diff options
| -rw-r--r-- | drivers/scsi/a2091.c | 56 |
1 files changed, 29 insertions, 27 deletions
diff --git a/drivers/scsi/a2091.c b/drivers/scsi/a2091.c index 8469c239f9fb..95584059863b 100644 --- a/drivers/scsi/a2091.c +++ b/drivers/scsi/a2091.c @@ -23,7 +23,6 @@ #define DMA(ptr) ((a2091_scsiregs *)((ptr)->base)) -#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata)) static int a2091_release(struct Scsi_Host *instance); @@ -45,39 +44,39 @@ static irqreturn_t a2091_intr(int irq, void *_instance) 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); unsigned short cntr = CNTR_PDMD | CNTR_INTEN; unsigned long addr = virt_to_bus(cmd->SCp.ptr); - struct Scsi_Host *instance = cmd->device->host; /* don't allow DMA if the physical address is bad */ if (addr & A2091_XFER_MASK) { - HDATA(instance)->dma_bounce_len = - (cmd->SCp.this_residual + 511) & ~0x1ff; - HDATA(instance)->dma_bounce_buffer = - kmalloc(HDATA(instance)->dma_bounce_len, GFP_KERNEL); + hdata->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff; + hdata->dma_bounce_buffer = kmalloc(hdata->dma_bounce_len, + GFP_KERNEL); /* can't allocate memory; use PIO */ - if (!HDATA(instance)->dma_bounce_buffer) { - HDATA(instance)->dma_bounce_len = 0; + if (!hdata->dma_bounce_buffer) { + hdata->dma_bounce_len = 0; return 1; } /* get the physical address of the bounce buffer */ - addr = virt_to_bus(HDATA(instance)->dma_bounce_buffer); + addr = virt_to_bus(hdata->dma_bounce_buffer); /* the bounce buffer may not be in the first 16M of physmem */ if (addr & A2091_XFER_MASK) { /* we could use chipmem... maybe later */ - kfree(HDATA(instance)->dma_bounce_buffer); - HDATA(instance)->dma_bounce_buffer = NULL; - HDATA(instance)->dma_bounce_len = 0; + kfree(hdata->dma_bounce_buffer); + hdata->dma_bounce_buffer = NULL; + hdata->dma_bounce_len = 0; return 1; } if (!dir_in) { /* copy to bounce buffer for a write */ - memcpy(HDATA(instance)->dma_bounce_buffer, - cmd->SCp.ptr, cmd->SCp.this_residual); + memcpy(hdata->dma_bounce_buffer, cmd->SCp.ptr, + cmd->SCp.this_residual); } } @@ -86,7 +85,7 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in) cntr |= CNTR_DDIR; /* remember direction */ - HDATA(cmd->device->host)->dma_dir = dir_in; + hdata->dma_dir = dir_in; DMA(cmd->device->host)->CNTR = cntr; @@ -110,17 +109,19 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in) static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, int status) { + struct WD33C93_hostdata *hdata = shost_priv(instance); + /* disable SCSI interrupts */ unsigned short cntr = CNTR_PDMD; - if (!HDATA(instance)->dma_dir) + if (!hdata->dma_dir) cntr |= CNTR_DDIR; /* disable SCSI interrupts */ DMA(instance)->CNTR = cntr; /* flush if we were reading */ - if (HDATA(instance)->dma_dir) { + if (hdata->dma_dir) { DMA(instance)->FLUSH = 1; while (!(DMA(instance)->ISTR & ISTR_FE_FLG)) ; @@ -136,14 +137,13 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN; /* copy from a bounce buffer, if necessary */ - if (status && HDATA(instance)->dma_bounce_buffer) { - if (HDATA(instance)->dma_dir) - memcpy(SCpnt->SCp.ptr, - HDATA(instance)->dma_bounce_buffer, + if (status && hdata->dma_bounce_buffer) { + if (hdata->dma_dir) + memcpy(SCpnt->SCp.ptr, hdata->dma_bounce_buffer, SCpnt->SCp.this_residual); - kfree(HDATA(instance)->dma_bounce_buffer); - HDATA(instance)->dma_bounce_buffer = NULL; - HDATA(instance)->dma_bounce_len = 0; + kfree(hdata->dma_bounce_buffer); + hdata->dma_bounce_buffer = NULL; + hdata->dma_bounce_len = 0; } } @@ -154,6 +154,7 @@ static int __init a2091_detect(struct scsi_host_template *tpnt) unsigned long address; struct zorro_dev *z = NULL; wd33c93_regs regs; + struct WD33C93_hostdata *hdata; int num_a2091 = 0; if (!MACH_IS_AMIGA || called) @@ -180,9 +181,10 @@ static int __init a2091_detect(struct scsi_host_template *tpnt) DMA(instance)->DAWR = DAWR_A2091; regs.SASR = &(DMA(instance)->SASR); regs.SCMD = &(DMA(instance)->SCMD); - HDATA(instance)->no_sync = 0xff; - HDATA(instance)->fast = 0; - HDATA(instance)->dma_mode = CTRL_DMA; + 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_FS_8_10); if (request_irq(IRQ_AMIGA_PORTS, a2091_intr, IRQF_SHARED, |