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1da177e4 LT |
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 | ||
8482e118 | 66 | int qlport_down_retry = 30; |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
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); | |
f4f051eb | 130 | static int qla2xxx_slave_alloc(struct scsi_device *); |
131 | static void qla2xxx_slave_destroy(struct scsi_device *); | |
1da177e4 LT |
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 | ||
1da177e4 LT |
141 | static struct scsi_host_template qla2x00_driver_template = { |
142 | .module = THIS_MODULE, | |
143 | .name = "qla2xxx", | |
1da177e4 LT |
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 | ||
f4f051eb | 153 | .slave_alloc = qla2xxx_slave_alloc, |
154 | .slave_destroy = qla2xxx_slave_destroy, | |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
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); | |
f4f051eb | 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 *); | |
1da177e4 | 217 | |
1da177e4 LT |
218 | /* -------------------------------------------------------------------------- */ |
219 | ||
1da177e4 LT |
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 | |
f4f051eb | 301 | qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) |
1da177e4 | 302 | { |
f4f051eb | 303 | scsi_qla_host_t *ha = to_qla_host(cmd->device->host); |
bdf79621 | 304 | fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; |
f4f051eb | 305 | srb_t *sp; |
306 | int rval; | |
1da177e4 | 307 | |
bdf79621 | 308 | if (!fcport) { |
f4f051eb | 309 | cmd->result = DID_NO_CONNECT << 16; |
310 | goto qc_fail_command; | |
311 | } | |
1da177e4 | 312 | |
f4f051eb | 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 | } | |
1da177e4 LT |
321 | |
322 | spin_unlock_irq(ha->host->host_lock); | |
323 | ||
f4f051eb | 324 | /* Allocate a command packet from the "sp" pool. */ |
1da177e4 | 325 | if ((sp = qla2x00_get_new_sp(ha)) == NULL) { |
f4f051eb | 326 | goto qc_host_busy_lock; |
1da177e4 LT |
327 | } |
328 | ||
f4f051eb | 329 | sp->ha = ha; |
bdf79621 | 330 | sp->fcport = fcport; |
1da177e4 | 331 | sp->cmd = cmd; |
f4f051eb | 332 | sp->flags = 0; |
333 | sp->err_id = 0; | |
1da177e4 | 334 | |
f4f051eb | 335 | CMD_SP(cmd) = (void *)sp; |
336 | cmd->scsi_done = done; | |
1da177e4 | 337 | |
f4f051eb | 338 | rval = qla2x00_start_scsi(sp); |
339 | if (rval != QLA_SUCCESS) | |
340 | goto qc_host_busy_free_sp; | |
1da177e4 | 341 | |
f4f051eb | 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; | |
1da177e4 | 346 | |
f4f051eb | 347 | spin_lock_irqsave(&ha->hardware_lock, flags); |
348 | qla2x00_process_response_queue(ha); | |
349 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1da177e4 LT |
350 | } |
351 | ||
f4f051eb | 352 | spin_lock_irq(ha->host->host_lock); |
1da177e4 | 353 | |
f4f051eb | 354 | return 0; |
1da177e4 | 355 | |
f4f051eb | 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); | |
1da177e4 | 360 | |
f4f051eb | 361 | qc_host_busy_lock: |
362 | spin_lock_irq(ha->host->host_lock); | |
1da177e4 | 363 | |
f4f051eb | 364 | qc_host_busy: |
365 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 | 366 | |
f4f051eb | 367 | qc_fail_command: |
368 | done(cmd); | |
1da177e4 | 369 | |
f4f051eb | 370 | return 0; |
1da177e4 LT |
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 | |
f4f051eb | 392 | #define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD)) |
393 | unsigned long wait_iter = ABORT_WAIT_ITER; | |
394 | int ret = QLA_SUCCESS; | |
1da177e4 | 395 | |
f4f051eb | 396 | while (CMD_SP(cmd)) { |
1da177e4 LT |
397 | set_current_state(TASK_UNINTERRUPTIBLE); |
398 | schedule_timeout(ABORT_POLLING_PERIOD); | |
399 | ||
f4f051eb | 400 | if (--wait_iter) |
401 | break; | |
402 | } | |
403 | if (CMD_SP(cmd)) | |
404 | ret = QLA_FUNCTION_FAILED; | |
1da177e4 | 405 | |
f4f051eb | 406 | return ret; |
1da177e4 LT |
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 | { | |
f4f051eb | 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; | |
1da177e4 | 510 | |
f4f051eb | 511 | if (!CMD_SP(cmd)) |
512 | return FAILED; | |
1da177e4 | 513 | |
f4f051eb | 514 | ret = FAILED; |
1da177e4 | 515 | |
f4f051eb | 516 | id = cmd->device->id; |
517 | lun = cmd->device->lun; | |
518 | serial = cmd->serial_number; | |
1da177e4 | 519 | |
f4f051eb | 520 | /* Check active list for command command. */ |
521 | spin_unlock_irq(ha->host->host_lock); | |
522 | spin_lock(&ha->hardware_lock); | |
523 | for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) { | |
524 | sp = ha->outstanding_cmds[i]; | |
1da177e4 | 525 | |
f4f051eb | 526 | if (sp == NULL) |
527 | continue; | |
1da177e4 | 528 | |
f4f051eb | 529 | if (sp->cmd != cmd) |
530 | continue; | |
1da177e4 | 531 | |
f4f051eb | 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);) | |
1da177e4 | 536 | |
f4f051eb | 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); | |
1da177e4 | 547 | |
f4f051eb | 548 | break; |
549 | } | |
1da177e4 | 550 | |
f4f051eb | 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); | |
1da177e4 LT |
560 | } |
561 | spin_lock_irq(ha->host->host_lock); | |
562 | ||
f4f051eb | 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); | |
1da177e4 | 566 | |
f4f051eb | 567 | return ret; |
568 | } | |
1da177e4 | 569 | |
f4f051eb | 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; | |
1da177e4 | 591 | |
f4f051eb | 592 | status = 0; |
1da177e4 LT |
593 | |
594 | /* | |
f4f051eb | 595 | * Waiting for all commands for the designated target in the active |
596 | * array | |
1da177e4 LT |
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 | } | |
f4f051eb | 610 | } else { |
1da177e4 LT |
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 | { | |
f4f051eb | 640 | scsi_qla_host_t *ha = to_qla_host(cmd->device->host); |
bdf79621 | 641 | fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; |
f4f051eb | 642 | srb_t *sp; |
643 | int ret; | |
644 | unsigned int id, lun; | |
645 | unsigned long serial; | |
1da177e4 | 646 | |
f4f051eb | 647 | ret = FAILED; |
1da177e4 | 648 | |
f4f051eb | 649 | id = cmd->device->id; |
650 | lun = cmd->device->lun; | |
651 | serial = cmd->serial_number; | |
1da177e4 | 652 | |
f4f051eb | 653 | sp = (srb_t *) CMD_SP(cmd); |
bdf79621 | 654 | if (!sp || !fcport) |
f4f051eb | 655 | return ret; |
1da177e4 LT |
656 | |
657 | qla_printk(KERN_INFO, ha, | |
f4f051eb | 658 | "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun); |
1da177e4 LT |
659 | |
660 | spin_unlock_irq(ha->host->host_lock); | |
661 | ||
662 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) { | |
1da177e4 LT |
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) { | |
f4f051eb | 668 | if (qla2x00_device_reset(ha, fcport) == 0) |
669 | ret = SUCCESS; | |
1da177e4 LT |
670 | |
671 | #if defined(LOGOUT_AFTER_DEVICE_RESET) | |
f4f051eb | 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); | |
1da177e4 LT |
676 | } |
677 | } | |
678 | #endif | |
679 | } else { | |
680 | DEBUG2(printk(KERN_INFO | |
681 | "%s failed: loop not ready\n",__func__);) | |
682 | } | |
683 | ||
f4f051eb | 684 | if (ret == FAILED) { |
1da177e4 LT |
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) { | |
f4f051eb | 698 | if (qla2x00_eh_wait_for_pending_target_commands(ha, id)) |
699 | ret = FAILED; | |
1da177e4 | 700 | |
f4f051eb | 701 | if (ret == FAILED) { |
1da177e4 LT |
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, | |
f4f051eb | 713 | "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun); |
1da177e4 LT |
714 | |
715 | eh_dev_reset_done: | |
f4f051eb | 716 | spin_lock_irq(ha->host->host_lock); |
1da177e4 | 717 | |
f4f051eb | 718 | return ret; |
1da177e4 LT |
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 | { | |
f4f051eb | 786 | scsi_qla_host_t *ha = to_qla_host(cmd->device->host); |
bdf79621 | 787 | fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; |
1da177e4 | 788 | srb_t *sp; |
f4f051eb | 789 | int ret; |
790 | unsigned int id, lun; | |
791 | unsigned long serial; | |
792 | ||
793 | ret = FAILED; | |
794 | ||
795 | id = cmd->device->id; | |
796 | lun = cmd->device->lun; | |
797 | serial = cmd->serial_number; | |
1da177e4 | 798 | |
1da177e4 | 799 | sp = (srb_t *) CMD_SP(cmd); |
bdf79621 | 800 | if (!sp || !fcport) |
f4f051eb | 801 | return ret; |
1da177e4 LT |
802 | |
803 | qla_printk(KERN_INFO, ha, | |
f4f051eb | 804 | "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun); |
1da177e4 LT |
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__)); | |
f4f051eb | 810 | goto eh_bus_reset_done; |
1da177e4 LT |
811 | } |
812 | ||
813 | if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) { | |
f4f051eb | 814 | if (qla2x00_loop_reset(ha) == QLA_SUCCESS) |
815 | ret = SUCCESS; | |
1da177e4 | 816 | } |
f4f051eb | 817 | if (ret == FAILED) |
818 | goto eh_bus_reset_done; | |
1da177e4 LT |
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)) | |
f4f051eb | 823 | ret = FAILED; |
1da177e4 | 824 | |
f4f051eb | 825 | eh_bus_reset_done: |
1da177e4 | 826 | qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, |
f4f051eb | 827 | (ret == FAILED) ? "failed" : "succeded"); |
1da177e4 | 828 | |
f4f051eb | 829 | spin_lock_irq(ha->host->host_lock); |
830 | ||
831 | return ret; | |
1da177e4 LT |
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 | { | |
f4f051eb | 852 | scsi_qla_host_t *ha = to_qla_host(cmd->device->host); |
bdf79621 | 853 | fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; |
f4f051eb | 854 | srb_t *sp; |
855 | int ret; | |
856 | unsigned int id, lun; | |
857 | unsigned long serial; | |
1da177e4 | 858 | |
f4f051eb | 859 | ret = FAILED; |
860 | ||
861 | id = cmd->device->id; | |
862 | lun = cmd->device->lun; | |
863 | serial = cmd->serial_number; | |
864 | ||
865 | sp = (srb_t *) CMD_SP(cmd); | |
bdf79621 | 866 | if (!sp || !fcport) |
f4f051eb | 867 | return ret; |
1da177e4 | 868 | |
1da177e4 | 869 | qla_printk(KERN_INFO, ha, |
f4f051eb | 870 | "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun); |
1da177e4 LT |
871 | |
872 | spin_unlock_irq(ha->host->host_lock); | |
873 | ||
874 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) | |
f4f051eb | 875 | goto eh_host_reset_lock; |
1da177e4 LT |
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 | */ | |
1da177e4 LT |
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) | |
f4f051eb | 893 | goto eh_host_reset_lock; |
1da177e4 | 894 | } |
1da177e4 LT |
895 | clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); |
896 | ||
1da177e4 | 897 | /* Waiting for our command in done_queue to be returned to OS.*/ |
f4f051eb | 898 | if (qla2x00_eh_wait_for_pending_commands(ha)) |
899 | ret = SUCCESS; | |
1da177e4 | 900 | |
f4f051eb | 901 | eh_host_reset_lock: |
1da177e4 LT |
902 | spin_lock_irq(ha->host->host_lock); |
903 | ||
f4f051eb | 904 | qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, |
905 | (ret == FAILED) ? "failed" : "succeded"); | |
1da177e4 | 906 | |
f4f051eb | 907 | return ret; |
908 | } | |
1da177e4 LT |
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; | |
bdf79621 | 924 | struct fc_port *fcport; |
1da177e4 LT |
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) { | |
bdf79621 | 931 | list_for_each_entry(fcport, &ha->fcports, list) { |
932 | if (fcport->port_type != FCT_TARGET) | |
1da177e4 LT |
933 | continue; |
934 | ||
bdf79621 | 935 | status = qla2x00_target_reset(ha, fcport); |
936 | if (status != QLA_SUCCESS) | |
1da177e4 | 937 | break; |
1da177e4 LT |
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 | ||
f4f051eb | 987 | static int |
988 | qla2xxx_slave_alloc(struct scsi_device *sdev) | |
1da177e4 LT |
989 | { |
990 | scsi_qla_host_t *ha = to_qla_host(sdev->host); | |
bdf79621 | 991 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
992 | fc_port_t *fcport; | |
993 | int found; | |
1da177e4 | 994 | |
bdf79621 | 995 | if (!rport) |
f4f051eb | 996 | return -ENXIO; |
bdf79621 | 997 | |
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 | } | |
bdf79621 | 1005 | } |
1006 | if (!found) | |
f4f051eb | 1007 | return -ENXIO; |
1da177e4 | 1008 | |
bdf79621 | 1009 | sdev->hostdata = fcport; |
1da177e4 | 1010 | |
f4f051eb | 1011 | return 0; |
1012 | } | |
1da177e4 | 1013 | |
f4f051eb | 1014 | static int |
1015 | qla2xxx_slave_configure(struct scsi_device *sdev) | |
1016 | { | |
8482e118 | 1017 | scsi_qla_host_t *ha = to_qla_host(sdev->host); |
1018 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
1019 | ||
f4f051eb | 1020 | if (sdev->tagged_supported) |
1021 | scsi_activate_tcq(sdev, 32); | |
1022 | else | |
1023 | scsi_deactivate_tcq(sdev, 32); | |
1da177e4 | 1024 | |
8482e118 | 1025 | rport->dev_loss_tmo = ha->port_down_retry_count + 5; |
1026 | ||
f4f051eb | 1027 | return 0; |
1028 | } | |
1da177e4 | 1029 | |
f4f051eb | 1030 | static void |
1031 | qla2xxx_slave_destroy(struct scsi_device *sdev) | |
1032 | { | |
1033 | sdev->hostdata = NULL; | |
1da177e4 LT |
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]; | |
8482e118 | 1159 | fc_port_t *fcport; |
1da177e4 LT |
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) { | |
8482e118 | 1185 | goto probe_alloc_failed; |
1da177e4 LT |
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); | |
1da177e4 LT |
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); | |
1da177e4 LT |
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 | ||
8482e118 | 1259 | goto probe_alloc_failed; |
1da177e4 LT |
1260 | } |
1261 | ||
8482e118 | 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 | ||
1da177e4 LT |
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 | ||
8482e118 | 1289 | qla2x00_init_host_attr(ha); |
bdf79621 | 1290 | |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
1364 | ha->flags.init_done = 1; |
1365 | num_hosts++; | |
1366 | ||
1da177e4 LT |
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 | ||
8482e118 | 1376 | /* Go with fc_rport registration. */ |
1377 | list_for_each_entry(fcport, &ha->fcports, list) | |
1378 | qla2x00_reg_remote_port(ha, fcport); | |
1da177e4 LT |
1379 | |
1380 | return 0; | |
1381 | ||
1382 | probe_failed: | |
bdf79621 | 1383 | fc_remove_host(ha->host); |
1384 | ||
8482e118 | 1385 | scsi_remove_host(host); |
1386 | ||
1387 | probe_alloc_failed: | |
1da177e4 LT |
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 | ||
8482e118 | 1405 | qla2x00_free_sysfs_attr(ha); |
1da177e4 | 1406 | |
bdf79621 | 1407 | fc_remove_host(ha->host); |
1408 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
1468 | /* |
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 | { | |
8482e118 | 1480 | if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport) |
1481 | fc_remote_port_block(fcport->rport); | |
1da177e4 LT |
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; | |
8482e118 | 1541 | if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport) |
1542 | fc_remote_port_block(fcport->rport); | |
1da177e4 LT |
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 | { | |
1da177e4 LT |
1759 | struct list_head *fcpl, *fcptemp; |
1760 | fc_port_t *fcport; | |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
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; | |
1da177e4 | 1924 | uint8_t status; |
1da177e4 | 1925 | uint16_t next_loopid; |
1da177e4 LT |
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 | ||
1da177e4 | 1961 | if (ha->flags.mbox_busy) { |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
2101 | if (!ha->interrupts_on) |
2102 | qla2x00_enable_intrs(ha); | |
2103 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
2118 | /* |
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 | ||
f4f051eb | 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 | } | |
bdf79621 | 2192 | |
1da177e4 LT |
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 | { | |
1da177e4 LT |
2204 | unsigned long cpu_flags = 0; |
2205 | fc_port_t *fcport; | |
1da177e4 LT |
2206 | int start_dpc = 0; |
2207 | int index; | |
2208 | srb_t *sp; | |
f4f051eb | 2209 | int t; |
1da177e4 LT |
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 | ||
1da177e4 LT |
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++) { | |
bdf79621 | 2258 | fc_port_t *sfcp; |
2259 | ||
1da177e4 LT |
2260 | sp = ha->outstanding_cmds[index]; |
2261 | if (!sp) | |
2262 | continue; | |
bdf79621 | 2263 | sfcp = sp->fcport; |
2264 | if (!(sfcp->flags & FCF_TAPE_PRESENT)) | |
1da177e4 LT |
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 | ||
1da177e4 LT |
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) || | |
f4f051eb | 2305 | test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) || |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | |
1c97a12a AV |
2353 | qla2xxx_transport_template = |
2354 | fc_attach_transport(&qla2xxx_transport_functions); | |
1da177e4 LT |
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); |