Commit | Line | Data |
---|---|---|
11ef697b KCA |
1 | /* |
2 | * libata-acpi.c | |
3 | * Provides ACPI support for PATA/SATA. | |
4 | * | |
5 | * Copyright (C) 2006 Intel Corp. | |
6 | * Copyright (C) 2006 Randy Dunlap | |
7 | */ | |
8 | ||
9 | #include <linux/ata.h> | |
10 | #include <linux/delay.h> | |
11 | #include <linux/device.h> | |
12 | #include <linux/errno.h> | |
13 | #include <linux/kernel.h> | |
14 | #include <linux/acpi.h> | |
15 | #include <linux/libata.h> | |
16 | #include <linux/pci.h> | |
17 | #include "libata.h" | |
18 | ||
19 | #include <acpi/acpi_bus.h> | |
20 | #include <acpi/acnames.h> | |
21 | #include <acpi/acnamesp.h> | |
22 | #include <acpi/acparser.h> | |
23 | #include <acpi/acexcep.h> | |
24 | #include <acpi/acmacros.h> | |
25 | #include <acpi/actypes.h> | |
26 | ||
27 | #define SATA_ROOT_PORT(x) (((x) >> 16) & 0xffff) | |
28 | #define SATA_PORT_NUMBER(x) ((x) & 0xffff) /* or NO_PORT_MULT */ | |
29 | #define NO_PORT_MULT 0xffff | |
30 | #define SATA_ADR_RSVD 0xffffffff | |
31 | ||
32 | #define REGS_PER_GTF 7 | |
33 | struct taskfile_array { | |
34 | u8 tfa[REGS_PER_GTF]; /* regs. 0x1f1 - 0x1f7 */ | |
35 | }; | |
36 | ||
ca426635 AC |
37 | /* |
38 | * Helper - belongs in the PCI layer somewhere eventually | |
39 | */ | |
40 | static int is_pci_dev(struct device *dev) | |
41 | { | |
42 | return (dev->bus == &pci_bus_type); | |
43 | } | |
11ef697b KCA |
44 | |
45 | /** | |
46 | * sata_get_dev_handle - finds acpi_handle and PCI device.function | |
47 | * @dev: device to locate | |
48 | * @handle: returned acpi_handle for @dev | |
49 | * @pcidevfn: return PCI device.func for @dev | |
50 | * | |
51 | * This function is somewhat SATA-specific. Or at least the | |
52 | * PATA & SATA versions of this function are different, | |
53 | * so it's not entirely generic code. | |
54 | * | |
55 | * Returns 0 on success, <0 on error. | |
56 | */ | |
57 | static int sata_get_dev_handle(struct device *dev, acpi_handle *handle, | |
58 | acpi_integer *pcidevfn) | |
59 | { | |
60 | struct pci_dev *pci_dev; | |
61 | acpi_integer addr; | |
62 | ||
ca426635 AC |
63 | if (!is_pci_dev(dev)) |
64 | return -ENODEV; | |
65 | ||
11ef697b KCA |
66 | pci_dev = to_pci_dev(dev); /* NOTE: PCI-specific */ |
67 | /* Please refer to the ACPI spec for the syntax of _ADR. */ | |
68 | addr = (PCI_SLOT(pci_dev->devfn) << 16) | PCI_FUNC(pci_dev->devfn); | |
69 | *pcidevfn = addr; | |
70 | *handle = acpi_get_child(DEVICE_ACPI_HANDLE(dev->parent), addr); | |
71 | if (!*handle) | |
72 | return -ENODEV; | |
73 | return 0; | |
74 | } | |
75 | ||
76 | /** | |
77 | * pata_get_dev_handle - finds acpi_handle and PCI device.function | |
78 | * @dev: device to locate | |
79 | * @handle: returned acpi_handle for @dev | |
80 | * @pcidevfn: return PCI device.func for @dev | |
81 | * | |
82 | * The PATA and SATA versions of this function are different. | |
83 | * | |
84 | * Returns 0 on success, <0 on error. | |
85 | */ | |
86 | static int pata_get_dev_handle(struct device *dev, acpi_handle *handle, | |
87 | acpi_integer *pcidevfn) | |
88 | { | |
89 | unsigned int bus, devnum, func; | |
90 | acpi_integer addr; | |
91 | acpi_handle dev_handle, parent_handle; | |
92 | struct acpi_buffer buffer = {.length = ACPI_ALLOCATE_BUFFER, | |
93 | .pointer = NULL}; | |
94 | acpi_status status; | |
95 | struct acpi_device_info *dinfo = NULL; | |
96 | int ret = -ENODEV; | |
ca426635 AC |
97 | struct pci_dev *pdev; |
98 | ||
99 | if (!is_pci_dev(dev)) | |
100 | return -ENODEV; | |
101 | ||
102 | pdev = to_pci_dev(dev); | |
11ef697b KCA |
103 | |
104 | bus = pdev->bus->number; | |
105 | devnum = PCI_SLOT(pdev->devfn); | |
106 | func = PCI_FUNC(pdev->devfn); | |
107 | ||
108 | dev_handle = DEVICE_ACPI_HANDLE(dev); | |
109 | parent_handle = DEVICE_ACPI_HANDLE(dev->parent); | |
110 | ||
111 | status = acpi_get_object_info(parent_handle, &buffer); | |
112 | if (ACPI_FAILURE(status)) | |
113 | goto err; | |
114 | ||
115 | dinfo = buffer.pointer; | |
116 | if (dinfo && (dinfo->valid & ACPI_VALID_ADR) && | |
117 | dinfo->address == bus) { | |
118 | /* ACPI spec for _ADR for PCI bus: */ | |
119 | addr = (acpi_integer)(devnum << 16 | func); | |
120 | *pcidevfn = addr; | |
121 | *handle = dev_handle; | |
122 | } else { | |
123 | goto err; | |
124 | } | |
125 | ||
126 | if (!*handle) | |
127 | goto err; | |
128 | ret = 0; | |
129 | err: | |
130 | kfree(dinfo); | |
131 | return ret; | |
132 | } | |
133 | ||
134 | struct walk_info { /* can be trimmed some */ | |
135 | struct device *dev; | |
136 | struct acpi_device *adev; | |
137 | acpi_handle handle; | |
138 | acpi_integer pcidevfn; | |
139 | unsigned int drivenum; | |
140 | acpi_handle obj_handle; | |
141 | struct ata_port *ataport; | |
142 | struct ata_device *atadev; | |
143 | u32 sata_adr; | |
144 | int status; | |
145 | char basepath[ACPI_PATHNAME_MAX]; | |
146 | int basepath_len; | |
147 | }; | |
148 | ||
149 | static acpi_status get_devices(acpi_handle handle, | |
150 | u32 level, void *context, void **return_value) | |
151 | { | |
152 | acpi_status status; | |
153 | struct walk_info *winfo = context; | |
154 | struct acpi_buffer namebuf = {ACPI_ALLOCATE_BUFFER, NULL}; | |
155 | char *pathname; | |
156 | struct acpi_buffer buffer; | |
157 | struct acpi_device_info *dinfo; | |
158 | ||
159 | status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &namebuf); | |
160 | if (status) | |
161 | goto ret; | |
162 | pathname = namebuf.pointer; | |
163 | ||
164 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
165 | buffer.pointer = NULL; | |
166 | status = acpi_get_object_info(handle, &buffer); | |
167 | if (ACPI_FAILURE(status)) | |
168 | goto out2; | |
169 | ||
170 | dinfo = buffer.pointer; | |
171 | ||
172 | /* find full device path name for pcidevfn */ | |
173 | if (dinfo && (dinfo->valid & ACPI_VALID_ADR) && | |
174 | dinfo->address == winfo->pcidevfn) { | |
175 | if (ata_msg_probe(winfo->ataport)) | |
176 | ata_dev_printk(winfo->atadev, KERN_DEBUG, | |
177 | ":%s: matches pcidevfn (0x%llx)\n", | |
178 | pathname, winfo->pcidevfn); | |
179 | strlcpy(winfo->basepath, pathname, | |
180 | sizeof(winfo->basepath)); | |
181 | winfo->basepath_len = strlen(pathname); | |
182 | goto out; | |
183 | } | |
184 | ||
185 | /* if basepath is not yet known, ignore this object */ | |
186 | if (!winfo->basepath_len) | |
187 | goto out; | |
188 | ||
189 | /* if this object is in scope of basepath, maybe use it */ | |
190 | if (strncmp(pathname, winfo->basepath, | |
191 | winfo->basepath_len) == 0) { | |
192 | if (!(dinfo->valid & ACPI_VALID_ADR)) | |
193 | goto out; | |
194 | if (ata_msg_probe(winfo->ataport)) | |
195 | ata_dev_printk(winfo->atadev, KERN_DEBUG, | |
196 | "GOT ONE: (%s) root_port = 0x%llx," | |
197 | " port_num = 0x%llx\n", pathname, | |
198 | SATA_ROOT_PORT(dinfo->address), | |
199 | SATA_PORT_NUMBER(dinfo->address)); | |
200 | /* heuristics: */ | |
201 | if (SATA_PORT_NUMBER(dinfo->address) != NO_PORT_MULT) | |
202 | if (ata_msg_probe(winfo->ataport)) | |
203 | ata_dev_printk(winfo->atadev, | |
204 | KERN_DEBUG, "warning: don't" | |
205 | " know how to handle SATA port" | |
206 | " multiplier\n"); | |
207 | if (SATA_ROOT_PORT(dinfo->address) == | |
208 | winfo->ataport->port_no && | |
209 | SATA_PORT_NUMBER(dinfo->address) == NO_PORT_MULT) { | |
210 | if (ata_msg_probe(winfo->ataport)) | |
211 | ata_dev_printk(winfo->atadev, | |
212 | KERN_DEBUG, | |
213 | "THIS ^^^^^ is the requested" | |
214 | " SATA drive (handle = 0x%p)\n", | |
215 | handle); | |
216 | winfo->sata_adr = dinfo->address; | |
217 | winfo->obj_handle = handle; | |
218 | } | |
219 | } | |
220 | out: | |
221 | kfree(dinfo); | |
222 | out2: | |
223 | kfree(pathname); | |
224 | ||
225 | ret: | |
226 | return status; | |
227 | } | |
228 | ||
229 | /* Get the SATA drive _ADR object. */ | |
230 | static int get_sata_adr(struct device *dev, acpi_handle handle, | |
231 | acpi_integer pcidevfn, unsigned int drive, | |
232 | struct ata_port *ap, | |
233 | struct ata_device *atadev, u32 *dev_adr) | |
234 | { | |
235 | acpi_status status; | |
236 | struct walk_info *winfo; | |
237 | int err = -ENOMEM; | |
238 | ||
239 | winfo = kzalloc(sizeof(struct walk_info), GFP_KERNEL); | |
240 | if (!winfo) | |
241 | goto out; | |
242 | ||
243 | winfo->dev = dev; | |
244 | winfo->atadev = atadev; | |
245 | winfo->ataport = ap; | |
246 | if (acpi_bus_get_device(handle, &winfo->adev) < 0) | |
247 | if (ata_msg_probe(ap)) | |
248 | ata_dev_printk(winfo->atadev, KERN_DEBUG, | |
249 | "acpi_bus_get_device failed\n"); | |
250 | winfo->handle = handle; | |
251 | winfo->pcidevfn = pcidevfn; | |
252 | winfo->drivenum = drive; | |
253 | ||
254 | status = acpi_get_devices(NULL, get_devices, winfo, NULL); | |
255 | if (ACPI_FAILURE(status)) { | |
256 | if (ata_msg_probe(ap)) | |
257 | ata_dev_printk(winfo->atadev, KERN_DEBUG, | |
258 | "%s: acpi_get_devices failed\n", | |
259 | __FUNCTION__); | |
260 | err = -ENODEV; | |
261 | } else { | |
262 | *dev_adr = winfo->sata_adr; | |
263 | atadev->obj_handle = winfo->obj_handle; | |
264 | err = 0; | |
265 | } | |
266 | kfree(winfo); | |
267 | out: | |
268 | return err; | |
269 | } | |
270 | ||
271 | /** | |
272 | * do_drive_get_GTF - get the drive bootup default taskfile settings | |
3a32a8e9 | 273 | * @dev: target ATA device |
11ef697b KCA |
274 | * @gtf_length: number of bytes of _GTF data returned at @gtf_address |
275 | * @gtf_address: buffer containing _GTF taskfile arrays | |
276 | * | |
277 | * This applies to both PATA and SATA drives. | |
278 | * | |
279 | * The _GTF method has no input parameters. | |
280 | * It returns a variable number of register set values (registers | |
281 | * hex 1F1..1F7, taskfiles). | |
282 | * The <variable number> is not known in advance, so have ACPI-CA | |
283 | * allocate the buffer as needed and return it, then free it later. | |
284 | * | |
285 | * The returned @gtf_length and @gtf_address are only valid if the | |
286 | * function return value is 0. | |
287 | */ | |
3a32a8e9 TH |
288 | static int do_drive_get_GTF(struct ata_device *dev, unsigned int *gtf_length, |
289 | unsigned long *gtf_address, unsigned long *obj_loc) | |
11ef697b | 290 | { |
3a32a8e9 TH |
291 | struct ata_port *ap = dev->ap; |
292 | acpi_status status; | |
293 | acpi_handle dev_handle = NULL; | |
294 | acpi_handle chan_handle, drive_handle; | |
295 | acpi_integer pcidevfn = 0; | |
296 | u32 dev_adr; | |
297 | struct acpi_buffer output; | |
298 | union acpi_object *out_obj; | |
299 | struct device *gdev = ap->host->dev; | |
300 | int err = -ENODEV; | |
11ef697b KCA |
301 | |
302 | *gtf_length = 0; | |
303 | *gtf_address = 0UL; | |
304 | *obj_loc = 0UL; | |
305 | ||
d7d0dad6 | 306 | if (libata_noacpi) |
11ef697b KCA |
307 | return 0; |
308 | ||
309 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 310 | ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n", |
878d4fed | 311 | __FUNCTION__, ap->port_no); |
11ef697b | 312 | |
3a32a8e9 | 313 | if (!ata_dev_enabled(dev) || (ap->flags & ATA_FLAG_DISABLED)) { |
11ef697b | 314 | if (ata_msg_probe(ap)) |
3a32a8e9 | 315 | ata_dev_printk(dev, KERN_DEBUG, "%s: ERR: " |
11ef697b | 316 | "ata_dev_present: %d, PORT_DISABLED: %lu\n", |
3a32a8e9 | 317 | __FUNCTION__, ata_dev_enabled(dev), |
11ef697b KCA |
318 | ap->flags & ATA_FLAG_DISABLED); |
319 | goto out; | |
320 | } | |
321 | ||
322 | /* Don't continue if device has no _ADR method. | |
323 | * _GTF is intended for known motherboard devices. */ | |
3cadbcc0 | 324 | if (!(ap->flags & ATA_FLAG_ACPI_SATA)) { |
3a32a8e9 | 325 | err = pata_get_dev_handle(gdev, &dev_handle, &pcidevfn); |
11ef697b KCA |
326 | if (err < 0) { |
327 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 328 | ata_dev_printk(dev, KERN_DEBUG, |
11ef697b KCA |
329 | "%s: pata_get_dev_handle failed (%d)\n", |
330 | __FUNCTION__, err); | |
331 | goto out; | |
332 | } | |
333 | } else { | |
3a32a8e9 | 334 | err = sata_get_dev_handle(gdev, &dev_handle, &pcidevfn); |
11ef697b KCA |
335 | if (err < 0) { |
336 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 337 | ata_dev_printk(dev, KERN_DEBUG, |
11ef697b KCA |
338 | "%s: sata_get_dev_handle failed (%d\n", |
339 | __FUNCTION__, err); | |
340 | goto out; | |
341 | } | |
342 | } | |
343 | ||
344 | /* Get this drive's _ADR info. if not already known. */ | |
3a32a8e9 | 345 | if (!dev->obj_handle) { |
3cadbcc0 | 346 | if (!(ap->flags & ATA_FLAG_ACPI_SATA)) { |
11ef697b KCA |
347 | /* get child objects of dev_handle == channel objects, |
348 | * + _their_ children == drive objects */ | |
349 | /* channel is ap->port_no */ | |
350 | chan_handle = acpi_get_child(dev_handle, | |
351 | ap->port_no); | |
352 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 353 | ata_dev_printk(dev, KERN_DEBUG, |
11ef697b KCA |
354 | "%s: chan adr=%d: chan_handle=0x%p\n", |
355 | __FUNCTION__, ap->port_no, | |
356 | chan_handle); | |
357 | if (!chan_handle) { | |
358 | err = -ENODEV; | |
359 | goto out; | |
360 | } | |
361 | /* TBD: could also check ACPI object VALID bits */ | |
3a32a8e9 | 362 | drive_handle = acpi_get_child(chan_handle, dev->devno); |
11ef697b KCA |
363 | if (!drive_handle) { |
364 | err = -ENODEV; | |
365 | goto out; | |
366 | } | |
3a32a8e9 TH |
367 | dev_adr = dev->devno; |
368 | dev->obj_handle = drive_handle; | |
11ef697b KCA |
369 | } else { /* for SATA mode */ |
370 | dev_adr = SATA_ADR_RSVD; | |
3a32a8e9 TH |
371 | err = get_sata_adr(gdev, dev_handle, pcidevfn, 0, |
372 | ap, dev, &dev_adr); | |
11ef697b KCA |
373 | } |
374 | if (err < 0 || dev_adr == SATA_ADR_RSVD || | |
3a32a8e9 | 375 | !dev->obj_handle) { |
11ef697b | 376 | if (ata_msg_probe(ap)) |
3a32a8e9 | 377 | ata_dev_printk(dev, KERN_DEBUG, |
11ef697b KCA |
378 | "%s: get_sata/pata_adr failed: " |
379 | "err=%d, dev_adr=%u, obj_handle=0x%p\n", | |
380 | __FUNCTION__, err, dev_adr, | |
3a32a8e9 | 381 | dev->obj_handle); |
11ef697b KCA |
382 | goto out; |
383 | } | |
384 | } | |
385 | ||
386 | /* Setting up output buffer */ | |
387 | output.length = ACPI_ALLOCATE_BUFFER; | |
388 | output.pointer = NULL; /* ACPI-CA sets this; save/free it later */ | |
389 | ||
390 | /* _GTF has no input parameters */ | |
391 | err = -EIO; | |
3a32a8e9 | 392 | status = acpi_evaluate_object(dev->obj_handle, "_GTF", |
11ef697b KCA |
393 | NULL, &output); |
394 | if (ACPI_FAILURE(status)) { | |
395 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 396 | ata_dev_printk(dev, KERN_DEBUG, |
11ef697b KCA |
397 | "%s: Run _GTF error: status = 0x%x\n", |
398 | __FUNCTION__, status); | |
399 | goto out; | |
400 | } | |
401 | ||
402 | if (!output.length || !output.pointer) { | |
403 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 404 | ata_dev_printk(dev, KERN_DEBUG, "%s: Run _GTF: " |
11ef697b KCA |
405 | "length or ptr is NULL (0x%llx, 0x%p)\n", |
406 | __FUNCTION__, | |
407 | (unsigned long long)output.length, | |
408 | output.pointer); | |
409 | kfree(output.pointer); | |
410 | goto out; | |
411 | } | |
412 | ||
413 | out_obj = output.pointer; | |
414 | if (out_obj->type != ACPI_TYPE_BUFFER) { | |
415 | kfree(output.pointer); | |
416 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 417 | ata_dev_printk(dev, KERN_DEBUG, "%s: Run _GTF: " |
11ef697b KCA |
418 | "error: expected object type of " |
419 | " ACPI_TYPE_BUFFER, got 0x%x\n", | |
420 | __FUNCTION__, out_obj->type); | |
421 | err = -ENOENT; | |
422 | goto out; | |
423 | } | |
424 | ||
425 | if (!out_obj->buffer.length || !out_obj->buffer.pointer || | |
426 | out_obj->buffer.length % REGS_PER_GTF) { | |
427 | if (ata_msg_drv(ap)) | |
3a32a8e9 | 428 | ata_dev_printk(dev, KERN_ERR, |
11ef697b KCA |
429 | "%s: unexpected GTF length (%d) or addr (0x%p)\n", |
430 | __FUNCTION__, out_obj->buffer.length, | |
431 | out_obj->buffer.pointer); | |
432 | err = -ENOENT; | |
433 | goto out; | |
434 | } | |
435 | ||
436 | *gtf_length = out_obj->buffer.length; | |
437 | *gtf_address = (unsigned long)out_obj->buffer.pointer; | |
438 | *obj_loc = (unsigned long)out_obj; | |
439 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 440 | ata_dev_printk(dev, KERN_DEBUG, "%s: returning " |
11ef697b KCA |
441 | "gtf_length=%d, gtf_address=0x%lx, obj_loc=0x%lx\n", |
442 | __FUNCTION__, *gtf_length, *gtf_address, *obj_loc); | |
443 | err = 0; | |
444 | out: | |
445 | return err; | |
446 | } | |
447 | ||
448 | /** | |
449 | * taskfile_load_raw - send taskfile registers to host controller | |
3a32a8e9 | 450 | * @dev: target ATA device |
11ef697b KCA |
451 | * @gtf: raw ATA taskfile register set (0x1f1 - 0x1f7) |
452 | * | |
453 | * Outputs ATA taskfile to standard ATA host controller using MMIO | |
454 | * or PIO as indicated by the ATA_FLAG_MMIO flag. | |
455 | * Writes the control, feature, nsect, lbal, lbam, and lbah registers. | |
456 | * Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect, | |
457 | * hob_lbal, hob_lbam, and hob_lbah. | |
458 | * | |
459 | * This function waits for idle (!BUSY and !DRQ) after writing | |
460 | * registers. If the control register has a new value, this | |
461 | * function also waits for idle after writing control and before | |
462 | * writing the remaining registers. | |
463 | * | |
464 | * LOCKING: TBD: | |
465 | * Inherited from caller. | |
466 | */ | |
3a32a8e9 TH |
467 | static void taskfile_load_raw(struct ata_device *dev, |
468 | const struct taskfile_array *gtf) | |
11ef697b | 469 | { |
3a32a8e9 | 470 | struct ata_port *ap = dev->ap; |
fc16c25f JG |
471 | struct ata_taskfile tf; |
472 | unsigned int err; | |
473 | ||
11ef697b | 474 | if (ata_msg_probe(ap)) |
3a32a8e9 | 475 | ata_dev_printk(dev, KERN_DEBUG, "%s: (0x1f1-1f7): hex: " |
11ef697b KCA |
476 | "%02x %02x %02x %02x %02x %02x %02x\n", |
477 | __FUNCTION__, | |
478 | gtf->tfa[0], gtf->tfa[1], gtf->tfa[2], | |
479 | gtf->tfa[3], gtf->tfa[4], gtf->tfa[5], gtf->tfa[6]); | |
480 | ||
481 | if ((gtf->tfa[0] == 0) && (gtf->tfa[1] == 0) && (gtf->tfa[2] == 0) | |
482 | && (gtf->tfa[3] == 0) && (gtf->tfa[4] == 0) && (gtf->tfa[5] == 0) | |
483 | && (gtf->tfa[6] == 0)) | |
484 | return; | |
485 | ||
3a32a8e9 | 486 | ata_tf_init(dev, &tf); |
fc16c25f JG |
487 | |
488 | /* convert gtf to tf */ | |
489 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; /* TBD */ | |
48be6b18 | 490 | tf.protocol = ATA_PROT_NODATA; |
fc16c25f JG |
491 | tf.feature = gtf->tfa[0]; /* 0x1f1 */ |
492 | tf.nsect = gtf->tfa[1]; /* 0x1f2 */ | |
493 | tf.lbal = gtf->tfa[2]; /* 0x1f3 */ | |
494 | tf.lbam = gtf->tfa[3]; /* 0x1f4 */ | |
495 | tf.lbah = gtf->tfa[4]; /* 0x1f5 */ | |
496 | tf.device = gtf->tfa[5]; /* 0x1f6 */ | |
497 | tf.command = gtf->tfa[6]; /* 0x1f7 */ | |
498 | ||
3a32a8e9 | 499 | err = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0); |
fc16c25f | 500 | if (err && ata_msg_probe(ap)) |
3a32a8e9 | 501 | ata_dev_printk(dev, KERN_ERR, |
fc16c25f JG |
502 | "%s: ata_exec_internal failed: %u\n", |
503 | __FUNCTION__, err); | |
11ef697b KCA |
504 | } |
505 | ||
506 | /** | |
507 | * do_drive_set_taskfiles - write the drive taskfile settings from _GTF | |
3a32a8e9 | 508 | * @dev: target ATA device |
11ef697b KCA |
509 | * @gtf_length: total number of bytes of _GTF taskfiles |
510 | * @gtf_address: location of _GTF taskfile arrays | |
511 | * | |
512 | * This applies to both PATA and SATA drives. | |
513 | * | |
514 | * Write {gtf_address, length gtf_length} in groups of | |
515 | * REGS_PER_GTF bytes. | |
516 | */ | |
3a32a8e9 TH |
517 | static int do_drive_set_taskfiles(struct ata_device *dev, |
518 | unsigned int gtf_length, | |
519 | unsigned long gtf_address) | |
11ef697b | 520 | { |
3a32a8e9 TH |
521 | struct ata_port *ap = dev->ap; |
522 | int err = -ENODEV; | |
523 | int gtf_count = gtf_length / REGS_PER_GTF; | |
524 | int ix; | |
11ef697b KCA |
525 | struct taskfile_array *gtf; |
526 | ||
527 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 528 | ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n", |
878d4fed | 529 | __FUNCTION__, ap->port_no); |
11ef697b | 530 | |
3cadbcc0 | 531 | if (libata_noacpi || !(ap->flags & ATA_FLAG_ACPI_SATA)) |
11ef697b KCA |
532 | return 0; |
533 | ||
3a32a8e9 | 534 | if (!ata_dev_enabled(dev) || (ap->flags & ATA_FLAG_DISABLED)) |
11ef697b KCA |
535 | goto out; |
536 | if (!gtf_count) /* shouldn't be here */ | |
537 | goto out; | |
538 | ||
539 | if (gtf_length % REGS_PER_GTF) { | |
540 | if (ata_msg_drv(ap)) | |
3a32a8e9 | 541 | ata_dev_printk(dev, KERN_ERR, |
11ef697b KCA |
542 | "%s: unexpected GTF length (%d)\n", |
543 | __FUNCTION__, gtf_length); | |
544 | goto out; | |
545 | } | |
546 | ||
547 | for (ix = 0; ix < gtf_count; ix++) { | |
548 | gtf = (struct taskfile_array *) | |
549 | (gtf_address + ix * REGS_PER_GTF); | |
550 | ||
551 | /* send all TaskFile registers (0x1f1-0x1f7) *in*that*order* */ | |
3a32a8e9 | 552 | taskfile_load_raw(dev, gtf); |
11ef697b KCA |
553 | } |
554 | ||
555 | err = 0; | |
556 | out: | |
557 | return err; | |
558 | } | |
559 | ||
560 | /** | |
561 | * ata_acpi_exec_tfs - get then write drive taskfile settings | |
562 | * @ap: the ata_port for the drive | |
563 | * | |
564 | * This applies to both PATA and SATA drives. | |
565 | */ | |
566 | int ata_acpi_exec_tfs(struct ata_port *ap) | |
567 | { | |
3a32a8e9 TH |
568 | int ix; |
569 | int ret = 0; | |
570 | unsigned int gtf_length; | |
571 | unsigned long gtf_address; | |
572 | unsigned long obj_loc; | |
11ef697b | 573 | |
d7d0dad6 | 574 | if (libata_noacpi) |
11ef697b | 575 | return 0; |
df33c77e KA |
576 | /* |
577 | * TBD - implement PATA support. For now, | |
578 | * we should not run GTF on PATA devices since some | |
579 | * PATA require execution of GTM/STM before GTF. | |
580 | */ | |
3cadbcc0 | 581 | if (!(ap->flags & ATA_FLAG_ACPI_SATA)) |
df33c77e | 582 | return 0; |
11ef697b KCA |
583 | |
584 | for (ix = 0; ix < ATA_MAX_DEVICES; ix++) { | |
3a32a8e9 TH |
585 | struct ata_device *dev = &ap->device[ix]; |
586 | ||
587 | if (!ata_dev_enabled(dev)) | |
11ef697b KCA |
588 | continue; |
589 | ||
3a32a8e9 TH |
590 | ret = do_drive_get_GTF(dev, >f_length, >f_address, |
591 | &obj_loc); | |
11ef697b KCA |
592 | if (ret < 0) { |
593 | if (ata_msg_probe(ap)) | |
594 | ata_port_printk(ap, KERN_DEBUG, | |
595 | "%s: get_GTF error (%d)\n", | |
596 | __FUNCTION__, ret); | |
597 | break; | |
598 | } | |
599 | ||
3a32a8e9 | 600 | ret = do_drive_set_taskfiles(dev, gtf_length, gtf_address); |
11ef697b KCA |
601 | kfree((void *)obj_loc); |
602 | if (ret < 0) { | |
603 | if (ata_msg_probe(ap)) | |
604 | ata_port_printk(ap, KERN_DEBUG, | |
605 | "%s: set_taskfiles error (%d)\n", | |
606 | __FUNCTION__, ret); | |
607 | break; | |
608 | } | |
609 | } | |
610 | ||
611 | return ret; | |
612 | } | |
613 | ||
7ea1fbc2 KCA |
614 | /** |
615 | * ata_acpi_push_id - send Identify data to drive | |
3a32a8e9 | 616 | * @dev: target ATA device |
7ea1fbc2 KCA |
617 | * |
618 | * _SDD ACPI object: for SATA mode only | |
619 | * Must be after Identify (Packet) Device -- uses its data | |
620 | * ATM this function never returns a failure. It is an optional | |
621 | * method and if it fails for whatever reason, we should still | |
622 | * just keep going. | |
623 | */ | |
3a32a8e9 | 624 | int ata_acpi_push_id(struct ata_device *dev) |
7ea1fbc2 | 625 | { |
3a32a8e9 TH |
626 | struct ata_port *ap = dev->ap; |
627 | acpi_handle handle; | |
628 | acpi_integer pcidevfn; | |
629 | int err; | |
630 | struct device *gdev = ap->host->dev; | |
631 | u32 dev_adr; | |
632 | acpi_status status; | |
633 | struct acpi_object_list input; | |
634 | union acpi_object in_params[1]; | |
7ea1fbc2 | 635 | |
d7d0dad6 | 636 | if (libata_noacpi) |
7ea1fbc2 KCA |
637 | return 0; |
638 | ||
639 | if (ata_msg_probe(ap)) | |
3a32a8e9 TH |
640 | ata_dev_printk(dev, KERN_DEBUG, "%s: ix = %d, port#: %d\n", |
641 | __FUNCTION__, dev->devno, ap->port_no); | |
7ea1fbc2 KCA |
642 | |
643 | /* Don't continue if not a SATA device. */ | |
3cadbcc0 | 644 | if (!(ap->flags & ATA_FLAG_ACPI_SATA)) { |
7ea1fbc2 | 645 | if (ata_msg_probe(ap)) |
3a32a8e9 | 646 | ata_dev_printk(dev, KERN_DEBUG, |
7ea1fbc2 KCA |
647 | "%s: Not a SATA device\n", __FUNCTION__); |
648 | goto out; | |
649 | } | |
650 | ||
651 | /* Don't continue if device has no _ADR method. | |
652 | * _SDD is intended for known motherboard devices. */ | |
3a32a8e9 | 653 | err = sata_get_dev_handle(gdev, &handle, &pcidevfn); |
7ea1fbc2 KCA |
654 | if (err < 0) { |
655 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 656 | ata_dev_printk(dev, KERN_DEBUG, |
7ea1fbc2 KCA |
657 | "%s: sata_get_dev_handle failed (%d\n", |
658 | __FUNCTION__, err); | |
659 | goto out; | |
660 | } | |
661 | ||
662 | /* Get this drive's _ADR info, if not already known */ | |
3a32a8e9 | 663 | if (!dev->obj_handle) { |
7ea1fbc2 | 664 | dev_adr = SATA_ADR_RSVD; |
3a32a8e9 | 665 | err = get_sata_adr(gdev, handle, pcidevfn, dev->devno, ap, dev, |
7ea1fbc2 KCA |
666 | &dev_adr); |
667 | if (err < 0 || dev_adr == SATA_ADR_RSVD || | |
3a32a8e9 | 668 | !dev->obj_handle) { |
7ea1fbc2 | 669 | if (ata_msg_probe(ap)) |
3a32a8e9 | 670 | ata_dev_printk(dev, KERN_DEBUG, |
7ea1fbc2 KCA |
671 | "%s: get_sata_adr failed: " |
672 | "err=%d, dev_adr=%u, obj_handle=0x%p\n", | |
673 | __FUNCTION__, err, dev_adr, | |
3a32a8e9 | 674 | dev->obj_handle); |
7ea1fbc2 KCA |
675 | goto out; |
676 | } | |
677 | } | |
678 | ||
679 | /* Give the drive Identify data to the drive via the _SDD method */ | |
680 | /* _SDD: set up input parameters */ | |
681 | input.count = 1; | |
682 | input.pointer = in_params; | |
683 | in_params[0].type = ACPI_TYPE_BUFFER; | |
3a32a8e9 TH |
684 | in_params[0].buffer.length = sizeof(dev->id[0]) * ATA_ID_WORDS; |
685 | in_params[0].buffer.pointer = (u8 *)dev->id; | |
7ea1fbc2 KCA |
686 | /* Output buffer: _SDD has no output */ |
687 | ||
688 | /* It's OK for _SDD to be missing too. */ | |
3a32a8e9 TH |
689 | swap_buf_le16(dev->id, ATA_ID_WORDS); |
690 | status = acpi_evaluate_object(dev->obj_handle, "_SDD", &input, NULL); | |
691 | swap_buf_le16(dev->id, ATA_ID_WORDS); | |
7ea1fbc2 KCA |
692 | |
693 | err = ACPI_FAILURE(status) ? -EIO : 0; | |
694 | if (err < 0) { | |
695 | if (ata_msg_probe(ap)) | |
3a32a8e9 | 696 | ata_dev_printk(dev, KERN_DEBUG, |
878d4fed TH |
697 | "%s _SDD error: status = 0x%x\n", |
698 | __FUNCTION__, status); | |
7ea1fbc2 KCA |
699 | } |
700 | ||
701 | /* always return success */ | |
702 | out: | |
703 | return 0; | |
704 | } | |
705 | ||
706 |