diff options
| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2008-07-25 18:01:35 +0400 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-07-31 00:54:38 +0400 |
| commit | 455cc256eb23915100e203fb33ee143afd127954 (patch) | |
| tree | 1ad0c410fef0f7d82587347c3d3e4d4c9646dcee /arch/mips/pci/ops-tx3927.c | |
| parent | 07517529225ae4ce770271f83d8cd1004733a01d (diff) | |
| download | linux-455cc256eb23915100e203fb33ee143afd127954.tar.xz | |
[MIPS] TXx9: PCI error handling
From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Thu, 24 Jul 2008 00:25:16 +0900
Subject: [PATCH] txx9: PCI error handling
Add more control and detailed report on PCI error interrupt.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/pci/ops-tx3927.c')
| -rw-r--r-- | arch/mips/pci/ops-tx3927.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/mips/pci/ops-tx3927.c b/arch/mips/pci/ops-tx3927.c index c6bd79e71e26..31c150196595 100644 --- a/arch/mips/pci/ops-tx3927.c +++ b/arch/mips/pci/ops-tx3927.c @@ -37,8 +37,11 @@ #include <linux/pci.h> #include <linux/kernel.h> #include <linux/init.h> +#include <linux/interrupt.h> #include <asm/addrspace.h> +#include <asm/txx9irq.h> +#include <asm/txx9/pci.h> #include <asm/txx9/tx3927.h> static int mkaddr(struct pci_bus *bus, unsigned char devfn, unsigned char where) @@ -194,3 +197,34 @@ void __init tx3927_pcic_setup(struct pci_controller *channel, PCI_COMMAND_PARITY | PCI_COMMAND_SERR; local_irq_restore(flags); } + +static irqreturn_t tx3927_pcierr_interrupt(int irq, void *dev_id) +{ + struct pt_regs *regs = get_irq_regs(); + + if (txx9_pci_err_action != TXX9_PCI_ERR_IGNORE) { + printk(KERN_WARNING "PCI error interrupt at 0x%08lx.\n", + regs->cp0_epc); + printk(KERN_WARNING "pcistat:%02x, lbstat:%04lx\n", + tx3927_pcicptr->pcistat, tx3927_pcicptr->lbstat); + } + if (txx9_pci_err_action != TXX9_PCI_ERR_PANIC) { + /* clear all pci errors */ + tx3927_pcicptr->pcistat |= TX3927_PCIC_PCISTATIM_ALL; + tx3927_pcicptr->istat = TX3927_PCIC_IIM_ALL; + tx3927_pcicptr->tstat = TX3927_PCIC_TIM_ALL; + tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL; + return IRQ_HANDLED; + } + console_verbose(); + panic("PCI error."); +} + +void __init tx3927_setup_pcierr_irq(void) +{ + if (request_irq(TXX9_IRQ_BASE + TX3927_IR_PCI, + tx3927_pcierr_interrupt, + IRQF_DISABLED, "PCI error", + (void *)TX3927_PCIC_REG)) + printk(KERN_WARNING "Failed to request irq for PCIERR\n"); +} |