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authorKeith Busch <keith.busch@intel.com>2017-02-03 16:46:12 -0500
committerBjorn Helgaas <bhelgaas@google.com>2017-02-10 14:35:02 -0600
commit87b336d003d47876e376d943be3c9d35152f3b86 (patch)
tree5e0081e8034ad7bbc7825900cf8bf6707805a5ec /drivers/pci/pcie
parent7ce7d89f48834cefece7804d38fc5d85382edf77 (diff)
downloadlinux-87b336d003d47876e376d943be3c9d35152f3b86.tar.bz2
PCI/DPC: Decode extended reasons
Decode the currently defined extended event reasons rather than just using the generic "extended" explanation. Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pcie')
-rw-r--r--drivers/pci/pcie/pcie-dpc.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/pci/pcie/pcie-dpc.c b/drivers/pci/pcie/pcie-dpc.c
index 9811b14d9ad8..5a261fd4f03d 100644
--- a/drivers/pci/pcie/pcie-dpc.c
+++ b/drivers/pci/pcie/pcie-dpc.c
@@ -73,11 +73,15 @@ static irqreturn_t dpc_irq(int irq, void *context)
if (status & PCI_EXP_DPC_STATUS_TRIGGER) {
u16 reason = (status >> 1) & 0x3;
+ u16 ext_reason = (status >> 5) & 0x3;
- dev_warn(&dpc->dev->device, "DPC %s triggered, remove downstream devices\n",
+ dev_warn(&dpc->dev->device, "DPC %s detected, remove downstream devices\n",
(reason == 0) ? "unmasked uncorrectable error" :
(reason == 1) ? "ERR_NONFATAL" :
- (reason == 2) ? "ERR_FATAL" : "extended error");
+ (reason == 2) ? "ERR_FATAL" :
+ (ext_reason == 0) ? "RP PIO error" :
+ (ext_reason == 1) ? "software trigger" :
+ "reserved error");
schedule_work(&dpc->work);
}
return IRQ_HANDLED;