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[NET_SCHED]: sch_htb: use hrtimer based watchdog
[linux-2.6.22.y-op.git] / drivers / scsi / aic94xx / aic94xx_scb.c
blob8f43ff772f2378290d99af151a409b7dd19d6792
1 /*
2 * Aic94xx SAS/SATA driver SCB management.
3 *
4 * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
5 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
6 *
7 * This file is licensed under GPLv2.
8 *
9 * This file is part of the aic94xx driver.
10 *
11 * The aic94xx driver is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; version 2 of the
14 * License.
15 *
16 * The aic94xx driver is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with the aic94xx driver; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 *
25 */
26
27 #include <linux/pci.h>
28 #include <scsi/scsi_host.h>
29
30 #include "aic94xx.h"
31 #include "aic94xx_reg.h"
32 #include "aic94xx_hwi.h"
33 #include "aic94xx_seq.h"
34
35 #include "aic94xx_dump.h"
36
37 /* ---------- EMPTY SCB ---------- */
38
39 #define DL_PHY_MASK 7
40 #define BYTES_DMAED 0
41 #define PRIMITIVE_RECVD 0x08
42 #define PHY_EVENT 0x10
43 #define LINK_RESET_ERROR 0x18
44 #define TIMER_EVENT 0x20
45 #define REQ_TASK_ABORT 0xF0
46 #define REQ_DEVICE_RESET 0xF1
47 #define SIGNAL_NCQ_ERROR 0xF2
48 #define CLEAR_NCQ_ERROR 0xF3
49
50 #define PHY_EVENTS_STATUS (CURRENT_LOSS_OF_SIGNAL | CURRENT_OOB_DONE \
51 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
52 | CURRENT_OOB_ERROR)
53
54 static inline void get_lrate_mode(struct asd_phy *phy, u8 oob_mode)
55 {
56 struct sas_phy *sas_phy = phy->sas_phy.phy;
57
58 switch (oob_mode & 7) {
59 case PHY_SPEED_60:
60 /* FIXME: sas transport class doesn't have this */
61 phy->sas_phy.linkrate = SAS_LINK_RATE_6_0_GBPS;
62 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_6_0_GBPS;
63 break;
64 case PHY_SPEED_30:
65 phy->sas_phy.linkrate = SAS_LINK_RATE_3_0_GBPS;
66 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_3_0_GBPS;
67 break;
68 case PHY_SPEED_15:
69 phy->sas_phy.linkrate = SAS_LINK_RATE_1_5_GBPS;
70 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_1_5_GBPS;
71 break;
72 }
73 sas_phy->negotiated_linkrate = phy->sas_phy.linkrate;
74 sas_phy->maximum_linkrate_hw = SAS_LINK_RATE_3_0_GBPS;
75 sas_phy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
76 sas_phy->maximum_linkrate = phy->phy_desc->max_sas_lrate;
77 sas_phy->minimum_linkrate = phy->phy_desc->min_sas_lrate;
78
79 if (oob_mode & SAS_MODE)
80 phy->sas_phy.oob_mode = SAS_OOB_MODE;
81 else if (oob_mode & SATA_MODE)
82 phy->sas_phy.oob_mode = SATA_OOB_MODE;
83 }
84
85 static inline void asd_phy_event_tasklet(struct asd_ascb *ascb,
86 struct done_list_struct *dl)
87 {
88 struct asd_ha_struct *asd_ha = ascb->ha;
89 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
90 int phy_id = dl->status_block[0] & DL_PHY_MASK;
91 struct asd_phy *phy = &asd_ha->phys[phy_id];
92
93 u8 oob_status = dl->status_block[1] & PHY_EVENTS_STATUS;
94 u8 oob_mode = dl->status_block[2];
95
96 switch (oob_status) {
97 case CURRENT_LOSS_OF_SIGNAL:
98 /* directly attached device was removed */
99 ASD_DPRINTK("phy%d: device unplugged\n", phy_id);
100 asd_turn_led(asd_ha, phy_id, 0);
101 sas_phy_disconnected(&phy->sas_phy);
102 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_LOSS_OF_SIGNAL);
103 break;
104 case CURRENT_OOB_DONE:
105 /* hot plugged device */
106 asd_turn_led(asd_ha, phy_id, 1);
107 get_lrate_mode(phy, oob_mode);
108 ASD_DPRINTK("phy%d device plugged: lrate:0x%x, proto:0x%x\n",
109 phy_id, phy->sas_phy.linkrate, phy->sas_phy.iproto);
110 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_DONE);
111 break;
112 case CURRENT_SPINUP_HOLD:
113 /* hot plug SATA, no COMWAKE sent */
114 asd_turn_led(asd_ha, phy_id, 1);
115 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_SPINUP_HOLD);
116 break;
117 case CURRENT_GTO_TIMEOUT:
118 case CURRENT_OOB_ERROR:
119 ASD_DPRINTK("phy%d error while OOB: oob status:0x%x\n", phy_id,
120 dl->status_block[1]);
121 asd_turn_led(asd_ha, phy_id, 0);
122 sas_phy_disconnected(&phy->sas_phy);
123 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_ERROR);
124 break;
125 }
126 }
127
128 /* If phys are enabled sparsely, this will do the right thing. */
129 static inline unsigned ord_phy(struct asd_ha_struct *asd_ha,
130 struct asd_phy *phy)
131 {
132 u8 enabled_mask = asd_ha->hw_prof.enabled_phys;
133 int i, k = 0;
134
135 for_each_phy(enabled_mask, enabled_mask, i) {
136 if (&asd_ha->phys[i] == phy)
137 return k;
138 k++;
139 }
140 return 0;
141 }
142
143 /**
144 * asd_get_attached_sas_addr -- extract/generate attached SAS address
145 * phy: pointer to asd_phy
146 * sas_addr: pointer to buffer where the SAS address is to be written
147 *
148 * This function extracts the SAS address from an IDENTIFY frame
149 * received. If OOB is SATA, then a SAS address is generated from the
150 * HA tables.
151 *
152 * LOCKING: the frame_rcvd_lock needs to be held since this parses the frame
153 * buffer.
154 */
155 static inline void asd_get_attached_sas_addr(struct asd_phy *phy, u8 *sas_addr)
156 {
157 if (phy->sas_phy.frame_rcvd[0] == 0x34
158 && phy->sas_phy.oob_mode == SATA_OOB_MODE) {
159 struct asd_ha_struct *asd_ha = phy->sas_phy.ha->lldd_ha;
160 /* FIS device-to-host */
161 u64 addr = be64_to_cpu(*(__be64 *)phy->phy_desc->sas_addr);
162
163 addr += asd_ha->hw_prof.sata_name_base + ord_phy(asd_ha, phy);
164 *(__be64 *)sas_addr = cpu_to_be64(addr);
165 } else {
166 struct sas_identify_frame *idframe =
167 (void *) phy->sas_phy.frame_rcvd;
168 memcpy(sas_addr, idframe->sas_addr, SAS_ADDR_SIZE);
169 }
170 }
171
172 static void asd_form_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
173 {
174 int i;
175 struct asd_port *free_port = NULL;
176 struct asd_port *port;
177 struct asd_sas_phy *sas_phy = &phy->sas_phy;
178 unsigned long flags;
179
180 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags);
181 if (!phy->asd_port) {
182 for (i = 0; i < ASD_MAX_PHYS; i++) {
183 port = &asd_ha->asd_ports[i];
184
185 /* Check for wide port */
186 if (port->num_phys > 0 &&
187 memcmp(port->sas_addr, sas_phy->sas_addr,
188 SAS_ADDR_SIZE) == 0 &&
189 memcmp(port->attached_sas_addr,
190 sas_phy->attached_sas_addr,
191 SAS_ADDR_SIZE) == 0) {
192 break;
193 }
194
195 /* Find a free port */
196 if (port->num_phys == 0 && free_port == NULL) {
197 free_port = port;
198 }
199 }
200
201 /* Use a free port if this doesn't form a wide port */
202 if (i >= ASD_MAX_PHYS) {
203 port = free_port;
204 BUG_ON(!port);
205 memcpy(port->sas_addr, sas_phy->sas_addr,
206 SAS_ADDR_SIZE);
207 memcpy(port->attached_sas_addr,
208 sas_phy->attached_sas_addr,
209 SAS_ADDR_SIZE);
210 }
211 port->num_phys++;
212 port->phy_mask |= (1U << sas_phy->id);
213 phy->asd_port = port;
214 }
215 ASD_DPRINTK("%s: updating phy_mask 0x%x for phy%d\n",
216 __FUNCTION__, phy->asd_port->phy_mask, sas_phy->id);
217 asd_update_port_links(asd_ha, phy);
218 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags);
219 }
220
221 static void asd_deform_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
222 {
223 struct asd_port *port = phy->asd_port;
224 struct asd_sas_phy *sas_phy = &phy->sas_phy;
225 unsigned long flags;
226
227 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags);
228 if (port) {
229 port->num_phys--;
230 port->phy_mask &= ~(1U << sas_phy->id);
231 phy->asd_port = NULL;
232 }
233 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags);
234 }
235
236 static inline void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb,
237 struct done_list_struct *dl,
238 int edb_id, int phy_id)
239 {
240 unsigned long flags;
241 int edb_el = edb_id + ascb->edb_index;
242 struct asd_dma_tok *edb = ascb->ha->seq.edb_arr[edb_el];
243 struct asd_phy *phy = &ascb->ha->phys[phy_id];
244 struct sas_ha_struct *sas_ha = phy->sas_phy.ha;
245 u16 size = ((dl->status_block[3] & 7) << 8) | dl->status_block[2];
246
247 size = min(size, (u16) sizeof(phy->frame_rcvd));
248
249 spin_lock_irqsave(&phy->sas_phy.frame_rcvd_lock, flags);
250 memcpy(phy->sas_phy.frame_rcvd, edb->vaddr, size);
251 phy->sas_phy.frame_rcvd_size = size;
252 asd_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr);
253 spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags);
254 asd_dump_frame_rcvd(phy, dl);
255 asd_form_port(ascb->ha, phy);
256 sas_ha->notify_port_event(&phy->sas_phy, PORTE_BYTES_DMAED);
257 }
258
259 static inline void asd_link_reset_err_tasklet(struct asd_ascb *ascb,
260 struct done_list_struct *dl,
261 int phy_id)
262 {
263 struct asd_ha_struct *asd_ha = ascb->ha;
264 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
265 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
266 struct asd_phy *phy = &asd_ha->phys[phy_id];
267 u8 lr_error = dl->status_block[1];
268 u8 retries_left = dl->status_block[2];
269
270 switch (lr_error) {
271 case 0:
272 ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id);
273 break;
274 case 1:
275 ASD_DPRINTK("phy%d: Loss of signal\n", phy_id);
276 break;
277 case 2:
278 ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id);
279 break;
280 case 3:
281 ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id);
282 break;
283 default:
284 ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n",
285 phy_id, lr_error);
286 break;
287 }
288
289 asd_turn_led(asd_ha, phy_id, 0);
290 sas_phy_disconnected(sas_phy);
291 asd_deform_port(asd_ha, phy);
292 sas_ha->notify_port_event(sas_phy, PORTE_LINK_RESET_ERR);
293
294 if (retries_left == 0) {
295 int num = 1;
296 struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num,
297 GFP_ATOMIC);
298 if (!cp) {
299 asd_printk("%s: out of memory\n", __FUNCTION__);
300 goto out;
301 }
302 ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n",
303 phy_id);
304 asd_build_control_phy(cp, phy_id, ENABLE_PHY);
305 if (asd_post_ascb_list(ascb->ha, cp, 1) != 0)
306 asd_ascb_free(cp);
307 }
308 out:
309 ;
310 }
311
312 static inline void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb,
313 struct done_list_struct *dl,
314 int phy_id)
315 {
316 unsigned long flags;
317 struct sas_ha_struct *sas_ha = &ascb->ha->sas_ha;
318 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
319 struct asd_ha_struct *asd_ha = ascb->ha;
320 struct asd_phy *phy = &asd_ha->phys[phy_id];
321 u8 reg = dl->status_block[1];
322 u32 cont = dl->status_block[2] << ((reg & 3)*8);
323
324 reg &= ~3;
325 switch (reg) {
326 case LmPRMSTAT0BYTE0:
327 switch (cont) {
328 case LmBROADCH:
329 case LmBROADRVCH0:
330 case LmBROADRVCH1:
331 case LmBROADSES:
332 ASD_DPRINTK("phy%d: BROADCAST change received:%d\n",
333 phy_id, cont);
334 spin_lock_irqsave(&sas_phy->sas_prim_lock, flags);
335 sas_phy->sas_prim = ffs(cont);
336 spin_unlock_irqrestore(&sas_phy->sas_prim_lock, flags);
337 sas_ha->notify_port_event(sas_phy,PORTE_BROADCAST_RCVD);
338 break;
339
340 case LmUNKNOWNP:
341 ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id);
342 break;
343
344 default:
345 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
346 phy_id, reg, cont);
347 break;
348 }
349 break;
350 case LmPRMSTAT1BYTE0:
351 switch (cont) {
352 case LmHARDRST:
353 ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n",
354 phy_id);
355 /* The sequencer disables all phys on that port.
356 * We have to re-enable the phys ourselves. */
357 asd_deform_port(asd_ha, phy);
358 sas_ha->notify_port_event(sas_phy, PORTE_HARD_RESET);
359 break;
360
361 default:
362 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
363 phy_id, reg, cont);
364 break;
365 }
366 break;
367 default:
368 ASD_DPRINTK("unknown primitive register:0x%x\n",
369 dl->status_block[1]);
370 break;
371 }
372 }
373
374 /**
375 * asd_invalidate_edb -- invalidate an EDB and if necessary post the ESCB
376 * @ascb: pointer to Empty SCB
377 * @edb_id: index [0,6] to the empty data buffer which is to be invalidated
378 *
379 * After an EDB has been invalidated, if all EDBs in this ESCB have been
380 * invalidated, the ESCB is posted back to the sequencer.
381 * Context is tasklet/IRQ.
382 */
383 void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id)
384 {
385 struct asd_seq_data *seq = &ascb->ha->seq;
386 struct empty_scb *escb = &ascb->scb->escb;
387 struct sg_el *eb = &escb->eb[edb_id];
388 struct asd_dma_tok *edb = seq->edb_arr[ascb->edb_index + edb_id];
389
390 memset(edb->vaddr, 0, ASD_EDB_SIZE);
391 eb->flags |= ELEMENT_NOT_VALID;
392 escb->num_valid--;
393
394 if (escb->num_valid == 0) {
395 int i;
396 /* ASD_DPRINTK("reposting escb: vaddr: 0x%p, "
397 "dma_handle: 0x%08llx, next: 0x%08llx, "
398 "index:%d, opcode:0x%02x\n",
399 ascb->dma_scb.vaddr,
400 (u64)ascb->dma_scb.dma_handle,
401 le64_to_cpu(ascb->scb->header.next_scb),
402 le16_to_cpu(ascb->scb->header.index),
403 ascb->scb->header.opcode);
404 */
405 escb->num_valid = ASD_EDBS_PER_SCB;
406 for (i = 0; i < ASD_EDBS_PER_SCB; i++)
407 escb->eb[i].flags = 0;
408 if (!list_empty(&ascb->list))
409 list_del_init(&ascb->list);
410 i = asd_post_escb_list(ascb->ha, ascb, 1);
411 if (i)
412 asd_printk("couldn't post escb, err:%d\n", i);
413 }
414 }
415
416 static void escb_tasklet_complete(struct asd_ascb *ascb,
417 struct done_list_struct *dl)
418 {
419 struct asd_ha_struct *asd_ha = ascb->ha;
420 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
421 int edb = (dl->opcode & DL_PHY_MASK) - 1; /* [0xc1,0xc7] -> [0,6] */
422 u8 sb_opcode = dl->status_block[0];
423 int phy_id = sb_opcode & DL_PHY_MASK;
424 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
425 struct asd_phy *phy = &asd_ha->phys[phy_id];
426
427 if (edb > 6 || edb < 0) {
428 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
429 edb, dl->opcode);
430 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
431 sb_opcode, phy_id);
432 ASD_DPRINTK("escb: vaddr: 0x%p, "
433 "dma_handle: 0x%llx, next: 0x%llx, "
434 "index:%d, opcode:0x%02x\n",
435 ascb->dma_scb.vaddr,
436 (unsigned long long)ascb->dma_scb.dma_handle,
437 (unsigned long long)
438 le64_to_cpu(ascb->scb->header.next_scb),
439 le16_to_cpu(ascb->scb->header.index),
440 ascb->scb->header.opcode);
441 }
442
443 /* Catch these before we mask off the sb_opcode bits */
444 switch (sb_opcode) {
445 case REQ_TASK_ABORT: {
446 struct asd_ascb *a, *b;
447 u16 tc_abort;
448 struct domain_device *failed_dev = NULL;
449
450 ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n",
451 __FUNCTION__, dl->status_block[3]);
452
453 /*
454 * Find the task that caused the abort and abort it first.
455 * The sequencer won't put anything on the done list until
456 * that happens.
457 */
458 tc_abort = *((u16*)(&dl->status_block[1]));
459 tc_abort = le16_to_cpu(tc_abort);
460
461 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) {
462 struct sas_task *task = ascb->uldd_task;
463
464 if (task && a->tc_index == tc_abort) {
465 failed_dev = task->dev;
466 sas_task_abort(task);
467 break;
468 }
469 }
470
471 if (!failed_dev) {
472 ASD_DPRINTK("%s: Can't find task (tc=%d) to abort!\n",
473 __FUNCTION__, tc_abort);
474 goto out;
475 }
476
477 /*
478 * Now abort everything else for that device (hba?) so
479 * that the EH will wake up and do something.
480 */
481 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) {
482 struct sas_task *task = ascb->uldd_task;
483
484 if (task &&
485 task->dev == failed_dev &&
486 a->tc_index != tc_abort)
487 sas_task_abort(task);
488 }
489
490 goto out;
491 }
492 case REQ_DEVICE_RESET: {
493 struct asd_ascb *a;
494 u16 conn_handle;
495 unsigned long flags;
496 struct sas_task *last_dev_task = NULL;
497
498 conn_handle = *((u16*)(&dl->status_block[1]));
499 conn_handle = le16_to_cpu(conn_handle);
500
501 ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __FUNCTION__,
502 dl->status_block[3]);
503
504 /* Find the last pending task for the device... */
505 list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
506 u16 x;
507 struct domain_device *dev;
508 struct sas_task *task = a->uldd_task;
509
510 if (!task)
511 continue;
512 dev = task->dev;
513
514 x = (unsigned long)dev->lldd_dev;
515 if (x == conn_handle)
516 last_dev_task = task;
517 }
518
519 if (!last_dev_task) {
520 ASD_DPRINTK("%s: Device reset for idle device %d?\n",
521 __FUNCTION__, conn_handle);
522 goto out;
523 }
524
525 /* ...and set the reset flag */
526 spin_lock_irqsave(&last_dev_task->task_state_lock, flags);
527 last_dev_task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
528 spin_unlock_irqrestore(&last_dev_task->task_state_lock, flags);
529
530 /* Kill all pending tasks for the device */
531 list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
532 u16 x;
533 struct domain_device *dev;
534 struct sas_task *task = a->uldd_task;
535
536 if (!task)
537 continue;
538 dev = task->dev;
539
540 x = (unsigned long)dev->lldd_dev;
541 if (x == conn_handle)
542 sas_task_abort(task);
543 }
544
545 goto out;
546 }
547 case SIGNAL_NCQ_ERROR:
548 ASD_DPRINTK("%s: SIGNAL_NCQ_ERROR\n", __FUNCTION__);
549 goto out;
550 case CLEAR_NCQ_ERROR:
551 ASD_DPRINTK("%s: CLEAR_NCQ_ERROR\n", __FUNCTION__);
552 goto out;
553 }
554
555 sb_opcode &= ~DL_PHY_MASK;
556
557 switch (sb_opcode) {
558 case BYTES_DMAED:
559 ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __FUNCTION__, phy_id);
560 asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id);
561 break;
562 case PRIMITIVE_RECVD:
563 ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __FUNCTION__,
564 phy_id);
565 asd_primitive_rcvd_tasklet(ascb, dl, phy_id);
566 break;
567 case PHY_EVENT:
568 ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __FUNCTION__, phy_id);
569 asd_phy_event_tasklet(ascb, dl);
570 break;
571 case LINK_RESET_ERROR:
572 ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __FUNCTION__,
573 phy_id);
574 asd_link_reset_err_tasklet(ascb, dl, phy_id);
575 break;
576 case TIMER_EVENT:
577 ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n",
578 __FUNCTION__, phy_id);
579 asd_turn_led(asd_ha, phy_id, 0);
580 /* the device is gone */
581 sas_phy_disconnected(sas_phy);
582 asd_deform_port(asd_ha, phy);
583 sas_ha->notify_port_event(sas_phy, PORTE_TIMER_EVENT);
584 break;
585 default:
586 ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __FUNCTION__,
587 phy_id, sb_opcode);
588 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
589 edb, dl->opcode);
590 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
591 sb_opcode, phy_id);
592 ASD_DPRINTK("escb: vaddr: 0x%p, "
593 "dma_handle: 0x%llx, next: 0x%llx, "
594 "index:%d, opcode:0x%02x\n",
595 ascb->dma_scb.vaddr,
596 (unsigned long long)ascb->dma_scb.dma_handle,
597 (unsigned long long)
598 le64_to_cpu(ascb->scb->header.next_scb),
599 le16_to_cpu(ascb->scb->header.index),
600 ascb->scb->header.opcode);
601
602 break;
603 }
604 out:
605 asd_invalidate_edb(ascb, edb);
606 }
607
608 int asd_init_post_escbs(struct asd_ha_struct *asd_ha)
609 {
610 struct asd_seq_data *seq = &asd_ha->seq;
611 int i;
612
613 for (i = 0; i < seq->num_escbs; i++)
614 seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete;
615
616 ASD_DPRINTK("posting %d escbs\n", i);
617 return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs);
618 }
619
620 /* ---------- CONTROL PHY ---------- */
621
622 #define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \
623 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
624 | CURRENT_OOB_ERROR)
625
626 /**
627 * control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb
628 * @ascb: pointer to an ascb
629 * @dl: pointer to the done list entry
630 *
631 * This function completes a CONTROL PHY scb and frees the ascb.
632 * A note on LEDs:
633 * - an LED blinks if there is IO though it,
634 * - if a device is connected to the LED, it is lit,
635 * - if no device is connected to the LED, is is dimmed (off).
636 */
637 static void control_phy_tasklet_complete(struct asd_ascb *ascb,
638 struct done_list_struct *dl)
639 {
640 struct asd_ha_struct *asd_ha = ascb->ha;
641 struct scb *scb = ascb->scb;
642 struct control_phy *control_phy = &scb->control_phy;
643 u8 phy_id = control_phy->phy_id;
644 struct asd_phy *phy = &ascb->ha->phys[phy_id];
645
646 u8 status = dl->status_block[0];
647 u8 oob_status = dl->status_block[1];
648 u8 oob_mode = dl->status_block[2];
649 /* u8 oob_signals= dl->status_block[3]; */
650
651 if (status != 0) {
652 ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n",
653 __FUNCTION__, phy_id, status);
654 goto out;
655 }
656
657 switch (control_phy->sub_func) {
658 case DISABLE_PHY:
659 asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id);
660 asd_turn_led(asd_ha, phy_id, 0);
661 asd_control_led(asd_ha, phy_id, 0);
662 ASD_DPRINTK("%s: disable phy%d\n", __FUNCTION__, phy_id);
663 break;
664
665 case ENABLE_PHY:
666 asd_control_led(asd_ha, phy_id, 1);
667 if (oob_status & CURRENT_OOB_DONE) {
668 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
669 get_lrate_mode(phy, oob_mode);
670 asd_turn_led(asd_ha, phy_id, 1);
671 ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n",
672 __FUNCTION__, phy_id,phy->sas_phy.linkrate,
673 phy->sas_phy.iproto);
674 } else if (oob_status & CURRENT_SPINUP_HOLD) {
675 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
676 asd_turn_led(asd_ha, phy_id, 1);
677 ASD_DPRINTK("%s: phy%d, spinup hold\n", __FUNCTION__,
678 phy_id);
679 } else if (oob_status & CURRENT_ERR_MASK) {
680 asd_turn_led(asd_ha, phy_id, 0);
681 ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n",
682 __FUNCTION__, phy_id, oob_status);
683 } else if (oob_status & (CURRENT_HOT_PLUG_CNCT
684 | CURRENT_DEVICE_PRESENT)) {
685 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
686 asd_turn_led(asd_ha, phy_id, 1);
687 ASD_DPRINTK("%s: phy%d: hot plug or device present\n",
688 __FUNCTION__, phy_id);
689 } else {
690 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
691 asd_turn_led(asd_ha, phy_id, 0);
692 ASD_DPRINTK("%s: phy%d: no device present: "
693 "oob_status:0x%x\n",
694 __FUNCTION__, phy_id, oob_status);
695 }
696 break;
697 case RELEASE_SPINUP_HOLD:
698 case PHY_NO_OP:
699 case EXECUTE_HARD_RESET:
700 ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __FUNCTION__,
701 phy_id, control_phy->sub_func);
702 /* XXX finish */
703 break;
704 default:
705 ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __FUNCTION__,
706 phy_id, control_phy->sub_func);
707 break;
708 }
709 out:
710 asd_ascb_free(ascb);
711 }
712
713 static inline void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd)
714 {
715 /* disable all speeds, then enable defaults */
716 *speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS
717 | SATA_SPEED_30_DIS | SATA_SPEED_15_DIS;
718
719 switch (pd->max_sas_lrate) {
720 case SAS_LINK_RATE_6_0_GBPS:
721 *speed_mask &= ~SAS_SPEED_60_DIS;
722 default:
723 case SAS_LINK_RATE_3_0_GBPS:
724 *speed_mask &= ~SAS_SPEED_30_DIS;
725 case SAS_LINK_RATE_1_5_GBPS:
726 *speed_mask &= ~SAS_SPEED_15_DIS;
727 }
728
729 switch (pd->min_sas_lrate) {
730 case SAS_LINK_RATE_6_0_GBPS:
731 *speed_mask |= SAS_SPEED_30_DIS;
732 case SAS_LINK_RATE_3_0_GBPS:
733 *speed_mask |= SAS_SPEED_15_DIS;
734 default:
735 case SAS_LINK_RATE_1_5_GBPS:
736 /* nothing to do */
737 ;
738 }
739
740 switch (pd->max_sata_lrate) {
741 case SAS_LINK_RATE_3_0_GBPS:
742 *speed_mask &= ~SATA_SPEED_30_DIS;
743 default:
744 case SAS_LINK_RATE_1_5_GBPS:
745 *speed_mask &= ~SATA_SPEED_15_DIS;
746 }
747
748 switch (pd->min_sata_lrate) {
749 case SAS_LINK_RATE_3_0_GBPS:
750 *speed_mask |= SATA_SPEED_15_DIS;
751 default:
752 case SAS_LINK_RATE_1_5_GBPS:
753 /* nothing to do */
754 ;
755 }
756 }
757
758 /**
759 * asd_build_control_phy -- build a CONTROL PHY SCB
760 * @ascb: pointer to an ascb
761 * @phy_id: phy id to control, integer
762 * @subfunc: subfunction, what to actually to do the phy
763 *
764 * This function builds a CONTROL PHY scb. No allocation of any kind
765 * is performed. @ascb is allocated with the list function.
766 * The caller can override the ascb->tasklet_complete to point
767 * to its own callback function. It must call asd_ascb_free()
768 * at its tasklet complete function.
769 * See the default implementation.
770 */
771 void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc)
772 {
773 struct asd_phy *phy = &ascb->ha->phys[phy_id];
774 struct scb *scb = ascb->scb;
775 struct control_phy *control_phy = &scb->control_phy;
776
777 scb->header.opcode = CONTROL_PHY;
778 control_phy->phy_id = (u8) phy_id;
779 control_phy->sub_func = subfunc;
780
781 switch (subfunc) {
782 case EXECUTE_HARD_RESET: /* 0x81 */
783 case ENABLE_PHY: /* 0x01 */
784 /* decide hot plug delay */
785 control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT;
786
787 /* decide speed mask */
788 set_speed_mask(&control_phy->speed_mask, phy->phy_desc);
789
790 /* initiator port settings are in the hi nibble */
791 if (phy->sas_phy.role == PHY_ROLE_INITIATOR)
792 control_phy->port_type = SAS_PROTO_ALL << 4;
793 else if (phy->sas_phy.role == PHY_ROLE_TARGET)
794 control_phy->port_type = SAS_PROTO_ALL;
795 else
796 control_phy->port_type =
797 (SAS_PROTO_ALL << 4) | SAS_PROTO_ALL;
798
799 /* link reset retries, this should be nominal */
800 control_phy->link_reset_retries = 10;
801
802 case RELEASE_SPINUP_HOLD: /* 0x02 */
803 /* decide the func_mask */
804 control_phy->func_mask = FUNCTION_MASK_DEFAULT;
805 if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD)
806 control_phy->func_mask &= ~SPINUP_HOLD_DIS;
807 else
808 control_phy->func_mask |= SPINUP_HOLD_DIS;
809 }
810
811 control_phy->conn_handle = cpu_to_le16(0xFFFF);
812
813 ascb->tasklet_complete = control_phy_tasklet_complete;
814 }
815
816 /* ---------- INITIATE LINK ADM TASK ---------- */
817
818 static void link_adm_tasklet_complete(struct asd_ascb *ascb,
819 struct done_list_struct *dl)
820 {
821 u8 opcode = dl->opcode;
822 struct initiate_link_adm *link_adm = &ascb->scb->link_adm;
823 u8 phy_id = link_adm->phy_id;
824
825 if (opcode != TC_NO_ERROR) {
826 asd_printk("phy%d: link adm task 0x%x completed with error "
827 "0x%x\n", phy_id, link_adm->sub_func, opcode);
828 }
829 ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n",
830 phy_id, link_adm->sub_func, opcode);
831
832 asd_ascb_free(ascb);
833 }
834
835 void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id,
836 u8 subfunc)
837 {
838 struct scb *scb = ascb->scb;
839 struct initiate_link_adm *link_adm = &scb->link_adm;
840
841 scb->header.opcode = INITIATE_LINK_ADM_TASK;
842
843 link_adm->phy_id = phy_id;
844 link_adm->sub_func = subfunc;
845 link_adm->conn_handle = cpu_to_le16(0xFFFF);
846
847 ascb->tasklet_complete = link_adm_tasklet_complete;
848 }
849
850 /* ---------- SCB timer ---------- */
851
852 /**
853 * asd_ascb_timedout -- called when a pending SCB's timer has expired
854 * @data: unsigned long, a pointer to the ascb in question
855 *
856 * This is the default timeout function which does the most necessary.
857 * Upper layers can implement their own timeout function, say to free
858 * resources they have with this SCB, and then call this one at the
859 * end of their timeout function. To do this, one should initialize
860 * the ascb->timer.{function, data, expires} prior to calling the post
861 * funcion. The timer is started by the post function.
862 */
863 void asd_ascb_timedout(unsigned long data)
864 {
865 struct asd_ascb *ascb = (void *) data;
866 struct asd_seq_data *seq = &ascb->ha->seq;
867 unsigned long flags;
868
869 ASD_DPRINTK("scb:0x%x timed out\n", ascb->scb->header.opcode);
870
871 spin_lock_irqsave(&seq->pend_q_lock, flags);
872 seq->pending--;
873 list_del_init(&ascb->list);
874 spin_unlock_irqrestore(&seq->pend_q_lock, flags);
875
876 asd_ascb_free(ascb);
877 }
878
879 /* ---------- CONTROL PHY ---------- */
880
881 /* Given the spec value, return a driver value. */
882 static const int phy_func_table[] = {
883 [PHY_FUNC_NOP] = PHY_NO_OP,
884 [PHY_FUNC_LINK_RESET] = ENABLE_PHY,
885 [PHY_FUNC_HARD_RESET] = EXECUTE_HARD_RESET,
886 [PHY_FUNC_DISABLE] = DISABLE_PHY,
887 [PHY_FUNC_RELEASE_SPINUP_HOLD] = RELEASE_SPINUP_HOLD,
888 };
889
890 int asd_control_phy(struct asd_sas_phy *phy, enum phy_func func, void *arg)
891 {
892 struct asd_ha_struct *asd_ha = phy->ha->lldd_ha;
893 struct asd_phy_desc *pd = asd_ha->phys[phy->id].phy_desc;
894 struct asd_ascb *ascb;
895 struct sas_phy_linkrates *rates;
896 int res = 1;
897
898 switch (func) {
899 case PHY_FUNC_CLEAR_ERROR_LOG:
900 return -ENOSYS;
901 case PHY_FUNC_SET_LINK_RATE:
902 rates = arg;
903 if (rates->minimum_linkrate) {
904 pd->min_sas_lrate = rates->minimum_linkrate;
905 pd->min_sata_lrate = rates->minimum_linkrate;
906 }
907 if (rates->maximum_linkrate) {
908 pd->max_sas_lrate = rates->maximum_linkrate;
909 pd->max_sata_lrate = rates->maximum_linkrate;
910 }
911 func = PHY_FUNC_LINK_RESET;
912 break;
913 default:
914 break;
915 }
916
917 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
918 if (!ascb)
919 return -ENOMEM;
920
921 asd_build_control_phy(ascb, phy->id, phy_func_table[func]);
922 res = asd_post_ascb_list(asd_ha, ascb , 1);
923 if (res)
924 asd_ascb_free(ascb);
925
926 return res;
927 }
linux v2.6.22.y-op