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cciss: factor out cciss_wait_for_board_ready() 

cciss: factor out cciss_wait_for_board_ready()

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Stephen M. Cameron 2010-07-19 13:45:15 -05:00 committed by Jens Axboe
parent d474830da6
commit e99ba13627
2 changed files with 32 additions and 15 deletions
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32
drivers/block/cciss.c
View File

@ -4026,9 +4026,23 @@ static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev,
return -ENODEV;
}
static int __devinit cciss_wait_for_board_ready(ctlr_info_t *h)
{
int i;
u32 scratchpad;
for (i = 0; i < CCISS_BOARD_READY_ITERATIONS; i++) {
scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
if (scratchpad == CCISS_FIRMWARE_READY)
return 0;
msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS);
}
dev_warn(&h->pdev->dev, "board not ready, timed out.\n");
return -ENODEV;
}
static int __devinit cciss_pci_init(ctlr_info_t *c)
{
__u32 scratchpad = 0;
__u64 cfg_offset;
__u32 cfg_base_addr;
__u64 cfg_base_addr_index;
@ -4073,21 +4087,9 @@ static int __devinit cciss_pci_init(ctlr_info_t *c)
if (err)
goto err_out_free_res;
c->vaddr = remap_pci_mem(c->paddr, 0x250);
/* Wait for the board to become ready. (PCI hotplug needs this.)
* We poll for up to 120 secs, once per 100ms. */
for (i = 0; i < 1200; i++) {
scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
if (scratchpad == CCISS_FIRMWARE_READY)
break;
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(100)); /* wait 100ms */
}
if (scratchpad != CCISS_FIRMWARE_READY) {
printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
err = -ENODEV;
err = cciss_wait_for_board_ready(c);
if (err)
goto err_out_free_res;
}
/* get the address index number */
cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);

15
drivers/block/cciss.h
View File

@ -190,6 +190,21 @@ struct ctlr_info
#define CCISS_INTR_ON 1
#define CCISS_INTR_OFF 0
/* CCISS_BOARD_READY_WAIT_SECS is how long to wait for a board
* to become ready, in seconds, before giving up on it.
* CCISS_BOARD_READY_POLL_INTERVAL_MSECS * is how long to wait
* between polling the board to see if it is ready, in
* milliseconds. CCISS_BOARD_READY_ITERATIONS is derived
* the above.
*/
#define CCISS_BOARD_READY_WAIT_SECS (120)
#define CCISS_BOARD_READY_POLL_INTERVAL_MSECS (100)
#define CCISS_BOARD_READY_ITERATIONS \
((CCISS_BOARD_READY_WAIT_SECS * 1000) / \
CCISS_BOARD_READY_POLL_INTERVAL_MSECS)
/*
Send the command to the hardware
*/