v1->v2: use pcie_get/set_readrq to simplify code
a lot suggestd by Bjorn.
Use pcie_get_readrq()/pcie_set_readrq() to simplify
code.
Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
Cc: Jiang Liu <jiang.liu@xxxxxxxxxx>
Cc: Anil Gurumurthy <agurumur@xxxxxxxxxxx>
Cc: Vijaya Mohan Guvva <vmohan@xxxxxxxxxxx>
Cc: "James E.J. Bottomley" <JBottomley@xxxxxxxxxxxxx>
Cc: linux-scsi@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
drivers/scsi/bfa/bfad.c | 48 +++++-----------------------------------------
1 files changed, 6 insertions(+), 42 deletions(-)
diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c
index f8ca7be..0a458db 100644
--- a/drivers/scsi/bfa/bfad.c
+++ b/drivers/scsi/bfa/bfad.c
@@ -766,50 +766,14 @@ bfad_pci_init(struct pci_dev *pdev, struct bfad_s *bfad)
bfad->pcidev = pdev;
/* Adjust PCIe Maximum Read Request Size */
- if (pcie_max_read_reqsz > 0) {
- int pcie_cap_reg;
- u16 pcie_dev_ctl;
- u16 mask = 0xffff;
-
- switch (pcie_max_read_reqsz) {
- case 128:
- mask = 0x0;
- break;
- case 256:
- mask = 0x1000;
- break;
- case 512:
- mask = 0x2000;
- break;
- case 1024:
- mask = 0x3000;
- break;
- case 2048:
- mask = 0x4000;
- break;
- case 4096:
- mask = 0x5000;
- break;
- default:
- break;
- }
-
- pcie_cap_reg = pci_find_capability(pdev, PCI_CAP_ID_EXP);
- if (mask != 0xffff && pcie_cap_reg) {
- pcie_cap_reg += 0x08;
- pci_read_config_word(pdev, pcie_cap_reg, &pcie_dev_ctl);
- if ((pcie_dev_ctl & 0x7000) != mask) {
- printk(KERN_WARNING "BFA[%s]: "
+ if (pcie_max_read_reqsz > 0 && pci_is_pcie(pdev)) {
+ int max_rq = pcie_get_readrq(pdev);
+ if (max_rq > 128 && max_rq < 4096 && is_power_of_2(max_rq))
+ printk(KERN_WARNING "BFA[%s]: "
"pcie_max_read_request_size is %d, "
- "reset to %d\n", bfad->pci_name,
- (1 << ((pcie_dev_ctl & 0x7000) >> 12)) << 7,
+ "reset to %d\n", bfad->pci_name, max_rq,
pcie_max_read_reqsz);
-
- pcie_dev_ctl &= ~0x7000;
- pci_write_config_word(pdev, pcie_cap_reg,
- pcie_dev_ctl | mask);
- }
- }
+ pcie_set_readrq(pdev, pcie_max_read_reqsz);
}
pci_save_state(pdev);
--
1.7.1
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