1 /* 2 * Aic94xx SAS/SATA driver SCB management. 3 * 4 * Copyright (C) 2005 Adaptec, Inc. All rights reserved. 5 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com> 6 * 7 * This file is licensed under GPLv2. 8 * 9 * This file is part of the aic94xx driver. 10 * 11 * The aic94xx driver is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation; version 2 of the 14 * License. 15 * 16 * The aic94xx driver is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with the aic94xx driver; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 24 * 25 */ 26 27 #include <linux/pci.h> 28 #include <scsi/scsi_host.h> 29 30 #include "aic94xx.h" 31 #include "aic94xx_reg.h" 32 #include "aic94xx_hwi.h" 33 #include "aic94xx_seq.h" 34 35 #include "aic94xx_dump.h" 36 37 /* ---------- EMPTY SCB ---------- */ 38 39 #define DL_PHY_MASK 7 40 #define BYTES_DMAED 0 41 #define PRIMITIVE_RECVD 0x08 42 #define PHY_EVENT 0x10 43 #define LINK_RESET_ERROR 0x18 44 #define TIMER_EVENT 0x20 45 #define REQ_TASK_ABORT 0xF0 46 #define REQ_DEVICE_RESET 0xF1 47 #define SIGNAL_NCQ_ERROR 0xF2 48 #define CLEAR_NCQ_ERROR 0xF3 49 50 #define PHY_EVENTS_STATUS (CURRENT_LOSS_OF_SIGNAL | CURRENT_OOB_DONE \ 51 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \ 52 | CURRENT_OOB_ERROR) 53 54 static inline void get_lrate_mode(struct asd_phy *phy, u8 oob_mode) 55 { 56 struct sas_phy *sas_phy = phy->sas_phy.phy; 57 58 switch (oob_mode & 7) { 59 case PHY_SPEED_60: 60 /* FIXME: sas transport class doesn't have this */ 61 phy->sas_phy.linkrate = SAS_LINK_RATE_6_0_GBPS; 62 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_6_0_GBPS; 63 break; 64 case PHY_SPEED_30: 65 phy->sas_phy.linkrate = SAS_LINK_RATE_3_0_GBPS; 66 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_3_0_GBPS; 67 break; 68 case PHY_SPEED_15: 69 phy->sas_phy.linkrate = SAS_LINK_RATE_1_5_GBPS; 70 phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_1_5_GBPS; 71 break; 72 } 73 sas_phy->negotiated_linkrate = phy->sas_phy.linkrate; 74 sas_phy->maximum_linkrate_hw = SAS_LINK_RATE_3_0_GBPS; 75 sas_phy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; 76 sas_phy->maximum_linkrate = phy->phy_desc->max_sas_lrate; 77 sas_phy->minimum_linkrate = phy->phy_desc->min_sas_lrate; 78 79 if (oob_mode & SAS_MODE) 80 phy->sas_phy.oob_mode = SAS_OOB_MODE; 81 else if (oob_mode & SATA_MODE) 82 phy->sas_phy.oob_mode = SATA_OOB_MODE; 83 } 84 85 static inline void asd_phy_event_tasklet(struct asd_ascb *ascb, 86 struct done_list_struct *dl) 87 { 88 struct asd_ha_struct *asd_ha = ascb->ha; 89 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha; 90 int phy_id = dl->status_block[0] & DL_PHY_MASK; 91 struct asd_phy *phy = &asd_ha->phys[phy_id]; 92 93 u8 oob_status = dl->status_block[1] & PHY_EVENTS_STATUS; 94 u8 oob_mode = dl->status_block[2]; 95 96 switch (oob_status) { 97 case CURRENT_LOSS_OF_SIGNAL: 98 /* directly attached device was removed */ 99 ASD_DPRINTK("phy%d: device unplugged\n", phy_id); 100 asd_turn_led(asd_ha, phy_id, 0); 101 sas_phy_disconnected(&phy->sas_phy); 102 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_LOSS_OF_SIGNAL); 103 break; 104 case CURRENT_OOB_DONE: 105 /* hot plugged device */ 106 asd_turn_led(asd_ha, phy_id, 1); 107 get_lrate_mode(phy, oob_mode); 108 ASD_DPRINTK("phy%d device plugged: lrate:0x%x, proto:0x%x\n", 109 phy_id, phy->sas_phy.linkrate, phy->sas_phy.iproto); 110 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_DONE); 111 break; 112 case CURRENT_SPINUP_HOLD: 113 /* hot plug SATA, no COMWAKE sent */ 114 asd_turn_led(asd_ha, phy_id, 1); 115 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_SPINUP_HOLD); 116 break; 117 case CURRENT_GTO_TIMEOUT: 118 case CURRENT_OOB_ERROR: 119 ASD_DPRINTK("phy%d error while OOB: oob status:0x%x\n", phy_id, 120 dl->status_block[1]); 121 asd_turn_led(asd_ha, phy_id, 0); 122 sas_phy_disconnected(&phy->sas_phy); 123 sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_ERROR); 124 break; 125 } 126 } 127 128 /* If phys are enabled sparsely, this will do the right thing. */ 129 static inline unsigned ord_phy(struct asd_ha_struct *asd_ha, 130 struct asd_phy *phy) 131 { 132 u8 enabled_mask = asd_ha->hw_prof.enabled_phys; 133 int i, k = 0; 134 135 for_each_phy(enabled_mask, enabled_mask, i) { 136 if (&asd_ha->phys[i] == phy) 137 return k; 138 k++; 139 } 140 return 0; 141 } 142 143 /** 144 * asd_get_attached_sas_addr -- extract/generate attached SAS address 145 * phy: pointer to asd_phy 146 * sas_addr: pointer to buffer where the SAS address is to be written 147 * 148 * This function extracts the SAS address from an IDENTIFY frame 149 * received. If OOB is SATA, then a SAS address is generated from the 150 * HA tables. 151 * 152 * LOCKING: the frame_rcvd_lock needs to be held since this parses the frame 153 * buffer. 154 */ 155 static inline void asd_get_attached_sas_addr(struct asd_phy *phy, u8 *sas_addr) 156 { 157 if (phy->sas_phy.frame_rcvd[0] == 0x34 158 && phy->sas_phy.oob_mode == SATA_OOB_MODE) { 159 struct asd_ha_struct *asd_ha = phy->sas_phy.ha->lldd_ha; 160 /* FIS device-to-host */ 161 u64 addr = be64_to_cpu(*(__be64 *)phy->phy_desc->sas_addr); 162 163 addr += asd_ha->hw_prof.sata_name_base + ord_phy(asd_ha, phy); 164 *(__be64 *)sas_addr = cpu_to_be64(addr); 165 } else { 166 struct sas_identify_frame *idframe = 167 (void *) phy->sas_phy.frame_rcvd; 168 memcpy(sas_addr, idframe->sas_addr, SAS_ADDR_SIZE); 169 } 170 } 171 172 static void asd_form_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy) 173 { 174 int i; 175 struct asd_port *free_port = NULL; 176 struct asd_port *port; 177 struct asd_sas_phy *sas_phy = &phy->sas_phy; 178 unsigned long flags; 179 180 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags); 181 if (!phy->asd_port) { 182 for (i = 0; i < ASD_MAX_PHYS; i++) { 183 port = &asd_ha->asd_ports[i]; 184 185 /* Check for wide port */ 186 if (port->num_phys > 0 && 187 memcmp(port->sas_addr, sas_phy->sas_addr, 188 SAS_ADDR_SIZE) == 0 && 189 memcmp(port->attached_sas_addr, 190 sas_phy->attached_sas_addr, 191 SAS_ADDR_SIZE) == 0) { 192 break; 193 } 194 195 /* Find a free port */ 196 if (port->num_phys == 0 && free_port == NULL) { 197 free_port = port; 198 } 199 } 200 201 /* Use a free port if this doesn't form a wide port */ 202 if (i >= ASD_MAX_PHYS) { 203 port = free_port; 204 BUG_ON(!port); 205 memcpy(port->sas_addr, sas_phy->sas_addr, 206 SAS_ADDR_SIZE); 207 memcpy(port->attached_sas_addr, 208 sas_phy->attached_sas_addr, 209 SAS_ADDR_SIZE); 210 } 211 port->num_phys++; 212 port->phy_mask |= (1U << sas_phy->id); 213 phy->asd_port = port; 214 } 215 ASD_DPRINTK("%s: updating phy_mask 0x%x for phy%d\n", 216 __FUNCTION__, phy->asd_port->phy_mask, sas_phy->id); 217 asd_update_port_links(asd_ha, phy); 218 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags); 219 } 220 221 static void asd_deform_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy) 222 { 223 struct asd_port *port = phy->asd_port; 224 struct asd_sas_phy *sas_phy = &phy->sas_phy; 225 unsigned long flags; 226 227 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags); 228 if (port) { 229 port->num_phys--; 230 port->phy_mask &= ~(1U << sas_phy->id); 231 phy->asd_port = NULL; 232 } 233 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags); 234 } 235 236 static inline void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb, 237 struct done_list_struct *dl, 238 int edb_id, int phy_id) 239 { 240 unsigned long flags; 241 int edb_el = edb_id + ascb->edb_index; 242 struct asd_dma_tok *edb = ascb->ha->seq.edb_arr[edb_el]; 243 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 244 struct sas_ha_struct *sas_ha = phy->sas_phy.ha; 245 u16 size = ((dl->status_block[3] & 7) << 8) | dl->status_block[2]; 246 247 size = min(size, (u16) sizeof(phy->frame_rcvd)); 248 249 spin_lock_irqsave(&phy->sas_phy.frame_rcvd_lock, flags); 250 memcpy(phy->sas_phy.frame_rcvd, edb->vaddr, size); 251 phy->sas_phy.frame_rcvd_size = size; 252 asd_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr); 253 spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags); 254 asd_dump_frame_rcvd(phy, dl); 255 asd_form_port(ascb->ha, phy); 256 sas_ha->notify_port_event(&phy->sas_phy, PORTE_BYTES_DMAED); 257 } 258 259 static inline void asd_link_reset_err_tasklet(struct asd_ascb *ascb, 260 struct done_list_struct *dl, 261 int phy_id) 262 { 263 struct asd_ha_struct *asd_ha = ascb->ha; 264 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha; 265 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id]; 266 struct asd_phy *phy = &asd_ha->phys[phy_id]; 267 u8 lr_error = dl->status_block[1]; 268 u8 retries_left = dl->status_block[2]; 269 270 switch (lr_error) { 271 case 0: 272 ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id); 273 break; 274 case 1: 275 ASD_DPRINTK("phy%d: Loss of signal\n", phy_id); 276 break; 277 case 2: 278 ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id); 279 break; 280 case 3: 281 ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id); 282 break; 283 default: 284 ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n", 285 phy_id, lr_error); 286 break; 287 } 288 289 asd_turn_led(asd_ha, phy_id, 0); 290 sas_phy_disconnected(sas_phy); 291 asd_deform_port(asd_ha, phy); 292 sas_ha->notify_port_event(sas_phy, PORTE_LINK_RESET_ERR); 293 294 if (retries_left == 0) { 295 int num = 1; 296 struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num, 297 GFP_ATOMIC); 298 if (!cp) { 299 asd_printk("%s: out of memory\n", __FUNCTION__); 300 goto out; 301 } 302 ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n", 303 phy_id); 304 asd_build_control_phy(cp, phy_id, ENABLE_PHY); 305 if (asd_post_ascb_list(ascb->ha, cp, 1) != 0) 306 asd_ascb_free(cp); 307 } 308 out: 309 ; 310 } 311 312 static inline void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb, 313 struct done_list_struct *dl, 314 int phy_id) 315 { 316 unsigned long flags; 317 struct sas_ha_struct *sas_ha = &ascb->ha->sas_ha; 318 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id]; 319 struct asd_ha_struct *asd_ha = ascb->ha; 320 struct asd_phy *phy = &asd_ha->phys[phy_id]; 321 u8 reg = dl->status_block[1]; 322 u32 cont = dl->status_block[2] << ((reg & 3)*8); 323 324 reg &= ~3; 325 switch (reg) { 326 case LmPRMSTAT0BYTE0: 327 switch (cont) { 328 case LmBROADCH: 329 case LmBROADRVCH0: 330 case LmBROADRVCH1: 331 case LmBROADSES: 332 ASD_DPRINTK("phy%d: BROADCAST change received:%d\n", 333 phy_id, cont); 334 spin_lock_irqsave(&sas_phy->sas_prim_lock, flags); 335 sas_phy->sas_prim = ffs(cont); 336 spin_unlock_irqrestore(&sas_phy->sas_prim_lock, flags); 337 sas_ha->notify_port_event(sas_phy,PORTE_BROADCAST_RCVD); 338 break; 339 340 case LmUNKNOWNP: 341 ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id); 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 case LmPRMSTAT1BYTE0: 351 switch (cont) { 352 case LmHARDRST: 353 ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n", 354 phy_id); 355 /* The sequencer disables all phys on that port. 356 * We have to re-enable the phys ourselves. */ 357 asd_deform_port(asd_ha, phy); 358 sas_ha->notify_port_event(sas_phy, PORTE_HARD_RESET); 359 break; 360 361 default: 362 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n", 363 phy_id, reg, cont); 364 break; 365 } 366 break; 367 default: 368 ASD_DPRINTK("unknown primitive register:0x%x\n", 369 dl->status_block[1]); 370 break; 371 } 372 } 373 374 /** 375 * asd_invalidate_edb -- invalidate an EDB and if necessary post the ESCB 376 * @ascb: pointer to Empty SCB 377 * @edb_id: index [0,6] to the empty data buffer which is to be invalidated 378 * 379 * After an EDB has been invalidated, if all EDBs in this ESCB have been 380 * invalidated, the ESCB is posted back to the sequencer. 381 * Context is tasklet/IRQ. 382 */ 383 void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id) 384 { 385 struct asd_seq_data *seq = &ascb->ha->seq; 386 struct empty_scb *escb = &ascb->scb->escb; 387 struct sg_el *eb = &escb->eb[edb_id]; 388 struct asd_dma_tok *edb = seq->edb_arr[ascb->edb_index + edb_id]; 389 390 memset(edb->vaddr, 0, ASD_EDB_SIZE); 391 eb->flags |= ELEMENT_NOT_VALID; 392 escb->num_valid--; 393 394 if (escb->num_valid == 0) { 395 int i; 396 /* ASD_DPRINTK("reposting escb: vaddr: 0x%p, " 397 "dma_handle: 0x%08llx, next: 0x%08llx, " 398 "index:%d, opcode:0x%02x\n", 399 ascb->dma_scb.vaddr, 400 (u64)ascb->dma_scb.dma_handle, 401 le64_to_cpu(ascb->scb->header.next_scb), 402 le16_to_cpu(ascb->scb->header.index), 403 ascb->scb->header.opcode); 404 */ 405 escb->num_valid = ASD_EDBS_PER_SCB; 406 for (i = 0; i < ASD_EDBS_PER_SCB; i++) 407 escb->eb[i].flags = 0; 408 if (!list_empty(&ascb->list)) 409 list_del_init(&ascb->list); 410 i = asd_post_escb_list(ascb->ha, ascb, 1); 411 if (i) 412 asd_printk("couldn't post escb, err:%d\n", i); 413 } 414 } 415 416 static void escb_tasklet_complete(struct asd_ascb *ascb, 417 struct done_list_struct *dl) 418 { 419 struct asd_ha_struct *asd_ha = ascb->ha; 420 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha; 421 int edb = (dl->opcode & DL_PHY_MASK) - 1; /* [0xc1,0xc7] -> [0,6] */ 422 u8 sb_opcode = dl->status_block[0]; 423 int phy_id = sb_opcode & DL_PHY_MASK; 424 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id]; 425 struct asd_phy *phy = &asd_ha->phys[phy_id]; 426 427 if (edb > 6 || edb < 0) { 428 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n", 429 edb, dl->opcode); 430 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n", 431 sb_opcode, phy_id); 432 ASD_DPRINTK("escb: vaddr: 0x%p, " 433 "dma_handle: 0x%llx, next: 0x%llx, " 434 "index:%d, opcode:0x%02x\n", 435 ascb->dma_scb.vaddr, 436 (unsigned long long)ascb->dma_scb.dma_handle, 437 (unsigned long long) 438 le64_to_cpu(ascb->scb->header.next_scb), 439 le16_to_cpu(ascb->scb->header.index), 440 ascb->scb->header.opcode); 441 } 442 443 /* Catch these before we mask off the sb_opcode bits */ 444 switch (sb_opcode) { 445 case REQ_TASK_ABORT: { 446 struct asd_ascb *a, *b; 447 u16 tc_abort; 448 struct domain_device *failed_dev = NULL; 449 450 ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n", 451 __FUNCTION__, dl->status_block[3]); 452 453 /* 454 * Find the task that caused the abort and abort it first. 455 * The sequencer won't put anything on the done list until 456 * that happens. 457 */ 458 tc_abort = *((u16*)(&dl->status_block[1])); 459 tc_abort = le16_to_cpu(tc_abort); 460 461 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) { 462 struct sas_task *task = ascb->uldd_task; 463 464 if (task && a->tc_index == tc_abort) { 465 failed_dev = task->dev; 466 sas_task_abort(task); 467 break; 468 } 469 } 470 471 if (!failed_dev) { 472 ASD_DPRINTK("%s: Can't find task (tc=%d) to abort!\n", 473 __FUNCTION__, tc_abort); 474 goto out; 475 } 476 477 /* 478 * Now abort everything else for that device (hba?) so 479 * that the EH will wake up and do something. 480 */ 481 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) { 482 struct sas_task *task = ascb->uldd_task; 483 484 if (task && 485 task->dev == failed_dev && 486 a->tc_index != tc_abort) 487 sas_task_abort(task); 488 } 489 490 goto out; 491 } 492 case REQ_DEVICE_RESET: { 493 struct asd_ascb *a; 494 u16 conn_handle; 495 unsigned long flags; 496 struct sas_task *last_dev_task = NULL; 497 498 conn_handle = *((u16*)(&dl->status_block[1])); 499 conn_handle = le16_to_cpu(conn_handle); 500 501 ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __FUNCTION__, 502 dl->status_block[3]); 503 504 /* Find the last pending task for the device... */ 505 list_for_each_entry(a, &asd_ha->seq.pend_q, list) { 506 u16 x; 507 struct domain_device *dev; 508 struct sas_task *task = a->uldd_task; 509 510 if (!task) 511 continue; 512 dev = task->dev; 513 514 x = (unsigned long)dev->lldd_dev; 515 if (x == conn_handle) 516 last_dev_task = task; 517 } 518 519 if (!last_dev_task) { 520 ASD_DPRINTK("%s: Device reset for idle device %d?\n", 521 __FUNCTION__, conn_handle); 522 goto out; 523 } 524 525 /* ...and set the reset flag */ 526 spin_lock_irqsave(&last_dev_task->task_state_lock, flags); 527 last_dev_task->task_state_flags |= SAS_TASK_NEED_DEV_RESET; 528 spin_unlock_irqrestore(&last_dev_task->task_state_lock, flags); 529 530 /* Kill all pending tasks for the device */ 531 list_for_each_entry(a, &asd_ha->seq.pend_q, list) { 532 u16 x; 533 struct domain_device *dev; 534 struct sas_task *task = a->uldd_task; 535 536 if (!task) 537 continue; 538 dev = task->dev; 539 540 x = (unsigned long)dev->lldd_dev; 541 if (x == conn_handle) 542 sas_task_abort(task); 543 } 544 545 goto out; 546 } 547 case SIGNAL_NCQ_ERROR: 548 ASD_DPRINTK("%s: SIGNAL_NCQ_ERROR\n", __FUNCTION__); 549 goto out; 550 case CLEAR_NCQ_ERROR: 551 ASD_DPRINTK("%s: CLEAR_NCQ_ERROR\n", __FUNCTION__); 552 goto out; 553 } 554 555 sb_opcode &= ~DL_PHY_MASK; 556 557 switch (sb_opcode) { 558 case BYTES_DMAED: 559 ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __FUNCTION__, phy_id); 560 asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id); 561 break; 562 case PRIMITIVE_RECVD: 563 ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __FUNCTION__, 564 phy_id); 565 asd_primitive_rcvd_tasklet(ascb, dl, phy_id); 566 break; 567 case PHY_EVENT: 568 ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __FUNCTION__, phy_id); 569 asd_phy_event_tasklet(ascb, dl); 570 break; 571 case LINK_RESET_ERROR: 572 ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __FUNCTION__, 573 phy_id); 574 asd_link_reset_err_tasklet(ascb, dl, phy_id); 575 break; 576 case TIMER_EVENT: 577 ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n", 578 __FUNCTION__, phy_id); 579 asd_turn_led(asd_ha, phy_id, 0); 580 /* the device is gone */ 581 sas_phy_disconnected(sas_phy); 582 asd_deform_port(asd_ha, phy); 583 sas_ha->notify_port_event(sas_phy, PORTE_TIMER_EVENT); 584 break; 585 default: 586 ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __FUNCTION__, 587 phy_id, sb_opcode); 588 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n", 589 edb, dl->opcode); 590 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n", 591 sb_opcode, phy_id); 592 ASD_DPRINTK("escb: vaddr: 0x%p, " 593 "dma_handle: 0x%llx, next: 0x%llx, " 594 "index:%d, opcode:0x%02x\n", 595 ascb->dma_scb.vaddr, 596 (unsigned long long)ascb->dma_scb.dma_handle, 597 (unsigned long long) 598 le64_to_cpu(ascb->scb->header.next_scb), 599 le16_to_cpu(ascb->scb->header.index), 600 ascb->scb->header.opcode); 601 602 break; 603 } 604 out: 605 asd_invalidate_edb(ascb, edb); 606 } 607 608 int asd_init_post_escbs(struct asd_ha_struct *asd_ha) 609 { 610 struct asd_seq_data *seq = &asd_ha->seq; 611 int i; 612 613 for (i = 0; i < seq->num_escbs; i++) 614 seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete; 615 616 ASD_DPRINTK("posting %d escbs\n", i); 617 return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs); 618 } 619 620 /* ---------- CONTROL PHY ---------- */ 621 622 #define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \ 623 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \ 624 | CURRENT_OOB_ERROR) 625 626 /** 627 * control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb 628 * @ascb: pointer to an ascb 629 * @dl: pointer to the done list entry 630 * 631 * This function completes a CONTROL PHY scb and frees the ascb. 632 * A note on LEDs: 633 * - an LED blinks if there is IO though it, 634 * - if a device is connected to the LED, it is lit, 635 * - if no device is connected to the LED, is is dimmed (off). 636 */ 637 static void control_phy_tasklet_complete(struct asd_ascb *ascb, 638 struct done_list_struct *dl) 639 { 640 struct asd_ha_struct *asd_ha = ascb->ha; 641 struct scb *scb = ascb->scb; 642 struct control_phy *control_phy = &scb->control_phy; 643 u8 phy_id = control_phy->phy_id; 644 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 645 646 u8 status = dl->status_block[0]; 647 u8 oob_status = dl->status_block[1]; 648 u8 oob_mode = dl->status_block[2]; 649 /* u8 oob_signals= dl->status_block[3]; */ 650 651 if (status != 0) { 652 ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n", 653 __FUNCTION__, phy_id, status); 654 goto out; 655 } 656 657 switch (control_phy->sub_func) { 658 case DISABLE_PHY: 659 asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id); 660 asd_turn_led(asd_ha, phy_id, 0); 661 asd_control_led(asd_ha, phy_id, 0); 662 ASD_DPRINTK("%s: disable phy%d\n", __FUNCTION__, phy_id); 663 break; 664 665 case ENABLE_PHY: 666 asd_control_led(asd_ha, phy_id, 1); 667 if (oob_status & CURRENT_OOB_DONE) { 668 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 669 get_lrate_mode(phy, oob_mode); 670 asd_turn_led(asd_ha, phy_id, 1); 671 ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n", 672 __FUNCTION__, phy_id,phy->sas_phy.linkrate, 673 phy->sas_phy.iproto); 674 } else if (oob_status & CURRENT_SPINUP_HOLD) { 675 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 676 asd_turn_led(asd_ha, phy_id, 1); 677 ASD_DPRINTK("%s: phy%d, spinup hold\n", __FUNCTION__, 678 phy_id); 679 } else if (oob_status & CURRENT_ERR_MASK) { 680 asd_turn_led(asd_ha, phy_id, 0); 681 ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n", 682 __FUNCTION__, phy_id, oob_status); 683 } else if (oob_status & (CURRENT_HOT_PLUG_CNCT 684 | CURRENT_DEVICE_PRESENT)) { 685 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 686 asd_turn_led(asd_ha, phy_id, 1); 687 ASD_DPRINTK("%s: phy%d: hot plug or device present\n", 688 __FUNCTION__, phy_id); 689 } else { 690 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 691 asd_turn_led(asd_ha, phy_id, 0); 692 ASD_DPRINTK("%s: phy%d: no device present: " 693 "oob_status:0x%x\n", 694 __FUNCTION__, phy_id, oob_status); 695 } 696 break; 697 case RELEASE_SPINUP_HOLD: 698 case PHY_NO_OP: 699 case EXECUTE_HARD_RESET: 700 ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __FUNCTION__, 701 phy_id, control_phy->sub_func); 702 /* XXX finish */ 703 break; 704 default: 705 ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __FUNCTION__, 706 phy_id, control_phy->sub_func); 707 break; 708 } 709 out: 710 asd_ascb_free(ascb); 711 } 712 713 static inline void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd) 714 { 715 /* disable all speeds, then enable defaults */ 716 *speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS 717 | SATA_SPEED_30_DIS | SATA_SPEED_15_DIS; 718 719 switch (pd->max_sas_lrate) { 720 case SAS_LINK_RATE_6_0_GBPS: 721 *speed_mask &= ~SAS_SPEED_60_DIS; 722 default: 723 case SAS_LINK_RATE_3_0_GBPS: 724 *speed_mask &= ~SAS_SPEED_30_DIS; 725 case SAS_LINK_RATE_1_5_GBPS: 726 *speed_mask &= ~SAS_SPEED_15_DIS; 727 } 728 729 switch (pd->min_sas_lrate) { 730 case SAS_LINK_RATE_6_0_GBPS: 731 *speed_mask |= SAS_SPEED_30_DIS; 732 case SAS_LINK_RATE_3_0_GBPS: 733 *speed_mask |= SAS_SPEED_15_DIS; 734 default: 735 case SAS_LINK_RATE_1_5_GBPS: 736 /* nothing to do */ 737 ; 738 } 739 740 switch (pd->max_sata_lrate) { 741 case SAS_LINK_RATE_3_0_GBPS: 742 *speed_mask &= ~SATA_SPEED_30_DIS; 743 default: 744 case SAS_LINK_RATE_1_5_GBPS: 745 *speed_mask &= ~SATA_SPEED_15_DIS; 746 } 747 748 switch (pd->min_sata_lrate) { 749 case SAS_LINK_RATE_3_0_GBPS: 750 *speed_mask |= SATA_SPEED_15_DIS; 751 default: 752 case SAS_LINK_RATE_1_5_GBPS: 753 /* nothing to do */ 754 ; 755 } 756 } 757 758 /** 759 * asd_build_control_phy -- build a CONTROL PHY SCB 760 * @ascb: pointer to an ascb 761 * @phy_id: phy id to control, integer 762 * @subfunc: subfunction, what to actually to do the phy 763 * 764 * This function builds a CONTROL PHY scb. No allocation of any kind 765 * is performed. @ascb is allocated with the list function. 766 * The caller can override the ascb->tasklet_complete to point 767 * to its own callback function. It must call asd_ascb_free() 768 * at its tasklet complete function. 769 * See the default implementation. 770 */ 771 void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc) 772 { 773 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 774 struct scb *scb = ascb->scb; 775 struct control_phy *control_phy = &scb->control_phy; 776 777 scb->header.opcode = CONTROL_PHY; 778 control_phy->phy_id = (u8) phy_id; 779 control_phy->sub_func = subfunc; 780 781 switch (subfunc) { 782 case EXECUTE_HARD_RESET: /* 0x81 */ 783 case ENABLE_PHY: /* 0x01 */ 784 /* decide hot plug delay */ 785 control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT; 786 787 /* decide speed mask */ 788 set_speed_mask(&control_phy->speed_mask, phy->phy_desc); 789 790 /* initiator port settings are in the hi nibble */ 791 if (phy->sas_phy.role == PHY_ROLE_INITIATOR) 792 control_phy->port_type = SAS_PROTO_ALL << 4; 793 else if (phy->sas_phy.role == PHY_ROLE_TARGET) 794 control_phy->port_type = SAS_PROTO_ALL; 795 else 796 control_phy->port_type = 797 (SAS_PROTO_ALL << 4) | SAS_PROTO_ALL; 798 799 /* link reset retries, this should be nominal */ 800 control_phy->link_reset_retries = 10; 801 802 case RELEASE_SPINUP_HOLD: /* 0x02 */ 803 /* decide the func_mask */ 804 control_phy->func_mask = FUNCTION_MASK_DEFAULT; 805 if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD) 806 control_phy->func_mask &= ~SPINUP_HOLD_DIS; 807 else 808 control_phy->func_mask |= SPINUP_HOLD_DIS; 809 } 810 811 control_phy->conn_handle = cpu_to_le16(0xFFFF); 812 813 ascb->tasklet_complete = control_phy_tasklet_complete; 814 } 815 816 /* ---------- INITIATE LINK ADM TASK ---------- */ 817 818 static void link_adm_tasklet_complete(struct asd_ascb *ascb, 819 struct done_list_struct *dl) 820 { 821 u8 opcode = dl->opcode; 822 struct initiate_link_adm *link_adm = &ascb->scb->link_adm; 823 u8 phy_id = link_adm->phy_id; 824 825 if (opcode != TC_NO_ERROR) { 826 asd_printk("phy%d: link adm task 0x%x completed with error " 827 "0x%x\n", phy_id, link_adm->sub_func, opcode); 828 } 829 ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n", 830 phy_id, link_adm->sub_func, opcode); 831 832 asd_ascb_free(ascb); 833 } 834 835 void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id, 836 u8 subfunc) 837 { 838 struct scb *scb = ascb->scb; 839 struct initiate_link_adm *link_adm = &scb->link_adm; 840 841 scb->header.opcode = INITIATE_LINK_ADM_TASK; 842 843 link_adm->phy_id = phy_id; 844 link_adm->sub_func = subfunc; 845 link_adm->conn_handle = cpu_to_le16(0xFFFF); 846 847 ascb->tasklet_complete = link_adm_tasklet_complete; 848 } 849 850 /* ---------- SCB timer ---------- */ 851 852 /** 853 * asd_ascb_timedout -- called when a pending SCB's timer has expired 854 * @data: unsigned long, a pointer to the ascb in question 855 * 856 * This is the default timeout function which does the most necessary. 857 * Upper layers can implement their own timeout function, say to free 858 * resources they have with this SCB, and then call this one at the 859 * end of their timeout function. To do this, one should initialize 860 * the ascb->timer.{function, data, expires} prior to calling the post 861 * funcion. The timer is started by the post function. 862 */ 863 void asd_ascb_timedout(unsigned long data) 864 { 865 struct asd_ascb *ascb = (void *) data; 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. */ 882 static 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 }; 889 890 int 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 return -ENOSYS; 901 case PHY_FUNC_SET_LINK_RATE: 902 rates = arg; 903 if (rates->minimum_linkrate) { 904 pd->min_sas_lrate = rates->minimum_linkrate; 905 pd->min_sata_lrate = rates->minimum_linkrate; 906 } 907 if (rates->maximum_linkrate) { 908 pd->max_sas_lrate = rates->maximum_linkrate; 909 pd->max_sata_lrate = rates->maximum_linkrate; 910 } 911 func = PHY_FUNC_LINK_RESET; 912 break; 913 default: 914 break; 915 } 916 917 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); 918 if (!ascb) 919 return -ENOMEM; 920 921 asd_build_control_phy(ascb, phy->id, phy_func_table[func]); 922 res = asd_post_ascb_list(asd_ha, ascb , 1); 923 if (res) 924 asd_ascb_free(ascb); 925 926 return res; 927 } 928