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 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 break; 85 case CURRENT_OOB_DONE: 86 /* hot plugged device */ 87 asd_turn_led(asd_ha, phy_id, 1); 88 get_lrate_mode(phy, oob_mode); 89 ASD_DPRINTK("phy%d device plugged: lrate:0x%x, proto:0x%x\n", 90 phy_id, phy->sas_phy.linkrate, phy->sas_phy.iproto); 91 sas_notify_phy_event(&phy->sas_phy, PHYE_OOB_DONE); 92 break; 93 case CURRENT_SPINUP_HOLD: 94 /* hot plug SATA, no COMWAKE sent */ 95 asd_turn_led(asd_ha, phy_id, 1); 96 sas_notify_phy_event(&phy->sas_phy, PHYE_SPINUP_HOLD); 97 break; 98 case CURRENT_GTO_TIMEOUT: 99 case CURRENT_OOB_ERROR: 100 ASD_DPRINTK("phy%d error while OOB: oob status:0x%x\n", phy_id, 101 dl->status_block[1]); 102 asd_turn_led(asd_ha, phy_id, 0); 103 sas_phy_disconnected(&phy->sas_phy); 104 sas_notify_phy_event(&phy->sas_phy, PHYE_OOB_ERROR); 105 break; 106 } 107} 108 109/* If phys are enabled sparsely, this will do the right thing. */ 110static unsigned ord_phy(struct asd_ha_struct *asd_ha, struct asd_phy *phy) 111{ 112 u8 enabled_mask = asd_ha->hw_prof.enabled_phys; 113 int i, k = 0; 114 115 for_each_phy(enabled_mask, enabled_mask, i) { 116 if (&asd_ha->phys[i] == phy) 117 return k; 118 k++; 119 } 120 return 0; 121} 122 123/** 124 * asd_get_attached_sas_addr -- extract/generate attached SAS address 125 * @phy: pointer to asd_phy 126 * @sas_addr: pointer to buffer where the SAS address is to be written 127 * 128 * This function extracts the SAS address from an IDENTIFY frame 129 * received. If OOB is SATA, then a SAS address is generated from the 130 * HA tables. 131 * 132 * LOCKING: the frame_rcvd_lock needs to be held since this parses the frame 133 * buffer. 134 */ 135static void asd_get_attached_sas_addr(struct asd_phy *phy, u8 *sas_addr) 136{ 137 if (phy->sas_phy.frame_rcvd[0] == 0x34 138 && phy->sas_phy.oob_mode == SATA_OOB_MODE) { 139 struct asd_ha_struct *asd_ha = phy->sas_phy.ha->lldd_ha; 140 /* FIS device-to-host */ 141 u64 addr = be64_to_cpu(*(__be64 *)phy->phy_desc->sas_addr); 142 143 addr += asd_ha->hw_prof.sata_name_base + ord_phy(asd_ha, phy); 144 *(__be64 *)sas_addr = cpu_to_be64(addr); 145 } else { 146 struct sas_identify_frame *idframe = 147 (void *) phy->sas_phy.frame_rcvd; 148 memcpy(sas_addr, idframe->sas_addr, SAS_ADDR_SIZE); 149 } 150} 151 152static void asd_form_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy) 153{ 154 int i; 155 struct asd_port *free_port = NULL; 156 struct asd_port *port; 157 struct asd_sas_phy *sas_phy = &phy->sas_phy; 158 unsigned long flags; 159 160 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags); 161 if (!phy->asd_port) { 162 for (i = 0; i < ASD_MAX_PHYS; i++) { 163 port = &asd_ha->asd_ports[i]; 164 165 /* Check for wide port */ 166 if (port->num_phys > 0 && 167 memcmp(port->sas_addr, sas_phy->sas_addr, 168 SAS_ADDR_SIZE) == 0 && 169 memcmp(port->attached_sas_addr, 170 sas_phy->attached_sas_addr, 171 SAS_ADDR_SIZE) == 0) { 172 break; 173 } 174 175 /* Find a free port */ 176 if (port->num_phys == 0 && free_port == NULL) { 177 free_port = port; 178 } 179 } 180 181 /* Use a free port if this doesn't form a wide port */ 182 if (i >= ASD_MAX_PHYS) { 183 port = free_port; 184 BUG_ON(!port); 185 memcpy(port->sas_addr, sas_phy->sas_addr, 186 SAS_ADDR_SIZE); 187 memcpy(port->attached_sas_addr, 188 sas_phy->attached_sas_addr, 189 SAS_ADDR_SIZE); 190 } 191 port->num_phys++; 192 port->phy_mask |= (1U << sas_phy->id); 193 phy->asd_port = port; 194 } 195 ASD_DPRINTK("%s: updating phy_mask 0x%x for phy%d\n", 196 __func__, phy->asd_port->phy_mask, sas_phy->id); 197 asd_update_port_links(asd_ha, phy); 198 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags); 199} 200 201static void asd_deform_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy) 202{ 203 struct asd_port *port = phy->asd_port; 204 struct asd_sas_phy *sas_phy = &phy->sas_phy; 205 unsigned long flags; 206 207 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags); 208 if (port) { 209 port->num_phys--; 210 port->phy_mask &= ~(1U << sas_phy->id); 211 phy->asd_port = NULL; 212 } 213 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags); 214} 215 216static void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb, 217 struct done_list_struct *dl, 218 int edb_id, int phy_id) 219{ 220 unsigned long flags; 221 int edb_el = edb_id + ascb->edb_index; 222 struct asd_dma_tok *edb = ascb->ha->seq.edb_arr[edb_el]; 223 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 224 u16 size = ((dl->status_block[3] & 7) << 8) | dl->status_block[2]; 225 226 size = min(size, (u16) sizeof(phy->frame_rcvd)); 227 228 spin_lock_irqsave(&phy->sas_phy.frame_rcvd_lock, flags); 229 memcpy(phy->sas_phy.frame_rcvd, edb->vaddr, size); 230 phy->sas_phy.frame_rcvd_size = size; 231 asd_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr); 232 spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags); 233 asd_dump_frame_rcvd(phy, dl); 234 asd_form_port(ascb->ha, phy); 235 sas_notify_port_event(&phy->sas_phy, PORTE_BYTES_DMAED); 236} 237 238static void asd_link_reset_err_tasklet(struct asd_ascb *ascb, 239 struct done_list_struct *dl, 240 int phy_id) 241{ 242 struct asd_ha_struct *asd_ha = ascb->ha; 243 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha; 244 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id]; 245 struct asd_phy *phy = &asd_ha->phys[phy_id]; 246 u8 lr_error = dl->status_block[1]; 247 u8 retries_left = dl->status_block[2]; 248 249 switch (lr_error) { 250 case 0: 251 ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id); 252 break; 253 case 1: 254 ASD_DPRINTK("phy%d: Loss of signal\n", phy_id); 255 break; 256 case 2: 257 ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id); 258 break; 259 case 3: 260 ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id); 261 break; 262 default: 263 ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n", 264 phy_id, lr_error); 265 break; 266 } 267 268 asd_turn_led(asd_ha, phy_id, 0); 269 sas_phy_disconnected(sas_phy); 270 asd_deform_port(asd_ha, phy); 271 sas_notify_port_event(sas_phy, PORTE_LINK_RESET_ERR); 272 273 if (retries_left == 0) { 274 int num = 1; 275 struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num, 276 GFP_ATOMIC); 277 if (!cp) { 278 asd_printk("%s: out of memory\n", __func__); 279 goto out; 280 } 281 ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n", 282 phy_id); 283 asd_build_control_phy(cp, phy_id, ENABLE_PHY); 284 if (asd_post_ascb_list(ascb->ha, cp, 1) != 0) 285 asd_ascb_free(cp); 286 } 287out: 288 ; 289} 290 291static void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb, 292 struct done_list_struct *dl, 293 int phy_id) 294{ 295 unsigned long flags; 296 struct sas_ha_struct *sas_ha = &ascb->ha->sas_ha; 297 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id]; 298 struct asd_ha_struct *asd_ha = ascb->ha; 299 struct asd_phy *phy = &asd_ha->phys[phy_id]; 300 u8 reg = dl->status_block[1]; 301 u32 cont = dl->status_block[2] << ((reg & 3)*8); 302 303 reg &= ~3; 304 switch (reg) { 305 case LmPRMSTAT0BYTE0: 306 switch (cont) { 307 case LmBROADCH: 308 case LmBROADRVCH0: 309 case LmBROADRVCH1: 310 case LmBROADSES: 311 ASD_DPRINTK("phy%d: BROADCAST change received:%d\n", 312 phy_id, cont); 313 spin_lock_irqsave(&sas_phy->sas_prim_lock, flags); 314 sas_phy->sas_prim = ffs(cont); 315 spin_unlock_irqrestore(&sas_phy->sas_prim_lock, flags); 316 sas_notify_port_event(sas_phy, PORTE_BROADCAST_RCVD); 317 break; 318 319 case LmUNKNOWNP: 320 ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id); 321 break; 322 323 default: 324 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n", 325 phy_id, reg, cont); 326 break; 327 } 328 break; 329 case LmPRMSTAT1BYTE0: 330 switch (cont) { 331 case LmHARDRST: 332 ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n", 333 phy_id); 334 /* The sequencer disables all phys on that port. 335 * We have to re-enable the phys ourselves. */ 336 asd_deform_port(asd_ha, phy); 337 sas_notify_port_event(sas_phy, PORTE_HARD_RESET); 338 break; 339 340 default: 341 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n", 342 phy_id, reg, cont); 343 break; 344 } 345 break; 346 default: 347 ASD_DPRINTK("unknown primitive register:0x%x\n", 348 dl->status_block[1]); 349 break; 350 } 351} 352 353/** 354 * asd_invalidate_edb -- invalidate an EDB and if necessary post the ESCB 355 * @ascb: pointer to Empty SCB 356 * @edb_id: index [0,6] to the empty data buffer which is to be invalidated 357 * 358 * After an EDB has been invalidated, if all EDBs in this ESCB have been 359 * invalidated, the ESCB is posted back to the sequencer. 360 * Context is tasklet/IRQ. 361 */ 362void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id) 363{ 364 struct asd_seq_data *seq = &ascb->ha->seq; 365 struct empty_scb *escb = &ascb->scb->escb; 366 struct sg_el *eb = &escb->eb[edb_id]; 367 struct asd_dma_tok *edb = seq->edb_arr[ascb->edb_index + edb_id]; 368 369 memset(edb->vaddr, 0, ASD_EDB_SIZE); 370 eb->flags |= ELEMENT_NOT_VALID; 371 escb->num_valid--; 372 373 if (escb->num_valid == 0) { 374 int i; 375 /* ASD_DPRINTK("reposting escb: vaddr: 0x%p, " 376 "dma_handle: 0x%08llx, next: 0x%08llx, " 377 "index:%d, opcode:0x%02x\n", 378 ascb->dma_scb.vaddr, 379 (u64)ascb->dma_scb.dma_handle, 380 le64_to_cpu(ascb->scb->header.next_scb), 381 le16_to_cpu(ascb->scb->header.index), 382 ascb->scb->header.opcode); 383 */ 384 escb->num_valid = ASD_EDBS_PER_SCB; 385 for (i = 0; i < ASD_EDBS_PER_SCB; i++) 386 escb->eb[i].flags = 0; 387 if (!list_empty(&ascb->list)) 388 list_del_init(&ascb->list); 389 i = asd_post_escb_list(ascb->ha, ascb, 1); 390 if (i) 391 asd_printk("couldn't post escb, err:%d\n", i); 392 } 393} 394 395static void escb_tasklet_complete(struct asd_ascb *ascb, 396 struct done_list_struct *dl) 397{ 398 struct asd_ha_struct *asd_ha = ascb->ha; 399 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha; 400 int edb = (dl->opcode & DL_PHY_MASK) - 1; /* [0xc1,0xc7] -> [0,6] */ 401 u8 sb_opcode = dl->status_block[0]; 402 int phy_id = sb_opcode & DL_PHY_MASK; 403 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id]; 404 struct asd_phy *phy = &asd_ha->phys[phy_id]; 405 406 if (edb > 6 || edb < 0) { 407 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n", 408 edb, dl->opcode); 409 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n", 410 sb_opcode, phy_id); 411 ASD_DPRINTK("escb: vaddr: 0x%p, " 412 "dma_handle: 0x%llx, next: 0x%llx, " 413 "index:%d, opcode:0x%02x\n", 414 ascb->dma_scb.vaddr, 415 (unsigned long long)ascb->dma_scb.dma_handle, 416 (unsigned long long) 417 le64_to_cpu(ascb->scb->header.next_scb), 418 le16_to_cpu(ascb->scb->header.index), 419 ascb->scb->header.opcode); 420 } 421 422 /* Catch these before we mask off the sb_opcode bits */ 423 switch (sb_opcode) { 424 case REQ_TASK_ABORT: { 425 struct asd_ascb *a, *b; 426 u16 tc_abort; 427 struct domain_device *failed_dev = NULL; 428 429 ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n", 430 __func__, dl->status_block[3]); 431 432 /* 433 * Find the task that caused the abort and abort it first. 434 * The sequencer won't put anything on the done list until 435 * that happens. 436 */ 437 tc_abort = *((u16*)(&dl->status_block[1])); 438 tc_abort = le16_to_cpu(tc_abort); 439 440 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) { 441 struct sas_task *task = a->uldd_task; 442 443 if (a->tc_index != tc_abort) 444 continue; 445 446 if (task) { 447 failed_dev = task->dev; 448 sas_task_abort(task); 449 } else { 450 ASD_DPRINTK("R_T_A for non TASK scb 0x%x\n", 451 a->scb->header.opcode); 452 } 453 break; 454 } 455 456 if (!failed_dev) { 457 ASD_DPRINTK("%s: Can't find task (tc=%d) to abort!\n", 458 __func__, tc_abort); 459 goto out; 460 } 461 462 /* 463 * Now abort everything else for that device (hba?) so 464 * that the EH will wake up and do something. 465 */ 466 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) { 467 struct sas_task *task = a->uldd_task; 468 469 if (task && 470 task->dev == failed_dev && 471 a->tc_index != tc_abort) 472 sas_task_abort(task); 473 } 474 475 goto out; 476 } 477 case REQ_DEVICE_RESET: { 478 struct asd_ascb *a; 479 u16 conn_handle; 480 unsigned long flags; 481 struct sas_task *last_dev_task = NULL; 482 483 conn_handle = *((u16*)(&dl->status_block[1])); 484 conn_handle = le16_to_cpu(conn_handle); 485 486 ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __func__, 487 dl->status_block[3]); 488 489 /* Find the last pending task for the device... */ 490 list_for_each_entry(a, &asd_ha->seq.pend_q, list) { 491 u16 x; 492 struct domain_device *dev; 493 struct sas_task *task = a->uldd_task; 494 495 if (!task) 496 continue; 497 dev = task->dev; 498 499 x = (unsigned long)dev->lldd_dev; 500 if (x == conn_handle) 501 last_dev_task = task; 502 } 503 504 if (!last_dev_task) { 505 ASD_DPRINTK("%s: Device reset for idle device %d?\n", 506 __func__, conn_handle); 507 goto out; 508 } 509 510 /* ...and set the reset flag */ 511 spin_lock_irqsave(&last_dev_task->task_state_lock, flags); 512 last_dev_task->task_state_flags |= SAS_TASK_NEED_DEV_RESET; 513 spin_unlock_irqrestore(&last_dev_task->task_state_lock, flags); 514 515 /* Kill all pending tasks for the device */ 516 list_for_each_entry(a, &asd_ha->seq.pend_q, list) { 517 u16 x; 518 struct domain_device *dev; 519 struct sas_task *task = a->uldd_task; 520 521 if (!task) 522 continue; 523 dev = task->dev; 524 525 x = (unsigned long)dev->lldd_dev; 526 if (x == conn_handle) 527 sas_task_abort(task); 528 } 529 530 goto out; 531 } 532 case SIGNAL_NCQ_ERROR: 533 ASD_DPRINTK("%s: SIGNAL_NCQ_ERROR\n", __func__); 534 goto out; 535 case CLEAR_NCQ_ERROR: 536 ASD_DPRINTK("%s: CLEAR_NCQ_ERROR\n", __func__); 537 goto out; 538 } 539 540 sb_opcode &= ~DL_PHY_MASK; 541 542 switch (sb_opcode) { 543 case BYTES_DMAED: 544 ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __func__, phy_id); 545 asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id); 546 break; 547 case PRIMITIVE_RECVD: 548 ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __func__, 549 phy_id); 550 asd_primitive_rcvd_tasklet(ascb, dl, phy_id); 551 break; 552 case PHY_EVENT: 553 ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __func__, phy_id); 554 asd_phy_event_tasklet(ascb, dl); 555 break; 556 case LINK_RESET_ERROR: 557 ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __func__, 558 phy_id); 559 asd_link_reset_err_tasklet(ascb, dl, phy_id); 560 break; 561 case TIMER_EVENT: 562 ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n", 563 __func__, phy_id); 564 asd_turn_led(asd_ha, phy_id, 0); 565 /* the device is gone */ 566 sas_phy_disconnected(sas_phy); 567 asd_deform_port(asd_ha, phy); 568 sas_notify_port_event(sas_phy, PORTE_TIMER_EVENT); 569 break; 570 default: 571 ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __func__, 572 phy_id, sb_opcode); 573 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n", 574 edb, dl->opcode); 575 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n", 576 sb_opcode, phy_id); 577 ASD_DPRINTK("escb: vaddr: 0x%p, " 578 "dma_handle: 0x%llx, next: 0x%llx, " 579 "index:%d, opcode:0x%02x\n", 580 ascb->dma_scb.vaddr, 581 (unsigned long long)ascb->dma_scb.dma_handle, 582 (unsigned long long) 583 le64_to_cpu(ascb->scb->header.next_scb), 584 le16_to_cpu(ascb->scb->header.index), 585 ascb->scb->header.opcode); 586 587 break; 588 } 589out: 590 asd_invalidate_edb(ascb, edb); 591} 592 593int asd_init_post_escbs(struct asd_ha_struct *asd_ha) 594{ 595 struct asd_seq_data *seq = &asd_ha->seq; 596 int i; 597 598 for (i = 0; i < seq->num_escbs; i++) 599 seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete; 600 601 ASD_DPRINTK("posting %d escbs\n", i); 602 return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs); 603} 604 605/* ---------- CONTROL PHY ---------- */ 606 607#define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \ 608 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \ 609 | CURRENT_OOB_ERROR) 610 611/** 612 * control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb 613 * @ascb: pointer to an ascb 614 * @dl: pointer to the done list entry 615 * 616 * This function completes a CONTROL PHY scb and frees the ascb. 617 * A note on LEDs: 618 * - an LED blinks if there is IO though it, 619 * - if a device is connected to the LED, it is lit, 620 * - if no device is connected to the LED, is is dimmed (off). 621 */ 622static void control_phy_tasklet_complete(struct asd_ascb *ascb, 623 struct done_list_struct *dl) 624{ 625 struct asd_ha_struct *asd_ha = ascb->ha; 626 struct scb *scb = ascb->scb; 627 struct control_phy *control_phy = &scb->control_phy; 628 u8 phy_id = control_phy->phy_id; 629 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 630 631 u8 status = dl->status_block[0]; 632 u8 oob_status = dl->status_block[1]; 633 u8 oob_mode = dl->status_block[2]; 634 /* u8 oob_signals= dl->status_block[3]; */ 635 636 if (status != 0) { 637 ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n", 638 __func__, phy_id, status); 639 goto out; 640 } 641 642 switch (control_phy->sub_func) { 643 case DISABLE_PHY: 644 asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id); 645 asd_turn_led(asd_ha, phy_id, 0); 646 asd_control_led(asd_ha, phy_id, 0); 647 ASD_DPRINTK("%s: disable phy%d\n", __func__, phy_id); 648 break; 649 650 case ENABLE_PHY: 651 asd_control_led(asd_ha, phy_id, 1); 652 if (oob_status & CURRENT_OOB_DONE) { 653 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 654 get_lrate_mode(phy, oob_mode); 655 asd_turn_led(asd_ha, phy_id, 1); 656 ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n", 657 __func__, phy_id,phy->sas_phy.linkrate, 658 phy->sas_phy.iproto); 659 } else if (oob_status & CURRENT_SPINUP_HOLD) { 660 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 661 asd_turn_led(asd_ha, phy_id, 1); 662 ASD_DPRINTK("%s: phy%d, spinup hold\n", __func__, 663 phy_id); 664 } else if (oob_status & CURRENT_ERR_MASK) { 665 asd_turn_led(asd_ha, phy_id, 0); 666 ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n", 667 __func__, phy_id, oob_status); 668 } else if (oob_status & (CURRENT_HOT_PLUG_CNCT 669 | CURRENT_DEVICE_PRESENT)) { 670 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 671 asd_turn_led(asd_ha, phy_id, 1); 672 ASD_DPRINTK("%s: phy%d: hot plug or device present\n", 673 __func__, phy_id); 674 } else { 675 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 676 asd_turn_led(asd_ha, phy_id, 0); 677 ASD_DPRINTK("%s: phy%d: no device present: " 678 "oob_status:0x%x\n", 679 __func__, phy_id, oob_status); 680 } 681 break; 682 case RELEASE_SPINUP_HOLD: 683 case PHY_NO_OP: 684 case EXECUTE_HARD_RESET: 685 ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __func__, 686 phy_id, control_phy->sub_func); 687 /* XXX finish */ 688 break; 689 default: 690 ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __func__, 691 phy_id, control_phy->sub_func); 692 break; 693 } 694out: 695 asd_ascb_free(ascb); 696} 697 698static void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd) 699{ 700 /* disable all speeds, then enable defaults */ 701 *speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS 702 | SATA_SPEED_30_DIS | SATA_SPEED_15_DIS; 703 704 switch (pd->max_sas_lrate) { 705 case SAS_LINK_RATE_6_0_GBPS: 706 *speed_mask &= ~SAS_SPEED_60_DIS; 707 fallthrough; 708 default: 709 case SAS_LINK_RATE_3_0_GBPS: 710 *speed_mask &= ~SAS_SPEED_30_DIS; 711 fallthrough; 712 case SAS_LINK_RATE_1_5_GBPS: 713 *speed_mask &= ~SAS_SPEED_15_DIS; 714 } 715 716 switch (pd->min_sas_lrate) { 717 case SAS_LINK_RATE_6_0_GBPS: 718 *speed_mask |= SAS_SPEED_30_DIS; 719 fallthrough; 720 case SAS_LINK_RATE_3_0_GBPS: 721 *speed_mask |= SAS_SPEED_15_DIS; 722 default: 723 case SAS_LINK_RATE_1_5_GBPS: 724 /* nothing to do */ 725 ; 726 } 727 728 switch (pd->max_sata_lrate) { 729 case SAS_LINK_RATE_3_0_GBPS: 730 *speed_mask &= ~SATA_SPEED_30_DIS; 731 fallthrough; 732 default: 733 case SAS_LINK_RATE_1_5_GBPS: 734 *speed_mask &= ~SATA_SPEED_15_DIS; 735 } 736 737 switch (pd->min_sata_lrate) { 738 case SAS_LINK_RATE_3_0_GBPS: 739 *speed_mask |= SATA_SPEED_15_DIS; 740 default: 741 case SAS_LINK_RATE_1_5_GBPS: 742 /* nothing to do */ 743 ; 744 } 745} 746 747/** 748 * asd_build_control_phy -- build a CONTROL PHY SCB 749 * @ascb: pointer to an ascb 750 * @phy_id: phy id to control, integer 751 * @subfunc: subfunction, what to actually to do the phy 752 * 753 * This function builds a CONTROL PHY scb. No allocation of any kind 754 * is performed. @ascb is allocated with the list function. 755 * The caller can override the ascb->tasklet_complete to point 756 * to its own callback function. It must call asd_ascb_free() 757 * at its tasklet complete function. 758 * See the default implementation. 759 */ 760void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc) 761{ 762 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 763 struct scb *scb = ascb->scb; 764 struct control_phy *control_phy = &scb->control_phy; 765 766 scb->header.opcode = CONTROL_PHY; 767 control_phy->phy_id = (u8) phy_id; 768 control_phy->sub_func = subfunc; 769 770 switch (subfunc) { 771 case EXECUTE_HARD_RESET: /* 0x81 */ 772 case ENABLE_PHY: /* 0x01 */ 773 /* decide hot plug delay */ 774 control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT; 775 776 /* decide speed mask */ 777 set_speed_mask(&control_phy->speed_mask, phy->phy_desc); 778 779 /* initiator port settings are in the hi nibble */ 780 if (phy->sas_phy.role == PHY_ROLE_INITIATOR) 781 control_phy->port_type = SAS_PROTOCOL_ALL << 4; 782 else if (phy->sas_phy.role == PHY_ROLE_TARGET) 783 control_phy->port_type = SAS_PROTOCOL_ALL; 784 else 785 control_phy->port_type = 786 (SAS_PROTOCOL_ALL << 4) | SAS_PROTOCOL_ALL; 787 788 /* link reset retries, this should be nominal */ 789 control_phy->link_reset_retries = 10; 790 fallthrough; 791 792 case RELEASE_SPINUP_HOLD: /* 0x02 */ 793 /* decide the func_mask */ 794 control_phy->func_mask = FUNCTION_MASK_DEFAULT; 795 if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD) 796 control_phy->func_mask &= ~SPINUP_HOLD_DIS; 797 else 798 control_phy->func_mask |= SPINUP_HOLD_DIS; 799 } 800 801 control_phy->conn_handle = cpu_to_le16(0xFFFF); 802 803 ascb->tasklet_complete = control_phy_tasklet_complete; 804} 805 806/* ---------- INITIATE LINK ADM TASK ---------- */ 807 808#if 0 809 810static void link_adm_tasklet_complete(struct asd_ascb *ascb, 811 struct done_list_struct *dl) 812{ 813 u8 opcode = dl->opcode; 814 struct initiate_link_adm *link_adm = &ascb->scb->link_adm; 815 u8 phy_id = link_adm->phy_id; 816 817 if (opcode != TC_NO_ERROR) { 818 asd_printk("phy%d: link adm task 0x%x completed with error " 819 "0x%x\n", phy_id, link_adm->sub_func, opcode); 820 } 821 ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n", 822 phy_id, link_adm->sub_func, opcode); 823 824 asd_ascb_free(ascb); 825} 826 827void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id, 828 u8 subfunc) 829{ 830 struct scb *scb = ascb->scb; 831 struct initiate_link_adm *link_adm = &scb->link_adm; 832 833 scb->header.opcode = INITIATE_LINK_ADM_TASK; 834 835 link_adm->phy_id = phy_id; 836 link_adm->sub_func = subfunc; 837 link_adm->conn_handle = cpu_to_le16(0xFFFF); 838 839 ascb->tasklet_complete = link_adm_tasklet_complete; 840} 841 842#endif /* 0 */ 843 844/* ---------- SCB timer ---------- */ 845 846/** 847 * asd_ascb_timedout -- called when a pending SCB's timer has expired 848 * @t: Timer context used to fetch the SCB 849 * 850 * This is the default timeout function which does the most necessary. 851 * Upper layers can implement their own timeout function, say to free 852 * resources they have with this SCB, and then call this one at the 853 * end of their timeout function. To do this, one should initialize 854 * the ascb->timer.{function, expires} prior to calling the post 855 * function. The timer is started by the post function. 856 */ 857void asd_ascb_timedout(struct timer_list *t) 858{ 859 struct asd_ascb *ascb = from_timer(ascb, t, timer); 860 struct asd_seq_data *seq = &ascb->ha->seq; 861 unsigned long flags; 862 863 ASD_DPRINTK("scb:0x%x timed out\n", ascb->scb->header.opcode); 864 865 spin_lock_irqsave(&seq->pend_q_lock, flags); 866 seq->pending--; 867 list_del_init(&ascb->list); 868 spin_unlock_irqrestore(&seq->pend_q_lock, flags); 869 870 asd_ascb_free(ascb); 871} 872 873/* ---------- CONTROL PHY ---------- */ 874 875/* Given the spec value, return a driver value. */ 876static const int phy_func_table[] = { 877 [PHY_FUNC_NOP] = PHY_NO_OP, 878 [PHY_FUNC_LINK_RESET] = ENABLE_PHY, 879 [PHY_FUNC_HARD_RESET] = EXECUTE_HARD_RESET, 880 [PHY_FUNC_DISABLE] = DISABLE_PHY, 881 [PHY_FUNC_RELEASE_SPINUP_HOLD] = RELEASE_SPINUP_HOLD, 882}; 883 884int asd_control_phy(struct asd_sas_phy *phy, enum phy_func func, void *arg) 885{ 886 struct asd_ha_struct *asd_ha = phy->ha->lldd_ha; 887 struct asd_phy_desc *pd = asd_ha->phys[phy->id].phy_desc; 888 struct asd_ascb *ascb; 889 struct sas_phy_linkrates *rates; 890 int res = 1; 891 892 switch (func) { 893 case PHY_FUNC_CLEAR_ERROR_LOG: 894 case PHY_FUNC_GET_EVENTS: 895 return -ENOSYS; 896 case PHY_FUNC_SET_LINK_RATE: 897 rates = arg; 898 if (rates->minimum_linkrate) { 899 pd->min_sas_lrate = rates->minimum_linkrate; 900 pd->min_sata_lrate = rates->minimum_linkrate; 901 } 902 if (rates->maximum_linkrate) { 903 pd->max_sas_lrate = rates->maximum_linkrate; 904 pd->max_sata_lrate = rates->maximum_linkrate; 905 } 906 func = PHY_FUNC_LINK_RESET; 907 break; 908 default: 909 break; 910 } 911 912 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); 913 if (!ascb) 914 return -ENOMEM; 915 916 asd_build_control_phy(ascb, phy->id, phy_func_table[func]); 917 res = asd_post_ascb_list(asd_ha, ascb , 1); 918 if (res) 919 asd_ascb_free(ascb); 920 921 return res; 922} 923