Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * QLOGIC LINUX SOFTWARE |
| 3 | * |
| 4 | * QLogic ISP2x00 device driver for Linux 2.6.x |
| 5 | * Copyright (C) 2003-2004 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/moduleparam.h> |
| 22 | #include <linux/vmalloc.h> |
| 23 | #include <linux/smp_lock.h> |
| 24 | #include <linux/delay.h> |
| 25 | |
| 26 | #include <scsi/scsi_tcq.h> |
| 27 | #include <scsi/scsicam.h> |
| 28 | #include <scsi/scsi_transport.h> |
| 29 | #include <scsi/scsi_transport_fc.h> |
| 30 | |
| 31 | /* |
| 32 | * Driver version |
| 33 | */ |
| 34 | char qla2x00_version_str[40]; |
| 35 | |
| 36 | /* |
| 37 | * SRB allocation cache |
| 38 | */ |
| 39 | char srb_cachep_name[16]; |
| 40 | kmem_cache_t *srb_cachep; |
| 41 | |
| 42 | /* |
| 43 | * Stats for all adpaters. |
| 44 | */ |
| 45 | struct _qla2x00stats qla2x00_stats; |
| 46 | |
| 47 | /* |
| 48 | * Ioctl related information. |
| 49 | */ |
| 50 | int num_hosts; |
| 51 | int apiHBAInstance; |
| 52 | |
| 53 | /* |
| 54 | * Module parameter information and variables |
| 55 | */ |
| 56 | int ql2xmaxqdepth; |
| 57 | module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR); |
| 58 | MODULE_PARM_DESC(ql2xmaxqdepth, |
| 59 | "Maximum queue depth to report for target devices."); |
| 60 | |
| 61 | int ql2xlogintimeout = 20; |
| 62 | module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR); |
| 63 | MODULE_PARM_DESC(ql2xlogintimeout, |
| 64 | "Login timeout value in seconds."); |
| 65 | |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 66 | int qlport_down_retry = 30; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR); |
| 68 | MODULE_PARM_DESC(qlport_down_retry, |
| 69 | "Maximum number of command retries to a port that returns" |
| 70 | "a PORT-DOWN status."); |
| 71 | |
| 72 | int ql2xretrycount = 20; |
| 73 | module_param(ql2xretrycount, int, S_IRUGO|S_IWUSR); |
| 74 | MODULE_PARM_DESC(ql2xretrycount, |
| 75 | "Maximum number of mid-layer retries allowed for a command. " |
| 76 | "Default value is 20, "); |
| 77 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | int ql2xplogiabsentdevice; |
| 79 | module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR); |
| 80 | MODULE_PARM_DESC(ql2xplogiabsentdevice, |
| 81 | "Option to enable PLOGI to devices that are not present after " |
| 82 | "a Fabric scan. This is needed for several broken switches." |
| 83 | "Default is 0 - no PLOGI. 1 - perfom PLOGI."); |
| 84 | |
| 85 | int ql2xenablezio = 0; |
| 86 | module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR); |
| 87 | MODULE_PARM_DESC(ql2xenablezio, |
| 88 | "Option to enable ZIO:If 1 then enable it otherwise" |
| 89 | " use the default set in the NVRAM." |
| 90 | " Default is 0 : disabled"); |
| 91 | |
| 92 | int ql2xintrdelaytimer = 10; |
| 93 | module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR); |
| 94 | MODULE_PARM_DESC(ql2xintrdelaytimer, |
| 95 | "ZIO: Waiting time for Firmware before it generates an " |
| 96 | "interrupt to the host to notify completion of request."); |
| 97 | |
| 98 | int ConfigRequired; |
| 99 | module_param(ConfigRequired, int, S_IRUGO|S_IRUSR); |
| 100 | MODULE_PARM_DESC(ConfigRequired, |
| 101 | "If 1, then only configured devices passed in through the" |
| 102 | "ql2xopts parameter will be presented to the OS"); |
| 103 | |
| 104 | int Bind = BIND_BY_PORT_NAME; |
| 105 | module_param(Bind, int, S_IRUGO|S_IRUSR); |
| 106 | MODULE_PARM_DESC(Bind, |
| 107 | "Target persistent binding method: " |
| 108 | "0 by Portname (default); 1 by PortID; 2 by Nodename. "); |
| 109 | |
| 110 | int ql2xsuspendcount = SUSPEND_COUNT; |
| 111 | module_param(ql2xsuspendcount, int, S_IRUGO|S_IWUSR); |
| 112 | MODULE_PARM_DESC(ql2xsuspendcount, |
| 113 | "Number of 6-second suspend iterations to perform while a " |
| 114 | "target returns a <NOT READY> status. Default is 10 " |
| 115 | "iterations."); |
| 116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | int ql2xloginretrycount = 0; |
| 118 | module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR); |
| 119 | MODULE_PARM_DESC(ql2xloginretrycount, |
| 120 | "Specify an alternate value for the NVRAM login retry count."); |
| 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | static void qla2x00_free_device(scsi_qla_host_t *); |
| 123 | |
| 124 | static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha); |
| 125 | |
| 126 | /* |
| 127 | * SCSI host template entry points |
| 128 | */ |
| 129 | static int qla2xxx_slave_configure(struct scsi_device * device); |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 130 | static int qla2xxx_slave_alloc(struct scsi_device *); |
| 131 | static void qla2xxx_slave_destroy(struct scsi_device *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | static int qla2x00_queuecommand(struct scsi_cmnd *cmd, |
| 133 | void (*fn)(struct scsi_cmnd *)); |
| 134 | static int qla2xxx_eh_abort(struct scsi_cmnd *); |
| 135 | static int qla2xxx_eh_device_reset(struct scsi_cmnd *); |
| 136 | static int qla2xxx_eh_bus_reset(struct scsi_cmnd *); |
| 137 | static int qla2xxx_eh_host_reset(struct scsi_cmnd *); |
| 138 | static int qla2x00_loop_reset(scsi_qla_host_t *ha); |
| 139 | static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *); |
| 140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | static struct scsi_host_template qla2x00_driver_template = { |
| 142 | .module = THIS_MODULE, |
| 143 | .name = "qla2xxx", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | .queuecommand = qla2x00_queuecommand, |
| 145 | |
| 146 | .eh_abort_handler = qla2xxx_eh_abort, |
| 147 | .eh_device_reset_handler = qla2xxx_eh_device_reset, |
| 148 | .eh_bus_reset_handler = qla2xxx_eh_bus_reset, |
| 149 | .eh_host_reset_handler = qla2xxx_eh_host_reset, |
| 150 | |
| 151 | .slave_configure = qla2xxx_slave_configure, |
| 152 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 153 | .slave_alloc = qla2xxx_slave_alloc, |
| 154 | .slave_destroy = qla2xxx_slave_destroy, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | .this_id = -1, |
| 156 | .cmd_per_lun = 3, |
| 157 | .use_clustering = ENABLE_CLUSTERING, |
| 158 | .sg_tablesize = SG_ALL, |
| 159 | |
| 160 | /* |
| 161 | * The RISC allows for each command to transfer (2^32-1) bytes of data, |
| 162 | * which equates to 0x800000 sectors. |
| 163 | */ |
| 164 | .max_sectors = 0xFFFF, |
| 165 | }; |
| 166 | |
| 167 | static struct scsi_transport_template *qla2xxx_transport_template = NULL; |
| 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | /* TODO Convert to inlines |
| 170 | * |
| 171 | * Timer routines |
| 172 | */ |
| 173 | #define WATCH_INTERVAL 1 /* number of seconds */ |
| 174 | |
| 175 | static void qla2x00_timer(scsi_qla_host_t *); |
| 176 | |
| 177 | static __inline__ void qla2x00_start_timer(scsi_qla_host_t *, |
| 178 | void *, unsigned long); |
| 179 | static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long); |
| 180 | static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *); |
| 181 | |
| 182 | static inline void |
| 183 | qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval) |
| 184 | { |
| 185 | init_timer(&ha->timer); |
| 186 | ha->timer.expires = jiffies + interval * HZ; |
| 187 | ha->timer.data = (unsigned long)ha; |
| 188 | ha->timer.function = (void (*)(unsigned long))func; |
| 189 | add_timer(&ha->timer); |
| 190 | ha->timer_active = 1; |
| 191 | } |
| 192 | |
| 193 | static inline void |
| 194 | qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval) |
| 195 | { |
| 196 | mod_timer(&ha->timer, jiffies + interval * HZ); |
| 197 | } |
| 198 | |
| 199 | static __inline__ void |
| 200 | qla2x00_stop_timer(scsi_qla_host_t *ha) |
| 201 | { |
| 202 | del_timer_sync(&ha->timer); |
| 203 | ha->timer_active = 0; |
| 204 | } |
| 205 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | static int qla2x00_do_dpc(void *data); |
| 207 | |
| 208 | static void qla2x00_rst_aen(scsi_qla_host_t *); |
| 209 | |
| 210 | static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *); |
| 211 | static void qla2x00_mem_free(scsi_qla_host_t *ha); |
| 212 | static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha); |
| 213 | static void qla2x00_free_sp_pool(scsi_qla_host_t *ha); |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 214 | static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *); |
| 215 | static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *); |
| 216 | void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | /* -------------------------------------------------------------------------- */ |
| 219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | static char * |
| 221 | qla2x00_get_pci_info_str(struct scsi_qla_host *ha, char *str) |
| 222 | { |
| 223 | static char *pci_bus_modes[] = { |
| 224 | "33", "66", "100", "133", |
| 225 | }; |
| 226 | uint16_t pci_bus; |
| 227 | |
| 228 | strcpy(str, "PCI"); |
| 229 | pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9; |
| 230 | if (pci_bus) { |
| 231 | strcat(str, "-X ("); |
| 232 | strcat(str, pci_bus_modes[pci_bus]); |
| 233 | } else { |
| 234 | pci_bus = (ha->pci_attr & BIT_8) >> 8; |
| 235 | strcat(str, " ("); |
| 236 | strcat(str, pci_bus_modes[pci_bus]); |
| 237 | } |
| 238 | strcat(str, " MHz)"); |
| 239 | |
| 240 | return (str); |
| 241 | } |
| 242 | |
| 243 | char * |
| 244 | qla2x00_get_fw_version_str(struct scsi_qla_host *ha, char *str) |
| 245 | { |
| 246 | char un_str[10]; |
| 247 | |
| 248 | sprintf(str, "%d.%02d.%02d ", ha->fw_major_version, |
| 249 | ha->fw_minor_version, |
| 250 | ha->fw_subminor_version); |
| 251 | |
| 252 | if (ha->fw_attributes & BIT_9) { |
| 253 | strcat(str, "FLX"); |
| 254 | return (str); |
| 255 | } |
| 256 | |
| 257 | switch (ha->fw_attributes & 0xFF) { |
| 258 | case 0x7: |
| 259 | strcat(str, "EF"); |
| 260 | break; |
| 261 | case 0x17: |
| 262 | strcat(str, "TP"); |
| 263 | break; |
| 264 | case 0x37: |
| 265 | strcat(str, "IP"); |
| 266 | break; |
| 267 | case 0x77: |
| 268 | strcat(str, "VI"); |
| 269 | break; |
| 270 | default: |
| 271 | sprintf(un_str, "(%x)", ha->fw_attributes); |
| 272 | strcat(str, un_str); |
| 273 | break; |
| 274 | } |
| 275 | if (ha->fw_attributes & 0x100) |
| 276 | strcat(str, "X"); |
| 277 | |
| 278 | return (str); |
| 279 | } |
| 280 | |
| 281 | /************************************************************************** |
| 282 | * qla2x00_queuecommand |
| 283 | * |
| 284 | * Description: |
| 285 | * Queue a command to the controller. |
| 286 | * |
| 287 | * Input: |
| 288 | * cmd - pointer to Scsi cmd structure |
| 289 | * fn - pointer to Scsi done function |
| 290 | * |
| 291 | * Returns: |
| 292 | * 0 - Always |
| 293 | * |
| 294 | * Note: |
| 295 | * The mid-level driver tries to ensures that queuecommand never gets invoked |
| 296 | * concurrently with itself or the interrupt handler (although the |
| 297 | * interrupt handler may call this routine as part of request-completion |
| 298 | * handling). |
| 299 | **************************************************************************/ |
| 300 | static int |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 301 | qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | { |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 303 | scsi_qla_host_t *ha = to_qla_host(cmd->device->host); |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 304 | fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 305 | srb_t *sp; |
| 306 | int rval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 308 | if (!fcport) { |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 309 | cmd->result = DID_NO_CONNECT << 16; |
| 310 | goto qc_fail_command; |
| 311 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 313 | if (atomic_read(&fcport->state) != FCS_ONLINE) { |
| 314 | if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD || |
| 315 | atomic_read(&ha->loop_state) == LOOP_DEAD) { |
| 316 | cmd->result = DID_NO_CONNECT << 16; |
| 317 | goto qc_fail_command; |
| 318 | } |
| 319 | goto qc_host_busy; |
| 320 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
| 322 | spin_unlock_irq(ha->host->host_lock); |
| 323 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 324 | /* Allocate a command packet from the "sp" pool. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | if ((sp = qla2x00_get_new_sp(ha)) == NULL) { |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 326 | goto qc_host_busy_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | } |
| 328 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 329 | sp->ha = ha; |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 330 | sp->fcport = fcport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | sp->cmd = cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | sp->flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | sp->err_id = 0; |
| 334 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 335 | CMD_SP(cmd) = (void *)sp; |
| 336 | cmd->scsi_done = done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 338 | rval = qla2x00_start_scsi(sp); |
| 339 | if (rval != QLA_SUCCESS) |
| 340 | goto qc_host_busy_free_sp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 342 | /* Manage unprocessed RIO/ZIO commands in response queue. */ |
| 343 | if (ha->flags.online && ha->flags.process_response_queue && |
| 344 | ha->response_ring_ptr->signature != RESPONSE_PROCESSED) { |
| 345 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 347 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 348 | qla2x00_process_response_queue(ha); |
| 349 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | } |
| 351 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | spin_lock_irq(ha->host->host_lock); |
| 353 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 354 | return 0; |
| 355 | |
| 356 | qc_host_busy_free_sp: |
| 357 | qla2x00_sp_free_dma(ha, sp); |
| 358 | CMD_SP(cmd) = NULL; |
| 359 | mempool_free(sp, ha->srb_mempool); |
| 360 | |
| 361 | qc_host_busy_lock: |
| 362 | spin_lock_irq(ha->host->host_lock); |
| 363 | |
| 364 | qc_host_busy: |
| 365 | return SCSI_MLQUEUE_HOST_BUSY; |
| 366 | |
| 367 | qc_fail_command: |
| 368 | done(cmd); |
| 369 | |
| 370 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | } |
| 372 | |
| 373 | /* |
| 374 | * qla2x00_eh_wait_on_command |
| 375 | * Waits for the command to be returned by the Firmware for some |
| 376 | * max time. |
| 377 | * |
| 378 | * Input: |
| 379 | * ha = actual ha whose done queue will contain the command |
| 380 | * returned by firmware. |
| 381 | * cmd = Scsi Command to wait on. |
| 382 | * flag = Abort/Reset(Bus or Device Reset) |
| 383 | * |
| 384 | * Return: |
| 385 | * Not Found : 0 |
| 386 | * Found : 1 |
| 387 | */ |
| 388 | static int |
| 389 | qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd) |
| 390 | { |
| 391 | #define ABORT_POLLING_PERIOD HZ |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 392 | #define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD)) |
| 393 | unsigned long wait_iter = ABORT_WAIT_ITER; |
| 394 | int ret = QLA_SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 396 | while (CMD_SP(cmd)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 398 | schedule_timeout(ABORT_POLLING_PERIOD); |
| 399 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 400 | if (--wait_iter) |
| 401 | break; |
| 402 | } |
| 403 | if (CMD_SP(cmd)) |
| 404 | ret = QLA_FUNCTION_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 406 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | } |
| 408 | |
| 409 | /* |
| 410 | * qla2x00_wait_for_hba_online |
| 411 | * Wait till the HBA is online after going through |
| 412 | * <= MAX_RETRIES_OF_ISP_ABORT or |
| 413 | * finally HBA is disabled ie marked offline |
| 414 | * |
| 415 | * Input: |
| 416 | * ha - pointer to host adapter structure |
| 417 | * |
| 418 | * Note: |
| 419 | * Does context switching-Release SPIN_LOCK |
| 420 | * (if any) before calling this routine. |
| 421 | * |
| 422 | * Return: |
| 423 | * Success (Adapter is online) : 0 |
| 424 | * Failed (Adapter is offline/disabled) : 1 |
| 425 | */ |
| 426 | static int |
| 427 | qla2x00_wait_for_hba_online(scsi_qla_host_t *ha) |
| 428 | { |
| 429 | int return_status; |
| 430 | unsigned long wait_online; |
| 431 | |
| 432 | wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ); |
| 433 | while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) || |
| 434 | test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) || |
| 435 | test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) || |
| 436 | ha->dpc_active) && time_before(jiffies, wait_online)) { |
| 437 | |
| 438 | msleep(1000); |
| 439 | } |
| 440 | if (ha->flags.online) |
| 441 | return_status = QLA_SUCCESS; |
| 442 | else |
| 443 | return_status = QLA_FUNCTION_FAILED; |
| 444 | |
| 445 | DEBUG2(printk("%s return_status=%d\n",__func__,return_status)); |
| 446 | |
| 447 | return (return_status); |
| 448 | } |
| 449 | |
| 450 | /* |
| 451 | * qla2x00_wait_for_loop_ready |
| 452 | * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop |
| 453 | * to be in LOOP_READY state. |
| 454 | * Input: |
| 455 | * ha - pointer to host adapter structure |
| 456 | * |
| 457 | * Note: |
| 458 | * Does context switching-Release SPIN_LOCK |
| 459 | * (if any) before calling this routine. |
| 460 | * |
| 461 | * |
| 462 | * Return: |
| 463 | * Success (LOOP_READY) : 0 |
| 464 | * Failed (LOOP_NOT_READY) : 1 |
| 465 | */ |
| 466 | static inline int |
| 467 | qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha) |
| 468 | { |
| 469 | int return_status = QLA_SUCCESS; |
| 470 | unsigned long loop_timeout ; |
| 471 | |
| 472 | /* wait for 5 min at the max for loop to be ready */ |
| 473 | loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ); |
| 474 | |
| 475 | while ((!atomic_read(&ha->loop_down_timer) && |
| 476 | atomic_read(&ha->loop_state) == LOOP_DOWN) || |
| 477 | test_bit(CFG_ACTIVE, &ha->cfg_flags) || |
| 478 | atomic_read(&ha->loop_state) != LOOP_READY) { |
| 479 | msleep(1000); |
| 480 | if (time_after_eq(jiffies, loop_timeout)) { |
| 481 | return_status = QLA_FUNCTION_FAILED; |
| 482 | break; |
| 483 | } |
| 484 | } |
| 485 | return (return_status); |
| 486 | } |
| 487 | |
| 488 | /************************************************************************** |
| 489 | * qla2xxx_eh_abort |
| 490 | * |
| 491 | * Description: |
| 492 | * The abort function will abort the specified command. |
| 493 | * |
| 494 | * Input: |
| 495 | * cmd = Linux SCSI command packet to be aborted. |
| 496 | * |
| 497 | * Returns: |
| 498 | * Either SUCCESS or FAILED. |
| 499 | * |
| 500 | * Note: |
| 501 | **************************************************************************/ |
| 502 | int |
| 503 | qla2xxx_eh_abort(struct scsi_cmnd *cmd) |
| 504 | { |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 505 | scsi_qla_host_t *ha = to_qla_host(cmd->device->host); |
| 506 | srb_t *sp; |
| 507 | int ret, i; |
| 508 | unsigned int id, lun; |
| 509 | unsigned long serial; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 511 | if (!CMD_SP(cmd)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | return FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 514 | ret = FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 516 | id = cmd->device->id; |
| 517 | lun = cmd->device->lun; |
| 518 | serial = cmd->serial_number; |
| 519 | |
| 520 | /* Check active list for command command. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | spin_unlock_irq(ha->host->host_lock); |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 522 | spin_lock(&ha->hardware_lock); |
| 523 | for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) { |
| 524 | sp = ha->outstanding_cmds[i]; |
| 525 | |
| 526 | if (sp == NULL) |
| 527 | continue; |
| 528 | |
| 529 | if (sp->cmd != cmd) |
| 530 | continue; |
| 531 | |
| 532 | DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld " |
| 533 | "sp->state=%x\n", __func__, ha->host_no, sp, serial, |
| 534 | sp->state)); |
| 535 | DEBUG3(qla2x00_print_scsi_cmd(cmd);) |
| 536 | |
| 537 | spin_unlock(&ha->hardware_lock); |
| 538 | if (qla2x00_abort_command(ha, sp)) { |
| 539 | DEBUG2(printk("%s(%ld): abort_command " |
| 540 | "mbx failed.\n", __func__, ha->host_no)); |
| 541 | } else { |
| 542 | DEBUG3(printk("%s(%ld): abort_command " |
| 543 | "mbx success.\n", __func__, ha->host_no)); |
| 544 | ret = SUCCESS; |
| 545 | } |
| 546 | spin_lock(&ha->hardware_lock); |
| 547 | |
| 548 | break; |
| 549 | } |
| 550 | |
| 551 | /* Wait for the command to be returned. */ |
| 552 | if (ret == SUCCESS) { |
| 553 | spin_unlock(&ha->hardware_lock); |
| 554 | if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) { |
| 555 | qla_printk(KERN_ERR, ha, |
| 556 | "scsi(%ld:%d:%d): Abort handler timed out -- %lx " |
| 557 | "%x.\n", ha->host_no, id, lun, serial, ret); |
| 558 | } |
| 559 | spin_lock(&ha->hardware_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | } |
| 561 | spin_lock_irq(ha->host->host_lock); |
| 562 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 563 | qla_printk(KERN_INFO, ha, |
| 564 | "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no, |
| 565 | id, lun, serial, ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 567 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | } |
| 569 | |
| 570 | /************************************************************************** |
| 571 | * qla2x00_eh_wait_for_pending_target_commands |
| 572 | * |
| 573 | * Description: |
| 574 | * Waits for all the commands to come back from the specified target. |
| 575 | * |
| 576 | * Input: |
| 577 | * ha - pointer to scsi_qla_host structure. |
| 578 | * t - target |
| 579 | * Returns: |
| 580 | * Either SUCCESS or FAILED. |
| 581 | * |
| 582 | * Note: |
| 583 | **************************************************************************/ |
| 584 | static int |
| 585 | qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t) |
| 586 | { |
| 587 | int cnt; |
| 588 | int status; |
| 589 | srb_t *sp; |
| 590 | struct scsi_cmnd *cmd; |
| 591 | |
| 592 | status = 0; |
| 593 | |
| 594 | /* |
| 595 | * Waiting for all commands for the designated target in the active |
| 596 | * array |
| 597 | */ |
| 598 | for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) { |
| 599 | spin_lock(&ha->hardware_lock); |
| 600 | sp = ha->outstanding_cmds[cnt]; |
| 601 | if (sp) { |
| 602 | cmd = sp->cmd; |
| 603 | spin_unlock(&ha->hardware_lock); |
| 604 | if (cmd->device->id == t) { |
| 605 | if (!qla2x00_eh_wait_on_command(ha, cmd)) { |
| 606 | status = 1; |
| 607 | break; |
| 608 | } |
| 609 | } |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 610 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | spin_unlock(&ha->hardware_lock); |
| 612 | } |
| 613 | } |
| 614 | return (status); |
| 615 | } |
| 616 | |
| 617 | |
| 618 | /************************************************************************** |
| 619 | * qla2xxx_eh_device_reset |
| 620 | * |
| 621 | * Description: |
| 622 | * The device reset function will reset the target and abort any |
| 623 | * executing commands. |
| 624 | * |
| 625 | * NOTE: The use of SP is undefined within this context. Do *NOT* |
| 626 | * attempt to use this value, even if you determine it is |
| 627 | * non-null. |
| 628 | * |
| 629 | * Input: |
| 630 | * cmd = Linux SCSI command packet of the command that cause the |
| 631 | * bus device reset. |
| 632 | * |
| 633 | * Returns: |
| 634 | * SUCCESS/FAILURE (defined as macro in scsi.h). |
| 635 | * |
| 636 | **************************************************************************/ |
| 637 | int |
| 638 | qla2xxx_eh_device_reset(struct scsi_cmnd *cmd) |
| 639 | { |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 640 | scsi_qla_host_t *ha = to_qla_host(cmd->device->host); |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 641 | fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 642 | srb_t *sp; |
| 643 | int ret; |
| 644 | unsigned int id, lun; |
| 645 | unsigned long serial; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 647 | ret = FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 649 | id = cmd->device->id; |
| 650 | lun = cmd->device->lun; |
| 651 | serial = cmd->serial_number; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 653 | sp = (srb_t *) CMD_SP(cmd); |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 654 | if (!sp || !fcport) |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 655 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | |
| 657 | qla_printk(KERN_INFO, ha, |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 658 | "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | |
| 660 | spin_unlock_irq(ha->host->host_lock); |
| 661 | |
| 662 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | spin_lock_irq(ha->host->host_lock); |
| 664 | goto eh_dev_reset_done; |
| 665 | } |
| 666 | |
| 667 | if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) { |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 668 | if (qla2x00_device_reset(ha, fcport) == 0) |
| 669 | ret = SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | |
| 671 | #if defined(LOGOUT_AFTER_DEVICE_RESET) |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 672 | if (ret == SUCCESS) { |
| 673 | if (fcport->flags & FC_FABRIC_DEVICE) { |
| 674 | qla2x00_fabric_logout(ha, fcport->loop_id); |
| 675 | qla2x00_mark_device_lost(ha, fcport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | } |
| 677 | } |
| 678 | #endif |
| 679 | } else { |
| 680 | DEBUG2(printk(KERN_INFO |
| 681 | "%s failed: loop not ready\n",__func__);) |
| 682 | } |
| 683 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 684 | if (ret == FAILED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | DEBUG3(printk("%s(%ld): device reset failed\n", |
| 686 | __func__, ha->host_no)); |
| 687 | qla_printk(KERN_INFO, ha, "%s: device reset failed\n", |
| 688 | __func__); |
| 689 | |
| 690 | goto eh_dev_reset_done; |
| 691 | } |
| 692 | |
| 693 | /* |
| 694 | * If we are coming down the EH path, wait for all commands to |
| 695 | * complete for the device. |
| 696 | */ |
| 697 | if (cmd->device->host->eh_active) { |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 698 | if (qla2x00_eh_wait_for_pending_target_commands(ha, id)) |
| 699 | ret = FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 701 | if (ret == FAILED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | DEBUG3(printk("%s(%ld): failed while waiting for " |
| 703 | "commands\n", __func__, ha->host_no)); |
| 704 | qla_printk(KERN_INFO, ha, |
| 705 | "%s: failed while waiting for commands\n", |
| 706 | __func__); |
| 707 | |
| 708 | goto eh_dev_reset_done; |
| 709 | } |
| 710 | } |
| 711 | |
| 712 | qla_printk(KERN_INFO, ha, |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 713 | "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | |
| 715 | eh_dev_reset_done: |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 716 | spin_lock_irq(ha->host->host_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 718 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | /************************************************************************** |
| 722 | * qla2x00_eh_wait_for_pending_commands |
| 723 | * |
| 724 | * Description: |
| 725 | * Waits for all the commands to come back from the specified host. |
| 726 | * |
| 727 | * Input: |
| 728 | * ha - pointer to scsi_qla_host structure. |
| 729 | * |
| 730 | * Returns: |
| 731 | * 1 : SUCCESS |
| 732 | * 0 : FAILED |
| 733 | * |
| 734 | * Note: |
| 735 | **************************************************************************/ |
| 736 | static int |
| 737 | qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha) |
| 738 | { |
| 739 | int cnt; |
| 740 | int status; |
| 741 | srb_t *sp; |
| 742 | struct scsi_cmnd *cmd; |
| 743 | |
| 744 | status = 1; |
| 745 | |
| 746 | /* |
| 747 | * Waiting for all commands for the designated target in the active |
| 748 | * array |
| 749 | */ |
| 750 | for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) { |
| 751 | spin_lock(&ha->hardware_lock); |
| 752 | sp = ha->outstanding_cmds[cnt]; |
| 753 | if (sp) { |
| 754 | cmd = sp->cmd; |
| 755 | spin_unlock(&ha->hardware_lock); |
| 756 | status = qla2x00_eh_wait_on_command(ha, cmd); |
| 757 | if (status == 0) |
| 758 | break; |
| 759 | } |
| 760 | else { |
| 761 | spin_unlock(&ha->hardware_lock); |
| 762 | } |
| 763 | } |
| 764 | return (status); |
| 765 | } |
| 766 | |
| 767 | |
| 768 | /************************************************************************** |
| 769 | * qla2xxx_eh_bus_reset |
| 770 | * |
| 771 | * Description: |
| 772 | * The bus reset function will reset the bus and abort any executing |
| 773 | * commands. |
| 774 | * |
| 775 | * Input: |
| 776 | * cmd = Linux SCSI command packet of the command that cause the |
| 777 | * bus reset. |
| 778 | * |
| 779 | * Returns: |
| 780 | * SUCCESS/FAILURE (defined as macro in scsi.h). |
| 781 | * |
| 782 | **************************************************************************/ |
| 783 | int |
| 784 | qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd) |
| 785 | { |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 786 | scsi_qla_host_t *ha = to_qla_host(cmd->device->host); |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 787 | fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | srb_t *sp; |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 789 | int ret; |
| 790 | unsigned int id, lun; |
| 791 | unsigned long serial; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 793 | ret = FAILED; |
| 794 | |
| 795 | id = cmd->device->id; |
| 796 | lun = cmd->device->lun; |
| 797 | serial = cmd->serial_number; |
| 798 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | sp = (srb_t *) CMD_SP(cmd); |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 800 | if (!sp || !fcport) |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 801 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | |
| 803 | qla_printk(KERN_INFO, ha, |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 804 | "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | |
| 806 | spin_unlock_irq(ha->host->host_lock); |
| 807 | |
| 808 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) { |
| 809 | DEBUG2(printk("%s failed:board disabled\n",__func__)); |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 810 | goto eh_bus_reset_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | } |
| 812 | |
| 813 | if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) { |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 814 | if (qla2x00_loop_reset(ha) == QLA_SUCCESS) |
| 815 | ret = SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | } |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 817 | if (ret == FAILED) |
| 818 | goto eh_bus_reset_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | |
| 820 | /* Waiting for our command in done_queue to be returned to OS.*/ |
| 821 | if (cmd->device->host->eh_active) |
| 822 | if (!qla2x00_eh_wait_for_pending_commands(ha)) |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 823 | ret = FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 825 | eh_bus_reset_done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 827 | (ret == FAILED) ? "failed" : "succeded"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 829 | spin_lock_irq(ha->host->host_lock); |
| 830 | |
| 831 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | } |
| 833 | |
| 834 | /************************************************************************** |
| 835 | * qla2xxx_eh_host_reset |
| 836 | * |
| 837 | * Description: |
| 838 | * The reset function will reset the Adapter. |
| 839 | * |
| 840 | * Input: |
| 841 | * cmd = Linux SCSI command packet of the command that cause the |
| 842 | * adapter reset. |
| 843 | * |
| 844 | * Returns: |
| 845 | * Either SUCCESS or FAILED. |
| 846 | * |
| 847 | * Note: |
| 848 | **************************************************************************/ |
| 849 | int |
| 850 | qla2xxx_eh_host_reset(struct scsi_cmnd *cmd) |
| 851 | { |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 852 | scsi_qla_host_t *ha = to_qla_host(cmd->device->host); |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 853 | fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 854 | srb_t *sp; |
| 855 | int ret; |
| 856 | unsigned int id, lun; |
| 857 | unsigned long serial; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 859 | ret = FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 861 | id = cmd->device->id; |
| 862 | lun = cmd->device->lun; |
| 863 | serial = cmd->serial_number; |
| 864 | |
| 865 | sp = (srb_t *) CMD_SP(cmd); |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 866 | if (!sp || !fcport) |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 867 | return ret; |
| 868 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | qla_printk(KERN_INFO, ha, |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 870 | "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
| 872 | spin_unlock_irq(ha->host->host_lock); |
| 873 | |
| 874 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 875 | goto eh_host_reset_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | |
| 877 | /* |
| 878 | * Fixme-may be dpc thread is active and processing |
| 879 | * loop_resync,so wait a while for it to |
| 880 | * be completed and then issue big hammer.Otherwise |
| 881 | * it may cause I/O failure as big hammer marks the |
| 882 | * devices as lost kicking of the port_down_timer |
| 883 | * while dpc is stuck for the mailbox to complete. |
| 884 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | qla2x00_wait_for_loop_ready(ha); |
| 886 | set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); |
| 887 | if (qla2x00_abort_isp(ha)) { |
| 888 | clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); |
| 889 | /* failed. schedule dpc to try */ |
| 890 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| 891 | |
| 892 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 893 | goto eh_host_reset_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); |
| 896 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | /* Waiting for our command in done_queue to be returned to OS.*/ |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 898 | if (qla2x00_eh_wait_for_pending_commands(ha)) |
| 899 | ret = SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 901 | eh_host_reset_lock: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | spin_lock_irq(ha->host->host_lock); |
| 903 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 904 | qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, |
| 905 | (ret == FAILED) ? "failed" : "succeded"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 907 | return ret; |
| 908 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | |
| 910 | /* |
| 911 | * qla2x00_loop_reset |
| 912 | * Issue loop reset. |
| 913 | * |
| 914 | * Input: |
| 915 | * ha = adapter block pointer. |
| 916 | * |
| 917 | * Returns: |
| 918 | * 0 = success |
| 919 | */ |
| 920 | static int |
| 921 | qla2x00_loop_reset(scsi_qla_host_t *ha) |
| 922 | { |
| 923 | int status = QLA_SUCCESS; |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 924 | struct fc_port *fcport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | |
| 926 | if (ha->flags.enable_lip_reset) { |
| 927 | status = qla2x00_lip_reset(ha); |
| 928 | } |
| 929 | |
| 930 | if (status == QLA_SUCCESS && ha->flags.enable_target_reset) { |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 931 | list_for_each_entry(fcport, &ha->fcports, list) { |
| 932 | if (fcport->port_type != FCT_TARGET) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | continue; |
| 934 | |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 935 | status = qla2x00_target_reset(ha, fcport); |
| 936 | if (status != QLA_SUCCESS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | } |
| 939 | } |
| 940 | |
| 941 | if (status == QLA_SUCCESS && |
| 942 | ((!ha->flags.enable_target_reset && |
| 943 | !ha->flags.enable_lip_reset) || |
| 944 | ha->flags.enable_lip_full_login)) { |
| 945 | |
| 946 | status = qla2x00_full_login_lip(ha); |
| 947 | } |
| 948 | |
| 949 | /* Issue marker command only when we are going to start the I/O */ |
| 950 | ha->marker_needed = 1; |
| 951 | |
| 952 | if (status) { |
| 953 | /* Empty */ |
| 954 | DEBUG2_3(printk("%s(%ld): **** FAILED ****\n", |
| 955 | __func__, |
| 956 | ha->host_no);) |
| 957 | } else { |
| 958 | /* Empty */ |
| 959 | DEBUG3(printk("%s(%ld): exiting normally.\n", |
| 960 | __func__, |
| 961 | ha->host_no);) |
| 962 | } |
| 963 | |
| 964 | return(status); |
| 965 | } |
| 966 | |
| 967 | /* |
| 968 | * qla2x00_device_reset |
| 969 | * Issue bus device reset message to the target. |
| 970 | * |
| 971 | * Input: |
| 972 | * ha = adapter block pointer. |
| 973 | * t = SCSI ID. |
| 974 | * TARGET_QUEUE_LOCK must be released. |
| 975 | * ADAPTER_STATE_LOCK must be released. |
| 976 | * |
| 977 | * Context: |
| 978 | * Kernel context. |
| 979 | */ |
| 980 | static int |
| 981 | qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport) |
| 982 | { |
| 983 | /* Abort Target command will clear Reservation */ |
| 984 | return qla2x00_abort_target(reset_fcport); |
| 985 | } |
| 986 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 987 | static int |
| 988 | qla2xxx_slave_alloc(struct scsi_device *sdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | { |
| 990 | scsi_qla_host_t *ha = to_qla_host(sdev->host); |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 991 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
| 992 | fc_port_t *fcport; |
| 993 | int found; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 995 | if (!rport) |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 996 | return -ENXIO; |
| 997 | |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 998 | found = 0; |
| 999 | list_for_each_entry(fcport, &ha->fcports, list) { |
| 1000 | if (rport->port_name == |
| 1001 | be64_to_cpu(*(uint64_t *)fcport->port_name)) { |
| 1002 | found++; |
| 1003 | break; |
| 1004 | } |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 1005 | } |
| 1006 | if (!found) |
| 1007 | return -ENXIO; |
| 1008 | |
| 1009 | sdev->hostdata = fcport; |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 1010 | |
| 1011 | return 0; |
| 1012 | } |
| 1013 | |
| 1014 | static int |
| 1015 | qla2xxx_slave_configure(struct scsi_device *sdev) |
| 1016 | { |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1017 | scsi_qla_host_t *ha = to_qla_host(sdev->host); |
| 1018 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); |
| 1019 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 1020 | if (sdev->tagged_supported) |
| 1021 | scsi_activate_tcq(sdev, 32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | else |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 1023 | scsi_deactivate_tcq(sdev, 32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1025 | rport->dev_loss_tmo = ha->port_down_retry_count + 5; |
| 1026 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 1027 | return 0; |
| 1028 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 1030 | static void |
| 1031 | qla2xxx_slave_destroy(struct scsi_device *sdev) |
| 1032 | { |
| 1033 | sdev->hostdata = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | } |
| 1035 | |
| 1036 | /** |
| 1037 | * qla2x00_config_dma_addressing() - Configure OS DMA addressing method. |
| 1038 | * @ha: HA context |
| 1039 | * |
| 1040 | * At exit, the @ha's flags.enable_64bit_addressing set to indicated |
| 1041 | * supported addressing method. |
| 1042 | */ |
| 1043 | static void |
| 1044 | qla2x00_config_dma_addressing(scsi_qla_host_t *ha) |
| 1045 | { |
| 1046 | /* Assume 32bit DMA address */ |
| 1047 | ha->flags.enable_64bit_addressing = 0; |
| 1048 | ha->calc_request_entries = qla2x00_calc_iocbs_32; |
| 1049 | ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_32; |
| 1050 | |
| 1051 | /* |
| 1052 | * Given the two variants pci_set_dma_mask(), allow the compiler to |
| 1053 | * assist in setting the proper dma mask. |
| 1054 | */ |
| 1055 | if (sizeof(dma_addr_t) > 4) { |
| 1056 | if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) { |
| 1057 | ha->flags.enable_64bit_addressing = 1; |
| 1058 | ha->calc_request_entries = qla2x00_calc_iocbs_64; |
| 1059 | ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_64; |
| 1060 | |
| 1061 | if (pci_set_consistent_dma_mask(ha->pdev, |
| 1062 | DMA_64BIT_MASK)) { |
| 1063 | qla_printk(KERN_DEBUG, ha, |
| 1064 | "Failed to set 64 bit PCI consistent mask; " |
| 1065 | "using 32 bit.\n"); |
| 1066 | pci_set_consistent_dma_mask(ha->pdev, |
| 1067 | DMA_32BIT_MASK); |
| 1068 | } |
| 1069 | } else { |
| 1070 | qla_printk(KERN_DEBUG, ha, |
| 1071 | "Failed to set 64 bit PCI DMA mask, falling back " |
| 1072 | "to 32 bit MASK.\n"); |
| 1073 | pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); |
| 1074 | } |
| 1075 | } else { |
| 1076 | pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); |
| 1077 | } |
| 1078 | } |
| 1079 | |
| 1080 | static int |
| 1081 | qla2x00_iospace_config(scsi_qla_host_t *ha) |
| 1082 | { |
| 1083 | unsigned long pio, pio_len, pio_flags; |
| 1084 | unsigned long mmio, mmio_len, mmio_flags; |
| 1085 | |
| 1086 | /* We only need PIO for Flash operations on ISP2312 v2 chips. */ |
| 1087 | pio = pci_resource_start(ha->pdev, 0); |
| 1088 | pio_len = pci_resource_len(ha->pdev, 0); |
| 1089 | pio_flags = pci_resource_flags(ha->pdev, 0); |
| 1090 | if (pio_flags & IORESOURCE_IO) { |
| 1091 | if (pio_len < MIN_IOBASE_LEN) { |
| 1092 | qla_printk(KERN_WARNING, ha, |
| 1093 | "Invalid PCI I/O region size (%s)...\n", |
| 1094 | pci_name(ha->pdev)); |
| 1095 | pio = 0; |
| 1096 | } |
| 1097 | } else { |
| 1098 | qla_printk(KERN_WARNING, ha, |
| 1099 | "region #0 not a PIO resource (%s)...\n", |
| 1100 | pci_name(ha->pdev)); |
| 1101 | pio = 0; |
| 1102 | } |
| 1103 | |
| 1104 | /* Use MMIO operations for all accesses. */ |
| 1105 | mmio = pci_resource_start(ha->pdev, 1); |
| 1106 | mmio_len = pci_resource_len(ha->pdev, 1); |
| 1107 | mmio_flags = pci_resource_flags(ha->pdev, 1); |
| 1108 | |
| 1109 | if (!(mmio_flags & IORESOURCE_MEM)) { |
| 1110 | qla_printk(KERN_ERR, ha, |
| 1111 | "region #0 not an MMIO resource (%s), aborting\n", |
| 1112 | pci_name(ha->pdev)); |
| 1113 | goto iospace_error_exit; |
| 1114 | } |
| 1115 | if (mmio_len < MIN_IOBASE_LEN) { |
| 1116 | qla_printk(KERN_ERR, ha, |
| 1117 | "Invalid PCI mem region size (%s), aborting\n", |
| 1118 | pci_name(ha->pdev)); |
| 1119 | goto iospace_error_exit; |
| 1120 | } |
| 1121 | |
| 1122 | if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) { |
| 1123 | qla_printk(KERN_WARNING, ha, |
| 1124 | "Failed to reserve PIO/MMIO regions (%s)\n", |
| 1125 | pci_name(ha->pdev)); |
| 1126 | |
| 1127 | goto iospace_error_exit; |
| 1128 | } |
| 1129 | |
| 1130 | ha->pio_address = pio; |
| 1131 | ha->pio_length = pio_len; |
| 1132 | ha->iobase = ioremap(mmio, MIN_IOBASE_LEN); |
| 1133 | if (!ha->iobase) { |
| 1134 | qla_printk(KERN_ERR, ha, |
| 1135 | "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev)); |
| 1136 | |
| 1137 | goto iospace_error_exit; |
| 1138 | } |
| 1139 | |
| 1140 | return (0); |
| 1141 | |
| 1142 | iospace_error_exit: |
| 1143 | return (-ENOMEM); |
| 1144 | } |
| 1145 | |
| 1146 | /* |
| 1147 | * PCI driver interface |
| 1148 | */ |
| 1149 | int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info) |
| 1150 | { |
| 1151 | int ret; |
| 1152 | device_reg_t __iomem *reg; |
| 1153 | struct Scsi_Host *host; |
| 1154 | scsi_qla_host_t *ha; |
| 1155 | unsigned long flags = 0; |
| 1156 | unsigned long wait_switch = 0; |
| 1157 | char pci_info[20]; |
| 1158 | char fw_str[30]; |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1159 | fc_port_t *fcport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | |
| 1161 | if (pci_enable_device(pdev)) |
| 1162 | return -1; |
| 1163 | |
| 1164 | host = scsi_host_alloc(&qla2x00_driver_template, |
| 1165 | sizeof(scsi_qla_host_t)); |
| 1166 | if (host == NULL) { |
| 1167 | printk(KERN_WARNING |
| 1168 | "qla2xxx: Couldn't allocate host from scsi layer!\n"); |
| 1169 | goto probe_disable_device; |
| 1170 | } |
| 1171 | |
| 1172 | /* Clear our data area */ |
| 1173 | ha = (scsi_qla_host_t *)host->hostdata; |
| 1174 | memset(ha, 0, sizeof(scsi_qla_host_t)); |
| 1175 | |
| 1176 | ha->pdev = pdev; |
| 1177 | ha->host = host; |
| 1178 | ha->host_no = host->host_no; |
| 1179 | ha->brd_info = brd_info; |
| 1180 | sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no); |
| 1181 | |
| 1182 | /* Configure PCI I/O space */ |
| 1183 | ret = qla2x00_iospace_config(ha); |
| 1184 | if (ret != 0) { |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1185 | goto probe_alloc_failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | } |
| 1187 | |
| 1188 | /* Sanitize the information from PCI BIOS. */ |
| 1189 | host->irq = pdev->irq; |
| 1190 | |
| 1191 | qla_printk(KERN_INFO, ha, |
| 1192 | "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name, |
| 1193 | host->irq, ha->iobase); |
| 1194 | |
| 1195 | spin_lock_init(&ha->hardware_lock); |
| 1196 | |
| 1197 | /* 4.23 Initialize /proc/scsi/qla2x00 counters */ |
| 1198 | ha->actthreads = 0; |
| 1199 | ha->qthreads = 0; |
| 1200 | ha->total_isr_cnt = 0; |
| 1201 | ha->total_isp_aborts = 0; |
| 1202 | ha->total_lip_cnt = 0; |
| 1203 | ha->total_dev_errs = 0; |
| 1204 | ha->total_ios = 0; |
| 1205 | ha->total_bytes = 0; |
| 1206 | |
| 1207 | ha->prev_topology = 0; |
| 1208 | ha->ports = MAX_BUSES; |
| 1209 | |
| 1210 | if (IS_QLA2100(ha)) { |
| 1211 | ha->max_targets = MAX_TARGETS_2100; |
| 1212 | ha->mbx_count = MAILBOX_REGISTER_COUNT_2100; |
| 1213 | ha->request_q_length = REQUEST_ENTRY_CNT_2100; |
| 1214 | ha->response_q_length = RESPONSE_ENTRY_CNT_2100; |
| 1215 | ha->last_loop_id = SNS_LAST_LOOP_ID_2100; |
| 1216 | host->sg_tablesize = 32; |
| 1217 | } else if (IS_QLA2200(ha)) { |
| 1218 | ha->max_targets = MAX_TARGETS_2200; |
| 1219 | ha->mbx_count = MAILBOX_REGISTER_COUNT; |
| 1220 | ha->request_q_length = REQUEST_ENTRY_CNT_2200; |
| 1221 | ha->response_q_length = RESPONSE_ENTRY_CNT_2100; |
| 1222 | ha->last_loop_id = SNS_LAST_LOOP_ID_2100; |
| 1223 | } else /*if (IS_QLA2300(ha))*/ { |
| 1224 | ha->max_targets = MAX_TARGETS_2200; |
| 1225 | ha->mbx_count = MAILBOX_REGISTER_COUNT; |
| 1226 | ha->request_q_length = REQUEST_ENTRY_CNT_2200; |
| 1227 | ha->response_q_length = RESPONSE_ENTRY_CNT_2300; |
| 1228 | ha->last_loop_id = SNS_LAST_LOOP_ID_2300; |
| 1229 | } |
| 1230 | host->can_queue = ha->request_q_length + 128; |
| 1231 | |
| 1232 | /* load the F/W, read paramaters, and init the H/W */ |
| 1233 | ha->instance = num_hosts; |
| 1234 | |
| 1235 | init_MUTEX(&ha->mbx_cmd_sem); |
| 1236 | init_MUTEX_LOCKED(&ha->mbx_intr_sem); |
| 1237 | |
| 1238 | INIT_LIST_HEAD(&ha->list); |
| 1239 | INIT_LIST_HEAD(&ha->fcports); |
| 1240 | INIT_LIST_HEAD(&ha->rscn_fcports); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | |
| 1242 | /* |
| 1243 | * These locks are used to prevent more than one CPU |
| 1244 | * from modifying the queue at the same time. The |
| 1245 | * higher level "host_lock" will reduce most |
| 1246 | * contention for these locks. |
| 1247 | */ |
| 1248 | spin_lock_init(&ha->mbx_reg_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | |
| 1250 | ha->dpc_pid = -1; |
| 1251 | init_completion(&ha->dpc_inited); |
| 1252 | init_completion(&ha->dpc_exited); |
| 1253 | |
| 1254 | qla2x00_config_dma_addressing(ha); |
| 1255 | if (qla2x00_mem_alloc(ha)) { |
| 1256 | qla_printk(KERN_WARNING, ha, |
| 1257 | "[ERROR] Failed to allocate memory for adapter\n"); |
| 1258 | |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1259 | goto probe_alloc_failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | } |
| 1261 | |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1262 | pci_set_drvdata(pdev, ha); |
| 1263 | host->this_id = 255; |
| 1264 | host->cmd_per_lun = 3; |
| 1265 | host->unique_id = ha->instance; |
| 1266 | host->max_cmd_len = MAX_CMDSZ; |
| 1267 | host->max_channel = ha->ports - 1; |
| 1268 | host->max_id = ha->max_targets; |
| 1269 | host->max_lun = ha->max_luns; |
| 1270 | host->transportt = qla2xxx_transport_template; |
| 1271 | if (scsi_add_host(host, &pdev->dev)) |
| 1272 | goto probe_alloc_failed; |
| 1273 | |
| 1274 | qla2x00_alloc_sysfs_attr(ha); |
| 1275 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | if (qla2x00_initialize_adapter(ha) && |
| 1277 | !(ha->device_flags & DFLG_NO_CABLE)) { |
| 1278 | |
| 1279 | qla_printk(KERN_WARNING, ha, |
| 1280 | "Failed to initialize adapter\n"); |
| 1281 | |
| 1282 | DEBUG2(printk("scsi(%ld): Failed to initialize adapter - " |
| 1283 | "Adapter flags %x.\n", |
| 1284 | ha->host_no, ha->device_flags)); |
| 1285 | |
| 1286 | goto probe_failed; |
| 1287 | } |
| 1288 | |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1289 | qla2x00_init_host_attr(ha); |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 1290 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | /* |
| 1292 | * Startup the kernel thread for this host adapter |
| 1293 | */ |
| 1294 | ha->dpc_should_die = 0; |
| 1295 | ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0); |
| 1296 | if (ha->dpc_pid < 0) { |
| 1297 | qla_printk(KERN_WARNING, ha, |
| 1298 | "Unable to start DPC thread!\n"); |
| 1299 | |
| 1300 | goto probe_failed; |
| 1301 | } |
| 1302 | wait_for_completion(&ha->dpc_inited); |
| 1303 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | if (IS_QLA2100(ha) || IS_QLA2200(ha)) |
| 1305 | ret = request_irq(host->irq, qla2100_intr_handler, |
| 1306 | SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha); |
| 1307 | else |
| 1308 | ret = request_irq(host->irq, qla2300_intr_handler, |
| 1309 | SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha); |
| 1310 | if (ret != 0) { |
| 1311 | qla_printk(KERN_WARNING, ha, |
| 1312 | "Failed to reserve interrupt %d already in use.\n", |
| 1313 | host->irq); |
| 1314 | goto probe_failed; |
| 1315 | } |
| 1316 | |
| 1317 | /* Initialized the timer */ |
| 1318 | qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL); |
| 1319 | |
| 1320 | DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n", |
| 1321 | ha->host_no, ha)); |
| 1322 | |
| 1323 | reg = ha->iobase; |
| 1324 | |
| 1325 | /* Disable ISP interrupts. */ |
| 1326 | qla2x00_disable_intrs(ha); |
| 1327 | |
| 1328 | /* Ensure mailbox registers are free. */ |
| 1329 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 1330 | WRT_REG_WORD(®->semaphore, 0); |
| 1331 | WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); |
| 1332 | WRT_REG_WORD(®->hccr, HCCR_CLR_HOST_INT); |
| 1333 | |
| 1334 | /* Enable proper parity */ |
| 1335 | if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) { |
| 1336 | if (IS_QLA2300(ha)) |
| 1337 | /* SRAM parity */ |
| 1338 | WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x1)); |
| 1339 | else |
| 1340 | /* SRAM, Instruction RAM and GP RAM parity */ |
| 1341 | WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x7)); |
| 1342 | } |
| 1343 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 1344 | |
| 1345 | /* Enable chip interrupts. */ |
| 1346 | qla2x00_enable_intrs(ha); |
| 1347 | |
| 1348 | /* v2.19.5b6 */ |
| 1349 | /* |
| 1350 | * Wait around max loop_reset_delay secs for the devices to come |
| 1351 | * on-line. We don't want Linux scanning before we are ready. |
| 1352 | * |
| 1353 | */ |
| 1354 | for (wait_switch = jiffies + (ha->loop_reset_delay * HZ); |
| 1355 | time_before(jiffies,wait_switch) && |
| 1356 | !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES)) |
| 1357 | && (ha->device_flags & SWITCH_FOUND) ;) { |
| 1358 | |
| 1359 | qla2x00_check_fabric_devices(ha); |
| 1360 | |
| 1361 | msleep(10); |
| 1362 | } |
| 1363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | ha->flags.init_done = 1; |
| 1365 | num_hosts++; |
| 1366 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | qla_printk(KERN_INFO, ha, "\n" |
| 1368 | " QLogic Fibre Channel HBA Driver: %s\n" |
| 1369 | " QLogic %s - %s\n" |
| 1370 | " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str, |
| 1371 | ha->model_number, ha->model_desc ? ha->model_desc: "", |
| 1372 | ha->brd_info->isp_name, qla2x00_get_pci_info_str(ha, pci_info), |
| 1373 | pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-', |
| 1374 | ha->host_no, qla2x00_get_fw_version_str(ha, fw_str)); |
| 1375 | |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1376 | /* Go with fc_rport registration. */ |
| 1377 | list_for_each_entry(fcport, &ha->fcports, list) |
| 1378 | qla2x00_reg_remote_port(ha, fcport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | |
| 1380 | return 0; |
| 1381 | |
| 1382 | probe_failed: |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 1383 | fc_remove_host(ha->host); |
| 1384 | |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1385 | scsi_remove_host(host); |
| 1386 | |
| 1387 | probe_alloc_failed: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | qla2x00_free_device(ha); |
| 1389 | |
| 1390 | scsi_host_put(host); |
| 1391 | |
| 1392 | probe_disable_device: |
| 1393 | pci_disable_device(pdev); |
| 1394 | |
| 1395 | return -1; |
| 1396 | } |
| 1397 | EXPORT_SYMBOL_GPL(qla2x00_probe_one); |
| 1398 | |
| 1399 | void qla2x00_remove_one(struct pci_dev *pdev) |
| 1400 | { |
| 1401 | scsi_qla_host_t *ha; |
| 1402 | |
| 1403 | ha = pci_get_drvdata(pdev); |
| 1404 | |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1405 | qla2x00_free_sysfs_attr(ha); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 1407 | fc_remove_host(ha->host); |
| 1408 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1409 | scsi_remove_host(ha->host); |
| 1410 | |
| 1411 | qla2x00_free_device(ha); |
| 1412 | |
| 1413 | scsi_host_put(ha->host); |
| 1414 | |
| 1415 | pci_set_drvdata(pdev, NULL); |
| 1416 | } |
| 1417 | EXPORT_SYMBOL_GPL(qla2x00_remove_one); |
| 1418 | |
| 1419 | static void |
| 1420 | qla2x00_free_device(scsi_qla_host_t *ha) |
| 1421 | { |
| 1422 | int ret; |
| 1423 | |
| 1424 | /* Abort any outstanding IO descriptors. */ |
| 1425 | if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) |
| 1426 | qla2x00_cancel_io_descriptors(ha); |
| 1427 | |
| 1428 | /* turn-off interrupts on the card */ |
| 1429 | if (ha->interrupts_on) |
| 1430 | qla2x00_disable_intrs(ha); |
| 1431 | |
| 1432 | /* Disable timer */ |
| 1433 | if (ha->timer_active) |
| 1434 | qla2x00_stop_timer(ha); |
| 1435 | |
| 1436 | /* Kill the kernel thread for this host */ |
| 1437 | if (ha->dpc_pid >= 0) { |
| 1438 | ha->dpc_should_die = 1; |
| 1439 | wmb(); |
| 1440 | ret = kill_proc(ha->dpc_pid, SIGHUP, 1); |
| 1441 | if (ret) { |
| 1442 | qla_printk(KERN_ERR, ha, |
| 1443 | "Unable to signal DPC thread -- (%d)\n", ret); |
| 1444 | |
| 1445 | /* TODO: SOMETHING MORE??? */ |
| 1446 | } else { |
| 1447 | wait_for_completion(&ha->dpc_exited); |
| 1448 | } |
| 1449 | } |
| 1450 | |
| 1451 | qla2x00_mem_free(ha); |
| 1452 | |
| 1453 | |
| 1454 | ha->flags.online = 0; |
| 1455 | |
| 1456 | /* Detach interrupts */ |
| 1457 | if (ha->pdev->irq) |
| 1458 | free_irq(ha->pdev->irq, ha); |
| 1459 | |
| 1460 | /* release io space registers */ |
| 1461 | if (ha->iobase) |
| 1462 | iounmap(ha->iobase); |
| 1463 | pci_release_regions(ha->pdev); |
| 1464 | |
| 1465 | pci_disable_device(ha->pdev); |
| 1466 | } |
| 1467 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | * qla2x00_mark_device_lost Updates fcport state when device goes offline. |
| 1470 | * |
| 1471 | * Input: ha = adapter block pointer. fcport = port structure pointer. |
| 1472 | * |
| 1473 | * Return: None. |
| 1474 | * |
| 1475 | * Context: |
| 1476 | */ |
| 1477 | void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport, |
| 1478 | int do_login) |
| 1479 | { |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1480 | if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport) |
| 1481 | fc_remote_port_block(fcport->rport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | /* |
| 1483 | * We may need to retry the login, so don't change the state of the |
| 1484 | * port but do the retries. |
| 1485 | */ |
| 1486 | if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD) |
| 1487 | atomic_set(&fcport->state, FCS_DEVICE_LOST); |
| 1488 | |
| 1489 | if (!do_login) |
| 1490 | return; |
| 1491 | |
| 1492 | if (fcport->login_retry == 0) { |
| 1493 | fcport->login_retry = ha->login_retry_count; |
| 1494 | set_bit(RELOGIN_NEEDED, &ha->dpc_flags); |
| 1495 | |
| 1496 | DEBUG(printk("scsi(%ld): Port login retry: " |
| 1497 | "%02x%02x%02x%02x%02x%02x%02x%02x, " |
| 1498 | "id = 0x%04x retry cnt=%d\n", |
| 1499 | ha->host_no, |
| 1500 | fcport->port_name[0], |
| 1501 | fcport->port_name[1], |
| 1502 | fcport->port_name[2], |
| 1503 | fcport->port_name[3], |
| 1504 | fcport->port_name[4], |
| 1505 | fcport->port_name[5], |
| 1506 | fcport->port_name[6], |
| 1507 | fcport->port_name[7], |
| 1508 | fcport->loop_id, |
| 1509 | fcport->login_retry)); |
| 1510 | } |
| 1511 | } |
| 1512 | |
| 1513 | /* |
| 1514 | * qla2x00_mark_all_devices_lost |
| 1515 | * Updates fcport state when device goes offline. |
| 1516 | * |
| 1517 | * Input: |
| 1518 | * ha = adapter block pointer. |
| 1519 | * fcport = port structure pointer. |
| 1520 | * |
| 1521 | * Return: |
| 1522 | * None. |
| 1523 | * |
| 1524 | * Context: |
| 1525 | */ |
| 1526 | void |
| 1527 | qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha) |
| 1528 | { |
| 1529 | fc_port_t *fcport; |
| 1530 | |
| 1531 | list_for_each_entry(fcport, &ha->fcports, list) { |
| 1532 | if (fcport->port_type != FCT_TARGET) |
| 1533 | continue; |
| 1534 | |
| 1535 | /* |
| 1536 | * No point in marking the device as lost, if the device is |
| 1537 | * already DEAD. |
| 1538 | */ |
| 1539 | if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD) |
| 1540 | continue; |
| 8482e11 | 2005-04-17 15:04:54 -0500 | [diff] [blame] | 1541 | if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport) |
| 1542 | fc_remote_port_block(fcport->rport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | atomic_set(&fcport->state, FCS_DEVICE_LOST); |
| 1544 | } |
| 1545 | } |
| 1546 | |
| 1547 | /* |
| 1548 | * qla2x00_mem_alloc |
| 1549 | * Allocates adapter memory. |
| 1550 | * |
| 1551 | * Returns: |
| 1552 | * 0 = success. |
| 1553 | * 1 = failure. |
| 1554 | */ |
| 1555 | static uint8_t |
| 1556 | qla2x00_mem_alloc(scsi_qla_host_t *ha) |
| 1557 | { |
| 1558 | char name[16]; |
| 1559 | uint8_t status = 1; |
| 1560 | int retry= 10; |
| 1561 | |
| 1562 | do { |
| 1563 | /* |
| 1564 | * This will loop only once if everything goes well, else some |
| 1565 | * number of retries will be performed to get around a kernel |
| 1566 | * bug where available mem is not allocated until after a |
| 1567 | * little delay and a retry. |
| 1568 | */ |
| 1569 | ha->request_ring = dma_alloc_coherent(&ha->pdev->dev, |
| 1570 | (ha->request_q_length + 1) * sizeof(request_t), |
| 1571 | &ha->request_dma, GFP_KERNEL); |
| 1572 | if (ha->request_ring == NULL) { |
| 1573 | qla_printk(KERN_WARNING, ha, |
| 1574 | "Memory Allocation failed - request_ring\n"); |
| 1575 | |
| 1576 | qla2x00_mem_free(ha); |
| 1577 | msleep(100); |
| 1578 | |
| 1579 | continue; |
| 1580 | } |
| 1581 | |
| 1582 | ha->response_ring = dma_alloc_coherent(&ha->pdev->dev, |
| 1583 | (ha->response_q_length + 1) * sizeof(response_t), |
| 1584 | &ha->response_dma, GFP_KERNEL); |
| 1585 | if (ha->response_ring == NULL) { |
| 1586 | qla_printk(KERN_WARNING, ha, |
| 1587 | "Memory Allocation failed - response_ring\n"); |
| 1588 | |
| 1589 | qla2x00_mem_free(ha); |
| 1590 | msleep(100); |
| 1591 | |
| 1592 | continue; |
| 1593 | } |
| 1594 | |
| 1595 | ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE, |
| 1596 | &ha->gid_list_dma, GFP_KERNEL); |
| 1597 | if (ha->gid_list == NULL) { |
| 1598 | qla_printk(KERN_WARNING, ha, |
| 1599 | "Memory Allocation failed - gid_list\n"); |
| 1600 | |
| 1601 | qla2x00_mem_free(ha); |
| 1602 | msleep(100); |
| 1603 | |
| 1604 | continue; |
| 1605 | } |
| 1606 | |
| 1607 | ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev, |
| 1608 | sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL); |
| 1609 | if (ha->rlc_rsp == NULL) { |
| 1610 | qla_printk(KERN_WARNING, ha, |
| 1611 | "Memory Allocation failed - rlc"); |
| 1612 | |
| 1613 | qla2x00_mem_free(ha); |
| 1614 | msleep(100); |
| 1615 | |
| 1616 | continue; |
| 1617 | } |
| 1618 | |
| 1619 | snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no); |
| 1620 | ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev, |
| 1621 | DMA_POOL_SIZE, 8, 0); |
| 1622 | if (ha->s_dma_pool == NULL) { |
| 1623 | qla_printk(KERN_WARNING, ha, |
| 1624 | "Memory Allocation failed - s_dma_pool\n"); |
| 1625 | |
| 1626 | qla2x00_mem_free(ha); |
| 1627 | msleep(100); |
| 1628 | |
| 1629 | continue; |
| 1630 | } |
| 1631 | |
| 1632 | /* get consistent memory allocated for init control block */ |
| 1633 | ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, |
| 1634 | &ha->init_cb_dma); |
| 1635 | if (ha->init_cb == NULL) { |
| 1636 | qla_printk(KERN_WARNING, ha, |
| 1637 | "Memory Allocation failed - init_cb\n"); |
| 1638 | |
| 1639 | qla2x00_mem_free(ha); |
| 1640 | msleep(100); |
| 1641 | |
| 1642 | continue; |
| 1643 | } |
| 1644 | memset(ha->init_cb, 0, sizeof(init_cb_t)); |
| 1645 | |
| 1646 | /* Get consistent memory allocated for Get Port Database cmd */ |
| 1647 | ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, |
| 1648 | &ha->iodesc_pd_dma); |
| 1649 | if (ha->iodesc_pd == NULL) { |
| 1650 | /* error */ |
| 1651 | qla_printk(KERN_WARNING, ha, |
| 1652 | "Memory Allocation failed - iodesc_pd\n"); |
| 1653 | |
| 1654 | qla2x00_mem_free(ha); |
| 1655 | msleep(100); |
| 1656 | |
| 1657 | continue; |
| 1658 | } |
| 1659 | memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE); |
| 1660 | |
| 1661 | /* Allocate ioctl related memory. */ |
| 1662 | if (qla2x00_alloc_ioctl_mem(ha)) { |
| 1663 | qla_printk(KERN_WARNING, ha, |
| 1664 | "Memory Allocation failed - ioctl_mem\n"); |
| 1665 | |
| 1666 | qla2x00_mem_free(ha); |
| 1667 | msleep(100); |
| 1668 | |
| 1669 | continue; |
| 1670 | } |
| 1671 | |
| 1672 | if (qla2x00_allocate_sp_pool(ha)) { |
| 1673 | qla_printk(KERN_WARNING, ha, |
| 1674 | "Memory Allocation failed - " |
| 1675 | "qla2x00_allocate_sp_pool()\n"); |
| 1676 | |
| 1677 | qla2x00_mem_free(ha); |
| 1678 | msleep(100); |
| 1679 | |
| 1680 | continue; |
| 1681 | } |
| 1682 | |
| 1683 | /* Allocate memory for SNS commands */ |
| 1684 | if (IS_QLA2100(ha) || IS_QLA2200(ha)) { |
| 1685 | /* Get consistent memory allocated for SNS commands */ |
| 1686 | ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev, |
| 1687 | sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma, |
| 1688 | GFP_KERNEL); |
| 1689 | if (ha->sns_cmd == NULL) { |
| 1690 | /* error */ |
| 1691 | qla_printk(KERN_WARNING, ha, |
| 1692 | "Memory Allocation failed - sns_cmd\n"); |
| 1693 | |
| 1694 | qla2x00_mem_free(ha); |
| 1695 | msleep(100); |
| 1696 | |
| 1697 | continue; |
| 1698 | } |
| 1699 | memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt)); |
| 1700 | } else { |
| 1701 | /* Get consistent memory allocated for MS IOCB */ |
| 1702 | ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, |
| 1703 | &ha->ms_iocb_dma); |
| 1704 | if (ha->ms_iocb == NULL) { |
| 1705 | /* error */ |
| 1706 | qla_printk(KERN_WARNING, ha, |
| 1707 | "Memory Allocation failed - ms_iocb\n"); |
| 1708 | |
| 1709 | qla2x00_mem_free(ha); |
| 1710 | msleep(100); |
| 1711 | |
| 1712 | continue; |
| 1713 | } |
| 1714 | memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t)); |
| 1715 | |
| 1716 | /* |
| 1717 | * Get consistent memory allocated for CT SNS |
| 1718 | * commands |
| 1719 | */ |
| 1720 | ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev, |
| 1721 | sizeof(struct ct_sns_pkt), &ha->ct_sns_dma, |
| 1722 | GFP_KERNEL); |
| 1723 | if (ha->ct_sns == NULL) { |
| 1724 | /* error */ |
| 1725 | qla_printk(KERN_WARNING, ha, |
| 1726 | "Memory Allocation failed - ct_sns\n"); |
| 1727 | |
| 1728 | qla2x00_mem_free(ha); |
| 1729 | msleep(100); |
| 1730 | |
| 1731 | continue; |
| 1732 | } |
| 1733 | memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt)); |
| 1734 | } |
| 1735 | |
| 1736 | /* Done all allocations without any error. */ |
| 1737 | status = 0; |
| 1738 | |
| 1739 | } while (retry-- && status != 0); |
| 1740 | |
| 1741 | if (status) { |
| 1742 | printk(KERN_WARNING |
| 1743 | "%s(): **** FAILED ****\n", __func__); |
| 1744 | } |
| 1745 | |
| 1746 | return(status); |
| 1747 | } |
| 1748 | |
| 1749 | /* |
| 1750 | * qla2x00_mem_free |
| 1751 | * Frees all adapter allocated memory. |
| 1752 | * |
| 1753 | * Input: |
| 1754 | * ha = adapter block pointer. |
| 1755 | */ |
| 1756 | static void |
| 1757 | qla2x00_mem_free(scsi_qla_host_t *ha) |
| 1758 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | struct list_head *fcpl, *fcptemp; |
| 1760 | fc_port_t *fcport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | unsigned long wtime;/* max wait time if mbx cmd is busy. */ |
| 1762 | |
| 1763 | if (ha == NULL) { |
| 1764 | /* error */ |
| 1765 | DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__)); |
| 1766 | return; |
| 1767 | } |
| 1768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | /* Make sure all other threads are stopped. */ |
| 1770 | wtime = 60 * HZ; |
| 1771 | while (ha->dpc_wait && wtime) { |
| 1772 | set_current_state(TASK_INTERRUPTIBLE); |
| 1773 | wtime = schedule_timeout(wtime); |
| 1774 | } |
| 1775 | |
| 1776 | /* free ioctl memory */ |
| 1777 | qla2x00_free_ioctl_mem(ha); |
| 1778 | |
| 1779 | /* free sp pool */ |
| 1780 | qla2x00_free_sp_pool(ha); |
| 1781 | |
| 1782 | if (ha->sns_cmd) |
| 1783 | dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt), |
| 1784 | ha->sns_cmd, ha->sns_cmd_dma); |
| 1785 | |
| 1786 | if (ha->ct_sns) |
| 1787 | dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt), |
| 1788 | ha->ct_sns, ha->ct_sns_dma); |
| 1789 | |
| 1790 | if (ha->ms_iocb) |
| 1791 | dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma); |
| 1792 | |
| 1793 | if (ha->iodesc_pd) |
| 1794 | dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma); |
| 1795 | |
| 1796 | if (ha->init_cb) |
| 1797 | dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma); |
| 1798 | |
| 1799 | if (ha->s_dma_pool) |
| 1800 | dma_pool_destroy(ha->s_dma_pool); |
| 1801 | |
| 1802 | if (ha->rlc_rsp) |
| 1803 | dma_free_coherent(&ha->pdev->dev, |
| 1804 | sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp, |
| 1805 | ha->rlc_rsp_dma); |
| 1806 | |
| 1807 | if (ha->gid_list) |
| 1808 | dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list, |
| 1809 | ha->gid_list_dma); |
| 1810 | |
| 1811 | if (ha->response_ring) |
| 1812 | dma_free_coherent(&ha->pdev->dev, |
| 1813 | (ha->response_q_length + 1) * sizeof(response_t), |
| 1814 | ha->response_ring, ha->response_dma); |
| 1815 | |
| 1816 | if (ha->request_ring) |
| 1817 | dma_free_coherent(&ha->pdev->dev, |
| 1818 | (ha->request_q_length + 1) * sizeof(request_t), |
| 1819 | ha->request_ring, ha->request_dma); |
| 1820 | |
| 1821 | ha->sns_cmd = NULL; |
| 1822 | ha->sns_cmd_dma = 0; |
| 1823 | ha->ct_sns = NULL; |
| 1824 | ha->ct_sns_dma = 0; |
| 1825 | ha->ms_iocb = NULL; |
| 1826 | ha->ms_iocb_dma = 0; |
| 1827 | ha->iodesc_pd = NULL; |
| 1828 | ha->iodesc_pd_dma = 0; |
| 1829 | ha->init_cb = NULL; |
| 1830 | ha->init_cb_dma = 0; |
| 1831 | |
| 1832 | ha->s_dma_pool = NULL; |
| 1833 | |
| 1834 | ha->rlc_rsp = NULL; |
| 1835 | ha->rlc_rsp_dma = 0; |
| 1836 | ha->gid_list = NULL; |
| 1837 | ha->gid_list_dma = 0; |
| 1838 | |
| 1839 | ha->response_ring = NULL; |
| 1840 | ha->response_dma = 0; |
| 1841 | ha->request_ring = NULL; |
| 1842 | ha->request_dma = 0; |
| 1843 | |
| 1844 | list_for_each_safe(fcpl, fcptemp, &ha->fcports) { |
| 1845 | fcport = list_entry(fcpl, fc_port_t, list); |
| 1846 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | /* fc ports */ |
| 1848 | list_del_init(&fcport->list); |
| 1849 | kfree(fcport); |
| 1850 | } |
| 1851 | INIT_LIST_HEAD(&ha->fcports); |
| 1852 | |
| 1853 | if (ha->fw_dump) |
| 1854 | free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order); |
| 1855 | |
| 1856 | if (ha->fw_dump_buffer) |
| 1857 | vfree(ha->fw_dump_buffer); |
| 1858 | |
| 1859 | ha->fw_dump = NULL; |
| 1860 | ha->fw_dump_reading = 0; |
| 1861 | ha->fw_dump_buffer = NULL; |
| 1862 | } |
| 1863 | |
| 1864 | /* |
| 1865 | * qla2x00_allocate_sp_pool |
| 1866 | * This routine is called during initialization to allocate |
| 1867 | * memory for local srb_t. |
| 1868 | * |
| 1869 | * Input: |
| 1870 | * ha = adapter block pointer. |
| 1871 | * |
| 1872 | * Context: |
| 1873 | * Kernel context. |
| 1874 | * |
| 1875 | * Note: Sets the ref_count for non Null sp to one. |
| 1876 | */ |
| 1877 | static int |
| 1878 | qla2x00_allocate_sp_pool(scsi_qla_host_t *ha) |
| 1879 | { |
| 1880 | int rval; |
| 1881 | |
| 1882 | rval = QLA_SUCCESS; |
| 1883 | ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, |
| 1884 | mempool_free_slab, srb_cachep); |
| 1885 | if (ha->srb_mempool == NULL) { |
| 1886 | qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n"); |
| 1887 | rval = QLA_FUNCTION_FAILED; |
| 1888 | } |
| 1889 | return (rval); |
| 1890 | } |
| 1891 | |
| 1892 | /* |
| 1893 | * This routine frees all adapter allocated memory. |
| 1894 | * |
| 1895 | */ |
| 1896 | static void |
| 1897 | qla2x00_free_sp_pool( scsi_qla_host_t *ha) |
| 1898 | { |
| 1899 | if (ha->srb_mempool) { |
| 1900 | mempool_destroy(ha->srb_mempool); |
| 1901 | ha->srb_mempool = NULL; |
| 1902 | } |
| 1903 | } |
| 1904 | |
| 1905 | /************************************************************************** |
| 1906 | * qla2x00_do_dpc |
| 1907 | * This kernel thread is a task that is schedule by the interrupt handler |
| 1908 | * to perform the background processing for interrupts. |
| 1909 | * |
| 1910 | * Notes: |
| 1911 | * This task always run in the context of a kernel thread. It |
| 1912 | * is kick-off by the driver's detect code and starts up |
| 1913 | * up one per adapter. It immediately goes to sleep and waits for |
| 1914 | * some fibre event. When either the interrupt handler or |
| 1915 | * the timer routine detects a event it will one of the task |
| 1916 | * bits then wake us up. |
| 1917 | **************************************************************************/ |
| 1918 | static int |
| 1919 | qla2x00_do_dpc(void *data) |
| 1920 | { |
| 1921 | DECLARE_MUTEX_LOCKED(sem); |
| 1922 | scsi_qla_host_t *ha; |
| 1923 | fc_port_t *fcport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1924 | uint8_t status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | uint16_t next_loopid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1926 | |
| 1927 | ha = (scsi_qla_host_t *)data; |
| 1928 | |
| 1929 | lock_kernel(); |
| 1930 | |
| 1931 | daemonize("%s_dpc", ha->host_str); |
| 1932 | allow_signal(SIGHUP); |
| 1933 | |
| 1934 | ha->dpc_wait = &sem; |
| 1935 | |
| 1936 | set_user_nice(current, -20); |
| 1937 | |
| 1938 | unlock_kernel(); |
| 1939 | |
| 1940 | complete(&ha->dpc_inited); |
| 1941 | |
| 1942 | while (1) { |
| 1943 | DEBUG3(printk("qla2x00: DPC handler sleeping\n")); |
| 1944 | |
| 1945 | if (down_interruptible(&sem)) |
| 1946 | break; |
| 1947 | |
| 1948 | if (ha->dpc_should_die) |
| 1949 | break; |
| 1950 | |
| 1951 | DEBUG3(printk("qla2x00: DPC handler waking up\n")); |
| 1952 | |
| 1953 | /* Initialization not yet finished. Don't do anything yet. */ |
| 1954 | if (!ha->flags.init_done || ha->dpc_active) |
| 1955 | continue; |
| 1956 | |
| 1957 | DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no)); |
| 1958 | |
| 1959 | ha->dpc_active = 1; |
| 1960 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1961 | if (ha->flags.mbox_busy) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1962 | ha->dpc_active = 0; |
| 1963 | continue; |
| 1964 | } |
| 1965 | |
| 1966 | if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) { |
| 1967 | |
| 1968 | DEBUG(printk("scsi(%ld): dpc: sched " |
| 1969 | "qla2x00_abort_isp ha = %p\n", |
| 1970 | ha->host_no, ha)); |
| 1971 | if (!(test_and_set_bit(ABORT_ISP_ACTIVE, |
| 1972 | &ha->dpc_flags))) { |
| 1973 | |
| 1974 | if (qla2x00_abort_isp(ha)) { |
| 1975 | /* failed. retry later */ |
| 1976 | set_bit(ISP_ABORT_NEEDED, |
| 1977 | &ha->dpc_flags); |
| 1978 | } |
| 1979 | clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); |
| 1980 | } |
| 1981 | DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n", |
| 1982 | ha->host_no)); |
| 1983 | } |
| 1984 | |
| 1985 | if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) && |
| 1986 | (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) { |
| 1987 | |
| 1988 | DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n", |
| 1989 | ha->host_no)); |
| 1990 | |
| 1991 | qla2x00_rst_aen(ha); |
| 1992 | clear_bit(RESET_ACTIVE, &ha->dpc_flags); |
| 1993 | } |
| 1994 | |
| 1995 | /* Retry each device up to login retry count */ |
| 1996 | if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) && |
| 1997 | !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) && |
| 1998 | atomic_read(&ha->loop_state) != LOOP_DOWN) { |
| 1999 | |
| 2000 | DEBUG(printk("scsi(%ld): qla2x00_port_login()\n", |
| 2001 | ha->host_no)); |
| 2002 | |
| 2003 | next_loopid = 0; |
| 2004 | list_for_each_entry(fcport, &ha->fcports, list) { |
| 2005 | if (fcport->port_type != FCT_TARGET) |
| 2006 | continue; |
| 2007 | |
| 2008 | /* |
| 2009 | * If the port is not ONLINE then try to login |
| 2010 | * to it if we haven't run out of retries. |
| 2011 | */ |
| 2012 | if (atomic_read(&fcport->state) != FCS_ONLINE && |
| 2013 | fcport->login_retry) { |
| 2014 | |
| 2015 | fcport->login_retry--; |
| 2016 | if (fcport->flags & FCF_FABRIC_DEVICE) { |
| 2017 | if (fcport->flags & |
| 2018 | FCF_TAPE_PRESENT) |
| 2019 | qla2x00_fabric_logout( |
| 2020 | ha, |
| 2021 | fcport->loop_id); |
| 2022 | status = qla2x00_fabric_login( |
| 2023 | ha, fcport, &next_loopid); |
| 2024 | } else |
| 2025 | status = |
| 2026 | qla2x00_local_device_login( |
| 2027 | ha, fcport->loop_id); |
| 2028 | |
| 2029 | if (status == QLA_SUCCESS) { |
| 2030 | fcport->old_loop_id = fcport->loop_id; |
| 2031 | |
| 2032 | DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n", |
| 2033 | ha->host_no, fcport->loop_id)); |
| 2034 | |
| 2035 | fcport->port_login_retry_count = |
| 2036 | ha->port_down_retry_count * PORT_RETRY_TIME; |
| 2037 | atomic_set(&fcport->state, FCS_ONLINE); |
| 2038 | atomic_set(&fcport->port_down_timer, |
| 2039 | ha->port_down_retry_count * PORT_RETRY_TIME); |
| 2040 | |
| 2041 | fcport->login_retry = 0; |
| 2042 | } else if (status == 1) { |
| 2043 | set_bit(RELOGIN_NEEDED, &ha->dpc_flags); |
| 2044 | /* retry the login again */ |
| 2045 | DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n", |
| 2046 | ha->host_no, |
| 2047 | fcport->login_retry, fcport->loop_id)); |
| 2048 | } else { |
| 2049 | fcport->login_retry = 0; |
| 2050 | } |
| 2051 | } |
| 2052 | if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) |
| 2053 | break; |
| 2054 | } |
| 2055 | DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n", |
| 2056 | ha->host_no)); |
| 2057 | } |
| 2058 | |
| 2059 | if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) && |
| 2060 | atomic_read(&ha->loop_state) != LOOP_DOWN) { |
| 2061 | |
| 2062 | clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags); |
| 2063 | DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n", |
| 2064 | ha->host_no)); |
| 2065 | |
| 2066 | set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); |
| 2067 | |
| 2068 | DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n", |
| 2069 | ha->host_no)); |
| 2070 | } |
| 2071 | |
| 2072 | if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) { |
| 2073 | |
| 2074 | DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n", |
| 2075 | ha->host_no)); |
| 2076 | |
| 2077 | if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, |
| 2078 | &ha->dpc_flags))) { |
| 2079 | |
| 2080 | qla2x00_loop_resync(ha); |
| 2081 | |
| 2082 | clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags); |
| 2083 | } |
| 2084 | |
| 2085 | DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n", |
| 2086 | ha->host_no)); |
| 2087 | } |
| 2088 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2089 | if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) { |
| 2090 | |
| 2091 | DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n", |
| 2092 | ha->host_no)); |
| 2093 | |
| 2094 | qla2x00_rescan_fcports(ha); |
| 2095 | |
| 2096 | DEBUG(printk("scsi(%ld): Rescan flagged fcports..." |
| 2097 | "end.\n", |
| 2098 | ha->host_no)); |
| 2099 | } |
| 2100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | if (!ha->interrupts_on) |
| 2102 | qla2x00_enable_intrs(ha); |
| 2103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | ha->dpc_active = 0; |
| 2105 | } /* End of while(1) */ |
| 2106 | |
| 2107 | DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no)); |
| 2108 | |
| 2109 | /* |
| 2110 | * Make sure that nobody tries to wake us up again. |
| 2111 | */ |
| 2112 | ha->dpc_wait = NULL; |
| 2113 | ha->dpc_active = 0; |
| 2114 | |
| 2115 | complete_and_exit(&ha->dpc_exited, 0); |
| 2116 | } |
| 2117 | |
| 2118 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2119 | * qla2x00_rst_aen |
| 2120 | * Processes asynchronous reset. |
| 2121 | * |
| 2122 | * Input: |
| 2123 | * ha = adapter block pointer. |
| 2124 | */ |
| 2125 | static void |
| 2126 | qla2x00_rst_aen(scsi_qla_host_t *ha) |
| 2127 | { |
| 2128 | if (ha->flags.online && !ha->flags.reset_active && |
| 2129 | !atomic_read(&ha->loop_down_timer) && |
| 2130 | !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) { |
| 2131 | do { |
| 2132 | clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); |
| 2133 | |
| 2134 | /* |
| 2135 | * Issue marker command only when we are going to start |
| 2136 | * the I/O. |
| 2137 | */ |
| 2138 | ha->marker_needed = 1; |
| 2139 | } while (!atomic_read(&ha->loop_down_timer) && |
| 2140 | (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags))); |
| 2141 | } |
| 2142 | } |
| 2143 | |
| 2144 | |
| 2145 | /* |
| 2146 | * This routine will allocate SP from the free queue |
| 2147 | * input: |
| 2148 | * scsi_qla_host_t * |
| 2149 | * output: |
| 2150 | * srb_t * or NULL |
| 2151 | */ |
| 2152 | static srb_t * |
| 2153 | qla2x00_get_new_sp(scsi_qla_host_t *ha) |
| 2154 | { |
| 2155 | srb_t *sp; |
| 2156 | |
| 2157 | sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); |
| 2158 | if (sp) |
| 2159 | atomic_set(&sp->ref_count, 1); |
| 2160 | return (sp); |
| 2161 | } |
| 2162 | |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 2163 | static void |
| 2164 | qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp) |
| 2165 | { |
| 2166 | struct scsi_cmnd *cmd = sp->cmd; |
| 2167 | |
| 2168 | if (sp->flags & SRB_DMA_VALID) { |
| 2169 | if (cmd->use_sg) { |
| 2170 | dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer, |
| 2171 | cmd->use_sg, cmd->sc_data_direction); |
| 2172 | } else if (cmd->request_bufflen) { |
| 2173 | dma_unmap_single(&ha->pdev->dev, sp->dma_handle, |
| 2174 | cmd->request_bufflen, cmd->sc_data_direction); |
| 2175 | } |
| 2176 | sp->flags &= ~SRB_DMA_VALID; |
| 2177 | } |
| 2178 | } |
| 2179 | |
| 2180 | void |
| 2181 | qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp) |
| 2182 | { |
| 2183 | struct scsi_cmnd *cmd = sp->cmd; |
| 2184 | |
| 2185 | qla2x00_sp_free_dma(ha, sp); |
| 2186 | |
| 2187 | CMD_SP(cmd) = NULL; |
| 2188 | mempool_free(sp, ha->srb_mempool); |
| 2189 | |
| 2190 | cmd->scsi_done(cmd); |
| 2191 | } |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 2192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2193 | /************************************************************************** |
| 2194 | * qla2x00_timer |
| 2195 | * |
| 2196 | * Description: |
| 2197 | * One second timer |
| 2198 | * |
| 2199 | * Context: Interrupt |
| 2200 | ***************************************************************************/ |
| 2201 | static void |
| 2202 | qla2x00_timer(scsi_qla_host_t *ha) |
| 2203 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2204 | unsigned long cpu_flags = 0; |
| 2205 | fc_port_t *fcport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2206 | int start_dpc = 0; |
| 2207 | int index; |
| 2208 | srb_t *sp; |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 2209 | int t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | |
| 2211 | /* |
| 2212 | * Ports - Port down timer. |
| 2213 | * |
| 2214 | * Whenever, a port is in the LOST state we start decrementing its port |
| 2215 | * down timer every second until it reaches zero. Once it reaches zero |
| 2216 | * the port it marked DEAD. |
| 2217 | */ |
| 2218 | t = 0; |
| 2219 | list_for_each_entry(fcport, &ha->fcports, list) { |
| 2220 | if (fcport->port_type != FCT_TARGET) |
| 2221 | continue; |
| 2222 | |
| 2223 | if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) { |
| 2224 | |
| 2225 | if (atomic_read(&fcport->port_down_timer) == 0) |
| 2226 | continue; |
| 2227 | |
| 2228 | if (atomic_dec_and_test(&fcport->port_down_timer) != 0) |
| 2229 | atomic_set(&fcport->state, FCS_DEVICE_DEAD); |
| 2230 | |
| 2231 | DEBUG(printk("scsi(%ld): fcport-%d - port retry count: " |
| 2232 | "%d remainning\n", |
| 2233 | ha->host_no, |
| 2234 | t, atomic_read(&fcport->port_down_timer))); |
| 2235 | } |
| 2236 | t++; |
| 2237 | } /* End of for fcport */ |
| 2238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2239 | |
| 2240 | /* Loop down handler. */ |
| 2241 | if (atomic_read(&ha->loop_down_timer) > 0 && |
| 2242 | !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) { |
| 2243 | |
| 2244 | if (atomic_read(&ha->loop_down_timer) == |
| 2245 | ha->loop_down_abort_time) { |
| 2246 | |
| 2247 | DEBUG(printk("scsi(%ld): Loop Down - aborting the " |
| 2248 | "queues before time expire\n", |
| 2249 | ha->host_no)); |
| 2250 | |
| 2251 | if (!IS_QLA2100(ha) && ha->link_down_timeout) |
| 2252 | atomic_set(&ha->loop_state, LOOP_DEAD); |
| 2253 | |
| 2254 | /* Schedule an ISP abort to return any tape commands. */ |
| 2255 | spin_lock_irqsave(&ha->hardware_lock, cpu_flags); |
| 2256 | for (index = 1; index < MAX_OUTSTANDING_COMMANDS; |
| 2257 | index++) { |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 2258 | fc_port_t *sfcp; |
| 2259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2260 | sp = ha->outstanding_cmds[index]; |
| 2261 | if (!sp) |
| 2262 | continue; |
| bdf7962 | 2005-04-17 15:06:53 -0500 | [diff] [blame] | 2263 | sfcp = sp->fcport; |
| 2264 | if (!(sfcp->flags & FCF_TAPE_PRESENT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2265 | continue; |
| 2266 | |
| 2267 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| 2268 | break; |
| 2269 | } |
| 2270 | spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags); |
| 2271 | |
| 2272 | set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags); |
| 2273 | start_dpc++; |
| 2274 | } |
| 2275 | |
| 2276 | /* if the loop has been down for 4 minutes, reinit adapter */ |
| 2277 | if (atomic_dec_and_test(&ha->loop_down_timer) != 0) { |
| 2278 | DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - " |
| 2279 | "restarting queues.\n", |
| 2280 | ha->host_no)); |
| 2281 | |
| 2282 | set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags); |
| 2283 | start_dpc++; |
| 2284 | |
| 2285 | if (!(ha->device_flags & DFLG_NO_CABLE)) { |
| 2286 | DEBUG(printk("scsi(%ld): Loop down - " |
| 2287 | "aborting ISP.\n", |
| 2288 | ha->host_no)); |
| 2289 | qla_printk(KERN_WARNING, ha, |
| 2290 | "Loop down - aborting ISP.\n"); |
| 2291 | |
| 2292 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); |
| 2293 | } |
| 2294 | } |
| 2295 | DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n", |
| 2296 | ha->host_no, |
| 2297 | atomic_read(&ha->loop_down_timer))); |
| 2298 | } |
| 2299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2300 | /* Schedule the DPC routine if needed */ |
| 2301 | if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) || |
| 2302 | test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) || |
| 2303 | start_dpc || |
| 2304 | test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) || |
| f4f051e | 2005-04-17 15:02:26 -0500 | [diff] [blame] | 2305 | test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2306 | test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) && |
| 2307 | ha->dpc_wait && !ha->dpc_active) { |
| 2308 | |
| 2309 | up(ha->dpc_wait); |
| 2310 | } |
| 2311 | |
| 2312 | qla2x00_restart_timer(ha, WATCH_INTERVAL); |
| 2313 | } |
| 2314 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2315 | /* XXX(hch): crude hack to emulate a down_timeout() */ |
| 2316 | int |
| 2317 | qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout) |
| 2318 | { |
| 2319 | const unsigned int step = HZ/10; |
| 2320 | |
| 2321 | do { |
| 2322 | if (!down_trylock(sema)) |
| 2323 | return 0; |
| 2324 | set_current_state(TASK_INTERRUPTIBLE); |
| 2325 | if (schedule_timeout(step)) |
| 2326 | break; |
| 2327 | } while ((timeout -= step) > 0); |
| 2328 | |
| 2329 | return -ETIMEDOUT; |
| 2330 | } |
| 2331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2332 | /** |
| 2333 | * qla2x00_module_init - Module initialization. |
| 2334 | **/ |
| 2335 | static int __init |
| 2336 | qla2x00_module_init(void) |
| 2337 | { |
| 2338 | /* Allocate cache for SRBs. */ |
| 2339 | sprintf(srb_cachep_name, "qla2xxx_srbs"); |
| 2340 | srb_cachep = kmem_cache_create(srb_cachep_name, sizeof(srb_t), 0, |
| 2341 | SLAB_HWCACHE_ALIGN, NULL, NULL); |
| 2342 | if (srb_cachep == NULL) { |
| 2343 | printk(KERN_ERR |
| 2344 | "qla2xxx: Unable to allocate SRB cache...Failing load!\n"); |
| 2345 | return -ENOMEM; |
| 2346 | } |
| 2347 | |
| 2348 | /* Derive version string. */ |
| 2349 | strcpy(qla2x00_version_str, QLA2XXX_VERSION); |
| 2350 | #if DEBUG_QLA2100 |
| 2351 | strcat(qla2x00_version_str, "-debug"); |
| 2352 | #endif |
Andrew Vasquez | 1c97a12 | 2005-04-21 16:13:36 -0400 | [diff] [blame^] | 2353 | qla2xxx_transport_template = |
| 2354 | fc_attach_transport(&qla2xxx_transport_functions); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2355 | if (!qla2xxx_transport_template) |
| 2356 | return -ENODEV; |
| 2357 | |
| 2358 | printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n"); |
| 2359 | return 0; |
| 2360 | } |
| 2361 | |
| 2362 | /** |
| 2363 | * qla2x00_module_exit - Module cleanup. |
| 2364 | **/ |
| 2365 | static void __exit |
| 2366 | qla2x00_module_exit(void) |
| 2367 | { |
| 2368 | /* Free SRBs cache. */ |
| 2369 | if (srb_cachep != NULL) { |
| 2370 | if (kmem_cache_destroy(srb_cachep) != 0) { |
| 2371 | printk(KERN_ERR |
| 2372 | "qla2xxx: Unable to free SRB cache...Memory pools " |
| 2373 | "still active?\n"); |
| 2374 | } |
| 2375 | srb_cachep = NULL; |
| 2376 | } |
| 2377 | |
| 2378 | fc_release_transport(qla2xxx_transport_template); |
| 2379 | } |
| 2380 | |
| 2381 | module_init(qla2x00_module_init); |
| 2382 | module_exit(qla2x00_module_exit); |
| 2383 | |
| 2384 | MODULE_AUTHOR("QLogic Corporation"); |
| 2385 | MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver"); |
| 2386 | MODULE_LICENSE("GPL"); |
| 2387 | MODULE_VERSION(QLA2XXX_VERSION); |