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[PATCH] skge: handle pci errors better 

When a PCI error occurs, try and report more info.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Stephen Hemminger 2006-03-21 10:57:06 -08:00 committed by Jeff Garzik
parent 203babb650
commit b9d64acc82
1 changed files with 30 additions and 21 deletions
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51
drivers/net/skge.c
View File

@ -2764,17 +2764,6 @@ static void skge_mac_parity(struct skge_hw *hw, int port)
? GMF_CLI_TX_FC : GMF_CLI_TX_PE); ? GMF_CLI_TX_FC : GMF_CLI_TX_PE);
} }
static void skge_pci_clear(struct skge_hw *hw)
{
u16 status;
pci_read_config_word(hw->pdev, PCI_STATUS, &status);
skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
pci_write_config_word(hw->pdev, PCI_STATUS,
status | PCI_STATUS_ERROR_BITS);
skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
}
static void skge_mac_intr(struct skge_hw *hw, int port) static void skge_mac_intr(struct skge_hw *hw, int port)
{ {
if (hw->chip_id == CHIP_ID_GENESIS) if (hw->chip_id == CHIP_ID_GENESIS)
@ -2816,23 +2805,39 @@ static void skge_error_irq(struct skge_hw *hw)
if (hwstatus & IS_M2_PAR_ERR) if (hwstatus & IS_M2_PAR_ERR)
skge_mac_parity(hw, 1); skge_mac_parity(hw, 1);
if (hwstatus & IS_R1_PAR_ERR) if (hwstatus & IS_R1_PAR_ERR) {
printk(KERN_ERR PFX "%s: receive queue parity error\n",
hw->dev[0]->name);
skge_write32(hw, B0_R1_CSR, CSR_IRQ_CL_P); skge_write32(hw, B0_R1_CSR, CSR_IRQ_CL_P);
}
if (hwstatus & IS_R2_PAR_ERR) if (hwstatus & IS_R2_PAR_ERR) {
printk(KERN_ERR PFX "%s: receive queue parity error\n",
hw->dev[1]->name);
skge_write32(hw, B0_R2_CSR, CSR_IRQ_CL_P); skge_write32(hw, B0_R2_CSR, CSR_IRQ_CL_P);
}
if (hwstatus & (IS_IRQ_MST_ERR|IS_IRQ_STAT)) { if (hwstatus & (IS_IRQ_MST_ERR|IS_IRQ_STAT)) {
printk(KERN_ERR PFX "hardware error detected (status 0x%x)\n", u16 pci_status, pci_cmd;
hwstatus);
skge_pci_clear(hw); pci_read_config_word(hw->pdev, PCI_COMMAND, &pci_cmd);
pci_read_config_word(hw->pdev, PCI_STATUS, &pci_status);
printk(KERN_ERR PFX "%s: PCI error cmd=%#x status=%#x\n",
pci_name(hw->pdev), pci_cmd, pci_status);
/* Write the error bits back to clear them. */
pci_status &= PCI_STATUS_ERROR_BITS;
skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
pci_write_config_word(hw->pdev, PCI_COMMAND,
pci_cmd | PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
pci_write_config_word(hw->pdev, PCI_STATUS, pci_status);
skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
/* if error still set then just ignore it */ /* if error still set then just ignore it */
hwstatus = skge_read32(hw, B0_HWE_ISRC); hwstatus = skge_read32(hw, B0_HWE_ISRC);
if (hwstatus & IS_IRQ_STAT) { if (hwstatus & IS_IRQ_STAT) {
pr_debug("IRQ status %x: still set ignoring hardware errors\n", printk(KERN_INFO PFX "unable to clear error (so ignoring them)\n");
hwstatus);
hw->intr_mask &= ~IS_HW_ERR; hw->intr_mask &= ~IS_HW_ERR;
} }
} }
@ -2998,7 +3003,7 @@ static const char *skge_board_name(const struct skge_hw *hw)
static int skge_reset(struct skge_hw *hw) static int skge_reset(struct skge_hw *hw)
{ {
u32 reg; u32 reg;
u16 ctst; u16 ctst, pci_status;
u8 t8, mac_cfg, pmd_type, phy_type; u8 t8, mac_cfg, pmd_type, phy_type;
int i; int i;
@ -3009,8 +3014,13 @@ static int skge_reset(struct skge_hw *hw)
skge_write8(hw, B0_CTST, CS_RST_CLR); skge_write8(hw, B0_CTST, CS_RST_CLR);
/* clear PCI errors, if any */ /* clear PCI errors, if any */
skge_pci_clear(hw); skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
skge_write8(hw, B2_TST_CTRL2, 0);
pci_read_config_word(hw->pdev, PCI_STATUS, &pci_status);
pci_write_config_word(hw->pdev, PCI_STATUS,
pci_status | PCI_STATUS_ERROR_BITS);
skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
skge_write8(hw, B0_CTST, CS_MRST_CLR); skge_write8(hw, B0_CTST, CS_MRST_CLR);
/* restore CLK_RUN bits (for Yukon-Lite) */ /* restore CLK_RUN bits (for Yukon-Lite) */
@ -3377,7 +3387,6 @@ static void __devexit skge_remove(struct pci_dev *pdev)
skge_write32(hw, B0_IMSK, 0); skge_write32(hw, B0_IMSK, 0);
skge_write16(hw, B0_LED, LED_STAT_OFF); skge_write16(hw, B0_LED, LED_STAT_OFF);
skge_pci_clear(hw);
skge_write8(hw, B0_CTST, CS_RST_SET); skge_write8(hw, B0_CTST, CS_RST_SET);
tasklet_kill(&hw->ext_tasklet); tasklet_kill(&hw->ext_tasklet);