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path: root/drivers/scsi/mac_esp.c
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Diffstat (limited to 'drivers/scsi/mac_esp.c')
-rw-r--r--drivers/scsi/mac_esp.c217
1 files changed, 11 insertions, 206 deletions
diff --git a/drivers/scsi/mac_esp.c b/drivers/scsi/mac_esp.c
index eb551f3cc471..764d320bb2ca 100644
--- a/drivers/scsi/mac_esp.c
+++ b/drivers/scsi/mac_esp.c
@@ -52,14 +52,12 @@ struct mac_esp_priv {
struct esp *esp;
void __iomem *pdma_regs;
void __iomem *pdma_io;
- int error;
};
static struct esp *esp_chips[2];
static DEFINE_SPINLOCK(esp_chips_lock);
#define MAC_ESP_GET_PRIV(esp) ((struct mac_esp_priv *) \
- platform_get_drvdata((struct platform_device *) \
- (esp->dev)))
+ dev_get_drvdata((esp)->dev))
static inline void mac_esp_write8(struct esp *esp, u8 val, unsigned long reg)
{
@@ -71,38 +69,6 @@ static inline u8 mac_esp_read8(struct esp *esp, unsigned long reg)
return nubus_readb(esp->regs + reg * 16);
}
-/* For pseudo DMA and PIO we need the virtual address
- * so this address mapping is the identity mapping.
- */
-
-static dma_addr_t mac_esp_map_single(struct esp *esp, void *buf,
- size_t sz, int dir)
-{
- return (dma_addr_t)buf;
-}
-
-static int mac_esp_map_sg(struct esp *esp, struct scatterlist *sg,
- int num_sg, int dir)
-{
- int i;
-
- for (i = 0; i < num_sg; i++)
- sg[i].dma_address = (u32)sg_virt(&sg[i]);
- return num_sg;
-}
-
-static void mac_esp_unmap_single(struct esp *esp, dma_addr_t addr,
- size_t sz, int dir)
-{
- /* Nothing to do. */
-}
-
-static void mac_esp_unmap_sg(struct esp *esp, struct scatterlist *sg,
- int num_sg, int dir)
-{
- /* Nothing to do. */
-}
-
static void mac_esp_reset_dma(struct esp *esp)
{
/* Nothing to do. */
@@ -120,12 +86,11 @@ static void mac_esp_dma_invalidate(struct esp *esp)
static int mac_esp_dma_error(struct esp *esp)
{
- return MAC_ESP_GET_PRIV(esp)->error;
+ return esp->send_cmd_error;
}
static inline int mac_esp_wait_for_empty_fifo(struct esp *esp)
{
- struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
int i = 500000;
do {
@@ -140,7 +105,7 @@ static inline int mac_esp_wait_for_empty_fifo(struct esp *esp)
printk(KERN_ERR PFX "FIFO is not empty (sreg %02x)\n",
esp_read8(ESP_STATUS));
- mep->error = 1;
+ esp->send_cmd_error = 1;
return 1;
}
@@ -166,7 +131,7 @@ static inline int mac_esp_wait_for_dreq(struct esp *esp)
printk(KERN_ERR PFX "PDMA timeout (sreg %02x)\n",
esp_read8(ESP_STATUS));
- mep->error = 1;
+ esp->send_cmd_error = 1;
return 1;
}
@@ -233,7 +198,7 @@ static void mac_esp_send_pdma_cmd(struct esp *esp, u32 addr, u32 esp_count,
{
struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
- mep->error = 0;
+ esp->send_cmd_error = 0;
if (!write)
scsi_esp_cmd(esp, ESP_CMD_FLUSH);
@@ -271,164 +236,6 @@ static void mac_esp_send_pdma_cmd(struct esp *esp, u32 addr, u32 esp_count,
} while (esp_count);
}
-/*
- * Programmed IO routines follow.
- */
-
-static inline unsigned int mac_esp_wait_for_fifo(struct esp *esp)
-{
- int i = 500000;
-
- do {
- unsigned int fbytes = esp_read8(ESP_FFLAGS) & ESP_FF_FBYTES;
-
- if (fbytes)
- return fbytes;
-
- udelay(2);
- } while (--i);
-
- printk(KERN_ERR PFX "FIFO is empty (sreg %02x)\n",
- esp_read8(ESP_STATUS));
- return 0;
-}
-
-static inline int mac_esp_wait_for_intr(struct esp *esp)
-{
- struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
- int i = 500000;
-
- do {
- esp->sreg = esp_read8(ESP_STATUS);
- if (esp->sreg & ESP_STAT_INTR)
- return 0;
-
- udelay(2);
- } while (--i);
-
- printk(KERN_ERR PFX "IRQ timeout (sreg %02x)\n", esp->sreg);
- mep->error = 1;
- return 1;
-}
-
-#define MAC_ESP_PIO_LOOP(operands, reg1) \
- asm volatile ( \
- "1: moveb " operands " \n" \
- " subqw #1,%1 \n" \
- " jbne 1b \n" \
- : "+a" (addr), "+r" (reg1) \
- : "a" (fifo))
-
-#define MAC_ESP_PIO_FILL(operands, reg1) \
- asm volatile ( \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " moveb " operands " \n" \
- " subqw #8,%1 \n" \
- " subqw #8,%1 \n" \
- : "+a" (addr), "+r" (reg1) \
- : "a" (fifo))
-
-#define MAC_ESP_FIFO_SIZE 16
-
-static void mac_esp_send_pio_cmd(struct esp *esp, u32 addr, u32 esp_count,
- u32 dma_count, int write, u8 cmd)
-{
- struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
- u8 __iomem *fifo = esp->regs + ESP_FDATA * 16;
- u8 phase = esp->sreg & ESP_STAT_PMASK;
-
- cmd &= ~ESP_CMD_DMA;
- mep->error = 0;
-
- if (write) {
- u8 *dst = (u8 *)addr;
- u8 mask = ~(phase == ESP_MIP ? ESP_INTR_FDONE : ESP_INTR_BSERV);
-
- scsi_esp_cmd(esp, cmd);
-
- while (1) {
- if (!mac_esp_wait_for_fifo(esp))
- break;
-
- *dst++ = esp_read8(ESP_FDATA);
- --esp_count;
-
- if (!esp_count)
- break;
-
- if (mac_esp_wait_for_intr(esp))
- break;
-
- if ((esp->sreg & ESP_STAT_PMASK) != phase)
- break;
-
- esp->ireg = esp_read8(ESP_INTRPT);
- if (esp->ireg & mask) {
- mep->error = 1;
- break;
- }
-
- if (phase == ESP_MIP)
- scsi_esp_cmd(esp, ESP_CMD_MOK);
-
- scsi_esp_cmd(esp, ESP_CMD_TI);
- }
- } else {
- scsi_esp_cmd(esp, ESP_CMD_FLUSH);
-
- if (esp_count >= MAC_ESP_FIFO_SIZE)
- MAC_ESP_PIO_FILL("%0@+,%2@", esp_count);
- else
- MAC_ESP_PIO_LOOP("%0@+,%2@", esp_count);
-
- scsi_esp_cmd(esp, cmd);
-
- while (esp_count) {
- unsigned int n;
-
- if (mac_esp_wait_for_intr(esp))
- break;
-
- if ((esp->sreg & ESP_STAT_PMASK) != phase)
- break;
-
- esp->ireg = esp_read8(ESP_INTRPT);
- if (esp->ireg & ~ESP_INTR_BSERV) {
- mep->error = 1;
- break;
- }
-
- n = MAC_ESP_FIFO_SIZE -
- (esp_read8(ESP_FFLAGS) & ESP_FF_FBYTES);
- if (n > esp_count)
- n = esp_count;
-
- if (n == MAC_ESP_FIFO_SIZE) {
- MAC_ESP_PIO_FILL("%0@+,%2@", esp_count);
- } else {
- esp_count -= n;
- MAC_ESP_PIO_LOOP("%0@+,%2@", n);
- }
-
- scsi_esp_cmd(esp, ESP_CMD_TI);
- }
- }
-}
-
static int mac_esp_irq_pending(struct esp *esp)
{
if (esp_read8(ESP_STATUS) & ESP_STAT_INTR)
@@ -470,10 +277,6 @@ static irqreturn_t mac_scsi_esp_intr(int irq, void *dev_id)
static struct esp_driver_ops mac_esp_ops = {
.esp_write8 = mac_esp_write8,
.esp_read8 = mac_esp_read8,
- .map_single = mac_esp_map_single,
- .map_sg = mac_esp_map_sg,
- .unmap_single = mac_esp_unmap_single,
- .unmap_sg = mac_esp_unmap_sg,
.irq_pending = mac_esp_irq_pending,
.dma_length_limit = mac_esp_dma_length_limit,
.reset_dma = mac_esp_reset_dma,
@@ -508,7 +311,7 @@ static int esp_mac_probe(struct platform_device *dev)
esp = shost_priv(host);
esp->host = host;
- esp->dev = dev;
+ esp->dev = &dev->dev;
esp->command_block = kzalloc(16, GFP_KERNEL);
if (!esp->command_block)
@@ -551,14 +354,16 @@ static int esp_mac_probe(struct platform_device *dev)
mep->pdma_regs = NULL;
break;
}
+ esp->fifo_reg = esp->regs + ESP_FDATA * 16;
esp->ops = &mac_esp_ops;
+ esp->flags = ESP_FLAG_NO_DMA_MAP;
if (mep->pdma_io == NULL) {
printk(KERN_INFO PFX "using PIO for controller %d\n", dev->id);
esp_write8(0, ESP_TCLOW);
esp_write8(0, ESP_TCMED);
- esp->flags = ESP_FLAG_DISABLE_SYNC;
- mac_esp_ops.send_dma_cmd = mac_esp_send_pio_cmd;
+ esp->flags |= ESP_FLAG_DISABLE_SYNC;
+ mac_esp_ops.send_dma_cmd = esp_send_pio_cmd;
} else {
printk(KERN_INFO PFX "using PDMA for controller %d\n", dev->id);
}
@@ -577,7 +382,7 @@ static int esp_mac_probe(struct platform_device *dev)
esp_chips[dev->id] = esp;
spin_unlock(&esp_chips_lock);
- err = scsi_esp_register(esp, &dev->dev);
+ err = scsi_esp_register(esp);
if (err)
goto fail_free_irq;
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-14 19:02:33 +0300