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edac/85xx: Add PCIe error interrupt edac support

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Add pcie error interrupt edac support for mpc85xx, p3041, p4080, and
p5020. The mpc85xx uses the legacy interrupt report mechanism - the
error interrupts are reported directly to mpic. While the p3041/
p4080/p5020 attaches the most of error interrupts to interrupt zero. And
report error interrupts to mpic via interrupt 0.

This patch can handle both of them.

Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com>
Link: http://lkml.kernel.org/r/1384712714-8826-3-git-send-email-morbidrsa@gmail.com
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Dave Jiang <dave.jiang@gmail.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
This commit is contained in:
Chunhe Lan 2013-11-25 11:28:41 +01:00 committed by Borislav Petkov
parent 6ce4eac1f6
commit c92132f598
2 changed files with 94 additions and 11 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

98
drivers/edac/mpc85xx_edac.c
View file

@ -1,6 +1,8 @@
/* /*
* Freescale MPC85xx Memory Controller kenel module * Freescale MPC85xx Memory Controller kenel module
* *
* Parts Copyrighted (c) 2013 by Freescale Semiconductor, Inc.
*
* Author: Dave Jiang <djiang@mvista.com> * Author: Dave Jiang <djiang@mvista.com>
* *
* 2006-2007 (c) MontaVista Software, Inc. This file is licensed under * 2006-2007 (c) MontaVista Software, Inc. This file is licensed under
@ -196,6 +198,42 @@ static void mpc85xx_pci_check(struct edac_pci_ctl_info *pci)
edac_pci_handle_npe(pci, pci->ctl_name); edac_pci_handle_npe(pci, pci->ctl_name);
} }
static void mpc85xx_pcie_check(struct edac_pci_ctl_info *pci)
{
struct mpc85xx_pci_pdata *pdata = pci->pvt_info;
u32 err_detect;
err_detect = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR);
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_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",
in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R1));
pr_err("PCIe ERR_CAP_R2 register: 0x%08x\n",
in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R2));
pr_err("PCIe ERR_CAP_R3 register: 0x%08x\n",
in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R3));
/* clear error bits */
out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, err_detect);
}
static int mpc85xx_pcie_find_capability(struct device_node *np)
{
struct pci_controller *hose;
if (!np)
return -EINVAL;
hose = pci_find_hose_for_OF_device(np);
return early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP);
}
static irqreturn_t mpc85xx_pci_isr(int irq, void *dev_id) static irqreturn_t mpc85xx_pci_isr(int irq, void *dev_id)
{ {
struct edac_pci_ctl_info *pci = dev_id; struct edac_pci_ctl_info *pci = dev_id;
@ -207,7 +245,10 @@ static irqreturn_t mpc85xx_pci_isr(int irq, void *dev_id)
if (!err_detect) if (!err_detect)
return IRQ_NONE; return IRQ_NONE;
mpc85xx_pci_check(pci); if (pdata->is_pcie)
mpc85xx_pcie_check(pci);
else
mpc85xx_pci_check(pci);
return IRQ_HANDLED; return IRQ_HANDLED;
} }
@ -239,14 +280,22 @@ int mpc85xx_pci_err_probe(struct platform_device *op)
pdata = pci->pvt_info; pdata = pci->pvt_info;
pdata->name = "mpc85xx_pci_err"; pdata->name = "mpc85xx_pci_err";
pdata->irq = NO_IRQ; pdata->irq = NO_IRQ;
if (mpc85xx_pcie_find_capability(op->dev.of_node) > 0)
pdata->is_pcie = true;
dev_set_drvdata(&op->dev, pci); dev_set_drvdata(&op->dev, pci);
pci->dev = &op->dev; pci->dev = &op->dev;
pci->mod_name = EDAC_MOD_STR; pci->mod_name = EDAC_MOD_STR;
pci->ctl_name = pdata->name; pci->ctl_name = pdata->name;
pci->dev_name = dev_name(&op->dev); pci->dev_name = dev_name(&op->dev);
if (edac_op_state == EDAC_OPSTATE_POLL) if (edac_op_state == EDAC_OPSTATE_POLL) {
pci->edac_check = mpc85xx_pci_check; if (pdata->is_pcie)
pci->edac_check = mpc85xx_pcie_check;
else
pci->edac_check = mpc85xx_pci_check;
}
pdata->edac_idx = edac_pci_idx++; pdata->edac_idx = edac_pci_idx++;
@ -275,16 +324,26 @@ int mpc85xx_pci_err_probe(struct platform_device *op)
goto err; goto err;
} }
orig_pci_err_cap_dr = if (pdata->is_pcie) {
in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR); orig_pci_err_cap_dr =
in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR);
out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR, ~0);
orig_pci_err_en =
in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN);
out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, 0);
} else {
orig_pci_err_cap_dr =
in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR);
/* PCI master abort is expected during config cycles */ /* PCI master abort is expected during config cycles */
out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR, 0x40); out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR, 0x40);
orig_pci_err_en = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN); orig_pci_err_en =
in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN);
/* disable master abort reporting */ /* disable master abort reporting */
out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, ~0x40); out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, ~0x40);
}
/* clear error bits */ /* clear error bits */
out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, ~0); out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, ~0);
@ -297,7 +356,8 @@ int mpc85xx_pci_err_probe(struct platform_device *op)
if (edac_op_state == EDAC_OPSTATE_INT) { if (edac_op_state == EDAC_OPSTATE_INT) {
pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0); pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0);
res = devm_request_irq(&op->dev, pdata->irq, res = devm_request_irq(&op->dev, pdata->irq,
mpc85xx_pci_isr, IRQF_DISABLED, mpc85xx_pci_isr,
IRQF_DISABLED | IRQF_SHARED,
"[EDAC] PCI err", pci); "[EDAC] PCI err", pci);
if (res < 0) { if (res < 0) {
printk(KERN_ERR printk(KERN_ERR
@ -312,6 +372,22 @@ int mpc85xx_pci_err_probe(struct platform_device *op)
pdata->irq); pdata->irq);
} }
if (pdata->is_pcie) {
/*
* Enable all PCIe error interrupt & error detect except invalid
* PEX_CONFIG_ADDR/PEX_CONFIG_DATA access interrupt generation
* enable bit and invalid PEX_CONFIG_ADDR/PEX_CONFIG_DATA access
* detection enable bit. Because PCIe bus code to initialize and
* configure these PCIe devices on booting will use some invalid
* PEX_CONFIG_ADDR/PEX_CONFIG_DATA, edac driver prints the much
* notice information. So disable this detect to fix ugly print.
*/
out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, ~0
& ~PEX_ERR_ICCAIE_EN_BIT);
out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR, 0
| PEX_ERR_ICCAD_DISR_BIT);
}
devres_remove_group(&op->dev, mpc85xx_pci_err_probe); devres_remove_group(&op->dev, mpc85xx_pci_err_probe);
edac_dbg(3, "success\n"); edac_dbg(3, "success\n");
printk(KERN_INFO EDAC_MOD_STR " PCI err registered\n"); printk(KERN_INFO EDAC_MOD_STR " PCI err registered\n");

7
drivers/edac/mpc85xx_edac.h
View file

@ -134,13 +134,19 @@
#define MPC85XX_PCI_ERR_DR 0x0000 #define MPC85XX_PCI_ERR_DR 0x0000
#define MPC85XX_PCI_ERR_CAP_DR 0x0004 #define MPC85XX_PCI_ERR_CAP_DR 0x0004
#define MPC85XX_PCI_ERR_EN 0x0008 #define MPC85XX_PCI_ERR_EN 0x0008
#define PEX_ERR_ICCAIE_EN_BIT 0x00020000
#define MPC85XX_PCI_ERR_ATTRIB 0x000c #define MPC85XX_PCI_ERR_ATTRIB 0x000c
#define MPC85XX_PCI_ERR_ADDR 0x0010 #define MPC85XX_PCI_ERR_ADDR 0x0010
#define PEX_ERR_ICCAD_DISR_BIT 0x00020000
#define MPC85XX_PCI_ERR_EXT_ADDR 0x0014 #define MPC85XX_PCI_ERR_EXT_ADDR 0x0014
#define MPC85XX_PCI_ERR_DL 0x0018 #define MPC85XX_PCI_ERR_DL 0x0018
#define MPC85XX_PCI_ERR_DH 0x001c #define MPC85XX_PCI_ERR_DH 0x001c
#define MPC85XX_PCI_GAS_TIMR 0x0020 #define MPC85XX_PCI_GAS_TIMR 0x0020
#define MPC85XX_PCI_PCIX_TIMR 0x0024 #define MPC85XX_PCI_PCIX_TIMR 0x0024
#define MPC85XX_PCIE_ERR_CAP_R0 0x0028
#define MPC85XX_PCIE_ERR_CAP_R1 0x002c
#define MPC85XX_PCIE_ERR_CAP_R2 0x0030
#define MPC85XX_PCIE_ERR_CAP_R3 0x0034
struct mpc85xx_mc_pdata { struct mpc85xx_mc_pdata {
char *name; char *name;
@ -158,6 +164,7 @@ struct mpc85xx_l2_pdata {
struct mpc85xx_pci_pdata { struct mpc85xx_pci_pdata {
char *name; char *name;
bool is_pcie;
int edac_idx; int edac_idx;
void __iomem *pci_vbase; void __iomem *pci_vbase;
int irq; int irq;