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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 | /** | |
22 | * IO descriptor handle definitions. | |
23 | * | |
24 | * Signature form: | |
25 | * | |
26 | * |31------28|27-------------------12|11-------0| | |
27 | * | Type | Rolling Signature | Index | | |
28 | * |----------|-----------------------|----------| | |
29 | * | |
30 | **/ | |
31 | ||
32 | #define HDL_TYPE_SCSI 0 | |
33 | #define HDL_TYPE_ASYNC_IOCB 0x0A | |
34 | ||
35 | #define HDL_INDEX_BITS 12 | |
36 | #define HDL_ITER_BITS 16 | |
37 | #define HDL_TYPE_BITS 4 | |
38 | ||
39 | #define HDL_INDEX_MASK ((1UL << HDL_INDEX_BITS) - 1) | |
40 | #define HDL_ITER_MASK ((1UL << HDL_ITER_BITS) - 1) | |
41 | #define HDL_TYPE_MASK ((1UL << HDL_TYPE_BITS) - 1) | |
42 | ||
43 | #define HDL_INDEX_SHIFT 0 | |
44 | #define HDL_ITER_SHIFT (HDL_INDEX_SHIFT + HDL_INDEX_BITS) | |
45 | #define HDL_TYPE_SHIFT (HDL_ITER_SHIFT + HDL_ITER_BITS) | |
46 | ||
47 | /* Local Prototypes. */ | |
48 | static inline uint32_t qla2x00_to_handle(uint16_t, uint16_t, uint16_t); | |
49 | static inline uint16_t qla2x00_handle_to_idx(uint32_t); | |
50 | static inline uint32_t qla2x00_iodesc_to_handle(struct io_descriptor *); | |
51 | static inline struct io_descriptor *qla2x00_handle_to_iodesc(scsi_qla_host_t *, | |
52 | uint32_t); | |
53 | ||
54 | static inline struct io_descriptor *qla2x00_alloc_iodesc(scsi_qla_host_t *); | |
55 | static inline void qla2x00_free_iodesc(struct io_descriptor *); | |
56 | static inline void qla2x00_init_io_descriptors(scsi_qla_host_t *); | |
57 | ||
58 | static void qla2x00_iodesc_timeout(unsigned long); | |
59 | static inline void qla2x00_add_iodesc_timer(struct io_descriptor *); | |
60 | static inline void qla2x00_remove_iodesc_timer(struct io_descriptor *); | |
61 | ||
62 | static inline void qla2x00_update_login_fcport(scsi_qla_host_t *, | |
63 | struct mbx_entry *, fc_port_t *); | |
64 | ||
65 | static int qla2x00_send_abort_iocb(scsi_qla_host_t *, struct io_descriptor *, | |
66 | uint32_t, int); | |
67 | static int qla2x00_send_abort_iocb_cb(scsi_qla_host_t *, struct io_descriptor *, | |
68 | struct mbx_entry *); | |
69 | ||
70 | static int qla2x00_send_adisc_iocb(scsi_qla_host_t *, struct io_descriptor *, | |
71 | int); | |
72 | static int qla2x00_send_adisc_iocb_cb(scsi_qla_host_t *, struct io_descriptor *, | |
73 | struct mbx_entry *); | |
74 | ||
75 | static int qla2x00_send_logout_iocb(scsi_qla_host_t *, struct io_descriptor *, | |
76 | int); | |
77 | static int qla2x00_send_logout_iocb_cb(scsi_qla_host_t *, | |
78 | struct io_descriptor *, struct mbx_entry *); | |
79 | ||
80 | static int qla2x00_send_login_iocb(scsi_qla_host_t *, struct io_descriptor *, | |
81 | port_id_t *, int); | |
82 | static int qla2x00_send_login_iocb_cb(scsi_qla_host_t *, struct io_descriptor *, | |
83 | struct mbx_entry *); | |
84 | ||
85 | /** | |
86 | * Mailbox IOCB callback array. | |
87 | **/ | |
88 | static int (*iocb_function_cb_list[LAST_IOCB_CB]) | |
89 | (scsi_qla_host_t *, struct io_descriptor *, struct mbx_entry *) = { | |
90 | ||
91 | qla2x00_send_abort_iocb_cb, | |
92 | qla2x00_send_adisc_iocb_cb, | |
93 | qla2x00_send_logout_iocb_cb, | |
94 | qla2x00_send_login_iocb_cb, | |
95 | }; | |
96 | ||
97 | ||
98 | /** | |
99 | * Generic IO descriptor handle routines. | |
100 | **/ | |
101 | ||
102 | /** | |
103 | * qla2x00_to_handle() - Create a descriptor handle. | |
104 | * @type: descriptor type | |
105 | * @iter: descriptor rolling signature | |
106 | * @idx: index to the descriptor array | |
107 | * | |
108 | * Returns a composite handle based in the @type, @iter, and @idx. | |
109 | */ | |
110 | static inline uint32_t | |
111 | qla2x00_to_handle(uint16_t type, uint16_t iter, uint16_t idx) | |
112 | { | |
113 | return ((uint32_t)(((uint32_t)type << HDL_TYPE_SHIFT) | | |
114 | ((uint32_t)iter << HDL_ITER_SHIFT) | | |
115 | ((uint32_t)idx << HDL_INDEX_SHIFT))); | |
116 | } | |
117 | ||
118 | /** | |
119 | * qla2x00_handle_to_idx() - Retrive the index for a given handle. | |
120 | * @handle: descriptor handle | |
121 | * | |
122 | * Returns the index specified by the @handle. | |
123 | */ | |
124 | static inline uint16_t | |
125 | qla2x00_handle_to_idx(uint32_t handle) | |
126 | { | |
127 | return ((uint16_t)(((handle) >> HDL_INDEX_SHIFT) & HDL_INDEX_MASK)); | |
128 | } | |
129 | ||
130 | /** | |
131 | * qla2x00_iodesc_to_handle() - Convert an IO descriptor to a unique handle. | |
132 | * @iodesc: io descriptor | |
133 | * | |
134 | * Returns a unique handle for @iodesc. | |
135 | */ | |
136 | static inline uint32_t | |
137 | qla2x00_iodesc_to_handle(struct io_descriptor *iodesc) | |
138 | { | |
139 | uint32_t handle; | |
140 | ||
141 | handle = qla2x00_to_handle(HDL_TYPE_ASYNC_IOCB, | |
142 | ++iodesc->ha->iodesc_signature, iodesc->idx); | |
143 | iodesc->signature = handle; | |
144 | ||
145 | return (handle); | |
146 | } | |
147 | ||
148 | /** | |
149 | * qla2x00_handle_to_iodesc() - Retrieve an IO descriptor given a unique handle. | |
150 | * @ha: HA context | |
151 | * @handle: handle to io descriptor | |
152 | * | |
153 | * Returns a pointer to the io descriptor, or NULL, if the io descriptor does | |
154 | * not exist or the io descriptors signature does not @handle. | |
155 | */ | |
156 | static inline struct io_descriptor * | |
157 | qla2x00_handle_to_iodesc(scsi_qla_host_t *ha, uint32_t handle) | |
158 | { | |
159 | uint16_t idx; | |
160 | struct io_descriptor *iodesc; | |
161 | ||
162 | idx = qla2x00_handle_to_idx(handle); | |
163 | iodesc = &ha->io_descriptors[idx]; | |
164 | if (iodesc) | |
165 | if (iodesc->signature != handle) | |
166 | iodesc = NULL; | |
167 | ||
168 | return (iodesc); | |
169 | } | |
170 | ||
171 | ||
172 | /** | |
173 | * IO descriptor allocation routines. | |
174 | **/ | |
175 | ||
176 | /** | |
177 | * qla2x00_alloc_iodesc() - Allocate an IO descriptor from the pool. | |
178 | * @ha: HA context | |
179 | * | |
180 | * Returns a pointer to the allocated io descriptor, or NULL, if none available. | |
181 | */ | |
182 | static inline struct io_descriptor * | |
183 | qla2x00_alloc_iodesc(scsi_qla_host_t *ha) | |
184 | { | |
185 | uint16_t iter; | |
186 | struct io_descriptor *iodesc; | |
187 | ||
188 | iodesc = NULL; | |
189 | for (iter = 0; iter < MAX_IO_DESCRIPTORS; iter++) { | |
190 | if (ha->io_descriptors[iter].used) | |
191 | continue; | |
192 | ||
193 | iodesc = &ha->io_descriptors[iter]; | |
194 | iodesc->used = 1; | |
195 | iodesc->idx = iter; | |
196 | init_timer(&iodesc->timer); | |
197 | iodesc->ha = ha; | |
198 | iodesc->signature = qla2x00_iodesc_to_handle(iodesc); | |
199 | break; | |
200 | } | |
201 | ||
202 | return (iodesc); | |
203 | } | |
204 | ||
205 | /** | |
206 | * qla2x00_free_iodesc() - Free an IO descriptor. | |
207 | * @iodesc: io descriptor | |
208 | * | |
209 | * NOTE: The io descriptors timer *must* be stopped before it can be free'd. | |
210 | */ | |
211 | static inline void | |
212 | qla2x00_free_iodesc(struct io_descriptor *iodesc) | |
213 | { | |
214 | iodesc->used = 0; | |
215 | iodesc->signature = 0; | |
216 | } | |
217 | ||
218 | /** | |
219 | * qla2x00_remove_iodesc_timer() - Remove an active timer from an IO descriptor. | |
220 | * @iodesc: io descriptor | |
221 | */ | |
222 | static inline void | |
223 | qla2x00_remove_iodesc_timer(struct io_descriptor *iodesc) | |
224 | { | |
225 | if (iodesc->timer.function != NULL) { | |
226 | del_timer_sync(&iodesc->timer); | |
227 | iodesc->timer.data = (unsigned long) NULL; | |
228 | iodesc->timer.function = NULL; | |
229 | } | |
230 | } | |
231 | ||
232 | /** | |
233 | * qla2x00_init_io_descriptors() - Initialize the pool of IO descriptors. | |
234 | * @ha: HA context | |
235 | */ | |
236 | static inline void | |
237 | qla2x00_init_io_descriptors(scsi_qla_host_t *ha) | |
238 | { | |
239 | uint16_t iter; | |
240 | ||
241 | for (iter = 0; iter < MAX_IO_DESCRIPTORS; iter++) { | |
242 | if (!ha->io_descriptors[iter].used) | |
243 | continue; | |
244 | ||
245 | qla2x00_remove_iodesc_timer(&ha->io_descriptors[iter]); | |
246 | qla2x00_free_iodesc(&ha->io_descriptors[iter]); | |
247 | } | |
248 | } | |
249 | ||
250 | ||
251 | /** | |
252 | * IO descriptor timer routines. | |
253 | **/ | |
254 | ||
255 | /** | |
256 | * qla2x00_iodesc_timeout() - Timeout IO descriptor handler. | |
257 | * @data: io descriptor | |
258 | */ | |
259 | static void | |
260 | qla2x00_iodesc_timeout(unsigned long data) | |
261 | { | |
262 | struct io_descriptor *iodesc; | |
263 | ||
264 | iodesc = (struct io_descriptor *) data; | |
265 | ||
266 | DEBUG14(printk("scsi(%ld): IO descriptor timeout, index=%x " | |
267 | "signature=%08x, scheduling ISP abort.\n", iodesc->ha->host_no, | |
268 | iodesc->idx, iodesc->signature)); | |
269 | ||
270 | qla2x00_free_iodesc(iodesc); | |
271 | ||
272 | qla_printk(KERN_WARNING, iodesc->ha, | |
273 | "IO descriptor timeout. Scheduling ISP abort.\n"); | |
274 | set_bit(ISP_ABORT_NEEDED, &iodesc->ha->dpc_flags); | |
275 | } | |
276 | ||
277 | /** | |
278 | * qla2x00_add_iodesc_timer() - Add and start a timer for an IO descriptor. | |
279 | * @iodesc: io descriptor | |
280 | * | |
281 | * NOTE: | |
282 | * The firmware shall timeout an outstanding mailbox IOCB in 2 * R_A_TOV (in | |
283 | * tenths of a second) after it hits the wire. But, if there are any request | |
284 | * resource contraints (i.e. during heavy I/O), exchanges can be held off for | |
285 | * at most R_A_TOV. Therefore, the driver will wait 4 * R_A_TOV before | |
286 | * scheduling a recovery (big hammer). | |
287 | */ | |
288 | static inline void | |
289 | qla2x00_add_iodesc_timer(struct io_descriptor *iodesc) | |
290 | { | |
291 | unsigned long timeout; | |
292 | ||
293 | timeout = (iodesc->ha->r_a_tov * 4) / 10; | |
294 | init_timer(&iodesc->timer); | |
295 | iodesc->timer.data = (unsigned long) iodesc; | |
296 | iodesc->timer.expires = jiffies + (timeout * HZ); | |
297 | iodesc->timer.function = | |
298 | (void (*) (unsigned long)) qla2x00_iodesc_timeout; | |
299 | add_timer(&iodesc->timer); | |
300 | } | |
301 | ||
302 | /** | |
303 | * IO descriptor support routines. | |
304 | **/ | |
305 | ||
306 | /** | |
307 | * qla2x00_update_login_fcport() - Update fcport data after login processing. | |
308 | * @ha: HA context | |
309 | * @mbxstat: Mailbox command status IOCB | |
310 | * @fcport: port to update | |
311 | */ | |
312 | static inline void | |
313 | qla2x00_update_login_fcport(scsi_qla_host_t *ha, struct mbx_entry *mbxstat, | |
314 | fc_port_t *fcport) | |
315 | { | |
316 | if (le16_to_cpu(mbxstat->mb1) & BIT_0) { | |
317 | fcport->port_type = FCT_INITIATOR; | |
318 | } else { | |
319 | fcport->port_type = FCT_TARGET; | |
320 | if (le16_to_cpu(mbxstat->mb1) & BIT_1) { | |
321 | fcport->flags |= FCF_TAPE_PRESENT; | |
322 | } | |
323 | } | |
324 | fcport->login_retry = 0; | |
325 | fcport->port_login_retry_count = ha->port_down_retry_count * | |
326 | PORT_RETRY_TIME; | |
327 | atomic_set(&fcport->port_down_timer, ha->port_down_retry_count * | |
328 | PORT_RETRY_TIME); | |
329 | fcport->flags |= FCF_FABRIC_DEVICE; | |
330 | fcport->flags &= ~FCF_FAILOVER_NEEDED; | |
331 | fcport->iodesc_idx_sent = IODESC_INVALID_INDEX; | |
332 | atomic_set(&fcport->state, FCS_ONLINE); | |
333 | } | |
334 | ||
335 | ||
336 | /** | |
337 | * Mailbox IOCB commands. | |
338 | **/ | |
339 | ||
340 | /** | |
341 | * qla2x00_get_mbx_iocb_entry() - Retrieve an IOCB from the request queue. | |
342 | * @ha: HA context | |
343 | * @handle: handle to io descriptor | |
344 | * | |
345 | * Returns a pointer to the reqest entry, or NULL, if none were available. | |
346 | */ | |
347 | static inline struct mbx_entry * | |
348 | qla2x00_get_mbx_iocb_entry(scsi_qla_host_t *ha, uint32_t handle) | |
349 | { | |
350 | uint16_t cnt; | |
351 | device_reg_t __iomem *reg = ha->iobase; | |
352 | struct mbx_entry *mbxentry; | |
353 | ||
354 | mbxentry = NULL; | |
355 | ||
356 | if (ha->req_q_cnt < 3) { | |
357 | cnt = qla2x00_debounce_register(ISP_REQ_Q_OUT(ha, reg)); | |
358 | if (ha->req_ring_index < cnt) | |
359 | ha->req_q_cnt = cnt - ha->req_ring_index; | |
360 | else | |
361 | ha->req_q_cnt = ha->request_q_length - | |
362 | (ha->req_ring_index - cnt); | |
363 | } | |
364 | if (ha->req_q_cnt >= 3) { | |
365 | mbxentry = (struct mbx_entry *)ha->request_ring_ptr; | |
366 | ||
367 | memset(mbxentry, 0, sizeof(struct mbx_entry)); | |
368 | mbxentry->entry_type = MBX_IOCB_TYPE; | |
369 | mbxentry->entry_count = 1; | |
370 | mbxentry->sys_define1 = SOURCE_ASYNC_IOCB; | |
371 | mbxentry->handle = handle; | |
372 | } | |
373 | return (mbxentry); | |
374 | } | |
375 | ||
376 | /** | |
377 | * qla2x00_send_abort_iocb() - Issue an abort IOCB to the firmware. | |
378 | * @ha: HA context | |
379 | * @iodesc: io descriptor | |
380 | * @handle_to_abort: firmware handle to abort | |
381 | * @ha_locked: is function called with the hardware lock | |
382 | * | |
383 | * Returns QLA_SUCCESS if the IOCB was issued. | |
384 | */ | |
385 | static int | |
386 | qla2x00_send_abort_iocb(scsi_qla_host_t *ha, struct io_descriptor *iodesc, | |
387 | uint32_t handle_to_abort, int ha_locked) | |
388 | { | |
389 | unsigned long flags = 0; | |
390 | struct mbx_entry *mbxentry; | |
391 | ||
392 | /* Send marker if required. */ | |
393 | if (qla2x00_issue_marker(ha, ha_locked) != QLA_SUCCESS) | |
394 | return (QLA_FUNCTION_FAILED); | |
395 | ||
396 | if (!ha_locked) | |
397 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
398 | ||
399 | /* Build abort mailbox IOCB. */ | |
400 | mbxentry = qla2x00_get_mbx_iocb_entry(ha, iodesc->signature); | |
401 | if (mbxentry == NULL) { | |
402 | if (!ha_locked) | |
403 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
404 | ||
405 | return (QLA_FUNCTION_FAILED); | |
406 | } | |
407 | mbxentry->mb0 = __constant_cpu_to_le16(MBC_ABORT_COMMAND); | |
408 | mbxentry->mb1 = mbxentry->loop_id.extended = | |
409 | cpu_to_le16(iodesc->remote_fcport->loop_id); | |
410 | mbxentry->mb2 = LSW(handle_to_abort); | |
411 | mbxentry->mb3 = MSW(handle_to_abort); | |
412 | wmb(); | |
413 | ||
414 | qla2x00_add_iodesc_timer(iodesc); | |
415 | ||
416 | /* Issue command to ISP. */ | |
417 | qla2x00_isp_cmd(ha); | |
418 | ||
419 | if (!ha_locked) | |
420 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
421 | ||
422 | DEBUG14(printk("scsi(%ld): Sending Abort IOCB (%08x) to [%x], aborting " | |
423 | "%08x.\n", ha->host_no, iodesc->signature, | |
424 | iodesc->remote_fcport->loop_id, handle_to_abort)); | |
425 | ||
426 | return (QLA_SUCCESS); | |
427 | } | |
428 | ||
429 | /** | |
430 | * qla2x00_send_abort_iocb_cb() - Abort IOCB callback. | |
431 | * @ha: HA context | |
432 | * @iodesc: io descriptor | |
433 | * @mbxstat: mailbox status IOCB | |
434 | * | |
435 | * Returns QLA_SUCCESS if @iodesc can be freed by the caller, else, @iodesc | |
436 | * will be used for a retry. | |
437 | */ | |
438 | static int | |
439 | qla2x00_send_abort_iocb_cb(scsi_qla_host_t *ha, struct io_descriptor *iodesc, | |
440 | struct mbx_entry *mbxstat) | |
441 | { | |
442 | DEBUG14(printk("scsi(%ld): Abort IOCB -- sent to [%x/%02x%02x%02x], " | |
443 | "status=%x mb0=%x.\n", ha->host_no, iodesc->remote_fcport->loop_id, | |
444 | iodesc->d_id.b.domain, iodesc->d_id.b.area, iodesc->d_id.b.al_pa, | |
445 | le16_to_cpu(mbxstat->status), le16_to_cpu(mbxstat->mb0))); | |
446 | ||
447 | return (QLA_SUCCESS); | |
448 | } | |
449 | ||
450 | ||
451 | /** | |
452 | * qla2x00_send_adisc_iocb() - Issue a Get Port Database IOCB to the firmware. | |
453 | * @ha: HA context | |
454 | * @iodesc: io descriptor | |
455 | * @ha_locked: is function called with the hardware lock | |
456 | * | |
457 | * Returns QLA_SUCCESS if the IOCB was issued. | |
458 | */ | |
459 | static int | |
460 | qla2x00_send_adisc_iocb(scsi_qla_host_t *ha, struct io_descriptor *iodesc, | |
461 | int ha_locked) | |
462 | { | |
463 | unsigned long flags = 0; | |
464 | struct mbx_entry *mbxentry; | |
465 | ||
466 | /* Send marker if required. */ | |
467 | if (qla2x00_issue_marker(ha, ha_locked) != QLA_SUCCESS) | |
468 | return (QLA_FUNCTION_FAILED); | |
469 | ||
470 | if (!ha_locked) | |
471 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
472 | ||
473 | /* Build Get Port Database IOCB. */ | |
474 | mbxentry = qla2x00_get_mbx_iocb_entry(ha, iodesc->signature); | |
475 | if (mbxentry == NULL) { | |
476 | if (!ha_locked) | |
477 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
478 | ||
479 | return (QLA_FUNCTION_FAILED); | |
480 | } | |
481 | mbxentry->mb0 = __constant_cpu_to_le16(MBC_GET_PORT_DATABASE); | |
482 | mbxentry->mb1 = mbxentry->loop_id.extended = | |
483 | cpu_to_le16(iodesc->remote_fcport->loop_id); | |
484 | mbxentry->mb2 = cpu_to_le16(MSW(LSD(ha->iodesc_pd_dma))); | |
485 | mbxentry->mb3 = cpu_to_le16(LSW(LSD(ha->iodesc_pd_dma))); | |
486 | mbxentry->mb6 = cpu_to_le16(MSW(MSD(ha->iodesc_pd_dma))); | |
487 | mbxentry->mb7 = cpu_to_le16(LSW(MSD(ha->iodesc_pd_dma))); | |
488 | mbxentry->mb10 = __constant_cpu_to_le16(BIT_0); | |
489 | wmb(); | |
490 | ||
491 | qla2x00_add_iodesc_timer(iodesc); | |
492 | ||
493 | /* Issue command to ISP. */ | |
494 | qla2x00_isp_cmd(ha); | |
495 | ||
496 | if (!ha_locked) | |
497 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
498 | ||
499 | DEBUG14(printk("scsi(%ld): Sending Adisc IOCB (%08x) to [%x].\n", | |
500 | ha->host_no, iodesc->signature, iodesc->remote_fcport->loop_id)); | |
501 | ||
502 | return (QLA_SUCCESS); | |
503 | } | |
504 | ||
505 | /** | |
506 | * qla2x00_send_adisc_iocb_cb() - Get Port Database IOCB callback. | |
507 | * @ha: HA context | |
508 | * @iodesc: io descriptor | |
509 | * @mbxstat: mailbox status IOCB | |
510 | * | |
511 | * Returns QLA_SUCCESS if @iodesc can be freed by the caller, else, @iodesc | |
512 | * will be used for a retry. | |
513 | */ | |
514 | static int | |
515 | qla2x00_send_adisc_iocb_cb(scsi_qla_host_t *ha, struct io_descriptor *iodesc, | |
516 | struct mbx_entry *mbxstat) | |
517 | { | |
518 | fc_port_t *remote_fcport; | |
519 | ||
520 | remote_fcport = iodesc->remote_fcport; | |
521 | ||
522 | /* Ensure the port IDs are consistent. */ | |
523 | if (remote_fcport->d_id.b24 != iodesc->d_id.b24) { | |
524 | DEBUG14(printk("scsi(%ld): Adisc IOCB -- ignoring, remote port " | |
525 | "id changed from [%02x%02x%02x] to [%02x%02x%02x].\n", | |
526 | ha->host_no, remote_fcport->d_id.b.domain, | |
527 | remote_fcport->d_id.b.area, remote_fcport->d_id.b.al_pa, | |
528 | iodesc->d_id.b.domain, iodesc->d_id.b.area, | |
529 | iodesc->d_id.b.al_pa)); | |
530 | ||
531 | return (QLA_SUCCESS); | |
532 | } | |
533 | ||
534 | /* Only process the last command. */ | |
535 | if (remote_fcport->iodesc_idx_sent != iodesc->idx) { | |
536 | DEBUG14(printk("scsi(%ld): Adisc IOCB -- ignoring, sent to " | |
537 | "[%02x%02x%02x], expected %x, received %x.\n", ha->host_no, | |
538 | iodesc->d_id.b.domain, iodesc->d_id.b.area, | |
539 | iodesc->d_id.b.al_pa, remote_fcport->iodesc_idx_sent, | |
540 | iodesc->idx)); | |
541 | ||
542 | return (QLA_SUCCESS); | |
543 | } | |
544 | ||
545 | if (le16_to_cpu(mbxstat->status) == CS_COMPLETE) { | |
546 | DEBUG14(printk("scsi(%ld): Adisc IOCB -- marking " | |
547 | "[%x/%02x%02x%02x] online.\n", ha->host_no, | |
548 | remote_fcport->loop_id, remote_fcport->d_id.b.domain, | |
549 | remote_fcport->d_id.b.area, remote_fcport->d_id.b.al_pa)); | |
550 | ||
551 | atomic_set(&remote_fcport->state, FCS_ONLINE); | |
552 | } else { | |
553 | DEBUG14(printk("scsi(%ld): Adisc IOCB -- marking " | |
554 | "[%x/%02x%02x%02x] lost, status=%x mb0=%x.\n", ha->host_no, | |
555 | remote_fcport->loop_id, remote_fcport->d_id.b.domain, | |
556 | remote_fcport->d_id.b.area, remote_fcport->d_id.b.al_pa, | |
557 | le16_to_cpu(mbxstat->status), le16_to_cpu(mbxstat->mb0))); | |
558 | ||
559 | if (atomic_read(&remote_fcport->state) != FCS_DEVICE_DEAD) | |
560 | atomic_set(&remote_fcport->state, FCS_DEVICE_LOST); | |
561 | } | |
562 | remote_fcport->iodesc_idx_sent = IODESC_INVALID_INDEX; | |
563 | ||
564 | return (QLA_SUCCESS); | |
565 | } | |
566 | ||
567 | ||
568 | /** | |
569 | * qla2x00_send_logout_iocb() - Issue a fabric port logout IOCB to the firmware. | |
570 | * @ha: HA context | |
571 | * @iodesc: io descriptor | |
572 | * @ha_locked: is function called with the hardware lock | |
573 | * | |
574 | * Returns QLA_SUCCESS if the IOCB was issued. | |
575 | */ | |
576 | static int | |
577 | qla2x00_send_logout_iocb(scsi_qla_host_t *ha, struct io_descriptor *iodesc, | |
578 | int ha_locked) | |
579 | { | |
580 | unsigned long flags = 0; | |
581 | struct mbx_entry *mbxentry; | |
582 | ||
583 | /* Send marker if required. */ | |
584 | if (qla2x00_issue_marker(ha, ha_locked) != QLA_SUCCESS) | |
585 | return (QLA_FUNCTION_FAILED); | |
586 | ||
587 | if (!ha_locked) | |
588 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
589 | ||
590 | /* Build fabric port logout mailbox IOCB. */ | |
591 | mbxentry = qla2x00_get_mbx_iocb_entry(ha, iodesc->signature); | |
592 | if (mbxentry == NULL) { | |
593 | if (!ha_locked) | |
594 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
595 | ||
596 | return (QLA_FUNCTION_FAILED); | |
597 | } | |
598 | mbxentry->mb0 = __constant_cpu_to_le16(MBC_LOGOUT_FABRIC_PORT); | |
599 | mbxentry->mb1 = mbxentry->loop_id.extended = | |
600 | cpu_to_le16(iodesc->remote_fcport->loop_id); | |
601 | wmb(); | |
602 | ||
603 | qla2x00_add_iodesc_timer(iodesc); | |
604 | ||
605 | /* Issue command to ISP. */ | |
606 | qla2x00_isp_cmd(ha); | |
607 | ||
608 | if (!ha_locked) | |
609 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
610 | ||
611 | DEBUG14(printk("scsi(%ld): Sending Logout IOCB (%08x) to [%x].\n", | |
612 | ha->host_no, iodesc->signature, iodesc->remote_fcport->loop_id)); | |
613 | ||
614 | return (QLA_SUCCESS); | |
615 | } | |
616 | ||
617 | /** | |
618 | * qla2x00_send_logout_iocb_cb() - Fabric port logout IOCB callback. | |
619 | * @ha: HA context | |
620 | * @iodesc: io descriptor | |
621 | * @mbxstat: mailbox status IOCB | |
622 | * | |
623 | * Returns QLA_SUCCESS if @iodesc can be freed by the caller, else, @iodesc | |
624 | * will be used for a retry. | |
625 | */ | |
626 | static int | |
627 | qla2x00_send_logout_iocb_cb(scsi_qla_host_t *ha, struct io_descriptor *iodesc, | |
628 | struct mbx_entry *mbxstat) | |
629 | { | |
630 | DEBUG14(printk("scsi(%ld): Logout IOCB -- sent to [%x/%02x%02x%02x], " | |
631 | "status=%x mb0=%x mb1=%x.\n", ha->host_no, | |
632 | iodesc->remote_fcport->loop_id, | |
633 | iodesc->remote_fcport->d_id.b.domain, | |
634 | iodesc->remote_fcport->d_id.b.area, | |
635 | iodesc->remote_fcport->d_id.b.al_pa, le16_to_cpu(mbxstat->status), | |
636 | le16_to_cpu(mbxstat->mb0), le16_to_cpu(mbxstat->mb1))); | |
637 | ||
638 | return (QLA_SUCCESS); | |
639 | } | |
640 | ||
641 | ||
642 | /** | |
643 | * qla2x00_send_login_iocb() - Issue a fabric port login IOCB to the firmware. | |
644 | * @ha: HA context | |
645 | * @iodesc: io descriptor | |
646 | * @d_id: port id for device | |
647 | * @ha_locked: is function called with the hardware lock | |
648 | * | |
649 | * Returns QLA_SUCCESS if the IOCB was issued. | |
650 | */ | |
651 | static int | |
652 | qla2x00_send_login_iocb(scsi_qla_host_t *ha, struct io_descriptor *iodesc, | |
653 | port_id_t *d_id, int ha_locked) | |
654 | { | |
655 | unsigned long flags = 0; | |
656 | struct mbx_entry *mbxentry; | |
657 | ||
658 | /* Send marker if required. */ | |
659 | if (qla2x00_issue_marker(ha, ha_locked) != QLA_SUCCESS) | |
660 | return (QLA_FUNCTION_FAILED); | |
661 | ||
662 | if (!ha_locked) | |
663 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
664 | ||
665 | /* Build fabric port login mailbox IOCB. */ | |
666 | mbxentry = qla2x00_get_mbx_iocb_entry(ha, iodesc->signature); | |
667 | if (mbxentry == NULL) { | |
668 | if (!ha_locked) | |
669 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
670 | ||
671 | return (QLA_FUNCTION_FAILED); | |
672 | } | |
673 | mbxentry->mb0 = __constant_cpu_to_le16(MBC_LOGIN_FABRIC_PORT); | |
674 | mbxentry->mb1 = mbxentry->loop_id.extended = | |
675 | cpu_to_le16(iodesc->remote_fcport->loop_id); | |
676 | mbxentry->mb2 = cpu_to_le16(d_id->b.domain); | |
677 | mbxentry->mb3 = cpu_to_le16(d_id->b.area << 8 | d_id->b.al_pa); | |
678 | mbxentry->mb10 = __constant_cpu_to_le16(BIT_0); | |
679 | wmb(); | |
680 | ||
681 | qla2x00_add_iodesc_timer(iodesc); | |
682 | ||
683 | /* Issue command to ISP. */ | |
684 | qla2x00_isp_cmd(ha); | |
685 | ||
686 | if (!ha_locked) | |
687 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
688 | ||
689 | DEBUG14(printk("scsi(%ld): Sending Login IOCB (%08x) to " | |
690 | "[%x/%02x%02x%02x].\n", ha->host_no, iodesc->signature, | |
691 | iodesc->remote_fcport->loop_id, d_id->b.domain, d_id->b.area, | |
692 | d_id->b.al_pa)); | |
693 | ||
694 | return (QLA_SUCCESS); | |
695 | } | |
696 | ||
697 | /** | |
698 | * qla2x00_send_login_iocb_cb() - Fabric port logout IOCB callback. | |
699 | * @ha: HA context | |
700 | * @iodesc: io descriptor | |
701 | * @mbxstat: mailbox status IOCB | |
702 | * | |
703 | * Returns QLA_SUCCESS if @iodesc can be freed by the caller, else, @iodesc | |
704 | * will be used for a retry. | |
705 | */ | |
706 | static int | |
707 | qla2x00_send_login_iocb_cb(scsi_qla_host_t *ha, struct io_descriptor *iodesc, | |
708 | struct mbx_entry *mbxstat) | |
709 | { | |
710 | int rval; | |
711 | fc_port_t *fcport, *remote_fcport, *exist_fcport; | |
712 | struct io_descriptor *abort_iodesc, *login_iodesc; | |
713 | uint16_t status, mb[8]; | |
714 | uint16_t reuse; | |
715 | uint16_t remote_loopid; | |
716 | port_id_t remote_did, inuse_did; | |
717 | ||
718 | remote_fcport = iodesc->remote_fcport; | |
719 | ||
720 | /* Only process the last command. */ | |
721 | if (remote_fcport->iodesc_idx_sent != iodesc->idx) { | |
722 | DEBUG14(printk("scsi(%ld): Login IOCB -- ignoring, sent to " | |
723 | "[%02x%02x%02x], expected %x, received %x.\n", | |
724 | ha->host_no, iodesc->d_id.b.domain, iodesc->d_id.b.area, | |
725 | iodesc->d_id.b.al_pa, remote_fcport->iodesc_idx_sent, | |
726 | iodesc->idx)); | |
727 | ||
728 | /* Free RSCN fcport resources. */ | |
729 | if (remote_fcport->port_type == FCT_RSCN) { | |
730 | DEBUG14(printk("scsi(%ld): Login IOCB -- Freeing RSCN " | |
731 | "fcport %p [%x/%02x%02x%02x] given ignored Login " | |
732 | "IOCB.\n", ha->host_no, remote_fcport, | |
733 | remote_fcport->loop_id, | |
734 | remote_fcport->d_id.b.domain, | |
735 | remote_fcport->d_id.b.area, | |
736 | remote_fcport->d_id.b.al_pa)); | |
737 | ||
738 | list_del(&remote_fcport->list); | |
739 | kfree(remote_fcport); | |
740 | } | |
741 | return (QLA_SUCCESS); | |
742 | } | |
743 | ||
744 | status = le16_to_cpu(mbxstat->status); | |
745 | mb[0] = le16_to_cpu(mbxstat->mb0); | |
746 | mb[1] = le16_to_cpu(mbxstat->mb1); | |
747 | mb[2] = le16_to_cpu(mbxstat->mb2); | |
748 | mb[6] = le16_to_cpu(mbxstat->mb6); | |
749 | mb[7] = le16_to_cpu(mbxstat->mb7); | |
750 | ||
751 | /* Good status? */ | |
752 | if ((status == CS_COMPLETE || status == CS_COMPLETE_CHKCOND) && | |
753 | mb[0] == MBS_COMMAND_COMPLETE) { | |
754 | ||
755 | DEBUG14(printk("scsi(%ld): Login IOCB -- status=%x mb1=%x pn=" | |
756 | "%02x%02x%02x%02x%02x%02x%02x%02x.\n", ha->host_no, status, | |
757 | mb[1], mbxstat->port_name[0], mbxstat->port_name[1], | |
758 | mbxstat->port_name[2], mbxstat->port_name[3], | |
759 | mbxstat->port_name[4], mbxstat->port_name[5], | |
760 | mbxstat->port_name[6], mbxstat->port_name[7])); | |
761 | ||
762 | memcpy(remote_fcport->node_name, mbxstat->node_name, WWN_SIZE); | |
763 | memcpy(remote_fcport->port_name, mbxstat->port_name, WWN_SIZE); | |
764 | ||
765 | /* Is the device already in our fcports list? */ | |
766 | if (remote_fcport->port_type != FCT_RSCN) { | |
767 | DEBUG14(printk("scsi(%ld): Login IOCB -- marking " | |
768 | "[%x/%02x%02x%02x] online.\n", ha->host_no, | |
769 | remote_fcport->loop_id, | |
770 | remote_fcport->d_id.b.domain, | |
771 | remote_fcport->d_id.b.area, | |
772 | remote_fcport->d_id.b.al_pa)); | |
773 | ||
774 | qla2x00_update_login_fcport(ha, mbxstat, remote_fcport); | |
775 | ||
776 | return (QLA_SUCCESS); | |
777 | } | |
778 | ||
779 | /* Does the RSCN portname already exist in our fcports list? */ | |
780 | exist_fcport = NULL; | |
781 | list_for_each_entry(fcport, &ha->fcports, list) { | |
782 | if (memcmp(remote_fcport->port_name, fcport->port_name, | |
783 | WWN_SIZE) == 0) { | |
784 | exist_fcport = fcport; | |
785 | break; | |
786 | } | |
787 | } | |
788 | if (exist_fcport != NULL) { | |
789 | DEBUG14(printk("scsi(%ld): Login IOCB -- found RSCN " | |
790 | "fcport in fcports list [%p].\n", ha->host_no, | |
791 | exist_fcport)); | |
792 | ||
793 | /* Abort any ADISC that could have been sent. */ | |
794 | if (exist_fcport->iodesc_idx_sent != iodesc->idx && | |
795 | exist_fcport->iodesc_idx_sent < | |
796 | MAX_IO_DESCRIPTORS && | |
797 | ha->io_descriptors[exist_fcport->iodesc_idx_sent]. | |
798 | cb_idx == ADISC_PORT_IOCB_CB) { | |
799 | ||
800 | abort_iodesc = qla2x00_alloc_iodesc(ha); | |
801 | if (abort_iodesc) { | |
802 | DEBUG14(printk("scsi(%ld): Login IOCB " | |
803 | "-- issuing abort to outstanding " | |
804 | "Adisc [%x/%02x%02x%02x].\n", | |
805 | ha->host_no, remote_fcport->loop_id, | |
806 | exist_fcport->d_id.b.domain, | |
807 | exist_fcport->d_id.b.area, | |
808 | exist_fcport->d_id.b.al_pa)); | |
809 | ||
810 | abort_iodesc->cb_idx = ABORT_IOCB_CB; | |
811 | abort_iodesc->d_id.b24 = | |
812 | exist_fcport->d_id.b24; | |
813 | abort_iodesc->remote_fcport = | |
814 | exist_fcport; | |
815 | exist_fcport->iodesc_idx_sent = | |
816 | abort_iodesc->idx; | |
817 | qla2x00_send_abort_iocb(ha, | |
818 | abort_iodesc, ha->io_descriptors[ | |
819 | exist_fcport->iodesc_idx_sent]. | |
820 | signature, 1); | |
821 | } else { | |
822 | DEBUG14(printk("scsi(%ld): Login IOCB " | |
823 | "-- unable to abort outstanding " | |
824 | "Adisc [%x/%02x%02x%02x].\n", | |
825 | ha->host_no, remote_fcport->loop_id, | |
826 | exist_fcport->d_id.b.domain, | |
827 | exist_fcport->d_id.b.area, | |
828 | exist_fcport->d_id.b.al_pa)); | |
829 | } | |
830 | } | |
831 | ||
832 | /* | |
833 | * If the existing fcport is waiting to send an ADISC | |
834 | * or LOGIN, then reuse remote fcport (RSCN) to | |
835 | * continue waiting. | |
836 | */ | |
837 | reuse = 0; | |
838 | remote_loopid = remote_fcport->loop_id; | |
839 | remote_did.b24 = remote_fcport->d_id.b24; | |
840 | if (exist_fcport->iodesc_idx_sent == | |
841 | IODESC_ADISC_NEEDED || | |
842 | exist_fcport->iodesc_idx_sent == | |
843 | IODESC_LOGIN_NEEDED) { | |
844 | DEBUG14(printk("scsi(%ld): Login IOCB -- " | |
845 | "existing fcport [%x/%02x%02x%02x] " | |
846 | "waiting for IO descriptor, reuse RSCN " | |
847 | "fcport.\n", ha->host_no, | |
848 | exist_fcport->loop_id, | |
849 | exist_fcport->d_id.b.domain, | |
850 | exist_fcport->d_id.b.area, | |
851 | exist_fcport->d_id.b.al_pa)); | |
852 | ||
853 | reuse++; | |
854 | remote_fcport->iodesc_idx_sent = | |
855 | exist_fcport->iodesc_idx_sent; | |
856 | exist_fcport->iodesc_idx_sent = | |
857 | IODESC_INVALID_INDEX; | |
858 | remote_fcport->loop_id = exist_fcport->loop_id; | |
859 | remote_fcport->d_id.b24 = | |
860 | exist_fcport->d_id.b24; | |
861 | } | |
862 | ||
863 | /* Logout the old loopid. */ | |
864 | if (!reuse && | |
865 | exist_fcport->loop_id != remote_fcport->loop_id && | |
866 | exist_fcport->loop_id != FC_NO_LOOP_ID) { | |
867 | login_iodesc = qla2x00_alloc_iodesc(ha); | |
868 | if (login_iodesc) { | |
869 | DEBUG14(printk("scsi(%ld): Login IOCB " | |
870 | "-- issuing logout to free old " | |
871 | "loop id [%x/%02x%02x%02x].\n", | |
872 | ha->host_no, exist_fcport->loop_id, | |
873 | exist_fcport->d_id.b.domain, | |
874 | exist_fcport->d_id.b.area, | |
875 | exist_fcport->d_id.b.al_pa)); | |
876 | ||
877 | login_iodesc->cb_idx = | |
878 | LOGOUT_PORT_IOCB_CB; | |
879 | login_iodesc->d_id.b24 = | |
880 | exist_fcport->d_id.b24; | |
881 | login_iodesc->remote_fcport = | |
882 | exist_fcport; | |
883 | exist_fcport->iodesc_idx_sent = | |
884 | login_iodesc->idx; | |
885 | qla2x00_send_logout_iocb(ha, | |
886 | login_iodesc, 1); | |
887 | } else { | |
888 | /* Ran out of IO descriptiors. */ | |
889 | DEBUG14(printk("scsi(%ld): Login IOCB " | |
890 | "-- unable to logout to free old " | |
891 | "loop id [%x/%02x%02x%02x].\n", | |
892 | ha->host_no, exist_fcport->loop_id, | |
893 | exist_fcport->d_id.b.domain, | |
894 | exist_fcport->d_id.b.area, | |
895 | exist_fcport->d_id.b.al_pa)); | |
896 | ||
897 | exist_fcport->iodesc_idx_sent = | |
898 | IODESC_INVALID_INDEX; | |
899 | } | |
900 | ||
901 | } | |
902 | ||
903 | /* Update existing fcport with remote fcport info. */ | |
904 | DEBUG14(printk("scsi(%ld): Login IOCB -- marking " | |
905 | "existing fcport [%x/%02x%02x%02x] online.\n", | |
906 | ha->host_no, remote_loopid, remote_did.b.domain, | |
907 | remote_did.b.area, remote_did.b.al_pa)); | |
908 | ||
909 | memcpy(exist_fcport->node_name, | |
910 | remote_fcport->node_name, WWN_SIZE); | |
911 | exist_fcport->loop_id = remote_loopid; | |
912 | exist_fcport->d_id.b24 = remote_did.b24; | |
913 | qla2x00_update_login_fcport(ha, mbxstat, exist_fcport); | |
914 | ||
915 | /* Finally, free the remote (RSCN) fcport. */ | |
916 | if (!reuse) { | |
917 | DEBUG14(printk("scsi(%ld): Login IOCB -- " | |
918 | "Freeing RSCN fcport %p " | |
919 | "[%x/%02x%02x%02x].\n", ha->host_no, | |
920 | remote_fcport, remote_fcport->loop_id, | |
921 | remote_fcport->d_id.b.domain, | |
922 | remote_fcport->d_id.b.area, | |
923 | remote_fcport->d_id.b.al_pa)); | |
924 | ||
925 | list_del(&remote_fcport->list); | |
926 | kfree(remote_fcport); | |
927 | } | |
928 | ||
929 | return (QLA_SUCCESS); | |
930 | } | |
931 | ||
932 | /* | |
933 | * A new device has been added, move the RSCN fcport to our | |
934 | * fcports list. | |
935 | */ | |
936 | DEBUG14(printk("scsi(%ld): Login IOCB -- adding RSCN fcport " | |
937 | "[%x/%02x%02x%02x] to fcports list.\n", ha->host_no, | |
938 | remote_fcport->loop_id, remote_fcport->d_id.b.domain, | |
939 | remote_fcport->d_id.b.area, remote_fcport->d_id.b.al_pa)); | |
940 | ||
941 | list_del(&remote_fcport->list); | |
942 | remote_fcport->flags = (FCF_RLC_SUPPORT | FCF_RESCAN_NEEDED); | |
943 | qla2x00_update_login_fcport(ha, mbxstat, remote_fcport); | |
944 | list_add_tail(&remote_fcport->list, &ha->fcports); | |
945 | set_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags); | |
946 | } else { | |
947 | /* Handle login failure. */ | |
948 | if (remote_fcport->login_retry != 0) { | |
949 | if (mb[0] == MBS_LOOP_ID_USED) { | |
950 | inuse_did.b.domain = LSB(mb[1]); | |
951 | inuse_did.b.area = MSB(mb[2]); | |
952 | inuse_did.b.al_pa = LSB(mb[2]); | |
953 | ||
954 | DEBUG14(printk("scsi(%ld): Login IOCB -- loop " | |
955 | "id [%x] used by port id [%02x%02x%02x].\n", | |
956 | ha->host_no, remote_fcport->loop_id, | |
957 | inuse_did.b.domain, inuse_did.b.area, | |
958 | inuse_did.b.al_pa)); | |
959 | ||
960 | if (remote_fcport->d_id.b24 == | |
961 | INVALID_PORT_ID) { | |
962 | /* | |
963 | * Invalid port id means we are trying | |
964 | * to login to a remote port with just | |
965 | * a loop id without knowing about the | |
966 | * port id. Copy the port id and try | |
967 | * again. | |
968 | */ | |
969 | remote_fcport->d_id.b24 = inuse_did.b24; | |
970 | iodesc->d_id.b24 = inuse_did.b24; | |
971 | } else { | |
972 | remote_fcport->loop_id++; | |
973 | rval = qla2x00_find_new_loop_id(ha, | |
974 | remote_fcport); | |
975 | if (rval == QLA_FUNCTION_FAILED) { | |
976 | /* No more loop ids. */ | |
977 | return (QLA_SUCCESS); | |
978 | } | |
979 | } | |
980 | } else if (mb[0] == MBS_PORT_ID_USED) { | |
981 | /* | |
982 | * Device has another loop ID. The firmware | |
983 | * group recommends the driver perform an | |
984 | * implicit login with the specified ID. | |
985 | */ | |
986 | DEBUG14(printk("scsi(%ld): Login IOCB -- port " | |
987 | "id [%02x%02x%02x] already assigned to " | |
988 | "loop id [%x].\n", ha->host_no, | |
989 | iodesc->d_id.b.domain, iodesc->d_id.b.area, | |
990 | iodesc->d_id.b.al_pa, mb[1])); | |
991 | ||
992 | remote_fcport->loop_id = mb[1]; | |
993 | ||
994 | } else { | |
995 | /* Unable to perform login, try again. */ | |
996 | DEBUG14(printk("scsi(%ld): Login IOCB -- " | |
997 | "failed login [%x/%02x%02x%02x], status=%x " | |
998 | "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", | |
999 | ha->host_no, remote_fcport->loop_id, | |
1000 | iodesc->d_id.b.domain, iodesc->d_id.b.area, | |
1001 | iodesc->d_id.b.al_pa, status, mb[0], mb[1], | |
1002 | mb[2], mb[6], mb[7])); | |
1003 | } | |
1004 | ||
1005 | /* Reissue Login with the same IO descriptor. */ | |
1006 | iodesc->signature = | |
1007 | qla2x00_iodesc_to_handle(iodesc); | |
1008 | iodesc->cb_idx = LOGIN_PORT_IOCB_CB; | |
1009 | iodesc->d_id.b24 = remote_fcport->d_id.b24; | |
1010 | remote_fcport->iodesc_idx_sent = iodesc->idx; | |
1011 | remote_fcport->login_retry--; | |
1012 | ||
1013 | DEBUG14(printk("scsi(%ld): Login IOCB -- retrying " | |
1014 | "login to [%x/%02x%02x%02x] (%d).\n", ha->host_no, | |
1015 | remote_fcport->loop_id, | |
1016 | remote_fcport->d_id.b.domain, | |
1017 | remote_fcport->d_id.b.area, | |
1018 | remote_fcport->d_id.b.al_pa, | |
1019 | remote_fcport->login_retry)); | |
1020 | ||
1021 | qla2x00_send_login_iocb(ha, iodesc, | |
1022 | &remote_fcport->d_id, 1); | |
1023 | ||
1024 | return (QLA_FUNCTION_FAILED); | |
1025 | } else { | |
1026 | /* No more logins, mark device dead. */ | |
1027 | DEBUG14(printk("scsi(%ld): Login IOCB -- failed " | |
1028 | "login [%x/%02x%02x%02x] after retries, status=%x " | |
1029 | "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", | |
1030 | ha->host_no, remote_fcport->loop_id, | |
1031 | iodesc->d_id.b.domain, iodesc->d_id.b.area, | |
1032 | iodesc->d_id.b.al_pa, status, mb[0], mb[1], | |
1033 | mb[2], mb[6], mb[7])); | |
1034 | ||
1035 | atomic_set(&remote_fcport->state, FCS_DEVICE_DEAD); | |
1036 | if (remote_fcport->port_type == FCT_RSCN) { | |
1037 | DEBUG14(printk("scsi(%ld): Login IOCB -- " | |
1038 | "Freeing dead RSCN fcport %p " | |
1039 | "[%x/%02x%02x%02x].\n", ha->host_no, | |
1040 | remote_fcport, remote_fcport->loop_id, | |
1041 | remote_fcport->d_id.b.domain, | |
1042 | remote_fcport->d_id.b.area, | |
1043 | remote_fcport->d_id.b.al_pa)); | |
1044 | ||
1045 | list_del(&remote_fcport->list); | |
1046 | kfree(remote_fcport); | |
1047 | } | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | return (QLA_SUCCESS); | |
1052 | } | |
1053 | ||
1054 | ||
1055 | /** | |
1056 | * IO descriptor processing routines. | |
1057 | **/ | |
1058 | ||
1059 | /** | |
1060 | * qla2x00_alloc_rscn_fcport() - Allocate an RSCN type fcport. | |
1061 | * @ha: HA context | |
1062 | * @flags: allocation flags | |
1063 | * | |
1064 | * Returns a pointer to the allocated RSCN fcport, or NULL, if none available. | |
1065 | */ | |
1066 | fc_port_t * | |
1067 | qla2x00_alloc_rscn_fcport(scsi_qla_host_t *ha, int flags) | |
1068 | { | |
1069 | fc_port_t *fcport; | |
1070 | ||
1071 | fcport = qla2x00_alloc_fcport(ha, flags); | |
1072 | if (fcport == NULL) | |
1073 | return (fcport); | |
1074 | ||
1075 | /* Setup RSCN fcport structure. */ | |
1076 | fcport->port_type = FCT_RSCN; | |
1077 | ||
1078 | return (fcport); | |
1079 | } | |
1080 | ||
1081 | /** | |
1082 | * qla2x00_handle_port_rscn() - Handle port RSCN. | |
1083 | * @ha: HA context | |
1084 | * @rscn_entry: RSCN entry | |
1085 | * @fcport: fcport entry to updated | |
1086 | * | |
1087 | * Returns QLA_SUCCESS if the port RSCN was handled. | |
1088 | */ | |
1089 | int | |
1090 | qla2x00_handle_port_rscn(scsi_qla_host_t *ha, uint32_t rscn_entry, | |
1091 | fc_port_t *known_fcport, int ha_locked) | |
1092 | { | |
1093 | int rval; | |
1094 | port_id_t rscn_pid; | |
1095 | fc_port_t *fcport, *remote_fcport, *rscn_fcport; | |
1096 | struct io_descriptor *iodesc; | |
1097 | ||
1098 | remote_fcport = NULL; | |
1099 | rscn_fcport = NULL; | |
1100 | ||
1101 | /* Prepare port id based on incoming entries. */ | |
1102 | if (known_fcport) { | |
1103 | rscn_pid.b24 = known_fcport->d_id.b24; | |
1104 | remote_fcport = known_fcport; | |
1105 | ||
1106 | DEBUG14(printk("scsi(%ld): Handle RSCN -- process RSCN for " | |
1107 | "fcport [%02x%02x%02x].\n", ha->host_no, | |
1108 | remote_fcport->d_id.b.domain, remote_fcport->d_id.b.area, | |
1109 | remote_fcport->d_id.b.al_pa)); | |
1110 | } else { | |
1111 | rscn_pid.b.domain = LSB(MSW(rscn_entry)); | |
1112 | rscn_pid.b.area = MSB(LSW(rscn_entry)); | |
1113 | rscn_pid.b.al_pa = LSB(LSW(rscn_entry)); | |
1114 | ||
1115 | DEBUG14(printk("scsi(%ld): Handle RSCN -- process RSCN for " | |
1116 | "port id [%02x%02x%02x].\n", ha->host_no, | |
1117 | rscn_pid.b.domain, rscn_pid.b.area, rscn_pid.b.al_pa)); | |
1118 | ||
1119 | /* | |
1120 | * Search fcport lists for a known entry at the specified port | |
1121 | * ID. | |
1122 | */ | |
1123 | list_for_each_entry(fcport, &ha->fcports, list) { | |
1124 | if (rscn_pid.b24 == fcport->d_id.b24) { | |
1125 | remote_fcport = fcport; | |
1126 | break; | |
1127 | } | |
1128 | } | |
1129 | list_for_each_entry(fcport, &ha->rscn_fcports, list) { | |
1130 | if (rscn_pid.b24 == fcport->d_id.b24) { | |
1131 | rscn_fcport = fcport; | |
1132 | break; | |
1133 | } | |
1134 | } | |
1135 | if (remote_fcport == NULL) | |
1136 | remote_fcport = rscn_fcport; | |
1137 | } | |
1138 | ||
1139 | /* | |
1140 | * If the port is already in our fcport list and online, send an ADISC | |
1141 | * to see if it's still alive. Issue login if a new fcport or the known | |
1142 | * fcport is currently offline. | |
1143 | */ | |
1144 | if (remote_fcport) { | |
1145 | /* | |
1146 | * No need to send request if the remote fcport is currently | |
1147 | * waiting for an available io descriptor. | |
1148 | */ | |
1149 | if (known_fcport == NULL && | |
1150 | (remote_fcport->iodesc_idx_sent == IODESC_ADISC_NEEDED || | |
1151 | remote_fcport->iodesc_idx_sent == IODESC_LOGIN_NEEDED)) { | |
1152 | /* | |
1153 | * If previous waiting io descriptor is an ADISC, then | |
1154 | * the new RSCN may come from a new remote fcport being | |
1155 | * plugged into the same location. | |
1156 | */ | |
1157 | if (remote_fcport->port_type == FCT_RSCN) { | |
1158 | remote_fcport->iodesc_idx_sent = | |
1159 | IODESC_LOGIN_NEEDED; | |
1160 | } else if (remote_fcport->iodesc_idx_sent == | |
1161 | IODESC_ADISC_NEEDED) { | |
1162 | fc_port_t *new_fcport; | |
1163 | ||
1164 | remote_fcport->iodesc_idx_sent = | |
1165 | IODESC_INVALID_INDEX; | |
1166 | ||
1167 | /* Create new fcport for later login. */ | |
1168 | new_fcport = qla2x00_alloc_rscn_fcport(ha, | |
1169 | ha_locked ? GFP_ATOMIC: GFP_KERNEL); | |
1170 | if (new_fcport) { | |
1171 | DEBUG14(printk("scsi(%ld): Handle RSCN " | |
1172 | "-- creating RSCN fcport %p for " | |
1173 | "future login.\n", ha->host_no, | |
1174 | new_fcport)); | |
1175 | ||
1176 | new_fcport->d_id.b24 = | |
1177 | remote_fcport->d_id.b24; | |
1178 | new_fcport->iodesc_idx_sent = | |
1179 | IODESC_LOGIN_NEEDED; | |
1180 | ||
1181 | list_add_tail(&new_fcport->list, | |
1182 | &ha->rscn_fcports); | |
1183 | set_bit(IODESC_PROCESS_NEEDED, | |
1184 | &ha->dpc_flags); | |
1185 | } else { | |
1186 | DEBUG14(printk("scsi(%ld): Handle RSCN " | |
1187 | "-- unable to allocate RSCN fcport " | |
1188 | "for future login.\n", | |
1189 | ha->host_no)); | |
1190 | } | |
1191 | } | |
1192 | return (QLA_SUCCESS); | |
1193 | } | |
1194 | ||
1195 | /* Send ADISC if the fcport is online */ | |
1196 | if (atomic_read(&remote_fcport->state) == FCS_ONLINE || | |
1197 | remote_fcport->iodesc_idx_sent == IODESC_ADISC_NEEDED) { | |
1198 | ||
1199 | atomic_set(&remote_fcport->state, FCS_DEVICE_LOST); | |
1200 | ||
1201 | iodesc = qla2x00_alloc_iodesc(ha); | |
1202 | if (iodesc == NULL) { | |
1203 | /* Mark fcport for later adisc processing */ | |
1204 | DEBUG14(printk("scsi(%ld): Handle RSCN -- not " | |
1205 | "enough IO descriptors for Adisc, flag " | |
1206 | "for later processing.\n", ha->host_no)); | |
1207 | ||
1208 | remote_fcport->iodesc_idx_sent = | |
1209 | IODESC_ADISC_NEEDED; | |
1210 | set_bit(IODESC_PROCESS_NEEDED, &ha->dpc_flags); | |
1211 | ||
1212 | return (QLA_SUCCESS); | |
1213 | } | |
1214 | ||
1215 | iodesc->cb_idx = ADISC_PORT_IOCB_CB; | |
1216 | iodesc->d_id.b24 = rscn_pid.b24; | |
1217 | iodesc->remote_fcport = remote_fcport; | |
1218 | remote_fcport->iodesc_idx_sent = iodesc->idx; | |
1219 | qla2x00_send_adisc_iocb(ha, iodesc, ha_locked); | |
1220 | ||
1221 | return (QLA_SUCCESS); | |
1222 | } else if (remote_fcport->iodesc_idx_sent < | |
1223 | MAX_IO_DESCRIPTORS && | |
1224 | ha->io_descriptors[remote_fcport->iodesc_idx_sent].cb_idx == | |
1225 | ADISC_PORT_IOCB_CB) { | |
1226 | /* | |
1227 | * Receiving another RSCN while an ADISC is pending, | |
1228 | * abort the IOCB. Use the same descriptor for the | |
1229 | * abort. | |
1230 | */ | |
1231 | uint32_t handle_to_abort; | |
1232 | ||
1233 | iodesc = &ha->io_descriptors[ | |
1234 | remote_fcport->iodesc_idx_sent]; | |
1235 | qla2x00_remove_iodesc_timer(iodesc); | |
1236 | handle_to_abort = iodesc->signature; | |
1237 | iodesc->signature = qla2x00_iodesc_to_handle(iodesc); | |
1238 | iodesc->cb_idx = ABORT_IOCB_CB; | |
1239 | iodesc->d_id.b24 = remote_fcport->d_id.b24; | |
1240 | iodesc->remote_fcport = remote_fcport; | |
1241 | remote_fcport->iodesc_idx_sent = iodesc->idx; | |
1242 | ||
1243 | DEBUG14(printk("scsi(%ld): Handle RSCN -- issuing " | |
1244 | "abort to outstanding Adisc [%x/%02x%02x%02x].\n", | |
1245 | ha->host_no, remote_fcport->loop_id, | |
1246 | iodesc->d_id.b.domain, iodesc->d_id.b.area, | |
1247 | iodesc->d_id.b.al_pa)); | |
1248 | ||
1249 | qla2x00_send_abort_iocb(ha, iodesc, handle_to_abort, | |
1250 | ha_locked); | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | /* We need to login to the remote port, find it. */ | |
1255 | if (known_fcport) { | |
1256 | remote_fcport = known_fcport; | |
1257 | } else if (rscn_fcport && rscn_fcport->d_id.b24 != INVALID_PORT_ID && | |
1258 | rscn_fcport->iodesc_idx_sent < MAX_IO_DESCRIPTORS && | |
1259 | ha->io_descriptors[rscn_fcport->iodesc_idx_sent].cb_idx == | |
1260 | LOGIN_PORT_IOCB_CB) { | |
1261 | /* | |
1262 | * Ignore duplicate RSCN on fcport which has already | |
1263 | * initiated a login IOCB. | |
1264 | */ | |
1265 | DEBUG14(printk("scsi(%ld): Handle RSCN -- ignoring, login " | |
1266 | "already sent to [%02x%02x%02x].\n", ha->host_no, | |
1267 | rscn_fcport->d_id.b.domain, rscn_fcport->d_id.b.area, | |
1268 | rscn_fcport->d_id.b.al_pa)); | |
1269 | ||
1270 | return (QLA_SUCCESS); | |
1271 | } else if (rscn_fcport && rscn_fcport->d_id.b24 != INVALID_PORT_ID && | |
1272 | rscn_fcport != remote_fcport) { | |
1273 | /* Reuse same rscn fcport. */ | |
1274 | DEBUG14(printk("scsi(%ld): Handle RSCN -- reusing RSCN fcport " | |
1275 | "[%02x%02x%02x].\n", ha->host_no, | |
1276 | rscn_fcport->d_id.b.domain, rscn_fcport->d_id.b.area, | |
1277 | rscn_fcport->d_id.b.al_pa)); | |
1278 | ||
1279 | remote_fcport = rscn_fcport; | |
1280 | } else { | |
1281 | /* Create new fcport for later login. */ | |
1282 | remote_fcport = qla2x00_alloc_rscn_fcport(ha, | |
1283 | ha_locked ? GFP_ATOMIC: GFP_KERNEL); | |
1284 | list_add_tail(&remote_fcport->list, &ha->rscn_fcports); | |
1285 | } | |
1286 | if (remote_fcport == NULL) | |
1287 | return (QLA_SUCCESS); | |
1288 | ||
1289 | /* Prepare fcport for login. */ | |
1290 | atomic_set(&remote_fcport->state, FCS_DEVICE_LOST); | |
1291 | remote_fcport->login_retry = 3; /* ha->login_retry_count; */ | |
1292 | remote_fcport->d_id.b24 = rscn_pid.b24; | |
1293 | ||
1294 | iodesc = qla2x00_alloc_iodesc(ha); | |
1295 | if (iodesc == NULL) { | |
1296 | /* Mark fcport for later adisc processing. */ | |
1297 | DEBUG14(printk("scsi(%ld): Handle RSCN -- not enough IO " | |
1298 | "descriptors for Login, flag for later processing.\n", | |
1299 | ha->host_no)); | |
1300 | ||
1301 | remote_fcport->iodesc_idx_sent = IODESC_LOGIN_NEEDED; | |
1302 | set_bit(IODESC_PROCESS_NEEDED, &ha->dpc_flags); | |
1303 | ||
1304 | return (QLA_SUCCESS); | |
1305 | } | |
1306 | ||
1307 | if (known_fcport == NULL || rscn_pid.b24 != INVALID_PORT_ID) { | |
1308 | remote_fcport->loop_id = ha->min_external_loopid; | |
1309 | ||
1310 | rval = qla2x00_find_new_loop_id(ha, remote_fcport); | |
1311 | if (rval == QLA_FUNCTION_FAILED) { | |
1312 | /* No more loop ids, failed. */ | |
1313 | DEBUG14(printk("scsi(%ld): Handle RSCN -- no available " | |
1314 | "loop id to perform Login, failed.\n", | |
1315 | ha->host_no)); | |
1316 | ||
1317 | return (rval); | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | iodesc->cb_idx = LOGIN_PORT_IOCB_CB; | |
1322 | iodesc->d_id.b24 = rscn_pid.b24; | |
1323 | iodesc->remote_fcport = remote_fcport; | |
1324 | remote_fcport->iodesc_idx_sent = iodesc->idx; | |
1325 | ||
1326 | DEBUG14(printk("scsi(%ld): Handle RSCN -- attempting login to " | |
1327 | "[%x/%02x%02x%02x].\n", ha->host_no, remote_fcport->loop_id, | |
1328 | iodesc->d_id.b.domain, iodesc->d_id.b.area, iodesc->d_id.b.al_pa)); | |
1329 | ||
1330 | qla2x00_send_login_iocb(ha, iodesc, &rscn_pid, ha_locked); | |
1331 | ||
1332 | return (QLA_SUCCESS); | |
1333 | } | |
1334 | ||
1335 | /** | |
1336 | * qla2x00_process_iodesc() - Complete IO descriptor processing. | |
1337 | * @ha: HA context | |
1338 | * @mbxstat: Mailbox IOCB status | |
1339 | */ | |
1340 | void | |
1341 | qla2x00_process_iodesc(scsi_qla_host_t *ha, struct mbx_entry *mbxstat) | |
1342 | { | |
1343 | int rval; | |
1344 | uint32_t signature; | |
1345 | fc_port_t *fcport; | |
1346 | struct io_descriptor *iodesc; | |
1347 | ||
1348 | signature = mbxstat->handle; | |
1349 | ||
1350 | DEBUG14(printk("scsi(%ld): Process IODesc -- processing %08x.\n", | |
1351 | ha->host_no, signature)); | |
1352 | ||
1353 | /* Retrieve proper IO descriptor. */ | |
1354 | iodesc = qla2x00_handle_to_iodesc(ha, signature); | |
1355 | if (iodesc == NULL) { | |
1356 | DEBUG14(printk("scsi(%ld): Process IODesc -- ignoring, " | |
1357 | "incorrect signature %08x.\n", ha->host_no, signature)); | |
1358 | ||
1359 | return; | |
1360 | } | |
1361 | ||
1362 | /* Stop IO descriptor timer. */ | |
1363 | qla2x00_remove_iodesc_timer(iodesc); | |
1364 | ||
1365 | /* Verify signature match. */ | |
1366 | if (iodesc->signature != signature) { | |
1367 | DEBUG14(printk("scsi(%ld): Process IODesc -- ignoring, " | |
1368 | "signature mismatch, sent %08x, received %08x.\n", | |
1369 | ha->host_no, iodesc->signature, signature)); | |
1370 | ||
1371 | return; | |
1372 | } | |
1373 | ||
1374 | /* Go with IOCB callback. */ | |
1375 | rval = iocb_function_cb_list[iodesc->cb_idx](ha, iodesc, mbxstat); | |
1376 | if (rval != QLA_SUCCESS) { | |
1377 | /* IO descriptor reused by callback. */ | |
1378 | return; | |
1379 | } | |
1380 | ||
1381 | qla2x00_free_iodesc(iodesc); | |
1382 | ||
1383 | if (test_bit(IODESC_PROCESS_NEEDED, &ha->dpc_flags)) { | |
1384 | /* Scan our fcports list for any RSCN requests. */ | |
1385 | list_for_each_entry(fcport, &ha->fcports, list) { | |
1386 | if (fcport->iodesc_idx_sent == IODESC_ADISC_NEEDED || | |
1387 | fcport->iodesc_idx_sent == IODESC_LOGIN_NEEDED) { | |
1388 | qla2x00_handle_port_rscn(ha, 0, fcport, 1); | |
1389 | return; | |
1390 | } | |
1391 | } | |
1392 | ||
1393 | /* Scan our RSCN fcports list for any RSCN requests. */ | |
1394 | list_for_each_entry(fcport, &ha->rscn_fcports, list) { | |
1395 | if (fcport->iodesc_idx_sent == IODESC_ADISC_NEEDED || | |
1396 | fcport->iodesc_idx_sent == IODESC_LOGIN_NEEDED) { | |
1397 | qla2x00_handle_port_rscn(ha, 0, fcport, 1); | |
1398 | return; | |
1399 | } | |
1400 | } | |
1401 | } | |
1402 | clear_bit(IODESC_PROCESS_NEEDED, &ha->dpc_flags); | |
1403 | } | |
1404 | ||
1405 | /** | |
1406 | * qla2x00_cancel_io_descriptors() - Cancel all outstanding io descriptors. | |
1407 | * @ha: HA context | |
1408 | * | |
1409 | * This routine will also delete any RSCN entries related to the outstanding | |
1410 | * IO descriptors. | |
1411 | */ | |
1412 | void | |
1413 | qla2x00_cancel_io_descriptors(scsi_qla_host_t *ha) | |
1414 | { | |
1415 | fc_port_t *fcport, *fcptemp; | |
1416 | ||
1417 | clear_bit(IODESC_PROCESS_NEEDED, &ha->dpc_flags); | |
1418 | ||
1419 | /* Abort all IO descriptors. */ | |
1420 | qla2x00_init_io_descriptors(ha); | |
1421 | ||
1422 | /* Reset all pending IO descriptors in fcports list. */ | |
1423 | list_for_each_entry(fcport, &ha->fcports, list) { | |
1424 | fcport->iodesc_idx_sent = IODESC_INVALID_INDEX; | |
1425 | } | |
1426 | ||
1427 | /* Reset all pending IO descriptors in rscn fcports list. */ | |
1428 | list_for_each_entry_safe(fcport, fcptemp, &ha->rscn_fcports, list) { | |
1429 | DEBUG14(printk("scsi(%ld): Cancel IOs -- Freeing RSCN fcport " | |
1430 | "%p [%x/%02x%02x%02x].\n", ha->host_no, fcport, | |
1431 | fcport->loop_id, fcport->d_id.b.domain, fcport->d_id.b.area, | |
1432 | fcport->d_id.b.al_pa)); | |
1433 | ||
1434 | list_del(&fcport->list); | |
1435 | kfree(fcport); | |
1436 | } | |
1437 | } |