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1 | /* |
2 | * Copyright 2008 Advanced Micro Devices, Inc. | |
3 | * Copyright 2008 Red Hat Inc. | |
4 | * Copyright 2009 Jerome Glisse. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the "Software"), | |
8 | * to deal in the Software without restriction, including without limitation | |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
10 | * and/or sell copies of the Software, and to permit persons to whom the | |
11 | * Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
22 | * OTHER DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | * Authors: Dave Airlie | |
25 | * Alex Deucher | |
26 | * Jerome Glisse | |
27 | */ | |
28 | #include <linux/console.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/debugfs.h> | |
31 | #include <drm/drmP.h> | |
32 | #include <drm/drm_crtc_helper.h> | |
33 | #include <drm/amdgpu_drm.h> | |
34 | #include <linux/vgaarb.h> | |
35 | #include <linux/vga_switcheroo.h> | |
36 | #include <linux/efi.h> | |
37 | #include "amdgpu.h" | |
38 | #include "amdgpu_i2c.h" | |
39 | #include "atom.h" | |
40 | #include "amdgpu_atombios.h" | |
41 | #include "bif/bif_4_1_d.h" | |
42 | ||
43 | static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev); | |
44 | static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev); | |
45 | ||
46 | static const char *amdgpu_asic_name[] = { | |
47 | "BONAIRE", | |
48 | "KAVERI", | |
49 | "KABINI", | |
50 | "HAWAII", | |
51 | "MULLINS", | |
52 | "TOPAZ", | |
53 | "TONGA", | |
54 | "CARRIZO", | |
55 | "LAST", | |
56 | }; | |
57 | ||
58 | bool amdgpu_device_is_px(struct drm_device *dev) | |
59 | { | |
60 | struct amdgpu_device *adev = dev->dev_private; | |
61 | ||
62 | if (adev->flags & AMDGPU_IS_PX) | |
63 | return true; | |
64 | return false; | |
65 | } | |
66 | ||
67 | /* | |
68 | * MMIO register access helper functions. | |
69 | */ | |
70 | uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, | |
71 | bool always_indirect) | |
72 | { | |
73 | if ((reg * 4) < adev->rmmio_size && !always_indirect) | |
74 | return readl(((void __iomem *)adev->rmmio) + (reg * 4)); | |
75 | else { | |
76 | unsigned long flags; | |
77 | uint32_t ret; | |
78 | ||
79 | spin_lock_irqsave(&adev->mmio_idx_lock, flags); | |
80 | writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4)); | |
81 | ret = readl(((void __iomem *)adev->rmmio) + (mmMM_DATA * 4)); | |
82 | spin_unlock_irqrestore(&adev->mmio_idx_lock, flags); | |
83 | ||
84 | return ret; | |
85 | } | |
86 | } | |
87 | ||
88 | void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, | |
89 | bool always_indirect) | |
90 | { | |
91 | if ((reg * 4) < adev->rmmio_size && !always_indirect) | |
92 | writel(v, ((void __iomem *)adev->rmmio) + (reg * 4)); | |
93 | else { | |
94 | unsigned long flags; | |
95 | ||
96 | spin_lock_irqsave(&adev->mmio_idx_lock, flags); | |
97 | writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4)); | |
98 | writel(v, ((void __iomem *)adev->rmmio) + (mmMM_DATA * 4)); | |
99 | spin_unlock_irqrestore(&adev->mmio_idx_lock, flags); | |
100 | } | |
101 | } | |
102 | ||
103 | u32 amdgpu_io_rreg(struct amdgpu_device *adev, u32 reg) | |
104 | { | |
105 | if ((reg * 4) < adev->rio_mem_size) | |
106 | return ioread32(adev->rio_mem + (reg * 4)); | |
107 | else { | |
108 | iowrite32((reg * 4), adev->rio_mem + (mmMM_INDEX * 4)); | |
109 | return ioread32(adev->rio_mem + (mmMM_DATA * 4)); | |
110 | } | |
111 | } | |
112 | ||
113 | void amdgpu_io_wreg(struct amdgpu_device *adev, u32 reg, u32 v) | |
114 | { | |
115 | ||
116 | if ((reg * 4) < adev->rio_mem_size) | |
117 | iowrite32(v, adev->rio_mem + (reg * 4)); | |
118 | else { | |
119 | iowrite32((reg * 4), adev->rio_mem + (mmMM_INDEX * 4)); | |
120 | iowrite32(v, adev->rio_mem + (mmMM_DATA * 4)); | |
121 | } | |
122 | } | |
123 | ||
124 | /** | |
125 | * amdgpu_mm_rdoorbell - read a doorbell dword | |
126 | * | |
127 | * @adev: amdgpu_device pointer | |
128 | * @index: doorbell index | |
129 | * | |
130 | * Returns the value in the doorbell aperture at the | |
131 | * requested doorbell index (CIK). | |
132 | */ | |
133 | u32 amdgpu_mm_rdoorbell(struct amdgpu_device *adev, u32 index) | |
134 | { | |
135 | if (index < adev->doorbell.num_doorbells) { | |
136 | return readl(adev->doorbell.ptr + index); | |
137 | } else { | |
138 | DRM_ERROR("reading beyond doorbell aperture: 0x%08x!\n", index); | |
139 | return 0; | |
140 | } | |
141 | } | |
142 | ||
143 | /** | |
144 | * amdgpu_mm_wdoorbell - write a doorbell dword | |
145 | * | |
146 | * @adev: amdgpu_device pointer | |
147 | * @index: doorbell index | |
148 | * @v: value to write | |
149 | * | |
150 | * Writes @v to the doorbell aperture at the | |
151 | * requested doorbell index (CIK). | |
152 | */ | |
153 | void amdgpu_mm_wdoorbell(struct amdgpu_device *adev, u32 index, u32 v) | |
154 | { | |
155 | if (index < adev->doorbell.num_doorbells) { | |
156 | writel(v, adev->doorbell.ptr + index); | |
157 | } else { | |
158 | DRM_ERROR("writing beyond doorbell aperture: 0x%08x!\n", index); | |
159 | } | |
160 | } | |
161 | ||
162 | /** | |
163 | * amdgpu_invalid_rreg - dummy reg read function | |
164 | * | |
165 | * @adev: amdgpu device pointer | |
166 | * @reg: offset of register | |
167 | * | |
168 | * Dummy register read function. Used for register blocks | |
169 | * that certain asics don't have (all asics). | |
170 | * Returns the value in the register. | |
171 | */ | |
172 | static uint32_t amdgpu_invalid_rreg(struct amdgpu_device *adev, uint32_t reg) | |
173 | { | |
174 | DRM_ERROR("Invalid callback to read register 0x%04X\n", reg); | |
175 | BUG(); | |
176 | return 0; | |
177 | } | |
178 | ||
179 | /** | |
180 | * amdgpu_invalid_wreg - dummy reg write function | |
181 | * | |
182 | * @adev: amdgpu device pointer | |
183 | * @reg: offset of register | |
184 | * @v: value to write to the register | |
185 | * | |
186 | * Dummy register read function. Used for register blocks | |
187 | * that certain asics don't have (all asics). | |
188 | */ | |
189 | static void amdgpu_invalid_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v) | |
190 | { | |
191 | DRM_ERROR("Invalid callback to write register 0x%04X with 0x%08X\n", | |
192 | reg, v); | |
193 | BUG(); | |
194 | } | |
195 | ||
196 | /** | |
197 | * amdgpu_block_invalid_rreg - dummy reg read function | |
198 | * | |
199 | * @adev: amdgpu device pointer | |
200 | * @block: offset of instance | |
201 | * @reg: offset of register | |
202 | * | |
203 | * Dummy register read function. Used for register blocks | |
204 | * that certain asics don't have (all asics). | |
205 | * Returns the value in the register. | |
206 | */ | |
207 | static uint32_t amdgpu_block_invalid_rreg(struct amdgpu_device *adev, | |
208 | uint32_t block, uint32_t reg) | |
209 | { | |
210 | DRM_ERROR("Invalid callback to read register 0x%04X in block 0x%04X\n", | |
211 | reg, block); | |
212 | BUG(); | |
213 | return 0; | |
214 | } | |
215 | ||
216 | /** | |
217 | * amdgpu_block_invalid_wreg - dummy reg write function | |
218 | * | |
219 | * @adev: amdgpu device pointer | |
220 | * @block: offset of instance | |
221 | * @reg: offset of register | |
222 | * @v: value to write to the register | |
223 | * | |
224 | * Dummy register read function. Used for register blocks | |
225 | * that certain asics don't have (all asics). | |
226 | */ | |
227 | static void amdgpu_block_invalid_wreg(struct amdgpu_device *adev, | |
228 | uint32_t block, | |
229 | uint32_t reg, uint32_t v) | |
230 | { | |
231 | DRM_ERROR("Invalid block callback to write register 0x%04X in block 0x%04X with 0x%08X\n", | |
232 | reg, block, v); | |
233 | BUG(); | |
234 | } | |
235 | ||
236 | static int amdgpu_vram_scratch_init(struct amdgpu_device *adev) | |
237 | { | |
238 | int r; | |
239 | ||
240 | if (adev->vram_scratch.robj == NULL) { | |
241 | r = amdgpu_bo_create(adev, AMDGPU_GPU_PAGE_SIZE, | |
242 | PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_VRAM, 0, | |
243 | NULL, &adev->vram_scratch.robj); | |
244 | if (r) { | |
245 | return r; | |
246 | } | |
247 | } | |
248 | ||
249 | r = amdgpu_bo_reserve(adev->vram_scratch.robj, false); | |
250 | if (unlikely(r != 0)) | |
251 | return r; | |
252 | r = amdgpu_bo_pin(adev->vram_scratch.robj, | |
253 | AMDGPU_GEM_DOMAIN_VRAM, &adev->vram_scratch.gpu_addr); | |
254 | if (r) { | |
255 | amdgpu_bo_unreserve(adev->vram_scratch.robj); | |
256 | return r; | |
257 | } | |
258 | r = amdgpu_bo_kmap(adev->vram_scratch.robj, | |
259 | (void **)&adev->vram_scratch.ptr); | |
260 | if (r) | |
261 | amdgpu_bo_unpin(adev->vram_scratch.robj); | |
262 | amdgpu_bo_unreserve(adev->vram_scratch.robj); | |
263 | ||
264 | return r; | |
265 | } | |
266 | ||
267 | static void amdgpu_vram_scratch_fini(struct amdgpu_device *adev) | |
268 | { | |
269 | int r; | |
270 | ||
271 | if (adev->vram_scratch.robj == NULL) { | |
272 | return; | |
273 | } | |
274 | r = amdgpu_bo_reserve(adev->vram_scratch.robj, false); | |
275 | if (likely(r == 0)) { | |
276 | amdgpu_bo_kunmap(adev->vram_scratch.robj); | |
277 | amdgpu_bo_unpin(adev->vram_scratch.robj); | |
278 | amdgpu_bo_unreserve(adev->vram_scratch.robj); | |
279 | } | |
280 | amdgpu_bo_unref(&adev->vram_scratch.robj); | |
281 | } | |
282 | ||
283 | /** | |
284 | * amdgpu_program_register_sequence - program an array of registers. | |
285 | * | |
286 | * @adev: amdgpu_device pointer | |
287 | * @registers: pointer to the register array | |
288 | * @array_size: size of the register array | |
289 | * | |
290 | * Programs an array or registers with and and or masks. | |
291 | * This is a helper for setting golden registers. | |
292 | */ | |
293 | void amdgpu_program_register_sequence(struct amdgpu_device *adev, | |
294 | const u32 *registers, | |
295 | const u32 array_size) | |
296 | { | |
297 | u32 tmp, reg, and_mask, or_mask; | |
298 | int i; | |
299 | ||
300 | if (array_size % 3) | |
301 | return; | |
302 | ||
303 | for (i = 0; i < array_size; i +=3) { | |
304 | reg = registers[i + 0]; | |
305 | and_mask = registers[i + 1]; | |
306 | or_mask = registers[i + 2]; | |
307 | ||
308 | if (and_mask == 0xffffffff) { | |
309 | tmp = or_mask; | |
310 | } else { | |
311 | tmp = RREG32(reg); | |
312 | tmp &= ~and_mask; | |
313 | tmp |= or_mask; | |
314 | } | |
315 | WREG32(reg, tmp); | |
316 | } | |
317 | } | |
318 | ||
319 | void amdgpu_pci_config_reset(struct amdgpu_device *adev) | |
320 | { | |
321 | pci_write_config_dword(adev->pdev, 0x7c, AMDGPU_ASIC_RESET_DATA); | |
322 | } | |
323 | ||
324 | /* | |
325 | * GPU doorbell aperture helpers function. | |
326 | */ | |
327 | /** | |
328 | * amdgpu_doorbell_init - Init doorbell driver information. | |
329 | * | |
330 | * @adev: amdgpu_device pointer | |
331 | * | |
332 | * Init doorbell driver information (CIK) | |
333 | * Returns 0 on success, error on failure. | |
334 | */ | |
335 | static int amdgpu_doorbell_init(struct amdgpu_device *adev) | |
336 | { | |
337 | /* doorbell bar mapping */ | |
338 | adev->doorbell.base = pci_resource_start(adev->pdev, 2); | |
339 | adev->doorbell.size = pci_resource_len(adev->pdev, 2); | |
340 | ||
341 | adev->doorbell.num_doorbells = min_t(u32, adev->doorbell.size / sizeof(u32), | |
342 | AMDGPU_DOORBELL_MAX_ASSIGNMENT+1); | |
343 | if (adev->doorbell.num_doorbells == 0) | |
344 | return -EINVAL; | |
345 | ||
346 | adev->doorbell.ptr = ioremap(adev->doorbell.base, adev->doorbell.num_doorbells * sizeof(u32)); | |
347 | if (adev->doorbell.ptr == NULL) { | |
348 | return -ENOMEM; | |
349 | } | |
350 | DRM_INFO("doorbell mmio base: 0x%08X\n", (uint32_t)adev->doorbell.base); | |
351 | DRM_INFO("doorbell mmio size: %u\n", (unsigned)adev->doorbell.size); | |
352 | ||
353 | return 0; | |
354 | } | |
355 | ||
356 | /** | |
357 | * amdgpu_doorbell_fini - Tear down doorbell driver information. | |
358 | * | |
359 | * @adev: amdgpu_device pointer | |
360 | * | |
361 | * Tear down doorbell driver information (CIK) | |
362 | */ | |
363 | static void amdgpu_doorbell_fini(struct amdgpu_device *adev) | |
364 | { | |
365 | iounmap(adev->doorbell.ptr); | |
366 | adev->doorbell.ptr = NULL; | |
367 | } | |
368 | ||
369 | /** | |
370 | * amdgpu_doorbell_get_kfd_info - Report doorbell configuration required to | |
371 | * setup amdkfd | |
372 | * | |
373 | * @adev: amdgpu_device pointer | |
374 | * @aperture_base: output returning doorbell aperture base physical address | |
375 | * @aperture_size: output returning doorbell aperture size in bytes | |
376 | * @start_offset: output returning # of doorbell bytes reserved for amdgpu. | |
377 | * | |
378 | * amdgpu and amdkfd share the doorbell aperture. amdgpu sets it up, | |
379 | * takes doorbells required for its own rings and reports the setup to amdkfd. | |
380 | * amdgpu reserved doorbells are at the start of the doorbell aperture. | |
381 | */ | |
382 | void amdgpu_doorbell_get_kfd_info(struct amdgpu_device *adev, | |
383 | phys_addr_t *aperture_base, | |
384 | size_t *aperture_size, | |
385 | size_t *start_offset) | |
386 | { | |
387 | /* | |
388 | * The first num_doorbells are used by amdgpu. | |
389 | * amdkfd takes whatever's left in the aperture. | |
390 | */ | |
391 | if (adev->doorbell.size > adev->doorbell.num_doorbells * sizeof(u32)) { | |
392 | *aperture_base = adev->doorbell.base; | |
393 | *aperture_size = adev->doorbell.size; | |
394 | *start_offset = adev->doorbell.num_doorbells * sizeof(u32); | |
395 | } else { | |
396 | *aperture_base = 0; | |
397 | *aperture_size = 0; | |
398 | *start_offset = 0; | |
399 | } | |
400 | } | |
401 | ||
402 | /* | |
403 | * amdgpu_wb_*() | |
404 | * Writeback is the the method by which the the GPU updates special pages | |
405 | * in memory with the status of certain GPU events (fences, ring pointers, | |
406 | * etc.). | |
407 | */ | |
408 | ||
409 | /** | |
410 | * amdgpu_wb_fini - Disable Writeback and free memory | |
411 | * | |
412 | * @adev: amdgpu_device pointer | |
413 | * | |
414 | * Disables Writeback and frees the Writeback memory (all asics). | |
415 | * Used at driver shutdown. | |
416 | */ | |
417 | static void amdgpu_wb_fini(struct amdgpu_device *adev) | |
418 | { | |
419 | if (adev->wb.wb_obj) { | |
420 | if (!amdgpu_bo_reserve(adev->wb.wb_obj, false)) { | |
421 | amdgpu_bo_kunmap(adev->wb.wb_obj); | |
422 | amdgpu_bo_unpin(adev->wb.wb_obj); | |
423 | amdgpu_bo_unreserve(adev->wb.wb_obj); | |
424 | } | |
425 | amdgpu_bo_unref(&adev->wb.wb_obj); | |
426 | adev->wb.wb = NULL; | |
427 | adev->wb.wb_obj = NULL; | |
428 | } | |
429 | } | |
430 | ||
431 | /** | |
432 | * amdgpu_wb_init- Init Writeback driver info and allocate memory | |
433 | * | |
434 | * @adev: amdgpu_device pointer | |
435 | * | |
436 | * Disables Writeback and frees the Writeback memory (all asics). | |
437 | * Used at driver startup. | |
438 | * Returns 0 on success or an -error on failure. | |
439 | */ | |
440 | static int amdgpu_wb_init(struct amdgpu_device *adev) | |
441 | { | |
442 | int r; | |
443 | ||
444 | if (adev->wb.wb_obj == NULL) { | |
445 | r = amdgpu_bo_create(adev, AMDGPU_MAX_WB * 4, PAGE_SIZE, true, | |
446 | AMDGPU_GEM_DOMAIN_GTT, 0, NULL, &adev->wb.wb_obj); | |
447 | if (r) { | |
448 | dev_warn(adev->dev, "(%d) create WB bo failed\n", r); | |
449 | return r; | |
450 | } | |
451 | r = amdgpu_bo_reserve(adev->wb.wb_obj, false); | |
452 | if (unlikely(r != 0)) { | |
453 | amdgpu_wb_fini(adev); | |
454 | return r; | |
455 | } | |
456 | r = amdgpu_bo_pin(adev->wb.wb_obj, AMDGPU_GEM_DOMAIN_GTT, | |
457 | &adev->wb.gpu_addr); | |
458 | if (r) { | |
459 | amdgpu_bo_unreserve(adev->wb.wb_obj); | |
460 | dev_warn(adev->dev, "(%d) pin WB bo failed\n", r); | |
461 | amdgpu_wb_fini(adev); | |
462 | return r; | |
463 | } | |
464 | r = amdgpu_bo_kmap(adev->wb.wb_obj, (void **)&adev->wb.wb); | |
465 | amdgpu_bo_unreserve(adev->wb.wb_obj); | |
466 | if (r) { | |
467 | dev_warn(adev->dev, "(%d) map WB bo failed\n", r); | |
468 | amdgpu_wb_fini(adev); | |
469 | return r; | |
470 | } | |
471 | ||
472 | adev->wb.num_wb = AMDGPU_MAX_WB; | |
473 | memset(&adev->wb.used, 0, sizeof(adev->wb.used)); | |
474 | ||
475 | /* clear wb memory */ | |
476 | memset((char *)adev->wb.wb, 0, AMDGPU_GPU_PAGE_SIZE); | |
477 | } | |
478 | ||
479 | return 0; | |
480 | } | |
481 | ||
482 | /** | |
483 | * amdgpu_wb_get - Allocate a wb entry | |
484 | * | |
485 | * @adev: amdgpu_device pointer | |
486 | * @wb: wb index | |
487 | * | |
488 | * Allocate a wb slot for use by the driver (all asics). | |
489 | * Returns 0 on success or -EINVAL on failure. | |
490 | */ | |
491 | int amdgpu_wb_get(struct amdgpu_device *adev, u32 *wb) | |
492 | { | |
493 | unsigned long offset = find_first_zero_bit(adev->wb.used, adev->wb.num_wb); | |
494 | if (offset < adev->wb.num_wb) { | |
495 | __set_bit(offset, adev->wb.used); | |
496 | *wb = offset; | |
497 | return 0; | |
498 | } else { | |
499 | return -EINVAL; | |
500 | } | |
501 | } | |
502 | ||
503 | /** | |
504 | * amdgpu_wb_free - Free a wb entry | |
505 | * | |
506 | * @adev: amdgpu_device pointer | |
507 | * @wb: wb index | |
508 | * | |
509 | * Free a wb slot allocated for use by the driver (all asics) | |
510 | */ | |
511 | void amdgpu_wb_free(struct amdgpu_device *adev, u32 wb) | |
512 | { | |
513 | if (wb < adev->wb.num_wb) | |
514 | __clear_bit(wb, adev->wb.used); | |
515 | } | |
516 | ||
517 | /** | |
518 | * amdgpu_vram_location - try to find VRAM location | |
519 | * @adev: amdgpu device structure holding all necessary informations | |
520 | * @mc: memory controller structure holding memory informations | |
521 | * @base: base address at which to put VRAM | |
522 | * | |
523 | * Function will place try to place VRAM at base address provided | |
524 | * as parameter (which is so far either PCI aperture address or | |
525 | * for IGP TOM base address). | |
526 | * | |
527 | * If there is not enough space to fit the unvisible VRAM in the 32bits | |
528 | * address space then we limit the VRAM size to the aperture. | |
529 | * | |
530 | * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size, | |
531 | * this shouldn't be a problem as we are using the PCI aperture as a reference. | |
532 | * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but | |
533 | * not IGP. | |
534 | * | |
535 | * Note: we use mc_vram_size as on some board we need to program the mc to | |
536 | * cover the whole aperture even if VRAM size is inferior to aperture size | |
537 | * Novell bug 204882 + along with lots of ubuntu ones | |
538 | * | |
539 | * Note: when limiting vram it's safe to overwritte real_vram_size because | |
540 | * we are not in case where real_vram_size is inferior to mc_vram_size (ie | |
541 | * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu | |
542 | * ones) | |
543 | * | |
544 | * Note: IGP TOM addr should be the same as the aperture addr, we don't | |
545 | * explicitly check for that thought. | |
546 | * | |
547 | * FIXME: when reducing VRAM size align new size on power of 2. | |
548 | */ | |
549 | void amdgpu_vram_location(struct amdgpu_device *adev, struct amdgpu_mc *mc, u64 base) | |
550 | { | |
551 | uint64_t limit = (uint64_t)amdgpu_vram_limit << 20; | |
552 | ||
553 | mc->vram_start = base; | |
554 | if (mc->mc_vram_size > (adev->mc.mc_mask - base + 1)) { | |
555 | dev_warn(adev->dev, "limiting VRAM to PCI aperture size\n"); | |
556 | mc->real_vram_size = mc->aper_size; | |
557 | mc->mc_vram_size = mc->aper_size; | |
558 | } | |
559 | mc->vram_end = mc->vram_start + mc->mc_vram_size - 1; | |
560 | if (limit && limit < mc->real_vram_size) | |
561 | mc->real_vram_size = limit; | |
562 | dev_info(adev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n", | |
563 | mc->mc_vram_size >> 20, mc->vram_start, | |
564 | mc->vram_end, mc->real_vram_size >> 20); | |
565 | } | |
566 | ||
567 | /** | |
568 | * amdgpu_gtt_location - try to find GTT location | |
569 | * @adev: amdgpu device structure holding all necessary informations | |
570 | * @mc: memory controller structure holding memory informations | |
571 | * | |
572 | * Function will place try to place GTT before or after VRAM. | |
573 | * | |
574 | * If GTT size is bigger than space left then we ajust GTT size. | |
575 | * Thus function will never fails. | |
576 | * | |
577 | * FIXME: when reducing GTT size align new size on power of 2. | |
578 | */ | |
579 | void amdgpu_gtt_location(struct amdgpu_device *adev, struct amdgpu_mc *mc) | |
580 | { | |
581 | u64 size_af, size_bf; | |
582 | ||
583 | size_af = ((adev->mc.mc_mask - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align; | |
584 | size_bf = mc->vram_start & ~mc->gtt_base_align; | |
585 | if (size_bf > size_af) { | |
586 | if (mc->gtt_size > size_bf) { | |
587 | dev_warn(adev->dev, "limiting GTT\n"); | |
588 | mc->gtt_size = size_bf; | |
589 | } | |
590 | mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size; | |
591 | } else { | |
592 | if (mc->gtt_size > size_af) { | |
593 | dev_warn(adev->dev, "limiting GTT\n"); | |
594 | mc->gtt_size = size_af; | |
595 | } | |
596 | mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align; | |
597 | } | |
598 | mc->gtt_end = mc->gtt_start + mc->gtt_size - 1; | |
599 | dev_info(adev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n", | |
600 | mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end); | |
601 | } | |
602 | ||
603 | /* | |
604 | * GPU helpers function. | |
605 | */ | |
606 | /** | |
607 | * amdgpu_card_posted - check if the hw has already been initialized | |
608 | * | |
609 | * @adev: amdgpu_device pointer | |
610 | * | |
611 | * Check if the asic has been initialized (all asics). | |
612 | * Used at driver startup. | |
613 | * Returns true if initialized or false if not. | |
614 | */ | |
615 | bool amdgpu_card_posted(struct amdgpu_device *adev) | |
616 | { | |
617 | uint32_t reg; | |
618 | ||
619 | /* then check MEM_SIZE, in case the crtcs are off */ | |
620 | reg = RREG32(mmCONFIG_MEMSIZE); | |
621 | ||
622 | if (reg) | |
623 | return true; | |
624 | ||
625 | return false; | |
626 | ||
627 | } | |
628 | ||
629 | /** | |
630 | * amdgpu_boot_test_post_card - check and possibly initialize the hw | |
631 | * | |
632 | * @adev: amdgpu_device pointer | |
633 | * | |
634 | * Check if the asic is initialized and if not, attempt to initialize | |
635 | * it (all asics). | |
636 | * Returns true if initialized or false if not. | |
637 | */ | |
638 | bool amdgpu_boot_test_post_card(struct amdgpu_device *adev) | |
639 | { | |
640 | if (amdgpu_card_posted(adev)) | |
641 | return true; | |
642 | ||
643 | if (adev->bios) { | |
644 | DRM_INFO("GPU not posted. posting now...\n"); | |
645 | if (adev->is_atom_bios) | |
646 | amdgpu_atom_asic_init(adev->mode_info.atom_context); | |
647 | return true; | |
648 | } else { | |
649 | dev_err(adev->dev, "Card not posted and no BIOS - ignoring\n"); | |
650 | return false; | |
651 | } | |
652 | } | |
653 | ||
654 | /** | |
655 | * amdgpu_dummy_page_init - init dummy page used by the driver | |
656 | * | |
657 | * @adev: amdgpu_device pointer | |
658 | * | |
659 | * Allocate the dummy page used by the driver (all asics). | |
660 | * This dummy page is used by the driver as a filler for gart entries | |
661 | * when pages are taken out of the GART | |
662 | * Returns 0 on sucess, -ENOMEM on failure. | |
663 | */ | |
664 | int amdgpu_dummy_page_init(struct amdgpu_device *adev) | |
665 | { | |
666 | if (adev->dummy_page.page) | |
667 | return 0; | |
668 | adev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO); | |
669 | if (adev->dummy_page.page == NULL) | |
670 | return -ENOMEM; | |
671 | adev->dummy_page.addr = pci_map_page(adev->pdev, adev->dummy_page.page, | |
672 | 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); | |
673 | if (pci_dma_mapping_error(adev->pdev, adev->dummy_page.addr)) { | |
674 | dev_err(&adev->pdev->dev, "Failed to DMA MAP the dummy page\n"); | |
675 | __free_page(adev->dummy_page.page); | |
676 | adev->dummy_page.page = NULL; | |
677 | return -ENOMEM; | |
678 | } | |
679 | return 0; | |
680 | } | |
681 | ||
682 | /** | |
683 | * amdgpu_dummy_page_fini - free dummy page used by the driver | |
684 | * | |
685 | * @adev: amdgpu_device pointer | |
686 | * | |
687 | * Frees the dummy page used by the driver (all asics). | |
688 | */ | |
689 | void amdgpu_dummy_page_fini(struct amdgpu_device *adev) | |
690 | { | |
691 | if (adev->dummy_page.page == NULL) | |
692 | return; | |
693 | pci_unmap_page(adev->pdev, adev->dummy_page.addr, | |
694 | PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); | |
695 | __free_page(adev->dummy_page.page); | |
696 | adev->dummy_page.page = NULL; | |
697 | } | |
698 | ||
699 | ||
700 | /* ATOM accessor methods */ | |
701 | /* | |
702 | * ATOM is an interpreted byte code stored in tables in the vbios. The | |
703 | * driver registers callbacks to access registers and the interpreter | |
704 | * in the driver parses the tables and executes then to program specific | |
705 | * actions (set display modes, asic init, etc.). See amdgpu_atombios.c, | |
706 | * atombios.h, and atom.c | |
707 | */ | |
708 | ||
709 | /** | |
710 | * cail_pll_read - read PLL register | |
711 | * | |
712 | * @info: atom card_info pointer | |
713 | * @reg: PLL register offset | |
714 | * | |
715 | * Provides a PLL register accessor for the atom interpreter (r4xx+). | |
716 | * Returns the value of the PLL register. | |
717 | */ | |
718 | static uint32_t cail_pll_read(struct card_info *info, uint32_t reg) | |
719 | { | |
720 | return 0; | |
721 | } | |
722 | ||
723 | /** | |
724 | * cail_pll_write - write PLL register | |
725 | * | |
726 | * @info: atom card_info pointer | |
727 | * @reg: PLL register offset | |
728 | * @val: value to write to the pll register | |
729 | * | |
730 | * Provides a PLL register accessor for the atom interpreter (r4xx+). | |
731 | */ | |
732 | static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val) | |
733 | { | |
734 | ||
735 | } | |
736 | ||
737 | /** | |
738 | * cail_mc_read - read MC (Memory Controller) register | |
739 | * | |
740 | * @info: atom card_info pointer | |
741 | * @reg: MC register offset | |
742 | * | |
743 | * Provides an MC register accessor for the atom interpreter (r4xx+). | |
744 | * Returns the value of the MC register. | |
745 | */ | |
746 | static uint32_t cail_mc_read(struct card_info *info, uint32_t reg) | |
747 | { | |
748 | return 0; | |
749 | } | |
750 | ||
751 | /** | |
752 | * cail_mc_write - write MC (Memory Controller) register | |
753 | * | |
754 | * @info: atom card_info pointer | |
755 | * @reg: MC register offset | |
756 | * @val: value to write to the pll register | |
757 | * | |
758 | * Provides a MC register accessor for the atom interpreter (r4xx+). | |
759 | */ | |
760 | static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val) | |
761 | { | |
762 | ||
763 | } | |
764 | ||
765 | /** | |
766 | * cail_reg_write - write MMIO register | |
767 | * | |
768 | * @info: atom card_info pointer | |
769 | * @reg: MMIO register offset | |
770 | * @val: value to write to the pll register | |
771 | * | |
772 | * Provides a MMIO register accessor for the atom interpreter (r4xx+). | |
773 | */ | |
774 | static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val) | |
775 | { | |
776 | struct amdgpu_device *adev = info->dev->dev_private; | |
777 | ||
778 | WREG32(reg, val); | |
779 | } | |
780 | ||
781 | /** | |
782 | * cail_reg_read - read MMIO register | |
783 | * | |
784 | * @info: atom card_info pointer | |
785 | * @reg: MMIO register offset | |
786 | * | |
787 | * Provides an MMIO register accessor for the atom interpreter (r4xx+). | |
788 | * Returns the value of the MMIO register. | |
789 | */ | |
790 | static uint32_t cail_reg_read(struct card_info *info, uint32_t reg) | |
791 | { | |
792 | struct amdgpu_device *adev = info->dev->dev_private; | |
793 | uint32_t r; | |
794 | ||
795 | r = RREG32(reg); | |
796 | return r; | |
797 | } | |
798 | ||
799 | /** | |
800 | * cail_ioreg_write - write IO register | |
801 | * | |
802 | * @info: atom card_info pointer | |
803 | * @reg: IO register offset | |
804 | * @val: value to write to the pll register | |
805 | * | |
806 | * Provides a IO register accessor for the atom interpreter (r4xx+). | |
807 | */ | |
808 | static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val) | |
809 | { | |
810 | struct amdgpu_device *adev = info->dev->dev_private; | |
811 | ||
812 | WREG32_IO(reg, val); | |
813 | } | |
814 | ||
815 | /** | |
816 | * cail_ioreg_read - read IO register | |
817 | * | |
818 | * @info: atom card_info pointer | |
819 | * @reg: IO register offset | |
820 | * | |
821 | * Provides an IO register accessor for the atom interpreter (r4xx+). | |
822 | * Returns the value of the IO register. | |
823 | */ | |
824 | static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg) | |
825 | { | |
826 | struct amdgpu_device *adev = info->dev->dev_private; | |
827 | uint32_t r; | |
828 | ||
829 | r = RREG32_IO(reg); | |
830 | return r; | |
831 | } | |
832 | ||
833 | /** | |
834 | * amdgpu_atombios_fini - free the driver info and callbacks for atombios | |
835 | * | |
836 | * @adev: amdgpu_device pointer | |
837 | * | |
838 | * Frees the driver info and register access callbacks for the ATOM | |
839 | * interpreter (r4xx+). | |
840 | * Called at driver shutdown. | |
841 | */ | |
842 | static void amdgpu_atombios_fini(struct amdgpu_device *adev) | |
843 | { | |
844 | if (adev->mode_info.atom_context) | |
845 | kfree(adev->mode_info.atom_context->scratch); | |
846 | kfree(adev->mode_info.atom_context); | |
847 | adev->mode_info.atom_context = NULL; | |
848 | kfree(adev->mode_info.atom_card_info); | |
849 | adev->mode_info.atom_card_info = NULL; | |
850 | } | |
851 | ||
852 | /** | |
853 | * amdgpu_atombios_init - init the driver info and callbacks for atombios | |
854 | * | |
855 | * @adev: amdgpu_device pointer | |
856 | * | |
857 | * Initializes the driver info and register access callbacks for the | |
858 | * ATOM interpreter (r4xx+). | |
859 | * Returns 0 on sucess, -ENOMEM on failure. | |
860 | * Called at driver startup. | |
861 | */ | |
862 | static int amdgpu_atombios_init(struct amdgpu_device *adev) | |
863 | { | |
864 | struct card_info *atom_card_info = | |
865 | kzalloc(sizeof(struct card_info), GFP_KERNEL); | |
866 | ||
867 | if (!atom_card_info) | |
868 | return -ENOMEM; | |
869 | ||
870 | adev->mode_info.atom_card_info = atom_card_info; | |
871 | atom_card_info->dev = adev->ddev; | |
872 | atom_card_info->reg_read = cail_reg_read; | |
873 | atom_card_info->reg_write = cail_reg_write; | |
874 | /* needed for iio ops */ | |
875 | if (adev->rio_mem) { | |
876 | atom_card_info->ioreg_read = cail_ioreg_read; | |
877 | atom_card_info->ioreg_write = cail_ioreg_write; | |
878 | } else { | |
879 | DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n"); | |
880 | atom_card_info->ioreg_read = cail_reg_read; | |
881 | atom_card_info->ioreg_write = cail_reg_write; | |
882 | } | |
883 | atom_card_info->mc_read = cail_mc_read; | |
884 | atom_card_info->mc_write = cail_mc_write; | |
885 | atom_card_info->pll_read = cail_pll_read; | |
886 | atom_card_info->pll_write = cail_pll_write; | |
887 | ||
888 | adev->mode_info.atom_context = amdgpu_atom_parse(atom_card_info, adev->bios); | |
889 | if (!adev->mode_info.atom_context) { | |
890 | amdgpu_atombios_fini(adev); | |
891 | return -ENOMEM; | |
892 | } | |
893 | ||
894 | mutex_init(&adev->mode_info.atom_context->mutex); | |
895 | amdgpu_atombios_scratch_regs_init(adev); | |
896 | amdgpu_atom_allocate_fb_scratch(adev->mode_info.atom_context); | |
897 | return 0; | |
898 | } | |
899 | ||
900 | /* if we get transitioned to only one device, take VGA back */ | |
901 | /** | |
902 | * amdgpu_vga_set_decode - enable/disable vga decode | |
903 | * | |
904 | * @cookie: amdgpu_device pointer | |
905 | * @state: enable/disable vga decode | |
906 | * | |
907 | * Enable/disable vga decode (all asics). | |
908 | * Returns VGA resource flags. | |
909 | */ | |
910 | static unsigned int amdgpu_vga_set_decode(void *cookie, bool state) | |
911 | { | |
912 | struct amdgpu_device *adev = cookie; | |
913 | amdgpu_asic_set_vga_state(adev, state); | |
914 | if (state) | |
915 | return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM | | |
916 | VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; | |
917 | else | |
918 | return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; | |
919 | } | |
920 | ||
921 | /** | |
922 | * amdgpu_check_pot_argument - check that argument is a power of two | |
923 | * | |
924 | * @arg: value to check | |
925 | * | |
926 | * Validates that a certain argument is a power of two (all asics). | |
927 | * Returns true if argument is valid. | |
928 | */ | |
929 | static bool amdgpu_check_pot_argument(int arg) | |
930 | { | |
931 | return (arg & (arg - 1)) == 0; | |
932 | } | |
933 | ||
934 | /** | |
935 | * amdgpu_check_arguments - validate module params | |
936 | * | |
937 | * @adev: amdgpu_device pointer | |
938 | * | |
939 | * Validates certain module parameters and updates | |
940 | * the associated values used by the driver (all asics). | |
941 | */ | |
942 | static void amdgpu_check_arguments(struct amdgpu_device *adev) | |
943 | { | |
944 | /* vramlimit must be a power of two */ | |
945 | if (!amdgpu_check_pot_argument(amdgpu_vram_limit)) { | |
946 | dev_warn(adev->dev, "vram limit (%d) must be a power of 2\n", | |
947 | amdgpu_vram_limit); | |
948 | amdgpu_vram_limit = 0; | |
949 | } | |
950 | ||
951 | if (amdgpu_gart_size != -1) { | |
952 | /* gtt size must be power of two and greater or equal to 32M */ | |
953 | if (amdgpu_gart_size < 32) { | |
954 | dev_warn(adev->dev, "gart size (%d) too small\n", | |
955 | amdgpu_gart_size); | |
956 | amdgpu_gart_size = -1; | |
957 | } else if (!amdgpu_check_pot_argument(amdgpu_gart_size)) { | |
958 | dev_warn(adev->dev, "gart size (%d) must be a power of 2\n", | |
959 | amdgpu_gart_size); | |
960 | amdgpu_gart_size = -1; | |
961 | } | |
962 | } | |
963 | ||
964 | if (!amdgpu_check_pot_argument(amdgpu_vm_size)) { | |
965 | dev_warn(adev->dev, "VM size (%d) must be a power of 2\n", | |
966 | amdgpu_vm_size); | |
967 | amdgpu_vm_size = 4; | |
968 | } | |
969 | ||
970 | if (amdgpu_vm_size < 1) { | |
971 | dev_warn(adev->dev, "VM size (%d) too small, min is 1GB\n", | |
972 | amdgpu_vm_size); | |
973 | amdgpu_vm_size = 4; | |
974 | } | |
975 | ||
976 | /* | |
977 | * Max GPUVM size for Cayman, SI and CI are 40 bits. | |
978 | */ | |
979 | if (amdgpu_vm_size > 1024) { | |
980 | dev_warn(adev->dev, "VM size (%d) too large, max is 1TB\n", | |
981 | amdgpu_vm_size); | |
982 | amdgpu_vm_size = 4; | |
983 | } | |
984 | ||
985 | /* defines number of bits in page table versus page directory, | |
986 | * a page is 4KB so we have 12 bits offset, minimum 9 bits in the | |
987 | * page table and the remaining bits are in the page directory */ | |
988 | if (amdgpu_vm_block_size == -1) { | |
989 | ||
990 | /* Total bits covered by PD + PTs */ | |
991 | unsigned bits = ilog2(amdgpu_vm_size) + 18; | |
992 | ||
993 | /* Make sure the PD is 4K in size up to 8GB address space. | |
994 | Above that split equal between PD and PTs */ | |
995 | if (amdgpu_vm_size <= 8) | |
996 | amdgpu_vm_block_size = bits - 9; | |
997 | else | |
998 | amdgpu_vm_block_size = (bits + 3) / 2; | |
999 | ||
1000 | } else if (amdgpu_vm_block_size < 9) { | |
1001 | dev_warn(adev->dev, "VM page table size (%d) too small\n", | |
1002 | amdgpu_vm_block_size); | |
1003 | amdgpu_vm_block_size = 9; | |
1004 | } | |
1005 | ||
1006 | if (amdgpu_vm_block_size > 24 || | |
1007 | (amdgpu_vm_size * 1024) < (1ull << amdgpu_vm_block_size)) { | |
1008 | dev_warn(adev->dev, "VM page table size (%d) too large\n", | |
1009 | amdgpu_vm_block_size); | |
1010 | amdgpu_vm_block_size = 9; | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | /** | |
1015 | * amdgpu_switcheroo_set_state - set switcheroo state | |
1016 | * | |
1017 | * @pdev: pci dev pointer | |
1018 | * @state: vga switcheroo state | |
1019 | * | |
1020 | * Callback for the switcheroo driver. Suspends or resumes the | |
1021 | * the asics before or after it is powered up using ACPI methods. | |
1022 | */ | |
1023 | static void amdgpu_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state) | |
1024 | { | |
1025 | struct drm_device *dev = pci_get_drvdata(pdev); | |
1026 | ||
1027 | if (amdgpu_device_is_px(dev) && state == VGA_SWITCHEROO_OFF) | |
1028 | return; | |
1029 | ||
1030 | if (state == VGA_SWITCHEROO_ON) { | |
1031 | unsigned d3_delay = dev->pdev->d3_delay; | |
1032 | ||
1033 | printk(KERN_INFO "amdgpu: switched on\n"); | |
1034 | /* don't suspend or resume card normally */ | |
1035 | dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; | |
1036 | ||
1037 | amdgpu_resume_kms(dev, true, true); | |
1038 | ||
1039 | dev->pdev->d3_delay = d3_delay; | |
1040 | ||
1041 | dev->switch_power_state = DRM_SWITCH_POWER_ON; | |
1042 | drm_kms_helper_poll_enable(dev); | |
1043 | } else { | |
1044 | printk(KERN_INFO "amdgpu: switched off\n"); | |
1045 | drm_kms_helper_poll_disable(dev); | |
1046 | dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; | |
1047 | amdgpu_suspend_kms(dev, true, true); | |
1048 | dev->switch_power_state = DRM_SWITCH_POWER_OFF; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | /** | |
1053 | * amdgpu_switcheroo_can_switch - see if switcheroo state can change | |
1054 | * | |
1055 | * @pdev: pci dev pointer | |
1056 | * | |
1057 | * Callback for the switcheroo driver. Check of the switcheroo | |
1058 | * state can be changed. | |
1059 | * Returns true if the state can be changed, false if not. | |
1060 | */ | |
1061 | static bool amdgpu_switcheroo_can_switch(struct pci_dev *pdev) | |
1062 | { | |
1063 | struct drm_device *dev = pci_get_drvdata(pdev); | |
1064 | ||
1065 | /* | |
1066 | * FIXME: open_count is protected by drm_global_mutex but that would lead to | |
1067 | * locking inversion with the driver load path. And the access here is | |
1068 | * completely racy anyway. So don't bother with locking for now. | |
1069 | */ | |
1070 | return dev->open_count == 0; | |
1071 | } | |
1072 | ||
1073 | static const struct vga_switcheroo_client_ops amdgpu_switcheroo_ops = { | |
1074 | .set_gpu_state = amdgpu_switcheroo_set_state, | |
1075 | .reprobe = NULL, | |
1076 | .can_switch = amdgpu_switcheroo_can_switch, | |
1077 | }; | |
1078 | ||
1079 | int amdgpu_set_clockgating_state(struct amdgpu_device *adev, | |
1080 | enum amdgpu_ip_block_type block_type, | |
1081 | enum amdgpu_clockgating_state state) | |
1082 | { | |
1083 | int i, r = 0; | |
1084 | ||
1085 | for (i = 0; i < adev->num_ip_blocks; i++) { | |
1086 | if (adev->ip_blocks[i].type == block_type) { | |
1087 | r = adev->ip_blocks[i].funcs->set_clockgating_state(adev, | |
1088 | state); | |
1089 | if (r) | |
1090 | return r; | |
1091 | } | |
1092 | } | |
1093 | return r; | |
1094 | } | |
1095 | ||
1096 | int amdgpu_set_powergating_state(struct amdgpu_device *adev, | |
1097 | enum amdgpu_ip_block_type block_type, | |
1098 | enum amdgpu_powergating_state state) | |
1099 | { | |
1100 | int i, r = 0; | |
1101 | ||
1102 | for (i = 0; i < adev->num_ip_blocks; i++) { | |
1103 | if (adev->ip_blocks[i].type == block_type) { | |
1104 | r = adev->ip_blocks[i].funcs->set_powergating_state(adev, | |
1105 | state); | |
1106 | if (r) | |
1107 | return r; | |
1108 | } | |
1109 | } | |
1110 | return r; | |
1111 | } | |
1112 | ||
1113 | const struct amdgpu_ip_block_version * amdgpu_get_ip_block( | |
1114 | struct amdgpu_device *adev, | |
1115 | enum amdgpu_ip_block_type type) | |
1116 | { | |
1117 | int i; | |
1118 | ||
1119 | for (i = 0; i < adev->num_ip_blocks; i++) | |
1120 | if (adev->ip_blocks[i].type == type) | |
1121 | return &adev->ip_blocks[i]; | |
1122 | ||
1123 | return NULL; | |
1124 | } | |
1125 | ||
1126 | /** | |
1127 | * amdgpu_ip_block_version_cmp | |
1128 | * | |
1129 | * @adev: amdgpu_device pointer | |
1130 | * @type: enum amdgpu_ip_block_type | |
1131 | * @major: major version | |
1132 | * @minor: minor version | |
1133 | * | |
1134 | * return 0 if equal or greater | |
1135 | * return 1 if smaller or the ip_block doesn't exist | |
1136 | */ | |
1137 | int amdgpu_ip_block_version_cmp(struct amdgpu_device *adev, | |
1138 | enum amdgpu_ip_block_type type, | |
1139 | u32 major, u32 minor) | |
1140 | { | |
1141 | const struct amdgpu_ip_block_version *ip_block; | |
1142 | ip_block = amdgpu_get_ip_block(adev, type); | |
1143 | ||
1144 | if (ip_block && ((ip_block->major > major) || | |
1145 | ((ip_block->major == major) && | |
1146 | (ip_block->minor >= minor)))) | |
1147 | return 0; | |
1148 | ||
1149 | return 1; | |
1150 | } | |
1151 | ||
1152 | static int amdgpu_early_init(struct amdgpu_device *adev) | |
1153 | { | |
1154 | int i, r = -EINVAL; | |
1155 | ||
1156 | switch (adev->asic_type) { | |
1157 | default: | |
1158 | /* FIXME: not supported yet */ | |
1159 | return -EINVAL; | |
1160 | } | |
1161 | ||
1162 | ||
1163 | ||
1164 | if (adev->ip_blocks == NULL) { | |
1165 | DRM_ERROR("No IP blocks found!\n"); | |
1166 | return r; | |
1167 | } | |
1168 | ||
1169 | for (i = 0; i < adev->num_ip_blocks; i++) { | |
1170 | if ((amdgpu_ip_block_mask & (1 << i)) == 0) { | |
1171 | DRM_ERROR("disabled ip block: %d\n", i); | |
1172 | adev->ip_block_enabled[i] = false; | |
1173 | } else { | |
1174 | if (adev->ip_blocks[i].funcs->early_init) { | |
1175 | r = adev->ip_blocks[i].funcs->early_init(adev); | |
1176 | if (r) | |
1177 | return r; | |
1178 | } | |
1179 | adev->ip_block_enabled[i] = true; | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | return 0; | |
1184 | } | |
1185 | ||
1186 | static int amdgpu_init(struct amdgpu_device *adev) | |
1187 | { | |
1188 | int i, r; | |
1189 | ||
1190 | for (i = 0; i < adev->num_ip_blocks; i++) { | |
1191 | if (!adev->ip_block_enabled[i]) | |
1192 | continue; | |
1193 | r = adev->ip_blocks[i].funcs->sw_init(adev); | |
1194 | if (r) | |
1195 | return r; | |
1196 | /* need to do gmc hw init early so we can allocate gpu mem */ | |
1197 | if (adev->ip_blocks[i].type == AMDGPU_IP_BLOCK_TYPE_GMC) { | |
1198 | r = amdgpu_vram_scratch_init(adev); | |
1199 | if (r) | |
1200 | return r; | |
1201 | r = adev->ip_blocks[i].funcs->hw_init(adev); | |
1202 | if (r) | |
1203 | return r; | |
1204 | r = amdgpu_wb_init(adev); | |
1205 | if (r) | |
1206 | return r; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | for (i = 0; i < adev->num_ip_blocks; i++) { | |
1211 | if (!adev->ip_block_enabled[i]) | |
1212 | continue; | |
1213 | /* gmc hw init is done early */ | |
1214 | if (adev->ip_blocks[i].type == AMDGPU_IP_BLOCK_TYPE_GMC) | |
1215 | continue; | |
1216 | r = adev->ip_blocks[i].funcs->hw_init(adev); | |
1217 | if (r) | |
1218 | return r; | |
1219 | } | |
1220 | ||
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | static int amdgpu_late_init(struct amdgpu_device *adev) | |
1225 | { | |
1226 | int i = 0, r; | |
1227 | ||
1228 | for (i = 0; i < adev->num_ip_blocks; i++) { | |
1229 | if (!adev->ip_block_enabled[i]) | |
1230 | continue; | |
1231 | /* enable clockgating to save power */ | |
1232 | r = adev->ip_blocks[i].funcs->set_clockgating_state(adev, | |
1233 | AMDGPU_CG_STATE_GATE); | |
1234 | if (r) | |
1235 | return r; | |
1236 | if (adev->ip_blocks[i].funcs->late_init) { | |
1237 | r = adev->ip_blocks[i].funcs->late_init(adev); | |
1238 | if (r) | |
1239 | return r; | |
1240 | } | |
1241 | } | |
1242 | ||
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | static int amdgpu_fini(struct amdgpu_device *adev) | |
1247 | { | |
1248 | int i, r; | |
1249 | ||
1250 | for (i = adev->num_ip_blocks - 1; i >= 0; i--) { | |
1251 | if (!adev->ip_block_enabled[i]) | |
1252 | continue; | |
1253 | if (adev->ip_blocks[i].type == AMDGPU_IP_BLOCK_TYPE_GMC) { | |
1254 | amdgpu_wb_fini(adev); | |
1255 | amdgpu_vram_scratch_fini(adev); | |
1256 | } | |
1257 | /* ungate blocks before hw fini so that we can shutdown the blocks safely */ | |
1258 | r = adev->ip_blocks[i].funcs->set_clockgating_state(adev, | |
1259 | AMDGPU_CG_STATE_UNGATE); | |
1260 | if (r) | |
1261 | return r; | |
1262 | r = adev->ip_blocks[i].funcs->hw_fini(adev); | |
1263 | /* XXX handle errors */ | |
1264 | } | |
1265 | ||
1266 | for (i = adev->num_ip_blocks - 1; i >= 0; i--) { | |
1267 | if (!adev->ip_block_enabled[i]) | |
1268 | continue; | |
1269 | r = adev->ip_blocks[i].funcs->sw_fini(adev); | |
1270 | /* XXX handle errors */ | |
1271 | adev->ip_block_enabled[i] = false; | |
1272 | } | |
1273 | ||
1274 | return 0; | |
1275 | } | |
1276 | ||
1277 | static int amdgpu_suspend(struct amdgpu_device *adev) | |
1278 | { | |
1279 | int i, r; | |
1280 | ||
1281 | for (i = adev->num_ip_blocks - 1; i >= 0; i--) { | |
1282 | if (!adev->ip_block_enabled[i]) | |
1283 | continue; | |
1284 | /* ungate blocks so that suspend can properly shut them down */ | |
1285 | r = adev->ip_blocks[i].funcs->set_clockgating_state(adev, | |
1286 | AMDGPU_CG_STATE_UNGATE); | |
1287 | /* XXX handle errors */ | |
1288 | r = adev->ip_blocks[i].funcs->suspend(adev); | |
1289 | /* XXX handle errors */ | |
1290 | } | |
1291 | ||
1292 | return 0; | |
1293 | } | |
1294 | ||
1295 | static int amdgpu_resume(struct amdgpu_device *adev) | |
1296 | { | |
1297 | int i, r; | |
1298 | ||
1299 | for (i = 0; i < adev->num_ip_blocks; i++) { | |
1300 | if (!adev->ip_block_enabled[i]) | |
1301 | continue; | |
1302 | r = adev->ip_blocks[i].funcs->resume(adev); | |
1303 | if (r) | |
1304 | return r; | |
1305 | } | |
1306 | ||
1307 | return 0; | |
1308 | } | |
1309 | ||
1310 | /** | |
1311 | * amdgpu_device_init - initialize the driver | |
1312 | * | |
1313 | * @adev: amdgpu_device pointer | |
1314 | * @pdev: drm dev pointer | |
1315 | * @pdev: pci dev pointer | |
1316 | * @flags: driver flags | |
1317 | * | |
1318 | * Initializes the driver info and hw (all asics). | |
1319 | * Returns 0 for success or an error on failure. | |
1320 | * Called at driver startup. | |
1321 | */ | |
1322 | int amdgpu_device_init(struct amdgpu_device *adev, | |
1323 | struct drm_device *ddev, | |
1324 | struct pci_dev *pdev, | |
1325 | uint32_t flags) | |
1326 | { | |
1327 | int r, i; | |
1328 | bool runtime = false; | |
1329 | ||
1330 | adev->shutdown = false; | |
1331 | adev->dev = &pdev->dev; | |
1332 | adev->ddev = ddev; | |
1333 | adev->pdev = pdev; | |
1334 | adev->flags = flags; | |
1335 | adev->asic_type = flags & AMDGPU_ASIC_MASK; | |
1336 | adev->is_atom_bios = false; | |
1337 | adev->usec_timeout = AMDGPU_MAX_USEC_TIMEOUT; | |
1338 | adev->mc.gtt_size = 512 * 1024 * 1024; | |
1339 | adev->accel_working = false; | |
1340 | adev->num_rings = 0; | |
1341 | adev->mman.buffer_funcs = NULL; | |
1342 | adev->mman.buffer_funcs_ring = NULL; | |
1343 | adev->vm_manager.vm_pte_funcs = NULL; | |
1344 | adev->vm_manager.vm_pte_funcs_ring = NULL; | |
1345 | adev->gart.gart_funcs = NULL; | |
1346 | adev->fence_context = fence_context_alloc(AMDGPU_MAX_RINGS); | |
1347 | ||
1348 | adev->smc_rreg = &amdgpu_invalid_rreg; | |
1349 | adev->smc_wreg = &amdgpu_invalid_wreg; | |
1350 | adev->pcie_rreg = &amdgpu_invalid_rreg; | |
1351 | adev->pcie_wreg = &amdgpu_invalid_wreg; | |
1352 | adev->uvd_ctx_rreg = &amdgpu_invalid_rreg; | |
1353 | adev->uvd_ctx_wreg = &amdgpu_invalid_wreg; | |
1354 | adev->didt_rreg = &amdgpu_invalid_rreg; | |
1355 | adev->didt_wreg = &amdgpu_invalid_wreg; | |
1356 | adev->audio_endpt_rreg = &amdgpu_block_invalid_rreg; | |
1357 | adev->audio_endpt_wreg = &amdgpu_block_invalid_wreg; | |
1358 | ||
1359 | DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X).\n", | |
1360 | amdgpu_asic_name[adev->asic_type], pdev->vendor, pdev->device, | |
1361 | pdev->subsystem_vendor, pdev->subsystem_device); | |
1362 | ||
1363 | /* mutex initialization are all done here so we | |
1364 | * can recall function without having locking issues */ | |
1365 | mutex_init(&adev->ring_lock); | |
1366 | atomic_set(&adev->irq.ih.lock, 0); | |
1367 | mutex_init(&adev->gem.mutex); | |
1368 | mutex_init(&adev->pm.mutex); | |
1369 | mutex_init(&adev->gfx.gpu_clock_mutex); | |
1370 | mutex_init(&adev->srbm_mutex); | |
1371 | mutex_init(&adev->grbm_idx_mutex); | |
1372 | init_rwsem(&adev->pm.mclk_lock); | |
1373 | init_rwsem(&adev->exclusive_lock); | |
1374 | mutex_init(&adev->mn_lock); | |
1375 | hash_init(adev->mn_hash); | |
1376 | ||
1377 | amdgpu_check_arguments(adev); | |
1378 | ||
1379 | /* Registers mapping */ | |
1380 | /* TODO: block userspace mapping of io register */ | |
1381 | spin_lock_init(&adev->mmio_idx_lock); | |
1382 | spin_lock_init(&adev->smc_idx_lock); | |
1383 | spin_lock_init(&adev->pcie_idx_lock); | |
1384 | spin_lock_init(&adev->uvd_ctx_idx_lock); | |
1385 | spin_lock_init(&adev->didt_idx_lock); | |
1386 | spin_lock_init(&adev->audio_endpt_idx_lock); | |
1387 | ||
1388 | adev->rmmio_base = pci_resource_start(adev->pdev, 5); | |
1389 | adev->rmmio_size = pci_resource_len(adev->pdev, 5); | |
1390 | adev->rmmio = ioremap(adev->rmmio_base, adev->rmmio_size); | |
1391 | if (adev->rmmio == NULL) { | |
1392 | return -ENOMEM; | |
1393 | } | |
1394 | DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)adev->rmmio_base); | |
1395 | DRM_INFO("register mmio size: %u\n", (unsigned)adev->rmmio_size); | |
1396 | ||
1397 | /* doorbell bar mapping */ | |
1398 | amdgpu_doorbell_init(adev); | |
1399 | ||
1400 | /* io port mapping */ | |
1401 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
1402 | if (pci_resource_flags(adev->pdev, i) & IORESOURCE_IO) { | |
1403 | adev->rio_mem_size = pci_resource_len(adev->pdev, i); | |
1404 | adev->rio_mem = pci_iomap(adev->pdev, i, adev->rio_mem_size); | |
1405 | break; | |
1406 | } | |
1407 | } | |
1408 | if (adev->rio_mem == NULL) | |
1409 | DRM_ERROR("Unable to find PCI I/O BAR\n"); | |
1410 | ||
1411 | /* early init functions */ | |
1412 | r = amdgpu_early_init(adev); | |
1413 | if (r) | |
1414 | return r; | |
1415 | ||
1416 | /* if we have > 1 VGA cards, then disable the amdgpu VGA resources */ | |
1417 | /* this will fail for cards that aren't VGA class devices, just | |
1418 | * ignore it */ | |
1419 | vga_client_register(adev->pdev, adev, NULL, amdgpu_vga_set_decode); | |
1420 | ||
1421 | if (amdgpu_runtime_pm == 1) | |
1422 | runtime = true; | |
1423 | if (amdgpu_device_is_px(ddev)) | |
1424 | runtime = true; | |
1425 | vga_switcheroo_register_client(adev->pdev, &amdgpu_switcheroo_ops, runtime); | |
1426 | if (runtime) | |
1427 | vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain); | |
1428 | ||
1429 | /* Read BIOS */ | |
1430 | if (!amdgpu_get_bios(adev)) | |
1431 | return -EINVAL; | |
1432 | /* Must be an ATOMBIOS */ | |
1433 | if (!adev->is_atom_bios) { | |
1434 | dev_err(adev->dev, "Expecting atombios for GPU\n"); | |
1435 | return -EINVAL; | |
1436 | } | |
1437 | r = amdgpu_atombios_init(adev); | |
1438 | if (r) | |
1439 | return r; | |
1440 | ||
1441 | /* Post card if necessary */ | |
1442 | if (!amdgpu_card_posted(adev)) { | |
1443 | if (!adev->bios) { | |
1444 | dev_err(adev->dev, "Card not posted and no BIOS - ignoring\n"); | |
1445 | return -EINVAL; | |
1446 | } | |
1447 | DRM_INFO("GPU not posted. posting now...\n"); | |
1448 | amdgpu_atom_asic_init(adev->mode_info.atom_context); | |
1449 | } | |
1450 | ||
1451 | /* Initialize clocks */ | |
1452 | r = amdgpu_atombios_get_clock_info(adev); | |
1453 | if (r) | |
1454 | return r; | |
1455 | /* init i2c buses */ | |
1456 | amdgpu_atombios_i2c_init(adev); | |
1457 | ||
1458 | /* Fence driver */ | |
1459 | r = amdgpu_fence_driver_init(adev); | |
1460 | if (r) | |
1461 | return r; | |
1462 | ||
1463 | /* init the mode config */ | |
1464 | drm_mode_config_init(adev->ddev); | |
1465 | ||
1466 | r = amdgpu_init(adev); | |
1467 | if (r) { | |
1468 | amdgpu_fini(adev); | |
1469 | return r; | |
1470 | } | |
1471 | ||
1472 | adev->accel_working = true; | |
1473 | ||
1474 | amdgpu_fbdev_init(adev); | |
1475 | ||
1476 | r = amdgpu_ib_pool_init(adev); | |
1477 | if (r) { | |
1478 | dev_err(adev->dev, "IB initialization failed (%d).\n", r); | |
1479 | return r; | |
1480 | } | |
1481 | ||
1482 | r = amdgpu_ib_ring_tests(adev); | |
1483 | if (r) | |
1484 | DRM_ERROR("ib ring test failed (%d).\n", r); | |
1485 | ||
1486 | r = amdgpu_gem_debugfs_init(adev); | |
1487 | if (r) { | |
1488 | DRM_ERROR("registering gem debugfs failed (%d).\n", r); | |
1489 | } | |
1490 | ||
1491 | r = amdgpu_debugfs_regs_init(adev); | |
1492 | if (r) { | |
1493 | DRM_ERROR("registering register debugfs failed (%d).\n", r); | |
1494 | } | |
1495 | ||
1496 | if ((amdgpu_testing & 1)) { | |
1497 | if (adev->accel_working) | |
1498 | amdgpu_test_moves(adev); | |
1499 | else | |
1500 | DRM_INFO("amdgpu: acceleration disabled, skipping move tests\n"); | |
1501 | } | |
1502 | if ((amdgpu_testing & 2)) { | |
1503 | if (adev->accel_working) | |
1504 | amdgpu_test_syncing(adev); | |
1505 | else | |
1506 | DRM_INFO("amdgpu: acceleration disabled, skipping sync tests\n"); | |
1507 | } | |
1508 | if (amdgpu_benchmarking) { | |
1509 | if (adev->accel_working) | |
1510 | amdgpu_benchmark(adev, amdgpu_benchmarking); | |
1511 | else | |
1512 | DRM_INFO("amdgpu: acceleration disabled, skipping benchmarks\n"); | |
1513 | } | |
1514 | ||
1515 | /* enable clockgating, etc. after ib tests, etc. since some blocks require | |
1516 | * explicit gating rather than handling it automatically. | |
1517 | */ | |
1518 | r = amdgpu_late_init(adev); | |
1519 | if (r) | |
1520 | return r; | |
1521 | ||
1522 | return 0; | |
1523 | } | |
1524 | ||
1525 | static void amdgpu_debugfs_remove_files(struct amdgpu_device *adev); | |
1526 | ||
1527 | /** | |
1528 | * amdgpu_device_fini - tear down the driver | |
1529 | * | |
1530 | * @adev: amdgpu_device pointer | |
1531 | * | |
1532 | * Tear down the driver info (all asics). | |
1533 | * Called at driver shutdown. | |
1534 | */ | |
1535 | void amdgpu_device_fini(struct amdgpu_device *adev) | |
1536 | { | |
1537 | int r; | |
1538 | ||
1539 | DRM_INFO("amdgpu: finishing device.\n"); | |
1540 | adev->shutdown = true; | |
1541 | /* evict vram memory */ | |
1542 | amdgpu_bo_evict_vram(adev); | |
1543 | amdgpu_ib_pool_fini(adev); | |
1544 | amdgpu_fence_driver_fini(adev); | |
1545 | amdgpu_fbdev_fini(adev); | |
1546 | r = amdgpu_fini(adev); | |
1547 | if (adev->ip_block_enabled) | |
1548 | kfree(adev->ip_block_enabled); | |
1549 | adev->ip_block_enabled = NULL; | |
1550 | adev->accel_working = false; | |
1551 | /* free i2c buses */ | |
1552 | amdgpu_i2c_fini(adev); | |
1553 | amdgpu_atombios_fini(adev); | |
1554 | kfree(adev->bios); | |
1555 | adev->bios = NULL; | |
1556 | vga_switcheroo_unregister_client(adev->pdev); | |
1557 | vga_client_register(adev->pdev, NULL, NULL, NULL); | |
1558 | if (adev->rio_mem) | |
1559 | pci_iounmap(adev->pdev, adev->rio_mem); | |
1560 | adev->rio_mem = NULL; | |
1561 | iounmap(adev->rmmio); | |
1562 | adev->rmmio = NULL; | |
1563 | amdgpu_doorbell_fini(adev); | |
1564 | amdgpu_debugfs_regs_cleanup(adev); | |
1565 | amdgpu_debugfs_remove_files(adev); | |
1566 | } | |
1567 | ||
1568 | ||
1569 | /* | |
1570 | * Suspend & resume. | |
1571 | */ | |
1572 | /** | |
1573 | * amdgpu_suspend_kms - initiate device suspend | |
1574 | * | |
1575 | * @pdev: drm dev pointer | |
1576 | * @state: suspend state | |
1577 | * | |
1578 | * Puts the hw in the suspend state (all asics). | |
1579 | * Returns 0 for success or an error on failure. | |
1580 | * Called at driver suspend. | |
1581 | */ | |
1582 | int amdgpu_suspend_kms(struct drm_device *dev, bool suspend, bool fbcon) | |
1583 | { | |
1584 | struct amdgpu_device *adev; | |
1585 | struct drm_crtc *crtc; | |
1586 | struct drm_connector *connector; | |
1587 | int i, r; | |
1588 | bool force_completion = false; | |
1589 | ||
1590 | if (dev == NULL || dev->dev_private == NULL) { | |
1591 | return -ENODEV; | |
1592 | } | |
1593 | ||
1594 | adev = dev->dev_private; | |
1595 | ||
1596 | if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) | |
1597 | return 0; | |
1598 | ||
1599 | drm_kms_helper_poll_disable(dev); | |
1600 | ||
1601 | /* turn off display hw */ | |
1602 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1603 | drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); | |
1604 | } | |
1605 | ||
1606 | /* unpin the front buffers */ | |
1607 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
1608 | struct amdgpu_framebuffer *rfb = to_amdgpu_framebuffer(crtc->primary->fb); | |
1609 | struct amdgpu_bo *robj; | |
1610 | ||
1611 | if (rfb == NULL || rfb->obj == NULL) { | |
1612 | continue; | |
1613 | } | |
1614 | robj = gem_to_amdgpu_bo(rfb->obj); | |
1615 | /* don't unpin kernel fb objects */ | |
1616 | if (!amdgpu_fbdev_robj_is_fb(adev, robj)) { | |
1617 | r = amdgpu_bo_reserve(robj, false); | |
1618 | if (r == 0) { | |
1619 | amdgpu_bo_unpin(robj); | |
1620 | amdgpu_bo_unreserve(robj); | |
1621 | } | |
1622 | } | |
1623 | } | |
1624 | /* evict vram memory */ | |
1625 | amdgpu_bo_evict_vram(adev); | |
1626 | ||
1627 | /* wait for gpu to finish processing current batch */ | |
1628 | for (i = 0; i < AMDGPU_MAX_RINGS; i++) { | |
1629 | struct amdgpu_ring *ring = adev->rings[i]; | |
1630 | if (!ring) | |
1631 | continue; | |
1632 | ||
1633 | r = amdgpu_fence_wait_empty(ring); | |
1634 | if (r) { | |
1635 | /* delay GPU reset to resume */ | |
1636 | force_completion = true; | |
1637 | } | |
1638 | } | |
1639 | if (force_completion) { | |
1640 | amdgpu_fence_driver_force_completion(adev); | |
1641 | } | |
1642 | ||
1643 | r = amdgpu_suspend(adev); | |
1644 | ||
1645 | /* evict remaining vram memory */ | |
1646 | amdgpu_bo_evict_vram(adev); | |
1647 | ||
1648 | pci_save_state(dev->pdev); | |
1649 | if (suspend) { | |
1650 | /* Shut down the device */ | |
1651 | pci_disable_device(dev->pdev); | |
1652 | pci_set_power_state(dev->pdev, PCI_D3hot); | |
1653 | } | |
1654 | ||
1655 | if (fbcon) { | |
1656 | console_lock(); | |
1657 | amdgpu_fbdev_set_suspend(adev, 1); | |
1658 | console_unlock(); | |
1659 | } | |
1660 | return 0; | |
1661 | } | |
1662 | ||
1663 | /** | |
1664 | * amdgpu_resume_kms - initiate device resume | |
1665 | * | |
1666 | * @pdev: drm dev pointer | |
1667 | * | |
1668 | * Bring the hw back to operating state (all asics). | |
1669 | * Returns 0 for success or an error on failure. | |
1670 | * Called at driver resume. | |
1671 | */ | |
1672 | int amdgpu_resume_kms(struct drm_device *dev, bool resume, bool fbcon) | |
1673 | { | |
1674 | struct drm_connector *connector; | |
1675 | struct amdgpu_device *adev = dev->dev_private; | |
1676 | int r; | |
1677 | ||
1678 | if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) | |
1679 | return 0; | |
1680 | ||
1681 | if (fbcon) { | |
1682 | console_lock(); | |
1683 | } | |
1684 | if (resume) { | |
1685 | pci_set_power_state(dev->pdev, PCI_D0); | |
1686 | pci_restore_state(dev->pdev); | |
1687 | if (pci_enable_device(dev->pdev)) { | |
1688 | if (fbcon) | |
1689 | console_unlock(); | |
1690 | return -1; | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | /* post card */ | |
1695 | amdgpu_atom_asic_init(adev->mode_info.atom_context); | |
1696 | ||
1697 | r = amdgpu_resume(adev); | |
1698 | ||
1699 | r = amdgpu_ib_ring_tests(adev); | |
1700 | if (r) | |
1701 | DRM_ERROR("ib ring test failed (%d).\n", r); | |
1702 | ||
1703 | r = amdgpu_late_init(adev); | |
1704 | if (r) | |
1705 | return r; | |
1706 | ||
1707 | /* blat the mode back in */ | |
1708 | if (fbcon) { | |
1709 | drm_helper_resume_force_mode(dev); | |
1710 | /* turn on display hw */ | |
1711 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1712 | drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON); | |
1713 | } | |
1714 | } | |
1715 | ||
1716 | drm_kms_helper_poll_enable(dev); | |
1717 | ||
1718 | if (fbcon) { | |
1719 | amdgpu_fbdev_set_suspend(adev, 0); | |
1720 | console_unlock(); | |
1721 | } | |
1722 | ||
1723 | return 0; | |
1724 | } | |
1725 | ||
1726 | /** | |
1727 | * amdgpu_gpu_reset - reset the asic | |
1728 | * | |
1729 | * @adev: amdgpu device pointer | |
1730 | * | |
1731 | * Attempt the reset the GPU if it has hung (all asics). | |
1732 | * Returns 0 for success or an error on failure. | |
1733 | */ | |
1734 | int amdgpu_gpu_reset(struct amdgpu_device *adev) | |
1735 | { | |
1736 | unsigned ring_sizes[AMDGPU_MAX_RINGS]; | |
1737 | uint32_t *ring_data[AMDGPU_MAX_RINGS]; | |
1738 | ||
1739 | bool saved = false; | |
1740 | ||
1741 | int i, r; | |
1742 | int resched; | |
1743 | ||
1744 | down_write(&adev->exclusive_lock); | |
1745 | ||
1746 | if (!adev->needs_reset) { | |
1747 | up_write(&adev->exclusive_lock); | |
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | adev->needs_reset = false; | |
1752 | ||
1753 | /* block TTM */ | |
1754 | resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev); | |
1755 | ||
1756 | r = amdgpu_suspend(adev); | |
1757 | ||
1758 | for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { | |
1759 | struct amdgpu_ring *ring = adev->rings[i]; | |
1760 | if (!ring) | |
1761 | continue; | |
1762 | ||
1763 | ring_sizes[i] = amdgpu_ring_backup(ring, &ring_data[i]); | |
1764 | if (ring_sizes[i]) { | |
1765 | saved = true; | |
1766 | dev_info(adev->dev, "Saved %d dwords of commands " | |
1767 | "on ring %d.\n", ring_sizes[i], i); | |
1768 | } | |
1769 | } | |
1770 | ||
1771 | retry: | |
1772 | r = amdgpu_asic_reset(adev); | |
1773 | if (!r) { | |
1774 | dev_info(adev->dev, "GPU reset succeeded, trying to resume\n"); | |
1775 | r = amdgpu_resume(adev); | |
1776 | } | |
1777 | ||
1778 | if (!r) { | |
1779 | for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { | |
1780 | struct amdgpu_ring *ring = adev->rings[i]; | |
1781 | if (!ring) | |
1782 | continue; | |
1783 | ||
1784 | amdgpu_ring_restore(ring, ring_sizes[i], ring_data[i]); | |
1785 | ring_sizes[i] = 0; | |
1786 | ring_data[i] = NULL; | |
1787 | } | |
1788 | ||
1789 | r = amdgpu_ib_ring_tests(adev); | |
1790 | if (r) { | |
1791 | dev_err(adev->dev, "ib ring test failed (%d).\n", r); | |
1792 | if (saved) { | |
1793 | saved = false; | |
1794 | r = amdgpu_suspend(adev); | |
1795 | goto retry; | |
1796 | } | |
1797 | } | |
1798 | } else { | |
1799 | amdgpu_fence_driver_force_completion(adev); | |
1800 | for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { | |
1801 | if (adev->rings[i]) | |
1802 | kfree(ring_data[i]); | |
1803 | } | |
1804 | } | |
1805 | ||
1806 | drm_helper_resume_force_mode(adev->ddev); | |
1807 | ||
1808 | ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched); | |
1809 | if (r) { | |
1810 | /* bad news, how to tell it to userspace ? */ | |
1811 | dev_info(adev->dev, "GPU reset failed\n"); | |
1812 | } | |
1813 | ||
1814 | up_write(&adev->exclusive_lock); | |
1815 | return r; | |
1816 | } | |
1817 | ||
1818 | ||
1819 | /* | |
1820 | * Debugfs | |
1821 | */ | |
1822 | int amdgpu_debugfs_add_files(struct amdgpu_device *adev, | |
1823 | struct drm_info_list *files, | |
1824 | unsigned nfiles) | |
1825 | { | |
1826 | unsigned i; | |
1827 | ||
1828 | for (i = 0; i < adev->debugfs_count; i++) { | |
1829 | if (adev->debugfs[i].files == files) { | |
1830 | /* Already registered */ | |
1831 | return 0; | |
1832 | } | |
1833 | } | |
1834 | ||
1835 | i = adev->debugfs_count + 1; | |
1836 | if (i > AMDGPU_DEBUGFS_MAX_COMPONENTS) { | |
1837 | DRM_ERROR("Reached maximum number of debugfs components.\n"); | |
1838 | DRM_ERROR("Report so we increase " | |
1839 | "AMDGPU_DEBUGFS_MAX_COMPONENTS.\n"); | |
1840 | return -EINVAL; | |
1841 | } | |
1842 | adev->debugfs[adev->debugfs_count].files = files; | |
1843 | adev->debugfs[adev->debugfs_count].num_files = nfiles; | |
1844 | adev->debugfs_count = i; | |
1845 | #if defined(CONFIG_DEBUG_FS) | |
1846 | drm_debugfs_create_files(files, nfiles, | |
1847 | adev->ddev->control->debugfs_root, | |
1848 | adev->ddev->control); | |
1849 | drm_debugfs_create_files(files, nfiles, | |
1850 | adev->ddev->primary->debugfs_root, | |
1851 | adev->ddev->primary); | |
1852 | #endif | |
1853 | return 0; | |
1854 | } | |
1855 | ||
1856 | static void amdgpu_debugfs_remove_files(struct amdgpu_device *adev) | |
1857 | { | |
1858 | #if defined(CONFIG_DEBUG_FS) | |
1859 | unsigned i; | |
1860 | ||
1861 | for (i = 0; i < adev->debugfs_count; i++) { | |
1862 | drm_debugfs_remove_files(adev->debugfs[i].files, | |
1863 | adev->debugfs[i].num_files, | |
1864 | adev->ddev->control); | |
1865 | drm_debugfs_remove_files(adev->debugfs[i].files, | |
1866 | adev->debugfs[i].num_files, | |
1867 | adev->ddev->primary); | |
1868 | } | |
1869 | #endif | |
1870 | } | |
1871 | ||
1872 | #if defined(CONFIG_DEBUG_FS) | |
1873 | ||
1874 | static ssize_t amdgpu_debugfs_regs_read(struct file *f, char __user *buf, | |
1875 | size_t size, loff_t *pos) | |
1876 | { | |
1877 | struct amdgpu_device *adev = f->f_inode->i_private; | |
1878 | ssize_t result = 0; | |
1879 | int r; | |
1880 | ||
1881 | if (size & 0x3 || *pos & 0x3) | |
1882 | return -EINVAL; | |
1883 | ||
1884 | while (size) { | |
1885 | uint32_t value; | |
1886 | ||
1887 | if (*pos > adev->rmmio_size) | |
1888 | return result; | |
1889 | ||
1890 | value = RREG32(*pos >> 2); | |
1891 | r = put_user(value, (uint32_t *)buf); | |
1892 | if (r) | |
1893 | return r; | |
1894 | ||
1895 | result += 4; | |
1896 | buf += 4; | |
1897 | *pos += 4; | |
1898 | size -= 4; | |
1899 | } | |
1900 | ||
1901 | return result; | |
1902 | } | |
1903 | ||
1904 | static ssize_t amdgpu_debugfs_regs_write(struct file *f, const char __user *buf, | |
1905 | size_t size, loff_t *pos) | |
1906 | { | |
1907 | struct amdgpu_device *adev = f->f_inode->i_private; | |
1908 | ssize_t result = 0; | |
1909 | int r; | |
1910 | ||
1911 | if (size & 0x3 || *pos & 0x3) | |
1912 | return -EINVAL; | |
1913 | ||
1914 | while (size) { | |
1915 | uint32_t value; | |
1916 | ||
1917 | if (*pos > adev->rmmio_size) | |
1918 | return result; | |
1919 | ||
1920 | r = get_user(value, (uint32_t *)buf); | |
1921 | if (r) | |
1922 | return r; | |
1923 | ||
1924 | WREG32(*pos >> 2, value); | |
1925 | ||
1926 | result += 4; | |
1927 | buf += 4; | |
1928 | *pos += 4; | |
1929 | size -= 4; | |
1930 | } | |
1931 | ||
1932 | return result; | |
1933 | } | |
1934 | ||
1935 | static const struct file_operations amdgpu_debugfs_regs_fops = { | |
1936 | .owner = THIS_MODULE, | |
1937 | .read = amdgpu_debugfs_regs_read, | |
1938 | .write = amdgpu_debugfs_regs_write, | |
1939 | .llseek = default_llseek | |
1940 | }; | |
1941 | ||
1942 | static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev) | |
1943 | { | |
1944 | struct drm_minor *minor = adev->ddev->primary; | |
1945 | struct dentry *ent, *root = minor->debugfs_root; | |
1946 | ||
1947 | ent = debugfs_create_file("amdgpu_regs", S_IFREG | S_IRUGO, root, | |
1948 | adev, &amdgpu_debugfs_regs_fops); | |
1949 | if (IS_ERR(ent)) | |
1950 | return PTR_ERR(ent); | |
1951 | i_size_write(ent->d_inode, adev->rmmio_size); | |
1952 | adev->debugfs_regs = ent; | |
1953 | ||
1954 | return 0; | |
1955 | } | |
1956 | ||
1957 | static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev) | |
1958 | { | |
1959 | debugfs_remove(adev->debugfs_regs); | |
1960 | adev->debugfs_regs = NULL; | |
1961 | } | |
1962 | ||
1963 | int amdgpu_debugfs_init(struct drm_minor *minor) | |
1964 | { | |
1965 | return 0; | |
1966 | } | |
1967 | ||
1968 | void amdgpu_debugfs_cleanup(struct drm_minor *minor) | |
1969 | { | |
1970 | } | |
1971 | #endif |