drivers/scsi/qedf/qedf_dbg.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  QLogic FCoE Offload Driver
   4  *  Copyright (c) 2016-2018 Cavium Inc.
   5  */
   6 #include "qedf_dbg.h"
   7 #include <linux/vmalloc.h>
   8
   9 void
  10 qedf_dbg_err(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
  11               const char *fmt, ...)
  12 {
  13         va_list va;
  14         struct va_format vaf;
  15
  16         va_start(va, fmt);
  17
  18         vaf.fmt = fmt;
  19         vaf.va = &va;
  20
  21         if (likely(qedf) && likely(qedf->pdev))
  22                 pr_err("[%s]:[%s:%d]:%d: %pV", dev_name(&(qedf->pdev->dev)),
  23                         func, line, qedf->host_no, &vaf);
  24         else
  25                 pr_err("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf);
  26
  27         va_end(va);
  28 }
  29
  30 void
  31 qedf_dbg_warn(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
  32                const char *fmt, ...)
  33 {
  34         va_list va;
  35         struct va_format vaf;
  36
  37         va_start(va, fmt);
  38
  39         vaf.fmt = fmt;
  40         vaf.va = &va;
  41
  42         if (!(qedf_debug & QEDF_LOG_WARN))
  43                 goto ret;
  44
  45         if (likely(qedf) && likely(qedf->pdev))
  46                 pr_warn("[%s]:[%s:%d]:%d: %pV", dev_name(&(qedf->pdev->dev)),
  47                         func, line, qedf->host_no, &vaf);
  48         else
  49                 pr_warn("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf);
  50
  51 ret:
  52         va_end(va);
  53 }
  54
  55 void
  56 qedf_dbg_notice(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
  57                  const char *fmt, ...)
  58 {
  59         va_list va;
  60         struct va_format vaf;
  61
  62         va_start(va, fmt);
  63
  64         vaf.fmt = fmt;
  65         vaf.va = &va;
  66
  67         if (!(qedf_debug & QEDF_LOG_NOTICE))
  68                 goto ret;
  69
  70         if (likely(qedf) && likely(qedf->pdev))
  71                 pr_notice("[%s]:[%s:%d]:%d: %pV",
  72                           dev_name(&(qedf->pdev->dev)), func, line,
  73                           qedf->host_no, &vaf);
  74         else
  75                 pr_notice("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf);
  76
  77 ret:
  78         va_end(va);
  79 }
  80
  81 void
  82 qedf_dbg_info(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
  83                u32 level, const char *fmt, ...)
  84 {
  85         va_list va;
  86         struct va_format vaf;
  87
  88         va_start(va, fmt);
  89
  90         vaf.fmt = fmt;
  91         vaf.va = &va;
  92
  93         if (!(qedf_debug & level))
  94                 goto ret;
  95
  96         if (likely(qedf) && likely(qedf->pdev))
  97                 pr_info("[%s]:[%s:%d]:%d: %pV", dev_name(&(qedf->pdev->dev)),
  98                         func, line, qedf->host_no, &vaf);
  99         else
 100                 pr_info("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf);
 101
 102 ret:
 103         va_end(va);
 104 }
 105
 106 int
 107 qedf_alloc_grc_dump_buf(u8 **buf, uint32_t len)
 108 {
 109                 *buf = vmalloc(len);
 110                 if (!(*buf))
 111                         return -ENOMEM;
 112
 113                 memset(*buf, 0, len);
 114                 return 0;
 115 }
 116
 117 void
 118 qedf_free_grc_dump_buf(uint8_t **buf)
 119 {
 120                 vfree(*buf);
 121                 *buf = NULL;
 122 }
 123
 124 int
 125 qedf_get_grc_dump(struct qed_dev *cdev, const struct qed_common_ops *common,
 126                    u8 **buf, uint32_t *grcsize)
 127 {
 128         if (!*buf)
 129                 return -EINVAL;
 130
 131         return common->dbg_all_data(cdev, *buf);
 132 }
 133
 134 void
 135 qedf_uevent_emit(struct Scsi_Host *shost, u32 code, char *msg)
 136 {
 137         char event_string[40];
 138         char *envp[] = {event_string, NULL};
 139
 140         memset(event_string, 0, sizeof(event_string));
 141         switch (code) {
 142         case QEDF_UEVENT_CODE_GRCDUMP:
 143                 if (msg)
 144                         strscpy(event_string, msg, sizeof(event_string));
 145                 else
 146                         sprintf(event_string, "GRCDUMP=%u", shost->host_no);
 147                 break;
 148         default:
 149                 /* do nothing */
 150                 break;
 151         }
 152
 153         kobject_uevent_env(&shost->shost_gendev.kobj, KOBJ_CHANGE, envp);
 154 }
 155
 156 int
 157 qedf_create_sysfs_attr(struct Scsi_Host *shost, struct sysfs_bin_attrs *iter)
 158 {
 159         int ret = 0;
 160
 161         for (; iter->name; iter++) {
 162                 ret = sysfs_create_bin_file(&shost->shost_gendev.kobj,
 163                                             iter->attr);
 164                 if (ret)
 165                         pr_err("Unable to create sysfs %s attr, err(%d).\n",
 166                                iter->name, ret);
 167         }
 168         return ret;
 169 }
 170
 171 void
 172 qedf_remove_sysfs_attr(struct Scsi_Host *shost, struct sysfs_bin_attrs *iter)
 173 {
 174         for (; iter->name; iter++)
 175                 sysfs_remove_bin_file(&shost->shost_gendev.kobj, iter->attr);
 176 }