + * :') Check for Bios updates before resorting to * this. */ - pci_write_config_byte(pdev, SMBHSTCFG, temp | 1); + pci_write_config_byte(pdev, SMBHSTCFG, temp | 0x01); dev_info(&pdev->dev, "Enabling SMBus device\n"); } else { dev_err(&pdev->dev, "SMBUS: Error: Host SMBus " @@ -367,22 +377,28 @@ static int __devinit vt596_probe(struct pci_dev *pdev, } } - if ((temp & 0x0E) == 8) - dev_dbg(&pdev->dev, "using Interrupt 9 for SMBus.\n"); - else if ((temp & 0x0E) == 0) - dev_dbg(&pdev->dev, "using Interrupt SMI# for SMBus.\n"); - else - dev_dbg(&pdev->dev, "Illegal Interrupt configuration " - "(or code out of date)!\n"); - - pci_read_config_byte(pdev, SMBREV, &temp); - dev_dbg(&pdev->dev, "SMBREV = 0x%X\n", temp); dev_dbg(&pdev->dev, "VT596_smba = 0x%X\n", vt596_smba); + switch (pdev->device) { + case PCI_DEVICE_ID_VIA_8237: + case PCI_DEVICE_ID_VIA_8235: + case PCI_DEVICE_ID_VIA_8233A: + case PCI_DEVICE_ID_VIA_8233_0: + vt596_features |= FEATURE_I2CBLOCK; + break; + case PCI_DEVICE_ID_VIA_82C686_4: + /* The VT82C686B (rev 0x40) does support I2C block + transactions, but the VT82C686A (rev 0x30) doesn't */ + if (!pci_read_config_byte(pdev, PCI_REVISION_ID, &temp) + && temp >= 0x40) + vt596_features |= FEATURE_I2CBLOCK; + break; + } + vt596_adapter.dev.parent = &pdev->dev; snprintf(vt596_adapter.name, I2C_NAME_SIZE, - "SMBus Via Pro adapter at %04x", vt596_smba); - + "SMBus Via Pro adapter at %04x", vt596_smba); + vt596_pdev = pci_dev_get(pdev); if (i2c_add_adapter(&vt596_adapter)) { pci_dev_put(vt596_pdev); @@ -395,7 +411,7 @@ static int __devinit vt596_probe(struct pci_dev *pdev, */ return -ENODEV; - release_region: +release_region: release_region(vt596_smba, 8); return error; } @@ -420,9 +436,10 @@ static struct pci_device_id vt596_ids[] = { { 0, } }; -MODULE_DEVICE_TABLE (pci, vt596_ids); +MODULE_DEVICE_TABLE(pci, vt596_ids); static struct pci_driver vt596_driver = { + .owner = THIS_MODULE, .name = "vt596_smbus", .id_table = vt596_ids, .probe = vt596_probe, diff --git a/drivers/i2c/busses/i2c-voodoo3.c b/drivers/i2c/busses/i2c-voodoo3.c index b675773b0cc1..650c3ebde84c 100644 --- a/drivers/i2c/busses/i2c-voodoo3.c +++ b/drivers/i2c/busses/i2c-voodoo3.c @@ -225,6 +225,7 @@ static void __devexit voodoo3_remove(struct pci_dev *dev) } static struct pci_driver voodoo3_driver = { + .owner = THIS_MODULE, .name = "voodoo3_smbus", .id_table = voodoo3_ids, .probe = voodoo3_probe, diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c index a1d580e05361..d3478e084522 100644 --- a/drivers/i2c/busses/scx200_acb.c +++ b/drivers/i2c/busses/scx200_acb.c @@ -442,14 +442,13 @@ static int __init scx200_acb_create(int base, int index) int rc = 0; char description[64]; - iface = kmalloc(sizeof(*iface), GFP_KERNEL); + iface = kzalloc(sizeof(*iface), GFP_KERNEL); if (!iface) { printk(KERN_ERR NAME ": can't allocate memory\n"); rc = -ENOMEM; goto errout; } - memset(iface, 0, sizeof(*iface)); adapter = &iface->adapter; i2c_set_adapdata(adapter, iface); snprintf(adapter->name, I2C_NAME_SIZE, "SCx200 ACB%d", index); diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig index 6bd44a44cd28..f9fae28f5612 100644 --- a/drivers/i2c/chips/Kconfig +++ b/drivers/i2c/chips/Kconfig @@ -126,4 +126,13 @@ config SENSORS_MAX6875 This driver can also be built as a module. If so, the module will be called max6875. +config RTC_X1205_I2C + tristate "Xicor X1205 RTC chip" + depends on I2C && EXPERIMENTAL + help + If you say yes here you get support for the Xicor X1205 RTC chip. + + This driver can also be built as a module. If so, the module + will be called x1205. + endmenu diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile index a876dd42b860..46178b57b1f1 100644 --- a/drivers/i2c/chips/Makefile +++ b/drivers/i2c/chips/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o obj-$(CONFIG_SENSORS_RTC8564) += rtc8564.o obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o obj-$(CONFIG_TPS65010) += tps65010.o +obj-$(CONFIG_RTC_X1205_I2C) += x1205.o ifeq ($(CONFIG_I2C_DEBUG_CHIP),y) EXTRA_CFLAGS += -DDEBUG diff --git a/drivers/i2c/chips/ds1337.c b/drivers/i2c/chips/ds1337.c index 9d3175c03395..01b037007410 100644 --- a/drivers/i2c/chips/ds1337.c +++ b/drivers/i2c/chips/ds1337.c @@ -243,11 +243,10 @@ static int ds1337_detect(struct i2c_adapter *adapter, int address, int kind) I2C_FUNC_I2C)) goto exit; - if (!(data = kmalloc(sizeof(struct ds1337_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct ds1337_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct ds1337_data)); INIT_LIST_HEAD(&data->list); /* The common I2C client data is placed right before the diff --git a/drivers/i2c/chips/ds1374.c b/drivers/i2c/chips/ds1374.c index 0936327a946d..da488b735abf 100644 --- a/drivers/i2c/chips/ds1374.c +++ b/drivers/i2c/chips/ds1374.c @@ -167,7 +167,8 @@ static void ds1374_set_tlet(ulong arg) static ulong new_time; -DECLARE_TASKLET_DISABLED(ds1374_tasklet, ds1374_set_tlet, (ulong) & new_time); +static DECLARE_TASKLET_DISABLED(ds1374_tasklet, ds1374_set_tlet, + (ulong) & new_time); int ds1374_set_rtc_time(ulong nowtime) { @@ -193,13 +194,11 @@ static int ds1374_probe(struct i2c_adapter *adap, int addr, int kind) struct i2c_client *client; int rc; - client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); if (!client) return -ENOMEM; - memset(client, 0, sizeof(struct i2c_client)); strncpy(client->name, DS1374_DRV_NAME, I2C_NAME_SIZE); - client->flags = I2C_DF_NOTIFY; client->addr = addr; client->adapter = adap; client->driver = &ds1374_driver; diff --git a/drivers/i2c/chips/eeprom.c b/drivers/i2c/chips/eeprom.c index d58403a47908..4baf573fa04f 100644 --- a/drivers/i2c/chips/eeprom.c +++ b/drivers/i2c/chips/eeprom.c @@ -88,8 +88,8 @@ static void eeprom_update_client(struct i2c_client *client, u8 slice) dev_dbg(&client->dev, "Starting eeprom update, slice %u\n", slice); if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_I2C_BLOCK)) { - for (i = slice << 5; i < (slice + 1) << 5; i += I2C_SMBUS_I2C_BLOCK_MAX) - if (i2c_smbus_read_i2c_block_data(client, i, data->data + i) != I2C_SMBUS_I2C_BLOCK_MAX) + for (i = slice << 5; i < (slice + 1) << 5; i += I2C_SMBUS_BLOCK_MAX) + if (i2c_smbus_read_i2c_block_data(client, i, data->data + i) != I2C_SMBUS_BLOCK_MAX) goto exit; } else { if (i2c_smbus_write_byte(client, slice << 5)) { @@ -155,7 +155,7 @@ static int eeprom_attach_adapter(struct i2c_adapter *adapter) } /* This function is called by i2c_probe */ -int eeprom_detect(struct i2c_adapter *adapter, int address, int kind) +static int eeprom_detect(struct i2c_adapter *adapter, int address, int kind) { struct i2c_client *new_client; struct eeprom_data *data; @@ -171,11 +171,10 @@ int eeprom_detect(struct i2c_adapter *adapter, int address, int kind) | I2C_FUNC_SMBUS_BYTE)) goto exit; - if (!(data = kmalloc(sizeof(struct eeprom_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct eeprom_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct eeprom_data)); new_client = &data->client; memset(data->data, 0xff, EEPROM_SIZE); diff --git a/drivers/i2c/chips/isp1301_omap.c b/drivers/i2c/chips/isp1301_omap.c index 8ee56d4b3891..eaa4742e04fa 100644 --- a/drivers/i2c/chips/isp1301_omap.c +++ b/drivers/i2c/chips/isp1301_omap.c @@ -888,6 +888,7 @@ static int otg_remove(struct device *dev) } struct device_driver omap_otg_driver = { + .owner = THIS_MODULE, .name = "omap_otg", .bus = &platform_bus_type, .probe = otg_probe, diff --git a/drivers/i2c/chips/m41t00.c b/drivers/i2c/chips/m41t00.c index 3f14528a52a9..3df309ae44a6 100644 --- a/drivers/i2c/chips/m41t00.c +++ b/drivers/i2c/chips/m41t00.c @@ -174,13 +174,11 @@ m41t00_probe(struct i2c_adapter *adap, int addr, int kind) struct i2c_client *client; int rc; - client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); if (!client) return -ENOMEM; - memset(client, 0, sizeof(struct i2c_client)); strncpy(client->name, M41T00_DRV_NAME, I2C_NAME_SIZE); - client->flags = I2C_DF_NOTIFY; client->addr = addr; client->adapter = adap; client->driver = &m41t00_driver; diff --git a/drivers/i2c/chips/max6875.c b/drivers/i2c/chips/max6875.c index 9e1aeb69abf9..b376a006883c 100644 --- a/drivers/i2c/chips/max6875.c +++ b/drivers/i2c/chips/max6875.c @@ -179,16 +179,14 @@ static int max6875_detect(struct i2c_adapter *adapter, int address, int kind) if (address & 1) return 0; - if (!(data = kmalloc(sizeof(struct max6875_data), GFP_KERNEL))) + if (!(data = kzalloc(sizeof(struct max6875_data), GFP_KERNEL))) return -ENOMEM; - memset(data, 0, sizeof(struct max6875_data)); /* A fake client is created on the odd address */ - if (!(fake_client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL))) { + if (!(fake_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) { err = -ENOMEM; goto exit_kfree1; } - memset(fake_client, 0, sizeof(struct i2c_client)); /* Init real i2c_client */ real_client = &data->client; diff --git a/drivers/i2c/chips/pca9539.c b/drivers/i2c/chips/pca9539.c index 225577fdda4d..59a930346229 100644 --- a/drivers/i2c/chips/pca9539.c +++ b/drivers/i2c/chips/pca9539.c @@ -122,11 +122,10 @@ static int pca9539_detect(struct i2c_adapter *adapter, int address, int kind) /* OK. For now, we presume we have a valid client. We now create the client structure, even though we cannot fill it completely yet. */ - if (!(data = kmalloc(sizeof(struct pca9539_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct pca9539_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct pca9539_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/i2c/chips/pcf8574.c b/drivers/i2c/chips/pcf8574.c index 6525743ff9fd..c323c2de236c 100644 --- a/drivers/i2c/chips/pcf8574.c +++ b/drivers/i2c/chips/pcf8574.c @@ -115,7 +115,7 @@ static int pcf8574_attach_adapter(struct i2c_adapter *adapter) } /* This function is called by i2c_probe */ -int pcf8574_detect(struct i2c_adapter *adapter, int address, int kind) +static int pcf8574_detect(struct i2c_adapter *adapter, int address, int kind) { struct i2c_client *new_client; struct pcf8574_data *data; @@ -127,11 +127,10 @@ int pcf8574_detect(struct i2c_adapter *adapter, int address, int kind) /* OK. For now, we presume we have a valid client. We now create the client structure, even though we cannot fill it completely yet. */ - if (!(data = kmalloc(sizeof(struct pcf8574_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct pcf8574_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct pcf8574_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/i2c/chips/pcf8591.c b/drivers/i2c/chips/pcf8591.c index 80f1df9a4500..ce420a67560b 100644 --- a/drivers/i2c/chips/pcf8591.c +++ b/drivers/i2c/chips/pcf8591.c @@ -166,7 +166,7 @@ static int pcf8591_attach_adapter(struct i2c_adapter *adapter) } /* This function is called by i2c_probe */ -int pcf8591_detect(struct i2c_adapter *adapter, int address, int kind) +static int pcf8591_detect(struct i2c_adapter *adapter, int address, int kind) { struct i2c_client *new_client; struct pcf8591_data *data; @@ -178,11 +178,10 @@ int pcf8591_detect(struct i2c_adapter *adapter, int address, int kind) /* OK. For now, we presume we have a valid client. We now create the client structure, even though we cannot fill it completely yet. */ - if (!(data = kmalloc(sizeof(struct pcf8591_data), GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(struct pcf8591_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - memset(data, 0, sizeof(struct pcf8591_data)); new_client = &data->client; i2c_set_clientdata(new_client, data); diff --git a/drivers/i2c/chips/rtc8564.c b/drivers/i2c/chips/rtc8564.c index 0b5385c892b1..916cdc1af23c 100644 --- a/drivers/i2c/chips/rtc8564.c +++ b/drivers/i2c/chips/rtc8564.c @@ -148,17 +148,16 @@ static int rtc8564_attach(struct i2c_adapter *adap, int addr, int kind) {addr, I2C_M_RD, 2, data} }; - d = kmalloc(sizeof(struct rtc8564_data), GFP_KERNEL); + d = kzalloc(sizeof(struct rtc8564_data), GFP_KERNEL); if (!d) { ret = -ENOMEM; goto done; } - memset(d, 0, sizeof(struct rtc8564_data)); new_client = &d->client; strlcpy(new_client->name, "RTC8564", I2C_NAME_SIZE); i2c_set_clientdata(new_client, d); - new_client->flags = I2C_CLIENT_ALLOW_USE | I2C_DF_NOTIFY; + new_client->flags = I2C_CLIENT_ALLOW_USE; new_client->addr = addr; new_client->adapter = adap; new_client->driver = &rtc8564_driver; diff --git a/drivers/i2c/chips/tps65010.c b/drivers/i2c/chips/tps65010.c index 280e9638c0f8..280dd7a45db6 100644 --- a/drivers/i2c/chips/tps65010.c +++ b/drivers/i2c/chips/tps65010.c @@ -500,11 +500,10 @@ tps65010_probe(struct i2c_adapter *bus, int address, int kind) return 0; } - tps = kmalloc(sizeof *tps, GFP_KERNEL); + tps = kzalloc(sizeof *tps, GFP_KERNEL); if (!tps) return 0; - memset(tps, 0, sizeof *tps); init_MUTEX(&tps->lock); INIT_WORK(&tps->work, tps65010_work, tps); tps->irq = -1; diff --git a/drivers/i2c/chips/x1205.c b/drivers/i2c/chips/x1205.c new file mode 100644 index 000000000000..7da366cdc18c --- /dev/null +++ b/drivers/i2c/chips/x1205.c @@ -0,0 +1,698 @@ +/* + * x1205.c - An i2c driver for the Xicor X1205 RTC + * Copyright 2004 Karen Spearel + * Copyright 2005 Alessandro Zummo + * + * please send all reports to: + * kas11 at tampabay dot rr dot com + * a dot zummo at towertech dot it + * + * based on the other drivers in this same directory. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/string.h> +#include <linux/bcd.h> +#include <linux/rtc.h> +#include <linux/list.h> + +#include <linux/x1205.h> + +#define DRV_VERSION "0.9.9" + +/* Addresses to scan: none. This chip is located at + * 0x6f and uses a two bytes register addressing. + * Two bytes need to be written to read a single register, + * while most other chips just require one and take the second + * one as the data to be written. To prevent corrupting + * unknown chips, the user must explicitely set the probe parameter. + */ + +static unsigned short normal_i2c[] = { I2C_CLIENT_END }; + +/* Insmod parameters */ +I2C_CLIENT_INSMOD; +I2C_CLIENT_MODULE_PARM(hctosys, + "Set the system time from the hardware clock upon initialization"); + +/* offsets into CCR area */ + +#define CCR_SEC 0 +#define CCR_MIN 1 +#define CCR_HOUR 2 +#define CCR_MDAY 3 +#define CCR_MONTH 4 +#define CCR_YEAR 5 +#define CCR_WDAY 6 +#define CCR_Y2K 7 + +#define X1205_REG_SR 0x3F /* status register */ +#define X1205_REG_Y2K 0x37 +#define X1205_REG_DW 0x36 +#define X1205_REG_YR 0x35 +#define X1205_REG_MO 0x34 +#define X1205_REG_DT 0x33 +#define X1205_REG_HR 0x32 +#define X1205_REG_MN 0x31 +#define X1205_REG_SC 0x30 +#define X1205_REG_DTR 0x13 +#define X1205_REG_ATR 0x12 +#define X1205_REG_INT 0x11 +#define X1205_REG_0 0x10 +#define X1205_REG_Y2K1 0x0F +#define X1205_REG_DWA1 0x0E +#define X1205_REG_YRA1 0x0D +#define X1205_REG_MOA1 0x0C +#define X1205_REG_DTA1 0x0B +#define X1205_REG_HRA1 0x0A +#define X1205_REG_MNA1 0x09 +#define X1205_REG_SCA1 0x08 +#define X1205_REG_Y2K0 0x07 +#define X1205_REG_DWA0 0x06 +#define X1205_REG_YRA0 0x05 +#define X1205_REG_MOA0 0x04 +#define X1205_REG_DTA0 0x03 +#define X1205_REG_HRA0 0x02 +#define X1205_REG_MNA0 0x01 +#define X1205_REG_SCA0 0x00 + +#define X1205_CCR_BASE 0x30 /* Base address of CCR */ +#define X1205_ALM0_BASE 0x00 /* Base address of ALARM0 */ + +#define X1205_SR_RTCF 0x01 /* Clock failure */ +#define X1205_SR_WEL 0x02 /* Write Enable Latch */ +#define X1205_SR_RWEL 0x04 /* Register Write Enable */ + +#define X1205_DTR_DTR0 0x01 +#define X1205_DTR_DTR1 0x02 +#define X1205_DTR_DTR2 0x04 + +#define X1205_HR_MIL 0x80 /* Set in ccr.hour for 24 hr mode */ + +/* Prototypes */ +static int x1205_attach(struct i2c_adapter *adapter); +static int x1205_detach(struct i2c_client *client); +static int x1205_probe(struct i2c_adapter *adapter, int address, int kind); +static int x1205_command(struct i2c_client *client, unsigned int cmd, + void *arg); + +static struct i2c_driver x1205_driver = { + .owner = THIS_MODULE, + .name = "x1205", + .flags = I2C_DF_NOTIFY, + .attach_adapter = &x1205_attach, + .detach_client = &x1205_detach, +}; + +struct x1205_data { + struct i2c_client client; + struct list_head list; + unsigned int epoch; +}; + +static const unsigned char days_in_mo[] = + { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; + +static LIST_HEAD(x1205_clients); + +/* Workaround until the I2C subsytem will allow to send + * commands to a specific client. This function will send the command + * to the first client. + */ +int x1205_do_command(unsigned int cmd, void *arg) +{ + struct list_head *walk; + struct list_head *tmp; + struct x1205_data *data; + + list_for_each_safe(walk, tmp, &x1205_clients) { + data = list_entry(walk, struct x1205_data, list); + return x1205_command(&data->client, cmd, arg); + } + + return -ENODEV; +} + +#define is_leap(year) \ + ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) + +/* make sure the rtc_time values are in bounds */ +static int x1205_validate_tm(struct rtc_time *tm) +{ + int year = tm->tm_year + 1900; + + if ((tm->tm_year < 70) || (tm->tm_year > 255)) + return -EINVAL; + + if ((tm->tm_mon > 11) || (tm->tm_mday == 0)) + return -EINVAL; + + if (tm->tm_mday > days_in_mo[tm->tm_mon] + + ((tm->tm_mon == 1) && is_leap(year))) + return -EINVAL; + + if ((tm->tm_hour >= 24) || (tm->tm_min >= 60) || (tm->tm_sec >= 60)) + return -EINVAL; + + return 0; +} + +/* + * In the routines that deal directly with the x1205 hardware, we use + * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch + * Epoch is initialized as 2000. Time is set to UTC. + */ +static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm, + u8 reg_base) +{ + unsigned char dt_addr[2] = { 0, reg_base }; + static unsigned char sr_addr[2] = { 0, X1205_REG_SR }; + + unsigned char buf[8], sr; + + struct i2c_msg msgs[] = { + { client->addr, 0, 2, sr_addr }, /* setup read ptr */ + { client->addr, I2C_M_RD, 1, &sr }, /* read status */ + { client->addr, 0, 2, dt_addr }, /* setup read ptr */ + { client->addr, I2C_M_RD, 8, buf }, /* read date */ + }; + + struct x1205_data *data = i2c_get_clientdata(client); + + /* read status register */ + if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { + dev_err(&client->dev, "%s: read error\n", __FUNCTION__); + return -EIO; + } + + /* check for battery failure */ + if (sr & X1205_SR_RTCF) { + dev_warn(&client->dev, + "Clock had a power failure, you must set the date.\n"); + return -EINVAL; + } + + /* read date registers */ + if ((i2c_transfer(client->adapter, &msgs[2], 2)) != 2) { + dev_err(&client->dev, "%s: read error\n", __FUNCTION__); + return -EIO; + } + + dev_dbg(&client->dev, + "%s: raw read data - sec=%02x, min=%02x, hr=%02x, " + "mday=%02x, mon=%02x, year=%02x, wday=%02x, y2k=%02x\n", + __FUNCTION__, + buf[0], buf[1], buf[2], buf[3], + buf[4], buf[5], buf[6], buf[7]); + + tm->tm_sec = BCD2BIN(buf[CCR_SEC]); + tm->tm_min = BCD2BIN(buf[CCR_MIN]); + tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */ + tm->tm_mday = BCD2BIN(buf[CCR_MDAY]); + tm->tm_mon = BCD2BIN(buf[CCR_MONTH]); + data->epoch = BCD2BIN(buf[CCR_Y2K]) * 100; + tm->tm_year = BCD2BIN(buf[CCR_YEAR]) + data->epoch - 1900; + tm->tm_wday = buf[CCR_WDAY]; + + dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, " + "mday=%d, mon=%d, year=%d, wday=%d\n", + __FUNCTION__, + tm->tm_sec, tm->tm_min, tm->tm_hour, + tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); + + return 0; +} + +static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, + int datetoo, u8 reg_base) +{ + int i, err, xfer; + + unsigned char buf[8]; + + static const unsigned char wel[3] = { 0, X1205_REG_SR, + X1205_SR_WEL }; + + static const unsigned char rwel[3] = { 0, X1205_REG_SR, + X1205_SR_WEL | X1205_SR_RWEL }; + + static const unsigned char diswe[3] = { 0, X1205_REG_SR, 0 }; + + struct x1205_data *data = i2c_get_clientdata(client); + + /* check if all values in the tm struct are correct */ + if ((err = x1205_validate_tm(tm)) < 0) + return err; + + dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, " + "mday=%d, mon=%d, year=%d, wday=%d\n", + __FUNCTION__, + tm->tm_sec, tm->tm_min, tm->tm_hour, + tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); + + buf[CCR_SEC] = BIN2BCD(tm->tm_sec); + buf[CCR_MIN] = BIN2BCD(tm->tm_min); + + /* set hour and 24hr bit */ + buf[CCR_HOUR] = BIN2BCD(tm->tm_hour) | X1205_HR_MIL; + + /* should we also set the date? */ + if (datetoo) { + buf[CCR_MDAY] = BIN2BCD(tm->tm_mday); + + /* month, 0 - 11 */ + buf[CCR_MONTH] = BIN2BCD(tm->tm_mon); + + /* year, since 1900 */ + buf[CCR_YEAR] = BIN2BCD(tm->tm_year + 1900 - data->epoch); + buf[CCR_WDAY] = tm->tm_wday & 0x07; + buf[CCR_Y2K] = BIN2BCD(data->epoch / 100); + } + + /* this sequence is required to unlock the chip */ + xfer = i2c_master_send(client, wel, 3); + if (xfer != 3) { + dev_err(&client->dev, "%s: wel - %d\n", __FUNCTION__, xfer); + return -EIO; + } + + xfer = i2c_master_send(client, rwel, 3); + if (xfer != 3) { + dev_err(&client->dev, "%s: rwel - %d\n", __FUNCTION__, xfer); + return -EIO; + } + + /* write register's data */ + for (i = 0; i < (datetoo ? 8 : 3); i++) { + unsigned char rdata[3] = { 0, reg_base + i, buf[i] }; + + xfer = i2c_master_send(client, rdata, 3); + if (xfer != 3) { + dev_err(&client->dev, + "%s: xfer=%d addr=%02x, data=%02x\n", + __FUNCTION__, + xfer, rdata[1], rdata[2]); + return -EIO; + } + }; + + /* disable further writes */ + xfer = i2c_master_send(client, diswe, 3); + if (xfer != 3) { + dev_err(&client->dev, "%s: diswe - %d\n", __FUNCTION__, xfer); + return -EIO; + } + + return 0; +} + +static int x1205_get_dtrim(struct i2c_client *client, int *trim) +{ + unsigned char dtr; + static unsigned char dtr_addr[2] = { 0, X1205_REG_DTR }; + + struct i2c_msg msgs[] = { + { client->addr, 0, 2, dtr_addr }, /* setup read ptr */ + { client->addr, I2C_M_RD, 1, &dtr }, /* read dtr */ + }; + + /* read dtr register */ + if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { + dev_err(&client->dev, "%s: read error\n", __FUNCTION__); + return -EIO; + } + + dev_dbg(&client->dev, "%s: raw dtr=%x\n", __FUNCTION__, dtr); + + *trim = 0; + + if (dtr & X1205_DTR_DTR0) + *trim += 20; + + if (dtr & X1205_DTR_DTR1) + *trim += 10; + + if (dtr & X1205_DTR_DTR2) + *trim = -*trim; + + return 0; +} + +static int x1205_get_atrim(struct i2c_client *client, int *trim) +{ + s8 atr; + static unsigned char atr_addr[2] = { 0, X1205_REG_ATR }; + + struct i2c_msg msgs[] = { + { client->addr, 0, 2, atr_addr }, /* setup read ptr */ + { client->addr, I2C_M_RD, 1, &atr }, /* read atr */ + }; + + /* read atr register */ + if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { + dev_err(&client->dev, "%s: read error\n", __FUNCTION__); + return -EIO; + } + + dev_dbg(&client->dev, "%s: raw atr=%x\n", __FUNCTION__, atr); + + /* atr is a two's complement value on 6 bits, + * perform sign extension. The formula is + * Catr = (atr * 0.25pF) + 11.00pF. + */ + if (atr & 0x20) + atr |= 0xC0; + + dev_dbg(&client->dev, "%s: raw atr=%x (%d)\n", __FUNCTION__, atr, atr); + + *trim = (atr * 250) + 11000; + + dev_dbg(&client->dev, "%s: real=%d\n", __FUNCTION__, *trim); + + return 0; +} + +static int x1205_hctosys(struct i2c_client *client) +{ + int err; + + struct rtc_time tm; + struct timespec tv; + + err = x1205_command(client, X1205_CMD_GETDATETIME, &tm); + + if (err) { + dev_err(&client->dev, + "Unable to set the system clock\n"); + return err; + } + + /* IMPORTANT: the RTC only stores whole seconds. It is arbitrary + * whether it stores the most close value or the value with partial + * seconds truncated. However, it is important that we use it to store + * the truncated value. This is because otherwise it is necessary, + * in an rtc sync function, to read both xtime.tv_sec and + * xtime.tv_nsec. On some processors (i.e. ARM), an atomic read + * of >32bits is not possible. So storing the most close value would + * slow down the sync API. So here we have the truncated value and + * the best guess is to add 0.5s. + */ + + tv.tv_nsec = NSEC_PER_SEC >> 1; + + /* WARNING: this is not the C library 'mktime' call, it is a built in + * inline function from include/linux/time.h. It expects (requires) + * the month to be in the range 1-12 + */ + + tv.tv_sec = mktime(tm.tm_year + 1900, tm.tm_mon + 1, + tm.tm_mday, tm.tm_hour, + tm.tm_min, tm.tm_sec); + + do_settimeofday(&tv); + + dev_info(&client->dev, + "setting the system clock to %d-%d-%d %d:%d:%d\n", + tm.tm_year + 1900, tm.tm_mon + 1, + tm.tm_mday, tm.tm_hour, tm.tm_min, + tm.tm_sec); + + return 0; +} + +struct x1205_limit +{ + unsigned char reg; + unsigned char mask; + unsigned char min; + unsigned char max; +}; + +static int x1205_validate_client(struct i2c_client *client) +{ + int i, xfer; + + /* Probe array. We will read the register at the specified + * address and check if the given bits are zero. + */ + static const unsigned char probe_zero_pattern[] = { + /* register, mask */ + X1205_REG_SR, 0x18, + X1205_REG_DTR, 0xF8, + X1205_REG_ATR, 0xC0, + X1205_REG_INT, 0x18, + X1205_REG_0, 0xFF, + }; + + static const struct x1205_limit probe_limits_pattern[] = { + /* register, mask, min, max */ + { X1205_REG_Y2K, 0xFF, 19, 20 }, + { X1205_REG_DW, 0xFF, 0, 6 }, + { X1205_REG_YR, 0xFF, 0, 99 }, + { X1205_REG_MO, 0xFF, 0, 12 }, + { X1205_REG_DT, 0xFF, 0, 31 }, + { X1205_REG_HR, 0x7F, 0, 23 }, + { X1205_REG_MN, 0xFF, 0, 59 }, + { X1205_REG_SC, 0xFF, 0, 59 }, + { X1205_REG_Y2K1, 0xFF, 19, 20 }, + { X1205_REG_Y2K0, 0xFF, 19, 20 }, + }; + + /* check that registers have bits a 0 where expected */ + for (i = 0; i < ARRAY_SIZE(probe_zero_pattern); i += 2) { + unsigned char buf; + + unsigned char addr[2] = { 0, probe_zero_pattern[i] }; + + struct i2c_msg msgs[2] = { + { client->addr, 0, 2, addr }, + { client->addr, I2C_M_RD, 1, &buf }, + }; + + xfer = i2c_transfer(client->adapter, msgs, 2); + if (xfer != 2) { + dev_err(&client->adapter->dev, + "%s: could not read register %x\n", + __FUNCTION__, addr[1]); + + return -EIO; + } + + if ((buf & probe_zero_pattern[i+1]) != 0) { + dev_err(&client->adapter->dev, + "%s: register=%02x, zero pattern=%d, value=%x\n", + __FUNCTION__, addr[1], i, buf); + + return -ENODEV; + } + } + + /* check limits (only registers with bcd values) */ + for (i = 0; i < ARRAY_SIZE(probe_limits_pattern); i++) { + unsigned char reg, value; + + unsigned char addr[2] = { 0, probe_limits_pattern[i].reg }; + + struct i2c_msg msgs[2] = { + { client->addr, 0, 2, addr }, + { client->addr, I2C_M_RD, 1, ® }, + }; + + xfer = i2c_transfer(client->adapter, msgs, 2); + + if (xfer != 2) { + dev_err(&client->adapter->dev, + "%s: could not read register %x\n", + __FUNCTION__, addr[1]); + + return -EIO; + } + + value = BCD2BIN(reg & probe_limits_pattern[i].mask); + + if (value > probe_limits_pattern[i].max || + value < probe_limits_pattern[i].min) { + dev_dbg(&client->adapter->dev, + "%s: register=%x, lim pattern=%d, value=%d\n", + __FUNCTION__, addr[1], i, value); + + return -ENODEV; + } + } + + return 0; +} + +static int x1205_attach(struct i2c_adapter *adapter) +{ + dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); + + return i2c_probe(adapter, &addr_data, x1205_probe); +} + +int x1205_direct_attach(int adapter_id, + struct i2c_client_address_data *address_data) +{ + int err; + struct i2c_adapter *adapter = i2c_get_adapter(adapter_id); + + if (adapter) { + err = i2c_probe(adapter, + address_data, x1205_probe); + + i2c_put_adapter(adapter); + + return err; + } + + return -ENODEV; +} + +static int x1205_probe(struct i2c_adapter *adapter, int address, int kind) +{ + struct i2c_client *client; + struct x1205_data *data; + + int err = 0; + + dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); + + if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { + err = -ENODEV; + goto exit; + } + + if (!(data = kzalloc(sizeof(struct x1205_data), GFP_KERNEL))) { + err = -ENOMEM; + goto exit; + } + + /* Initialize our structures */ + data->epoch = 2000; + + client = &data->client; + client->addr = address; + client->driver = &x1205_driver; + client->adapter = adapter; + + strlcpy(client->name, "x1205", I2C_NAME_SIZE); + + i2c_set_clientdata(client, data); + + /* Verify the chip is really an X1205 */ + if (kind < 0) { + if (x1205_validate_client(client) < 0) { + err = -ENODEV; + goto exit_kfree; + } + } + + /* Inform the i2c layer */ + if ((err = i2c_attach_client(client))) + goto exit_kfree; + + list_add(&data->list, &x1205_clients); + + dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n"); + + /* If requested, set the system time */ + if (hctosys) + x1205_hctosys(client); + + return 0; + +exit_kfree: + kfree(data); + +exit: + return err; +} + +static int x1205_detach(struct i2c_client *client) +{ + int err; + struct x1205_data *data = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "%s\n", __FUNCTION__); + + if ((err = i2c_detach_client(client))) + return err; + + list_del(&data->list); + + kfree(data); + + return 0; +} + +static int x1205_command(struct i2c_client *client, unsigned int cmd, + void *param) +{ + if (param == NULL) + return -EINVAL; + + if (!capable(CAP_SYS_TIME)) + return -EACCES; + + dev_dbg(&client->dev, "%s: cmd=%d\n", __FUNCTION__, cmd); + + switch (cmd) { + case X1205_CMD_GETDATETIME: + return x1205_get_datetime(client, param, X1205_CCR_BASE); + + case X1205_CMD_SETTIME: + return x1205_set_datetime(client, param, 0, + X1205_CCR_BASE); + + case X1205_CMD_SETDATETIME: + return x1205_set_datetime(client, param, 1, + X1205_CCR_BASE); + + case X1205_CMD_GETALARM: + return x1205_get_datetime(client, param, X1205_ALM0_BASE); + + case X1205_CMD_SETALARM: + return x1205_set_datetime(client, param, 1, + X1205_ALM0_BASE); + + case X1205_CMD_GETDTRIM: + return x1205_get_dtrim(client, param); + + case X1205_CMD_GETATRIM: + return x1205_get_atrim(client, param); + + default: + return -EINVAL; + } +} + +static int __init x1205_init(void) +{ + return i2c_add_driver(&x1205_driver); +} + +static void __exit x1205_exit(void) +{ + i2c_del_driver(&x1205_driver); +} + +MODULE_AUTHOR( + "Karen Spearel <kas11@tampabay.rr.com>, " + "Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("Xicor X1205 RTC driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); + +EXPORT_SYMBOL_GPL(x1205_do_command); +EXPORT_SYMBOL_GPL(x1205_direct_attach); + +module_init(x1205_init); +module_exit(x1205_exit); diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index dda472e5e8be..02e335a04f09 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -19,7 +19,8 @@ /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi>. All SMBus-related things are written by Frodo Looijaard <frodol@dds.nl> - SMBus 2.0 support by Mark Studebaker <mdsxyz123@yahoo.com> */ + SMBus 2.0 support by Mark Studebaker <mdsxyz123@yahoo.com> and + Jean Delvare <khali@linux-fr.org> */ #include <linux/module.h> #include <linux/kernel.h> @@ -48,7 +49,7 @@ static int i2c_bus_suspend(struct device * dev, pm_message_t state) int rc = 0; if (dev->driver && dev->driver->suspend) - rc = dev->driver->suspend(dev,state,0); + rc = dev->driver->suspend(dev, state); return rc; } @@ -57,7 +58,7 @@ static int i2c_bus_resume(struct device * dev) int rc = 0; if (dev->driver && dev->driver->resume) - rc = dev->driver->resume(dev,0); + rc = dev->driver->resume(dev); return rc; } @@ -85,6 +86,7 @@ void i2c_adapter_dev_release(struct device *dev) } struct device_driver i2c_adapter_driver = { + .owner = THIS_MODULE, .name = "i2c_adapter", .bus = &i2c_bus_type, .probe = i2c_device_probe, @@ -98,6 +100,7 @@ static void i2c_adapter_class_dev_release(struct class_device *dev) } struct class i2c_adapter_class = { + .owner = THIS_MODULE, .name = "i2c-adapter", .release = &i2c_adapter_class_dev_release, }; @@ -291,6 +294,7 @@ int i2c_add_driver(struct i2c_driver *driver) down(&core_lists); /* add the driver to the list of i2c drivers in the driver core */ + driver->driver.owner = driver->owner; driver->driver.name = driver->name; driver->driver.bus = &i2c_bus_type; driver->driver.probe = i2c_device_probe; @@ -706,10 +710,6 @@ int i2c_probe(struct i2c_adapter *adapter, int i, err; int adap_id = i2c_adapter_id(adapter); - /* Forget it if we can't probe using SMBUS_QUICK */ - if (! i2c_check_functionality(adapter,I2C_FUNC_SMBUS_QUICK)) - return -1; - /* Force entries are done first, and are not affected by ignore entries */ if (address_data->forces) { @@ -736,6 +736,17 @@ int i2c_probe(struct i2c_adapter *adapter, } } + /* Stop here if we can't use SMBUS_QUICK */ + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_QUICK)) { + if (address_data->probe[0] == I2C_CLIENT_END + && address_data->normal_i2c[0] == I2C_CLIENT_END) + return 0; + + dev_warn(&adapter->dev, "SMBus Quick command not supported, " + "can't probe for chips\n"); + return -1; + } + /* Probe entries are done second, and are not affected by ignore entries either */ for (i = 0; address_data->probe[i] != I2C_CLIENT_END; i += 2) { @@ -820,101 +831,44 @@ crc8(u16 data) return (u8)(data >> 8); } -/* CRC over count bytes in the first array plus the bytes in the rest - array if it is non-null. rest[0] is the (length of rest) - 1 - and is included. */ -static u8 i2c_smbus_partial_pec(u8 crc, int count, u8 *first, u8 *rest) +/* Incremental CRC8 over count bytes in the array pointed to by p */ +static u8 i2c_smbus_pec(u8 crc, u8 *p, size_t count) { int i; for(i = 0; i < count; i++) - crc = crc8((crc ^ first[i]) << 8); - if(rest != NULL) - for(i = 0; i <= rest[0]; i++) - crc = crc8((crc ^ rest[i]) << 8); + crc = crc8((crc ^ p[i]) << 8); return crc; } -static u8 i2c_smbus_pec(int count, u8 *first, u8 *rest) +/* Assume a 7-bit address, which is reasonable for SMBus */ +static u8 i2c_smbus_msg_pec(u8 pec, struct i2c_msg *msg) { - return i2c_smbus_partial_pec(0, count, first, rest); + /* The address will be sent first */ + u8 addr = (msg->addr << 1) | !!(msg->flags & I2C_M_RD); + pec = i2c_smbus_pec(pec, &addr, 1); + + /* The data buffer follows */ + return i2c_smbus_pec(pec, msg->buf, msg->len); } -/* Returns new "size" (transaction type) - Note that we convert byte to byte_data and byte_data to word_data - rather than invent new xxx_PEC transactions. */ -static int i2c_smbus_add_pec(u16 addr, u8 command, int size, - union i2c_smbus_data *data) +/* Used for write only transactions */ +static inline void i2c_smbus_add_pec(struct i2c_msg *msg) { - u8 buf[3]; - - buf[0] = addr << 1; - buf[1] = command; - switch(size) { - case I2C_SMBUS_BYTE: - data->byte = i2c_smbus_pec(2, buf, NULL); - size = I2C_SMBUS_BYTE_DATA; - break; - case I2C_SMBUS_BYTE_DATA: - buf[2] = data->byte; - data->word = buf[2] || - (i2c_smbus_pec(3, buf, NULL) << 8); - size = I2C_SMBUS_WORD_DATA; - break; - case I2C_SMBUS_WORD_DATA: - /* unsupported */ - break; - case I2C_SMBUS_BLOCK_DATA: - data->block[data->block[0] + 1] = - i2c_smbus_pec(2, buf, data->block); - size = I2C_SMBUS_BLOCK_DATA_PEC; - break; - } - return size; + msg->buf[msg->len] = i2c_smbus_msg_pec(0, msg); + msg->len++; } -static int i2c_smbus_check_pec(u16 addr, u8 command, int size, u8 partial, - union i2c_smbus_data *data) +/* Return <0 on CRC error + If there was a write before this read (most cases) we need to take the + partial CRC from the write part into account. + Note that this function does modify the message (we need to decrease the + message length to hide the CRC byte from the caller). */ +static int i2c_smbus_check_pec(u8 cpec, struct i2c_msg *msg) { - u8 buf[3], rpec, cpec; + u8 rpec = msg->buf[--msg->len]; + cpec = i2c_smbus_msg_pec(cpec, msg); - buf[1] = command; - switch(size) { - case I2C_SMBUS_BYTE_DATA: - buf[0] = (addr << 1) | 1; - cpec = i2c_smbus_pec(2, buf, NULL); - rpec = data->byte; - break; - case I2C_SMBUS_WORD_DATA: - buf[0] = (addr << 1) | 1; - buf[2] = data->word & 0xff; - cpec = i2c_smbus_pec(3, buf, NULL); - rpec = data->word >> 8; - break; - case I2C_SMBUS_WORD_DATA_PEC: - /* unsupported */ - cpec = rpec = 0; - break; - case I2C_SMBUS_PROC_CALL_PEC: - /* unsupported */ - cpec = rpec = 0; - break; - case I2C_SMBUS_BLOCK_DATA_PEC: - buf[0] = (addr << 1); - buf[2] = (addr << 1) | 1; - cpec = i2c_smbus_pec(3, buf, data->block); - rpec = data->block[data->block[0] + 1]; - break; - case I2C_SMBUS_BLOCK_PROC_CALL_PEC: - buf[0] = (addr << 1) | 1; - rpec = i2c_smbus_partial_pec(partial, 1, - buf, data->block); - cpec = data->block[data->block[0] + 1]; - break; - default: - cpec = rpec = 0; - break; - } if (rpec != cpec) { pr_debug("i2c-core: Bad PEC 0x%02x vs. 0x%02x\n", rpec, cpec); @@ -941,9 +895,8 @@ s32 i2c_smbus_read_byte(struct i2c_client *client) s32 i2c_smbus_write_byte(struct i2c_client *client, u8 value) { - union i2c_smbus_data data; /* only for PEC */ return i2c_smbus_xfer(client->adapter,client->addr,client->flags, - I2C_SMBUS_WRITE,value, I2C_SMBUS_BYTE,&data); + I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL); } s32 i2c_smbus_read_byte_data(struct i2c_client *client, u8 command) @@ -1026,13 +979,14 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr, need to use only one message; when reading, we need two. We initialize most things with sane defaults, to keep the code below somewhat simpler. */ - unsigned char msgbuf0[34]; - unsigned char msgbuf1[34]; + unsigned char msgbuf0[I2C_SMBUS_BLOCK_MAX+3]; + unsigned char msgbuf1[I2C_SMBUS_BLOCK_MAX+2]; int num = read_write == I2C_SMBUS_READ?2:1; struct i2c_msg msg[2] = { { addr, flags, 1, msgbuf0 }, { addr, flags | I2C_M_RD, 0, msgbuf1 } }; int i; + u8 partial_pec = 0; msgbuf0[0] = command; switch(size) { @@ -1075,7 +1029,6 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr, msgbuf0[2] = (data->word >> 8) & 0xff; break; case I2C_SMBUS_BLOCK_DATA: - case I2C_SMBUS_BLOCK_DATA_PEC: if (read_write == I2C_SMBUS_READ) { dev_err(&adapter->dev, "Block read not supported " "under I2C emulation!\n"); @@ -1088,23 +1041,20 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr, data->block[0]); return -1; } - if(size == I2C_SMBUS_BLOCK_DATA_PEC) - (msg[0].len)++; - for (i = 1; i <= msg[0].len; i++) + for (i = 1; i < msg[0].len; i++) msgbuf0[i] = data->block[i-1]; } break; case I2C_SMBUS_BLOCK_PROC_CALL: - case I2C_SMBUS_BLOCK_PROC_CALL_PEC: dev_dbg(&adapter->dev, "Block process call not supported " "under I2C emulation!\n"); return -1; case I2C_SMBUS_I2C_BLOCK_DATA: if (read_write == I2C_SMBUS_READ) { - msg[1].len = I2C_SMBUS_I2C_BLOCK_MAX; + msg[1].len = I2C_SMBUS_BLOCK_MAX; } else { msg[0].len = data->block[0] + 1; - if (msg[0].len > I2C_SMBUS_I2C_BLOCK_MAX + 1) { + if (msg[0].len > I2C_SMBUS_BLOCK_MAX + 1) { dev_err(&adapter->dev, "i2c_smbus_xfer_emulated called with " "invalid block write size (%d)\n", data->block[0]); @@ -1120,9 +1070,30 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr, return -1; } + i = ((flags & I2C_CLIENT_PEC) && size != I2C_SMBUS_QUICK + && size != I2C_SMBUS_I2C_BLOCK_DATA); + if (i) { + /* Compute PEC if first message is a write */ + if (!(msg[0].flags & I2C_M_RD)) { + if (num == 1) /* Write only */ + i2c_smbus_add_pec(&msg[0]); + else /* Write followed by read */ + partial_pec = i2c_smbus_msg_pec(0, &msg[0]); + } + /* Ask for PEC if last message is a read */ + if (msg[num-1].flags & I2C_M_RD) + msg[num-1].len++; + } + if (i2c_transfer(adapter, msg, num) < 0) return -1; + /* Check PEC if last message is a read */ + if (i && (msg[num-1].flags & I2C_M_RD)) { + if (i2c_smbus_check_pec(partial_pec, &msg[num-1]) < 0) + return -1; + } + if (read_write == I2C_SMBUS_READ) switch(size) { case I2C_SMBUS_BYTE: @@ -1137,8 +1108,8 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr, break; case I2C_SMBUS_I2C_BLOCK_DATA: /* fixed at 32 for now */ - data->block[0] = I2C_SMBUS_I2C_BLOCK_MAX; - for (i = 0; i < I2C_SMBUS_I2C_BLOCK_MAX; i++) + data->block[0] = I2C_SMBUS_BLOCK_MAX; + for (i = 0; i < I2C_SMBUS_BLOCK_MAX; i++) data->block[i+1] = msgbuf1[i]; break; } @@ -1151,28 +1122,8 @@ s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags, union i2c_smbus_data * data) { s32 res; - int swpec = 0; - u8 partial = 0; flags &= I2C_M_TEN | I2C_CLIENT_PEC; - if((flags & I2C_CLIENT_PEC) && - !(i2c_check_functionality(adapter, I2C_FUNC_SMBUS_HWPEC_CALC))) { - swpec = 1; - if(read_write == I2C_SMBUS_READ && - size == I2C_SMBUS_BLOCK_DATA) - size = I2C_SMBUS_BLOCK_DATA_PEC; - else if(size == I2C_SMBUS_PROC_CALL) - size = I2C_SMBUS_PROC_CALL_PEC; - else if(size == I2C_SMBUS_BLOCK_PROC_CALL) { - i2c_smbus_add_pec(addr, command, - I2C_SMBUS_BLOCK_DATA, data); - partial = data->block[data->block[0] + 1]; - size = I2C_SMBUS_BLOCK_PROC_CALL_PEC; - } else if(read_write == I2C_SMBUS_WRITE && - size != I2C_SMBUS_QUICK && - size != I2C_SMBUS_I2C_BLOCK_DATA) - size = i2c_smbus_add_pec(addr, command, size, data); - } if (adapter->algo->smbus_xfer) { down(&adapter->bus_lock); @@ -1183,13 +1134,6 @@ s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags, res = i2c_smbus_xfer_emulated(adapter,addr,flags,read_write, command,size,data); - if(res >= 0 && swpec && - size != I2C_SMBUS_QUICK && size != I2C_SMBUS_I2C_BLOCK_DATA && - (read_write == I2C_SMBUS_READ || size == I2C_SMBUS_PROC_CALL_PEC || - size == I2C_SMBUS_BLOCK_PROC_CALL_PEC)) { - if(i2c_smbus_check_pec(addr, command, size, partial, data)) - return -1; - } return res; } diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index aa7a4fadef64..ea14c8f1c82b 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c @@ -26,15 +26,11 @@ /* The I2C_RDWR ioctl code is written by Kolja Waschk <waschk@telos.de> */ -/* The devfs code is contributed by Philipp Matthias Hahn - <pmhahn@titan.lahn.de> */ - #include <linux/kernel.h> #include <linux/module.h> #include <linux/fs.h> #include <linux/slab.h> #include <linux/smp_lock.h> -#include <linux/devfs_fs_kernel.h> #include <linux/init.h> #include <linux/i2c.h> #include <linux/i2c-dev.h> @@ -80,10 +76,9 @@ static struct i2c_dev *get_free_i2c_dev(struct i2c_adapter *adap) { struct i2c_dev *i2c_dev; - i2c_dev = kmalloc(sizeof(*i2c_dev), GFP_KERNEL); + i2c_dev = kzalloc(sizeof(*i2c_dev), GFP_KERNEL); if (!i2c_dev) return ERR_PTR(-ENOMEM); - memset(i2c_dev, 0x00, sizeof(*i2c_dev)); spin_lock(&i2c_dev_array_lock); if (i2c_dev_array[adap->nr]) { @@ -177,8 +172,8 @@ static int i2cdev_ioctl(struct inode *inode, struct file *file, int i,datasize,res; unsigned long funcs; - dev_dbg(&client->adapter->dev, "i2c-%d ioctl, cmd: 0x%x, arg: %lx.\n", - iminor(inode),cmd, arg); + dev_dbg(&client->adapter->dev, "ioctl, cmd=0x%02x, arg=0x%02lx\n", + cmd, arg); switch ( cmd ) { case I2C_SLAVE: @@ -432,8 +427,6 @@ static int i2cdev_attach_adapter(struct i2c_adapter *adap) if (IS_ERR(i2c_dev)) return PTR_ERR(i2c_dev); - devfs_mk_cdev(MKDEV(I2C_MAJOR, i2c_dev->minor), - S_IFCHR|S_IRUSR|S_IWUSR, "i2c/%d", i2c_dev->minor); pr_debug("i2c-dev: adapter [%s] registered as minor %d\n", adap->name, i2c_dev->minor); @@ -466,7 +459,6 @@ static int i2cdev_detach_adapter(struct i2c_adapter *adap) return -ENODEV; init_completion(&i2c_dev->released); - devfs_remove("i2c/%d", i2c_dev->minor); return_i2c_dev(i2c_dev); class_device_unregister(&i2c_dev->class_dev); wait_for_completion(&i2c_dev->released); @@ -522,8 +514,6 @@ static int __init i2c_dev_init(void) if (res) goto out_unreg_class; - devfs_mk_dir("i2c"); - return 0; out_unreg_class: @@ -539,7 +529,6 @@ static void __exit i2c_dev_exit(void) { i2c_del_driver(&i2cdev_driver); class_unregister(&i2c_dev_class); - devfs_remove("i2c"); unregister_chrdev(I2C_MAJOR,"i2c"); } diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index ee38e6b143a4..47f2b832555f 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -1013,6 +1013,8 @@ typedef struct ide_tape_obj { static DECLARE_MUTEX(idetape_ref_sem); +static struct class *idetape_sysfs_class; + #define to_ide_tape(obj) container_of(obj, struct ide_tape_obj, kref) #define ide_tape_g(disk) \ @@ -4704,6 +4706,10 @@ static void ide_tape_release(struct kref *kref) drive->dsc_overlap = 0; drive->driver_data = NULL; + class_device_destroy(idetape_sysfs_class, + MKDEV(IDETAPE_MAJOR, tape->minor)); + class_device_destroy(idetape_sysfs_class, + MKDEV(IDETAPE_MAJOR, tape->minor + 128)); devfs_remove("%s/mt", drive->devfs_name); devfs_remove("%s/mtn", drive->devfs_name); devfs_unregister_tape(g->number); @@ -4878,6 +4884,11 @@ static int ide_tape_probe(struct device *dev) idetape_setup(drive, tape, minor); + class_device_create(idetape_sysfs_class, NULL, + MKDEV(IDETAPE_MAJOR, minor), dev, "%s", tape->name); + class_device_create(idetape_sysfs_class, NULL, + MKDEV(IDETAPE_MAJOR, minor + 128), dev, "n%s", tape->name); + devfs_mk_cdev(MKDEV(HWIF(drive)->major, minor), S_IFCHR | S_IRUGO | S_IWUGO, "%s/mt", drive->devfs_name); @@ -4903,6 +4914,7 @@ MODULE_LICENSE("GPL"); static void __exit idetape_exit (void) { driver_unregister(&idetape_driver.gen_driver); + class_destroy(idetape_sysfs_class); unregister_chrdev(IDETAPE_MAJOR, "ht"); } @@ -4911,11 +4923,33 @@ static void __exit idetape_exit (void) */ static int idetape_init (void) { + int error = 1; + idetape_sysfs_class = class_create(THIS_MODULE, "ide_tape"); + if (IS_ERR(idetape_sysfs_class)) { + idetape_sysfs_class = NULL; + printk(KERN_ERR "Unable to create sysfs class for ide tapes\n"); + error = -EBUSY; + goto out; + } + if (register_chrdev(IDETAPE_MAJOR, "ht", &idetape_fops)) { printk(KERN_ERR "ide-tape: Failed to register character device interface\n"); - return -EBUSY; + error = -EBUSY; + goto out_free_class; } - return driver_register(&idetape_driver.gen_driver); + + error = driver_register(&idetape_driver.gen_driver); + if (error) + goto out_free_driver; + + return 0; + +out_free_driver: + driver_unregister(&idetape_driver.gen_driver); +out_free_class: + class_destroy(idetape_sysfs_class); +out: + return error; } module_init(idetape_init); diff --git a/drivers/ieee1394/dv1394.c b/drivers/ieee1394/dv1394.c index e34730c7a874..cbbbe14b8849 100644 --- a/drivers/ieee1394/dv1394.c +++ b/drivers/ieee1394/dv1394.c @@ -2361,7 +2361,7 @@ static void dv1394_add_host (struct hpsb_host *host) ohci = (struct ti_ohci *)host->hostdata; - class_device_create(hpsb_protocol_class, MKDEV( + class_device_create(hpsb_protocol_class, NULL, MKDEV( IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_DV1394 * 16 + (id<<2)), NULL, "dv1394-%d", id); devfs_mk_dir("ieee1394/dv/host%d", id); diff --git a/drivers/ieee1394/eth1394.c b/drivers/ieee1394/eth1394.c index 4802bbbb6dc9..c9e92d85c893 100644 --- a/drivers/ieee1394/eth1394.c +++ b/drivers/ieee1394/eth1394.c @@ -1630,7 +1630,7 @@ static void ether1394_complete_cb(void *__ptask) /* Transmit a packet (called by kernel) */ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev) { - int kmflags = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL; + gfp_t kmflags = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL; struct eth1394hdr *eth; struct eth1394_priv *priv = netdev_priv(dev); int proto; diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c index 347ece6b583c..7fff5a1d2ea4 100644 --- a/drivers/ieee1394/nodemgr.c +++ b/drivers/ieee1394/nodemgr.c @@ -1292,7 +1292,7 @@ static void nodemgr_suspend_ne(struct node_entry *ne) if (ud->device.driver && (!ud->device.driver->suspend || - ud->device.driver->suspend(&ud->device, PMSG_SUSPEND, 0))) + ud->device.driver->suspend(&ud->device, PMSG_SUSPEND))) device_release_driver(&ud->device); } up_write(&ne->device.bus->subsys.rwsem); @@ -1315,7 +1315,7 @@ static void nodemgr_resume_ne(struct node_entry *ne) continue; if (ud->device.driver && ud->device.driver->resume) - ud->device.driver->resume(&ud->device, 0); + ud->device.driver->resume(&ud->device); } up_read(&ne->device.bus->subsys.rwsem); diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c index 0470f77a9cd1..24411e666b21 100644 --- a/drivers/ieee1394/raw1394.c +++ b/drivers/ieee1394/raw1394.c @@ -2912,7 +2912,7 @@ static int __init init_raw1394(void) hpsb_register_highlevel(&raw1394_highlevel); - if (IS_ERR(class_device_create(hpsb_protocol_class, MKDEV( + if (IS_ERR(class_device_create(hpsb_protocol_class, NULL, MKDEV( IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16), NULL, RAW1394_DEVICE_NAME))) { ret = -EFAULT; diff --git a/drivers/ieee1394/video1394.c b/drivers/ieee1394/video1394.c index 11be9c9c82a8..23911da50154 100644 --- a/drivers/ieee1394/video1394.c +++ b/drivers/ieee1394/video1394.c @@ -1370,7 +1370,7 @@ static void video1394_add_host (struct hpsb_host *host) hpsb_set_hostinfo_key(&video1394_highlevel, host, ohci->host->id); minor = IEEE1394_MINOR_BLOCK_VIDEO1394 * 16 + ohci->host->id; - class_device_create(hpsb_protocol_class, MKDEV( + class_device_create(hpsb_protocol_class, NULL, MKDEV( IEEE1394_MAJOR, minor), NULL, "%s-%d", VIDEO1394_DRIVER_NAME, ohci->host->id); devfs_mk_cdev(MKDEV(IEEE1394_MAJOR, minor), diff --git a/drivers/infiniband/core/agent.c b/drivers/infiniband/core/agent.c index 5ac86f566dc0..0c3c6952faae 100644 --- a/drivers/infiniband/core/agent.c +++ b/drivers/infiniband/core/agent.c @@ -37,58 +37,41 @@ * $Id: agent.c 1389 2004-12-27 22:56:47Z roland $ */ -#include <linux/dma-mapping.h> - -#include <asm/bug.h> +#include "agent.h" +#include "smi.h" -#include <rdma/ib_smi.h> +#define SPFX "ib_agent: " -#include "smi.h" -#include "agent_priv.h" -#include "mad_priv.h" -#include "agent.h" +struct ib_agent_port_private { + struct list_head port_list; + struct ib_mad_agent *agent[2]; +}; -spinlock_t ib_agent_port_list_lock; +static DEFINE_SPINLOCK(ib_agent_port_list_lock); static LIST_HEAD(ib_agent_port_list); -/* - * Caller must hold ib_agent_port_list_lock - */ -static inline struct ib_agent_port_private * -__ib_get_agent_port(struct ib_device *device, int port_num, - struct ib_mad_agent *mad_agent) +static struct ib_agent_port_private * +__ib_get_agent_port(struct ib_device *device, int port_num) { struct ib_agent_port_private *entry; - BUG_ON(!(!!device ^ !!mad_agent)); /* Exactly one MUST be (!NULL) */ - - if (device) { - list_for_each_entry(entry, &ib_agent_port_list, port_list) { - if (entry->smp_agent->device == device && - entry->port_num == port_num) - return entry; - } - } else { - list_for_each_entry(entry, &ib_agent_port_list, port_list) { - if ((entry->smp_agent == mad_agent) || - (entry->perf_mgmt_agent == mad_agent)) - return entry; - } + list_for_each_entry(entry, &ib_agent_port_list, port_list) { + if (entry->agent[0]->device == device && + entry->agent[0]->port_num == port_num) + return entry; } return NULL; } -static inline struct ib_agent_port_private * -ib_get_agent_port(struct ib_device *device, int port_num, - struct ib_mad_agent *mad_agent) +static struct ib_agent_port_private * +ib_get_agent_port(struct ib_device *device, int port_num) { struct ib_agent_port_private *entry; unsigned long flags; spin_lock_irqsave(&ib_agent_port_list_lock, flags); - entry = __ib_get_agent_port(device, port_num, mad_agent); + entry = __ib_get_agent_port(device, port_num); spin_unlock_irqrestore(&ib_agent_port_list_lock, flags); - return entry; } @@ -100,192 +83,76 @@ int smi_check_local_dr_smp(struct ib_smp *smp, if (smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) return 1; - port_priv = ib_get_agent_port(device, port_num, NULL); + + port_priv = ib_get_agent_port(device, port_num); if (!port_priv) { printk(KERN_DEBUG SPFX "smi_check_local_dr_smp %s port %d " - "not open\n", - device->name, port_num); + "not open\n", device->name, port_num); return 1; } - return smi_check_local_smp(port_priv->smp_agent, smp); + return smi_check_local_smp(port_priv->agent[0], smp); } -static int agent_mad_send(struct ib_mad_agent *mad_agent, - struct ib_agent_port_private *port_priv, - struct ib_mad_private *mad_priv, - struct ib_grh *grh, - struct ib_wc *wc) +int agent_send_response(struct ib_mad *mad, struct ib_grh *grh, + struct ib_wc *wc, struct ib_device *device, + int port_num, int qpn) { - struct ib_agent_send_wr *agent_send_wr; - struct ib_sge gather_list; - struct ib_send_wr send_wr; - struct ib_send_wr *bad_send_wr; - struct ib_ah_attr ah_attr; - unsigned long flags; - int ret = 1; - - agent_send_wr = kmalloc(sizeof(*agent_send_wr), GFP_KERNEL); - if (!agent_send_wr) - goto out; - agent_send_wr->mad = mad_priv; - - gather_list.addr = dma_map_single(mad_agent->device->dma_device, - &mad_priv->mad, - sizeof(mad_priv->mad), - DMA_TO_DEVICE); - gather_list.length = sizeof(mad_priv->mad); - gather_list.lkey = mad_agent->mr->lkey; - - send_wr.next = NULL; - send_wr.opcode = IB_WR_SEND; - send_wr.sg_list = &gather_list; - send_wr.num_sge = 1; - send_wr.wr.ud.remote_qpn = wc->src_qp; /* DQPN */ - send_wr.wr.ud.timeout_ms = 0; - send_wr.send_flags = IB_SEND_SIGNALED | IB_SEND_SOLICITED; + struct ib_agent_port_private *port_priv; + struct ib_mad_agent *agent; + struct ib_mad_send_buf *send_buf; + struct ib_ah *ah; + int ret; - ah_attr.dlid = wc->slid; - ah_attr.port_num = mad_agent->port_num; - ah_attr.src_path_bits = wc->dlid_path_bits; - ah_attr.sl = wc->sl; - ah_attr.static_rate = 0; - ah_attr.ah_flags = 0; /* No GRH */ - if (mad_priv->mad.mad.mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT) { - if (wc->wc_flags & IB_WC_GRH) { - ah_attr.ah_flags = IB_AH_GRH; - /* Should sgid be looked up ? */ - ah_attr.grh.sgid_index = 0; - ah_attr.grh.hop_limit = grh->hop_limit; - ah_attr.grh.flow_label = be32_to_cpu( - grh->version_tclass_flow) & 0xfffff; - ah_attr.grh.traffic_class = (be32_to_cpu( - grh->version_tclass_flow) >> 20) & 0xff; - memcpy(ah_attr.grh.dgid.raw, - grh->sgid.raw, - sizeof(ah_attr.grh.dgid)); - } + port_priv = ib_get_agent_port(device, port_num); + if (!port_priv) { + printk(KERN_ERR SPFX "Unable to find port agent\n"); + return -ENODEV; } - agent_send_wr->ah = ib_create_ah(mad_agent->qp->pd, &ah_attr); - if (IS_ERR(agent_send_wr->ah)) { - printk(KERN_ERR SPFX "No memory for address handle\n"); - kfree(agent_send_wr); - goto out; + agent = port_priv->agent[qpn]; + ah = ib_create_ah_from_wc(agent->qp->pd, wc, grh, port_num); + if (IS_ERR(ah)) { + ret = PTR_ERR(ah); + printk(KERN_ERR SPFX "ib_create_ah_from_wc error:%d\n", ret); + return ret; } - send_wr.wr.ud.ah = agent_send_wr->ah; - if (mad_priv->mad.mad.mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT) { - send_wr.wr.ud.pkey_index = wc->pkey_index; - send_wr.wr.ud.remote_qkey = IB_QP1_QKEY; - } else { /* for SMPs */ - send_wr.wr.ud.pkey_index = 0; - send_wr.wr.ud.remote_qkey = 0; + send_buf = ib_create_send_mad(agent, wc->src_qp, wc->pkey_index, 0, + IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA, + GFP_KERNEL); + if (IS_ERR(send_buf)) { + ret = PTR_ERR(send_buf); + printk(KERN_ERR SPFX "ib_create_send_mad error:%d\n", ret); + goto err1; } - send_wr.wr.ud.mad_hdr = &mad_priv->mad.mad.mad_hdr; - send_wr.wr_id = (unsigned long)agent_send_wr; - pci_unmap_addr_set(agent_send_wr, mapping, gather_list.addr); - - /* Send */ - spin_lock_irqsave(&port_priv->send_list_lock, flags); - if (ib_post_send_mad(mad_agent, &send_wr, &bad_send_wr)) { - spin_unlock_irqrestore(&port_priv->send_list_lock, flags); - dma_unmap_single(mad_agent->device->dma_device, - pci_unmap_addr(agent_send_wr, mapping), - sizeof(mad_priv->mad), - DMA_TO_DEVICE); - ib_destroy_ah(agent_send_wr->ah); - kfree(agent_send_wr); - } else { - list_add_tail(&agent_send_wr->send_list, - &port_priv->send_posted_list); - spin_unlock_irqrestore(&port_priv->send_list_lock, flags); - ret = 0; + memcpy(send_buf->mad, mad, sizeof *mad); + send_buf->ah = ah; + if ((ret = ib_post_send_mad(send_buf, NULL))) { + printk(KERN_ERR SPFX "ib_post_send_mad error:%d\n", ret); + goto err2; } - -out: + return 0; +err2: + ib_free_send_mad(send_buf); +err1: + ib_destroy_ah(ah); return ret; } -int agent_send(struct ib_mad_private *mad, - struct ib_grh *grh, - struct ib_wc *wc, - struct ib_device *device, - int port_num) -{ - struct ib_agent_port_private *port_priv; - struct ib_mad_agent *mad_agent; - - port_priv = ib_get_agent_port(device, port_num, NULL); - if (!port_priv) { - printk(KERN_DEBUG SPFX "agent_send %s port %d not open\n", - device->name, port_num); - return 1; - } - - /* Get mad agent based on mgmt_class in MAD */ - switch (mad->mad.mad.mad_hdr.mgmt_class) { - case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: - case IB_MGMT_CLASS_SUBN_LID_ROUTED: - mad_agent = port_priv->smp_agent; - break; - case IB_MGMT_CLASS_PERF_MGMT: - mad_agent = port_priv->perf_mgmt_agent; - break; - default: - return 1; - } - - return agent_mad_send(mad_agent, port_priv, mad, grh, wc); -} - static void agent_send_handler(struct ib_mad_agent *mad_agent, struct ib_mad_send_wc *mad_send_wc) { - struct ib_agent_port_private *port_priv; - struct ib_agent_send_wr *agent_send_wr; - unsigned long flags; - - /* Find matching MAD agent */ - port_priv = ib_get_agent_port(NULL, 0, mad_agent); - if (!port_priv) { - printk(KERN_ERR SPFX "agent_send_handler: no matching MAD " - "agent %p\n", mad_agent); - return; - } - - agent_send_wr = (struct ib_agent_send_wr *)(unsigned long)mad_send_wc->wr_id; - spin_lock_irqsave(&port_priv->send_list_lock, flags); - /* Remove completed send from posted send MAD list */ - list_del(&agent_send_wr->send_list); - spin_unlock_irqrestore(&port_priv->send_list_lock, flags); - - dma_unmap_single(mad_agent->device->dma_device, - pci_unmap_addr(agent_send_wr, mapping), - sizeof(agent_send_wr->mad->mad), - DMA_TO_DEVICE); - - ib_destroy_ah(agent_send_wr->ah); - - /* Release allocated memory */ - kmem_cache_free(ib_mad_cache, agent_send_wr->mad); - kfree(agent_send_wr); + ib_destroy_ah(mad_send_wc->send_buf->ah); + ib_free_send_mad(mad_send_wc->send_buf); } int ib_agent_port_open(struct ib_device *device, int port_num) { - int ret; struct ib_agent_port_private *port_priv; unsigned long flags; - - /* First, check if port already open for SMI */ - port_priv = ib_get_agent_port(device, port_num, NULL); - if (port_priv) { - printk(KERN_DEBUG SPFX "%s port %d already open\n", - device->name, port_num); - return 0; - } + int ret; /* Create new device info */ port_priv = kmalloc(sizeof *port_priv, GFP_KERNEL); @@ -294,32 +161,25 @@ int ib_agent_port_open(struct ib_device *device, int port_num) ret = -ENOMEM; goto error1; } - memset(port_priv, 0, sizeof *port_priv); - port_priv->port_num = port_num; - spin_lock_init(&port_priv->send_list_lock); - INIT_LIST_HEAD(&port_priv->send_posted_list); - /* Obtain send only MAD agent for SM class (SMI QP) */ - port_priv->smp_agent = ib_register_mad_agent(device, port_num, - IB_QPT_SMI, - NULL, 0, + /* Obtain send only MAD agent for SMI QP */ + port_priv->agent[0] = ib_register_mad_agent(device, port_num, + IB_QPT_SMI, NULL, 0, &agent_send_handler, - NULL, NULL); - - if (IS_ERR(port_priv->smp_agent)) { - ret = PTR_ERR(port_priv->smp_agent); + NULL, NULL); + if (IS_ERR(port_priv->agent[0])) { + ret = PTR_ERR(port_priv->agent[0]); goto error2; } - /* Obtain send only MAD agent for PerfMgmt class (GSI QP) */ - port_priv->perf_mgmt_agent = ib_register_mad_agent(device, port_num, - IB_QPT_GSI, - NULL, 0, - &agent_send_handler, - NULL, NULL); - if (IS_ERR(port_priv->perf_mgmt_agent)) { - ret = PTR_ERR(port_priv->perf_mgmt_agent); + /* Obtain send only MAD agent for GSI QP */ + port_priv->agent[1] = ib_register_mad_agent(device, port_num, + IB_QPT_GSI, NULL, 0, + &agent_send_handler, + NULL, NULL); + if (IS_ERR(port_priv->agent[1])) { + ret = PTR_ERR(port_priv->agent[1]); goto error3; } @@ -330,7 +190,7 @@ int ib_agent_port_open(struct ib_device *device, int port_num) return 0; error3: - ib_unregister_mad_agent(port_priv->smp_agent); + ib_unregister_mad_agent(port_priv->agent[0]); error2: kfree(port_priv); error1: @@ -343,7 +203,7 @@ int ib_agent_port_close(struct ib_device *device, int port_num) unsigned long flags; spin_lock_irqsave(&ib_agent_port_list_lock, flags); - port_priv = __ib_get_agent_port(device, port_num, NULL); + port_priv = __ib_get_agent_port(device, port_num); if (port_priv == NULL) { spin_unlock_irqrestore(&ib_agent_port_list_lock, flags); printk(KERN_ERR SPFX "Port %d not found\n", port_num); @@ -352,9 +212,8 @@ int ib_agent_port_close(struct ib_device *device, int port_num) list_del(&port_priv->port_list); spin_unlock_irqrestore(&ib_agent_port_list_lock, flags); - ib_unregister_mad_agent(port_priv->perf_mgmt_agent); - ib_unregister_mad_agent(port_priv->smp_agent); + ib_unregister_mad_agent(port_priv->agent[1]); + ib_unregister_mad_agent(port_priv->agent[0]); kfree(port_priv); - return 0; } diff --git a/drivers/infiniband/core/agent.h b/drivers/infiniband/core/agent.h index d9426842254a..c5f3cfec942a 100644 --- a/drivers/infiniband/core/agent.h +++ b/drivers/infiniband/core/agent.h @@ -39,17 +39,14 @@ #ifndef __AGENT_H_ #define __AGENT_H_ -extern spinlock_t ib_agent_port_list_lock; +#include <rdma/ib_mad.h> -extern int ib_agent_port_open(struct ib_device *device, - int port_num); +extern int ib_agent_port_open(struct ib_device *device, int port_num); extern int ib_agent_port_close(struct ib_device *device, int port_num); -extern int agent_send(struct ib_mad_private *mad, - struct ib_grh *grh, - struct ib_wc *wc, - struct ib_device *device, - int port_num); +extern int agent_send_response(struct ib_mad *mad, struct ib_grh *grh, + struct ib_wc *wc, struct ib_device *device, + int port_num, int qpn); #endif /* __AGENT_H_ */ diff --git a/drivers/infiniband/core/agent_priv.h b/drivers/infiniband/core/agent_priv.h deleted file mode 100644 index 2ec6d7f1b7d0..000000000000 --- a/drivers/infiniband/core/agent_priv.h +++ /dev/null @@ -1,62 +0,0 @@ -/* - * Copyright (c) 2004, 2005 Mellanox Technologies Ltd. All rights reserved. - * Copyright (c) 2004, 2005 Infinicon Corporation. All rights reserved. - * Copyright (c) 2004, 2005 Intel Corporation. All rights reserved. - * Copyright (c) 2004, 2005 Topspin Corporation. All rights reserved. - * Copyright (c) 2004, 2005 Voltaire Corporation. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - * $Id: agent_priv.h 1640 2005-01-24 22:39:02Z halr $ - */ - -#ifndef __IB_AGENT_PRIV_H__ -#define __IB_AGENT_PRIV_H__ - -#include <linux/pci.h> - -#define SPFX "ib_agent: " - -struct ib_agent_send_wr { - struct list_head send_list; - struct ib_ah *ah; - struct ib_mad_private *mad; - DECLARE_PCI_UNMAP_ADDR(mapping) -}; - -struct ib_agent_port_private { - struct list_head port_list; - struct list_head send_posted_list; - spinlock_t send_list_lock; - int port_num; - struct ib_mad_agent *smp_agent; /* SM class */ - struct ib_mad_agent *perf_mgmt_agent; /* PerfMgmt class */ -}; - -#endif /* __IB_AGENT_PRIV_H__ */ diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c index 54db6d4831f1..580c3a2bb102 100644 --- a/drivers/infiniband/core/cm.c +++ b/drivers/infiniband/core/cm.c @@ -135,6 +135,7 @@ struct cm_id_private { __be64 tid; __be32 local_qpn; __be32 remote_qpn; + enum ib_qp_type qp_type; __be32 sq_psn; __be32 rq_psn; int timeout_ms; @@ -175,8 +176,7 @@ static int cm_alloc_msg(struct cm_id_private *cm_id_priv, m = ib_create_send_mad(mad_agent, cm_id_priv->id.remote_cm_qpn, cm_id_priv->av.pkey_index, - ah, 0, sizeof(struct ib_mad_hdr), - sizeof(struct ib_mad)-sizeof(struct ib_mad_hdr), + 0, IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA, GFP_ATOMIC); if (IS_ERR(m)) { ib_destroy_ah(ah); @@ -184,7 +184,8 @@ static int cm_alloc_msg(struct cm_id_private *cm_id_priv, } /* Timeout set by caller if response is expected. */ - m->send_wr.wr.ud.retries = cm_id_priv->max_cm_retries; + m->ah = ah; + m->retries = cm_id_priv->max_cm_retries; atomic_inc(&cm_id_priv->refcount); m->context[0] = cm_id_priv; @@ -205,20 +206,20 @@ static int cm_alloc_response_msg(struct cm_port *port, return PTR_ERR(ah); m = ib_create_send_mad(port->mad_agent, 1, mad_recv_wc->wc->pkey_index, - ah, 0, sizeof(struct ib_mad_hdr), - sizeof(struct ib_mad)-sizeof(struct ib_mad_hdr), + 0, IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA, GFP_ATOMIC); if (IS_ERR(m)) { ib_destroy_ah(ah); return PTR_ERR(m); } + m->ah = ah; *msg = m; return 0; } static void cm_free_msg(struct ib_mad_send_buf *msg) { - ib_destroy_ah(msg->send_wr.wr.ud.ah); + ib_destroy_ah(msg->ah); if (msg->context[0]) cm_deref_id(msg->context[0]); ib_free_send_mad(msg); @@ -366,9 +367,15 @@ static struct cm_id_private * cm_insert_listen(struct cm_id_private *cm_id_priv) cur_cm_id_priv = rb_entry(parent, struct cm_id_private, service_node); if ((cur_cm_id_priv->id.service_mask & service_id) == - (service_mask & cur_cm_id_priv->id.service_id)) - return cm_id_priv; - if (service_id < cur_cm_id_priv->id.service_id) + (service_mask & cur_cm_id_priv->id.service_id) && + (cm_id_priv->id.device == cur_cm_id_priv->id.device)) + return cur_cm_id_priv; + + if (cm_id_priv->id.device < cur_cm_id_priv->id.device) + link = &(*link)->rb_left; + else if (cm_id_priv->id.device > cur_cm_id_priv->id.device) + link = &(*link)->rb_right; + else if (service_id < cur_cm_id_priv->id.service_id) link = &(*link)->rb_left; else link = &(*link)->rb_right; @@ -378,7 +385,8 @@ static struct cm_id_private * cm_insert_listen(struct cm_id_private *cm_id_priv) return NULL; } -static struct cm_id_private * cm_find_listen(__be64 service_id) +static struct cm_id_private * cm_find_listen(struct ib_device *device, + __be64 service_id) { struct rb_node *node = cm.listen_service_table.rb_node; struct cm_id_private *cm_id_priv; @@ -386,9 +394,15 @@ static struct cm_id_private * cm_find_listen(__be64 service_id) while (node) { cm_id_priv = rb_entry(node, struct cm_id_private, service_node); if ((cm_id_priv->id.service_mask & service_id) == - (cm_id_priv->id.service_mask & cm_id_priv->id.service_id)) + cm_id_priv->id.service_id && + (cm_id_priv->id.device == device)) return cm_id_priv; - if (service_id < cm_id_priv->id.service_id) + + if (device < cm_id_priv->id.device) + node = node->rb_left; + else if (device > cm_id_priv->id.device) + node = node->rb_right; + else if (service_id < cm_id_priv->id.service_id) node = node->rb_left; else node = node->rb_right; @@ -523,7 +537,8 @@ static void cm_reject_sidr_req(struct cm_id_private *cm_id_priv, ib_send_cm_sidr_rep(&cm_id_priv->id, ¶m); } -struct ib_cm_id *ib_create_cm_id(ib_cm_handler cm_handler, +struct ib_cm_id *ib_create_cm_id(struct ib_device *device, + ib_cm_handler cm_handler, void *context) { struct cm_id_private *cm_id_priv; @@ -535,6 +550,7 @@ struct ib_cm_id *ib_create_cm_id(ib_cm_handler cm_handler, memset(cm_id_priv, 0, sizeof *cm_id_priv); cm_id_priv->id.state = IB_CM_IDLE; + cm_id_priv->id.device = device; cm_id_priv->id.cm_handler = cm_handler; cm_id_priv->id.context = context; cm_id_priv->id.remote_cm_qpn = 1; @@ -662,8 +678,7 @@ retest: break; case IB_CM_SIDR_REQ_SENT: cm_id->state = IB_CM_IDLE; - ib_cancel_mad(cm_id_priv->av.port->mad_agent, - (unsigned long) cm_id_priv->msg); + ib_cancel_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg); spin_unlock_irqrestore(&cm_id_priv->lock, flags); break; case IB_CM_SIDR_REQ_RCVD: @@ -674,8 +689,7 @@ retest: case IB_CM_MRA_REQ_RCVD: case IB_CM_REP_SENT: case IB_CM_MRA_REP_RCVD: - ib_cancel_mad(cm_id_priv->av.port->mad_agent, - (unsigned long) cm_id_priv->msg); + ib_cancel_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg); /* Fall through */ case IB_CM_REQ_RCVD: case IB_CM_MRA_REQ_SENT: @@ -692,8 +706,7 @@ retest: ib_send_cm_dreq(cm_id, NULL, 0); goto retest; case IB_CM_DREQ_SENT: - ib_cancel_mad(cm_id_priv->av.port->mad_agent, - (unsigned long) cm_id_priv->msg); + ib_cancel_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg); cm_enter_timewait(cm_id_priv); spin_unlock_irqrestore(&cm_id_priv->lock, flags); break; @@ -867,7 +880,6 @@ int ib_send_cm_req(struct ib_cm_id *cm_id, struct ib_cm_req_param *param) { struct cm_id_private *cm_id_priv; - struct ib_send_wr *bad_send_wr; struct cm_req_msg *req_msg; unsigned long flags; int ret; @@ -911,6 +923,7 @@ int ib_send_cm_req(struct ib_cm_id *cm_id, cm_id_priv->responder_resources = param->responder_resources; cm_id_priv->retry_count = param->retry_count; cm_id_priv->path_mtu = param->primary_path->mtu; + cm_id_priv->qp_type = param->qp_type; ret = cm_alloc_msg(cm_id_priv, &cm_id_priv->msg); if (ret) @@ -919,7 +932,7 @@ int ib_send_cm_req(struct ib_cm_id *cm_id, req_msg = (struct cm_req_msg *) cm_id_priv->msg->mad; cm_format_req(req_msg, cm_id_priv, param); cm_id_priv->tid = req_msg->hdr.tid; - cm_id_priv->msg->send_wr.wr.ud.timeout_ms = cm_id_priv->timeout_ms; + cm_id_priv->msg->timeout_ms = cm_id_priv->timeout_ms; cm_id_priv->msg->context[1] = (void *) (unsigned long) IB_CM_REQ_SENT; cm_id_priv->local_qpn = cm_req_get_local_qpn(req_msg); @@ -928,8 +941,7 @@ int ib_send_cm_req(struct ib_cm_id *cm_id, cm_req_get_primary_local_ack_timeout(req_msg); spin_lock_irqsave(&cm_id_priv->lock, flags); - ret = ib_post_send_mad(cm_id_priv->av.port->mad_agent, - &cm_id_priv->msg->send_wr, &bad_send_wr); + ret = ib_post_send_mad(cm_id_priv->msg, NULL); if (ret) { spin_unlock_irqrestore(&cm_id_priv->lock, flags); goto error2; @@ -952,7 +964,6 @@ static int cm_issue_rej(struct cm_port *port, void *ari, u8 ari_length) { struct ib_mad_send_buf *msg = NULL; - struct ib_send_wr *bad_send_wr; struct cm_rej_msg *rej_msg, *rcv_msg; int ret; @@ -975,7 +986,7 @@ static int cm_issue_rej(struct cm_port *port, memcpy(rej_msg->ari, ari, ari_length); } - ret = ib_post_send_mad(port->mad_agent, &msg->send_wr, &bad_send_wr); + ret = ib_post_send_mad(msg, NULL); if (ret) cm_free_msg(msg); @@ -1047,7 +1058,6 @@ static void cm_format_req_event(struct cm_work *work, req_msg = (struct cm_req_msg *)work->mad_recv_wc->recv_buf.mad; param = &work->cm_event.param.req_rcvd; param->listen_id = listen_id; - param->device = cm_id_priv->av.port->mad_agent->device; param->port = cm_id_priv->av.port->port_num; param->primary_path = &work->path[0]; if (req_msg->alt_local_lid) @@ -1156,7 +1166,6 @@ static void cm_dup_req_handler(struct cm_work *work, struct cm_id_private *cm_id_priv) { struct ib_mad_send_buf *msg = NULL; - struct ib_send_wr *bad_send_wr; unsigned long flags; int ret; @@ -1185,8 +1194,7 @@ static void cm_dup_req_handler(struct cm_work *work, } spin_unlock_irqrestore(&cm_id_priv->lock, flags); - ret = ib_post_send_mad(cm_id_priv->av.port->mad_agent, &msg->send_wr, - &bad_send_wr); + ret = ib_post_send_mad(msg, NULL); if (ret) goto free; return; @@ -1226,7 +1234,8 @@ static struct cm_id_private * cm_match_req(struct cm_work *work, } /* Find matching listen request. */ - listen_cm_id_priv = cm_find_listen(req_msg->service_id); + listen_cm_id_priv = cm_find_listen(cm_id_priv->id.device, + req_msg->service_id); if (!listen_cm_id_priv) { spin_unlock_irqrestore(&cm.lock, flags); cm_issue_rej(work->port, work->mad_recv_wc, @@ -1254,7 +1263,7 @@ static int cm_req_handler(struct cm_work *work) req_msg = (struct cm_req_msg *)work->mad_recv_wc->recv_buf.mad; - cm_id = ib_create_cm_id(NULL, NULL); + cm_id = ib_create_cm_id(work->port->cm_dev->device, NULL, NULL); if (IS_ERR(cm_id)) return PTR_ERR(cm_id); @@ -1305,6 +1314,7 @@ static int cm_req_handler(struct cm_work *work) cm_req_get_primary_local_ack_timeout(req_msg); cm_id_priv->retry_count = cm_req_get_retry_count(req_msg); cm_id_priv->rnr_retry_count = cm_req_get_rnr_retry_count(req_msg); + cm_id_priv->qp_type = cm_req_get_qp_type(req_msg); cm_format_req_event(work, cm_id_priv, &listen_cm_id_priv->id); cm_process_work(cm_id_priv, work); @@ -1349,7 +1359,6 @@ int ib_send_cm_rep(struct ib_cm_id *cm_id, struct cm_id_private *cm_id_priv; struct ib_mad_send_buf *msg; struct cm_rep_msg *rep_msg; - struct ib_send_wr *bad_send_wr; unsigned long flags; int ret; @@ -1371,11 +1380,10 @@ int ib_send_cm_rep(struct ib_cm_id *cm_id, rep_msg = (struct cm_rep_msg *) msg->mad; cm_format_rep(rep_msg, cm_id_priv, param); - msg->send_wr.wr.ud.timeout_ms = cm_id_priv->timeout_ms; + msg->timeout_ms = cm_id_priv->timeout_ms; msg->context[1] = (void *) (unsigned long) IB_CM_REP_SENT; - ret = ib_post_send_mad(cm_id_priv->av.port->mad_agent, - &msg->send_wr, &bad_send_wr); + ret = ib_post_send_mad(msg, NULL); if (ret) { spin_unlock_irqrestore(&cm_id_priv->lock, flags); cm_free_msg(msg); @@ -1413,7 +1421,6 @@ int ib_send_cm_rtu(struct ib_cm_id *cm_id, { struct cm_id_private *cm_id_priv; struct ib_mad_send_buf *msg; - struct ib_send_wr *bad_send_wr; unsigned long flags; void *data; int ret; @@ -1440,8 +1447,7 @@ int ib_send_cm_rtu(struct ib_cm_id *cm_id, cm_format_rtu((struct cm_rtu_msg *) msg->mad, cm_id_priv, private_data, private_data_len); - ret = ib_post_send_mad(cm_id_priv->av.port->mad_agent, - &msg->send_wr, &bad_send_wr); + ret = ib_post_send_mad(msg, NULL); if (ret) { spin_unlock_irqrestore(&cm_id_priv->lock, flags); cm_free_msg(msg); @@ -1486,7 +1492,6 @@ static void cm_dup_rep_handler(struct cm_work *work) struct cm_id_private *cm_id_priv; struct cm_rep_msg *rep_msg; struct ib_mad_send_buf *msg = NULL; - struct ib_send_wr *bad_send_wr; unsigned long flags; int ret; @@ -1514,8 +1519,7 @@ static void cm_dup_rep_handler(struct cm_work *work) goto unlock; spin_unlock_irqrestore(&cm_id_priv->lock, flags); - ret = ib_post_send_mad(cm_id_priv->av.port->mad_agent, &msg->send_wr, - &bad_send_wr); + ret = ib_post_send_mad(msg, NULL); if (ret) goto free; goto deref; @@ -1583,8 +1587,7 @@ static int cm_rep_handler(struct cm_work *work) /* todo: handle peer_to_peer */ - ib_cancel_mad(cm_id_priv->av.port->mad_agent, - (unsigned long) cm_id_priv->msg); + ib_cancel_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg); ret = atomic_inc_and_test(&cm |