diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/scsi/gvp11.c | 105 |
1 files changed, 56 insertions, 49 deletions
diff --git a/drivers/scsi/gvp11.c b/drivers/scsi/gvp11.c index 4507a16ee1c6..2ce26eb7a1ec 100644 --- a/drivers/scsi/gvp11.c +++ b/drivers/scsi/gvp11.c @@ -18,11 +18,16 @@ #define CHECK_WD33C93 +struct gvp11_hostdata { + struct WD33C93_hostdata wh; + struct gvp11_scsiregs *regs; +}; + static irqreturn_t gvp11_intr(int irq, void *data) { struct Scsi_Host *instance = data; - struct gvp11_scsiregs *regs = (struct gvp11_scsiregs *)(instance->base); - unsigned int status = regs->CNTR; + struct gvp11_hostdata *hdata = shost_priv(instance); + unsigned int status = hdata->regs->CNTR; unsigned long flags; if (!(status & GVP11_DMAC_INT_PENDING)) @@ -44,65 +49,66 @@ void gvp11_setup(char *str, int *ints) 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); - struct gvp11_scsiregs *regs = (struct gvp11_scsiregs *)(instance->base); + struct gvp11_hostdata *hdata = shost_priv(instance); + struct WD33C93_hostdata *wh = &hdata->wh; + struct gvp11_scsiregs *regs = hdata->regs; unsigned short cntr = GVP11_DMAC_INT_ENABLE; unsigned long addr = virt_to_bus(cmd->SCp.ptr); int bank_mask; static int scsi_alloc_out_of_range = 0; /* use bounce buffer if the physical address is bad */ - if (addr & hdata->dma_xfer_mask) { - hdata->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff; + if (addr & wh->dma_xfer_mask) { + wh->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff; if (!scsi_alloc_out_of_range) { - hdata->dma_bounce_buffer = - kmalloc(hdata->dma_bounce_len, GFP_KERNEL); - hdata->dma_buffer_pool = BUF_SCSI_ALLOCED; + wh->dma_bounce_buffer = + kmalloc(wh->dma_bounce_len, GFP_KERNEL); + wh->dma_buffer_pool = BUF_SCSI_ALLOCED; } if (scsi_alloc_out_of_range || - !hdata->dma_bounce_buffer) { - hdata->dma_bounce_buffer = - amiga_chip_alloc(hdata->dma_bounce_len, + !wh->dma_bounce_buffer) { + wh->dma_bounce_buffer = + amiga_chip_alloc(wh->dma_bounce_len, "GVP II SCSI Bounce Buffer"); - if (!hdata->dma_bounce_buffer) { - hdata->dma_bounce_len = 0; + if (!wh->dma_bounce_buffer) { + wh->dma_bounce_len = 0; return 1; } - hdata->dma_buffer_pool = BUF_CHIP_ALLOCED; + wh->dma_buffer_pool = BUF_CHIP_ALLOCED; } /* check if the address of the bounce buffer is OK */ - addr = virt_to_bus(hdata->dma_bounce_buffer); + addr = virt_to_bus(wh->dma_bounce_buffer); - if (addr & hdata->dma_xfer_mask) { + if (addr & wh->dma_xfer_mask) { /* fall back to Chip RAM if address out of range */ - if (hdata->dma_buffer_pool == BUF_SCSI_ALLOCED) { - kfree(hdata->dma_bounce_buffer); + if (wh->dma_buffer_pool == BUF_SCSI_ALLOCED) { + kfree(wh->dma_bounce_buffer); scsi_alloc_out_of_range = 1; } else { - amiga_chip_free(hdata->dma_bounce_buffer); + amiga_chip_free(wh->dma_bounce_buffer); } - hdata->dma_bounce_buffer = - amiga_chip_alloc(hdata->dma_bounce_len, + wh->dma_bounce_buffer = + amiga_chip_alloc(wh->dma_bounce_len, "GVP II SCSI Bounce Buffer"); - if (!hdata->dma_bounce_buffer) { - hdata->dma_bounce_len = 0; + if (!wh->dma_bounce_buffer) { + wh->dma_bounce_len = 0; return 1; } - addr = virt_to_bus(hdata->dma_bounce_buffer); - hdata->dma_buffer_pool = BUF_CHIP_ALLOCED; + addr = virt_to_bus(wh->dma_bounce_buffer); + wh->dma_buffer_pool = BUF_CHIP_ALLOCED; } if (!dir_in) { /* copy to bounce buffer for a write */ - memcpy(hdata->dma_bounce_buffer, cmd->SCp.ptr, + memcpy(wh->dma_bounce_buffer, cmd->SCp.ptr, cmd->SCp.this_residual); } } @@ -111,7 +117,7 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in) if (!dir_in) cntr |= GVP11_DMAC_DIR_WRITE; - hdata->dma_dir = dir_in; + wh->dma_dir = dir_in; regs->CNTR = cntr; /* setup DMA *physical* address */ @@ -125,7 +131,7 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in) cache_push(addr, cmd->SCp.this_residual); } - bank_mask = (~hdata->dma_xfer_mask >> 18) & 0x01c0; + bank_mask = (~wh->dma_xfer_mask >> 18) & 0x01c0; if (bank_mask) regs->BANK = bank_mask & (addr >> 18); @@ -139,8 +145,9 @@ 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 gvp11_scsiregs *regs = (struct gvp11_scsiregs *)(instance->base); - struct WD33C93_hostdata *hdata = shost_priv(instance); + struct gvp11_hostdata *hdata = shost_priv(instance); + struct WD33C93_hostdata *wh = &hdata->wh; + struct gvp11_scsiregs *regs = hdata->regs; /* stop DMA */ regs->SP_DMA = 1; @@ -148,18 +155,18 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, regs->CNTR = GVP11_DMAC_INT_ENABLE; /* copy from a bounce buffer, if necessary */ - if (status && hdata->dma_bounce_buffer) { - if (hdata->dma_dir && SCpnt) - memcpy(SCpnt->SCp.ptr, hdata->dma_bounce_buffer, + if (status && wh->dma_bounce_buffer) { + if (wh->dma_dir && SCpnt) + memcpy(SCpnt->SCp.ptr, wh->dma_bounce_buffer, SCpnt->SCp.this_residual); - if (hdata->dma_buffer_pool == BUF_SCSI_ALLOCED) - kfree(hdata->dma_bounce_buffer); + if (wh->dma_buffer_pool == BUF_SCSI_ALLOCED) + kfree(wh->dma_bounce_buffer); else - amiga_chip_free(hdata->dma_bounce_buffer); + amiga_chip_free(wh->dma_bounce_buffer); - hdata->dma_bounce_buffer = NULL; - hdata->dma_bounce_len = 0; + wh->dma_bounce_buffer = NULL; + wh->dma_bounce_len = 0; } } @@ -284,7 +291,7 @@ static int __devinit gvp11_probe(struct zorro_dev *z, int error; unsigned int epc; unsigned int default_dma_xfer_mask; - struct WD33C93_hostdata *hdata; + struct gvp11_hostdata *hdata; struct gvp11_scsiregs *regs; wd33c93_regs wdregs; @@ -309,13 +316,12 @@ static int __devinit gvp11_probe(struct zorro_dev *z, goto fail_check_or_alloc; instance = scsi_host_alloc(&gvp11_scsi_template, - sizeof(struct WD33C93_hostdata)); + sizeof(struct gvp11_hostdata)); if (!instance) { error = -ENOMEM; goto fail_check_or_alloc; } - instance->base = (unsigned long)regs; instance->irq = IRQ_AMIGA_PORTS; instance->unique_id = z->slotaddr; @@ -332,13 +338,14 @@ static int __devinit gvp11_probe(struct zorro_dev *z, hdata = shost_priv(instance); if (gvp11_xfer_mask) - hdata->dma_xfer_mask = gvp11_xfer_mask; + hdata->wh.dma_xfer_mask = gvp11_xfer_mask; else - hdata->dma_xfer_mask = default_dma_xfer_mask; + hdata->wh.dma_xfer_mask = default_dma_xfer_mask; - hdata->no_sync = 0xff; - hdata->fast = 0; - hdata->dma_mode = CTRL_DMA; + hdata->wh.no_sync = 0xff; + hdata->wh.fast = 0; + hdata->wh.dma_mode = CTRL_DMA; + hdata->regs = regs; /* * Check for 14MHz SCSI clock @@ -375,9 +382,9 @@ fail_check_or_alloc: static void __devexit gvp11_remove(struct zorro_dev *z) { struct Scsi_Host *instance = zorro_get_drvdata(z); - struct gvp11_scsiregs *regs = (struct gvp11_scsiregs *)(instance->base); + struct gvp11_hostdata *hdata = shost_priv(instance); - regs->CNTR = 0; + hdata->regs->CNTR = 0; scsi_remove_host(instance); free_irq(IRQ_AMIGA_PORTS, instance); scsi_host_put(instance); |