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-rw-r--r--drivers/net/sunlance.c51
-rw-r--r--drivers/sbus/Makefile2
-rw-r--r--drivers/sbus/dvma.c136
-rw-r--r--drivers/sbus/sbus.c2
-rw-r--r--drivers/scsi/esp_scsi.h3
-rw-r--r--drivers/scsi/sun_esp.c122
6 files changed, 99 insertions, 217 deletions
diff --git a/drivers/net/sunlance.c b/drivers/net/sunlance.c
index 4e994f87469e..24ffecb1ce23 100644
--- a/drivers/net/sunlance.c
+++ b/drivers/net/sunlance.c
@@ -248,7 +248,7 @@ struct lance_private {
int rx_new, tx_new;
int rx_old, tx_old;
- struct sbus_dma *ledma; /* If set this points to ledma */
+ struct of_device *ledma; /* If set this points to ledma */
char tpe; /* cable-selection is TPE */
char auto_select; /* cable-selection by carrier */
char burst_sizes; /* ledma SBus burst sizes */
@@ -1273,6 +1273,12 @@ static void lance_free_hwresources(struct lance_private *lp)
{
if (lp->lregs)
sbus_iounmap(lp->lregs, LANCE_REG_SIZE);
+ if (lp->dregs) {
+ struct of_device *ledma = lp->ledma;
+
+ of_iounmap(&ledma->resource[0], lp->dregs,
+ resource_size(&ledma->resource[0]));
+ }
if (lp->init_block_iomem) {
sbus_iounmap(lp->init_block_iomem,
sizeof(struct lance_init_block));
@@ -1309,7 +1315,7 @@ static const struct ethtool_ops sparc_lance_ethtool_ops = {
};
static int __devinit sparc_lance_probe_one(struct sbus_dev *sdev,
- struct sbus_dma *ledma,
+ struct of_device *ledma,
struct sbus_dev *lebuffer)
{
static unsigned version_printed;
@@ -1345,6 +1351,18 @@ static int __devinit sparc_lance_probe_one(struct sbus_dev *sdev,
goto fail;
}
+ lp->ledma = ledma;
+ if (lp->ledma) {
+ lp->dregs = of_ioremap(&ledma->resource[0], 0,
+ resource_size(&ledma->resource[0]),
+ "ledma");
+ if (!lp->dregs) {
+ printk(KERN_ERR "SunLance: Cannot map "
+ "ledma registers.\n");
+ goto fail;
+ }
+ }
+
lp->sdev = sdev;
if (lebuffer) {
/* sanity check */
@@ -1383,11 +1401,10 @@ static int __devinit sparc_lance_probe_one(struct sbus_dev *sdev,
LE_C3_BCON));
lp->name = lancestr;
- lp->ledma = ledma;
lp->burst_sizes = 0;
if (lp->ledma) {
- struct device_node *ledma_dp = ledma->sdev->ofdev.node;
+ struct device_node *ledma_dp = ledma->node;
const char *prop;
unsigned int sbmask;
u32 csr;
@@ -1435,8 +1452,6 @@ no_link_test:
lp->tpe = 1;
}
- lp->dregs = ledma->regs;
-
/* Reset ledma */
csr = sbus_readl(lp->dregs + DMA_CSR);
sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR);
@@ -1486,18 +1501,6 @@ fail:
return -ENODEV;
}
-/* On 4m, find the associated dma for the lance chip */
-static struct sbus_dma * __devinit find_ledma(struct sbus_dev *sdev)
-{
- struct sbus_dma *p;
-
- for_each_dvma(p) {
- if (p->sdev == sdev)
- return p;
- }
- return NULL;
-}
-
#ifdef CONFIG_SUN4
#include <asm/sun4paddr.h>
@@ -1541,13 +1544,13 @@ static int __devinit sunlance_sbus_probe(struct of_device *dev, const struct of_
int err;
if (sdev->parent) {
- struct of_device *parent = &sdev->parent->ofdev;
-
- if (!strcmp(parent->node->name, "ledma")) {
- struct sbus_dma *ledma = find_ledma(to_sbus_device(&parent->dev));
+ struct device_node *parent_node = sdev->parent->ofdev.node;
+ struct of_device *parent;
- err = sparc_lance_probe_one(sdev, ledma, NULL);
- } else if (!strcmp(parent->node->name, "lebuffer")) {
+ parent = of_find_device_by_node(parent_node);
+ if (parent && !strcmp(parent->node->name, "ledma")) {
+ err = sparc_lance_probe_one(sdev, parent, NULL);
+ } else if (parent && !strcmp(parent->node->name, "lebuffer")) {
err = sparc_lance_probe_one(sdev, NULL, to_sbus_device(&parent->dev));
} else
err = sparc_lance_probe_one(sdev, NULL, NULL);
diff --git a/drivers/sbus/Makefile b/drivers/sbus/Makefile
index 7b1d24d95308..56f73318eba2 100644
--- a/drivers/sbus/Makefile
+++ b/drivers/sbus/Makefile
@@ -3,7 +3,7 @@
#
ifneq ($(ARCH),m68k)
-obj-y := sbus.o dvma.o
+obj-y := sbus.o
endif
obj-$(CONFIG_SBUSCHAR) += char/
diff --git a/drivers/sbus/dvma.c b/drivers/sbus/dvma.c
deleted file mode 100644
index ab0d2de3324c..000000000000
--- a/drivers/sbus/dvma.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/* dvma.c: Routines that are used to access DMA on the Sparc SBus.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-
-#include <asm/oplib.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/sbus.h>
-
-struct sbus_dma *dma_chain;
-
-static void __init init_one_dvma(struct sbus_dma *dma, int num_dma)
-{
- printk("dma%d: ", num_dma);
-
- dma->next = NULL;
- dma->running = 0; /* No transfers going on as of yet */
- dma->allocated = 0; /* No one has allocated us yet */
- switch(sbus_readl(dma->regs + DMA_CSR)&DMA_DEVICE_ID) {
- case DMA_VERS0:
- dma->revision = dvmarev0;
- printk("Revision 0 ");
- break;
- case DMA_ESCV1:
- dma->revision = dvmaesc1;
- printk("ESC Revision 1 ");
- break;
- case DMA_VERS1:
- dma->revision = dvmarev1;
- printk("Revision 1 ");
- break;
- case DMA_VERS2:
- dma->revision = dvmarev2;
- printk("Revision 2 ");
- break;
- case DMA_VERHME:
- dma->revision = dvmahme;
- printk("HME DVMA gate array ");
- break;
- case DMA_VERSPLUS:
- dma->revision = dvmarevplus;
- printk("Revision 1 PLUS ");
- break;
- default:
- printk("unknown dma version %08x",
- sbus_readl(dma->regs + DMA_CSR) & DMA_DEVICE_ID);
- dma->allocated = 1;
- break;
- }
- printk("\n");
-}
-
-/* Probe this SBus DMA module(s) */
-void __init dvma_init(struct sbus_bus *sbus)
-{
- struct sbus_dev *this_dev;
- struct sbus_dma *dma;
- struct sbus_dma *dchain;
- static int num_dma = 0;
-
- for_each_sbusdev(this_dev, sbus) {
- char *name = this_dev->prom_name;
- int hme = 0;
-
- if(!strcmp(name, "SUNW,fas"))
- hme = 1;
- else if(strcmp(name, "dma") &&
- strcmp(name, "ledma") &&
- strcmp(name, "espdma"))
- continue;
-
- /* Found one... */
- dma = kmalloc(sizeof(struct sbus_dma), GFP_ATOMIC);
-
- dma->sdev = this_dev;
-
- /* Put at end of dma chain */
- dchain = dma_chain;
- if(dchain) {
- while(dchain->next)
- dchain = dchain->next;
- dchain->next = dma;
- } else {
- /* We're the first in line */
- dma_chain = dma;
- }
-
- dma->regs = sbus_ioremap(&dma->sdev->resource[0], 0,
- dma->sdev->resource[0].end - dma->sdev->resource[0].start + 1,
- "dma");
-
- dma->node = dma->sdev->prom_node;
-
- init_one_dvma(dma, num_dma++);
- }
-}
-
-#ifdef CONFIG_SUN4
-
-#include <asm/sun4paddr.h>
-
-void __init sun4_dvma_init(void)
-{
- struct sbus_dma *dma;
- struct resource r;
-
- if(sun4_dma_physaddr) {
- dma = kmalloc(sizeof(struct sbus_dma), GFP_ATOMIC);
-
- /* No SBUS */
- dma->sdev = NULL;
-
- /* Only one DMA device */
- dma_chain = dma;
-
- memset(&r, 0, sizeof(r));
- r.start = sun4_dma_physaddr;
- dma->regs = sbus_ioremap(&r, 0, PAGE_SIZE, "dma");
-
- /* No prom node */
- dma->node = 0x0;
-
- init_one_dvma(dma, 0);
- } else {
- dma_chain = NULL;
- }
-}
-
-#endif
diff --git a/drivers/sbus/sbus.c b/drivers/sbus/sbus.c
index 53e5e7bf545c..69491625d869 100644
--- a/drivers/sbus/sbus.c
+++ b/drivers/sbus/sbus.c
@@ -285,8 +285,6 @@ static void __init build_one_sbus(struct device_node *dp, int num_sbus)
}
sbus_fixup_all_regs(sbus->devices);
-
- dvma_init(sbus);
}
static int __init sbus_init(void)
diff --git a/drivers/scsi/esp_scsi.h b/drivers/scsi/esp_scsi.h
index bb43a1388188..28e22acf87ea 100644
--- a/drivers/scsi/esp_scsi.h
+++ b/drivers/scsi/esp_scsi.h
@@ -521,7 +521,8 @@ struct esp {
struct completion *eh_reset;
- struct sbus_dma *dma;
+ void *dma;
+ int dmarev;
};
/* A front-end driver for the ESP chip should do the following in
diff --git a/drivers/scsi/sun_esp.c b/drivers/scsi/sun_esp.c
index f9cf70151366..d110b94f111e 100644
--- a/drivers/scsi/sun_esp.c
+++ b/drivers/scsi/sun_esp.c
@@ -1,6 +1,6 @@
/* sun_esp.c: ESP front-end for Sparc SBUS systems.
*
- * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
*/
#include <linux/kernel.h>
@@ -30,39 +30,48 @@
#define dma_write32(VAL, REG) \
sbus_writel((VAL), esp->dma_regs + (REG))
-static int __devinit esp_sbus_find_dma(struct esp *esp, struct sbus_dev *dma_sdev)
-{
- struct sbus_dev *sdev = esp->dev;
- struct sbus_dma *dma;
+/* DVMA chip revisions */
+enum dvma_rev {
+ dvmarev0,
+ dvmaesc1,
+ dvmarev1,
+ dvmarev2,
+ dvmarev3,
+ dvmarevplus,
+ dvmahme
+};
- if (dma_sdev != NULL) {
- for_each_dvma(dma) {
- if (dma->sdev == dma_sdev)
- break;
- }
- } else {
- for_each_dvma(dma) {
- if (dma->sdev == NULL)
- break;
+static int __devinit esp_sbus_setup_dma(struct esp *esp,
+ struct of_device *dma_of)
+{
+ esp->dma = dma_of;
- /* If bus + slot are the same and it has the
- * correct OBP name, it's ours.
- */
- if (sdev->bus == dma->sdev->bus &&
- sdev->slot == dma->sdev->slot &&
- (!strcmp(dma->sdev->prom_name, "dma") ||
- !strcmp(dma->sdev->prom_name, "espdma")))
- break;
- }
- }
+ esp->dma_regs = of_ioremap(&dma_of->resource[0], 0,
+ resource_size(&dma_of->resource[0]),
+ "espdma");
+ if (!esp->dma_regs)
+ return -ENOMEM;
- if (dma == NULL) {
- printk(KERN_ERR PFX "[%s] Cannot find dma.\n",
- sdev->ofdev.node->full_name);
- return -ENODEV;
+ switch (dma_read32(DMA_CSR) & DMA_DEVICE_ID) {
+ case DMA_VERS0:
+ esp->dmarev = dvmarev0;
+ break;
+ case DMA_ESCV1:
+ esp->dmarev = dvmaesc1;
+ break;
+ case DMA_VERS1:
+ esp->dmarev = dvmarev1;
+ break;
+ case DMA_VERS2:
+ esp->dmarev = dvmarev2;
+ break;
+ case DMA_VERHME:
+ esp->dmarev = dvmahme;
+ break;
+ case DMA_VERSPLUS:
+ esp->dmarev = dvmarevplus;
+ break;
}
- esp->dma = dma;
- esp->dma_regs = dma->regs;
return 0;
@@ -165,19 +174,18 @@ static void __devinit esp_get_clock_params(struct esp *esp)
esp->cfreq = fmhz;
}
-static void __devinit esp_get_bursts(struct esp *esp, struct sbus_dev *dma)
+static void __devinit esp_get_bursts(struct esp *esp, struct of_device *dma_of)
{
+ struct device_node *dma_dp = dma_of->node;
struct sbus_dev *sdev = esp->dev;
- struct device_node *dp = sdev->ofdev.node;
- u8 bursts;
+ struct device_node *dp;
+ u8 bursts, val;
+ dp = sdev->ofdev.node;
bursts = of_getintprop_default(dp, "burst-sizes", 0xff);
- if (dma) {
- struct device_node *dma_dp = dma->ofdev.node;
- u8 val = of_getintprop_default(dma_dp, "burst-sizes", 0xff);
- if (val != 0xff)
- bursts &= val;
- }
+ val = of_getintprop_default(dma_dp, "burst-sizes", 0xff);
+ if (val != 0xff)
+ bursts &= val;
if (sdev->bus) {
u8 val = of_getintprop_default(sdev->bus->ofdev.node,
@@ -194,7 +202,7 @@ static void __devinit esp_get_bursts(struct esp *esp, struct sbus_dev *dma)
esp->bursts = bursts;
}
-static void __devinit esp_sbus_get_props(struct esp *esp, struct sbus_dev *espdma)
+static void __devinit esp_sbus_get_props(struct esp *esp, struct of_device *espdma)
{
esp_get_scsi_id(esp);
esp_get_differential(esp);
@@ -259,12 +267,12 @@ static void sbus_esp_reset_dma(struct esp *esp)
can_do_burst64 = (esp->bursts & DMA_BURST64) != 0;
/* Put the DVMA into a known state. */
- if (esp->dma->revision != dvmahme) {
+ if (esp->dmarev != dvmahme) {
val = dma_read32(DMA_CSR);
dma_write32(val | DMA_RST_SCSI, DMA_CSR);
dma_write32(val & ~DMA_RST_SCSI, DMA_CSR);
}
- switch (esp->dma->revision) {
+ switch (esp->dmarev) {
case dvmahme:
dma_write32(DMA_RESET_FAS366, DMA_CSR);
dma_write32(DMA_RST_SCSI, DMA_CSR);
@@ -346,14 +354,14 @@ static void sbus_esp_dma_drain(struct esp *esp)
u32 csr;
int lim;
- if (esp->dma->revision == dvmahme)
+ if (esp->dmarev == dvmahme)
return;
csr = dma_read32(DMA_CSR);
if (!(csr & DMA_FIFO_ISDRAIN))
return;
- if (esp->dma->revision != dvmarev3 && esp->dma->revision != dvmaesc1)
+ if (esp->dmarev != dvmarev3 && esp->dmarev != dvmaesc1)
dma_write32(csr | DMA_FIFO_STDRAIN, DMA_CSR);
lim = 1000;
@@ -369,7 +377,7 @@ static void sbus_esp_dma_drain(struct esp *esp)
static void sbus_esp_dma_invalidate(struct esp *esp)
{
- if (esp->dma->revision == dvmahme) {
+ if (esp->dmarev == dvmahme) {
dma_write32(DMA_RST_SCSI, DMA_CSR);
esp->prev_hme_dmacsr = ((esp->prev_hme_dmacsr |
@@ -440,7 +448,7 @@ static void sbus_esp_send_dma_cmd(struct esp *esp, u32 addr, u32 esp_count,
else
csr &= ~DMA_ST_WRITE;
dma_write32(csr, DMA_CSR);
- if (esp->dma->revision == dvmaesc1) {
+ if (esp->dmarev == dvmaesc1) {
u32 end = PAGE_ALIGN(addr + dma_count + 16U);
dma_write32(end - addr, DMA_COUNT);
}
@@ -478,7 +486,7 @@ static const struct esp_driver_ops sbus_esp_ops = {
static int __devinit esp_sbus_probe_one(struct device *dev,
struct sbus_dev *esp_dev,
- struct sbus_dev *espdma,
+ struct of_device *espdma,
struct sbus_bus *sbus,
int hme)
{
@@ -503,7 +511,7 @@ static int __devinit esp_sbus_probe_one(struct device *dev,
if (hme)
esp->flags |= ESP_FLAG_WIDE_CAPABLE;
- err = esp_sbus_find_dma(esp, espdma);
+ err = esp_sbus_setup_dma(esp, espdma);
if (err < 0)
goto fail_unlink;
@@ -525,7 +533,7 @@ static int __devinit esp_sbus_probe_one(struct device *dev,
* come up with the reset bit set, so make sure that
* is clear first.
*/
- if (esp->dma->revision == dvmaesc1) {
+ if (esp->dmarev == dvmaesc1) {
u32 val = dma_read32(DMA_CSR);
dma_write32(val & ~DMA_RST_SCSI, DMA_CSR);
@@ -556,26 +564,32 @@ fail:
static int __devinit esp_sbus_probe(struct of_device *dev, const struct of_device_id *match)
{
struct sbus_dev *sdev = to_sbus_device(&dev->dev);
+ struct device_node *dma_node = NULL;
struct device_node *dp = dev->node;
- struct sbus_dev *dma_sdev = NULL;
+ struct of_device *dma_of = NULL;
int hme = 0;
if (dp->parent &&
(!strcmp(dp->parent->name, "espdma") ||
!strcmp(dp->parent->name, "dma")))
- dma_sdev = sdev->parent;
+ dma_node = dp->parent;
else if (!strcmp(dp->name, "SUNW,fas")) {
- dma_sdev = sdev;
+ dma_node = sdev->ofdev.node;
hme = 1;
}
+ if (dma_node)
+ dma_of = of_find_device_by_node(dma_node);
+ if (!dma_of)
+ return -ENODEV;
- return esp_sbus_probe_one(&dev->dev, sdev, dma_sdev,
+ return esp_sbus_probe_one(&dev->dev, sdev, dma_of,
sdev->bus, hme);
}
static int __devexit esp_sbus_remove(struct of_device *dev)
{
struct esp *esp = dev_get_drvdata(&dev->dev);
+ struct of_device *dma_of = esp->dma;
unsigned int irq = esp->host->irq;
u32 val;
@@ -590,6 +604,8 @@ static int __devexit esp_sbus_remove(struct of_device *dev)
esp->command_block,
esp->command_block_dma);
sbus_iounmap(esp->regs, SBUS_ESP_REG_SIZE);
+ of_iounmap(&dma_of->resource[0], esp->dma_regs,
+ resource_size(&dma_of->resource[0]));
scsi_host_put(esp->host);

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