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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 | static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t); | |
22 | static void qla2x00_async_event(scsi_qla_host_t *, uint32_t); | |
23 | static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t); | |
24 | void qla2x00_process_response_queue(struct scsi_qla_host *); | |
25 | static void qla2x00_status_entry(scsi_qla_host_t *, sts_entry_t *); | |
26 | static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *); | |
27 | static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *); | |
28 | static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *); | |
29 | ||
30 | static int qla2x00_check_sense(struct scsi_cmnd *cp, os_lun_t *); | |
31 | ||
32 | /** | |
33 | * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200. | |
34 | * @irq: | |
35 | * @dev_id: SCSI driver HA context | |
36 | * @regs: | |
37 | * | |
38 | * Called by system whenever the host adapter generates an interrupt. | |
39 | * | |
40 | * Returns handled flag. | |
41 | */ | |
42 | irqreturn_t | |
43 | qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs) | |
44 | { | |
45 | scsi_qla_host_t *ha; | |
46 | device_reg_t __iomem *reg; | |
47 | int status; | |
48 | unsigned long flags; | |
49 | unsigned long iter; | |
50 | uint32_t mbx; | |
51 | ||
52 | ha = (scsi_qla_host_t *) dev_id; | |
53 | if (!ha) { | |
54 | printk(KERN_INFO | |
55 | "%s(): NULL host pointer\n", __func__); | |
56 | return (IRQ_NONE); | |
57 | } | |
58 | ||
59 | reg = ha->iobase; | |
60 | status = 0; | |
61 | ||
62 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
63 | for (iter = 50; iter--; ) { | |
64 | if ((RD_REG_WORD(®->istatus) & ISR_RISC_INT) == 0) | |
65 | break; | |
66 | ||
67 | if (RD_REG_WORD(®->semaphore) & BIT_0) { | |
68 | WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); | |
69 | RD_REG_WORD(®->hccr); | |
70 | ||
71 | /* Get mailbox data. */ | |
72 | mbx = RD_MAILBOX_REG(ha, reg, 0); | |
73 | if (mbx > 0x3fff && mbx < 0x8000) { | |
74 | qla2x00_mbx_completion(ha, (uint16_t)mbx); | |
75 | status |= MBX_INTERRUPT; | |
76 | } else if (mbx > 0x7fff && mbx < 0xc000) { | |
77 | qla2x00_async_event(ha, mbx); | |
78 | } else { | |
79 | /*EMPTY*/ | |
80 | DEBUG2(printk("scsi(%ld): Unrecognized " | |
81 | "interrupt type (%d)\n", | |
82 | ha->host_no, mbx)); | |
83 | } | |
84 | /* Release mailbox registers. */ | |
85 | WRT_REG_WORD(®->semaphore, 0); | |
86 | RD_REG_WORD(®->semaphore); | |
87 | } else { | |
88 | qla2x00_process_response_queue(ha); | |
89 | ||
90 | WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); | |
91 | RD_REG_WORD(®->hccr); | |
92 | } | |
93 | } | |
94 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
95 | ||
96 | qla2x00_next(ha); | |
97 | ha->last_irq_cpu = _smp_processor_id(); | |
98 | ha->total_isr_cnt++; | |
99 | ||
100 | if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && | |
101 | (status & MBX_INTERRUPT) && ha->flags.mbox_int) { | |
102 | spin_lock_irqsave(&ha->mbx_reg_lock, flags); | |
103 | ||
104 | set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); | |
105 | up(&ha->mbx_intr_sem); | |
106 | ||
107 | spin_unlock_irqrestore(&ha->mbx_reg_lock, flags); | |
108 | } | |
109 | ||
110 | if (!list_empty(&ha->done_queue)) | |
111 | qla2x00_done(ha); | |
112 | ||
113 | return (IRQ_HANDLED); | |
114 | } | |
115 | ||
116 | /** | |
117 | * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx. | |
118 | * @irq: | |
119 | * @dev_id: SCSI driver HA context | |
120 | * @regs: | |
121 | * | |
122 | * Called by system whenever the host adapter generates an interrupt. | |
123 | * | |
124 | * Returns handled flag. | |
125 | */ | |
126 | irqreturn_t | |
127 | qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs) | |
128 | { | |
129 | scsi_qla_host_t *ha; | |
130 | device_reg_t __iomem *reg; | |
131 | int status; | |
132 | unsigned long flags; | |
133 | unsigned long iter; | |
134 | uint32_t stat; | |
135 | uint32_t mbx; | |
136 | uint16_t hccr; | |
137 | ||
138 | ha = (scsi_qla_host_t *) dev_id; | |
139 | if (!ha) { | |
140 | printk(KERN_INFO | |
141 | "%s(): NULL host pointer\n", __func__); | |
142 | return (IRQ_NONE); | |
143 | } | |
144 | ||
145 | reg = ha->iobase; | |
146 | status = 0; | |
147 | ||
148 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
149 | for (iter = 50; iter--; ) { | |
150 | stat = RD_REG_DWORD(®->u.isp2300.host_status); | |
151 | if (stat & HSR_RISC_PAUSED) { | |
152 | hccr = RD_REG_WORD(®->hccr); | |
153 | if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8)) | |
154 | qla_printk(KERN_INFO, ha, | |
155 | "Parity error -- HCCR=%x.\n", hccr); | |
156 | else | |
157 | qla_printk(KERN_INFO, ha, | |
158 | "RISC paused -- HCCR=%x\n", hccr); | |
159 | ||
160 | /* | |
161 | * Issue a "HARD" reset in order for the RISC | |
162 | * interrupt bit to be cleared. Schedule a big | |
163 | * hammmer to get out of the RISC PAUSED state. | |
164 | */ | |
165 | WRT_REG_WORD(®->hccr, HCCR_RESET_RISC); | |
166 | RD_REG_WORD(®->hccr); | |
167 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
168 | break; | |
169 | } else if ((stat & HSR_RISC_INT) == 0) | |
170 | break; | |
171 | ||
172 | mbx = MSW(stat); | |
173 | switch (stat & 0xff) { | |
174 | case 0x13: | |
175 | qla2x00_process_response_queue(ha); | |
176 | break; | |
177 | case 0x1: | |
178 | case 0x2: | |
179 | case 0x10: | |
180 | case 0x11: | |
181 | qla2x00_mbx_completion(ha, (uint16_t)mbx); | |
182 | status |= MBX_INTERRUPT; | |
183 | ||
184 | /* Release mailbox registers. */ | |
185 | WRT_REG_WORD(®->semaphore, 0); | |
186 | break; | |
187 | case 0x12: | |
188 | qla2x00_async_event(ha, mbx); | |
189 | break; | |
190 | case 0x15: | |
191 | mbx = mbx << 16 | MBA_CMPLT_1_16BIT; | |
192 | qla2x00_async_event(ha, mbx); | |
193 | break; | |
194 | case 0x16: | |
195 | mbx = mbx << 16 | MBA_SCSI_COMPLETION; | |
196 | qla2x00_async_event(ha, mbx); | |
197 | break; | |
198 | default: | |
199 | DEBUG2(printk("scsi(%ld): Unrecognized interrupt type " | |
200 | "(%d)\n", | |
201 | ha->host_no, stat & 0xff)); | |
202 | break; | |
203 | } | |
204 | WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); | |
205 | RD_REG_WORD_RELAXED(®->hccr); | |
206 | } | |
207 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
208 | ||
209 | qla2x00_next(ha); | |
210 | ha->last_irq_cpu = _smp_processor_id(); | |
211 | ha->total_isr_cnt++; | |
212 | ||
213 | if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && | |
214 | (status & MBX_INTERRUPT) && ha->flags.mbox_int) { | |
215 | spin_lock_irqsave(&ha->mbx_reg_lock, flags); | |
216 | ||
217 | set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); | |
218 | up(&ha->mbx_intr_sem); | |
219 | ||
220 | spin_unlock_irqrestore(&ha->mbx_reg_lock, flags); | |
221 | } | |
222 | ||
223 | if (!list_empty(&ha->done_queue)) | |
224 | qla2x00_done(ha); | |
225 | ||
226 | return (IRQ_HANDLED); | |
227 | } | |
228 | ||
229 | /** | |
230 | * qla2x00_mbx_completion() - Process mailbox command completions. | |
231 | * @ha: SCSI driver HA context | |
232 | * @mb0: Mailbox0 register | |
233 | */ | |
234 | static void | |
235 | qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0) | |
236 | { | |
237 | uint16_t cnt; | |
238 | uint16_t __iomem *wptr; | |
239 | device_reg_t __iomem *reg = ha->iobase; | |
240 | ||
241 | /* Load return mailbox registers. */ | |
242 | ha->flags.mbox_int = 1; | |
243 | ha->mailbox_out[0] = mb0; | |
244 | wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1); | |
245 | ||
246 | for (cnt = 1; cnt < ha->mbx_count; cnt++) { | |
247 | if (IS_QLA2200(ha) && cnt == 8) | |
248 | wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8); | |
249 | if (cnt == 4 || cnt == 5) | |
250 | ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr); | |
251 | else | |
252 | ha->mailbox_out[cnt] = RD_REG_WORD(wptr); | |
253 | ||
254 | wptr++; | |
255 | } | |
256 | ||
257 | if (ha->mcp) { | |
258 | DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n", | |
259 | __func__, ha->host_no, ha->mcp->mb[0])); | |
260 | } else { | |
261 | DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n", | |
262 | __func__, ha->host_no)); | |
263 | } | |
264 | } | |
265 | ||
266 | /** | |
267 | * qla2x00_async_event() - Process aynchronous events. | |
268 | * @ha: SCSI driver HA context | |
269 | * @mb0: Mailbox0 register | |
270 | */ | |
271 | static void | |
272 | qla2x00_async_event(scsi_qla_host_t *ha, uint32_t mbx) | |
273 | { | |
274 | static char *link_speeds[5] = { "1", "2", "4", "?", "10" }; | |
275 | char *link_speed; | |
276 | uint16_t mb[4]; | |
277 | uint16_t handle_cnt; | |
278 | uint16_t cnt; | |
279 | uint32_t handles[5]; | |
280 | device_reg_t __iomem *reg = ha->iobase; | |
281 | uint32_t rscn_entry, host_pid; | |
282 | uint8_t rscn_queue_index; | |
283 | ||
284 | /* Setup to process RIO completion. */ | |
285 | handle_cnt = 0; | |
286 | mb[0] = LSW(mbx); | |
287 | switch (mb[0]) { | |
288 | case MBA_SCSI_COMPLETION: | |
289 | if (IS_QLA2100(ha) || IS_QLA2200(ha)) | |
290 | handles[0] = le32_to_cpu( | |
291 | ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) | | |
292 | RD_MAILBOX_REG(ha, reg, 1)); | |
293 | else | |
294 | handles[0] = le32_to_cpu( | |
295 | ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) | | |
296 | MSW(mbx)); | |
297 | handle_cnt = 1; | |
298 | break; | |
299 | case MBA_CMPLT_1_16BIT: | |
300 | if (IS_QLA2100(ha) || IS_QLA2200(ha)) | |
301 | handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1); | |
302 | else | |
303 | handles[0] = MSW(mbx); | |
304 | handle_cnt = 1; | |
305 | mb[0] = MBA_SCSI_COMPLETION; | |
306 | break; | |
307 | case MBA_CMPLT_2_16BIT: | |
308 | handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1); | |
309 | handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2); | |
310 | handle_cnt = 2; | |
311 | mb[0] = MBA_SCSI_COMPLETION; | |
312 | break; | |
313 | case MBA_CMPLT_3_16BIT: | |
314 | handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1); | |
315 | handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2); | |
316 | handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3); | |
317 | handle_cnt = 3; | |
318 | mb[0] = MBA_SCSI_COMPLETION; | |
319 | break; | |
320 | case MBA_CMPLT_4_16BIT: | |
321 | handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1); | |
322 | handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2); | |
323 | handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3); | |
324 | handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6); | |
325 | handle_cnt = 4; | |
326 | mb[0] = MBA_SCSI_COMPLETION; | |
327 | break; | |
328 | case MBA_CMPLT_5_16BIT: | |
329 | handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1); | |
330 | handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2); | |
331 | handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3); | |
332 | handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6); | |
333 | handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7); | |
334 | handle_cnt = 5; | |
335 | mb[0] = MBA_SCSI_COMPLETION; | |
336 | break; | |
337 | case MBA_CMPLT_2_32BIT: | |
338 | handles[0] = le32_to_cpu( | |
339 | ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) | | |
340 | RD_MAILBOX_REG(ha, reg, 1)); | |
341 | handles[1] = le32_to_cpu( | |
342 | ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) | | |
343 | RD_MAILBOX_REG(ha, reg, 6)); | |
344 | handle_cnt = 2; | |
345 | mb[0] = MBA_SCSI_COMPLETION; | |
346 | break; | |
347 | default: | |
348 | break; | |
349 | } | |
350 | ||
351 | switch (mb[0]) { | |
352 | case MBA_SCSI_COMPLETION: /* Fast Post */ | |
353 | if (!ha->flags.online) | |
354 | break; | |
355 | ||
356 | for (cnt = 0; cnt < handle_cnt; cnt++) | |
357 | qla2x00_process_completed_request(ha, handles[cnt]); | |
358 | break; | |
359 | ||
360 | case MBA_RESET: /* Reset */ | |
361 | DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no)); | |
362 | ||
363 | set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); | |
364 | break; | |
365 | ||
366 | case MBA_SYSTEM_ERR: /* System Error */ | |
367 | mb[1] = RD_MAILBOX_REG(ha, reg, 1); | |
368 | mb[2] = RD_MAILBOX_REG(ha, reg, 2); | |
369 | mb[3] = RD_MAILBOX_REG(ha, reg, 3); | |
370 | ||
371 | qla_printk(KERN_INFO, ha, | |
372 | "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n", | |
373 | mb[1], mb[2], mb[3]); | |
374 | ||
375 | if (IS_QLA2100(ha) || IS_QLA2200(ha)) | |
376 | qla2100_fw_dump(ha, 1); | |
377 | else | |
378 | qla2300_fw_dump(ha, 1); | |
379 | ||
380 | if (mb[1] == 0) { | |
381 | qla_printk(KERN_INFO, ha, | |
382 | "Unrecoverable Hardware Error: adapter marked " | |
383 | "OFFLINE!\n"); | |
384 | ha->flags.online = 0; | |
385 | } else | |
386 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
387 | break; | |
388 | ||
389 | case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ | |
390 | DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n", | |
391 | ha->host_no)); | |
392 | qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n"); | |
393 | ||
394 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
395 | break; | |
396 | ||
397 | case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ | |
398 | DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n", | |
399 | ha->host_no)); | |
400 | qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n"); | |
401 | ||
402 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
403 | break; | |
404 | ||
405 | case MBA_WAKEUP_THRES: /* Request Queue Wake-up */ | |
406 | DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n", | |
407 | ha->host_no)); | |
408 | break; | |
409 | ||
410 | case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */ | |
411 | mb[1] = RD_MAILBOX_REG(ha, reg, 1); | |
412 | ||
413 | DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no, | |
414 | mb[1])); | |
415 | qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]); | |
416 | ||
417 | if (atomic_read(&ha->loop_state) != LOOP_DOWN) { | |
418 | atomic_set(&ha->loop_state, LOOP_DOWN); | |
419 | atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME); | |
420 | qla2x00_mark_all_devices_lost(ha); | |
421 | } | |
422 | ||
423 | set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags); | |
424 | ||
425 | ha->flags.management_server_logged_in = 0; | |
426 | ||
427 | /* Update AEN queue. */ | |
428 | qla2x00_enqueue_aen(ha, MBA_LIP_OCCURRED, NULL); | |
429 | ||
430 | ha->total_lip_cnt++; | |
431 | break; | |
432 | ||
433 | case MBA_LOOP_UP: /* Loop Up Event */ | |
434 | mb[1] = RD_MAILBOX_REG(ha, reg, 1); | |
435 | ||
436 | ha->link_data_rate = 0; | |
437 | if (IS_QLA2100(ha) || IS_QLA2200(ha)) { | |
438 | link_speed = link_speeds[0]; | |
439 | } else { | |
440 | link_speed = link_speeds[3]; | |
441 | if (mb[1] < 5) | |
442 | link_speed = link_speeds[mb[1]]; | |
443 | ha->link_data_rate = mb[1]; | |
444 | } | |
445 | ||
446 | DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n", | |
447 | ha->host_no, link_speed)); | |
448 | qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n", | |
449 | link_speed); | |
450 | ||
451 | ha->flags.management_server_logged_in = 0; | |
452 | ||
453 | /* Update AEN queue. */ | |
454 | qla2x00_enqueue_aen(ha, MBA_LOOP_UP, NULL); | |
455 | break; | |
456 | ||
457 | case MBA_LOOP_DOWN: /* Loop Down Event */ | |
458 | DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN.\n", | |
459 | ha->host_no)); | |
460 | qla_printk(KERN_INFO, ha, "LOOP DOWN detected.\n"); | |
461 | ||
462 | if (atomic_read(&ha->loop_state) != LOOP_DOWN) { | |
463 | atomic_set(&ha->loop_state, LOOP_DOWN); | |
464 | atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME); | |
465 | ha->device_flags |= DFLG_NO_CABLE; | |
466 | qla2x00_mark_all_devices_lost(ha); | |
467 | } | |
468 | ||
469 | ha->flags.management_server_logged_in = 0; | |
470 | ha->link_data_rate = 0; | |
471 | ||
472 | /* Update AEN queue. */ | |
473 | qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL); | |
474 | break; | |
475 | ||
476 | case MBA_LIP_RESET: /* LIP reset occurred */ | |
477 | mb[1] = RD_MAILBOX_REG(ha, reg, 1); | |
478 | ||
479 | DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n", | |
480 | ha->host_no, mb[1])); | |
481 | qla_printk(KERN_INFO, ha, | |
482 | "LIP reset occured (%x).\n", mb[1]); | |
483 | ||
484 | if (atomic_read(&ha->loop_state) != LOOP_DOWN) { | |
485 | atomic_set(&ha->loop_state, LOOP_DOWN); | |
486 | atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME); | |
487 | qla2x00_mark_all_devices_lost(ha); | |
488 | } | |
489 | ||
490 | set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); | |
491 | ||
492 | ha->operating_mode = LOOP; | |
493 | ha->flags.management_server_logged_in = 0; | |
494 | ||
495 | /* Update AEN queue. */ | |
496 | qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL); | |
497 | ||
498 | ha->total_lip_cnt++; | |
499 | break; | |
500 | ||
501 | case MBA_POINT_TO_POINT: /* Point-to-Point */ | |
502 | if (IS_QLA2100(ha)) | |
503 | break; | |
504 | ||
505 | DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n", | |
506 | ha->host_no)); | |
507 | ||
508 | /* | |
509 | * Until there's a transition from loop down to loop up, treat | |
510 | * this as loop down only. | |
511 | */ | |
512 | if (atomic_read(&ha->loop_state) != LOOP_DOWN) { | |
513 | atomic_set(&ha->loop_state, LOOP_DOWN); | |
514 | if (!atomic_read(&ha->loop_down_timer)) | |
515 | atomic_set(&ha->loop_down_timer, | |
516 | LOOP_DOWN_TIME); | |
517 | qla2x00_mark_all_devices_lost(ha); | |
518 | } | |
519 | ||
520 | if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) { | |
521 | set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); | |
522 | } | |
523 | set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags); | |
524 | break; | |
525 | ||
526 | case MBA_CHG_IN_CONNECTION: /* Change in connection mode */ | |
527 | if (IS_QLA2100(ha)) | |
528 | break; | |
529 | ||
530 | mb[1] = RD_MAILBOX_REG(ha, reg, 1); | |
531 | ||
532 | DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection " | |
533 | "received.\n", | |
534 | ha->host_no)); | |
535 | qla_printk(KERN_INFO, ha, | |
536 | "Configuration change detected: value=%x.\n", mb[1]); | |
537 | ||
538 | if (atomic_read(&ha->loop_state) != LOOP_DOWN) { | |
539 | atomic_set(&ha->loop_state, LOOP_DOWN); | |
540 | if (!atomic_read(&ha->loop_down_timer)) | |
541 | atomic_set(&ha->loop_down_timer, | |
542 | LOOP_DOWN_TIME); | |
543 | qla2x00_mark_all_devices_lost(ha); | |
544 | } | |
545 | ||
546 | set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); | |
547 | set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags); | |
548 | break; | |
549 | ||
550 | case MBA_PORT_UPDATE: /* Port database update */ | |
551 | mb[1] = RD_MAILBOX_REG(ha, reg, 1); | |
552 | mb[2] = RD_MAILBOX_REG(ha, reg, 2); | |
553 | ||
554 | /* | |
555 | * If a single remote port just logged into (or logged out of) | |
556 | * us, create a new entry in our rscn fcports list and handle | |
557 | * the event like an RSCN. | |
558 | */ | |
559 | if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) && | |
560 | !IS_QLA6322(ha) && ha->flags.init_done && mb[1] != 0xffff && | |
561 | ((ha->operating_mode == P2P && mb[1] != 0) || | |
562 | (ha->operating_mode != P2P && mb[1] != | |
563 | SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) { | |
564 | int rval; | |
565 | fc_port_t *rscn_fcport; | |
566 | ||
567 | /* Create new fcport for login. */ | |
568 | rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC); | |
569 | if (rscn_fcport) { | |
570 | DEBUG14(printk("scsi(%ld): Port Update -- " | |
571 | "creating RSCN fcport %p for %x/%x.\n", | |
572 | ha->host_no, rscn_fcport, mb[1], mb[2])); | |
573 | ||
574 | rscn_fcport->loop_id = mb[1]; | |
575 | rscn_fcport->d_id.b24 = INVALID_PORT_ID; | |
576 | atomic_set(&rscn_fcport->state, | |
577 | FCS_DEVICE_LOST); | |
578 | list_add_tail(&rscn_fcport->list, | |
579 | &ha->rscn_fcports); | |
580 | ||
581 | rval = qla2x00_handle_port_rscn(ha, 0, | |
582 | rscn_fcport, 1); | |
583 | if (rval == QLA_SUCCESS) | |
584 | break; | |
585 | } else { | |
586 | DEBUG14(printk("scsi(%ld): Port Update -- " | |
587 | "-- unable to allocate RSCN fcport " | |
588 | "login.\n", ha->host_no)); | |
589 | } | |
590 | } | |
591 | ||
592 | /* | |
593 | * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET | |
594 | * event etc. earlier indicating loop is down) then process | |
595 | * it. Otherwise ignore it and Wait for RSCN to come in. | |
596 | */ | |
597 | atomic_set(&ha->loop_down_timer, 0); | |
598 | if (atomic_read(&ha->loop_state) != LOOP_DOWN && | |
599 | atomic_read(&ha->loop_state) != LOOP_DEAD) { | |
600 | DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE " | |
601 | "ignored.\n", ha->host_no)); | |
602 | break; | |
603 | } | |
604 | ||
605 | DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n", | |
606 | ha->host_no)); | |
607 | DEBUG(printk(KERN_INFO | |
608 | "scsi(%ld): Port database changed %04x %04x.\n", | |
609 | ha->host_no, mb[1], mb[2])); | |
610 | ||
611 | /* | |
612 | * Mark all devices as missing so we will login again. | |
613 | */ | |
614 | atomic_set(&ha->loop_state, LOOP_UP); | |
615 | ||
616 | qla2x00_mark_all_devices_lost(ha); | |
617 | ||
618 | ha->flags.rscn_queue_overflow = 1; | |
619 | ||
620 | set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); | |
621 | set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags); | |
622 | ||
623 | /* Update AEN queue. */ | |
624 | qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL); | |
625 | break; | |
626 | ||
627 | case MBA_RSCN_UPDATE: /* State Change Registration */ | |
628 | mb[1] = RD_MAILBOX_REG(ha, reg, 1); | |
629 | mb[2] = RD_MAILBOX_REG(ha, reg, 2); | |
630 | ||
631 | DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n", | |
632 | ha->host_no)); | |
633 | DEBUG(printk(KERN_INFO | |
634 | "scsi(%ld): RSCN database changed -- %04x %04x.\n", | |
635 | ha->host_no, mb[1], mb[2])); | |
636 | ||
637 | rscn_entry = (mb[1] << 16) | mb[2]; | |
638 | host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) | | |
639 | ha->d_id.b.al_pa; | |
640 | if (rscn_entry == host_pid) { | |
641 | DEBUG(printk(KERN_INFO | |
642 | "scsi(%ld): Ignoring RSCN update to local host " | |
643 | "port ID (%06x)\n", | |
644 | ha->host_no, host_pid)); | |
645 | break; | |
646 | } | |
647 | ||
648 | rscn_queue_index = ha->rscn_in_ptr + 1; | |
649 | if (rscn_queue_index == MAX_RSCN_COUNT) | |
650 | rscn_queue_index = 0; | |
651 | if (rscn_queue_index != ha->rscn_out_ptr) { | |
652 | ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry; | |
653 | ha->rscn_in_ptr = rscn_queue_index; | |
654 | } else { | |
655 | ha->flags.rscn_queue_overflow = 1; | |
656 | } | |
657 | ||
658 | atomic_set(&ha->loop_state, LOOP_UPDATE); | |
659 | atomic_set(&ha->loop_down_timer, 0); | |
660 | ha->flags.management_server_logged_in = 0; | |
661 | ||
662 | set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); | |
663 | set_bit(RSCN_UPDATE, &ha->dpc_flags); | |
664 | ||
665 | /* Update AEN queue. */ | |
666 | qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]); | |
667 | break; | |
668 | ||
669 | /* case MBA_RIO_RESPONSE: */ | |
670 | case MBA_ZIO_RESPONSE: | |
671 | DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n", | |
672 | ha->host_no)); | |
673 | DEBUG(printk(KERN_INFO | |
674 | "scsi(%ld): [R|Z]IO update completion.\n", | |
675 | ha->host_no)); | |
676 | ||
677 | qla2x00_process_response_queue(ha); | |
678 | break; | |
679 | } | |
680 | } | |
681 | ||
682 | /** | |
683 | * qla2x00_process_completed_request() - Process a Fast Post response. | |
684 | * @ha: SCSI driver HA context | |
685 | * @index: SRB index | |
686 | */ | |
687 | static void | |
688 | qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index) | |
689 | { | |
690 | srb_t *sp; | |
691 | ||
692 | /* Validate handle. */ | |
693 | if (index >= MAX_OUTSTANDING_COMMANDS) { | |
694 | DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n", | |
695 | ha->host_no, index)); | |
696 | qla_printk(KERN_WARNING, ha, | |
697 | "Invalid SCSI completion handle %d.\n", index); | |
698 | ||
699 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
700 | return; | |
701 | } | |
702 | ||
703 | sp = ha->outstanding_cmds[index]; | |
704 | if (sp) { | |
705 | /* Free outstanding command slot. */ | |
706 | ha->outstanding_cmds[index] = NULL; | |
707 | ||
708 | if (ha->actthreads) | |
709 | ha->actthreads--; | |
710 | sp->lun_queue->out_cnt--; | |
711 | CMD_COMPL_STATUS(sp->cmd) = 0L; | |
712 | CMD_SCSI_STATUS(sp->cmd) = 0L; | |
713 | ||
714 | /* Save ISP completion status */ | |
715 | sp->cmd->result = DID_OK << 16; | |
716 | sp->fo_retry_cnt = 0; | |
717 | add_to_done_queue(ha, sp); | |
718 | } else { | |
719 | DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n", | |
720 | ha->host_no)); | |
721 | qla_printk(KERN_WARNING, ha, | |
722 | "Invalid ISP SCSI completion handle\n"); | |
723 | ||
724 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
725 | } | |
726 | } | |
727 | ||
728 | /** | |
729 | * qla2x00_process_response_queue() - Process response queue entries. | |
730 | * @ha: SCSI driver HA context | |
731 | */ | |
732 | void | |
733 | qla2x00_process_response_queue(struct scsi_qla_host *ha) | |
734 | { | |
735 | device_reg_t __iomem *reg = ha->iobase; | |
736 | sts_entry_t *pkt; | |
737 | uint16_t handle_cnt; | |
738 | uint16_t cnt; | |
739 | ||
740 | if (!ha->flags.online) | |
741 | return; | |
742 | ||
743 | while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) { | |
744 | pkt = (sts_entry_t *)ha->response_ring_ptr; | |
745 | ||
746 | ha->rsp_ring_index++; | |
747 | if (ha->rsp_ring_index == ha->response_q_length) { | |
748 | ha->rsp_ring_index = 0; | |
749 | ha->response_ring_ptr = ha->response_ring; | |
750 | } else { | |
751 | ha->response_ring_ptr++; | |
752 | } | |
753 | ||
754 | if (pkt->entry_status != 0) { | |
755 | DEBUG3(printk(KERN_INFO | |
756 | "scsi(%ld): Process error entry.\n", ha->host_no)); | |
757 | ||
758 | qla2x00_error_entry(ha, pkt); | |
759 | ((response_t *)pkt)->signature = RESPONSE_PROCESSED; | |
760 | wmb(); | |
761 | continue; | |
762 | } | |
763 | ||
764 | switch (pkt->entry_type) { | |
765 | case STATUS_TYPE: | |
766 | qla2x00_status_entry(ha, pkt); | |
767 | break; | |
768 | case STATUS_TYPE_21: | |
769 | handle_cnt = ((sts21_entry_t *)pkt)->handle_count; | |
770 | for (cnt = 0; cnt < handle_cnt; cnt++) { | |
771 | qla2x00_process_completed_request(ha, | |
772 | ((sts21_entry_t *)pkt)->handle[cnt]); | |
773 | } | |
774 | break; | |
775 | case STATUS_TYPE_22: | |
776 | handle_cnt = ((sts22_entry_t *)pkt)->handle_count; | |
777 | for (cnt = 0; cnt < handle_cnt; cnt++) { | |
778 | qla2x00_process_completed_request(ha, | |
779 | ((sts22_entry_t *)pkt)->handle[cnt]); | |
780 | } | |
781 | break; | |
782 | case STATUS_CONT_TYPE: | |
783 | qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt); | |
784 | break; | |
785 | case MS_IOCB_TYPE: | |
786 | qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt); | |
787 | break; | |
788 | case MBX_IOCB_TYPE: | |
789 | if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && | |
790 | !IS_QLA6312(ha) && !IS_QLA6322(ha)) { | |
791 | if (pkt->sys_define == SOURCE_ASYNC_IOCB) { | |
792 | qla2x00_process_iodesc(ha, | |
793 | (struct mbx_entry *)pkt); | |
794 | } else { | |
795 | /* MBX IOCB Type Not Supported. */ | |
796 | DEBUG4(printk(KERN_WARNING | |
797 | "scsi(%ld): Received unknown MBX " | |
798 | "IOCB response pkt type=%x " | |
799 | "source=%x entry status=%x.\n", | |
800 | ha->host_no, pkt->entry_type, | |
801 | pkt->sys_define, | |
802 | pkt->entry_status)); | |
803 | } | |
804 | break; | |
805 | } | |
806 | /* Fallthrough. */ | |
807 | default: | |
808 | /* Type Not Supported. */ | |
809 | DEBUG4(printk(KERN_WARNING | |
810 | "scsi(%ld): Received unknown response pkt type %x " | |
811 | "entry status=%x.\n", | |
812 | ha->host_no, pkt->entry_type, pkt->entry_status)); | |
813 | break; | |
814 | } | |
815 | ((response_t *)pkt)->signature = RESPONSE_PROCESSED; | |
816 | wmb(); | |
817 | } | |
818 | ||
819 | /* Adjust ring index */ | |
820 | WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index); | |
821 | } | |
822 | ||
823 | /** | |
824 | * qla2x00_status_entry() - Process a Status IOCB entry. | |
825 | * @ha: SCSI driver HA context | |
826 | * @pkt: Entry pointer | |
827 | */ | |
828 | static void | |
829 | qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) | |
830 | { | |
831 | int ret; | |
832 | unsigned b, t, l; | |
833 | srb_t *sp; | |
834 | os_lun_t *lq; | |
835 | os_tgt_t *tq; | |
836 | fc_port_t *fcport; | |
837 | struct scsi_cmnd *cp; | |
838 | uint16_t comp_status; | |
839 | uint16_t scsi_status; | |
840 | uint8_t lscsi_status; | |
841 | int32_t resid; | |
842 | uint8_t sense_sz = 0; | |
843 | uint16_t rsp_info_len; | |
844 | ||
845 | /* Fast path completion. */ | |
846 | if (le16_to_cpu(pkt->comp_status) == CS_COMPLETE && | |
847 | (le16_to_cpu(pkt->scsi_status) & SS_MASK) == 0) { | |
848 | qla2x00_process_completed_request(ha, pkt->handle); | |
849 | ||
850 | return; | |
851 | } | |
852 | ||
853 | /* Validate handle. */ | |
854 | if (pkt->handle < MAX_OUTSTANDING_COMMANDS) { | |
855 | sp = ha->outstanding_cmds[pkt->handle]; | |
856 | ha->outstanding_cmds[pkt->handle] = NULL; | |
857 | } else | |
858 | sp = NULL; | |
859 | ||
860 | if (sp == NULL) { | |
861 | DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n", | |
862 | ha->host_no)); | |
863 | qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n"); | |
864 | ||
865 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
866 | if (ha->dpc_wait && !ha->dpc_active) | |
867 | up(ha->dpc_wait); | |
868 | ||
869 | return; | |
870 | } | |
871 | cp = sp->cmd; | |
872 | if (cp == NULL) { | |
873 | DEBUG2(printk("scsi(%ld): Command already returned back to OS " | |
874 | "pkt->handle=%d sp=%p sp->state:%d\n", | |
875 | ha->host_no, pkt->handle, sp, sp->state)); | |
876 | qla_printk(KERN_WARNING, ha, | |
877 | "Command is NULL: already returned to OS (sp=%p)\n", sp); | |
878 | ||
879 | return; | |
880 | } | |
881 | ||
882 | if (ha->actthreads) | |
883 | ha->actthreads--; | |
884 | ||
885 | if (sp->lun_queue == NULL) { | |
886 | DEBUG2(printk("scsi(%ld): Status Entry invalid lun pointer.\n", | |
887 | ha->host_no)); | |
888 | qla_printk(KERN_WARNING, ha, | |
889 | "Status Entry invalid lun pointer.\n"); | |
890 | ||
891 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
892 | if (ha->dpc_wait && !ha->dpc_active) | |
893 | up(ha->dpc_wait); | |
894 | ||
895 | return; | |
896 | } | |
897 | ||
898 | sp->lun_queue->out_cnt--; | |
899 | ||
900 | comp_status = le16_to_cpu(pkt->comp_status); | |
901 | /* Mask of reserved bits 12-15, before we examine the scsi status */ | |
902 | scsi_status = le16_to_cpu(pkt->scsi_status) & SS_MASK; | |
903 | lscsi_status = scsi_status & STATUS_MASK; | |
904 | ||
905 | CMD_ENTRY_STATUS(cp) = pkt->entry_status; | |
906 | CMD_COMPL_STATUS(cp) = comp_status; | |
907 | CMD_SCSI_STATUS(cp) = scsi_status; | |
908 | ||
909 | /* Generate LU queue on cntrl, target, LUN */ | |
910 | b = cp->device->channel; | |
911 | t = cp->device->id; | |
912 | l = cp->device->lun, | |
913 | ||
914 | tq = sp->tgt_queue; | |
915 | lq = sp->lun_queue; | |
916 | ||
917 | /* | |
918 | * If loop is in transient state Report DID_BUS_BUSY | |
919 | */ | |
920 | if ((comp_status != CS_COMPLETE || scsi_status != 0)) { | |
921 | if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && | |
922 | (atomic_read(&ha->loop_down_timer) || | |
923 | atomic_read(&ha->loop_state) != LOOP_READY)) { | |
924 | ||
925 | DEBUG2(printk("scsi(%ld:%d:%d:%d): Loop Not Ready - " | |
926 | "pid=%lx.\n", | |
927 | ha->host_no, b, t, l, cp->serial_number)); | |
928 | ||
929 | qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT); | |
930 | add_to_retry_queue(ha, sp); | |
931 | return; | |
932 | } | |
933 | } | |
934 | ||
935 | /* Check for any FCP transport errors. */ | |
936 | if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) { | |
937 | rsp_info_len = le16_to_cpu(pkt->rsp_info_len); | |
938 | if (rsp_info_len > 3 && pkt->rsp_info[3]) { | |
939 | DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol " | |
940 | "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..." | |
941 | "retrying command\n", ha->host_no, b, t, l, | |
942 | rsp_info_len, pkt->rsp_info[0], pkt->rsp_info[1], | |
943 | pkt->rsp_info[2], pkt->rsp_info[3], | |
944 | pkt->rsp_info[4], pkt->rsp_info[5], | |
945 | pkt->rsp_info[6], pkt->rsp_info[7])); | |
946 | ||
947 | cp->result = DID_BUS_BUSY << 16; | |
948 | add_to_done_queue(ha, sp); | |
949 | return; | |
950 | } | |
951 | } | |
952 | ||
953 | /* | |
954 | * Based on Host and scsi status generate status code for Linux | |
955 | */ | |
956 | switch (comp_status) { | |
957 | case CS_COMPLETE: | |
958 | if (scsi_status == 0) { | |
959 | cp->result = DID_OK << 16; | |
960 | break; | |
961 | } | |
962 | if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) { | |
963 | resid = le32_to_cpu(pkt->residual_length); | |
964 | cp->resid = resid; | |
965 | CMD_RESID_LEN(cp) = resid; | |
966 | } | |
967 | if (lscsi_status == SS_BUSY_CONDITION) { | |
968 | cp->result = DID_BUS_BUSY << 16 | lscsi_status; | |
969 | break; | |
970 | } | |
971 | ||
972 | cp->result = DID_OK << 16 | lscsi_status; | |
973 | ||
974 | if (lscsi_status != SS_CHECK_CONDITION) | |
975 | break; | |
976 | ||
977 | /* | |
978 | * Copy Sense Data into sense buffer | |
979 | */ | |
980 | memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer)); | |
981 | ||
982 | if (!(scsi_status & SS_SENSE_LEN_VALID)) | |
983 | break; | |
984 | ||
985 | if (le16_to_cpu(pkt->req_sense_length) < | |
986 | sizeof(cp->sense_buffer)) | |
987 | sense_sz = le16_to_cpu(pkt->req_sense_length); | |
988 | else | |
989 | sense_sz = sizeof(cp->sense_buffer); | |
990 | ||
991 | CMD_ACTUAL_SNSLEN(cp) = sense_sz; | |
992 | sp->request_sense_length = sense_sz; | |
993 | sp->request_sense_ptr = cp->sense_buffer; | |
994 | ||
995 | if (sp->request_sense_length > 32) | |
996 | sense_sz = 32; | |
997 | ||
998 | memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz); | |
999 | ||
1000 | sp->request_sense_ptr += sense_sz; | |
1001 | sp->request_sense_length -= sense_sz; | |
1002 | if (sp->request_sense_length != 0) | |
1003 | ha->status_srb = sp; | |
1004 | ||
1005 | if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && | |
1006 | qla2x00_check_sense(cp, lq) == QLA_SUCCESS) { | |
1007 | /* Throw away status_cont if any */ | |
1008 | ha->status_srb = NULL; | |
1009 | add_to_scsi_retry_queue(ha, sp); | |
1010 | return; | |
1011 | } | |
1012 | ||
1013 | DEBUG5(printk("%s(): Check condition Sense data, " | |
1014 | "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", | |
1015 | __func__, ha->host_no, b, t, l, cp, | |
1016 | cp->serial_number)); | |
1017 | if (sense_sz) | |
1018 | DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, | |
1019 | CMD_ACTUAL_SNSLEN(cp))); | |
1020 | break; | |
1021 | ||
1022 | case CS_DATA_UNDERRUN: | |
1023 | DEBUG2(printk(KERN_INFO | |
1024 | "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n", | |
1025 | ha->host_no, t, l, comp_status, scsi_status)); | |
1026 | ||
1027 | resid = le32_to_cpu(pkt->residual_length); | |
1028 | if (scsi_status & SS_RESIDUAL_UNDER) { | |
1029 | cp->resid = resid; | |
1030 | CMD_RESID_LEN(cp) = resid; | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | * Check to see if SCSI Status is non zero. If so report SCSI | |
1035 | * Status. | |
1036 | */ | |
1037 | if (lscsi_status != 0) { | |
1038 | if (lscsi_status == SS_BUSY_CONDITION) { | |
1039 | cp->result = DID_BUS_BUSY << 16 | | |
1040 | lscsi_status; | |
1041 | break; | |
1042 | } | |
1043 | ||
1044 | cp->result = DID_OK << 16 | lscsi_status; | |
1045 | ||
1046 | if (lscsi_status != SS_CHECK_CONDITION) | |
1047 | break; | |
1048 | ||
1049 | /* Copy Sense Data into sense buffer */ | |
1050 | memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer)); | |
1051 | ||
1052 | if (!(scsi_status & SS_SENSE_LEN_VALID)) | |
1053 | break; | |
1054 | ||
1055 | if (le16_to_cpu(pkt->req_sense_length) < | |
1056 | sizeof(cp->sense_buffer)) | |
1057 | sense_sz = le16_to_cpu(pkt->req_sense_length); | |
1058 | else | |
1059 | sense_sz = sizeof(cp->sense_buffer); | |
1060 | ||
1061 | CMD_ACTUAL_SNSLEN(cp) = sense_sz; | |
1062 | sp->request_sense_length = sense_sz; | |
1063 | sp->request_sense_ptr = cp->sense_buffer; | |
1064 | ||
1065 | if (sp->request_sense_length > 32) | |
1066 | sense_sz = 32; | |
1067 | ||
1068 | memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz); | |
1069 | ||
1070 | sp->request_sense_ptr += sense_sz; | |
1071 | sp->request_sense_length -= sense_sz; | |
1072 | if (sp->request_sense_length != 0) | |
1073 | ha->status_srb = sp; | |
1074 | ||
1075 | if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && | |
1076 | (qla2x00_check_sense(cp, lq) == QLA_SUCCESS)) { | |
1077 | ha->status_srb = NULL; | |
1078 | add_to_scsi_retry_queue(ha, sp); | |
1079 | return; | |
1080 | } | |
1081 | DEBUG5(printk("%s(): Check condition Sense data, " | |
1082 | "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", | |
1083 | __func__, ha->host_no, b, t, l, cp, | |
1084 | cp->serial_number)); | |
1085 | if (sense_sz) | |
1086 | DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, | |
1087 | CMD_ACTUAL_SNSLEN(cp))); | |
1088 | } else { | |
1089 | /* | |
1090 | * If RISC reports underrun and target does not report | |
1091 | * it then we must have a lost frame, so tell upper | |
1092 | * layer to retry it by reporting a bus busy. | |
1093 | */ | |
1094 | if (!(scsi_status & SS_RESIDUAL_UNDER)) { | |
1095 | DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped " | |
1096 | "frame(s) detected (%x of %x bytes)..." | |
1097 | "retrying command.\n", | |
1098 | ha->host_no, b, t, l, resid, | |
1099 | cp->request_bufflen)); | |
1100 | ||
1101 | cp->result = DID_BUS_BUSY << 16; | |
1102 | ha->dropped_frame_error_cnt++; | |
1103 | break; | |
1104 | } | |
1105 | ||
1106 | /* Handle mid-layer underflow */ | |
1107 | if ((unsigned)(cp->request_bufflen - resid) < | |
1108 | cp->underflow) { | |
1109 | qla_printk(KERN_INFO, ha, | |
1110 | "scsi(%ld:%d:%d:%d): Mid-layer underflow " | |
1111 | "detected (%x of %x bytes)...returning " | |
1112 | "error status.\n", | |
1113 | ha->host_no, b, t, l, resid, | |
1114 | cp->request_bufflen); | |
1115 | ||
1116 | cp->result = DID_ERROR << 16; | |
1117 | break; | |
1118 | } | |
1119 | ||
1120 | /* Everybody online, looking good... */ | |
1121 | cp->result = DID_OK << 16; | |
1122 | } | |
1123 | break; | |
1124 | ||
1125 | case CS_DATA_OVERRUN: | |
1126 | DEBUG2(printk(KERN_INFO | |
1127 | "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n", | |
1128 | ha->host_no, t, l, comp_status, scsi_status)); | |
1129 | DEBUG2(printk(KERN_INFO | |
1130 | "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", | |
1131 | cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3], | |
1132 | cp->cmnd[4], cp->cmnd[5])); | |
1133 | DEBUG2(printk(KERN_INFO | |
1134 | "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR " | |
1135 | "status!\n", | |
1136 | cp->serial_number, cp->request_bufflen, | |
1137 | le32_to_cpu(pkt->residual_length))); | |
1138 | ||
1139 | cp->result = DID_ERROR << 16; | |
1140 | break; | |
1141 | ||
1142 | case CS_PORT_LOGGED_OUT: | |
1143 | case CS_PORT_CONFIG_CHG: | |
1144 | case CS_PORT_BUSY: | |
1145 | case CS_INCOMPLETE: | |
1146 | case CS_PORT_UNAVAILABLE: | |
1147 | /* | |
1148 | * If the port is in Target Down state, return all IOs for this | |
1149 | * Target with DID_NO_CONNECT ELSE Queue the IOs in the | |
1150 | * retry_queue. | |
1151 | */ | |
1152 | fcport = sp->fclun->fcport; | |
1153 | DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down " | |
1154 | "pid=%ld, compl status=0x%x, port state=0x%x\n", | |
1155 | ha->host_no, t, l, cp->serial_number, comp_status, | |
1156 | atomic_read(&fcport->state))); | |
1157 | ||
1158 | if ((sp->flags & (SRB_IOCTL | SRB_TAPE)) || | |
1159 | atomic_read(&fcport->state) == FCS_DEVICE_DEAD) { | |
1160 | cp->result = DID_NO_CONNECT << 16; | |
1161 | if (atomic_read(&ha->loop_state) == LOOP_DOWN) | |
1162 | sp->err_id = SRB_ERR_LOOP; | |
1163 | else | |
1164 | sp->err_id = SRB_ERR_PORT; | |
1165 | add_to_done_queue(ha, sp); | |
1166 | } else { | |
1167 | qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT); | |
1168 | add_to_retry_queue(ha, sp); | |
1169 | } | |
1170 | ||
1171 | if (atomic_read(&fcport->state) == FCS_ONLINE) { | |
1172 | qla2x00_mark_device_lost(ha, fcport, 1); | |
1173 | } | |
1174 | ||
1175 | return; | |
1176 | break; | |
1177 | ||
1178 | case CS_RESET: | |
1179 | DEBUG2(printk(KERN_INFO | |
1180 | "scsi(%ld): RESET status detected 0x%x-0x%x.\n", | |
1181 | ha->host_no, comp_status, scsi_status)); | |
1182 | ||
1183 | if (sp->flags & (SRB_IOCTL | SRB_TAPE)) { | |
1184 | cp->result = DID_RESET << 16; | |
1185 | } else { | |
1186 | qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT); | |
1187 | add_to_retry_queue(ha, sp); | |
1188 | return; | |
1189 | } | |
1190 | break; | |
1191 | ||
1192 | case CS_ABORTED: | |
1193 | /* | |
1194 | * hv2.19.12 - DID_ABORT does not retry the request if we | |
1195 | * aborted this request then abort otherwise it must be a | |
1196 | * reset. | |
1197 | */ | |
1198 | DEBUG2(printk(KERN_INFO | |
1199 | "scsi(%ld): ABORT status detected 0x%x-0x%x.\n", | |
1200 | ha->host_no, comp_status, scsi_status)); | |
1201 | ||
1202 | cp->result = DID_RESET << 16; | |
1203 | break; | |
1204 | ||
1205 | case CS_TIMEOUT: | |
1206 | DEBUG2(printk(KERN_INFO | |
1207 | "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x " | |
1208 | "sflags=%x.\n", ha->host_no, b, t, l, comp_status, | |
1209 | scsi_status, le16_to_cpu(pkt->status_flags))); | |
1210 | ||
1211 | cp->result = DID_BUS_BUSY << 16; | |
1212 | ||
1213 | fcport = lq->fclun->fcport; | |
1214 | ||
1215 | /* Check to see if logout occurred */ | |
1216 | if ((le16_to_cpu(pkt->status_flags) & SF_LOGOUT_SENT)) { | |
1217 | qla2x00_mark_device_lost(ha, fcport, 1); | |
1218 | } | |
1219 | break; | |
1220 | ||
1221 | case CS_QUEUE_FULL: | |
1222 | DEBUG2(printk(KERN_INFO | |
1223 | "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n", | |
1224 | ha->host_no, comp_status, scsi_status)); | |
1225 | ||
1226 | /* SCSI Mid-Layer handles device queue full */ | |
1227 | ||
1228 | cp->result = DID_OK << 16 | lscsi_status; | |
1229 | ||
1230 | /* TODO: ??? */ | |
1231 | /* Adjust queue depth */ | |
1232 | ret = scsi_track_queue_full(cp->device, | |
1233 | sp->lun_queue->out_cnt - 1); | |
1234 | if (ret) { | |
1235 | qla_printk(KERN_INFO, ha, | |
1236 | "scsi(%ld:%d:%d:%d): Queue depth adjusted to %d.\n", | |
1237 | ha->host_no, cp->device->channel, cp->device->id, | |
1238 | cp->device->lun, ret); | |
1239 | } | |
1240 | break; | |
1241 | ||
1242 | default: | |
1243 | DEBUG3(printk("scsi(%ld): Error detected (unknown status) " | |
1244 | "0x%x-0x%x.\n", | |
1245 | ha->host_no, comp_status, scsi_status)); | |
1246 | qla_printk(KERN_INFO, ha, | |
1247 | "Unknown status detected 0x%x-0x%x.\n", | |
1248 | comp_status, scsi_status); | |
1249 | ||
1250 | cp->result = DID_ERROR << 16; | |
1251 | break; | |
1252 | } | |
1253 | ||
1254 | /* Place command on done queue. */ | |
1255 | if (ha->status_srb == NULL) | |
1256 | add_to_done_queue(ha, sp); | |
1257 | } | |
1258 | ||
1259 | /** | |
1260 | * qla2x00_status_cont_entry() - Process a Status Continuations entry. | |
1261 | * @ha: SCSI driver HA context | |
1262 | * @pkt: Entry pointer | |
1263 | * | |
1264 | * Extended sense data. | |
1265 | */ | |
1266 | static void | |
1267 | qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt) | |
1268 | { | |
1269 | uint8_t sense_sz = 0; | |
1270 | srb_t *sp = ha->status_srb; | |
1271 | struct scsi_cmnd *cp; | |
1272 | ||
1273 | if (sp != NULL && sp->request_sense_length != 0) { | |
1274 | cp = sp->cmd; | |
1275 | if (cp == NULL) { | |
1276 | DEBUG2(printk("%s(): Cmd already returned back to OS " | |
1277 | "sp=%p sp->state:%d\n", __func__, sp, sp->state)); | |
1278 | qla_printk(KERN_INFO, ha, | |
1279 | "cmd is NULL: already returned to OS (sp=%p)\n", | |
1280 | sp); | |
1281 | ||
1282 | ha->status_srb = NULL; | |
1283 | return; | |
1284 | } | |
1285 | ||
1286 | if (sp->request_sense_length > sizeof(pkt->data)) { | |
1287 | sense_sz = sizeof(pkt->data); | |
1288 | } else { | |
1289 | sense_sz = sp->request_sense_length; | |
1290 | } | |
1291 | ||
1292 | /* Move sense data. */ | |
1293 | memcpy(sp->request_sense_ptr, pkt->data, sense_sz); | |
1294 | DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz)); | |
1295 | ||
1296 | sp->request_sense_ptr += sense_sz; | |
1297 | sp->request_sense_length -= sense_sz; | |
1298 | ||
1299 | /* Place command on done queue. */ | |
1300 | if (sp->request_sense_length == 0) { | |
1301 | add_to_done_queue(ha, sp); | |
1302 | ha->status_srb = NULL; | |
1303 | } | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | /** | |
1308 | * qla2x00_error_entry() - Process an error entry. | |
1309 | * @ha: SCSI driver HA context | |
1310 | * @pkt: Entry pointer | |
1311 | */ | |
1312 | static void | |
1313 | qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) | |
1314 | { | |
1315 | srb_t *sp; | |
1316 | ||
1317 | #if defined(QL_DEBUG_LEVEL_2) | |
1318 | if (pkt->entry_status & RF_INV_E_ORDER) | |
1319 | qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__); | |
1320 | else if (pkt->entry_status & RF_INV_E_COUNT) | |
1321 | qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__); | |
1322 | else if (pkt->entry_status & RF_INV_E_PARAM) | |
1323 | qla_printk(KERN_ERR, ha, | |
1324 | "%s: Invalid Entry Parameter\n", __func__); | |
1325 | else if (pkt->entry_status & RF_INV_E_TYPE) | |
1326 | qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__); | |
1327 | else if (pkt->entry_status & RF_BUSY) | |
1328 | qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__); | |
1329 | else | |
1330 | qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__); | |
1331 | #endif | |
1332 | ||
1333 | /* Validate handle. */ | |
1334 | if (pkt->handle < MAX_OUTSTANDING_COMMANDS) | |
1335 | sp = ha->outstanding_cmds[pkt->handle]; | |
1336 | else | |
1337 | sp = NULL; | |
1338 | ||
1339 | if (sp) { | |
1340 | /* Free outstanding command slot. */ | |
1341 | ha->outstanding_cmds[pkt->handle] = NULL; | |
1342 | if (ha->actthreads) | |
1343 | ha->actthreads--; | |
1344 | sp->lun_queue->out_cnt--; | |
1345 | ||
1346 | /* Bad payload or header */ | |
1347 | if (pkt->entry_status & | |
1348 | (RF_INV_E_ORDER | RF_INV_E_COUNT | | |
1349 | RF_INV_E_PARAM | RF_INV_E_TYPE)) { | |
1350 | sp->cmd->result = DID_ERROR << 16; | |
1351 | } else if (pkt->entry_status & RF_BUSY) { | |
1352 | sp->cmd->result = DID_BUS_BUSY << 16; | |
1353 | } else { | |
1354 | sp->cmd->result = DID_ERROR << 16; | |
1355 | } | |
1356 | /* Place command on done queue. */ | |
1357 | add_to_done_queue(ha, sp); | |
1358 | ||
1359 | } else if (pkt->entry_type == COMMAND_A64_TYPE || | |
1360 | pkt->entry_type == COMMAND_TYPE) { | |
1361 | DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n", | |
1362 | ha->host_no)); | |
1363 | qla_printk(KERN_WARNING, ha, | |
1364 | "Error entry - invalid handle\n"); | |
1365 | ||
1366 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
1367 | if (ha->dpc_wait && !ha->dpc_active) | |
1368 | up(ha->dpc_wait); | |
1369 | } | |
1370 | } | |
1371 | ||
1372 | /** | |
1373 | * qla2x00_ms_entry() - Process a Management Server entry. | |
1374 | * @ha: SCSI driver HA context | |
1375 | * @index: Response queue out pointer | |
1376 | */ | |
1377 | static void | |
1378 | qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt) | |
1379 | { | |
1380 | srb_t *sp; | |
1381 | ||
1382 | DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n", | |
1383 | __func__, ha->host_no, pkt, pkt->handle1)); | |
1384 | ||
1385 | /* Validate handle. */ | |
1386 | if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS) | |
1387 | sp = ha->outstanding_cmds[pkt->handle1]; | |
1388 | else | |
1389 | sp = NULL; | |
1390 | ||
1391 | if (sp == NULL) { | |
1392 | DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n", | |
1393 | ha->host_no)); | |
1394 | qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n"); | |
1395 | ||
1396 | set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); | |
1397 | return; | |
1398 | } | |
1399 | ||
1400 | CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status); | |
1401 | CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status; | |
1402 | ||
1403 | /* Free outstanding command slot. */ | |
1404 | ha->outstanding_cmds[pkt->handle1] = NULL; | |
1405 | ||
1406 | add_to_done_queue(ha, sp); | |
1407 | } | |
1408 | ||
1409 | /** | |
1410 | * qla2x00_check_sense() - Perform any sense data interrogation. | |
1411 | * @cp: SCSI Command | |
1412 | * @lq: Lun queue | |
1413 | * | |
1414 | * Returns QLA_SUCCESS if the lun queue is suspended, else | |
1415 | * QLA_FUNCTION_FAILED (lun queue not suspended). | |
1416 | */ | |
1417 | static int | |
1418 | qla2x00_check_sense(struct scsi_cmnd *cp, os_lun_t *lq) | |
1419 | { | |
1420 | scsi_qla_host_t *ha; | |
1421 | srb_t *sp; | |
1422 | fc_port_t *fcport; | |
1423 | ||
1424 | ha = (scsi_qla_host_t *) cp->device->host->hostdata; | |
1425 | if ((cp->sense_buffer[0] & 0x70) != 0x70) { | |
1426 | return (QLA_FUNCTION_FAILED); | |
1427 | } | |
1428 | ||
1429 | sp = (srb_t * )CMD_SP(cp); | |
1430 | sp->flags |= SRB_GOT_SENSE; | |
1431 | ||
1432 | switch (cp->sense_buffer[2] & 0xf) { | |
1433 | case RECOVERED_ERROR: | |
1434 | cp->result = DID_OK << 16; | |
1435 | cp->sense_buffer[0] = 0; | |
1436 | break; | |
1437 | ||
1438 | case NOT_READY: | |
1439 | fcport = lq->fclun->fcport; | |
1440 | ||
1441 | /* | |
1442 | * Suspend the lun only for hard disk device type. | |
1443 | */ | |
1444 | if ((fcport->flags & FCF_TAPE_PRESENT) == 0 && | |
1445 | lq->q_state != LUN_STATE_TIMEOUT) { | |
1446 | /* | |
1447 | * If target is in process of being ready then suspend | |
1448 | * lun for 6 secs and retry all the commands. | |
1449 | */ | |
1450 | if (cp->sense_buffer[12] == 0x4 && | |
1451 | cp->sense_buffer[13] == 0x1) { | |
1452 | ||
1453 | /* Suspend the lun for 6 secs */ | |
1454 | qla2x00_suspend_lun(ha, lq, 6, | |
1455 | ql2xsuspendcount); | |
1456 | ||
1457 | return (QLA_SUCCESS); | |
1458 | } | |
1459 | } | |
1460 | break; | |
1461 | } | |
1462 | ||
1463 | return (QLA_FUNCTION_FAILED); | |
1464 | } |