linux-kernel - [PATCH 1/2] PCI: Add PCI_EXP_DPC

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Message-Id: <20231013112004.4239-2-ilpo.jarvinen@linux.intel.com>
Date:   Fri, 13 Oct 2023 14:20:03 +0300
From:   Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To:     linux-pci@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>
Cc:     linux-kernel@...r.kernel.org,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 1/2] PCI: Add PCI_EXP_DPC_* field details

Add PCI_EXP_DPC_RP_PIO_FEP and PCI_EXP_DPC_STATUS_TRIGGER_RSN_*
to be able to replace literals with them.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
 include/uapi/linux/pci_regs.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index e5f558d96493..ce4512147ee7 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -1042,9 +1042,16 @@
 #define PCI_EXP_DPC_STATUS		0x08	/* DPC Status */
 #define  PCI_EXP_DPC_STATUS_TRIGGER	    0x0001 /* Trigger Status */
 #define  PCI_EXP_DPC_STATUS_TRIGGER_RSN	    0x0006 /* Trigger Reason */
+#define  PCI_EXP_DPC_STATUS_TRIGGER_RSN_UNCOR  0x0000 /* DPC due to unmasked uncorrectable error */
+#define  PCI_EXP_DPC_STATUS_TRIGGER_RSN_NFE    0x0002 /* DPC due to receiving ERR_NONFATAL */
+#define  PCI_EXP_DPC_STATUS_TRIGGER_RSN_FE     0x0004 /* DPC due to receiving ERR_FATAL */
+#define  PCI_EXP_DPC_STATUS_TRIGGER_RSN_IN_EXT 0x0006 /* Reason in Trig Reason Extension field */
 #define  PCI_EXP_DPC_STATUS_INTERRUPT	    0x0008 /* Interrupt Status */
 #define  PCI_EXP_DPC_RP_BUSY		    0x0010 /* Root Port Busy */
 #define  PCI_EXP_DPC_STATUS_TRIGGER_RSN_EXT 0x0060 /* Trig Reason Extension */
+#define  PCI_EXP_DPC_STATUS_TRIGGER_RSN_RP_PIO		0x0000	/* DPC due to RP PIO error */
+#define  PCI_EXP_DPC_STATUS_TRIGGER_RSN_SW_TRIGGER	0x0020	/* DPC due to DPC SW Trigger bit */
+#define  PCI_EXP_DPC_RP_PIO_FEP		    0x1f00 /* Root Port PIO First Error Pointer */
 
 #define PCI_EXP_DPC_SOURCE_ID		 0x0A	/* DPC Source Identifier */
 
-- 
2.30.2