diff options
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/a3000.c | 44 |
1 files changed, 25 insertions, 19 deletions
diff --git a/drivers/scsi/a3000.c b/drivers/scsi/a3000.c index bc6eb69f5fd..ae9b25a3e3e 100644 --- a/drivers/scsi/a3000.c +++ b/drivers/scsi/a3000.c @@ -22,16 +22,15 @@ #include <linux/stat.h> -#define DMA(ptr) ((a3000_scsiregs *)((ptr)->base)) - static struct Scsi_Host *a3000_host = NULL; static int a3000_release(struct Scsi_Host *instance); static irqreturn_t a3000_intr(int irq, void *dummy) { + a3000_scsiregs *regs = (a3000_scsiregs *)(a3000_host->base); + unsigned int status = regs->ISTR; unsigned long flags; - unsigned int status = DMA(a3000_host)->ISTR; if (!(status & ISTR_INT_P)) return IRQ_NONE; @@ -48,6 +47,7 @@ static irqreturn_t a3000_intr(int irq, void *dummy) static int dma_setup(struct scsi_cmnd *cmd, int dir_in) { struct WD33C93_hostdata *hdata = shost_priv(a3000_host); + a3000_scsiregs *regs = (a3000_scsiregs *)(a3000_host->base); unsigned short cntr = CNTR_PDMD | CNTR_INTEN; unsigned long addr = virt_to_bus(cmd->SCp.ptr); @@ -84,10 +84,10 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in) /* remember direction */ hdata->dma_dir = dir_in; - DMA(a3000_host)->CNTR = cntr; + regs->CNTR = cntr; /* setup DMA *physical* address */ - DMA(a3000_host)->ACR = addr; + regs->ACR = addr; if (dir_in) { /* invalidate any cache */ @@ -99,7 +99,7 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in) /* start DMA */ mb(); /* make sure setup is completed */ - DMA(a3000_host)->ST_DMA = 1; + regs->ST_DMA = 1; mb(); /* make sure DMA has started before next IO */ /* return success */ @@ -110,6 +110,7 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, int status) { struct WD33C93_hostdata *hdata = shost_priv(instance); + a3000_scsiregs *regs = (a3000_scsiregs *)(instance->base); /* disable SCSI interrupts */ unsigned short cntr = CNTR_PDMD; @@ -117,14 +118,14 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, if (!hdata->dma_dir) cntr |= CNTR_DDIR; - DMA(instance)->CNTR = cntr; + regs->CNTR = cntr; mb(); /* make sure CNTR is updated before next IO */ /* flush if we were reading */ if (hdata->dma_dir) { - DMA(instance)->FLUSH = 1; + regs->FLUSH = 1; mb(); /* don't allow prefetch */ - while (!(DMA(instance)->ISTR & ISTR_FE_FLG)) + while (!(regs->ISTR & ISTR_FE_FLG)) barrier(); mb(); /* no IO until FLUSH is done */ } @@ -133,14 +134,14 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, /* I think that this CINT is only necessary if you are * using the terminal count features. HM 7 Mar 1994 */ - DMA(instance)->CINT = 1; + regs->CINT = 1; /* stop DMA */ - DMA(instance)->SP_DMA = 1; + regs->SP_DMA = 1; mb(); /* make sure DMA is stopped before next IO */ /* restore the CONTROL bits (minus the direction flag) */ - DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN; + regs->CNTR = CNTR_PDMD | CNTR_INTEN; mb(); /* make sure CNTR is updated before next IO */ /* copy from a bounce buffer, if necessary */ @@ -163,7 +164,8 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, static int __init a3000_detect(struct scsi_host_template *tpnt) { - wd33c93_regs regs; + wd33c93_regs wdregs; + a3000_scsiregs *regs; struct WD33C93_hostdata *hdata; if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(A3000_SCSI)) @@ -180,18 +182,20 @@ static int __init a3000_detect(struct scsi_host_template *tpnt) a3000_host->base = ZTWO_VADDR(0xDD0000); a3000_host->irq = IRQ_AMIGA_PORTS; - DMA(a3000_host)->DAWR = DAWR_A3000; - regs.SASR = &(DMA(a3000_host)->SASR); - regs.SCMD = &(DMA(a3000_host)->SCMD); + regs = (a3000_scsiregs *)(a3000_host->base); + regs->DAWR = DAWR_A3000; + wdregs.SASR = ®s->SASR; + wdregs.SCMD = ®s->SCMD; hdata = shost_priv(a3000_host); hdata->no_sync = 0xff; hdata->fast = 0; hdata->dma_mode = CTRL_DMA; - wd33c93_init(a3000_host, regs, dma_setup, dma_stop, WD33C93_FS_12_15); + wd33c93_init(a3000_host, wdregs, dma_setup, dma_stop, + WD33C93_FS_12_15); if (request_irq(IRQ_AMIGA_PORTS, a3000_intr, IRQF_SHARED, "A3000 SCSI", a3000_intr)) goto fail_irq; - DMA(a3000_host)->CNTR = CNTR_PDMD | CNTR_INTEN; + regs->CNTR = CNTR_PDMD | CNTR_INTEN; return 1; @@ -239,7 +243,9 @@ static struct scsi_host_template driver_template = { static int a3000_release(struct Scsi_Host *instance) { - DMA(instance)->CNTR = 0; + a3000_scsiregs *regs = (a3000_scsiregs *)(instance->base); + + regs->CNTR = 0; release_mem_region(0xDD0000, 256); free_irq(IRQ_AMIGA_PORTS, a3000_intr); return 1; |