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[5/6] PCI/DPC: Enable ERR_COR

Message ID 20180129213145.26068-5-keith.busch@intel.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Keith Busch Jan. 29, 2018, 9:31 p.m. UTC 
A DPC port may be configured to send ERR_COR message when the
triggered. This patch enables this feature so additional notification
of the event is possible.

Signed-off-by: Keith Busch <keith.busch@intel.com>
---
 drivers/pci/pcie/pcie-dpc.c   | 5 ++++-
 include/uapi/linux/pci_regs.h | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/pci/pcie/pcie-dpc.c b/drivers/pci/pcie/pcie-dpc.c
index 8c28840b6b91..bf9f7e0f3f90 100644
--- a/drivers/pci/pcie/pcie-dpc.c
+++ b/drivers/pci/pcie/pcie-dpc.c
@@ -255,7 +255,10 @@  static int dpc_probe(struct pcie_device *dev)
 		}
 	}
 
-	ctl = (ctl & 0xfff4) | PCI_EXP_DPC_CTL_EN_NONFATAL | PCI_EXP_DPC_CTL_INT_EN;
+	ctl = (ctl & 0xfff4) |
+		PCI_EXP_DPC_CTL_EN_NONFATAL |
+		PCI_EXP_DPC_CTL_INT_EN |
+		PCI_EXP_DPC_CTL_ERR_COR;
 	pci_write_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, ctl);
 
 	dev_info(device, "DPC error containment capabilities: Int Msg #%d, RPExt%c PoisonedTLP%c SwTrigger%c RP PIO Log %d, DL_ActiveErr%c\n",
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 0c79eac5e9b8..9cfcecdc3ec7 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -980,6 +980,7 @@ 
 #define PCI_EXP_DPC_CTL			6	/* DPC control */
 #define  PCI_EXP_DPC_CTL_EN_NONFATAL 	0x0002	/* Enable trigger on ERR_NONFATAL message */
 #define  PCI_EXP_DPC_CTL_INT_EN 	0x0008	/* DPC Interrupt Enable */
+#define  PCI_EXP_DPC_CTL_ERR_COR 	0x0010	/* DPC ERR_COR Enable */
 
 #define PCI_EXP_DPC_STATUS		8	/* DPC Status */
 #define  PCI_EXP_DPC_STATUS_TRIGGER	    0x0001 /* Trigger Status */