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drm/tests: hdmi: Fix memory leaks in drm_display_mode_from_cea_vic()
[drm/drm-misc.git] / drivers / scsi / aic94xx / aic94xx_scb.c
blob68214a58b16015ea80436aa1daf5928ee76c7830
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Aic94xx SAS/SATA driver SCB management.
4 *
5 * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
6 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
7 */
8
9 #include <linux/gfp.h>
10 #include <scsi/scsi_host.h>
11
12 #include "aic94xx.h"
13 #include "aic94xx_reg.h"
14 #include "aic94xx_hwi.h"
15 #include "aic94xx_seq.h"
16
17 #include "aic94xx_dump.h"
18
19 /* ---------- EMPTY SCB ---------- */
20
21 #define DL_PHY_MASK 7
22 #define BYTES_DMAED 0
23 #define PRIMITIVE_RECVD 0x08
24 #define PHY_EVENT 0x10
25 #define LINK_RESET_ERROR 0x18
26 #define TIMER_EVENT 0x20
27 #define REQ_TASK_ABORT 0xF0
28 #define REQ_DEVICE_RESET 0xF1
29 #define SIGNAL_NCQ_ERROR 0xF2
30 #define CLEAR_NCQ_ERROR 0xF3
31
32 #define PHY_EVENTS_STATUS (CURRENT_LOSS_OF_SIGNAL | CURRENT_OOB_DONE \
33 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
34 | CURRENT_OOB_ERROR)
35
36 static void get_lrate_mode(struct asd_phy *phy, u8 oob_mode)
37 {
38 struct sas_phy *sas_phy = phy->sas_phy.phy;
39
40 switch (oob_mode & 7) {
41 case PHY_SPEED_60:
42 /* FIXME: sas transport class doesn't have this */
43 phy->sas_phy.linkrate = SAS_LINK_RATE_6_0_GBPS;
44 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_6_0_GBPS;
45 break;
46 case PHY_SPEED_30:
47 phy->sas_phy.linkrate = SAS_LINK_RATE_3_0_GBPS;
48 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_3_0_GBPS;
49 break;
50 case PHY_SPEED_15:
51 phy->sas_phy.linkrate = SAS_LINK_RATE_1_5_GBPS;
52 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_1_5_GBPS;
53 break;
54 }
55 sas_phy->negotiated_linkrate = phy->sas_phy.linkrate;
56 sas_phy->maximum_linkrate_hw = SAS_LINK_RATE_3_0_GBPS;
57 sas_phy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
58 sas_phy->maximum_linkrate = phy->phy_desc->max_sas_lrate;
59 sas_phy->minimum_linkrate = phy->phy_desc->min_sas_lrate;
60
61 if (oob_mode & SAS_MODE)
62 phy->sas_phy.oob_mode = SAS_OOB_MODE;
63 else if (oob_mode & SATA_MODE)
64 phy->sas_phy.oob_mode = SATA_OOB_MODE;
65 }
66
67 static void asd_phy_event_tasklet(struct asd_ascb *ascb,
68 struct done_list_struct *dl)
69 {
70 struct asd_ha_struct *asd_ha = ascb->ha;
71 int phy_id = dl->status_block[0] & DL_PHY_MASK;
72 struct asd_phy *phy = &asd_ha->phys[phy_id];
73
74 u8 oob_status = dl->status_block[1] & PHY_EVENTS_STATUS;
75 u8 oob_mode = dl->status_block[2];
76
77 switch (oob_status) {
78 case CURRENT_LOSS_OF_SIGNAL:
79 /* directly attached device was removed */
80 ASD_DPRINTK("phy%d: device unplugged\n", phy_id);
81 asd_turn_led(asd_ha, phy_id, 0);
82 sas_phy_disconnected(&phy->sas_phy);
83 sas_notify_phy_event(&phy->sas_phy, PHYE_LOSS_OF_SIGNAL,
84 GFP_ATOMIC);
85 break;
86 case CURRENT_OOB_DONE:
87 /* hot plugged device */
88 asd_turn_led(asd_ha, phy_id, 1);
89 get_lrate_mode(phy, oob_mode);
90 ASD_DPRINTK("phy%d device plugged: lrate:0x%x, proto:0x%x\n",
91 phy_id, phy->sas_phy.linkrate, phy->sas_phy.iproto);
92 sas_notify_phy_event(&phy->sas_phy, PHYE_OOB_DONE, GFP_ATOMIC);
93 break;
94 case CURRENT_SPINUP_HOLD:
95 /* hot plug SATA, no COMWAKE sent */
96 asd_turn_led(asd_ha, phy_id, 1);
97 sas_notify_phy_event(&phy->sas_phy, PHYE_SPINUP_HOLD,
98 GFP_ATOMIC);
99 break;
100 case CURRENT_GTO_TIMEOUT:
101 case CURRENT_OOB_ERROR:
102 ASD_DPRINTK("phy%d error while OOB: oob status:0x%x\n", phy_id,
103 dl->status_block[1]);
104 asd_turn_led(asd_ha, phy_id, 0);
105 sas_phy_disconnected(&phy->sas_phy);
106 sas_notify_phy_event(&phy->sas_phy, PHYE_OOB_ERROR, GFP_ATOMIC);
107 break;
108 }
109 }
110
111 /* If phys are enabled sparsely, this will do the right thing. */
112 static unsigned ord_phy(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
113 {
114 u8 enabled_mask = asd_ha->hw_prof.enabled_phys;
115 int i, k = 0;
116
117 for_each_phy(enabled_mask, enabled_mask, i) {
118 if (&asd_ha->phys[i] == phy)
119 return k;
120 k++;
121 }
122 return 0;
123 }
124
125 /**
126 * asd_get_attached_sas_addr -- extract/generate attached SAS address
127 * @phy: pointer to asd_phy
128 * @sas_addr: pointer to buffer where the SAS address is to be written
129 *
130 * This function extracts the SAS address from an IDENTIFY frame
131 * received. If OOB is SATA, then a SAS address is generated from the
132 * HA tables.
133 *
134 * LOCKING: the frame_rcvd_lock needs to be held since this parses the frame
135 * buffer.
136 */
137 static void asd_get_attached_sas_addr(struct asd_phy *phy, u8 *sas_addr)
138 {
139 if (phy->sas_phy.frame_rcvd[0] == 0x34
140 && phy->sas_phy.oob_mode == SATA_OOB_MODE) {
141 struct asd_ha_struct *asd_ha = phy->sas_phy.ha->lldd_ha;
142 /* FIS device-to-host */
143 u64 addr = be64_to_cpu(*(__be64 *)phy->phy_desc->sas_addr);
144
145 addr += asd_ha->hw_prof.sata_name_base + ord_phy(asd_ha, phy);
146 *(__be64 *)sas_addr = cpu_to_be64(addr);
147 } else {
148 struct sas_identify_frame *idframe =
149 (void *) phy->sas_phy.frame_rcvd;
150 memcpy(sas_addr, idframe->sas_addr, SAS_ADDR_SIZE);
151 }
152 }
153
154 static void asd_form_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
155 {
156 int i;
157 struct asd_port *free_port = NULL;
158 struct asd_port *port;
159 struct asd_sas_phy *sas_phy = &phy->sas_phy;
160 unsigned long flags;
161
162 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags);
163 if (!phy->asd_port) {
164 for (i = 0; i < ASD_MAX_PHYS; i++) {
165 port = &asd_ha->asd_ports[i];
166
167 /* Check for wide port */
168 if (port->num_phys > 0 &&
169 memcmp(port->sas_addr, sas_phy->sas_addr,
170 SAS_ADDR_SIZE) == 0 &&
171 memcmp(port->attached_sas_addr,
172 sas_phy->attached_sas_addr,
173 SAS_ADDR_SIZE) == 0) {
174 break;
175 }
176
177 /* Find a free port */
178 if (port->num_phys == 0 && free_port == NULL) {
179 free_port = port;
180 }
181 }
182
183 /* Use a free port if this doesn't form a wide port */
184 if (i >= ASD_MAX_PHYS) {
185 port = free_port;
186 BUG_ON(!port);
187 memcpy(port->sas_addr, sas_phy->sas_addr,
188 SAS_ADDR_SIZE);
189 memcpy(port->attached_sas_addr,
190 sas_phy->attached_sas_addr,
191 SAS_ADDR_SIZE);
192 }
193 port->num_phys++;
194 port->phy_mask |= (1U << sas_phy->id);
195 phy->asd_port = port;
196 }
197 ASD_DPRINTK("%s: updating phy_mask 0x%x for phy%d\n",
198 __func__, phy->asd_port->phy_mask, sas_phy->id);
199 asd_update_port_links(asd_ha, phy);
200 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags);
201 }
202
203 static void asd_deform_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
204 {
205 struct asd_port *port = phy->asd_port;
206 struct asd_sas_phy *sas_phy = &phy->sas_phy;
207 unsigned long flags;
208
209 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags);
210 if (port) {
211 port->num_phys--;
212 port->phy_mask &= ~(1U << sas_phy->id);
213 phy->asd_port = NULL;
214 }
215 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags);
216 }
217
218 static void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb,
219 struct done_list_struct *dl,
220 int edb_id, int phy_id)
221 {
222 unsigned long flags;
223 int edb_el = edb_id + ascb->edb_index;
224 struct asd_dma_tok *edb = ascb->ha->seq.edb_arr[edb_el];
225 struct asd_phy *phy = &ascb->ha->phys[phy_id];
226 u16 size = ((dl->status_block[3] & 7) << 8) | dl->status_block[2];
227
228 size = min(size, (u16) sizeof(phy->frame_rcvd));
229
230 spin_lock_irqsave(&phy->sas_phy.frame_rcvd_lock, flags);
231 memcpy(phy->sas_phy.frame_rcvd, edb->vaddr, size);
232 phy->sas_phy.frame_rcvd_size = size;
233 asd_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr);
234 spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags);
235 asd_dump_frame_rcvd(phy, dl);
236 asd_form_port(ascb->ha, phy);
237 sas_notify_port_event(&phy->sas_phy, PORTE_BYTES_DMAED, GFP_ATOMIC);
238 }
239
240 static void asd_link_reset_err_tasklet(struct asd_ascb *ascb,
241 struct done_list_struct *dl,
242 int phy_id)
243 {
244 struct asd_ha_struct *asd_ha = ascb->ha;
245 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
246 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
247 struct asd_phy *phy = &asd_ha->phys[phy_id];
248 u8 lr_error = dl->status_block[1];
249 u8 retries_left = dl->status_block[2];
250
251 switch (lr_error) {
252 case 0:
253 ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id);
254 break;
255 case 1:
256 ASD_DPRINTK("phy%d: Loss of signal\n", phy_id);
257 break;
258 case 2:
259 ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id);
260 break;
261 case 3:
262 ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id);
263 break;
264 default:
265 ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n",
266 phy_id, lr_error);
267 break;
268 }
269
270 asd_turn_led(asd_ha, phy_id, 0);
271 sas_phy_disconnected(sas_phy);
272 asd_deform_port(asd_ha, phy);
273 sas_notify_port_event(sas_phy, PORTE_LINK_RESET_ERR, GFP_ATOMIC);
274
275 if (retries_left == 0) {
276 int num = 1;
277 struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num,
278 GFP_ATOMIC);
279 if (!cp) {
280 asd_printk("%s: out of memory\n", __func__);
281 goto out;
282 }
283 ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n",
284 phy_id);
285 asd_build_control_phy(cp, phy_id, ENABLE_PHY);
286 if (asd_post_ascb_list(ascb->ha, cp, 1) != 0)
287 asd_ascb_free(cp);
288 }
289 out:
290 ;
291 }
292
293 static void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb,
294 struct done_list_struct *dl,
295 int phy_id)
296 {
297 unsigned long flags;
298 struct sas_ha_struct *sas_ha = &ascb->ha->sas_ha;
299 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
300 struct asd_ha_struct *asd_ha = ascb->ha;
301 struct asd_phy *phy = &asd_ha->phys[phy_id];
302 u8 reg = dl->status_block[1];
303 u32 cont = dl->status_block[2] << ((reg & 3)*8);
304
305 reg &= ~3;
306 switch (reg) {
307 case LmPRMSTAT0BYTE0:
308 switch (cont) {
309 case LmBROADCH:
310 case LmBROADRVCH0:
311 case LmBROADRVCH1:
312 case LmBROADSES:
313 ASD_DPRINTK("phy%d: BROADCAST change received:%d\n",
314 phy_id, cont);
315 spin_lock_irqsave(&sas_phy->sas_prim_lock, flags);
316 sas_phy->sas_prim = ffs(cont);
317 spin_unlock_irqrestore(&sas_phy->sas_prim_lock, flags);
318 sas_notify_port_event(sas_phy, PORTE_BROADCAST_RCVD,
319 GFP_ATOMIC);
320 break;
321
322 case LmUNKNOWNP:
323 ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id);
324 break;
325
326 default:
327 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
328 phy_id, reg, cont);
329 break;
330 }
331 break;
332 case LmPRMSTAT1BYTE0:
333 switch (cont) {
334 case LmHARDRST:
335 ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n",
336 phy_id);
337 /* The sequencer disables all phys on that port.
338 * We have to re-enable the phys ourselves. */
339 asd_deform_port(asd_ha, phy);
340 sas_notify_port_event(sas_phy, PORTE_HARD_RESET,
341 GFP_ATOMIC);
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 default:
351 ASD_DPRINTK("unknown primitive register:0x%x\n",
352 dl->status_block[1]);
353 break;
354 }
355 }
356
357 /**
358 * asd_invalidate_edb -- invalidate an EDB and if necessary post the ESCB
359 * @ascb: pointer to Empty SCB
360 * @edb_id: index [0,6] to the empty data buffer which is to be invalidated
361 *
362 * After an EDB has been invalidated, if all EDBs in this ESCB have been
363 * invalidated, the ESCB is posted back to the sequencer.
364 * Context is tasklet/IRQ.
365 */
366 void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id)
367 {
368 struct asd_seq_data *seq = &ascb->ha->seq;
369 struct empty_scb *escb = &ascb->scb->escb;
370 struct sg_el *eb = &escb->eb[edb_id];
371 struct asd_dma_tok *edb = seq->edb_arr[ascb->edb_index + edb_id];
372
373 memset(edb->vaddr, 0, ASD_EDB_SIZE);
374 eb->flags |= ELEMENT_NOT_VALID;
375 escb->num_valid--;
376
377 if (escb->num_valid == 0) {
378 int i;
379 /* ASD_DPRINTK("reposting escb: vaddr: 0x%p, "
380 "dma_handle: 0x%08llx, next: 0x%08llx, "
381 "index:%d, opcode:0x%02x\n",
382 ascb->dma_scb.vaddr,
383 (u64)ascb->dma_scb.dma_handle,
384 le64_to_cpu(ascb->scb->header.next_scb),
385 le16_to_cpu(ascb->scb->header.index),
386 ascb->scb->header.opcode);
387 */
388 escb->num_valid = ASD_EDBS_PER_SCB;
389 for (i = 0; i < ASD_EDBS_PER_SCB; i++)
390 escb->eb[i].flags = 0;
391 if (!list_empty(&ascb->list))
392 list_del_init(&ascb->list);
393 i = asd_post_escb_list(ascb->ha, ascb, 1);
394 if (i)
395 asd_printk("couldn't post escb, err:%d\n", i);
396 }
397 }
398
399 static void escb_tasklet_complete(struct asd_ascb *ascb,
400 struct done_list_struct *dl)
401 {
402 struct asd_ha_struct *asd_ha = ascb->ha;
403 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
404 int edb = (dl->opcode & DL_PHY_MASK) - 1; /* [0xc1,0xc7] -> [0,6] */
405 u8 sb_opcode = dl->status_block[0];
406 int phy_id = sb_opcode & DL_PHY_MASK;
407 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
408 struct asd_phy *phy = &asd_ha->phys[phy_id];
409
410 if (edb > 6 || edb < 0) {
411 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
412 edb, dl->opcode);
413 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
414 sb_opcode, phy_id);
415 ASD_DPRINTK("escb: vaddr: 0x%p, "
416 "dma_handle: 0x%llx, next: 0x%llx, "
417 "index:%d, opcode:0x%02x\n",
418 ascb->dma_scb.vaddr,
419 (unsigned long long)ascb->dma_scb.dma_handle,
420 (unsigned long long)
421 le64_to_cpu(ascb->scb->header.next_scb),
422 le16_to_cpu(ascb->scb->header.index),
423 ascb->scb->header.opcode);
424 }
425
426 /* Catch these before we mask off the sb_opcode bits */
427 switch (sb_opcode) {
428 case REQ_TASK_ABORT: {
429 struct asd_ascb *a, *b;
430 u16 tc_abort;
431 struct domain_device *failed_dev = NULL;
432
433 ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n",
434 __func__, dl->status_block[3]);
435
436 /*
437 * Find the task that caused the abort and abort it first.
438 * The sequencer won't put anything on the done list until
439 * that happens.
440 */
441 tc_abort = *((u16*)(&dl->status_block[1]));
442 tc_abort = le16_to_cpu(tc_abort);
443
444 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) {
445 struct sas_task *task = a->uldd_task;
446
447 if (a->tc_index != tc_abort)
448 continue;
449
450 if (task) {
451 failed_dev = task->dev;
452 sas_task_abort(task);
453 } else {
454 ASD_DPRINTK("R_T_A for non TASK scb 0x%x\n",
455 a->scb->header.opcode);
456 }
457 break;
458 }
459
460 if (!failed_dev) {
461 ASD_DPRINTK("%s: Can't find task (tc=%d) to abort!\n",
462 __func__, tc_abort);
463 goto out;
464 }
465
466 /*
467 * Now abort everything else for that device (hba?) so
468 * that the EH will wake up and do something.
469 */
470 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) {
471 struct sas_task *task = a->uldd_task;
472
473 if (task &&
474 task->dev == failed_dev &&
475 a->tc_index != tc_abort)
476 sas_task_abort(task);
477 }
478
479 goto out;
480 }
481 case REQ_DEVICE_RESET: {
482 struct asd_ascb *a;
483 u16 conn_handle;
484 unsigned long flags;
485 struct sas_task *last_dev_task = NULL;
486
487 conn_handle = *((u16*)(&dl->status_block[1]));
488 conn_handle = le16_to_cpu(conn_handle);
489
490 ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __func__,
491 dl->status_block[3]);
492
493 /* Find the last pending task for the device... */
494 list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
495 u16 x;
496 struct domain_device *dev;
497 struct sas_task *task = a->uldd_task;
498
499 if (!task)
500 continue;
501 dev = task->dev;
502
503 x = (unsigned long)dev->lldd_dev;
504 if (x == conn_handle)
505 last_dev_task = task;
506 }
507
508 if (!last_dev_task) {
509 ASD_DPRINTK("%s: Device reset for idle device %d?\n",
510 __func__, conn_handle);
511 goto out;
512 }
513
514 /* ...and set the reset flag */
515 spin_lock_irqsave(&last_dev_task->task_state_lock, flags);
516 last_dev_task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
517 spin_unlock_irqrestore(&last_dev_task->task_state_lock, flags);
518
519 /* Kill all pending tasks for the device */
520 list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
521 u16 x;
522 struct domain_device *dev;
523 struct sas_task *task = a->uldd_task;
524
525 if (!task)
526 continue;
527 dev = task->dev;
528
529 x = (unsigned long)dev->lldd_dev;
530 if (x == conn_handle)
531 sas_task_abort(task);
532 }
533
534 goto out;
535 }
536 case SIGNAL_NCQ_ERROR:
537 ASD_DPRINTK("%s: SIGNAL_NCQ_ERROR\n", __func__);
538 goto out;
539 case CLEAR_NCQ_ERROR:
540 ASD_DPRINTK("%s: CLEAR_NCQ_ERROR\n", __func__);
541 goto out;
542 }
543
544 sb_opcode &= ~DL_PHY_MASK;
545
546 switch (sb_opcode) {
547 case BYTES_DMAED:
548 ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __func__, phy_id);
549 asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id);
550 break;
551 case PRIMITIVE_RECVD:
552 ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __func__,
553 phy_id);
554 asd_primitive_rcvd_tasklet(ascb, dl, phy_id);
555 break;
556 case PHY_EVENT:
557 ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __func__, phy_id);
558 asd_phy_event_tasklet(ascb, dl);
559 break;
560 case LINK_RESET_ERROR:
561 ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __func__,
562 phy_id);
563 asd_link_reset_err_tasklet(ascb, dl, phy_id);
564 break;
565 case TIMER_EVENT:
566 ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n",
567 __func__, phy_id);
568 asd_turn_led(asd_ha, phy_id, 0);
569 /* the device is gone */
570 sas_phy_disconnected(sas_phy);
571 asd_deform_port(asd_ha, phy);
572 sas_notify_port_event(sas_phy, PORTE_TIMER_EVENT, GFP_ATOMIC);
573 break;
574 default:
575 ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __func__,
576 phy_id, sb_opcode);
577 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
578 edb, dl->opcode);
579 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
580 sb_opcode, phy_id);
581 ASD_DPRINTK("escb: vaddr: 0x%p, "
582 "dma_handle: 0x%llx, next: 0x%llx, "
583 "index:%d, opcode:0x%02x\n",
584 ascb->dma_scb.vaddr,
585 (unsigned long long)ascb->dma_scb.dma_handle,
586 (unsigned long long)
587 le64_to_cpu(ascb->scb->header.next_scb),
588 le16_to_cpu(ascb->scb->header.index),
589 ascb->scb->header.opcode);
590
591 break;
592 }
593 out:
594 asd_invalidate_edb(ascb, edb);
595 }
596
597 int asd_init_post_escbs(struct asd_ha_struct *asd_ha)
598 {
599 struct asd_seq_data *seq = &asd_ha->seq;
600 int i;
601
602 for (i = 0; i < seq->num_escbs; i++)
603 seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete;
604
605 ASD_DPRINTK("posting %d escbs\n", i);
606 return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs);
607 }
608
609 /* ---------- CONTROL PHY ---------- */
610
611 #define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \
612 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
613 | CURRENT_OOB_ERROR)
614
615 /**
616 * control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb
617 * @ascb: pointer to an ascb
618 * @dl: pointer to the done list entry
619 *
620 * This function completes a CONTROL PHY scb and frees the ascb.
621 * A note on LEDs:
622 * - an LED blinks if there is IO though it,
623 * - if a device is connected to the LED, it is lit,
624 * - if no device is connected to the LED, is is dimmed (off).
625 */
626 static void control_phy_tasklet_complete(struct asd_ascb *ascb,
627 struct done_list_struct *dl)
628 {
629 struct asd_ha_struct *asd_ha = ascb->ha;
630 struct scb *scb = ascb->scb;
631 struct control_phy *control_phy = &scb->control_phy;
632 u8 phy_id = control_phy->phy_id;
633 struct asd_phy *phy = &ascb->ha->phys[phy_id];
634
635 u8 status = dl->status_block[0];
636 u8 oob_status = dl->status_block[1];
637 u8 oob_mode = dl->status_block[2];
638 /* u8 oob_signals= dl->status_block[3]; */
639
640 if (status != 0) {
641 ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n",
642 __func__, phy_id, status);
643 goto out;
644 }
645
646 switch (control_phy->sub_func) {
647 case DISABLE_PHY:
648 asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id);
649 asd_turn_led(asd_ha, phy_id, 0);
650 asd_control_led(asd_ha, phy_id, 0);
651 ASD_DPRINTK("%s: disable phy%d\n", __func__, phy_id);
652 break;
653
654 case ENABLE_PHY:
655 asd_control_led(asd_ha, phy_id, 1);
656 if (oob_status & CURRENT_OOB_DONE) {
657 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
658 get_lrate_mode(phy, oob_mode);
659 asd_turn_led(asd_ha, phy_id, 1);
660 ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n",
661 __func__, phy_id,phy->sas_phy.linkrate,
662 phy->sas_phy.iproto);
663 } else if (oob_status & CURRENT_SPINUP_HOLD) {
664 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
665 asd_turn_led(asd_ha, phy_id, 1);
666 ASD_DPRINTK("%s: phy%d, spinup hold\n", __func__,
667 phy_id);
668 } else if (oob_status & CURRENT_ERR_MASK) {
669 asd_turn_led(asd_ha, phy_id, 0);
670 ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n",
671 __func__, phy_id, oob_status);
672 } else if (oob_status & (CURRENT_HOT_PLUG_CNCT
673 | CURRENT_DEVICE_PRESENT)) {
674 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
675 asd_turn_led(asd_ha, phy_id, 1);
676 ASD_DPRINTK("%s: phy%d: hot plug or device present\n",
677 __func__, phy_id);
678 } else {
679 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
680 asd_turn_led(asd_ha, phy_id, 0);
681 ASD_DPRINTK("%s: phy%d: no device present: "
682 "oob_status:0x%x\n",
683 __func__, phy_id, oob_status);
684 }
685 break;
686 case RELEASE_SPINUP_HOLD:
687 case PHY_NO_OP:
688 case EXECUTE_HARD_RESET:
689 ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __func__,
690 phy_id, control_phy->sub_func);
691 /* XXX finish */
692 break;
693 default:
694 ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __func__,
695 phy_id, control_phy->sub_func);
696 break;
697 }
698 out:
699 asd_ascb_free(ascb);
700 }
701
702 static void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd)
703 {
704 /* disable all speeds, then enable defaults */
705 *speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS
706 | SATA_SPEED_30_DIS | SATA_SPEED_15_DIS;
707
708 switch (pd->max_sas_lrate) {
709 case SAS_LINK_RATE_6_0_GBPS:
710 *speed_mask &= ~SAS_SPEED_60_DIS;
711 fallthrough;
712 default:
713 case SAS_LINK_RATE_3_0_GBPS:
714 *speed_mask &= ~SAS_SPEED_30_DIS;
715 fallthrough;
716 case SAS_LINK_RATE_1_5_GBPS:
717 *speed_mask &= ~SAS_SPEED_15_DIS;
718 }
719
720 switch (pd->min_sas_lrate) {
721 case SAS_LINK_RATE_6_0_GBPS:
722 *speed_mask |= SAS_SPEED_30_DIS;
723 fallthrough;
724 case SAS_LINK_RATE_3_0_GBPS:
725 *speed_mask |= SAS_SPEED_15_DIS;
726 fallthrough;
727 default:
728 case SAS_LINK_RATE_1_5_GBPS:
729 /* nothing to do */
730 ;
731 }
732
733 switch (pd->max_sata_lrate) {
734 case SAS_LINK_RATE_3_0_GBPS:
735 *speed_mask &= ~SATA_SPEED_30_DIS;
736 fallthrough;
737 default:
738 case SAS_LINK_RATE_1_5_GBPS:
739 *speed_mask &= ~SATA_SPEED_15_DIS;
740 }
741
742 switch (pd->min_sata_lrate) {
743 case SAS_LINK_RATE_3_0_GBPS:
744 *speed_mask |= SATA_SPEED_15_DIS;
745 fallthrough;
746 default:
747 case SAS_LINK_RATE_1_5_GBPS:
748 /* nothing to do */
749 ;
750 }
751 }
752
753 /**
754 * asd_build_control_phy -- build a CONTROL PHY SCB
755 * @ascb: pointer to an ascb
756 * @phy_id: phy id to control, integer
757 * @subfunc: subfunction, what to actually to do the phy
758 *
759 * This function builds a CONTROL PHY scb. No allocation of any kind
760 * is performed. @ascb is allocated with the list function.
761 * The caller can override the ascb->tasklet_complete to point
762 * to its own callback function. It must call asd_ascb_free()
763 * at its tasklet complete function.
764 * See the default implementation.
765 */
766 void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc)
767 {
768 struct asd_phy *phy = &ascb->ha->phys[phy_id];
769 struct scb *scb = ascb->scb;
770 struct control_phy *control_phy = &scb->control_phy;
771
772 scb->header.opcode = CONTROL_PHY;
773 control_phy->phy_id = (u8) phy_id;
774 control_phy->sub_func = subfunc;
775
776 switch (subfunc) {
777 case EXECUTE_HARD_RESET: /* 0x81 */
778 case ENABLE_PHY: /* 0x01 */
779 /* decide hot plug delay */
780 control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT;
781
782 /* decide speed mask */
783 set_speed_mask(&control_phy->speed_mask, phy->phy_desc);
784
785 /* initiator port settings are in the hi nibble */
786 if (phy->sas_phy.role == PHY_ROLE_INITIATOR)
787 control_phy->port_type = SAS_PROTOCOL_ALL << 4;
788 else if (phy->sas_phy.role == PHY_ROLE_TARGET)
789 control_phy->port_type = SAS_PROTOCOL_ALL;
790 else
791 control_phy->port_type =
792 (SAS_PROTOCOL_ALL << 4) | SAS_PROTOCOL_ALL;
793
794 /* link reset retries, this should be nominal */
795 control_phy->link_reset_retries = 10;
796 fallthrough;
797
798 case RELEASE_SPINUP_HOLD: /* 0x02 */
799 /* decide the func_mask */
800 control_phy->func_mask = FUNCTION_MASK_DEFAULT;
801 if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD)
802 control_phy->func_mask &= ~SPINUP_HOLD_DIS;
803 else
804 control_phy->func_mask |= SPINUP_HOLD_DIS;
805 }
806
807 control_phy->conn_handle = cpu_to_le16(0xFFFF);
808
809 ascb->tasklet_complete = control_phy_tasklet_complete;
810 }
811
812 /* ---------- INITIATE LINK ADM TASK ---------- */
813
814 #if 0
815
816 static void link_adm_tasklet_complete(struct asd_ascb *ascb,
817 struct done_list_struct *dl)
818 {
819 u8 opcode = dl->opcode;
820 struct initiate_link_adm *link_adm = &ascb->scb->link_adm;
821 u8 phy_id = link_adm->phy_id;
822
823 if (opcode != TC_NO_ERROR) {
824 asd_printk("phy%d: link adm task 0x%x completed with error "
825 "0x%x\n", phy_id, link_adm->sub_func, opcode);
826 }
827 ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n",
828 phy_id, link_adm->sub_func, opcode);
829
830 asd_ascb_free(ascb);
831 }
832
833 void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id,
834 u8 subfunc)
835 {
836 struct scb *scb = ascb->scb;
837 struct initiate_link_adm *link_adm = &scb->link_adm;
838
839 scb->header.opcode = INITIATE_LINK_ADM_TASK;
840
841 link_adm->phy_id = phy_id;
842 link_adm->sub_func = subfunc;
843 link_adm->conn_handle = cpu_to_le16(0xFFFF);
844
845 ascb->tasklet_complete = link_adm_tasklet_complete;
846 }
847
848 #endif /* 0 */
849
850 /* ---------- SCB timer ---------- */
851
852 /**
853 * asd_ascb_timedout -- called when a pending SCB's timer has expired
854 * @t: Timer context used to fetch the SCB
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, expires} prior to calling the post
861 * function. The timer is started by the post function.
862 */
863 void asd_ascb_timedout(struct timer_list *t)
864 {
865 struct asd_ascb *ascb = from_timer(ascb, t, timer);
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 case PHY_FUNC_GET_EVENTS:
901 return -ENOSYS;
902 case PHY_FUNC_SET_LINK_RATE:
903 rates = arg;
904 if (rates->minimum_linkrate) {
905 pd->min_sas_lrate = rates->minimum_linkrate;
906 pd->min_sata_lrate = rates->minimum_linkrate;
907 }
908 if (rates->maximum_linkrate) {
909 pd->max_sas_lrate = rates->maximum_linkrate;
910 pd->max_sata_lrate = rates->maximum_linkrate;
911 }
912 func = PHY_FUNC_LINK_RESET;
913 break;
914 default:
915 break;
916 }
917
918 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
919 if (!ascb)
920 return -ENOMEM;
921
922 asd_build_control_phy(ascb, phy->id, phy_func_table[func]);
923 res = asd_post_ascb_list(asd_ha, ascb , 1);
924 if (res)
925 asd_ascb_free(ascb);
926
927 return res;
928 }
Kernel DRM miscellaneous fixes and cross-tree changes