RE: [PATCH/2.6.17-rc4 7/10] Powerpc: workaround for tsi108 pci c onfi g read exception
From: Zang Roy-r61911 <hidden>
Date: 2006-05-18 05:56:28
PB and PCI error flags will be set when issuing a PCI/X configuration read request. The error flags should be cleared or the system will be halt. Alex, is it right? Roy On May 17, 2006, at 5:14 AM, Zang Roy-r61911 wrote:
Workaround for Tundra Semiconductor tsi108 host bridge pci config read exception
Can you explain further why this is needed?
quoted hunk
Signed-off-by: Alexandre Bounine <redacted> Signed-off-by: Roy Zang <redacted> --- arch/powerpc/kernel/traps.c | 13 +++++++++++++ 1 files changed, 13 insertions(+), 0 deletions(-) 0575fbe21e4f1045528bb91ec4b34bb7955c4a92diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 064a525..7468d76 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c@@ -262,6 +262,19 @@ #if defined(CONFIG_PPC_PMAC) && defined( } } #endif /* CONFIG_PPC_PMAC && CONFIG_PPC32 */ + +#ifdef CONFIG_TSI108_BRIDGE + extern void tsi108_clear_pci_cfg_error(void); + const struct exception_table_entry *entry; + + /* Are we prepared to handle this fault? */ + if ((entry = search_exception_tables(regs->nip)) != NULL) { + tsi108_clear_pci_cfg_error(); + regs->msr |= MSR_RI; + regs->nip = entry->fixup; + return 1; + } +#endif /* CONFIG_TSI108_BRIDGE */ return 0; }-- 1.3.0 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev