aic94xx_scb.c revision 81e56ded878aeb8730f18c1d0a70d5face788be3
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 53static 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 84static 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. */ 128static unsigned ord_phy(struct asd_ha_struct *asd_ha, struct asd_phy *phy) 129{ 130 u8 enabled_mask = asd_ha->hw_prof.enabled_phys; 131 int i, k = 0; 132 133 for_each_phy(enabled_mask, enabled_mask, i) { 134 if (&asd_ha->phys[i] == phy) 135 return k; 136 k++; 137 } 138 return 0; 139} 140 141/** 142 * asd_get_attached_sas_addr -- extract/generate attached SAS address 143 * phy: pointer to asd_phy 144 * sas_addr: pointer to buffer where the SAS address is to be written 145 * 146 * This function extracts the SAS address from an IDENTIFY frame 147 * received. If OOB is SATA, then a SAS address is generated from the 148 * HA tables. 149 * 150 * LOCKING: the frame_rcvd_lock needs to be held since this parses the frame 151 * buffer. 152 */ 153static void asd_get_attached_sas_addr(struct asd_phy *phy, u8 *sas_addr) 154{ 155 if (phy->sas_phy.frame_rcvd[0] == 0x34 156 && phy->sas_phy.oob_mode == SATA_OOB_MODE) { 157 struct asd_ha_struct *asd_ha = phy->sas_phy.ha->lldd_ha; 158 /* FIS device-to-host */ 159 u64 addr = be64_to_cpu(*(__be64 *)phy->phy_desc->sas_addr); 160 161 addr += asd_ha->hw_prof.sata_name_base + ord_phy(asd_ha, phy); 162 *(__be64 *)sas_addr = cpu_to_be64(addr); 163 } else { 164 struct sas_identify_frame *idframe = 165 (void *) phy->sas_phy.frame_rcvd; 166 memcpy(sas_addr, idframe->sas_addr, SAS_ADDR_SIZE); 167 } 168} 169 170static void asd_form_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy) 171{ 172 int i; 173 struct asd_port *free_port = NULL; 174 struct asd_port *port; 175 struct asd_sas_phy *sas_phy = &phy->sas_phy; 176 unsigned long flags; 177 178 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags); 179 if (!phy->asd_port) { 180 for (i = 0; i < ASD_MAX_PHYS; i++) { 181 port = &asd_ha->asd_ports[i]; 182 183 /* Check for wide port */ 184 if (port->num_phys > 0 && 185 memcmp(port->sas_addr, sas_phy->sas_addr, 186 SAS_ADDR_SIZE) == 0 && 187 memcmp(port->attached_sas_addr, 188 sas_phy->attached_sas_addr, 189 SAS_ADDR_SIZE) == 0) { 190 break; 191 } 192 193 /* Find a free port */ 194 if (port->num_phys == 0 && free_port == NULL) { 195 free_port = port; 196 } 197 } 198 199 /* Use a free port if this doesn't form a wide port */ 200 if (i >= ASD_MAX_PHYS) { 201 port = free_port; 202 BUG_ON(!port); 203 memcpy(port->sas_addr, sas_phy->sas_addr, 204 SAS_ADDR_SIZE); 205 memcpy(port->attached_sas_addr, 206 sas_phy->attached_sas_addr, 207 SAS_ADDR_SIZE); 208 } 209 port->num_phys++; 210 port->phy_mask |= (1U << sas_phy->id); 211 phy->asd_port = port; 212 } 213 ASD_DPRINTK("%s: updating phy_mask 0x%x for phy%d\n", 214 __FUNCTION__, phy->asd_port->phy_mask, sas_phy->id); 215 asd_update_port_links(asd_ha, phy); 216 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags); 217} 218 219static void asd_deform_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy) 220{ 221 struct asd_port *port = phy->asd_port; 222 struct asd_sas_phy *sas_phy = &phy->sas_phy; 223 unsigned long flags; 224 225 spin_lock_irqsave(&asd_ha->asd_ports_lock, flags); 226 if (port) { 227 port->num_phys--; 228 port->phy_mask &= ~(1U << sas_phy->id); 229 phy->asd_port = NULL; 230 } 231 spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags); 232} 233 234static void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb, 235 struct done_list_struct *dl, 236 int edb_id, int phy_id) 237{ 238 unsigned long flags; 239 int edb_el = edb_id + ascb->edb_index; 240 struct asd_dma_tok *edb = ascb->ha->seq.edb_arr[edb_el]; 241 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 242 struct sas_ha_struct *sas_ha = phy->sas_phy.ha; 243 u16 size = ((dl->status_block[3] & 7) << 8) | dl->status_block[2]; 244 245 size = min(size, (u16) sizeof(phy->frame_rcvd)); 246 247 spin_lock_irqsave(&phy->sas_phy.frame_rcvd_lock, flags); 248 memcpy(phy->sas_phy.frame_rcvd, edb->vaddr, size); 249 phy->sas_phy.frame_rcvd_size = size; 250 asd_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr); 251 spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags); 252 asd_dump_frame_rcvd(phy, dl); 253 asd_form_port(ascb->ha, phy); 254 sas_ha->notify_port_event(&phy->sas_phy, PORTE_BYTES_DMAED); 255} 256 257static void asd_link_reset_err_tasklet(struct asd_ascb *ascb, 258 struct done_list_struct *dl, 259 int phy_id) 260{ 261 struct asd_ha_struct *asd_ha = ascb->ha; 262 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha; 263 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id]; 264 struct asd_phy *phy = &asd_ha->phys[phy_id]; 265 u8 lr_error = dl->status_block[1]; 266 u8 retries_left = dl->status_block[2]; 267 268 switch (lr_error) { 269 case 0: 270 ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id); 271 break; 272 case 1: 273 ASD_DPRINTK("phy%d: Loss of signal\n", phy_id); 274 break; 275 case 2: 276 ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id); 277 break; 278 case 3: 279 ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id); 280 break; 281 default: 282 ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n", 283 phy_id, lr_error); 284 break; 285 } 286 287 asd_turn_led(asd_ha, phy_id, 0); 288 sas_phy_disconnected(sas_phy); 289 asd_deform_port(asd_ha, phy); 290 sas_ha->notify_port_event(sas_phy, PORTE_LINK_RESET_ERR); 291 292 if (retries_left == 0) { 293 int num = 1; 294 struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num, 295 GFP_ATOMIC); 296 if (!cp) { 297 asd_printk("%s: out of memory\n", __FUNCTION__); 298 goto out; 299 } 300 ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n", 301 phy_id); 302 asd_build_control_phy(cp, phy_id, ENABLE_PHY); 303 if (asd_post_ascb_list(ascb->ha, cp, 1) != 0) 304 asd_ascb_free(cp); 305 } 306out: 307 ; 308} 309 310static void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb, 311 struct done_list_struct *dl, 312 int phy_id) 313{ 314 unsigned long flags; 315 struct sas_ha_struct *sas_ha = &ascb->ha->sas_ha; 316 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id]; 317 struct asd_ha_struct *asd_ha = ascb->ha; 318 struct asd_phy *phy = &asd_ha->phys[phy_id]; 319 u8 reg = dl->status_block[1]; 320 u32 cont = dl->status_block[2] << ((reg & 3)*8); 321 322 reg &= ~3; 323 switch (reg) { 324 case LmPRMSTAT0BYTE0: 325 switch (cont) { 326 case LmBROADCH: 327 case LmBROADRVCH0: 328 case LmBROADRVCH1: 329 case LmBROADSES: 330 ASD_DPRINTK("phy%d: BROADCAST change received:%d\n", 331 phy_id, cont); 332 spin_lock_irqsave(&sas_phy->sas_prim_lock, flags); 333 sas_phy->sas_prim = ffs(cont); 334 spin_unlock_irqrestore(&sas_phy->sas_prim_lock, flags); 335 sas_ha->notify_port_event(sas_phy,PORTE_BROADCAST_RCVD); 336 break; 337 338 case LmUNKNOWNP: 339 ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id); 340 break; 341 342 default: 343 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n", 344 phy_id, reg, cont); 345 break; 346 } 347 break; 348 case LmPRMSTAT1BYTE0: 349 switch (cont) { 350 case LmHARDRST: 351 ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n", 352 phy_id); 353 /* The sequencer disables all phys on that port. 354 * We have to re-enable the phys ourselves. */ 355 asd_deform_port(asd_ha, phy); 356 sas_ha->notify_port_event(sas_phy, PORTE_HARD_RESET); 357 break; 358 359 default: 360 ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n", 361 phy_id, reg, cont); 362 break; 363 } 364 break; 365 default: 366 ASD_DPRINTK("unknown primitive register:0x%x\n", 367 dl->status_block[1]); 368 break; 369 } 370} 371 372/** 373 * asd_invalidate_edb -- invalidate an EDB and if necessary post the ESCB 374 * @ascb: pointer to Empty SCB 375 * @edb_id: index [0,6] to the empty data buffer which is to be invalidated 376 * 377 * After an EDB has been invalidated, if all EDBs in this ESCB have been 378 * invalidated, the ESCB is posted back to the sequencer. 379 * Context is tasklet/IRQ. 380 */ 381void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id) 382{ 383 struct asd_seq_data *seq = &ascb->ha->seq; 384 struct empty_scb *escb = &ascb->scb->escb; 385 struct sg_el *eb = &escb->eb[edb_id]; 386 struct asd_dma_tok *edb = seq->edb_arr[ascb->edb_index + edb_id]; 387 388 memset(edb->vaddr, 0, ASD_EDB_SIZE); 389 eb->flags |= ELEMENT_NOT_VALID; 390 escb->num_valid--; 391 392 if (escb->num_valid == 0) { 393 int i; 394 /* ASD_DPRINTK("reposting escb: vaddr: 0x%p, " 395 "dma_handle: 0x%08llx, next: 0x%08llx, " 396 "index:%d, opcode:0x%02x\n", 397 ascb->dma_scb.vaddr, 398 (u64)ascb->dma_scb.dma_handle, 399 le64_to_cpu(ascb->scb->header.next_scb), 400 le16_to_cpu(ascb->scb->header.index), 401 ascb->scb->header.opcode); 402 */ 403 escb->num_valid = ASD_EDBS_PER_SCB; 404 for (i = 0; i < ASD_EDBS_PER_SCB; i++) 405 escb->eb[i].flags = 0; 406 if (!list_empty(&ascb->list)) 407 list_del_init(&ascb->list); 408 i = asd_post_escb_list(ascb->ha, ascb, 1); 409 if (i) 410 asd_printk("couldn't post escb, err:%d\n", i); 411 } 412} 413 414static void escb_tasklet_complete(struct asd_ascb *ascb, 415 struct done_list_struct *dl) 416{ 417 struct asd_ha_struct *asd_ha = ascb->ha; 418 struct sas_ha_struct *sas_ha = &asd_ha->sas_ha; 419 int edb = (dl->opcode & DL_PHY_MASK) - 1; /* [0xc1,0xc7] -> [0,6] */ 420 u8 sb_opcode = dl->status_block[0]; 421 int phy_id = sb_opcode & DL_PHY_MASK; 422 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id]; 423 struct asd_phy *phy = &asd_ha->phys[phy_id]; 424 425 if (edb > 6 || edb < 0) { 426 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n", 427 edb, dl->opcode); 428 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n", 429 sb_opcode, phy_id); 430 ASD_DPRINTK("escb: vaddr: 0x%p, " 431 "dma_handle: 0x%llx, next: 0x%llx, " 432 "index:%d, opcode:0x%02x\n", 433 ascb->dma_scb.vaddr, 434 (unsigned long long)ascb->dma_scb.dma_handle, 435 (unsigned long long) 436 le64_to_cpu(ascb->scb->header.next_scb), 437 le16_to_cpu(ascb->scb->header.index), 438 ascb->scb->header.opcode); 439 } 440 441 /* Catch these before we mask off the sb_opcode bits */ 442 switch (sb_opcode) { 443 case REQ_TASK_ABORT: { 444 struct asd_ascb *a, *b; 445 u16 tc_abort; 446 struct domain_device *failed_dev = NULL; 447 448 ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n", 449 __FUNCTION__, dl->status_block[3]); 450 451 /* 452 * Find the task that caused the abort and abort it first. 453 * The sequencer won't put anything on the done list until 454 * that happens. 455 */ 456 tc_abort = *((u16*)(&dl->status_block[1])); 457 tc_abort = le16_to_cpu(tc_abort); 458 459 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) { 460 struct sas_task *task = a->uldd_task; 461 462 if (a->tc_index != tc_abort) 463 continue; 464 465 if (task) { 466 failed_dev = task->dev; 467 sas_task_abort(task); 468 } else { 469 ASD_DPRINTK("R_T_A for non TASK scb 0x%x\n", 470 a->scb->header.opcode); 471 } 472 break; 473 } 474 475 if (!failed_dev) { 476 ASD_DPRINTK("%s: Can't find task (tc=%d) to abort!\n", 477 __FUNCTION__, tc_abort); 478 goto out; 479 } 480 481 /* 482 * Now abort everything else for that device (hba?) so 483 * that the EH will wake up and do something. 484 */ 485 list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) { 486 struct sas_task *task = a->uldd_task; 487 488 if (task && 489 task->dev == failed_dev && 490 a->tc_index != tc_abort) 491 sas_task_abort(task); 492 } 493 494 goto out; 495 } 496 case REQ_DEVICE_RESET: { 497 struct asd_ascb *a; 498 u16 conn_handle; 499 unsigned long flags; 500 struct sas_task *last_dev_task = NULL; 501 502 conn_handle = *((u16*)(&dl->status_block[1])); 503 conn_handle = le16_to_cpu(conn_handle); 504 505 ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __FUNCTION__, 506 dl->status_block[3]); 507 508 /* Find the last pending task for the device... */ 509 list_for_each_entry(a, &asd_ha->seq.pend_q, list) { 510 u16 x; 511 struct domain_device *dev; 512 struct sas_task *task = a->uldd_task; 513 514 if (!task) 515 continue; 516 dev = task->dev; 517 518 x = (unsigned long)dev->lldd_dev; 519 if (x == conn_handle) 520 last_dev_task = task; 521 } 522 523 if (!last_dev_task) { 524 ASD_DPRINTK("%s: Device reset for idle device %d?\n", 525 __FUNCTION__, conn_handle); 526 goto out; 527 } 528 529 /* ...and set the reset flag */ 530 spin_lock_irqsave(&last_dev_task->task_state_lock, flags); 531 last_dev_task->task_state_flags |= SAS_TASK_NEED_DEV_RESET; 532 spin_unlock_irqrestore(&last_dev_task->task_state_lock, flags); 533 534 /* Kill all pending tasks for the device */ 535 list_for_each_entry(a, &asd_ha->seq.pend_q, list) { 536 u16 x; 537 struct domain_device *dev; 538 struct sas_task *task = a->uldd_task; 539 540 if (!task) 541 continue; 542 dev = task->dev; 543 544 x = (unsigned long)dev->lldd_dev; 545 if (x == conn_handle) 546 sas_task_abort(task); 547 } 548 549 goto out; 550 } 551 case SIGNAL_NCQ_ERROR: 552 ASD_DPRINTK("%s: SIGNAL_NCQ_ERROR\n", __FUNCTION__); 553 goto out; 554 case CLEAR_NCQ_ERROR: 555 ASD_DPRINTK("%s: CLEAR_NCQ_ERROR\n", __FUNCTION__); 556 goto out; 557 } 558 559 sb_opcode &= ~DL_PHY_MASK; 560 561 switch (sb_opcode) { 562 case BYTES_DMAED: 563 ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __FUNCTION__, phy_id); 564 asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id); 565 break; 566 case PRIMITIVE_RECVD: 567 ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __FUNCTION__, 568 phy_id); 569 asd_primitive_rcvd_tasklet(ascb, dl, phy_id); 570 break; 571 case PHY_EVENT: 572 ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __FUNCTION__, phy_id); 573 asd_phy_event_tasklet(ascb, dl); 574 break; 575 case LINK_RESET_ERROR: 576 ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __FUNCTION__, 577 phy_id); 578 asd_link_reset_err_tasklet(ascb, dl, phy_id); 579 break; 580 case TIMER_EVENT: 581 ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n", 582 __FUNCTION__, phy_id); 583 asd_turn_led(asd_ha, phy_id, 0); 584 /* the device is gone */ 585 sas_phy_disconnected(sas_phy); 586 asd_deform_port(asd_ha, phy); 587 sas_ha->notify_port_event(sas_phy, PORTE_TIMER_EVENT); 588 break; 589 default: 590 ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __FUNCTION__, 591 phy_id, sb_opcode); 592 ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n", 593 edb, dl->opcode); 594 ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n", 595 sb_opcode, phy_id); 596 ASD_DPRINTK("escb: vaddr: 0x%p, " 597 "dma_handle: 0x%llx, next: 0x%llx, " 598 "index:%d, opcode:0x%02x\n", 599 ascb->dma_scb.vaddr, 600 (unsigned long long)ascb->dma_scb.dma_handle, 601 (unsigned long long) 602 le64_to_cpu(ascb->scb->header.next_scb), 603 le16_to_cpu(ascb->scb->header.index), 604 ascb->scb->header.opcode); 605 606 break; 607 } 608out: 609 asd_invalidate_edb(ascb, edb); 610} 611 612int asd_init_post_escbs(struct asd_ha_struct *asd_ha) 613{ 614 struct asd_seq_data *seq = &asd_ha->seq; 615 int i; 616 617 for (i = 0; i < seq->num_escbs; i++) 618 seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete; 619 620 ASD_DPRINTK("posting %d escbs\n", i); 621 return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs); 622} 623 624/* ---------- CONTROL PHY ---------- */ 625 626#define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \ 627 | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \ 628 | CURRENT_OOB_ERROR) 629 630/** 631 * control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb 632 * @ascb: pointer to an ascb 633 * @dl: pointer to the done list entry 634 * 635 * This function completes a CONTROL PHY scb and frees the ascb. 636 * A note on LEDs: 637 * - an LED blinks if there is IO though it, 638 * - if a device is connected to the LED, it is lit, 639 * - if no device is connected to the LED, is is dimmed (off). 640 */ 641static void control_phy_tasklet_complete(struct asd_ascb *ascb, 642 struct done_list_struct *dl) 643{ 644 struct asd_ha_struct *asd_ha = ascb->ha; 645 struct scb *scb = ascb->scb; 646 struct control_phy *control_phy = &scb->control_phy; 647 u8 phy_id = control_phy->phy_id; 648 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 649 650 u8 status = dl->status_block[0]; 651 u8 oob_status = dl->status_block[1]; 652 u8 oob_mode = dl->status_block[2]; 653 /* u8 oob_signals= dl->status_block[3]; */ 654 655 if (status != 0) { 656 ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n", 657 __FUNCTION__, phy_id, status); 658 goto out; 659 } 660 661 switch (control_phy->sub_func) { 662 case DISABLE_PHY: 663 asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id); 664 asd_turn_led(asd_ha, phy_id, 0); 665 asd_control_led(asd_ha, phy_id, 0); 666 ASD_DPRINTK("%s: disable phy%d\n", __FUNCTION__, phy_id); 667 break; 668 669 case ENABLE_PHY: 670 asd_control_led(asd_ha, phy_id, 1); 671 if (oob_status & CURRENT_OOB_DONE) { 672 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 673 get_lrate_mode(phy, oob_mode); 674 asd_turn_led(asd_ha, phy_id, 1); 675 ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n", 676 __FUNCTION__, phy_id,phy->sas_phy.linkrate, 677 phy->sas_phy.iproto); 678 } else if (oob_status & CURRENT_SPINUP_HOLD) { 679 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 680 asd_turn_led(asd_ha, phy_id, 1); 681 ASD_DPRINTK("%s: phy%d, spinup hold\n", __FUNCTION__, 682 phy_id); 683 } else if (oob_status & CURRENT_ERR_MASK) { 684 asd_turn_led(asd_ha, phy_id, 0); 685 ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n", 686 __FUNCTION__, phy_id, oob_status); 687 } else if (oob_status & (CURRENT_HOT_PLUG_CNCT 688 | CURRENT_DEVICE_PRESENT)) { 689 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 690 asd_turn_led(asd_ha, phy_id, 1); 691 ASD_DPRINTK("%s: phy%d: hot plug or device present\n", 692 __FUNCTION__, phy_id); 693 } else { 694 asd_ha->hw_prof.enabled_phys |= (1 << phy_id); 695 asd_turn_led(asd_ha, phy_id, 0); 696 ASD_DPRINTK("%s: phy%d: no device present: " 697 "oob_status:0x%x\n", 698 __FUNCTION__, phy_id, oob_status); 699 } 700 break; 701 case RELEASE_SPINUP_HOLD: 702 case PHY_NO_OP: 703 case EXECUTE_HARD_RESET: 704 ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __FUNCTION__, 705 phy_id, control_phy->sub_func); 706 /* XXX finish */ 707 break; 708 default: 709 ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __FUNCTION__, 710 phy_id, control_phy->sub_func); 711 break; 712 } 713out: 714 asd_ascb_free(ascb); 715} 716 717static void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd) 718{ 719 /* disable all speeds, then enable defaults */ 720 *speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS 721 | SATA_SPEED_30_DIS | SATA_SPEED_15_DIS; 722 723 switch (pd->max_sas_lrate) { 724 case SAS_LINK_RATE_6_0_GBPS: 725 *speed_mask &= ~SAS_SPEED_60_DIS; 726 default: 727 case SAS_LINK_RATE_3_0_GBPS: 728 *speed_mask &= ~SAS_SPEED_30_DIS; 729 case SAS_LINK_RATE_1_5_GBPS: 730 *speed_mask &= ~SAS_SPEED_15_DIS; 731 } 732 733 switch (pd->min_sas_lrate) { 734 case SAS_LINK_RATE_6_0_GBPS: 735 *speed_mask |= SAS_SPEED_30_DIS; 736 case SAS_LINK_RATE_3_0_GBPS: 737 *speed_mask |= SAS_SPEED_15_DIS; 738 default: 739 case SAS_LINK_RATE_1_5_GBPS: 740 /* nothing to do */ 741 ; 742 } 743 744 switch (pd->max_sata_lrate) { 745 case SAS_LINK_RATE_3_0_GBPS: 746 *speed_mask &= ~SATA_SPEED_30_DIS; 747 default: 748 case SAS_LINK_RATE_1_5_GBPS: 749 *speed_mask &= ~SATA_SPEED_15_DIS; 750 } 751 752 switch (pd->min_sata_lrate) { 753 case SAS_LINK_RATE_3_0_GBPS: 754 *speed_mask |= SATA_SPEED_15_DIS; 755 default: 756 case SAS_LINK_RATE_1_5_GBPS: 757 /* nothing to do */ 758 ; 759 } 760} 761 762/** 763 * asd_build_control_phy -- build a CONTROL PHY SCB 764 * @ascb: pointer to an ascb 765 * @phy_id: phy id to control, integer 766 * @subfunc: subfunction, what to actually to do the phy 767 * 768 * This function builds a CONTROL PHY scb. No allocation of any kind 769 * is performed. @ascb is allocated with the list function. 770 * The caller can override the ascb->tasklet_complete to point 771 * to its own callback function. It must call asd_ascb_free() 772 * at its tasklet complete function. 773 * See the default implementation. 774 */ 775void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc) 776{ 777 struct asd_phy *phy = &ascb->ha->phys[phy_id]; 778 struct scb *scb = ascb->scb; 779 struct control_phy *control_phy = &scb->control_phy; 780 781 scb->header.opcode = CONTROL_PHY; 782 control_phy->phy_id = (u8) phy_id; 783 control_phy->sub_func = subfunc; 784 785 switch (subfunc) { 786 case EXECUTE_HARD_RESET: /* 0x81 */ 787 case ENABLE_PHY: /* 0x01 */ 788 /* decide hot plug delay */ 789 control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT; 790 791 /* decide speed mask */ 792 set_speed_mask(&control_phy->speed_mask, phy->phy_desc); 793 794 /* initiator port settings are in the hi nibble */ 795 if (phy->sas_phy.role == PHY_ROLE_INITIATOR) 796 control_phy->port_type = SAS_PROTOCOL_ALL << 4; 797 else if (phy->sas_phy.role == PHY_ROLE_TARGET) 798 control_phy->port_type = SAS_PROTOCOL_ALL; 799 else 800 control_phy->port_type = 801 (SAS_PROTOCOL_ALL << 4) | SAS_PROTOCOL_ALL; 802 803 /* link reset retries, this should be nominal */ 804 control_phy->link_reset_retries = 10; 805 806 case RELEASE_SPINUP_HOLD: /* 0x02 */ 807 /* decide the func_mask */ 808 control_phy->func_mask = FUNCTION_MASK_DEFAULT; 809 if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD) 810 control_phy->func_mask &= ~SPINUP_HOLD_DIS; 811 else 812 control_phy->func_mask |= SPINUP_HOLD_DIS; 813 } 814 815 control_phy->conn_handle = cpu_to_le16(0xFFFF); 816 817 ascb->tasklet_complete = control_phy_tasklet_complete; 818} 819 820/* ---------- INITIATE LINK ADM TASK ---------- */ 821 822#if 0 823 824static void link_adm_tasklet_complete(struct asd_ascb *ascb, 825 struct done_list_struct *dl) 826{ 827 u8 opcode = dl->opcode; 828 struct initiate_link_adm *link_adm = &ascb->scb->link_adm; 829 u8 phy_id = link_adm->phy_id; 830 831 if (opcode != TC_NO_ERROR) { 832 asd_printk("phy%d: link adm task 0x%x completed with error " 833 "0x%x\n", phy_id, link_adm->sub_func, opcode); 834 } 835 ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n", 836 phy_id, link_adm->sub_func, opcode); 837 838 asd_ascb_free(ascb); 839} 840 841void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id, 842 u8 subfunc) 843{ 844 struct scb *scb = ascb->scb; 845 struct initiate_link_adm *link_adm = &scb->link_adm; 846 847 scb->header.opcode = INITIATE_LINK_ADM_TASK; 848 849 link_adm->phy_id = phy_id; 850 link_adm->sub_func = subfunc; 851 link_adm->conn_handle = cpu_to_le16(0xFFFF); 852 853 ascb->tasklet_complete = link_adm_tasklet_complete; 854} 855 856#endif /* 0 */ 857 858/* ---------- SCB timer ---------- */ 859 860/** 861 * asd_ascb_timedout -- called when a pending SCB's timer has expired 862 * @data: unsigned long, a pointer to the ascb in question 863 * 864 * This is the default timeout function which does the most necessary. 865 * Upper layers can implement their own timeout function, say to free 866 * resources they have with this SCB, and then call this one at the 867 * end of their timeout function. To do this, one should initialize 868 * the ascb->timer.{function, data, expires} prior to calling the post 869 * funcion. The timer is started by the post function. 870 */ 871void asd_ascb_timedout(unsigned long data) 872{ 873 struct asd_ascb *ascb = (void *) data; 874 struct asd_seq_data *seq = &ascb->ha->seq; 875 unsigned long flags; 876 877 ASD_DPRINTK("scb:0x%x timed out\n", ascb->scb->header.opcode); 878 879 spin_lock_irqsave(&seq->pend_q_lock, flags); 880 seq->pending--; 881 list_del_init(&ascb->list); 882 spin_unlock_irqrestore(&seq->pend_q_lock, flags); 883 884 asd_ascb_free(ascb); 885} 886 887/* ---------- CONTROL PHY ---------- */ 888 889/* Given the spec value, return a driver value. */ 890static const int phy_func_table[] = { 891 [PHY_FUNC_NOP] = PHY_NO_OP, 892 [PHY_FUNC_LINK_RESET] = ENABLE_PHY, 893 [PHY_FUNC_HARD_RESET] = EXECUTE_HARD_RESET, 894 [PHY_FUNC_DISABLE] = DISABLE_PHY, 895 [PHY_FUNC_RELEASE_SPINUP_HOLD] = RELEASE_SPINUP_HOLD, 896}; 897 898int asd_control_phy(struct asd_sas_phy *phy, enum phy_func func, void *arg) 899{ 900 struct asd_ha_struct *asd_ha = phy->ha->lldd_ha; 901 struct asd_phy_desc *pd = asd_ha->phys[phy->id].phy_desc; 902 struct asd_ascb *ascb; 903 struct sas_phy_linkrates *rates; 904 int res = 1; 905 906 switch (func) { 907 case PHY_FUNC_CLEAR_ERROR_LOG: 908 return -ENOSYS; 909 case PHY_FUNC_SET_LINK_RATE: 910 rates = arg; 911 if (rates->minimum_linkrate) { 912 pd->min_sas_lrate = rates->minimum_linkrate; 913 pd->min_sata_lrate = rates->minimum_linkrate; 914 } 915 if (rates->maximum_linkrate) { 916 pd->max_sas_lrate = rates->maximum_linkrate; 917 pd->max_sata_lrate = rates->maximum_linkrate; 918 } 919 func = PHY_FUNC_LINK_RESET; 920 break; 921 default: 922 break; 923 } 924 925 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); 926 if (!ascb) 927 return -ENOMEM; 928 929 asd_build_control_phy(ascb, phy->id, phy_func_table[func]); 930 res = asd_post_ascb_list(asd_ha, ascb , 1); 931 if (res) 932 asd_ascb_free(ascb); 933 934 return res; 935} 936