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d0b0885316
Add support for reading the PCI function measurement block counters provided by the hypervisor. Add two s390 debug features, one for critical errors and one for tracing and provide wrappers to log data. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/*
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* Copyright IBM Corp. 2012
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*
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* Author(s):
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* Jan Glauber <jang@linux.vnet.ibm.com>
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*/
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#define COMPONENT "zPCI"
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#define pr_fmt(fmt) COMPONENT ": " fmt
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#include <linux/kernel.h>
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#include <linux/pci.h>
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/* Content Code Description for PCI Function Error */
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struct zpci_ccdf_err {
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u32 reserved1;
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u32 fh; /* function handle */
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u32 fid; /* function id */
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u32 ett : 4; /* expected table type */
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u32 mvn : 12; /* MSI vector number */
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u32 dmaas : 8; /* DMA address space */
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u32 : 6;
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u32 q : 1; /* event qualifier */
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u32 rw : 1; /* read/write */
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u64 faddr; /* failing address */
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u32 reserved3;
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u16 reserved4;
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u16 pec; /* PCI event code */
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} __packed;
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/* Content Code Description for PCI Function Availability */
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struct zpci_ccdf_avail {
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u32 reserved1;
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u32 fh; /* function handle */
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u32 fid; /* function id */
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u32 reserved2;
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u32 reserved3;
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u32 reserved4;
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u32 reserved5;
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u16 reserved6;
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u16 pec; /* PCI event code */
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} __packed;
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static void zpci_event_log_err(struct zpci_ccdf_err *ccdf)
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{
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struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid);
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zpci_err("SEI error CCD:\n");
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zpci_err_hex(ccdf, sizeof(*ccdf));
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dev_err(&zdev->pdev->dev, "event code: 0x%x\n", ccdf->pec);
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}
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static void zpci_event_log_avail(struct zpci_ccdf_avail *ccdf)
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{
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struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid);
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pr_err("%s%s: availability event: fh: 0x%x fid: 0x%x event code: 0x%x reason:",
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(zdev) ? dev_driver_string(&zdev->pdev->dev) : "?",
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(zdev) ? dev_name(&zdev->pdev->dev) : "?",
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ccdf->fh, ccdf->fid, ccdf->pec);
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print_hex_dump(KERN_CONT, "ccdf", DUMP_PREFIX_OFFSET,
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16, 1, ccdf, sizeof(*ccdf), false);
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switch (ccdf->pec) {
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case 0x0301:
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zpci_enable_device(zdev);
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break;
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case 0x0302:
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clp_add_pci_device(ccdf->fid, ccdf->fh, 0);
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break;
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case 0x0306:
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clp_find_pci_devices();
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break;
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default:
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break;
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}
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}
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void zpci_event_error(void *data)
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{
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struct zpci_ccdf_err *ccdf = data;
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struct zpci_dev *zdev;
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zpci_event_log_err(ccdf);
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zdev = get_zdev_by_fid(ccdf->fid);
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if (!zdev) {
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pr_err("Error event for unknown fid: %x", ccdf->fid);
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return;
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}
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}
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void zpci_event_availability(void *data)
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{
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zpci_event_log_avail(data);
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}
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