From e143858104e318263689c551543dfc3f186cea12 Mon Sep 17 00:00:00 2001 From: Mike Miller Date: Thu, 2 Apr 2009 12:50:56 -0700 Subject: [PATCH] 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 Cc: James Bottomley Signed-off-by: Andrew Morton Signed-off-by: Jens Axboe --- drivers/block/cciss.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 4e5441baa49..219c530c8da 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -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 */ -- 2.41.0