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Diffstat (limited to 'drivers/scsi/aic94xx/aic94xx_scb.c')
-rw-r--r--drivers/scsi/aic94xx/aic94xx_scb.c758
1 files changed, 758 insertions, 0 deletions
diff --git a/drivers/scsi/aic94xx/aic94xx_scb.c b/drivers/scsi/aic94xx/aic94xx_scb.c
new file mode 100644
index 000000000000..7ee49b51b724
--- /dev/null
+++ b/drivers/scsi/aic94xx/aic94xx_scb.c
@@ -0,0 +1,758 @@
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
29#include "aic94xx.h"
30#include "aic94xx_reg.h"
31#include "aic94xx_hwi.h"
32#include "aic94xx_seq.h"
33
34#include "aic94xx_dump.h"
35
36/* ---------- EMPTY SCB ---------- */
37
38#define DL_PHY_MASK 7
39#define BYTES_DMAED 0
40#define PRIMITIVE_RECVD 0x08
41#define PHY_EVENT 0x10
42#define LINK_RESET_ERROR 0x18
43#define TIMER_EVENT 0x20
44#define REQ_TASK_ABORT 0xF0
45#define REQ_DEVICE_RESET 0xF1
46#define SIGNAL_NCQ_ERROR 0xF2
47#define CLEAR_NCQ_ERROR 0xF3
48
49#define PHY_EVENTS_STATUS (CURRENT_LOSS_OF_SIGNAL | CURRENT_OOB_DONE \
50 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
51 | CURRENT_OOB_ERROR)
52
53static inline void get_lrate_mode(struct asd_phy *phy, u8 oob_mode)
54{
55 struct sas_phy *sas_phy = phy->sas_phy.phy;
56
57 switch (oob_mode & 7) {
58 case PHY_SPEED_60:
59 /* FIXME: sas transport class doesn't have this */
60 phy->sas_phy.linkrate = SAS_LINK_RATE_6_0_GBPS;
61 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_6_0_GBPS;
62 break;
63 case PHY_SPEED_30:
64 phy->sas_phy.linkrate = SAS_LINK_RATE_3_0_GBPS;
65 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_3_0_GBPS;
66 break;
67 case PHY_SPEED_15:
68 phy->sas_phy.linkrate = SAS_LINK_RATE_1_5_GBPS;
69 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_1_5_GBPS;
70 break;
71 }
72 sas_phy->negotiated_linkrate = phy->sas_phy.linkrate;
73 sas_phy->maximum_linkrate_hw = SAS_LINK_RATE_3_0_GBPS;
74 sas_phy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
75 sas_phy->maximum_linkrate = phy->phy_desc->max_sas_lrate;
76 sas_phy->minimum_linkrate = phy->phy_desc->min_sas_lrate;
77
78 if (oob_mode & SAS_MODE)
79 phy->sas_phy.oob_mode = SAS_OOB_MODE;
80 else if (oob_mode & SATA_MODE)
81 phy->sas_phy.oob_mode = SATA_OOB_MODE;
82}
83
84static inline void asd_phy_event_tasklet(struct asd_ascb *ascb,
85 struct done_list_struct *dl)
86{
87 struct asd_ha_struct *asd_ha = ascb->ha;
88 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
89 int phy_id = dl->status_block[0] & DL_PHY_MASK;
90 struct asd_phy *phy = &asd_ha->phys[phy_id];
91
92 u8 oob_status = dl->status_block[1] & PHY_EVENTS_STATUS;
93 u8 oob_mode = dl->status_block[2];
94
95 switch (oob_status) {
96 case CURRENT_LOSS_OF_SIGNAL:
97 /* directly attached device was removed */
98 ASD_DPRINTK("phy%d: device unplugged\n", phy_id);
99 asd_turn_led(asd_ha, phy_id, 0);
100 sas_phy_disconnected(&phy->sas_phy);
101 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_LOSS_OF_SIGNAL);
102 break;
103 case CURRENT_OOB_DONE:
104 /* hot plugged device */
105 asd_turn_led(asd_ha, phy_id, 1);
106 get_lrate_mode(phy, oob_mode);
107 ASD_DPRINTK("phy%d device plugged: lrate:0x%x, proto:0x%x\n",
108 phy_id, phy->sas_phy.linkrate, phy->sas_phy.iproto);
109 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_DONE);
110 break;
111 case CURRENT_SPINUP_HOLD:
112 /* hot plug SATA, no COMWAKE sent */
113 asd_turn_led(asd_ha, phy_id, 1);
114 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_SPINUP_HOLD);
115 break;
116 case CURRENT_GTO_TIMEOUT:
117 case CURRENT_OOB_ERROR:
118 ASD_DPRINTK("phy%d error while OOB: oob status:0x%x\n", phy_id,
119 dl->status_block[1]);
120 asd_turn_led(asd_ha, phy_id, 0);
121 sas_phy_disconnected(&phy->sas_phy);
122 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_ERROR);
123 break;
124 }
125}
126
127/* If phys are enabled sparsely, this will do the right thing. */
128static inline unsigned ord_phy(struct asd_ha_struct *asd_ha,
129 struct asd_phy *phy)
130{
131 u8 enabled_mask = asd_ha->hw_prof.enabled_phys;
132 int i, k = 0;
133
134 for_each_phy(enabled_mask, enabled_mask, i) {
135 if (&asd_ha->phys[i] == phy)
136 return k;
137 k++;
138 }
139 return 0;
140}
141
142/**
143 * asd_get_attached_sas_addr -- extract/generate attached SAS address
144 * phy: pointer to asd_phy
145 * sas_addr: pointer to buffer where the SAS address is to be written
146 *
147 * This function extracts the SAS address from an IDENTIFY frame
148 * received. If OOB is SATA, then a SAS address is generated from the
149 * HA tables.
150 *
151 * LOCKING: the frame_rcvd_lock needs to be held since this parses the frame
152 * buffer.
153 */
154static inline void asd_get_attached_sas_addr(struct asd_phy *phy, u8 *sas_addr)
155{
156 if (phy->sas_phy.frame_rcvd[0] == 0x34
157 && phy->sas_phy.oob_mode == SATA_OOB_MODE) {
158 struct asd_ha_struct *asd_ha = phy->sas_phy.ha->lldd_ha;
159 /* FIS device-to-host */
160 u64 addr = be64_to_cpu(*(__be64 *)phy->phy_desc->sas_addr);
161
162 addr += asd_ha->hw_prof.sata_name_base + ord_phy(asd_ha, phy);
163 *(__be64 *)sas_addr = cpu_to_be64(addr);
164 } else {
165 struct sas_identify_frame *idframe =
166 (void *) phy->sas_phy.frame_rcvd;
167 memcpy(sas_addr, idframe->sas_addr, SAS_ADDR_SIZE);
168 }
169}
170
171static inline void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb,
172 struct done_list_struct *dl,
173 int edb_id, int phy_id)
174{
175 unsigned long flags;
176 int edb_el = edb_id + ascb->edb_index;
177 struct asd_dma_tok *edb = ascb->ha->seq.edb_arr[edb_el];
178 struct asd_phy *phy = &ascb->ha->phys[phy_id];
179 struct sas_ha_struct *sas_ha = phy->sas_phy.ha;
180 u16 size = ((dl->status_block[3] & 7) << 8) | dl->status_block[2];
181
182 size = min(size, (u16) sizeof(phy->frame_rcvd));
183
184 spin_lock_irqsave(&phy->sas_phy.frame_rcvd_lock, flags);
185 memcpy(phy->sas_phy.frame_rcvd, edb->vaddr, size);
186 phy->sas_phy.frame_rcvd_size = size;
187 asd_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr);
188 spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags);
189 asd_dump_frame_rcvd(phy, dl);
190 sas_ha->notify_port_event(&phy->sas_phy, PORTE_BYTES_DMAED);
191}
192
193static inline void asd_link_reset_err_tasklet(struct asd_ascb *ascb,
194 struct done_list_struct *dl,
195 int phy_id)
196{
197 struct asd_ha_struct *asd_ha = ascb->ha;
198 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
199 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
200 u8 lr_error = dl->status_block[1];
201 u8 retries_left = dl->status_block[2];
202
203 switch (lr_error) {
204 case 0:
205 ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id);
206 break;
207 case 1:
208 ASD_DPRINTK("phy%d: Loss of signal\n", phy_id);
209 break;
210 case 2:
211 ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id);
212 break;
213 case 3:
214 ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id);
215 break;
216 default:
217 ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n",
218 phy_id, lr_error);
219 break;
220 }
221
222 asd_turn_led(asd_ha, phy_id, 0);
223 sas_phy_disconnected(sas_phy);
224 sas_ha->notify_port_event(sas_phy, PORTE_LINK_RESET_ERR);
225
226 if (retries_left == 0) {
227 int num = 1;
228 struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num,
229 GFP_ATOMIC);
230 if (!cp) {
231 asd_printk("%s: out of memory\n", __FUNCTION__);
232 goto out;
233 }
234 ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n",
235 phy_id);
236 asd_build_control_phy(cp, phy_id, ENABLE_PHY);
237 if (asd_post_ascb_list(ascb->ha, cp, 1) != 0)
238 asd_ascb_free(cp);
239 }
240out:
241 ;
242}
243
244static inline void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb,
245 struct done_list_struct *dl,
246 int phy_id)
247{
248 unsigned long flags;
249 struct sas_ha_struct *sas_ha = &ascb->ha->sas_ha;
250 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
251 u8 reg = dl->status_block[1];
252 u32 cont = dl->status_block[2] << ((reg & 3)*8);
253
254 reg &= ~3;
255 switch (reg) {
256 case LmPRMSTAT0BYTE0:
257 switch (cont) {
258 case LmBROADCH:
259 case LmBROADRVCH0:
260 case LmBROADRVCH1:
261 case LmBROADSES:
262 ASD_DPRINTK("phy%d: BROADCAST change received:%d\n",
263 phy_id, cont);
264 spin_lock_irqsave(&sas_phy->sas_prim_lock, flags);
265 sas_phy->sas_prim = ffs(cont);
266 spin_unlock_irqrestore(&sas_phy->sas_prim_lock, flags);
267 sas_ha->notify_port_event(sas_phy,PORTE_BROADCAST_RCVD);
268 break;
269
270 case LmUNKNOWNP:
271 ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id);
272 break;
273
274 default:
275 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
276 phy_id, reg, cont);
277 break;
278 }
279 break;
280 case LmPRMSTAT1BYTE0:
281 switch (cont) {
282 case LmHARDRST:
283 ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n",
284 phy_id);
285 /* The sequencer disables all phys on that port.
286 * We have to re-enable the phys ourselves. */
287 sas_ha->notify_port_event(sas_phy, PORTE_HARD_RESET);
288 break;
289
290 default:
291 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
292 phy_id, reg, cont);
293 break;
294 }
295 break;
296 default:
297 ASD_DPRINTK("unknown primitive register:0x%x\n",
298 dl->status_block[1]);
299 break;
300 }
301}
302
303/**
304 * asd_invalidate_edb -- invalidate an EDB and if necessary post the ESCB
305 * @ascb: pointer to Empty SCB
306 * @edb_id: index [0,6] to the empty data buffer which is to be invalidated
307 *
308 * After an EDB has been invalidated, if all EDBs in this ESCB have been
309 * invalidated, the ESCB is posted back to the sequencer.
310 * Context is tasklet/IRQ.
311 */
312void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id)
313{
314 struct asd_seq_data *seq = &ascb->ha->seq;
315 struct empty_scb *escb = &ascb->scb->escb;
316 struct sg_el *eb = &escb->eb[edb_id];
317 struct asd_dma_tok *edb = seq->edb_arr[ascb->edb_index + edb_id];
318
319 memset(edb->vaddr, 0, ASD_EDB_SIZE);
320 eb->flags |= ELEMENT_NOT_VALID;
321 escb->num_valid--;
322
323 if (escb->num_valid == 0) {
324 int i;
325 /* ASD_DPRINTK("reposting escb: vaddr: 0x%p, "
326 "dma_handle: 0x%08llx, next: 0x%08llx, "
327 "index:%d, opcode:0x%02x\n",
328 ascb->dma_scb.vaddr,
329 (u64)ascb->dma_scb.dma_handle,
330 le64_to_cpu(ascb->scb->header.next_scb),
331 le16_to_cpu(ascb->scb->header.index),
332 ascb->scb->header.opcode);
333 */
334 escb->num_valid = ASD_EDBS_PER_SCB;
335 for (i = 0; i < ASD_EDBS_PER_SCB; i++)
336 escb->eb[i].flags = 0;
337 if (!list_empty(&ascb->list))
338 list_del_init(&ascb->list);
339 i = asd_post_escb_list(ascb->ha, ascb, 1);
340 if (i)
341 asd_printk("couldn't post escb, err:%d\n", i);
342 }
343}
344
345static void escb_tasklet_complete(struct asd_ascb *ascb,
346 struct done_list_struct *dl)
347{
348 struct asd_ha_struct *asd_ha = ascb->ha;
349 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
350 int edb = (dl->opcode & DL_PHY_MASK) - 1; /* [0xc1,0xc7] -> [0,6] */
351 u8 sb_opcode = dl->status_block[0];
352 int phy_id = sb_opcode & DL_PHY_MASK;
353 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
354
355 if (edb > 6 || edb < 0) {
356 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
357 edb, dl->opcode);
358 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
359 sb_opcode, phy_id);
360 ASD_DPRINTK("escb: vaddr: 0x%p, "
361 "dma_handle: 0x%llx, next: 0x%llx, "
362 "index:%d, opcode:0x%02x\n",
363 ascb->dma_scb.vaddr,
364 (unsigned long long)ascb->dma_scb.dma_handle,
365 (unsigned long long)
366 le64_to_cpu(ascb->scb->header.next_scb),
367 le16_to_cpu(ascb->scb->header.index),
368 ascb->scb->header.opcode);
369 }
370
371 sb_opcode &= ~DL_PHY_MASK;
372
373 switch (sb_opcode) {
374 case BYTES_DMAED:
375 ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __FUNCTION__, phy_id);
376 asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id);
377 break;
378 case PRIMITIVE_RECVD:
379 ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __FUNCTION__,
380 phy_id);
381 asd_primitive_rcvd_tasklet(ascb, dl, phy_id);
382 break;
383 case PHY_EVENT:
384 ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __FUNCTION__, phy_id);
385 asd_phy_event_tasklet(ascb, dl);
386 break;
387 case LINK_RESET_ERROR:
388 ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __FUNCTION__,
389 phy_id);
390 asd_link_reset_err_tasklet(ascb, dl, phy_id);
391 break;
392 case TIMER_EVENT:
393 ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n",
394 __FUNCTION__, phy_id);
395 asd_turn_led(asd_ha, phy_id, 0);
396 /* the device is gone */
397 sas_phy_disconnected(sas_phy);
398 sas_ha->notify_port_event(sas_phy, PORTE_TIMER_EVENT);
399 break;
400 case REQ_TASK_ABORT:
401 ASD_DPRINTK("%s: phy%d: REQ_TASK_ABORT\n", __FUNCTION__,
402 phy_id);
403 break;
404 case REQ_DEVICE_RESET:
405 ASD_DPRINTK("%s: phy%d: REQ_DEVICE_RESET\n", __FUNCTION__,
406 phy_id);
407 break;
408 case SIGNAL_NCQ_ERROR:
409 ASD_DPRINTK("%s: phy%d: SIGNAL_NCQ_ERROR\n", __FUNCTION__,
410 phy_id);
411 break;
412 case CLEAR_NCQ_ERROR:
413 ASD_DPRINTK("%s: phy%d: CLEAR_NCQ_ERROR\n", __FUNCTION__,
414 phy_id);
415 break;
416 default:
417 ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __FUNCTION__,
418 phy_id, sb_opcode);
419 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
420 edb, dl->opcode);
421 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
422 sb_opcode, phy_id);
423 ASD_DPRINTK("escb: vaddr: 0x%p, "
424 "dma_handle: 0x%llx, next: 0x%llx, "
425 "index:%d, opcode:0x%02x\n",
426 ascb->dma_scb.vaddr,
427 (unsigned long long)ascb->dma_scb.dma_handle,
428 (unsigned long long)
429 le64_to_cpu(ascb->scb->header.next_scb),
430 le16_to_cpu(ascb->scb->header.index),
431 ascb->scb->header.opcode);
432
433 break;
434 }
435
436 asd_invalidate_edb(ascb, edb);
437}
438
439int asd_init_post_escbs(struct asd_ha_struct *asd_ha)
440{
441 struct asd_seq_data *seq = &asd_ha->seq;
442 int i;
443
444 for (i = 0; i < seq->num_escbs; i++)
445 seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete;
446
447 ASD_DPRINTK("posting %d escbs\n", i);
448 return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs);
449}
450
451/* ---------- CONTROL PHY ---------- */
452
453#define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \
454 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
455 | CURRENT_OOB_ERROR)
456
457/**
458 * control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb
459 * @ascb: pointer to an ascb
460 * @dl: pointer to the done list entry
461 *
462 * This function completes a CONTROL PHY scb and frees the ascb.
463 * A note on LEDs:
464 * - an LED blinks if there is IO though it,
465 * - if a device is connected to the LED, it is lit,
466 * - if no device is connected to the LED, is is dimmed (off).
467 */
468static void control_phy_tasklet_complete(struct asd_ascb *ascb,
469 struct done_list_struct *dl)
470{
471 struct asd_ha_struct *asd_ha = ascb->ha;
472 struct scb *scb = ascb->scb;
473 struct control_phy *control_phy = &scb->control_phy;
474 u8 phy_id = control_phy->phy_id;
475 struct asd_phy *phy = &ascb->ha->phys[phy_id];
476
477 u8 status = dl->status_block[0];
478 u8 oob_status = dl->status_block[1];
479 u8 oob_mode = dl->status_block[2];
480 /* u8 oob_signals= dl->status_block[3]; */
481
482 if (status != 0) {
483 ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n",
484 __FUNCTION__, phy_id, status);
485 goto out;
486 }
487
488 switch (control_phy->sub_func) {
489 case DISABLE_PHY:
490 asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id);
491 asd_turn_led(asd_ha, phy_id, 0);
492 asd_control_led(asd_ha, phy_id, 0);
493 ASD_DPRINTK("%s: disable phy%d\n", __FUNCTION__, phy_id);
494 break;
495
496 case ENABLE_PHY:
497 asd_control_led(asd_ha, phy_id, 1);
498 if (oob_status & CURRENT_OOB_DONE) {
499 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
500 get_lrate_mode(phy, oob_mode);
501 asd_turn_led(asd_ha, phy_id, 1);
502 ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n",
503 __FUNCTION__, phy_id,phy->sas_phy.linkrate,
504 phy->sas_phy.iproto);
505 } else if (oob_status & CURRENT_SPINUP_HOLD) {
506 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
507 asd_turn_led(asd_ha, phy_id, 1);
508 ASD_DPRINTK("%s: phy%d, spinup hold\n", __FUNCTION__,
509 phy_id);
510 } else if (oob_status & CURRENT_ERR_MASK) {
511 asd_turn_led(asd_ha, phy_id, 0);
512 ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n",
513 __FUNCTION__, phy_id, oob_status);
514 } else if (oob_status & (CURRENT_HOT_PLUG_CNCT
515 | CURRENT_DEVICE_PRESENT)) {
516 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
517 asd_turn_led(asd_ha, phy_id, 1);
518 ASD_DPRINTK("%s: phy%d: hot plug or device present\n",
519 __FUNCTION__, phy_id);
520 } else {
521 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
522 asd_turn_led(asd_ha, phy_id, 0);
523 ASD_DPRINTK("%s: phy%d: no device present: "
524 "oob_status:0x%x\n",
525 __FUNCTION__, phy_id, oob_status);
526 }
527 break;
528 case RELEASE_SPINUP_HOLD:
529 case PHY_NO_OP:
530 case EXECUTE_HARD_RESET:
531 ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __FUNCTION__,
532 phy_id, control_phy->sub_func);
533 /* XXX finish */
534 break;
535 default:
536 ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __FUNCTION__,
537 phy_id, control_phy->sub_func);
538 break;
539 }
540out:
541 asd_ascb_free(ascb);
542}
543
544static inline void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd)
545{
546 /* disable all speeds, then enable defaults */
547 *speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS
548 | SATA_SPEED_30_DIS | SATA_SPEED_15_DIS;
549
550 switch (pd->max_sas_lrate) {
551 case SAS_LINK_RATE_6_0_GBPS:
552 *speed_mask &= ~SAS_SPEED_60_DIS;
553 default:
554 case SAS_LINK_RATE_3_0_GBPS:
555 *speed_mask &= ~SAS_SPEED_30_DIS;
556 case SAS_LINK_RATE_1_5_GBPS:
557 *speed_mask &= ~SAS_SPEED_15_DIS;
558 }
559
560 switch (pd->min_sas_lrate) {
561 case SAS_LINK_RATE_6_0_GBPS:
562 *speed_mask |= SAS_SPEED_30_DIS;
563 case SAS_LINK_RATE_3_0_GBPS:
564 *speed_mask |= SAS_SPEED_15_DIS;
565 default:
566 case SAS_LINK_RATE_1_5_GBPS:
567 /* nothing to do */
568 ;
569 }
570
571 switch (pd->max_sata_lrate) {
572 case SAS_LINK_RATE_3_0_GBPS:
573 *speed_mask &= ~SATA_SPEED_30_DIS;
574 default:
575 case SAS_LINK_RATE_1_5_GBPS:
576 *speed_mask &= ~SATA_SPEED_15_DIS;
577 }
578
579 switch (pd->min_sata_lrate) {
580 case SAS_LINK_RATE_3_0_GBPS:
581 *speed_mask |= SATA_SPEED_15_DIS;
582 default:
583 case SAS_LINK_RATE_1_5_GBPS:
584 /* nothing to do */
585 ;
586 }
587}
588
589/**
590 * asd_build_control_phy -- build a CONTROL PHY SCB
591 * @ascb: pointer to an ascb
592 * @phy_id: phy id to control, integer
593 * @subfunc: subfunction, what to actually to do the phy
594 *
595 * This function builds a CONTROL PHY scb. No allocation of any kind
596 * is performed. @ascb is allocated with the list function.
597 * The caller can override the ascb->tasklet_complete to point
598 * to its own callback function. It must call asd_ascb_free()
599 * at its tasklet complete function.
600 * See the default implementation.
601 */
602void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc)
603{
604 struct asd_phy *phy = &ascb->ha->phys[phy_id];
605 struct scb *scb = ascb->scb;
606 struct control_phy *control_phy = &scb->control_phy;
607
608 scb->header.opcode = CONTROL_PHY;
609 control_phy->phy_id = (u8) phy_id;
610 control_phy->sub_func = subfunc;
611
612 switch (subfunc) {
613 case EXECUTE_HARD_RESET: /* 0x81 */
614 case ENABLE_PHY: /* 0x01 */
615 /* decide hot plug delay */
616 control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT;
617
618 /* decide speed mask */
619 set_speed_mask(&control_phy->speed_mask, phy->phy_desc);
620
621 /* initiator port settings are in the hi nibble */
622 if (phy->sas_phy.role == PHY_ROLE_INITIATOR)
623 control_phy->port_type = SAS_PROTO_ALL << 4;
624 else if (phy->sas_phy.role == PHY_ROLE_TARGET)
625 control_phy->port_type = SAS_PROTO_ALL;
626 else
627 control_phy->port_type =
628 (SAS_PROTO_ALL << 4) | SAS_PROTO_ALL;
629
630 /* link reset retries, this should be nominal */
631 control_phy->link_reset_retries = 10;
632
633 case RELEASE_SPINUP_HOLD: /* 0x02 */
634 /* decide the func_mask */
635 control_phy->func_mask = FUNCTION_MASK_DEFAULT;
636 if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD)
637 control_phy->func_mask &= ~SPINUP_HOLD_DIS;
638 else
639 control_phy->func_mask |= SPINUP_HOLD_DIS;
640 }
641
642 control_phy->conn_handle = cpu_to_le16(0xFFFF);
643
644 ascb->tasklet_complete = control_phy_tasklet_complete;
645}
646
647/* ---------- INITIATE LINK ADM TASK ---------- */
648
649static void link_adm_tasklet_complete(struct asd_ascb *ascb,
650 struct done_list_struct *dl)
651{
652 u8 opcode = dl->opcode;
653 struct initiate_link_adm *link_adm = &ascb->scb->link_adm;
654 u8 phy_id = link_adm->phy_id;
655
656 if (opcode != TC_NO_ERROR) {
657 asd_printk("phy%d: link adm task 0x%x completed with error "
658 "0x%x\n", phy_id, link_adm->sub_func, opcode);
659 }
660 ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n",
661 phy_id, link_adm->sub_func, opcode);
662
663 asd_ascb_free(ascb);
664}
665
666void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id,
667 u8 subfunc)
668{
669 struct scb *scb = ascb->scb;
670 struct initiate_link_adm *link_adm = &scb->link_adm;
671
672 scb->header.opcode = INITIATE_LINK_ADM_TASK;
673
674 link_adm->phy_id = phy_id;
675 link_adm->sub_func = subfunc;
676 link_adm->conn_handle = cpu_to_le16(0xFFFF);
677
678 ascb->tasklet_complete = link_adm_tasklet_complete;
679}
680
681/* ---------- SCB timer ---------- */
682
683/**
684 * asd_ascb_timedout -- called when a pending SCB's timer has expired
685 * @data: unsigned long, a pointer to the ascb in question
686 *
687 * This is the default timeout function which does the most necessary.
688 * Upper layers can implement their own timeout function, say to free
689 * resources they have with this SCB, and then call this one at the
690 * end of their timeout function. To do this, one should initialize
691 * the ascb->timer.{function, data, expires} prior to calling the post
692 * funcion. The timer is started by the post function.
693 */
694void asd_ascb_timedout(unsigned long data)
695{
696 struct asd_ascb *ascb = (void *) data;
697 struct asd_seq_data *seq = &ascb->ha->seq;
698 unsigned long flags;
699
700 ASD_DPRINTK("scb:0x%x timed out\n", ascb->scb->header.opcode);
701
702 spin_lock_irqsave(&seq->pend_q_lock, flags);
703 seq->pending--;
704 list_del_init(&ascb->list);
705 spin_unlock_irqrestore(&seq->pend_q_lock, flags);
706
707 asd_ascb_free(ascb);
708}
709
710/* ---------- CONTROL PHY ---------- */
711
712/* Given the spec value, return a driver value. */
713static const int phy_func_table[] = {
714 [PHY_FUNC_NOP] = PHY_NO_OP,
715 [PHY_FUNC_LINK_RESET] = ENABLE_PHY,
716 [PHY_FUNC_HARD_RESET] = EXECUTE_HARD_RESET,
717 [PHY_FUNC_DISABLE] = DISABLE_PHY,
718 [PHY_FUNC_RELEASE_SPINUP_HOLD] = RELEASE_SPINUP_HOLD,
719};
720
721int asd_control_phy(struct asd_sas_phy *phy, enum phy_func func, void *arg)
722{
723 struct asd_ha_struct *asd_ha = phy->ha->lldd_ha;
724 struct asd_phy_desc *pd = asd_ha->phys[phy->id].phy_desc;
725 struct asd_ascb *ascb;
726 struct sas_phy_linkrates *rates;
727 int res = 1;
728
729 switch (func) {
730 case PHY_FUNC_CLEAR_ERROR_LOG:
731 return -ENOSYS;
732 case PHY_FUNC_SET_LINK_RATE:
733 rates = arg;
734 if (rates->minimum_linkrate) {
735 pd->min_sas_lrate = rates->minimum_linkrate;
736 pd->min_sata_lrate = rates->minimum_linkrate;
737 }
738 if (rates->maximum_linkrate) {
739 pd->max_sas_lrate = rates->maximum_linkrate;
740 pd->max_sata_lrate = rates->maximum_linkrate;
741 }
742 func = PHY_FUNC_LINK_RESET;
743 break;
744 default:
745 break;
746 }
747
748 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
749 if (!ascb)
750 return -ENOMEM;
751
752 asd_build_control_phy(ascb, phy->id, phy_func_table[func]);
753 res = asd_post_ascb_list(asd_ha, ascb , 1);
754 if (res)
755 asd_ascb_free(ascb);
756
757 return res;
758}
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-29 11:38:40 -0400