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cciss: factor out cciss_find_cfg_addrs.

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Rationale for this is that I will also need to use this code
in fixing kdump host reset code prior to having the hba structure.

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 13:46:12 -05:00 committed by Jens Axboe
parent b993313540
commit 8e93bf6d6c
1 changed files with 23 additions and 12 deletions
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35
drivers/block/cciss.c
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@ -4064,29 +4064,40 @@ static int __devinit cciss_wait_for_board_ready(ctlr_info_t *h)
return -ENODEV;
}
static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev,
void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index,
u64 *cfg_offset)
{
*cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
*cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
*cfg_base_addr &= (u32) 0x0000ffff;
*cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
if (*cfg_base_addr_index == -1) {
dev_warn(&pdev->dev, "cannot find cfg_base_addr_index, "
"*cfg_base_addr = 0x%08x\n", *cfg_base_addr);
return -ENODEV;
}
return 0;
}
static int __devinit cciss_find_cfgtables(ctlr_info_t *h)
{
u64 cfg_offset;
u32 cfg_base_addr;
u64 cfg_base_addr_index;
u32 trans_offset;
int rc;
/* get the address index number */
cfg_base_addr = readl(h->vaddr + SA5_CTCFG_OFFSET);
cfg_base_addr &= (u32) 0x0000ffff;
cfg_base_addr_index = find_PCI_BAR_index(h->pdev, cfg_base_addr);
if (cfg_base_addr_index == -1) {
dev_warn(&h->pdev->dev, "cannot find cfg_base_addr_index\n");
return -ENODEV;
}
cfg_offset = readl(h->vaddr + SA5_CTMEM_OFFSET);
rc = cciss_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
&cfg_base_addr_index, &cfg_offset);
if (rc)
return rc;
h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
cfg_base_addr_index) + cfg_offset,
sizeof(h->cfgtable));
cfg_base_addr_index) + cfg_offset, sizeof(h->cfgtable));
if (!h->cfgtable)
return -ENOMEM;
/* Find performant mode table. */
trans_offset = readl(&(h->cfgtable->TransMethodOffset));
trans_offset = readl(&h->cfgtable->TransMethodOffset);
h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
cfg_base_addr_index)+cfg_offset+trans_offset,
sizeof(*h->transtable));