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ACPI: thinkpad-acpi: add compatibility MODULE_ALIAS entry
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / aic94xx / aic94xx_scb.c
blob75ed6b0569d1ad9243e8be51e265f7df144abbd6
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 /* hard reset a phy later */
417 static void do_phy_reset_later(struct work_struct *work)
418 {
419 struct sas_phy *sas_phy =
420 container_of(work, struct sas_phy, reset_work);
421 int error;
422
423 ASD_DPRINTK("%s: About to hard reset phy %d\n", __FUNCTION__,
424 sas_phy->identify.phy_identifier);
425 /* Reset device port */
426 error = sas_phy_reset(sas_phy, 1);
427 if (error)
428 ASD_DPRINTK("%s: Hard reset of phy %d failed (%d).\n",
429 __FUNCTION__, sas_phy->identify.phy_identifier, error);
430 }
431
432 static void phy_reset_later(struct sas_phy *sas_phy, struct Scsi_Host *shost)
433 {
434 INIT_WORK(&sas_phy->reset_work, do_phy_reset_later);
435 queue_work(shost->work_q, &sas_phy->reset_work);
436 }
437
438 /* start up the ABORT TASK tmf... */
439 static void task_kill_later(struct asd_ascb *ascb)
440 {
441 struct asd_ha_struct *asd_ha = ascb->ha;
442 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
443 struct Scsi_Host *shost = sas_ha->core.shost;
444 struct sas_task *task = ascb->uldd_task;
445
446 INIT_WORK(&task->abort_work, sas_task_abort);
447 queue_work(shost->work_q, &task->abort_work);
448 }
449
450 static void escb_tasklet_complete(struct asd_ascb *ascb,
451 struct done_list_struct *dl)
452 {
453 struct asd_ha_struct *asd_ha = ascb->ha;
454 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
455 int edb = (dl->opcode & DL_PHY_MASK) - 1; /* [0xc1,0xc7] -> [0,6] */
456 u8 sb_opcode = dl->status_block[0];
457 int phy_id = sb_opcode & DL_PHY_MASK;
458 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
459 struct asd_phy *phy = &asd_ha->phys[phy_id];
460
461 if (edb > 6 || edb < 0) {
462 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
463 edb, dl->opcode);
464 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
465 sb_opcode, phy_id);
466 ASD_DPRINTK("escb: vaddr: 0x%p, "
467 "dma_handle: 0x%llx, next: 0x%llx, "
468 "index:%d, opcode:0x%02x\n",
469 ascb->dma_scb.vaddr,
470 (unsigned long long)ascb->dma_scb.dma_handle,
471 (unsigned long long)
472 le64_to_cpu(ascb->scb->header.next_scb),
473 le16_to_cpu(ascb->scb->header.index),
474 ascb->scb->header.opcode);
475 }
476
477 /* Catch these before we mask off the sb_opcode bits */
478 switch (sb_opcode) {
479 case REQ_TASK_ABORT: {
480 struct asd_ascb *a, *b;
481 u16 tc_abort;
482
483 tc_abort = *((u16*)(&dl->status_block[1]));
484 tc_abort = le16_to_cpu(tc_abort);
485
486 ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n",
487 __FUNCTION__, dl->status_block[3]);
488
489 /* Find the pending task and abort it. */
490 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list)
491 if (a->tc_index == tc_abort) {
492 task_kill_later(a);
493 break;
494 }
495 goto out;
496 }
497 case REQ_DEVICE_RESET: {
498 struct Scsi_Host *shost = sas_ha->core.shost;
499 struct sas_phy *dev_phy;
500 struct asd_ascb *a;
501 u16 conn_handle;
502
503 conn_handle = *((u16*)(&dl->status_block[1]));
504 conn_handle = le16_to_cpu(conn_handle);
505
506 ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __FUNCTION__,
507 dl->status_block[3]);
508
509 /* Kill all pending tasks and reset the device */
510 dev_phy = NULL;
511 list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
512 struct sas_task *task;
513 struct domain_device *dev;
514 u16 x;
515
516 task = a->uldd_task;
517 if (!task)
518 continue;
519 dev = task->dev;
520
521 x = (unsigned long)dev->lldd_dev;
522 if (x == conn_handle) {
523 dev_phy = dev->port->phy;
524 task_kill_later(a);
525 }
526 }
527
528 /* Reset device port */
529 if (!dev_phy) {
530 ASD_DPRINTK("%s: No pending commands; can't reset.\n",
531 __FUNCTION__);
532 goto out;
533 }
534 phy_reset_later(dev_phy, shost);
535 goto out;
536 }
537 case SIGNAL_NCQ_ERROR:
538 ASD_DPRINTK("%s: SIGNAL_NCQ_ERROR\n", __FUNCTION__);
539 goto out;
540 case CLEAR_NCQ_ERROR:
541 ASD_DPRINTK("%s: CLEAR_NCQ_ERROR\n", __FUNCTION__);
542 goto out;
543 }
544
545 sb_opcode &= ~DL_PHY_MASK;
546
547 switch (sb_opcode) {
548 case BYTES_DMAED:
549 ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __FUNCTION__, phy_id);
550 asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id);
551 break;
552 case PRIMITIVE_RECVD:
553 ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __FUNCTION__,
554 phy_id);
555 asd_primitive_rcvd_tasklet(ascb, dl, phy_id);
556 break;
557 case PHY_EVENT:
558 ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __FUNCTION__, phy_id);
559 asd_phy_event_tasklet(ascb, dl);
560 break;
561 case LINK_RESET_ERROR:
562 ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __FUNCTION__,
563 phy_id);
564 asd_link_reset_err_tasklet(ascb, dl, phy_id);
565 break;
566 case TIMER_EVENT:
567 ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n",
568 __FUNCTION__, phy_id);
569 asd_turn_led(asd_ha, phy_id, 0);
570 /* the device is gone */
571 sas_phy_disconnected(sas_phy);
572 asd_deform_port(asd_ha, phy);
573 sas_ha->notify_port_event(sas_phy, PORTE_TIMER_EVENT);
574 break;
575 default:
576 ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __FUNCTION__,
577 phy_id, sb_opcode);
578 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
579 edb, dl->opcode);
580 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
581 sb_opcode, phy_id);
582 ASD_DPRINTK("escb: vaddr: 0x%p, "
583 "dma_handle: 0x%llx, next: 0x%llx, "
584 "index:%d, opcode:0x%02x\n",
585 ascb->dma_scb.vaddr,
586 (unsigned long long)ascb->dma_scb.dma_handle,
587 (unsigned long long)
588 le64_to_cpu(ascb->scb->header.next_scb),
589 le16_to_cpu(ascb->scb->header.index),
590 ascb->scb->header.opcode);
591
592 break;
593 }
594 out:
595 asd_invalidate_edb(ascb, edb);
596 }
597
598 int asd_init_post_escbs(struct asd_ha_struct *asd_ha)
599 {
600 struct asd_seq_data *seq = &asd_ha->seq;
601 int i;
602
603 for (i = 0; i < seq->num_escbs; i++)
604 seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete;
605
606 ASD_DPRINTK("posting %d escbs\n", i);
607 return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs);
608 }
609
610 /* ---------- CONTROL PHY ---------- */
611
612 #define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \
613 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
614 | CURRENT_OOB_ERROR)
615
616 /**
617 * control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb
618 * @ascb: pointer to an ascb
619 * @dl: pointer to the done list entry
620 *
621 * This function completes a CONTROL PHY scb and frees the ascb.
622 * A note on LEDs:
623 * - an LED blinks if there is IO though it,
624 * - if a device is connected to the LED, it is lit,
625 * - if no device is connected to the LED, is is dimmed (off).
626 */
627 static void control_phy_tasklet_complete(struct asd_ascb *ascb,
628 struct done_list_struct *dl)
629 {
630 struct asd_ha_struct *asd_ha = ascb->ha;
631 struct scb *scb = ascb->scb;
632 struct control_phy *control_phy = &scb->control_phy;
633 u8 phy_id = control_phy->phy_id;
634 struct asd_phy *phy = &ascb->ha->phys[phy_id];
635
636 u8 status = dl->status_block[0];
637 u8 oob_status = dl->status_block[1];
638 u8 oob_mode = dl->status_block[2];
639 /* u8 oob_signals= dl->status_block[3]; */
640
641 if (status != 0) {
642 ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n",
643 __FUNCTION__, phy_id, status);
644 goto out;
645 }
646
647 switch (control_phy->sub_func) {
648 case DISABLE_PHY:
649 asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id);
650 asd_turn_led(asd_ha, phy_id, 0);
651 asd_control_led(asd_ha, phy_id, 0);
652 ASD_DPRINTK("%s: disable phy%d\n", __FUNCTION__, phy_id);
653 break;
654
655 case ENABLE_PHY:
656 asd_control_led(asd_ha, phy_id, 1);
657 if (oob_status & CURRENT_OOB_DONE) {
658 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
659 get_lrate_mode(phy, oob_mode);
660 asd_turn_led(asd_ha, phy_id, 1);
661 ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n",
662 __FUNCTION__, phy_id,phy->sas_phy.linkrate,
663 phy->sas_phy.iproto);
664 } else if (oob_status & CURRENT_SPINUP_HOLD) {
665 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
666 asd_turn_led(asd_ha, phy_id, 1);
667 ASD_DPRINTK("%s: phy%d, spinup hold\n", __FUNCTION__,
668 phy_id);
669 } else if (oob_status & CURRENT_ERR_MASK) {
670 asd_turn_led(asd_ha, phy_id, 0);
671 ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n",
672 __FUNCTION__, phy_id, oob_status);
673 } else if (oob_status & (CURRENT_HOT_PLUG_CNCT
674 | CURRENT_DEVICE_PRESENT)) {
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: hot plug or device present\n",
678 __FUNCTION__, phy_id);
679 } else {
680 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
681 asd_turn_led(asd_ha, phy_id, 0);
682 ASD_DPRINTK("%s: phy%d: no device present: "
683 "oob_status:0x%x\n",
684 __FUNCTION__, phy_id, oob_status);
685 }
686 break;
687 case RELEASE_SPINUP_HOLD:
688 case PHY_NO_OP:
689 case EXECUTE_HARD_RESET:
690 ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __FUNCTION__,
691 phy_id, control_phy->sub_func);
692 /* XXX finish */
693 break;
694 default:
695 ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __FUNCTION__,
696 phy_id, control_phy->sub_func);
697 break;
698 }
699 out:
700 asd_ascb_free(ascb);
701 }
702
703 static inline void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd)
704 {
705 /* disable all speeds, then enable defaults */
706 *speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS
707 | SATA_SPEED_30_DIS | SATA_SPEED_15_DIS;
708
709 switch (pd->max_sas_lrate) {
710 case SAS_LINK_RATE_6_0_GBPS:
711 *speed_mask &= ~SAS_SPEED_60_DIS;
712 default:
713 case SAS_LINK_RATE_3_0_GBPS:
714 *speed_mask &= ~SAS_SPEED_30_DIS;
715 case SAS_LINK_RATE_1_5_GBPS:
716 *speed_mask &= ~SAS_SPEED_15_DIS;
717 }
718
719 switch (pd->min_sas_lrate) {
720 case SAS_LINK_RATE_6_0_GBPS:
721 *speed_mask |= SAS_SPEED_30_DIS;
722 case SAS_LINK_RATE_3_0_GBPS:
723 *speed_mask |= SAS_SPEED_15_DIS;
724 default:
725 case SAS_LINK_RATE_1_5_GBPS:
726 /* nothing to do */
727 ;
728 }
729
730 switch (pd->max_sata_lrate) {
731 case SAS_LINK_RATE_3_0_GBPS:
732 *speed_mask &= ~SATA_SPEED_30_DIS;
733 default:
734 case SAS_LINK_RATE_1_5_GBPS:
735 *speed_mask &= ~SATA_SPEED_15_DIS;
736 }
737
738 switch (pd->min_sata_lrate) {
739 case SAS_LINK_RATE_3_0_GBPS:
740 *speed_mask |= SATA_SPEED_15_DIS;
741 default:
742 case SAS_LINK_RATE_1_5_GBPS:
743 /* nothing to do */
744 ;
745 }
746 }
747
748 /**
749 * asd_build_control_phy -- build a CONTROL PHY SCB
750 * @ascb: pointer to an ascb
751 * @phy_id: phy id to control, integer
752 * @subfunc: subfunction, what to actually to do the phy
753 *
754 * This function builds a CONTROL PHY scb. No allocation of any kind
755 * is performed. @ascb is allocated with the list function.
756 * The caller can override the ascb->tasklet_complete to point
757 * to its own callback function. It must call asd_ascb_free()
758 * at its tasklet complete function.
759 * See the default implementation.
760 */
761 void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc)
762 {
763 struct asd_phy *phy = &ascb->ha->phys[phy_id];
764 struct scb *scb = ascb->scb;
765 struct control_phy *control_phy = &scb->control_phy;
766
767 scb->header.opcode = CONTROL_PHY;
768 control_phy->phy_id = (u8) phy_id;
769 control_phy->sub_func = subfunc;
770
771 switch (subfunc) {
772 case EXECUTE_HARD_RESET: /* 0x81 */
773 case ENABLE_PHY: /* 0x01 */
774 /* decide hot plug delay */
775 control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT;
776
777 /* decide speed mask */
778 set_speed_mask(&control_phy->speed_mask, phy->phy_desc);
779
780 /* initiator port settings are in the hi nibble */
781 if (phy->sas_phy.role == PHY_ROLE_INITIATOR)
782 control_phy->port_type = SAS_PROTO_ALL << 4;
783 else if (phy->sas_phy.role == PHY_ROLE_TARGET)
784 control_phy->port_type = SAS_PROTO_ALL;
785 else
786 control_phy->port_type =
787 (SAS_PROTO_ALL << 4) | SAS_PROTO_ALL;
788
789 /* link reset retries, this should be nominal */
790 control_phy->link_reset_retries = 10;
791
792 case RELEASE_SPINUP_HOLD: /* 0x02 */
793 /* decide the func_mask */
794 control_phy->func_mask = FUNCTION_MASK_DEFAULT;
795 if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD)
796 control_phy->func_mask &= ~SPINUP_HOLD_DIS;
797 else
798 control_phy->func_mask |= SPINUP_HOLD_DIS;
799 }
800
801 control_phy->conn_handle = cpu_to_le16(0xFFFF);
802
803 ascb->tasklet_complete = control_phy_tasklet_complete;
804 }
805
806 /* ---------- INITIATE LINK ADM TASK ---------- */
807
808 static void link_adm_tasklet_complete(struct asd_ascb *ascb,
809 struct done_list_struct *dl)
810 {
811 u8 opcode = dl->opcode;
812 struct initiate_link_adm *link_adm = &ascb->scb->link_adm;
813 u8 phy_id = link_adm->phy_id;
814
815 if (opcode != TC_NO_ERROR) {
816 asd_printk("phy%d: link adm task 0x%x completed with error "
817 "0x%x\n", phy_id, link_adm->sub_func, opcode);
818 }
819 ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n",
820 phy_id, link_adm->sub_func, opcode);
821
822 asd_ascb_free(ascb);
823 }
824
825 void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id,
826 u8 subfunc)
827 {
828 struct scb *scb = ascb->scb;
829 struct initiate_link_adm *link_adm = &scb->link_adm;
830
831 scb->header.opcode = INITIATE_LINK_ADM_TASK;
832
833 link_adm->phy_id = phy_id;
834 link_adm->sub_func = subfunc;
835 link_adm->conn_handle = cpu_to_le16(0xFFFF);
836
837 ascb->tasklet_complete = link_adm_tasklet_complete;
838 }
839
840 /* ---------- SCB timer ---------- */
841
842 /**
843 * asd_ascb_timedout -- called when a pending SCB's timer has expired
844 * @data: unsigned long, a pointer to the ascb in question
845 *
846 * This is the default timeout function which does the most necessary.
847 * Upper layers can implement their own timeout function, say to free
848 * resources they have with this SCB, and then call this one at the
849 * end of their timeout function. To do this, one should initialize
850 * the ascb->timer.{function, data, expires} prior to calling the post
851 * funcion. The timer is started by the post function.
852 */
853 void asd_ascb_timedout(unsigned long data)
854 {
855 struct asd_ascb *ascb = (void *) data;
856 struct asd_seq_data *seq = &ascb->ha->seq;
857 unsigned long flags;
858
859 ASD_DPRINTK("scb:0x%x timed out\n", ascb->scb->header.opcode);
860
861 spin_lock_irqsave(&seq->pend_q_lock, flags);
862 seq->pending--;
863 list_del_init(&ascb->list);
864 spin_unlock_irqrestore(&seq->pend_q_lock, flags);
865
866 asd_ascb_free(ascb);
867 }
868
869 /* ---------- CONTROL PHY ---------- */
870
871 /* Given the spec value, return a driver value. */
872 static const int phy_func_table[] = {
873 [PHY_FUNC_NOP] = PHY_NO_OP,
874 [PHY_FUNC_LINK_RESET] = ENABLE_PHY,
875 [PHY_FUNC_HARD_RESET] = EXECUTE_HARD_RESET,
876 [PHY_FUNC_DISABLE] = DISABLE_PHY,
877 [PHY_FUNC_RELEASE_SPINUP_HOLD] = RELEASE_SPINUP_HOLD,
878 };
879
880 int asd_control_phy(struct asd_sas_phy *phy, enum phy_func func, void *arg)
881 {
882 struct asd_ha_struct *asd_ha = phy->ha->lldd_ha;
883 struct asd_phy_desc *pd = asd_ha->phys[phy->id].phy_desc;
884 struct asd_ascb *ascb;
885 struct sas_phy_linkrates *rates;
886 int res = 1;
887
888 switch (func) {
889 case PHY_FUNC_CLEAR_ERROR_LOG:
890 return -ENOSYS;
891 case PHY_FUNC_SET_LINK_RATE:
892 rates = arg;
893 if (rates->minimum_linkrate) {
894 pd->min_sas_lrate = rates->minimum_linkrate;
895 pd->min_sata_lrate = rates->minimum_linkrate;
896 }
897 if (rates->maximum_linkrate) {
898 pd->max_sas_lrate = rates->maximum_linkrate;
899 pd->max_sata_lrate = rates->maximum_linkrate;
900 }
901 func = PHY_FUNC_LINK_RESET;
902 break;
903 default:
904 break;
905 }
906
907 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
908 if (!ascb)
909 return -ENOMEM;
910
911 asd_build_control_phy(ascb, phy->id, phy_func_table[func]);
912 res = asd_post_ascb_list(asd_ha, ascb , 1);
913 if (res)
914 asd_ascb_free(ascb);
915
916 return res;
917 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree