m68k/scsi: a3000 - Kill ugly DMA() macro

Acked-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

diff --git a/drivers/scsi/a3000.c b/drivers/scsi/a3000.c
index bc6eb69..ae9b25a 100644 (file)
--- 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 = &regs->SASR;
+       wdregs.SCMD = &regs->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;