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Date: Wed, 1 Aug 2012 23:54:26 +0800
From: Jiang Liu <liuj97@...il.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>,
Don Dutile <ddutile@...hat.com>, Jon Mason <mason@...i.com>,
Andrew Gallatin <gallatin@...i.com>
Cc: Jiang Liu <jiang.liu@...wei.com>, Yinghai Lu <yinghai@...nel.org>,
Taku Izumi <izumi.taku@...fujitsu.com>,
"Rafael J . Wysocki" <rjw@...k.pl>,
Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>,
Yijing Wang <wangyijing@...wei.com>,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
Jiang Liu <liuj97@...il.com>
Subject: [PATCH v3 21/32] PCI/myri10ge: use PCIe capabilities access functions to simplify implementation
From: Jiang Liu <jiang.liu@...wei.com>
Use PCIe capabilities access functions to simplify myri10ge driver's
implementation.
Signed-off-by: Jiang Liu <liuj97@...il.com>
Signed-off-by: Yijing Wang <wangyijing@...wei.com>
---
drivers/net/ethernet/myricom/myri10ge/myri10ge.c | 39 ++++------------------
1 file changed, 7 insertions(+), 32 deletions(-)
diff --git a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
index 90153fc..fe6c44d 100644
--- a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
+++ b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
@@ -1078,24 +1078,8 @@ 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;
- 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;
-
- 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);
- }
- return ret;
+ return pci_pcie_capability_change_word(pdev, PCI_EXP_DEVCTL,
+ on << 4, PCI_EXP_DEVCTL_RELAX_EN);
}
static void
@@ -3192,18 +3176,13 @@ 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 +3197,8 @@ 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 +3311,10 @@ 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);
+ pci_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
--
1.7.9.5
--
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