diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2018-01-16 17:37:50 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <helgaas@kernel.org> | 2018-01-30 15:26:25 -0600 |
| commit | 01060e3d4e423146ecf9d308814e16a357671ddf (patch) | |
| tree | a87a20d4b9558000bbd59a474121a13c1b3b3544 | |
| parent | 716f0f732ff9eedcf31ff887a4ac7be3ac9bc1c0 (diff) | |
PCI/DPC: Add and use DPC Status register field definitions
Add definitions for DPC Status register fields and use them in the code.
No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sinan Kaya <okaya@codeaurora.org>
| -rw-r--r-- | drivers/pci/pcie/pcie-dpc.c | 4 | ||||
| -rw-r--r-- | include/uapi/linux/pci_regs.h | 2 |
2 files changed, 4 insertions, 2 deletions
diff --git a/drivers/pci/pcie/pcie-dpc.c b/drivers/pci/pcie/pcie-dpc.c index 0f4eb6111ab4..7eb9bc7d4bfd 100644 --- a/drivers/pci/pcie/pcie-dpc.c +++ b/drivers/pci/pcie/pcie-dpc.c @@ -211,8 +211,8 @@ static irqreturn_t dpc_irq(int irq, void *context) dev_info(dev, "DPC containment event, status:%#06x source:%#06x\n", status, source); - reason = (status >> 1) & 0x3; - ext_reason = (status >> 5) & 0x3; + reason = (status & PCI_EXP_DPC_STATUS_TRIGGER_RSN) >> 1; + ext_reason = (status & PCI_EXP_DPC_STATUS_TRIGGER_RSN_EXT) >> 5; dev_warn(dev, "DPC %s detected, remove downstream devices\n", (reason == 0) ? "unmasked uncorrectable error" : diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h index 70c2b2ade048..970a0dc535c4 100644 --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -979,8 +979,10 @@ #define PCI_EXP_DPC_STATUS 8 /* DPC Status */ #define PCI_EXP_DPC_STATUS_TRIGGER 0x01 /* Trigger Status */ +#define PCI_EXP_DPC_STATUS_TRIGGER_RSN 0x06 /* Trigger Reason */ #define PCI_EXP_DPC_STATUS_INTERRUPT 0x08 /* Interrupt Status */ #define PCI_EXP_DPC_RP_BUSY 0x10 /* Root Port Busy */ +#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_EXT 0x60 /* Trig Reason Extension */ #define PCI_EXP_DPC_SOURCE_ID 10 /* DPC Source Identifier */ |