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Commit aa43f111 authored by Stephen M. Cameron's avatar Stephen M. Cameron Committed by Jens Axboe
Browse files

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



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

Signed-off-by: default avatarStephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 29009a03

drivers/block/cciss.c

+0 −163
Original line number Diff line number Diff line
@@ -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

 */