diff options
| author | Tillmann Heidsieck <theidsieck@leenox.de> | 2016-08-15 21:08:49 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2016-08-18 10:17:40 +0200 |
| commit | 6fa06b0d9e9514bfca9b89493161f2a2cbb079a9 (patch) | |
| tree | 1e1166f6e0a54fb64a9a1c47b1583440198d42c5 /drivers/edac | |
| parent | 7bb8b777794bdeb9e53b3c0f39ed5474930a062a (diff) | |
| download | linux-6fa06b0d9e9514bfca9b89493161f2a2cbb079a9.tar.bz2 | |
EDAC, mpc85xx: Fix PCIe error capture
According to the reference manual of MPC8572 and T4240, bit 31 of
PEX_ERR_CAP_STAT is W1C (write 1 to clear).
Add the corresponding write to PEX_ERR_CAP_STAT in order to fix the PCIe
error capture.
Tested on a T4240 processor.
Signed-off-by: Tillmann Heidsieck <theidsieck@leenox.de>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/20160815190849.29327-1-theidsieck@leenox.de
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'drivers/edac')
| -rw-r--r-- | drivers/edac/mpc85xx_edac.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/edac/mpc85xx_edac.c b/drivers/edac/mpc85xx_edac.c index ca63d0da8889..f5283f5c07cb 100644 --- a/drivers/edac/mpc85xx_edac.c +++ b/drivers/edac/mpc85xx_edac.c @@ -187,14 +187,14 @@ static void mpc85xx_pci_check(struct edac_pci_ctl_info *pci) static void mpc85xx_pcie_check(struct edac_pci_ctl_info *pci) { struct mpc85xx_pci_pdata *pdata = pci->pvt_info; - u32 err_detect; + u32 err_detect, err_cap_stat; err_detect = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR); + err_cap_stat = in_be32(pdata->pci_vbase + MPC85XX_PCI_GAS_TIMR); pr_err("PCIe error(s) detected\n"); pr_err("PCIe ERR_DR register: 0x%08x\n", err_detect); - pr_err("PCIe ERR_CAP_STAT register: 0x%08x\n", - in_be32(pdata->pci_vbase + MPC85XX_PCI_GAS_TIMR)); + pr_err("PCIe ERR_CAP_STAT register: 0x%08x\n", err_cap_stat); pr_err("PCIe ERR_CAP_R0 register: 0x%08x\n", in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R0)); pr_err("PCIe ERR_CAP_R1 register: 0x%08x\n", @@ -206,6 +206,9 @@ static void mpc85xx_pcie_check(struct edac_pci_ctl_info *pci) /* clear error bits */ out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, err_detect); + + /* reset error capture */ + out_be32(pdata->pci_vbase + MPC85XX_PCI_GAS_TIMR, err_cap_stat | 0x1); } static int mpc85xx_pcie_find_capability(struct device_node *np) @@ -344,6 +347,9 @@ static int mpc85xx_pci_err_probe(struct platform_device *op) /* clear error bits */ out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, ~0); + /* reset error capture */ + out_be32(pdata->pci_vbase + MPC85XX_PCI_GAS_TIMR, 0x1); + if (edac_pci_add_device(pci, pdata->edac_idx) > 0) { edac_dbg(3, "failed edac_pci_add_device()\n"); goto err; |