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@@ -19,185 +19,186 @@
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#include "wd33c93.h"
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#include "a2091.h"
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-#include<linux/stat.h>
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+#include <linux/stat.h>
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-#define DMA(ptr) ((a2091_scsiregs *)((ptr)->base))
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-#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata))
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+
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+#define DMA(ptr) ((a2091_scsiregs *)((ptr)->base))
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+#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata))
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static int a2091_release(struct Scsi_Host *instance);
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-static irqreturn_t a2091_intr (int irq, void *_instance)
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+static irqreturn_t a2091_intr(int irq, void *_instance)
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{
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- unsigned long flags;
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- unsigned int status;
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- struct Scsi_Host *instance = (struct Scsi_Host *)_instance;
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-
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- status = DMA(instance)->ISTR;
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- if (!(status & (ISTR_INT_F|ISTR_INT_P)) || !(status & ISTR_INTS))
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- return IRQ_NONE;
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-
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- spin_lock_irqsave(instance->host_lock, flags);
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- wd33c93_intr(instance);
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- spin_unlock_irqrestore(instance->host_lock, flags);
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- return IRQ_HANDLED;
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+ unsigned long flags;
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+ unsigned int status;
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+ struct Scsi_Host *instance = (struct Scsi_Host *)_instance;
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+
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+ status = DMA(instance)->ISTR;
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+ if (!(status & (ISTR_INT_F | ISTR_INT_P)) || !(status & ISTR_INTS))
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+ return IRQ_NONE;
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+
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+ spin_lock_irqsave(instance->host_lock, flags);
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+ wd33c93_intr(instance);
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+ spin_unlock_irqrestore(instance->host_lock, flags);
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+ return IRQ_HANDLED;
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}
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static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
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{
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- unsigned short cntr = CNTR_PDMD | CNTR_INTEN;
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- unsigned long addr = virt_to_bus(cmd->SCp.ptr);
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- struct Scsi_Host *instance = cmd->device->host;
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-
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- /* don't allow DMA if the physical address is bad */
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- if (addr & A2091_XFER_MASK)
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- {
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- HDATA(instance)->dma_bounce_len = (cmd->SCp.this_residual + 511)
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- & ~0x1ff;
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- HDATA(instance)->dma_bounce_buffer =
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- kmalloc (HDATA(instance)->dma_bounce_len, GFP_KERNEL);
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-
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- /* can't allocate memory; use PIO */
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- if (!HDATA(instance)->dma_bounce_buffer) {
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- HDATA(instance)->dma_bounce_len = 0;
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- return 1;
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- }
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-
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- /* get the physical address of the bounce buffer */
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- addr = virt_to_bus(HDATA(instance)->dma_bounce_buffer);
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+ unsigned short cntr = CNTR_PDMD | CNTR_INTEN;
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+ unsigned long addr = virt_to_bus(cmd->SCp.ptr);
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+ struct Scsi_Host *instance = cmd->device->host;
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- /* the bounce buffer may not be in the first 16M of physmem */
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+ /* don't allow DMA if the physical address is bad */
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if (addr & A2091_XFER_MASK) {
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- /* we could use chipmem... maybe later */
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- kfree (HDATA(instance)->dma_bounce_buffer);
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- HDATA(instance)->dma_bounce_buffer = NULL;
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- HDATA(instance)->dma_bounce_len = 0;
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- return 1;
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- }
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-
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- if (!dir_in) {
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- /* copy to bounce buffer for a write */
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- memcpy (HDATA(instance)->dma_bounce_buffer,
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- cmd->SCp.ptr, cmd->SCp.this_residual);
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+ HDATA(instance)->dma_bounce_len =
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+ (cmd->SCp.this_residual + 511) & ~0x1ff;
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+ HDATA(instance)->dma_bounce_buffer =
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+ kmalloc(HDATA(instance)->dma_bounce_len, GFP_KERNEL);
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+
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+ /* can't allocate memory; use PIO */
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+ if (!HDATA(instance)->dma_bounce_buffer) {
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+ HDATA(instance)->dma_bounce_len = 0;
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+ return 1;
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+ }
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+
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+ /* get the physical address of the bounce buffer */
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+ addr = virt_to_bus(HDATA(instance)->dma_bounce_buffer);
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+
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+ /* the bounce buffer may not be in the first 16M of physmem */
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+ if (addr & A2091_XFER_MASK) {
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+ /* we could use chipmem... maybe later */
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+ kfree(HDATA(instance)->dma_bounce_buffer);
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+ HDATA(instance)->dma_bounce_buffer = NULL;
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+ HDATA(instance)->dma_bounce_len = 0;
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+ return 1;
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+ }
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+
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+ if (!dir_in) {
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+ /* copy to bounce buffer for a write */
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+ memcpy(HDATA(instance)->dma_bounce_buffer,
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+ cmd->SCp.ptr, cmd->SCp.this_residual);
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+ }
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}
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- }
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- /* setup dma direction */
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- if (!dir_in)
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- cntr |= CNTR_DDIR;
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+ /* setup dma direction */
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+ if (!dir_in)
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+ cntr |= CNTR_DDIR;
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- /* remember direction */
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- HDATA(cmd->device->host)->dma_dir = dir_in;
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+ /* remember direction */
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+ HDATA(cmd->device->host)->dma_dir = dir_in;
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- DMA(cmd->device->host)->CNTR = cntr;
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+ DMA(cmd->device->host)->CNTR = cntr;
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- /* setup DMA *physical* address */
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- DMA(cmd->device->host)->ACR = addr;
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+ /* setup DMA *physical* address */
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+ DMA(cmd->device->host)->ACR = addr;
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- if (dir_in){
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- /* invalidate any cache */
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- cache_clear (addr, cmd->SCp.this_residual);
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- }else{
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- /* push any dirty cache */
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- cache_push (addr, cmd->SCp.this_residual);
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- }
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- /* start DMA */
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- DMA(cmd->device->host)->ST_DMA = 1;
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+ if (dir_in) {
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+ /* invalidate any cache */
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+ cache_clear(addr, cmd->SCp.this_residual);
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+ } else {
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+ /* push any dirty cache */
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+ cache_push(addr, cmd->SCp.this_residual);
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+ }
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+ /* start DMA */
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+ DMA(cmd->device->host)->ST_DMA = 1;
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- /* return success */
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- return 0;
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+ /* return success */
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+ return 0;
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}
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static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
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- int status)
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+ int status)
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{
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- /* disable SCSI interrupts */
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- unsigned short cntr = CNTR_PDMD;
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-
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- if (!HDATA(instance)->dma_dir)
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- cntr |= CNTR_DDIR;
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-
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- /* disable SCSI interrupts */
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- DMA(instance)->CNTR = cntr;
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-
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- /* flush if we were reading */
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- if (HDATA(instance)->dma_dir) {
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- DMA(instance)->FLUSH = 1;
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- while (!(DMA(instance)->ISTR & ISTR_FE_FLG))
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- ;
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- }
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-
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- /* clear a possible interrupt */
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- DMA(instance)->CINT = 1;
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-
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- /* stop DMA */
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- DMA(instance)->SP_DMA = 1;
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-
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- /* restore the CONTROL bits (minus the direction flag) */
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- DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
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-
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- /* copy from a bounce buffer, if necessary */
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- if (status && HDATA(instance)->dma_bounce_buffer) {
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- if( HDATA(instance)->dma_dir )
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- memcpy (SCpnt->SCp.ptr,
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- HDATA(instance)->dma_bounce_buffer,
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- SCpnt->SCp.this_residual);
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- kfree (HDATA(instance)->dma_bounce_buffer);
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- HDATA(instance)->dma_bounce_buffer = NULL;
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- HDATA(instance)->dma_bounce_len = 0;
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- }
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+ /* disable SCSI interrupts */
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+ unsigned short cntr = CNTR_PDMD;
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+
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+ if (!HDATA(instance)->dma_dir)
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+ cntr |= CNTR_DDIR;
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+
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+ /* disable SCSI interrupts */
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+ DMA(instance)->CNTR = cntr;
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+
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+ /* flush if we were reading */
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+ if (HDATA(instance)->dma_dir) {
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+ DMA(instance)->FLUSH = 1;
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+ while (!(DMA(instance)->ISTR & ISTR_FE_FLG))
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+ ;
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+ }
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+
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+ /* clear a possible interrupt */
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+ DMA(instance)->CINT = 1;
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+
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+ /* stop DMA */
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+ DMA(instance)->SP_DMA = 1;
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+
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+ /* restore the CONTROL bits (minus the direction flag) */
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+ DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
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+
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+ /* copy from a bounce buffer, if necessary */
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+ if (status && HDATA(instance)->dma_bounce_buffer) {
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+ if (HDATA(instance)->dma_dir)
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+ memcpy(SCpnt->SCp.ptr,
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+ HDATA(instance)->dma_bounce_buffer,
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+ SCpnt->SCp.this_residual);
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+ kfree(HDATA(instance)->dma_bounce_buffer);
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+ HDATA(instance)->dma_bounce_buffer = NULL;
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+ HDATA(instance)->dma_bounce_len = 0;
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+ }
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}
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static int __init a2091_detect(struct scsi_host_template *tpnt)
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{
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- static unsigned char called = 0;
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- struct Scsi_Host *instance;
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- unsigned long address;
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- struct zorro_dev *z = NULL;
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- wd33c93_regs regs;
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- int num_a2091 = 0;
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-
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- if (!MACH_IS_AMIGA || called)
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- return 0;
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- called = 1;
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-
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- tpnt->proc_name = "A2091";
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- tpnt->proc_info = &wd33c93_proc_info;
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-
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- while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
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- if (z->id != ZORRO_PROD_CBM_A590_A2091_1 &&
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- z->id != ZORRO_PROD_CBM_A590_A2091_2)
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- continue;
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- address = z->resource.start;
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- if (!request_mem_region(address, 256, "wd33c93"))
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- continue;
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-
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- instance = scsi_register (tpnt, sizeof (struct WD33C93_hostdata));
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- if (instance == NULL)
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- goto release;
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- instance->base = ZTWO_VADDR(address);
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- instance->irq = IRQ_AMIGA_PORTS;
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- instance->unique_id = z->slotaddr;
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- DMA(instance)->DAWR = DAWR_A2091;
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- regs.SASR = &(DMA(instance)->SASR);
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- regs.SCMD = &(DMA(instance)->SCMD);
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- HDATA(instance)->no_sync = 0xff;
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- HDATA(instance)->fast = 0;
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- HDATA(instance)->dma_mode = CTRL_DMA;
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- wd33c93_init(instance, regs, dma_setup, dma_stop, WD33C93_FS_8_10);
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- if (request_irq(IRQ_AMIGA_PORTS, a2091_intr, IRQF_SHARED, "A2091 SCSI",
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- instance))
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- goto unregister;
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- DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
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- num_a2091++;
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- continue;
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+ static unsigned char called = 0;
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+ struct Scsi_Host *instance;
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+ unsigned long address;
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+ struct zorro_dev *z = NULL;
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+ wd33c93_regs regs;
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+ int num_a2091 = 0;
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+
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+ if (!MACH_IS_AMIGA || called)
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+ return 0;
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+ called = 1;
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+
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+ tpnt->proc_name = "A2091";
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+ tpnt->proc_info = &wd33c93_proc_info;
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+
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+ while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
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+ if (z->id != ZORRO_PROD_CBM_A590_A2091_1 &&
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+ z->id != ZORRO_PROD_CBM_A590_A2091_2)
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+ continue;
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+ address = z->resource.start;
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+ if (!request_mem_region(address, 256, "wd33c93"))
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+ continue;
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+
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+ instance = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
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+ if (instance == NULL)
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+ goto release;
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+ instance->base = ZTWO_VADDR(address);
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+ instance->irq = IRQ_AMIGA_PORTS;
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+ instance->unique_id = z->slotaddr;
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+ DMA(instance)->DAWR = DAWR_A2091;
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+ regs.SASR = &(DMA(instance)->SASR);
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+ regs.SCMD = &(DMA(instance)->SCMD);
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+ HDATA(instance)->no_sync = 0xff;
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+ HDATA(instance)->fast = 0;
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+ HDATA(instance)->dma_mode = CTRL_DMA;
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+ wd33c93_init(instance, regs, dma_setup, dma_stop,
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+ WD33C93_FS_8_10);
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+ if (request_irq(IRQ_AMIGA_PORTS, a2091_intr, IRQF_SHARED,
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+ "A2091 SCSI", instance))
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+ goto unregister;
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+ DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
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+ num_a2091++;
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+ continue;
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unregister:
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- scsi_unregister(instance);
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+ scsi_unregister(instance);
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release:
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- release_mem_region(address, 256);
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- }
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+ release_mem_region(address, 256);
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+ }
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- return num_a2091;
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+ return num_a2091;
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}
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static int a2091_bus_reset(struct scsi_cmnd *cmd)
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