| 1 | /*- |
| 2 | * Copyright (c) 1999 Luoqi Chen. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | * |
| 26 | * $FreeBSD: src/sys/dev/aic/aic.c,v 1.8 2000/01/14 23:42:35 imp Exp $ |
| 27 | * $DragonFly: src/sys/dev/disk/aic/aic.c,v 1.4 2003/08/27 10:35:16 rob Exp $ |
| 28 | */ |
| 29 | |
| 30 | #include <sys/param.h> |
| 31 | #include <sys/systm.h> |
| 32 | #include <sys/malloc.h> |
| 33 | #include <sys/buf.h> |
| 34 | #include <sys/kernel.h> |
| 35 | #include <sys/sysctl.h> |
| 36 | #include <sys/bus.h> |
| 37 | |
| 38 | #include <machine/bus_pio.h> |
| 39 | #include <machine/bus.h> |
| 40 | #include <machine/clock.h> |
| 41 | |
| 42 | #include <bus/cam/cam.h> |
| 43 | #include <bus/cam/cam_ccb.h> |
| 44 | #include <bus/cam/cam_sim.h> |
| 45 | #include <bus/cam/cam_xpt_sim.h> |
| 46 | #include <bus/cam/cam_debug.h> |
| 47 | |
| 48 | #include <bus/cam/scsi/scsi_message.h> |
| 49 | |
| 50 | #include "aic6360reg.h" |
| 51 | #include "aicvar.h" |
| 52 | |
| 53 | static void aic_action (struct cam_sim *sim, union ccb *ccb); |
| 54 | static void aic_execute_scb (void *arg, bus_dma_segment_t *dm_segs, |
| 55 | int nseg, int error); |
| 56 | static void aic_start (struct aic_softc *aic); |
| 57 | static void aic_select (struct aic_softc *aic); |
| 58 | static void aic_selected (struct aic_softc *aic); |
| 59 | static void aic_reselected (struct aic_softc *aic); |
| 60 | static void aic_reconnect (struct aic_softc *aic, int tag); |
| 61 | static void aic_cmd (struct aic_softc *aic); |
| 62 | static void aic_msgin (struct aic_softc *aic); |
| 63 | static void aic_handle_msgin (struct aic_softc *aic); |
| 64 | static void aic_msgout (struct aic_softc *aic); |
| 65 | static void aic_datain (struct aic_softc *aic); |
| 66 | static void aic_dataout (struct aic_softc *aic); |
| 67 | static void aic_done (struct aic_softc *aic, struct aic_scb *scb); |
| 68 | static void aic_poll (struct cam_sim *sim); |
| 69 | static void aic_timeout (void *arg); |
| 70 | static void aic_scsi_reset (struct aic_softc *aic); |
| 71 | static void aic_chip_reset (struct aic_softc *aic); |
| 72 | static void aic_reset (struct aic_softc *aic, int initiate_reset); |
| 73 | |
| 74 | devclass_t aic_devclass; |
| 75 | |
| 76 | static struct aic_scb *free_scbs; |
| 77 | |
| 78 | static struct aic_scb * |
| 79 | aic_get_scb(struct aic_softc *aic) |
| 80 | { |
| 81 | struct aic_scb *scb; |
| 82 | int s = splcam(); |
| 83 | if ((scb = free_scbs) != NULL) |
| 84 | free_scbs = (struct aic_scb *)free_scbs->ccb; |
| 85 | splx(s); |
| 86 | return (scb); |
| 87 | } |
| 88 | |
| 89 | static void |
| 90 | aic_free_scb(struct aic_softc *aic, struct aic_scb *scb) |
| 91 | { |
| 92 | int s = splcam(); |
| 93 | if ((aic->flags & AIC_RESOURCE_SHORTAGE) != 0 && |
| 94 | (scb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) { |
| 95 | scb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ; |
| 96 | aic->flags &= ~AIC_RESOURCE_SHORTAGE; |
| 97 | } |
| 98 | scb->flags = 0; |
| 99 | scb->ccb = (union ccb *)free_scbs; |
| 100 | free_scbs = scb; |
| 101 | splx(s); |
| 102 | } |
| 103 | |
| 104 | static void |
| 105 | aic_action(struct cam_sim *sim, union ccb *ccb) |
| 106 | { |
| 107 | struct aic_softc *aic; |
| 108 | int s; |
| 109 | |
| 110 | CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("aic_action\n")); |
| 111 | |
| 112 | aic = (struct aic_softc *)cam_sim_softc(sim); |
| 113 | |
| 114 | switch (ccb->ccb_h.func_code) { |
| 115 | case XPT_SCSI_IO: /* Execute the requested I/O operation */ |
| 116 | case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */ |
| 117 | { |
| 118 | struct aic_scb *scb; |
| 119 | |
| 120 | if ((scb = aic_get_scb(aic)) == NULL) { |
| 121 | s = splcam(); |
| 122 | aic->flags |= AIC_RESOURCE_SHORTAGE; |
| 123 | splx(s); |
| 124 | xpt_freeze_simq(aic->sim, /*count*/1); |
| 125 | ccb->ccb_h.status = CAM_REQUEUE_REQ; |
| 126 | xpt_done(ccb); |
| 127 | return; |
| 128 | } |
| 129 | |
| 130 | scb->ccb = ccb; |
| 131 | ccb->ccb_h.ccb_scb_ptr = scb; |
| 132 | ccb->ccb_h.ccb_aic_ptr = aic; |
| 133 | |
| 134 | scb->target = ccb->ccb_h.target_id; |
| 135 | scb->lun = ccb->ccb_h.target_lun; |
| 136 | |
| 137 | if (ccb->ccb_h.func_code == XPT_SCSI_IO) { |
| 138 | scb->cmd_len = ccb->csio.cdb_len; |
| 139 | if (ccb->ccb_h.flags & CAM_CDB_POINTER) { |
| 140 | if (ccb->ccb_h.flags & CAM_CDB_PHYS) { |
| 141 | ccb->ccb_h.status = CAM_REQ_INVALID; |
| 142 | aic_free_scb(aic, scb); |
| 143 | xpt_done(ccb); |
| 144 | return; |
| 145 | } |
| 146 | scb->cmd_ptr = ccb->csio.cdb_io.cdb_ptr; |
| 147 | } else { |
| 148 | scb->cmd_ptr = ccb->csio.cdb_io.cdb_bytes; |
| 149 | } |
| 150 | if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { |
| 151 | if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) || |
| 152 | (ccb->ccb_h.flags & CAM_DATA_PHYS)) { |
| 153 | ccb->ccb_h.status = CAM_REQ_INVALID; |
| 154 | aic_free_scb(aic, scb); |
| 155 | xpt_done(ccb); |
| 156 | return; |
| 157 | } |
| 158 | scb->data_ptr = ccb->csio.data_ptr; |
| 159 | scb->data_len = ccb->csio.dxfer_len; |
| 160 | } else { |
| 161 | scb->data_ptr = NULL; |
| 162 | scb->data_len = 0; |
| 163 | } |
| 164 | aic_execute_scb(scb, NULL, 0, 0); |
| 165 | } else { |
| 166 | scb->flags |= SCB_DEVICE_RESET; |
| 167 | aic_execute_scb(scb, NULL, 0, 0); |
| 168 | } |
| 169 | break; |
| 170 | } |
| 171 | case XPT_SET_TRAN_SETTINGS: |
| 172 | { |
| 173 | struct ccb_trans_settings *cts; |
| 174 | struct aic_tinfo *ti; |
| 175 | |
| 176 | cts = &ccb->cts; |
| 177 | ti = &aic->tinfo[ccb->ccb_h.target_id]; |
| 178 | |
| 179 | s = splcam(); |
| 180 | |
| 181 | if ((cts->valid & CCB_TRANS_DISC_VALID) != 0 && |
| 182 | (aic->flags & AIC_DISC_ENABLE) != 0) { |
| 183 | if ((cts->flags & CCB_TRANS_DISC_ENB) != 0) |
| 184 | ti->flags |= TINFO_DISC_ENB; |
| 185 | else |
| 186 | ti->flags &= ~TINFO_DISC_ENB; |
| 187 | } |
| 188 | |
| 189 | if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) { |
| 190 | if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) |
| 191 | ti->flags |= TINFO_TAG_ENB; |
| 192 | else |
| 193 | ti->flags &= ~TINFO_TAG_ENB; |
| 194 | } |
| 195 | |
| 196 | if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0) { |
| 197 | ti->goal.period = cts->sync_period; |
| 198 | if (ti->goal.period != ti->current.period) |
| 199 | ti->flags |= TINFO_SDTR_NEGO; |
| 200 | } |
| 201 | |
| 202 | if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0) { |
| 203 | ti->goal.offset = cts->sync_offset; |
| 204 | if (ti->goal.offset != ti->current.offset) |
| 205 | ti->flags |= TINFO_SDTR_NEGO; |
| 206 | } |
| 207 | |
| 208 | splx(s); |
| 209 | ccb->ccb_h.status = CAM_REQ_CMP; |
| 210 | xpt_done(ccb); |
| 211 | break; |
| 212 | } |
| 213 | case XPT_GET_TRAN_SETTINGS: |
| 214 | { |
| 215 | struct ccb_trans_settings *cts; |
| 216 | struct aic_tinfo *ti; |
| 217 | |
| 218 | cts = &ccb->cts; |
| 219 | ti = &aic->tinfo[ccb->ccb_h.target_id]; |
| 220 | |
| 221 | s = splcam(); |
| 222 | |
| 223 | cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB); |
| 224 | if ((ti->flags & TINFO_DISC_ENB) != 0) |
| 225 | cts->flags |= CCB_TRANS_DISC_ENB; |
| 226 | if ((ti->flags & TINFO_TAG_ENB) != 0) |
| 227 | cts->flags |= CCB_TRANS_TAG_ENB; |
| 228 | |
| 229 | if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) { |
| 230 | cts->sync_period = ti->current.period; |
| 231 | cts->sync_offset = ti->current.offset; |
| 232 | } else { |
| 233 | cts->sync_period = ti->user.period; |
| 234 | cts->sync_offset = ti->user.offset; |
| 235 | } |
| 236 | cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT; |
| 237 | |
| 238 | splx(s); |
| 239 | |
| 240 | cts->valid = CCB_TRANS_SYNC_RATE_VALID |
| 241 | | CCB_TRANS_SYNC_OFFSET_VALID |
| 242 | | CCB_TRANS_BUS_WIDTH_VALID |
| 243 | | CCB_TRANS_DISC_VALID |
| 244 | | CCB_TRANS_TQ_VALID; |
| 245 | |
| 246 | ccb->ccb_h.status = CAM_REQ_CMP; |
| 247 | xpt_done(ccb); |
| 248 | break; |
| 249 | } |
| 250 | case XPT_CALC_GEOMETRY: |
| 251 | { |
| 252 | struct ccb_calc_geometry *ccg; |
| 253 | u_int32_t size_mb; |
| 254 | u_int32_t secs_per_cylinder; |
| 255 | int extended = 0; |
| 256 | |
| 257 | ccg = &ccb->ccg; |
| 258 | size_mb = ccg->volume_size |
| 259 | / ((1024L * 1024L) / ccg->block_size); |
| 260 | |
| 261 | if (size_mb >= 1024 && extended) { |
| 262 | ccg->heads = 255; |
| 263 | ccg->secs_per_track = 63; |
| 264 | } else { |
| 265 | ccg->heads = 64; |
| 266 | ccg->secs_per_track = 32; |
| 267 | } |
| 268 | secs_per_cylinder = ccg->heads * ccg->secs_per_track; |
| 269 | ccg->cylinders = ccg->volume_size / secs_per_cylinder; |
| 270 | ccb->ccb_h.status = CAM_REQ_CMP; |
| 271 | xpt_done(ccb); |
| 272 | break; |
| 273 | } |
| 274 | case XPT_RESET_BUS: /* Reset the specified SCSI bus */ |
| 275 | aic_reset(aic, /*initiate_reset*/TRUE); |
| 276 | ccb->ccb_h.status = CAM_REQ_CMP; |
| 277 | xpt_done(ccb); |
| 278 | break; |
| 279 | case XPT_PATH_INQ: /* Path routing inquiry */ |
| 280 | { |
| 281 | struct ccb_pathinq *cpi = &ccb->cpi; |
| 282 | |
| 283 | cpi->version_num = 1; /* XXX??? */ |
| 284 | cpi->hba_inquiry = PI_SDTR_ABLE | PI_TAG_ABLE; |
| 285 | cpi->target_sprt = 0; |
| 286 | cpi->hba_misc = 0; |
| 287 | cpi->hba_eng_cnt = 0; |
| 288 | cpi->max_target = 7; |
| 289 | cpi->max_lun = 7; |
| 290 | cpi->initiator_id = aic->initiator; |
| 291 | cpi->bus_id = cam_sim_bus(sim); |
| 292 | cpi->base_transfer_speed = 3300; |
| 293 | strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); |
| 294 | strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN); |
| 295 | strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); |
| 296 | cpi->unit_number = cam_sim_unit(sim); |
| 297 | cpi->ccb_h.status = CAM_REQ_CMP; |
| 298 | xpt_done(ccb); |
| 299 | break; |
| 300 | } |
| 301 | default: |
| 302 | ccb->ccb_h.status = CAM_REQ_INVALID; |
| 303 | xpt_done(ccb); |
| 304 | break; |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | static void |
| 309 | aic_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) |
| 310 | { |
| 311 | struct aic_scb *scb = (struct aic_scb *)arg; |
| 312 | union ccb *ccb = scb->ccb; |
| 313 | struct aic_softc *aic = (struct aic_softc *)ccb->ccb_h.ccb_aic_ptr; |
| 314 | int s; |
| 315 | |
| 316 | s = splcam(); |
| 317 | |
| 318 | if (ccb->ccb_h.status != CAM_REQ_INPROG) { |
| 319 | splx(s); |
| 320 | aic_free_scb(aic, scb); |
| 321 | xpt_done(ccb); |
| 322 | return; |
| 323 | } |
| 324 | |
| 325 | scb->flags |= SCB_ACTIVE; |
| 326 | ccb->ccb_h.status |= CAM_SIM_QUEUED; |
| 327 | TAILQ_INSERT_TAIL(&aic->pending_ccbs, &ccb->ccb_h, sim_links.tqe); |
| 328 | |
| 329 | ccb->ccb_h.timeout_ch = timeout(aic_timeout, (caddr_t)scb, |
| 330 | (ccb->ccb_h.timeout * hz) / 1000); |
| 331 | |
| 332 | aic_start(aic); |
| 333 | splx(s); |
| 334 | } |
| 335 | |
| 336 | /* |
| 337 | * Start another command if the controller is not busy. |
| 338 | */ |
| 339 | static void |
| 340 | aic_start(struct aic_softc *aic) |
| 341 | { |
| 342 | struct ccb_hdr *ccb_h; |
| 343 | struct aic_tinfo *ti; |
| 344 | |
| 345 | if (aic->state != AIC_IDLE) |
| 346 | return; |
| 347 | |
| 348 | TAILQ_FOREACH(ccb_h, &aic->pending_ccbs, sim_links.tqe) { |
| 349 | ti = &aic->tinfo[ccb_h->target_id]; |
| 350 | if ((ti->lubusy & (1 << ccb_h->target_lun)) == 0) { |
| 351 | TAILQ_REMOVE(&aic->pending_ccbs, ccb_h, sim_links.tqe); |
| 352 | aic->nexus = (struct aic_scb *)ccb_h->ccb_scb_ptr; |
| 353 | aic_select(aic); |
| 354 | return; |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_start: idle\n")); |
| 359 | |
| 360 | aic_outb(aic, SIMODE0, ENSELDI); |
| 361 | aic_outb(aic, SIMODE1, ENSCSIRST); |
| 362 | aic_outb(aic, SCSISEQ, ENRESELI); |
| 363 | } |
| 364 | |
| 365 | /* |
| 366 | * Start a selection. |
| 367 | */ |
| 368 | static void |
| 369 | aic_select(struct aic_softc *aic) |
| 370 | { |
| 371 | struct aic_scb *scb = aic->nexus; |
| 372 | |
| 373 | CAM_DEBUG(scb->ccb->ccb_h.path, CAM_DEBUG_TRACE, |
| 374 | ("aic_select - ccb %p\n", scb->ccb)); |
| 375 | |
| 376 | aic->state = AIC_SELECTING; |
| 377 | |
| 378 | aic_outb(aic, DMACNTRL1, 0); |
| 379 | aic_outb(aic, SCSIID, aic->initiator << OID_S | scb->target); |
| 380 | aic_outb(aic, SXFRCTL1, STIMO_256ms | ENSTIMER | |
| 381 | (aic->flags & AIC_PARITY_ENABLE ? ENSPCHK : 0)); |
| 382 | |
| 383 | aic_outb(aic, SIMODE0, ENSELDI|ENSELDO); |
| 384 | aic_outb(aic, SIMODE1, ENSCSIRST|ENSELTIMO); |
| 385 | aic_outb(aic, SCSISEQ, ENRESELI|ENSELO|ENAUTOATNO); |
| 386 | } |
| 387 | |
| 388 | /* |
| 389 | * We have successfully selected a target, prepare for the information |
| 390 | * transfer phases. |
| 391 | */ |
| 392 | static void |
| 393 | aic_selected(struct aic_softc *aic) |
| 394 | { |
| 395 | struct aic_scb *scb = aic->nexus; |
| 396 | union ccb *ccb = scb->ccb; |
| 397 | struct aic_tinfo *ti = &aic->tinfo[scb->target]; |
| 398 | |
| 399 | CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, |
| 400 | ("aic_selected - ccb %p\n", ccb)); |
| 401 | |
| 402 | aic->state = AIC_HASNEXUS; |
| 403 | |
| 404 | if (scb->flags & SCB_DEVICE_RESET) { |
| 405 | aic->msg_buf[0] = MSG_BUS_DEV_RESET; |
| 406 | aic->msg_len = 1; |
| 407 | aic->msg_outq = AIC_MSG_MSGBUF; |
| 408 | } else { |
| 409 | aic->msg_outq = AIC_MSG_IDENTIFY; |
| 410 | if ((ti->flags & TINFO_TAG_ENB) != 0 && |
| 411 | (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) |
| 412 | aic->msg_outq |= AIC_MSG_TAG_Q; |
| 413 | else |
| 414 | ti->lubusy |= 1 << scb->lun; |
| 415 | if ((ti->flags & TINFO_SDTR_NEGO) != 0) |
| 416 | aic->msg_outq |= AIC_MSG_SDTR; |
| 417 | } |
| 418 | |
| 419 | aic_outb(aic, CLRSINT0, CLRSELDO); |
| 420 | aic_outb(aic, CLRSINT1, CLRBUSFREE); |
| 421 | aic_outb(aic, SCSISEQ, ENAUTOATNP); |
| 422 | aic_outb(aic, SIMODE0, 0); |
| 423 | aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT); |
| 424 | aic_outb(aic, SCSIRATE, ti->scsirate); |
| 425 | } |
| 426 | |
| 427 | /* |
| 428 | * We are re-selected by a target, save the target id and wait for the |
| 429 | * target to further identify itself. |
| 430 | */ |
| 431 | static void |
| 432 | aic_reselected(struct aic_softc *aic) |
| 433 | { |
| 434 | u_int8_t selid; |
| 435 | |
| 436 | CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_reselected\n")); |
| 437 | |
| 438 | /* |
| 439 | * If we have started a selection, it must have lost out in |
| 440 | * the arbitration, put the command back to the pending queue. |
| 441 | */ |
| 442 | if (aic->nexus) { |
| 443 | TAILQ_INSERT_HEAD(&aic->pending_ccbs, |
| 444 | &aic->nexus->ccb->ccb_h, sim_links.tqe); |
| 445 | aic->nexus = NULL; |
| 446 | } |
| 447 | |
| 448 | selid = aic_inb(aic, SELID) & ~(1 << aic->initiator); |
| 449 | if (selid & (selid - 1)) { |
| 450 | /* this should never have happened */ |
| 451 | printf("aic_reselected: invalid selid %x\n", selid); |
| 452 | aic_reset(aic, /*initiate_reset*/TRUE); |
| 453 | return; |
| 454 | } |
| 455 | |
| 456 | aic->state = AIC_RESELECTED; |
| 457 | aic->target = ffs(selid) - 1; |
| 458 | aic->lun = -1; |
| 459 | |
| 460 | aic_outb(aic, CLRSINT0, CLRSELDI); |
| 461 | aic_outb(aic, CLRSINT1, CLRBUSFREE); |
| 462 | aic_outb(aic, SIMODE0, 0); |
| 463 | aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT); |
| 464 | aic_outb(aic, SCSISEQ, ENAUTOATNP); |
| 465 | aic_outb(aic, SCSIRATE, aic->tinfo[aic->target].scsirate); |
| 466 | } |
| 467 | |
| 468 | /* |
| 469 | * Raise ATNO to signal the target that we have a message for it. |
| 470 | */ |
| 471 | static __inline void |
| 472 | aic_sched_msgout(struct aic_softc *aic, u_int8_t msg) |
| 473 | { |
| 474 | if (msg) { |
| 475 | aic->msg_buf[0] = msg; |
| 476 | aic->msg_len = 1; |
| 477 | } |
| 478 | aic->msg_outq |= AIC_MSG_MSGBUF; |
| 479 | aic_outb(aic, SCSISIGO, aic_inb(aic, SCSISIGI) | ATNO); |
| 480 | } |
| 481 | |
| 482 | /* |
| 483 | * Wait for SPIORDY (SCSI PIO ready) flag, or a phase change. |
| 484 | */ |
| 485 | static __inline int |
| 486 | aic_spiordy(struct aic_softc *aic) |
| 487 | { |
| 488 | while (!(aic_inb(aic, DMASTAT) & INTSTAT) && |
| 489 | !(aic_inb(aic, SSTAT0) & SPIORDY)) |
| 490 | ; |
| 491 | return !(aic_inb(aic, DMASTAT) & INTSTAT); |
| 492 | } |
| 493 | |
| 494 | /* |
| 495 | * Reestablish a disconnected nexus. |
| 496 | */ |
| 497 | void |
| 498 | aic_reconnect(struct aic_softc *aic, int tag) |
| 499 | { |
| 500 | struct aic_scb *scb; |
| 501 | struct ccb_hdr *ccb_h; |
| 502 | |
| 503 | CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_reconnect\n")); |
| 504 | |
| 505 | /* Find the nexus */ |
| 506 | TAILQ_FOREACH(ccb_h, &aic->nexus_ccbs, sim_links.tqe) { |
| 507 | scb = (struct aic_scb *)ccb_h->ccb_scb_ptr; |
| 508 | if (scb->target == aic->target && scb->lun == aic->lun && |
| 509 | (tag == -1 || scb->tag == tag)) |
| 510 | break; |
| 511 | } |
| 512 | |
| 513 | /* ABORT if nothing is found */ |
| 514 | if (!ccb_h) { |
| 515 | if (tag == -1) |
| 516 | aic_sched_msgout(aic, MSG_ABORT); |
| 517 | else |
| 518 | aic_sched_msgout(aic, MSG_ABORT_TAG); |
| 519 | xpt_async(AC_UNSOL_RESEL, aic->path, NULL); |
| 520 | return; |
| 521 | } |
| 522 | |
| 523 | /* Reestablish the nexus */ |
| 524 | TAILQ_REMOVE(&aic->nexus_ccbs, ccb_h, sim_links.tqe); |
| 525 | aic->nexus = scb; |
| 526 | scb->flags &= ~SCB_DISCONNECTED; |
| 527 | aic->state = AIC_HASNEXUS; |
| 528 | } |
| 529 | |
| 530 | /* |
| 531 | * Read messages. |
| 532 | */ |
| 533 | static void |
| 534 | aic_msgin(struct aic_softc *aic) |
| 535 | { |
| 536 | int msglen; |
| 537 | |
| 538 | CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_msgin\n")); |
| 539 | |
| 540 | aic_outb(aic, SIMODE1, ENSCSIRST|ENPHASEMIS|ENBUSFREE); |
| 541 | aic_outb(aic, SXFRCTL0, CHEN|SPIOEN); |
| 542 | |
| 543 | aic->flags &= ~AIC_DROP_MSGIN; |
| 544 | aic->msg_len = 0; |
| 545 | do { |
| 546 | /* |
| 547 | * If a parity error is detected, drop the remaining |
| 548 | * bytes and inform the target so it could resend |
| 549 | * the messages. |
| 550 | */ |
| 551 | if (aic_inb(aic, SSTAT1) & SCSIPERR) { |
| 552 | aic_outb(aic, CLRSINT1, CLRSCSIPERR); |
| 553 | aic->flags |= AIC_DROP_MSGIN; |
| 554 | aic_sched_msgout(aic, MSG_PARITY_ERROR); |
| 555 | } |
| 556 | if ((aic->flags & AIC_DROP_MSGIN)) { |
| 557 | aic_inb(aic, SCSIDAT); |
| 558 | continue; |
| 559 | } |
| 560 | /* read the message byte without ACKing on it */ |
| 561 | aic->msg_buf[aic->msg_len++] = aic_inb(aic, SCSIBUS); |
| 562 | if (aic->msg_buf[0] == MSG_EXTENDED) { |
| 563 | if (aic->msg_len < 2) { |
| 564 | (void) aic_inb(aic, SCSIDAT); |
| 565 | continue; |
| 566 | } |
| 567 | switch (aic->msg_buf[2]) { |
| 568 | case MSG_EXT_SDTR: |
| 569 | msglen = MSG_EXT_SDTR_LEN; |
| 570 | break; |
| 571 | case MSG_EXT_WDTR: |
| 572 | msglen = MSG_EXT_WDTR_LEN; |
| 573 | break; |
| 574 | default: |
| 575 | msglen = 0; |
| 576 | break; |
| 577 | } |
| 578 | if (aic->msg_buf[1] != msglen) { |
| 579 | aic->flags |= AIC_DROP_MSGIN; |
| 580 | aic_sched_msgout(aic, MSG_MESSAGE_REJECT); |
| 581 | } |
| 582 | msglen += 2; |
| 583 | } else if (aic->msg_buf[0] >= 0x20 && aic->msg_buf[0] <= 0x2f) |
| 584 | msglen = 2; |
| 585 | else |
| 586 | msglen = 1; |
| 587 | /* |
| 588 | * If we have a complete message, handle it before the final |
| 589 | * ACK (in case we decide to reject the message). |
| 590 | */ |
| 591 | if (aic->msg_len == msglen) { |
| 592 | aic_handle_msgin(aic); |
| 593 | aic->msg_len = 0; |
| 594 | } |
| 595 | /* ACK on the message byte */ |
| 596 | (void) aic_inb(aic, SCSIDAT); |
| 597 | } while (aic_spiordy(aic)); |
| 598 | |
| 599 | aic_outb(aic, SXFRCTL0, CHEN); |
| 600 | aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT); |
| 601 | } |
| 602 | |
| 603 | /* |
| 604 | * Handle a message. |
| 605 | */ |
| 606 | static void |
| 607 | aic_handle_msgin(struct aic_softc *aic) |
| 608 | { |
| 609 | struct aic_scb *scb; |
| 610 | struct ccb_hdr *ccb_h; |
| 611 | struct aic_tinfo *ti; |
| 612 | struct ccb_trans_settings neg; |
| 613 | |
| 614 | if (aic->state == AIC_RESELECTED) { |
| 615 | if (!MSG_ISIDENTIFY(aic->msg_buf[0])) { |
| 616 | aic_sched_msgout(aic, MSG_MESSAGE_REJECT); |
| 617 | return; |
| 618 | } |
| 619 | aic->lun = aic->msg_buf[0] & MSG_IDENTIFY_LUNMASK; |
| 620 | if (aic->tinfo[aic->target].lubusy & (1 << aic->lun)) |
| 621 | aic_reconnect(aic, -1); |
| 622 | else |
| 623 | aic->state = AIC_RECONNECTING; |
| 624 | return; |
| 625 | } |
| 626 | |
| 627 | if (aic->state == AIC_RECONNECTING) { |
| 628 | if (aic->msg_buf[0] != MSG_SIMPLE_Q_TAG) { |
| 629 | aic_sched_msgout(aic, MSG_MESSAGE_REJECT); |
| 630 | return; |
| 631 | } |
| 632 | aic_reconnect(aic, aic->msg_buf[1]); |
| 633 | return; |
| 634 | } |
| 635 | |
| 636 | switch (aic->msg_buf[0]) { |
| 637 | case MSG_CMDCOMPLETE: { |
| 638 | struct ccb_scsiio *csio; |
| 639 | scb = aic->nexus; |
| 640 | ccb_h = &scb->ccb->ccb_h; |
| 641 | csio = &scb->ccb->csio; |
| 642 | if ((scb->flags & SCB_SENSE) != 0) { |
| 643 | /* auto REQUEST SENSE command */ |
| 644 | scb->flags &= ~SCB_SENSE; |
| 645 | csio->sense_resid = scb->data_len; |
| 646 | if (scb->status == SCSI_STATUS_OK) { |
| 647 | ccb_h->status |= |
| 648 | CAM_SCSI_STATUS_ERROR|CAM_AUTOSNS_VALID; |
| 649 | /*scsi_sense_print(csio);*/ |
| 650 | } else { |
| 651 | ccb_h->status |= CAM_AUTOSENSE_FAIL; |
| 652 | printf("ccb %p sense failed %x\n", |
| 653 | ccb_h, scb->status); |
| 654 | } |
| 655 | } else { |
| 656 | csio->scsi_status = scb->status; |
| 657 | csio->resid = scb->data_len; |
| 658 | if (scb->status == SCSI_STATUS_OK) { |
| 659 | /* everything goes well */ |
| 660 | ccb_h->status |= CAM_REQ_CMP; |
| 661 | } else if ((ccb_h->flags & CAM_DIS_AUTOSENSE) == 0 && |
| 662 | (csio->scsi_status == SCSI_STATUS_CHECK_COND || |
| 663 | csio->scsi_status == SCSI_STATUS_CMD_TERMINATED)) { |
| 664 | /* try to retrieve sense information */ |
| 665 | scb->flags |= SCB_SENSE; |
| 666 | aic->flags |= AIC_BUSFREE_OK; |
| 667 | return; |
| 668 | } else |
| 669 | ccb_h->status |= CAM_SCSI_STATUS_ERROR; |
| 670 | } |
| 671 | aic_done(aic, scb); |
| 672 | aic->flags |= AIC_BUSFREE_OK; |
| 673 | break; |
| 674 | } |
| 675 | case MSG_EXTENDED: |
| 676 | switch (aic->msg_buf[2]) { |
| 677 | case MSG_EXT_SDTR: |
| 678 | scb = aic->nexus; |
| 679 | ti = &aic->tinfo[scb->target]; |
| 680 | if (ti->flags & TINFO_SDTR_SENT) { |
| 681 | ti->current.period = aic->msg_buf[3]; |
| 682 | ti->current.offset = aic->msg_buf[4]; |
| 683 | } else { |
| 684 | ti->current.period = aic->msg_buf[3] = |
| 685 | max(ti->goal.period, aic->msg_buf[3]); |
| 686 | ti->current.offset = aic->msg_buf[4] = |
| 687 | min(ti->goal.offset, aic->msg_buf[4]); |
| 688 | /* |
| 689 | * The target initiated the negotiation, |
| 690 | * send back a response. |
| 691 | */ |
| 692 | aic_sched_msgout(aic, 0); |
| 693 | } |
| 694 | ti->flags &= ~(TINFO_SDTR_SENT|TINFO_SDTR_NEGO); |
| 695 | ti->scsirate = ti->current.offset ? ti->current.offset | |
| 696 | ((ti->current.period * 4 + 49) / 50 - 2) << 4 : 0; |
| 697 | aic_outb(aic, SCSIRATE, ti->scsirate); |
| 698 | neg.sync_period = ti->goal.period = ti->current.period; |
| 699 | neg.sync_offset = ti->goal.offset = ti->current.offset; |
| 700 | neg.valid = CCB_TRANS_SYNC_RATE_VALID |
| 701 | | CCB_TRANS_SYNC_OFFSET_VALID; |
| 702 | ccb_h = &scb->ccb->ccb_h; |
| 703 | xpt_setup_ccb(&neg.ccb_h, ccb_h->path, 1); |
| 704 | xpt_async(AC_TRANSFER_NEG, ccb_h->path, &neg); |
| 705 | break; |
| 706 | case MSG_EXT_WDTR: |
| 707 | default: |
| 708 | aic_sched_msgout(aic, MSG_MESSAGE_REJECT); |
| 709 | break; |
| 710 | } |
| 711 | break; |
| 712 | case MSG_DISCONNECT: |
| 713 | scb = aic->nexus; |
| 714 | ccb_h = &scb->ccb->ccb_h; |
| 715 | TAILQ_INSERT_TAIL(&aic->nexus_ccbs, ccb_h, sim_links.tqe); |
| 716 | scb->flags |= SCB_DISCONNECTED; |
| 717 | aic->flags |= AIC_BUSFREE_OK; |
| 718 | aic->nexus = NULL; |
| 719 | CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE, ("disconnected\n")); |
| 720 | break; |
| 721 | case MSG_MESSAGE_REJECT: |
| 722 | switch (aic->msg_outq & -aic->msg_outq) { |
| 723 | case AIC_MSG_TAG_Q: |
| 724 | scb = aic->nexus; |
| 725 | ti = &aic->tinfo[scb->target]; |
| 726 | ti->flags &= ~TINFO_TAG_ENB; |
| 727 | ti->lubusy |= 1 << scb->lun; |
| 728 | break; |
| 729 | case AIC_MSG_SDTR: |
| 730 | scb = aic->nexus; |
| 731 | ti = &aic->tinfo[scb->target]; |
| 732 | ti->current.period = ti->goal.period = 0; |
| 733 | ti->current.offset = ti->goal.offset = 0; |
| 734 | ti->flags &= ~(TINFO_SDTR_SENT|TINFO_SDTR_NEGO); |
| 735 | ti->scsirate = 0; |
| 736 | aic_outb(aic, SCSIRATE, ti->scsirate); |
| 737 | neg.sync_period = ti->current.period; |
| 738 | neg.sync_offset = ti->current.offset; |
| 739 | neg.valid = CCB_TRANS_SYNC_RATE_VALID |
| 740 | | CCB_TRANS_SYNC_OFFSET_VALID; |
| 741 | ccb_h = &scb->ccb->ccb_h; |
| 742 | xpt_setup_ccb(&neg.ccb_h, ccb_h->path, 1); |
| 743 | xpt_async(AC_TRANSFER_NEG, ccb_h->path, &neg); |
| 744 | break; |
| 745 | default: |
| 746 | break; |
| 747 | } |
| 748 | break; |
| 749 | case MSG_SAVEDATAPOINTER: |
| 750 | break; |
| 751 | case MSG_RESTOREPOINTERS: |
| 752 | break; |
| 753 | case MSG_NOOP: |
| 754 | break; |
| 755 | default: |
| 756 | aic_sched_msgout(aic, MSG_MESSAGE_REJECT); |
| 757 | break; |
| 758 | } |
| 759 | } |
| 760 | |
| 761 | /* |
| 762 | * Send messages. |
| 763 | */ |
| 764 | static void |
| 765 | aic_msgout(struct aic_softc *aic) |
| 766 | { |
| 767 | struct aic_scb *scb; |
| 768 | union ccb *ccb; |
| 769 | struct aic_tinfo *ti; |
| 770 | int msgidx = 0; |
| 771 | |
| 772 | CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_msgout\n")); |
| 773 | |
| 774 | aic_outb(aic, SIMODE1, ENSCSIRST|ENPHASEMIS|ENBUSFREE); |
| 775 | aic_outb(aic, SXFRCTL0, CHEN|SPIOEN); |
| 776 | |
| 777 | /* |
| 778 | * If the previous phase is also the message out phase, |
| 779 | * we need to retransmit all the messages, probably |
| 780 | * because the target has detected a parity error during |
| 781 | * the past transmission. |
| 782 | */ |
| 783 | if (aic->prev_phase == PH_MSGOUT) |
| 784 | aic->msg_outq = aic->msg_sent; |
| 785 | |
| 786 | do { |
| 787 | int q = aic->msg_outq; |
| 788 | if (msgidx > 0 && msgidx == aic->msg_len) { |
| 789 | /* complete message sent, start the next one */ |
| 790 | q &= -q; |
| 791 | aic->msg_sent |= q; |
| 792 | aic->msg_outq ^= q; |
| 793 | q = aic->msg_outq; |
| 794 | msgidx = 0; |
| 795 | } |
| 796 | if (msgidx == 0) { |
| 797 | /* setup the message */ |
| 798 | switch (q & -q) { |
| 799 | case AIC_MSG_IDENTIFY: |
| 800 | scb = aic->nexus; |
| 801 | ccb = scb->ccb; |
| 802 | ti = &aic->tinfo[scb->target]; |
| 803 | aic->msg_buf[0] = MSG_IDENTIFY(scb->lun, |
| 804 | (ti->flags & TINFO_DISC_ENB) && |
| 805 | !(ccb->ccb_h.flags & CAM_DIS_DISCONNECT)); |
| 806 | aic->msg_len = 1; |
| 807 | break; |
| 808 | case AIC_MSG_TAG_Q: |
| 809 | scb = aic->nexus; |
| 810 | ccb = scb->ccb; |
| 811 | aic->msg_buf[0] = ccb->csio.tag_action; |
| 812 | aic->msg_buf[1] = scb->tag; |
| 813 | aic->msg_len = 2; |
| 814 | break; |
| 815 | case AIC_MSG_SDTR: |
| 816 | scb = aic->nexus; |
| 817 | ti = &aic->tinfo[scb->target]; |
| 818 | aic->msg_buf[0] = MSG_EXTENDED; |
| 819 | aic->msg_buf[1] = MSG_EXT_SDTR_LEN; |
| 820 | aic->msg_buf[2] = MSG_EXT_SDTR; |
| 821 | aic->msg_buf[3] = ti->goal.period; |
| 822 | aic->msg_buf[4] = ti->goal.offset; |
| 823 | aic->msg_len = MSG_EXT_SDTR_LEN + 2; |
| 824 | ti->flags |= TINFO_SDTR_SENT; |
| 825 | break; |
| 826 | case AIC_MSG_MSGBUF: |
| 827 | /* a single message already in the buffer */ |
| 828 | if (aic->msg_buf[0] == MSG_BUS_DEV_RESET || |
| 829 | aic->msg_buf[0] == MSG_ABORT || |
| 830 | aic->msg_buf[0] == MSG_ABORT_TAG) |
| 831 | aic->flags |= AIC_BUSFREE_OK; |
| 832 | break; |
| 833 | } |
| 834 | } |
| 835 | /* |
| 836 | * If this is the last message byte of all messages, |
| 837 | * clear ATNO to signal transmission complete. |
| 838 | */ |
| 839 | if ((q & (q - 1)) == 0 && msgidx == aic->msg_len - 1) |
| 840 | aic_outb(aic, CLRSINT1, CLRATNO); |
| 841 | /* transmit the message byte */ |
| 842 | aic_outb(aic, SCSIDAT, aic->msg_buf[msgidx++]); |
| 843 | } while (aic_spiordy(aic)); |
| 844 | |
| 845 | aic_outb(aic, SXFRCTL0, CHEN); |
| 846 | aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT); |
| 847 | } |
| 848 | |
| 849 | /* |
| 850 | * Read data bytes. |
| 851 | */ |
| 852 | static void |
| 853 | aic_datain(struct aic_softc *aic) |
| 854 | { |
| 855 | struct aic_scb *scb = aic->nexus; |
| 856 | u_int8_t dmastat, dmacntrl0; |
| 857 | int n; |
| 858 | |
| 859 | CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_datain\n")); |
| 860 | |
| 861 | aic_outb(aic, SIMODE1, ENSCSIRST|ENPHASEMIS|ENBUSFREE); |
| 862 | aic_outb(aic, SXFRCTL0, SCSIEN|DMAEN|CHEN); |
| 863 | |
| 864 | dmacntrl0 = ENDMA; |
| 865 | if (aic->flags & AIC_DWIO_ENABLE) |
| 866 | dmacntrl0 |= DWORDPIO; |
| 867 | aic_outb(aic, DMACNTRL0, dmacntrl0); |
| 868 | |
| 869 | while (scb->data_len > 0) { |
| 870 | for (;;) { |
| 871 | /* wait for the fifo to fill up or a phase change */ |
| 872 | dmastat = aic_inb(aic, DMASTAT); |
| 873 | if (dmastat & (INTSTAT|DFIFOFULL)) |
| 874 | break; |
| 875 | } |
| 876 | if (dmastat & DFIFOFULL) { |
| 877 | n = FIFOSIZE; |
| 878 | } else { |
| 879 | /* |
| 880 | * No more data, wait for the remaining bytes in |
| 881 | * the scsi fifo to be transfer to the host fifo. |
| 882 | */ |
| 883 | while (!(aic_inb(aic, SSTAT2) & SEMPTY)) |
| 884 | ; |
| 885 | n = aic_inb(aic, FIFOSTAT); |
| 886 | } |
| 887 | n = imin(scb->data_len, n); |
| 888 | if (aic->flags & AIC_DWIO_ENABLE) { |
| 889 | if (n >= 12) { |
| 890 | aic_insl(aic, DMADATALONG, scb->data_ptr, n>>2); |
| 891 | scb->data_ptr += n & ~3; |
| 892 | scb->data_len -= n & ~3; |
| 893 | n &= 3; |
| 894 | } |
| 895 | } else { |
| 896 | if (n >= 8) { |
| 897 | aic_insw(aic, DMADATA, scb->data_ptr, n >> 1); |
| 898 | scb->data_ptr += n & ~1; |
| 899 | scb->data_len -= n & ~1; |
| 900 | n &= 1; |
| 901 | } |
| 902 | } |
| 903 | if (n) { |
| 904 | aic_outb(aic, DMACNTRL0, ENDMA|B8MODE); |
| 905 | aic_insb(aic, DMADATA, scb->data_ptr, n); |
| 906 | scb->data_ptr += n; |
| 907 | scb->data_len -= n; |
| 908 | aic_outb(aic, DMACNTRL0, dmacntrl0); |
| 909 | } |
| 910 | |
| 911 | if (dmastat & INTSTAT) |
| 912 | break; |
| 913 | } |
| 914 | |
| 915 | aic_outb(aic, SXFRCTL0, CHEN); |
| 916 | aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT); |
| 917 | } |
| 918 | |
| 919 | /* |
| 920 | * Send data bytes. |
| 921 | */ |
| 922 | static void |
| 923 | aic_dataout(struct aic_softc *aic) |
| 924 | { |
| 925 | struct aic_scb *scb = aic->nexus; |
| 926 | u_int8_t dmastat, dmacntrl0, sstat2; |
| 927 | int n; |
| 928 | |
| 929 | CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_dataout\n")); |
| 930 | |
| 931 | aic_outb(aic, SIMODE1, ENSCSIRST|ENPHASEMIS|ENBUSFREE); |
| 932 | aic_outb(aic, SXFRCTL0, SCSIEN|DMAEN|CHEN); |
| 933 | |
| 934 | dmacntrl0 = ENDMA|WRITE; |
| 935 | if (aic->flags & AIC_DWIO_ENABLE) |
| 936 | dmacntrl0 |= DWORDPIO; |
| 937 | aic_outb(aic, DMACNTRL0, dmacntrl0); |
| 938 | |
| 939 | while (scb->data_len > 0) { |
| 940 | for (;;) { |
| 941 | /* wait for the fifo to clear up or a phase change */ |
| 942 | dmastat = aic_inb(aic, DMASTAT); |
| 943 | if (dmastat & (INTSTAT|DFIFOEMP)) |
| 944 | break; |
| 945 | } |
| 946 | if (dmastat & INTSTAT) |
| 947 | break; |
| 948 | n = imin(scb->data_len, FIFOSIZE); |
| 949 | if (aic->flags & AIC_DWIO_ENABLE) { |
| 950 | if (n >= 12) { |
| 951 | aic_outsl(aic, DMADATALONG, scb->data_ptr,n>>2); |
| 952 | scb->data_ptr += n & ~3; |
| 953 | scb->data_len -= n & ~3; |
| 954 | n &= 3; |
| 955 | } |
| 956 | } else { |
| 957 | if (n >= 8) { |
| 958 | aic_outsw(aic, DMADATA, scb->data_ptr, n >> 1); |
| 959 | scb->data_ptr += n & ~1; |
| 960 | scb->data_len -= n & ~1; |
| 961 | n &= 1; |
| 962 | } |
| 963 | } |
| 964 | if (n) { |
| 965 | aic_outb(aic, DMACNTRL0, ENDMA|WRITE|B8MODE); |
| 966 | aic_outsb(aic, DMADATA, scb->data_ptr, n); |
| 967 | scb->data_ptr += n; |
| 968 | scb->data_len -= n; |
| 969 | aic_outb(aic, DMACNTRL0, dmacntrl0); |
| 970 | } |
| 971 | } |
| 972 | |
| 973 | for (;;) { |
| 974 | /* wait until all bytes in the fifos are transmitted */ |
| 975 | dmastat = aic_inb(aic, DMASTAT); |
| 976 | sstat2 = aic_inb(aic, SSTAT2); |
| 977 | if ((dmastat & DFIFOEMP) && (sstat2 & SEMPTY)) |
| 978 | break; |
| 979 | if (dmastat & INTSTAT) { |
| 980 | /* adjust for untransmitted bytes */ |
| 981 | n = aic_inb(aic, FIFOSTAT) + (sstat2 & 0xf); |
| 982 | scb->data_ptr -= n; |
| 983 | scb->data_len += n; |
| 984 | /* clear the fifo */ |
| 985 | aic_outb(aic, SXFRCTL0, CHEN|CLRCH); |
| 986 | aic_outb(aic, DMACNTRL0, RSTFIFO); |
| 987 | break; |
| 988 | } |
| 989 | } |
| 990 | |
| 991 | aic_outb(aic, SXFRCTL0, CHEN); |
| 992 | aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT); |
| 993 | } |
| 994 | |
| 995 | /* |
| 996 | * Send the scsi command. |
| 997 | */ |
| 998 | static void |
| 999 | aic_cmd(struct aic_softc *aic) |
| 1000 | { |
| 1001 | struct aic_scb *scb = aic->nexus; |
| 1002 | struct scsi_request_sense sense_cmd; |
| 1003 | |
| 1004 | CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_cmd\n")); |
| 1005 | |
| 1006 | if (scb->flags & SCB_SENSE) { |
| 1007 | /* autosense request */ |
| 1008 | sense_cmd.opcode = REQUEST_SENSE; |
| 1009 | sense_cmd.byte2 = scb->lun << 5; |
| 1010 | sense_cmd.length = scb->ccb->csio.sense_len; |
| 1011 | sense_cmd.control = 0; |
| 1012 | sense_cmd.unused[0] = 0; |
| 1013 | sense_cmd.unused[1] = 0; |
| 1014 | scb->cmd_ptr = (u_int8_t *)&sense_cmd; |
| 1015 | scb->cmd_len = sizeof(sense_cmd); |
| 1016 | scb->data_ptr = (u_int8_t *)&scb->ccb->csio.sense_data; |
| 1017 | scb->data_len = scb->ccb->csio.sense_len; |
| 1018 | } |
| 1019 | |
| 1020 | aic_outb(aic, SIMODE1, ENSCSIRST|ENPHASEMIS|ENBUSFREE); |
| 1021 | aic_outb(aic, DMACNTRL0, ENDMA|WRITE); |
| 1022 | aic_outb(aic, SXFRCTL0, SCSIEN|DMAEN|CHEN); |
| 1023 | aic_outsw(aic, DMADATA, (u_int16_t *)scb->cmd_ptr, scb->cmd_len >> 1); |
| 1024 | while ((aic_inb(aic, SSTAT2) & SEMPTY) == 0 && |
| 1025 | (aic_inb(aic, DMASTAT) & INTSTAT) == 0) |
| 1026 | ; |
| 1027 | aic_outb(aic, SXFRCTL0, CHEN); |
| 1028 | aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT); |
| 1029 | } |
| 1030 | |
| 1031 | /* |
| 1032 | * Finish off a command. The caller is responsible to remove the ccb |
| 1033 | * from any queue. |
| 1034 | */ |
| 1035 | static void |
| 1036 | aic_done(struct aic_softc *aic, struct aic_scb *scb) |
| 1037 | { |
| 1038 | union ccb *ccb = scb->ccb; |
| 1039 | |
| 1040 | CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, |
| 1041 | ("aic_done - ccb %p status %x resid %d\n", |
| 1042 | ccb, ccb->ccb_h.status, ccb->csio.resid)); |
| 1043 | |
| 1044 | untimeout(aic_timeout, (caddr_t)scb, ccb->ccb_h.timeout_ch); |
| 1045 | |
| 1046 | if ((scb->flags & SCB_DEVICE_RESET) != 0 && |
| 1047 | ccb->ccb_h.func_code != XPT_RESET_DEV) { |
| 1048 | struct cam_path *path; |
| 1049 | struct ccb_hdr *ccb_h; |
| 1050 | cam_status error; |
| 1051 | |
| 1052 | error = xpt_create_path(&path, /*periph*/NULL, |
| 1053 | cam_sim_path(aic->sim), |
| 1054 | scb->target, |
| 1055 | CAM_LUN_WILDCARD); |
| 1056 | |
| 1057 | if (error == CAM_REQ_CMP) { |
| 1058 | xpt_async(AC_SENT_BDR, path, NULL); |
| 1059 | xpt_free_path(path); |
| 1060 | } |
| 1061 | |
| 1062 | ccb_h = TAILQ_FIRST(&aic->pending_ccbs); |
| 1063 | while (ccb_h != NULL) { |
| 1064 | struct aic_scb *pending_scb; |
| 1065 | |
| 1066 | pending_scb = (struct aic_scb *)ccb_h->ccb_scb_ptr; |
| 1067 | if (ccb_h->target_id == scb->target) { |
| 1068 | ccb_h->status |= CAM_BDR_SENT; |
| 1069 | ccb_h = TAILQ_NEXT(ccb_h, sim_links.tqe); |
| 1070 | TAILQ_REMOVE(&aic->pending_ccbs, |
| 1071 | &pending_scb->ccb->ccb_h, sim_links.tqe); |
| 1072 | aic_done(aic, pending_scb); |
| 1073 | } else { |
| 1074 | ccb_h->timeout_ch = |
| 1075 | timeout(aic_timeout, (caddr_t)pending_scb, |
| 1076 | (ccb_h->timeout * hz) / 1000); |
| 1077 | ccb_h = TAILQ_NEXT(ccb_h, sim_links.tqe); |
| 1078 | } |
| 1079 | } |
| 1080 | |
| 1081 | ccb_h = TAILQ_FIRST(&aic->nexus_ccbs); |
| 1082 | while (ccb_h != NULL) { |
| 1083 | struct aic_scb *nexus_scb; |
| 1084 | |
| 1085 | nexus_scb = (struct aic_scb *)ccb_h->ccb_scb_ptr; |
| 1086 | if (ccb_h->target_id == scb->target) { |
| 1087 | ccb_h->status |= CAM_BDR_SENT; |
| 1088 | ccb_h = TAILQ_NEXT(ccb_h, sim_links.tqe); |
| 1089 | TAILQ_REMOVE(&aic->nexus_ccbs, |
| 1090 | &nexus_scb->ccb->ccb_h, sim_links.tqe); |
| 1091 | aic_done(aic, nexus_scb); |
| 1092 | } else { |
| 1093 | ccb_h->timeout_ch = |
| 1094 | timeout(aic_timeout, (caddr_t)nexus_scb, |
| 1095 | (ccb_h->timeout * hz) / 1000); |
| 1096 | ccb_h = TAILQ_NEXT(ccb_h, sim_links.tqe); |
| 1097 | } |
| 1098 | } |
| 1099 | } |
| 1100 | |
| 1101 | if (aic->nexus == scb || scb->flags & SCB_DISCONNECTED) |
| 1102 | aic->tinfo[scb->target].lubusy &= ~(1 << scb->lun); |
| 1103 | |
| 1104 | if (aic->nexus == scb) { |
| 1105 | aic->nexus = NULL; |
| 1106 | } |
| 1107 | aic_free_scb(aic, scb); |
| 1108 | xpt_done(ccb); |
| 1109 | } |
| 1110 | |
| 1111 | static void |
| 1112 | aic_poll(struct cam_sim *sim) |
| 1113 | { |
| 1114 | aic_intr(cam_sim_softc(sim)); |
| 1115 | } |
| 1116 | |
| 1117 | static void |
| 1118 | aic_timeout(void *arg) |
| 1119 | { |
| 1120 | struct aic_scb *scb = (struct aic_scb *)arg; |
| 1121 | union ccb *ccb = scb->ccb; |
| 1122 | struct aic_softc *aic = (struct aic_softc *)ccb->ccb_h.ccb_aic_ptr; |
| 1123 | int s; |
| 1124 | |
| 1125 | xpt_print_path(ccb->ccb_h.path); |
| 1126 | printf("ccb %p - timed out", ccb); |
| 1127 | if (aic->nexus && aic->nexus != scb) |
| 1128 | printf(", nexus %p", aic->nexus->ccb); |
| 1129 | printf(", phase 0x%x, state %d\n", aic_inb(aic, SCSISIGI), aic->state); |
| 1130 | |
| 1131 | s = splcam(); |
| 1132 | |
| 1133 | if ((scb->flags & SCB_ACTIVE) == 0) { |
| 1134 | splx(s); |
| 1135 | xpt_print_path(ccb->ccb_h.path); |
| 1136 | printf("ccb %p - timed out already completed\n", ccb); |
| 1137 | return; |
| 1138 | } |
| 1139 | |
| 1140 | if ((scb->flags & SCB_DEVICE_RESET) == 0 && aic->nexus == scb) { |
| 1141 | struct ccb_hdr *ccb_h = &scb->ccb->ccb_h; |
| 1142 | |
| 1143 | if ((ccb_h->status & CAM_RELEASE_SIMQ) == 0) { |
| 1144 | xpt_freeze_simq(aic->sim, /*count*/1); |
| 1145 | ccb_h->status |= CAM_RELEASE_SIMQ; |
| 1146 | } |
| 1147 | |
| 1148 | TAILQ_FOREACH(ccb_h, &aic->pending_ccbs, sim_links.tqe) { |
| 1149 | untimeout(aic_timeout, (caddr_t)ccb_h->ccb_scb_ptr, |
| 1150 | ccb_h->timeout_ch); |
| 1151 | } |
| 1152 | |
| 1153 | TAILQ_FOREACH(ccb_h, &aic->nexus_ccbs, sim_links.tqe) { |
| 1154 | untimeout(aic_timeout, (caddr_t)ccb_h->ccb_scb_ptr, |
| 1155 | ccb_h->timeout_ch); |
| 1156 | } |
| 1157 | |
| 1158 | scb->flags |= SCB_DEVICE_RESET; |
| 1159 | ccb->ccb_h.timeout_ch = |
| 1160 | timeout(aic_timeout, (caddr_t)scb, 5 * hz); |
| 1161 | aic_sched_msgout(aic, MSG_BUS_DEV_RESET); |
| 1162 | } else { |
| 1163 | if (aic->nexus == scb) { |
| 1164 | ccb->ccb_h.status |= CAM_CMD_TIMEOUT; |
| 1165 | aic_done(aic, scb); |
| 1166 | } |
| 1167 | aic_reset(aic, /*initiate_reset*/TRUE); |
| 1168 | } |
| 1169 | |
| 1170 | splx(s); |
| 1171 | } |
| 1172 | |
| 1173 | void |
| 1174 | aic_intr(void *arg) |
| 1175 | { |
| 1176 | struct aic_softc *aic = (struct aic_softc *)arg; |
| 1177 | u_int8_t sstat0, sstat1; |
| 1178 | union ccb *ccb; |
| 1179 | struct aic_scb *scb; |
| 1180 | |
| 1181 | if (!(aic_inb(aic, DMASTAT) & INTSTAT)) |
| 1182 | return; |
| 1183 | |
| 1184 | aic_outb(aic, DMACNTRL0, 0); |
| 1185 | |
| 1186 | sstat0 = aic_inb(aic, SSTAT0); |
| 1187 | sstat1 = aic_inb(aic, SSTAT1); |
| 1188 | |
| 1189 | if ((sstat1 & SCSIRSTI) != 0) { |
| 1190 | /* a device-initiated bus reset */ |
| 1191 | aic_outb(aic, CLRSINT1, CLRSCSIRSTI); |
| 1192 | aic_reset(aic, /*initiate_reset*/FALSE); |
| 1193 | return; |
| 1194 | } |
| 1195 | |
| 1196 | if ((sstat1 & SCSIPERR) != 0) { |
| 1197 | aic_outb(aic, CLRSINT1, CLRSCSIPERR); |
| 1198 | aic_sched_msgout(aic, MSG_PARITY_ERROR); |
| 1199 | aic_outb(aic, DMACNTRL0, INTEN); |
| 1200 | return; |
| 1201 | } |
| 1202 | |
| 1203 | if (aic_inb(aic, SSTAT4)) { |
| 1204 | aic_outb(aic, CLRSERR, CLRSYNCERR|CLRFWERR|CLRFRERR); |
| 1205 | aic_reset(aic, /*initiate_reset*/TRUE); |
| 1206 | return; |
| 1207 | } |
| 1208 | |
| 1209 | if (aic->state <= AIC_SELECTING) { |
| 1210 | if ((sstat0 & SELDI) != 0) { |
| 1211 | aic_reselected(aic); |
| 1212 | aic_outb(aic, DMACNTRL0, INTEN); |
| 1213 | return; |
| 1214 | } |
| 1215 | |
| 1216 | if ((sstat0 & SELDO) != 0) { |
| 1217 | aic_selected(aic); |
| 1218 | aic_outb(aic, DMACNTRL0, INTEN); |
| 1219 | return; |
| 1220 | } |
| 1221 | |
| 1222 | if ((sstat1 & SELTO) != 0) { |
| 1223 | scb = aic->nexus; |
| 1224 | ccb = scb->ccb; |
| 1225 | ccb->ccb_h.status = CAM_SEL_TIMEOUT; |
| 1226 | aic_done(aic, scb); |
| 1227 | while ((sstat1 & BUSFREE) == 0) |
| 1228 | sstat1 = aic_inb(aic, SSTAT1); |
| 1229 | aic->flags |= AIC_BUSFREE_OK; |
| 1230 | } |
| 1231 | } |
| 1232 | |
| 1233 | if ((sstat1 & BUSFREE) != 0) { |
| 1234 | aic_outb(aic, SCSISEQ, 0); |
| 1235 | aic_outb(aic, CLRSINT0, sstat0); |
| 1236 | aic_outb(aic, CLRSINT1, sstat1); |
| 1237 | if ((scb = aic->nexus)) { |
| 1238 | if ((aic->flags & AIC_BUSFREE_OK) == 0) { |
| 1239 | ccb = scb->ccb; |
| 1240 | ccb->ccb_h.status = CAM_UNEXP_BUSFREE; |
| 1241 | aic_done(aic, scb); |
| 1242 | } else if (scb->flags & SCB_DEVICE_RESET) { |
| 1243 | ccb = scb->ccb; |
| 1244 | if (ccb->ccb_h.func_code == XPT_RESET_DEV) { |
| 1245 | xpt_async(AC_SENT_BDR, |
| 1246 | ccb->ccb_h.path, NULL); |
| 1247 | ccb->ccb_h.status |= CAM_REQ_CMP; |
| 1248 | } else |
| 1249 | ccb->ccb_h.status |= CAM_CMD_TIMEOUT; |
| 1250 | aic_done(aic, scb); |
| 1251 | } else if (scb->flags & SCB_SENSE) { |
| 1252 | /* autosense request */ |
| 1253 | aic->flags &= ~AIC_BUSFREE_OK; |
| 1254 | aic->tinfo[scb->target].lubusy &= |
| 1255 | ~(1 << scb->lun); |
| 1256 | aic_select(aic); |
| 1257 | aic_outb(aic, DMACNTRL0, INTEN); |
| 1258 | return; |
| 1259 | } |
| 1260 | } |
| 1261 | aic->flags &= ~AIC_BUSFREE_OK; |
| 1262 | aic->state = AIC_IDLE; |
| 1263 | aic_start(aic); |
| 1264 | aic_outb(aic, DMACNTRL0, INTEN); |
| 1265 | return; |
| 1266 | } |
| 1267 | |
| 1268 | if ((sstat1 & REQINIT) != 0) { |
| 1269 | u_int8_t phase = aic_inb(aic, SCSISIGI) & PH_MASK; |
| 1270 | aic_outb(aic, SCSISIGO, phase); |
| 1271 | aic_outb(aic, CLRSINT1, CLRPHASECHG); |
| 1272 | |
| 1273 | switch (phase) { |
| 1274 | case PH_MSGOUT: |
| 1275 | aic_msgout(aic); |
| 1276 | break; |
| 1277 | case PH_MSGIN: |
| 1278 | aic_msgin(aic); |
| 1279 | break; |
| 1280 | case PH_STAT: |
| 1281 | scb = aic->nexus; |
| 1282 | ccb = scb->ccb; |
| 1283 | aic_outb(aic, DMACNTRL0, 0); |
| 1284 | aic_outb(aic, SXFRCTL0, CHEN|SPIOEN); |
| 1285 | scb->status = aic_inb(aic, SCSIDAT); |
| 1286 | aic_outb(aic, SXFRCTL0, CHEN); |
| 1287 | break; |
| 1288 | case PH_CMD: |
| 1289 | aic_cmd(aic); |
| 1290 | break; |
| 1291 | case PH_DATAIN: |
| 1292 | aic_datain(aic); |
| 1293 | break; |
| 1294 | case PH_DATAOUT: |
| 1295 | aic_dataout(aic); |
| 1296 | break; |
| 1297 | } |
| 1298 | aic->prev_phase = phase; |
| 1299 | aic_outb(aic, DMACNTRL0, INTEN); |
| 1300 | return; |
| 1301 | } |
| 1302 | |
| 1303 | printf("aic_intr: unexpected intr sstat0 %x sstat1 %x\n", |
| 1304 | sstat0, sstat1); |
| 1305 | aic_outb(aic, DMACNTRL0, INTEN); |
| 1306 | } |
| 1307 | |
| 1308 | /* |
| 1309 | * Reset ourselves. |
| 1310 | */ |
| 1311 | static void |
| 1312 | aic_chip_reset(struct aic_softc *aic) |
| 1313 | { |
| 1314 | /* |
| 1315 | * Doc. recommends to clear these two registers before |
| 1316 | * operations commence |
| 1317 | */ |
| 1318 | aic_outb(aic, SCSITEST, 0); |
| 1319 | aic_outb(aic, TEST, 0); |
| 1320 | |
| 1321 | /* Reset SCSI-FIFO and abort any transfers */ |
| 1322 | aic_outb(aic, SXFRCTL0, CHEN|CLRCH|CLRSTCNT); |
| 1323 | |
| 1324 | /* Reset HOST-FIFO */ |
| 1325 | aic_outb(aic, DMACNTRL0, RSTFIFO); |
| 1326 | aic_outb(aic, DMACNTRL1, 0); |
| 1327 | |
| 1328 | /* Disable all selection features */ |
| 1329 | aic_outb(aic, SCSISEQ, 0); |
| 1330 | aic_outb(aic, SXFRCTL1, 0); |
| 1331 | |
| 1332 | /* Disable interrupts */ |
| 1333 | aic_outb(aic, SIMODE0, 0); |
| 1334 | aic_outb(aic, SIMODE1, 0); |
| 1335 | |
| 1336 | /* Clear interrupts */ |
| 1337 | aic_outb(aic, CLRSINT0, 0x7f); |
| 1338 | aic_outb(aic, CLRSINT1, 0xef); |
| 1339 | |
| 1340 | /* Disable synchronous transfers */ |
| 1341 | aic_outb(aic, SCSIRATE, 0); |
| 1342 | |
| 1343 | /* Haven't seen ant errors (yet) */ |
| 1344 | aic_outb(aic, CLRSERR, 0x07); |
| 1345 | |
| 1346 | /* Set our SCSI-ID */ |
| 1347 | aic_outb(aic, SCSIID, aic->initiator << OID_S); |
| 1348 | aic_outb(aic, BRSTCNTRL, EISA_BRST_TIM); |
| 1349 | } |
| 1350 | |
| 1351 | /* |
| 1352 | * Reset the SCSI bus |
| 1353 | */ |
| 1354 | static void |
| 1355 | aic_scsi_reset(struct aic_softc *aic) |
| 1356 | { |
| 1357 | aic_outb(aic, SCSISEQ, SCSIRSTO); |
| 1358 | DELAY(500); |
| 1359 | aic_outb(aic, SCSISEQ, 0); |
| 1360 | DELAY(50); |
| 1361 | } |
| 1362 | |
| 1363 | /* |
| 1364 | * Reset. Abort all pending commands. |
| 1365 | */ |
| 1366 | static void |
| 1367 | aic_reset(struct aic_softc *aic, int initiate_reset) |
| 1368 | { |
| 1369 | struct ccb_hdr *ccb_h; |
| 1370 | |
| 1371 | CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_reset\n")); |
| 1372 | |
| 1373 | if (initiate_reset) |
| 1374 | aic_scsi_reset(aic); |
| 1375 | aic_chip_reset(aic); |
| 1376 | |
| 1377 | xpt_async(AC_BUS_RESET, aic->path, NULL); |
| 1378 | |
| 1379 | while ((ccb_h = TAILQ_FIRST(&aic->pending_ccbs)) != NULL) { |
| 1380 | TAILQ_REMOVE(&aic->pending_ccbs, ccb_h, sim_links.tqe); |
| 1381 | ccb_h->status |= CAM_SCSI_BUS_RESET; |
| 1382 | aic_done(aic, (struct aic_scb *)ccb_h->ccb_scb_ptr); |
| 1383 | } |
| 1384 | |
| 1385 | while ((ccb_h = TAILQ_FIRST(&aic->nexus_ccbs)) != NULL) { |
| 1386 | TAILQ_REMOVE(&aic->nexus_ccbs, ccb_h, sim_links.tqe); |
| 1387 | ccb_h->status |= CAM_SCSI_BUS_RESET; |
| 1388 | aic_done(aic, (struct aic_scb *)ccb_h->ccb_scb_ptr); |
| 1389 | } |
| 1390 | |
| 1391 | if (aic->nexus) { |
| 1392 | ccb_h = &aic->nexus->ccb->ccb_h; |
| 1393 | ccb_h->status |= CAM_SCSI_BUS_RESET; |
| 1394 | aic_done(aic, aic->nexus); |
| 1395 | } |
| 1396 | |
| 1397 | aic->state = AIC_IDLE; |
| 1398 | aic_outb(aic, DMACNTRL0, INTEN); |
| 1399 | } |
| 1400 | |
| 1401 | static void |
| 1402 | aic_init(struct aic_softc *aic) |
| 1403 | { |
| 1404 | struct aic_scb *scb; |
| 1405 | struct aic_tinfo *ti; |
| 1406 | u_int8_t porta, portb; |
| 1407 | int i; |
| 1408 | |
| 1409 | TAILQ_INIT(&aic->pending_ccbs); |
| 1410 | TAILQ_INIT(&aic->nexus_ccbs); |
| 1411 | aic->nexus = NULL; |
| 1412 | aic->state = AIC_IDLE; |
| 1413 | aic->prev_phase = -1; |
| 1414 | aic->flags = 0; |
| 1415 | |
| 1416 | aic_chip_reset(aic); |
| 1417 | aic_scsi_reset(aic); |
| 1418 | |
| 1419 | porta = aic_inb(aic, PORTA); |
| 1420 | portb = aic_inb(aic, PORTB); |
| 1421 | |
| 1422 | aic->initiator = PORTA_ID(porta); |
| 1423 | if (PORTA_PARITY(porta)) |
| 1424 | aic->flags |= AIC_PARITY_ENABLE; |
| 1425 | if (PORTB_DISC(portb)) |
| 1426 | aic->flags |= AIC_DISC_ENABLE; |
| 1427 | if (PORTB_DMA(portb)) |
| 1428 | aic->flags |= AIC_DMA_ENABLE; |
| 1429 | if (aic_inb(aic, REV)) |
| 1430 | aic->flags |= AIC_DWIO_ENABLE; |
| 1431 | |
| 1432 | free_scbs = NULL; |
| 1433 | for (i = 255; i >= 0; i--) { |
| 1434 | scb = &aic->scbs[i]; |
| 1435 | scb->tag = i; |
| 1436 | aic_free_scb(aic, scb); |
| 1437 | } |
| 1438 | |
| 1439 | for (i = 0; i < 8; i++) { |
| 1440 | if (i == aic->initiator) |
| 1441 | continue; |
| 1442 | ti = &aic->tinfo[i]; |
| 1443 | bzero(ti, sizeof(*ti)); |
| 1444 | ti->flags = TINFO_TAG_ENB; |
| 1445 | if (aic->flags & AIC_DISC_ENABLE) |
| 1446 | ti->flags |= TINFO_DISC_ENB; |
| 1447 | ti->user.period = AIC_SYNC_PERIOD; |
| 1448 | ti->user.offset = AIC_SYNC_OFFSET; |
| 1449 | ti->scsirate = 0; |
| 1450 | } |
| 1451 | |
| 1452 | aic_outb(aic, DMACNTRL0, INTEN); |
| 1453 | } |
| 1454 | |
| 1455 | int |
| 1456 | aic_probe(struct aic_softc *aic) |
| 1457 | { |
| 1458 | int i; |
| 1459 | |
| 1460 | /* Remove aic6360 from possible powerdown mode */ |
| 1461 | aic_outb(aic, DMACNTRL0, 0); |
| 1462 | |
| 1463 | #define STSIZE 16 |
| 1464 | aic_outb(aic, DMACNTRL1, 0); /* Reset stack pointer */ |
| 1465 | for (i = 0; i < STSIZE; i++) |
| 1466 | aic_outb(aic, STACK, i); |
| 1467 | |
| 1468 | /* See if we can pull out the same sequence */ |
| 1469 | aic_outb(aic, DMACNTRL1, 0); |
| 1470 | for (i = 0; i < STSIZE && aic_inb(aic, STACK) == i; i++) |
| 1471 | ; |
| 1472 | if (i != STSIZE) |
| 1473 | return (ENXIO); |
| 1474 | #undef STSIZE |
| 1475 | return (0); |
| 1476 | } |
| 1477 | |
| 1478 | int |
| 1479 | aic_attach(struct aic_softc *aic) |
| 1480 | { |
| 1481 | struct cam_devq *devq; |
| 1482 | |
| 1483 | /* |
| 1484 | * Create the device queue for our SIM. |
| 1485 | */ |
| 1486 | devq = cam_simq_alloc(256); |
| 1487 | if (devq == NULL) |
| 1488 | return (ENOMEM); |
| 1489 | |
| 1490 | /* |
| 1491 | * Construct our SIM entry |
| 1492 | */ |
| 1493 | aic->sim = cam_sim_alloc(aic_action, aic_poll, "aic", aic, |
| 1494 | aic->unit, 2, 256, devq); |
| 1495 | if (aic->sim == NULL) { |
| 1496 | cam_simq_free(devq); |
| 1497 | return (ENOMEM); |
| 1498 | } |
| 1499 | |
| 1500 | if (xpt_bus_register(aic->sim, 0) != CAM_SUCCESS) { |
| 1501 | cam_sim_free(aic->sim, /*free_devq*/TRUE); |
| 1502 | return (ENXIO); |
| 1503 | } |
| 1504 | |
| 1505 | if (xpt_create_path(&aic->path, /*periph*/NULL, |
| 1506 | cam_sim_path(aic->sim), CAM_TARGET_WILDCARD, |
| 1507 | CAM_LUN_WILDCARD) != CAM_REQ_CMP) { |
| 1508 | xpt_bus_deregister(cam_sim_path(aic->sim)); |
| 1509 | cam_sim_free(aic->sim, /*free_devq*/TRUE); |
| 1510 | return (ENXIO); |
| 1511 | } |
| 1512 | |
| 1513 | aic_init(aic); |
| 1514 | |
| 1515 | printf("aic%d: %s", aic->unit, |
| 1516 | aic_inb(aic, REV) > 0 ? "aic6360" : "aic6260"); |
| 1517 | if (aic->flags & AIC_DMA_ENABLE) |
| 1518 | printf(", dma"); |
| 1519 | if (aic->flags & AIC_DISC_ENABLE) |
| 1520 | printf(", disconnection"); |
| 1521 | if (aic->flags & AIC_PARITY_ENABLE) |
| 1522 | printf(", parity check"); |
| 1523 | printf("\n"); |
| 1524 | return (0); |
| 1525 | } |
| 1526 | |
| 1527 | int |
| 1528 | aic_detach(struct aic_softc *aic) |
| 1529 | { |
| 1530 | xpt_async(AC_LOST_DEVICE, aic->path, NULL); |
| 1531 | xpt_free_path(aic->path); |
| 1532 | xpt_bus_deregister(cam_sim_path(aic->sim)); |
| 1533 | cam_sim_free(aic->sim, /*free_devq*/TRUE); |
| 1534 | return (0); |
| 1535 | } |