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1// SPDX-License-Identifier: GPL-2.0-only2/*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 722#define BYTES_DMAED 023#define PRIMITIVE_RECVD 0x0824#define PHY_EVENT 0x1025#define LINK_RESET_ERROR 0x1826#define TIMER_EVENT 0x2027#define REQ_TASK_ABORT 0xF028#define REQ_DEVICE_RESET 0xF129#define SIGNAL_NCQ_ERROR 0xF230#define CLEAR_NCQ_ERROR 0xF331 32#define PHY_EVENTS_STATUS (CURRENT_LOSS_OF_SIGNAL | CURRENT_OOB_DONE \33 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \34 | CURRENT_OOB_ERROR)35 36static 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 67static 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. */112static 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 address127 * @phy: pointer to asd_phy128 * @sas_addr: pointer to buffer where the SAS address is to be written129 *130 * This function extracts the SAS address from an IDENTIFY frame131 * received. If OOB is SATA, then a SAS address is generated from the132 * HA tables.133 *134 * LOCKING: the frame_rcvd_lock needs to be held since this parses the frame135 * buffer.136 */137static void asd_get_attached_sas_addr(struct asd_phy *phy, u8 *sas_addr)138{139 if (phy->sas_phy.frame_rcvd[0] == 0x34140 && 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 154static 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 203static 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 218static 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 240static 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 }289out:290 ;291}292 293static 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 ESCB359 * @ascb: pointer to Empty SCB360 * @edb_id: index [0,6] to the empty data buffer which is to be invalidated361 *362 * After an EDB has been invalidated, if all EDBs in this ESCB have been363 * invalidated, the ESCB is posted back to the sequencer.364 * Context is tasklet/IRQ.365 */366void 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 399static 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 until439 * 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?) so468 * 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 }593out:594 asd_invalidate_edb(ascb, edb);595}596 597int 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 ascb617 * @ascb: pointer to an ascb618 * @dl: pointer to the done list entry619 *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 */626static 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_CNCT673 | 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 }698out:699 asd_ascb_free(ascb);700}701 702static 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_DIS706 | 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 SCB755 * @ascb: pointer to an ascb756 * @phy_id: phy id to control, integer757 * @subfunc: subfunction, what to actually to do the phy758 *759 * This function builds a CONTROL PHY scb. No allocation of any kind760 * is performed. @ascb is allocated with the list function.761 * The caller can override the ascb->tasklet_complete to point762 * to its own callback function. It must call asd_ascb_free()763 * at its tasklet complete function.764 * See the default implementation.765 */766void 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 else791 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 else804 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 0815 816static 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 833void 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 expired854 * @t: Timer context used to fetch the SCB855 *856 * This is the default timeout function which does the most necessary.857 * Upper layers can implement their own timeout function, say to free858 * resources they have with this SCB, and then call this one at the859 * end of their timeout function. To do this, one should initialize860 * the ascb->timer.{function, expires} prior to calling the post861 * function. The timer is started by the post function.862 */863void 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. */882static 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 890int 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}929