2 * Aic94xx SAS/SATA driver SCB management.
4 * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
5 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
7 * This file is licensed under GPLv2.
9 * This file is part of the aic94xx driver.
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
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.
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
27 #include <linux/pci.h>
30 #include "aic94xx_reg.h"
31 #include "aic94xx_hwi.h"
32 #include "aic94xx_seq.h"
34 #include "aic94xx_dump.h"
36 /* ---------- EMPTY SCB ---------- */
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
49 #define PHY_EVENTS_STATUS (CURRENT_LOSS_OF_SIGNAL | CURRENT_OOB_DONE \
50 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
53 static inline void get_lrate_mode(struct asd_phy *phy, u8 oob_mode)
55 struct sas_phy *sas_phy = phy->sas_phy.phy;
57 switch (oob_mode & 7) {
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;
64 phy->sas_phy.linkrate = SAS_LINK_RATE_3_0_GBPS;
65 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_3_0_GBPS;
68 phy->sas_phy.linkrate = SAS_LINK_RATE_1_5_GBPS;
69 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_1_5_GBPS;
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;
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;
84 static inline void asd_phy_event_tasklet(struct asd_ascb *ascb,
85 struct done_list_struct *dl)
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];
92 u8 oob_status = dl->status_block[1] & PHY_EVENTS_STATUS;
93 u8 oob_mode = dl->status_block[2];
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);
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);
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);
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);
127 /* If phys are enabled sparsely, this will do the right thing. */
128 static inline unsigned ord_phy(struct asd_ha_struct *asd_ha,
131 u8 enabled_mask = asd_ha->hw_prof.enabled_phys;
134 for_each_phy(enabled_mask, enabled_mask, i) {
135 if (&asd_ha->phys[i] == phy)
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
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
151 * LOCKING: the frame_rcvd_lock needs to be held since this parses the frame
154 static inline void asd_get_attached_sas_addr(struct asd_phy *phy, u8 *sas_addr)
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);
162 addr += asd_ha->hw_prof.sata_name_base + ord_phy(asd_ha, phy);
163 *(__be64 *)sas_addr = cpu_to_be64(addr);
165 struct sas_identify_frame *idframe =
166 (void *) phy->sas_phy.frame_rcvd;
167 memcpy(sas_addr, idframe->sas_addr, SAS_ADDR_SIZE);
171 static void asd_form_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
174 struct asd_port *free_port = NULL;
175 struct asd_port *port;
176 struct asd_sas_phy *sas_phy = &phy->sas_phy;
179 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags);
180 if (!phy->asd_port) {
181 for (i = 0; i < ASD_MAX_PHYS; i++) {
182 port = &asd_ha->asd_ports[i];
184 /* Check for wide port */
185 if (port->num_phys > 0 &&
186 memcmp(port->sas_addr, sas_phy->sas_addr,
187 SAS_ADDR_SIZE) == 0 &&
188 memcmp(port->attached_sas_addr,
189 sas_phy->attached_sas_addr,
190 SAS_ADDR_SIZE) == 0) {
194 /* Find a free port */
195 if (port->num_phys == 0 && free_port == NULL) {
200 /* Use a free port if this doesn't form a wide port */
201 if (i >= ASD_MAX_PHYS) {
204 memcpy(port->sas_addr, sas_phy->sas_addr,
206 memcpy(port->attached_sas_addr,
207 sas_phy->attached_sas_addr,
211 port->phy_mask |= (1U << sas_phy->id);
212 phy->asd_port = port;
214 ASD_DPRINTK("%s: updating phy_mask 0x%x for phy%d\n",
215 __FUNCTION__, phy->asd_port->phy_mask, sas_phy->id);
216 asd_update_port_links(asd_ha, phy);
217 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags);
220 static void asd_deform_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
222 struct asd_port *port = phy->asd_port;
223 struct asd_sas_phy *sas_phy = &phy->sas_phy;
226 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags);
229 port->phy_mask &= ~(1U << sas_phy->id);
230 phy->asd_port = NULL;
232 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags);
235 static inline void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb,
236 struct done_list_struct *dl,
237 int edb_id, int phy_id)
240 int edb_el = edb_id + ascb->edb_index;
241 struct asd_dma_tok *edb = ascb->ha->seq.edb_arr[edb_el];
242 struct asd_phy *phy = &ascb->ha->phys[phy_id];
243 struct sas_ha_struct *sas_ha = phy->sas_phy.ha;
244 u16 size = ((dl->status_block[3] & 7) << 8) | dl->status_block[2];
246 size = min(size, (u16) sizeof(phy->frame_rcvd));
248 spin_lock_irqsave(&phy->sas_phy.frame_rcvd_lock, flags);
249 memcpy(phy->sas_phy.frame_rcvd, edb->vaddr, size);
250 phy->sas_phy.frame_rcvd_size = size;
251 asd_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr);
252 spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags);
253 asd_dump_frame_rcvd(phy, dl);
254 asd_form_port(ascb->ha, phy);
255 sas_ha->notify_port_event(&phy->sas_phy, PORTE_BYTES_DMAED);
258 static inline void asd_link_reset_err_tasklet(struct asd_ascb *ascb,
259 struct done_list_struct *dl,
262 struct asd_ha_struct *asd_ha = ascb->ha;
263 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
264 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
265 struct asd_phy *phy = &asd_ha->phys[phy_id];
266 u8 lr_error = dl->status_block[1];
267 u8 retries_left = dl->status_block[2];
271 ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id);
274 ASD_DPRINTK("phy%d: Loss of signal\n", phy_id);
277 ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id);
280 ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id);
283 ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n",
288 asd_turn_led(asd_ha, phy_id, 0);
289 sas_phy_disconnected(sas_phy);
290 asd_deform_port(asd_ha, phy);
291 sas_ha->notify_port_event(sas_phy, PORTE_LINK_RESET_ERR);
293 if (retries_left == 0) {
295 struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num,
298 asd_printk("%s: out of memory\n", __FUNCTION__);
301 ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n",
303 asd_build_control_phy(cp, phy_id, ENABLE_PHY);
304 if (asd_post_ascb_list(ascb->ha, cp, 1) != 0)
311 static inline void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb,
312 struct done_list_struct *dl,
316 struct sas_ha_struct *sas_ha = &ascb->ha->sas_ha;
317 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
318 struct asd_ha_struct *asd_ha = ascb->ha;
319 struct asd_phy *phy = &asd_ha->phys[phy_id];
320 u8 reg = dl->status_block[1];
321 u32 cont = dl->status_block[2] << ((reg & 3)*8);
325 case LmPRMSTAT0BYTE0:
331 ASD_DPRINTK("phy%d: BROADCAST change received:%d\n",
333 spin_lock_irqsave(&sas_phy->sas_prim_lock, flags);
334 sas_phy->sas_prim = ffs(cont);
335 spin_unlock_irqrestore(&sas_phy->sas_prim_lock, flags);
336 sas_ha->notify_port_event(sas_phy,PORTE_BROADCAST_RCVD);
340 ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id);
344 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
349 case LmPRMSTAT1BYTE0:
352 ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n",
354 /* The sequencer disables all phys on that port.
355 * We have to re-enable the phys ourselves. */
356 asd_deform_port(asd_ha, phy);
357 sas_ha->notify_port_event(sas_phy, PORTE_HARD_RESET);
361 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
367 ASD_DPRINTK("unknown primitive register:0x%x\n",
368 dl->status_block[1]);
374 * asd_invalidate_edb -- invalidate an EDB and if necessary post the ESCB
375 * @ascb: pointer to Empty SCB
376 * @edb_id: index [0,6] to the empty data buffer which is to be invalidated
378 * After an EDB has been invalidated, if all EDBs in this ESCB have been
379 * invalidated, the ESCB is posted back to the sequencer.
380 * Context is tasklet/IRQ.
382 void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id)
384 struct asd_seq_data *seq = &ascb->ha->seq;
385 struct empty_scb *escb = &ascb->scb->escb;
386 struct sg_el *eb = &escb->eb[edb_id];
387 struct asd_dma_tok *edb = seq->edb_arr[ascb->edb_index + edb_id];
389 memset(edb->vaddr, 0, ASD_EDB_SIZE);
390 eb->flags |= ELEMENT_NOT_VALID;
393 if (escb->num_valid == 0) {
395 /* ASD_DPRINTK("reposting escb: vaddr: 0x%p, "
396 "dma_handle: 0x%08llx, next: 0x%08llx, "
397 "index:%d, opcode:0x%02x\n",
399 (u64)ascb->dma_scb.dma_handle,
400 le64_to_cpu(ascb->scb->header.next_scb),
401 le16_to_cpu(ascb->scb->header.index),
402 ascb->scb->header.opcode);
404 escb->num_valid = ASD_EDBS_PER_SCB;
405 for (i = 0; i < ASD_EDBS_PER_SCB; i++)
406 escb->eb[i].flags = 0;
407 if (!list_empty(&ascb->list))
408 list_del_init(&ascb->list);
409 i = asd_post_escb_list(ascb->ha, ascb, 1);
411 asd_printk("couldn't post escb, err:%d\n", i);
415 static void escb_tasklet_complete(struct asd_ascb *ascb,
416 struct done_list_struct *dl)
418 struct asd_ha_struct *asd_ha = ascb->ha;
419 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
420 int edb = (dl->opcode & DL_PHY_MASK) - 1; /* [0xc1,0xc7] -> [0,6] */
421 u8 sb_opcode = dl->status_block[0];
422 int phy_id = sb_opcode & DL_PHY_MASK;
423 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
424 struct asd_phy *phy = &asd_ha->phys[phy_id];
426 if (edb > 6 || edb < 0) {
427 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
429 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
431 ASD_DPRINTK("escb: vaddr: 0x%p, "
432 "dma_handle: 0x%llx, next: 0x%llx, "
433 "index:%d, opcode:0x%02x\n",
435 (unsigned long long)ascb->dma_scb.dma_handle,
437 le64_to_cpu(ascb->scb->header.next_scb),
438 le16_to_cpu(ascb->scb->header.index),
439 ascb->scb->header.opcode);
442 sb_opcode &= ~DL_PHY_MASK;
446 ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __FUNCTION__, phy_id);
447 asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id);
449 case PRIMITIVE_RECVD:
450 ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __FUNCTION__,
452 asd_primitive_rcvd_tasklet(ascb, dl, phy_id);
455 ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __FUNCTION__, phy_id);
456 asd_phy_event_tasklet(ascb, dl);
458 case LINK_RESET_ERROR:
459 ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __FUNCTION__,
461 asd_link_reset_err_tasklet(ascb, dl, phy_id);
464 ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n",
465 __FUNCTION__, phy_id);
466 asd_turn_led(asd_ha, phy_id, 0);
467 /* the device is gone */
468 sas_phy_disconnected(sas_phy);
469 asd_deform_port(asd_ha, phy);
470 sas_ha->notify_port_event(sas_phy, PORTE_TIMER_EVENT);
473 ASD_DPRINTK("%s: phy%d: REQ_TASK_ABORT\n", __FUNCTION__,
476 case REQ_DEVICE_RESET:
477 ASD_DPRINTK("%s: phy%d: REQ_DEVICE_RESET\n", __FUNCTION__,
480 case SIGNAL_NCQ_ERROR:
481 ASD_DPRINTK("%s: phy%d: SIGNAL_NCQ_ERROR\n", __FUNCTION__,
484 case CLEAR_NCQ_ERROR:
485 ASD_DPRINTK("%s: phy%d: CLEAR_NCQ_ERROR\n", __FUNCTION__,
489 ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __FUNCTION__,
491 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
493 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
495 ASD_DPRINTK("escb: vaddr: 0x%p, "
496 "dma_handle: 0x%llx, next: 0x%llx, "
497 "index:%d, opcode:0x%02x\n",
499 (unsigned long long)ascb->dma_scb.dma_handle,
501 le64_to_cpu(ascb->scb->header.next_scb),
502 le16_to_cpu(ascb->scb->header.index),
503 ascb->scb->header.opcode);
508 asd_invalidate_edb(ascb, edb);
511 int asd_init_post_escbs(struct asd_ha_struct *asd_ha)
513 struct asd_seq_data *seq = &asd_ha->seq;
516 for (i = 0; i < seq->num_escbs; i++)
517 seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete;
519 ASD_DPRINTK("posting %d escbs\n", i);
520 return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs);
523 /* ---------- CONTROL PHY ---------- */
525 #define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \
526 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
530 * control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb
531 * @ascb: pointer to an ascb
532 * @dl: pointer to the done list entry
534 * This function completes a CONTROL PHY scb and frees the ascb.
536 * - an LED blinks if there is IO though it,
537 * - if a device is connected to the LED, it is lit,
538 * - if no device is connected to the LED, is is dimmed (off).
540 static void control_phy_tasklet_complete(struct asd_ascb *ascb,
541 struct done_list_struct *dl)
543 struct asd_ha_struct *asd_ha = ascb->ha;
544 struct scb *scb = ascb->scb;
545 struct control_phy *control_phy = &scb->control_phy;
546 u8 phy_id = control_phy->phy_id;
547 struct asd_phy *phy = &ascb->ha->phys[phy_id];
549 u8 status = dl->status_block[0];
550 u8 oob_status = dl->status_block[1];
551 u8 oob_mode = dl->status_block[2];
552 /* u8 oob_signals= dl->status_block[3]; */
555 ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n",
556 __FUNCTION__, phy_id, status);
560 switch (control_phy->sub_func) {
562 asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id);
563 asd_turn_led(asd_ha, phy_id, 0);
564 asd_control_led(asd_ha, phy_id, 0);
565 ASD_DPRINTK("%s: disable phy%d\n", __FUNCTION__, phy_id);
569 asd_control_led(asd_ha, phy_id, 1);
570 if (oob_status & CURRENT_OOB_DONE) {
571 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
572 get_lrate_mode(phy, oob_mode);
573 asd_turn_led(asd_ha, phy_id, 1);
574 ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n",
575 __FUNCTION__, phy_id,phy->sas_phy.linkrate,
576 phy->sas_phy.iproto);
577 } else if (oob_status & CURRENT_SPINUP_HOLD) {
578 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
579 asd_turn_led(asd_ha, phy_id, 1);
580 ASD_DPRINTK("%s: phy%d, spinup hold\n", __FUNCTION__,
582 } else if (oob_status & CURRENT_ERR_MASK) {
583 asd_turn_led(asd_ha, phy_id, 0);
584 ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n",
585 __FUNCTION__, phy_id, oob_status);
586 } else if (oob_status & (CURRENT_HOT_PLUG_CNCT
587 | CURRENT_DEVICE_PRESENT)) {
588 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
589 asd_turn_led(asd_ha, phy_id, 1);
590 ASD_DPRINTK("%s: phy%d: hot plug or device present\n",
591 __FUNCTION__, phy_id);
593 asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
594 asd_turn_led(asd_ha, phy_id, 0);
595 ASD_DPRINTK("%s: phy%d: no device present: "
597 __FUNCTION__, phy_id, oob_status);
600 case RELEASE_SPINUP_HOLD:
602 case EXECUTE_HARD_RESET:
603 ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __FUNCTION__,
604 phy_id, control_phy->sub_func);
608 ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __FUNCTION__,
609 phy_id, control_phy->sub_func);
616 static inline void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd)
618 /* disable all speeds, then enable defaults */
619 *speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS
620 | SATA_SPEED_30_DIS | SATA_SPEED_15_DIS;
622 switch (pd->max_sas_lrate) {
623 case SAS_LINK_RATE_6_0_GBPS:
624 *speed_mask &= ~SAS_SPEED_60_DIS;
626 case SAS_LINK_RATE_3_0_GBPS:
627 *speed_mask &= ~SAS_SPEED_30_DIS;
628 case SAS_LINK_RATE_1_5_GBPS:
629 *speed_mask &= ~SAS_SPEED_15_DIS;
632 switch (pd->min_sas_lrate) {
633 case SAS_LINK_RATE_6_0_GBPS:
634 *speed_mask |= SAS_SPEED_30_DIS;
635 case SAS_LINK_RATE_3_0_GBPS:
636 *speed_mask |= SAS_SPEED_15_DIS;
638 case SAS_LINK_RATE_1_5_GBPS:
643 switch (pd->max_sata_lrate) {
644 case SAS_LINK_RATE_3_0_GBPS:
645 *speed_mask &= ~SATA_SPEED_30_DIS;
647 case SAS_LINK_RATE_1_5_GBPS:
648 *speed_mask &= ~SATA_SPEED_15_DIS;
651 switch (pd->min_sata_lrate) {
652 case SAS_LINK_RATE_3_0_GBPS:
653 *speed_mask |= SATA_SPEED_15_DIS;
655 case SAS_LINK_RATE_1_5_GBPS:
662 * asd_build_control_phy -- build a CONTROL PHY SCB
663 * @ascb: pointer to an ascb
664 * @phy_id: phy id to control, integer
665 * @subfunc: subfunction, what to actually to do the phy
667 * This function builds a CONTROL PHY scb. No allocation of any kind
668 * is performed. @ascb is allocated with the list function.
669 * The caller can override the ascb->tasklet_complete to point
670 * to its own callback function. It must call asd_ascb_free()
671 * at its tasklet complete function.
672 * See the default implementation.
674 void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc)
676 struct asd_phy *phy = &ascb->ha->phys[phy_id];
677 struct scb *scb = ascb->scb;
678 struct control_phy *control_phy = &scb->control_phy;
680 scb->header.opcode = CONTROL_PHY;
681 control_phy->phy_id = (u8) phy_id;
682 control_phy->sub_func = subfunc;
685 case EXECUTE_HARD_RESET: /* 0x81 */
686 case ENABLE_PHY: /* 0x01 */
687 /* decide hot plug delay */
688 control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT;
690 /* decide speed mask */
691 set_speed_mask(&control_phy->speed_mask, phy->phy_desc);
693 /* initiator port settings are in the hi nibble */
694 if (phy->sas_phy.role == PHY_ROLE_INITIATOR)
695 control_phy->port_type = SAS_PROTO_ALL << 4;
696 else if (phy->sas_phy.role == PHY_ROLE_TARGET)
697 control_phy->port_type = SAS_PROTO_ALL;
699 control_phy->port_type =
700 (SAS_PROTO_ALL << 4) | SAS_PROTO_ALL;
702 /* link reset retries, this should be nominal */
703 control_phy->link_reset_retries = 10;
705 case RELEASE_SPINUP_HOLD: /* 0x02 */
706 /* decide the func_mask */
707 control_phy->func_mask = FUNCTION_MASK_DEFAULT;
708 if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD)
709 control_phy->func_mask &= ~SPINUP_HOLD_DIS;
711 control_phy->func_mask |= SPINUP_HOLD_DIS;
714 control_phy->conn_handle = cpu_to_le16(0xFFFF);
716 ascb->tasklet_complete = control_phy_tasklet_complete;
719 /* ---------- INITIATE LINK ADM TASK ---------- */
721 static void link_adm_tasklet_complete(struct asd_ascb *ascb,
722 struct done_list_struct *dl)
724 u8 opcode = dl->opcode;
725 struct initiate_link_adm *link_adm = &ascb->scb->link_adm;
726 u8 phy_id = link_adm->phy_id;
728 if (opcode != TC_NO_ERROR) {
729 asd_printk("phy%d: link adm task 0x%x completed with error "
730 "0x%x\n", phy_id, link_adm->sub_func, opcode);
732 ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n",
733 phy_id, link_adm->sub_func, opcode);
738 void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id,
741 struct scb *scb = ascb->scb;
742 struct initiate_link_adm *link_adm = &scb->link_adm;
744 scb->header.opcode = INITIATE_LINK_ADM_TASK;
746 link_adm->phy_id = phy_id;
747 link_adm->sub_func = subfunc;
748 link_adm->conn_handle = cpu_to_le16(0xFFFF);
750 ascb->tasklet_complete = link_adm_tasklet_complete;
753 /* ---------- SCB timer ---------- */
756 * asd_ascb_timedout -- called when a pending SCB's timer has expired
757 * @data: unsigned long, a pointer to the ascb in question
759 * This is the default timeout function which does the most necessary.
760 * Upper layers can implement their own timeout function, say to free
761 * resources they have with this SCB, and then call this one at the
762 * end of their timeout function. To do this, one should initialize
763 * the ascb->timer.{function, data, expires} prior to calling the post
764 * funcion. The timer is started by the post function.
766 void asd_ascb_timedout(unsigned long data)
768 struct asd_ascb *ascb = (void *) data;
769 struct asd_seq_data *seq = &ascb->ha->seq;
772 ASD_DPRINTK("scb:0x%x timed out\n", ascb->scb->header.opcode);
774 spin_lock_irqsave(&seq->pend_q_lock, flags);
776 list_del_init(&ascb->list);
777 spin_unlock_irqrestore(&seq->pend_q_lock, flags);
782 /* ---------- CONTROL PHY ---------- */
784 /* Given the spec value, return a driver value. */
785 static const int phy_func_table[] = {
786 [PHY_FUNC_NOP] = PHY_NO_OP,
787 [PHY_FUNC_LINK_RESET] = ENABLE_PHY,
788 [PHY_FUNC_HARD_RESET] = EXECUTE_HARD_RESET,
789 [PHY_FUNC_DISABLE] = DISABLE_PHY,
790 [PHY_FUNC_RELEASE_SPINUP_HOLD] = RELEASE_SPINUP_HOLD,
793 int asd_control_phy(struct asd_sas_phy *phy, enum phy_func func, void *arg)
795 struct asd_ha_struct *asd_ha = phy->ha->lldd_ha;
796 struct asd_phy_desc *pd = asd_ha->phys[phy->id].phy_desc;
797 struct asd_ascb *ascb;
798 struct sas_phy_linkrates *rates;
802 case PHY_FUNC_CLEAR_ERROR_LOG:
804 case PHY_FUNC_SET_LINK_RATE:
806 if (rates->minimum_linkrate) {
807 pd->min_sas_lrate = rates->minimum_linkrate;
808 pd->min_sata_lrate = rates->minimum_linkrate;
810 if (rates->maximum_linkrate) {
811 pd->max_sas_lrate = rates->maximum_linkrate;
812 pd->max_sata_lrate = rates->maximum_linkrate;
814 func = PHY_FUNC_LINK_RESET;
820 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
824 asd_build_control_phy(ascb, phy->id, phy_func_table[func]);
825 res = asd_post_ascb_list(asd_ha, ascb , 1);