1 /* 2 * (MPSAFE) 3 * 4 * Copyright (c) 2009 The DragonFly Project. All rights reserved. 5 * 6 * This code is derived from software contributed to The DragonFly Project 7 * by Matthew Dillon <dillon@backplane.com> 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 3. Neither the name of The DragonFly Project nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific, prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 26 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 27 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 29 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 31 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 33 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include "sili.h" 38 39 static void sili_pm_dummy_done(struct ata_xfer *xa); 40 static void sili_pm_empty_done(struct sili_ccb *ccb); 41 42 /* 43 * This is called for PM attachments and hot-plug insertion events, and 44 * typically not called again until after an unplug/replug sequence. 45 * 46 * We just fall through to the hard-reset code, we don't need to 47 * set up any initial conditions. 48 */ 49 int 50 sili_pm_port_init(struct sili_port *ap, struct ata_port *at) 51 { 52 at->at_probe = ATA_PROBE_NEED_HARD_RESET; 53 return (0); 54 } 55 56 /* 57 * This is called from the port hardreset code. 58 */ 59 int 60 sili_pm_port_probe(struct sili_port *ap, int orig_error) 61 { 62 struct ata_port *at; 63 int error; 64 int i; 65 66 /* 67 * Clean up the port state machine 68 */ 69 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_PMA); 70 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_INIT); 71 if (sili_pwait_clr_to(ap, 5000, SILI_PREG_STATUS, SILI_PREG_CTL_INIT)) { 72 kprintf("%s: PM probe: unable to init port\n", 73 PORTNAME(ap)); 74 return (EBUSY); 75 } 76 if (sili_pwait_set(ap, SILI_PREG_STATUS, SILI_PREG_STATUS_READY)) { 77 kprintf("%s: PM probe: port will not come ready\n", 78 PORTNAME(ap)); 79 return (EBUSY); 80 } 81 82 /* 83 * Issue a soft-reset of target 15 84 */ 85 ap->ap_state = AP_S_NORMAL; 86 sili_pwrite(ap, SILI_PREG_SERR, -1); 87 error = sili_pm_softreset(ap, 15); 88 89 if (error == 0) 90 error = sili_pm_identify(ap); 91 92 /* 93 * Finalize. If the softreset failed. Re-init the port 94 * state machine again so the normal non-PM softreset does 95 * not bog down. 96 */ 97 if (error == 0) { 98 for (i = 0; i < SILI_MAX_PMPORTS; ++i) { 99 at = &ap->ap_ata[i]; 100 at->at_probe = ATA_PROBE_NEED_INIT; 101 at->at_features |= ATA_PORT_F_RESCAN; 102 at->at_features &= ~ATA_PORT_F_READLOG; 103 } 104 ap->ap_type = ATA_PORT_T_PM; 105 return (0); 106 } 107 108 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_PMA); 109 sili_port_init(ap); 110 if (orig_error == 0) { 111 if (sili_pwait_set_to(ap, 5000, SILI_PREG_STATUS, 112 SILI_PREG_STATUS_READY)) { 113 kprintf("%s: PM probe: port will not come ready\n", 114 PORTNAME(ap)); 115 orig_error = EBUSY; 116 } 117 } 118 return (orig_error); 119 120 #if 0 121 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_RESUME); 122 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_PMA); 123 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_INIT); 124 if (sili_pwait_clr_to(ap, 5000, SILI_PREG_STATUS, SILI_PREG_CTL_INIT)) { 125 kprintf("%s: PM probe: unable to init port\n", 126 PORTNAME(ap)); 127 orig_error = EBUSY; 128 } 129 if (sili_pwait_set(ap, SILI_PREG_STATUS, SILI_PREG_STATUS_READY)) { 130 kprintf("%s: PM probe: port will not come ready\n", 131 PORTNAME(ap)); 132 orig_error = EBUSY; 133 } 134 kprintf("ORIG ERROR %d\n", orig_error); 135 if (orig_error) 136 return (orig_error); 137 138 /* 139 * If we originally detected a device redo the device reset to 140 * try to clear the mess. 141 */ 142 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_DEVRESET); 143 if (sili_pwait_clr(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_DEVRESET)) { 144 kprintf("%s: PM probe: unable to reset\n", PORTNAME(ap)); 145 orig_error = EBUSY; 146 } 147 if (sili_pwait_set(ap, SILI_PREG_STATUS, SILI_PREG_STATUS_READY)) { 148 kprintf("%s: PM probe: port will not come ready\n", 149 PORTNAME(ap)); 150 orig_error = EBUSY; 151 } 152 return (orig_error); 153 #endif 154 } 155 156 /* 157 * Identify the port multiplier 158 */ 159 int 160 sili_pm_identify(struct sili_port *ap) 161 { 162 u_int32_t chipid; 163 u_int32_t rev; 164 u_int32_t nports; 165 u_int32_t data1; 166 u_int32_t data2; 167 int has_dummy_port; 168 169 ap->ap_probe = ATA_PROBE_FAILED; 170 if (sili_pm_read(ap, 15, 0, &chipid)) 171 goto err; 172 if (sili_pm_read(ap, 15, 1, &rev)) 173 goto err; 174 if (sili_pm_read(ap, 15, 2, &nports)) 175 goto err; 176 nports &= 0x0000000F; /* only the low 4 bits */ 177 ap->ap_probe = ATA_PROBE_GOOD; 178 179 /* 180 * Ignore fake port on PMs which have it. We can probe it but the 181 * softreset will probably fail. 182 */ 183 switch(chipid) { 184 case 0x37261095: 185 has_dummy_port = 1; 186 break; 187 default: 188 has_dummy_port = 0; 189 break; 190 } 191 if (has_dummy_port) { 192 if (nports > 1) 193 --nports; 194 } 195 196 kprintf("%s: Port multiplier: chip=%08x rev=0x%pb%i nports=%d\n", 197 PORTNAME(ap), 198 chipid, 199 SATA_PFMT_PM_REV, rev, 200 nports); 201 if (has_dummy_port) { 202 kprintf("%s: Port multiplier: Ignoring dummy port #%d\n", 203 PORTNAME(ap), nports); 204 } 205 ap->ap_pmcount = nports; 206 207 if (sili_pm_read(ap, 15, SATA_PMREG_FEA, &data1)) { 208 kprintf("%s: Port multiplier: Warning, " 209 "cannot read feature register\n", PORTNAME(ap)); 210 } else { 211 kprintf("%s: Port multiplier features: 0x%pb%i\n", 212 PORTNAME(ap), SATA_PFMT_PM_FEA, data1); 213 } 214 if (sili_pm_read(ap, 15, SATA_PMREG_FEAEN, &data2) == 0) { 215 kprintf("%s: Port multiplier defaults: 0x%pb%i\n", 216 PORTNAME(ap), SATA_PFMT_PM_FEA, data2); 217 } 218 219 /* 220 * Turn on async notification if we support and the PM supports it. 221 * This allows the PM to forward async notification events to us and 222 * it will also generate an event for target 15 for hot-plug events 223 * (or is supposed to anyway). 224 */ 225 if ((ap->ap_sc->sc_flags & SILI_F_SSNTF) && 226 (data1 & SATA_PMFEA_ASYNCNOTIFY)) { 227 u_int32_t serr_bits = SATA_PM_SERR_DIAG_N | 228 SATA_PM_SERR_DIAG_X; 229 data2 |= SATA_PMFEA_ASYNCNOTIFY; 230 if (sili_pm_write(ap, 15, SATA_PMREG_FEAEN, data2)) { 231 kprintf("%s: Port multiplier: AsyncNotify cannot be " 232 "enabled\n", PORTNAME(ap)); 233 } else if (sili_pm_write(ap, 15, SATA_PMREG_EEENA, serr_bits)) { 234 kprintf("%s: Port mulltiplier: AsyncNotify unable " 235 "to enable error info bits\n", PORTNAME(ap)); 236 } else { 237 kprintf("%s: Port multiplier: AsyncNotify enabled\n", 238 PORTNAME(ap)); 239 } 240 } 241 242 return (0); 243 err: 244 kprintf("%s: Port multiplier cannot be identified\n", PORTNAME(ap)); 245 return (EIO); 246 } 247 248 /* 249 * Do a COMRESET sequence on the target behind a port multiplier. 250 * 251 * If hard is 2 we also cycle the phy on the target. 252 * 253 * This must be done prior to any softreset or probe attempts on 254 * targets behind the port multiplier. 255 * 256 * Returns 0 on success or an error. 257 */ 258 int 259 sili_pm_hardreset(struct sili_port *ap, int target, int hard) 260 { 261 struct ata_port *at; 262 u_int32_t data; 263 int loop; 264 int error = EIO; 265 266 at = &ap->ap_ata[target]; 267 268 /* 269 * Ensure that no other commands are pending. Our HW reset of 270 * the PM target can skewer the port overall! 271 */ 272 sili_exclusive_access(ap); 273 274 /* 275 * Turn off power management and kill the phy on the target 276 * if requested. Hold state for 10ms. 277 */ 278 data = SATA_PM_SCTL_IPM_DISABLED; 279 #if 0 280 if (hard == 2) 281 data |= SATA_PM_SCTL_DET_DISABLE; 282 #endif 283 if (sili_pm_write(ap, target, SATA_PMREG_SERR, -1)) 284 goto err; 285 if (sili_pm_write(ap, target, SATA_PMREG_SCTL, data)) 286 goto err; 287 sili_os_sleep(10); 288 289 /* 290 * Start transmitting COMRESET. COMRESET must be sent for at 291 * least 1ms. 292 * 293 * It takes about 100ms for the DET logic to settle down, 294 * from trial and error testing. If this is too short 295 * the softreset code will fail. 296 * 297 * It is very important to allow the logic to settle before 298 * we issue any additional commands or the target will interfere 299 * with our PM commands. 300 */ 301 at->at_probe = ATA_PROBE_FAILED; 302 at->at_type = ATA_PORT_T_NONE; 303 data = SATA_PM_SCTL_IPM_DISABLED | SATA_PM_SCTL_DET_INIT; 304 if (SiliForceGen1 & (1 << ap->ap_num)) { 305 kprintf("%s.%d: Force 1.5GBits\n", PORTNAME(ap), target); 306 data |= SATA_PM_SCTL_SPD_GEN1; 307 } else { 308 data |= SATA_PM_SCTL_SPD_ANY; 309 } 310 if (sili_pm_write(ap, target, SATA_PMREG_SCTL, data)) 311 goto err; 312 sili_os_sleep(100); 313 314 if (sili_pm_phy_status(ap, target, &data)) { 315 kprintf("%s: (A)Cannot clear phy status\n", 316 ATANAME(ap ,at)); 317 } 318 319 /* 320 * Flush any status, then clear DET to initiate negotiation. 321 * 322 * It is very important to allow the negotiation to settle before 323 * we issue any additional commands or the target will interfere 324 * with our PM commands. 325 */ 326 sili_pm_write(ap, target, SATA_PMREG_SERR, -1); 327 data = SATA_PM_SCTL_IPM_DISABLED | SATA_PM_SCTL_DET_NONE; 328 if (sili_pm_write(ap, target, SATA_PMREG_SCTL, data)) 329 goto err; 330 sili_os_sleep(100); 331 332 /* 333 * Try to determine if there is a device on the port. 334 * 335 * Give the device 3/10 second to at least be detected. 336 * If we fail clear any pending status since we may have 337 * cycled the phy and probably caused another PRCS interrupt. 338 */ 339 for (loop = 3; loop; --loop) { 340 if (sili_pm_read(ap, target, SATA_PMREG_SSTS, &data)) 341 goto err; 342 if (data & SATA_PM_SSTS_DET) 343 break; 344 sili_os_sleep(100); 345 } 346 if (loop == 0) { 347 kprintf("%s.%d: Port appears to be unplugged\n", 348 PORTNAME(ap), target); 349 error = ENODEV; 350 goto err; 351 } 352 353 /* 354 * There is something on the port. Give the device 3 seconds 355 * to fully negotiate. 356 */ 357 for (loop = 30; loop; --loop) { 358 if (sili_pm_read(ap, target, SATA_PMREG_SSTS, &data)) 359 goto err; 360 if ((data & SATA_PM_SSTS_DET) == SATA_PM_SSTS_DET_DEV) 361 break; 362 sili_os_sleep(100); 363 } 364 365 /* 366 * Device not detected 367 */ 368 if (loop == 0) { 369 kprintf("%s: Device may be powered down\n", 370 PORTNAME(ap)); 371 error = ENODEV; 372 goto err; 373 } 374 375 /* 376 * Device detected. 377 * 378 * Wait 200ms to give the device time to send its first D2H FIS. 379 * If we do not wait long enough our softreset sequence can collide 380 * with the end of the device's reset sequence and brick the port. 381 * Some devices may need longer and we handle those cases in the 382 * pm softreset code. 383 * 384 * XXX Looks like we have to wait a lot longer. If the Sili chip's 385 * softreset fails due to a collision with the D2H FIS or the 386 * unbusying it bricks the port. 387 * 388 * XXX how do we poll that particular target's BSY status via the 389 * PM? 390 */ 391 kprintf("%s.%d: PM Device detected ssts=%08x\n", 392 PORTNAME(ap), target, data); 393 sili_os_sleep(5000); 394 395 error = 0; 396 err: 397 at->at_probe = error ? ATA_PROBE_FAILED : ATA_PROBE_NEED_SOFT_RESET; 398 return (error); 399 } 400 401 /* 402 * SILI soft reset through port multiplier. 403 * 404 * This function generates a soft reset through the port multiplier, 405 * keeping port communications intact. 406 * 407 * The SII chip will do the whole mess for us. However, the command 408 * can brick the port if the target is still busy from the previous 409 * COMRESET. 410 */ 411 int 412 sili_pm_softreset(struct sili_port *ap, int target) 413 { 414 struct ata_port *at; 415 struct sili_ccb *ccb; 416 struct sili_prb *prb; 417 int error; 418 u_int32_t data; 419 u_int32_t sig; 420 int timeout; 421 422 error = EIO; 423 at = &ap->ap_ata[target]; 424 425 kprintf("%s: PM softreset\n", ATANAME(ap, at)); 426 427 /* 428 * Prep the special soft-reset SII command. 429 */ 430 ccb = sili_get_err_ccb(ap); 431 ccb->ccb_done = sili_pm_empty_done; 432 ccb->ccb_xa.flags = ATA_F_POLL | ATA_F_EXCLUSIVE | ATA_F_AUTOSENSE; 433 ccb->ccb_xa.complete = sili_pm_dummy_done; 434 ccb->ccb_xa.at = at; 435 436 prb = ccb->ccb_prb; 437 bzero(&prb->prb_h2d, sizeof(prb->prb_h2d)); 438 prb->prb_h2d.flags = at->at_target; 439 prb->prb_control = SILI_PRB_CTRL_SOFTRESET; 440 prb->prb_override = 0; 441 prb->prb_xfer_count = 0; 442 443 ccb->ccb_xa.state = ATA_S_PENDING; 444 445 timeout = (target == 15) ? 1000 : 8000; 446 447 /* 448 * NOTE: Must use sili_quick_timeout() because we hold the err_ccb 449 */ 450 if (sili_poll(ccb, timeout, sili_quick_timeout) != ATA_S_COMPLETE) { 451 if (target != 15) { 452 kprintf("%s: (PM) Softreset FIS failed\n", 453 ATANAME(ap, at)); 454 } 455 sili_put_err_ccb(ccb); 456 goto err; 457 } 458 459 sig = (prb->prb_d2h.lba_high << 24) | 460 (prb->prb_d2h.lba_mid << 16) | 461 (prb->prb_d2h.lba_low << 8) | 462 (prb->prb_d2h.sector_count); 463 kprintf("%s: PM SOFTRESET SIGNATURE %08x\n", ATANAME(ap, at), sig); 464 465 sili_put_err_ccb(ccb); 466 467 /* 468 * Clear the phy status of the target so we can get a new event. 469 * 470 * Target 15 is the PM itself and these registers have 471 * different meanings. 472 */ 473 if (target != 15) { 474 if (sili_pm_phy_status(ap, target, &data)) { 475 kprintf("%s: (C)Cannot clear phy status\n", 476 ATANAME(ap ,at)); 477 } 478 sili_pm_write(ap, target, SATA_PMREG_SERR, -1); 479 } 480 481 /* 482 * If the softreset is trying to clear a BSY condition after a 483 * normal portreset we assign the port type. 484 * 485 * If the softreset is being run first as part of the ccb error 486 * processing code then report if the device signature changed 487 * unexpectedly. 488 */ 489 if (at->at_type == ATA_PORT_T_NONE) { 490 at->at_type = sili_port_signature(ap, at, sig); 491 } else { 492 if (sili_port_signature(ap, at, sig) != at->at_type) { 493 kprintf("%s: device signature unexpectedly " 494 "changed\n", ATANAME(ap, at)); 495 error = EBUSY; /* XXX */ 496 } 497 } 498 error = 0; 499 err: 500 /* 501 * Clear error status so we can detect removal. 502 * 503 * Target 15 is the PM itself and these registers have 504 * different meanings. 505 */ 506 kprintf("%s: PM softreset done error %d\n", ATANAME(ap, at), error); 507 if (error == 0 && target != 15) { 508 if (sili_pm_write(ap, target, SATA_PMREG_SERR, -1)) { 509 kprintf("%s: sili_pm_softreset unable to clear SERR\n", 510 ATANAME(ap, at)); 511 ap->ap_flags &= ~AP_F_IGNORE_IFS; 512 } 513 } 514 515 at->at_probe = error ? ATA_PROBE_FAILED : ATA_PROBE_NEED_IDENT; 516 return (error); 517 } 518 519 520 /* 521 * Return the phy status for a target behind a port multiplier and 522 * reset SATA_PMREG_SERR. 523 * 524 * Returned bits follow SILI_PREG_SSTS bits. The SILI_PREG_SSTS_SPD 525 * bits can be used to determine the link speed and will be 0 if there 526 * is no link. 527 * 528 * 0 is returned if any communications error occurs. 529 */ 530 int 531 sili_pm_phy_status(struct sili_port *ap, int target, u_int32_t *datap) 532 { 533 int error; 534 535 error = sili_pm_read(ap, target, SATA_PMREG_SSTS, datap); 536 if (error == 0) 537 error = sili_pm_write(ap, target, SATA_PMREG_SERR, -1); 538 if (error) 539 *datap = 0; 540 return(error); 541 } 542 543 int 544 sili_pm_set_feature(struct sili_port *ap, int feature, int enable) 545 { 546 struct ata_xfer *xa; 547 int error; 548 549 xa = sili_ata_get_xfer(ap, &ap->ap_ata[15]); 550 551 xa->fis->type = ATA_FIS_TYPE_H2D; 552 xa->fis->flags = ATA_H2D_FLAGS_CMD | 15; 553 xa->fis->command = enable ? ATA_C_SATA_FEATURE_ENA : 554 ATA_C_SATA_FEATURE_DIS; 555 xa->fis->sector_count = feature; 556 xa->fis->control = ATA_FIS_CONTROL_4BIT; 557 558 xa->complete = sili_pm_dummy_done; 559 xa->datalen = 0; 560 xa->flags = ATA_F_POLL | ATA_F_EXCLUSIVE; 561 xa->timeout = 1000; 562 563 if (sili_ata_cmd(xa) == ATA_S_COMPLETE) 564 error = 0; 565 else 566 error = EIO; 567 sili_ata_put_xfer(xa); 568 return(error); 569 } 570 571 /* 572 * Check that a target is still good. 573 */ 574 void 575 sili_pm_check_good(struct sili_port *ap, int target) 576 { 577 struct ata_port *at; 578 u_int32_t data; 579 580 /* 581 * It looks like we might have to read the EINFO register 582 * to allow the PM to generate a new event. 583 */ 584 if (sili_pm_read(ap, 15, SATA_PMREG_EINFO, &data)) { 585 kprintf("%s: Port multiplier EINFO could not be read\n", 586 PORTNAME(ap)); 587 } 588 589 if (sili_pm_write(ap, target, SATA_PMREG_SERR, -1)) { 590 kprintf("%s: Port multiplier: SERR could not be cleared\n", 591 PORTNAME(ap)); 592 } 593 594 if (target == CAM_TARGET_WILDCARD || target >= ap->ap_pmcount) 595 return; 596 at = &ap->ap_ata[target]; 597 598 /* 599 * If the device needs an init or hard reset also make sure the 600 * PHY is turned on. 601 */ 602 if (at->at_probe <= ATA_PROBE_NEED_HARD_RESET) { 603 /*kprintf("%s DOHARD\n", ATANAME(ap, at));*/ 604 sili_pm_hardreset(ap, target, 1); 605 } 606 607 /* 608 * Read the detect status 609 */ 610 if (sili_pm_read(ap, target, SATA_PMREG_SSTS, &data)) { 611 kprintf("%s: Unable to access PM SSTS register target %d\n", 612 PORTNAME(ap), target); 613 return; 614 } 615 if ((data & SATA_PM_SSTS_DET) != SATA_PM_SSTS_DET_DEV) { 616 /*kprintf("%s: DETECT %08x\n", ATANAME(ap, at), data);*/ 617 if (at->at_probe != ATA_PROBE_FAILED) { 618 at->at_probe = ATA_PROBE_FAILED; 619 at->at_type = ATA_PORT_T_NONE; 620 at->at_features |= ATA_PORT_F_RESCAN; 621 kprintf("%s: HOTPLUG (PM) - Device removed\n", 622 ATANAME(ap, at)); 623 } 624 } else { 625 if (at->at_probe == ATA_PROBE_FAILED) { 626 at->at_probe = ATA_PROBE_NEED_HARD_RESET; 627 at->at_features |= ATA_PORT_F_RESCAN; 628 kprintf("%s: HOTPLUG (PM) - Device inserted\n", 629 ATANAME(ap, at)); 630 } 631 } 632 } 633 634 /* 635 * Read a PM register 636 */ 637 int 638 sili_pm_read(struct sili_port *ap, int target, int which, u_int32_t *datap) 639 { 640 struct ata_xfer *xa; 641 int error; 642 643 xa = sili_ata_get_xfer(ap, &ap->ap_ata[15]); 644 645 xa->fis->type = ATA_FIS_TYPE_H2D; 646 xa->fis->flags = ATA_H2D_FLAGS_CMD | 15; 647 xa->fis->command = ATA_C_READ_PM; 648 xa->fis->features = which; 649 xa->fis->device = target | ATA_H2D_DEVICE_LBA; 650 xa->fis->control = ATA_FIS_CONTROL_4BIT; 651 652 xa->complete = sili_pm_dummy_done; 653 xa->datalen = 0; 654 xa->flags = ATA_F_POLL | ATA_F_AUTOSENSE; 655 xa->timeout = 1000; 656 657 if (sili_ata_cmd(xa) == ATA_S_COMPLETE) { 658 *datap = xa->rfis->sector_count | (xa->rfis->lba_low << 8) | 659 (xa->rfis->lba_mid << 16) | (xa->rfis->lba_high << 24); 660 error = 0; 661 } else { 662 kprintf("%s.%d pm_read SCA[%d] failed\n", 663 PORTNAME(ap), target, which); 664 *datap = 0; 665 error = EIO; 666 } 667 sili_ata_put_xfer(xa); 668 return (error); 669 } 670 671 /* 672 * Write a PM register 673 */ 674 int 675 sili_pm_write(struct sili_port *ap, int target, int which, u_int32_t data) 676 { 677 struct ata_xfer *xa; 678 int error; 679 680 xa = sili_ata_get_xfer(ap, &ap->ap_ata[15]); 681 682 xa->fis->type = ATA_FIS_TYPE_H2D; 683 xa->fis->flags = ATA_H2D_FLAGS_CMD | 15; 684 xa->fis->command = ATA_C_WRITE_PM; 685 xa->fis->features = which; 686 xa->fis->device = target | ATA_H2D_DEVICE_LBA; 687 xa->fis->sector_count = (u_int8_t)data; 688 xa->fis->lba_low = (u_int8_t)(data >> 8); 689 xa->fis->lba_mid = (u_int8_t)(data >> 16); 690 xa->fis->lba_high = (u_int8_t)(data >> 24); 691 xa->fis->control = ATA_FIS_CONTROL_4BIT; 692 693 xa->complete = sili_pm_dummy_done; 694 xa->datalen = 0; 695 xa->flags = ATA_F_POLL | ATA_F_EXCLUSIVE; 696 xa->timeout = 1000; 697 698 if (sili_ata_cmd(xa) == ATA_S_COMPLETE) 699 error = 0; 700 else 701 error = EIO; 702 sili_ata_put_xfer(xa); 703 return(error); 704 } 705 706 /* 707 * Dummy done callback for xa. 708 */ 709 static void 710 sili_pm_dummy_done(struct ata_xfer *xa) 711 { 712 } 713 714 static void 715 sili_pm_empty_done(struct sili_ccb *ccb) 716 { 717 } 718