1 /* 2 * QLOGIC LINUX SOFTWARE 3 * 4 * QLogic ISP2x00 device driver for Linux 2.6.x 5 * Copyright (C) 2003-2005 QLogic Corporation 6 * (www.qlogic.com) 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2, or (at your option) any 11 * later version. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 */ 19 #include "qla_def.h" 20 21 #include <linux/vmalloc.h> 22 #include <scsi/scsi_transport_fc.h> 23 24 /* SYSFS attributes --------------------------------------------------------- */ 25 26 static ssize_t 27 qla2x00_sysfs_read_fw_dump(struct kobject *kobj, char *buf, loff_t off, 28 size_t count) 29 { 30 struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, 31 struct device, kobj))); 32 33 if (ha->fw_dump_reading == 0) 34 return 0; 35 if (off > ha->fw_dump_buffer_len) 36 return 0; 37 if (off + count > ha->fw_dump_buffer_len) 38 count = ha->fw_dump_buffer_len - off; 39 40 memcpy(buf, &ha->fw_dump_buffer[off], count); 41 42 return (count); 43 } 44 45 static ssize_t 46 qla2x00_sysfs_write_fw_dump(struct kobject *kobj, char *buf, loff_t off, 47 size_t count) 48 { 49 struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, 50 struct device, kobj))); 51 int reading; 52 uint32_t dump_size; 53 54 if (off != 0) 55 return (0); 56 57 reading = simple_strtol(buf, NULL, 10); 58 switch (reading) { 59 case 0: 60 if (ha->fw_dump_reading == 1) { 61 qla_printk(KERN_INFO, ha, 62 "Firmware dump cleared on (%ld).\n", 63 ha->host_no); 64 65 vfree(ha->fw_dump_buffer); 66 free_pages((unsigned long)ha->fw_dump, 67 ha->fw_dump_order); 68 69 ha->fw_dump_reading = 0; 70 ha->fw_dump_buffer = NULL; 71 ha->fw_dump = NULL; 72 } 73 break; 74 case 1: 75 if (ha->fw_dump != NULL && !ha->fw_dump_reading) { 76 ha->fw_dump_reading = 1; 77 78 dump_size = FW_DUMP_SIZE_1M; 79 if (ha->fw_memory_size < 0x20000) 80 dump_size = FW_DUMP_SIZE_128K; 81 else if (ha->fw_memory_size < 0x80000) 82 dump_size = FW_DUMP_SIZE_512K; 83 ha->fw_dump_buffer = (char *)vmalloc(dump_size); 84 if (ha->fw_dump_buffer == NULL) { 85 qla_printk(KERN_WARNING, ha, 86 "Unable to allocate memory for firmware " 87 "dump buffer (%d).\n", dump_size); 88 89 ha->fw_dump_reading = 0; 90 return (count); 91 } 92 qla_printk(KERN_INFO, ha, 93 "Firmware dump ready for read on (%ld).\n", 94 ha->host_no); 95 memset(ha->fw_dump_buffer, 0, dump_size); 96 if (IS_QLA2100(ha) || IS_QLA2200(ha)) 97 qla2100_ascii_fw_dump(ha); 98 else 99 qla2300_ascii_fw_dump(ha); 100 ha->fw_dump_buffer_len = strlen(ha->fw_dump_buffer); 101 } 102 break; 103 } 104 return (count); 105 } 106 107 static struct bin_attribute sysfs_fw_dump_attr = { 108 .attr = { 109 .name = "fw_dump", 110 .mode = S_IRUSR | S_IWUSR, 111 .owner = THIS_MODULE, 112 }, 113 .size = 0, 114 .read = qla2x00_sysfs_read_fw_dump, 115 .write = qla2x00_sysfs_write_fw_dump, 116 }; 117 118 static ssize_t 119 qla2x00_sysfs_read_nvram(struct kobject *kobj, char *buf, loff_t off, 120 size_t count) 121 { 122 struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, 123 struct device, kobj))); 124 uint16_t *witer; 125 unsigned long flags; 126 uint16_t cnt; 127 128 if (!capable(CAP_SYS_ADMIN) || off != 0 || count != sizeof(nvram_t)) 129 return 0; 130 131 /* Read NVRAM. */ 132 spin_lock_irqsave(&ha->hardware_lock, flags); 133 qla2x00_lock_nvram_access(ha); 134 witer = (uint16_t *)buf; 135 for (cnt = 0; cnt < count / 2; cnt++) { 136 *witer = cpu_to_le16(qla2x00_get_nvram_word(ha, 137 cnt+ha->nvram_base)); 138 witer++; 139 } 140 qla2x00_unlock_nvram_access(ha); 141 spin_unlock_irqrestore(&ha->hardware_lock, flags); 142 143 return (count); 144 } 145 146 static ssize_t 147 qla2x00_sysfs_write_nvram(struct kobject *kobj, char *buf, loff_t off, 148 size_t count) 149 { 150 struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, 151 struct device, kobj))); 152 uint8_t *iter; 153 uint16_t *witer; 154 unsigned long flags; 155 uint16_t cnt; 156 uint8_t chksum; 157 158 if (!capable(CAP_SYS_ADMIN) || off != 0 || count != sizeof(nvram_t)) 159 return 0; 160 161 /* Checksum NVRAM. */ 162 iter = (uint8_t *)buf; 163 chksum = 0; 164 for (cnt = 0; cnt < count - 1; cnt++) 165 chksum += *iter++; 166 chksum = ~chksum + 1; 167 *iter = chksum; 168 169 /* Write NVRAM. */ 170 spin_lock_irqsave(&ha->hardware_lock, flags); 171 qla2x00_lock_nvram_access(ha); 172 qla2x00_release_nvram_protection(ha); 173 witer = (uint16_t *)buf; 174 for (cnt = 0; cnt < count / 2; cnt++) { 175 qla2x00_write_nvram_word(ha, cnt+ha->nvram_base, 176 cpu_to_le16(*witer)); 177 witer++; 178 } 179 qla2x00_unlock_nvram_access(ha); 180 spin_unlock_irqrestore(&ha->hardware_lock, flags); 181 182 return (count); 183 } 184 185 static struct bin_attribute sysfs_nvram_attr = { 186 .attr = { 187 .name = "nvram", 188 .mode = S_IRUSR | S_IWUSR, 189 .owner = THIS_MODULE, 190 }, 191 .size = sizeof(nvram_t), 192 .read = qla2x00_sysfs_read_nvram, 193 .write = qla2x00_sysfs_write_nvram, 194 }; 195 196 void 197 qla2x00_alloc_sysfs_attr(scsi_qla_host_t *ha) 198 { 199 struct Scsi_Host *host = ha->host; 200 201 sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr); 202 sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr); 203 } 204 205 void 206 qla2x00_free_sysfs_attr(scsi_qla_host_t *ha) 207 { 208 struct Scsi_Host *host = ha->host; 209 210 sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr); 211 sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr); 212 } 213 214 /* Host attributes. */ 215 216 static void 217 qla2x00_get_host_port_id(struct Scsi_Host *shost) 218 { 219 scsi_qla_host_t *ha = to_qla_host(shost); 220 221 fc_host_port_id(shost) = ha->d_id.b.domain << 16 | 222 ha->d_id.b.area << 8 | ha->d_id.b.al_pa; 223 } 224 225 static void 226 qla2x00_get_starget_node_name(struct scsi_target *starget) 227 { 228 struct Scsi_Host *host = dev_to_shost(starget->dev.parent); 229 scsi_qla_host_t *ha = to_qla_host(host); 230 fc_port_t *fcport; 231 uint64_t node_name = 0; 232 233 list_for_each_entry(fcport, &ha->fcports, list) { 234 if (starget->id == fcport->os_target_id) { 235 node_name = *(uint64_t *)fcport->node_name; 236 break; 237 } 238 } 239 240 fc_starget_node_name(starget) = be64_to_cpu(node_name); 241 } 242 243 static void 244 qla2x00_get_starget_port_name(struct scsi_target *starget) 245 { 246 struct Scsi_Host *host = dev_to_shost(starget->dev.parent); 247 scsi_qla_host_t *ha = to_qla_host(host); 248 fc_port_t *fcport; 249 uint64_t port_name = 0; 250 251 list_for_each_entry(fcport, &ha->fcports, list) { 252 if (starget->id == fcport->os_target_id) { 253 port_name = *(uint64_t *)fcport->port_name; 254 break; 255 } 256 } 257 258 fc_starget_port_name(starget) = be64_to_cpu(port_name); 259 } 260 261 static void 262 qla2x00_get_starget_port_id(struct scsi_target *starget) 263 { 264 struct Scsi_Host *host = dev_to_shost(starget->dev.parent); 265 scsi_qla_host_t *ha = to_qla_host(host); 266 fc_port_t *fcport; 267 uint32_t port_id = ~0U; 268 269 list_for_each_entry(fcport, &ha->fcports, list) { 270 if (starget->id == fcport->os_target_id) { 271 port_id = fcport->d_id.b.domain << 16 | 272 fcport->d_id.b.area << 8 | fcport->d_id.b.al_pa; 273 break; 274 } 275 } 276 277 fc_starget_port_id(starget) = port_id; 278 } 279 280 static void 281 qla2x00_get_rport_loss_tmo(struct fc_rport *rport) 282 { 283 struct Scsi_Host *host = rport_to_shost(rport); 284 scsi_qla_host_t *ha = to_qla_host(host); 285 286 rport->dev_loss_tmo = ha->port_down_retry_count + 5; 287 } 288 289 static void 290 qla2x00_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout) 291 { 292 struct Scsi_Host *host = rport_to_shost(rport); 293 scsi_qla_host_t *ha = to_qla_host(host); 294 295 if (timeout) 296 ha->port_down_retry_count = timeout; 297 else 298 ha->port_down_retry_count = 1; 299 300 rport->dev_loss_tmo = ha->port_down_retry_count + 5; 301 } 302 303 struct fc_function_template qla2xxx_transport_functions = { 304 305 .show_host_node_name = 1, 306 .show_host_port_name = 1, 307 .get_host_port_id = qla2x00_get_host_port_id, 308 .show_host_port_id = 1, 309 310 .dd_fcrport_size = sizeof(struct fc_port *), 311 312 .get_starget_node_name = qla2x00_get_starget_node_name, 313 .show_starget_node_name = 1, 314 .get_starget_port_name = qla2x00_get_starget_port_name, 315 .show_starget_port_name = 1, 316 .get_starget_port_id = qla2x00_get_starget_port_id, 317 .show_starget_port_id = 1, 318 319 .get_rport_dev_loss_tmo = qla2x00_get_rport_loss_tmo, 320 .set_rport_dev_loss_tmo = qla2x00_set_rport_loss_tmo, 321 .show_rport_dev_loss_tmo = 1, 322 323 }; 324 325 void 326 qla2x00_init_host_attr(scsi_qla_host_t *ha) 327 { 328 fc_host_node_name(ha->host) = 329 be64_to_cpu(*(uint64_t *)ha->init_cb->node_name); 330 fc_host_port_name(ha->host) = 331 be64_to_cpu(*(uint64_t *)ha->init_cb->port_name); 332 } 333