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-rw-r--r--drivers/scsi/a2091.c48
1 files changed, 26 insertions, 22 deletions
diff --git a/drivers/scsi/a2091.c b/drivers/scsi/a2091.c
index 95584059863b..308541ff85cf 100644
--- a/drivers/scsi/a2091.c
+++ b/drivers/scsi/a2091.c
@@ -22,17 +22,15 @@
#include <linux/stat.h>
-#define DMA(ptr) ((a2091_scsiregs *)((ptr)->base))
-
static int a2091_release(struct Scsi_Host *instance);
-static irqreturn_t a2091_intr(int irq, void *_instance)
+static irqreturn_t a2091_intr(int irq, void *data)
{
+ struct Scsi_Host *instance = data;
+ a2091_scsiregs *regs = (a2091_scsiregs *)(instance->base);
+ unsigned int status = regs->ISTR;
unsigned long flags;
- unsigned int status;
- struct Scsi_Host *instance = (struct Scsi_Host *)_instance;
- status = DMA(instance)->ISTR;
if (!(status & (ISTR_INT_F | ISTR_INT_P)) || !(status & ISTR_INTS))
return IRQ_NONE;
@@ -46,6 +44,7 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
{
struct Scsi_Host *instance = cmd->device->host;
struct WD33C93_hostdata *hdata = shost_priv(instance);
+ a2091_scsiregs *regs = (a2091_scsiregs *)(instance->base);
unsigned short cntr = CNTR_PDMD | CNTR_INTEN;
unsigned long addr = virt_to_bus(cmd->SCp.ptr);
@@ -87,10 +86,10 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
/* remember direction */
hdata->dma_dir = dir_in;
- DMA(cmd->device->host)->CNTR = cntr;
+ regs->CNTR = cntr;
/* setup DMA *physical* address */
- DMA(cmd->device->host)->ACR = addr;
+ regs->ACR = addr;
if (dir_in) {
/* invalidate any cache */
@@ -100,7 +99,7 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
cache_push(addr, cmd->SCp.this_residual);
}
/* start DMA */
- DMA(cmd->device->host)->ST_DMA = 1;
+ regs->ST_DMA = 1;
/* return success */
return 0;
@@ -110,6 +109,7 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
int status)
{
struct WD33C93_hostdata *hdata = shost_priv(instance);
+ a2091_scsiregs *regs = (a2091_scsiregs *)(instance->base);
/* disable SCSI interrupts */
unsigned short cntr = CNTR_PDMD;
@@ -118,23 +118,23 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
cntr |= CNTR_DDIR;
/* disable SCSI interrupts */
- DMA(instance)->CNTR = cntr;
+ regs->CNTR = cntr;
/* flush if we were reading */
if (hdata->dma_dir) {
- DMA(instance)->FLUSH = 1;
- while (!(DMA(instance)->ISTR & ISTR_FE_FLG))
+ regs->FLUSH = 1;
+ while (!(regs->ISTR & ISTR_FE_FLG))
;
}
/* clear a possible interrupt */
- DMA(instance)->CINT = 1;
+ regs->CINT = 1;
/* stop DMA */
- DMA(instance)->SP_DMA = 1;
+ regs->SP_DMA = 1;
/* restore the CONTROL bits (minus the direction flag) */
- DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
+ regs->CNTR = CNTR_PDMD | CNTR_INTEN;
/* copy from a bounce buffer, if necessary */
if (status && hdata->dma_bounce_buffer) {
@@ -153,7 +153,8 @@ static int __init a2091_detect(struct scsi_host_template *tpnt)
struct Scsi_Host *instance;
unsigned long address;
struct zorro_dev *z = NULL;
- wd33c93_regs regs;
+ wd33c93_regs wdregs;
+ a2091_scsiregs *regs;
struct WD33C93_hostdata *hdata;
int num_a2091 = 0;
@@ -178,19 +179,20 @@ static int __init a2091_detect(struct scsi_host_template *tpnt)
instance->base = ZTWO_VADDR(address);
instance->irq = IRQ_AMIGA_PORTS;
instance->unique_id = z->slotaddr;
- DMA(instance)->DAWR = DAWR_A2091;
- regs.SASR = &(DMA(instance)->SASR);
- regs.SCMD = &(DMA(instance)->SCMD);
+ regs = (a2091_scsiregs *)(instance->base);
+ regs->DAWR = DAWR_A2091;
+ wdregs.SASR = &regs->SASR;
+ wdregs.SCMD = &regs->SCMD;
hdata = shost_priv(instance);
hdata->no_sync = 0xff;
hdata->fast = 0;
hdata->dma_mode = CTRL_DMA;
- wd33c93_init(instance, regs, dma_setup, dma_stop,
+ wd33c93_init(instance, wdregs, dma_setup, dma_stop,
WD33C93_FS_8_10);
if (request_irq(IRQ_AMIGA_PORTS, a2091_intr, IRQF_SHARED,
"A2091 SCSI", instance))
goto unregister;
- DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
+ regs->CNTR = CNTR_PDMD | CNTR_INTEN;
num_a2091++;
continue;
@@ -241,7 +243,9 @@ static struct scsi_host_template driver_template = {
static int a2091_release(struct Scsi_Host *instance)
{
#ifdef MODULE
- DMA(instance)->CNTR = 0;
+ a2091_scsiregs *regs = (a2091_scsiregs *)(instance->base);
+
+ regs->CNTR = 0;
release_mem_region(ZTWO_PADDR(instance->base), 256);
free_irq(IRQ_AMIGA_PORTS, instance);
#endif