From 455cc256eb23915100e203fb33ee143afd127954 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Fri, 25 Jul 2008 23:01:35 +0900 Subject: [MIPS] TXx9: PCI error handling From: Atsushi Nemoto 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 Signed-off-by: Ralf Baechle --- arch/mips/pci/ops-tx3927.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'arch/mips/pci/ops-tx3927.c') diff --git a/arch/mips/pci/ops-tx3927.c b/arch/mips/pci/ops-tx3927.c index c6bd79e71e2..31c15019659 100644 --- a/arch/mips/pci/ops-tx3927.c +++ b/arch/mips/pci/ops-tx3927.c @@ -37,8 +37,11 @@ #include #include #include +#include #include +#include +#include #include 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"); +} -- cgit v1.2.3-70-g09d2