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path: root/drivers/scsi/mvme147.c
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Diffstat (limited to 'drivers/scsi/mvme147.c')
-rw-r--r--drivers/scsi/mvme147.c169
1 files changed, 86 insertions, 83 deletions
diff --git a/drivers/scsi/mvme147.c b/drivers/scsi/mvme147.c
index d722235111a..716d1785cda 100644
--- a/drivers/scsi/mvme147.c
+++ b/drivers/scsi/mvme147.c
@@ -13,112 +13,116 @@
#include "wd33c93.h"
#include "mvme147.h"
-#include<linux/stat.h>
+#include <linux/stat.h>
-#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata))
static struct Scsi_Host *mvme147_host = NULL;
-static irqreturn_t mvme147_intr (int irq, void *dummy)
+static irqreturn_t mvme147_intr(int irq, void *dummy)
{
- if (irq == MVME147_IRQ_SCSI_PORT)
- wd33c93_intr (mvme147_host);
- else
- m147_pcc->dma_intr = 0x89; /* Ack and enable ints */
- return IRQ_HANDLED;
+ if (irq == MVME147_IRQ_SCSI_PORT)
+ wd33c93_intr(mvme147_host);
+ else
+ m147_pcc->dma_intr = 0x89; /* Ack and enable ints */
+ return IRQ_HANDLED;
}
static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
{
- unsigned char flags = 0x01;
- unsigned long addr = virt_to_bus(cmd->SCp.ptr);
-
- /* setup dma direction */
- if (!dir_in)
- flags |= 0x04;
-
- /* remember direction */
- HDATA(mvme147_host)->dma_dir = dir_in;
-
- if (dir_in)
- /* invalidate any cache */
- cache_clear (addr, cmd->SCp.this_residual);
- else
- /* push any dirty cache */
- cache_push (addr, cmd->SCp.this_residual);
-
- /* start DMA */
- m147_pcc->dma_bcr = cmd->SCp.this_residual | (1<<24);
- m147_pcc->dma_dadr = addr;
- m147_pcc->dma_cntrl = flags;
-
- /* return success */
- return 0;
+ struct WD33C93_hostdata *hdata = shost_priv(mvme147_host);
+ unsigned char flags = 0x01;
+ unsigned long addr = virt_to_bus(cmd->SCp.ptr);
+
+ /* setup dma direction */
+ if (!dir_in)
+ flags |= 0x04;
+
+ /* remember direction */
+ hdata->dma_dir = dir_in;
+
+ if (dir_in) {
+ /* invalidate any cache */
+ cache_clear(addr, cmd->SCp.this_residual);
+ } else {
+ /* push any dirty cache */
+ cache_push(addr, cmd->SCp.this_residual);
+ }
+
+ /* start DMA */
+ m147_pcc->dma_bcr = cmd->SCp.this_residual | (1 << 24);
+ m147_pcc->dma_dadr = addr;
+ m147_pcc->dma_cntrl = flags;
+
+ /* return success */
+ return 0;
}
static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
- int status)
+ int status)
{
- m147_pcc->dma_cntrl = 0;
+ m147_pcc->dma_cntrl = 0;
}
int mvme147_detect(struct scsi_host_template *tpnt)
{
- static unsigned char called = 0;
- wd33c93_regs regs;
-
- if (!MACH_IS_MVME147 || called)
- return 0;
- called++;
-
- tpnt->proc_name = "MVME147";
- tpnt->proc_info = &wd33c93_proc_info;
-
- mvme147_host = scsi_register (tpnt, sizeof(struct WD33C93_hostdata));
- if (!mvme147_host)
- goto err_out;
-
- mvme147_host->base = 0xfffe4000;
- mvme147_host->irq = MVME147_IRQ_SCSI_PORT;
- regs.SASR = (volatile unsigned char *)0xfffe4000;
- regs.SCMD = (volatile unsigned char *)0xfffe4001;
- HDATA(mvme147_host)->no_sync = 0xff;
- HDATA(mvme147_host)->fast = 0;
- HDATA(mvme147_host)->dma_mode = CTRL_DMA;
- wd33c93_init(mvme147_host, regs, dma_setup, dma_stop, WD33C93_FS_8_10);
-
- if (request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0, "MVME147 SCSI PORT", mvme147_intr))
- goto err_unregister;
- if (request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0, "MVME147 SCSI DMA", mvme147_intr))
- goto err_free_irq;
+ static unsigned char called = 0;
+ wd33c93_regs regs;
+ struct WD33C93_hostdata *hdata;
+
+ if (!MACH_IS_MVME147 || called)
+ return 0;
+ called++;
+
+ tpnt->proc_name = "MVME147";
+ tpnt->proc_info = &wd33c93_proc_info;
+
+ mvme147_host = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
+ if (!mvme147_host)
+ goto err_out;
+
+ mvme147_host->base = 0xfffe4000;
+ mvme147_host->irq = MVME147_IRQ_SCSI_PORT;
+ regs.SASR = (volatile unsigned char *)0xfffe4000;
+ regs.SCMD = (volatile unsigned char *)0xfffe4001;
+ hdata = shost_priv(mvme147_host);
+ hdata->no_sync = 0xff;
+ hdata->fast = 0;
+ hdata->dma_mode = CTRL_DMA;
+ wd33c93_init(mvme147_host, regs, dma_setup, dma_stop, WD33C93_FS_8_10);
+
+ if (request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0,
+ "MVME147 SCSI PORT", mvme147_intr))
+ goto err_unregister;
+ if (request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0,
+ "MVME147 SCSI DMA", mvme147_intr))
+ goto err_free_irq;
#if 0 /* Disabled; causes problems booting */
- m147_pcc->scsi_interrupt = 0x10; /* Assert SCSI bus reset */
- udelay(100);
- m147_pcc->scsi_interrupt = 0x00; /* Negate SCSI bus reset */
- udelay(2000);
- m147_pcc->scsi_interrupt = 0x40; /* Clear bus reset interrupt */
+ m147_pcc->scsi_interrupt = 0x10; /* Assert SCSI bus reset */
+ udelay(100);
+ m147_pcc->scsi_interrupt = 0x00; /* Negate SCSI bus reset */
+ udelay(2000);
+ m147_pcc->scsi_interrupt = 0x40; /* Clear bus reset interrupt */
#endif
- m147_pcc->scsi_interrupt = 0x09; /* Enable interrupt */
+ m147_pcc->scsi_interrupt = 0x09; /* Enable interrupt */
- m147_pcc->dma_cntrl = 0x00; /* ensure DMA is stopped */
- m147_pcc->dma_intr = 0x89; /* Ack and enable ints */
+ m147_pcc->dma_cntrl = 0x00; /* ensure DMA is stopped */
+ m147_pcc->dma_intr = 0x89; /* Ack and enable ints */
- return 1;
+ return 1;
- err_free_irq:
- free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
- err_unregister:
- wd33c93_release();
- scsi_unregister(mvme147_host);
- err_out:
- return 0;
+err_free_irq:
+ free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
+err_unregister:
+ scsi_unregister(mvme147_host);
+err_out:
+ return 0;
}
static int mvme147_bus_reset(struct scsi_cmnd *cmd)
{
/* FIXME perform bus-specific reset */
- /* FIXME 2: kill this function, and let midlayer fallback to
+ /* FIXME 2: kill this function, and let midlayer fallback to
the same result, calling wd33c93_host_reset() */
spin_lock_irq(cmd->device->host->host_lock);
@@ -154,10 +158,9 @@ static struct scsi_host_template driver_template = {
int mvme147_release(struct Scsi_Host *instance)
{
#ifdef MODULE
- /* XXX Make sure DMA is stopped! */
- wd33c93_release();
- free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
- free_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr);
+ /* XXX Make sure DMA is stopped! */
+ free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
+ free_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr);
#endif
- return 1;
+ return 1;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-22 22:07:40 +0000