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atl1c: fix issue of io access mode for AR8152 v2.1

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When io access mode is enabled by BOOTROM or BIOS for AR8152 v2.1,
the register can't be read/write by memory access mode.
Clearing Bit 8  of Register 0x21c could fixed the issue.

Signed-off-by: Cloud Ren <cjren@qca.qualcomm.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: xiong <xiong@qca.qualcomm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cloud Ren 2012-07-19 17:01:58 +00:00 committed by David S. Miller
parent b09e786bd1
commit fa0afcd109
2 changed files with 20 additions and 1 deletions
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5
drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
View file

@ -74,6 +74,8 @@ void atl1c_post_phy_linkchg(struct atl1c_hw *hw, u16 link_speed);
#define PCI_DEVICE_ID_ATHEROS_L1D_2_0 0x1083 /* AR8151 v2.0 Gigabit 1000 */
#define L2CB_V10 0xc0
#define L2CB_V11 0xc1
#define L2CB_V20 0xc0
#define L2CB_V21 0xc1
/* register definition */
#define REG_DEVICE_CAP 0x5C
@ -87,6 +89,9 @@ void atl1c_post_phy_linkchg(struct atl1c_hw *hw, u16 link_speed);
#define LINK_CTRL_L1_EN 0x02
#define LINK_CTRL_EXT_SYNC 0x80
#define REG_PCIE_IND_ACC_ADDR 0x80
#define REG_PCIE_IND_ACC_DATA 0x84
#define REG_DEV_SERIALNUM_CTRL 0x200
#define REG_DEV_MAC_SEL_MASK 0x0 /* 0:EUI; 1:MAC */
#define REG_DEV_MAC_SEL_SHIFT 0

16
drivers/net/ethernet/atheros/atl1c/atl1c_main.c
View file

@ -727,6 +727,8 @@ static const struct atl1c_platform_patch plats[] __devinitdata = {
static void __devinit atl1c_patch_assign(struct atl1c_hw *hw)
{
struct pci_dev *pdev = hw->adapter->pdev;
u32 misc_ctrl;
int i = 0;
hw->msi_lnkpatch = false;
@ -741,6 +743,18 @@ static void __devinit atl1c_patch_assign(struct atl1c_hw *hw)
}
i++;
}
if (hw->device_id == PCI_DEVICE_ID_ATHEROS_L2C_B2 &&
hw->revision_id == L2CB_V21) {
/* config acess mode */
pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR,
REG_PCIE_DEV_MISC_CTRL);
pci_read_config_dword(pdev, REG_PCIE_IND_ACC_DATA, &misc_ctrl);
misc_ctrl &= ~0x100;
pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR,
REG_PCIE_DEV_MISC_CTRL);
pci_write_config_dword(pdev, REG_PCIE_IND_ACC_DATA, misc_ctrl);
}
}
/**
* atl1c_sw_init - Initialize general software structures (struct atl1c_adapter)
@ -768,7 +782,7 @@ static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter)
hw->device_id = pdev->device;
hw->subsystem_vendor_id = pdev->subsystem_vendor;
hw->subsystem_id = pdev->subsystem_device;
AT_READ_REG(hw, PCI_CLASS_REVISION, &revision);
pci_read_config_dword(pdev, PCI_CLASS_REVISION, &revision);
hw->revision_id = revision & 0xFF;
/* before link up, we assume hibernate is true */
hw->hibernate = true;