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path: root/drivers/pnp/base.h
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Diffstat (limited to 'drivers/pnp/base.h')
-rw-r--r--drivers/pnp/base.h93
1 files changed, 70 insertions, 23 deletions
diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h
index 360c6385686c..e3fa9a2d9a3d 100644
--- a/drivers/pnp/base.h
+++ b/drivers/pnp/base.h
@@ -1,3 +1,8 @@
+/*
+ * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
+ */
+
extern spinlock_t pnp_lock;
void *pnp_alloc(long size);
@@ -25,8 +30,6 @@ struct pnp_port {
resource_size_t align; /* align boundary */
resource_size_t size; /* size of range */
unsigned char flags; /* port flags */
- unsigned char pad; /* pad */
- struct pnp_port *next; /* next port */
};
#define PNP_IRQ_NR 256
@@ -35,14 +38,11 @@ typedef struct { DECLARE_BITMAP(bits, PNP_IRQ_NR); } pnp_irq_mask_t;
struct pnp_irq {
pnp_irq_mask_t map; /* bitmap for IRQ lines */
unsigned char flags; /* IRQ flags */
- unsigned char pad; /* pad */
- struct pnp_irq *next; /* next IRQ */
};
struct pnp_dma {
unsigned char map; /* bitmask for DMA channels */
unsigned char flags; /* DMA flags */
- struct pnp_dma *next; /* next port */
};
struct pnp_mem {
@@ -51,44 +51,91 @@ struct pnp_mem {
resource_size_t align; /* align boundary */
resource_size_t size; /* size of range */
unsigned char flags; /* memory flags */
- unsigned char pad; /* pad */
- struct pnp_mem *next; /* next memory resource */
};
+#define PNP_OPTION_DEPENDENT 0x80000000
+#define PNP_OPTION_SET_MASK 0xffff
+#define PNP_OPTION_SET_SHIFT 12
+#define PNP_OPTION_PRIORITY_MASK 0xfff
+#define PNP_OPTION_PRIORITY_SHIFT 0
+
#define PNP_RES_PRIORITY_PREFERRED 0
#define PNP_RES_PRIORITY_ACCEPTABLE 1
#define PNP_RES_PRIORITY_FUNCTIONAL 2
-#define PNP_RES_PRIORITY_INVALID 65535
+#define PNP_RES_PRIORITY_INVALID PNP_OPTION_PRIORITY_MASK
struct pnp_option {
- unsigned short priority; /* priority */
- struct pnp_port *port; /* first port */
- struct pnp_irq *irq; /* first IRQ */
- struct pnp_dma *dma; /* first DMA */
- struct pnp_mem *mem; /* first memory resource */
- struct pnp_option *next; /* used to chain dependent resources */
+ struct list_head list;
+ unsigned int flags; /* independent/dependent, set, priority */
+
+ unsigned long type; /* IORESOURCE_{IO,MEM,IRQ,DMA} */
+ union {
+ struct pnp_port port;
+ struct pnp_irq irq;
+ struct pnp_dma dma;
+ struct pnp_mem mem;
+ } u;
};
-struct pnp_option *pnp_build_option(int priority);
-struct pnp_option *pnp_register_independent_option(struct pnp_dev *dev);
-struct pnp_option *pnp_register_dependent_option(struct pnp_dev *dev,
- int priority);
-int pnp_register_irq_resource(struct pnp_dev *dev, struct pnp_option *option,
+int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,
pnp_irq_mask_t *map, unsigned char flags);
-int pnp_register_dma_resource(struct pnp_dev *dev, struct pnp_option *option,
+int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags,
unsigned char map, unsigned char flags);
-int pnp_register_port_resource(struct pnp_dev *dev, struct pnp_option *option,
+int pnp_register_port_resource(struct pnp_dev *dev, unsigned int option_flags,
resource_size_t min, resource_size_t max,
resource_size_t align, resource_size_t size,
unsigned char flags);
-int pnp_register_mem_resource(struct pnp_dev *dev, struct pnp_option *option,
+int pnp_register_mem_resource(struct pnp_dev *dev, unsigned int option_flags,
resource_size_t min, resource_size_t max,
resource_size_t align, resource_size_t size,
unsigned char flags);
+
+static inline int pnp_option_is_dependent(struct pnp_option *option)
+{
+ return option->flags & PNP_OPTION_DEPENDENT ? 1 : 0;
+}
+
+static inline unsigned int pnp_option_set(struct pnp_option *option)
+{
+ return (option->flags >> PNP_OPTION_SET_SHIFT) & PNP_OPTION_SET_MASK;
+}
+
+static inline unsigned int pnp_option_priority(struct pnp_option *option)
+{
+ return (option->flags >> PNP_OPTION_PRIORITY_SHIFT) &
+ PNP_OPTION_PRIORITY_MASK;
+}
+
+static inline unsigned int pnp_new_dependent_set(struct pnp_dev *dev,
+ int priority)
+{
+ unsigned int flags;
+
+ if (priority > PNP_RES_PRIORITY_FUNCTIONAL) {
+ dev_warn(&dev->dev, "invalid dependent option priority %d "
+ "clipped to %d", priority,
+ PNP_RES_PRIORITY_INVALID);
+ priority = PNP_RES_PRIORITY_INVALID;
+ }
+
+ flags = PNP_OPTION_DEPENDENT |
+ ((dev->num_dependent_sets & PNP_OPTION_SET_MASK) <<
+ PNP_OPTION_SET_SHIFT) |
+ ((priority & PNP_OPTION_PRIORITY_MASK) <<
+ PNP_OPTION_PRIORITY_SHIFT);
+
+ dev->num_dependent_sets++;
+
+ return flags;
+}
+
+char *pnp_option_priority_name(struct pnp_option *option);
+void dbg_pnp_show_option(struct pnp_dev *dev, struct pnp_option *option);
+
void pnp_init_resources(struct pnp_dev *dev);
void pnp_fixup_device(struct pnp_dev *dev);
-void pnp_free_option(struct pnp_option *option);
+void pnp_free_options(struct pnp_dev *dev);
int __pnp_add_device(struct pnp_dev *dev);
void __pnp_remove_device(struct pnp_dev *dev);

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