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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 | ||
66 | int qlport_down_retry; | |
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 | ||
78 | int displayConfig; | |
79 | module_param(displayConfig, int, S_IRUGO|S_IWUSR); | |
80 | MODULE_PARM_DESC(displayConfig, | |
81 | "If 1 then display the configuration used in /etc/modprobe.conf."); | |
82 | ||
83 | int ql2xplogiabsentdevice; | |
84 | module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR); | |
85 | MODULE_PARM_DESC(ql2xplogiabsentdevice, | |
86 | "Option to enable PLOGI to devices that are not present after " | |
87 | "a Fabric scan. This is needed for several broken switches." | |
88 | "Default is 0 - no PLOGI. 1 - perfom PLOGI."); | |
89 | ||
90 | int ql2xenablezio = 0; | |
91 | module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR); | |
92 | MODULE_PARM_DESC(ql2xenablezio, | |
93 | "Option to enable ZIO:If 1 then enable it otherwise" | |
94 | " use the default set in the NVRAM." | |
95 | " Default is 0 : disabled"); | |
96 | ||
97 | int ql2xintrdelaytimer = 10; | |
98 | module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR); | |
99 | MODULE_PARM_DESC(ql2xintrdelaytimer, | |
100 | "ZIO: Waiting time for Firmware before it generates an " | |
101 | "interrupt to the host to notify completion of request."); | |
102 | ||
103 | int ConfigRequired; | |
104 | module_param(ConfigRequired, int, S_IRUGO|S_IRUSR); | |
105 | MODULE_PARM_DESC(ConfigRequired, | |
106 | "If 1, then only configured devices passed in through the" | |
107 | "ql2xopts parameter will be presented to the OS"); | |
108 | ||
109 | int Bind = BIND_BY_PORT_NAME; | |
110 | module_param(Bind, int, S_IRUGO|S_IRUSR); | |
111 | MODULE_PARM_DESC(Bind, | |
112 | "Target persistent binding method: " | |
113 | "0 by Portname (default); 1 by PortID; 2 by Nodename. "); | |
114 | ||
115 | int ql2xsuspendcount = SUSPEND_COUNT; | |
116 | module_param(ql2xsuspendcount, int, S_IRUGO|S_IWUSR); | |
117 | MODULE_PARM_DESC(ql2xsuspendcount, | |
118 | "Number of 6-second suspend iterations to perform while a " | |
119 | "target returns a <NOT READY> status. Default is 10 " | |
120 | "iterations."); | |
121 | ||
122 | int ql2xdoinitscan = 1; | |
123 | module_param(ql2xdoinitscan, int, S_IRUGO|S_IWUSR); | |
124 | MODULE_PARM_DESC(ql2xdoinitscan, | |
125 | "Signal mid-layer to perform scan after driver load: 0 -- no " | |
126 | "signal sent to mid-layer."); | |
127 | ||
128 | int ql2xloginretrycount = 0; | |
129 | module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR); | |
130 | MODULE_PARM_DESC(ql2xloginretrycount, | |
131 | "Specify an alternate value for the NVRAM login retry count."); | |
132 | ||
133 | /* | |
134 | * Proc structures and functions | |
135 | */ | |
136 | struct info_str { | |
137 | char *buffer; | |
138 | int length; | |
139 | off_t offset; | |
140 | int pos; | |
141 | }; | |
142 | ||
143 | static void copy_mem_info(struct info_str *, char *, int); | |
144 | static int copy_info(struct info_str *, char *, ...); | |
145 | ||
146 | static void qla2x00_free_device(scsi_qla_host_t *); | |
147 | ||
148 | static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha); | |
149 | ||
150 | /* | |
151 | * SCSI host template entry points | |
152 | */ | |
153 | static int qla2xxx_slave_configure(struct scsi_device * device); | |
154 | static int qla2x00_queuecommand(struct scsi_cmnd *cmd, | |
155 | void (*fn)(struct scsi_cmnd *)); | |
156 | static int qla2xxx_eh_abort(struct scsi_cmnd *); | |
157 | static int qla2xxx_eh_device_reset(struct scsi_cmnd *); | |
158 | static int qla2xxx_eh_bus_reset(struct scsi_cmnd *); | |
159 | static int qla2xxx_eh_host_reset(struct scsi_cmnd *); | |
160 | static int qla2x00_loop_reset(scsi_qla_host_t *ha); | |
161 | static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *); | |
162 | ||
163 | static int qla2x00_proc_info(struct Scsi_Host *, char *, char **, | |
164 | off_t, int, int); | |
165 | ||
166 | static struct scsi_host_template qla2x00_driver_template = { | |
167 | .module = THIS_MODULE, | |
168 | .name = "qla2xxx", | |
169 | .proc_name = "qla2xxx", | |
170 | .proc_info = qla2x00_proc_info, | |
171 | .queuecommand = qla2x00_queuecommand, | |
172 | ||
173 | .eh_abort_handler = qla2xxx_eh_abort, | |
174 | .eh_device_reset_handler = qla2xxx_eh_device_reset, | |
175 | .eh_bus_reset_handler = qla2xxx_eh_bus_reset, | |
176 | .eh_host_reset_handler = qla2xxx_eh_host_reset, | |
177 | ||
178 | .slave_configure = qla2xxx_slave_configure, | |
179 | ||
180 | .this_id = -1, | |
181 | .cmd_per_lun = 3, | |
182 | .use_clustering = ENABLE_CLUSTERING, | |
183 | .sg_tablesize = SG_ALL, | |
184 | ||
185 | /* | |
186 | * The RISC allows for each command to transfer (2^32-1) bytes of data, | |
187 | * which equates to 0x800000 sectors. | |
188 | */ | |
189 | .max_sectors = 0xFFFF, | |
190 | }; | |
191 | ||
192 | static struct scsi_transport_template *qla2xxx_transport_template = NULL; | |
193 | ||
194 | static void qla2x00_display_fc_names(scsi_qla_host_t *); | |
195 | ||
196 | /* TODO Convert to inlines | |
197 | * | |
198 | * Timer routines | |
199 | */ | |
200 | #define WATCH_INTERVAL 1 /* number of seconds */ | |
201 | ||
202 | static void qla2x00_timer(scsi_qla_host_t *); | |
203 | ||
204 | static __inline__ void qla2x00_start_timer(scsi_qla_host_t *, | |
205 | void *, unsigned long); | |
206 | static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long); | |
207 | static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *); | |
208 | ||
209 | static inline void | |
210 | qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval) | |
211 | { | |
212 | init_timer(&ha->timer); | |
213 | ha->timer.expires = jiffies + interval * HZ; | |
214 | ha->timer.data = (unsigned long)ha; | |
215 | ha->timer.function = (void (*)(unsigned long))func; | |
216 | add_timer(&ha->timer); | |
217 | ha->timer_active = 1; | |
218 | } | |
219 | ||
220 | static inline void | |
221 | qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval) | |
222 | { | |
223 | mod_timer(&ha->timer, jiffies + interval * HZ); | |
224 | } | |
225 | ||
226 | static __inline__ void | |
227 | qla2x00_stop_timer(scsi_qla_host_t *ha) | |
228 | { | |
229 | del_timer_sync(&ha->timer); | |
230 | ha->timer_active = 0; | |
231 | } | |
232 | ||
233 | void qla2x00_cmd_timeout(srb_t *); | |
234 | ||
235 | static __inline__ void qla2x00_callback(scsi_qla_host_t *, struct scsi_cmnd *); | |
236 | static __inline__ void sp_put(struct scsi_qla_host * ha, srb_t *sp); | |
237 | static __inline__ void sp_get(struct scsi_qla_host * ha, srb_t *sp); | |
238 | static __inline__ void | |
239 | qla2x00_delete_from_done_queue(scsi_qla_host_t *, srb_t *); | |
240 | ||
241 | /* | |
242 | * qla2x00_callback | |
243 | * Returns the completed SCSI command to LINUX. | |
244 | * | |
245 | * Input: | |
246 | * ha -- Host adapter structure | |
247 | * cmd -- SCSI mid-level command structure. | |
248 | * Returns: | |
249 | * None | |
250 | * Note:From failover point of view we always get the sp | |
251 | * from vis_ha pool in queuecommand.So when we put it | |
252 | * back to the pool it has to be the vis_ha. | |
253 | * So rely on struct scsi_cmnd to get the vis_ha and not on sp. | |
254 | */ | |
255 | static inline void | |
256 | qla2x00_callback(scsi_qla_host_t *ha, struct scsi_cmnd *cmd) | |
257 | { | |
258 | srb_t *sp = (srb_t *) CMD_SP(cmd); | |
259 | scsi_qla_host_t *vis_ha; | |
260 | os_lun_t *lq; | |
261 | int got_sense; | |
262 | unsigned long cpu_flags = 0; | |
263 | ||
264 | cmd->host_scribble = (unsigned char *) NULL; | |
265 | vis_ha = (scsi_qla_host_t *) cmd->device->host->hostdata; | |
266 | ||
267 | if (sp == NULL) { | |
268 | qla_printk(KERN_INFO, ha, | |
269 | "%s(): **** CMD derives a NULL SP\n", | |
270 | __func__); | |
271 | DEBUG2(BUG();) | |
272 | return; | |
273 | } | |
274 | ||
275 | /* | |
276 | * If command status is not DID_BUS_BUSY then go ahead and freed sp. | |
277 | */ | |
278 | /* | |
279 | * Cancel command timeout | |
280 | */ | |
281 | qla2x00_delete_timer_from_cmd(sp); | |
282 | ||
283 | /* | |
284 | * Put SP back in the free queue | |
285 | */ | |
286 | sp->cmd = NULL; | |
287 | CMD_SP(cmd) = NULL; | |
288 | lq = sp->lun_queue; | |
289 | got_sense = (sp->flags & SRB_GOT_SENSE)? 1: 0; | |
290 | add_to_free_queue(vis_ha, sp); | |
291 | ||
292 | if (host_byte(cmd->result) == DID_OK) { | |
293 | /* device ok */ | |
294 | ha->total_bytes += cmd->bufflen; | |
295 | if (!got_sense) { | |
296 | /* If lun was suspended then clear retry count */ | |
297 | spin_lock_irqsave(&lq->q_lock, cpu_flags); | |
298 | if (!test_bit(LUN_EXEC_DELAYED, &lq->q_flag)) | |
299 | lq->q_state = LUN_STATE_READY; | |
300 | spin_unlock_irqrestore(&lq->q_lock, cpu_flags); | |
301 | } | |
302 | } else if (host_byte(cmd->result) == DID_ERROR) { | |
303 | /* device error */ | |
304 | ha->total_dev_errs++; | |
305 | } | |
306 | ||
307 | /* Call the mid-level driver interrupt handler */ | |
308 | (*(cmd)->scsi_done)(cmd); | |
309 | } | |
310 | ||
311 | /************************************************************************** | |
312 | * sp_put | |
313 | * | |
314 | * Description: | |
315 | * Decrement reference count and call the callback if we're the last | |
316 | * owner of the specified sp. Will get the host_lock before calling | |
317 | * the callback. | |
318 | * | |
319 | * Input: | |
320 | * ha - pointer to the scsi_qla_host_t where the callback is to occur. | |
321 | * sp - pointer to srb_t structure to use. | |
322 | * | |
323 | * Returns: | |
324 | * | |
325 | **************************************************************************/ | |
326 | static inline void | |
327 | sp_put(struct scsi_qla_host * ha, srb_t *sp) | |
328 | { | |
329 | if (atomic_read(&sp->ref_count) == 0) { | |
330 | qla_printk(KERN_INFO, ha, | |
331 | "%s(): **** SP->ref_count not zero\n", | |
332 | __func__); | |
333 | DEBUG2(BUG();) | |
334 | ||
335 | return; | |
336 | } | |
337 | ||
338 | if (!atomic_dec_and_test(&sp->ref_count)) { | |
339 | return; | |
340 | } | |
341 | ||
342 | qla2x00_callback(ha, sp->cmd); | |
343 | } | |
344 | ||
345 | /************************************************************************** | |
346 | * sp_get | |
347 | * | |
348 | * Description: | |
349 | * Increment reference count of the specified sp. | |
350 | * | |
351 | * Input: | |
352 | * sp - pointer to srb_t structure to use. | |
353 | * | |
354 | * Returns: | |
355 | * | |
356 | **************************************************************************/ | |
357 | static inline void | |
358 | sp_get(struct scsi_qla_host * ha, srb_t *sp) | |
359 | { | |
360 | atomic_inc(&sp->ref_count); | |
361 | ||
362 | if (atomic_read(&sp->ref_count) > 2) { | |
363 | qla_printk(KERN_INFO, ha, | |
364 | "%s(): **** SP->ref_count greater than two\n", | |
365 | __func__); | |
366 | DEBUG2(BUG();) | |
367 | ||
368 | return; | |
369 | } | |
370 | } | |
371 | ||
372 | static inline void | |
373 | qla2x00_delete_from_done_queue(scsi_qla_host_t *dest_ha, srb_t *sp) | |
374 | { | |
375 | /* remove command from done list */ | |
376 | list_del_init(&sp->list); | |
377 | dest_ha->done_q_cnt--; | |
378 | sp->state = SRB_NO_QUEUE_STATE; | |
379 | ||
380 | if (sp->flags & SRB_DMA_VALID) { | |
381 | sp->flags &= ~SRB_DMA_VALID; | |
382 | ||
383 | /* Release memory used for this I/O */ | |
384 | if (sp->cmd->use_sg) { | |
385 | pci_unmap_sg(dest_ha->pdev, sp->cmd->request_buffer, | |
386 | sp->cmd->use_sg, sp->cmd->sc_data_direction); | |
387 | } else if (sp->cmd->request_bufflen) { | |
388 | pci_unmap_page(dest_ha->pdev, sp->dma_handle, | |
389 | sp->cmd->request_bufflen, | |
390 | sp->cmd->sc_data_direction); | |
391 | } | |
392 | } | |
393 | } | |
394 | ||
395 | static int qla2x00_do_dpc(void *data); | |
396 | ||
397 | static void qla2x00_rst_aen(scsi_qla_host_t *); | |
398 | ||
399 | static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *); | |
400 | static void qla2x00_mem_free(scsi_qla_host_t *ha); | |
401 | static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha); | |
402 | static void qla2x00_free_sp_pool(scsi_qla_host_t *ha); | |
403 | static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *ha); | |
404 | ||
405 | static ssize_t qla2x00_sysfs_read_fw_dump(struct kobject *, char *, loff_t, | |
406 | size_t); | |
407 | static ssize_t qla2x00_sysfs_write_fw_dump(struct kobject *, char *, loff_t, | |
408 | size_t); | |
409 | static struct bin_attribute sysfs_fw_dump_attr = { | |
410 | .attr = { | |
411 | .name = "fw_dump", | |
412 | .mode = S_IRUSR | S_IWUSR, | |
413 | .owner = THIS_MODULE, | |
414 | }, | |
415 | .size = 0, | |
416 | .read = qla2x00_sysfs_read_fw_dump, | |
417 | .write = qla2x00_sysfs_write_fw_dump, | |
418 | }; | |
419 | static ssize_t qla2x00_sysfs_read_nvram(struct kobject *, char *, loff_t, | |
420 | size_t); | |
421 | static ssize_t qla2x00_sysfs_write_nvram(struct kobject *, char *, loff_t, | |
422 | size_t); | |
423 | static struct bin_attribute sysfs_nvram_attr = { | |
424 | .attr = { | |
425 | .name = "nvram", | |
426 | .mode = S_IRUSR | S_IWUSR, | |
427 | .owner = THIS_MODULE, | |
428 | }, | |
429 | .size = sizeof(nvram_t), | |
430 | .read = qla2x00_sysfs_read_nvram, | |
431 | .write = qla2x00_sysfs_write_nvram, | |
432 | }; | |
433 | ||
434 | /* -------------------------------------------------------------------------- */ | |
435 | ||
436 | ||
437 | /* SysFS attributes. */ | |
438 | static ssize_t qla2x00_sysfs_read_fw_dump(struct kobject *kobj, char *buf, | |
439 | loff_t off, size_t count) | |
440 | { | |
441 | struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, | |
442 | struct device, kobj))); | |
443 | ||
444 | if (ha->fw_dump_reading == 0) | |
445 | return 0; | |
446 | if (off > ha->fw_dump_buffer_len) | |
447 | return 0; | |
448 | if (off + count > ha->fw_dump_buffer_len) | |
449 | count = ha->fw_dump_buffer_len - off; | |
450 | ||
451 | memcpy(buf, &ha->fw_dump_buffer[off], count); | |
452 | ||
453 | return (count); | |
454 | } | |
455 | ||
456 | static ssize_t qla2x00_sysfs_write_fw_dump(struct kobject *kobj, char *buf, | |
457 | loff_t off, size_t count) | |
458 | { | |
459 | struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, | |
460 | struct device, kobj))); | |
461 | int reading; | |
462 | uint32_t dump_size; | |
463 | ||
464 | if (off != 0) | |
465 | return (0); | |
466 | ||
467 | reading = simple_strtol(buf, NULL, 10); | |
468 | switch (reading) { | |
469 | case 0: | |
470 | if (ha->fw_dump_reading == 1) { | |
471 | qla_printk(KERN_INFO, ha, | |
472 | "Firmware dump cleared on (%ld).\n", | |
473 | ha->host_no); | |
474 | ||
475 | vfree(ha->fw_dump_buffer); | |
476 | free_pages((unsigned long)ha->fw_dump, | |
477 | ha->fw_dump_order); | |
478 | ||
479 | ha->fw_dump_reading = 0; | |
480 | ha->fw_dump_buffer = NULL; | |
481 | ha->fw_dump = NULL; | |
482 | } | |
483 | break; | |
484 | case 1: | |
485 | if (ha->fw_dump != NULL && !ha->fw_dump_reading) { | |
486 | ha->fw_dump_reading = 1; | |
487 | ||
488 | dump_size = FW_DUMP_SIZE_1M; | |
489 | if (ha->fw_memory_size < 0x20000) | |
490 | dump_size = FW_DUMP_SIZE_128K; | |
491 | else if (ha->fw_memory_size < 0x80000) | |
492 | dump_size = FW_DUMP_SIZE_512K; | |
493 | ha->fw_dump_buffer = (char *)vmalloc(dump_size); | |
494 | if (ha->fw_dump_buffer == NULL) { | |
495 | qla_printk(KERN_WARNING, ha, | |
496 | "Unable to allocate memory for firmware " | |
497 | "dump buffer (%d).\n", dump_size); | |
498 | ||
499 | ha->fw_dump_reading = 0; | |
500 | return (count); | |
501 | } | |
502 | qla_printk(KERN_INFO, ha, | |
503 | "Firmware dump ready for read on (%ld).\n", | |
504 | ha->host_no); | |
505 | memset(ha->fw_dump_buffer, 0, dump_size); | |
506 | if (IS_QLA2100(ha) || IS_QLA2200(ha)) | |
507 | qla2100_ascii_fw_dump(ha); | |
508 | else | |
509 | qla2300_ascii_fw_dump(ha); | |
510 | ha->fw_dump_buffer_len = strlen(ha->fw_dump_buffer); | |
511 | } | |
512 | break; | |
513 | } | |
514 | return (count); | |
515 | } | |
516 | ||
517 | static ssize_t qla2x00_sysfs_read_nvram(struct kobject *kobj, char *buf, | |
518 | loff_t off, size_t count) | |
519 | { | |
520 | struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, | |
521 | struct device, kobj))); | |
522 | uint16_t *witer; | |
523 | unsigned long flags; | |
524 | uint16_t cnt; | |
525 | ||
526 | if (!capable(CAP_SYS_ADMIN) || off != 0 || count != sizeof(nvram_t)) | |
527 | return 0; | |
528 | ||
529 | /* Read NVRAM. */ | |
530 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
531 | qla2x00_lock_nvram_access(ha); | |
532 | witer = (uint16_t *)buf; | |
533 | for (cnt = 0; cnt < count / 2; cnt++) { | |
534 | *witer = cpu_to_le16(qla2x00_get_nvram_word(ha, | |
535 | cnt+ha->nvram_base)); | |
536 | witer++; | |
537 | } | |
538 | qla2x00_unlock_nvram_access(ha); | |
539 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
540 | ||
541 | return (count); | |
542 | } | |
543 | ||
544 | static ssize_t qla2x00_sysfs_write_nvram(struct kobject *kobj, char *buf, | |
545 | loff_t off, size_t count) | |
546 | { | |
547 | struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj, | |
548 | struct device, kobj))); | |
549 | uint8_t *iter; | |
550 | uint16_t *witer; | |
551 | unsigned long flags; | |
552 | uint16_t cnt; | |
553 | uint8_t chksum; | |
554 | ||
555 | if (!capable(CAP_SYS_ADMIN) || off != 0 || count != sizeof(nvram_t)) | |
556 | return 0; | |
557 | ||
558 | /* Checksum NVRAM. */ | |
559 | iter = (uint8_t *)buf; | |
560 | chksum = 0; | |
561 | for (cnt = 0; cnt < count - 1; cnt++) | |
562 | chksum += *iter++; | |
563 | chksum = ~chksum + 1; | |
564 | *iter = chksum; | |
565 | ||
566 | /* Write NVRAM. */ | |
567 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
568 | qla2x00_lock_nvram_access(ha); | |
569 | qla2x00_release_nvram_protection(ha); | |
570 | witer = (uint16_t *)buf; | |
571 | for (cnt = 0; cnt < count / 2; cnt++) { | |
572 | qla2x00_write_nvram_word(ha, cnt+ha->nvram_base, | |
573 | cpu_to_le16(*witer)); | |
574 | witer++; | |
575 | } | |
576 | qla2x00_unlock_nvram_access(ha); | |
577 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
578 | ||
579 | return (count); | |
580 | } | |
581 | ||
582 | /* -------------------------------------------------------------------------- */ | |
583 | static char * | |
584 | qla2x00_get_pci_info_str(struct scsi_qla_host *ha, char *str) | |
585 | { | |
586 | static char *pci_bus_modes[] = { | |
587 | "33", "66", "100", "133", | |
588 | }; | |
589 | uint16_t pci_bus; | |
590 | ||
591 | strcpy(str, "PCI"); | |
592 | pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9; | |
593 | if (pci_bus) { | |
594 | strcat(str, "-X ("); | |
595 | strcat(str, pci_bus_modes[pci_bus]); | |
596 | } else { | |
597 | pci_bus = (ha->pci_attr & BIT_8) >> 8; | |
598 | strcat(str, " ("); | |
599 | strcat(str, pci_bus_modes[pci_bus]); | |
600 | } | |
601 | strcat(str, " MHz)"); | |
602 | ||
603 | return (str); | |
604 | } | |
605 | ||
606 | char * | |
607 | qla2x00_get_fw_version_str(struct scsi_qla_host *ha, char *str) | |
608 | { | |
609 | char un_str[10]; | |
610 | ||
611 | sprintf(str, "%d.%02d.%02d ", ha->fw_major_version, | |
612 | ha->fw_minor_version, | |
613 | ha->fw_subminor_version); | |
614 | ||
615 | if (ha->fw_attributes & BIT_9) { | |
616 | strcat(str, "FLX"); | |
617 | return (str); | |
618 | } | |
619 | ||
620 | switch (ha->fw_attributes & 0xFF) { | |
621 | case 0x7: | |
622 | strcat(str, "EF"); | |
623 | break; | |
624 | case 0x17: | |
625 | strcat(str, "TP"); | |
626 | break; | |
627 | case 0x37: | |
628 | strcat(str, "IP"); | |
629 | break; | |
630 | case 0x77: | |
631 | strcat(str, "VI"); | |
632 | break; | |
633 | default: | |
634 | sprintf(un_str, "(%x)", ha->fw_attributes); | |
635 | strcat(str, un_str); | |
636 | break; | |
637 | } | |
638 | if (ha->fw_attributes & 0x100) | |
639 | strcat(str, "X"); | |
640 | ||
641 | return (str); | |
642 | } | |
643 | ||
644 | /************************************************************************** | |
645 | * qla2x00_queuecommand | |
646 | * | |
647 | * Description: | |
648 | * Queue a command to the controller. | |
649 | * | |
650 | * Input: | |
651 | * cmd - pointer to Scsi cmd structure | |
652 | * fn - pointer to Scsi done function | |
653 | * | |
654 | * Returns: | |
655 | * 0 - Always | |
656 | * | |
657 | * Note: | |
658 | * The mid-level driver tries to ensures that queuecommand never gets invoked | |
659 | * concurrently with itself or the interrupt handler (although the | |
660 | * interrupt handler may call this routine as part of request-completion | |
661 | * handling). | |
662 | **************************************************************************/ | |
663 | static int | |
664 | qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *)) | |
665 | { | |
666 | fc_port_t *fcport; | |
667 | os_lun_t *lq; | |
668 | os_tgt_t *tq; | |
669 | scsi_qla_host_t *ha, *ha2; | |
670 | srb_t *sp; | |
671 | struct Scsi_Host *host; | |
672 | unsigned int b, t, l; | |
673 | unsigned long handle; | |
674 | int was_empty; | |
675 | ||
676 | ||
677 | host = cmd->device->host; | |
678 | ha = (scsi_qla_host_t *) host->hostdata; | |
679 | was_empty = 1; | |
680 | ||
681 | cmd->scsi_done = fn; | |
682 | ||
683 | spin_unlock_irq(ha->host->host_lock); | |
684 | ||
685 | /* | |
686 | * Allocate a command packet from the "sp" pool. If we cant get back | |
687 | * one then let scsi layer come back later. | |
688 | */ | |
689 | if ((sp = qla2x00_get_new_sp(ha)) == NULL) { | |
690 | qla_printk(KERN_WARNING, ha, | |
691 | "Couldn't allocate memory for sp - retried.\n"); | |
692 | ||
693 | spin_lock_irq(ha->host->host_lock); | |
694 | ||
695 | return (1); | |
696 | } | |
697 | ||
698 | sp->cmd = cmd; | |
699 | CMD_SP(cmd) = (void *)sp; | |
700 | ||
701 | sp->flags = 0; | |
702 | if (CMD_RESID_LEN(cmd) & SRB_IOCTL) { | |
703 | /* Need to set sp->flags */ | |
704 | sp->flags |= SRB_IOCTL; | |
705 | CMD_RESID_LEN(cmd) = 0; /* Clear it since no more use. */ | |
706 | } | |
707 | ||
708 | sp->fo_retry_cnt = 0; | |
709 | sp->err_id = 0; | |
710 | ||
711 | /* Generate LU queue on bus, target, LUN */ | |
712 | b = cmd->device->channel; | |
713 | t = cmd->device->id; | |
714 | l = cmd->device->lun; | |
715 | ||
716 | /* | |
717 | * Start Command Timer. Typically it will be 2 seconds less than what | |
718 | * is requested by the Host such that we can return the IO before | |
719 | * aborts are called. | |
720 | */ | |
721 | if ((cmd->timeout_per_command / HZ) > QLA_CMD_TIMER_DELTA) | |
722 | qla2x00_add_timer_to_cmd(sp, | |
723 | (cmd->timeout_per_command / HZ) - QLA_CMD_TIMER_DELTA); | |
724 | else | |
725 | qla2x00_add_timer_to_cmd(sp, cmd->timeout_per_command / HZ); | |
726 | ||
727 | if (l >= ha->max_luns) { | |
728 | cmd->result = DID_NO_CONNECT << 16; | |
729 | sp->err_id = SRB_ERR_PORT; | |
730 | ||
731 | spin_lock_irq(ha->host->host_lock); | |
732 | ||
733 | sp_put(ha, sp); | |
734 | ||
735 | return (0); | |
736 | } | |
737 | ||
738 | if ((tq = (os_tgt_t *) TGT_Q(ha, t)) != NULL && | |
739 | (lq = (os_lun_t *) LUN_Q(ha, t, l)) != NULL) { | |
740 | fcport = lq->fclun->fcport; | |
741 | ha2 = fcport->ha; | |
742 | } else { | |
743 | lq = NULL; | |
744 | fcport = NULL; | |
745 | ha2 = ha; | |
746 | } | |
747 | ||
748 | /* Set an invalid handle until we issue the command to ISP */ | |
749 | /* then we will set the real handle value. */ | |
750 | handle = INVALID_HANDLE; | |
751 | cmd->host_scribble = (unsigned char *)handle; | |
752 | ||
753 | /* Bookkeeping information */ | |
754 | sp->r_start = jiffies; /* Time the request was recieved. */ | |
755 | sp->u_start = 0; | |
756 | ||
757 | /* Setup device queue pointers. */ | |
758 | sp->tgt_queue = tq; | |
759 | sp->lun_queue = lq; | |
760 | ||
761 | /* | |
762 | * NOTE : q is NULL | |
763 | * | |
764 | * 1. When device is added from persistent binding but has not been | |
765 | * discovered yet.The state of loopid == PORT_AVAIL. | |
766 | * 2. When device is never found on the bus.(loopid == UNUSED) | |
767 | * | |
768 | * IF Device Queue is not created, or device is not in a valid state | |
769 | * and link down error reporting is enabled, reject IO. | |
770 | */ | |
771 | if (fcport == NULL) { | |
772 | DEBUG3(printk("scsi(%ld:%2d:%2d): port unavailable\n", | |
773 | ha->host_no,t,l)); | |
774 | ||
775 | cmd->result = DID_NO_CONNECT << 16; | |
776 | sp->err_id = SRB_ERR_PORT; | |
777 | ||
778 | spin_lock_irq(ha->host->host_lock); | |
779 | ||
780 | sp_put(ha, sp); | |
781 | ||
782 | return (0); | |
783 | } | |
784 | ||
785 | /* Only modify the allowed count if the target is a *non* tape device */ | |
786 | if ((fcport->flags & FCF_TAPE_PRESENT) == 0) { | |
787 | sp->flags &= ~SRB_TAPE; | |
788 | if (cmd->allowed < ql2xretrycount) { | |
789 | cmd->allowed = ql2xretrycount; | |
790 | } | |
791 | } else | |
792 | sp->flags |= SRB_TAPE; | |
793 | ||
794 | DEBUG5(printk("scsi(%ld:%2d:%2d): (queuecmd) queue sp = %p, " | |
795 | "flags=0x%x fo retry=%d, pid=%ld\n", | |
796 | ha->host_no, t, l, sp, sp->flags, sp->fo_retry_cnt, | |
797 | cmd->serial_number)); | |
798 | DEBUG5(qla2x00_print_scsi_cmd(cmd)); | |
799 | ||
800 | sp->fclun = lq->fclun; | |
801 | sp->ha = ha2; | |
802 | ||
803 | if (cmd->sc_data_direction == DMA_BIDIRECTIONAL && | |
804 | cmd->request_bufflen != 0) { | |
805 | ||
806 | DEBUG2(printk(KERN_WARNING | |
807 | "scsi(%ld): Incorrect data direction - transfer " | |
808 | "length=%d, direction=%d, pid=%ld, opcode=%x\n", | |
809 | ha->host_no, cmd->request_bufflen, cmd->sc_data_direction, | |
810 | cmd->serial_number, cmd->cmnd[0])); | |
811 | } | |
812 | ||
813 | /* Final pre-check : | |
814 | * | |
815 | * Either PORT_DOWN_TIMER OR LINK_DOWN_TIMER Expired. | |
816 | */ | |
817 | if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD || | |
818 | atomic_read(&ha2->loop_state) == LOOP_DEAD) { | |
819 | /* | |
820 | * Add the command to the done-queue for later failover | |
821 | * processing. | |
822 | */ | |
823 | cmd->result = DID_NO_CONNECT << 16; | |
824 | if (atomic_read(&ha2->loop_state) == LOOP_DOWN) | |
825 | sp->err_id = SRB_ERR_LOOP; | |
826 | else | |
827 | sp->err_id = SRB_ERR_PORT; | |
828 | ||
829 | add_to_done_queue(ha, sp); | |
830 | qla2x00_done(ha); | |
831 | ||
832 | spin_lock_irq(ha->host->host_lock); | |
833 | return (0); | |
834 | } | |
835 | ||
836 | if (tq && test_bit(TQF_SUSPENDED, &tq->flags) && | |
837 | (sp->flags & SRB_TAPE) == 0) { | |
838 | /* If target suspended put incoming I/O in retry_q. */ | |
839 | qla2x00_extend_timeout(sp->cmd, 10); | |
840 | add_to_scsi_retry_queue(ha, sp); | |
841 | } else | |
842 | was_empty = add_to_pending_queue(ha, sp); | |
843 | ||
844 | if ((IS_QLA2100(ha) || IS_QLA2200(ha)) && ha->flags.online) { | |
845 | if (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) { | |
846 | unsigned long flags; | |
847 | ||
848 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
849 | qla2x00_process_response_queue(ha); | |
850 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
851 | } | |
852 | } | |
853 | ||
854 | /* We submit to the hardware if: | |
855 | * | |
856 | * 1) we're on the cpu the irq's arrive on or | |
857 | * 2) there are very few io's outstanding. | |
858 | * | |
859 | * In all other cases we'll let an irq pick up our IO and submit it | |
860 | * to the controller to improve affinity. | |
861 | */ | |
862 | if (_smp_processor_id() == ha->last_irq_cpu || was_empty) | |
863 | qla2x00_next(ha); | |
864 | ||
865 | spin_lock_irq(ha->host->host_lock); | |
866 | ||
867 | return (0); | |
868 | } | |
869 | ||
870 | /* | |
871 | * qla2x00_eh_wait_on_command | |
872 | * Waits for the command to be returned by the Firmware for some | |
873 | * max time. | |
874 | * | |
875 | * Input: | |
876 | * ha = actual ha whose done queue will contain the command | |
877 | * returned by firmware. | |
878 | * cmd = Scsi Command to wait on. | |
879 | * flag = Abort/Reset(Bus or Device Reset) | |
880 | * | |
881 | * Return: | |
882 | * Not Found : 0 | |
883 | * Found : 1 | |
884 | */ | |
885 | static int | |
886 | qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd) | |
887 | { | |
888 | #define ABORT_POLLING_PERIOD HZ | |
889 | #define ABORT_WAIT_TIME ((10 * HZ) / (ABORT_POLLING_PERIOD)) | |
890 | ||
891 | int found = 0; | |
892 | int done = 0; | |
893 | srb_t *rp = NULL; | |
894 | struct list_head *list, *temp; | |
895 | u_long max_wait_time = ABORT_WAIT_TIME; | |
896 | ||
897 | do { | |
898 | /* Check on done queue */ | |
899 | spin_lock(&ha->list_lock); | |
900 | list_for_each_safe(list, temp, &ha->done_queue) { | |
901 | rp = list_entry(list, srb_t, list); | |
902 | ||
903 | /* | |
904 | * Found command. Just exit and wait for the cmd sent | |
905 | * to OS. | |
906 | */ | |
907 | if (cmd == rp->cmd) { | |
908 | found++; | |
909 | DEBUG3(printk("%s: found in done queue.\n", | |
910 | __func__);) | |
911 | break; | |
912 | } | |
913 | } | |
914 | spin_unlock(&ha->list_lock); | |
915 | ||
916 | /* Complete the cmd right away. */ | |
917 | if (found) { | |
918 | qla2x00_delete_from_done_queue(ha, rp); | |
919 | sp_put(ha, rp); | |
920 | done++; | |
921 | break; | |
922 | } | |
923 | ||
924 | spin_unlock_irq(ha->host->host_lock); | |
925 | ||
926 | set_current_state(TASK_UNINTERRUPTIBLE); | |
927 | schedule_timeout(ABORT_POLLING_PERIOD); | |
928 | ||
929 | spin_lock_irq(ha->host->host_lock); | |
930 | ||
931 | } while ((max_wait_time--)); | |
932 | ||
933 | if (done) | |
934 | DEBUG2(printk(KERN_INFO "%s: found cmd=%p.\n", __func__, cmd)); | |
935 | ||
936 | return (done); | |
937 | } | |
938 | ||
939 | /* | |
940 | * qla2x00_wait_for_hba_online | |
941 | * Wait till the HBA is online after going through | |
942 | * <= MAX_RETRIES_OF_ISP_ABORT or | |
943 | * finally HBA is disabled ie marked offline | |
944 | * | |
945 | * Input: | |
946 | * ha - pointer to host adapter structure | |
947 | * | |
948 | * Note: | |
949 | * Does context switching-Release SPIN_LOCK | |
950 | * (if any) before calling this routine. | |
951 | * | |
952 | * Return: | |
953 | * Success (Adapter is online) : 0 | |
954 | * Failed (Adapter is offline/disabled) : 1 | |
955 | */ | |
956 | static int | |
957 | qla2x00_wait_for_hba_online(scsi_qla_host_t *ha) | |
958 | { | |
959 | int return_status; | |
960 | unsigned long wait_online; | |
961 | ||
962 | wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ); | |
963 | while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) || | |
964 | test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) || | |
965 | test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) || | |
966 | ha->dpc_active) && time_before(jiffies, wait_online)) { | |
967 | ||
968 | msleep(1000); | |
969 | } | |
970 | if (ha->flags.online) | |
971 | return_status = QLA_SUCCESS; | |
972 | else | |
973 | return_status = QLA_FUNCTION_FAILED; | |
974 | ||
975 | DEBUG2(printk("%s return_status=%d\n",__func__,return_status)); | |
976 | ||
977 | return (return_status); | |
978 | } | |
979 | ||
980 | /* | |
981 | * qla2x00_wait_for_loop_ready | |
982 | * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop | |
983 | * to be in LOOP_READY state. | |
984 | * Input: | |
985 | * ha - pointer to host adapter structure | |
986 | * | |
987 | * Note: | |
988 | * Does context switching-Release SPIN_LOCK | |
989 | * (if any) before calling this routine. | |
990 | * | |
991 | * | |
992 | * Return: | |
993 | * Success (LOOP_READY) : 0 | |
994 | * Failed (LOOP_NOT_READY) : 1 | |
995 | */ | |
996 | static inline int | |
997 | qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha) | |
998 | { | |
999 | int return_status = QLA_SUCCESS; | |
1000 | unsigned long loop_timeout ; | |
1001 | ||
1002 | /* wait for 5 min at the max for loop to be ready */ | |
1003 | loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ); | |
1004 | ||
1005 | while ((!atomic_read(&ha->loop_down_timer) && | |
1006 | atomic_read(&ha->loop_state) == LOOP_DOWN) || | |
1007 | test_bit(CFG_ACTIVE, &ha->cfg_flags) || | |
1008 | atomic_read(&ha->loop_state) != LOOP_READY) { | |
1009 | msleep(1000); | |
1010 | if (time_after_eq(jiffies, loop_timeout)) { | |
1011 | return_status = QLA_FUNCTION_FAILED; | |
1012 | break; | |
1013 | } | |
1014 | } | |
1015 | return (return_status); | |
1016 | } | |
1017 | ||
1018 | /************************************************************************** | |
1019 | * qla2xxx_eh_abort | |
1020 | * | |
1021 | * Description: | |
1022 | * The abort function will abort the specified command. | |
1023 | * | |
1024 | * Input: | |
1025 | * cmd = Linux SCSI command packet to be aborted. | |
1026 | * | |
1027 | * Returns: | |
1028 | * Either SUCCESS or FAILED. | |
1029 | * | |
1030 | * Note: | |
1031 | **************************************************************************/ | |
1032 | int | |
1033 | qla2xxx_eh_abort(struct scsi_cmnd *cmd) | |
1034 | { | |
1035 | int i; | |
1036 | int return_status = FAILED; | |
1037 | os_lun_t *q; | |
1038 | scsi_qla_host_t *ha; | |
1039 | scsi_qla_host_t *vis_ha; | |
1040 | srb_t *sp; | |
1041 | srb_t *rp; | |
1042 | struct list_head *list, *temp; | |
1043 | struct Scsi_Host *host; | |
1044 | uint8_t found = 0; | |
1045 | unsigned int b, t, l; | |
1046 | ||
1047 | /* Get the SCSI request ptr */ | |
1048 | sp = (srb_t *) CMD_SP(cmd); | |
1049 | ||
1050 | /* | |
1051 | * If sp is NULL, command is already returned. | |
1052 | * sp is NULLED just before we call back scsi_done | |
1053 | * | |
1054 | */ | |
1055 | if ((sp == NULL)) { | |
1056 | /* no action - we don't have command */ | |
1057 | qla_printk(KERN_INFO, to_qla_host(cmd->device->host), | |
1058 | "qla2xxx_eh_abort: cmd already done sp=%p\n", sp); | |
1059 | DEBUG(printk("qla2xxx_eh_abort: cmd already done sp=%p\n", sp);) | |
1060 | return SUCCESS; | |
1061 | } | |
1062 | if (sp) { | |
1063 | DEBUG(printk("qla2xxx_eh_abort: refcount %i \n", | |
1064 | atomic_read(&sp->ref_count));) | |
1065 | } | |
1066 | ||
1067 | vis_ha = (scsi_qla_host_t *) cmd->device->host->hostdata; | |
1068 | ha = (scsi_qla_host_t *)cmd->device->host->hostdata; | |
1069 | ||
1070 | host = ha->host; | |
1071 | ||
1072 | /* Generate LU queue on bus, target, LUN */ | |
1073 | b = cmd->device->channel; | |
1074 | t = cmd->device->id; | |
1075 | l = cmd->device->lun; | |
1076 | q = GET_LU_Q(vis_ha, t, l); | |
1077 | ||
1078 | qla_printk(KERN_INFO, ha, | |
1079 | "%s scsi(%ld:%d:%d:%d): cmd_timeout_in_sec=0x%x.\n", __func__, | |
1080 | ha->host_no, (int)b, (int)t, (int)l, | |
1081 | cmd->timeout_per_command / HZ); | |
1082 | ||
1083 | /* | |
1084 | * if no LUN queue then something is very wrong!!! | |
1085 | */ | |
1086 | if (q == NULL) { | |
1087 | qla_printk(KERN_WARNING, ha, | |
1088 | "qla2x00: (%x:%x:%x) No LUN queue.\n", b, t, l); | |
1089 | ||
1090 | /* no action - we don't have command */ | |
1091 | return FAILED; | |
1092 | } | |
1093 | ||
1094 | DEBUG2(printk("scsi(%ld): ABORTing cmd=%p sp=%p jiffies = 0x%lx, " | |
1095 | "timeout=%x, dpc_flags=%lx, vis_ha->dpc_flags=%lx q->flag=%lx\n", | |
1096 | ha->host_no, cmd, sp, jiffies, cmd->timeout_per_command / HZ, | |
1097 | ha->dpc_flags, vis_ha->dpc_flags, q->q_flag)); | |
1098 | DEBUG2(qla2x00_print_scsi_cmd(cmd)); | |
1099 | ||
1100 | spin_unlock_irq(ha->host->host_lock); | |
1101 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) { | |
1102 | DEBUG2(printk("%s failed:board disabled\n", __func__);) | |
1103 | spin_lock_irq(ha->host->host_lock); | |
1104 | return FAILED; | |
1105 | } | |
1106 | spin_lock_irq(ha->host->host_lock); | |
1107 | ||
1108 | /* Search done queue */ | |
1109 | spin_lock(&ha->list_lock); | |
1110 | list_for_each_safe(list, temp, &ha->done_queue) { | |
1111 | rp = list_entry(list, srb_t, list); | |
1112 | ||
1113 | if (cmd != rp->cmd) | |
1114 | continue; | |
1115 | ||
1116 | /* | |
1117 | * Found command.Remove it from done list. | |
1118 | * And proceed to post completion to scsi mid layer. | |
1119 | */ | |
1120 | return_status = SUCCESS; | |
1121 | found++; | |
1122 | qla2x00_delete_from_done_queue(ha, sp); | |
1123 | ||
1124 | break; | |
1125 | } /* list_for_each_safe() */ | |
1126 | spin_unlock(&ha->list_lock); | |
1127 | ||
1128 | /* | |
1129 | * Return immediately if the aborted command was already in the done | |
1130 | * queue | |
1131 | */ | |
1132 | if (found) { | |
1133 | qla_printk(KERN_INFO, ha, | |
1134 | "qla2xxx_eh_abort: Returning completed command=%p sp=%p\n", | |
1135 | cmd, sp); | |
1136 | sp_put(ha, sp); | |
1137 | return (return_status); | |
1138 | } | |
1139 | ||
1140 | ||
1141 | /* | |
1142 | * See if this command is in the retry queue | |
1143 | */ | |
1144 | DEBUG3(printk("qla2xxx_eh_abort: searching sp %p in retry " | |
1145 | "queue.\n", sp);) | |
1146 | ||
1147 | spin_lock(&ha->list_lock); | |
1148 | list_for_each_safe(list, temp, &ha->retry_queue) { | |
1149 | rp = list_entry(list, srb_t, list); | |
1150 | ||
1151 | if (cmd != rp->cmd) | |
1152 | continue; | |
1153 | ||
1154 | ||
1155 | DEBUG2(printk("qla2xxx_eh_abort: found " | |
1156 | "in retry queue. SP=%p\n", sp);) | |
1157 | ||
1158 | __del_from_retry_queue(ha, rp); | |
1159 | cmd->result = DID_ABORT << 16; | |
1160 | __add_to_done_queue(ha, rp); | |
1161 | ||
1162 | return_status = SUCCESS; | |
1163 | found++; | |
1164 | ||
1165 | break; | |
1166 | ||
1167 | } | |
1168 | spin_unlock(&ha->list_lock); | |
1169 | ||
1170 | ||
1171 | /* | |
1172 | * Our SP pointer points at the command we want to remove from the | |
1173 | * pending queue providing we haven't already sent it to the adapter. | |
1174 | */ | |
1175 | if (!found) { | |
1176 | DEBUG3(printk("qla2xxx_eh_abort: searching sp %p " | |
1177 | "in pending queue.\n", sp);) | |
1178 | ||
1179 | spin_lock(&vis_ha->list_lock); | |
1180 | list_for_each_safe(list, temp, &vis_ha->pending_queue) { | |
1181 | rp = list_entry(list, srb_t, list); | |
1182 | ||
1183 | if (rp->cmd != cmd) | |
1184 | continue; | |
1185 | ||
1186 | /* Remove srb from LUN queue. */ | |
1187 | rp->flags |= SRB_ABORTED; | |
1188 | ||
1189 | DEBUG2(printk("qla2xxx_eh_abort: Cmd in pending queue." | |
1190 | " serial_number %ld.\n", | |
1191 | sp->cmd->serial_number);) | |
1192 | ||
1193 | __del_from_pending_queue(vis_ha, rp); | |
1194 | cmd->result = DID_ABORT << 16; | |
1195 | ||
1196 | __add_to_done_queue(vis_ha, rp); | |
1197 | ||
1198 | return_status = SUCCESS; | |
1199 | ||
1200 | found++; | |
1201 | break; | |
1202 | } /* list_for_each_safe() */ | |
1203 | spin_unlock(&vis_ha->list_lock); | |
1204 | } /*End of if !found */ | |
1205 | ||
1206 | if (!found) { /* find the command in our active list */ | |
1207 | DEBUG3(printk("qla2xxx_eh_abort: searching sp %p " | |
1208 | "in outstanding queue.\n", sp);) | |
1209 | ||
1210 | spin_lock(&ha->hardware_lock); | |
1211 | for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) { | |
1212 | sp = ha->outstanding_cmds[i]; | |
1213 | ||
1214 | if (sp == NULL) | |
1215 | continue; | |
1216 | ||
1217 | if (sp->cmd != cmd) | |
1218 | continue; | |
1219 | ||
1220 | DEBUG2(printk("qla2xxx_eh_abort(%ld): aborting sp %p " | |
1221 | "from RISC. pid=%ld sp->state=%x q->q_flag=%lx\n", | |
1222 | ha->host_no, sp, sp->cmd->serial_number, | |
1223 | sp->state, q->q_flag);) | |
1224 | DEBUG(qla2x00_print_scsi_cmd(cmd);) | |
1225 | ||
1226 | /* Get a reference to the sp and drop the lock.*/ | |
1227 | sp_get(ha, sp); | |
1228 | ||
1229 | spin_unlock(&ha->hardware_lock); | |
1230 | spin_unlock_irq(ha->host->host_lock); | |
1231 | ||
1232 | if (qla2x00_abort_command(ha, sp)) { | |
1233 | DEBUG2(printk("qla2xxx_eh_abort: abort_command " | |
1234 | "mbx failed.\n");) | |
1235 | return_status = FAILED; | |
1236 | } else { | |
1237 | DEBUG3(printk("qla2xxx_eh_abort: abort_command " | |
1238 | " mbx success.\n");) | |
1239 | return_status = SUCCESS; | |
1240 | } | |
1241 | ||
1242 | sp_put(ha,sp); | |
1243 | ||
1244 | spin_lock_irq(ha->host->host_lock); | |
1245 | spin_lock(&ha->hardware_lock); | |
1246 | ||
1247 | /* | |
1248 | * Regardless of mailbox command status, go check on | |
1249 | * done queue just in case the sp is already done. | |
1250 | */ | |
1251 | break; | |
1252 | ||
1253 | }/*End of for loop */ | |
1254 | spin_unlock(&ha->hardware_lock); | |
1255 | ||
1256 | } /*End of if !found */ | |
1257 | ||
1258 | /* Waiting for our command in done_queue to be returned to OS.*/ | |
1259 | if (qla2x00_eh_wait_on_command(ha, cmd) != 0) { | |
1260 | DEBUG2(printk("qla2xxx_eh_abort: cmd returned back to OS.\n");) | |
1261 | return_status = SUCCESS; | |
1262 | } | |
1263 | ||
1264 | if (return_status == FAILED) { | |
1265 | qla_printk(KERN_INFO, ha, | |
1266 | "qla2xxx_eh_abort Exiting: status=Failed\n"); | |
1267 | return FAILED; | |
1268 | } | |
1269 | ||
1270 | DEBUG2(printk("qla2xxx_eh_abort: Exiting. return_status=0x%x.\n", | |
1271 | return_status)); | |
1272 | ||
1273 | return return_status; | |
1274 | } | |
1275 | ||
1276 | /************************************************************************** | |
1277 | * qla2x00_eh_wait_for_pending_target_commands | |
1278 | * | |
1279 | * Description: | |
1280 | * Waits for all the commands to come back from the specified target. | |
1281 | * | |
1282 | * Input: | |
1283 | * ha - pointer to scsi_qla_host structure. | |
1284 | * t - target | |
1285 | * Returns: | |
1286 | * Either SUCCESS or FAILED. | |
1287 | * | |
1288 | * Note: | |
1289 | **************************************************************************/ | |
1290 | static int | |
1291 | qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t) | |
1292 | { | |
1293 | int cnt; | |
1294 | int status; | |
1295 | srb_t *sp; | |
1296 | struct scsi_cmnd *cmd; | |
1297 | ||
1298 | status = 0; | |
1299 | ||
1300 | /* | |
1301 | * Waiting for all commands for the designated target in the active | |
1302 | * array | |
1303 | */ | |
1304 | for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) { | |
1305 | spin_lock(&ha->hardware_lock); | |
1306 | sp = ha->outstanding_cmds[cnt]; | |
1307 | if (sp) { | |
1308 | cmd = sp->cmd; | |
1309 | spin_unlock(&ha->hardware_lock); | |
1310 | if (cmd->device->id == t) { | |
1311 | if (!qla2x00_eh_wait_on_command(ha, cmd)) { | |
1312 | status = 1; | |
1313 | break; | |
1314 | } | |
1315 | } | |
1316 | } | |
1317 | else { | |
1318 | spin_unlock(&ha->hardware_lock); | |
1319 | } | |
1320 | } | |
1321 | return (status); | |
1322 | } | |
1323 | ||
1324 | ||
1325 | /************************************************************************** | |
1326 | * qla2xxx_eh_device_reset | |
1327 | * | |
1328 | * Description: | |
1329 | * The device reset function will reset the target and abort any | |
1330 | * executing commands. | |
1331 | * | |
1332 | * NOTE: The use of SP is undefined within this context. Do *NOT* | |
1333 | * attempt to use this value, even if you determine it is | |
1334 | * non-null. | |
1335 | * | |
1336 | * Input: | |
1337 | * cmd = Linux SCSI command packet of the command that cause the | |
1338 | * bus device reset. | |
1339 | * | |
1340 | * Returns: | |
1341 | * SUCCESS/FAILURE (defined as macro in scsi.h). | |
1342 | * | |
1343 | **************************************************************************/ | |
1344 | int | |
1345 | qla2xxx_eh_device_reset(struct scsi_cmnd *cmd) | |
1346 | { | |
1347 | int return_status; | |
1348 | unsigned int b, t, l; | |
1349 | scsi_qla_host_t *ha; | |
1350 | os_tgt_t *tq; | |
1351 | os_lun_t *lq; | |
1352 | fc_port_t *fcport_to_reset; | |
1353 | srb_t *rp; | |
1354 | struct list_head *list, *temp; | |
1355 | ||
1356 | return_status = FAILED; | |
1357 | if (cmd == NULL) { | |
1358 | printk(KERN_INFO | |
1359 | "%s(): **** SCSI mid-layer passing in NULL cmd\n", | |
1360 | __func__); | |
1361 | ||
1362 | return (return_status); | |
1363 | } | |
1364 | ||
1365 | b = cmd->device->channel; | |
1366 | t = cmd->device->id; | |
1367 | l = cmd->device->lun; | |
1368 | ha = (scsi_qla_host_t *)cmd->device->host->hostdata; | |
1369 | ||
1370 | tq = TGT_Q(ha, t); | |
1371 | if (tq == NULL) { | |
1372 | qla_printk(KERN_INFO, ha, | |
1373 | "%s(): **** CMD derives a NULL TGT_Q\n", __func__); | |
1374 | ||
1375 | return (return_status); | |
1376 | } | |
1377 | lq = (os_lun_t *)LUN_Q(ha, t, l); | |
1378 | if (lq == NULL) { | |
1379 | printk(KERN_INFO | |
1380 | "%s(): **** CMD derives a NULL LUN_Q\n", __func__); | |
1381 | ||
1382 | return (return_status); | |
1383 | } | |
1384 | fcport_to_reset = lq->fclun->fcport; | |
1385 | ||
1386 | /* If we are coming in from the back-door, stall I/O until complete. */ | |
1387 | if (!cmd->device->host->eh_active) | |
1388 | set_bit(TQF_SUSPENDED, &tq->flags); | |
1389 | ||
1390 | qla_printk(KERN_INFO, ha, | |
1391 | "scsi(%ld:%d:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, b, t, l); | |
1392 | ||
1393 | DEBUG2(printk(KERN_INFO | |
1394 | "scsi(%ld): DEVICE_RESET cmd=%p jiffies = 0x%lx, timeout=%x, " | |
1395 | "dpc_flags=%lx, status=%x allowed=%d cmd.state=%x\n", | |
1396 | ha->host_no, cmd, jiffies, cmd->timeout_per_command / HZ, | |
1397 | ha->dpc_flags, cmd->result, cmd->allowed, cmd->state)); | |
1398 | ||
1399 | /* Clear commands from the retry queue. */ | |
1400 | spin_lock(&ha->list_lock); | |
1401 | list_for_each_safe(list, temp, &ha->retry_queue) { | |
1402 | rp = list_entry(list, srb_t, list); | |
1403 | ||
1404 | if (t != rp->cmd->device->id) | |
1405 | continue; | |
1406 | ||
1407 | DEBUG2(printk(KERN_INFO | |
1408 | "qla2xxx_eh_reset: found in retry queue. SP=%p\n", rp)); | |
1409 | ||
1410 | __del_from_retry_queue(ha, rp); | |
1411 | rp->cmd->result = DID_RESET << 16; | |
1412 | __add_to_done_queue(ha, rp); | |
1413 | } | |
1414 | spin_unlock(&ha->list_lock); | |
1415 | ||
1416 | spin_unlock_irq(ha->host->host_lock); | |
1417 | ||
1418 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) { | |
1419 | DEBUG2(printk(KERN_INFO | |
1420 | "%s failed:board disabled\n",__func__)); | |
1421 | ||
1422 | spin_lock_irq(ha->host->host_lock); | |
1423 | goto eh_dev_reset_done; | |
1424 | } | |
1425 | ||
1426 | if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) { | |
1427 | if (qla2x00_device_reset(ha, fcport_to_reset) == 0) { | |
1428 | return_status = SUCCESS; | |
1429 | } | |
1430 | ||
1431 | #if defined(LOGOUT_AFTER_DEVICE_RESET) | |
1432 | if (return_status == SUCCESS) { | |
1433 | if (fcport_to_reset->flags & FC_FABRIC_DEVICE) { | |
1434 | qla2x00_fabric_logout(ha, | |
1435 | fcport_to_reset->loop_id); | |
1436 | qla2x00_mark_device_lost(ha, fcport_to_reset); | |
1437 | } | |
1438 | } | |
1439 | #endif | |
1440 | } else { | |
1441 | DEBUG2(printk(KERN_INFO | |
1442 | "%s failed: loop not ready\n",__func__);) | |
1443 | } | |
1444 | ||
1445 | spin_lock_irq(ha->host->host_lock); | |
1446 | ||
1447 | if (return_status == FAILED) { | |
1448 | DEBUG3(printk("%s(%ld): device reset failed\n", | |
1449 | __func__, ha->host_no)); | |
1450 | qla_printk(KERN_INFO, ha, "%s: device reset failed\n", | |
1451 | __func__); | |
1452 | ||
1453 | goto eh_dev_reset_done; | |
1454 | } | |
1455 | ||
1456 | /* | |
1457 | * If we are coming down the EH path, wait for all commands to | |
1458 | * complete for the device. | |
1459 | */ | |
1460 | if (cmd->device->host->eh_active) { | |
1461 | if (qla2x00_eh_wait_for_pending_target_commands(ha, t)) | |
1462 | return_status = FAILED; | |
1463 | ||
1464 | if (return_status == FAILED) { | |
1465 | DEBUG3(printk("%s(%ld): failed while waiting for " | |
1466 | "commands\n", __func__, ha->host_no)); | |
1467 | qla_printk(KERN_INFO, ha, | |
1468 | "%s: failed while waiting for commands\n", | |
1469 | __func__); | |
1470 | ||
1471 | goto eh_dev_reset_done; | |
1472 | } | |
1473 | } | |
1474 | ||
1475 | qla_printk(KERN_INFO, ha, | |
1476 | "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", | |
1477 | ha->host_no, b, t, l); | |
1478 | ||
1479 | eh_dev_reset_done: | |
1480 | ||
1481 | if (!cmd->device->host->eh_active) | |
1482 | clear_bit(TQF_SUSPENDED, &tq->flags); | |
1483 | ||
1484 | return (return_status); | |
1485 | } | |
1486 | ||
1487 | /************************************************************************** | |
1488 | * qla2x00_eh_wait_for_pending_commands | |
1489 | * | |
1490 | * Description: | |
1491 | * Waits for all the commands to come back from the specified host. | |
1492 | * | |
1493 | * Input: | |
1494 | * ha - pointer to scsi_qla_host structure. | |
1495 | * | |
1496 | * Returns: | |
1497 | * 1 : SUCCESS | |
1498 | * 0 : FAILED | |
1499 | * | |
1500 | * Note: | |
1501 | **************************************************************************/ | |
1502 | static int | |
1503 | qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha) | |
1504 | { | |
1505 | int cnt; | |
1506 | int status; | |
1507 | srb_t *sp; | |
1508 | struct scsi_cmnd *cmd; | |
1509 | ||
1510 | status = 1; | |
1511 | ||
1512 | /* | |
1513 | * Waiting for all commands for the designated target in the active | |
1514 | * array | |
1515 | */ | |
1516 | for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) { | |
1517 | spin_lock(&ha->hardware_lock); | |
1518 | sp = ha->outstanding_cmds[cnt]; | |
1519 | if (sp) { | |
1520 | cmd = sp->cmd; | |
1521 | spin_unlock(&ha->hardware_lock); | |
1522 | status = qla2x00_eh_wait_on_command(ha, cmd); | |
1523 | if (status == 0) | |
1524 | break; | |
1525 | } | |
1526 | else { | |
1527 | spin_unlock(&ha->hardware_lock); | |
1528 | } | |
1529 | } | |
1530 | return (status); | |
1531 | } | |
1532 | ||
1533 | ||
1534 | /************************************************************************** | |
1535 | * qla2xxx_eh_bus_reset | |
1536 | * | |
1537 | * Description: | |
1538 | * The bus reset function will reset the bus and abort any executing | |
1539 | * commands. | |
1540 | * | |
1541 | * Input: | |
1542 | * cmd = Linux SCSI command packet of the command that cause the | |
1543 | * bus reset. | |
1544 | * | |
1545 | * Returns: | |
1546 | * SUCCESS/FAILURE (defined as macro in scsi.h). | |
1547 | * | |
1548 | **************************************************************************/ | |
1549 | int | |
1550 | qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd) | |
1551 | { | |
1552 | scsi_qla_host_t *ha; | |
1553 | srb_t *sp; | |
1554 | int rval = FAILED; | |
1555 | ||
1556 | ha = (scsi_qla_host_t *) cmd->device->host->hostdata; | |
1557 | sp = (srb_t *) CMD_SP(cmd); | |
1558 | ||
1559 | qla_printk(KERN_INFO, ha, | |
1560 | "scsi(%ld:%d:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, | |
1561 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
1562 | ||
1563 | spin_unlock_irq(ha->host->host_lock); | |
1564 | ||
1565 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) { | |
1566 | DEBUG2(printk("%s failed:board disabled\n",__func__)); | |
1567 | spin_lock_irq(ha->host->host_lock); | |
1568 | return FAILED; | |
1569 | } | |
1570 | ||
1571 | if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) { | |
1572 | if (qla2x00_loop_reset(ha) == QLA_SUCCESS) | |
1573 | rval = SUCCESS; | |
1574 | } | |
1575 | ||
1576 | spin_lock_irq(ha->host->host_lock); | |
1577 | if (rval == FAILED) | |
1578 | goto out; | |
1579 | ||
1580 | /* Waiting for our command in done_queue to be returned to OS.*/ | |
1581 | if (cmd->device->host->eh_active) | |
1582 | if (!qla2x00_eh_wait_for_pending_commands(ha)) | |
1583 | rval = FAILED; | |
1584 | ||
1585 | out: | |
1586 | qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, | |
1587 | (rval == FAILED) ? "failed" : "succeded"); | |
1588 | ||
1589 | return rval; | |
1590 | } | |
1591 | ||
1592 | /************************************************************************** | |
1593 | * qla2xxx_eh_host_reset | |
1594 | * | |
1595 | * Description: | |
1596 | * The reset function will reset the Adapter. | |
1597 | * | |
1598 | * Input: | |
1599 | * cmd = Linux SCSI command packet of the command that cause the | |
1600 | * adapter reset. | |
1601 | * | |
1602 | * Returns: | |
1603 | * Either SUCCESS or FAILED. | |
1604 | * | |
1605 | * Note: | |
1606 | **************************************************************************/ | |
1607 | int | |
1608 | qla2xxx_eh_host_reset(struct scsi_cmnd *cmd) | |
1609 | { | |
1610 | scsi_qla_host_t *ha = (scsi_qla_host_t *)cmd->device->host->hostdata; | |
1611 | int rval = SUCCESS; | |
1612 | ||
1613 | /* Display which one we're actually resetting for debug. */ | |
1614 | DEBUG(printk("qla2xxx_eh_host_reset:Resetting scsi(%ld).\n", | |
1615 | ha->host_no)); | |
1616 | ||
1617 | /* | |
1618 | * Now issue reset. | |
1619 | */ | |
1620 | qla_printk(KERN_INFO, ha, | |
1621 | "scsi(%ld:%d:%d:%d): ADAPTER RESET issued.\n", ha->host_no, | |
1622 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
1623 | ||
1624 | spin_unlock_irq(ha->host->host_lock); | |
1625 | ||
1626 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) | |
1627 | goto board_disabled; | |
1628 | ||
1629 | /* | |
1630 | * Fixme-may be dpc thread is active and processing | |
1631 | * loop_resync,so wait a while for it to | |
1632 | * be completed and then issue big hammer.Otherwise | |
1633 | * it may cause I/O failure as big hammer marks the | |
1634 | * devices as lost kicking of the port_down_timer | |
1635 | * while dpc is stuck for the mailbox to complete. | |
1636 | */ | |
1637 | /* Blocking call-Does context switching if loop is Not Ready */ | |
1638 | qla2x00_wait_for_loop_ready(ha); | |
1639 | set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); | |
1640 | if (qla2x00_abort_isp(ha)) { | |
1641 | clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); | |
1642 | /* failed. schedule dpc to try */ | |
1643 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
1644 | ||
1645 | if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) | |
1646 | goto board_disabled; | |
1647 | } | |
1648 | ||
1649 | clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); | |
1650 | ||
1651 | spin_lock_irq(ha->host->host_lock); | |
1652 | if (rval == FAILED) | |
1653 | goto out; | |
1654 | ||
1655 | /* Waiting for our command in done_queue to be returned to OS.*/ | |
1656 | if (!qla2x00_eh_wait_for_pending_commands(ha)) | |
1657 | rval = FAILED; | |
1658 | ||
1659 | out: | |
1660 | qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, | |
1661 | (rval == FAILED) ? "failed" : "succeded"); | |
1662 | ||
1663 | return rval; | |
1664 | ||
1665 | board_disabled: | |
1666 | spin_lock_irq(ha->host->host_lock); | |
1667 | ||
1668 | qla_printk(KERN_INFO, ha, "%s: failed:board disabled\n", __func__); | |
1669 | return FAILED; | |
1670 | } | |
1671 | ||
1672 | ||
1673 | /* | |
1674 | * qla2x00_loop_reset | |
1675 | * Issue loop reset. | |
1676 | * | |
1677 | * Input: | |
1678 | * ha = adapter block pointer. | |
1679 | * | |
1680 | * Returns: | |
1681 | * 0 = success | |
1682 | */ | |
1683 | static int | |
1684 | qla2x00_loop_reset(scsi_qla_host_t *ha) | |
1685 | { | |
1686 | int status = QLA_SUCCESS; | |
1687 | uint16_t t; | |
1688 | os_tgt_t *tq; | |
1689 | ||
1690 | if (ha->flags.enable_lip_reset) { | |
1691 | status = qla2x00_lip_reset(ha); | |
1692 | } | |
1693 | ||
1694 | if (status == QLA_SUCCESS && ha->flags.enable_target_reset) { | |
1695 | for (t = 0; t < MAX_FIBRE_DEVICES; t++) { | |
1696 | if ((tq = TGT_Q(ha, t)) == NULL) | |
1697 | continue; | |
1698 | ||
1699 | if (tq->fcport == NULL) | |
1700 | continue; | |
1701 | ||
1702 | status = qla2x00_target_reset(ha, 0, t); | |
1703 | if (status != QLA_SUCCESS) { | |
1704 | break; | |
1705 | } | |
1706 | } | |
1707 | } | |
1708 | ||
1709 | if (status == QLA_SUCCESS && | |
1710 | ((!ha->flags.enable_target_reset && | |
1711 | !ha->flags.enable_lip_reset) || | |
1712 | ha->flags.enable_lip_full_login)) { | |
1713 | ||
1714 | status = qla2x00_full_login_lip(ha); | |
1715 | } | |
1716 | ||
1717 | /* Issue marker command only when we are going to start the I/O */ | |
1718 | ha->marker_needed = 1; | |
1719 | ||
1720 | if (status) { | |
1721 | /* Empty */ | |
1722 | DEBUG2_3(printk("%s(%ld): **** FAILED ****\n", | |
1723 | __func__, | |
1724 | ha->host_no);) | |
1725 | } else { | |
1726 | /* Empty */ | |
1727 | DEBUG3(printk("%s(%ld): exiting normally.\n", | |
1728 | __func__, | |
1729 | ha->host_no);) | |
1730 | } | |
1731 | ||
1732 | return(status); | |
1733 | } | |
1734 | ||
1735 | /* | |
1736 | * qla2x00_device_reset | |
1737 | * Issue bus device reset message to the target. | |
1738 | * | |
1739 | * Input: | |
1740 | * ha = adapter block pointer. | |
1741 | * t = SCSI ID. | |
1742 | * TARGET_QUEUE_LOCK must be released. | |
1743 | * ADAPTER_STATE_LOCK must be released. | |
1744 | * | |
1745 | * Context: | |
1746 | * Kernel context. | |
1747 | */ | |
1748 | static int | |
1749 | qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport) | |
1750 | { | |
1751 | /* Abort Target command will clear Reservation */ | |
1752 | return qla2x00_abort_target(reset_fcport); | |
1753 | } | |
1754 | ||
1755 | /************************************************************************** | |
1756 | * qla2xxx_slave_configure | |
1757 | * | |
1758 | * Description: | |
1759 | **************************************************************************/ | |
1760 | int | |
1761 | qla2xxx_slave_configure(struct scsi_device *sdev) | |
1762 | { | |
1763 | scsi_qla_host_t *ha = to_qla_host(sdev->host); | |
1764 | int queue_depth; | |
1765 | ||
1766 | if (IS_QLA2100(ha) || IS_QLA2200(ha)) | |
1767 | queue_depth = 16; | |
1768 | else | |
1769 | queue_depth = 32; | |
1770 | ||
1771 | if (sdev->tagged_supported) { | |
1772 | if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU) | |
1773 | queue_depth = ql2xmaxqdepth; | |
1774 | ||
1775 | ql2xmaxqdepth = queue_depth; | |
1776 | ||
1777 | scsi_activate_tcq(sdev, queue_depth); | |
1778 | ||
1779 | qla_printk(KERN_INFO, ha, | |
1780 | "scsi(%d:%d:%d:%d): Enabled tagged queuing, queue " | |
1781 | "depth %d.\n", | |
1782 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun, | |
1783 | sdev->queue_depth); | |
1784 | } else { | |
1785 | scsi_adjust_queue_depth(sdev, 0 /* TCQ off */, | |
1786 | sdev->host->hostt->cmd_per_lun /* 3 */); | |
1787 | } | |
1788 | ||
1789 | return (0); | |
1790 | } | |
1791 | ||
1792 | /** | |
1793 | * qla2x00_config_dma_addressing() - Configure OS DMA addressing method. | |
1794 | * @ha: HA context | |
1795 | * | |
1796 | * At exit, the @ha's flags.enable_64bit_addressing set to indicated | |
1797 | * supported addressing method. | |
1798 | */ | |
1799 | static void | |
1800 | qla2x00_config_dma_addressing(scsi_qla_host_t *ha) | |
1801 | { | |
1802 | /* Assume 32bit DMA address */ | |
1803 | ha->flags.enable_64bit_addressing = 0; | |
1804 | ha->calc_request_entries = qla2x00_calc_iocbs_32; | |
1805 | ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_32; | |
1806 | ||
1807 | /* | |
1808 | * Given the two variants pci_set_dma_mask(), allow the compiler to | |
1809 | * assist in setting the proper dma mask. | |
1810 | */ | |
1811 | if (sizeof(dma_addr_t) > 4) { | |
1812 | if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) { | |
1813 | ha->flags.enable_64bit_addressing = 1; | |
1814 | ha->calc_request_entries = qla2x00_calc_iocbs_64; | |
1815 | ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_64; | |
1816 | ||
1817 | if (pci_set_consistent_dma_mask(ha->pdev, | |
1818 | DMA_64BIT_MASK)) { | |
1819 | qla_printk(KERN_DEBUG, ha, | |
1820 | "Failed to set 64 bit PCI consistent mask; " | |
1821 | "using 32 bit.\n"); | |
1822 | pci_set_consistent_dma_mask(ha->pdev, | |
1823 | DMA_32BIT_MASK); | |
1824 | } | |
1825 | } else { | |
1826 | qla_printk(KERN_DEBUG, ha, | |
1827 | "Failed to set 64 bit PCI DMA mask, falling back " | |
1828 | "to 32 bit MASK.\n"); | |
1829 | pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); | |
1830 | } | |
1831 | } else { | |
1832 | pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); | |
1833 | } | |
1834 | } | |
1835 | ||
1836 | static int | |
1837 | qla2x00_iospace_config(scsi_qla_host_t *ha) | |
1838 | { | |
1839 | unsigned long pio, pio_len, pio_flags; | |
1840 | unsigned long mmio, mmio_len, mmio_flags; | |
1841 | ||
1842 | /* We only need PIO for Flash operations on ISP2312 v2 chips. */ | |
1843 | pio = pci_resource_start(ha->pdev, 0); | |
1844 | pio_len = pci_resource_len(ha->pdev, 0); | |
1845 | pio_flags = pci_resource_flags(ha->pdev, 0); | |
1846 | if (pio_flags & IORESOURCE_IO) { | |
1847 | if (pio_len < MIN_IOBASE_LEN) { | |
1848 | qla_printk(KERN_WARNING, ha, | |
1849 | "Invalid PCI I/O region size (%s)...\n", | |
1850 | pci_name(ha->pdev)); | |
1851 | pio = 0; | |
1852 | } | |
1853 | } else { | |
1854 | qla_printk(KERN_WARNING, ha, | |
1855 | "region #0 not a PIO resource (%s)...\n", | |
1856 | pci_name(ha->pdev)); | |
1857 | pio = 0; | |
1858 | } | |
1859 | ||
1860 | /* Use MMIO operations for all accesses. */ | |
1861 | mmio = pci_resource_start(ha->pdev, 1); | |
1862 | mmio_len = pci_resource_len(ha->pdev, 1); | |
1863 | mmio_flags = pci_resource_flags(ha->pdev, 1); | |
1864 | ||
1865 | if (!(mmio_flags & IORESOURCE_MEM)) { | |
1866 | qla_printk(KERN_ERR, ha, | |
1867 | "region #0 not an MMIO resource (%s), aborting\n", | |
1868 | pci_name(ha->pdev)); | |
1869 | goto iospace_error_exit; | |
1870 | } | |
1871 | if (mmio_len < MIN_IOBASE_LEN) { | |
1872 | qla_printk(KERN_ERR, ha, | |
1873 | "Invalid PCI mem region size (%s), aborting\n", | |
1874 | pci_name(ha->pdev)); | |
1875 | goto iospace_error_exit; | |
1876 | } | |
1877 | ||
1878 | if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) { | |
1879 | qla_printk(KERN_WARNING, ha, | |
1880 | "Failed to reserve PIO/MMIO regions (%s)\n", | |
1881 | pci_name(ha->pdev)); | |
1882 | ||
1883 | goto iospace_error_exit; | |
1884 | } | |
1885 | ||
1886 | ha->pio_address = pio; | |
1887 | ha->pio_length = pio_len; | |
1888 | ha->iobase = ioremap(mmio, MIN_IOBASE_LEN); | |
1889 | if (!ha->iobase) { | |
1890 | qla_printk(KERN_ERR, ha, | |
1891 | "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev)); | |
1892 | ||
1893 | goto iospace_error_exit; | |
1894 | } | |
1895 | ||
1896 | return (0); | |
1897 | ||
1898 | iospace_error_exit: | |
1899 | return (-ENOMEM); | |
1900 | } | |
1901 | ||
1902 | /* | |
1903 | * PCI driver interface | |
1904 | */ | |
1905 | int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info) | |
1906 | { | |
1907 | int ret; | |
1908 | device_reg_t __iomem *reg; | |
1909 | struct Scsi_Host *host; | |
1910 | scsi_qla_host_t *ha; | |
1911 | unsigned long flags = 0; | |
1912 | unsigned long wait_switch = 0; | |
1913 | char pci_info[20]; | |
1914 | char fw_str[30]; | |
1915 | ||
1916 | if (pci_enable_device(pdev)) | |
1917 | return -1; | |
1918 | ||
1919 | host = scsi_host_alloc(&qla2x00_driver_template, | |
1920 | sizeof(scsi_qla_host_t)); | |
1921 | if (host == NULL) { | |
1922 | printk(KERN_WARNING | |
1923 | "qla2xxx: Couldn't allocate host from scsi layer!\n"); | |
1924 | goto probe_disable_device; | |
1925 | } | |
1926 | ||
1927 | /* Clear our data area */ | |
1928 | ha = (scsi_qla_host_t *)host->hostdata; | |
1929 | memset(ha, 0, sizeof(scsi_qla_host_t)); | |
1930 | ||
1931 | ha->pdev = pdev; | |
1932 | ha->host = host; | |
1933 | ha->host_no = host->host_no; | |
1934 | ha->brd_info = brd_info; | |
1935 | sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no); | |
1936 | ||
1937 | /* Configure PCI I/O space */ | |
1938 | ret = qla2x00_iospace_config(ha); | |
1939 | if (ret != 0) { | |
1940 | goto probe_failed; | |
1941 | } | |
1942 | ||
1943 | /* Sanitize the information from PCI BIOS. */ | |
1944 | host->irq = pdev->irq; | |
1945 | ||
1946 | qla_printk(KERN_INFO, ha, | |
1947 | "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name, | |
1948 | host->irq, ha->iobase); | |
1949 | ||
1950 | spin_lock_init(&ha->hardware_lock); | |
1951 | ||
1952 | /* 4.23 Initialize /proc/scsi/qla2x00 counters */ | |
1953 | ha->actthreads = 0; | |
1954 | ha->qthreads = 0; | |
1955 | ha->total_isr_cnt = 0; | |
1956 | ha->total_isp_aborts = 0; | |
1957 | ha->total_lip_cnt = 0; | |
1958 | ha->total_dev_errs = 0; | |
1959 | ha->total_ios = 0; | |
1960 | ha->total_bytes = 0; | |
1961 | ||
1962 | ha->prev_topology = 0; | |
1963 | ha->ports = MAX_BUSES; | |
1964 | ||
1965 | if (IS_QLA2100(ha)) { | |
1966 | ha->max_targets = MAX_TARGETS_2100; | |
1967 | ha->mbx_count = MAILBOX_REGISTER_COUNT_2100; | |
1968 | ha->request_q_length = REQUEST_ENTRY_CNT_2100; | |
1969 | ha->response_q_length = RESPONSE_ENTRY_CNT_2100; | |
1970 | ha->last_loop_id = SNS_LAST_LOOP_ID_2100; | |
1971 | host->sg_tablesize = 32; | |
1972 | } else if (IS_QLA2200(ha)) { | |
1973 | ha->max_targets = MAX_TARGETS_2200; | |
1974 | ha->mbx_count = MAILBOX_REGISTER_COUNT; | |
1975 | ha->request_q_length = REQUEST_ENTRY_CNT_2200; | |
1976 | ha->response_q_length = RESPONSE_ENTRY_CNT_2100; | |
1977 | ha->last_loop_id = SNS_LAST_LOOP_ID_2100; | |
1978 | } else /*if (IS_QLA2300(ha))*/ { | |
1979 | ha->max_targets = MAX_TARGETS_2200; | |
1980 | ha->mbx_count = MAILBOX_REGISTER_COUNT; | |
1981 | ha->request_q_length = REQUEST_ENTRY_CNT_2200; | |
1982 | ha->response_q_length = RESPONSE_ENTRY_CNT_2300; | |
1983 | ha->last_loop_id = SNS_LAST_LOOP_ID_2300; | |
1984 | } | |
1985 | host->can_queue = ha->request_q_length + 128; | |
1986 | ||
1987 | /* load the F/W, read paramaters, and init the H/W */ | |
1988 | ha->instance = num_hosts; | |
1989 | ||
1990 | init_MUTEX(&ha->mbx_cmd_sem); | |
1991 | init_MUTEX_LOCKED(&ha->mbx_intr_sem); | |
1992 | ||
1993 | INIT_LIST_HEAD(&ha->list); | |
1994 | INIT_LIST_HEAD(&ha->fcports); | |
1995 | INIT_LIST_HEAD(&ha->rscn_fcports); | |
1996 | INIT_LIST_HEAD(&ha->done_queue); | |
1997 | INIT_LIST_HEAD(&ha->retry_queue); | |
1998 | INIT_LIST_HEAD(&ha->scsi_retry_queue); | |
1999 | INIT_LIST_HEAD(&ha->pending_queue); | |
2000 | ||
2001 | /* | |
2002 | * These locks are used to prevent more than one CPU | |
2003 | * from modifying the queue at the same time. The | |
2004 | * higher level "host_lock" will reduce most | |
2005 | * contention for these locks. | |
2006 | */ | |
2007 | spin_lock_init(&ha->mbx_reg_lock); | |
2008 | spin_lock_init(&ha->list_lock); | |
2009 | ||
2010 | ha->dpc_pid = -1; | |
2011 | init_completion(&ha->dpc_inited); | |
2012 | init_completion(&ha->dpc_exited); | |
2013 | ||
2014 | qla2x00_config_dma_addressing(ha); | |
2015 | if (qla2x00_mem_alloc(ha)) { | |
2016 | qla_printk(KERN_WARNING, ha, | |
2017 | "[ERROR] Failed to allocate memory for adapter\n"); | |
2018 | ||
2019 | goto probe_failed; | |
2020 | } | |
2021 | ||
2022 | if (qla2x00_initialize_adapter(ha) && | |
2023 | !(ha->device_flags & DFLG_NO_CABLE)) { | |
2024 | ||
2025 | qla_printk(KERN_WARNING, ha, | |
2026 | "Failed to initialize adapter\n"); | |
2027 | ||
2028 | DEBUG2(printk("scsi(%ld): Failed to initialize adapter - " | |
2029 | "Adapter flags %x.\n", | |
2030 | ha->host_no, ha->device_flags)); | |
2031 | ||
2032 | goto probe_failed; | |
2033 | } | |
2034 | ||
2035 | /* | |
2036 | * Startup the kernel thread for this host adapter | |
2037 | */ | |
2038 | ha->dpc_should_die = 0; | |
2039 | ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0); | |
2040 | if (ha->dpc_pid < 0) { | |
2041 | qla_printk(KERN_WARNING, ha, | |
2042 | "Unable to start DPC thread!\n"); | |
2043 | ||
2044 | goto probe_failed; | |
2045 | } | |
2046 | wait_for_completion(&ha->dpc_inited); | |
2047 | ||
2048 | host->this_id = 255; | |
2049 | host->cmd_per_lun = 3; | |
2050 | host->max_cmd_len = MAX_CMDSZ; | |
2051 | host->max_channel = ha->ports - 1; | |
2052 | host->max_lun = ha->max_luns; | |
2053 | BUG_ON(qla2xxx_transport_template == NULL); | |
2054 | host->transportt = qla2xxx_transport_template; | |
2055 | host->unique_id = ha->instance; | |
2056 | host->max_id = ha->max_targets; | |
2057 | ||
2058 | if (IS_QLA2100(ha) || IS_QLA2200(ha)) | |
2059 | ret = request_irq(host->irq, qla2100_intr_handler, | |
2060 | SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha); | |
2061 | else | |
2062 | ret = request_irq(host->irq, qla2300_intr_handler, | |
2063 | SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha); | |
2064 | if (ret != 0) { | |
2065 | qla_printk(KERN_WARNING, ha, | |
2066 | "Failed to reserve interrupt %d already in use.\n", | |
2067 | host->irq); | |
2068 | goto probe_failed; | |
2069 | } | |
2070 | ||
2071 | /* Initialized the timer */ | |
2072 | qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL); | |
2073 | ||
2074 | DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n", | |
2075 | ha->host_no, ha)); | |
2076 | ||
2077 | reg = ha->iobase; | |
2078 | ||
2079 | /* Disable ISP interrupts. */ | |
2080 | qla2x00_disable_intrs(ha); | |
2081 | ||
2082 | /* Ensure mailbox registers are free. */ | |
2083 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
2084 | WRT_REG_WORD(®->semaphore, 0); | |
2085 | WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); | |
2086 | WRT_REG_WORD(®->hccr, HCCR_CLR_HOST_INT); | |
2087 | ||
2088 | /* Enable proper parity */ | |
2089 | if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) { | |
2090 | if (IS_QLA2300(ha)) | |
2091 | /* SRAM parity */ | |
2092 | WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x1)); | |
2093 | else | |
2094 | /* SRAM, Instruction RAM and GP RAM parity */ | |
2095 | WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x7)); | |
2096 | } | |
2097 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
2098 | ||
2099 | /* Enable chip interrupts. */ | |
2100 | qla2x00_enable_intrs(ha); | |
2101 | ||
2102 | /* v2.19.5b6 */ | |
2103 | /* | |
2104 | * Wait around max loop_reset_delay secs for the devices to come | |
2105 | * on-line. We don't want Linux scanning before we are ready. | |
2106 | * | |
2107 | */ | |
2108 | for (wait_switch = jiffies + (ha->loop_reset_delay * HZ); | |
2109 | time_before(jiffies,wait_switch) && | |
2110 | !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES)) | |
2111 | && (ha->device_flags & SWITCH_FOUND) ;) { | |
2112 | ||
2113 | qla2x00_check_fabric_devices(ha); | |
2114 | ||
2115 | msleep(10); | |
2116 | } | |
2117 | ||
2118 | pci_set_drvdata(pdev, ha); | |
2119 | ha->flags.init_done = 1; | |
2120 | num_hosts++; | |
2121 | ||
2122 | /* List the target we have found */ | |
2123 | if (displayConfig) { | |
2124 | qla2x00_display_fc_names(ha); | |
2125 | } | |
2126 | ||
2127 | if (scsi_add_host(host, &pdev->dev)) | |
2128 | goto probe_failed; | |
2129 | ||
2130 | sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr); | |
2131 | sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr); | |
2132 | ||
2133 | qla_printk(KERN_INFO, ha, "\n" | |
2134 | " QLogic Fibre Channel HBA Driver: %s\n" | |
2135 | " QLogic %s - %s\n" | |
2136 | " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str, | |
2137 | ha->model_number, ha->model_desc ? ha->model_desc: "", | |
2138 | ha->brd_info->isp_name, qla2x00_get_pci_info_str(ha, pci_info), | |
2139 | pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-', | |
2140 | ha->host_no, qla2x00_get_fw_version_str(ha, fw_str)); | |
2141 | ||
2142 | if (ql2xdoinitscan) | |
2143 | scsi_scan_host(host); | |
2144 | ||
2145 | return 0; | |
2146 | ||
2147 | probe_failed: | |
2148 | qla2x00_free_device(ha); | |
2149 | ||
2150 | scsi_host_put(host); | |
2151 | ||
2152 | probe_disable_device: | |
2153 | pci_disable_device(pdev); | |
2154 | ||
2155 | return -1; | |
2156 | } | |
2157 | EXPORT_SYMBOL_GPL(qla2x00_probe_one); | |
2158 | ||
2159 | void qla2x00_remove_one(struct pci_dev *pdev) | |
2160 | { | |
2161 | scsi_qla_host_t *ha; | |
2162 | ||
2163 | ha = pci_get_drvdata(pdev); | |
2164 | ||
2165 | sysfs_remove_bin_file(&ha->host->shost_gendev.kobj, | |
2166 | &sysfs_fw_dump_attr); | |
2167 | sysfs_remove_bin_file(&ha->host->shost_gendev.kobj, &sysfs_nvram_attr); | |
2168 | ||
2169 | scsi_remove_host(ha->host); | |
2170 | ||
2171 | qla2x00_free_device(ha); | |
2172 | ||
2173 | scsi_host_put(ha->host); | |
2174 | ||
2175 | pci_set_drvdata(pdev, NULL); | |
2176 | } | |
2177 | EXPORT_SYMBOL_GPL(qla2x00_remove_one); | |
2178 | ||
2179 | static void | |
2180 | qla2x00_free_device(scsi_qla_host_t *ha) | |
2181 | { | |
2182 | int ret; | |
2183 | ||
2184 | /* Abort any outstanding IO descriptors. */ | |
2185 | if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) | |
2186 | qla2x00_cancel_io_descriptors(ha); | |
2187 | ||
2188 | /* turn-off interrupts on the card */ | |
2189 | if (ha->interrupts_on) | |
2190 | qla2x00_disable_intrs(ha); | |
2191 | ||
2192 | /* Disable timer */ | |
2193 | if (ha->timer_active) | |
2194 | qla2x00_stop_timer(ha); | |
2195 | ||
2196 | /* Kill the kernel thread for this host */ | |
2197 | if (ha->dpc_pid >= 0) { | |
2198 | ha->dpc_should_die = 1; | |
2199 | wmb(); | |
2200 | ret = kill_proc(ha->dpc_pid, SIGHUP, 1); | |
2201 | if (ret) { | |
2202 | qla_printk(KERN_ERR, ha, | |
2203 | "Unable to signal DPC thread -- (%d)\n", ret); | |
2204 | ||
2205 | /* TODO: SOMETHING MORE??? */ | |
2206 | } else { | |
2207 | wait_for_completion(&ha->dpc_exited); | |
2208 | } | |
2209 | } | |
2210 | ||
2211 | qla2x00_mem_free(ha); | |
2212 | ||
2213 | ||
2214 | ha->flags.online = 0; | |
2215 | ||
2216 | /* Detach interrupts */ | |
2217 | if (ha->pdev->irq) | |
2218 | free_irq(ha->pdev->irq, ha); | |
2219 | ||
2220 | /* release io space registers */ | |
2221 | if (ha->iobase) | |
2222 | iounmap(ha->iobase); | |
2223 | pci_release_regions(ha->pdev); | |
2224 | ||
2225 | pci_disable_device(ha->pdev); | |
2226 | } | |
2227 | ||
2228 | ||
2229 | /* | |
2230 | * The following support functions are adopted to handle | |
2231 | * the re-entrant qla2x00_proc_info correctly. | |
2232 | */ | |
2233 | static void | |
2234 | copy_mem_info(struct info_str *info, char *data, int len) | |
2235 | { | |
2236 | if (info->pos + len > info->offset + info->length) | |
2237 | len = info->offset + info->length - info->pos; | |
2238 | ||
2239 | if (info->pos + len < info->offset) { | |
2240 | info->pos += len; | |
2241 | return; | |
2242 | } | |
2243 | ||
2244 | if (info->pos < info->offset) { | |
2245 | off_t partial; | |
2246 | ||
2247 | partial = info->offset - info->pos; | |
2248 | data += partial; | |
2249 | info->pos += partial; | |
2250 | len -= partial; | |
2251 | } | |
2252 | ||
2253 | if (len > 0) { | |
2254 | memcpy(info->buffer, data, len); | |
2255 | info->pos += len; | |
2256 | info->buffer += len; | |
2257 | } | |
2258 | } | |
2259 | ||
2260 | static int | |
2261 | copy_info(struct info_str *info, char *fmt, ...) | |
2262 | { | |
2263 | va_list args; | |
2264 | char buf[256]; | |
2265 | int len; | |
2266 | ||
2267 | va_start(args, fmt); | |
2268 | len = vsprintf(buf, fmt, args); | |
2269 | va_end(args); | |
2270 | ||
2271 | copy_mem_info(info, buf, len); | |
2272 | ||
2273 | return (len); | |
2274 | } | |
2275 | ||
2276 | /************************************************************************* | |
2277 | * qla2x00_proc_info | |
2278 | * | |
2279 | * Description: | |
2280 | * Return information to handle /proc support for the driver. | |
2281 | * | |
2282 | * inout : decides the direction of the dataflow and the meaning of the | |
2283 | * variables | |
2284 | * buffer: If inout==0 data is being written to it else read from it | |
2285 | * (ptr to a page buffer) | |
2286 | * *start: If inout==0 start of the valid data in the buffer | |
2287 | * offset: If inout==0 starting offset from the beginning of all | |
2288 | * possible data to return. | |
2289 | * length: If inout==0 max number of bytes to be written into the buffer | |
2290 | * else number of bytes in "buffer" | |
2291 | * Returns: | |
2292 | * < 0: error. errno value. | |
2293 | * >= 0: sizeof data returned. | |
2294 | *************************************************************************/ | |
2295 | int | |
2296 | qla2x00_proc_info(struct Scsi_Host *shost, char *buffer, | |
2297 | char **start, off_t offset, int length, int inout) | |
2298 | { | |
2299 | struct info_str info; | |
2300 | int retval = -EINVAL; | |
2301 | os_lun_t *up; | |
2302 | os_tgt_t *tq; | |
2303 | unsigned int t, l; | |
2304 | uint32_t tmp_sn; | |
2305 | uint32_t *flags; | |
2306 | uint8_t *loop_state; | |
2307 | scsi_qla_host_t *ha; | |
2308 | char fw_info[30]; | |
2309 | ||
2310 | DEBUG3(printk(KERN_INFO | |
2311 | "Entering proc_info buff_in=%p, offset=0x%lx, length=0x%x\n", | |
2312 | buffer, offset, length);) | |
2313 | ||
2314 | ha = (scsi_qla_host_t *) shost->hostdata; | |
2315 | ||
2316 | if (inout) { | |
2317 | /* Has data been written to the file? */ | |
2318 | DEBUG3(printk( | |
2319 | "%s: has data been written to the file. \n", | |
2320 | __func__);) | |
2321 | ||
2322 | return -ENOSYS; | |
2323 | } | |
2324 | ||
2325 | if (start) { | |
2326 | *start = buffer; | |
2327 | } | |
2328 | ||
2329 | info.buffer = buffer; | |
2330 | info.length = length; | |
2331 | info.offset = offset; | |
2332 | info.pos = 0; | |
2333 | ||
2334 | /* start building the print buffer */ | |
2335 | copy_info(&info, | |
2336 | "QLogic PCI to Fibre Channel Host Adapter for %s:\n" | |
2337 | " Firmware version %s, ", | |
2338 | ha->model_number, qla2x00_get_fw_version_str(ha, fw_info)); | |
2339 | ||
2340 | copy_info(&info, "Driver version %s\n", qla2x00_version_str); | |
2341 | ||
2342 | tmp_sn = ((ha->serial0 & 0x1f) << 16) | (ha->serial2 << 8) | | |
2343 | ha->serial1; | |
2344 | copy_info(&info, "ISP: %s, Serial# %c%05d\n", | |
2345 | ha->brd_info->isp_name, ('A' + tmp_sn/100000), (tmp_sn%100000)); | |
2346 | ||
2347 | copy_info(&info, | |
2348 | "Request Queue = 0x%llx, Response Queue = 0x%llx\n", | |
2349 | (unsigned long long)ha->request_dma, | |
2350 | (unsigned long long)ha->response_dma); | |
2351 | ||
2352 | copy_info(&info, | |
2353 | "Request Queue count = %d, Response Queue count = %d\n", | |
2354 | ha->request_q_length, ha->response_q_length); | |
2355 | ||
2356 | copy_info(&info, | |
2357 | "Total number of active commands = %ld\n", | |
2358 | ha->actthreads); | |
2359 | ||
2360 | copy_info(&info, | |
2361 | "Total number of interrupts = %ld\n", | |
2362 | (long)ha->total_isr_cnt); | |
2363 | ||
2364 | copy_info(&info, | |
2365 | " Device queue depth = 0x%x\n", | |
2366 | (ql2xmaxqdepth == 0) ? 16 : ql2xmaxqdepth); | |
2367 | ||
2368 | copy_info(&info, | |
2369 | "Number of free request entries = %d\n", ha->req_q_cnt); | |
2370 | ||
2371 | copy_info(&info, | |
2372 | "Number of mailbox timeouts = %ld\n", ha->total_mbx_timeout); | |
2373 | ||
2374 | copy_info(&info, | |
2375 | "Number of ISP aborts = %ld\n", ha->total_isp_aborts); | |
2376 | ||
2377 | copy_info(&info, | |
2378 | "Number of loop resyncs = %ld\n", ha->total_loop_resync); | |
2379 | ||
2380 | copy_info(&info, | |
2381 | "Number of retries for empty slots = %ld\n", | |
2382 | qla2x00_stats.outarray_full); | |
2383 | ||
2384 | copy_info(&info, | |
2385 | "Number of reqs in pending_q= %ld, retry_q= %d, " | |
2386 | "done_q= %ld, scsi_retry_q= %d\n", | |
2387 | ha->qthreads, ha->retry_q_cnt, | |
2388 | ha->done_q_cnt, ha->scsi_retry_q_cnt); | |
2389 | ||
2390 | ||
2391 | flags = (uint32_t *) &ha->flags; | |
2392 | ||
2393 | if (atomic_read(&ha->loop_state) == LOOP_DOWN) { | |
2394 | loop_state = "DOWN"; | |
2395 | } else if (atomic_read(&ha->loop_state) == LOOP_UP) { | |
2396 | loop_state = "UP"; | |
2397 | } else if (atomic_read(&ha->loop_state) == LOOP_READY) { | |
2398 | loop_state = "READY"; | |
2399 | } else if (atomic_read(&ha->loop_state) == LOOP_TIMEOUT) { | |
2400 | loop_state = "TIMEOUT"; | |
2401 | } else if (atomic_read(&ha->loop_state) == LOOP_UPDATE) { | |
2402 | loop_state = "UPDATE"; | |
2403 | } else { | |
2404 | loop_state = "UNKNOWN"; | |
2405 | } | |
2406 | ||
2407 | copy_info(&info, | |
2408 | "Host adapter:loop state = <%s>, flags = 0x%lx\n", | |
2409 | loop_state , *flags); | |
2410 | ||
2411 | copy_info(&info, "Dpc flags = 0x%lx\n", ha->dpc_flags); | |
2412 | ||
2413 | copy_info(&info, "MBX flags = 0x%x\n", ha->mbx_flags); | |
2414 | ||
2415 | copy_info(&info, "Link down Timeout = %3.3d\n", | |
2416 | ha->link_down_timeout); | |
2417 | ||
2418 | copy_info(&info, "Port down retry = %3.3d\n", | |
2419 | ha->port_down_retry_count); | |
2420 | ||
2421 | copy_info(&info, "Login retry count = %3.3d\n", | |
2422 | ha->login_retry_count); | |
2423 | ||
2424 | copy_info(&info, | |
2425 | "Commands retried with dropped frame(s) = %d\n", | |
2426 | ha->dropped_frame_error_cnt); | |
2427 | ||
2428 | copy_info(&info, | |
2429 | "Product ID = %04x %04x %04x %04x\n", ha->product_id[0], | |
2430 | ha->product_id[1], ha->product_id[2], ha->product_id[3]); | |
2431 | ||
2432 | copy_info(&info, "\n"); | |
2433 | ||
2434 | /* 2.25 node/port display to proc */ | |
2435 | /* Display the node name for adapter */ | |
2436 | copy_info(&info, "\nSCSI Device Information:\n"); | |
2437 | copy_info(&info, | |
2438 | "scsi-qla%d-adapter-node=" | |
2439 | "%02x%02x%02x%02x%02x%02x%02x%02x;\n", | |
2440 | (int)ha->instance, | |
2441 | ha->init_cb->node_name[0], | |
2442 | ha->init_cb->node_name[1], | |
2443 | ha->init_cb->node_name[2], | |
2444 | ha->init_cb->node_name[3], | |
2445 | ha->init_cb->node_name[4], | |
2446 | ha->init_cb->node_name[5], | |
2447 | ha->init_cb->node_name[6], | |
2448 | ha->init_cb->node_name[7]); | |
2449 | ||
2450 | /* display the port name for adapter */ | |
2451 | copy_info(&info, | |
2452 | "scsi-qla%d-adapter-port=" | |
2453 | "%02x%02x%02x%02x%02x%02x%02x%02x;\n", | |
2454 | (int)ha->instance, | |
2455 | ha->init_cb->port_name[0], | |
2456 | ha->init_cb->port_name[1], | |
2457 | ha->init_cb->port_name[2], | |
2458 | ha->init_cb->port_name[3], | |
2459 | ha->init_cb->port_name[4], | |
2460 | ha->init_cb->port_name[5], | |
2461 | ha->init_cb->port_name[6], | |
2462 | ha->init_cb->port_name[7]); | |
2463 | ||
2464 | /* Print out device port names */ | |
2465 | for (t = 0; t < MAX_FIBRE_DEVICES; t++) { | |
2466 | if ((tq = TGT_Q(ha, t)) == NULL) | |
2467 | continue; | |
2468 | ||
2469 | copy_info(&info, | |
2470 | "scsi-qla%d-target-%d=" | |
2471 | "%02x%02x%02x%02x%02x%02x%02x%02x;\n", | |
2472 | (int)ha->instance, t, | |
2473 | tq->port_name[0], tq->port_name[1], | |
2474 | tq->port_name[2], tq->port_name[3], | |
2475 | tq->port_name[4], tq->port_name[5], | |
2476 | tq->port_name[6], tq->port_name[7]); | |
2477 | } | |
2478 | ||
2479 | copy_info(&info, "\nSCSI LUN Information:\n"); | |
2480 | copy_info(&info, | |
2481 | "(Id:Lun) * - indicates lun is not registered with the OS.\n"); | |
2482 | ||
2483 | /* scan for all equipment stats */ | |
2484 | for (t = 0; t < MAX_FIBRE_DEVICES; t++) { | |
2485 | /* scan all luns */ | |
2486 | for (l = 0; l < ha->max_luns; l++) { | |
2487 | up = (os_lun_t *) GET_LU_Q(ha, t, l); | |
2488 | ||
2489 | if (up == NULL) { | |
2490 | continue; | |
2491 | } | |
2492 | if (up->fclun == NULL) { | |
2493 | continue; | |
2494 | } | |
2495 | ||
2496 | copy_info(&info, | |
2497 | "(%2d:%2d): Total reqs %ld,", | |
2498 | t,l,up->io_cnt); | |
2499 | ||
2500 | copy_info(&info, | |
2501 | " Pending reqs %ld,", | |
2502 | up->out_cnt); | |
2503 | ||
2504 | if (up->io_cnt < 4) { | |
2505 | copy_info(&info, | |
2506 | " flags 0x%x*,", | |
2507 | (int)up->q_flag); | |
2508 | } else { | |
2509 | copy_info(&info, | |
2510 | " flags 0x%x,", | |
2511 | (int)up->q_flag); | |
2512 | } | |
2513 | ||
2514 | copy_info(&info, | |
2515 | " %ld:%d:%02x %02x", | |
2516 | up->fclun->fcport->ha->instance, | |
2517 | up->fclun->fcport->cur_path, | |
2518 | up->fclun->fcport->loop_id, | |
2519 | up->fclun->device_type); | |
2520 | ||
2521 | copy_info(&info, "\n"); | |
2522 | ||
2523 | if (info.pos >= info.offset + info.length) { | |
2524 | /* No need to continue */ | |
2525 | goto profile_stop; | |
2526 | } | |
2527 | } | |
2528 | ||
2529 | if (info.pos >= info.offset + info.length) { | |
2530 | /* No need to continue */ | |
2531 | break; | |
2532 | } | |
2533 | } | |
2534 | ||
2535 | profile_stop: | |
2536 | ||
2537 | retval = info.pos > info.offset ? info.pos - info.offset : 0; | |
2538 | ||
2539 | DEBUG3(printk(KERN_INFO | |
2540 | "Exiting proc_info: info.pos=%d, offset=0x%lx, " | |
2541 | "length=0x%x\n", info.pos, offset, length);) | |
2542 | ||
2543 | return (retval); | |
2544 | } | |
2545 | ||
2546 | /* | |
2547 | * qla2x00_display_fc_names | |
2548 | * This routine will the node names of the different devices found | |
2549 | * after port inquiry. | |
2550 | * | |
2551 | * Input: | |
2552 | * cmd = SCSI command structure | |
2553 | * | |
2554 | * Returns: | |
2555 | * None. | |
2556 | */ | |
2557 | static void | |
2558 | qla2x00_display_fc_names(scsi_qla_host_t *ha) | |
2559 | { | |
2560 | uint16_t tgt; | |
2561 | os_tgt_t *tq; | |
2562 | ||
2563 | /* Display the node name for adapter */ | |
2564 | qla_printk(KERN_INFO, ha, | |
2565 | "scsi-qla%d-adapter-node=%02x%02x%02x%02x%02x%02x%02x%02x\\;\n", | |
2566 | (int)ha->instance, | |
2567 | ha->init_cb->node_name[0], | |
2568 | ha->init_cb->node_name[1], | |
2569 | ha->init_cb->node_name[2], | |
2570 | ha->init_cb->node_name[3], | |
2571 | ha->init_cb->node_name[4], | |
2572 | ha->init_cb->node_name[5], | |
2573 | ha->init_cb->node_name[6], | |
2574 | ha->init_cb->node_name[7]); | |
2575 | ||
2576 | /* display the port name for adapter */ | |
2577 | qla_printk(KERN_INFO, ha, | |
2578 | "scsi-qla%d-adapter-port=%02x%02x%02x%02x%02x%02x%02x%02x\\;\n", | |
2579 | (int)ha->instance, | |
2580 | ha->init_cb->port_name[0], | |
2581 | ha->init_cb->port_name[1], | |
2582 | ha->init_cb->port_name[2], | |
2583 | ha->init_cb->port_name[3], | |
2584 | ha->init_cb->port_name[4], | |
2585 | ha->init_cb->port_name[5], | |
2586 | ha->init_cb->port_name[6], | |
2587 | ha->init_cb->port_name[7]); | |
2588 | ||
2589 | /* Print out device port names */ | |
2590 | for (tgt = 0; tgt < MAX_TARGETS; tgt++) { | |
2591 | if ((tq = ha->otgt[tgt]) == NULL) | |
2592 | continue; | |
2593 | ||
2594 | if (tq->fcport == NULL) | |
2595 | continue; | |
2596 | ||
2597 | switch (ha->binding_type) { | |
2598 | case BIND_BY_PORT_NAME: | |
2599 | qla_printk(KERN_INFO, ha, | |
2600 | "scsi-qla%d-tgt-%d-di-0-port=" | |
2601 | "%02x%02x%02x%02x%02x%02x%02x%02x\\;\n", | |
2602 | (int)ha->instance, | |
2603 | tgt, | |
2604 | tq->port_name[0], | |
2605 | tq->port_name[1], | |
2606 | tq->port_name[2], | |
2607 | tq->port_name[3], | |
2608 | tq->port_name[4], | |
2609 | tq->port_name[5], | |
2610 | tq->port_name[6], | |
2611 | tq->port_name[7]); | |
2612 | ||
2613 | break; | |
2614 | ||
2615 | case BIND_BY_PORT_ID: | |
2616 | qla_printk(KERN_INFO, ha, | |
2617 | "scsi-qla%d-tgt-%d-di-0-pid=" | |
2618 | "%02x%02x%02x\\;\n", | |
2619 | (int)ha->instance, | |
2620 | tgt, | |
2621 | tq->d_id.b.domain, | |
2622 | tq->d_id.b.area, | |
2623 | tq->d_id.b.al_pa); | |
2624 | break; | |
2625 | } | |
2626 | ||
2627 | #if VSA | |
2628 | qla_printk(KERN_INFO, ha, | |
2629 | "scsi-qla%d-target-%d-vsa=01;\n", (int)ha->instance, tgt); | |
2630 | #endif | |
2631 | } | |
2632 | } | |
2633 | ||
2634 | /* | |
2635 | * qla2x00_suspend_lun | |
2636 | * Suspend lun and start port down timer | |
2637 | * | |
2638 | * Input: | |
2639 | * ha = visable adapter block pointer. | |
2640 | * lq = lun queue | |
2641 | * cp = Scsi command pointer | |
2642 | * time = time in seconds | |
2643 | * count = number of times to let time expire | |
2644 | * delay_lun = non-zero, if lun should be delayed rather than suspended | |
2645 | * | |
2646 | * Return: | |
2647 | * QLA_SUCCESS -- suspended lun | |
2648 | * QLA_FUNCTION_FAILED -- Didn't suspend lun | |
2649 | * | |
2650 | * Context: | |
2651 | * Interrupt context. | |
2652 | */ | |
2653 | int | |
2654 | __qla2x00_suspend_lun(scsi_qla_host_t *ha, | |
2655 | os_lun_t *lq, int time, int count, int delay_lun) | |
2656 | { | |
2657 | int rval; | |
2658 | srb_t *sp; | |
2659 | struct list_head *list, *temp; | |
2660 | unsigned long flags; | |
2661 | ||
2662 | rval = QLA_SUCCESS; | |
2663 | ||
2664 | /* if the lun_q is already suspended then don't do it again */ | |
2665 | if (lq->q_state == LUN_STATE_READY ||lq->q_state == LUN_STATE_RUN) { | |
2666 | ||
2667 | spin_lock_irqsave(&lq->q_lock, flags); | |
2668 | if (lq->q_state == LUN_STATE_READY) { | |
2669 | lq->q_max = count; | |
2670 | lq->q_count = 0; | |
2671 | } | |
2672 | /* Set the suspend time usually 6 secs */ | |
2673 | atomic_set(&lq->q_timer, time); | |
2674 | ||
2675 | /* now suspend the lun */ | |
2676 | lq->q_state = LUN_STATE_WAIT; | |
2677 | ||
2678 | if (delay_lun) { | |
2679 | set_bit(LUN_EXEC_DELAYED, &lq->q_flag); | |
2680 | DEBUG(printk(KERN_INFO | |
2681 | "scsi(%ld): Delay lun execution for %d secs, " | |
2682 | "count=%d, max count=%d, state=%d\n", | |
2683 | ha->host_no, | |
2684 | time, | |
2685 | lq->q_count, lq->q_max, lq->q_state)); | |
2686 | } else { | |
2687 | DEBUG(printk(KERN_INFO | |
2688 | "scsi(%ld): Suspend lun for %d secs, count=%d, " | |
2689 | "max count=%d, state=%d\n", | |
2690 | ha->host_no, | |
2691 | time, | |
2692 | lq->q_count, lq->q_max, lq->q_state)); | |
2693 | } | |
2694 | spin_unlock_irqrestore(&lq->q_lock, flags); | |
2695 | ||
2696 | /* | |
2697 | * Remove all pending commands from request queue and put them | |
2698 | * in the scsi_retry queue. | |
2699 | */ | |
2700 | spin_lock_irqsave(&ha->list_lock, flags); | |
2701 | list_for_each_safe(list, temp, &ha->pending_queue) { | |
2702 | sp = list_entry(list, srb_t, list); | |
2703 | if (sp->lun_queue != lq) | |
2704 | continue; | |
2705 | ||
2706 | __del_from_pending_queue(ha, sp); | |
2707 | ||
2708 | if (sp->cmd->allowed < count) | |
2709 | sp->cmd->allowed = count; | |
2710 | __add_to_scsi_retry_queue(ha, sp); | |
2711 | ||
2712 | } /* list_for_each_safe */ | |
2713 | spin_unlock_irqrestore(&ha->list_lock, flags); | |
2714 | rval = QLA_SUCCESS; | |
2715 | } else { | |
2716 | rval = QLA_FUNCTION_FAILED; | |
2717 | } | |
2718 | ||
2719 | return (rval); | |
2720 | } | |
2721 | ||
2722 | /* | |
2723 | * qla2x00_mark_device_lost Updates fcport state when device goes offline. | |
2724 | * | |
2725 | * Input: ha = adapter block pointer. fcport = port structure pointer. | |
2726 | * | |
2727 | * Return: None. | |
2728 | * | |
2729 | * Context: | |
2730 | */ | |
2731 | void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport, | |
2732 | int do_login) | |
2733 | { | |
2734 | /* | |
2735 | * We may need to retry the login, so don't change the state of the | |
2736 | * port but do the retries. | |
2737 | */ | |
2738 | if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD) | |
2739 | atomic_set(&fcport->state, FCS_DEVICE_LOST); | |
2740 | ||
2741 | if (!do_login) | |
2742 | return; | |
2743 | ||
2744 | if (fcport->login_retry == 0) { | |
2745 | fcport->login_retry = ha->login_retry_count; | |
2746 | set_bit(RELOGIN_NEEDED, &ha->dpc_flags); | |
2747 | ||
2748 | DEBUG(printk("scsi(%ld): Port login retry: " | |
2749 | "%02x%02x%02x%02x%02x%02x%02x%02x, " | |
2750 | "id = 0x%04x retry cnt=%d\n", | |
2751 | ha->host_no, | |
2752 | fcport->port_name[0], | |
2753 | fcport->port_name[1], | |
2754 | fcport->port_name[2], | |
2755 | fcport->port_name[3], | |
2756 | fcport->port_name[4], | |
2757 | fcport->port_name[5], | |
2758 | fcport->port_name[6], | |
2759 | fcport->port_name[7], | |
2760 | fcport->loop_id, | |
2761 | fcport->login_retry)); | |
2762 | } | |
2763 | } | |
2764 | ||
2765 | /* | |
2766 | * qla2x00_mark_all_devices_lost | |
2767 | * Updates fcport state when device goes offline. | |
2768 | * | |
2769 | * Input: | |
2770 | * ha = adapter block pointer. | |
2771 | * fcport = port structure pointer. | |
2772 | * | |
2773 | * Return: | |
2774 | * None. | |
2775 | * | |
2776 | * Context: | |
2777 | */ | |
2778 | void | |
2779 | qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha) | |
2780 | { | |
2781 | fc_port_t *fcport; | |
2782 | ||
2783 | list_for_each_entry(fcport, &ha->fcports, list) { | |
2784 | if (fcport->port_type != FCT_TARGET) | |
2785 | continue; | |
2786 | ||
2787 | /* | |
2788 | * No point in marking the device as lost, if the device is | |
2789 | * already DEAD. | |
2790 | */ | |
2791 | if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD) | |
2792 | continue; | |
2793 | ||
2794 | atomic_set(&fcport->state, FCS_DEVICE_LOST); | |
2795 | } | |
2796 | } | |
2797 | ||
2798 | /* | |
2799 | * qla2x00_mem_alloc | |
2800 | * Allocates adapter memory. | |
2801 | * | |
2802 | * Returns: | |
2803 | * 0 = success. | |
2804 | * 1 = failure. | |
2805 | */ | |
2806 | static uint8_t | |
2807 | qla2x00_mem_alloc(scsi_qla_host_t *ha) | |
2808 | { | |
2809 | char name[16]; | |
2810 | uint8_t status = 1; | |
2811 | int retry= 10; | |
2812 | ||
2813 | do { | |
2814 | /* | |
2815 | * This will loop only once if everything goes well, else some | |
2816 | * number of retries will be performed to get around a kernel | |
2817 | * bug where available mem is not allocated until after a | |
2818 | * little delay and a retry. | |
2819 | */ | |
2820 | ha->request_ring = dma_alloc_coherent(&ha->pdev->dev, | |
2821 | (ha->request_q_length + 1) * sizeof(request_t), | |
2822 | &ha->request_dma, GFP_KERNEL); | |
2823 | if (ha->request_ring == NULL) { | |
2824 | qla_printk(KERN_WARNING, ha, | |
2825 | "Memory Allocation failed - request_ring\n"); | |
2826 | ||
2827 | qla2x00_mem_free(ha); | |
2828 | msleep(100); | |
2829 | ||
2830 | continue; | |
2831 | } | |
2832 | ||
2833 | ha->response_ring = dma_alloc_coherent(&ha->pdev->dev, | |
2834 | (ha->response_q_length + 1) * sizeof(response_t), | |
2835 | &ha->response_dma, GFP_KERNEL); | |
2836 | if (ha->response_ring == NULL) { | |
2837 | qla_printk(KERN_WARNING, ha, | |
2838 | "Memory Allocation failed - response_ring\n"); | |
2839 | ||
2840 | qla2x00_mem_free(ha); | |
2841 | msleep(100); | |
2842 | ||
2843 | continue; | |
2844 | } | |
2845 | ||
2846 | ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE, | |
2847 | &ha->gid_list_dma, GFP_KERNEL); | |
2848 | if (ha->gid_list == NULL) { | |
2849 | qla_printk(KERN_WARNING, ha, | |
2850 | "Memory Allocation failed - gid_list\n"); | |
2851 | ||
2852 | qla2x00_mem_free(ha); | |
2853 | msleep(100); | |
2854 | ||
2855 | continue; | |
2856 | } | |
2857 | ||
2858 | ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev, | |
2859 | sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL); | |
2860 | if (ha->rlc_rsp == NULL) { | |
2861 | qla_printk(KERN_WARNING, ha, | |
2862 | "Memory Allocation failed - rlc"); | |
2863 | ||
2864 | qla2x00_mem_free(ha); | |
2865 | msleep(100); | |
2866 | ||
2867 | continue; | |
2868 | } | |
2869 | ||
2870 | snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no); | |
2871 | ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev, | |
2872 | DMA_POOL_SIZE, 8, 0); | |
2873 | if (ha->s_dma_pool == NULL) { | |
2874 | qla_printk(KERN_WARNING, ha, | |
2875 | "Memory Allocation failed - s_dma_pool\n"); | |
2876 | ||
2877 | qla2x00_mem_free(ha); | |
2878 | msleep(100); | |
2879 | ||
2880 | continue; | |
2881 | } | |
2882 | ||
2883 | /* get consistent memory allocated for init control block */ | |
2884 | ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, | |
2885 | &ha->init_cb_dma); | |
2886 | if (ha->init_cb == NULL) { | |
2887 | qla_printk(KERN_WARNING, ha, | |
2888 | "Memory Allocation failed - init_cb\n"); | |
2889 | ||
2890 | qla2x00_mem_free(ha); | |
2891 | msleep(100); | |
2892 | ||
2893 | continue; | |
2894 | } | |
2895 | memset(ha->init_cb, 0, sizeof(init_cb_t)); | |
2896 | ||
2897 | /* Get consistent memory allocated for Get Port Database cmd */ | |
2898 | ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, | |
2899 | &ha->iodesc_pd_dma); | |
2900 | if (ha->iodesc_pd == NULL) { | |
2901 | /* error */ | |
2902 | qla_printk(KERN_WARNING, ha, | |
2903 | "Memory Allocation failed - iodesc_pd\n"); | |
2904 | ||
2905 | qla2x00_mem_free(ha); | |
2906 | msleep(100); | |
2907 | ||
2908 | continue; | |
2909 | } | |
2910 | memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE); | |
2911 | ||
2912 | /* Allocate ioctl related memory. */ | |
2913 | if (qla2x00_alloc_ioctl_mem(ha)) { | |
2914 | qla_printk(KERN_WARNING, ha, | |
2915 | "Memory Allocation failed - ioctl_mem\n"); | |
2916 | ||
2917 | qla2x00_mem_free(ha); | |
2918 | msleep(100); | |
2919 | ||
2920 | continue; | |
2921 | } | |
2922 | ||
2923 | if (qla2x00_allocate_sp_pool(ha)) { | |
2924 | qla_printk(KERN_WARNING, ha, | |
2925 | "Memory Allocation failed - " | |
2926 | "qla2x00_allocate_sp_pool()\n"); | |
2927 | ||
2928 | qla2x00_mem_free(ha); | |
2929 | msleep(100); | |
2930 | ||
2931 | continue; | |
2932 | } | |
2933 | ||
2934 | /* Allocate memory for SNS commands */ | |
2935 | if (IS_QLA2100(ha) || IS_QLA2200(ha)) { | |
2936 | /* Get consistent memory allocated for SNS commands */ | |
2937 | ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev, | |
2938 | sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma, | |
2939 | GFP_KERNEL); | |
2940 | if (ha->sns_cmd == NULL) { | |
2941 | /* error */ | |
2942 | qla_printk(KERN_WARNING, ha, | |
2943 | "Memory Allocation failed - sns_cmd\n"); | |
2944 | ||
2945 | qla2x00_mem_free(ha); | |
2946 | msleep(100); | |
2947 | ||
2948 | continue; | |
2949 | } | |
2950 | memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt)); | |
2951 | } else { | |
2952 | /* Get consistent memory allocated for MS IOCB */ | |
2953 | ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, | |
2954 | &ha->ms_iocb_dma); | |
2955 | if (ha->ms_iocb == NULL) { | |
2956 | /* error */ | |
2957 | qla_printk(KERN_WARNING, ha, | |
2958 | "Memory Allocation failed - ms_iocb\n"); | |
2959 | ||
2960 | qla2x00_mem_free(ha); | |
2961 | msleep(100); | |
2962 | ||
2963 | continue; | |
2964 | } | |
2965 | memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t)); | |
2966 | ||
2967 | /* | |
2968 | * Get consistent memory allocated for CT SNS | |
2969 | * commands | |
2970 | */ | |
2971 | ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev, | |
2972 | sizeof(struct ct_sns_pkt), &ha->ct_sns_dma, | |
2973 | GFP_KERNEL); | |
2974 | if (ha->ct_sns == NULL) { | |
2975 | /* error */ | |
2976 | qla_printk(KERN_WARNING, ha, | |
2977 | "Memory Allocation failed - ct_sns\n"); | |
2978 | ||
2979 | qla2x00_mem_free(ha); | |
2980 | msleep(100); | |
2981 | ||
2982 | continue; | |
2983 | } | |
2984 | memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt)); | |
2985 | } | |
2986 | ||
2987 | /* Done all allocations without any error. */ | |
2988 | status = 0; | |
2989 | ||
2990 | } while (retry-- && status != 0); | |
2991 | ||
2992 | if (status) { | |
2993 | printk(KERN_WARNING | |
2994 | "%s(): **** FAILED ****\n", __func__); | |
2995 | } | |
2996 | ||
2997 | return(status); | |
2998 | } | |
2999 | ||
3000 | /* | |
3001 | * qla2x00_mem_free | |
3002 | * Frees all adapter allocated memory. | |
3003 | * | |
3004 | * Input: | |
3005 | * ha = adapter block pointer. | |
3006 | */ | |
3007 | static void | |
3008 | qla2x00_mem_free(scsi_qla_host_t *ha) | |
3009 | { | |
3010 | uint32_t t; | |
3011 | struct list_head *fcpl, *fcptemp; | |
3012 | fc_port_t *fcport; | |
3013 | struct list_head *fcll, *fcltemp; | |
3014 | fc_lun_t *fclun; | |
3015 | unsigned long wtime;/* max wait time if mbx cmd is busy. */ | |
3016 | ||
3017 | if (ha == NULL) { | |
3018 | /* error */ | |
3019 | DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__)); | |
3020 | return; | |
3021 | } | |
3022 | ||
3023 | /* Free the target queues */ | |
3024 | for (t = 0; t < MAX_TARGETS; t++) { | |
3025 | qla2x00_tgt_free(ha, t); | |
3026 | } | |
3027 | ||
3028 | /* Make sure all other threads are stopped. */ | |
3029 | wtime = 60 * HZ; | |
3030 | while (ha->dpc_wait && wtime) { | |
3031 | set_current_state(TASK_INTERRUPTIBLE); | |
3032 | wtime = schedule_timeout(wtime); | |
3033 | } | |
3034 | ||
3035 | /* free ioctl memory */ | |
3036 | qla2x00_free_ioctl_mem(ha); | |
3037 | ||
3038 | /* free sp pool */ | |
3039 | qla2x00_free_sp_pool(ha); | |
3040 | ||
3041 | if (ha->sns_cmd) | |
3042 | dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt), | |
3043 | ha->sns_cmd, ha->sns_cmd_dma); | |
3044 | ||
3045 | if (ha->ct_sns) | |
3046 | dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt), | |
3047 | ha->ct_sns, ha->ct_sns_dma); | |
3048 | ||
3049 | if (ha->ms_iocb) | |
3050 | dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma); | |
3051 | ||
3052 | if (ha->iodesc_pd) | |
3053 | dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma); | |
3054 | ||
3055 | if (ha->init_cb) | |
3056 | dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma); | |
3057 | ||
3058 | if (ha->s_dma_pool) | |
3059 | dma_pool_destroy(ha->s_dma_pool); | |
3060 | ||
3061 | if (ha->rlc_rsp) | |
3062 | dma_free_coherent(&ha->pdev->dev, | |
3063 | sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp, | |
3064 | ha->rlc_rsp_dma); | |
3065 | ||
3066 | if (ha->gid_list) | |
3067 | dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list, | |
3068 | ha->gid_list_dma); | |
3069 | ||
3070 | if (ha->response_ring) | |
3071 | dma_free_coherent(&ha->pdev->dev, | |
3072 | (ha->response_q_length + 1) * sizeof(response_t), | |
3073 | ha->response_ring, ha->response_dma); | |
3074 | ||
3075 | if (ha->request_ring) | |
3076 | dma_free_coherent(&ha->pdev->dev, | |
3077 | (ha->request_q_length + 1) * sizeof(request_t), | |
3078 | ha->request_ring, ha->request_dma); | |
3079 | ||
3080 | ha->sns_cmd = NULL; | |
3081 | ha->sns_cmd_dma = 0; | |
3082 | ha->ct_sns = NULL; | |
3083 | ha->ct_sns_dma = 0; | |
3084 | ha->ms_iocb = NULL; | |
3085 | ha->ms_iocb_dma = 0; | |
3086 | ha->iodesc_pd = NULL; | |
3087 | ha->iodesc_pd_dma = 0; | |
3088 | ha->init_cb = NULL; | |
3089 | ha->init_cb_dma = 0; | |
3090 | ||
3091 | ha->s_dma_pool = NULL; | |
3092 | ||
3093 | ha->rlc_rsp = NULL; | |
3094 | ha->rlc_rsp_dma = 0; | |
3095 | ha->gid_list = NULL; | |
3096 | ha->gid_list_dma = 0; | |
3097 | ||
3098 | ha->response_ring = NULL; | |
3099 | ha->response_dma = 0; | |
3100 | ha->request_ring = NULL; | |
3101 | ha->request_dma = 0; | |
3102 | ||
3103 | list_for_each_safe(fcpl, fcptemp, &ha->fcports) { | |
3104 | fcport = list_entry(fcpl, fc_port_t, list); | |
3105 | ||
3106 | /* fc luns */ | |
3107 | list_for_each_safe(fcll, fcltemp, &fcport->fcluns) { | |
3108 | fclun = list_entry(fcll, fc_lun_t, list); | |
3109 | ||
3110 | list_del_init(&fclun->list); | |
3111 | kfree(fclun); | |
3112 | } | |
3113 | ||
3114 | /* fc ports */ | |
3115 | list_del_init(&fcport->list); | |
3116 | kfree(fcport); | |
3117 | } | |
3118 | INIT_LIST_HEAD(&ha->fcports); | |
3119 | ||
3120 | if (ha->fw_dump) | |
3121 | free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order); | |
3122 | ||
3123 | if (ha->fw_dump_buffer) | |
3124 | vfree(ha->fw_dump_buffer); | |
3125 | ||
3126 | ha->fw_dump = NULL; | |
3127 | ha->fw_dump_reading = 0; | |
3128 | ha->fw_dump_buffer = NULL; | |
3129 | } | |
3130 | ||
3131 | /* | |
3132 | * qla2x00_allocate_sp_pool | |
3133 | * This routine is called during initialization to allocate | |
3134 | * memory for local srb_t. | |
3135 | * | |
3136 | * Input: | |
3137 | * ha = adapter block pointer. | |
3138 | * | |
3139 | * Context: | |
3140 | * Kernel context. | |
3141 | * | |
3142 | * Note: Sets the ref_count for non Null sp to one. | |
3143 | */ | |
3144 | static int | |
3145 | qla2x00_allocate_sp_pool(scsi_qla_host_t *ha) | |
3146 | { | |
3147 | int rval; | |
3148 | ||
3149 | rval = QLA_SUCCESS; | |
3150 | ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, | |
3151 | mempool_free_slab, srb_cachep); | |
3152 | if (ha->srb_mempool == NULL) { | |
3153 | qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n"); | |
3154 | rval = QLA_FUNCTION_FAILED; | |
3155 | } | |
3156 | return (rval); | |
3157 | } | |
3158 | ||
3159 | /* | |
3160 | * This routine frees all adapter allocated memory. | |
3161 | * | |
3162 | */ | |
3163 | static void | |
3164 | qla2x00_free_sp_pool( scsi_qla_host_t *ha) | |
3165 | { | |
3166 | if (ha->srb_mempool) { | |
3167 | mempool_destroy(ha->srb_mempool); | |
3168 | ha->srb_mempool = NULL; | |
3169 | } | |
3170 | } | |
3171 | ||
3172 | /************************************************************************** | |
3173 | * qla2x00_do_dpc | |
3174 | * This kernel thread is a task that is schedule by the interrupt handler | |
3175 | * to perform the background processing for interrupts. | |
3176 | * | |
3177 | * Notes: | |
3178 | * This task always run in the context of a kernel thread. It | |
3179 | * is kick-off by the driver's detect code and starts up | |
3180 | * up one per adapter. It immediately goes to sleep and waits for | |
3181 | * some fibre event. When either the interrupt handler or | |
3182 | * the timer routine detects a event it will one of the task | |
3183 | * bits then wake us up. | |
3184 | **************************************************************************/ | |
3185 | static int | |
3186 | qla2x00_do_dpc(void *data) | |
3187 | { | |
3188 | DECLARE_MUTEX_LOCKED(sem); | |
3189 | scsi_qla_host_t *ha; | |
3190 | fc_port_t *fcport; | |
3191 | os_lun_t *q; | |
3192 | srb_t *sp; | |
3193 | uint8_t status; | |
3194 | unsigned long flags = 0; | |
3195 | struct list_head *list, *templist; | |
3196 | int dead_cnt, online_cnt; | |
3197 | int retry_cmds = 0; | |
3198 | uint16_t next_loopid; | |
3199 | int t; | |
3200 | os_tgt_t *tq; | |
3201 | ||
3202 | ha = (scsi_qla_host_t *)data; | |
3203 | ||
3204 | lock_kernel(); | |
3205 | ||
3206 | daemonize("%s_dpc", ha->host_str); | |
3207 | allow_signal(SIGHUP); | |
3208 | ||
3209 | ha->dpc_wait = &sem; | |
3210 | ||
3211 | set_user_nice(current, -20); | |
3212 | ||
3213 | unlock_kernel(); | |
3214 | ||
3215 | complete(&ha->dpc_inited); | |
3216 | ||
3217 | while (1) { | |
3218 | DEBUG3(printk("qla2x00: DPC handler sleeping\n")); | |
3219 | ||
3220 | if (down_interruptible(&sem)) | |
3221 | break; | |
3222 | ||
3223 | if (ha->dpc_should_die) | |
3224 | break; | |
3225 | ||
3226 | DEBUG3(printk("qla2x00: DPC handler waking up\n")); | |
3227 | ||
3228 | /* Initialization not yet finished. Don't do anything yet. */ | |
3229 | if (!ha->flags.init_done || ha->dpc_active) | |
3230 | continue; | |
3231 | ||
3232 | DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no)); | |
3233 | ||
3234 | ha->dpc_active = 1; | |
3235 | ||
3236 | if (!list_empty(&ha->done_queue)) | |
3237 | qla2x00_done(ha); | |
3238 | ||
3239 | /* Process commands in retry queue */ | |
3240 | if (test_and_clear_bit(PORT_RESTART_NEEDED, &ha->dpc_flags)) { | |
3241 | DEBUG(printk("scsi(%ld): DPC checking retry_q. " | |
3242 | "total=%d\n", | |
3243 | ha->host_no, ha->retry_q_cnt)); | |
3244 | ||
3245 | spin_lock_irqsave(&ha->list_lock, flags); | |
3246 | dead_cnt = online_cnt = 0; | |
3247 | list_for_each_safe(list, templist, &ha->retry_queue) { | |
3248 | sp = list_entry(list, srb_t, list); | |
3249 | q = sp->lun_queue; | |
3250 | DEBUG3(printk("scsi(%ld): pid=%ld sp=%p, " | |
3251 | "spflags=0x%x, q_flag= 0x%lx\n", | |
3252 | ha->host_no, sp->cmd->serial_number, sp, | |
3253 | sp->flags, q->q_flag)); | |
3254 | ||
3255 | if (q == NULL) | |
3256 | continue; | |
3257 | fcport = q->fclun->fcport; | |
3258 | ||
3259 | if (atomic_read(&fcport->state) == | |
3260 | FCS_DEVICE_DEAD || | |
3261 | atomic_read(&fcport->ha->loop_state) == LOOP_DEAD) { | |
3262 | ||
3263 | __del_from_retry_queue(ha, sp); | |
3264 | sp->cmd->result = DID_NO_CONNECT << 16; | |
3265 | if (atomic_read(&fcport->ha->loop_state) == | |
3266 | LOOP_DOWN) | |
3267 | sp->err_id = SRB_ERR_LOOP; | |
3268 | else | |
3269 | sp->err_id = SRB_ERR_PORT; | |
3270 | sp->cmd->host_scribble = | |
3271 | (unsigned char *) NULL; | |
3272 | __add_to_done_queue(ha, sp); | |
3273 | dead_cnt++; | |
3274 | } else if (atomic_read(&fcport->state) != | |
3275 | FCS_DEVICE_LOST) { | |
3276 | ||
3277 | __del_from_retry_queue(ha, sp); | |
3278 | sp->cmd->result = DID_BUS_BUSY << 16; | |
3279 | sp->cmd->host_scribble = | |
3280 | (unsigned char *) NULL; | |
3281 | __add_to_done_queue(ha, sp); | |
3282 | online_cnt++; | |
3283 | } | |
3284 | } /* list_for_each_safe() */ | |
3285 | spin_unlock_irqrestore(&ha->list_lock, flags); | |
3286 | ||
3287 | DEBUG(printk("scsi(%ld): done processing retry queue " | |
3288 | "- dead=%d, online=%d\n ", | |
3289 | ha->host_no, dead_cnt, online_cnt)); | |
3290 | } | |
3291 | ||
3292 | /* Process commands in scsi retry queue */ | |
3293 | if (test_and_clear_bit(SCSI_RESTART_NEEDED, &ha->dpc_flags)) { | |
3294 | /* | |
3295 | * Any requests we want to delay for some period is put | |
3296 | * in the scsi retry queue with a delay added. The | |
3297 | * timer will schedule a "scsi_restart_needed" every | |
3298 | * second as long as there are requests in the scsi | |
3299 | * queue. | |
3300 | */ | |
3301 | DEBUG(printk("scsi(%ld): DPC checking scsi " | |
3302 | "retry_q.total=%d\n", | |
3303 | ha->host_no, ha->scsi_retry_q_cnt)); | |
3304 | ||
3305 | online_cnt = 0; | |
3306 | spin_lock_irqsave(&ha->list_lock, flags); | |
3307 | list_for_each_safe(list, templist, | |
3308 | &ha->scsi_retry_queue) { | |
3309 | ||
3310 | sp = list_entry(list, srb_t, list); | |
3311 | q = sp->lun_queue; | |
3312 | tq = sp->tgt_queue; | |
3313 | ||
3314 | DEBUG3(printk("scsi(%ld): scsi_retry_q: " | |
3315 | "pid=%ld sp=%p, spflags=0x%x, " | |
3316 | "q_flag= 0x%lx,q_state=%d\n", | |
3317 | ha->host_no, sp->cmd->serial_number, | |
3318 | sp, sp->flags, q->q_flag, q->q_state)); | |
3319 | ||
3320 | /* Was this lun suspended */ | |
3321 | if (q->q_state != LUN_STATE_WAIT) { | |
3322 | online_cnt++; | |
3323 | __del_from_scsi_retry_queue(ha, sp); | |
3324 | ||
3325 | if (test_bit(TQF_RETRY_CMDS, | |
3326 | &tq->flags)) { | |
3327 | qla2x00_extend_timeout(sp->cmd, | |
3328 | (sp->cmd->timeout_per_command / HZ) - QLA_CMD_TIMER_DELTA); | |
3329 | __add_to_pending_queue(ha, sp); | |
3330 | retry_cmds++; | |
3331 | } else | |
3332 | __add_to_retry_queue(ha, sp); | |
3333 | } | |
3334 | ||
3335 | /* Was this command suspended for N secs */ | |
3336 | if (sp->delay != 0) { | |
3337 | sp->delay--; | |
3338 | if (sp->delay == 0) { | |
3339 | online_cnt++; | |
3340 | __del_from_scsi_retry_queue( | |
3341 | ha, sp); | |
3342 | __add_to_retry_queue(ha,sp); | |
3343 | } | |
3344 | } | |
3345 | } | |
3346 | spin_unlock_irqrestore(&ha->list_lock, flags); | |
3347 | ||
3348 | /* Clear all Target Unsuspended bits */ | |
3349 | for (t = 0; t < ha->max_targets; t++) { | |
3350 | if ((tq = ha->otgt[t]) == NULL) | |
3351 | continue; | |
3352 | ||
3353 | if (test_bit(TQF_RETRY_CMDS, &tq->flags)) | |
3354 | clear_bit(TQF_RETRY_CMDS, &tq->flags); | |
3355 | } | |
3356 | if (retry_cmds) | |
3357 | qla2x00_next(ha); | |
3358 | ||
3359 | DEBUG(if (online_cnt > 0)) | |
3360 | DEBUG(printk("scsi(%ld): dpc() found scsi reqs to " | |
3361 | "restart= %d\n", | |
3362 | ha->host_no, online_cnt)); | |
3363 | } | |
3364 | ||
3365 | if (ha->flags.mbox_busy) { | |
3366 | if (!list_empty(&ha->done_queue)) | |
3367 | qla2x00_done(ha); | |
3368 | ||
3369 | ha->dpc_active = 0; | |
3370 | continue; | |
3371 | } | |
3372 | ||
3373 | if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) { | |
3374 | ||
3375 | DEBUG(printk("scsi(%ld): dpc: sched " | |
3376 | "qla2x00_abort_isp ha = %p\n", | |
3377 | ha->host_no, ha)); | |
3378 | if (!(test_and_set_bit(ABORT_ISP_ACTIVE, | |
3379 | &ha->dpc_flags))) { | |
3380 | ||
3381 | if (qla2x00_abort_isp(ha)) { | |
3382 | /* failed. retry later */ | |
3383 | set_bit(ISP_ABORT_NEEDED, | |
3384 | &ha->dpc_flags); | |
3385 | } | |
3386 | clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); | |
3387 | } | |
3388 | DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n", | |
3389 | ha->host_no)); | |
3390 | } | |
3391 | ||
3392 | if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) && | |
3393 | (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) { | |
3394 | ||
3395 | DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n", | |
3396 | ha->host_no)); | |
3397 | ||
3398 | qla2x00_rst_aen(ha); | |
3399 | clear_bit(RESET_ACTIVE, &ha->dpc_flags); | |
3400 | } | |
3401 | ||
3402 | /* Retry each device up to login retry count */ | |
3403 | if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) && | |
3404 | !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) && | |
3405 | atomic_read(&ha->loop_state) != LOOP_DOWN) { | |
3406 | ||
3407 | DEBUG(printk("scsi(%ld): qla2x00_port_login()\n", | |
3408 | ha->host_no)); | |
3409 | ||
3410 | next_loopid = 0; | |
3411 | list_for_each_entry(fcport, &ha->fcports, list) { | |
3412 | if (fcport->port_type != FCT_TARGET) | |
3413 | continue; | |
3414 | ||
3415 | /* | |
3416 | * If the port is not ONLINE then try to login | |
3417 | * to it if we haven't run out of retries. | |
3418 | */ | |
3419 | if (atomic_read(&fcport->state) != FCS_ONLINE && | |
3420 | fcport->login_retry) { | |
3421 | ||
3422 | fcport->login_retry--; | |
3423 | if (fcport->flags & FCF_FABRIC_DEVICE) { | |
3424 | if (fcport->flags & | |
3425 | FCF_TAPE_PRESENT) | |
3426 | qla2x00_fabric_logout( | |
3427 | ha, | |
3428 | fcport->loop_id); | |
3429 | status = qla2x00_fabric_login( | |
3430 | ha, fcport, &next_loopid); | |
3431 | } else | |
3432 | status = | |
3433 | qla2x00_local_device_login( | |
3434 | ha, fcport->loop_id); | |
3435 | ||
3436 | if (status == QLA_SUCCESS) { | |
3437 | fcport->old_loop_id = fcport->loop_id; | |
3438 | ||
3439 | DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n", | |
3440 | ha->host_no, fcport->loop_id)); | |
3441 | ||
3442 | fcport->port_login_retry_count = | |
3443 | ha->port_down_retry_count * PORT_RETRY_TIME; | |
3444 | atomic_set(&fcport->state, FCS_ONLINE); | |
3445 | atomic_set(&fcport->port_down_timer, | |
3446 | ha->port_down_retry_count * PORT_RETRY_TIME); | |
3447 | ||
3448 | fcport->login_retry = 0; | |
3449 | } else if (status == 1) { | |
3450 | set_bit(RELOGIN_NEEDED, &ha->dpc_flags); | |
3451 | /* retry the login again */ | |
3452 | DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n", | |
3453 | ha->host_no, | |
3454 | fcport->login_retry, fcport->loop_id)); | |
3455 | } else { | |
3456 | fcport->login_retry = 0; | |
3457 | } | |
3458 | } | |
3459 | if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) | |
3460 | break; | |
3461 | } | |
3462 | DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n", | |
3463 | ha->host_no)); | |
3464 | } | |
3465 | ||
3466 | if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) && | |
3467 | atomic_read(&ha->loop_state) != LOOP_DOWN) { | |
3468 | ||
3469 | clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags); | |
3470 | DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n", | |
3471 | ha->host_no)); | |
3472 | ||
3473 | set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); | |
3474 | ||
3475 | DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n", | |
3476 | ha->host_no)); | |
3477 | } | |
3478 | ||
3479 | if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) { | |
3480 | ||
3481 | DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n", | |
3482 | ha->host_no)); | |
3483 | ||
3484 | if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, | |
3485 | &ha->dpc_flags))) { | |
3486 | ||
3487 | qla2x00_loop_resync(ha); | |
3488 | ||
3489 | clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags); | |
3490 | } | |
3491 | ||
3492 | DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n", | |
3493 | ha->host_no)); | |
3494 | } | |
3495 | ||
3496 | ||
3497 | if (test_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags)) { | |
3498 | DEBUG(printk("scsi(%ld): qla2x00_restart_queues()\n", | |
3499 | ha->host_no)); | |
3500 | ||
3501 | qla2x00_restart_queues(ha, 0); | |
3502 | ||
3503 | DEBUG(printk("scsi(%ld): qla2x00_restart_queues - end\n", | |
3504 | ha->host_no)); | |
3505 | } | |
3506 | ||
3507 | if (test_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags)) { | |
3508 | ||
3509 | DEBUG(printk("scsi(%ld): qla2x00_abort_queues()\n", | |
3510 | ha->host_no)); | |
3511 | ||
3512 | qla2x00_abort_queues(ha, 0); | |
3513 | ||
3514 | DEBUG(printk("scsi(%ld): qla2x00_abort_queues - end\n", | |
3515 | ha->host_no)); | |
3516 | } | |
3517 | ||
3518 | if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) { | |
3519 | ||
3520 | DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n", | |
3521 | ha->host_no)); | |
3522 | ||
3523 | qla2x00_rescan_fcports(ha); | |
3524 | ||
3525 | DEBUG(printk("scsi(%ld): Rescan flagged fcports..." | |
3526 | "end.\n", | |
3527 | ha->host_no)); | |
3528 | } | |
3529 | ||
3530 | ||
3531 | if (!ha->interrupts_on) | |
3532 | qla2x00_enable_intrs(ha); | |
3533 | ||
3534 | if (!list_empty(&ha->done_queue)) | |
3535 | qla2x00_done(ha); | |
3536 | ||
3537 | ha->dpc_active = 0; | |
3538 | } /* End of while(1) */ | |
3539 | ||
3540 | DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no)); | |
3541 | ||
3542 | /* | |
3543 | * Make sure that nobody tries to wake us up again. | |
3544 | */ | |
3545 | ha->dpc_wait = NULL; | |
3546 | ha->dpc_active = 0; | |
3547 | ||
3548 | complete_and_exit(&ha->dpc_exited, 0); | |
3549 | } | |
3550 | ||
3551 | /* | |
3552 | * qla2x00_abort_queues | |
3553 | * Abort all commands on queues on device | |
3554 | * | |
3555 | * Input: | |
3556 | * ha = adapter block pointer. | |
3557 | * | |
3558 | * Context: | |
3559 | * Interrupt context. | |
3560 | */ | |
3561 | void | |
3562 | qla2x00_abort_queues(scsi_qla_host_t *ha, uint8_t doneqflg) | |
3563 | { | |
3564 | ||
3565 | srb_t *sp; | |
3566 | struct list_head *list, *temp; | |
3567 | unsigned long flags; | |
3568 | ||
3569 | clear_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags); | |
3570 | ||
3571 | /* Return all commands device queues. */ | |
3572 | spin_lock_irqsave(&ha->list_lock,flags); | |
3573 | list_for_each_safe(list, temp, &ha->pending_queue) { | |
3574 | sp = list_entry(list, srb_t, list); | |
3575 | ||
3576 | if (sp->flags & SRB_ABORTED) | |
3577 | continue; | |
3578 | ||
3579 | /* Remove srb from LUN queue. */ | |
3580 | __del_from_pending_queue(ha, sp); | |
3581 | ||
3582 | /* Set ending status. */ | |
3583 | sp->cmd->result = DID_BUS_BUSY << 16; | |
3584 | ||
3585 | __add_to_done_queue(ha, sp); | |
3586 | } | |
3587 | spin_unlock_irqrestore(&ha->list_lock, flags); | |
3588 | } | |
3589 | ||
3590 | /* | |
3591 | * qla2x00_rst_aen | |
3592 | * Processes asynchronous reset. | |
3593 | * | |
3594 | * Input: | |
3595 | * ha = adapter block pointer. | |
3596 | */ | |
3597 | static void | |
3598 | qla2x00_rst_aen(scsi_qla_host_t *ha) | |
3599 | { | |
3600 | if (ha->flags.online && !ha->flags.reset_active && | |
3601 | !atomic_read(&ha->loop_down_timer) && | |
3602 | !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) { | |
3603 | do { | |
3604 | clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); | |
3605 | ||
3606 | /* | |
3607 | * Issue marker command only when we are going to start | |
3608 | * the I/O. | |
3609 | */ | |
3610 | ha->marker_needed = 1; | |
3611 | } while (!atomic_read(&ha->loop_down_timer) && | |
3612 | (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags))); | |
3613 | } | |
3614 | } | |
3615 | ||
3616 | ||
3617 | /* | |
3618 | * This routine will allocate SP from the free queue | |
3619 | * input: | |
3620 | * scsi_qla_host_t * | |
3621 | * output: | |
3622 | * srb_t * or NULL | |
3623 | */ | |
3624 | static srb_t * | |
3625 | qla2x00_get_new_sp(scsi_qla_host_t *ha) | |
3626 | { | |
3627 | srb_t *sp; | |
3628 | ||
3629 | sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); | |
3630 | if (sp) | |
3631 | atomic_set(&sp->ref_count, 1); | |
3632 | return (sp); | |
3633 | } | |
3634 | ||
3635 | /************************************************************************** | |
3636 | * qla2x00_timer | |
3637 | * | |
3638 | * Description: | |
3639 | * One second timer | |
3640 | * | |
3641 | * Context: Interrupt | |
3642 | ***************************************************************************/ | |
3643 | static void | |
3644 | qla2x00_timer(scsi_qla_host_t *ha) | |
3645 | { | |
3646 | int t,l; | |
3647 | unsigned long cpu_flags = 0; | |
3648 | fc_port_t *fcport; | |
3649 | os_lun_t *lq; | |
3650 | os_tgt_t *tq; | |
3651 | int start_dpc = 0; | |
3652 | int index; | |
3653 | srb_t *sp; | |
3654 | ||
3655 | /* | |
3656 | * We try and restart any request in the retry queue every second. | |
3657 | */ | |
3658 | if (!list_empty(&ha->retry_queue)) { | |
3659 | set_bit(PORT_RESTART_NEEDED, &ha->dpc_flags); | |
3660 | start_dpc++; | |
3661 | } | |
3662 | ||
3663 | /* | |
3664 | * We try and restart any request in the scsi_retry queue every second. | |
3665 | */ | |
3666 | if (!list_empty(&ha->scsi_retry_queue)) { | |
3667 | set_bit(SCSI_RESTART_NEEDED, &ha->dpc_flags); | |
3668 | start_dpc++; | |
3669 | } | |
3670 | ||
3671 | /* | |
3672 | * Ports - Port down timer. | |
3673 | * | |
3674 | * Whenever, a port is in the LOST state we start decrementing its port | |
3675 | * down timer every second until it reaches zero. Once it reaches zero | |
3676 | * the port it marked DEAD. | |
3677 | */ | |
3678 | t = 0; | |
3679 | list_for_each_entry(fcport, &ha->fcports, list) { | |
3680 | if (fcport->port_type != FCT_TARGET) | |
3681 | continue; | |
3682 | ||
3683 | if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) { | |
3684 | ||
3685 | if (atomic_read(&fcport->port_down_timer) == 0) | |
3686 | continue; | |
3687 | ||
3688 | if (atomic_dec_and_test(&fcport->port_down_timer) != 0) | |
3689 | atomic_set(&fcport->state, FCS_DEVICE_DEAD); | |
3690 | ||
3691 | DEBUG(printk("scsi(%ld): fcport-%d - port retry count: " | |
3692 | "%d remainning\n", | |
3693 | ha->host_no, | |
3694 | t, atomic_read(&fcport->port_down_timer))); | |
3695 | } | |
3696 | t++; | |
3697 | } /* End of for fcport */ | |
3698 | ||
3699 | /* | |
3700 | * LUNS - lun suspend timer. | |
3701 | * | |
3702 | * Whenever, a lun is suspended the timer starts decrementing its | |
3703 | * suspend timer every second until it reaches zero. Once it reaches | |
3704 | * zero the lun retry count is decremented. | |
3705 | */ | |
3706 | ||
3707 | /* | |
3708 | * FIXME(dg) - Need to convert this linear search of luns into a search | |
3709 | * of a list of suspended luns. | |
3710 | */ | |
3711 | for (t = 0; t < ha->max_targets; t++) { | |
3712 | if ((tq = ha->otgt[t]) == NULL) | |
3713 | continue; | |
3714 | ||
3715 | for (l = 0; l < ha->max_luns; l++) { | |
3716 | if ((lq = (os_lun_t *) tq->olun[l]) == NULL) | |
3717 | continue; | |
3718 | ||
3719 | spin_lock_irqsave(&lq->q_lock, cpu_flags); | |
3720 | if (lq->q_state == LUN_STATE_WAIT && | |
3721 | atomic_read(&lq->q_timer) != 0) { | |
3722 | ||
3723 | if (atomic_dec_and_test(&lq->q_timer) != 0) { | |
3724 | /* | |
3725 | * A delay should immediately | |
3726 | * transition to a READY state | |
3727 | */ | |
3728 | if (test_and_clear_bit(LUN_EXEC_DELAYED, | |
3729 | &lq->q_flag)) { | |
3730 | lq->q_state = LUN_STATE_READY; | |
3731 | } | |
3732 | else { | |
3733 | lq->q_count++; | |
3734 | if (lq->q_count == lq->q_max) | |
3735 | lq->q_state = | |
3736 | LUN_STATE_TIMEOUT; | |
3737 | else | |
3738 | lq->q_state = | |
3739 | LUN_STATE_RUN; | |
3740 | } | |
3741 | } | |
3742 | DEBUG3(printk("scsi(%ld): lun%d - timer %d, " | |
3743 | "count=%d, max=%d, state=%d\n", | |
3744 | ha->host_no, | |
3745 | l, | |
3746 | atomic_read(&lq->q_timer), | |
3747 | lq->q_count, lq->q_max, lq->q_state)); | |
3748 | } | |
3749 | spin_unlock_irqrestore(&lq->q_lock, cpu_flags); | |
3750 | } /* End of for luns */ | |
3751 | } /* End of for targets */ | |
3752 | ||
3753 | /* Loop down handler. */ | |
3754 | if (atomic_read(&ha->loop_down_timer) > 0 && | |
3755 | !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) { | |
3756 | ||
3757 | if (atomic_read(&ha->loop_down_timer) == | |
3758 | ha->loop_down_abort_time) { | |
3759 | ||
3760 | DEBUG(printk("scsi(%ld): Loop Down - aborting the " | |
3761 | "queues before time expire\n", | |
3762 | ha->host_no)); | |
3763 | ||
3764 | if (!IS_QLA2100(ha) && ha->link_down_timeout) | |
3765 | atomic_set(&ha->loop_state, LOOP_DEAD); | |
3766 | ||
3767 | /* Schedule an ISP abort to return any tape commands. */ | |
3768 | spin_lock_irqsave(&ha->hardware_lock, cpu_flags); | |
3769 | for (index = 1; index < MAX_OUTSTANDING_COMMANDS; | |
3770 | index++) { | |
3771 | sp = ha->outstanding_cmds[index]; | |
3772 | if (!sp) | |
3773 | continue; | |
3774 | if (!(sp->fclun->fcport->flags & | |
3775 | FCF_TAPE_PRESENT)) | |
3776 | continue; | |
3777 | ||
3778 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
3779 | break; | |
3780 | } | |
3781 | spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags); | |
3782 | ||
3783 | set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags); | |
3784 | start_dpc++; | |
3785 | } | |
3786 | ||
3787 | /* if the loop has been down for 4 minutes, reinit adapter */ | |
3788 | if (atomic_dec_and_test(&ha->loop_down_timer) != 0) { | |
3789 | DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - " | |
3790 | "restarting queues.\n", | |
3791 | ha->host_no)); | |
3792 | ||
3793 | set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags); | |
3794 | start_dpc++; | |
3795 | ||
3796 | if (!(ha->device_flags & DFLG_NO_CABLE)) { | |
3797 | DEBUG(printk("scsi(%ld): Loop down - " | |
3798 | "aborting ISP.\n", | |
3799 | ha->host_no)); | |
3800 | qla_printk(KERN_WARNING, ha, | |
3801 | "Loop down - aborting ISP.\n"); | |
3802 | ||
3803 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
3804 | } | |
3805 | } | |
3806 | DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n", | |
3807 | ha->host_no, | |
3808 | atomic_read(&ha->loop_down_timer))); | |
3809 | } | |
3810 | ||
3811 | /* | |
3812 | * Done Q Handler -- dgFIXME This handler will kick off doneq if we | |
3813 | * haven't process it in 2 seconds. | |
3814 | */ | |
3815 | if (!list_empty(&ha->done_queue)) | |
3816 | qla2x00_done(ha); | |
3817 | ||
3818 | ||
3819 | /* Schedule the DPC routine if needed */ | |
3820 | if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) || | |
3821 | test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) || | |
3822 | start_dpc || | |
3823 | test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) || | |
3824 | test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) && | |
3825 | ha->dpc_wait && !ha->dpc_active) { | |
3826 | ||
3827 | up(ha->dpc_wait); | |
3828 | } | |
3829 | ||
3830 | qla2x00_restart_timer(ha, WATCH_INTERVAL); | |
3831 | } | |
3832 | ||
3833 | /* | |
3834 | * qla2x00_extend_timeout | |
3835 | * This routine will extend the timeout to the specified value. | |
3836 | * | |
3837 | * Input: | |
3838 | * cmd = SCSI command structure | |
3839 | * | |
3840 | * Returns: | |
3841 | * None. | |
3842 | */ | |
3843 | void | |
3844 | qla2x00_extend_timeout(struct scsi_cmnd *cmd, int timeout) | |
3845 | { | |
3846 | srb_t *sp = (srb_t *) CMD_SP(cmd); | |
3847 | u_long our_jiffies = (timeout * HZ) + jiffies; | |
3848 | ||
3849 | sp->ext_history= 0; | |
3850 | sp->e_start = jiffies; | |
3851 | if (cmd->eh_timeout.function) { | |
3852 | mod_timer(&cmd->eh_timeout,our_jiffies); | |
3853 | sp->ext_history |= 1; | |
3854 | } | |
3855 | if (sp->timer.function != NULL) { | |
3856 | /* | |
3857 | * Our internal timer should timeout before the midlayer has a | |
3858 | * chance begin the abort process | |
3859 | */ | |
3860 | mod_timer(&sp->timer,our_jiffies - (QLA_CMD_TIMER_DELTA * HZ)); | |
3861 | ||
3862 | sp->ext_history |= 2; | |
3863 | } | |
3864 | } | |
3865 | ||
3866 | /************************************************************************** | |
3867 | * qla2x00_cmd_timeout | |
3868 | * | |
3869 | * Description: | |
3870 | * Handles the command if it times out in any state. | |
3871 | * | |
3872 | * Input: | |
3873 | * sp - pointer to validate | |
3874 | * | |
3875 | * Returns: | |
3876 | * None. | |
3877 | * Note:Need to add the support for if( sp->state == SRB_FAILOVER_STATE). | |
3878 | **************************************************************************/ | |
3879 | void | |
3880 | qla2x00_cmd_timeout(srb_t *sp) | |
3881 | { | |
3882 | int t, l; | |
3883 | int processed; | |
3884 | scsi_qla_host_t *vis_ha, *dest_ha; | |
3885 | struct scsi_cmnd *cmd; | |
3886 | unsigned long flags, cpu_flags; | |
3887 | fc_port_t *fcport; | |
3888 | ||
3889 | cmd = sp->cmd; | |
3890 | vis_ha = (scsi_qla_host_t *)cmd->device->host->hostdata; | |
3891 | ||
3892 | DEBUG3(printk("cmd_timeout: Entering sp->state = %x\n", sp->state)); | |
3893 | ||
3894 | t = cmd->device->id; | |
3895 | l = cmd->device->lun; | |
3896 | fcport = sp->fclun->fcport; | |
3897 | dest_ha = sp->ha; | |
3898 | ||
3899 | /* | |
3900 | * If IO is found either in retry Queue | |
3901 | * OR in Lun Queue | |
3902 | * Return this IO back to host | |
3903 | */ | |
3904 | spin_lock_irqsave(&vis_ha->list_lock, flags); | |
3905 | processed = 0; | |
3906 | if (sp->state == SRB_PENDING_STATE) { | |
3907 | __del_from_pending_queue(vis_ha, sp); | |
3908 | DEBUG2(printk("scsi(%ld): Found in Pending queue pid %ld, " | |
3909 | "State = %x., fcport state=%d sjiffs=%lx njiffs=%lx\n", | |
3910 | vis_ha->host_no, cmd->serial_number, sp->state, | |
3911 | atomic_read(&fcport->state), sp->r_start, jiffies)); | |
3912 | ||
3913 | /* | |
3914 | * If FC_DEVICE is marked as dead return the cmd with | |
3915 | * DID_NO_CONNECT status. Otherwise set the host_byte to | |
3916 | * DID_BUS_BUSY to let the OS retry this cmd. | |
3917 | */ | |
3918 | if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD || | |
3919 | atomic_read(&fcport->ha->loop_state) == LOOP_DEAD) { | |
3920 | cmd->result = DID_NO_CONNECT << 16; | |
3921 | if (atomic_read(&fcport->ha->loop_state) == LOOP_DOWN) | |
3922 | sp->err_id = SRB_ERR_LOOP; | |
3923 | else | |
3924 | sp->err_id = SRB_ERR_PORT; | |
3925 | } else { | |
3926 | cmd->result = DID_BUS_BUSY << 16; | |
3927 | } | |
3928 | __add_to_done_queue(vis_ha, sp); | |
3929 | processed++; | |
3930 | } | |
3931 | spin_unlock_irqrestore(&vis_ha->list_lock, flags); | |
3932 | ||
3933 | if (processed) { | |
3934 | qla2x00_done(vis_ha); | |
3935 | return; | |
3936 | } | |
3937 | ||
3938 | spin_lock_irqsave(&dest_ha->list_lock, flags); | |
3939 | if ((sp->state == SRB_RETRY_STATE) || | |
3940 | (sp->state == SRB_SCSI_RETRY_STATE)) { | |
3941 | ||
3942 | DEBUG2(printk("scsi(%ld): Found in (Scsi) Retry queue or " | |
3943 | "failover Q pid %ld, State = %x., fcport state=%d " | |
3944 | "jiffies=%lx retried=%d\n", | |
3945 | dest_ha->host_no, cmd->serial_number, sp->state, | |
3946 | atomic_read(&fcport->state), jiffies, cmd->retries)); | |
3947 | ||
3948 | if ((sp->state == SRB_RETRY_STATE)) { | |
3949 | __del_from_retry_queue(dest_ha, sp); | |
3950 | } else if ((sp->state == SRB_SCSI_RETRY_STATE)) { | |
3951 | __del_from_scsi_retry_queue(dest_ha, sp); | |
3952 | } | |
3953 | ||
3954 | /* | |
3955 | * If FC_DEVICE is marked as dead return the cmd with | |
3956 | * DID_NO_CONNECT status. Otherwise set the host_byte to | |
3957 | * DID_BUS_BUSY to let the OS retry this cmd. | |
3958 | */ | |
3959 | if ((atomic_read(&fcport->state) == FCS_DEVICE_DEAD) || | |
3960 | atomic_read(&dest_ha->loop_state) == LOOP_DEAD) { | |
3961 | qla2x00_extend_timeout(cmd, EXTEND_CMD_TIMEOUT); | |
3962 | cmd->result = DID_NO_CONNECT << 16; | |
3963 | if (atomic_read(&dest_ha->loop_state) == LOOP_DOWN) | |
3964 | sp->err_id = SRB_ERR_LOOP; | |
3965 | else | |
3966 | sp->err_id = SRB_ERR_PORT; | |
3967 | } else { | |
3968 | cmd->result = DID_BUS_BUSY << 16; | |
3969 | } | |
3970 | ||
3971 | __add_to_done_queue(dest_ha, sp); | |
3972 | processed++; | |
3973 | } | |
3974 | spin_unlock_irqrestore(&dest_ha->list_lock, flags); | |
3975 | ||
3976 | if (processed) { | |
3977 | qla2x00_done(dest_ha); | |
3978 | return; | |
3979 | } | |
3980 | ||
3981 | spin_lock_irqsave(&dest_ha->list_lock, cpu_flags); | |
3982 | if (sp->state == SRB_DONE_STATE) { | |
3983 | /* IO in done_q -- leave it */ | |
3984 | DEBUG(printk("scsi(%ld): Found in Done queue pid %ld sp=%p.\n", | |
3985 | dest_ha->host_no, cmd->serial_number, sp)); | |
3986 | } else if (sp->state == SRB_SUSPENDED_STATE) { | |
3987 | DEBUG(printk("scsi(%ld): Found SP %p in suspended state " | |
3988 | "- pid %ld:\n", | |
3989 | dest_ha->host_no, sp, cmd->serial_number)); | |
3990 | DEBUG(qla2x00_dump_buffer((uint8_t *)sp, sizeof(srb_t));) | |
3991 | } else if (sp->state == SRB_ACTIVE_STATE) { | |
3992 | /* | |
3993 | * IO is with ISP find the command in our active list. | |
3994 | */ | |
3995 | spin_unlock_irqrestore(&dest_ha->list_lock, cpu_flags); | |
3996 | spin_lock_irqsave(&dest_ha->hardware_lock, flags); | |
3997 | if (sp == dest_ha->outstanding_cmds[ | |
3998 | (unsigned long)sp->cmd->host_scribble]) { | |
3999 | ||
4000 | DEBUG(printk("cmd_timeout: Found in ISP \n")); | |
4001 | ||
4002 | if (sp->flags & SRB_TAPE) { | |
4003 | /* | |
4004 | * We cannot allow the midlayer error handler | |
4005 | * to wakeup and begin the abort process. | |
4006 | * Extend the timer so that the firmware can | |
4007 | * properly return the IOCB. | |
4008 | */ | |
4009 | DEBUG(printk("cmd_timeout: Extending timeout " | |
4010 | "of FCP2 tape command!\n")); | |
4011 | qla2x00_extend_timeout(sp->cmd, | |
4012 | EXTEND_CMD_TIMEOUT); | |
4013 | } | |
4014 | sp->state = SRB_ACTIVE_TIMEOUT_STATE; | |
4015 | spin_unlock_irqrestore(&dest_ha->hardware_lock, flags); | |
4016 | } else { | |
4017 | spin_unlock_irqrestore(&dest_ha->hardware_lock, flags); | |
4018 | printk(KERN_INFO | |
4019 | "qla_cmd_timeout: State indicates it is with " | |
4020 | "ISP, But not in active array\n"); | |
4021 | } | |
4022 | spin_lock_irqsave(&dest_ha->list_lock, cpu_flags); | |
4023 | } else if (sp->state == SRB_ACTIVE_TIMEOUT_STATE) { | |
4024 | DEBUG(printk("qla2100%ld: Found in Active timeout state" | |
4025 | "pid %ld, State = %x., \n", | |
4026 | dest_ha->host_no, | |
4027 | sp->cmd->serial_number, sp->state);) | |
4028 | } else { | |
4029 | /* EMPTY */ | |
4030 | DEBUG2(printk("cmd_timeout%ld: LOST command state = " | |
4031 | "0x%x, sp=%p\n", | |
4032 | vis_ha->host_no, sp->state,sp);) | |
4033 | ||
4034 | qla_printk(KERN_INFO, vis_ha, | |
4035 | "cmd_timeout: LOST command state = 0x%x\n", sp->state); | |
4036 | } | |
4037 | spin_unlock_irqrestore(&dest_ha->list_lock, cpu_flags); | |
4038 | ||
4039 | DEBUG3(printk("cmd_timeout: Leaving\n");) | |
4040 | } | |
4041 | ||
4042 | /************************************************************************** | |
4043 | * qla2x00_done | |
4044 | * Process completed commands. | |
4045 | * | |
4046 | * Input: | |
4047 | * old_ha = adapter block pointer. | |
4048 | * | |
4049 | **************************************************************************/ | |
4050 | void | |
4051 | qla2x00_done(scsi_qla_host_t *old_ha) | |
4052 | { | |
4053 | os_lun_t *lq; | |
4054 | struct scsi_cmnd *cmd; | |
4055 | unsigned long flags = 0; | |
4056 | scsi_qla_host_t *ha; | |
4057 | scsi_qla_host_t *vis_ha; | |
4058 | int send_marker_once = 0; | |
4059 | srb_t *sp, *sptemp; | |
4060 | LIST_HEAD(local_sp_list); | |
4061 | ||
4062 | /* | |
4063 | * Get into local queue such that we do not wind up calling done queue | |
4064 | * tasklet for the same IOs from DPC or any other place. | |
4065 | */ | |
4066 | spin_lock_irqsave(&old_ha->list_lock, flags); | |
4067 | list_splice_init(&old_ha->done_queue, &local_sp_list); | |
4068 | spin_unlock_irqrestore(&old_ha->list_lock, flags); | |
4069 | ||
4070 | /* | |
4071 | * All done commands are in the local queue, now do the call back. | |
4072 | */ | |
4073 | list_for_each_entry_safe(sp, sptemp, &local_sp_list, list) { | |
4074 | old_ha->done_q_cnt--; | |
4075 | sp->state = SRB_NO_QUEUE_STATE; | |
4076 | ||
4077 | /* remove command from local list */ | |
4078 | list_del_init(&sp->list); | |
4079 | ||
4080 | cmd = sp->cmd; | |
4081 | if (cmd == NULL) | |
4082 | continue; | |
4083 | ||
4084 | vis_ha = (scsi_qla_host_t *)cmd->device->host->hostdata; | |
4085 | lq = sp->lun_queue; | |
4086 | ha = sp->ha; | |
4087 | ||
4088 | if (sp->flags & SRB_DMA_VALID) { | |
4089 | sp->flags &= ~SRB_DMA_VALID; | |
4090 | ||
4091 | /* Release memory used for this I/O */ | |
4092 | if (cmd->use_sg) { | |
4093 | pci_unmap_sg(ha->pdev, cmd->request_buffer, | |
4094 | cmd->use_sg, cmd->sc_data_direction); | |
4095 | } else if (cmd->request_bufflen) { | |
4096 | pci_unmap_page(ha->pdev, sp->dma_handle, | |
4097 | cmd->request_bufflen, | |
4098 | cmd->sc_data_direction); | |
4099 | } | |
4100 | } | |
4101 | ||
4102 | ||
4103 | switch (host_byte(cmd->result)) { | |
4104 | case DID_OK: | |
4105 | case DID_ERROR: | |
4106 | break; | |
4107 | ||
4108 | case DID_RESET: | |
4109 | /* | |
4110 | * Set marker needed, so we don't have to | |
4111 | * send multiple markers | |
4112 | */ | |
4113 | if (!send_marker_once) { | |
4114 | ha->marker_needed = 1; | |
4115 | send_marker_once++; | |
4116 | } | |
4117 | ||
4118 | /* | |
4119 | * WORKAROUND | |
4120 | * | |
4121 | * A backdoor device-reset requires different | |
4122 | * error handling. This code differentiates | |
4123 | * between normal error handling and the | |
4124 | * backdoor method. | |
4125 | * | |
4126 | */ | |
4127 | if (ha->host->eh_active != EH_ACTIVE) | |
4128 | cmd->result = DID_BUS_BUSY << 16; | |
4129 | break; | |
4130 | ||
4131 | ||
4132 | case DID_ABORT: | |
4133 | sp->flags &= ~SRB_ABORT_PENDING; | |
4134 | sp->flags |= SRB_ABORTED; | |
4135 | ||
4136 | if (sp->flags & SRB_TIMEOUT) | |
4137 | cmd->result = DID_TIME_OUT << 16; | |
4138 | ||
4139 | break; | |
4140 | ||
4141 | default: | |
4142 | DEBUG2(printk("scsi(%ld:%d:%d) %s: did_error " | |
4143 | "= %d, comp-scsi= 0x%x-0x%x pid=%ld.\n", | |
4144 | vis_ha->host_no, | |
4145 | cmd->device->id, cmd->device->lun, | |
4146 | __func__, | |
4147 | host_byte(cmd->result), | |
4148 | CMD_COMPL_STATUS(cmd), | |
4149 | CMD_SCSI_STATUS(cmd), cmd->serial_number)); | |
4150 | break; | |
4151 | } | |
4152 | ||
4153 | /* | |
4154 | * Call the mid-level driver interrupt handler -- via sp_put() | |
4155 | */ | |
4156 | sp_put(ha, sp); | |
4157 | } /* end of while */ | |
4158 | } | |
4159 | ||
4160 | /* | |
4161 | * qla2x00_process_response_queue_in_zio_mode | |
4162 | * Process response queue completion as fast as possible | |
4163 | * to achieve Zero Interrupt Opertions-ZIO | |
4164 | * | |
4165 | * Input: | |
4166 | * ha = adapter block pointer. | |
4167 | * | |
4168 | * Context: | |
4169 | * Kernel context. | |
4170 | */ | |
4171 | static inline void | |
4172 | qla2x00_process_response_queue_in_zio_mode(scsi_qla_host_t *ha) | |
4173 | { | |
4174 | unsigned long flags; | |
4175 | ||
4176 | /* Check for unprocessed commands in response queue. */ | |
4177 | if (!ha->flags.process_response_queue) | |
4178 | return; | |
4179 | if (!ha->flags.online) | |
4180 | return; | |
4181 | if (ha->response_ring_ptr->signature == RESPONSE_PROCESSED) | |
4182 | return; | |
4183 | ||
4184 | spin_lock_irqsave(&ha->hardware_lock,flags); | |
4185 | qla2x00_process_response_queue(ha); | |
4186 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4187 | } | |
4188 | ||
4189 | /* | |
4190 | * qla2x00_next | |
4191 | * Retrieve and process next job in the LUN queue. | |
4192 | * | |
4193 | * Input: | |
4194 | * tq = SCSI target queue pointer. | |
4195 | * lq = SCSI LUN queue pointer. | |
4196 | * TGT_LOCK must be already obtained. | |
4197 | * | |
4198 | * Output: | |
4199 | * Releases TGT_LOCK upon exit. | |
4200 | * | |
4201 | * Context: | |
4202 | * Kernel/Interrupt context. | |
4203 | * | |
4204 | * Note: This routine will always try to start I/O from visible HBA. | |
4205 | */ | |
4206 | void | |
4207 | qla2x00_next(scsi_qla_host_t *vis_ha) | |
4208 | { | |
4209 | int rval; | |
4210 | unsigned long flags; | |
4211 | scsi_qla_host_t *dest_ha; | |
4212 | fc_port_t *fcport; | |
4213 | srb_t *sp, *sptemp; | |
4214 | LIST_HEAD(local_sp_list); | |
4215 | ||
4216 | dest_ha = NULL; | |
4217 | ||
4218 | spin_lock_irqsave(&vis_ha->list_lock, flags); | |
4219 | list_splice_init(&vis_ha->pending_queue, &local_sp_list); | |
4220 | vis_ha->qthreads = 0; | |
4221 | spin_unlock_irqrestore(&vis_ha->list_lock, flags); | |
4222 | ||
4223 | list_for_each_entry_safe(sp, sptemp, &local_sp_list, list) { | |
4224 | list_del_init(&sp->list); | |
4225 | sp->state = SRB_NO_QUEUE_STATE; | |
4226 | ||
4227 | fcport = sp->fclun->fcport; | |
4228 | dest_ha = fcport->ha; | |
4229 | ||
4230 | /* If device is dead then send request back to OS */ | |
4231 | if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD) { | |
4232 | sp->cmd->result = DID_NO_CONNECT << 16; | |
4233 | if (atomic_read(&dest_ha->loop_state) == LOOP_DOWN) | |
4234 | sp->err_id = SRB_ERR_LOOP; | |
4235 | else | |
4236 | sp->err_id = SRB_ERR_PORT; | |
4237 | ||
4238 | DEBUG3(printk("scsi(%ld): loop/port is down - pid=%ld, " | |
4239 | "sp=%p err_id=%d loopid=0x%x queued to dest HBA " | |
4240 | "scsi%ld.\n", dest_ha->host_no, | |
4241 | sp->cmd->serial_number, sp, sp->err_id, | |
4242 | fcport->loop_id, dest_ha->host_no)); | |
4243 | /* | |
4244 | * Initiate a failover - done routine will initiate. | |
4245 | */ | |
4246 | add_to_done_queue(vis_ha, sp); | |
4247 | ||
4248 | continue; | |
4249 | } | |
4250 | ||
4251 | /* | |
4252 | * SCSI Kluge: Whenever, we need to wait for an event such as | |
4253 | * loop down (i.e. loop_down_timer ) or port down (i.e. LUN | |
4254 | * request qeueue is suspended) then we will recycle new | |
4255 | * commands back to the SCSI layer. We do this because this is | |
4256 | * normally a temporary condition and we don't want the | |
4257 | * mid-level scsi.c driver to get upset and start aborting | |
4258 | * commands. The timeout value is extracted from the command | |
4259 | * minus 1-second and put on a retry queue (watchdog). Once the | |
4260 | * command timeout it is returned to the mid-level with a BUSY | |
4261 | * status, so the mid-level will retry it. This process | |
4262 | * continues until the LOOP DOWN time expires or the condition | |
4263 | * goes away. | |
4264 | */ | |
4265 | if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && | |
4266 | (atomic_read(&fcport->state) != FCS_ONLINE || | |
4267 | test_bit(ABORT_ISP_ACTIVE, &dest_ha->dpc_flags) || | |
4268 | atomic_read(&dest_ha->loop_state) != LOOP_READY)) { | |
4269 | ||
4270 | DEBUG3(printk("scsi(%ld): pid=%ld port=0x%x state=%d " | |
4271 | "loop state=%d, loop counter=0x%x " | |
4272 | "dpc_flags=0x%lx\n", sp->cmd->serial_number, | |
4273 | dest_ha->host_no, fcport->loop_id, | |
4274 | atomic_read(&fcport->state), | |
4275 | atomic_read(&dest_ha->loop_state), | |
4276 | atomic_read(&dest_ha->loop_down_timer), | |
4277 | dest_ha->dpc_flags)); | |
4278 | ||
4279 | qla2x00_extend_timeout(sp->cmd, EXTEND_CMD_TIMEOUT); | |
4280 | add_to_retry_queue(vis_ha, sp); | |
4281 | ||
4282 | continue; | |
4283 | } | |
4284 | ||
4285 | /* | |
4286 | * If this request's lun is suspended then put the request on | |
4287 | * the scsi_retry queue. | |
4288 | */ | |
4289 | if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && | |
4290 | sp->lun_queue->q_state == LUN_STATE_WAIT) { | |
4291 | DEBUG3(printk("scsi(%ld): lun wait state - pid=%ld, " | |
4292 | "opcode=%d, allowed=%d, retries=%d\n", | |
4293 | dest_ha->host_no, | |
4294 | sp->cmd->serial_number, | |
4295 | sp->cmd->cmnd[0], | |
4296 | sp->cmd->allowed, | |
4297 | sp->cmd->retries)); | |
4298 | ||
4299 | add_to_scsi_retry_queue(vis_ha, sp); | |
4300 | ||
4301 | continue; | |
4302 | } | |
4303 | ||
4304 | sp->lun_queue->io_cnt++; | |
4305 | ||
4306 | rval = qla2x00_start_scsi(sp); | |
4307 | if (rval != QLA_SUCCESS) { | |
4308 | /* Place request back on top of device queue */ | |
4309 | /* add to the top of queue */ | |
4310 | add_to_pending_queue_head(vis_ha, sp); | |
4311 | ||
4312 | sp->lun_queue->io_cnt--; | |
4313 | } | |
4314 | } | |
4315 | ||
4316 | if (!IS_QLA2100(vis_ha) && !IS_QLA2200(vis_ha)) { | |
4317 | /* Process response_queue if ZIO support is enabled*/ | |
4318 | qla2x00_process_response_queue_in_zio_mode(vis_ha); | |
4319 | ||
4320 | } | |
4321 | } | |
4322 | ||
4323 | /* XXX(hch): crude hack to emulate a down_timeout() */ | |
4324 | int | |
4325 | qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout) | |
4326 | { | |
4327 | const unsigned int step = HZ/10; | |
4328 | ||
4329 | do { | |
4330 | if (!down_trylock(sema)) | |
4331 | return 0; | |
4332 | set_current_state(TASK_INTERRUPTIBLE); | |
4333 | if (schedule_timeout(step)) | |
4334 | break; | |
4335 | } while ((timeout -= step) > 0); | |
4336 | ||
4337 | return -ETIMEDOUT; | |
4338 | } | |
4339 | ||
4340 | static void | |
4341 | qla2xxx_get_port_id(struct scsi_target *starget) | |
4342 | { | |
4343 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
4344 | scsi_qla_host_t *ha = to_qla_host(shost); | |
4345 | struct fc_port *fc; | |
4346 | ||
4347 | list_for_each_entry(fc, &ha->fcports, list) { | |
4348 | if (fc->os_target_id == starget->id) { | |
4349 | fc_starget_port_id(starget) = fc->d_id.b.domain << 16 | | |
4350 | fc->d_id.b.area << 8 | | |
4351 | fc->d_id.b.al_pa; | |
4352 | return; | |
4353 | } | |
4354 | } | |
4355 | fc_starget_port_id(starget) = -1; | |
4356 | } | |
4357 | ||
4358 | static void | |
4359 | qla2xxx_get_port_name(struct scsi_target *starget) | |
4360 | { | |
4361 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
4362 | scsi_qla_host_t *ha = to_qla_host(shost); | |
4363 | struct fc_port *fc; | |
4364 | ||
4365 | list_for_each_entry(fc, &ha->fcports, list) { | |
4366 | if (fc->os_target_id == starget->id) { | |
4367 | fc_starget_port_name(starget) = | |
4368 | __be64_to_cpu(*(uint64_t *)fc->port_name); | |
4369 | return; | |
4370 | } | |
4371 | } | |
4372 | fc_starget_port_name(starget) = -1; | |
4373 | } | |
4374 | ||
4375 | static void | |
4376 | qla2xxx_get_node_name(struct scsi_target *starget) | |
4377 | { | |
4378 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
4379 | scsi_qla_host_t *ha = to_qla_host(shost); | |
4380 | struct fc_port *fc; | |
4381 | ||
4382 | list_for_each_entry(fc, &ha->fcports, list) { | |
4383 | if (fc->os_target_id == starget->id) { | |
4384 | fc_starget_node_name(starget) = | |
4385 | __be64_to_cpu(*(uint64_t *)fc->node_name); | |
4386 | return; | |
4387 | } | |
4388 | } | |
4389 | fc_starget_node_name(starget) = -1; | |
4390 | } | |
4391 | ||
4392 | static struct fc_function_template qla2xxx_transport_functions = { | |
4393 | .get_starget_port_id = qla2xxx_get_port_id, | |
4394 | .show_starget_port_id = 1, | |
4395 | .get_starget_port_name = qla2xxx_get_port_name, | |
4396 | .show_starget_port_name = 1, | |
4397 | .get_starget_node_name = qla2xxx_get_node_name, | |
4398 | .show_starget_node_name = 1, | |
4399 | }; | |
4400 | ||
4401 | /** | |
4402 | * qla2x00_module_init - Module initialization. | |
4403 | **/ | |
4404 | static int __init | |
4405 | qla2x00_module_init(void) | |
4406 | { | |
4407 | /* Allocate cache for SRBs. */ | |
4408 | sprintf(srb_cachep_name, "qla2xxx_srbs"); | |
4409 | srb_cachep = kmem_cache_create(srb_cachep_name, sizeof(srb_t), 0, | |
4410 | SLAB_HWCACHE_ALIGN, NULL, NULL); | |
4411 | if (srb_cachep == NULL) { | |
4412 | printk(KERN_ERR | |
4413 | "qla2xxx: Unable to allocate SRB cache...Failing load!\n"); | |
4414 | return -ENOMEM; | |
4415 | } | |
4416 | ||
4417 | /* Derive version string. */ | |
4418 | strcpy(qla2x00_version_str, QLA2XXX_VERSION); | |
4419 | #if DEBUG_QLA2100 | |
4420 | strcat(qla2x00_version_str, "-debug"); | |
4421 | #endif | |
4422 | ||
4423 | qla2xxx_transport_template = fc_attach_transport(&qla2xxx_transport_functions); | |
4424 | if (!qla2xxx_transport_template) | |
4425 | return -ENODEV; | |
4426 | ||
4427 | printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n"); | |
4428 | return 0; | |
4429 | } | |
4430 | ||
4431 | /** | |
4432 | * qla2x00_module_exit - Module cleanup. | |
4433 | **/ | |
4434 | static void __exit | |
4435 | qla2x00_module_exit(void) | |
4436 | { | |
4437 | /* Free SRBs cache. */ | |
4438 | if (srb_cachep != NULL) { | |
4439 | if (kmem_cache_destroy(srb_cachep) != 0) { | |
4440 | printk(KERN_ERR | |
4441 | "qla2xxx: Unable to free SRB cache...Memory pools " | |
4442 | "still active?\n"); | |
4443 | } | |
4444 | srb_cachep = NULL; | |
4445 | } | |
4446 | ||
4447 | fc_release_transport(qla2xxx_transport_template); | |
4448 | } | |
4449 | ||
4450 | module_init(qla2x00_module_init); | |
4451 | module_exit(qla2x00_module_exit); | |
4452 | ||
4453 | MODULE_AUTHOR("QLogic Corporation"); | |
4454 | MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver"); | |
4455 | MODULE_LICENSE("GPL"); | |
4456 | MODULE_VERSION(QLA2XXX_VERSION); |