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 <scsi/scsi_host.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 53 static 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 84 static 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. */ 128 static 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 */ 154 static 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 } 170 171 static void asd_form_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy) 172 { 173 int i; 174 struct asd_port *free_port = NULL; 175 struct asd_port *port; 176 struct asd_sas_phy *sas_phy = &phy->sas_phy; 177 unsigned long flags; 178 179 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]; 183 184 /* 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) { 191 break; 192 } 193 194 /* Find a free port */ 195 if (port->num_phys == 0 && free_port == NULL) { 196 free_port = port; 197 } 198 } 199 200 /* Use a free port if this doesn't form a wide port */ 201 if (i >= ASD_MAX_PHYS) { 202 port = free_port; 203 BUG_ON(!port); 204 memcpy(port->sas_addr, sas_phy->sas_addr, 205 SAS_ADDR_SIZE); 206 memcpy(port->attached_sas_addr, 207 sas_phy->attached_sas_addr, 208 SAS_ADDR_SIZE); 209 } 210 port->num_phys++; 211 port->phy_mask |= (1U << sas_phy->id); 212 phy->asd_port = port; 213 } 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); 218 } 219 220 static void asd_deform_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy) 221 { 222 struct asd_port *port = phy->asd_port; 223 struct asd_sas_phy *sas_phy = &phy->sas_phy; 224 unsigned long flags; 225 226 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags); 227 if (port) { 228 port->num_phys--; 229 port->phy_mask &= ~(1U << sas_phy->id); 230 phy->asd_port = NULL; 231 } 232 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags); 233 } 234 235 static inline void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb, 236 struct done_list_struct *dl, 237 int edb_id, int phy_id) 238 { 239 unsigned long flags; 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]; 245 246 size = min(size, (u16) sizeof(phy->frame_rcvd)); 247 248 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); 256 } 257 258 static inline void asd_link_reset_err_tasklet(struct asd_ascb *ascb, 259 struct done_list_struct *dl, 260 int phy_id) 261 { 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]; 268 269 switch (lr_error) { 270 case 0: 271 ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id); 272 break; 273 case 1: 274 ASD_DPRINTK("phy%d: Loss of signal\n", phy_id); 275 break; 276 case 2: 277 ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id); 278 break; 279 case 3: 280 ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id); 281 break; 282 default: 283 ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n", 284 phy_id, lr_error); 285 break; 286 } 287 288 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); 292 293 if (retries_left == 0) { 294 int num = 1; 295 struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num, 296 GFP_ATOMIC); 297 if (!cp) { 298 asd_printk("%s: out of memory\n", __FUNCTION__); 299 goto out; 300 } 301 ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n", 302 phy_id); 303 asd_build_control_phy(cp, phy_id, ENABLE_PHY); 304 if (asd_post_ascb_list(ascb->ha, cp, 1) != 0) 305 asd_ascb_free(cp); 306 } 307 out: 308 ; 309 } 310 311 static inline void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb, 312 struct done_list_struct *dl, 313 int phy_id) 314 { 315 unsigned long flags; 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); 322 323 reg &= ~3; 324 switch (reg) { 325 case LmPRMSTAT0BYTE0: 326 switch (cont) { 327 case LmBROADCH: 328 case LmBROADRVCH0: 329 case LmBROADRVCH1: 330 case LmBROADSES: 331 ASD_DPRINTK("phy%d: BROADCAST change received:%d\n", 332 phy_id, cont); 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); 337 break; 338 339 case LmUNKNOWNP: 340 ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id); 341 break; 342 343 default: 344 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n", 345 phy_id, reg, cont); 346 break; 347 } 348 break; 349 case LmPRMSTAT1BYTE0: 350 switch (cont) { 351 case LmHARDRST: 352 ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n", 353 phy_id); 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); 358 break; 359 360 default: 361 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n", 362 phy_id, reg, cont); 363 break; 364 } 365 break; 366 default: 367 ASD_DPRINTK("unknown primitive register:0x%x\n", 368 dl->status_block[1]); 369 break; 370 } 371 } 372 373 /** 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 377 * 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. 381 */ 382 void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id) 383 { 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]; 388 389 memset(edb->vaddr, 0, ASD_EDB_SIZE); 390 eb->flags |= ELEMENT_NOT_VALID; 391 escb->num_valid--; 392 393 if (escb->num_valid == 0) { 394 int i; 395 /* ASD_DPRINTK("reposting escb: vaddr: 0x%p, " 396 "dma_handle: 0x%08llx, next: 0x%08llx, " 397 "index:%d, opcode:0x%02x\n", 398 ascb->dma_scb.vaddr, 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); 403 */ 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); 410 if (i) 411 asd_printk("couldn't post escb, err:%d\n", i); 412 } 413 } 414 415 static void escb_tasklet_complete(struct asd_ascb *ascb, 416 struct done_list_struct *dl) 417 { 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]; 425 426 if (edb > 6 || edb < 0) { 427 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n", 428 edb, dl->opcode); 429 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n", 430 sb_opcode, phy_id); 431 ASD_DPRINTK("escb: vaddr: 0x%p, " 432 "dma_handle: 0x%llx, next: 0x%llx, " 433 "index:%d, opcode:0x%02x\n", 434 ascb->dma_scb.vaddr, 435 (unsigned long long)ascb->dma_scb.dma_handle, 436 (unsigned long long) 437 le64_to_cpu(ascb->scb->header.next_scb), 438 le16_to_cpu(ascb->scb->header.index), 439 ascb->scb->header.opcode); 440 } 441 442 /* Catch these before we mask off the sb_opcode bits */ 443 switch (sb_opcode) { 444 case REQ_TASK_ABORT: { 445 struct asd_ascb *a, *b; 446 u16 tc_abort; 447 struct domain_device *failed_dev = NULL; 448 449 ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n", 450 __FUNCTION__, dl->status_block[3]); 451 452 /* 453 * Find the task that caused the abort and abort it first. 454 * The sequencer won't put anything on the done list until 455 * that happens. 456 */ 457 tc_abort = *((u16*)(&dl->status_block[1])); 458 tc_abort = le16_to_cpu(tc_abort); 459 460 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) { 461 struct sas_task *task = ascb->uldd_task; 462 463 if (task && a->tc_index == tc_abort) { 464 failed_dev = task->dev; 465 sas_task_abort(task); 466 break; 467 } 468 } 469 470 if (!failed_dev) { 471 ASD_DPRINTK("%s: Can't find task (tc=%d) to abort!\n", 472 __FUNCTION__, tc_abort); 473 goto out; 474 } 475 476 /* 477 * Now abort everything else for that device (hba?) so 478 * that the EH will wake up and do something. 479 */ 480 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) { 481 struct sas_task *task = ascb->uldd_task; 482 483 if (task && 484 task->dev == failed_dev && 485 a->tc_index != tc_abort) 486 sas_task_abort(task); 487 } 488 489 goto out; 490 } 491 case REQ_DEVICE_RESET: { 492 struct asd_ascb *a; 493 u16 conn_handle; 494 unsigned long flags; 495 struct sas_task *last_dev_task = NULL; 496 497 conn_handle = *((u16*)(&dl->status_block[1])); 498 conn_handle = le16_to_cpu(conn_handle); 499 500 ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __FUNCTION__, 501 dl->status_block[3]); 502 503 /* Find the last pending task for the device... */ 504 list_for_each_entry(a, &asd_ha->seq.pend_q, list) { 505 u16 x; 506 struct domain_device *dev; 507 struct sas_task *task = a->uldd_task; 508 509 if (!task) 510 continue; 511 dev = task->dev; 512 513 x = (unsigned long)dev->lldd_dev; 514 if (x == conn_handle) 515 last_dev_task = task; 516 } 517 518 if (!last_dev_task) { 519 ASD_DPRINTK("%s: Device reset for idle device %d?\n", 520 __FUNCTION__, conn_handle); 521 goto out; 522 } 523 524 /* ...and set the reset flag */ 525 spin_lock_irqsave(&last_dev_task->task_state_lock, flags); 526 last_dev_task->task_state_flags |= SAS_TASK_NEED_DEV_RESET; 527 spin_unlock_irqrestore(&last_dev_task->task_state_lock, flags); 528 529 /* Kill all pending tasks for the device */ 530 list_for_each_entry(a, &asd_ha->seq.pend_q, list) { 531 u16 x; 532 struct domain_device *dev; 533 struct sas_task *task = a->uldd_task; 534 535 if (!task) 536 continue; 537 dev = task->dev; 538 539 x = (unsigned long)dev->lldd_dev; 540 if (x == conn_handle) 541 sas_task_abort(task); 542 } 543 544 goto out; 545 } 546 case SIGNAL_NCQ_ERROR: 547 ASD_DPRINTK("%s: SIGNAL_NCQ_ERROR\n", __FUNCTION__); 548 goto out; 549 case CLEAR_NCQ_ERROR: 550 ASD_DPRINTK("%s: CLEAR_NCQ_ERROR\n", __FUNCTION__); 551 goto out; 552 } 553 554 sb_opcode &= ~DL_PHY_MASK; 555 556 switch (sb_opcode) { 557 case BYTES_DMAED: 558 ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __FUNCTION__, phy_id); 559 asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id); 560 break; 561 case PRIMITIVE_RECVD: 562 ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __FUNCTION__, 563 phy_id); 564 asd_primitive_rcvd_tasklet(ascb, dl, phy_id); 565 break; 566 case PHY_EVENT: 567 ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __FUNCTION__, phy_id); 568 asd_phy_event_tasklet(ascb, dl); 569 break; 570 case LINK_RESET_ERROR: 571 ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __FUNCTION__, 572 phy_id); 573 asd_link_reset_err_tasklet(ascb, dl, phy_id); 574 break; 575 case TIMER_EVENT: 576 ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n", 577 __FUNCTION__, phy_id); 578 asd_turn_led(asd_ha, phy_id, 0); 579 /* the device is gone */ 580 sas_phy_disconnected(sas_phy); 581 asd_deform_port(asd_ha, phy); 582 sas_ha->notify_port_event(sas_phy, PORTE_TIMER_EVENT); 583 break; 584 default: 585 ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __FUNCTION__, 586 phy_id, sb_opcode); 587 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n", 588 edb, dl->opcode); 589 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n", 590 sb_opcode, phy_id); 591 ASD_DPRINTK("escb: vaddr: 0x%p, " 592 "dma_handle: 0x%llx, next: 0x%llx, " 593 "index:%d, opcode:0x%02x\n", 594 ascb->dma_scb.vaddr, 595 (unsigned long long)ascb->dma_scb.dma_handle, 596 (unsigned long long) 597 le64_to_cpu(ascb->scb->header.next_scb), 598 le16_to_cpu(ascb->scb->header.index), 599 ascb->scb->header.opcode); 600 601 break; 602 } 603 out: 604 asd_invalidate_edb(ascb, edb); 605 } 606 607 int asd_init_post_escbs(struct asd_ha_struct *asd_ha) 608 { 609 struct asd_seq_data *seq = &asd_ha->seq; 610 int i; 611 612 for (i = 0; i < seq->num_escbs; i++) 613 seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete; 614 615 ASD_DPRINTK("posting %d escbs\n", i); 616 return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs); 617 } 618 619 /* ---------- CONTROL PHY ---------- */ 620 621 #define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \ 622 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \ 623 | CURRENT_OOB_ERROR) 624 625 /** 626 * control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb 627 * @ascb: pointer to an ascb 628 * @dl: pointer to the done list entry 629 * 630 * This function completes a CONTROL PHY scb and frees the ascb. 631 * A note on LEDs: 632 * - an LED blinks if there is IO though it, 633 * - if a device is connected to the LED, it is lit, 634 * - if no device is connected to the LED, is is dimmed (off). 635 */ 636 static void control_phy_tasklet_complete(struct asd_ascb *ascb, 637 struct done_list_struct *dl) 638 { 639 struct asd_ha_struct *asd_ha = ascb->ha; 640 struct scb *scb = ascb->scb; 641 struct control_phy *control_phy = &scb->control_phy; 642 u8 phy_id = control_phy->phy_id; 643 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 644 645 u8 status = dl->status_block[0]; 646 u8 oob_status = dl->status_block[1]; 647 u8 oob_mode = dl->status_block[2]; 648 /* u8 oob_signals= dl->status_block[3]; */ 649 650 if (status != 0) { 651 ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n", 652 __FUNCTION__, phy_id, status); 653 goto out; 654 } 655 656 switch (control_phy->sub_func) { 657 case DISABLE_PHY: 658 asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id); 659 asd_turn_led(asd_ha, phy_id, 0); 660 asd_control_led(asd_ha, phy_id, 0); 661 ASD_DPRINTK("%s: disable phy%d\n", __FUNCTION__, phy_id); 662 break; 663 664 case ENABLE_PHY: 665 asd_control_led(asd_ha, phy_id, 1); 666 if (oob_status & CURRENT_OOB_DONE) { 667 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 668 get_lrate_mode(phy, oob_mode); 669 asd_turn_led(asd_ha, phy_id, 1); 670 ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n", 671 __FUNCTION__, phy_id,phy->sas_phy.linkrate, 672 phy->sas_phy.iproto); 673 } else if (oob_status & CURRENT_SPINUP_HOLD) { 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, spinup hold\n", __FUNCTION__, 677 phy_id); 678 } else if (oob_status & CURRENT_ERR_MASK) { 679 asd_turn_led(asd_ha, phy_id, 0); 680 ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n", 681 __FUNCTION__, phy_id, oob_status); 682 } else if (oob_status & (CURRENT_HOT_PLUG_CNCT 683 | CURRENT_DEVICE_PRESENT)) { 684 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 685 asd_turn_led(asd_ha, phy_id, 1); 686 ASD_DPRINTK("%s: phy%d: hot plug or device present\n", 687 __FUNCTION__, phy_id); 688 } else { 689 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 690 asd_turn_led(asd_ha, phy_id, 0); 691 ASD_DPRINTK("%s: phy%d: no device present: " 692 "oob_status:0x%x\n", 693 __FUNCTION__, phy_id, oob_status); 694 } 695 break; 696 case RELEASE_SPINUP_HOLD: 697 case PHY_NO_OP: 698 case EXECUTE_HARD_RESET: 699 ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __FUNCTION__, 700 phy_id, control_phy->sub_func); 701 /* XXX finish */ 702 break; 703 default: 704 ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __FUNCTION__, 705 phy_id, control_phy->sub_func); 706 break; 707 } 708 out: 709 asd_ascb_free(ascb); 710 } 711 712 static inline void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd) 713 { 714 /* disable all speeds, then enable defaults */ 715 *speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS 716 | SATA_SPEED_30_DIS | SATA_SPEED_15_DIS; 717 718 switch (pd->max_sas_lrate) { 719 case SAS_LINK_RATE_6_0_GBPS: 720 *speed_mask &= ~SAS_SPEED_60_DIS; 721 default: 722 case SAS_LINK_RATE_3_0_GBPS: 723 *speed_mask &= ~SAS_SPEED_30_DIS; 724 case SAS_LINK_RATE_1_5_GBPS: 725 *speed_mask &= ~SAS_SPEED_15_DIS; 726 } 727 728 switch (pd->min_sas_lrate) { 729 case SAS_LINK_RATE_6_0_GBPS: 730 *speed_mask |= SAS_SPEED_30_DIS; 731 case SAS_LINK_RATE_3_0_GBPS: 732 *speed_mask |= SAS_SPEED_15_DIS; 733 default: 734 case SAS_LINK_RATE_1_5_GBPS: 735 /* nothing to do */ 736 ; 737 } 738 739 switch (pd->max_sata_lrate) { 740 case SAS_LINK_RATE_3_0_GBPS: 741 *speed_mask &= ~SATA_SPEED_30_DIS; 742 default: 743 case SAS_LINK_RATE_1_5_GBPS: 744 *speed_mask &= ~SATA_SPEED_15_DIS; 745 } 746 747 switch (pd->min_sata_lrate) { 748 case SAS_LINK_RATE_3_0_GBPS: 749 *speed_mask |= SATA_SPEED_15_DIS; 750 default: 751 case SAS_LINK_RATE_1_5_GBPS: 752 /* nothing to do */ 753 ; 754 } 755 } 756 757 /** 758 * asd_build_control_phy -- build a CONTROL PHY SCB 759 * @ascb: pointer to an ascb 760 * @phy_id: phy id to control, integer 761 * @subfunc: subfunction, what to actually to do the phy 762 * 763 * This function builds a CONTROL PHY scb. No allocation of any kind 764 * is performed. @ascb is allocated with the list function. 765 * The caller can override the ascb->tasklet_complete to point 766 * to its own callback function. It must call asd_ascb_free() 767 * at its tasklet complete function. 768 * See the default implementation. 769 */ 770 void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc) 771 { 772 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 773 struct scb *scb = ascb->scb; 774 struct control_phy *control_phy = &scb->control_phy; 775 776 scb->header.opcode = CONTROL_PHY; 777 control_phy->phy_id = (u8) phy_id; 778 control_phy->sub_func = subfunc; 779 780 switch (subfunc) { 781 case EXECUTE_HARD_RESET: /* 0x81 */ 782 case ENABLE_PHY: /* 0x01 */ 783 /* decide hot plug delay */ 784 control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT; 785 786 /* decide speed mask */ 787 set_speed_mask(&control_phy->speed_mask, phy->phy_desc); 788 789 /* initiator port settings are in the hi nibble */ 790 if (phy->sas_phy.role == PHY_ROLE_INITIATOR) 791 control_phy->port_type = SAS_PROTO_ALL << 4; 792 else if (phy->sas_phy.role == PHY_ROLE_TARGET) 793 control_phy->port_type = SAS_PROTO_ALL; 794 else 795 control_phy->port_type = 796 (SAS_PROTO_ALL << 4) | SAS_PROTO_ALL; 797 798 /* link reset retries, this should be nominal */ 799 control_phy->link_reset_retries = 10; 800 801 case RELEASE_SPINUP_HOLD: /* 0x02 */ 802 /* decide the func_mask */ 803 control_phy->func_mask = FUNCTION_MASK_DEFAULT; 804 if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD) 805 control_phy->func_mask &= ~SPINUP_HOLD_DIS; 806 else 807 control_phy->func_mask |= SPINUP_HOLD_DIS; 808 } 809 810 control_phy->conn_handle = cpu_to_le16(0xFFFF); 811 812 ascb->tasklet_complete = control_phy_tasklet_complete; 813 } 814 815 /* ---------- INITIATE LINK ADM TASK ---------- */ 816 817 static void link_adm_tasklet_complete(struct asd_ascb *ascb, 818 struct done_list_struct *dl) 819 { 820 u8 opcode = dl->opcode; 821 struct initiate_link_adm *link_adm = &ascb->scb->link_adm; 822 u8 phy_id = link_adm->phy_id; 823 824 if (opcode != TC_NO_ERROR) { 825 asd_printk("phy%d: link adm task 0x%x completed with error " 826 "0x%x\n", phy_id, link_adm->sub_func, opcode); 827 } 828 ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n", 829 phy_id, link_adm->sub_func, opcode); 830 831 asd_ascb_free(ascb); 832 } 833 834 void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id, 835 u8 subfunc) 836 { 837 struct scb *scb = ascb->scb; 838 struct initiate_link_adm *link_adm = &scb->link_adm; 839 840 scb->header.opcode = INITIATE_LINK_ADM_TASK; 841 842 link_adm->phy_id = phy_id; 843 link_adm->sub_func = subfunc; 844 link_adm->conn_handle = cpu_to_le16(0xFFFF); 845 846 ascb->tasklet_complete = link_adm_tasklet_complete; 847 } 848 849 /* ---------- SCB timer ---------- */ 850 851 /** 852 * asd_ascb_timedout -- called when a pending SCB's timer has expired 853 * @data: unsigned long, a pointer to the ascb in question 854 * 855 * This is the default timeout function which does the most necessary. 856 * Upper layers can implement their own timeout function, say to free 857 * resources they have with this SCB, and then call this one at the 858 * end of their timeout function. To do this, one should initialize 859 * the ascb->timer.{function, data, expires} prior to calling the post 860 * funcion. The timer is started by the post function. 861 */ 862 void asd_ascb_timedout(unsigned long data) 863 { 864 struct asd_ascb *ascb = (void *) data; 865 struct asd_seq_data *seq = &ascb->ha->seq; 866 unsigned long flags; 867 868 ASD_DPRINTK("scb:0x%x timed out\n", ascb->scb->header.opcode); 869 870 spin_lock_irqsave(&seq->pend_q_lock, flags); 871 seq->pending--; 872 list_del_init(&ascb->list); 873 spin_unlock_irqrestore(&seq->pend_q_lock, flags); 874 875 asd_ascb_free(ascb); 876 } 877 878 /* ---------- CONTROL PHY ---------- */ 879 880 /* Given the spec value, return a driver value. */ 881 static const int phy_func_table[] = { 882 [PHY_FUNC_NOP] = PHY_NO_OP, 883 [PHY_FUNC_LINK_RESET] = ENABLE_PHY, 884 [PHY_FUNC_HARD_RESET] = EXECUTE_HARD_RESET, 885 [PHY_FUNC_DISABLE] = DISABLE_PHY, 886 [PHY_FUNC_RELEASE_SPINUP_HOLD] = RELEASE_SPINUP_HOLD, 887 }; 888 889 int asd_control_phy(struct asd_sas_phy *phy, enum phy_func func, void *arg) 890 { 891 struct asd_ha_struct *asd_ha = phy->ha->lldd_ha; 892 struct asd_phy_desc *pd = asd_ha->phys[phy->id].phy_desc; 893 struct asd_ascb *ascb; 894 struct sas_phy_linkrates *rates; 895 int res = 1; 896 897 switch (func) { 898 case PHY_FUNC_CLEAR_ERROR_LOG: 899 return -ENOSYS; 900 case PHY_FUNC_SET_LINK_RATE: 901 rates = arg; 902 if (rates->minimum_linkrate) { 903 pd->min_sas_lrate = rates->minimum_linkrate; 904 pd->min_sata_lrate = rates->minimum_linkrate; 905 } 906 if (rates->maximum_linkrate) { 907 pd->max_sas_lrate = rates->maximum_linkrate; 908 pd->max_sata_lrate = rates->maximum_linkrate; 909 } 910 func = PHY_FUNC_LINK_RESET; 911 break; 912 default: 913 break; 914 } 915 916 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); 917 if (!ascb) 918 return -ENOMEM; 919 920 asd_build_control_phy(ascb, phy->id, phy_func_table[func]); 921 res = asd_post_ascb_list(asd_ha, ascb , 1); 922 if (res) 923 asd_ascb_free(ascb); 924 925 return res; 926 } 927