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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>
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0a9279cc7c
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1 changed files with 14 additions and 5 deletions
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@ -3265,12 +3265,21 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
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*/
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cciss_interrupt_mode(c, pdev, board_id);
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/*
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* Memory base addr is first addr , the second points to the config
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* table
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*/
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/* find the memory BAR */
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for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
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if (pci_resource_flags(pdev, i) & IORESOURCE_MEM)
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break;
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}
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if (i == DEVICE_COUNT_RESOURCE) {
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printk(KERN_WARNING "cciss: No memory BAR found\n");
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err = -ENODEV;
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goto err_out_free_res;
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}
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c->paddr = pci_resource_start(pdev, i); /* addressing mode bits
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* already removed
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*/
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c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
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#ifdef CCISS_DEBUG
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printk("address 0 = %lx\n", c->paddr);
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#endif /* CCISS_DEBUG */
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