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PCI/DPC: Use defines with DPC reason fields

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Add new defines for DPC reason fields and use them instead of literals.

Link: https://lore.kernel.org/r/20231018113254.17616-7-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
[bhelgaas: shorten comments]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Ilpo Järvinen 2023-10-18 14:32:53 +03:00 committed by Bjorn Helgaas
parent f00e8dbded
commit 74f0b5ffe1
2 changed files with 23 additions and 10 deletions
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27
drivers/pci/pcie/dpc.c
View File

@ -274,20 +274,27 @@ void dpc_process_error(struct pci_dev *pdev)
pci_info(pdev, "containment event, status:%#06x source:%#06x\n",
status, source);
reason = (status & PCI_EXP_DPC_STATUS_TRIGGER_RSN) >> 1;
ext_reason = (status & PCI_EXP_DPC_STATUS_TRIGGER_RSN_EXT) >> 5;
reason = status & PCI_EXP_DPC_STATUS_TRIGGER_RSN;
ext_reason = status & PCI_EXP_DPC_STATUS_TRIGGER_RSN_EXT;
pci_warn(pdev, "%s detected\n",
(reason == 0) ? "unmasked uncorrectable error" :
(reason == 1) ? "ERR_NONFATAL" :
(reason == 2) ? "ERR_FATAL" :
(ext_reason == 0) ? "RP PIO error" :
(ext_reason == 1) ? "software trigger" :
"reserved error");
(reason == PCI_EXP_DPC_STATUS_TRIGGER_RSN_UNCOR) ?
"unmasked uncorrectable error" :
(reason == PCI_EXP_DPC_STATUS_TRIGGER_RSN_NFE) ?
"ERR_NONFATAL" :
(reason == PCI_EXP_DPC_STATUS_TRIGGER_RSN_FE) ?
"ERR_FATAL" :
(ext_reason == PCI_EXP_DPC_STATUS_TRIGGER_RSN_RP_PIO) ?
"RP PIO error" :
(ext_reason == PCI_EXP_DPC_STATUS_TRIGGER_RSN_SW_TRIGGER) ?
"software trigger" :
"reserved error");
/* show RP PIO error detail information */
if (pdev->dpc_rp_extensions && reason == 3 && ext_reason == 0)
if (pdev->dpc_rp_extensions &&
reason == PCI_EXP_DPC_STATUS_TRIGGER_RSN_IN_EXT &&
ext_reason == PCI_EXP_DPC_STATUS_TRIGGER_RSN_RP_PIO)
dpc_process_rp_pio_error(pdev);
else if (reason == 0 &&
else if (reason == PCI_EXP_DPC_STATUS_TRIGGER_RSN_UNCOR &&
dpc_get_aer_uncorrect_severity(pdev, &info) &&
aer_get_device_error_info(pdev, &info)) {
aer_print_error(pdev, &info);

6
include/uapi/linux/pci_regs.h
View File

@ -1044,9 +1044,15 @@
#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 /* Uncorrectable error */
#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_NFE 0x0002 /* Rcvd ERR_NONFATAL */
#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_FE 0x0004 /* Rcvd 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 /* RP PIO error */
#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_SW_TRIGGER 0x0020 /* DPC SW Trigger bit */
#define PCI_EXP_DPC_RP_PIO_FEP 0x1f00 /* RP PIO First Err Ptr */
#define PCI_EXP_DPC_SOURCE_ID 0x0A /* DPC Source Identifier */