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sun_esp: Convert to pure OF driver.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2008-08-27 00:20:58 -07:00
parent 27167e0e63
commit 05bb5e93f2
1 changed files with 64 additions and 72 deletions
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136
drivers/scsi/sun_esp.c
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@@ -10,21 +10,21 @@
#include <linux/mm.h> #include <linux/mm.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/dma-mapping.h> #include <linux/dma-mapping.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <asm/irq.h> #include <asm/irq.h>
#include <asm/io.h> #include <asm/io.h>
#include <asm/dma.h> #include <asm/dma.h>
#include <asm/sbus.h>
#include <scsi/scsi_host.h> #include <scsi/scsi_host.h>
#include "esp_scsi.h" #include "esp_scsi.h"
#define DRV_MODULE_NAME "sun_esp" #define DRV_MODULE_NAME "sun_esp"
#define PFX DRV_MODULE_NAME ": " #define PFX DRV_MODULE_NAME ": "
#define DRV_VERSION "1.000" #define DRV_VERSION "1.100"
#define DRV_MODULE_RELDATE "April 19, 2007" #define DRV_MODULE_RELDATE "August 27, 2008"
#define dma_read32(REG) \ #define dma_read32(REG) \
sbus_readl(esp->dma_regs + (REG)) sbus_readl(esp->dma_regs + (REG))
@@ -80,18 +80,18 @@ static int __devinit esp_sbus_setup_dma(struct esp *esp,
static int __devinit esp_sbus_map_regs(struct esp *esp, int hme) static int __devinit esp_sbus_map_regs(struct esp *esp, int hme)
{ {
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
struct resource *res; struct resource *res;
/* On HME, two reg sets exist, first is DVMA, /* On HME, two reg sets exist, first is DVMA,
* second is ESP registers. * second is ESP registers.
*/ */
if (hme) if (hme)
res = &sdev->resource[1]; res = &op->resource[1];
else else
res = &sdev->resource[0]; res = &op->resource[0];
esp->regs = sbus_ioremap(res, 0, SBUS_ESP_REG_SIZE, "ESP"); esp->regs = of_ioremap(res, 0, SBUS_ESP_REG_SIZE, "ESP");
if (!esp->regs) if (!esp->regs)
return -ENOMEM; return -ENOMEM;
@@ -100,9 +100,9 @@ static int __devinit esp_sbus_map_regs(struct esp *esp, int hme)
static int __devinit esp_sbus_map_command_block(struct esp *esp) static int __devinit esp_sbus_map_command_block(struct esp *esp)
{ {
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
esp->command_block = dma_alloc_coherent(&sdev->ofdev.dev, 16, esp->command_block = dma_alloc_coherent(&op->dev, 16,
&esp->command_block_dma, &esp->command_block_dma,
GFP_ATOMIC); GFP_ATOMIC);
if (!esp->command_block) if (!esp->command_block)
@@ -113,17 +113,18 @@ static int __devinit esp_sbus_map_command_block(struct esp *esp)
static int __devinit esp_sbus_register_irq(struct esp *esp) static int __devinit esp_sbus_register_irq(struct esp *esp)
{ {
struct Scsi_Host *host = esp->host; struct Scsi_Host *host = esp->host;
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
host->irq = sdev->irqs[0]; host->irq = op->irqs[0];
return request_irq(host->irq, scsi_esp_intr, IRQF_SHARED, "ESP", esp); return request_irq(host->irq, scsi_esp_intr, IRQF_SHARED, "ESP", esp);
} }
static void __devinit esp_get_scsi_id(struct esp *esp) static void __devinit esp_get_scsi_id(struct esp *esp, struct of_device *espdma)
{ {
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
struct device_node *dp = sdev->ofdev.node; struct device_node *dp;
dp = op->node;
esp->scsi_id = of_getintprop_default(dp, "initiator-id", 0xff); esp->scsi_id = of_getintprop_default(dp, "initiator-id", 0xff);
if (esp->scsi_id != 0xff) if (esp->scsi_id != 0xff)
goto done; goto done;
@@ -132,13 +133,7 @@ static void __devinit esp_get_scsi_id(struct esp *esp)
if (esp->scsi_id != 0xff) if (esp->scsi_id != 0xff)
goto done; goto done;
if (!sdev->bus) { esp->scsi_id = of_getintprop_default(espdma->node,
/* SUN4 */
esp->scsi_id = 7;
goto done;
}
esp->scsi_id = of_getintprop_default(sdev->bus->ofdev.node,
"scsi-initiator-id", 7); "scsi-initiator-id", 7);
done: done:
@@ -148,9 +143,10 @@ done:
static void __devinit esp_get_differential(struct esp *esp) static void __devinit esp_get_differential(struct esp *esp)
{ {
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
struct device_node *dp = sdev->ofdev.node; struct device_node *dp;
dp = op->node;
if (of_find_property(dp, "differential", NULL)) if (of_find_property(dp, "differential", NULL))
esp->flags |= ESP_FLAG_DIFFERENTIAL; esp->flags |= ESP_FLAG_DIFFERENTIAL;
else else
@@ -159,19 +155,16 @@ static void __devinit esp_get_differential(struct esp *esp)
static void __devinit esp_get_clock_params(struct esp *esp) static void __devinit esp_get_clock_params(struct esp *esp)
{ {
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
struct device_node *dp = sdev->ofdev.node; struct device_node *bus_dp, *dp;
struct device_node *bus_dp;
int fmhz; int fmhz;
bus_dp = NULL; dp = op->node;
if (sdev != NULL && sdev->bus != NULL) bus_dp = dp->parent;
bus_dp = sdev->bus->ofdev.node;
fmhz = of_getintprop_default(dp, "clock-frequency", 0); fmhz = of_getintprop_default(dp, "clock-frequency", 0);
if (fmhz == 0) if (fmhz == 0)
fmhz = (!bus_dp) ? 0 : fmhz = of_getintprop_default(bus_dp, "clock-frequency", 0);
of_getintprop_default(bus_dp, "clock-frequency", 0);
esp->cfreq = fmhz; esp->cfreq = fmhz;
} }
@@ -179,22 +172,19 @@ static void __devinit esp_get_clock_params(struct esp *esp)
static void __devinit esp_get_bursts(struct esp *esp, struct of_device *dma_of) static void __devinit esp_get_bursts(struct esp *esp, struct of_device *dma_of)
{ {
struct device_node *dma_dp = dma_of->node; struct device_node *dma_dp = dma_of->node;
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
struct device_node *dp; struct device_node *dp;
u8 bursts, val; u8 bursts, val;
dp = sdev->ofdev.node; dp = op->node;
bursts = of_getintprop_default(dp, "burst-sizes", 0xff); bursts = of_getintprop_default(dp, "burst-sizes", 0xff);
val = of_getintprop_default(dma_dp, "burst-sizes", 0xff); val = of_getintprop_default(dma_dp, "burst-sizes", 0xff);
if (val != 0xff) if (val != 0xff)
bursts &= val; bursts &= val;
if (sdev->bus) { val = of_getintprop_default(dma_dp->parent, "burst-sizes", 0xff);
u8 val = of_getintprop_default(sdev->bus->ofdev.node, if (val != 0xff)
"burst-sizes", 0xff); bursts &= val;
if (val != 0xff)
bursts &= val;
}
if (bursts == 0xff || if (bursts == 0xff ||
(bursts & DMA_BURST16) == 0 || (bursts & DMA_BURST16) == 0 ||
@@ -206,7 +196,7 @@ static void __devinit esp_get_bursts(struct esp *esp, struct of_device *dma_of)
static void __devinit esp_sbus_get_props(struct esp *esp, struct of_device *espdma) static void __devinit esp_sbus_get_props(struct esp *esp, struct of_device *espdma)
{ {
esp_get_scsi_id(esp); esp_get_scsi_id(esp, espdma);
esp_get_differential(esp); esp_get_differential(esp);
esp_get_clock_params(esp); esp_get_clock_params(esp);
esp_get_bursts(esp, espdma); esp_get_bursts(esp, espdma);
@@ -225,33 +215,33 @@ static u8 sbus_esp_read8(struct esp *esp, unsigned long reg)
static dma_addr_t sbus_esp_map_single(struct esp *esp, void *buf, static dma_addr_t sbus_esp_map_single(struct esp *esp, void *buf,
size_t sz, int dir) size_t sz, int dir)
{ {
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
return dma_map_single(&sdev->ofdev.dev, buf, sz, dir); return dma_map_single(&op->dev, buf, sz, dir);
} }
static int sbus_esp_map_sg(struct esp *esp, struct scatterlist *sg, static int sbus_esp_map_sg(struct esp *esp, struct scatterlist *sg,
int num_sg, int dir) int num_sg, int dir)
{ {
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
return dma_map_sg(&sdev->ofdev.dev, sg, num_sg, dir); return dma_map_sg(&op->dev, sg, num_sg, dir);
} }
static void sbus_esp_unmap_single(struct esp *esp, dma_addr_t addr, static void sbus_esp_unmap_single(struct esp *esp, dma_addr_t addr,
size_t sz, int dir) size_t sz, int dir)
{ {
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
dma_unmap_single(&sdev->ofdev.dev, addr, sz, dir); dma_unmap_single(&op->dev, addr, sz, dir);
} }
static void sbus_esp_unmap_sg(struct esp *esp, struct scatterlist *sg, static void sbus_esp_unmap_sg(struct esp *esp, struct scatterlist *sg,
int num_sg, int dir) int num_sg, int dir)
{ {
struct sbus_dev *sdev = esp->dev; struct of_device *op = esp->dev;
dma_unmap_sg(&sdev->ofdev.dev, sg, num_sg, dir); dma_unmap_sg(&op->dev, sg, num_sg, dir);
} }
static int sbus_esp_irq_pending(struct esp *esp) static int sbus_esp_irq_pending(struct esp *esp)
@@ -265,14 +255,14 @@ static void sbus_esp_reset_dma(struct esp *esp)
{ {
int can_do_burst16, can_do_burst32, can_do_burst64; int can_do_burst16, can_do_burst32, can_do_burst64;
int can_do_sbus64, lim; int can_do_sbus64, lim;
struct sbus_dev *sdev; struct of_device *op;
u32 val; u32 val;
can_do_burst16 = (esp->bursts & DMA_BURST16) != 0; can_do_burst16 = (esp->bursts & DMA_BURST16) != 0;
can_do_burst32 = (esp->bursts & DMA_BURST32) != 0; can_do_burst32 = (esp->bursts & DMA_BURST32) != 0;
can_do_burst64 = 0; can_do_burst64 = 0;
can_do_sbus64 = 0; can_do_sbus64 = 0;
sdev = esp->dev; op = esp->dev;
if (sbus_can_dma_64bit()) if (sbus_can_dma_64bit())
can_do_sbus64 = 1; can_do_sbus64 = 1;
if (sbus_can_burst64()) if (sbus_can_burst64())
@@ -302,7 +292,7 @@ static void sbus_esp_reset_dma(struct esp *esp)
if (can_do_sbus64) { if (can_do_sbus64) {
esp->prev_hme_dmacsr |= DMA_SCSI_SBUS64; esp->prev_hme_dmacsr |= DMA_SCSI_SBUS64;
sbus_set_sbus64(&sdev->ofdev.dev, esp->bursts); sbus_set_sbus64(&op->dev, esp->bursts);
} }
lim = 1000; lim = 1000;
@@ -496,10 +486,8 @@ static const struct esp_driver_ops sbus_esp_ops = {
.dma_error = sbus_esp_dma_error, .dma_error = sbus_esp_dma_error,
}; };
static int __devinit esp_sbus_probe_one(struct device *dev, static int __devinit esp_sbus_probe_one(struct of_device *op,
struct sbus_dev *esp_dev,
struct of_device *espdma, struct of_device *espdma,
struct sbus_bus *sbus,
int hme) int hme)
{ {
struct scsi_host_template *tpnt = &scsi_esp_template; struct scsi_host_template *tpnt = &scsi_esp_template;
@@ -517,7 +505,7 @@ static int __devinit esp_sbus_probe_one(struct device *dev,
esp = shost_priv(host); esp = shost_priv(host);
esp->host = host; esp->host = host;
esp->dev = esp_dev; esp->dev = op;
esp->ops = &sbus_esp_ops; esp->ops = &sbus_esp_ops;
if (hme) if (hme)
@@ -551,9 +539,9 @@ static int __devinit esp_sbus_probe_one(struct device *dev,
dma_write32(val & ~DMA_RST_SCSI, DMA_CSR); dma_write32(val & ~DMA_RST_SCSI, DMA_CSR);
} }
dev_set_drvdata(&esp_dev->ofdev.dev, esp); dev_set_drvdata(&op->dev, esp);
err = scsi_esp_register(esp, dev); err = scsi_esp_register(esp, &op->dev);
if (err) if (err)
goto fail_free_irq; goto fail_free_irq;
@@ -562,22 +550,21 @@ static int __devinit esp_sbus_probe_one(struct device *dev,
fail_free_irq: fail_free_irq:
free_irq(host->irq, esp); free_irq(host->irq, esp);
fail_unmap_command_block: fail_unmap_command_block:
dma_free_coherent(&esp_dev->ofdev.dev, 16, dma_free_coherent(&op->dev, 16,
esp->command_block, esp->command_block,
esp->command_block_dma); esp->command_block_dma);
fail_unmap_regs: fail_unmap_regs:
sbus_iounmap(esp->regs, SBUS_ESP_REG_SIZE); of_iounmap(&op->resource[(hme ? 1 : 0)], esp->regs, SBUS_ESP_REG_SIZE);
fail_unlink: fail_unlink:
scsi_host_put(host); scsi_host_put(host);
fail: fail:
return err; return err;
} }
static int __devinit esp_sbus_probe(struct of_device *dev, const struct of_device_id *match) static int __devinit esp_sbus_probe(struct of_device *op, const struct of_device_id *match)
{ {
struct sbus_dev *sdev = to_sbus_device(&dev->dev);
struct device_node *dma_node = NULL; struct device_node *dma_node = NULL;
struct device_node *dp = dev->node; struct device_node *dp = op->node;
struct of_device *dma_of = NULL; struct of_device *dma_of = NULL;
int hme = 0; int hme = 0;
@@ -586,7 +573,7 @@ static int __devinit esp_sbus_probe(struct of_device *dev, const struct of_devic
!strcmp(dp->parent->name, "dma"))) !strcmp(dp->parent->name, "dma")))
dma_node = dp->parent; dma_node = dp->parent;
else if (!strcmp(dp->name, "SUNW,fas")) { else if (!strcmp(dp->name, "SUNW,fas")) {
dma_node = sdev->ofdev.node; dma_node = op->node;
hme = 1; hme = 1;
} }
if (dma_node) if (dma_node)
@@ -594,16 +581,15 @@ static int __devinit esp_sbus_probe(struct of_device *dev, const struct of_devic
if (!dma_of) if (!dma_of)
return -ENODEV; return -ENODEV;
return esp_sbus_probe_one(&dev->dev, sdev, dma_of, return esp_sbus_probe_one(op, dma_of, hme);
sdev->bus, hme);
} }
static int __devexit esp_sbus_remove(struct of_device *dev) static int __devexit esp_sbus_remove(struct of_device *op)
{ {
struct esp *esp = dev_get_drvdata(&dev->dev); struct esp *esp = dev_get_drvdata(&op->dev);
struct sbus_dev *sdev = esp->dev;
struct of_device *dma_of = esp->dma; struct of_device *dma_of = esp->dma;
unsigned int irq = esp->host->irq; unsigned int irq = esp->host->irq;
bool is_hme;
u32 val; u32 val;
scsi_esp_unregister(esp); scsi_esp_unregister(esp);
@@ -613,15 +599,21 @@ static int __devexit esp_sbus_remove(struct of_device *dev)
dma_write32(val & ~DMA_INT_ENAB, DMA_CSR); dma_write32(val & ~DMA_INT_ENAB, DMA_CSR);
free_irq(irq, esp); free_irq(irq, esp);
dma_free_coherent(&sdev->ofdev.dev, 16,
is_hme = (esp->dmarev == dvmahme);
dma_free_coherent(&op->dev, 16,
esp->command_block, esp->command_block,
esp->command_block_dma); esp->command_block_dma);
sbus_iounmap(esp->regs, SBUS_ESP_REG_SIZE); of_iounmap(&op->resource[(is_hme ? 1 : 0)], esp->regs,
SBUS_ESP_REG_SIZE);
of_iounmap(&dma_of->resource[0], esp->dma_regs, of_iounmap(&dma_of->resource[0], esp->dma_regs,
resource_size(&dma_of->resource[0])); resource_size(&dma_of->resource[0]));
scsi_host_put(esp->host); scsi_host_put(esp->host);
dev_set_drvdata(&op->dev, NULL);
return 0; return 0;
} }
@@ -648,7 +640,7 @@ static struct of_platform_driver esp_sbus_driver = {
static int __init sunesp_init(void) static int __init sunesp_init(void)
{ {
return of_register_driver(&esp_sbus_driver, &sbus_bus_type); return of_register_driver(&esp_sbus_driver, &of_bus_type);
} }
static void __exit sunesp_exit(void) static void __exit sunesp_exit(void)