1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * pnpacpi -- PnP ACPI driver |
4 | * |
5 | * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr> |
6 | * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com> |
7 | * Copyright (C) 2008 Hewlett-Packard Development Company, L.P. |
8 | * Bjorn Helgaas <bjorn.helgaas@hp.com> |
9 | */ |
10 | #include <linux/kernel.h> |
11 | #include <linux/acpi.h> |
12 | #include <linux/pci.h> |
13 | #include <linux/pnp.h> |
14 | #include <linux/slab.h> |
15 | #include "../base.h" |
16 | #include "pnpacpi.h" |
17 | |
18 | static void decode_irq_flags(struct pnp_dev *dev, int flags, u8 *triggering, |
19 | u8 *polarity, u8 *shareable) |
20 | { |
21 | switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL | |
22 | IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE)) { |
23 | case IORESOURCE_IRQ_LOWLEVEL: |
24 | *triggering = ACPI_LEVEL_SENSITIVE; |
25 | *polarity = ACPI_ACTIVE_LOW; |
26 | break; |
27 | case IORESOURCE_IRQ_HIGHLEVEL: |
28 | *triggering = ACPI_LEVEL_SENSITIVE; |
29 | *polarity = ACPI_ACTIVE_HIGH; |
30 | break; |
31 | case IORESOURCE_IRQ_LOWEDGE: |
32 | *triggering = ACPI_EDGE_SENSITIVE; |
33 | *polarity = ACPI_ACTIVE_LOW; |
34 | break; |
35 | case IORESOURCE_IRQ_HIGHEDGE: |
36 | *triggering = ACPI_EDGE_SENSITIVE; |
37 | *polarity = ACPI_ACTIVE_HIGH; |
38 | break; |
39 | default: |
40 | dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n" , |
41 | flags); |
42 | *triggering = ACPI_EDGE_SENSITIVE; |
43 | *polarity = ACPI_ACTIVE_HIGH; |
44 | break; |
45 | } |
46 | |
47 | if (flags & IORESOURCE_IRQ_SHAREABLE) |
48 | *shareable = ACPI_SHARED; |
49 | else |
50 | *shareable = ACPI_EXCLUSIVE; |
51 | } |
52 | |
53 | static int dma_flags(struct pnp_dev *dev, int type, int bus_master, |
54 | int transfer) |
55 | { |
56 | int flags = 0; |
57 | |
58 | if (bus_master) |
59 | flags |= IORESOURCE_DMA_MASTER; |
60 | switch (type) { |
61 | case ACPI_COMPATIBILITY: |
62 | flags |= IORESOURCE_DMA_COMPATIBLE; |
63 | break; |
64 | case ACPI_TYPE_A: |
65 | flags |= IORESOURCE_DMA_TYPEA; |
66 | break; |
67 | case ACPI_TYPE_B: |
68 | flags |= IORESOURCE_DMA_TYPEB; |
69 | break; |
70 | case ACPI_TYPE_F: |
71 | flags |= IORESOURCE_DMA_TYPEF; |
72 | break; |
73 | default: |
74 | /* Set a default value ? */ |
75 | flags |= IORESOURCE_DMA_COMPATIBLE; |
76 | dev_err(&dev->dev, "invalid DMA type %d\n" , type); |
77 | } |
78 | switch (transfer) { |
79 | case ACPI_TRANSFER_8: |
80 | flags |= IORESOURCE_DMA_8BIT; |
81 | break; |
82 | case ACPI_TRANSFER_8_16: |
83 | flags |= IORESOURCE_DMA_8AND16BIT; |
84 | break; |
85 | case ACPI_TRANSFER_16: |
86 | flags |= IORESOURCE_DMA_16BIT; |
87 | break; |
88 | default: |
89 | /* Set a default value ? */ |
90 | flags |= IORESOURCE_DMA_8AND16BIT; |
91 | dev_err(&dev->dev, "invalid DMA transfer type %d\n" , transfer); |
92 | } |
93 | |
94 | return flags; |
95 | } |
96 | |
97 | /* |
98 | * Allocated Resources |
99 | */ |
100 | |
101 | static void pnpacpi_add_irqresource(struct pnp_dev *dev, struct resource *r) |
102 | { |
103 | if (!(r->flags & IORESOURCE_DISABLED)) |
104 | pcibios_penalize_isa_irq(irq: r->start, active: 1); |
105 | |
106 | pnp_add_resource(dev, res: r); |
107 | } |
108 | |
109 | /* |
110 | * Device CSRs that do not appear in PCI config space should be described |
111 | * via ACPI. This would normally be done with Address Space Descriptors |
112 | * marked as "consumer-only," but old versions of Windows and Linux ignore |
113 | * the producer/consumer flag, so HP invented a vendor-defined resource to |
114 | * describe the location and size of CSR space. |
115 | */ |
116 | static struct acpi_vendor_uuid hp_ccsr_uuid = { |
117 | .subtype = 2, |
118 | .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a, |
119 | 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad }, |
120 | }; |
121 | |
122 | static int vendor_resource_matches(struct pnp_dev *dev, |
123 | struct acpi_resource_vendor_typed *vendor, |
124 | struct acpi_vendor_uuid *match, |
125 | int expected_len) |
126 | { |
127 | int uuid_len = sizeof(vendor->uuid); |
128 | u8 uuid_subtype = vendor->uuid_subtype; |
129 | u8 *uuid = vendor->uuid; |
130 | int actual_len; |
131 | |
132 | /* byte_length includes uuid_subtype and uuid */ |
133 | actual_len = vendor->byte_length - uuid_len - 1; |
134 | |
135 | if (uuid_subtype == match->subtype && |
136 | uuid_len == sizeof(match->data) && |
137 | memcmp(p: uuid, q: match->data, size: uuid_len) == 0) { |
138 | if (expected_len && expected_len != actual_len) { |
139 | dev_err(&dev->dev, |
140 | "wrong vendor descriptor size; expected %d, found %d bytes\n" , |
141 | expected_len, actual_len); |
142 | return 0; |
143 | } |
144 | |
145 | return 1; |
146 | } |
147 | |
148 | return 0; |
149 | } |
150 | |
151 | static void pnpacpi_parse_allocated_vendor(struct pnp_dev *dev, |
152 | struct acpi_resource_vendor_typed *vendor) |
153 | { |
154 | struct { u64 start, length; } range; |
155 | |
156 | if (vendor_resource_matches(dev, vendor, match: &hp_ccsr_uuid, |
157 | expected_len: sizeof(range))) { |
158 | memcpy(&range, vendor->byte_data, sizeof(range)); |
159 | pnp_add_mem_resource(dev, start: range.start, end: range.start + |
160 | range.length - 1, flags: 0); |
161 | } |
162 | } |
163 | |
164 | static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, |
165 | void *data) |
166 | { |
167 | struct pnp_dev *dev = data; |
168 | struct acpi_resource_dma *dma; |
169 | struct acpi_resource_vendor_typed *vendor_typed; |
170 | struct acpi_resource_gpio *gpio; |
171 | struct resource_win win = {{0}, 0}; |
172 | struct resource *r = &win.res; |
173 | int i, flags; |
174 | |
175 | if (acpi_dev_resource_address_space(ares: res, win: &win) |
176 | || acpi_dev_resource_ext_address_space(ares: res, win: &win)) { |
177 | pnp_add_resource(dev, res: &win.res); |
178 | return AE_OK; |
179 | } |
180 | |
181 | r->flags = 0; |
182 | if (acpi_dev_resource_interrupt(ares: res, index: 0, res: r)) { |
183 | pnpacpi_add_irqresource(dev, r); |
184 | for (i = 1; acpi_dev_resource_interrupt(ares: res, index: i, res: r); i++) |
185 | pnpacpi_add_irqresource(dev, r); |
186 | |
187 | if (i > 1) { |
188 | /* |
189 | * The IRQ encoder puts a single interrupt in each |
190 | * descriptor, so if a _CRS descriptor has more than |
191 | * one interrupt, we won't be able to re-encode it. |
192 | */ |
193 | if (pnp_can_write(dev)) { |
194 | dev_warn(&dev->dev, |
195 | "multiple interrupts in _CRS descriptor; configuration can't be changed\n" ); |
196 | dev->capabilities &= ~PNP_WRITE; |
197 | } |
198 | } |
199 | return AE_OK; |
200 | } else if (acpi_gpio_get_irq_resource(ares: res, agpio: &gpio)) { |
201 | /* |
202 | * If the resource is GpioInt() type then extract the IRQ |
203 | * from GPIO resource and fill it into IRQ resource type. |
204 | */ |
205 | i = acpi_dev_gpio_irq_get(adev: dev->data, index: 0); |
206 | if (i >= 0) { |
207 | flags = acpi_dev_irq_flags(triggering: gpio->triggering, |
208 | polarity: gpio->polarity, |
209 | shareable: gpio->shareable, |
210 | wake_capable: gpio->wake_capable); |
211 | } else { |
212 | flags = IORESOURCE_DISABLED; |
213 | } |
214 | pnp_add_irq_resource(dev, irq: i, flags); |
215 | return AE_OK; |
216 | } else if (r->flags & IORESOURCE_DISABLED) { |
217 | pnp_add_irq_resource(dev, irq: 0, IORESOURCE_DISABLED); |
218 | return AE_OK; |
219 | } |
220 | |
221 | switch (res->type) { |
222 | case ACPI_RESOURCE_TYPE_MEMORY24: |
223 | case ACPI_RESOURCE_TYPE_MEMORY32: |
224 | case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: |
225 | if (acpi_dev_resource_memory(ares: res, res: r)) |
226 | pnp_add_resource(dev, res: r); |
227 | break; |
228 | case ACPI_RESOURCE_TYPE_IO: |
229 | case ACPI_RESOURCE_TYPE_FIXED_IO: |
230 | if (acpi_dev_resource_io(ares: res, res: r)) |
231 | pnp_add_resource(dev, res: r); |
232 | break; |
233 | case ACPI_RESOURCE_TYPE_DMA: |
234 | dma = &res->data.dma; |
235 | if (dma->channel_count > 0 && dma->channels[0] != (u8) -1) |
236 | flags = dma_flags(dev, type: dma->type, bus_master: dma->bus_master, |
237 | transfer: dma->transfer); |
238 | else |
239 | flags = IORESOURCE_DISABLED; |
240 | pnp_add_dma_resource(dev, dma: dma->channels[0], flags); |
241 | break; |
242 | |
243 | case ACPI_RESOURCE_TYPE_START_DEPENDENT: |
244 | case ACPI_RESOURCE_TYPE_END_DEPENDENT: |
245 | break; |
246 | |
247 | case ACPI_RESOURCE_TYPE_VENDOR: |
248 | vendor_typed = &res->data.vendor_typed; |
249 | pnpacpi_parse_allocated_vendor(dev, vendor: vendor_typed); |
250 | break; |
251 | |
252 | case ACPI_RESOURCE_TYPE_END_TAG: |
253 | break; |
254 | |
255 | case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: |
256 | break; |
257 | |
258 | case ACPI_RESOURCE_TYPE_SERIAL_BUS: |
259 | /* serial bus connections (I2C/SPI/UART) are not pnp */ |
260 | break; |
261 | |
262 | default: |
263 | dev_warn(&dev->dev, "unknown resource type %d in _CRS\n" , |
264 | res->type); |
265 | return AE_ERROR; |
266 | } |
267 | |
268 | return AE_OK; |
269 | } |
270 | |
271 | int pnpacpi_parse_allocated_resource(struct pnp_dev *dev) |
272 | { |
273 | struct acpi_device *acpi_dev = dev->data; |
274 | acpi_handle handle = acpi_dev->handle; |
275 | acpi_status status; |
276 | |
277 | pnp_dbg(&dev->dev, "parse allocated resources\n" ); |
278 | |
279 | pnp_init_resources(dev); |
280 | |
281 | status = acpi_walk_resources(device: handle, METHOD_NAME__CRS, |
282 | user_function: pnpacpi_allocated_resource, context: dev); |
283 | |
284 | if (ACPI_FAILURE(status)) { |
285 | if (status != AE_NOT_FOUND) |
286 | dev_err(&dev->dev, "can't evaluate _CRS: %d" , status); |
287 | return -EPERM; |
288 | } |
289 | return 0; |
290 | } |
291 | |
292 | static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev, |
293 | unsigned int option_flags, |
294 | struct acpi_resource_dma *p) |
295 | { |
296 | int i; |
297 | unsigned char map = 0, flags; |
298 | |
299 | for (i = 0; i < p->channel_count; i++) |
300 | map |= 1 << p->channels[i]; |
301 | |
302 | flags = dma_flags(dev, type: p->type, bus_master: p->bus_master, transfer: p->transfer); |
303 | pnp_register_dma_resource(dev, option_flags, map, flags); |
304 | } |
305 | |
306 | static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev, |
307 | unsigned int option_flags, |
308 | struct acpi_resource_irq *p) |
309 | { |
310 | int i; |
311 | pnp_irq_mask_t map; |
312 | unsigned char flags; |
313 | |
314 | bitmap_zero(dst: map.bits, PNP_IRQ_NR); |
315 | for (i = 0; i < p->interrupt_count; i++) |
316 | if (p->interrupts[i]) |
317 | __set_bit(p->interrupts[i], map.bits); |
318 | |
319 | flags = acpi_dev_irq_flags(triggering: p->triggering, polarity: p->polarity, shareable: p->shareable, wake_capable: p->wake_capable); |
320 | pnp_register_irq_resource(dev, option_flags, map: &map, flags); |
321 | } |
322 | |
323 | static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev, |
324 | unsigned int option_flags, |
325 | struct acpi_resource_extended_irq *p) |
326 | { |
327 | int i; |
328 | pnp_irq_mask_t map; |
329 | unsigned char flags; |
330 | |
331 | bitmap_zero(dst: map.bits, PNP_IRQ_NR); |
332 | for (i = 0; i < p->interrupt_count; i++) { |
333 | if (p->interrupts[i]) { |
334 | if (p->interrupts[i] < PNP_IRQ_NR) |
335 | __set_bit(p->interrupts[i], map.bits); |
336 | else |
337 | dev_err(&dev->dev, |
338 | "ignoring IRQ %d option (too large for %d entry bitmap)\n" , |
339 | p->interrupts[i], PNP_IRQ_NR); |
340 | } |
341 | } |
342 | |
343 | flags = acpi_dev_irq_flags(triggering: p->triggering, polarity: p->polarity, shareable: p->shareable, wake_capable: p->wake_capable); |
344 | pnp_register_irq_resource(dev, option_flags, map: &map, flags); |
345 | } |
346 | |
347 | static __init void pnpacpi_parse_port_option(struct pnp_dev *dev, |
348 | unsigned int option_flags, |
349 | struct acpi_resource_io *io) |
350 | { |
351 | unsigned char flags = 0; |
352 | |
353 | if (io->io_decode == ACPI_DECODE_16) |
354 | flags = IORESOURCE_IO_16BIT_ADDR; |
355 | pnp_register_port_resource(dev, option_flags, min: io->minimum, max: io->maximum, |
356 | align: io->alignment, size: io->address_length, flags); |
357 | } |
358 | |
359 | static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev, |
360 | unsigned int option_flags, |
361 | struct acpi_resource_fixed_io *io) |
362 | { |
363 | pnp_register_port_resource(dev, option_flags, min: io->address, max: io->address, |
364 | align: 0, size: io->address_length, IORESOURCE_IO_FIXED); |
365 | } |
366 | |
367 | static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev, |
368 | unsigned int option_flags, |
369 | struct acpi_resource_memory24 *p) |
370 | { |
371 | unsigned char flags = 0; |
372 | |
373 | if (p->write_protect == ACPI_READ_WRITE_MEMORY) |
374 | flags = IORESOURCE_MEM_WRITEABLE; |
375 | pnp_register_mem_resource(dev, option_flags, min: p->minimum, max: p->maximum, |
376 | align: p->alignment, size: p->address_length, flags); |
377 | } |
378 | |
379 | static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev, |
380 | unsigned int option_flags, |
381 | struct acpi_resource_memory32 *p) |
382 | { |
383 | unsigned char flags = 0; |
384 | |
385 | if (p->write_protect == ACPI_READ_WRITE_MEMORY) |
386 | flags = IORESOURCE_MEM_WRITEABLE; |
387 | pnp_register_mem_resource(dev, option_flags, min: p->minimum, max: p->maximum, |
388 | align: p->alignment, size: p->address_length, flags); |
389 | } |
390 | |
391 | static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev, |
392 | unsigned int option_flags, |
393 | struct acpi_resource_fixed_memory32 *p) |
394 | { |
395 | unsigned char flags = 0; |
396 | |
397 | if (p->write_protect == ACPI_READ_WRITE_MEMORY) |
398 | flags = IORESOURCE_MEM_WRITEABLE; |
399 | pnp_register_mem_resource(dev, option_flags, min: p->address, max: p->address, |
400 | align: 0, size: p->address_length, flags); |
401 | } |
402 | |
403 | static __init void pnpacpi_parse_address_option(struct pnp_dev *dev, |
404 | unsigned int option_flags, |
405 | struct acpi_resource *r) |
406 | { |
407 | struct acpi_resource_address64 addr, *p = &addr; |
408 | acpi_status status; |
409 | unsigned char flags = 0; |
410 | |
411 | status = acpi_resource_to_address64(resource: r, out: p); |
412 | if (ACPI_FAILURE(status)) { |
413 | dev_warn(&dev->dev, "can't convert resource type %d\n" , |
414 | r->type); |
415 | return; |
416 | } |
417 | |
418 | if (p->resource_type == ACPI_MEMORY_RANGE) { |
419 | if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY) |
420 | flags = IORESOURCE_MEM_WRITEABLE; |
421 | pnp_register_mem_resource(dev, option_flags, min: p->address.minimum, |
422 | max: p->address.minimum, align: 0, size: p->address.address_length, |
423 | flags); |
424 | } else if (p->resource_type == ACPI_IO_RANGE) |
425 | pnp_register_port_resource(dev, option_flags, min: p->address.minimum, |
426 | max: p->address.minimum, align: 0, size: p->address.address_length, |
427 | IORESOURCE_IO_FIXED); |
428 | } |
429 | |
430 | static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev, |
431 | unsigned int option_flags, |
432 | struct acpi_resource *r) |
433 | { |
434 | struct acpi_resource_extended_address64 *p = &r->data.ext_address64; |
435 | unsigned char flags = 0; |
436 | |
437 | if (p->resource_type == ACPI_MEMORY_RANGE) { |
438 | if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY) |
439 | flags = IORESOURCE_MEM_WRITEABLE; |
440 | pnp_register_mem_resource(dev, option_flags, min: p->address.minimum, |
441 | max: p->address.minimum, align: 0, size: p->address.address_length, |
442 | flags); |
443 | } else if (p->resource_type == ACPI_IO_RANGE) |
444 | pnp_register_port_resource(dev, option_flags, min: p->address.minimum, |
445 | max: p->address.minimum, align: 0, size: p->address.address_length, |
446 | IORESOURCE_IO_FIXED); |
447 | } |
448 | |
449 | struct acpipnp_parse_option_s { |
450 | struct pnp_dev *dev; |
451 | unsigned int option_flags; |
452 | }; |
453 | |
454 | static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res, |
455 | void *data) |
456 | { |
457 | int priority; |
458 | struct acpipnp_parse_option_s *parse_data = data; |
459 | struct pnp_dev *dev = parse_data->dev; |
460 | unsigned int option_flags = parse_data->option_flags; |
461 | |
462 | switch (res->type) { |
463 | case ACPI_RESOURCE_TYPE_IRQ: |
464 | pnpacpi_parse_irq_option(dev, option_flags, p: &res->data.irq); |
465 | break; |
466 | |
467 | case ACPI_RESOURCE_TYPE_DMA: |
468 | pnpacpi_parse_dma_option(dev, option_flags, p: &res->data.dma); |
469 | break; |
470 | |
471 | case ACPI_RESOURCE_TYPE_START_DEPENDENT: |
472 | switch (res->data.start_dpf.compatibility_priority) { |
473 | case ACPI_GOOD_CONFIGURATION: |
474 | priority = PNP_RES_PRIORITY_PREFERRED; |
475 | break; |
476 | |
477 | case ACPI_ACCEPTABLE_CONFIGURATION: |
478 | priority = PNP_RES_PRIORITY_ACCEPTABLE; |
479 | break; |
480 | |
481 | case ACPI_SUB_OPTIMAL_CONFIGURATION: |
482 | priority = PNP_RES_PRIORITY_FUNCTIONAL; |
483 | break; |
484 | default: |
485 | priority = PNP_RES_PRIORITY_INVALID; |
486 | break; |
487 | } |
488 | parse_data->option_flags = pnp_new_dependent_set(dev, priority); |
489 | break; |
490 | |
491 | case ACPI_RESOURCE_TYPE_END_DEPENDENT: |
492 | parse_data->option_flags = 0; |
493 | break; |
494 | |
495 | case ACPI_RESOURCE_TYPE_IO: |
496 | pnpacpi_parse_port_option(dev, option_flags, io: &res->data.io); |
497 | break; |
498 | |
499 | case ACPI_RESOURCE_TYPE_FIXED_IO: |
500 | pnpacpi_parse_fixed_port_option(dev, option_flags, |
501 | io: &res->data.fixed_io); |
502 | break; |
503 | |
504 | case ACPI_RESOURCE_TYPE_VENDOR: |
505 | case ACPI_RESOURCE_TYPE_END_TAG: |
506 | break; |
507 | |
508 | case ACPI_RESOURCE_TYPE_MEMORY24: |
509 | pnpacpi_parse_mem24_option(dev, option_flags, |
510 | p: &res->data.memory24); |
511 | break; |
512 | |
513 | case ACPI_RESOURCE_TYPE_MEMORY32: |
514 | pnpacpi_parse_mem32_option(dev, option_flags, |
515 | p: &res->data.memory32); |
516 | break; |
517 | |
518 | case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: |
519 | pnpacpi_parse_fixed_mem32_option(dev, option_flags, |
520 | p: &res->data.fixed_memory32); |
521 | break; |
522 | |
523 | case ACPI_RESOURCE_TYPE_ADDRESS16: |
524 | case ACPI_RESOURCE_TYPE_ADDRESS32: |
525 | case ACPI_RESOURCE_TYPE_ADDRESS64: |
526 | pnpacpi_parse_address_option(dev, option_flags, r: res); |
527 | break; |
528 | |
529 | case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: |
530 | pnpacpi_parse_ext_address_option(dev, option_flags, r: res); |
531 | break; |
532 | |
533 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: |
534 | pnpacpi_parse_ext_irq_option(dev, option_flags, |
535 | p: &res->data.extended_irq); |
536 | break; |
537 | |
538 | case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: |
539 | break; |
540 | |
541 | default: |
542 | dev_warn(&dev->dev, "unknown resource type %d in _PRS\n" , |
543 | res->type); |
544 | return AE_ERROR; |
545 | } |
546 | |
547 | return AE_OK; |
548 | } |
549 | |
550 | int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev) |
551 | { |
552 | struct acpi_device *acpi_dev = dev->data; |
553 | acpi_handle handle = acpi_dev->handle; |
554 | acpi_status status; |
555 | struct acpipnp_parse_option_s parse_data; |
556 | |
557 | pnp_dbg(&dev->dev, "parse resource options\n" ); |
558 | |
559 | parse_data.dev = dev; |
560 | parse_data.option_flags = 0; |
561 | |
562 | status = acpi_walk_resources(device: handle, METHOD_NAME__PRS, |
563 | user_function: pnpacpi_option_resource, context: &parse_data); |
564 | |
565 | if (ACPI_FAILURE(status)) { |
566 | if (status != AE_NOT_FOUND) |
567 | dev_err(&dev->dev, "can't evaluate _PRS: %d" , status); |
568 | return -EPERM; |
569 | } |
570 | return 0; |
571 | } |
572 | |
573 | static int pnpacpi_supported_resource(struct acpi_resource *res) |
574 | { |
575 | switch (res->type) { |
576 | case ACPI_RESOURCE_TYPE_IRQ: |
577 | case ACPI_RESOURCE_TYPE_DMA: |
578 | case ACPI_RESOURCE_TYPE_IO: |
579 | case ACPI_RESOURCE_TYPE_FIXED_IO: |
580 | case ACPI_RESOURCE_TYPE_MEMORY24: |
581 | case ACPI_RESOURCE_TYPE_MEMORY32: |
582 | case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: |
583 | case ACPI_RESOURCE_TYPE_ADDRESS16: |
584 | case ACPI_RESOURCE_TYPE_ADDRESS32: |
585 | case ACPI_RESOURCE_TYPE_ADDRESS64: |
586 | case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: |
587 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: |
588 | return 1; |
589 | } |
590 | return 0; |
591 | } |
592 | |
593 | /* |
594 | * Set resource |
595 | */ |
596 | static acpi_status pnpacpi_count_resources(struct acpi_resource *res, |
597 | void *data) |
598 | { |
599 | int *res_cnt = data; |
600 | |
601 | if (pnpacpi_supported_resource(res)) |
602 | (*res_cnt)++; |
603 | return AE_OK; |
604 | } |
605 | |
606 | static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data) |
607 | { |
608 | struct acpi_resource **resource = data; |
609 | |
610 | if (pnpacpi_supported_resource(res)) { |
611 | (*resource)->type = res->type; |
612 | (*resource)->length = sizeof(struct acpi_resource); |
613 | if (res->type == ACPI_RESOURCE_TYPE_IRQ) |
614 | (*resource)->data.irq.descriptor_length = |
615 | res->data.irq.descriptor_length; |
616 | (*resource)++; |
617 | } |
618 | |
619 | return AE_OK; |
620 | } |
621 | |
622 | int pnpacpi_build_resource_template(struct pnp_dev *dev, |
623 | struct acpi_buffer *buffer) |
624 | { |
625 | struct acpi_device *acpi_dev = dev->data; |
626 | acpi_handle handle = acpi_dev->handle; |
627 | struct acpi_resource *resource; |
628 | int res_cnt = 0; |
629 | acpi_status status; |
630 | |
631 | status = acpi_walk_resources(device: handle, METHOD_NAME__CRS, |
632 | user_function: pnpacpi_count_resources, context: &res_cnt); |
633 | if (ACPI_FAILURE(status)) { |
634 | dev_err(&dev->dev, "can't evaluate _CRS: %d\n" , status); |
635 | return -EINVAL; |
636 | } |
637 | if (!res_cnt) |
638 | return -EINVAL; |
639 | buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1; |
640 | buffer->pointer = kzalloc(size: buffer->length - 1, GFP_KERNEL); |
641 | if (!buffer->pointer) |
642 | return -ENOMEM; |
643 | |
644 | resource = (struct acpi_resource *)buffer->pointer; |
645 | status = acpi_walk_resources(device: handle, METHOD_NAME__CRS, |
646 | user_function: pnpacpi_type_resources, context: &resource); |
647 | if (ACPI_FAILURE(status)) { |
648 | kfree(objp: buffer->pointer); |
649 | dev_err(&dev->dev, "can't evaluate _CRS: %d\n" , status); |
650 | return -EINVAL; |
651 | } |
652 | /* resource will pointer the end resource now */ |
653 | resource->type = ACPI_RESOURCE_TYPE_END_TAG; |
654 | resource->length = sizeof(struct acpi_resource); |
655 | |
656 | return 0; |
657 | } |
658 | |
659 | static void pnpacpi_encode_irq(struct pnp_dev *dev, |
660 | struct acpi_resource *resource, |
661 | struct resource *p) |
662 | { |
663 | struct acpi_resource_irq *irq = &resource->data.irq; |
664 | u8 triggering, polarity, shareable; |
665 | |
666 | if (!pnp_resource_enabled(res: p)) { |
667 | irq->interrupt_count = 0; |
668 | pnp_dbg(&dev->dev, " encode irq (%s)\n" , |
669 | p ? "disabled" : "missing" ); |
670 | return; |
671 | } |
672 | |
673 | decode_irq_flags(dev, flags: p->flags, triggering: &triggering, polarity: &polarity, shareable: &shareable); |
674 | irq->triggering = triggering; |
675 | irq->polarity = polarity; |
676 | irq->shareable = shareable; |
677 | irq->interrupt_count = 1; |
678 | irq->interrupts[0] = p->start; |
679 | |
680 | pnp_dbg(&dev->dev, " encode irq %d %s %s %s (%d-byte descriptor)\n" , |
681 | (int) p->start, |
682 | triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge" , |
683 | polarity == ACPI_ACTIVE_LOW ? "low" : "high" , |
684 | irq->shareable == ACPI_SHARED ? "shared" : "exclusive" , |
685 | irq->descriptor_length); |
686 | } |
687 | |
688 | static void pnpacpi_encode_ext_irq(struct pnp_dev *dev, |
689 | struct acpi_resource *resource, |
690 | struct resource *p) |
691 | { |
692 | struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq; |
693 | u8 triggering, polarity, shareable; |
694 | |
695 | if (!pnp_resource_enabled(res: p)) { |
696 | extended_irq->interrupt_count = 0; |
697 | pnp_dbg(&dev->dev, " encode extended irq (%s)\n" , |
698 | p ? "disabled" : "missing" ); |
699 | return; |
700 | } |
701 | |
702 | decode_irq_flags(dev, flags: p->flags, triggering: &triggering, polarity: &polarity, shareable: &shareable); |
703 | extended_irq->producer_consumer = ACPI_CONSUMER; |
704 | extended_irq->triggering = triggering; |
705 | extended_irq->polarity = polarity; |
706 | extended_irq->shareable = shareable; |
707 | extended_irq->interrupt_count = 1; |
708 | extended_irq->interrupts[0] = p->start; |
709 | |
710 | pnp_dbg(&dev->dev, " encode irq %d %s %s %s\n" , (int) p->start, |
711 | triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge" , |
712 | polarity == ACPI_ACTIVE_LOW ? "low" : "high" , |
713 | extended_irq->shareable == ACPI_SHARED ? "shared" : "exclusive" ); |
714 | } |
715 | |
716 | static void pnpacpi_encode_dma(struct pnp_dev *dev, |
717 | struct acpi_resource *resource, |
718 | struct resource *p) |
719 | { |
720 | struct acpi_resource_dma *dma = &resource->data.dma; |
721 | |
722 | if (!pnp_resource_enabled(res: p)) { |
723 | dma->channel_count = 0; |
724 | pnp_dbg(&dev->dev, " encode dma (%s)\n" , |
725 | p ? "disabled" : "missing" ); |
726 | return; |
727 | } |
728 | |
729 | /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */ |
730 | switch (p->flags & IORESOURCE_DMA_SPEED_MASK) { |
731 | case IORESOURCE_DMA_TYPEA: |
732 | dma->type = ACPI_TYPE_A; |
733 | break; |
734 | case IORESOURCE_DMA_TYPEB: |
735 | dma->type = ACPI_TYPE_B; |
736 | break; |
737 | case IORESOURCE_DMA_TYPEF: |
738 | dma->type = ACPI_TYPE_F; |
739 | break; |
740 | default: |
741 | dma->type = ACPI_COMPATIBILITY; |
742 | } |
743 | |
744 | switch (p->flags & IORESOURCE_DMA_TYPE_MASK) { |
745 | case IORESOURCE_DMA_8BIT: |
746 | dma->transfer = ACPI_TRANSFER_8; |
747 | break; |
748 | case IORESOURCE_DMA_8AND16BIT: |
749 | dma->transfer = ACPI_TRANSFER_8_16; |
750 | break; |
751 | default: |
752 | dma->transfer = ACPI_TRANSFER_16; |
753 | } |
754 | |
755 | dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER); |
756 | dma->channel_count = 1; |
757 | dma->channels[0] = p->start; |
758 | |
759 | pnp_dbg(&dev->dev, " encode dma %d " |
760 | "type %#x transfer %#x master %d\n" , |
761 | (int) p->start, dma->type, dma->transfer, dma->bus_master); |
762 | } |
763 | |
764 | static void pnpacpi_encode_io(struct pnp_dev *dev, |
765 | struct acpi_resource *resource, |
766 | struct resource *p) |
767 | { |
768 | struct acpi_resource_io *io = &resource->data.io; |
769 | |
770 | if (pnp_resource_enabled(res: p)) { |
771 | /* Note: pnp_assign_port copies pnp_port->flags into p->flags */ |
772 | io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ? |
773 | ACPI_DECODE_16 : ACPI_DECODE_10; |
774 | io->minimum = p->start; |
775 | io->maximum = p->end; |
776 | io->alignment = 0; /* Correct? */ |
777 | io->address_length = resource_size(res: p); |
778 | } else { |
779 | io->minimum = 0; |
780 | io->address_length = 0; |
781 | } |
782 | |
783 | pnp_dbg(&dev->dev, " encode io %#x-%#x decode %#x\n" , io->minimum, |
784 | io->minimum + io->address_length - 1, io->io_decode); |
785 | } |
786 | |
787 | static void pnpacpi_encode_fixed_io(struct pnp_dev *dev, |
788 | struct acpi_resource *resource, |
789 | struct resource *p) |
790 | { |
791 | struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io; |
792 | |
793 | if (pnp_resource_enabled(res: p)) { |
794 | fixed_io->address = p->start; |
795 | fixed_io->address_length = resource_size(res: p); |
796 | } else { |
797 | fixed_io->address = 0; |
798 | fixed_io->address_length = 0; |
799 | } |
800 | |
801 | pnp_dbg(&dev->dev, " encode fixed_io %#x-%#x\n" , fixed_io->address, |
802 | fixed_io->address + fixed_io->address_length - 1); |
803 | } |
804 | |
805 | static void pnpacpi_encode_mem24(struct pnp_dev *dev, |
806 | struct acpi_resource *resource, |
807 | struct resource *p) |
808 | { |
809 | struct acpi_resource_memory24 *memory24 = &resource->data.memory24; |
810 | |
811 | if (pnp_resource_enabled(res: p)) { |
812 | /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */ |
813 | memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ? |
814 | ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; |
815 | memory24->minimum = p->start; |
816 | memory24->maximum = p->end; |
817 | memory24->alignment = 0; |
818 | memory24->address_length = resource_size(res: p); |
819 | } else { |
820 | memory24->minimum = 0; |
821 | memory24->address_length = 0; |
822 | } |
823 | |
824 | pnp_dbg(&dev->dev, " encode mem24 %#x-%#x write_protect %#x\n" , |
825 | memory24->minimum, |
826 | memory24->minimum + memory24->address_length - 1, |
827 | memory24->write_protect); |
828 | } |
829 | |
830 | static void pnpacpi_encode_mem32(struct pnp_dev *dev, |
831 | struct acpi_resource *resource, |
832 | struct resource *p) |
833 | { |
834 | struct acpi_resource_memory32 *memory32 = &resource->data.memory32; |
835 | |
836 | if (pnp_resource_enabled(res: p)) { |
837 | memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ? |
838 | ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; |
839 | memory32->minimum = p->start; |
840 | memory32->maximum = p->end; |
841 | memory32->alignment = 0; |
842 | memory32->address_length = resource_size(res: p); |
843 | } else { |
844 | memory32->minimum = 0; |
845 | memory32->alignment = 0; |
846 | } |
847 | |
848 | pnp_dbg(&dev->dev, " encode mem32 %#x-%#x write_protect %#x\n" , |
849 | memory32->minimum, |
850 | memory32->minimum + memory32->address_length - 1, |
851 | memory32->write_protect); |
852 | } |
853 | |
854 | static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev, |
855 | struct acpi_resource *resource, |
856 | struct resource *p) |
857 | { |
858 | struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32; |
859 | |
860 | if (pnp_resource_enabled(res: p)) { |
861 | fixed_memory32->write_protect = |
862 | p->flags & IORESOURCE_MEM_WRITEABLE ? |
863 | ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; |
864 | fixed_memory32->address = p->start; |
865 | fixed_memory32->address_length = resource_size(res: p); |
866 | } else { |
867 | fixed_memory32->address = 0; |
868 | fixed_memory32->address_length = 0; |
869 | } |
870 | |
871 | pnp_dbg(&dev->dev, " encode fixed_mem32 %#x-%#x write_protect %#x\n" , |
872 | fixed_memory32->address, |
873 | fixed_memory32->address + fixed_memory32->address_length - 1, |
874 | fixed_memory32->write_protect); |
875 | } |
876 | |
877 | int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer) |
878 | { |
879 | int i = 0; |
880 | /* pnpacpi_build_resource_template allocates extra mem */ |
881 | int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1; |
882 | struct acpi_resource *resource = buffer->pointer; |
883 | unsigned int port = 0, irq = 0, dma = 0, mem = 0; |
884 | |
885 | pnp_dbg(&dev->dev, "encode %d resources\n" , res_cnt); |
886 | while (i < res_cnt) { |
887 | switch (resource->type) { |
888 | case ACPI_RESOURCE_TYPE_IRQ: |
889 | pnpacpi_encode_irq(dev, resource, |
890 | p: pnp_get_resource(dev, IORESOURCE_IRQ, num: irq)); |
891 | irq++; |
892 | break; |
893 | |
894 | case ACPI_RESOURCE_TYPE_DMA: |
895 | pnpacpi_encode_dma(dev, resource, |
896 | p: pnp_get_resource(dev, IORESOURCE_DMA, num: dma)); |
897 | dma++; |
898 | break; |
899 | case ACPI_RESOURCE_TYPE_IO: |
900 | pnpacpi_encode_io(dev, resource, |
901 | p: pnp_get_resource(dev, IORESOURCE_IO, num: port)); |
902 | port++; |
903 | break; |
904 | case ACPI_RESOURCE_TYPE_FIXED_IO: |
905 | pnpacpi_encode_fixed_io(dev, resource, |
906 | p: pnp_get_resource(dev, IORESOURCE_IO, num: port)); |
907 | port++; |
908 | break; |
909 | case ACPI_RESOURCE_TYPE_MEMORY24: |
910 | pnpacpi_encode_mem24(dev, resource, |
911 | p: pnp_get_resource(dev, IORESOURCE_MEM, num: mem)); |
912 | mem++; |
913 | break; |
914 | case ACPI_RESOURCE_TYPE_MEMORY32: |
915 | pnpacpi_encode_mem32(dev, resource, |
916 | p: pnp_get_resource(dev, IORESOURCE_MEM, num: mem)); |
917 | mem++; |
918 | break; |
919 | case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: |
920 | pnpacpi_encode_fixed_mem32(dev, resource, |
921 | p: pnp_get_resource(dev, IORESOURCE_MEM, num: mem)); |
922 | mem++; |
923 | break; |
924 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: |
925 | pnpacpi_encode_ext_irq(dev, resource, |
926 | p: pnp_get_resource(dev, IORESOURCE_IRQ, num: irq)); |
927 | irq++; |
928 | break; |
929 | case ACPI_RESOURCE_TYPE_START_DEPENDENT: |
930 | case ACPI_RESOURCE_TYPE_END_DEPENDENT: |
931 | case ACPI_RESOURCE_TYPE_VENDOR: |
932 | case ACPI_RESOURCE_TYPE_END_TAG: |
933 | case ACPI_RESOURCE_TYPE_ADDRESS16: |
934 | case ACPI_RESOURCE_TYPE_ADDRESS32: |
935 | case ACPI_RESOURCE_TYPE_ADDRESS64: |
936 | case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: |
937 | case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: |
938 | default: /* other type */ |
939 | dev_warn(&dev->dev, |
940 | "can't encode unknown resource type %d\n" , |
941 | resource->type); |
942 | return -EINVAL; |
943 | } |
944 | resource++; |
945 | i++; |
946 | } |
947 | return 0; |
948 | } |
949 | |