| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 27 Nov 2007 10:57:27 -0800
From: Stephen Hemminger <shemminger@...ux-foundation.org>
To: Jeff Garzik <jgarzik@...ox.com>
Cc: netdev@...r.kernel.org
Subject: [PATCH 1/3] sky2: revert to access PCI config via device space
Using the hardware window into PCI config space is more reliable
and smaller/faster than using the pci_config routines. It avoids issues
with MMCONFIG etc.
Reverts: 167f53d05fccb47b6eeadac7f6705b3f2f042d03
Please apply for 2.6.24
Signed-off-by: Stephen Hemminger <shemminger@...ux-foundation.org>
--- a/drivers/net/sky2.c 2007-11-26 14:02:14.000000000 -0800
+++ b/drivers/net/sky2.c 2007-11-26 14:02:31.000000000 -0800
@@ -240,22 +240,21 @@ static void sky2_power_on(struct sky2_hw
sky2_write8(hw, B2_Y2_CLK_GATE, 0);
if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
- struct pci_dev *pdev = hw->pdev;
u32 reg;
- pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
+ sky2_pci_write32(hw, PCI_DEV_REG3, 0);
- pci_read_config_dword(pdev, PCI_DEV_REG4, ®);
+ reg = sky2_pci_read32(hw, PCI_DEV_REG4);
/* set all bits to 0 except bits 15..12 and 8 */
reg &= P_ASPM_CONTROL_MSK;
- pci_write_config_dword(pdev, PCI_DEV_REG4, reg);
+ sky2_pci_write32(hw, PCI_DEV_REG4, reg);
- pci_read_config_dword(pdev, PCI_DEV_REG5, ®);
+ reg = sky2_pci_read32(hw, PCI_DEV_REG5);
/* set all bits to 0 except bits 28 & 27 */
reg &= P_CTL_TIM_VMAIN_AV_MSK;
- pci_write_config_dword(pdev, PCI_DEV_REG5, reg);
+ sky2_pci_write32(hw, PCI_DEV_REG5, reg);
- pci_write_config_dword(pdev, PCI_CFG_REG_1, 0);
+ sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
/* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
reg = sky2_read32(hw, B2_GP_IO);
@@ -619,12 +618,11 @@ static void sky2_phy_init(struct sky2_hw
static void sky2_phy_power(struct sky2_hw *hw, unsigned port, int onoff)
{
- struct pci_dev *pdev = hw->pdev;
u32 reg1;
static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
- pci_read_config_dword(pdev, PCI_DEV_REG1, ®1);
+ reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
/* Turn on/off phy power saving */
if (onoff)
reg1 &= ~phy_power[port];
@@ -634,8 +632,8 @@ static void sky2_phy_power(struct sky2_h
if (onoff && hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
reg1 |= coma_mode[port];
- pci_write_config_dword(pdev, PCI_DEV_REG1, reg1);
- pci_read_config_dword(pdev, PCI_DEV_REG1, ®1);
+ sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
+ reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
udelay(100);
}
@@ -704,9 +702,9 @@ static void sky2_wol_init(struct sky2_po
sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
/* Turn on legacy PCI-Express PME mode */
- pci_read_config_dword(hw->pdev, PCI_DEV_REG1, ®1);
+ reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
reg1 |= PCI_Y2_PME_LEGACY;
- pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg1);
+ sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
/* block receiver */
sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
@@ -1322,9 +1320,10 @@ static int sky2_up(struct net_device *de
(cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
u16 cmd;
- pci_read_config_word(hw->pdev, cap + PCI_X_CMD, &cmd);
+ cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
cmd &= ~PCI_X_CMD_MAX_SPLIT;
- pci_write_config_word(hw->pdev, cap + PCI_X_CMD, cmd);
+ sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
+
}
if (netif_msg_ifup(sky2))
@@ -2422,12 +2421,12 @@ static void sky2_hw_intr(struct sky2_hw
if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
u16 pci_err;
- pci_read_config_word(pdev, PCI_STATUS, &pci_err);
+ pci_err = sky2_pci_read16(hw, PCI_STATUS);
if (net_ratelimit())
dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
pci_err);
- pci_write_config_word(pdev, PCI_STATUS,
+ sky2_pci_write16(hw, PCI_STATUS,
pci_err | PCI_STATUS_ERROR_BITS);
}
@@ -2699,13 +2698,10 @@ static inline u32 sky2_clk2us(const stru
static int __devinit sky2_init(struct sky2_hw *hw)
{
- int rc;
u8 t8;
/* Enable all clocks and check for bad PCI access */
- rc = pci_write_config_dword(hw->pdev, PCI_DEV_REG3, 0);
- if (rc)
- return rc;
+ sky2_pci_write32(hw, PCI_DEV_REG3, 0);
sky2_write8(hw, B0_CTST, CS_RST_CLR);
@@ -2802,9 +2798,9 @@ static void sky2_reset(struct sky2_hw *h
sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
/* clear PCI errors, if any */
- pci_read_config_word(pdev, PCI_STATUS, &status);
+ status = sky2_pci_read16(hw, PCI_STATUS);
status |= PCI_STATUS_ERROR_BITS;
- pci_write_config_word(pdev, PCI_STATUS, status);
+ sky2_pci_write16(hw, PCI_STATUS, status);
sky2_write8(hw, B0_CTST, CS_MRST_CLR);
@@ -3668,32 +3664,33 @@ static int sky2_set_tso(struct net_devic
static int sky2_get_eeprom_len(struct net_device *dev)
{
struct sky2_port *sky2 = netdev_priv(dev);
+ struct sky2_hw *hw = sky2->hw;
u16 reg2;
- pci_read_config_word(sky2->hw->pdev, PCI_DEV_REG2, ®2);
+ reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
}
-static u32 sky2_vpd_read(struct pci_dev *pdev, int cap, u16 offset)
+static u32 sky2_vpd_read(struct sky2_hw *hw, int cap, u16 offset)
{
u32 val;
- pci_write_config_word(pdev, cap + PCI_VPD_ADDR, offset);
+ sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
do {
- pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &offset);
+ offset = sky2_pci_read16(hw, cap + PCI_VPD_ADDR);
} while (!(offset & PCI_VPD_ADDR_F));
- pci_read_config_dword(pdev, cap + PCI_VPD_DATA, &val);
+ val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
return val;
}
-static void sky2_vpd_write(struct pci_dev *pdev, int cap, u16 offset, u32 val)
+static void sky2_vpd_write(struct sky2_hw *hw, int cap, u16 offset, u32 val)
{
- pci_write_config_word(pdev, cap + PCI_VPD_DATA, val);
- pci_write_config_dword(pdev, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
+ sky2_pci_write16(hw, cap + PCI_VPD_DATA, val);
+ sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
do {
- pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &offset);
+ offset = sky2_pci_read16(hw, cap + PCI_VPD_ADDR);
} while (offset & PCI_VPD_ADDR_F);
}
@@ -3711,7 +3708,7 @@ static int sky2_get_eeprom(struct net_de
eeprom->magic = SKY2_EEPROM_MAGIC;
while (length > 0) {
- u32 val = sky2_vpd_read(sky2->hw->pdev, cap, offset);
+ u32 val = sky2_vpd_read(sky2->hw, cap, offset);
int n = min_t(int, length, sizeof(val));
memcpy(data, &val, n);
@@ -3741,10 +3738,10 @@ static int sky2_set_eeprom(struct net_de
int n = min_t(int, length, sizeof(val));
if (n < sizeof(val))
- val = sky2_vpd_read(sky2->hw->pdev, cap, offset);
+ val = sky2_vpd_read(sky2->hw, cap, offset);
memcpy(&val, data, n);
- sky2_vpd_write(sky2->hw->pdev, cap, offset, val);
+ sky2_vpd_write(sky2->hw, cap, offset, val);
length -= n;
data += n;
@@ -4180,9 +4177,9 @@ static int __devinit sky2_probe(struct p
*/
{
u32 reg;
- pci_read_config_dword(pdev,PCI_DEV_REG2, ®);
+ reg = sky2_pci_read32(hw, PCI_DEV_REG2);
reg &= ~PCI_REV_DESC;
- pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
+ sky2_pci_write32(hw, PCI_DEV_REG2, reg);
}
#endif
@@ -4373,7 +4370,7 @@ static int sky2_resume(struct pci_dev *p
if (hw->chip_id == CHIP_ID_YUKON_EX ||
hw->chip_id == CHIP_ID_YUKON_EC_U ||
hw->chip_id == CHIP_ID_YUKON_FE_P)
- pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
+ sky2_pci_write32(hw, PCI_DEV_REG3, 0);
sky2_reset(hw);
sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
--- a/drivers/net/sky2.h 2007-11-26 13:37:36.000000000 -0800
+++ b/drivers/net/sky2.h 2007-11-26 14:02:31.000000000 -0800
@@ -2128,4 +2128,25 @@ static inline void gma_set_addr(struct s
gma_write16(hw, port, reg+4,(u16) addr[2] | ((u16) addr[3] << 8));
gma_write16(hw, port, reg+8,(u16) addr[4] | ((u16) addr[5] << 8));
}
+
+/* PCI config space access */
+static inline u32 sky2_pci_read32(const struct sky2_hw *hw, unsigned reg)
+{
+ return sky2_read32(hw, Y2_CFG_SPC + reg);
+}
+
+static inline u16 sky2_pci_read16(const struct sky2_hw *hw, unsigned reg)
+{
+ return sky2_read16(hw, Y2_CFG_SPC + reg);
+}
+
+static inline void sky2_pci_write32(struct sky2_hw *hw, unsigned reg, u32 val)
+{
+ sky2_write32(hw, Y2_CFG_SPC + reg, val);
+}
+
+static inline void sky2_pci_write16(struct sky2_hw *hw, unsigned reg, u16 val)
+{
+ sky2_write16(hw, Y2_CFG_SPC + reg, val);
+}
#endif
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists