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cciss: change to discover first memory BAR 

Add a method for discovering the first memory BAR.  All Smart Array
controllers to date have always had the the memory BAR as the first BAR.
A new controller to be released later this year breaks that model.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Mike Miller 2009-04-02 12:50:56 -07:00 committed by Jens Axboe
parent 0a9279cc7c
commit e143858104
1 changed files with 14 additions and 5 deletions
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19
drivers/block/cciss.c
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@ -3265,12 +3265,21 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
*/
cciss_interrupt_mode(c, pdev, board_id);
/*
* Memory base addr is first addr , the second points to the config
* table
*/
/* find the memory BAR */
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
if (pci_resource_flags(pdev, i) & IORESOURCE_MEM)
break;
}
if (i == DEVICE_COUNT_RESOURCE) {
printk(KERN_WARNING "cciss: No memory BAR found\n");
err = -ENODEV;
goto err_out_free_res;
}
c->paddr = pci_resource_start(pdev, i); /* addressing mode bits
* already removed
*/
c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
#ifdef CCISS_DEBUG
printk("address 0 = %lx\n", c->paddr);
#endif /* CCISS_DEBUG */