From fcf9892b553ba638e6c8f9b6a140c99927c69693 Mon Sep 17 00:00:00 2001 From: Linas Vepstas Date: Wed, 9 May 2007 09:36:21 +1000 Subject: [PATCH] [POWERPC] EEH: log all PCI-X and PCI-E AER registers When an EEH event is detected, and after the device driver has been notified, but before the device is reset, enable MMIO to the adapter, and grab the contents of the PCI status and command registers, the PCI-X status and command, and the PCI-E capability 10 and AER registers. Pass these up to the RTAS error log, and also printk them. Signed-off-by: Linas Vepstas Signed-off-by: Paul Mackerras --- arch/powerpc/platforms/pseries/eeh.c | 48 ++++++++++++++++++++++++++-- 1 file changed, 46 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index b58ed05078b8..093438b93bd9 100644 --- a/arch/powerpc/platforms/pseries/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -160,14 +160,58 @@ static void rtas_slot_error_detail(struct pci_dn *pdn, int severity, static size_t gather_pci_data(struct pci_dn *pdn, char * buf, size_t len) { u32 cfg; + int cap, i; int n = 0; - n += scnprintf(buf+n, len-n, "%s\n", pdn->node->name); + n += scnprintf(buf+n, len-n, "%s\n", pdn->node->full_name); + printk(KERN_WARNING "EEH: of node=%s\n", pdn->node->full_name); + rtas_read_config(pdn, PCI_VENDOR_ID, 4, &cfg); - n += scnprintf(buf+n, len-n, "dev/vend:%x\n", cfg); + n += scnprintf(buf+n, len-n, "dev/vend:%08x\n", cfg); + printk(KERN_WARNING "EEH: PCI device/vendor: %08x\n", cfg); + rtas_read_config(pdn, PCI_COMMAND, 4, &cfg); n += scnprintf(buf+n, len-n, "cmd/stat:%x\n", cfg); + printk(KERN_WARNING "EEH: PCI cmd/status register: %08x\n", cfg); + + /* Dump out the PCI-X command and status regs */ + cap = pci_find_capability(pdn->pcidev, PCI_CAP_ID_PCIX); + if (cap) { + rtas_read_config(pdn, cap, 4, &cfg); + n += scnprintf(buf+n, len-n, "pcix-cmd:%x\n", cfg); + printk(KERN_WARNING "EEH: PCI-X cmd: %08x\n", cfg); + + rtas_read_config(pdn, cap+4, 4, &cfg); + n += scnprintf(buf+n, len-n, "pcix-stat:%x\n", cfg); + printk(KERN_WARNING "EEH: PCI-X status: %08x\n", cfg); + } + + /* If PCI-E capable, dump PCI-E cap 10, and the AER */ + cap = pci_find_capability(pdn->pcidev, PCI_CAP_ID_EXP); + if (cap) { + n += scnprintf(buf+n, len-n, "pci-e cap10:\n"); + printk(KERN_WARNING + "EEH: PCI-E capabilities and status follow:\n"); + + for (i=0; i<=8; i++) { + rtas_read_config(pdn, cap+4*i, 4, &cfg); + n += scnprintf(buf+n, len-n, "%02x:%x\n", 4*i, cfg); + printk(KERN_WARNING "EEH: PCI-E %02x: %08x\n", i, cfg); + } + cap = pci_find_ext_capability(pdn->pcidev,PCI_EXT_CAP_ID_ERR); + if (cap) { + n += scnprintf(buf+n, len-n, "pci-e AER:\n"); + printk(KERN_WARNING + "EEH: PCI-E AER capability register set follows:\n"); + + for (i=0; i<14; i++) { + rtas_read_config(pdn, cap+4*i, 4, &cfg); + n += scnprintf(buf+n, len-n, "%02x:%x\n", 4*i, cfg); + printk(KERN_WARNING "EEH: PCI-E AER %02x: %08x\n", i, cfg); + } + } + } return n; } -- 2.20.1