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myri10ge: Use PCI Express Capability accessors

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Use PCI Express Capability access functions to simplify myri10ge driver.

[bhelgaas: fix myri10ge_toggle_relaxed() return value]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Jiang Liu 2012-07-24 17:20:22 +08:00 committed by Bjorn Helgaas
parent 56cda12986
commit 9503e25576
1 changed files with 8 additions and 23 deletions
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31
drivers/net/ethernet/myricom/myri10ge/myri10ge.c
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@ -1078,22 +1078,16 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
#ifdef CONFIG_MYRI10GE_DCA
static int myri10ge_toggle_relaxed(struct pci_dev *pdev, int on)
{
int ret, cap, err;
int ret;
u16 ctl;
cap = pci_pcie_cap(pdev);
if (!cap)
return 0;
err = pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
if (err)
return 0;
pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &ctl);
ret = (ctl & PCI_EXP_DEVCTL_RELAX_EN) >> 4;
if (ret != on) {
ctl &= ~PCI_EXP_DEVCTL_RELAX_EN;
ctl |= (on << 4);
pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
pcie_capability_write_word(pdev, PCI_EXP_DEVCTL, ctl);
}
return ret;
}
@ -3192,18 +3186,13 @@ static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp)
struct device *dev = &mgp->pdev->dev;
int cap;
unsigned err_cap;
u16 val;
u8 ext_type;
int ret;
if (!myri10ge_ecrc_enable || !bridge)
return;
/* check that the bridge is a root port */
cap = pci_pcie_cap(bridge);
pci_read_config_word(bridge, cap + PCI_CAP_FLAGS, &val);
ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
if (ext_type != PCI_EXP_TYPE_ROOT_PORT) {
if (pci_pcie_type(bridge) != PCI_EXP_TYPE_ROOT_PORT) {
if (myri10ge_ecrc_enable > 1) {
struct pci_dev *prev_bridge, *old_bridge = bridge;
@ -3218,11 +3207,8 @@ static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp)
" to force ECRC\n");
return;
}
cap = pci_pcie_cap(bridge);
pci_read_config_word(bridge,
cap + PCI_CAP_FLAGS, &val);
ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
} while (ext_type != PCI_EXP_TYPE_ROOT_PORT);
} while (pci_pcie_type(bridge) !=
PCI_EXP_TYPE_ROOT_PORT);
dev_info(dev,
"Forcing ECRC on non-root port %s"
@ -3335,11 +3321,10 @@ static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
int overridden = 0;
if (myri10ge_force_firmware == 0) {
int link_width, exp_cap;
int link_width;
u16 lnk;
exp_cap = pci_pcie_cap(mgp->pdev);
pci_read_config_word(mgp->pdev, exp_cap + PCI_EXP_LNKSTA, &lnk);
pcie_capability_read_word(mgp->pdev, PCI_EXP_LNKSTA, &lnk);
link_width = (lnk >> 4) & 0x3f;
/* Check to see if Link is less than 8 or if the