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cciss: remove sendcmd() as it is no longer used.

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cciss: remove sendcmd() as it is no longer used.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Stephen M. Cameron 2009-11-12 12:49:40 -06:00 committed by Jens Axboe
parent 29009a036f
commit aa43f11147
1 changed files with 0 additions and 163 deletions
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163
drivers/block/cciss.c
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@ -190,8 +190,6 @@ static void cciss_geometry_inquiry(int ctlr, int logvol,
static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *,
__u32);
static void start_io(ctlr_info_t *h);
static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size,
__u8 page_code, unsigned char *scsi3addr, int cmd_type);
static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
__u8 page_code, unsigned char scsi3addr[],
int cmd_type);
@ -2807,167 +2805,6 @@ static int cciss_revalidate(struct gendisk *disk)
return 0;
}
/*
* Wait polling for a command to complete.
* The memory mapped FIFO is polled for the completion.
* Used only at init time, interrupts from the HBA are disabled.
*/
static unsigned long pollcomplete(int ctlr)
{
unsigned long done;
int i;
/* Wait (up to 20 seconds) for a command to complete */
for (i = 20 * HZ; i > 0; i--) {
done = hba[ctlr]->access.command_completed(hba[ctlr]);
if (done == FIFO_EMPTY)
schedule_timeout_uninterruptible(1);
else
return done;
}
/* Invalid address to tell caller we ran out of time */
return 1;
}
/* Send command c to controller h and poll for it to complete.
* Turns interrupts off on the board. Used at driver init time
* and during SCSI error recovery.
*/
static int sendcmd_core(ctlr_info_t *h, CommandList_struct *c)
{
int i;
unsigned long complete;
int status = IO_ERROR;
u64bit buff_dma_handle;
resend_cmd1:
/* Disable interrupt on the board. */
h->access.set_intr_mask(h, CCISS_INTR_OFF);
/* Make sure there is room in the command FIFO */
/* Actually it should be completely empty at this time */
/* unless we are in here doing error handling for the scsi */
/* tape side of the driver. */
for (i = 200000; i > 0; i--) {
/* if fifo isn't full go */
if (!(h->access.fifo_full(h)))
break;
udelay(10);
printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
" waiting!\n", h->ctlr);
}
h->access.submit_command(h, c); /* Send the cmd */
do {
complete = pollcomplete(h->ctlr);
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss: command completed\n");
#endif /* CCISS_DEBUG */
if (complete == 1) {
printk(KERN_WARNING
"cciss cciss%d: SendCmd Timeout out, "
"No command list address returned!\n", h->ctlr);
status = IO_ERROR;
break;
}
/* Make sure it's the command we're expecting. */
if ((complete & ~CISS_ERROR_BIT) != c->busaddr) {
printk(KERN_WARNING "cciss%d: Unexpected command "
"completion.\n", h->ctlr);
continue;
}
/* It is our command. If no error, we're done. */
if (!(complete & CISS_ERROR_BIT)) {
status = IO_OK;
break;
}
/* There is an error... */
/* if data overrun or underun on Report command ignore it */
if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
(c->Request.CDB[0] == CISS_REPORT_PHYS) ||
(c->Request.CDB[0] == CISS_INQUIRY)) &&
((c->err_info->CommandStatus == CMD_DATA_OVERRUN) ||
(c->err_info->CommandStatus == CMD_DATA_UNDERRUN))) {
complete = c->busaddr;
status = IO_OK;
break;
}
if (c->err_info->CommandStatus == CMD_UNSOLICITED_ABORT) {
printk(KERN_WARNING "cciss%d: unsolicited abort %p\n",
h->ctlr, c);
if (c->retry_count < MAX_CMD_RETRIES) {
printk(KERN_WARNING "cciss%d: retrying %p\n",
h->ctlr, c);
c->retry_count++;
/* erase the old error information */
memset(c->err_info, 0, sizeof(c->err_info));
goto resend_cmd1;
}
printk(KERN_WARNING "cciss%d: retried %p too many "
"times\n", h->ctlr, c);
status = IO_ERROR;
break;
}
if (c->err_info->CommandStatus == CMD_UNABORTABLE) {
printk(KERN_WARNING "cciss%d: command could not be "
"aborted.\n", h->ctlr);
status = IO_ERROR;
break;
}
if (c->err_info->CommandStatus == CMD_TARGET_STATUS) {
status = check_target_status(h, c);
break;
}
printk(KERN_WARNING "cciss%d: sendcmd error\n", h->ctlr);
printk(KERN_WARNING "cmd = 0x%02x, CommandStatus = 0x%02x\n",
c->Request.CDB[0], c->err_info->CommandStatus);
status = IO_ERROR;
break;
} while (1);
/* unlock the data buffer from DMA */
buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val,
c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
return status;
}
/*
* Send a command to the controller, and wait for it to complete.
* Used at init time, and during SCSI error recovery.
*/
static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size,
__u8 page_code, unsigned char *scsi3addr, int cmd_type)
{
CommandList_struct *c;
int status;
c = cmd_alloc(hba[ctlr], 1);
if (!c) {
printk(KERN_WARNING "cciss: unable to get memory");
return IO_ERROR;
}
status = fill_cmd(c, cmd, ctlr, buff, size, page_code,
scsi3addr, cmd_type);
if (status == IO_OK)
status = sendcmd_core(hba[ctlr], c);
cmd_free(hba[ctlr], c, 1);
return status;
}
/*
* Map (physical) PCI mem into (virtual) kernel space
*/