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 if (!IS_QLA24XX(ha) && !IS_QLA25XX(ha)) 67 free_pages((unsigned long)ha->fw_dump, 68 ha->fw_dump_order); 69 70 ha->fw_dump_reading = 0; 71 ha->fw_dump_buffer = NULL; 72 ha->fw_dump = NULL; 73 ha->fw_dumped = 0; 74 } 75 break; 76 case 1: 77 if ((ha->fw_dump || ha->fw_dumped) && !ha->fw_dump_reading) { 78 ha->fw_dump_reading = 1; 79 80 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) 81 dump_size = FW_DUMP_SIZE_24XX; 82 else { 83 dump_size = FW_DUMP_SIZE_1M; 84 if (ha->fw_memory_size < 0x20000) 85 dump_size = FW_DUMP_SIZE_128K; 86 else if (ha->fw_memory_size < 0x80000) 87 dump_size = FW_DUMP_SIZE_512K; 88 } 89 ha->fw_dump_buffer = (char *)vmalloc(dump_size); 90 if (ha->fw_dump_buffer == NULL) { 91 qla_printk(KERN_WARNING, ha, 92 "Unable to allocate memory for firmware " 93 "dump buffer (%d).\n", dump_size); 94 95 ha->fw_dump_reading = 0; 96 return (count); 97 } 98 qla_printk(KERN_INFO, ha, 99 "Firmware dump ready for read on (%ld).\n", 100 ha->host_no); 101 memset(ha->fw_dump_buffer, 0, dump_size); 102 ha->isp_ops.ascii_fw_dump(ha); 103 ha->fw_dump_buffer_len = strlen(ha->fw_dump_buffer); 104 } 105 break; 106 } 107 return (count); 108 } 109 110 static struct bin_attribute sysfs_fw_dump_attr = { 111 .attr = { 112 .name = "fw_dump", 113 .mode = S_IRUSR | S_IWUSR, 114 .owner = THIS_MODULE, 115 }, 116 .size = 0, 117 .read = qla2x00_sysfs_read_fw_dump, 118 .write = qla2x00_sysfs_write_fw_dump, 119 }; 120 121 static ssize_t 122 qla2x00_sysfs_read_nvram(struct kobject *kobj, char *buf, loff_t off, 123 size_t count) 124 { 125 struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, 126 struct device, kobj))); 127 unsigned long flags; 128 129 if (!capable(CAP_SYS_ADMIN) || off != 0 || count != ha->nvram_size) 130 return 0; 131 132 /* Read NVRAM. */ 133 spin_lock_irqsave(&ha->hardware_lock, flags); 134 ha->isp_ops.read_nvram(ha, (uint8_t *)buf, ha->nvram_base, 135 ha->nvram_size); 136 spin_unlock_irqrestore(&ha->hardware_lock, flags); 137 138 return (count); 139 } 140 141 static ssize_t 142 qla2x00_sysfs_write_nvram(struct kobject *kobj, char *buf, loff_t off, 143 size_t count) 144 { 145 struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, 146 struct device, kobj))); 147 unsigned long flags; 148 uint16_t cnt; 149 150 if (!capable(CAP_SYS_ADMIN) || off != 0 || count != ha->nvram_size) 151 return 0; 152 153 /* Checksum NVRAM. */ 154 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) { 155 uint32_t *iter; 156 uint32_t chksum; 157 158 iter = (uint32_t *)buf; 159 chksum = 0; 160 for (cnt = 0; cnt < ((count >> 2) - 1); cnt++) 161 chksum += le32_to_cpu(*iter++); 162 chksum = ~chksum + 1; 163 *iter = cpu_to_le32(chksum); 164 } else { 165 uint8_t *iter; 166 uint8_t chksum; 167 168 iter = (uint8_t *)buf; 169 chksum = 0; 170 for (cnt = 0; cnt < count - 1; cnt++) 171 chksum += *iter++; 172 chksum = ~chksum + 1; 173 *iter = chksum; 174 } 175 176 /* Write NVRAM. */ 177 spin_lock_irqsave(&ha->hardware_lock, flags); 178 ha->isp_ops.write_nvram(ha, (uint8_t *)buf, ha->nvram_base, count); 179 spin_unlock_irqrestore(&ha->hardware_lock, flags); 180 181 return (count); 182 } 183 184 static struct bin_attribute sysfs_nvram_attr = { 185 .attr = { 186 .name = "nvram", 187 .mode = S_IRUSR | S_IWUSR, 188 .owner = THIS_MODULE, 189 }, 190 .size = 0, 191 .read = qla2x00_sysfs_read_nvram, 192 .write = qla2x00_sysfs_write_nvram, 193 }; 194 195 void 196 qla2x00_alloc_sysfs_attr(scsi_qla_host_t *ha) 197 { 198 struct Scsi_Host *host = ha->host; 199 200 sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr); 201 sysfs_nvram_attr.size = ha->nvram_size; 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