mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
![James Bottomley](/assets/img/avatar_default.png)
The three drivers: a2091, gvp11 and mvme147 have erroneous references to a3000_host. Fix these to be references to the proper host variable. Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
163 lines
4.1 KiB
C
163 lines
4.1 KiB
C
#include <linux/types.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <asm/page.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/mvme147hw.h>
|
|
#include <asm/irq.h>
|
|
|
|
#include "scsi.h"
|
|
#include <scsi/scsi_host.h>
|
|
#include "wd33c93.h"
|
|
#include "mvme147.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)
|
|
{
|
|
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;
|
|
}
|
|
|
|
static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
|
|
int status)
|
|
{
|
|
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;
|
|
#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 */
|
|
#endif
|
|
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 */
|
|
|
|
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;
|
|
}
|
|
|
|
static int mvme147_bus_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
/* FIXME perform bus-specific reset */
|
|
|
|
/* 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);
|
|
wd33c93_host_reset(cmd);
|
|
spin_unlock_irq(cmd->device->host->host_lock);
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
#define HOSTS_C
|
|
|
|
#include "mvme147.h"
|
|
|
|
static struct scsi_host_template driver_template = {
|
|
.proc_name = "MVME147",
|
|
.name = "MVME147 built-in SCSI",
|
|
.detect = mvme147_detect,
|
|
.release = mvme147_release,
|
|
.queuecommand = wd33c93_queuecommand,
|
|
.eh_abort_handler = wd33c93_abort,
|
|
.eh_bus_reset_handler = mvme147_bus_reset,
|
|
.eh_host_reset_handler = wd33c93_host_reset,
|
|
.can_queue = CAN_QUEUE,
|
|
.this_id = 7,
|
|
.sg_tablesize = SG_ALL,
|
|
.cmd_per_lun = CMD_PER_LUN,
|
|
.use_clustering = ENABLE_CLUSTERING
|
|
};
|
|
|
|
|
|
#include "scsi_module.c"
|
|
|
|
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);
|
|
#endif
|
|
return 1;
|
|
}
|