linux/drivers/scsi/qla4xxx/ql4_attr.c
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   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
  12static ssize_t
  13qla4_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_qla40XX(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
  30static ssize_t
  31qla4_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_qla40XX(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 and collect FW dump */
  78                ha->isp_ops->idc_lock(ha);
  79                dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
  80                if (dev_state == QLA8XXX_DEV_READY) {
  81                        ql4_printk(KERN_INFO, ha, "%s: Setting Need reset\n",
  82                                   __func__);
  83                        qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
  84                                            QLA8XXX_DEV_NEED_RESET);
  85                        if (is_qla8022(ha) ||
  86                            (is_qla8032(ha) &&
  87                             qla4_83xx_can_perform_reset(ha))) {
  88                                set_bit(AF_8XXX_RST_OWNER, &ha->flags);
  89                                set_bit(AF_FW_RECOVERY, &ha->flags);
  90                                ql4_printk(KERN_INFO, ha, "%s: Reset owner is 0x%x\n",
  91                                           __func__, ha->func_num);
  92                        }
  93                } else
  94                        ql4_printk(KERN_INFO, ha,
  95                                   "%s: Reset not performed as device state is 0x%x\n",
  96                                   __func__, dev_state);
  97
  98                ha->isp_ops->idc_unlock(ha);
  99                break;
 100        default:
 101                /* do nothing */
 102                break;
 103        }
 104
 105        return count;
 106}
 107
 108static struct bin_attribute sysfs_fw_dump_attr = {
 109        .attr = {
 110                .name = "fw_dump",
 111                .mode = S_IRUSR | S_IWUSR,
 112        },
 113        .size = 0,
 114        .read = qla4_8xxx_sysfs_read_fw_dump,
 115        .write = qla4_8xxx_sysfs_write_fw_dump,
 116};
 117
 118static struct sysfs_entry {
 119        char *name;
 120        struct bin_attribute *attr;
 121} bin_file_entries[] = {
 122        { "fw_dump", &sysfs_fw_dump_attr },
 123        { NULL },
 124};
 125
 126void qla4_8xxx_alloc_sysfs_attr(struct scsi_qla_host *ha)
 127{
 128        struct Scsi_Host *host = ha->host;
 129        struct sysfs_entry *iter;
 130        int ret;
 131
 132        for (iter = bin_file_entries; iter->name; iter++) {
 133                ret = sysfs_create_bin_file(&host->shost_gendev.kobj,
 134                                            iter->attr);
 135                if (ret)
 136                        ql4_printk(KERN_ERR, ha,
 137                                   "Unable to create sysfs %s binary attribute (%d).\n",
 138                                   iter->name, ret);
 139        }
 140}
 141
 142void qla4_8xxx_free_sysfs_attr(struct scsi_qla_host *ha)
 143{
 144        struct Scsi_Host *host = ha->host;
 145        struct sysfs_entry *iter;
 146
 147        for (iter = bin_file_entries; iter->name; iter++)
 148                sysfs_remove_bin_file(&host->shost_gendev.kobj,
 149                                      iter->attr);
 150}
 151
 152/* Scsi_Host attributes. */
 153static ssize_t
 154qla4xxx_fw_version_show(struct device *dev,
 155                        struct device_attribute *attr, char *buf)
 156{
 157        struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 158
 159        if (is_qla80XX(ha))
 160                return snprintf(buf, PAGE_SIZE, "%d.%02d.%02d (%x)\n",
 161                                ha->firmware_version[0],
 162                                ha->firmware_version[1],
 163                                ha->patch_number, ha->build_number);
 164        else
 165                return snprintf(buf, PAGE_SIZE, "%d.%02d.%02d.%02d\n",
 166                                ha->firmware_version[0],
 167                                ha->firmware_version[1],
 168                                ha->patch_number, ha->build_number);
 169}
 170
 171static ssize_t
 172qla4xxx_serial_num_show(struct device *dev, struct device_attribute *attr,
 173                        char *buf)
 174{
 175        struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 176        return snprintf(buf, PAGE_SIZE, "%s\n", ha->serial_number);
 177}
 178
 179static ssize_t
 180qla4xxx_iscsi_version_show(struct device *dev, struct device_attribute *attr,
 181                           char *buf)
 182{
 183        struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 184        return snprintf(buf, PAGE_SIZE, "%d.%02d\n", ha->iscsi_major,
 185                        ha->iscsi_minor);
 186}
 187
 188static ssize_t
 189qla4xxx_optrom_version_show(struct device *dev, struct device_attribute *attr,
 190                            char *buf)
 191{
 192        struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 193        return snprintf(buf, PAGE_SIZE, "%d.%02d.%02d.%02d\n",
 194                        ha->bootload_major, ha->bootload_minor,
 195                        ha->bootload_patch, ha->bootload_build);
 196}
 197
 198static ssize_t
 199qla4xxx_board_id_show(struct device *dev, struct device_attribute *attr,
 200                      char *buf)
 201{
 202        struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 203        return snprintf(buf, PAGE_SIZE, "0x%08X\n", ha->board_id);
 204}
 205
 206static ssize_t
 207qla4xxx_fw_state_show(struct device *dev, struct device_attribute *attr,
 208                      char *buf)
 209{
 210        struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 211
 212        qla4xxx_get_firmware_state(ha);
 213        return snprintf(buf, PAGE_SIZE, "0x%08X%8X\n", ha->firmware_state,
 214                        ha->addl_fw_state);
 215}
 216
 217static ssize_t
 218qla4xxx_phy_port_cnt_show(struct device *dev, struct device_attribute *attr,
 219                      char *buf)
 220{
 221        struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 222
 223        if (is_qla40XX(ha))
 224                return -ENOSYS;
 225
 226        return snprintf(buf, PAGE_SIZE, "0x%04X\n", ha->phy_port_cnt);
 227}
 228
 229static ssize_t
 230qla4xxx_phy_port_num_show(struct device *dev, struct device_attribute *attr,
 231                      char *buf)
 232{
 233        struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 234
 235        if (is_qla40XX(ha))
 236                return -ENOSYS;
 237
 238        return snprintf(buf, PAGE_SIZE, "0x%04X\n", ha->phy_port_num);
 239}
 240
 241static ssize_t
 242qla4xxx_iscsi_func_cnt_show(struct device *dev, struct device_attribute *attr,
 243                      char *buf)
 244{
 245        struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 246
 247        if (is_qla40XX(ha))
 248                return -ENOSYS;
 249
 250        return snprintf(buf, PAGE_SIZE, "0x%04X\n", ha->iscsi_pci_func_cnt);
 251}
 252
 253static ssize_t
 254qla4xxx_hba_model_show(struct device *dev, struct device_attribute *attr,
 255                       char *buf)
 256{
 257        struct scsi_qla_host *ha = to_qla_host(class_to_shost(dev));
 258
 259        return snprintf(buf, PAGE_SIZE, "%s\n", ha->model_name);
 260}
 261
 262static DEVICE_ATTR(fw_version, S_IRUGO, qla4xxx_fw_version_show, NULL);
 263static DEVICE_ATTR(serial_num, S_IRUGO, qla4xxx_serial_num_show, NULL);
 264static DEVICE_ATTR(iscsi_version, S_IRUGO, qla4xxx_iscsi_version_show, NULL);
 265static DEVICE_ATTR(optrom_version, S_IRUGO, qla4xxx_optrom_version_show, NULL);
 266static DEVICE_ATTR(board_id, S_IRUGO, qla4xxx_board_id_show, NULL);
 267static DEVICE_ATTR(fw_state, S_IRUGO, qla4xxx_fw_state_show, NULL);
 268static DEVICE_ATTR(phy_port_cnt, S_IRUGO, qla4xxx_phy_port_cnt_show, NULL);
 269static DEVICE_ATTR(phy_port_num, S_IRUGO, qla4xxx_phy_port_num_show, NULL);
 270static DEVICE_ATTR(iscsi_func_cnt, S_IRUGO, qla4xxx_iscsi_func_cnt_show, NULL);
 271static DEVICE_ATTR(hba_model, S_IRUGO, qla4xxx_hba_model_show, NULL);
 272
 273struct device_attribute *qla4xxx_host_attrs[] = {
 274        &dev_attr_fw_version,
 275        &dev_attr_serial_num,
 276        &dev_attr_iscsi_version,
 277        &dev_attr_optrom_version,
 278        &dev_attr_board_id,
 279        &dev_attr_fw_state,
 280        &dev_attr_phy_port_cnt,
 281        &dev_attr_phy_port_num,
 282        &dev_attr_iscsi_func_cnt,
 283        &dev_attr_hba_model,
 284        NULL,
 285};
 286