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Subject[PATCH 18/26] cciss: factor out cciss_find_cfg_addrs.
From
Date
From: Stephen M. Cameron <scameron@beardog.cce.hp.com>

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>
---
drivers/block/cciss.c | 35 +++++++++++++++++++++++------------
1 files changed, 23 insertions(+), 12 deletions(-)
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 17e420c..3cd8397 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -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));


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