Merge remote-tracking branch 'regulator/topic/tps65910' into regulator-next
[deliverable/linux.git] / arch / s390 / pci / pci_event.c
1 /*
2 * Copyright IBM Corp. 2012
3 *
4 * Author(s):
5 * Jan Glauber <jang@linux.vnet.ibm.com>
6 */
7
8 #define COMPONENT "zPCI"
9 #define pr_fmt(fmt) COMPONENT ": " fmt
10
11 #include <linux/kernel.h>
12 #include <linux/pci.h>
13
14 /* Content Code Description for PCI Function Error */
15 struct zpci_ccdf_err {
16 u32 reserved1;
17 u32 fh; /* function handle */
18 u32 fid; /* function id */
19 u32 ett : 4; /* expected table type */
20 u32 mvn : 12; /* MSI vector number */
21 u32 dmaas : 8; /* DMA address space */
22 u32 : 6;
23 u32 q : 1; /* event qualifier */
24 u32 rw : 1; /* read/write */
25 u64 faddr; /* failing address */
26 u32 reserved3;
27 u16 reserved4;
28 u16 pec; /* PCI event code */
29 } __packed;
30
31 /* Content Code Description for PCI Function Availability */
32 struct zpci_ccdf_avail {
33 u32 reserved1;
34 u32 fh; /* function handle */
35 u32 fid; /* function id */
36 u32 reserved2;
37 u32 reserved3;
38 u32 reserved4;
39 u32 reserved5;
40 u16 reserved6;
41 u16 pec; /* PCI event code */
42 } __packed;
43
44 static void zpci_event_log_err(struct zpci_ccdf_err *ccdf)
45 {
46 struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid);
47
48 zpci_err("SEI error CCD:\n");
49 zpci_err_hex(ccdf, sizeof(*ccdf));
50 dev_err(&zdev->pdev->dev, "event code: 0x%x\n", ccdf->pec);
51 }
52
53 static void zpci_event_log_avail(struct zpci_ccdf_avail *ccdf)
54 {
55 struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid);
56
57 pr_err("%s%s: availability event: fh: 0x%x fid: 0x%x event code: 0x%x reason:",
58 (zdev) ? dev_driver_string(&zdev->pdev->dev) : "?",
59 (zdev) ? dev_name(&zdev->pdev->dev) : "?",
60 ccdf->fh, ccdf->fid, ccdf->pec);
61 print_hex_dump(KERN_CONT, "ccdf", DUMP_PREFIX_OFFSET,
62 16, 1, ccdf, sizeof(*ccdf), false);
63
64 switch (ccdf->pec) {
65 case 0x0301:
66 zpci_enable_device(zdev);
67 break;
68 case 0x0302:
69 clp_add_pci_device(ccdf->fid, ccdf->fh, 0);
70 break;
71 case 0x0306:
72 clp_rescan_pci_devices();
73 break;
74 default:
75 break;
76 }
77 }
78
79 void zpci_event_error(void *data)
80 {
81 struct zpci_ccdf_err *ccdf = data;
82 struct zpci_dev *zdev;
83
84 zpci_event_log_err(ccdf);
85 zdev = get_zdev_by_fid(ccdf->fid);
86 if (!zdev) {
87 pr_err("Error event for unknown fid: %x", ccdf->fid);
88 return;
89 }
90 }
91
92 void zpci_event_availability(void *data)
93 {
94 zpci_event_log_avail(data);
95 }
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