drivers/scsi/qla4xxx/ql4_attr.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2011 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7
   8 #include "ql4_def.h"
   9 #include "ql4_glbl.h"
  10 #include "ql4_dbg.h"
  11
  12 static ssize_t
  13 qla4_8xxx_sysfs_read_fw_dump(struct file *filep, struct kobject *kobj,
  14                              struct bin_attribute *ba, char *buf, loff_t off,
  15                              size_t count)
  16 {
  17         struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
  18                                                struct device, kobj)));
  19
  20         if (!is_qla8022(ha))
  21                 return -EINVAL;
  22
  23         if (!test_bit(AF_82XX_DUMP_READING, &ha->flags))
  24                 return 0;
  25
  26         return memory_read_from_buffer(buf, count, &off, ha->fw_dump,
  27                                        ha->fw_dump_size);
  28 }
  29
  30 static ssize_t
  31 qla4_8xxx_sysfs_write_fw_dump(struct file *filep, struct kobject *kobj,
  32                               struct bin_attribute *ba, char *buf, loff_t off,
  33                               size_t count)
  34 {
  35         struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
  36                                                struct device, kobj)));
  37         uint32_t dev_state;
  38         long reading;
  39         int ret = 0;
  40
  41         if (!is_qla8022(ha))
  42                 return -EINVAL;
  43
  44         if (off != 0)
  45                 return ret;
  46
  47         buf[1] = 0;
  48         ret = kstrtol(buf, 10, &reading);
  49         if (ret) {
  50                 ql4_printk(KERN_ERR, ha, "%s: Invalid input. Return err %d\n",
  51                            __func__, ret);
  52                 return ret;
  53         }
  54
  55         switch (reading) {
  56         case 0:
  57                 /* clear dump collection flags */
  58                 if (test_and_clear_bit(AF_82XX_DUMP_READING, &ha->flags)) {
  59                         clear_bit(AF_82XX_FW_DUMPED, &ha->flags);
  60                         /* Reload minidump template */
  61                         qla4xxx_alloc_fw_dump(ha);
  62                         DEBUG2(ql4_printk(KERN_INFO, ha,
  63                                           "Firmware template reloaded\n"));
  64                 }
  65                 break;
  66         case 1:
  67                 /* Set flag to read dump */
  68                 if (test_bit(AF_82XX_FW_DUMPED, &ha->flags) &&
  69                     !test_bit(AF_82XX_DUMP_READING, &ha->flags)) {
  70                         set_bit(AF_82XX_DUMP_READING, &ha->flags);
  71                         DEBUG2(ql4_printk(KERN_INFO, ha,
  72                                           "Raw firmware dump ready for read on (%ld).\n",
  73                                           ha->host_no));
  74                 }
  75                 break;
  76         case 2:
  77                 /* Reset HBA */
  78                 qla4_82xx_idc_lock(ha);
  79                 dev_state = qla4_82xx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
  80                 if (dev_state == QLA82XX_DEV_READY) {
  81                         ql4_printk(KERN_INFO, ha,
  82                                    "%s: Setting Need reset, reset_owner is 0x%x.\n",
  83                                    __func__, ha->func_num);
  84                         qla4_82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
  85                                         QLA82XX_DEV_NEED_RESET);
  86                         set_bit(AF_82XX_RST_OWNER, &ha->flags);
  87                 } else
  88                         ql4_printk(KERN_INFO, ha,
  89                                    "%s: Reset not performed as device state is 0x%x\n",
  90                                    __func__, dev_state);
  91
  92                 qla4_82xx_idc_unlock(ha);
  93                 break;
  94         default:
  95                 /* do nothing */
  96                 break;
  97         }
  98
  99         return count;
 100 }
 101
 102 static struct bin_attribute sysfs_fw_dump_attr = {
 103         .attr = {
 104                 .name = "fw_dump",
 105                 .mode = S_IRUSR | S_IWUSR,
 106         },
 107         .size = 0,
 108         .read = qla4_8xxx_sysfs_read_fw_dump,
 109         .write = qla4_8xxx_sysfs_write_fw_dump,
 110 };
 111
 112 static struct sysfs_entry {
 113         char *name;
 114         struct bin_attribute *attr;
 115 } bin_file_entries[] = {
 116         { "fw_dump", &sysfs_fw_dump_attr },
 117         { NULL },
 118 };
 119
 120 void qla4_8xxx_alloc_sysfs_attr(struct scsi_qla_host *ha)
 121 {
 122         struct Scsi_Host *host = ha->host;
 123         struct sysfs_entry *iter;
 124         int ret;
 125
 126         for (iter = bin_file_entries; iter->name; iter++) {
 127                 ret = sysfs_create_bin_file(&host->shost_gendev.kobj,
 128                                             iter->attr);
 129                 if (ret)
 130                         ql4_printk(KERN_ERR, ha,
 131                                    "Unable to create sysfs %s binary attribute (%d).\n",
 132                                    iter->name, ret);
 133         }
 134 }
 135
 136 void qla4_8xxx_free_sysfs_attr(struct scsi_qla_host *ha)
 137 {
 138         struct Scsi_Host *host = ha->host;
 139         struct sysfs_entry *iter;
 140
 141         for (iter = bin_file_entries; iter->name; iter++)
 142                 sysfs_remove_bin_file(&host->shost_gendev.kobj,
 143                                       iter->attr);
 144 }
 145
 146 /* Scsi_Host attributes. */
 147 static ssize_t
 148 qla4xxx_fw_version_show(struct device *dev,
 149                         struct device_attribute *attr, char *buf)
 150 {
 151         struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 152
 153         if (is_qla8022(ha))
 154                 return snprintf(buf, PAGE_SIZE, "%d.%02d.%02d (%x)\n",
 155                                 ha->firmware_version[0],
 156                                 ha->firmware_version[1],
 157                                 ha->patch_number, ha->build_number);
 158         else
 159                 return snprintf(buf, PAGE_SIZE, "%d.%02d.%02d.%02d\n",
 160                                 ha->firmware_version[0],
 161                                 ha->firmware_version[1],
 162                                 ha->patch_number, ha->build_number);
 163 }
 164
 165 static ssize_t
 166 qla4xxx_serial_num_show(struct device *dev, struct device_attribute *attr,
 167                         char *buf)
 168 {
 169         struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 170         return snprintf(buf, PAGE_SIZE, "%s\n", ha->serial_number);
 171 }
 172
 173 static ssize_t
 174 qla4xxx_iscsi_version_show(struct device *dev, struct device_attribute *attr,
 175                            char *buf)
 176 {
 177         struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 178         return snprintf(buf, PAGE_SIZE, "%d.%02d\n", ha->iscsi_major,
 179                         ha->iscsi_minor);
 180 }
 181
 182 static ssize_t
 183 qla4xxx_optrom_version_show(struct device *dev, struct device_attribute *attr,
 184                             char *buf)
 185 {
 186         struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 187         return snprintf(buf, PAGE_SIZE, "%d.%02d.%02d.%02d\n",
 188                         ha->bootload_major, ha->bootload_minor,
 189                         ha->bootload_patch, ha->bootload_build);
 190 }
 191
 192 static ssize_t
 193 qla4xxx_board_id_show(struct device *dev, struct device_attribute *attr,
 194                       char *buf)
 195 {
 196         struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 197         return snprintf(buf, PAGE_SIZE, "0x%08X\n", ha->board_id);
 198 }
 199
 200 static ssize_t
 201 qla4xxx_fw_state_show(struct device *dev, struct device_attribute *attr,
 202                       char *buf)
 203 {
 204         struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 205
 206         qla4xxx_get_firmware_state(ha);
 207         return snprintf(buf, PAGE_SIZE, "0x%08X%8X\n", ha->firmware_state,
 208                         ha->addl_fw_state);
 209 }
 210
 211 static ssize_t
 212 qla4xxx_phy_port_cnt_show(struct device *dev, struct device_attribute *attr,
 213                       char *buf)
 214 {
 215         struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 216
 217         if (!is_qla8022(ha))
 218                 return -ENOSYS;
 219
 220         return snprintf(buf, PAGE_SIZE, "0x%04X\n", ha->phy_port_cnt);
 221 }
 222
 223 static ssize_t
 224 qla4xxx_phy_port_num_show(struct device *dev, struct device_attribute *attr,
 225                       char *buf)
 226 {
 227         struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 228
 229         if (!is_qla8022(ha))
 230                 return -ENOSYS;
 231
 232         return snprintf(buf, PAGE_SIZE, "0x%04X\n", ha->phy_port_num);
 233 }
 234
 235 static ssize_t
 236 qla4xxx_iscsi_func_cnt_show(struct device *dev, struct device_attribute *attr,
 237                       char *buf)
 238 {
 239         struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 240
 241         if (!is_qla8022(ha))
 242                 return -ENOSYS;
 243
 244         return snprintf(buf, PAGE_SIZE, "0x%04X\n", ha->iscsi_pci_func_cnt);
 245 }
 246
 247 static ssize_t
 248 qla4xxx_hba_model_show(struct device *dev, struct device_attribute *attr,
 249                        char *buf)
 250 {
 251         struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 252
 253         return snprintf(buf, PAGE_SIZE, "%s\n", ha->model_name);
 254 }
 255
 256 static DEVICE_ATTR(fw_version, S_IRUGO, qla4xxx_fw_version_show, NULL);
 257 static DEVICE_ATTR(serial_num, S_IRUGO, qla4xxx_serial_num_show, NULL);
 258 static DEVICE_ATTR(iscsi_version, S_IRUGO, qla4xxx_iscsi_version_show, NULL);
 259 static DEVICE_ATTR(optrom_version, S_IRUGO, qla4xxx_optrom_version_show, NULL);
 260 static DEVICE_ATTR(board_id, S_IRUGO, qla4xxx_board_id_show, NULL);
 261 static DEVICE_ATTR(fw_state, S_IRUGO, qla4xxx_fw_state_show, NULL);
 262 static DEVICE_ATTR(phy_port_cnt, S_IRUGO, qla4xxx_phy_port_cnt_show, NULL);
 263 static DEVICE_ATTR(phy_port_num, S_IRUGO, qla4xxx_phy_port_num_show, NULL);
 264 static DEVICE_ATTR(iscsi_func_cnt, S_IRUGO, qla4xxx_iscsi_func_cnt_show, NULL);
 265 static DEVICE_ATTR(hba_model, S_IRUGO, qla4xxx_hba_model_show, NULL);
 266
 267 struct device_attribute *qla4xxx_host_attrs[] = {
 268         &dev_attr_fw_version,
 269         &dev_attr_serial_num,
 270         &dev_attr_iscsi_version,
 271         &dev_attr_optrom_version,
 272         &dev_attr_board_id,
 273         &dev_attr_fw_state,
 274         &dev_attr_phy_port_cnt,
 275         &dev_attr_phy_port_num,
 276         &dev_attr_iscsi_func_cnt,
 277         &dev_attr_hba_model,
 278         NULL,
 279 };