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[PATCH] aic94xx: handle REQ_DEVICE_RESET
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / aic94xx / aic94xx_scb.c
bloba014418d670e661731ca552d8b425ceca9fab48d
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 inline void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb,
173 struct done_list_struct *dl,
174 int edb_id, int phy_id)
175 {
176 unsigned long flags;
177 int edb_el = edb_id + ascb->edb_index;
178 struct asd_dma_tok *edb = ascb->ha->seq.edb_arr[edb_el];
179 struct asd_phy *phy = &ascb->ha->phys[phy_id];
180 struct sas_ha_struct *sas_ha = phy->sas_phy.ha;
181 u16 size = ((dl->status_block[3] & 7) << 8) | dl->status_block[2];
182
183 size = min(size, (u16) sizeof(phy->frame_rcvd));
184
185 spin_lock_irqsave(&phy->sas_phy.frame_rcvd_lock, flags);
186 memcpy(phy->sas_phy.frame_rcvd, edb->vaddr, size);
187 phy->sas_phy.frame_rcvd_size = size;
188 asd_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr);
189 spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags);
190 asd_dump_frame_rcvd(phy, dl);
191 sas_ha->notify_port_event(&phy->sas_phy, PORTE_BYTES_DMAED);
192 }
193
194 static inline void asd_link_reset_err_tasklet(struct asd_ascb *ascb,
195 struct done_list_struct *dl,
196 int phy_id)
197 {
198 struct asd_ha_struct *asd_ha = ascb->ha;
199 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
200 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
201 u8 lr_error = dl->status_block[1];
202 u8 retries_left = dl->status_block[2];
203
204 switch (lr_error) {
205 case 0:
206 ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id);
207 break;
208 case 1:
209 ASD_DPRINTK("phy%d: Loss of signal\n", phy_id);
210 break;
211 case 2:
212 ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id);
213 break;
214 case 3:
215 ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id);
216 break;
217 default:
218 ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n",
219 phy_id, lr_error);
220 break;
221 }
222
223 asd_turn_led(asd_ha, phy_id, 0);
224 sas_phy_disconnected(sas_phy);
225 sas_ha->notify_port_event(sas_phy, PORTE_LINK_RESET_ERR);
226
227 if (retries_left == 0) {
228 int num = 1;
229 struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num,
230 GFP_ATOMIC);
231 if (!cp) {
232 asd_printk("%s: out of memory\n", __FUNCTION__);
233 goto out;
234 }
235 ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n",
236 phy_id);
237 asd_build_control_phy(cp, phy_id, ENABLE_PHY);
238 if (asd_post_ascb_list(ascb->ha, cp, 1) != 0)
239 asd_ascb_free(cp);
240 }
241 out:
242 ;
243 }
244
245 static inline void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb,
246 struct done_list_struct *dl,
247 int phy_id)
248 {
249 unsigned long flags;
250 struct sas_ha_struct *sas_ha = &ascb->ha->sas_ha;
251 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
252 u8 reg = dl->status_block[1];
253 u32 cont = dl->status_block[2] << ((reg & 3)*8);
254
255 reg &= ~3;
256 switch (reg) {
257 case LmPRMSTAT0BYTE0:
258 switch (cont) {
259 case LmBROADCH:
260 case LmBROADRVCH0:
261 case LmBROADRVCH1:
262 case LmBROADSES:
263 ASD_DPRINTK("phy%d: BROADCAST change received:%d\n",
264 phy_id, cont);
265 spin_lock_irqsave(&sas_phy->sas_prim_lock, flags);
266 sas_phy->sas_prim = ffs(cont);
267 spin_unlock_irqrestore(&sas_phy->sas_prim_lock, flags);
268 sas_ha->notify_port_event(sas_phy,PORTE_BROADCAST_RCVD);
269 break;
270
271 case LmUNKNOWNP:
272 ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id);
273 break;
274
275 default:
276 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
277 phy_id, reg, cont);
278 break;
279 }
280 break;
281 case LmPRMSTAT1BYTE0:
282 switch (cont) {
283 case LmHARDRST:
284 ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n",
285 phy_id);
286 /* The sequencer disables all phys on that port.
287 * We have to re-enable the phys ourselves. */
288 sas_ha->notify_port_event(sas_phy, PORTE_HARD_RESET);
289 break;
290
291 default:
292 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
293 phy_id, reg, cont);
294 break;
295 }
296 break;
297 default:
298 ASD_DPRINTK("unknown primitive register:0x%x\n",
299 dl->status_block[1]);
300 break;
301 }
302 }
303
304 /**
305 * asd_invalidate_edb -- invalidate an EDB and if necessary post the ESCB
306 * @ascb: pointer to Empty SCB
307 * @edb_id: index [0,6] to the empty data buffer which is to be invalidated
308 *
309 * After an EDB has been invalidated, if all EDBs in this ESCB have been
310 * invalidated, the ESCB is posted back to the sequencer.
311 * Context is tasklet/IRQ.
312 */
313 void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id)
314 {
315 struct asd_seq_data *seq = &ascb->ha->seq;
316 struct empty_scb *escb = &ascb->scb->escb;
317 struct sg_el *eb = &escb->eb[edb_id];
318 struct asd_dma_tok *edb = seq->edb_arr[ascb->edb_index + edb_id];
319
320 memset(edb->vaddr, 0, ASD_EDB_SIZE);
321 eb->flags |= ELEMENT_NOT_VALID;
322 escb->num_valid--;
323
324 if (escb->num_valid == 0) {
325 int i;
326 /* ASD_DPRINTK("reposting escb: vaddr: 0x%p, "
327 "dma_handle: 0x%08llx, next: 0x%08llx, "
328 "index:%d, opcode:0x%02x\n",
329 ascb->dma_scb.vaddr,
330 (u64)ascb->dma_scb.dma_handle,
331 le64_to_cpu(ascb->scb->header.next_scb),
332 le16_to_cpu(ascb->scb->header.index),
333 ascb->scb->header.opcode);
334 */
335 escb->num_valid = ASD_EDBS_PER_SCB;
336 for (i = 0; i < ASD_EDBS_PER_SCB; i++)
337 escb->eb[i].flags = 0;
338 if (!list_empty(&ascb->list))
339 list_del_init(&ascb->list);
340 i = asd_post_escb_list(ascb->ha, ascb, 1);
341 if (i)
342 asd_printk("couldn't post escb, err:%d\n", i);
343 }
344 }
345
346 /* hard reset a phy later */
347 static void do_phy_reset_later(void *data)
348 {
349 struct sas_phy *sas_phy = data;
350 int error;
351
352 ASD_DPRINTK("%s: About to hard reset phy %d\n", __FUNCTION__,
353 sas_phy->identify.phy_identifier);
354 /* Reset device port */
355 error = sas_phy_reset(sas_phy, 1);
356 if (error)
357 ASD_DPRINTK("%s: Hard reset of phy %d failed (%d).\n",
358 __FUNCTION__, sas_phy->identify.phy_identifier, error);
359 }
360
361 static void phy_reset_later(struct sas_phy *sas_phy, struct Scsi_Host *shost)
362 {
363 INIT_WORK(&sas_phy->reset_work, do_phy_reset_later, sas_phy);
364 queue_work(shost->work_q, &sas_phy->reset_work);
365 }
366
367 /* start up the ABORT TASK tmf... */
368 static void task_kill_later(struct asd_ascb *ascb)
369 {
370 struct asd_ha_struct *asd_ha = ascb->ha;
371 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
372 struct Scsi_Host *shost = sas_ha->core.shost;
373 struct sas_task *task = ascb->uldd_task;
374
375 INIT_WORK(&task->abort_work, (void (*)(void *))sas_task_abort, task);
376 queue_work(shost->work_q, &task->abort_work);
377 }
378
379 static void escb_tasklet_complete(struct asd_ascb *ascb,
380 struct done_list_struct *dl)
381 {
382 struct asd_ha_struct *asd_ha = ascb->ha;
383 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
384 int edb = (dl->opcode & DL_PHY_MASK) - 1; /* [0xc1,0xc7] -> [0,6] */
385 u8 sb_opcode = dl->status_block[0];
386 int phy_id = sb_opcode & DL_PHY_MASK;
387 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
388
389 if (edb > 6 || edb < 0) {
390 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
391 edb, dl->opcode);
392 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
393 sb_opcode, phy_id);
394 ASD_DPRINTK("escb: vaddr: 0x%p, "
395 "dma_handle: 0x%llx, next: 0x%llx, "
396 "index:%d, opcode:0x%02x\n",
397 ascb->dma_scb.vaddr,
398 (unsigned long long)ascb->dma_scb.dma_handle,
399 (unsigned long long)
400 le64_to_cpu(ascb->scb->header.next_scb),
401 le16_to_cpu(ascb->scb->header.index),
402 ascb->scb->header.opcode);
403 }
404
405 /* Catch these before we mask off the sb_opcode bits */
406 switch (sb_opcode) {
407 case REQ_TASK_ABORT: {
408 struct asd_ascb *a, *b;
409 u16 tc_abort;
410
411 tc_abort = *((u16*)(&dl->status_block[1]));
412 tc_abort = le16_to_cpu(tc_abort);
413
414 ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n",
415 __FUNCTION__, dl->status_block[3]);
416
417 /* Find the pending task and abort it. */
418 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list)
419 if (a->tc_index == tc_abort) {
420 task_kill_later(a);
421 break;
422 }
423 goto out;
424 }
425 case REQ_DEVICE_RESET: {
426 struct Scsi_Host *shost = sas_ha->core.shost;
427 struct sas_phy *dev_phy;
428 struct asd_ascb *a;
429 u16 conn_handle;
430
431 conn_handle = *((u16*)(&dl->status_block[1]));
432 conn_handle = le16_to_cpu(conn_handle);
433
434 ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __FUNCTION__,
435 dl->status_block[3]);
436
437 /* Kill all pending tasks and reset the device */
438 dev_phy = NULL;
439 list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
440 struct sas_task *task;
441 struct domain_device *dev;
442 u16 x;
443
444 task = a->uldd_task;
445 if (!task)
446 continue;
447 dev = task->dev;
448
449 x = (u16)dev->lldd_dev;
450 if (x == conn_handle) {
451 dev_phy = dev->port->phy;
452 task_kill_later(a);
453 }
454 }
455
456 /* Reset device port */
457 if (!dev_phy) {
458 ASD_DPRINTK("%s: No pending commands; can't reset.\n",
459 __FUNCTION__);
460 goto out;
461 }
462 phy_reset_later(dev_phy, shost);
463 goto out;
464 }
465 case SIGNAL_NCQ_ERROR:
466 ASD_DPRINTK("%s: SIGNAL_NCQ_ERROR\n", __FUNCTION__);
467 goto out;
468 case CLEAR_NCQ_ERROR:
469 ASD_DPRINTK("%s: CLEAR_NCQ_ERROR\n", __FUNCTION__);
470 goto out;
471 }
472
473 sb_opcode &= ~DL_PHY_MASK;
474
475 switch (sb_opcode) {
476 case BYTES_DMAED:
477 ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __FUNCTION__, phy_id);
478 asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id);
479 break;
480 case PRIMITIVE_RECVD:
481 ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __FUNCTION__,
482 phy_id);
483 asd_primitive_rcvd_tasklet(ascb, dl, phy_id);
484 break;
485 case PHY_EVENT:
486 ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __FUNCTION__, phy_id);
487 asd_phy_event_tasklet(ascb, dl);
488 break;
489 case LINK_RESET_ERROR:
490 ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __FUNCTION__,
491 phy_id);
492 asd_link_reset_err_tasklet(ascb, dl, phy_id);
493 break;
494 case TIMER_EVENT:
495 ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n",
496 __FUNCTION__, phy_id);
497 asd_turn_led(asd_ha, phy_id, 0);
498 /* the device is gone */
499 sas_phy_disconnected(sas_phy);
500 sas_ha->notify_port_event(sas_phy, PORTE_TIMER_EVENT);
501 break;
502 default:
503 ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __FUNCTION__,
504 phy_id, sb_opcode);
505 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
506 edb, dl->opcode);
507 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
508 sb_opcode, phy_id);
509 ASD_DPRINTK("escb: vaddr: 0x%p, "
510 "dma_handle: 0x%llx, next: 0x%llx, "
511 "index:%d, opcode:0x%02x\n",
512 ascb->dma_scb.vaddr,
513 (unsigned long long)ascb->dma_scb.dma_handle,
514 (unsigned long long)
515 le64_to_cpu(ascb->scb->header.next_scb),
516 le16_to_cpu(ascb->scb->header.index),
517 ascb->scb->header.opcode);
518
519 break;
520 }
521 out:
522 asd_invalidate_edb(ascb, edb);
523 }
524
525 int asd_init_post_escbs(struct asd_ha_struct *asd_ha)
526 {
527 struct asd_seq_data *seq = &asd_ha->seq;
528 int i;
529
530 for (i = 0; i < seq->num_escbs; i++)
531 seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete;
532
533 ASD_DPRINTK("posting %d escbs\n", i);
534 return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs);
535 }
536
537 /* ---------- CONTROL PHY ---------- */
538
539 #define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \
540 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
541 | CURRENT_OOB_ERROR)
542
543 /**
544 * control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb
545 * @ascb: pointer to an ascb
546 * @dl: pointer to the done list entry
547 *
548 * This function completes a CONTROL PHY scb and frees the ascb.
549 * A note on LEDs:
550 * - an LED blinks if there is IO though it,
551 * - if a device is connected to the LED, it is lit,
552 * - if no device is connected to the LED, is is dimmed (off).
553 */
554 static void control_phy_tasklet_complete(struct asd_ascb *ascb,
555 struct done_list_struct *dl)
556 {
557 struct asd_ha_struct *asd_ha = ascb->ha;
558 struct scb *scb = ascb->scb;
559 struct control_phy *control_phy = &scb->control_phy;
560 u8 phy_id = control_phy->phy_id;
561 struct asd_phy *phy = &ascb->ha->phys[phy_id];
562
563 u8 status = dl->status_block[0];
564 u8 oob_status = dl->status_block[1];
565 u8 oob_mode = dl->status_block[2];
566 /* u8 oob_signals= dl->status_block[3]; */
567
568 if (status != 0) {
569 ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n",
570 __FUNCTION__, phy_id, status);
571 goto out;
572 }
573
574 switch (control_phy->sub_func) {
575 case DISABLE_PHY:
576 asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id);
577 asd_turn_led(asd_ha, phy_id, 0);
578 asd_control_led(asd_ha, phy_id, 0);
579 ASD_DPRINTK("%s: disable phy%d\n", __FUNCTION__, phy_id);
580 break;
581
582 case ENABLE_PHY:
583 asd_control_led(asd_ha, phy_id, 1);
584 if (oob_status & CURRENT_OOB_DONE) {
585 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
586 get_lrate_mode(phy, oob_mode);
587 asd_turn_led(asd_ha, phy_id, 1);
588 ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n",
589 __FUNCTION__, phy_id,phy->sas_phy.linkrate,
590 phy->sas_phy.iproto);
591 } else if (oob_status & CURRENT_SPINUP_HOLD) {
592 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
593 asd_turn_led(asd_ha, phy_id, 1);
594 ASD_DPRINTK("%s: phy%d, spinup hold\n", __FUNCTION__,
595 phy_id);
596 } else if (oob_status & CURRENT_ERR_MASK) {
597 asd_turn_led(asd_ha, phy_id, 0);
598 ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n",
599 __FUNCTION__, phy_id, oob_status);
600 } else if (oob_status & (CURRENT_HOT_PLUG_CNCT
601 | CURRENT_DEVICE_PRESENT)) {
602 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
603 asd_turn_led(asd_ha, phy_id, 1);
604 ASD_DPRINTK("%s: phy%d: hot plug or device present\n",
605 __FUNCTION__, phy_id);
606 } else {
607 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
608 asd_turn_led(asd_ha, phy_id, 0);
609 ASD_DPRINTK("%s: phy%d: no device present: "
610 "oob_status:0x%x\n",
611 __FUNCTION__, phy_id, oob_status);
612 }
613 break;
614 case RELEASE_SPINUP_HOLD:
615 case PHY_NO_OP:
616 case EXECUTE_HARD_RESET:
617 ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __FUNCTION__,
618 phy_id, control_phy->sub_func);
619 /* XXX finish */
620 break;
621 default:
622 ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __FUNCTION__,
623 phy_id, control_phy->sub_func);
624 break;
625 }
626 out:
627 asd_ascb_free(ascb);
628 }
629
630 static inline void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd)
631 {
632 /* disable all speeds, then enable defaults */
633 *speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS
634 | SATA_SPEED_30_DIS | SATA_SPEED_15_DIS;
635
636 switch (pd->max_sas_lrate) {
637 case SAS_LINK_RATE_6_0_GBPS:
638 *speed_mask &= ~SAS_SPEED_60_DIS;
639 default:
640 case SAS_LINK_RATE_3_0_GBPS:
641 *speed_mask &= ~SAS_SPEED_30_DIS;
642 case SAS_LINK_RATE_1_5_GBPS:
643 *speed_mask &= ~SAS_SPEED_15_DIS;
644 }
645
646 switch (pd->min_sas_lrate) {
647 case SAS_LINK_RATE_6_0_GBPS:
648 *speed_mask |= SAS_SPEED_30_DIS;
649 case SAS_LINK_RATE_3_0_GBPS:
650 *speed_mask |= SAS_SPEED_15_DIS;
651 default:
652 case SAS_LINK_RATE_1_5_GBPS:
653 /* nothing to do */
654 ;
655 }
656
657 switch (pd->max_sata_lrate) {
658 case SAS_LINK_RATE_3_0_GBPS:
659 *speed_mask &= ~SATA_SPEED_30_DIS;
660 default:
661 case SAS_LINK_RATE_1_5_GBPS:
662 *speed_mask &= ~SATA_SPEED_15_DIS;
663 }
664
665 switch (pd->min_sata_lrate) {
666 case SAS_LINK_RATE_3_0_GBPS:
667 *speed_mask |= SATA_SPEED_15_DIS;
668 default:
669 case SAS_LINK_RATE_1_5_GBPS:
670 /* nothing to do */
671 ;
672 }
673 }
674
675 /**
676 * asd_build_control_phy -- build a CONTROL PHY SCB
677 * @ascb: pointer to an ascb
678 * @phy_id: phy id to control, integer
679 * @subfunc: subfunction, what to actually to do the phy
680 *
681 * This function builds a CONTROL PHY scb. No allocation of any kind
682 * is performed. @ascb is allocated with the list function.
683 * The caller can override the ascb->tasklet_complete to point
684 * to its own callback function. It must call asd_ascb_free()
685 * at its tasklet complete function.
686 * See the default implementation.
687 */
688 void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc)
689 {
690 struct asd_phy *phy = &ascb->ha->phys[phy_id];
691 struct scb *scb = ascb->scb;
692 struct control_phy *control_phy = &scb->control_phy;
693
694 scb->header.opcode = CONTROL_PHY;
695 control_phy->phy_id = (u8) phy_id;
696 control_phy->sub_func = subfunc;
697
698 switch (subfunc) {
699 case EXECUTE_HARD_RESET: /* 0x81 */
700 case ENABLE_PHY: /* 0x01 */
701 /* decide hot plug delay */
702 control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT;
703
704 /* decide speed mask */
705 set_speed_mask(&control_phy->speed_mask, phy->phy_desc);
706
707 /* initiator port settings are in the hi nibble */
708 if (phy->sas_phy.role == PHY_ROLE_INITIATOR)
709 control_phy->port_type = SAS_PROTO_ALL << 4;
710 else if (phy->sas_phy.role == PHY_ROLE_TARGET)
711 control_phy->port_type = SAS_PROTO_ALL;
712 else
713 control_phy->port_type =
714 (SAS_PROTO_ALL << 4) | SAS_PROTO_ALL;
715
716 /* link reset retries, this should be nominal */
717 control_phy->link_reset_retries = 10;
718
719 case RELEASE_SPINUP_HOLD: /* 0x02 */
720 /* decide the func_mask */
721 control_phy->func_mask = FUNCTION_MASK_DEFAULT;
722 if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD)
723 control_phy->func_mask &= ~SPINUP_HOLD_DIS;
724 else
725 control_phy->func_mask |= SPINUP_HOLD_DIS;
726 }
727
728 control_phy->conn_handle = cpu_to_le16(0xFFFF);
729
730 ascb->tasklet_complete = control_phy_tasklet_complete;
731 }
732
733 /* ---------- INITIATE LINK ADM TASK ---------- */
734
735 static void link_adm_tasklet_complete(struct asd_ascb *ascb,
736 struct done_list_struct *dl)
737 {
738 u8 opcode = dl->opcode;
739 struct initiate_link_adm *link_adm = &ascb->scb->link_adm;
740 u8 phy_id = link_adm->phy_id;
741
742 if (opcode != TC_NO_ERROR) {
743 asd_printk("phy%d: link adm task 0x%x completed with error "
744 "0x%x\n", phy_id, link_adm->sub_func, opcode);
745 }
746 ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n",
747 phy_id, link_adm->sub_func, opcode);
748
749 asd_ascb_free(ascb);
750 }
751
752 void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id,
753 u8 subfunc)
754 {
755 struct scb *scb = ascb->scb;
756 struct initiate_link_adm *link_adm = &scb->link_adm;
757
758 scb->header.opcode = INITIATE_LINK_ADM_TASK;
759
760 link_adm->phy_id = phy_id;
761 link_adm->sub_func = subfunc;
762 link_adm->conn_handle = cpu_to_le16(0xFFFF);
763
764 ascb->tasklet_complete = link_adm_tasklet_complete;
765 }
766
767 /* ---------- SCB timer ---------- */
768
769 /**
770 * asd_ascb_timedout -- called when a pending SCB's timer has expired
771 * @data: unsigned long, a pointer to the ascb in question
772 *
773 * This is the default timeout function which does the most necessary.
774 * Upper layers can implement their own timeout function, say to free
775 * resources they have with this SCB, and then call this one at the
776 * end of their timeout function. To do this, one should initialize
777 * the ascb->timer.{function, data, expires} prior to calling the post
778 * funcion. The timer is started by the post function.
779 */
780 void asd_ascb_timedout(unsigned long data)
781 {
782 struct asd_ascb *ascb = (void *) data;
783 struct asd_seq_data *seq = &ascb->ha->seq;
784 unsigned long flags;
785
786 ASD_DPRINTK("scb:0x%x timed out\n", ascb->scb->header.opcode);
787
788 spin_lock_irqsave(&seq->pend_q_lock, flags);
789 seq->pending--;
790 list_del_init(&ascb->list);
791 spin_unlock_irqrestore(&seq->pend_q_lock, flags);
792
793 asd_ascb_free(ascb);
794 }
795
796 /* ---------- CONTROL PHY ---------- */
797
798 /* Given the spec value, return a driver value. */
799 static const int phy_func_table[] = {
800 [PHY_FUNC_NOP] = PHY_NO_OP,
801 [PHY_FUNC_LINK_RESET] = ENABLE_PHY,
802 [PHY_FUNC_HARD_RESET] = EXECUTE_HARD_RESET,
803 [PHY_FUNC_DISABLE] = DISABLE_PHY,
804 [PHY_FUNC_RELEASE_SPINUP_HOLD] = RELEASE_SPINUP_HOLD,
805 };
806
807 int asd_control_phy(struct asd_sas_phy *phy, enum phy_func func, void *arg)
808 {
809 struct asd_ha_struct *asd_ha = phy->ha->lldd_ha;
810 struct asd_phy_desc *pd = asd_ha->phys[phy->id].phy_desc;
811 struct asd_ascb *ascb;
812 struct sas_phy_linkrates *rates;
813 int res = 1;
814
815 switch (func) {
816 case PHY_FUNC_CLEAR_ERROR_LOG:
817 return -ENOSYS;
818 case PHY_FUNC_SET_LINK_RATE:
819 rates = arg;
820 if (rates->minimum_linkrate) {
821 pd->min_sas_lrate = rates->minimum_linkrate;
822 pd->min_sata_lrate = rates->minimum_linkrate;
823 }
824 if (rates->maximum_linkrate) {
825 pd->max_sas_lrate = rates->maximum_linkrate;
826 pd->max_sata_lrate = rates->maximum_linkrate;
827 }
828 func = PHY_FUNC_LINK_RESET;
829 break;
830 default:
831 break;
832 }
833
834 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
835 if (!ascb)
836 return -ENOMEM;
837
838 asd_build_control_phy(ascb, phy->id, phy_func_table[func]);
839 res = asd_post_ascb_list(asd_ha, ascb , 1);
840 if (res)
841 asd_ascb_free(ascb);
842
843 return res;
844 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree