Commit | Line | Data |
---|---|---|
e3a59b4d | 1 | /* |
e3a59b4d HR |
2 | * Provides ACPI support for IDE drives. |
3 | * | |
4 | * Copyright (C) 2005 Intel Corp. | |
5 | * Copyright (C) 2005 Randy Dunlap | |
6 | * Copyright (C) 2006 SUSE Linux Products GmbH | |
7 | * Copyright (C) 2006 Hannes Reinecke | |
8 | */ | |
9 | ||
10 | #include <linux/ata.h> | |
11 | #include <linux/delay.h> | |
12 | #include <linux/device.h> | |
13 | #include <linux/errno.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <acpi/acpi.h> | |
16 | #include <linux/ide.h> | |
17 | #include <linux/pci.h> | |
90494893 | 18 | #include <linux/dmi.h> |
e3a59b4d HR |
19 | |
20 | #include <acpi/acpi_bus.h> | |
e3a59b4d HR |
21 | |
22 | #define REGS_PER_GTF 7 | |
23 | struct taskfile_array { | |
24 | u8 tfa[REGS_PER_GTF]; /* regs. 0x1f1 - 0x1f7 */ | |
25 | }; | |
26 | ||
27 | struct GTM_buffer { | |
28 | u32 PIO_speed0; | |
29 | u32 DMA_speed0; | |
30 | u32 PIO_speed1; | |
31 | u32 DMA_speed1; | |
32 | u32 GTM_flags; | |
33 | }; | |
34 | ||
35 | struct ide_acpi_drive_link { | |
e3a59b4d HR |
36 | acpi_handle obj_handle; |
37 | u8 idbuff[512]; | |
38 | }; | |
39 | ||
40 | struct ide_acpi_hwif_link { | |
41 | ide_hwif_t *hwif; | |
42 | acpi_handle obj_handle; | |
43 | struct GTM_buffer gtm; | |
44 | struct ide_acpi_drive_link master; | |
45 | struct ide_acpi_drive_link slave; | |
46 | }; | |
47 | ||
48 | #undef DEBUGGING | |
49 | /* note: adds function name and KERN_DEBUG */ | |
50 | #ifdef DEBUGGING | |
51 | #define DEBPRINT(fmt, args...) \ | |
eb63963a | 52 | printk(KERN_DEBUG "%s: " fmt, __func__, ## args) |
e3a59b4d HR |
53 | #else |
54 | #define DEBPRINT(fmt, args...) do {} while (0) | |
55 | #endif /* DEBUGGING */ | |
56 | ||
931ee0dc | 57 | static int ide_noacpi; |
1dbfeb4b BZ |
58 | module_param_named(noacpi, ide_noacpi, bool, 0); |
59 | MODULE_PARM_DESC(noacpi, "disable IDE ACPI support"); | |
60 | ||
931ee0dc | 61 | static int ide_acpigtf; |
1dbfeb4b BZ |
62 | module_param_named(acpigtf, ide_acpigtf, bool, 0); |
63 | MODULE_PARM_DESC(acpigtf, "enable IDE ACPI _GTF support"); | |
64 | ||
931ee0dc | 65 | static int ide_acpionboot; |
1dbfeb4b BZ |
66 | module_param_named(acpionboot, ide_acpionboot, bool, 0); |
67 | MODULE_PARM_DESC(acpionboot, "call IDE ACPI methods on boot"); | |
e3a59b4d | 68 | |
90494893 SL |
69 | static bool ide_noacpi_psx; |
70 | static int no_acpi_psx(const struct dmi_system_id *id) | |
71 | { | |
72 | ide_noacpi_psx = true; | |
73 | printk(KERN_NOTICE"%s detected - disable ACPI _PSx.\n", id->ident); | |
74 | return 0; | |
75 | } | |
76 | ||
77 | static const struct dmi_system_id ide_acpi_dmi_table[] = { | |
78 | /* Bug 9673. */ | |
79 | /* We should check if this is because ACPI NVS isn't save/restored. */ | |
80 | { | |
81 | .callback = no_acpi_psx, | |
82 | .ident = "HP nx9005", | |
83 | .matches = { | |
84 | DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies Ltd."), | |
85 | DMI_MATCH(DMI_BIOS_VERSION, "KAM1.60") | |
86 | }, | |
87 | }, | |
7c48c56e JG |
88 | |
89 | { } /* terminate list */ | |
90494893 SL |
90 | }; |
91 | ||
92 | static int ide_acpi_blacklist(void) | |
93 | { | |
94 | static int done; | |
95 | if (done) | |
96 | return 0; | |
97 | done = 1; | |
98 | dmi_check_system(ide_acpi_dmi_table); | |
99 | return 0; | |
100 | } | |
101 | ||
e3a59b4d HR |
102 | /** |
103 | * ide_get_dev_handle - finds acpi_handle and PCI device.function | |
104 | * @dev: device to locate | |
105 | * @handle: returned acpi_handle for @dev | |
106 | * @pcidevfn: return PCI device.func for @dev | |
107 | * | |
108 | * Returns the ACPI object handle to the corresponding PCI device. | |
109 | * | |
110 | * Returns 0 on success, <0 on error. | |
111 | */ | |
112 | static int ide_get_dev_handle(struct device *dev, acpi_handle *handle, | |
113 | acpi_integer *pcidevfn) | |
114 | { | |
115 | struct pci_dev *pdev = to_pci_dev(dev); | |
116 | unsigned int bus, devnum, func; | |
117 | acpi_integer addr; | |
118 | acpi_handle dev_handle; | |
119 | struct acpi_buffer buffer = {.length = ACPI_ALLOCATE_BUFFER, | |
120 | .pointer = NULL}; | |
121 | acpi_status status; | |
122 | struct acpi_device_info *dinfo = NULL; | |
123 | int ret = -ENODEV; | |
124 | ||
125 | bus = pdev->bus->number; | |
126 | devnum = PCI_SLOT(pdev->devfn); | |
127 | func = PCI_FUNC(pdev->devfn); | |
128 | /* ACPI _ADR encoding for PCI bus: */ | |
129 | addr = (acpi_integer)(devnum << 16 | func); | |
130 | ||
131 | DEBPRINT("ENTER: pci %02x:%02x.%01x\n", bus, devnum, func); | |
132 | ||
133 | dev_handle = DEVICE_ACPI_HANDLE(dev); | |
134 | if (!dev_handle) { | |
135 | DEBPRINT("no acpi handle for device\n"); | |
136 | goto err; | |
137 | } | |
138 | ||
139 | status = acpi_get_object_info(dev_handle, &buffer); | |
140 | if (ACPI_FAILURE(status)) { | |
141 | DEBPRINT("get_object_info for device failed\n"); | |
142 | goto err; | |
143 | } | |
144 | dinfo = buffer.pointer; | |
145 | if (dinfo && (dinfo->valid & ACPI_VALID_ADR) && | |
146 | dinfo->address == addr) { | |
147 | *pcidevfn = addr; | |
148 | *handle = dev_handle; | |
149 | } else { | |
150 | DEBPRINT("get_object_info for device has wrong " | |
151 | " address: %llu, should be %u\n", | |
152 | dinfo ? (unsigned long long)dinfo->address : -1ULL, | |
153 | (unsigned int)addr); | |
154 | goto err; | |
155 | } | |
156 | ||
157 | DEBPRINT("for dev=0x%x.%x, addr=0x%llx, *handle=0x%p\n", | |
158 | devnum, func, (unsigned long long)addr, *handle); | |
159 | ret = 0; | |
160 | err: | |
161 | kfree(dinfo); | |
162 | return ret; | |
163 | } | |
164 | ||
165 | /** | |
166 | * ide_acpi_hwif_get_handle - Get ACPI object handle for a given hwif | |
167 | * @hwif: device to locate | |
168 | * | |
169 | * Retrieves the object handle for a given hwif. | |
170 | * | |
171 | * Returns handle on success, 0 on error. | |
172 | */ | |
173 | static acpi_handle ide_acpi_hwif_get_handle(ide_hwif_t *hwif) | |
174 | { | |
175 | struct device *dev = hwif->gendev.parent; | |
1dcfdf93 | 176 | acpi_handle uninitialized_var(dev_handle); |
e3a59b4d HR |
177 | acpi_integer pcidevfn; |
178 | acpi_handle chan_handle; | |
179 | int err; | |
180 | ||
181 | DEBPRINT("ENTER: device %s\n", hwif->name); | |
182 | ||
183 | if (!dev) { | |
184 | DEBPRINT("no PCI device for %s\n", hwif->name); | |
185 | return NULL; | |
186 | } | |
187 | ||
188 | err = ide_get_dev_handle(dev, &dev_handle, &pcidevfn); | |
189 | if (err < 0) { | |
190 | DEBPRINT("ide_get_dev_handle failed (%d)\n", err); | |
191 | return NULL; | |
192 | } | |
193 | ||
194 | /* get child objects of dev_handle == channel objects, | |
195 | * + _their_ children == drive objects */ | |
196 | /* channel is hwif->channel */ | |
197 | chan_handle = acpi_get_child(dev_handle, hwif->channel); | |
198 | DEBPRINT("chan adr=%d: handle=0x%p\n", | |
199 | hwif->channel, chan_handle); | |
200 | ||
201 | return chan_handle; | |
202 | } | |
203 | ||
204 | /** | |
205 | * ide_acpi_drive_get_handle - Get ACPI object handle for a given drive | |
206 | * @drive: device to locate | |
207 | * | |
208 | * Retrieves the object handle of a given drive. According to the ACPI | |
209 | * spec the drive is a child of the hwif. | |
210 | * | |
211 | * Returns handle on success, 0 on error. | |
212 | */ | |
213 | static acpi_handle ide_acpi_drive_get_handle(ide_drive_t *drive) | |
214 | { | |
898ec223 | 215 | ide_hwif_t *hwif = drive->hwif; |
e3a59b4d HR |
216 | int port; |
217 | acpi_handle drive_handle; | |
218 | ||
219 | if (!hwif->acpidata) | |
220 | return NULL; | |
221 | ||
222 | if (!hwif->acpidata->obj_handle) | |
223 | return NULL; | |
224 | ||
225 | port = hwif->channel ? drive->dn - 2: drive->dn; | |
226 | ||
227 | DEBPRINT("ENTER: %s at channel#: %d port#: %d\n", | |
228 | drive->name, hwif->channel, port); | |
229 | ||
230 | ||
231 | /* TBD: could also check ACPI object VALID bits */ | |
232 | drive_handle = acpi_get_child(hwif->acpidata->obj_handle, port); | |
233 | DEBPRINT("drive %s handle 0x%p\n", drive->name, drive_handle); | |
234 | ||
235 | return drive_handle; | |
236 | } | |
237 | ||
238 | /** | |
239 | * do_drive_get_GTF - get the drive bootup default taskfile settings | |
240 | * @drive: the drive for which the taskfile settings should be retrieved | |
241 | * @gtf_length: number of bytes of _GTF data returned at @gtf_address | |
242 | * @gtf_address: buffer containing _GTF taskfile arrays | |
243 | * | |
244 | * The _GTF method has no input parameters. | |
245 | * It returns a variable number of register set values (registers | |
246 | * hex 1F1..1F7, taskfiles). | |
247 | * The <variable number> is not known in advance, so have ACPI-CA | |
248 | * allocate the buffer as needed and return it, then free it later. | |
249 | * | |
250 | * The returned @gtf_length and @gtf_address are only valid if the | |
251 | * function return value is 0. | |
252 | */ | |
253 | static int do_drive_get_GTF(ide_drive_t *drive, | |
254 | unsigned int *gtf_length, unsigned long *gtf_address, | |
255 | unsigned long *obj_loc) | |
256 | { | |
257 | acpi_status status; | |
258 | struct acpi_buffer output; | |
259 | union acpi_object *out_obj; | |
898ec223 | 260 | ide_hwif_t *hwif = drive->hwif; |
e3a59b4d HR |
261 | struct device *dev = hwif->gendev.parent; |
262 | int err = -ENODEV; | |
263 | int port; | |
264 | ||
265 | *gtf_length = 0; | |
266 | *gtf_address = 0UL; | |
267 | *obj_loc = 0UL; | |
268 | ||
269 | if (ide_noacpi) | |
270 | return 0; | |
271 | ||
272 | if (!dev) { | |
273 | DEBPRINT("no PCI device for %s\n", hwif->name); | |
274 | goto out; | |
275 | } | |
276 | ||
277 | if (!hwif->acpidata) { | |
278 | DEBPRINT("no ACPI data for %s\n", hwif->name); | |
279 | goto out; | |
280 | } | |
281 | ||
282 | port = hwif->channel ? drive->dn - 2: drive->dn; | |
283 | ||
e3a59b4d HR |
284 | DEBPRINT("ENTER: %s at %s, port#: %d, hard_port#: %d\n", |
285 | hwif->name, dev->bus_id, port, hwif->channel); | |
286 | ||
97100fc8 | 287 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) { |
e3a59b4d HR |
288 | DEBPRINT("%s drive %d:%d not present\n", |
289 | hwif->name, hwif->channel, port); | |
290 | goto out; | |
291 | } | |
292 | ||
293 | /* Get this drive's _ADR info. if not already known. */ | |
294 | if (!drive->acpidata->obj_handle) { | |
295 | drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive); | |
296 | if (!drive->acpidata->obj_handle) { | |
297 | DEBPRINT("No ACPI object found for %s\n", | |
298 | drive->name); | |
299 | goto out; | |
300 | } | |
301 | } | |
302 | ||
303 | /* Setting up output buffer */ | |
304 | output.length = ACPI_ALLOCATE_BUFFER; | |
305 | output.pointer = NULL; /* ACPI-CA sets this; save/free it later */ | |
306 | ||
307 | /* _GTF has no input parameters */ | |
308 | err = -EIO; | |
309 | status = acpi_evaluate_object(drive->acpidata->obj_handle, "_GTF", | |
310 | NULL, &output); | |
311 | if (ACPI_FAILURE(status)) { | |
312 | printk(KERN_DEBUG | |
313 | "%s: Run _GTF error: status = 0x%x\n", | |
eb63963a | 314 | __func__, status); |
e3a59b4d HR |
315 | goto out; |
316 | } | |
317 | ||
318 | if (!output.length || !output.pointer) { | |
319 | DEBPRINT("Run _GTF: " | |
320 | "length or ptr is NULL (0x%llx, 0x%p)\n", | |
321 | (unsigned long long)output.length, | |
322 | output.pointer); | |
323 | goto out; | |
324 | } | |
325 | ||
326 | out_obj = output.pointer; | |
327 | if (out_obj->type != ACPI_TYPE_BUFFER) { | |
328 | DEBPRINT("Run _GTF: error: " | |
329 | "expected object type of ACPI_TYPE_BUFFER, " | |
330 | "got 0x%x\n", out_obj->type); | |
331 | err = -ENOENT; | |
332 | kfree(output.pointer); | |
333 | goto out; | |
334 | } | |
335 | ||
336 | if (!out_obj->buffer.length || !out_obj->buffer.pointer || | |
337 | out_obj->buffer.length % REGS_PER_GTF) { | |
338 | printk(KERN_ERR | |
339 | "%s: unexpected GTF length (%d) or addr (0x%p)\n", | |
eb63963a | 340 | __func__, out_obj->buffer.length, |
e3a59b4d HR |
341 | out_obj->buffer.pointer); |
342 | err = -ENOENT; | |
343 | kfree(output.pointer); | |
344 | goto out; | |
345 | } | |
346 | ||
347 | *gtf_length = out_obj->buffer.length; | |
348 | *gtf_address = (unsigned long)out_obj->buffer.pointer; | |
349 | *obj_loc = (unsigned long)out_obj; | |
350 | DEBPRINT("returning gtf_length=%d, gtf_address=0x%lx, obj_loc=0x%lx\n", | |
351 | *gtf_length, *gtf_address, *obj_loc); | |
352 | err = 0; | |
353 | out: | |
354 | return err; | |
355 | } | |
356 | ||
357 | /** | |
358 | * taskfile_load_raw - send taskfile registers to drive | |
359 | * @drive: drive to which output is sent | |
360 | * @gtf: raw ATA taskfile register set (0x1f1 - 0x1f7) | |
361 | * | |
362 | * Outputs IDE taskfile to the drive. | |
363 | */ | |
364 | static int taskfile_load_raw(ide_drive_t *drive, | |
365 | const struct taskfile_array *gtf) | |
366 | { | |
367 | ide_task_t args; | |
368 | int err = 0; | |
369 | ||
370 | DEBPRINT("(0x1f1-1f7): hex: " | |
371 | "%02x %02x %02x %02x %02x %02x %02x\n", | |
372 | gtf->tfa[0], gtf->tfa[1], gtf->tfa[2], | |
373 | gtf->tfa[3], gtf->tfa[4], gtf->tfa[5], gtf->tfa[6]); | |
374 | ||
375 | memset(&args, 0, sizeof(ide_task_t)); | |
e3a59b4d HR |
376 | |
377 | /* convert gtf to IDE Taskfile */ | |
650d841d | 378 | memcpy(&args.tf_array[7], >f->tfa, 7); |
657cc1a8 | 379 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
e3a59b4d | 380 | |
1dbfeb4b | 381 | if (!ide_acpigtf) { |
e3a59b4d HR |
382 | DEBPRINT("_GTF execution disabled\n"); |
383 | return err; | |
384 | } | |
385 | ||
9a3c49be | 386 | err = ide_no_data_taskfile(drive, &args); |
e3a59b4d | 387 | if (err) |
9a3c49be | 388 | printk(KERN_ERR "%s: ide_no_data_taskfile failed: %u\n", |
eb63963a | 389 | __func__, err); |
e3a59b4d HR |
390 | |
391 | return err; | |
392 | } | |
393 | ||
394 | /** | |
395 | * do_drive_set_taskfiles - write the drive taskfile settings from _GTF | |
396 | * @drive: the drive to which the taskfile command should be sent | |
397 | * @gtf_length: total number of bytes of _GTF taskfiles | |
398 | * @gtf_address: location of _GTF taskfile arrays | |
399 | * | |
400 | * Write {gtf_address, length gtf_length} in groups of | |
401 | * REGS_PER_GTF bytes. | |
402 | */ | |
403 | static int do_drive_set_taskfiles(ide_drive_t *drive, | |
404 | unsigned int gtf_length, | |
405 | unsigned long gtf_address) | |
406 | { | |
407 | int rc = -ENODEV, err; | |
408 | int gtf_count = gtf_length / REGS_PER_GTF; | |
409 | int ix; | |
410 | struct taskfile_array *gtf; | |
411 | ||
412 | if (ide_noacpi) | |
413 | return 0; | |
414 | ||
415 | DEBPRINT("ENTER: %s, hard_port#: %d\n", drive->name, drive->dn); | |
416 | ||
97100fc8 | 417 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
e3a59b4d | 418 | goto out; |
97100fc8 | 419 | |
e3a59b4d HR |
420 | if (!gtf_count) /* shouldn't be here */ |
421 | goto out; | |
422 | ||
423 | DEBPRINT("total GTF bytes=%u (0x%x), gtf_count=%d, addr=0x%lx\n", | |
424 | gtf_length, gtf_length, gtf_count, gtf_address); | |
425 | ||
426 | if (gtf_length % REGS_PER_GTF) { | |
427 | printk(KERN_ERR "%s: unexpected GTF length (%d)\n", | |
eb63963a | 428 | __func__, gtf_length); |
e3a59b4d HR |
429 | goto out; |
430 | } | |
431 | ||
432 | rc = 0; | |
433 | for (ix = 0; ix < gtf_count; ix++) { | |
434 | gtf = (struct taskfile_array *) | |
435 | (gtf_address + ix * REGS_PER_GTF); | |
436 | ||
437 | /* send all TaskFile registers (0x1f1-0x1f7) *in*that*order* */ | |
438 | err = taskfile_load_raw(drive, gtf); | |
439 | if (err) | |
440 | rc = err; | |
441 | } | |
442 | ||
443 | out: | |
444 | return rc; | |
445 | } | |
446 | ||
447 | /** | |
448 | * ide_acpi_exec_tfs - get then write drive taskfile settings | |
449 | * @drive: the drive for which the taskfile settings should be | |
450 | * written. | |
451 | * | |
452 | * According to the ACPI spec this should be called after _STM | |
453 | * has been evaluated for the interface. Some ACPI vendors interpret | |
454 | * that as a hard requirement and modify the taskfile according | |
455 | * to the Identify Drive information passed down with _STM. | |
456 | * So one should really make sure to call this only after _STM has | |
457 | * been executed. | |
458 | */ | |
459 | int ide_acpi_exec_tfs(ide_drive_t *drive) | |
460 | { | |
461 | int ret; | |
462 | unsigned int gtf_length; | |
463 | unsigned long gtf_address; | |
464 | unsigned long obj_loc; | |
465 | ||
466 | if (ide_noacpi) | |
467 | return 0; | |
468 | ||
469 | DEBPRINT("call get_GTF, drive=%s port=%d\n", drive->name, drive->dn); | |
470 | ||
471 | ret = do_drive_get_GTF(drive, >f_length, >f_address, &obj_loc); | |
472 | if (ret < 0) { | |
473 | DEBPRINT("get_GTF error (%d)\n", ret); | |
474 | return ret; | |
475 | } | |
476 | ||
477 | DEBPRINT("call set_taskfiles, drive=%s\n", drive->name); | |
478 | ||
479 | ret = do_drive_set_taskfiles(drive, gtf_length, gtf_address); | |
480 | kfree((void *)obj_loc); | |
481 | if (ret < 0) { | |
482 | DEBPRINT("set_taskfiles error (%d)\n", ret); | |
483 | } | |
484 | ||
485 | DEBPRINT("ret=%d\n", ret); | |
486 | ||
487 | return ret; | |
488 | } | |
e3a59b4d HR |
489 | |
490 | /** | |
491 | * ide_acpi_get_timing - get the channel (controller) timings | |
492 | * @hwif: target IDE interface (channel) | |
493 | * | |
494 | * This function executes the _GTM ACPI method for the target channel. | |
495 | * | |
496 | */ | |
497 | void ide_acpi_get_timing(ide_hwif_t *hwif) | |
498 | { | |
499 | acpi_status status; | |
500 | struct acpi_buffer output; | |
501 | union acpi_object *out_obj; | |
502 | ||
503 | if (ide_noacpi) | |
504 | return; | |
505 | ||
506 | DEBPRINT("ENTER:\n"); | |
507 | ||
508 | if (!hwif->acpidata) { | |
509 | DEBPRINT("no ACPI data for %s\n", hwif->name); | |
510 | return; | |
511 | } | |
512 | ||
513 | /* Setting up output buffer for _GTM */ | |
514 | output.length = ACPI_ALLOCATE_BUFFER; | |
515 | output.pointer = NULL; /* ACPI-CA sets this; save/free it later */ | |
516 | ||
517 | /* _GTM has no input parameters */ | |
518 | status = acpi_evaluate_object(hwif->acpidata->obj_handle, "_GTM", | |
519 | NULL, &output); | |
520 | ||
521 | DEBPRINT("_GTM status: %d, outptr: 0x%p, outlen: 0x%llx\n", | |
522 | status, output.pointer, | |
523 | (unsigned long long)output.length); | |
524 | ||
525 | if (ACPI_FAILURE(status)) { | |
526 | DEBPRINT("Run _GTM error: status = 0x%x\n", status); | |
527 | return; | |
528 | } | |
529 | ||
530 | if (!output.length || !output.pointer) { | |
531 | DEBPRINT("Run _GTM: length or ptr is NULL (0x%llx, 0x%p)\n", | |
532 | (unsigned long long)output.length, | |
533 | output.pointer); | |
534 | kfree(output.pointer); | |
535 | return; | |
536 | } | |
537 | ||
538 | out_obj = output.pointer; | |
539 | if (out_obj->type != ACPI_TYPE_BUFFER) { | |
540 | kfree(output.pointer); | |
541 | DEBPRINT("Run _GTM: error: " | |
542 | "expected object type of ACPI_TYPE_BUFFER, " | |
543 | "got 0x%x\n", out_obj->type); | |
544 | return; | |
545 | } | |
546 | ||
547 | if (!out_obj->buffer.length || !out_obj->buffer.pointer || | |
548 | out_obj->buffer.length != sizeof(struct GTM_buffer)) { | |
549 | kfree(output.pointer); | |
550 | printk(KERN_ERR | |
1e8f34f7 AM |
551 | "%s: unexpected _GTM length (0x%x)[should be 0x%zx] or " |
552 | "addr (0x%p)\n", | |
eb63963a | 553 | __func__, out_obj->buffer.length, |
1e8f34f7 | 554 | sizeof(struct GTM_buffer), out_obj->buffer.pointer); |
e3a59b4d HR |
555 | return; |
556 | } | |
557 | ||
558 | memcpy(&hwif->acpidata->gtm, out_obj->buffer.pointer, | |
559 | sizeof(struct GTM_buffer)); | |
560 | ||
561 | DEBPRINT("_GTM info: ptr: 0x%p, len: 0x%x, exp.len: 0x%Zx\n", | |
562 | out_obj->buffer.pointer, out_obj->buffer.length, | |
563 | sizeof(struct GTM_buffer)); | |
564 | ||
565 | DEBPRINT("_GTM fields: 0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n", | |
566 | hwif->acpidata->gtm.PIO_speed0, | |
567 | hwif->acpidata->gtm.DMA_speed0, | |
568 | hwif->acpidata->gtm.PIO_speed1, | |
569 | hwif->acpidata->gtm.DMA_speed1, | |
570 | hwif->acpidata->gtm.GTM_flags); | |
571 | ||
572 | kfree(output.pointer); | |
573 | } | |
e3a59b4d HR |
574 | |
575 | /** | |
576 | * ide_acpi_push_timing - set the channel (controller) timings | |
577 | * @hwif: target IDE interface (channel) | |
578 | * | |
579 | * This function executes the _STM ACPI method for the target channel. | |
580 | * | |
581 | * _STM requires Identify Drive data, which has to passed as an argument. | |
4dde4492 | 582 | * Unfortunately drive->id is a mangled version which we can't readily |
e3a59b4d HR |
583 | * use; hence we'll get the information afresh. |
584 | */ | |
585 | void ide_acpi_push_timing(ide_hwif_t *hwif) | |
586 | { | |
587 | acpi_status status; | |
588 | struct acpi_object_list input; | |
589 | union acpi_object in_params[3]; | |
590 | struct ide_acpi_drive_link *master = &hwif->acpidata->master; | |
591 | struct ide_acpi_drive_link *slave = &hwif->acpidata->slave; | |
592 | ||
593 | if (ide_noacpi) | |
594 | return; | |
595 | ||
596 | DEBPRINT("ENTER:\n"); | |
597 | ||
598 | if (!hwif->acpidata) { | |
599 | DEBPRINT("no ACPI data for %s\n", hwif->name); | |
600 | return; | |
601 | } | |
602 | ||
603 | /* Give the GTM buffer + drive Identify data to the channel via the | |
604 | * _STM method: */ | |
605 | /* setup input parameters buffer for _STM */ | |
606 | input.count = 3; | |
607 | input.pointer = in_params; | |
608 | in_params[0].type = ACPI_TYPE_BUFFER; | |
609 | in_params[0].buffer.length = sizeof(struct GTM_buffer); | |
610 | in_params[0].buffer.pointer = (u8 *)&hwif->acpidata->gtm; | |
611 | in_params[1].type = ACPI_TYPE_BUFFER; | |
0e63a588 | 612 | in_params[1].buffer.length = ATA_ID_WORDS * 2; |
e3a59b4d HR |
613 | in_params[1].buffer.pointer = (u8 *)&master->idbuff; |
614 | in_params[2].type = ACPI_TYPE_BUFFER; | |
0e63a588 | 615 | in_params[2].buffer.length = ATA_ID_WORDS * 2; |
e3a59b4d HR |
616 | in_params[2].buffer.pointer = (u8 *)&slave->idbuff; |
617 | /* Output buffer: _STM has no output */ | |
618 | ||
619 | status = acpi_evaluate_object(hwif->acpidata->obj_handle, "_STM", | |
620 | &input, NULL); | |
621 | ||
622 | if (ACPI_FAILURE(status)) { | |
623 | DEBPRINT("Run _STM error: status = 0x%x\n", status); | |
624 | } | |
625 | DEBPRINT("_STM status: %d\n", status); | |
626 | } | |
e3a59b4d | 627 | |
5e32132b SL |
628 | /** |
629 | * ide_acpi_set_state - set the channel power state | |
630 | * @hwif: target IDE interface | |
631 | * @on: state, on/off | |
632 | * | |
633 | * This function executes the _PS0/_PS3 ACPI method to set the power state. | |
634 | * ACPI spec requires _PS0 when IDE power on and _PS3 when power off | |
635 | */ | |
636 | void ide_acpi_set_state(ide_hwif_t *hwif, int on) | |
637 | { | |
2bd24a1c BZ |
638 | ide_drive_t *drive; |
639 | int i; | |
5e32132b | 640 | |
90494893 | 641 | if (ide_noacpi || ide_noacpi_psx) |
5e32132b SL |
642 | return; |
643 | ||
644 | DEBPRINT("ENTER:\n"); | |
645 | ||
646 | if (!hwif->acpidata) { | |
647 | DEBPRINT("no ACPI data for %s\n", hwif->name); | |
648 | return; | |
649 | } | |
650 | /* channel first and then drives for power on and verse versa for power off */ | |
651 | if (on) | |
652 | acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0); | |
5e32132b | 653 | |
2bd24a1c | 654 | ide_port_for_each_dev(i, drive, hwif) { |
5e32132b SL |
655 | if (!drive->acpidata->obj_handle) |
656 | drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive); | |
657 | ||
97100fc8 BZ |
658 | if (drive->acpidata->obj_handle && |
659 | (drive->dev_flags & IDE_DFLAG_PRESENT)) { | |
5e32132b SL |
660 | acpi_bus_set_power(drive->acpidata->obj_handle, |
661 | on? ACPI_STATE_D0: ACPI_STATE_D3); | |
662 | } | |
663 | } | |
664 | if (!on) | |
665 | acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D3); | |
666 | } | |
5e32132b | 667 | |
e3a59b4d HR |
668 | /** |
669 | * ide_acpi_init - initialize the ACPI link for an IDE interface | |
670 | * @hwif: target IDE interface (channel) | |
671 | * | |
672 | * The ACPI spec is not quite clear when the drive identify buffer | |
673 | * should be obtained. Calling IDENTIFY DEVICE during shutdown | |
674 | * is not the best of ideas as the drive might already being put to | |
675 | * sleep. And obviously we can't call it during resume. | |
676 | * So we get the information during startup; but this means that | |
677 | * any changes during run-time will be lost after resume. | |
678 | */ | |
679 | void ide_acpi_init(ide_hwif_t *hwif) | |
680 | { | |
90494893 SL |
681 | ide_acpi_blacklist(); |
682 | ||
e3a59b4d HR |
683 | hwif->acpidata = kzalloc(sizeof(struct ide_acpi_hwif_link), GFP_KERNEL); |
684 | if (!hwif->acpidata) | |
685 | return; | |
686 | ||
687 | hwif->acpidata->obj_handle = ide_acpi_hwif_get_handle(hwif); | |
688 | if (!hwif->acpidata->obj_handle) { | |
689 | DEBPRINT("no ACPI object for %s found\n", hwif->name); | |
690 | kfree(hwif->acpidata); | |
691 | hwif->acpidata = NULL; | |
e3a59b4d | 692 | } |
eafd88a3 BZ |
693 | } |
694 | ||
695 | void ide_acpi_port_init_devices(ide_hwif_t *hwif) | |
696 | { | |
697 | ide_drive_t *drive; | |
698 | int i, err; | |
699 | ||
700 | if (hwif->acpidata == NULL) | |
701 | return; | |
e3a59b4d HR |
702 | |
703 | /* | |
704 | * The ACPI spec mandates that we send information | |
705 | * for both drives, regardless whether they are connected | |
706 | * or not. | |
707 | */ | |
5e7f3a46 BZ |
708 | hwif->devices[0]->acpidata = &hwif->acpidata->master; |
709 | hwif->devices[1]->acpidata = &hwif->acpidata->slave; | |
e3a59b4d HR |
710 | |
711 | /* | |
712 | * Send IDENTIFY for each drive | |
713 | */ | |
2bd24a1c | 714 | ide_port_for_each_dev(i, drive, hwif) { |
8f22a72b BZ |
715 | memset(drive->acpidata, 0, sizeof(*drive->acpidata)); |
716 | ||
97100fc8 | 717 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
eafd88a3 | 718 | continue; |
e3a59b4d | 719 | |
eafd88a3 BZ |
720 | err = taskfile_lib_get_identify(drive, drive->acpidata->idbuff); |
721 | if (err) | |
e3a59b4d | 722 | DEBPRINT("identify device %s failed (%d)\n", |
eafd88a3 | 723 | drive->name, err); |
e3a59b4d HR |
724 | } |
725 | ||
1dbfeb4b | 726 | if (!ide_acpionboot) { |
e3a59b4d HR |
727 | DEBPRINT("ACPI methods disabled on boot\n"); |
728 | return; | |
729 | } | |
730 | ||
5e32132b SL |
731 | /* ACPI _PS0 before _STM */ |
732 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d HR |
733 | /* |
734 | * ACPI requires us to call _STM on startup | |
735 | */ | |
736 | ide_acpi_get_timing(hwif); | |
737 | ide_acpi_push_timing(hwif); | |
738 | ||
2bd24a1c | 739 | ide_port_for_each_dev(i, drive, hwif) { |
97100fc8 | 740 | if (drive->dev_flags & IDE_DFLAG_PRESENT) |
e3a59b4d HR |
741 | /* Execute ACPI startup code */ |
742 | ide_acpi_exec_tfs(drive); | |
e3a59b4d HR |
743 | } |
744 | } |