Blame view
drivers/ide/ide-acpi.c
16.5 KB
e3a59b4d9 ACPI support for ... |
1 |
/* |
e3a59b4d9 ACPI support for ... |
2 3 4 5 6 7 8 |
* Provides ACPI support for IDE drives. * * Copyright (C) 2005 Intel Corp. * Copyright (C) 2005 Randy Dunlap * Copyright (C) 2006 SUSE Linux Products GmbH * Copyright (C) 2006 Hannes Reinecke */ |
7b1998116 ACPI / driver cor... |
9 |
#include <linux/acpi.h> |
e3a59b4d9 ACPI support for ... |
10 11 12 13 14 |
#include <linux/ata.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/kernel.h> |
5a0e3ad6a include cleanup: ... |
15 |
#include <linux/slab.h> |
e3a59b4d9 ACPI support for ... |
16 17 |
#include <linux/ide.h> #include <linux/pci.h> |
90494893b ide: workaround s... |
18 |
#include <linux/dmi.h> |
bff7832dd ide/ata: Add modu... |
19 |
#include <linux/module.h> |
e3a59b4d9 ACPI support for ... |
20 |
|
e3a59b4d9 ACPI support for ... |
21 |
#define REGS_PER_GTF 7 |
e3a59b4d9 ACPI support for ... |
22 23 24 25 26 27 28 29 30 31 |
struct GTM_buffer { u32 PIO_speed0; u32 DMA_speed0; u32 PIO_speed1; u32 DMA_speed1; u32 GTM_flags; }; struct ide_acpi_drive_link { |
e3a59b4d9 ACPI support for ... |
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 |
acpi_handle obj_handle; u8 idbuff[512]; }; struct ide_acpi_hwif_link { ide_hwif_t *hwif; acpi_handle obj_handle; struct GTM_buffer gtm; struct ide_acpi_drive_link master; struct ide_acpi_drive_link slave; }; #undef DEBUGGING /* note: adds function name and KERN_DEBUG */ #ifdef DEBUGGING #define DEBPRINT(fmt, args...) \ |
eb63963a5 ide: replace rema... |
48 |
printk(KERN_DEBUG "%s: " fmt, __func__, ## args) |
e3a59b4d9 ACPI support for ... |
49 50 51 |
#else #define DEBPRINT(fmt, args...) do {} while (0) #endif /* DEBUGGING */ |
90ab5ee94 module_param: mak... |
52 |
static bool ide_noacpi; |
1dbfeb4bc ide: add "noacpi"... |
53 54 |
module_param_named(noacpi, ide_noacpi, bool, 0); MODULE_PARM_DESC(noacpi, "disable IDE ACPI support"); |
90ab5ee94 module_param: mak... |
55 |
static bool ide_acpigtf; |
1dbfeb4bc ide: add "noacpi"... |
56 57 |
module_param_named(acpigtf, ide_acpigtf, bool, 0); MODULE_PARM_DESC(acpigtf, "enable IDE ACPI _GTF support"); |
90ab5ee94 module_param: mak... |
58 |
static bool ide_acpionboot; |
1dbfeb4bc ide: add "noacpi"... |
59 60 |
module_param_named(acpionboot, ide_acpionboot, bool, 0); MODULE_PARM_DESC(acpionboot, "call IDE ACPI methods on boot"); |
e3a59b4d9 ACPI support for ... |
61 |
|
90494893b ide: workaround s... |
62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 |
static bool ide_noacpi_psx; static int no_acpi_psx(const struct dmi_system_id *id) { ide_noacpi_psx = true; printk(KERN_NOTICE"%s detected - disable ACPI _PSx. ", id->ident); return 0; } static const struct dmi_system_id ide_acpi_dmi_table[] = { /* Bug 9673. */ /* We should check if this is because ACPI NVS isn't save/restored. */ { .callback = no_acpi_psx, .ident = "HP nx9005", .matches = { DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies Ltd."), DMI_MATCH(DMI_BIOS_VERSION, "KAM1.60") }, }, |
7c48c56e9 IDE: terminate AC... |
82 83 |
{ } /* terminate list */ |
90494893b ide: workaround s... |
84 |
}; |
8b803bd18 ide: sanitize ACP... |
85 |
int ide_acpi_init(void) |
90494893b ide: workaround s... |
86 |
{ |
90494893b ide: workaround s... |
87 88 89 |
dmi_check_system(ide_acpi_dmi_table); return 0; } |
2bf427b25 ide: fix resume f... |
90 91 92 93 |
bool ide_port_acpi(ide_hwif_t *hwif) { return ide_noacpi == 0 && hwif->acpidata; } |
bfecc2b3e ACPI / bind: Move... |
94 95 96 97 98 99 100 101 102 103 |
static acpi_handle acpi_get_child(acpi_handle handle, u64 addr) { struct acpi_device *adev; if (!handle || acpi_bus_get_device(handle, &adev)) return NULL; adev = acpi_find_child_device(adev, addr, false); return adev ? adev->handle : NULL; } |
e3a59b4d9 ACPI support for ... |
104 105 106 107 108 109 110 111 112 113 114 |
/** * ide_get_dev_handle - finds acpi_handle and PCI device.function * @dev: device to locate * @handle: returned acpi_handle for @dev * @pcidevfn: return PCI device.func for @dev * * Returns the ACPI object handle to the corresponding PCI device. * * Returns 0 on success, <0 on error. */ static int ide_get_dev_handle(struct device *dev, acpi_handle *handle, |
439913fff ACPI: replace acp... |
115 |
u64 *pcidevfn) |
e3a59b4d9 ACPI support for ... |
116 117 118 |
{ struct pci_dev *pdev = to_pci_dev(dev); unsigned int bus, devnum, func; |
439913fff ACPI: replace acp... |
119 |
u64 addr; |
e3a59b4d9 ACPI support for ... |
120 |
acpi_handle dev_handle; |
e3a59b4d9 ACPI support for ... |
121 122 123 124 125 126 127 128 |
acpi_status status; struct acpi_device_info *dinfo = NULL; int ret = -ENODEV; bus = pdev->bus->number; devnum = PCI_SLOT(pdev->devfn); func = PCI_FUNC(pdev->devfn); /* ACPI _ADR encoding for PCI bus: */ |
439913fff ACPI: replace acp... |
129 |
addr = (u64)(devnum << 16 | func); |
e3a59b4d9 ACPI support for ... |
130 131 132 |
DEBPRINT("ENTER: pci %02x:%02x.%01x ", bus, devnum, func); |
3a83f9924 ACPI: Eliminate t... |
133 |
dev_handle = ACPI_HANDLE(dev); |
e3a59b4d9 ACPI support for ... |
134 135 136 137 138 |
if (!dev_handle) { DEBPRINT("no acpi handle for device "); goto err; } |
15b8dd53f ACPICA: Major upd... |
139 |
status = acpi_get_object_info(dev_handle, &dinfo); |
e3a59b4d9 ACPI support for ... |
140 141 142 143 144 |
if (ACPI_FAILURE(status)) { DEBPRINT("get_object_info for device failed "); goto err; } |
e3a59b4d9 ACPI support for ... |
145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 |
if (dinfo && (dinfo->valid & ACPI_VALID_ADR) && dinfo->address == addr) { *pcidevfn = addr; *handle = dev_handle; } else { DEBPRINT("get_object_info for device has wrong " " address: %llu, should be %u ", dinfo ? (unsigned long long)dinfo->address : -1ULL, (unsigned int)addr); goto err; } DEBPRINT("for dev=0x%x.%x, addr=0x%llx, *handle=0x%p ", devnum, func, (unsigned long long)addr, *handle); ret = 0; err: kfree(dinfo); return ret; } /** * ide_acpi_hwif_get_handle - Get ACPI object handle for a given hwif * @hwif: device to locate * * Retrieves the object handle for a given hwif. * * Returns handle on success, 0 on error. */ static acpi_handle ide_acpi_hwif_get_handle(ide_hwif_t *hwif) { struct device *dev = hwif->gendev.parent; |
1dcfdf93f drivers/ide/ide-a... |
178 |
acpi_handle uninitialized_var(dev_handle); |
439913fff ACPI: replace acp... |
179 |
u64 pcidevfn; |
e3a59b4d9 ACPI support for ... |
180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 |
acpi_handle chan_handle; int err; DEBPRINT("ENTER: device %s ", hwif->name); if (!dev) { DEBPRINT("no PCI device for %s ", hwif->name); return NULL; } err = ide_get_dev_handle(dev, &dev_handle, &pcidevfn); if (err < 0) { DEBPRINT("ide_get_dev_handle failed (%d) ", err); return NULL; } /* get child objects of dev_handle == channel objects, * + _their_ children == drive objects */ /* channel is hwif->channel */ chan_handle = acpi_get_child(dev_handle, hwif->channel); DEBPRINT("chan adr=%d: handle=0x%p ", hwif->channel, chan_handle); return chan_handle; } /** |
e3a59b4d9 ACPI support for ... |
211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 |
* do_drive_get_GTF - get the drive bootup default taskfile settings * @drive: the drive for which the taskfile settings should be retrieved * @gtf_length: number of bytes of _GTF data returned at @gtf_address * @gtf_address: buffer containing _GTF taskfile arrays * * The _GTF method has no input parameters. * It returns a variable number of register set values (registers * hex 1F1..1F7, taskfiles). * The <variable number> is not known in advance, so have ACPI-CA * allocate the buffer as needed and return it, then free it later. * * The returned @gtf_length and @gtf_address are only valid if the * function return value is 0. */ static int do_drive_get_GTF(ide_drive_t *drive, unsigned int *gtf_length, unsigned long *gtf_address, unsigned long *obj_loc) { acpi_status status; struct acpi_buffer output; union acpi_object *out_obj; |
e3a59b4d9 ACPI support for ... |
232 |
int err = -ENODEV; |
e3a59b4d9 ACPI support for ... |
233 234 235 236 |
*gtf_length = 0; *gtf_address = 0UL; *obj_loc = 0UL; |
e3a59b4d9 ACPI support for ... |
237 |
if (!drive->acpidata->obj_handle) { |
8cd3c6056 ide-acpi: init AC... |
238 239 240 |
DEBPRINT("No ACPI object found for %s ", drive->name); goto out; |
e3a59b4d9 ACPI support for ... |
241 242 243 244 245 246 247 248 249 250 251 252 253 254 |
} /* Setting up output buffer */ output.length = ACPI_ALLOCATE_BUFFER; output.pointer = NULL; /* ACPI-CA sets this; save/free it later */ /* _GTF has no input parameters */ err = -EIO; status = acpi_evaluate_object(drive->acpidata->obj_handle, "_GTF", NULL, &output); if (ACPI_FAILURE(status)) { printk(KERN_DEBUG "%s: Run _GTF error: status = 0x%x ", |
eb63963a5 ide: replace rema... |
255 |
__func__, status); |
e3a59b4d9 ACPI support for ... |
256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 |
goto out; } if (!output.length || !output.pointer) { DEBPRINT("Run _GTF: " "length or ptr is NULL (0x%llx, 0x%p) ", (unsigned long long)output.length, output.pointer); goto out; } out_obj = output.pointer; if (out_obj->type != ACPI_TYPE_BUFFER) { DEBPRINT("Run _GTF: error: " "expected object type of ACPI_TYPE_BUFFER, " "got 0x%x ", out_obj->type); err = -ENOENT; kfree(output.pointer); goto out; } if (!out_obj->buffer.length || !out_obj->buffer.pointer || out_obj->buffer.length % REGS_PER_GTF) { printk(KERN_ERR "%s: unexpected GTF length (%d) or addr (0x%p) ", |
eb63963a5 ide: replace rema... |
284 |
__func__, out_obj->buffer.length, |
e3a59b4d9 ACPI support for ... |
285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 |
out_obj->buffer.pointer); err = -ENOENT; kfree(output.pointer); goto out; } *gtf_length = out_obj->buffer.length; *gtf_address = (unsigned long)out_obj->buffer.pointer; *obj_loc = (unsigned long)out_obj; DEBPRINT("returning gtf_length=%d, gtf_address=0x%lx, obj_loc=0x%lx ", *gtf_length, *gtf_address, *obj_loc); err = 0; out: return err; } /** |
e3a59b4d9 ACPI support for ... |
303 304 305 306 307 308 309 310 311 312 313 314 |
* do_drive_set_taskfiles - write the drive taskfile settings from _GTF * @drive: the drive to which the taskfile command should be sent * @gtf_length: total number of bytes of _GTF taskfiles * @gtf_address: location of _GTF taskfile arrays * * Write {gtf_address, length gtf_length} in groups of * REGS_PER_GTF bytes. */ static int do_drive_set_taskfiles(ide_drive_t *drive, unsigned int gtf_length, unsigned long gtf_address) { |
1f5892a5d ide-acpi: cleanup... |
315 |
int rc = 0, err; |
e3a59b4d9 ACPI support for ... |
316 317 |
int gtf_count = gtf_length / REGS_PER_GTF; int ix; |
e3a59b4d9 ACPI support for ... |
318 |
|
e3a59b4d9 ACPI support for ... |
319 320 321 |
DEBPRINT("total GTF bytes=%u (0x%x), gtf_count=%d, addr=0x%lx ", gtf_length, gtf_length, gtf_count, gtf_address); |
b0b391430 ide-acpi: remove ... |
322 |
/* send all taskfile registers (0x1f1-0x1f7) *in*that*order* */ |
e3a59b4d9 ACPI support for ... |
323 |
for (ix = 0; ix < gtf_count; ix++) { |
b0b391430 ide-acpi: remove ... |
324 |
u8 *gtf = (u8 *)(gtf_address + ix * REGS_PER_GTF); |
22aa4b32a ide: remove ide_t... |
325 |
struct ide_cmd cmd; |
b0b391430 ide-acpi: remove ... |
326 327 328 329 330 331 332 333 334 335 336 337 338 339 |
DEBPRINT("(0x1f1-1f7): " "hex: %02x %02x %02x %02x %02x %02x %02x ", gtf[0], gtf[1], gtf[2], gtf[3], gtf[4], gtf[5], gtf[6]); if (!ide_acpigtf) { DEBPRINT("_GTF execution disabled "); continue; } /* convert GTF to taskfile */ |
22aa4b32a ide: remove ide_t... |
340 |
memset(&cmd, 0, sizeof(cmd)); |
745483f10 ide: simplify 'st... |
341 |
memcpy(&cmd.tf.feature, gtf, REGS_PER_GTF); |
60f85019c ide: replace IDE_... |
342 343 |
cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; |
b0b391430 ide-acpi: remove ... |
344 |
|
22aa4b32a ide: remove ide_t... |
345 |
err = ide_no_data_taskfile(drive, &cmd); |
b0b391430 ide-acpi: remove ... |
346 347 348 349 |
if (err) { printk(KERN_ERR "%s: ide_no_data_taskfile failed: %u ", __func__, err); |
e3a59b4d9 ACPI support for ... |
350 |
rc = err; |
b0b391430 ide-acpi: remove ... |
351 |
} |
e3a59b4d9 ACPI support for ... |
352 |
} |
e3a59b4d9 ACPI support for ... |
353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 |
return rc; } /** * ide_acpi_exec_tfs - get then write drive taskfile settings * @drive: the drive for which the taskfile settings should be * written. * * According to the ACPI spec this should be called after _STM * has been evaluated for the interface. Some ACPI vendors interpret * that as a hard requirement and modify the taskfile according * to the Identify Drive information passed down with _STM. * So one should really make sure to call this only after _STM has * been executed. */ int ide_acpi_exec_tfs(ide_drive_t *drive) { int ret; unsigned int gtf_length; unsigned long gtf_address; unsigned long obj_loc; |
e3a59b4d9 ACPI support for ... |
374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 |
DEBPRINT("call get_GTF, drive=%s port=%d ", drive->name, drive->dn); ret = do_drive_get_GTF(drive, >f_length, >f_address, &obj_loc); if (ret < 0) { DEBPRINT("get_GTF error (%d) ", ret); return ret; } DEBPRINT("call set_taskfiles, drive=%s ", drive->name); ret = do_drive_set_taskfiles(drive, gtf_length, gtf_address); kfree((void *)obj_loc); if (ret < 0) { DEBPRINT("set_taskfiles error (%d) ", ret); } DEBPRINT("ret=%d ", ret); return ret; } |
e3a59b4d9 ACPI support for ... |
399 400 401 402 403 404 405 406 407 408 409 410 411 |
/** * ide_acpi_get_timing - get the channel (controller) timings * @hwif: target IDE interface (channel) * * This function executes the _GTM ACPI method for the target channel. * */ void ide_acpi_get_timing(ide_hwif_t *hwif) { acpi_status status; struct acpi_buffer output; union acpi_object *out_obj; |
e3a59b4d9 ACPI support for ... |
412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 |
/* Setting up output buffer for _GTM */ output.length = ACPI_ALLOCATE_BUFFER; output.pointer = NULL; /* ACPI-CA sets this; save/free it later */ /* _GTM has no input parameters */ status = acpi_evaluate_object(hwif->acpidata->obj_handle, "_GTM", NULL, &output); DEBPRINT("_GTM status: %d, outptr: 0x%p, outlen: 0x%llx ", status, output.pointer, (unsigned long long)output.length); if (ACPI_FAILURE(status)) { DEBPRINT("Run _GTM error: status = 0x%x ", status); return; } if (!output.length || !output.pointer) { DEBPRINT("Run _GTM: length or ptr is NULL (0x%llx, 0x%p) ", (unsigned long long)output.length, output.pointer); kfree(output.pointer); return; } out_obj = output.pointer; if (out_obj->type != ACPI_TYPE_BUFFER) { |
e3a59b4d9 ACPI support for ... |
442 443 444 445 |
DEBPRINT("Run _GTM: error: " "expected object type of ACPI_TYPE_BUFFER, " "got 0x%x ", out_obj->type); |
ba5787323 ide: fix use afte... |
446 |
kfree(output.pointer); |
e3a59b4d9 ACPI support for ... |
447 448 449 450 451 |
return; } if (!out_obj->buffer.length || !out_obj->buffer.pointer || out_obj->buffer.length != sizeof(struct GTM_buffer)) { |
e3a59b4d9 ACPI support for ... |
452 |
printk(KERN_ERR |
1e8f34f7d ide-acpi support ... |
453 454 455 |
"%s: unexpected _GTM length (0x%x)[should be 0x%zx] or " "addr (0x%p) ", |
eb63963a5 ide: replace rema... |
456 |
__func__, out_obj->buffer.length, |
1e8f34f7d ide-acpi support ... |
457 |
sizeof(struct GTM_buffer), out_obj->buffer.pointer); |
ba5787323 ide: fix use afte... |
458 |
kfree(output.pointer); |
e3a59b4d9 ACPI support for ... |
459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 |
return; } memcpy(&hwif->acpidata->gtm, out_obj->buffer.pointer, sizeof(struct GTM_buffer)); DEBPRINT("_GTM info: ptr: 0x%p, len: 0x%x, exp.len: 0x%Zx ", out_obj->buffer.pointer, out_obj->buffer.length, sizeof(struct GTM_buffer)); DEBPRINT("_GTM fields: 0x%x, 0x%x, 0x%x, 0x%x, 0x%x ", hwif->acpidata->gtm.PIO_speed0, hwif->acpidata->gtm.DMA_speed0, hwif->acpidata->gtm.PIO_speed1, hwif->acpidata->gtm.DMA_speed1, hwif->acpidata->gtm.GTM_flags); kfree(output.pointer); } |
e3a59b4d9 ACPI support for ... |
480 481 482 483 484 485 486 487 |
/** * ide_acpi_push_timing - set the channel (controller) timings * @hwif: target IDE interface (channel) * * This function executes the _STM ACPI method for the target channel. * * _STM requires Identify Drive data, which has to passed as an argument. |
4dde4492d ide: make drive->... |
488 |
* Unfortunately drive->id is a mangled version which we can't readily |
e3a59b4d9 ACPI support for ... |
489 490 491 492 493 494 495 496 497 |
* use; hence we'll get the information afresh. */ void ide_acpi_push_timing(ide_hwif_t *hwif) { acpi_status status; struct acpi_object_list input; union acpi_object in_params[3]; struct ide_acpi_drive_link *master = &hwif->acpidata->master; struct ide_acpi_drive_link *slave = &hwif->acpidata->slave; |
e3a59b4d9 ACPI support for ... |
498 499 500 501 502 503 504 505 506 |
/* Give the GTM buffer + drive Identify data to the channel via the * _STM method: */ /* setup input parameters buffer for _STM */ input.count = 3; input.pointer = in_params; in_params[0].type = ACPI_TYPE_BUFFER; in_params[0].buffer.length = sizeof(struct GTM_buffer); in_params[0].buffer.pointer = (u8 *)&hwif->acpidata->gtm; in_params[1].type = ACPI_TYPE_BUFFER; |
0e63a588f ide: fix IDE ACPI... |
507 |
in_params[1].buffer.length = ATA_ID_WORDS * 2; |
e3a59b4d9 ACPI support for ... |
508 509 |
in_params[1].buffer.pointer = (u8 *)&master->idbuff; in_params[2].type = ACPI_TYPE_BUFFER; |
0e63a588f ide: fix IDE ACPI... |
510 |
in_params[2].buffer.length = ATA_ID_WORDS * 2; |
e3a59b4d9 ACPI support for ... |
511 512 513 514 515 516 517 518 519 520 521 522 523 |
in_params[2].buffer.pointer = (u8 *)&slave->idbuff; /* Output buffer: _STM has no output */ status = acpi_evaluate_object(hwif->acpidata->obj_handle, "_STM", &input, NULL); if (ACPI_FAILURE(status)) { DEBPRINT("Run _STM error: status = 0x%x ", status); } DEBPRINT("_STM status: %d ", status); } |
e3a59b4d9 ACPI support for ... |
524 525 |
/** |
5e32132be ide: hook ACPI _P... |
526 527 528 529 530 531 532 533 534 |
* ide_acpi_set_state - set the channel power state * @hwif: target IDE interface * @on: state, on/off * * This function executes the _PS0/_PS3 ACPI method to set the power state. * ACPI spec requires _PS0 when IDE power on and _PS3 when power off */ void ide_acpi_set_state(ide_hwif_t *hwif, int on) { |
2bd24a1cf ide: add port and... |
535 536 |
ide_drive_t *drive; int i; |
5e32132be ide: hook ACPI _P... |
537 |
|
2bf427b25 ide: fix resume f... |
538 |
if (ide_noacpi_psx) |
5e32132be ide: hook ACPI _P... |
539 540 541 542 |
return; DEBPRINT("ENTER: "); |
5e32132be ide: hook ACPI _P... |
543 544 545 |
/* channel first and then drives for power on and verse versa for power off */ if (on) acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0); |
5e32132be ide: hook ACPI _P... |
546 |
|
7ed5b157d ide: add ide_for_... |
547 548 |
ide_port_for_each_present_dev(i, drive, hwif) { if (drive->acpidata->obj_handle) |
5e32132be ide: hook ACPI _P... |
549 |
acpi_bus_set_power(drive->acpidata->obj_handle, |
8ad928d52 ACPI / PM: Use AC... |
550 |
on ? ACPI_STATE_D0 : ACPI_STATE_D3_COLD); |
5e32132be ide: hook ACPI _P... |
551 |
} |
7ed5b157d ide: add ide_for_... |
552 |
|
5e32132be ide: hook ACPI _P... |
553 |
if (!on) |
8ad928d52 ACPI / PM: Use AC... |
554 555 |
acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D3_COLD); |
5e32132be ide: hook ACPI _P... |
556 |
} |
5e32132be ide: hook ACPI _P... |
557 558 |
/** |
8b803bd18 ide: sanitize ACP... |
559 |
* ide_acpi_init_port - initialize the ACPI link for an IDE interface |
e3a59b4d9 ACPI support for ... |
560 561 562 563 564 565 566 567 568 |
* @hwif: target IDE interface (channel) * * The ACPI spec is not quite clear when the drive identify buffer * should be obtained. Calling IDENTIFY DEVICE during shutdown * is not the best of ideas as the drive might already being put to * sleep. And obviously we can't call it during resume. * So we get the information during startup; but this means that * any changes during run-time will be lost after resume. */ |
8b803bd18 ide: sanitize ACP... |
569 |
void ide_acpi_init_port(ide_hwif_t *hwif) |
e3a59b4d9 ACPI support for ... |
570 |
{ |
e3a59b4d9 ACPI support for ... |
571 572 573 574 575 576 577 578 579 580 |
hwif->acpidata = kzalloc(sizeof(struct ide_acpi_hwif_link), GFP_KERNEL); if (!hwif->acpidata) return; hwif->acpidata->obj_handle = ide_acpi_hwif_get_handle(hwif); if (!hwif->acpidata->obj_handle) { DEBPRINT("no ACPI object for %s found ", hwif->name); kfree(hwif->acpidata); hwif->acpidata = NULL; |
e3a59b4d9 ACPI support for ... |
581 |
} |
eafd88a3b ide: factor out d... |
582 583 584 585 586 587 588 589 590 |
} void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ide_drive_t *drive; int i, err; if (hwif->acpidata == NULL) return; |
e3a59b4d9 ACPI support for ... |
591 592 593 594 595 596 |
/* * The ACPI spec mandates that we send information * for both drives, regardless whether they are connected * or not. */ |
5e7f3a466 ide: dynamic allo... |
597 598 |
hwif->devices[0]->acpidata = &hwif->acpidata->master; hwif->devices[1]->acpidata = &hwif->acpidata->slave; |
e3a59b4d9 ACPI support for ... |
599 |
|
8cd3c6056 ide-acpi: init AC... |
600 |
/* get _ADR info for each device */ |
7ed5b157d ide: add ide_for_... |
601 |
ide_port_for_each_present_dev(i, drive, hwif) { |
8cd3c6056 ide-acpi: init AC... |
602 |
acpi_handle dev_handle; |
8cd3c6056 ide-acpi: init AC... |
603 604 605 606 607 608 609 610 611 612 613 614 615 |
DEBPRINT("ENTER: %s at channel#: %d port#: %d ", drive->name, hwif->channel, drive->dn & 1); /* TBD: could also check ACPI object VALID bits */ dev_handle = acpi_get_child(hwif->acpidata->obj_handle, drive->dn & 1); DEBPRINT("drive %s handle 0x%p ", drive->name, dev_handle); drive->acpidata->obj_handle = dev_handle; } |
7ed5b157d ide: add ide_for_... |
616 617 |
/* send IDENTIFY for each device */ ide_port_for_each_present_dev(i, drive, hwif) { |
eafd88a3b ide: factor out d... |
618 619 |
err = taskfile_lib_get_identify(drive, drive->acpidata->idbuff); if (err) |
e3a59b4d9 ACPI support for ... |
620 621 |
DEBPRINT("identify device %s failed (%d) ", |
eafd88a3b ide: factor out d... |
622 |
drive->name, err); |
e3a59b4d9 ACPI support for ... |
623 |
} |
2bf427b25 ide: fix resume f... |
624 |
if (ide_noacpi || ide_acpionboot == 0) { |
e3a59b4d9 ACPI support for ... |
625 626 627 628 |
DEBPRINT("ACPI methods disabled on boot "); return; } |
5e32132be ide: hook ACPI _P... |
629 630 |
/* ACPI _PS0 before _STM */ ide_acpi_set_state(hwif, 1); |
e3a59b4d9 ACPI support for ... |
631 632 633 634 635 |
/* * ACPI requires us to call _STM on startup */ ide_acpi_get_timing(hwif); ide_acpi_push_timing(hwif); |
7ed5b157d ide: add ide_for_... |
636 637 |
ide_port_for_each_present_dev(i, drive, hwif) { ide_acpi_exec_tfs(drive); |
e3a59b4d9 ACPI support for ... |
638 639 |
} } |