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76aaf220 DV |
1 | /* |
2 | * Copyright © 2010 Daniel Vetter | |
c4ac524c | 3 | * Copyright © 2011-2014 Intel Corporation |
76aaf220 DV |
4 | * |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice (including the next | |
13 | * paragraph) shall be included in all copies or substantial portions of the | |
14 | * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
22 | * IN THE SOFTWARE. | |
23 | * | |
24 | */ | |
25 | ||
0e46ce2e | 26 | #include <linux/seq_file.h> |
5bab6f60 | 27 | #include <linux/stop_machine.h> |
760285e7 DH |
28 | #include <drm/drmP.h> |
29 | #include <drm/i915_drm.h> | |
76aaf220 | 30 | #include "i915_drv.h" |
5dda8fa3 | 31 | #include "i915_vgpu.h" |
76aaf220 DV |
32 | #include "i915_trace.h" |
33 | #include "intel_drv.h" | |
34 | ||
45f8f69a TU |
35 | /** |
36 | * DOC: Global GTT views | |
37 | * | |
38 | * Background and previous state | |
39 | * | |
40 | * Historically objects could exists (be bound) in global GTT space only as | |
41 | * singular instances with a view representing all of the object's backing pages | |
42 | * in a linear fashion. This view will be called a normal view. | |
43 | * | |
44 | * To support multiple views of the same object, where the number of mapped | |
45 | * pages is not equal to the backing store, or where the layout of the pages | |
46 | * is not linear, concept of a GGTT view was added. | |
47 | * | |
48 | * One example of an alternative view is a stereo display driven by a single | |
49 | * image. In this case we would have a framebuffer looking like this | |
50 | * (2x2 pages): | |
51 | * | |
52 | * 12 | |
53 | * 34 | |
54 | * | |
55 | * Above would represent a normal GGTT view as normally mapped for GPU or CPU | |
56 | * rendering. In contrast, fed to the display engine would be an alternative | |
57 | * view which could look something like this: | |
58 | * | |
59 | * 1212 | |
60 | * 3434 | |
61 | * | |
62 | * In this example both the size and layout of pages in the alternative view is | |
63 | * different from the normal view. | |
64 | * | |
65 | * Implementation and usage | |
66 | * | |
67 | * GGTT views are implemented using VMAs and are distinguished via enum | |
68 | * i915_ggtt_view_type and struct i915_ggtt_view. | |
69 | * | |
70 | * A new flavour of core GEM functions which work with GGTT bound objects were | |
ec7adb6e JL |
71 | * added with the _ggtt_ infix, and sometimes with _view postfix to avoid |
72 | * renaming in large amounts of code. They take the struct i915_ggtt_view | |
73 | * parameter encapsulating all metadata required to implement a view. | |
45f8f69a TU |
74 | * |
75 | * As a helper for callers which are only interested in the normal view, | |
76 | * globally const i915_ggtt_view_normal singleton instance exists. All old core | |
77 | * GEM API functions, the ones not taking the view parameter, are operating on, | |
78 | * or with the normal GGTT view. | |
79 | * | |
80 | * Code wanting to add or use a new GGTT view needs to: | |
81 | * | |
82 | * 1. Add a new enum with a suitable name. | |
83 | * 2. Extend the metadata in the i915_ggtt_view structure if required. | |
84 | * 3. Add support to i915_get_vma_pages(). | |
85 | * | |
86 | * New views are required to build a scatter-gather table from within the | |
87 | * i915_get_vma_pages function. This table is stored in the vma.ggtt_view and | |
88 | * exists for the lifetime of an VMA. | |
89 | * | |
90 | * Core API is designed to have copy semantics which means that passed in | |
91 | * struct i915_ggtt_view does not need to be persistent (left around after | |
92 | * calling the core API functions). | |
93 | * | |
94 | */ | |
95 | ||
70b9f6f8 DV |
96 | static int |
97 | i915_get_ggtt_vma_pages(struct i915_vma *vma); | |
98 | ||
b5e16987 VS |
99 | const struct i915_ggtt_view i915_ggtt_view_normal = { |
100 | .type = I915_GGTT_VIEW_NORMAL, | |
101 | }; | |
9abc4648 | 102 | const struct i915_ggtt_view i915_ggtt_view_rotated = { |
b5e16987 | 103 | .type = I915_GGTT_VIEW_ROTATED, |
9abc4648 | 104 | }; |
fe14d5f4 | 105 | |
cfa7c862 DV |
106 | static int sanitize_enable_ppgtt(struct drm_device *dev, int enable_ppgtt) |
107 | { | |
1893a71b CW |
108 | bool has_aliasing_ppgtt; |
109 | bool has_full_ppgtt; | |
1f9a99e0 | 110 | bool has_full_48bit_ppgtt; |
1893a71b CW |
111 | |
112 | has_aliasing_ppgtt = INTEL_INFO(dev)->gen >= 6; | |
113 | has_full_ppgtt = INTEL_INFO(dev)->gen >= 7; | |
1f9a99e0 | 114 | has_full_48bit_ppgtt = IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9; |
1893a71b | 115 | |
71ba2d64 YZ |
116 | if (intel_vgpu_active(dev)) |
117 | has_full_ppgtt = false; /* emulation is too hard */ | |
118 | ||
70ee45e1 DL |
119 | /* |
120 | * We don't allow disabling PPGTT for gen9+ as it's a requirement for | |
121 | * execlists, the sole mechanism available to submit work. | |
122 | */ | |
123 | if (INTEL_INFO(dev)->gen < 9 && | |
124 | (enable_ppgtt == 0 || !has_aliasing_ppgtt)) | |
cfa7c862 DV |
125 | return 0; |
126 | ||
127 | if (enable_ppgtt == 1) | |
128 | return 1; | |
129 | ||
1893a71b | 130 | if (enable_ppgtt == 2 && has_full_ppgtt) |
cfa7c862 DV |
131 | return 2; |
132 | ||
1f9a99e0 MT |
133 | if (enable_ppgtt == 3 && has_full_48bit_ppgtt) |
134 | return 3; | |
135 | ||
93a25a9e DV |
136 | #ifdef CONFIG_INTEL_IOMMU |
137 | /* Disable ppgtt on SNB if VT-d is on. */ | |
138 | if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped) { | |
139 | DRM_INFO("Disabling PPGTT because VT-d is on\n"); | |
cfa7c862 | 140 | return 0; |
93a25a9e DV |
141 | } |
142 | #endif | |
143 | ||
62942ed7 | 144 | /* Early VLV doesn't have this */ |
666a4537 | 145 | if (IS_VALLEYVIEW(dev) && dev->pdev->revision < 0xb) { |
62942ed7 JB |
146 | DRM_DEBUG_DRIVER("disabling PPGTT on pre-B3 step VLV\n"); |
147 | return 0; | |
148 | } | |
149 | ||
2f82bbdf | 150 | if (INTEL_INFO(dev)->gen >= 8 && i915.enable_execlists) |
1f9a99e0 | 151 | return has_full_48bit_ppgtt ? 3 : 2; |
2f82bbdf MT |
152 | else |
153 | return has_aliasing_ppgtt ? 1 : 0; | |
93a25a9e DV |
154 | } |
155 | ||
70b9f6f8 DV |
156 | static int ppgtt_bind_vma(struct i915_vma *vma, |
157 | enum i915_cache_level cache_level, | |
158 | u32 unused) | |
47552659 DV |
159 | { |
160 | u32 pte_flags = 0; | |
161 | ||
162 | /* Currently applicable only to VLV */ | |
163 | if (vma->obj->gt_ro) | |
164 | pte_flags |= PTE_READ_ONLY; | |
165 | ||
166 | vma->vm->insert_entries(vma->vm, vma->obj->pages, vma->node.start, | |
167 | cache_level, pte_flags); | |
70b9f6f8 DV |
168 | |
169 | return 0; | |
47552659 DV |
170 | } |
171 | ||
172 | static void ppgtt_unbind_vma(struct i915_vma *vma) | |
173 | { | |
174 | vma->vm->clear_range(vma->vm, | |
175 | vma->node.start, | |
176 | vma->obj->base.size, | |
177 | true); | |
178 | } | |
6f65e29a | 179 | |
2c642b07 DV |
180 | static gen8_pte_t gen8_pte_encode(dma_addr_t addr, |
181 | enum i915_cache_level level, | |
182 | bool valid) | |
94ec8f61 | 183 | { |
07749ef3 | 184 | gen8_pte_t pte = valid ? _PAGE_PRESENT | _PAGE_RW : 0; |
94ec8f61 | 185 | pte |= addr; |
63c42e56 BW |
186 | |
187 | switch (level) { | |
188 | case I915_CACHE_NONE: | |
fbe5d36e | 189 | pte |= PPAT_UNCACHED_INDEX; |
63c42e56 BW |
190 | break; |
191 | case I915_CACHE_WT: | |
192 | pte |= PPAT_DISPLAY_ELLC_INDEX; | |
193 | break; | |
194 | default: | |
195 | pte |= PPAT_CACHED_INDEX; | |
196 | break; | |
197 | } | |
198 | ||
94ec8f61 BW |
199 | return pte; |
200 | } | |
201 | ||
fe36f55d MK |
202 | static gen8_pde_t gen8_pde_encode(const dma_addr_t addr, |
203 | const enum i915_cache_level level) | |
b1fe6673 | 204 | { |
07749ef3 | 205 | gen8_pde_t pde = _PAGE_PRESENT | _PAGE_RW; |
b1fe6673 BW |
206 | pde |= addr; |
207 | if (level != I915_CACHE_NONE) | |
208 | pde |= PPAT_CACHED_PDE_INDEX; | |
209 | else | |
210 | pde |= PPAT_UNCACHED_INDEX; | |
211 | return pde; | |
212 | } | |
213 | ||
762d9936 MT |
214 | #define gen8_pdpe_encode gen8_pde_encode |
215 | #define gen8_pml4e_encode gen8_pde_encode | |
216 | ||
07749ef3 MT |
217 | static gen6_pte_t snb_pte_encode(dma_addr_t addr, |
218 | enum i915_cache_level level, | |
219 | bool valid, u32 unused) | |
54d12527 | 220 | { |
07749ef3 | 221 | gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
54d12527 | 222 | pte |= GEN6_PTE_ADDR_ENCODE(addr); |
e7210c3c BW |
223 | |
224 | switch (level) { | |
350ec881 CW |
225 | case I915_CACHE_L3_LLC: |
226 | case I915_CACHE_LLC: | |
227 | pte |= GEN6_PTE_CACHE_LLC; | |
228 | break; | |
229 | case I915_CACHE_NONE: | |
230 | pte |= GEN6_PTE_UNCACHED; | |
231 | break; | |
232 | default: | |
5f77eeb0 | 233 | MISSING_CASE(level); |
350ec881 CW |
234 | } |
235 | ||
236 | return pte; | |
237 | } | |
238 | ||
07749ef3 MT |
239 | static gen6_pte_t ivb_pte_encode(dma_addr_t addr, |
240 | enum i915_cache_level level, | |
241 | bool valid, u32 unused) | |
350ec881 | 242 | { |
07749ef3 | 243 | gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
350ec881 CW |
244 | pte |= GEN6_PTE_ADDR_ENCODE(addr); |
245 | ||
246 | switch (level) { | |
247 | case I915_CACHE_L3_LLC: | |
248 | pte |= GEN7_PTE_CACHE_L3_LLC; | |
e7210c3c BW |
249 | break; |
250 | case I915_CACHE_LLC: | |
251 | pte |= GEN6_PTE_CACHE_LLC; | |
252 | break; | |
253 | case I915_CACHE_NONE: | |
9119708c | 254 | pte |= GEN6_PTE_UNCACHED; |
e7210c3c BW |
255 | break; |
256 | default: | |
5f77eeb0 | 257 | MISSING_CASE(level); |
e7210c3c BW |
258 | } |
259 | ||
54d12527 BW |
260 | return pte; |
261 | } | |
262 | ||
07749ef3 MT |
263 | static gen6_pte_t byt_pte_encode(dma_addr_t addr, |
264 | enum i915_cache_level level, | |
265 | bool valid, u32 flags) | |
93c34e70 | 266 | { |
07749ef3 | 267 | gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
93c34e70 KG |
268 | pte |= GEN6_PTE_ADDR_ENCODE(addr); |
269 | ||
24f3a8cf AG |
270 | if (!(flags & PTE_READ_ONLY)) |
271 | pte |= BYT_PTE_WRITEABLE; | |
93c34e70 KG |
272 | |
273 | if (level != I915_CACHE_NONE) | |
274 | pte |= BYT_PTE_SNOOPED_BY_CPU_CACHES; | |
275 | ||
276 | return pte; | |
277 | } | |
278 | ||
07749ef3 MT |
279 | static gen6_pte_t hsw_pte_encode(dma_addr_t addr, |
280 | enum i915_cache_level level, | |
281 | bool valid, u32 unused) | |
9119708c | 282 | { |
07749ef3 | 283 | gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
0d8ff15e | 284 | pte |= HSW_PTE_ADDR_ENCODE(addr); |
9119708c KG |
285 | |
286 | if (level != I915_CACHE_NONE) | |
87a6b688 | 287 | pte |= HSW_WB_LLC_AGE3; |
9119708c KG |
288 | |
289 | return pte; | |
290 | } | |
291 | ||
07749ef3 MT |
292 | static gen6_pte_t iris_pte_encode(dma_addr_t addr, |
293 | enum i915_cache_level level, | |
294 | bool valid, u32 unused) | |
4d15c145 | 295 | { |
07749ef3 | 296 | gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
4d15c145 BW |
297 | pte |= HSW_PTE_ADDR_ENCODE(addr); |
298 | ||
651d794f CW |
299 | switch (level) { |
300 | case I915_CACHE_NONE: | |
301 | break; | |
302 | case I915_CACHE_WT: | |
c51e9701 | 303 | pte |= HSW_WT_ELLC_LLC_AGE3; |
651d794f CW |
304 | break; |
305 | default: | |
c51e9701 | 306 | pte |= HSW_WB_ELLC_LLC_AGE3; |
651d794f CW |
307 | break; |
308 | } | |
4d15c145 BW |
309 | |
310 | return pte; | |
311 | } | |
312 | ||
c114f76a MK |
313 | static int __setup_page_dma(struct drm_device *dev, |
314 | struct i915_page_dma *p, gfp_t flags) | |
678d96fb BW |
315 | { |
316 | struct device *device = &dev->pdev->dev; | |
317 | ||
c114f76a | 318 | p->page = alloc_page(flags); |
44159ddb MK |
319 | if (!p->page) |
320 | return -ENOMEM; | |
678d96fb | 321 | |
44159ddb MK |
322 | p->daddr = dma_map_page(device, |
323 | p->page, 0, 4096, PCI_DMA_BIDIRECTIONAL); | |
678d96fb | 324 | |
44159ddb MK |
325 | if (dma_mapping_error(device, p->daddr)) { |
326 | __free_page(p->page); | |
327 | return -EINVAL; | |
328 | } | |
1266cdb1 MT |
329 | |
330 | return 0; | |
678d96fb BW |
331 | } |
332 | ||
c114f76a MK |
333 | static int setup_page_dma(struct drm_device *dev, struct i915_page_dma *p) |
334 | { | |
335 | return __setup_page_dma(dev, p, GFP_KERNEL); | |
336 | } | |
337 | ||
44159ddb | 338 | static void cleanup_page_dma(struct drm_device *dev, struct i915_page_dma *p) |
06fda602 | 339 | { |
44159ddb | 340 | if (WARN_ON(!p->page)) |
06fda602 | 341 | return; |
678d96fb | 342 | |
44159ddb MK |
343 | dma_unmap_page(&dev->pdev->dev, p->daddr, 4096, PCI_DMA_BIDIRECTIONAL); |
344 | __free_page(p->page); | |
345 | memset(p, 0, sizeof(*p)); | |
346 | } | |
347 | ||
d1c54acd | 348 | static void *kmap_page_dma(struct i915_page_dma *p) |
73eeea53 | 349 | { |
d1c54acd MK |
350 | return kmap_atomic(p->page); |
351 | } | |
73eeea53 | 352 | |
d1c54acd MK |
353 | /* We use the flushing unmap only with ppgtt structures: |
354 | * page directories, page tables and scratch pages. | |
355 | */ | |
356 | static void kunmap_page_dma(struct drm_device *dev, void *vaddr) | |
357 | { | |
73eeea53 MK |
358 | /* There are only few exceptions for gen >=6. chv and bxt. |
359 | * And we are not sure about the latter so play safe for now. | |
360 | */ | |
361 | if (IS_CHERRYVIEW(dev) || IS_BROXTON(dev)) | |
362 | drm_clflush_virt_range(vaddr, PAGE_SIZE); | |
363 | ||
364 | kunmap_atomic(vaddr); | |
365 | } | |
366 | ||
567047be | 367 | #define kmap_px(px) kmap_page_dma(px_base(px)) |
d1c54acd MK |
368 | #define kunmap_px(ppgtt, vaddr) kunmap_page_dma((ppgtt)->base.dev, (vaddr)) |
369 | ||
567047be MK |
370 | #define setup_px(dev, px) setup_page_dma((dev), px_base(px)) |
371 | #define cleanup_px(dev, px) cleanup_page_dma((dev), px_base(px)) | |
372 | #define fill_px(dev, px, v) fill_page_dma((dev), px_base(px), (v)) | |
373 | #define fill32_px(dev, px, v) fill_page_dma_32((dev), px_base(px), (v)) | |
374 | ||
d1c54acd MK |
375 | static void fill_page_dma(struct drm_device *dev, struct i915_page_dma *p, |
376 | const uint64_t val) | |
377 | { | |
378 | int i; | |
379 | uint64_t * const vaddr = kmap_page_dma(p); | |
380 | ||
381 | for (i = 0; i < 512; i++) | |
382 | vaddr[i] = val; | |
383 | ||
384 | kunmap_page_dma(dev, vaddr); | |
385 | } | |
386 | ||
73eeea53 MK |
387 | static void fill_page_dma_32(struct drm_device *dev, struct i915_page_dma *p, |
388 | const uint32_t val32) | |
389 | { | |
390 | uint64_t v = val32; | |
391 | ||
392 | v = v << 32 | val32; | |
393 | ||
394 | fill_page_dma(dev, p, v); | |
395 | } | |
396 | ||
4ad2af1e MK |
397 | static struct i915_page_scratch *alloc_scratch_page(struct drm_device *dev) |
398 | { | |
399 | struct i915_page_scratch *sp; | |
400 | int ret; | |
401 | ||
402 | sp = kzalloc(sizeof(*sp), GFP_KERNEL); | |
403 | if (sp == NULL) | |
404 | return ERR_PTR(-ENOMEM); | |
405 | ||
406 | ret = __setup_page_dma(dev, px_base(sp), GFP_DMA32 | __GFP_ZERO); | |
407 | if (ret) { | |
408 | kfree(sp); | |
409 | return ERR_PTR(ret); | |
410 | } | |
411 | ||
412 | set_pages_uc(px_page(sp), 1); | |
413 | ||
414 | return sp; | |
415 | } | |
416 | ||
417 | static void free_scratch_page(struct drm_device *dev, | |
418 | struct i915_page_scratch *sp) | |
419 | { | |
420 | set_pages_wb(px_page(sp), 1); | |
421 | ||
422 | cleanup_px(dev, sp); | |
423 | kfree(sp); | |
424 | } | |
425 | ||
8a1ebd74 | 426 | static struct i915_page_table *alloc_pt(struct drm_device *dev) |
06fda602 | 427 | { |
ec565b3c | 428 | struct i915_page_table *pt; |
678d96fb BW |
429 | const size_t count = INTEL_INFO(dev)->gen >= 8 ? |
430 | GEN8_PTES : GEN6_PTES; | |
431 | int ret = -ENOMEM; | |
06fda602 BW |
432 | |
433 | pt = kzalloc(sizeof(*pt), GFP_KERNEL); | |
434 | if (!pt) | |
435 | return ERR_PTR(-ENOMEM); | |
436 | ||
678d96fb BW |
437 | pt->used_ptes = kcalloc(BITS_TO_LONGS(count), sizeof(*pt->used_ptes), |
438 | GFP_KERNEL); | |
439 | ||
440 | if (!pt->used_ptes) | |
441 | goto fail_bitmap; | |
442 | ||
567047be | 443 | ret = setup_px(dev, pt); |
678d96fb | 444 | if (ret) |
44159ddb | 445 | goto fail_page_m; |
06fda602 BW |
446 | |
447 | return pt; | |
678d96fb | 448 | |
44159ddb | 449 | fail_page_m: |
678d96fb BW |
450 | kfree(pt->used_ptes); |
451 | fail_bitmap: | |
452 | kfree(pt); | |
453 | ||
454 | return ERR_PTR(ret); | |
06fda602 BW |
455 | } |
456 | ||
2e906bea | 457 | static void free_pt(struct drm_device *dev, struct i915_page_table *pt) |
06fda602 | 458 | { |
2e906bea MK |
459 | cleanup_px(dev, pt); |
460 | kfree(pt->used_ptes); | |
461 | kfree(pt); | |
462 | } | |
463 | ||
464 | static void gen8_initialize_pt(struct i915_address_space *vm, | |
465 | struct i915_page_table *pt) | |
466 | { | |
467 | gen8_pte_t scratch_pte; | |
468 | ||
469 | scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page), | |
470 | I915_CACHE_LLC, true); | |
471 | ||
472 | fill_px(vm->dev, pt, scratch_pte); | |
473 | } | |
474 | ||
475 | static void gen6_initialize_pt(struct i915_address_space *vm, | |
476 | struct i915_page_table *pt) | |
477 | { | |
478 | gen6_pte_t scratch_pte; | |
479 | ||
480 | WARN_ON(px_dma(vm->scratch_page) == 0); | |
481 | ||
482 | scratch_pte = vm->pte_encode(px_dma(vm->scratch_page), | |
483 | I915_CACHE_LLC, true, 0); | |
484 | ||
485 | fill32_px(vm->dev, pt, scratch_pte); | |
06fda602 BW |
486 | } |
487 | ||
8a1ebd74 | 488 | static struct i915_page_directory *alloc_pd(struct drm_device *dev) |
06fda602 | 489 | { |
ec565b3c | 490 | struct i915_page_directory *pd; |
33c8819f | 491 | int ret = -ENOMEM; |
06fda602 BW |
492 | |
493 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); | |
494 | if (!pd) | |
495 | return ERR_PTR(-ENOMEM); | |
496 | ||
33c8819f MT |
497 | pd->used_pdes = kcalloc(BITS_TO_LONGS(I915_PDES), |
498 | sizeof(*pd->used_pdes), GFP_KERNEL); | |
499 | if (!pd->used_pdes) | |
a08e111a | 500 | goto fail_bitmap; |
33c8819f | 501 | |
567047be | 502 | ret = setup_px(dev, pd); |
33c8819f | 503 | if (ret) |
a08e111a | 504 | goto fail_page_m; |
e5815a2e | 505 | |
06fda602 | 506 | return pd; |
33c8819f | 507 | |
a08e111a | 508 | fail_page_m: |
33c8819f | 509 | kfree(pd->used_pdes); |
a08e111a | 510 | fail_bitmap: |
33c8819f MT |
511 | kfree(pd); |
512 | ||
513 | return ERR_PTR(ret); | |
06fda602 BW |
514 | } |
515 | ||
2e906bea MK |
516 | static void free_pd(struct drm_device *dev, struct i915_page_directory *pd) |
517 | { | |
518 | if (px_page(pd)) { | |
519 | cleanup_px(dev, pd); | |
520 | kfree(pd->used_pdes); | |
521 | kfree(pd); | |
522 | } | |
523 | } | |
524 | ||
525 | static void gen8_initialize_pd(struct i915_address_space *vm, | |
526 | struct i915_page_directory *pd) | |
527 | { | |
528 | gen8_pde_t scratch_pde; | |
529 | ||
530 | scratch_pde = gen8_pde_encode(px_dma(vm->scratch_pt), I915_CACHE_LLC); | |
531 | ||
532 | fill_px(vm->dev, pd, scratch_pde); | |
533 | } | |
534 | ||
6ac18502 MT |
535 | static int __pdp_init(struct drm_device *dev, |
536 | struct i915_page_directory_pointer *pdp) | |
537 | { | |
538 | size_t pdpes = I915_PDPES_PER_PDP(dev); | |
539 | ||
540 | pdp->used_pdpes = kcalloc(BITS_TO_LONGS(pdpes), | |
541 | sizeof(unsigned long), | |
542 | GFP_KERNEL); | |
543 | if (!pdp->used_pdpes) | |
544 | return -ENOMEM; | |
545 | ||
546 | pdp->page_directory = kcalloc(pdpes, sizeof(*pdp->page_directory), | |
547 | GFP_KERNEL); | |
548 | if (!pdp->page_directory) { | |
549 | kfree(pdp->used_pdpes); | |
550 | /* the PDP might be the statically allocated top level. Keep it | |
551 | * as clean as possible */ | |
552 | pdp->used_pdpes = NULL; | |
553 | return -ENOMEM; | |
554 | } | |
555 | ||
556 | return 0; | |
557 | } | |
558 | ||
559 | static void __pdp_fini(struct i915_page_directory_pointer *pdp) | |
560 | { | |
561 | kfree(pdp->used_pdpes); | |
562 | kfree(pdp->page_directory); | |
563 | pdp->page_directory = NULL; | |
564 | } | |
565 | ||
762d9936 MT |
566 | static struct |
567 | i915_page_directory_pointer *alloc_pdp(struct drm_device *dev) | |
568 | { | |
569 | struct i915_page_directory_pointer *pdp; | |
570 | int ret = -ENOMEM; | |
571 | ||
572 | WARN_ON(!USES_FULL_48BIT_PPGTT(dev)); | |
573 | ||
574 | pdp = kzalloc(sizeof(*pdp), GFP_KERNEL); | |
575 | if (!pdp) | |
576 | return ERR_PTR(-ENOMEM); | |
577 | ||
578 | ret = __pdp_init(dev, pdp); | |
579 | if (ret) | |
580 | goto fail_bitmap; | |
581 | ||
582 | ret = setup_px(dev, pdp); | |
583 | if (ret) | |
584 | goto fail_page_m; | |
585 | ||
586 | return pdp; | |
587 | ||
588 | fail_page_m: | |
589 | __pdp_fini(pdp); | |
590 | fail_bitmap: | |
591 | kfree(pdp); | |
592 | ||
593 | return ERR_PTR(ret); | |
594 | } | |
595 | ||
6ac18502 MT |
596 | static void free_pdp(struct drm_device *dev, |
597 | struct i915_page_directory_pointer *pdp) | |
598 | { | |
599 | __pdp_fini(pdp); | |
762d9936 MT |
600 | if (USES_FULL_48BIT_PPGTT(dev)) { |
601 | cleanup_px(dev, pdp); | |
602 | kfree(pdp); | |
603 | } | |
604 | } | |
605 | ||
69ab76fd MT |
606 | static void gen8_initialize_pdp(struct i915_address_space *vm, |
607 | struct i915_page_directory_pointer *pdp) | |
608 | { | |
609 | gen8_ppgtt_pdpe_t scratch_pdpe; | |
610 | ||
611 | scratch_pdpe = gen8_pdpe_encode(px_dma(vm->scratch_pd), I915_CACHE_LLC); | |
612 | ||
613 | fill_px(vm->dev, pdp, scratch_pdpe); | |
614 | } | |
615 | ||
616 | static void gen8_initialize_pml4(struct i915_address_space *vm, | |
617 | struct i915_pml4 *pml4) | |
618 | { | |
619 | gen8_ppgtt_pml4e_t scratch_pml4e; | |
620 | ||
621 | scratch_pml4e = gen8_pml4e_encode(px_dma(vm->scratch_pdp), | |
622 | I915_CACHE_LLC); | |
623 | ||
624 | fill_px(vm->dev, pml4, scratch_pml4e); | |
625 | } | |
626 | ||
762d9936 MT |
627 | static void |
628 | gen8_setup_page_directory(struct i915_hw_ppgtt *ppgtt, | |
629 | struct i915_page_directory_pointer *pdp, | |
630 | struct i915_page_directory *pd, | |
631 | int index) | |
632 | { | |
633 | gen8_ppgtt_pdpe_t *page_directorypo; | |
634 | ||
635 | if (!USES_FULL_48BIT_PPGTT(ppgtt->base.dev)) | |
636 | return; | |
637 | ||
638 | page_directorypo = kmap_px(pdp); | |
639 | page_directorypo[index] = gen8_pdpe_encode(px_dma(pd), I915_CACHE_LLC); | |
640 | kunmap_px(ppgtt, page_directorypo); | |
641 | } | |
642 | ||
643 | static void | |
644 | gen8_setup_page_directory_pointer(struct i915_hw_ppgtt *ppgtt, | |
645 | struct i915_pml4 *pml4, | |
646 | struct i915_page_directory_pointer *pdp, | |
647 | int index) | |
648 | { | |
649 | gen8_ppgtt_pml4e_t *pagemap = kmap_px(pml4); | |
650 | ||
651 | WARN_ON(!USES_FULL_48BIT_PPGTT(ppgtt->base.dev)); | |
652 | pagemap[index] = gen8_pml4e_encode(px_dma(pdp), I915_CACHE_LLC); | |
653 | kunmap_px(ppgtt, pagemap); | |
6ac18502 MT |
654 | } |
655 | ||
94e409c1 | 656 | /* Broadwell Page Directory Pointer Descriptors */ |
e85b26dc | 657 | static int gen8_write_pdp(struct drm_i915_gem_request *req, |
7cb6d7ac MT |
658 | unsigned entry, |
659 | dma_addr_t addr) | |
94e409c1 | 660 | { |
4a570db5 | 661 | struct intel_engine_cs *engine = req->engine; |
94e409c1 BW |
662 | int ret; |
663 | ||
664 | BUG_ON(entry >= 4); | |
665 | ||
5fb9de1a | 666 | ret = intel_ring_begin(req, 6); |
94e409c1 BW |
667 | if (ret) |
668 | return ret; | |
669 | ||
e2f80391 TU |
670 | intel_ring_emit(engine, MI_LOAD_REGISTER_IMM(1)); |
671 | intel_ring_emit_reg(engine, GEN8_RING_PDP_UDW(engine, entry)); | |
672 | intel_ring_emit(engine, upper_32_bits(addr)); | |
673 | intel_ring_emit(engine, MI_LOAD_REGISTER_IMM(1)); | |
674 | intel_ring_emit_reg(engine, GEN8_RING_PDP_LDW(engine, entry)); | |
675 | intel_ring_emit(engine, lower_32_bits(addr)); | |
676 | intel_ring_advance(engine); | |
94e409c1 BW |
677 | |
678 | return 0; | |
679 | } | |
680 | ||
2dba3239 MT |
681 | static int gen8_legacy_mm_switch(struct i915_hw_ppgtt *ppgtt, |
682 | struct drm_i915_gem_request *req) | |
94e409c1 | 683 | { |
eeb9488e | 684 | int i, ret; |
94e409c1 | 685 | |
7cb6d7ac | 686 | for (i = GEN8_LEGACY_PDPES - 1; i >= 0; i--) { |
d852c7bf MK |
687 | const dma_addr_t pd_daddr = i915_page_dir_dma_addr(ppgtt, i); |
688 | ||
e85b26dc | 689 | ret = gen8_write_pdp(req, i, pd_daddr); |
eeb9488e BW |
690 | if (ret) |
691 | return ret; | |
94e409c1 | 692 | } |
d595bd4b | 693 | |
eeb9488e | 694 | return 0; |
94e409c1 BW |
695 | } |
696 | ||
2dba3239 MT |
697 | static int gen8_48b_mm_switch(struct i915_hw_ppgtt *ppgtt, |
698 | struct drm_i915_gem_request *req) | |
699 | { | |
700 | return gen8_write_pdp(req, 0, px_dma(&ppgtt->pml4)); | |
701 | } | |
702 | ||
f9b5b782 MT |
703 | static void gen8_ppgtt_clear_pte_range(struct i915_address_space *vm, |
704 | struct i915_page_directory_pointer *pdp, | |
705 | uint64_t start, | |
706 | uint64_t length, | |
707 | gen8_pte_t scratch_pte) | |
459108b8 | 708 | { |
e5716f55 | 709 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
f9b5b782 | 710 | gen8_pte_t *pt_vaddr; |
de5ba8eb MT |
711 | unsigned pdpe = gen8_pdpe_index(start); |
712 | unsigned pde = gen8_pde_index(start); | |
713 | unsigned pte = gen8_pte_index(start); | |
782f1495 | 714 | unsigned num_entries = length >> PAGE_SHIFT; |
459108b8 BW |
715 | unsigned last_pte, i; |
716 | ||
f9b5b782 MT |
717 | if (WARN_ON(!pdp)) |
718 | return; | |
459108b8 BW |
719 | |
720 | while (num_entries) { | |
ec565b3c MT |
721 | struct i915_page_directory *pd; |
722 | struct i915_page_table *pt; | |
06fda602 | 723 | |
d4ec9da0 | 724 | if (WARN_ON(!pdp->page_directory[pdpe])) |
00245266 | 725 | break; |
06fda602 | 726 | |
d4ec9da0 | 727 | pd = pdp->page_directory[pdpe]; |
06fda602 BW |
728 | |
729 | if (WARN_ON(!pd->page_table[pde])) | |
00245266 | 730 | break; |
06fda602 BW |
731 | |
732 | pt = pd->page_table[pde]; | |
733 | ||
567047be | 734 | if (WARN_ON(!px_page(pt))) |
00245266 | 735 | break; |
06fda602 | 736 | |
7ad47cf2 | 737 | last_pte = pte + num_entries; |
07749ef3 MT |
738 | if (last_pte > GEN8_PTES) |
739 | last_pte = GEN8_PTES; | |
459108b8 | 740 | |
d1c54acd | 741 | pt_vaddr = kmap_px(pt); |
459108b8 | 742 | |
7ad47cf2 | 743 | for (i = pte; i < last_pte; i++) { |
459108b8 | 744 | pt_vaddr[i] = scratch_pte; |
7ad47cf2 BW |
745 | num_entries--; |
746 | } | |
459108b8 | 747 | |
d1c54acd | 748 | kunmap_px(ppgtt, pt); |
459108b8 | 749 | |
7ad47cf2 | 750 | pte = 0; |
07749ef3 | 751 | if (++pde == I915_PDES) { |
de5ba8eb MT |
752 | if (++pdpe == I915_PDPES_PER_PDP(vm->dev)) |
753 | break; | |
7ad47cf2 BW |
754 | pde = 0; |
755 | } | |
459108b8 BW |
756 | } |
757 | } | |
758 | ||
f9b5b782 MT |
759 | static void gen8_ppgtt_clear_range(struct i915_address_space *vm, |
760 | uint64_t start, | |
761 | uint64_t length, | |
762 | bool use_scratch) | |
9df15b49 | 763 | { |
e5716f55 | 764 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
f9b5b782 MT |
765 | gen8_pte_t scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page), |
766 | I915_CACHE_LLC, use_scratch); | |
767 | ||
de5ba8eb MT |
768 | if (!USES_FULL_48BIT_PPGTT(vm->dev)) { |
769 | gen8_ppgtt_clear_pte_range(vm, &ppgtt->pdp, start, length, | |
770 | scratch_pte); | |
771 | } else { | |
e8ebd8e2 | 772 | uint64_t pml4e; |
de5ba8eb MT |
773 | struct i915_page_directory_pointer *pdp; |
774 | ||
e8ebd8e2 | 775 | gen8_for_each_pml4e(pdp, &ppgtt->pml4, start, length, pml4e) { |
de5ba8eb MT |
776 | gen8_ppgtt_clear_pte_range(vm, pdp, start, length, |
777 | scratch_pte); | |
778 | } | |
779 | } | |
f9b5b782 MT |
780 | } |
781 | ||
782 | static void | |
783 | gen8_ppgtt_insert_pte_entries(struct i915_address_space *vm, | |
784 | struct i915_page_directory_pointer *pdp, | |
3387d433 | 785 | struct sg_page_iter *sg_iter, |
f9b5b782 MT |
786 | uint64_t start, |
787 | enum i915_cache_level cache_level) | |
788 | { | |
e5716f55 | 789 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
07749ef3 | 790 | gen8_pte_t *pt_vaddr; |
de5ba8eb MT |
791 | unsigned pdpe = gen8_pdpe_index(start); |
792 | unsigned pde = gen8_pde_index(start); | |
793 | unsigned pte = gen8_pte_index(start); | |
9df15b49 | 794 | |
6f1cc993 | 795 | pt_vaddr = NULL; |
7ad47cf2 | 796 | |
3387d433 | 797 | while (__sg_page_iter_next(sg_iter)) { |
d7b3de91 | 798 | if (pt_vaddr == NULL) { |
d4ec9da0 | 799 | struct i915_page_directory *pd = pdp->page_directory[pdpe]; |
ec565b3c | 800 | struct i915_page_table *pt = pd->page_table[pde]; |
d1c54acd | 801 | pt_vaddr = kmap_px(pt); |
d7b3de91 | 802 | } |
9df15b49 | 803 | |
7ad47cf2 | 804 | pt_vaddr[pte] = |
3387d433 | 805 | gen8_pte_encode(sg_page_iter_dma_address(sg_iter), |
6f1cc993 | 806 | cache_level, true); |
07749ef3 | 807 | if (++pte == GEN8_PTES) { |
d1c54acd | 808 | kunmap_px(ppgtt, pt_vaddr); |
6f1cc993 | 809 | pt_vaddr = NULL; |
07749ef3 | 810 | if (++pde == I915_PDES) { |
de5ba8eb MT |
811 | if (++pdpe == I915_PDPES_PER_PDP(vm->dev)) |
812 | break; | |
7ad47cf2 BW |
813 | pde = 0; |
814 | } | |
815 | pte = 0; | |
9df15b49 BW |
816 | } |
817 | } | |
d1c54acd MK |
818 | |
819 | if (pt_vaddr) | |
820 | kunmap_px(ppgtt, pt_vaddr); | |
9df15b49 BW |
821 | } |
822 | ||
f9b5b782 MT |
823 | static void gen8_ppgtt_insert_entries(struct i915_address_space *vm, |
824 | struct sg_table *pages, | |
825 | uint64_t start, | |
826 | enum i915_cache_level cache_level, | |
827 | u32 unused) | |
828 | { | |
e5716f55 | 829 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
3387d433 | 830 | struct sg_page_iter sg_iter; |
f9b5b782 | 831 | |
3387d433 | 832 | __sg_page_iter_start(&sg_iter, pages->sgl, sg_nents(pages->sgl), 0); |
de5ba8eb MT |
833 | |
834 | if (!USES_FULL_48BIT_PPGTT(vm->dev)) { | |
835 | gen8_ppgtt_insert_pte_entries(vm, &ppgtt->pdp, &sg_iter, start, | |
836 | cache_level); | |
837 | } else { | |
838 | struct i915_page_directory_pointer *pdp; | |
e8ebd8e2 | 839 | uint64_t pml4e; |
de5ba8eb MT |
840 | uint64_t length = (uint64_t)pages->orig_nents << PAGE_SHIFT; |
841 | ||
e8ebd8e2 | 842 | gen8_for_each_pml4e(pdp, &ppgtt->pml4, start, length, pml4e) { |
de5ba8eb MT |
843 | gen8_ppgtt_insert_pte_entries(vm, pdp, &sg_iter, |
844 | start, cache_level); | |
845 | } | |
846 | } | |
f9b5b782 MT |
847 | } |
848 | ||
f37c0505 MT |
849 | static void gen8_free_page_tables(struct drm_device *dev, |
850 | struct i915_page_directory *pd) | |
7ad47cf2 BW |
851 | { |
852 | int i; | |
853 | ||
567047be | 854 | if (!px_page(pd)) |
7ad47cf2 BW |
855 | return; |
856 | ||
33c8819f | 857 | for_each_set_bit(i, pd->used_pdes, I915_PDES) { |
06fda602 BW |
858 | if (WARN_ON(!pd->page_table[i])) |
859 | continue; | |
7ad47cf2 | 860 | |
a08e111a | 861 | free_pt(dev, pd->page_table[i]); |
06fda602 BW |
862 | pd->page_table[i] = NULL; |
863 | } | |
d7b3de91 BW |
864 | } |
865 | ||
8776f02b MK |
866 | static int gen8_init_scratch(struct i915_address_space *vm) |
867 | { | |
868 | struct drm_device *dev = vm->dev; | |
869 | ||
870 | vm->scratch_page = alloc_scratch_page(dev); | |
871 | if (IS_ERR(vm->scratch_page)) | |
872 | return PTR_ERR(vm->scratch_page); | |
873 | ||
874 | vm->scratch_pt = alloc_pt(dev); | |
875 | if (IS_ERR(vm->scratch_pt)) { | |
876 | free_scratch_page(dev, vm->scratch_page); | |
877 | return PTR_ERR(vm->scratch_pt); | |
878 | } | |
879 | ||
880 | vm->scratch_pd = alloc_pd(dev); | |
881 | if (IS_ERR(vm->scratch_pd)) { | |
882 | free_pt(dev, vm->scratch_pt); | |
883 | free_scratch_page(dev, vm->scratch_page); | |
884 | return PTR_ERR(vm->scratch_pd); | |
885 | } | |
886 | ||
69ab76fd MT |
887 | if (USES_FULL_48BIT_PPGTT(dev)) { |
888 | vm->scratch_pdp = alloc_pdp(dev); | |
889 | if (IS_ERR(vm->scratch_pdp)) { | |
890 | free_pd(dev, vm->scratch_pd); | |
891 | free_pt(dev, vm->scratch_pt); | |
892 | free_scratch_page(dev, vm->scratch_page); | |
893 | return PTR_ERR(vm->scratch_pdp); | |
894 | } | |
895 | } | |
896 | ||
8776f02b MK |
897 | gen8_initialize_pt(vm, vm->scratch_pt); |
898 | gen8_initialize_pd(vm, vm->scratch_pd); | |
69ab76fd MT |
899 | if (USES_FULL_48BIT_PPGTT(dev)) |
900 | gen8_initialize_pdp(vm, vm->scratch_pdp); | |
8776f02b MK |
901 | |
902 | return 0; | |
903 | } | |
904 | ||
650da34c ZL |
905 | static int gen8_ppgtt_notify_vgt(struct i915_hw_ppgtt *ppgtt, bool create) |
906 | { | |
907 | enum vgt_g2v_type msg; | |
908 | struct drm_device *dev = ppgtt->base.dev; | |
909 | struct drm_i915_private *dev_priv = dev->dev_private; | |
650da34c ZL |
910 | int i; |
911 | ||
912 | if (USES_FULL_48BIT_PPGTT(dev)) { | |
913 | u64 daddr = px_dma(&ppgtt->pml4); | |
914 | ||
ab75bb5d VS |
915 | I915_WRITE(vgtif_reg(pdp[0].lo), lower_32_bits(daddr)); |
916 | I915_WRITE(vgtif_reg(pdp[0].hi), upper_32_bits(daddr)); | |
650da34c ZL |
917 | |
918 | msg = (create ? VGT_G2V_PPGTT_L4_PAGE_TABLE_CREATE : | |
919 | VGT_G2V_PPGTT_L4_PAGE_TABLE_DESTROY); | |
920 | } else { | |
921 | for (i = 0; i < GEN8_LEGACY_PDPES; i++) { | |
922 | u64 daddr = i915_page_dir_dma_addr(ppgtt, i); | |
923 | ||
ab75bb5d VS |
924 | I915_WRITE(vgtif_reg(pdp[i].lo), lower_32_bits(daddr)); |
925 | I915_WRITE(vgtif_reg(pdp[i].hi), upper_32_bits(daddr)); | |
650da34c ZL |
926 | } |
927 | ||
928 | msg = (create ? VGT_G2V_PPGTT_L3_PAGE_TABLE_CREATE : | |
929 | VGT_G2V_PPGTT_L3_PAGE_TABLE_DESTROY); | |
930 | } | |
931 | ||
932 | I915_WRITE(vgtif_reg(g2v_notify), msg); | |
933 | ||
934 | return 0; | |
935 | } | |
936 | ||
8776f02b MK |
937 | static void gen8_free_scratch(struct i915_address_space *vm) |
938 | { | |
939 | struct drm_device *dev = vm->dev; | |
940 | ||
69ab76fd MT |
941 | if (USES_FULL_48BIT_PPGTT(dev)) |
942 | free_pdp(dev, vm->scratch_pdp); | |
8776f02b MK |
943 | free_pd(dev, vm->scratch_pd); |
944 | free_pt(dev, vm->scratch_pt); | |
945 | free_scratch_page(dev, vm->scratch_page); | |
946 | } | |
947 | ||
762d9936 MT |
948 | static void gen8_ppgtt_cleanup_3lvl(struct drm_device *dev, |
949 | struct i915_page_directory_pointer *pdp) | |
b45a6715 BW |
950 | { |
951 | int i; | |
952 | ||
d4ec9da0 MT |
953 | for_each_set_bit(i, pdp->used_pdpes, I915_PDPES_PER_PDP(dev)) { |
954 | if (WARN_ON(!pdp->page_directory[i])) | |
06fda602 BW |
955 | continue; |
956 | ||
d4ec9da0 MT |
957 | gen8_free_page_tables(dev, pdp->page_directory[i]); |
958 | free_pd(dev, pdp->page_directory[i]); | |
7ad47cf2 | 959 | } |
69876bed | 960 | |
d4ec9da0 | 961 | free_pdp(dev, pdp); |
762d9936 MT |
962 | } |
963 | ||
964 | static void gen8_ppgtt_cleanup_4lvl(struct i915_hw_ppgtt *ppgtt) | |
965 | { | |
966 | int i; | |
967 | ||
968 | for_each_set_bit(i, ppgtt->pml4.used_pml4es, GEN8_PML4ES_PER_PML4) { | |
969 | if (WARN_ON(!ppgtt->pml4.pdps[i])) | |
970 | continue; | |
971 | ||
972 | gen8_ppgtt_cleanup_3lvl(ppgtt->base.dev, ppgtt->pml4.pdps[i]); | |
973 | } | |
974 | ||
975 | cleanup_px(ppgtt->base.dev, &ppgtt->pml4); | |
976 | } | |
977 | ||
978 | static void gen8_ppgtt_cleanup(struct i915_address_space *vm) | |
979 | { | |
e5716f55 | 980 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
762d9936 | 981 | |
650da34c ZL |
982 | if (intel_vgpu_active(vm->dev)) |
983 | gen8_ppgtt_notify_vgt(ppgtt, false); | |
984 | ||
762d9936 MT |
985 | if (!USES_FULL_48BIT_PPGTT(ppgtt->base.dev)) |
986 | gen8_ppgtt_cleanup_3lvl(ppgtt->base.dev, &ppgtt->pdp); | |
987 | else | |
988 | gen8_ppgtt_cleanup_4lvl(ppgtt); | |
d4ec9da0 | 989 | |
8776f02b | 990 | gen8_free_scratch(vm); |
b45a6715 BW |
991 | } |
992 | ||
d7b2633d MT |
993 | /** |
994 | * gen8_ppgtt_alloc_pagetabs() - Allocate page tables for VA range. | |
d4ec9da0 MT |
995 | * @vm: Master vm structure. |
996 | * @pd: Page directory for this address range. | |
d7b2633d | 997 | * @start: Starting virtual address to begin allocations. |
d4ec9da0 | 998 | * @length: Size of the allocations. |
d7b2633d MT |
999 | * @new_pts: Bitmap set by function with new allocations. Likely used by the |
1000 | * caller to free on error. | |
1001 | * | |
1002 | * Allocate the required number of page tables. Extremely similar to | |
1003 | * gen8_ppgtt_alloc_page_directories(). The main difference is here we are limited by | |
1004 | * the page directory boundary (instead of the page directory pointer). That | |
1005 | * boundary is 1GB virtual. Therefore, unlike gen8_ppgtt_alloc_page_directories(), it is | |
1006 | * possible, and likely that the caller will need to use multiple calls of this | |
1007 | * function to achieve the appropriate allocation. | |
1008 | * | |
1009 | * Return: 0 if success; negative error code otherwise. | |
1010 | */ | |
d4ec9da0 | 1011 | static int gen8_ppgtt_alloc_pagetabs(struct i915_address_space *vm, |
e5815a2e | 1012 | struct i915_page_directory *pd, |
5441f0cb | 1013 | uint64_t start, |
d7b2633d MT |
1014 | uint64_t length, |
1015 | unsigned long *new_pts) | |
bf2b4ed2 | 1016 | { |
d4ec9da0 | 1017 | struct drm_device *dev = vm->dev; |
d7b2633d | 1018 | struct i915_page_table *pt; |
5441f0cb | 1019 | uint32_t pde; |
bf2b4ed2 | 1020 | |
e8ebd8e2 | 1021 | gen8_for_each_pde(pt, pd, start, length, pde) { |
d7b2633d | 1022 | /* Don't reallocate page tables */ |
6ac18502 | 1023 | if (test_bit(pde, pd->used_pdes)) { |
d7b2633d | 1024 | /* Scratch is never allocated this way */ |
d4ec9da0 | 1025 | WARN_ON(pt == vm->scratch_pt); |
d7b2633d MT |
1026 | continue; |
1027 | } | |
1028 | ||
8a1ebd74 | 1029 | pt = alloc_pt(dev); |
d7b2633d | 1030 | if (IS_ERR(pt)) |
5441f0cb MT |
1031 | goto unwind_out; |
1032 | ||
d4ec9da0 | 1033 | gen8_initialize_pt(vm, pt); |
d7b2633d | 1034 | pd->page_table[pde] = pt; |
966082c9 | 1035 | __set_bit(pde, new_pts); |
4c06ec8d | 1036 | trace_i915_page_table_entry_alloc(vm, pde, start, GEN8_PDE_SHIFT); |
7ad47cf2 BW |
1037 | } |
1038 | ||
bf2b4ed2 | 1039 | return 0; |
7ad47cf2 BW |
1040 | |
1041 | unwind_out: | |
d7b2633d | 1042 | for_each_set_bit(pde, new_pts, I915_PDES) |
a08e111a | 1043 | free_pt(dev, pd->page_table[pde]); |
7ad47cf2 | 1044 | |
d7b3de91 | 1045 | return -ENOMEM; |
bf2b4ed2 BW |
1046 | } |
1047 | ||
d7b2633d MT |
1048 | /** |
1049 | * gen8_ppgtt_alloc_page_directories() - Allocate page directories for VA range. | |
d4ec9da0 | 1050 | * @vm: Master vm structure. |
d7b2633d MT |
1051 | * @pdp: Page directory pointer for this address range. |
1052 | * @start: Starting virtual address to begin allocations. | |
d4ec9da0 MT |
1053 | * @length: Size of the allocations. |
1054 | * @new_pds: Bitmap set by function with new allocations. Likely used by the | |
d7b2633d MT |
1055 | * caller to free on error. |
1056 | * | |
1057 | * Allocate the required number of page directories starting at the pde index of | |
1058 | * @start, and ending at the pde index @start + @length. This function will skip | |
1059 | * over already allocated page directories within the range, and only allocate | |
1060 | * new ones, setting the appropriate pointer within the pdp as well as the | |
1061 | * correct position in the bitmap @new_pds. | |
1062 | * | |
1063 | * The function will only allocate the pages within the range for a give page | |
1064 | * directory pointer. In other words, if @start + @length straddles a virtually | |
1065 | * addressed PDP boundary (512GB for 4k pages), there will be more allocations | |
1066 | * required by the caller, This is not currently possible, and the BUG in the | |
1067 | * code will prevent it. | |
1068 | * | |
1069 | * Return: 0 if success; negative error code otherwise. | |
1070 | */ | |
d4ec9da0 MT |
1071 | static int |
1072 | gen8_ppgtt_alloc_page_directories(struct i915_address_space *vm, | |
1073 | struct i915_page_directory_pointer *pdp, | |
1074 | uint64_t start, | |
1075 | uint64_t length, | |
1076 | unsigned long *new_pds) | |
bf2b4ed2 | 1077 | { |
d4ec9da0 | 1078 | struct drm_device *dev = vm->dev; |
d7b2633d | 1079 | struct i915_page_directory *pd; |
69876bed | 1080 | uint32_t pdpe; |
6ac18502 | 1081 | uint32_t pdpes = I915_PDPES_PER_PDP(dev); |
69876bed | 1082 | |
6ac18502 | 1083 | WARN_ON(!bitmap_empty(new_pds, pdpes)); |
d7b2633d | 1084 | |
e8ebd8e2 | 1085 | gen8_for_each_pdpe(pd, pdp, start, length, pdpe) { |
6ac18502 | 1086 | if (test_bit(pdpe, pdp->used_pdpes)) |
d7b2633d | 1087 | continue; |
33c8819f | 1088 | |
8a1ebd74 | 1089 | pd = alloc_pd(dev); |
d7b2633d | 1090 | if (IS_ERR(pd)) |
d7b3de91 | 1091 | goto unwind_out; |
69876bed | 1092 | |
d4ec9da0 | 1093 | gen8_initialize_pd(vm, pd); |
d7b2633d | 1094 | pdp->page_directory[pdpe] = pd; |
966082c9 | 1095 | __set_bit(pdpe, new_pds); |
4c06ec8d | 1096 | trace_i915_page_directory_entry_alloc(vm, pdpe, start, GEN8_PDPE_SHIFT); |
d7b3de91 BW |
1097 | } |
1098 | ||
bf2b4ed2 | 1099 | return 0; |
d7b3de91 BW |
1100 | |
1101 | unwind_out: | |
6ac18502 | 1102 | for_each_set_bit(pdpe, new_pds, pdpes) |
a08e111a | 1103 | free_pd(dev, pdp->page_directory[pdpe]); |
d7b3de91 BW |
1104 | |
1105 | return -ENOMEM; | |
bf2b4ed2 BW |
1106 | } |
1107 | ||
762d9936 MT |
1108 | /** |
1109 | * gen8_ppgtt_alloc_page_dirpointers() - Allocate pdps for VA range. | |
1110 | * @vm: Master vm structure. | |
1111 | * @pml4: Page map level 4 for this address range. | |
1112 | * @start: Starting virtual address to begin allocations. | |
1113 | * @length: Size of the allocations. | |
1114 | * @new_pdps: Bitmap set by function with new allocations. Likely used by the | |
1115 | * caller to free on error. | |
1116 | * | |
1117 | * Allocate the required number of page directory pointers. Extremely similar to | |
1118 | * gen8_ppgtt_alloc_page_directories() and gen8_ppgtt_alloc_pagetabs(). | |
1119 | * The main difference is here we are limited by the pml4 boundary (instead of | |
1120 | * the page directory pointer). | |
1121 | * | |
1122 | * Return: 0 if success; negative error code otherwise. | |
1123 | */ | |
1124 | static int | |
1125 | gen8_ppgtt_alloc_page_dirpointers(struct i915_address_space *vm, | |
1126 | struct i915_pml4 *pml4, | |
1127 | uint64_t start, | |
1128 | uint64_t length, | |
1129 | unsigned long *new_pdps) | |
1130 | { | |
1131 | struct drm_device *dev = vm->dev; | |
1132 | struct i915_page_directory_pointer *pdp; | |
762d9936 MT |
1133 | uint32_t pml4e; |
1134 | ||
1135 | WARN_ON(!bitmap_empty(new_pdps, GEN8_PML4ES_PER_PML4)); | |
1136 | ||
e8ebd8e2 | 1137 | gen8_for_each_pml4e(pdp, pml4, start, length, pml4e) { |
762d9936 MT |
1138 | if (!test_bit(pml4e, pml4->used_pml4es)) { |
1139 | pdp = alloc_pdp(dev); | |
1140 | if (IS_ERR(pdp)) | |
1141 | goto unwind_out; | |
1142 | ||
69ab76fd | 1143 | gen8_initialize_pdp(vm, pdp); |
762d9936 MT |
1144 | pml4->pdps[pml4e] = pdp; |
1145 | __set_bit(pml4e, new_pdps); | |
1146 | trace_i915_page_directory_pointer_entry_alloc(vm, | |
1147 | pml4e, | |
1148 | start, | |
1149 | GEN8_PML4E_SHIFT); | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | return 0; | |
1154 | ||
1155 | unwind_out: | |
1156 | for_each_set_bit(pml4e, new_pdps, GEN8_PML4ES_PER_PML4) | |
1157 | free_pdp(dev, pml4->pdps[pml4e]); | |
1158 | ||
1159 | return -ENOMEM; | |
1160 | } | |
1161 | ||
d7b2633d | 1162 | static void |
3a41a05d | 1163 | free_gen8_temp_bitmaps(unsigned long *new_pds, unsigned long *new_pts) |
d7b2633d | 1164 | { |
d7b2633d MT |
1165 | kfree(new_pts); |
1166 | kfree(new_pds); | |
1167 | } | |
1168 | ||
1169 | /* Fills in the page directory bitmap, and the array of page tables bitmap. Both | |
1170 | * of these are based on the number of PDPEs in the system. | |
1171 | */ | |
1172 | static | |
1173 | int __must_check alloc_gen8_temp_bitmaps(unsigned long **new_pds, | |
3a41a05d | 1174 | unsigned long **new_pts, |
6ac18502 | 1175 | uint32_t pdpes) |
d7b2633d | 1176 | { |
d7b2633d | 1177 | unsigned long *pds; |
3a41a05d | 1178 | unsigned long *pts; |
d7b2633d | 1179 | |
3a41a05d | 1180 | pds = kcalloc(BITS_TO_LONGS(pdpes), sizeof(unsigned long), GFP_TEMPORARY); |
d7b2633d MT |
1181 | if (!pds) |
1182 | return -ENOMEM; | |
1183 | ||
3a41a05d MW |
1184 | pts = kcalloc(pdpes, BITS_TO_LONGS(I915_PDES) * sizeof(unsigned long), |
1185 | GFP_TEMPORARY); | |
1186 | if (!pts) | |
1187 | goto err_out; | |
d7b2633d MT |
1188 | |
1189 | *new_pds = pds; | |
1190 | *new_pts = pts; | |
1191 | ||
1192 | return 0; | |
1193 | ||
1194 | err_out: | |
3a41a05d | 1195 | free_gen8_temp_bitmaps(pds, pts); |
d7b2633d MT |
1196 | return -ENOMEM; |
1197 | } | |
1198 | ||
5b7e4c9c MK |
1199 | /* PDE TLBs are a pain to invalidate on GEN8+. When we modify |
1200 | * the page table structures, we mark them dirty so that | |
1201 | * context switching/execlist queuing code takes extra steps | |
1202 | * to ensure that tlbs are flushed. | |
1203 | */ | |
1204 | static void mark_tlbs_dirty(struct i915_hw_ppgtt *ppgtt) | |
1205 | { | |
1206 | ppgtt->pd_dirty_rings = INTEL_INFO(ppgtt->base.dev)->ring_mask; | |
1207 | } | |
1208 | ||
762d9936 MT |
1209 | static int gen8_alloc_va_range_3lvl(struct i915_address_space *vm, |
1210 | struct i915_page_directory_pointer *pdp, | |
1211 | uint64_t start, | |
1212 | uint64_t length) | |
bf2b4ed2 | 1213 | { |
e5716f55 | 1214 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
3a41a05d | 1215 | unsigned long *new_page_dirs, *new_page_tables; |
d4ec9da0 | 1216 | struct drm_device *dev = vm->dev; |
5441f0cb | 1217 | struct i915_page_directory *pd; |
33c8819f MT |
1218 | const uint64_t orig_start = start; |
1219 | const uint64_t orig_length = length; | |
5441f0cb | 1220 | uint32_t pdpe; |
d4ec9da0 | 1221 | uint32_t pdpes = I915_PDPES_PER_PDP(dev); |
bf2b4ed2 BW |
1222 | int ret; |
1223 | ||
d7b2633d MT |
1224 | /* Wrap is never okay since we can only represent 48b, and we don't |
1225 | * actually use the other side of the canonical address space. | |
1226 | */ | |
1227 | if (WARN_ON(start + length < start)) | |
a05d80ee MK |
1228 | return -ENODEV; |
1229 | ||
d4ec9da0 | 1230 | if (WARN_ON(start + length > vm->total)) |
a05d80ee | 1231 | return -ENODEV; |
d7b2633d | 1232 | |
6ac18502 | 1233 | ret = alloc_gen8_temp_bitmaps(&new_page_dirs, &new_page_tables, pdpes); |
bf2b4ed2 BW |
1234 | if (ret) |
1235 | return ret; | |
1236 | ||
d7b2633d | 1237 | /* Do the allocations first so we can easily bail out */ |
d4ec9da0 MT |
1238 | ret = gen8_ppgtt_alloc_page_directories(vm, pdp, start, length, |
1239 | new_page_dirs); | |
d7b2633d | 1240 | if (ret) { |
3a41a05d | 1241 | free_gen8_temp_bitmaps(new_page_dirs, new_page_tables); |
d7b2633d MT |
1242 | return ret; |
1243 | } | |
1244 | ||
1245 | /* For every page directory referenced, allocate page tables */ | |
e8ebd8e2 | 1246 | gen8_for_each_pdpe(pd, pdp, start, length, pdpe) { |
d4ec9da0 | 1247 | ret = gen8_ppgtt_alloc_pagetabs(vm, pd, start, length, |
3a41a05d | 1248 | new_page_tables + pdpe * BITS_TO_LONGS(I915_PDES)); |
5441f0cb MT |
1249 | if (ret) |
1250 | goto err_out; | |
5441f0cb MT |
1251 | } |
1252 | ||
33c8819f MT |
1253 | start = orig_start; |
1254 | length = orig_length; | |
1255 | ||
d7b2633d MT |
1256 | /* Allocations have completed successfully, so set the bitmaps, and do |
1257 | * the mappings. */ | |
e8ebd8e2 | 1258 | gen8_for_each_pdpe(pd, pdp, start, length, pdpe) { |
d1c54acd | 1259 | gen8_pde_t *const page_directory = kmap_px(pd); |
33c8819f | 1260 | struct i915_page_table *pt; |
09120d4e | 1261 | uint64_t pd_len = length; |
33c8819f MT |
1262 | uint64_t pd_start = start; |
1263 | uint32_t pde; | |
1264 | ||
d7b2633d MT |
1265 | /* Every pd should be allocated, we just did that above. */ |
1266 | WARN_ON(!pd); | |
1267 | ||
e8ebd8e2 | 1268 | gen8_for_each_pde(pt, pd, pd_start, pd_len, pde) { |
d7b2633d MT |
1269 | /* Same reasoning as pd */ |
1270 | WARN_ON(!pt); | |
1271 | WARN_ON(!pd_len); | |
1272 | WARN_ON(!gen8_pte_count(pd_start, pd_len)); | |
1273 | ||
1274 | /* Set our used ptes within the page table */ | |
1275 | bitmap_set(pt->used_ptes, | |
1276 | gen8_pte_index(pd_start), | |
1277 | gen8_pte_count(pd_start, pd_len)); | |
1278 | ||
1279 | /* Our pde is now pointing to the pagetable, pt */ | |
966082c9 | 1280 | __set_bit(pde, pd->used_pdes); |
d7b2633d MT |
1281 | |
1282 | /* Map the PDE to the page table */ | |
fe36f55d MK |
1283 | page_directory[pde] = gen8_pde_encode(px_dma(pt), |
1284 | I915_CACHE_LLC); | |
4c06ec8d MT |
1285 | trace_i915_page_table_entry_map(&ppgtt->base, pde, pt, |
1286 | gen8_pte_index(start), | |
1287 | gen8_pte_count(start, length), | |
1288 | GEN8_PTES); | |
d7b2633d MT |
1289 | |
1290 | /* NB: We haven't yet mapped ptes to pages. At this | |
1291 | * point we're still relying on insert_entries() */ | |
33c8819f | 1292 | } |
d7b2633d | 1293 | |
d1c54acd | 1294 | kunmap_px(ppgtt, page_directory); |
d4ec9da0 | 1295 | __set_bit(pdpe, pdp->used_pdpes); |
762d9936 | 1296 | gen8_setup_page_directory(ppgtt, pdp, pd, pdpe); |
33c8819f MT |
1297 | } |
1298 | ||
3a41a05d | 1299 | free_gen8_temp_bitmaps(new_page_dirs, new_page_tables); |
5b7e4c9c | 1300 | mark_tlbs_dirty(ppgtt); |
d7b3de91 | 1301 | return 0; |
bf2b4ed2 | 1302 | |
d7b3de91 | 1303 | err_out: |
d7b2633d | 1304 | while (pdpe--) { |
e8ebd8e2 DG |
1305 | unsigned long temp; |
1306 | ||
3a41a05d MW |
1307 | for_each_set_bit(temp, new_page_tables + pdpe * |
1308 | BITS_TO_LONGS(I915_PDES), I915_PDES) | |
d4ec9da0 | 1309 | free_pt(dev, pdp->page_directory[pdpe]->page_table[temp]); |
d7b2633d MT |
1310 | } |
1311 | ||
6ac18502 | 1312 | for_each_set_bit(pdpe, new_page_dirs, pdpes) |
d4ec9da0 | 1313 | free_pd(dev, pdp->page_directory[pdpe]); |
d7b2633d | 1314 | |
3a41a05d | 1315 | free_gen8_temp_bitmaps(new_page_dirs, new_page_tables); |
5b7e4c9c | 1316 | mark_tlbs_dirty(ppgtt); |
bf2b4ed2 BW |
1317 | return ret; |
1318 | } | |
1319 | ||
762d9936 MT |
1320 | static int gen8_alloc_va_range_4lvl(struct i915_address_space *vm, |
1321 | struct i915_pml4 *pml4, | |
1322 | uint64_t start, | |
1323 | uint64_t length) | |
1324 | { | |
1325 | DECLARE_BITMAP(new_pdps, GEN8_PML4ES_PER_PML4); | |
e5716f55 | 1326 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
762d9936 | 1327 | struct i915_page_directory_pointer *pdp; |
e8ebd8e2 | 1328 | uint64_t pml4e; |
762d9936 MT |
1329 | int ret = 0; |
1330 | ||
1331 | /* Do the pml4 allocations first, so we don't need to track the newly | |
1332 | * allocated tables below the pdp */ | |
1333 | bitmap_zero(new_pdps, GEN8_PML4ES_PER_PML4); | |
1334 | ||
1335 | /* The pagedirectory and pagetable allocations are done in the shared 3 | |
1336 | * and 4 level code. Just allocate the pdps. | |
1337 | */ | |
1338 | ret = gen8_ppgtt_alloc_page_dirpointers(vm, pml4, start, length, | |
1339 | new_pdps); | |
1340 | if (ret) | |
1341 | return ret; | |
1342 | ||
1343 | WARN(bitmap_weight(new_pdps, GEN8_PML4ES_PER_PML4) > 2, | |
1344 | "The allocation has spanned more than 512GB. " | |
1345 | "It is highly likely this is incorrect."); | |
1346 | ||
e8ebd8e2 | 1347 | gen8_for_each_pml4e(pdp, pml4, start, length, pml4e) { |
762d9936 MT |
1348 | WARN_ON(!pdp); |
1349 | ||
1350 | ret = gen8_alloc_va_range_3lvl(vm, pdp, start, length); | |
1351 | if (ret) | |
1352 | goto err_out; | |
1353 | ||
1354 | gen8_setup_page_directory_pointer(ppgtt, pml4, pdp, pml4e); | |
1355 | } | |
1356 | ||
1357 | bitmap_or(pml4->used_pml4es, new_pdps, pml4->used_pml4es, | |
1358 | GEN8_PML4ES_PER_PML4); | |
1359 | ||
1360 | return 0; | |
1361 | ||
1362 | err_out: | |
1363 | for_each_set_bit(pml4e, new_pdps, GEN8_PML4ES_PER_PML4) | |
1364 | gen8_ppgtt_cleanup_3lvl(vm->dev, pml4->pdps[pml4e]); | |
1365 | ||
1366 | return ret; | |
1367 | } | |
1368 | ||
1369 | static int gen8_alloc_va_range(struct i915_address_space *vm, | |
1370 | uint64_t start, uint64_t length) | |
1371 | { | |
e5716f55 | 1372 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
762d9936 MT |
1373 | |
1374 | if (USES_FULL_48BIT_PPGTT(vm->dev)) | |
1375 | return gen8_alloc_va_range_4lvl(vm, &ppgtt->pml4, start, length); | |
1376 | else | |
1377 | return gen8_alloc_va_range_3lvl(vm, &ppgtt->pdp, start, length); | |
1378 | } | |
1379 | ||
ea91e401 MT |
1380 | static void gen8_dump_pdp(struct i915_page_directory_pointer *pdp, |
1381 | uint64_t start, uint64_t length, | |
1382 | gen8_pte_t scratch_pte, | |
1383 | struct seq_file *m) | |
1384 | { | |
1385 | struct i915_page_directory *pd; | |
ea91e401 MT |
1386 | uint32_t pdpe; |
1387 | ||
e8ebd8e2 | 1388 | gen8_for_each_pdpe(pd, pdp, start, length, pdpe) { |
ea91e401 MT |
1389 | struct i915_page_table *pt; |
1390 | uint64_t pd_len = length; | |
1391 | uint64_t pd_start = start; | |
1392 | uint32_t pde; | |
1393 | ||
1394 | if (!test_bit(pdpe, pdp->used_pdpes)) | |
1395 | continue; | |
1396 | ||
1397 | seq_printf(m, "\tPDPE #%d\n", pdpe); | |
e8ebd8e2 | 1398 | gen8_for_each_pde(pt, pd, pd_start, pd_len, pde) { |
ea91e401 MT |
1399 | uint32_t pte; |
1400 | gen8_pte_t *pt_vaddr; | |
1401 | ||
1402 | if (!test_bit(pde, pd->used_pdes)) | |
1403 | continue; | |
1404 | ||
1405 | pt_vaddr = kmap_px(pt); | |
1406 | for (pte = 0; pte < GEN8_PTES; pte += 4) { | |
1407 | uint64_t va = | |
1408 | (pdpe << GEN8_PDPE_SHIFT) | | |
1409 | (pde << GEN8_PDE_SHIFT) | | |
1410 | (pte << GEN8_PTE_SHIFT); | |
1411 | int i; | |
1412 | bool found = false; | |
1413 | ||
1414 | for (i = 0; i < 4; i++) | |
1415 | if (pt_vaddr[pte + i] != scratch_pte) | |
1416 | found = true; | |
1417 | if (!found) | |
1418 | continue; | |
1419 | ||
1420 | seq_printf(m, "\t\t0x%llx [%03d,%03d,%04d]: =", va, pdpe, pde, pte); | |
1421 | for (i = 0; i < 4; i++) { | |
1422 | if (pt_vaddr[pte + i] != scratch_pte) | |
1423 | seq_printf(m, " %llx", pt_vaddr[pte + i]); | |
1424 | else | |
1425 | seq_puts(m, " SCRATCH "); | |
1426 | } | |
1427 | seq_puts(m, "\n"); | |
1428 | } | |
1429 | /* don't use kunmap_px, it could trigger | |
1430 | * an unnecessary flush. | |
1431 | */ | |
1432 | kunmap_atomic(pt_vaddr); | |
1433 | } | |
1434 | } | |
1435 | } | |
1436 | ||
1437 | static void gen8_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m) | |
1438 | { | |
1439 | struct i915_address_space *vm = &ppgtt->base; | |
1440 | uint64_t start = ppgtt->base.start; | |
1441 | uint64_t length = ppgtt->base.total; | |
1442 | gen8_pte_t scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page), | |
1443 | I915_CACHE_LLC, true); | |
1444 | ||
1445 | if (!USES_FULL_48BIT_PPGTT(vm->dev)) { | |
1446 | gen8_dump_pdp(&ppgtt->pdp, start, length, scratch_pte, m); | |
1447 | } else { | |
e8ebd8e2 | 1448 | uint64_t pml4e; |
ea91e401 MT |
1449 | struct i915_pml4 *pml4 = &ppgtt->pml4; |
1450 | struct i915_page_directory_pointer *pdp; | |
1451 | ||
e8ebd8e2 | 1452 | gen8_for_each_pml4e(pdp, pml4, start, length, pml4e) { |
ea91e401 MT |
1453 | if (!test_bit(pml4e, pml4->used_pml4es)) |
1454 | continue; | |
1455 | ||
1456 | seq_printf(m, " PML4E #%llu\n", pml4e); | |
1457 | gen8_dump_pdp(pdp, start, length, scratch_pte, m); | |
1458 | } | |
1459 | } | |
1460 | } | |
1461 | ||
331f38e7 ZL |
1462 | static int gen8_preallocate_top_level_pdps(struct i915_hw_ppgtt *ppgtt) |
1463 | { | |
3a41a05d | 1464 | unsigned long *new_page_dirs, *new_page_tables; |
331f38e7 ZL |
1465 | uint32_t pdpes = I915_PDPES_PER_PDP(dev); |
1466 | int ret; | |
1467 | ||
1468 | /* We allocate temp bitmap for page tables for no gain | |
1469 | * but as this is for init only, lets keep the things simple | |
1470 | */ | |
1471 | ret = alloc_gen8_temp_bitmaps(&new_page_dirs, &new_page_tables, pdpes); | |
1472 | if (ret) | |
1473 | return ret; | |
1474 | ||
1475 | /* Allocate for all pdps regardless of how the ppgtt | |
1476 | * was defined. | |
1477 | */ | |
1478 | ret = gen8_ppgtt_alloc_page_directories(&ppgtt->base, &ppgtt->pdp, | |
1479 | 0, 1ULL << 32, | |
1480 | new_page_dirs); | |
1481 | if (!ret) | |
1482 | *ppgtt->pdp.used_pdpes = *new_page_dirs; | |
1483 | ||
3a41a05d | 1484 | free_gen8_temp_bitmaps(new_page_dirs, new_page_tables); |
331f38e7 ZL |
1485 | |
1486 | return ret; | |
1487 | } | |
1488 | ||
eb0b44ad | 1489 | /* |
f3a964b9 BW |
1490 | * GEN8 legacy ppgtt programming is accomplished through a max 4 PDP registers |
1491 | * with a net effect resembling a 2-level page table in normal x86 terms. Each | |
1492 | * PDP represents 1GB of memory 4 * 512 * 512 * 4096 = 4GB legacy 32b address | |
1493 | * space. | |
37aca44a | 1494 | * |
f3a964b9 | 1495 | */ |
5c5f6457 | 1496 | static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt) |
37aca44a | 1497 | { |
8776f02b | 1498 | int ret; |
7cb6d7ac | 1499 | |
8776f02b MK |
1500 | ret = gen8_init_scratch(&ppgtt->base); |
1501 | if (ret) | |
1502 | return ret; | |
69876bed | 1503 | |
d7b2633d | 1504 | ppgtt->base.start = 0; |
d7b2633d | 1505 | ppgtt->base.cleanup = gen8_ppgtt_cleanup; |
5c5f6457 | 1506 | ppgtt->base.allocate_va_range = gen8_alloc_va_range; |
d7b2633d | 1507 | ppgtt->base.insert_entries = gen8_ppgtt_insert_entries; |
c7e16f22 | 1508 | ppgtt->base.clear_range = gen8_ppgtt_clear_range; |
777dc5bb DV |
1509 | ppgtt->base.unbind_vma = ppgtt_unbind_vma; |
1510 | ppgtt->base.bind_vma = ppgtt_bind_vma; | |
ea91e401 | 1511 | ppgtt->debug_dump = gen8_dump_ppgtt; |
d7b2633d | 1512 | |
762d9936 MT |
1513 | if (USES_FULL_48BIT_PPGTT(ppgtt->base.dev)) { |
1514 | ret = setup_px(ppgtt->base.dev, &ppgtt->pml4); | |
1515 | if (ret) | |
1516 | goto free_scratch; | |
6ac18502 | 1517 | |
69ab76fd MT |
1518 | gen8_initialize_pml4(&ppgtt->base, &ppgtt->pml4); |
1519 | ||
762d9936 | 1520 | ppgtt->base.total = 1ULL << 48; |
2dba3239 | 1521 | ppgtt->switch_mm = gen8_48b_mm_switch; |
762d9936 | 1522 | } else { |
25f50337 | 1523 | ret = __pdp_init(ppgtt->base.dev, &ppgtt->pdp); |
81ba8aef MT |
1524 | if (ret) |
1525 | goto free_scratch; | |
1526 | ||
1527 | ppgtt->base.total = 1ULL << 32; | |
2dba3239 | 1528 | ppgtt->switch_mm = gen8_legacy_mm_switch; |
762d9936 MT |
1529 | trace_i915_page_directory_pointer_entry_alloc(&ppgtt->base, |
1530 | 0, 0, | |
1531 | GEN8_PML4E_SHIFT); | |
331f38e7 ZL |
1532 | |
1533 | if (intel_vgpu_active(ppgtt->base.dev)) { | |
1534 | ret = gen8_preallocate_top_level_pdps(ppgtt); | |
1535 | if (ret) | |
1536 | goto free_scratch; | |
1537 | } | |
81ba8aef | 1538 | } |
6ac18502 | 1539 | |
650da34c ZL |
1540 | if (intel_vgpu_active(ppgtt->base.dev)) |
1541 | gen8_ppgtt_notify_vgt(ppgtt, true); | |
1542 | ||
d7b2633d | 1543 | return 0; |
6ac18502 MT |
1544 | |
1545 | free_scratch: | |
1546 | gen8_free_scratch(&ppgtt->base); | |
1547 | return ret; | |
d7b2633d MT |
1548 | } |
1549 | ||
87d60b63 BW |
1550 | static void gen6_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m) |
1551 | { | |
87d60b63 | 1552 | struct i915_address_space *vm = &ppgtt->base; |
09942c65 | 1553 | struct i915_page_table *unused; |
07749ef3 | 1554 | gen6_pte_t scratch_pte; |
87d60b63 | 1555 | uint32_t pd_entry; |
09942c65 MT |
1556 | uint32_t pte, pde, temp; |
1557 | uint32_t start = ppgtt->base.start, length = ppgtt->base.total; | |
87d60b63 | 1558 | |
79ab9370 MK |
1559 | scratch_pte = vm->pte_encode(px_dma(vm->scratch_page), |
1560 | I915_CACHE_LLC, true, 0); | |
87d60b63 | 1561 | |
09942c65 | 1562 | gen6_for_each_pde(unused, &ppgtt->pd, start, length, temp, pde) { |
87d60b63 | 1563 | u32 expected; |
07749ef3 | 1564 | gen6_pte_t *pt_vaddr; |
567047be | 1565 | const dma_addr_t pt_addr = px_dma(ppgtt->pd.page_table[pde]); |
09942c65 | 1566 | pd_entry = readl(ppgtt->pd_addr + pde); |
87d60b63 BW |
1567 | expected = (GEN6_PDE_ADDR_ENCODE(pt_addr) | GEN6_PDE_VALID); |
1568 | ||
1569 | if (pd_entry != expected) | |
1570 | seq_printf(m, "\tPDE #%d mismatch: Actual PDE: %x Expected PDE: %x\n", | |
1571 | pde, | |
1572 | pd_entry, | |
1573 | expected); | |
1574 | seq_printf(m, "\tPDE: %x\n", pd_entry); | |
1575 | ||
d1c54acd MK |
1576 | pt_vaddr = kmap_px(ppgtt->pd.page_table[pde]); |
1577 | ||
07749ef3 | 1578 | for (pte = 0; pte < GEN6_PTES; pte+=4) { |
87d60b63 | 1579 | unsigned long va = |
07749ef3 | 1580 | (pde * PAGE_SIZE * GEN6_PTES) + |
87d60b63 BW |
1581 | (pte * PAGE_SIZE); |
1582 | int i; | |
1583 | bool found = false; | |
1584 | for (i = 0; i < 4; i++) | |
1585 | if (pt_vaddr[pte + i] != scratch_pte) | |
1586 | found = true; | |
1587 | if (!found) | |
1588 | continue; | |
1589 | ||
1590 | seq_printf(m, "\t\t0x%lx [%03d,%04d]: =", va, pde, pte); | |
1591 | for (i = 0; i < 4; i++) { | |
1592 | if (pt_vaddr[pte + i] != scratch_pte) | |
1593 | seq_printf(m, " %08x", pt_vaddr[pte + i]); | |
1594 | else | |
1595 | seq_puts(m, " SCRATCH "); | |
1596 | } | |
1597 | seq_puts(m, "\n"); | |
1598 | } | |
d1c54acd | 1599 | kunmap_px(ppgtt, pt_vaddr); |
87d60b63 BW |
1600 | } |
1601 | } | |
1602 | ||
678d96fb | 1603 | /* Write pde (index) from the page directory @pd to the page table @pt */ |
ec565b3c MT |
1604 | static void gen6_write_pde(struct i915_page_directory *pd, |
1605 | const int pde, struct i915_page_table *pt) | |
6197349b | 1606 | { |
678d96fb BW |
1607 | /* Caller needs to make sure the write completes if necessary */ |
1608 | struct i915_hw_ppgtt *ppgtt = | |
1609 | container_of(pd, struct i915_hw_ppgtt, pd); | |
1610 | u32 pd_entry; | |
6197349b | 1611 | |
567047be | 1612 | pd_entry = GEN6_PDE_ADDR_ENCODE(px_dma(pt)); |
678d96fb | 1613 | pd_entry |= GEN6_PDE_VALID; |
6197349b | 1614 | |
678d96fb BW |
1615 | writel(pd_entry, ppgtt->pd_addr + pde); |
1616 | } | |
6197349b | 1617 | |
678d96fb BW |
1618 | /* Write all the page tables found in the ppgtt structure to incrementing page |
1619 | * directories. */ | |
1620 | static void gen6_write_page_range(struct drm_i915_private *dev_priv, | |
ec565b3c | 1621 | struct i915_page_directory *pd, |
678d96fb BW |
1622 | uint32_t start, uint32_t length) |
1623 | { | |
72e96d64 | 1624 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
ec565b3c | 1625 | struct i915_page_table *pt; |
678d96fb BW |
1626 | uint32_t pde, temp; |
1627 | ||
1628 | gen6_for_each_pde(pt, pd, start, length, temp, pde) | |
1629 | gen6_write_pde(pd, pde, pt); | |
1630 | ||
1631 | /* Make sure write is complete before other code can use this page | |
1632 | * table. Also require for WC mapped PTEs */ | |
72e96d64 | 1633 | readl(ggtt->gsm); |
3e302542 BW |
1634 | } |
1635 | ||
b4a74e3a | 1636 | static uint32_t get_pd_offset(struct i915_hw_ppgtt *ppgtt) |
3e302542 | 1637 | { |
44159ddb | 1638 | BUG_ON(ppgtt->pd.base.ggtt_offset & 0x3f); |
b4a74e3a | 1639 | |
44159ddb | 1640 | return (ppgtt->pd.base.ggtt_offset / 64) << 16; |
b4a74e3a BW |
1641 | } |
1642 | ||
90252e5c | 1643 | static int hsw_mm_switch(struct i915_hw_ppgtt *ppgtt, |
e85b26dc | 1644 | struct drm_i915_gem_request *req) |
90252e5c | 1645 | { |
4a570db5 | 1646 | struct intel_engine_cs *engine = req->engine; |
90252e5c BW |
1647 | int ret; |
1648 | ||
90252e5c | 1649 | /* NB: TLBs must be flushed and invalidated before a switch */ |
e2f80391 | 1650 | ret = engine->flush(req, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
90252e5c BW |
1651 | if (ret) |
1652 | return ret; | |
1653 | ||
5fb9de1a | 1654 | ret = intel_ring_begin(req, 6); |
90252e5c BW |
1655 | if (ret) |
1656 | return ret; | |
1657 | ||
e2f80391 TU |
1658 | intel_ring_emit(engine, MI_LOAD_REGISTER_IMM(2)); |
1659 | intel_ring_emit_reg(engine, RING_PP_DIR_DCLV(engine)); | |
1660 | intel_ring_emit(engine, PP_DIR_DCLV_2G); | |
1661 | intel_ring_emit_reg(engine, RING_PP_DIR_BASE(engine)); | |
1662 | intel_ring_emit(engine, get_pd_offset(ppgtt)); | |
1663 | intel_ring_emit(engine, MI_NOOP); | |
1664 | intel_ring_advance(engine); | |
90252e5c BW |
1665 | |
1666 | return 0; | |
1667 | } | |
1668 | ||
71ba2d64 | 1669 | static int vgpu_mm_switch(struct i915_hw_ppgtt *ppgtt, |
e85b26dc | 1670 | struct drm_i915_gem_request *req) |
71ba2d64 | 1671 | { |
4a570db5 | 1672 | struct intel_engine_cs *engine = req->engine; |
71ba2d64 YZ |
1673 | struct drm_i915_private *dev_priv = to_i915(ppgtt->base.dev); |
1674 | ||
e2f80391 TU |
1675 | I915_WRITE(RING_PP_DIR_DCLV(engine), PP_DIR_DCLV_2G); |
1676 | I915_WRITE(RING_PP_DIR_BASE(engine), get_pd_offset(ppgtt)); | |
71ba2d64 YZ |
1677 | return 0; |
1678 | } | |
1679 | ||
48a10389 | 1680 | static int gen7_mm_switch(struct i915_hw_ppgtt *ppgtt, |
e85b26dc | 1681 | struct drm_i915_gem_request *req) |
48a10389 | 1682 | { |
4a570db5 | 1683 | struct intel_engine_cs *engine = req->engine; |
48a10389 BW |
1684 | int ret; |
1685 | ||
48a10389 | 1686 | /* NB: TLBs must be flushed and invalidated before a switch */ |
e2f80391 | 1687 | ret = engine->flush(req, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
48a10389 BW |
1688 | if (ret) |
1689 | return ret; | |
1690 | ||
5fb9de1a | 1691 | ret = intel_ring_begin(req, 6); |
48a10389 BW |
1692 | if (ret) |
1693 | return ret; | |
1694 | ||
e2f80391 TU |
1695 | intel_ring_emit(engine, MI_LOAD_REGISTER_IMM(2)); |
1696 | intel_ring_emit_reg(engine, RING_PP_DIR_DCLV(engine)); | |
1697 | intel_ring_emit(engine, PP_DIR_DCLV_2G); | |
1698 | intel_ring_emit_reg(engine, RING_PP_DIR_BASE(engine)); | |
1699 | intel_ring_emit(engine, get_pd_offset(ppgtt)); | |
1700 | intel_ring_emit(engine, MI_NOOP); | |
1701 | intel_ring_advance(engine); | |
48a10389 | 1702 | |
90252e5c | 1703 | /* XXX: RCS is the only one to auto invalidate the TLBs? */ |
e2f80391 TU |
1704 | if (engine->id != RCS) { |
1705 | ret = engine->flush(req, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); | |
90252e5c BW |
1706 | if (ret) |
1707 | return ret; | |
1708 | } | |
1709 | ||
48a10389 BW |
1710 | return 0; |
1711 | } | |
1712 | ||
eeb9488e | 1713 | static int gen6_mm_switch(struct i915_hw_ppgtt *ppgtt, |
e85b26dc | 1714 | struct drm_i915_gem_request *req) |
eeb9488e | 1715 | { |
4a570db5 | 1716 | struct intel_engine_cs *engine = req->engine; |
eeb9488e BW |
1717 | struct drm_device *dev = ppgtt->base.dev; |
1718 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1719 | ||
48a10389 | 1720 | |
e2f80391 TU |
1721 | I915_WRITE(RING_PP_DIR_DCLV(engine), PP_DIR_DCLV_2G); |
1722 | I915_WRITE(RING_PP_DIR_BASE(engine), get_pd_offset(ppgtt)); | |
eeb9488e | 1723 | |
e2f80391 | 1724 | POSTING_READ(RING_PP_DIR_DCLV(engine)); |
eeb9488e BW |
1725 | |
1726 | return 0; | |
1727 | } | |
1728 | ||
82460d97 | 1729 | static void gen8_ppgtt_enable(struct drm_device *dev) |
eeb9488e | 1730 | { |
eeb9488e | 1731 | struct drm_i915_private *dev_priv = dev->dev_private; |
e2f80391 | 1732 | struct intel_engine_cs *engine; |
3e302542 | 1733 | |
b4ac5afc | 1734 | for_each_engine(engine, dev_priv) { |
2dba3239 | 1735 | u32 four_level = USES_FULL_48BIT_PPGTT(dev) ? GEN8_GFX_PPGTT_48B : 0; |
e2f80391 | 1736 | I915_WRITE(RING_MODE_GEN7(engine), |
2dba3239 | 1737 | _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE | four_level)); |
eeb9488e | 1738 | } |
eeb9488e | 1739 | } |
6197349b | 1740 | |
82460d97 | 1741 | static void gen7_ppgtt_enable(struct drm_device *dev) |
3e302542 | 1742 | { |
50227e1c | 1743 | struct drm_i915_private *dev_priv = dev->dev_private; |
e2f80391 | 1744 | struct intel_engine_cs *engine; |
b4a74e3a | 1745 | uint32_t ecochk, ecobits; |
6197349b | 1746 | |
b4a74e3a BW |
1747 | ecobits = I915_READ(GAC_ECO_BITS); |
1748 | I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_PPGTT_CACHE64B); | |
a65c2fcd | 1749 | |
b4a74e3a BW |
1750 | ecochk = I915_READ(GAM_ECOCHK); |
1751 | if (IS_HASWELL(dev)) { | |
1752 | ecochk |= ECOCHK_PPGTT_WB_HSW; | |
1753 | } else { | |
1754 | ecochk |= ECOCHK_PPGTT_LLC_IVB; | |
1755 | ecochk &= ~ECOCHK_PPGTT_GFDT_IVB; | |
1756 | } | |
1757 | I915_WRITE(GAM_ECOCHK, ecochk); | |
a65c2fcd | 1758 | |
b4ac5afc | 1759 | for_each_engine(engine, dev_priv) { |
6197349b | 1760 | /* GFX_MODE is per-ring on gen7+ */ |
e2f80391 | 1761 | I915_WRITE(RING_MODE_GEN7(engine), |
b4a74e3a | 1762 | _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE)); |
6197349b | 1763 | } |
b4a74e3a | 1764 | } |
6197349b | 1765 | |
82460d97 | 1766 | static void gen6_ppgtt_enable(struct drm_device *dev) |
b4a74e3a | 1767 | { |
50227e1c | 1768 | struct drm_i915_private *dev_priv = dev->dev_private; |
b4a74e3a | 1769 | uint32_t ecochk, gab_ctl, ecobits; |
a65c2fcd | 1770 | |
b4a74e3a BW |
1771 | ecobits = I915_READ(GAC_ECO_BITS); |
1772 | I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_SNB_BIT | | |
1773 | ECOBITS_PPGTT_CACHE64B); | |
6197349b | 1774 | |
b4a74e3a BW |
1775 | gab_ctl = I915_READ(GAB_CTL); |
1776 | I915_WRITE(GAB_CTL, gab_ctl | GAB_CTL_CONT_AFTER_PAGEFAULT); | |
1777 | ||
1778 | ecochk = I915_READ(GAM_ECOCHK); | |
1779 | I915_WRITE(GAM_ECOCHK, ecochk | ECOCHK_SNB_BIT | ECOCHK_PPGTT_CACHE64B); | |
1780 | ||
1781 | I915_WRITE(GFX_MODE, _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE)); | |
6197349b BW |
1782 | } |
1783 | ||
1d2a314c | 1784 | /* PPGTT support for Sandybdrige/Gen6 and later */ |
853ba5d2 | 1785 | static void gen6_ppgtt_clear_range(struct i915_address_space *vm, |
782f1495 BW |
1786 | uint64_t start, |
1787 | uint64_t length, | |
828c7908 | 1788 | bool use_scratch) |
1d2a314c | 1789 | { |
e5716f55 | 1790 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
07749ef3 | 1791 | gen6_pte_t *pt_vaddr, scratch_pte; |
782f1495 BW |
1792 | unsigned first_entry = start >> PAGE_SHIFT; |
1793 | unsigned num_entries = length >> PAGE_SHIFT; | |
07749ef3 MT |
1794 | unsigned act_pt = first_entry / GEN6_PTES; |
1795 | unsigned first_pte = first_entry % GEN6_PTES; | |
7bddb01f | 1796 | unsigned last_pte, i; |
1d2a314c | 1797 | |
c114f76a MK |
1798 | scratch_pte = vm->pte_encode(px_dma(vm->scratch_page), |
1799 | I915_CACHE_LLC, true, 0); | |
1d2a314c | 1800 | |
7bddb01f DV |
1801 | while (num_entries) { |
1802 | last_pte = first_pte + num_entries; | |
07749ef3 MT |
1803 | if (last_pte > GEN6_PTES) |
1804 | last_pte = GEN6_PTES; | |
7bddb01f | 1805 | |
d1c54acd | 1806 | pt_vaddr = kmap_px(ppgtt->pd.page_table[act_pt]); |
1d2a314c | 1807 | |
7bddb01f DV |
1808 | for (i = first_pte; i < last_pte; i++) |
1809 | pt_vaddr[i] = scratch_pte; | |
1d2a314c | 1810 | |
d1c54acd | 1811 | kunmap_px(ppgtt, pt_vaddr); |
1d2a314c | 1812 | |
7bddb01f DV |
1813 | num_entries -= last_pte - first_pte; |
1814 | first_pte = 0; | |
a15326a5 | 1815 | act_pt++; |
7bddb01f | 1816 | } |
1d2a314c DV |
1817 | } |
1818 | ||
853ba5d2 | 1819 | static void gen6_ppgtt_insert_entries(struct i915_address_space *vm, |
def886c3 | 1820 | struct sg_table *pages, |
782f1495 | 1821 | uint64_t start, |
24f3a8cf | 1822 | enum i915_cache_level cache_level, u32 flags) |
def886c3 | 1823 | { |
e5716f55 | 1824 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
07749ef3 | 1825 | gen6_pte_t *pt_vaddr; |
782f1495 | 1826 | unsigned first_entry = start >> PAGE_SHIFT; |
07749ef3 MT |
1827 | unsigned act_pt = first_entry / GEN6_PTES; |
1828 | unsigned act_pte = first_entry % GEN6_PTES; | |
6e995e23 ID |
1829 | struct sg_page_iter sg_iter; |
1830 | ||
cc79714f | 1831 | pt_vaddr = NULL; |
6e995e23 | 1832 | for_each_sg_page(pages->sgl, &sg_iter, pages->nents, 0) { |
cc79714f | 1833 | if (pt_vaddr == NULL) |
d1c54acd | 1834 | pt_vaddr = kmap_px(ppgtt->pd.page_table[act_pt]); |
6e995e23 | 1835 | |
cc79714f CW |
1836 | pt_vaddr[act_pte] = |
1837 | vm->pte_encode(sg_page_iter_dma_address(&sg_iter), | |
24f3a8cf AG |
1838 | cache_level, true, flags); |
1839 | ||
07749ef3 | 1840 | if (++act_pte == GEN6_PTES) { |
d1c54acd | 1841 | kunmap_px(ppgtt, pt_vaddr); |
cc79714f | 1842 | pt_vaddr = NULL; |
a15326a5 | 1843 | act_pt++; |
6e995e23 | 1844 | act_pte = 0; |
def886c3 | 1845 | } |
def886c3 | 1846 | } |
cc79714f | 1847 | if (pt_vaddr) |
d1c54acd | 1848 | kunmap_px(ppgtt, pt_vaddr); |
def886c3 DV |
1849 | } |
1850 | ||
678d96fb | 1851 | static int gen6_alloc_va_range(struct i915_address_space *vm, |
a05d80ee | 1852 | uint64_t start_in, uint64_t length_in) |
678d96fb | 1853 | { |
4933d519 MT |
1854 | DECLARE_BITMAP(new_page_tables, I915_PDES); |
1855 | struct drm_device *dev = vm->dev; | |
72e96d64 JL |
1856 | struct drm_i915_private *dev_priv = to_i915(dev); |
1857 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
e5716f55 | 1858 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
ec565b3c | 1859 | struct i915_page_table *pt; |
a05d80ee | 1860 | uint32_t start, length, start_save, length_save; |
678d96fb | 1861 | uint32_t pde, temp; |
4933d519 MT |
1862 | int ret; |
1863 | ||
a05d80ee MK |
1864 | if (WARN_ON(start_in + length_in > ppgtt->base.total)) |
1865 | return -ENODEV; | |
1866 | ||
1867 | start = start_save = start_in; | |
1868 | length = length_save = length_in; | |
4933d519 MT |
1869 | |
1870 | bitmap_zero(new_page_tables, I915_PDES); | |
1871 | ||
1872 | /* The allocation is done in two stages so that we can bail out with | |
1873 | * minimal amount of pain. The first stage finds new page tables that | |
1874 | * need allocation. The second stage marks use ptes within the page | |
1875 | * tables. | |
1876 | */ | |
1877 | gen6_for_each_pde(pt, &ppgtt->pd, start, length, temp, pde) { | |
79ab9370 | 1878 | if (pt != vm->scratch_pt) { |
4933d519 MT |
1879 | WARN_ON(bitmap_empty(pt->used_ptes, GEN6_PTES)); |
1880 | continue; | |
1881 | } | |
1882 | ||
1883 | /* We've already allocated a page table */ | |
1884 | WARN_ON(!bitmap_empty(pt->used_ptes, GEN6_PTES)); | |
1885 | ||
8a1ebd74 | 1886 | pt = alloc_pt(dev); |
4933d519 MT |
1887 | if (IS_ERR(pt)) { |
1888 | ret = PTR_ERR(pt); | |
1889 | goto unwind_out; | |
1890 | } | |
1891 | ||
1892 | gen6_initialize_pt(vm, pt); | |
1893 | ||
1894 | ppgtt->pd.page_table[pde] = pt; | |
966082c9 | 1895 | __set_bit(pde, new_page_tables); |
72744cb1 | 1896 | trace_i915_page_table_entry_alloc(vm, pde, start, GEN6_PDE_SHIFT); |
4933d519 MT |
1897 | } |
1898 | ||
1899 | start = start_save; | |
1900 | length = length_save; | |
678d96fb BW |
1901 | |
1902 | gen6_for_each_pde(pt, &ppgtt->pd, start, length, temp, pde) { | |
1903 | DECLARE_BITMAP(tmp_bitmap, GEN6_PTES); | |
1904 | ||
1905 | bitmap_zero(tmp_bitmap, GEN6_PTES); | |
1906 | bitmap_set(tmp_bitmap, gen6_pte_index(start), | |
1907 | gen6_pte_count(start, length)); | |
1908 | ||
966082c9 | 1909 | if (__test_and_clear_bit(pde, new_page_tables)) |
4933d519 MT |
1910 | gen6_write_pde(&ppgtt->pd, pde, pt); |
1911 | ||
72744cb1 MT |
1912 | trace_i915_page_table_entry_map(vm, pde, pt, |
1913 | gen6_pte_index(start), | |
1914 | gen6_pte_count(start, length), | |
1915 | GEN6_PTES); | |
4933d519 | 1916 | bitmap_or(pt->used_ptes, tmp_bitmap, pt->used_ptes, |
678d96fb BW |
1917 | GEN6_PTES); |
1918 | } | |
1919 | ||
4933d519 MT |
1920 | WARN_ON(!bitmap_empty(new_page_tables, I915_PDES)); |
1921 | ||
1922 | /* Make sure write is complete before other code can use this page | |
1923 | * table. Also require for WC mapped PTEs */ | |
72e96d64 | 1924 | readl(ggtt->gsm); |
4933d519 | 1925 | |
563222a7 | 1926 | mark_tlbs_dirty(ppgtt); |
678d96fb | 1927 | return 0; |
4933d519 MT |
1928 | |
1929 | unwind_out: | |
1930 | for_each_set_bit(pde, new_page_tables, I915_PDES) { | |
ec565b3c | 1931 | struct i915_page_table *pt = ppgtt->pd.page_table[pde]; |
4933d519 | 1932 | |
79ab9370 | 1933 | ppgtt->pd.page_table[pde] = vm->scratch_pt; |
a08e111a | 1934 | free_pt(vm->dev, pt); |
4933d519 MT |
1935 | } |
1936 | ||
1937 | mark_tlbs_dirty(ppgtt); | |
1938 | return ret; | |
678d96fb BW |
1939 | } |
1940 | ||
8776f02b MK |
1941 | static int gen6_init_scratch(struct i915_address_space *vm) |
1942 | { | |
1943 | struct drm_device *dev = vm->dev; | |
1944 | ||
1945 | vm->scratch_page = alloc_scratch_page(dev); | |
1946 | if (IS_ERR(vm->scratch_page)) | |
1947 | return PTR_ERR(vm->scratch_page); | |
1948 | ||
1949 | vm->scratch_pt = alloc_pt(dev); | |
1950 | if (IS_ERR(vm->scratch_pt)) { | |
1951 | free_scratch_page(dev, vm->scratch_page); | |
1952 | return PTR_ERR(vm->scratch_pt); | |
1953 | } | |
1954 | ||
1955 | gen6_initialize_pt(vm, vm->scratch_pt); | |
1956 | ||
1957 | return 0; | |
1958 | } | |
1959 | ||
1960 | static void gen6_free_scratch(struct i915_address_space *vm) | |
1961 | { | |
1962 | struct drm_device *dev = vm->dev; | |
1963 | ||
1964 | free_pt(dev, vm->scratch_pt); | |
1965 | free_scratch_page(dev, vm->scratch_page); | |
1966 | } | |
1967 | ||
061dd493 | 1968 | static void gen6_ppgtt_cleanup(struct i915_address_space *vm) |
a00d825d | 1969 | { |
e5716f55 | 1970 | struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); |
09942c65 MT |
1971 | struct i915_page_table *pt; |
1972 | uint32_t pde; | |
4933d519 | 1973 | |
061dd493 DV |
1974 | drm_mm_remove_node(&ppgtt->node); |
1975 | ||
09942c65 | 1976 | gen6_for_all_pdes(pt, ppgtt, pde) { |
79ab9370 | 1977 | if (pt != vm->scratch_pt) |
a08e111a | 1978 | free_pt(ppgtt->base.dev, pt); |
4933d519 | 1979 | } |
06fda602 | 1980 | |
8776f02b | 1981 | gen6_free_scratch(vm); |
3440d265 DV |
1982 | } |
1983 | ||
b146520f | 1984 | static int gen6_ppgtt_allocate_page_directories(struct i915_hw_ppgtt *ppgtt) |
3440d265 | 1985 | { |
8776f02b | 1986 | struct i915_address_space *vm = &ppgtt->base; |
853ba5d2 | 1987 | struct drm_device *dev = ppgtt->base.dev; |
72e96d64 JL |
1988 | struct drm_i915_private *dev_priv = to_i915(dev); |
1989 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
e3cc1995 | 1990 | bool retried = false; |
b146520f | 1991 | int ret; |
1d2a314c | 1992 | |
c8d4c0d6 BW |
1993 | /* PPGTT PDEs reside in the GGTT and consists of 512 entries. The |
1994 | * allocator works in address space sizes, so it's multiplied by page | |
1995 | * size. We allocate at the top of the GTT to avoid fragmentation. | |
1996 | */ | |
72e96d64 | 1997 | BUG_ON(!drm_mm_initialized(&ggtt->base.mm)); |
4933d519 | 1998 | |
8776f02b MK |
1999 | ret = gen6_init_scratch(vm); |
2000 | if (ret) | |
2001 | return ret; | |
4933d519 | 2002 | |
e3cc1995 | 2003 | alloc: |
72e96d64 | 2004 | ret = drm_mm_insert_node_in_range_generic(&ggtt->base.mm, |
c8d4c0d6 BW |
2005 | &ppgtt->node, GEN6_PD_SIZE, |
2006 | GEN6_PD_ALIGN, 0, | |
72e96d64 | 2007 | 0, ggtt->base.total, |
3e8b5ae9 | 2008 | DRM_MM_TOPDOWN); |
e3cc1995 | 2009 | if (ret == -ENOSPC && !retried) { |
72e96d64 | 2010 | ret = i915_gem_evict_something(dev, &ggtt->base, |
e3cc1995 | 2011 | GEN6_PD_SIZE, GEN6_PD_ALIGN, |
d23db88c | 2012 | I915_CACHE_NONE, |
72e96d64 | 2013 | 0, ggtt->base.total, |
d23db88c | 2014 | 0); |
e3cc1995 | 2015 | if (ret) |
678d96fb | 2016 | goto err_out; |
e3cc1995 BW |
2017 | |
2018 | retried = true; | |
2019 | goto alloc; | |
2020 | } | |
c8d4c0d6 | 2021 | |
c8c26622 | 2022 | if (ret) |
678d96fb BW |
2023 | goto err_out; |
2024 | ||
c8c26622 | 2025 | |
72e96d64 | 2026 | if (ppgtt->node.start < ggtt->mappable_end) |
c8d4c0d6 | 2027 | DRM_DEBUG("Forced to use aperture for PDEs\n"); |
1d2a314c | 2028 | |
c8c26622 | 2029 | return 0; |
678d96fb BW |
2030 | |
2031 | err_out: | |
8776f02b | 2032 | gen6_free_scratch(vm); |
678d96fb | 2033 | return ret; |
b146520f BW |
2034 | } |
2035 | ||
b146520f BW |
2036 | static int gen6_ppgtt_alloc(struct i915_hw_ppgtt *ppgtt) |
2037 | { | |
2f2cf682 | 2038 | return gen6_ppgtt_allocate_page_directories(ppgtt); |
4933d519 | 2039 | } |
06dc68d6 | 2040 | |
4933d519 MT |
2041 | static void gen6_scratch_va_range(struct i915_hw_ppgtt *ppgtt, |
2042 | uint64_t start, uint64_t length) | |
2043 | { | |
ec565b3c | 2044 | struct i915_page_table *unused; |
4933d519 | 2045 | uint32_t pde, temp; |
1d2a314c | 2046 | |
4933d519 | 2047 | gen6_for_each_pde(unused, &ppgtt->pd, start, length, temp, pde) |
79ab9370 | 2048 | ppgtt->pd.page_table[pde] = ppgtt->base.scratch_pt; |
b146520f BW |
2049 | } |
2050 | ||
5c5f6457 | 2051 | static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt) |
b146520f BW |
2052 | { |
2053 | struct drm_device *dev = ppgtt->base.dev; | |
72e96d64 JL |
2054 | struct drm_i915_private *dev_priv = to_i915(dev); |
2055 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
b146520f BW |
2056 | int ret; |
2057 | ||
72e96d64 | 2058 | ppgtt->base.pte_encode = ggtt->base.pte_encode; |
b146520f | 2059 | if (IS_GEN6(dev)) { |
b146520f BW |
2060 | ppgtt->switch_mm = gen6_mm_switch; |
2061 | } else if (IS_HASWELL(dev)) { | |
b146520f BW |
2062 | ppgtt->switch_mm = hsw_mm_switch; |
2063 | } else if (IS_GEN7(dev)) { | |
b146520f BW |
2064 | ppgtt->switch_mm = gen7_mm_switch; |
2065 | } else | |
2066 | BUG(); | |
2067 | ||
71ba2d64 YZ |
2068 | if (intel_vgpu_active(dev)) |
2069 | ppgtt->switch_mm = vgpu_mm_switch; | |
2070 | ||
b146520f BW |
2071 | ret = gen6_ppgtt_alloc(ppgtt); |
2072 | if (ret) | |
2073 | return ret; | |
2074 | ||
5c5f6457 | 2075 | ppgtt->base.allocate_va_range = gen6_alloc_va_range; |
b146520f BW |
2076 | ppgtt->base.clear_range = gen6_ppgtt_clear_range; |
2077 | ppgtt->base.insert_entries = gen6_ppgtt_insert_entries; | |
777dc5bb DV |
2078 | ppgtt->base.unbind_vma = ppgtt_unbind_vma; |
2079 | ppgtt->base.bind_vma = ppgtt_bind_vma; | |
b146520f | 2080 | ppgtt->base.cleanup = gen6_ppgtt_cleanup; |
b146520f | 2081 | ppgtt->base.start = 0; |
09942c65 | 2082 | ppgtt->base.total = I915_PDES * GEN6_PTES * PAGE_SIZE; |
87d60b63 | 2083 | ppgtt->debug_dump = gen6_dump_ppgtt; |
1d2a314c | 2084 | |
44159ddb | 2085 | ppgtt->pd.base.ggtt_offset = |
07749ef3 | 2086 | ppgtt->node.start / PAGE_SIZE * sizeof(gen6_pte_t); |
1d2a314c | 2087 | |
72e96d64 | 2088 | ppgtt->pd_addr = (gen6_pte_t __iomem *)ggtt->gsm + |
44159ddb | 2089 | ppgtt->pd.base.ggtt_offset / sizeof(gen6_pte_t); |
678d96fb | 2090 | |
5c5f6457 | 2091 | gen6_scratch_va_range(ppgtt, 0, ppgtt->base.total); |
1d2a314c | 2092 | |
678d96fb BW |
2093 | gen6_write_page_range(dev_priv, &ppgtt->pd, 0, ppgtt->base.total); |
2094 | ||
440fd528 | 2095 | DRM_DEBUG_DRIVER("Allocated pde space (%lldM) at GTT entry: %llx\n", |
b146520f BW |
2096 | ppgtt->node.size >> 20, |
2097 | ppgtt->node.start / PAGE_SIZE); | |
3440d265 | 2098 | |
fa76da34 | 2099 | DRM_DEBUG("Adding PPGTT at offset %x\n", |
44159ddb | 2100 | ppgtt->pd.base.ggtt_offset << 10); |
fa76da34 | 2101 | |
b146520f | 2102 | return 0; |
3440d265 DV |
2103 | } |
2104 | ||
5c5f6457 | 2105 | static int __hw_ppgtt_init(struct drm_device *dev, struct i915_hw_ppgtt *ppgtt) |
3440d265 | 2106 | { |
853ba5d2 | 2107 | ppgtt->base.dev = dev; |
3440d265 | 2108 | |
3ed124b2 | 2109 | if (INTEL_INFO(dev)->gen < 8) |
5c5f6457 | 2110 | return gen6_ppgtt_init(ppgtt); |
3ed124b2 | 2111 | else |
d7b2633d | 2112 | return gen8_ppgtt_init(ppgtt); |
fa76da34 | 2113 | } |
c114f76a | 2114 | |
a2cad9df MW |
2115 | static void i915_address_space_init(struct i915_address_space *vm, |
2116 | struct drm_i915_private *dev_priv) | |
2117 | { | |
2118 | drm_mm_init(&vm->mm, vm->start, vm->total); | |
2119 | vm->dev = dev_priv->dev; | |
2120 | INIT_LIST_HEAD(&vm->active_list); | |
2121 | INIT_LIST_HEAD(&vm->inactive_list); | |
2122 | list_add_tail(&vm->global_link, &dev_priv->vm_list); | |
2123 | } | |
2124 | ||
d5165ebd TG |
2125 | static void gtt_write_workarounds(struct drm_device *dev) |
2126 | { | |
2127 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2128 | ||
2129 | /* This function is for gtt related workarounds. This function is | |
2130 | * called on driver load and after a GPU reset, so you can place | |
2131 | * workarounds here even if they get overwritten by GPU reset. | |
2132 | */ | |
2133 | /* WaIncreaseDefaultTLBEntries:chv,bdw,skl,bxt */ | |
2134 | if (IS_BROADWELL(dev)) | |
2135 | I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN8_L3_LRA_1_GPGPU_DEFAULT_VALUE_BDW); | |
2136 | else if (IS_CHERRYVIEW(dev)) | |
2137 | I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN8_L3_LRA_1_GPGPU_DEFAULT_VALUE_CHV); | |
2138 | else if (IS_SKYLAKE(dev)) | |
2139 | I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN9_L3_LRA_1_GPGPU_DEFAULT_VALUE_SKL); | |
2140 | else if (IS_BROXTON(dev)) | |
2141 | I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN9_L3_LRA_1_GPGPU_DEFAULT_VALUE_BXT); | |
2142 | } | |
2143 | ||
fa76da34 DV |
2144 | int i915_ppgtt_init(struct drm_device *dev, struct i915_hw_ppgtt *ppgtt) |
2145 | { | |
2146 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2147 | int ret = 0; | |
3ed124b2 | 2148 | |
5c5f6457 | 2149 | ret = __hw_ppgtt_init(dev, ppgtt); |
fa76da34 | 2150 | if (ret == 0) { |
c7c48dfd | 2151 | kref_init(&ppgtt->ref); |
a2cad9df | 2152 | i915_address_space_init(&ppgtt->base, dev_priv); |
93bd8649 | 2153 | } |
1d2a314c DV |
2154 | |
2155 | return ret; | |
2156 | } | |
2157 | ||
82460d97 DV |
2158 | int i915_ppgtt_init_hw(struct drm_device *dev) |
2159 | { | |
d5165ebd TG |
2160 | gtt_write_workarounds(dev); |
2161 | ||
671b5013 TD |
2162 | /* In the case of execlists, PPGTT is enabled by the context descriptor |
2163 | * and the PDPs are contained within the context itself. We don't | |
2164 | * need to do anything here. */ | |
2165 | if (i915.enable_execlists) | |
2166 | return 0; | |
2167 | ||
82460d97 DV |
2168 | if (!USES_PPGTT(dev)) |
2169 | return 0; | |
2170 | ||
2171 | if (IS_GEN6(dev)) | |
2172 | gen6_ppgtt_enable(dev); | |
2173 | else if (IS_GEN7(dev)) | |
2174 | gen7_ppgtt_enable(dev); | |
2175 | else if (INTEL_INFO(dev)->gen >= 8) | |
2176 | gen8_ppgtt_enable(dev); | |
2177 | else | |
5f77eeb0 | 2178 | MISSING_CASE(INTEL_INFO(dev)->gen); |
82460d97 | 2179 | |
4ad2fd88 JH |
2180 | return 0; |
2181 | } | |
1d2a314c | 2182 | |
b3dd6b96 | 2183 | int i915_ppgtt_init_ring(struct drm_i915_gem_request *req) |
4ad2fd88 | 2184 | { |
39dabecd | 2185 | struct drm_i915_private *dev_priv = req->i915; |
4ad2fd88 JH |
2186 | struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt; |
2187 | ||
2188 | if (i915.enable_execlists) | |
2189 | return 0; | |
2190 | ||
2191 | if (!ppgtt) | |
2192 | return 0; | |
2193 | ||
e85b26dc | 2194 | return ppgtt->switch_mm(ppgtt, req); |
1d2a314c | 2195 | } |
4ad2fd88 | 2196 | |
4d884705 DV |
2197 | struct i915_hw_ppgtt * |
2198 | i915_ppgtt_create(struct drm_device *dev, struct drm_i915_file_private *fpriv) | |
2199 | { | |
2200 | struct i915_hw_ppgtt *ppgtt; | |
2201 | int ret; | |
2202 | ||
2203 | ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL); | |
2204 | if (!ppgtt) | |
2205 | return ERR_PTR(-ENOMEM); | |
2206 | ||
2207 | ret = i915_ppgtt_init(dev, ppgtt); | |
2208 | if (ret) { | |
2209 | kfree(ppgtt); | |
2210 | return ERR_PTR(ret); | |
2211 | } | |
2212 | ||
2213 | ppgtt->file_priv = fpriv; | |
2214 | ||
198c974d DCS |
2215 | trace_i915_ppgtt_create(&ppgtt->base); |
2216 | ||
4d884705 DV |
2217 | return ppgtt; |
2218 | } | |
2219 | ||
ee960be7 DV |
2220 | void i915_ppgtt_release(struct kref *kref) |
2221 | { | |
2222 | struct i915_hw_ppgtt *ppgtt = | |
2223 | container_of(kref, struct i915_hw_ppgtt, ref); | |
2224 | ||
198c974d DCS |
2225 | trace_i915_ppgtt_release(&ppgtt->base); |
2226 | ||
ee960be7 DV |
2227 | /* vmas should already be unbound */ |
2228 | WARN_ON(!list_empty(&ppgtt->base.active_list)); | |
2229 | WARN_ON(!list_empty(&ppgtt->base.inactive_list)); | |
2230 | ||
19dd120c DV |
2231 | list_del(&ppgtt->base.global_link); |
2232 | drm_mm_takedown(&ppgtt->base.mm); | |
2233 | ||
ee960be7 DV |
2234 | ppgtt->base.cleanup(&ppgtt->base); |
2235 | kfree(ppgtt); | |
2236 | } | |
1d2a314c | 2237 | |
a81cc00c BW |
2238 | extern int intel_iommu_gfx_mapped; |
2239 | /* Certain Gen5 chipsets require require idling the GPU before | |
2240 | * unmapping anything from the GTT when VT-d is enabled. | |
2241 | */ | |
2c642b07 | 2242 | static bool needs_idle_maps(struct drm_device *dev) |
a81cc00c BW |
2243 | { |
2244 | #ifdef CONFIG_INTEL_IOMMU | |
2245 | /* Query intel_iommu to see if we need the workaround. Presumably that | |
2246 | * was loaded first. | |
2247 | */ | |
2248 | if (IS_GEN5(dev) && IS_MOBILE(dev) && intel_iommu_gfx_mapped) | |
2249 | return true; | |
2250 | #endif | |
2251 | return false; | |
2252 | } | |
2253 | ||
5c042287 BW |
2254 | static bool do_idling(struct drm_i915_private *dev_priv) |
2255 | { | |
72e96d64 | 2256 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
5c042287 BW |
2257 | bool ret = dev_priv->mm.interruptible; |
2258 | ||
72e96d64 | 2259 | if (unlikely(ggtt->do_idle_maps)) { |
5c042287 | 2260 | dev_priv->mm.interruptible = false; |
b2da9fe5 | 2261 | if (i915_gpu_idle(dev_priv->dev)) { |
5c042287 BW |
2262 | DRM_ERROR("Couldn't idle GPU\n"); |
2263 | /* Wait a bit, in hopes it avoids the hang */ | |
2264 | udelay(10); | |
2265 | } | |
2266 | } | |
2267 | ||
2268 | return ret; | |
2269 | } | |
2270 | ||
2271 | static void undo_idling(struct drm_i915_private *dev_priv, bool interruptible) | |
2272 | { | |
72e96d64 JL |
2273 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
2274 | ||
2275 | if (unlikely(ggtt->do_idle_maps)) | |
5c042287 BW |
2276 | dev_priv->mm.interruptible = interruptible; |
2277 | } | |
2278 | ||
828c7908 BW |
2279 | void i915_check_and_clear_faults(struct drm_device *dev) |
2280 | { | |
2281 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e2f80391 | 2282 | struct intel_engine_cs *engine; |
828c7908 BW |
2283 | |
2284 | if (INTEL_INFO(dev)->gen < 6) | |
2285 | return; | |
2286 | ||
b4ac5afc | 2287 | for_each_engine(engine, dev_priv) { |
828c7908 | 2288 | u32 fault_reg; |
e2f80391 | 2289 | fault_reg = I915_READ(RING_FAULT_REG(engine)); |
828c7908 BW |
2290 | if (fault_reg & RING_FAULT_VALID) { |
2291 | DRM_DEBUG_DRIVER("Unexpected fault\n" | |
59a5d290 | 2292 | "\tAddr: 0x%08lx\n" |
828c7908 BW |
2293 | "\tAddress space: %s\n" |
2294 | "\tSource ID: %d\n" | |
2295 | "\tType: %d\n", | |
2296 | fault_reg & PAGE_MASK, | |
2297 | fault_reg & RING_FAULT_GTTSEL_MASK ? "GGTT" : "PPGTT", | |
2298 | RING_FAULT_SRCID(fault_reg), | |
2299 | RING_FAULT_FAULT_TYPE(fault_reg)); | |
e2f80391 | 2300 | I915_WRITE(RING_FAULT_REG(engine), |
828c7908 BW |
2301 | fault_reg & ~RING_FAULT_VALID); |
2302 | } | |
2303 | } | |
4a570db5 | 2304 | POSTING_READ(RING_FAULT_REG(&dev_priv->engine[RCS])); |
828c7908 BW |
2305 | } |
2306 | ||
91e56499 CW |
2307 | static void i915_ggtt_flush(struct drm_i915_private *dev_priv) |
2308 | { | |
2d1fe073 | 2309 | if (INTEL_INFO(dev_priv)->gen < 6) { |
91e56499 CW |
2310 | intel_gtt_chipset_flush(); |
2311 | } else { | |
2312 | I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); | |
2313 | POSTING_READ(GFX_FLSH_CNTL_GEN6); | |
2314 | } | |
2315 | } | |
2316 | ||
828c7908 BW |
2317 | void i915_gem_suspend_gtt_mappings(struct drm_device *dev) |
2318 | { | |
72e96d64 JL |
2319 | struct drm_i915_private *dev_priv = to_i915(dev); |
2320 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
828c7908 BW |
2321 | |
2322 | /* Don't bother messing with faults pre GEN6 as we have little | |
2323 | * documentation supporting that it's a good idea. | |
2324 | */ | |
2325 | if (INTEL_INFO(dev)->gen < 6) | |
2326 | return; | |
2327 | ||
2328 | i915_check_and_clear_faults(dev); | |
2329 | ||
72e96d64 JL |
2330 | ggtt->base.clear_range(&ggtt->base, ggtt->base.start, ggtt->base.total, |
2331 | true); | |
91e56499 CW |
2332 | |
2333 | i915_ggtt_flush(dev_priv); | |
828c7908 BW |
2334 | } |
2335 | ||
74163907 | 2336 | int i915_gem_gtt_prepare_object(struct drm_i915_gem_object *obj) |
7c2e6fdf | 2337 | { |
9da3da66 CW |
2338 | if (!dma_map_sg(&obj->base.dev->pdev->dev, |
2339 | obj->pages->sgl, obj->pages->nents, | |
2340 | PCI_DMA_BIDIRECTIONAL)) | |
2341 | return -ENOSPC; | |
2342 | ||
2343 | return 0; | |
7c2e6fdf DV |
2344 | } |
2345 | ||
2c642b07 | 2346 | static void gen8_set_pte(void __iomem *addr, gen8_pte_t pte) |
94ec8f61 BW |
2347 | { |
2348 | #ifdef writeq | |
2349 | writeq(pte, addr); | |
2350 | #else | |
2351 | iowrite32((u32)pte, addr); | |
2352 | iowrite32(pte >> 32, addr + 4); | |
2353 | #endif | |
2354 | } | |
2355 | ||
2356 | static void gen8_ggtt_insert_entries(struct i915_address_space *vm, | |
2357 | struct sg_table *st, | |
782f1495 | 2358 | uint64_t start, |
24f3a8cf | 2359 | enum i915_cache_level level, u32 unused) |
94ec8f61 | 2360 | { |
72e96d64 JL |
2361 | struct drm_i915_private *dev_priv = to_i915(vm->dev); |
2362 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
782f1495 | 2363 | unsigned first_entry = start >> PAGE_SHIFT; |
07749ef3 | 2364 | gen8_pte_t __iomem *gtt_entries = |
72e96d64 | 2365 | (gen8_pte_t __iomem *)ggtt->gsm + first_entry; |
94ec8f61 BW |
2366 | int i = 0; |
2367 | struct sg_page_iter sg_iter; | |
57007df7 | 2368 | dma_addr_t addr = 0; /* shut up gcc */ |
be69459a ID |
2369 | int rpm_atomic_seq; |
2370 | ||
2371 | rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); | |
94ec8f61 BW |
2372 | |
2373 | for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) { | |
2374 | addr = sg_dma_address(sg_iter.sg) + | |
2375 | (sg_iter.sg_pgoffset << PAGE_SHIFT); | |
2376 | gen8_set_pte(>t_entries[i], | |
2377 | gen8_pte_encode(addr, level, true)); | |
2378 | i++; | |
2379 | } | |
2380 | ||
2381 | /* | |
2382 | * XXX: This serves as a posting read to make sure that the PTE has | |
2383 | * actually been updated. There is some concern that even though | |
2384 | * registers and PTEs are within the same BAR that they are potentially | |
2385 | * of NUMA access patterns. Therefore, even with the way we assume | |
2386 | * hardware should work, we must keep this posting read for paranoia. | |
2387 | */ | |
2388 | if (i != 0) | |
2389 | WARN_ON(readq(>t_entries[i-1]) | |
2390 | != gen8_pte_encode(addr, level, true)); | |
2391 | ||
94ec8f61 BW |
2392 | /* This next bit makes the above posting read even more important. We |
2393 | * want to flush the TLBs only after we're certain all the PTE updates | |
2394 | * have finished. | |
2395 | */ | |
2396 | I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); | |
2397 | POSTING_READ(GFX_FLSH_CNTL_GEN6); | |
be69459a ID |
2398 | |
2399 | assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); | |
94ec8f61 BW |
2400 | } |
2401 | ||
c140330b CW |
2402 | struct insert_entries { |
2403 | struct i915_address_space *vm; | |
2404 | struct sg_table *st; | |
2405 | uint64_t start; | |
2406 | enum i915_cache_level level; | |
2407 | u32 flags; | |
2408 | }; | |
2409 | ||
2410 | static int gen8_ggtt_insert_entries__cb(void *_arg) | |
2411 | { | |
2412 | struct insert_entries *arg = _arg; | |
2413 | gen8_ggtt_insert_entries(arg->vm, arg->st, | |
2414 | arg->start, arg->level, arg->flags); | |
2415 | return 0; | |
2416 | } | |
2417 | ||
2418 | static void gen8_ggtt_insert_entries__BKL(struct i915_address_space *vm, | |
2419 | struct sg_table *st, | |
2420 | uint64_t start, | |
2421 | enum i915_cache_level level, | |
2422 | u32 flags) | |
2423 | { | |
2424 | struct insert_entries arg = { vm, st, start, level, flags }; | |
2425 | stop_machine(gen8_ggtt_insert_entries__cb, &arg, NULL); | |
2426 | } | |
2427 | ||
e76e9aeb BW |
2428 | /* |
2429 | * Binds an object into the global gtt with the specified cache level. The object | |
2430 | * will be accessible to the GPU via commands whose operands reference offsets | |
2431 | * within the global GTT as well as accessible by the GPU through the GMADR | |
2432 | * mapped BAR (dev_priv->mm.gtt->gtt). | |
2433 | */ | |
853ba5d2 | 2434 | static void gen6_ggtt_insert_entries(struct i915_address_space *vm, |
7faf1ab2 | 2435 | struct sg_table *st, |
782f1495 | 2436 | uint64_t start, |
24f3a8cf | 2437 | enum i915_cache_level level, u32 flags) |
e76e9aeb | 2438 | { |
72e96d64 JL |
2439 | struct drm_i915_private *dev_priv = to_i915(vm->dev); |
2440 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
782f1495 | 2441 | unsigned first_entry = start >> PAGE_SHIFT; |
07749ef3 | 2442 | gen6_pte_t __iomem *gtt_entries = |
72e96d64 | 2443 | (gen6_pte_t __iomem *)ggtt->gsm + first_entry; |
6e995e23 ID |
2444 | int i = 0; |
2445 | struct sg_page_iter sg_iter; | |
57007df7 | 2446 | dma_addr_t addr = 0; |
be69459a ID |
2447 | int rpm_atomic_seq; |
2448 | ||
2449 | rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); | |
e76e9aeb | 2450 | |
6e995e23 | 2451 | for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) { |
2db76d7c | 2452 | addr = sg_page_iter_dma_address(&sg_iter); |
24f3a8cf | 2453 | iowrite32(vm->pte_encode(addr, level, true, flags), >t_entries[i]); |
6e995e23 | 2454 | i++; |
e76e9aeb BW |
2455 | } |
2456 | ||
e76e9aeb BW |
2457 | /* XXX: This serves as a posting read to make sure that the PTE has |
2458 | * actually been updated. There is some concern that even though | |
2459 | * registers and PTEs are within the same BAR that they are potentially | |
2460 | * of NUMA access patterns. Therefore, even with the way we assume | |
2461 | * hardware should work, we must keep this posting read for paranoia. | |
2462 | */ | |
57007df7 PM |
2463 | if (i != 0) { |
2464 | unsigned long gtt = readl(>t_entries[i-1]); | |
2465 | WARN_ON(gtt != vm->pte_encode(addr, level, true, flags)); | |
2466 | } | |
0f9b91c7 BW |
2467 | |
2468 | /* This next bit makes the above posting read even more important. We | |
2469 | * want to flush the TLBs only after we're certain all the PTE updates | |
2470 | * have finished. | |
2471 | */ | |
2472 | I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); | |
2473 | POSTING_READ(GFX_FLSH_CNTL_GEN6); | |
be69459a ID |
2474 | |
2475 | assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); | |
e76e9aeb BW |
2476 | } |
2477 | ||
94ec8f61 | 2478 | static void gen8_ggtt_clear_range(struct i915_address_space *vm, |
782f1495 BW |
2479 | uint64_t start, |
2480 | uint64_t length, | |
94ec8f61 BW |
2481 | bool use_scratch) |
2482 | { | |
72e96d64 JL |
2483 | struct drm_i915_private *dev_priv = to_i915(vm->dev); |
2484 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
782f1495 BW |
2485 | unsigned first_entry = start >> PAGE_SHIFT; |
2486 | unsigned num_entries = length >> PAGE_SHIFT; | |
07749ef3 | 2487 | gen8_pte_t scratch_pte, __iomem *gtt_base = |
72e96d64 JL |
2488 | (gen8_pte_t __iomem *)ggtt->gsm + first_entry; |
2489 | const int max_entries = ggtt_total_entries(ggtt) - first_entry; | |
94ec8f61 | 2490 | int i; |
be69459a ID |
2491 | int rpm_atomic_seq; |
2492 | ||
2493 | rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); | |
94ec8f61 BW |
2494 | |
2495 | if (WARN(num_entries > max_entries, | |
2496 | "First entry = %d; Num entries = %d (max=%d)\n", | |
2497 | first_entry, num_entries, max_entries)) | |
2498 | num_entries = max_entries; | |
2499 | ||
c114f76a | 2500 | scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page), |
94ec8f61 BW |
2501 | I915_CACHE_LLC, |
2502 | use_scratch); | |
2503 | for (i = 0; i < num_entries; i++) | |
2504 | gen8_set_pte(>t_base[i], scratch_pte); | |
2505 | readl(gtt_base); | |
be69459a ID |
2506 | |
2507 | assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); | |
94ec8f61 BW |
2508 | } |
2509 | ||
853ba5d2 | 2510 | static void gen6_ggtt_clear_range(struct i915_address_space *vm, |
782f1495 BW |
2511 | uint64_t start, |
2512 | uint64_t length, | |
828c7908 | 2513 | bool use_scratch) |
7faf1ab2 | 2514 | { |
72e96d64 JL |
2515 | struct drm_i915_private *dev_priv = to_i915(vm->dev); |
2516 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
782f1495 BW |
2517 | unsigned first_entry = start >> PAGE_SHIFT; |
2518 | unsigned num_entries = length >> PAGE_SHIFT; | |
07749ef3 | 2519 | gen6_pte_t scratch_pte, __iomem *gtt_base = |
72e96d64 JL |
2520 | (gen6_pte_t __iomem *)ggtt->gsm + first_entry; |
2521 | const int max_entries = ggtt_total_entries(ggtt) - first_entry; | |
7faf1ab2 | 2522 | int i; |
be69459a ID |
2523 | int rpm_atomic_seq; |
2524 | ||
2525 | rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); | |
7faf1ab2 DV |
2526 | |
2527 | if (WARN(num_entries > max_entries, | |
2528 | "First entry = %d; Num entries = %d (max=%d)\n", | |
2529 | first_entry, num_entries, max_entries)) | |
2530 | num_entries = max_entries; | |
2531 | ||
c114f76a MK |
2532 | scratch_pte = vm->pte_encode(px_dma(vm->scratch_page), |
2533 | I915_CACHE_LLC, use_scratch, 0); | |
828c7908 | 2534 | |
7faf1ab2 DV |
2535 | for (i = 0; i < num_entries; i++) |
2536 | iowrite32(scratch_pte, >t_base[i]); | |
2537 | readl(gtt_base); | |
be69459a ID |
2538 | |
2539 | assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); | |
7faf1ab2 DV |
2540 | } |
2541 | ||
d369d2d9 DV |
2542 | static void i915_ggtt_insert_entries(struct i915_address_space *vm, |
2543 | struct sg_table *pages, | |
2544 | uint64_t start, | |
2545 | enum i915_cache_level cache_level, u32 unused) | |
7faf1ab2 | 2546 | { |
be69459a | 2547 | struct drm_i915_private *dev_priv = vm->dev->dev_private; |
7faf1ab2 DV |
2548 | unsigned int flags = (cache_level == I915_CACHE_NONE) ? |
2549 | AGP_USER_MEMORY : AGP_USER_CACHED_MEMORY; | |
be69459a ID |
2550 | int rpm_atomic_seq; |
2551 | ||
2552 | rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); | |
7faf1ab2 | 2553 | |
d369d2d9 | 2554 | intel_gtt_insert_sg_entries(pages, start >> PAGE_SHIFT, flags); |
0875546c | 2555 | |
be69459a ID |
2556 | assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); |
2557 | ||
7faf1ab2 DV |
2558 | } |
2559 | ||
853ba5d2 | 2560 | static void i915_ggtt_clear_range(struct i915_address_space *vm, |
782f1495 BW |
2561 | uint64_t start, |
2562 | uint64_t length, | |
828c7908 | 2563 | bool unused) |
7faf1ab2 | 2564 | { |
be69459a | 2565 | struct drm_i915_private *dev_priv = vm->dev->dev_private; |
782f1495 BW |
2566 | unsigned first_entry = start >> PAGE_SHIFT; |
2567 | unsigned num_entries = length >> PAGE_SHIFT; | |
be69459a ID |
2568 | int rpm_atomic_seq; |
2569 | ||
2570 | rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); | |
2571 | ||
7faf1ab2 | 2572 | intel_gtt_clear_range(first_entry, num_entries); |
be69459a ID |
2573 | |
2574 | assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); | |
7faf1ab2 DV |
2575 | } |
2576 | ||
70b9f6f8 DV |
2577 | static int ggtt_bind_vma(struct i915_vma *vma, |
2578 | enum i915_cache_level cache_level, | |
2579 | u32 flags) | |
0a878716 DV |
2580 | { |
2581 | struct drm_i915_gem_object *obj = vma->obj; | |
2582 | u32 pte_flags = 0; | |
2583 | int ret; | |
2584 | ||
2585 | ret = i915_get_ggtt_vma_pages(vma); | |
2586 | if (ret) | |
2587 | return ret; | |
2588 | ||
2589 | /* Currently applicable only to VLV */ | |
2590 | if (obj->gt_ro) | |
2591 | pte_flags |= PTE_READ_ONLY; | |
2592 | ||
2593 | vma->vm->insert_entries(vma->vm, vma->ggtt_view.pages, | |
2594 | vma->node.start, | |
2595 | cache_level, pte_flags); | |
2596 | ||
2597 | /* | |
2598 | * Without aliasing PPGTT there's no difference between | |
2599 | * GLOBAL/LOCAL_BIND, it's all the same ptes. Hence unconditionally | |
2600 | * upgrade to both bound if we bind either to avoid double-binding. | |
2601 | */ | |
2602 | vma->bound |= GLOBAL_BIND | LOCAL_BIND; | |
2603 | ||
2604 | return 0; | |
2605 | } | |
2606 | ||
2607 | static int aliasing_gtt_bind_vma(struct i915_vma *vma, | |
2608 | enum i915_cache_level cache_level, | |
2609 | u32 flags) | |
d5bd1449 | 2610 | { |
321d178e | 2611 | u32 pte_flags; |
70b9f6f8 DV |
2612 | int ret; |
2613 | ||
2614 | ret = i915_get_ggtt_vma_pages(vma); | |
2615 | if (ret) | |
2616 | return ret; | |
7faf1ab2 | 2617 | |
24f3a8cf | 2618 | /* Currently applicable only to VLV */ |
321d178e CW |
2619 | pte_flags = 0; |
2620 | if (vma->obj->gt_ro) | |
f329f5f6 | 2621 | pte_flags |= PTE_READ_ONLY; |
24f3a8cf | 2622 | |
ec7adb6e | 2623 | |
0a878716 | 2624 | if (flags & GLOBAL_BIND) { |
321d178e CW |
2625 | vma->vm->insert_entries(vma->vm, |
2626 | vma->ggtt_view.pages, | |
0875546c DV |
2627 | vma->node.start, |
2628 | cache_level, pte_flags); | |
6f65e29a | 2629 | } |
d5bd1449 | 2630 | |
0a878716 | 2631 | if (flags & LOCAL_BIND) { |
321d178e CW |
2632 | struct i915_hw_ppgtt *appgtt = |
2633 | to_i915(vma->vm->dev)->mm.aliasing_ppgtt; | |
2634 | appgtt->base.insert_entries(&appgtt->base, | |
2635 | vma->ggtt_view.pages, | |
782f1495 | 2636 | vma->node.start, |
f329f5f6 | 2637 | cache_level, pte_flags); |
6f65e29a | 2638 | } |
70b9f6f8 DV |
2639 | |
2640 | return 0; | |
d5bd1449 CW |
2641 | } |
2642 | ||
6f65e29a | 2643 | static void ggtt_unbind_vma(struct i915_vma *vma) |
74163907 | 2644 | { |
6f65e29a | 2645 | struct drm_device *dev = vma->vm->dev; |
7faf1ab2 | 2646 | struct drm_i915_private *dev_priv = dev->dev_private; |
6f65e29a | 2647 | struct drm_i915_gem_object *obj = vma->obj; |
06615ee5 JL |
2648 | const uint64_t size = min_t(uint64_t, |
2649 | obj->base.size, | |
2650 | vma->node.size); | |
6f65e29a | 2651 | |
aff43766 | 2652 | if (vma->bound & GLOBAL_BIND) { |
782f1495 BW |
2653 | vma->vm->clear_range(vma->vm, |
2654 | vma->node.start, | |
06615ee5 | 2655 | size, |
6f65e29a | 2656 | true); |
6f65e29a | 2657 | } |
74898d7e | 2658 | |
0875546c | 2659 | if (dev_priv->mm.aliasing_ppgtt && vma->bound & LOCAL_BIND) { |
6f65e29a | 2660 | struct i915_hw_ppgtt *appgtt = dev_priv->mm.aliasing_ppgtt; |
06615ee5 | 2661 | |
6f65e29a | 2662 | appgtt->base.clear_range(&appgtt->base, |
782f1495 | 2663 | vma->node.start, |
06615ee5 | 2664 | size, |
6f65e29a | 2665 | true); |
6f65e29a | 2666 | } |
74163907 DV |
2667 | } |
2668 | ||
2669 | void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj) | |
7c2e6fdf | 2670 | { |
5c042287 BW |
2671 | struct drm_device *dev = obj->base.dev; |
2672 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2673 | bool interruptible; | |
2674 | ||
2675 | interruptible = do_idling(dev_priv); | |
2676 | ||
5ec5b516 ID |
2677 | dma_unmap_sg(&dev->pdev->dev, obj->pages->sgl, obj->pages->nents, |
2678 | PCI_DMA_BIDIRECTIONAL); | |
5c042287 BW |
2679 | |
2680 | undo_idling(dev_priv, interruptible); | |
7c2e6fdf | 2681 | } |
644ec02b | 2682 | |
42d6ab48 CW |
2683 | static void i915_gtt_color_adjust(struct drm_mm_node *node, |
2684 | unsigned long color, | |
440fd528 TR |
2685 | u64 *start, |
2686 | u64 *end) | |
42d6ab48 CW |
2687 | { |
2688 | if (node->color != color) | |
2689 | *start += 4096; | |
2690 | ||
2691 | if (!list_empty(&node->node_list)) { | |
2692 | node = list_entry(node->node_list.next, | |
2693 | struct drm_mm_node, | |
2694 | node_list); | |
2695 | if (node->allocated && node->color != color) | |
2696 | *end -= 4096; | |
2697 | } | |
2698 | } | |
fbe5d36e | 2699 | |
f548c0e9 | 2700 | static int i915_gem_setup_global_gtt(struct drm_device *dev, |
088e0df4 MT |
2701 | u64 start, |
2702 | u64 mappable_end, | |
2703 | u64 end) | |
644ec02b | 2704 | { |
e78891ca BW |
2705 | /* Let GEM Manage all of the aperture. |
2706 | * | |
2707 | * However, leave one page at the end still bound to the scratch page. | |
2708 | * There are a number of places where the hardware apparently prefetches | |
2709 | * past the end of the object, and we've seen multiple hangs with the | |
2710 | * GPU head pointer stuck in a batchbuffer bound at the last page of the | |
2711 | * aperture. One page should be enough to keep any prefetching inside | |
2712 | * of the aperture. | |
2713 | */ | |
72e96d64 JL |
2714 | struct drm_i915_private *dev_priv = to_i915(dev); |
2715 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
ed2f3452 CW |
2716 | struct drm_mm_node *entry; |
2717 | struct drm_i915_gem_object *obj; | |
2718 | unsigned long hole_start, hole_end; | |
fa76da34 | 2719 | int ret; |
644ec02b | 2720 | |
35451cb6 BW |
2721 | BUG_ON(mappable_end > end); |
2722 | ||
72e96d64 | 2723 | ggtt->base.start = start; |
5dda8fa3 | 2724 | |
a2cad9df MW |
2725 | /* Subtract the guard page before address space initialization to |
2726 | * shrink the range used by drm_mm */ | |
72e96d64 JL |
2727 | ggtt->base.total = end - start - PAGE_SIZE; |
2728 | i915_address_space_init(&ggtt->base, dev_priv); | |
2729 | ggtt->base.total += PAGE_SIZE; | |
5dda8fa3 YZ |
2730 | |
2731 | if (intel_vgpu_active(dev)) { | |
2732 | ret = intel_vgt_balloon(dev); | |
2733 | if (ret) | |
2734 | return ret; | |
2735 | } | |
2736 | ||
42d6ab48 | 2737 | if (!HAS_LLC(dev)) |
72e96d64 | 2738 | ggtt->base.mm.color_adjust = i915_gtt_color_adjust; |
644ec02b | 2739 | |
ed2f3452 | 2740 | /* Mark any preallocated objects as occupied */ |
35c20a60 | 2741 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { |
72e96d64 | 2742 | struct i915_vma *vma = i915_gem_obj_to_vma(obj, &ggtt->base); |
fa76da34 | 2743 | |
088e0df4 | 2744 | DRM_DEBUG_KMS("reserving preallocated space: %llx + %zx\n", |
c6cfb325 BW |
2745 | i915_gem_obj_ggtt_offset(obj), obj->base.size); |
2746 | ||
2747 | WARN_ON(i915_gem_obj_ggtt_bound(obj)); | |
72e96d64 | 2748 | ret = drm_mm_reserve_node(&ggtt->base.mm, &vma->node); |
6c5566a8 DV |
2749 | if (ret) { |
2750 | DRM_DEBUG_KMS("Reservation failed: %i\n", ret); | |
2751 | return ret; | |
2752 | } | |
aff43766 | 2753 | vma->bound |= GLOBAL_BIND; |
d0710abb | 2754 | __i915_vma_set_map_and_fenceable(vma); |
72e96d64 | 2755 | list_add_tail(&vma->vm_link, &ggtt->base.inactive_list); |
ed2f3452 CW |
2756 | } |
2757 | ||
ed2f3452 | 2758 | /* Clear any non-preallocated blocks */ |
72e96d64 | 2759 | drm_mm_for_each_hole(entry, &ggtt->base.mm, hole_start, hole_end) { |
ed2f3452 CW |
2760 | DRM_DEBUG_KMS("clearing unused GTT space: [%lx, %lx]\n", |
2761 | hole_start, hole_end); | |
72e96d64 | 2762 | ggtt->base.clear_range(&ggtt->base, hole_start, |
782f1495 | 2763 | hole_end - hole_start, true); |
ed2f3452 CW |
2764 | } |
2765 | ||
2766 | /* And finally clear the reserved guard page */ | |
72e96d64 | 2767 | ggtt->base.clear_range(&ggtt->base, end - PAGE_SIZE, PAGE_SIZE, true); |
6c5566a8 | 2768 | |
fa76da34 DV |
2769 | if (USES_PPGTT(dev) && !USES_FULL_PPGTT(dev)) { |
2770 | struct i915_hw_ppgtt *ppgtt; | |
2771 | ||
2772 | ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL); | |
2773 | if (!ppgtt) | |
2774 | return -ENOMEM; | |
2775 | ||
5c5f6457 DV |
2776 | ret = __hw_ppgtt_init(dev, ppgtt); |
2777 | if (ret) { | |
2778 | ppgtt->base.cleanup(&ppgtt->base); | |
2779 | kfree(ppgtt); | |
2780 | return ret; | |
2781 | } | |
2782 | ||
2783 | if (ppgtt->base.allocate_va_range) | |
2784 | ret = ppgtt->base.allocate_va_range(&ppgtt->base, 0, | |
2785 | ppgtt->base.total); | |
4933d519 | 2786 | if (ret) { |
061dd493 | 2787 | ppgtt->base.cleanup(&ppgtt->base); |
4933d519 | 2788 | kfree(ppgtt); |
fa76da34 | 2789 | return ret; |
4933d519 | 2790 | } |
fa76da34 | 2791 | |
5c5f6457 DV |
2792 | ppgtt->base.clear_range(&ppgtt->base, |
2793 | ppgtt->base.start, | |
2794 | ppgtt->base.total, | |
2795 | true); | |
2796 | ||
fa76da34 | 2797 | dev_priv->mm.aliasing_ppgtt = ppgtt; |
72e96d64 JL |
2798 | WARN_ON(ggtt->base.bind_vma != ggtt_bind_vma); |
2799 | ggtt->base.bind_vma = aliasing_gtt_bind_vma; | |
fa76da34 DV |
2800 | } |
2801 | ||
6c5566a8 | 2802 | return 0; |
e76e9aeb BW |
2803 | } |
2804 | ||
d85489d3 JL |
2805 | /** |
2806 | * i915_gem_init_ggtt - Initialize GEM for Global GTT | |
2807 | * @dev: DRM device | |
2808 | */ | |
2809 | void i915_gem_init_ggtt(struct drm_device *dev) | |
d7e5008f | 2810 | { |
72e96d64 JL |
2811 | struct drm_i915_private *dev_priv = to_i915(dev); |
2812 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
d7e5008f | 2813 | |
72e96d64 | 2814 | i915_gem_setup_global_gtt(dev, 0, ggtt->mappable_end, ggtt->base.total); |
e76e9aeb BW |
2815 | } |
2816 | ||
d85489d3 JL |
2817 | /** |
2818 | * i915_ggtt_cleanup_hw - Clean up GGTT hardware initialization | |
2819 | * @dev: DRM device | |
2820 | */ | |
2821 | void i915_ggtt_cleanup_hw(struct drm_device *dev) | |
90d0a0e8 | 2822 | { |
72e96d64 JL |
2823 | struct drm_i915_private *dev_priv = to_i915(dev); |
2824 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
90d0a0e8 | 2825 | |
70e32544 DV |
2826 | if (dev_priv->mm.aliasing_ppgtt) { |
2827 | struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt; | |
2828 | ||
2829 | ppgtt->base.cleanup(&ppgtt->base); | |
2830 | } | |
2831 | ||
a4eba47b ID |
2832 | i915_gem_cleanup_stolen(dev); |
2833 | ||
72e96d64 | 2834 | if (drm_mm_initialized(&ggtt->base.mm)) { |
5dda8fa3 YZ |
2835 | if (intel_vgpu_active(dev)) |
2836 | intel_vgt_deballoon(); | |
2837 | ||
72e96d64 JL |
2838 | drm_mm_takedown(&ggtt->base.mm); |
2839 | list_del(&ggtt->base.global_link); | |
90d0a0e8 DV |
2840 | } |
2841 | ||
72e96d64 | 2842 | ggtt->base.cleanup(&ggtt->base); |
90d0a0e8 | 2843 | } |
70e32544 | 2844 | |
2c642b07 | 2845 | static unsigned int gen6_get_total_gtt_size(u16 snb_gmch_ctl) |
e76e9aeb BW |
2846 | { |
2847 | snb_gmch_ctl >>= SNB_GMCH_GGMS_SHIFT; | |
2848 | snb_gmch_ctl &= SNB_GMCH_GGMS_MASK; | |
2849 | return snb_gmch_ctl << 20; | |
2850 | } | |
2851 | ||
2c642b07 | 2852 | static unsigned int gen8_get_total_gtt_size(u16 bdw_gmch_ctl) |
9459d252 BW |
2853 | { |
2854 | bdw_gmch_ctl >>= BDW_GMCH_GGMS_SHIFT; | |
2855 | bdw_gmch_ctl &= BDW_GMCH_GGMS_MASK; | |
2856 | if (bdw_gmch_ctl) | |
2857 | bdw_gmch_ctl = 1 << bdw_gmch_ctl; | |
562d55d9 BW |
2858 | |
2859 | #ifdef CONFIG_X86_32 | |
2860 | /* Limit 32b platforms to a 2GB GGTT: 4 << 20 / pte size * PAGE_SIZE */ | |
2861 | if (bdw_gmch_ctl > 4) | |
2862 | bdw_gmch_ctl = 4; | |
2863 | #endif | |
2864 | ||
9459d252 BW |
2865 | return bdw_gmch_ctl << 20; |
2866 | } | |
2867 | ||
2c642b07 | 2868 | static unsigned int chv_get_total_gtt_size(u16 gmch_ctrl) |
d7f25f23 DL |
2869 | { |
2870 | gmch_ctrl >>= SNB_GMCH_GGMS_SHIFT; | |
2871 | gmch_ctrl &= SNB_GMCH_GGMS_MASK; | |
2872 | ||
2873 | if (gmch_ctrl) | |
2874 | return 1 << (20 + gmch_ctrl); | |
2875 | ||
2876 | return 0; | |
2877 | } | |
2878 | ||
2c642b07 | 2879 | static size_t gen6_get_stolen_size(u16 snb_gmch_ctl) |
e76e9aeb BW |
2880 | { |
2881 | snb_gmch_ctl >>= SNB_GMCH_GMS_SHIFT; | |
2882 | snb_gmch_ctl &= SNB_GMCH_GMS_MASK; | |
2883 | return snb_gmch_ctl << 25; /* 32 MB units */ | |
2884 | } | |
2885 | ||
2c642b07 | 2886 | static size_t gen8_get_stolen_size(u16 bdw_gmch_ctl) |
9459d252 BW |
2887 | { |
2888 | bdw_gmch_ctl >>= BDW_GMCH_GMS_SHIFT; | |
2889 | bdw_gmch_ctl &= BDW_GMCH_GMS_MASK; | |
2890 | return bdw_gmch_ctl << 25; /* 32 MB units */ | |
2891 | } | |
2892 | ||
d7f25f23 DL |
2893 | static size_t chv_get_stolen_size(u16 gmch_ctrl) |
2894 | { | |
2895 | gmch_ctrl >>= SNB_GMCH_GMS_SHIFT; | |
2896 | gmch_ctrl &= SNB_GMCH_GMS_MASK; | |
2897 | ||
2898 | /* | |
2899 | * 0x0 to 0x10: 32MB increments starting at 0MB | |
2900 | * 0x11 to 0x16: 4MB increments starting at 8MB | |
2901 | * 0x17 to 0x1d: 4MB increments start at 36MB | |
2902 | */ | |
2903 | if (gmch_ctrl < 0x11) | |
2904 | return gmch_ctrl << 25; | |
2905 | else if (gmch_ctrl < 0x17) | |
2906 | return (gmch_ctrl - 0x11 + 2) << 22; | |
2907 | else | |
2908 | return (gmch_ctrl - 0x17 + 9) << 22; | |
2909 | } | |
2910 | ||
66375014 DL |
2911 | static size_t gen9_get_stolen_size(u16 gen9_gmch_ctl) |
2912 | { | |
2913 | gen9_gmch_ctl >>= BDW_GMCH_GMS_SHIFT; | |
2914 | gen9_gmch_ctl &= BDW_GMCH_GMS_MASK; | |
2915 | ||
2916 | if (gen9_gmch_ctl < 0xf0) | |
2917 | return gen9_gmch_ctl << 25; /* 32 MB units */ | |
2918 | else | |
2919 | /* 4MB increments starting at 0xf0 for 4MB */ | |
2920 | return (gen9_gmch_ctl - 0xf0 + 1) << 22; | |
2921 | } | |
2922 | ||
63340133 BW |
2923 | static int ggtt_probe_common(struct drm_device *dev, |
2924 | size_t gtt_size) | |
2925 | { | |
72e96d64 JL |
2926 | struct drm_i915_private *dev_priv = to_i915(dev); |
2927 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
4ad2af1e | 2928 | struct i915_page_scratch *scratch_page; |
72e96d64 | 2929 | phys_addr_t ggtt_phys_addr; |
63340133 BW |
2930 | |
2931 | /* For Modern GENs the PTEs and register space are split in the BAR */ | |
72e96d64 JL |
2932 | ggtt_phys_addr = pci_resource_start(dev->pdev, 0) + |
2933 | (pci_resource_len(dev->pdev, 0) / 2); | |
63340133 | 2934 | |
2a073f89 ID |
2935 | /* |
2936 | * On BXT writes larger than 64 bit to the GTT pagetable range will be | |
2937 | * dropped. For WC mappings in general we have 64 byte burst writes | |
2938 | * when the WC buffer is flushed, so we can't use it, but have to | |
2939 | * resort to an uncached mapping. The WC issue is easily caught by the | |
2940 | * readback check when writing GTT PTE entries. | |
2941 | */ | |
2942 | if (IS_BROXTON(dev)) | |
72e96d64 | 2943 | ggtt->gsm = ioremap_nocache(ggtt_phys_addr, gtt_size); |
2a073f89 | 2944 | else |
72e96d64 JL |
2945 | ggtt->gsm = ioremap_wc(ggtt_phys_addr, gtt_size); |
2946 | if (!ggtt->gsm) { | |
63340133 BW |
2947 | DRM_ERROR("Failed to map the gtt page table\n"); |
2948 | return -ENOMEM; | |
2949 | } | |
2950 | ||
4ad2af1e MK |
2951 | scratch_page = alloc_scratch_page(dev); |
2952 | if (IS_ERR(scratch_page)) { | |
63340133 BW |
2953 | DRM_ERROR("Scratch setup failed\n"); |
2954 | /* iounmap will also get called at remove, but meh */ | |
72e96d64 | 2955 | iounmap(ggtt->gsm); |
4ad2af1e | 2956 | return PTR_ERR(scratch_page); |
63340133 BW |
2957 | } |
2958 | ||
72e96d64 | 2959 | ggtt->base.scratch_page = scratch_page; |
4ad2af1e MK |
2960 | |
2961 | return 0; | |
63340133 BW |
2962 | } |
2963 | ||
fbe5d36e BW |
2964 | /* The GGTT and PPGTT need a private PPAT setup in order to handle cacheability |
2965 | * bits. When using advanced contexts each context stores its own PAT, but | |
2966 | * writing this data shouldn't be harmful even in those cases. */ | |
ee0ce478 | 2967 | static void bdw_setup_private_ppat(struct drm_i915_private *dev_priv) |
fbe5d36e | 2968 | { |
fbe5d36e BW |
2969 | uint64_t pat; |
2970 | ||
2971 | pat = GEN8_PPAT(0, GEN8_PPAT_WB | GEN8_PPAT_LLC) | /* for normal objects, no eLLC */ | |
2972 | GEN8_PPAT(1, GEN8_PPAT_WC | GEN8_PPAT_LLCELLC) | /* for something pointing to ptes? */ | |
2973 | GEN8_PPAT(2, GEN8_PPAT_WT | GEN8_PPAT_LLCELLC) | /* for scanout with eLLC */ | |
2974 | GEN8_PPAT(3, GEN8_PPAT_UC) | /* Uncached objects, mostly for scanout */ | |
2975 | GEN8_PPAT(4, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0)) | | |
2976 | GEN8_PPAT(5, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1)) | | |
2977 | GEN8_PPAT(6, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2)) | | |
2978 | GEN8_PPAT(7, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3)); | |
2979 | ||
2d1fe073 | 2980 | if (!USES_PPGTT(dev_priv)) |
d6a8b72e RV |
2981 | /* Spec: "For GGTT, there is NO pat_sel[2:0] from the entry, |
2982 | * so RTL will always use the value corresponding to | |
2983 | * pat_sel = 000". | |
2984 | * So let's disable cache for GGTT to avoid screen corruptions. | |
2985 | * MOCS still can be used though. | |
2986 | * - System agent ggtt writes (i.e. cpu gtt mmaps) already work | |
2987 | * before this patch, i.e. the same uncached + snooping access | |
2988 | * like on gen6/7 seems to be in effect. | |
2989 | * - So this just fixes blitter/render access. Again it looks | |
2990 | * like it's not just uncached access, but uncached + snooping. | |
2991 | * So we can still hold onto all our assumptions wrt cpu | |
2992 | * clflushing on LLC machines. | |
2993 | */ | |
2994 | pat = GEN8_PPAT(0, GEN8_PPAT_UC); | |
2995 | ||
fbe5d36e BW |
2996 | /* XXX: spec defines this as 2 distinct registers. It's unclear if a 64b |
2997 | * write would work. */ | |
7e435ad2 VS |
2998 | I915_WRITE(GEN8_PRIVATE_PAT_LO, pat); |
2999 | I915_WRITE(GEN8_PRIVATE_PAT_HI, pat >> 32); | |
fbe5d36e BW |
3000 | } |
3001 | ||
ee0ce478 VS |
3002 | static void chv_setup_private_ppat(struct drm_i915_private *dev_priv) |
3003 | { | |
3004 | uint64_t pat; | |
3005 | ||
3006 | /* | |
3007 | * Map WB on BDW to snooped on CHV. | |
3008 | * | |
3009 | * Only the snoop bit has meaning for CHV, the rest is | |
3010 | * ignored. | |
3011 | * | |
cf3d262e VS |
3012 | * The hardware will never snoop for certain types of accesses: |
3013 | * - CPU GTT (GMADR->GGTT->no snoop->memory) | |
3014 | * - PPGTT page tables | |
3015 | * - some other special cycles | |
3016 | * | |
3017 | * As with BDW, we also need to consider the following for GT accesses: | |
3018 | * "For GGTT, there is NO pat_sel[2:0] from the entry, | |
3019 | * so RTL will always use the value corresponding to | |
3020 | * pat_sel = 000". | |
3021 | * Which means we must set the snoop bit in PAT entry 0 | |
3022 | * in order to keep the global status page working. | |
ee0ce478 VS |
3023 | */ |
3024 | pat = GEN8_PPAT(0, CHV_PPAT_SNOOP) | | |
3025 | GEN8_PPAT(1, 0) | | |
3026 | GEN8_PPAT(2, 0) | | |
3027 | GEN8_PPAT(3, 0) | | |
3028 | GEN8_PPAT(4, CHV_PPAT_SNOOP) | | |
3029 | GEN8_PPAT(5, CHV_PPAT_SNOOP) | | |
3030 | GEN8_PPAT(6, CHV_PPAT_SNOOP) | | |
3031 | GEN8_PPAT(7, CHV_PPAT_SNOOP); | |
3032 | ||
7e435ad2 VS |
3033 | I915_WRITE(GEN8_PRIVATE_PAT_LO, pat); |
3034 | I915_WRITE(GEN8_PRIVATE_PAT_HI, pat >> 32); | |
ee0ce478 VS |
3035 | } |
3036 | ||
d507d735 | 3037 | static int gen8_gmch_probe(struct i915_ggtt *ggtt) |
63340133 | 3038 | { |
d507d735 | 3039 | struct drm_device *dev = ggtt->base.dev; |
72e96d64 | 3040 | struct drm_i915_private *dev_priv = to_i915(dev); |
63340133 BW |
3041 | u16 snb_gmch_ctl; |
3042 | int ret; | |
3043 | ||
3044 | /* TODO: We're not aware of mappable constraints on gen8 yet */ | |
d507d735 JL |
3045 | ggtt->mappable_base = pci_resource_start(dev->pdev, 2); |
3046 | ggtt->mappable_end = pci_resource_len(dev->pdev, 2); | |
63340133 BW |
3047 | |
3048 | if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(39))) | |
3049 | pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(39)); | |
3050 | ||
3051 | pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl); | |
3052 | ||
66375014 | 3053 | if (INTEL_INFO(dev)->gen >= 9) { |
d507d735 JL |
3054 | ggtt->stolen_size = gen9_get_stolen_size(snb_gmch_ctl); |
3055 | ggtt->size = gen8_get_total_gtt_size(snb_gmch_ctl); | |
66375014 | 3056 | } else if (IS_CHERRYVIEW(dev)) { |
d507d735 JL |
3057 | ggtt->stolen_size = chv_get_stolen_size(snb_gmch_ctl); |
3058 | ggtt->size = chv_get_total_gtt_size(snb_gmch_ctl); | |
d7f25f23 | 3059 | } else { |
d507d735 JL |
3060 | ggtt->stolen_size = gen8_get_stolen_size(snb_gmch_ctl); |
3061 | ggtt->size = gen8_get_total_gtt_size(snb_gmch_ctl); | |
d7f25f23 | 3062 | } |
63340133 | 3063 | |
d507d735 | 3064 | ggtt->base.total = (ggtt->size / sizeof(gen8_pte_t)) << PAGE_SHIFT; |
63340133 | 3065 | |
5a4e33a3 | 3066 | if (IS_CHERRYVIEW(dev) || IS_BROXTON(dev)) |
ee0ce478 VS |
3067 | chv_setup_private_ppat(dev_priv); |
3068 | else | |
3069 | bdw_setup_private_ppat(dev_priv); | |
fbe5d36e | 3070 | |
d507d735 | 3071 | ret = ggtt_probe_common(dev, ggtt->size); |
63340133 | 3072 | |
d507d735 | 3073 | ggtt->base.clear_range = gen8_ggtt_clear_range; |
c140330b | 3074 | if (IS_CHERRYVIEW(dev_priv)) |
d507d735 JL |
3075 | ggtt->base.insert_entries = gen8_ggtt_insert_entries__BKL; |
3076 | else | |
3077 | ggtt->base.insert_entries = gen8_ggtt_insert_entries; | |
3078 | ggtt->base.bind_vma = ggtt_bind_vma; | |
3079 | ggtt->base.unbind_vma = ggtt_unbind_vma; | |
3080 | ||
63340133 BW |
3081 | return ret; |
3082 | } | |
3083 | ||
d507d735 | 3084 | static int gen6_gmch_probe(struct i915_ggtt *ggtt) |
e76e9aeb | 3085 | { |
d507d735 | 3086 | struct drm_device *dev = ggtt->base.dev; |
e76e9aeb | 3087 | u16 snb_gmch_ctl; |
e76e9aeb BW |
3088 | int ret; |
3089 | ||
d507d735 JL |
3090 | ggtt->mappable_base = pci_resource_start(dev->pdev, 2); |
3091 | ggtt->mappable_end = pci_resource_len(dev->pdev, 2); | |
41907ddc | 3092 | |
baa09f5f BW |
3093 | /* 64/512MB is the current min/max we actually know of, but this is just |
3094 | * a coarse sanity check. | |
e76e9aeb | 3095 | */ |
d507d735 JL |
3096 | if ((ggtt->mappable_end < (64<<20) || (ggtt->mappable_end > (512<<20)))) { |
3097 | DRM_ERROR("Unknown GMADR size (%llx)\n", ggtt->mappable_end); | |
baa09f5f | 3098 | return -ENXIO; |
e76e9aeb BW |
3099 | } |
3100 | ||
e76e9aeb BW |
3101 | if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(40))) |
3102 | pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(40)); | |
e76e9aeb | 3103 | pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl); |
e76e9aeb | 3104 | |
d507d735 JL |
3105 | ggtt->stolen_size = gen6_get_stolen_size(snb_gmch_ctl); |
3106 | ggtt->size = gen6_get_total_gtt_size(snb_gmch_ctl); | |
3107 | ggtt->base.total = (ggtt->size / sizeof(gen6_pte_t)) << PAGE_SHIFT; | |
e76e9aeb | 3108 | |
d507d735 | 3109 | ret = ggtt_probe_common(dev, ggtt->size); |
e76e9aeb | 3110 | |
d507d735 JL |
3111 | ggtt->base.clear_range = gen6_ggtt_clear_range; |
3112 | ggtt->base.insert_entries = gen6_ggtt_insert_entries; | |
3113 | ggtt->base.bind_vma = ggtt_bind_vma; | |
3114 | ggtt->base.unbind_vma = ggtt_unbind_vma; | |
7faf1ab2 | 3115 | |
e76e9aeb BW |
3116 | return ret; |
3117 | } | |
3118 | ||
853ba5d2 | 3119 | static void gen6_gmch_remove(struct i915_address_space *vm) |
e76e9aeb | 3120 | { |
62106b4f | 3121 | struct i915_ggtt *ggtt = container_of(vm, struct i915_ggtt, base); |
853ba5d2 | 3122 | |
62106b4f | 3123 | iounmap(ggtt->gsm); |
4ad2af1e | 3124 | free_scratch_page(vm->dev, vm->scratch_page); |
644ec02b | 3125 | } |
baa09f5f | 3126 | |
d507d735 | 3127 | static int i915_gmch_probe(struct i915_ggtt *ggtt) |
baa09f5f | 3128 | { |
d507d735 | 3129 | struct drm_device *dev = ggtt->base.dev; |
72e96d64 | 3130 | struct drm_i915_private *dev_priv = to_i915(dev); |
baa09f5f BW |
3131 | int ret; |
3132 | ||
baa09f5f BW |
3133 | ret = intel_gmch_probe(dev_priv->bridge_dev, dev_priv->dev->pdev, NULL); |
3134 | if (!ret) { | |
3135 | DRM_ERROR("failed to set up gmch\n"); | |
3136 | return -EIO; | |
3137 | } | |
3138 | ||
d507d735 JL |
3139 | intel_gtt_get(&ggtt->base.total, &ggtt->stolen_size, |
3140 | &ggtt->mappable_base, &ggtt->mappable_end); | |
baa09f5f | 3141 | |
d507d735 JL |
3142 | ggtt->do_idle_maps = needs_idle_maps(dev_priv->dev); |
3143 | ggtt->base.insert_entries = i915_ggtt_insert_entries; | |
3144 | ggtt->base.clear_range = i915_ggtt_clear_range; | |
3145 | ggtt->base.bind_vma = ggtt_bind_vma; | |
3146 | ggtt->base.unbind_vma = ggtt_unbind_vma; | |
baa09f5f | 3147 | |
d507d735 | 3148 | if (unlikely(ggtt->do_idle_maps)) |
c0a7f818 CW |
3149 | DRM_INFO("applying Ironlake quirks for intel_iommu\n"); |
3150 | ||
baa09f5f BW |
3151 | return 0; |
3152 | } | |
3153 | ||
853ba5d2 | 3154 | static void i915_gmch_remove(struct i915_address_space *vm) |
baa09f5f BW |
3155 | { |
3156 | intel_gmch_remove(); | |
3157 | } | |
3158 | ||
d85489d3 JL |
3159 | /** |
3160 | * i915_ggtt_init_hw - Initialize GGTT hardware | |
3161 | * @dev: DRM device | |
3162 | */ | |
3163 | int i915_ggtt_init_hw(struct drm_device *dev) | |
baa09f5f | 3164 | { |
72e96d64 | 3165 | struct drm_i915_private *dev_priv = to_i915(dev); |
62106b4f | 3166 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
baa09f5f BW |
3167 | int ret; |
3168 | ||
baa09f5f | 3169 | if (INTEL_INFO(dev)->gen <= 5) { |
62106b4f JL |
3170 | ggtt->probe = i915_gmch_probe; |
3171 | ggtt->base.cleanup = i915_gmch_remove; | |
63340133 | 3172 | } else if (INTEL_INFO(dev)->gen < 8) { |
62106b4f JL |
3173 | ggtt->probe = gen6_gmch_probe; |
3174 | ggtt->base.cleanup = gen6_gmch_remove; | |
4d15c145 | 3175 | if (IS_HASWELL(dev) && dev_priv->ellc_size) |
62106b4f | 3176 | ggtt->base.pte_encode = iris_pte_encode; |
4d15c145 | 3177 | else if (IS_HASWELL(dev)) |
62106b4f | 3178 | ggtt->base.pte_encode = hsw_pte_encode; |
b2f21b4d | 3179 | else if (IS_VALLEYVIEW(dev)) |
62106b4f | 3180 | ggtt->base.pte_encode = byt_pte_encode; |
350ec881 | 3181 | else if (INTEL_INFO(dev)->gen >= 7) |
62106b4f | 3182 | ggtt->base.pte_encode = ivb_pte_encode; |
b2f21b4d | 3183 | else |
62106b4f | 3184 | ggtt->base.pte_encode = snb_pte_encode; |
63340133 | 3185 | } else { |
62106b4f JL |
3186 | ggtt->probe = gen8_gmch_probe; |
3187 | ggtt->base.cleanup = gen6_gmch_remove; | |
baa09f5f BW |
3188 | } |
3189 | ||
62106b4f JL |
3190 | ggtt->base.dev = dev; |
3191 | ggtt->base.is_ggtt = true; | |
c114f76a | 3192 | |
d507d735 | 3193 | ret = ggtt->probe(ggtt); |
a54c0c27 | 3194 | if (ret) |
baa09f5f | 3195 | return ret; |
baa09f5f | 3196 | |
c890e2d5 CW |
3197 | if ((ggtt->base.total - 1) >> 32) { |
3198 | DRM_ERROR("We never expected a Global GTT with more than 32bits" | |
3199 | "of address space! Found %lldM!\n", | |
3200 | ggtt->base.total >> 20); | |
3201 | ggtt->base.total = 1ULL << 32; | |
3202 | ggtt->mappable_end = min(ggtt->mappable_end, ggtt->base.total); | |
3203 | } | |
3204 | ||
a4eba47b ID |
3205 | /* |
3206 | * Initialise stolen early so that we may reserve preallocated | |
3207 | * objects for the BIOS to KMS transition. | |
3208 | */ | |
3209 | ret = i915_gem_init_stolen(dev); | |
3210 | if (ret) | |
3211 | goto out_gtt_cleanup; | |
3212 | ||
baa09f5f | 3213 | /* GMADR is the PCI mmio aperture into the global GTT. */ |
c44ef60e | 3214 | DRM_INFO("Memory usable by graphics device = %lluM\n", |
62106b4f JL |
3215 | ggtt->base.total >> 20); |
3216 | DRM_DEBUG_DRIVER("GMADR size = %lldM\n", ggtt->mappable_end >> 20); | |
3217 | DRM_DEBUG_DRIVER("GTT stolen size = %zdM\n", ggtt->stolen_size >> 20); | |
5db6c735 DV |
3218 | #ifdef CONFIG_INTEL_IOMMU |
3219 | if (intel_iommu_gfx_mapped) | |
3220 | DRM_INFO("VT-d active for gfx access\n"); | |
3221 | #endif | |
cfa7c862 DV |
3222 | /* |
3223 | * i915.enable_ppgtt is read-only, so do an early pass to validate the | |
3224 | * user's requested state against the hardware/driver capabilities. We | |
3225 | * do this now so that we can print out any log messages once rather | |
3226 | * than every time we check intel_enable_ppgtt(). | |
3227 | */ | |
3228 | i915.enable_ppgtt = sanitize_enable_ppgtt(dev, i915.enable_ppgtt); | |
3229 | DRM_DEBUG_DRIVER("ppgtt mode: %i\n", i915.enable_ppgtt); | |
baa09f5f BW |
3230 | |
3231 | return 0; | |
a4eba47b ID |
3232 | |
3233 | out_gtt_cleanup: | |
72e96d64 | 3234 | ggtt->base.cleanup(&ggtt->base); |
a4eba47b ID |
3235 | |
3236 | return ret; | |
baa09f5f | 3237 | } |
6f65e29a | 3238 | |
fa42331b DV |
3239 | void i915_gem_restore_gtt_mappings(struct drm_device *dev) |
3240 | { | |
72e96d64 JL |
3241 | struct drm_i915_private *dev_priv = to_i915(dev); |
3242 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
fa42331b | 3243 | struct drm_i915_gem_object *obj; |
2c3d9984 TU |
3244 | struct i915_vma *vma; |
3245 | bool flush; | |
fa42331b DV |
3246 | |
3247 | i915_check_and_clear_faults(dev); | |
3248 | ||
3249 | /* First fill our portion of the GTT with scratch pages */ | |
72e96d64 JL |
3250 | ggtt->base.clear_range(&ggtt->base, ggtt->base.start, ggtt->base.total, |
3251 | true); | |
fa42331b | 3252 | |
2c3d9984 | 3253 | /* Cache flush objects bound into GGTT and rebind them. */ |
fa42331b | 3254 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { |
2c3d9984 | 3255 | flush = false; |
1c7f4bca | 3256 | list_for_each_entry(vma, &obj->vma_list, obj_link) { |
72e96d64 | 3257 | if (vma->vm != &ggtt->base) |
2c3d9984 | 3258 | continue; |
fa42331b | 3259 | |
2c3d9984 TU |
3260 | WARN_ON(i915_vma_bind(vma, obj->cache_level, |
3261 | PIN_UPDATE)); | |
fa42331b | 3262 | |
2c3d9984 TU |
3263 | flush = true; |
3264 | } | |
3265 | ||
3266 | if (flush) | |
3267 | i915_gem_clflush_object(obj, obj->pin_display); | |
3268 | } | |
fa42331b DV |
3269 | |
3270 | if (INTEL_INFO(dev)->gen >= 8) { | |
3271 | if (IS_CHERRYVIEW(dev) || IS_BROXTON(dev)) | |
3272 | chv_setup_private_ppat(dev_priv); | |
3273 | else | |
3274 | bdw_setup_private_ppat(dev_priv); | |
3275 | ||
3276 | return; | |
3277 | } | |
3278 | ||
3279 | if (USES_PPGTT(dev)) { | |
72e96d64 JL |
3280 | struct i915_address_space *vm; |
3281 | ||
fa42331b DV |
3282 | list_for_each_entry(vm, &dev_priv->vm_list, global_link) { |
3283 | /* TODO: Perhaps it shouldn't be gen6 specific */ | |
3284 | ||
e5716f55 | 3285 | struct i915_hw_ppgtt *ppgtt; |
fa42331b | 3286 | |
e5716f55 | 3287 | if (vm->is_ggtt) |
fa42331b | 3288 | ppgtt = dev_priv->mm.aliasing_ppgtt; |
e5716f55 JL |
3289 | else |
3290 | ppgtt = i915_vm_to_ppgtt(vm); | |
fa42331b DV |
3291 | |
3292 | gen6_write_page_range(dev_priv, &ppgtt->pd, | |
3293 | 0, ppgtt->base.total); | |
3294 | } | |
3295 | } | |
3296 | ||
3297 | i915_ggtt_flush(dev_priv); | |
3298 | } | |
3299 | ||
ec7adb6e JL |
3300 | static struct i915_vma * |
3301 | __i915_gem_vma_create(struct drm_i915_gem_object *obj, | |
3302 | struct i915_address_space *vm, | |
3303 | const struct i915_ggtt_view *ggtt_view) | |
6f65e29a | 3304 | { |
dabde5c7 | 3305 | struct i915_vma *vma; |
6f65e29a | 3306 | |
ec7adb6e JL |
3307 | if (WARN_ON(i915_is_ggtt(vm) != !!ggtt_view)) |
3308 | return ERR_PTR(-EINVAL); | |
e20d2ab7 CW |
3309 | |
3310 | vma = kmem_cache_zalloc(to_i915(obj->base.dev)->vmas, GFP_KERNEL); | |
dabde5c7 DC |
3311 | if (vma == NULL) |
3312 | return ERR_PTR(-ENOMEM); | |
ec7adb6e | 3313 | |
1c7f4bca CW |
3314 | INIT_LIST_HEAD(&vma->vm_link); |
3315 | INIT_LIST_HEAD(&vma->obj_link); | |
6f65e29a BW |
3316 | INIT_LIST_HEAD(&vma->exec_list); |
3317 | vma->vm = vm; | |
3318 | vma->obj = obj; | |
596c5923 | 3319 | vma->is_ggtt = i915_is_ggtt(vm); |
6f65e29a | 3320 | |
777dc5bb | 3321 | if (i915_is_ggtt(vm)) |
ec7adb6e | 3322 | vma->ggtt_view = *ggtt_view; |
596c5923 CW |
3323 | else |
3324 | i915_ppgtt_get(i915_vm_to_ppgtt(vm)); | |
6f65e29a | 3325 | |
1c7f4bca | 3326 | list_add_tail(&vma->obj_link, &obj->vma_list); |
6f65e29a BW |
3327 | |
3328 | return vma; | |
3329 | } | |
3330 | ||
3331 | struct i915_vma * | |
ec7adb6e JL |
3332 | i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj, |
3333 | struct i915_address_space *vm) | |
3334 | { | |
3335 | struct i915_vma *vma; | |
3336 | ||
3337 | vma = i915_gem_obj_to_vma(obj, vm); | |
3338 | if (!vma) | |
3339 | vma = __i915_gem_vma_create(obj, vm, | |
3340 | i915_is_ggtt(vm) ? &i915_ggtt_view_normal : NULL); | |
3341 | ||
3342 | return vma; | |
3343 | } | |
3344 | ||
3345 | struct i915_vma * | |
3346 | i915_gem_obj_lookup_or_create_ggtt_vma(struct drm_i915_gem_object *obj, | |
fe14d5f4 | 3347 | const struct i915_ggtt_view *view) |
6f65e29a | 3348 | { |
72e96d64 JL |
3349 | struct drm_device *dev = obj->base.dev; |
3350 | struct drm_i915_private *dev_priv = to_i915(dev); | |
3351 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
ade7daa1 | 3352 | struct i915_vma *vma = i915_gem_obj_to_ggtt_view(obj, view); |
ec7adb6e | 3353 | |
6f65e29a | 3354 | if (!vma) |
72e96d64 | 3355 | vma = __i915_gem_vma_create(obj, &ggtt->base, view); |
6f65e29a BW |
3356 | |
3357 | return vma; | |
ec7adb6e | 3358 | |
6f65e29a | 3359 | } |
fe14d5f4 | 3360 | |
804beb4b | 3361 | static struct scatterlist * |
2d7f3bdb | 3362 | rotate_pages(const dma_addr_t *in, unsigned int offset, |
804beb4b | 3363 | unsigned int width, unsigned int height, |
87130255 | 3364 | unsigned int stride, |
804beb4b | 3365 | struct sg_table *st, struct scatterlist *sg) |
50470bb0 TU |
3366 | { |
3367 | unsigned int column, row; | |
3368 | unsigned int src_idx; | |
50470bb0 | 3369 | |
50470bb0 | 3370 | for (column = 0; column < width; column++) { |
87130255 | 3371 | src_idx = stride * (height - 1) + column; |
50470bb0 TU |
3372 | for (row = 0; row < height; row++) { |
3373 | st->nents++; | |
3374 | /* We don't need the pages, but need to initialize | |
3375 | * the entries so the sg list can be happily traversed. | |
3376 | * The only thing we need are DMA addresses. | |
3377 | */ | |
3378 | sg_set_page(sg, NULL, PAGE_SIZE, 0); | |
804beb4b | 3379 | sg_dma_address(sg) = in[offset + src_idx]; |
50470bb0 TU |
3380 | sg_dma_len(sg) = PAGE_SIZE; |
3381 | sg = sg_next(sg); | |
87130255 | 3382 | src_idx -= stride; |
50470bb0 TU |
3383 | } |
3384 | } | |
804beb4b TU |
3385 | |
3386 | return sg; | |
50470bb0 TU |
3387 | } |
3388 | ||
3389 | static struct sg_table * | |
11d23e6f | 3390 | intel_rotate_fb_obj_pages(struct intel_rotation_info *rot_info, |
50470bb0 TU |
3391 | struct drm_i915_gem_object *obj) |
3392 | { | |
1663b9d6 | 3393 | unsigned int size_pages = rot_info->plane[0].width * rot_info->plane[0].height; |
89e3e142 | 3394 | unsigned int size_pages_uv; |
50470bb0 TU |
3395 | struct sg_page_iter sg_iter; |
3396 | unsigned long i; | |
3397 | dma_addr_t *page_addr_list; | |
3398 | struct sg_table *st; | |
89e3e142 TU |
3399 | unsigned int uv_start_page; |
3400 | struct scatterlist *sg; | |
1d00dad5 | 3401 | int ret = -ENOMEM; |
50470bb0 | 3402 | |
50470bb0 | 3403 | /* Allocate a temporary list of source pages for random access. */ |
84fe03f7 TU |
3404 | page_addr_list = drm_malloc_ab(obj->base.size / PAGE_SIZE, |
3405 | sizeof(dma_addr_t)); | |
50470bb0 TU |
3406 | if (!page_addr_list) |
3407 | return ERR_PTR(ret); | |
3408 | ||
89e3e142 TU |
3409 | /* Account for UV plane with NV12. */ |
3410 | if (rot_info->pixel_format == DRM_FORMAT_NV12) | |
1663b9d6 | 3411 | size_pages_uv = rot_info->plane[1].width * rot_info->plane[1].height; |
89e3e142 TU |
3412 | else |
3413 | size_pages_uv = 0; | |
3414 | ||
50470bb0 TU |
3415 | /* Allocate target SG list. */ |
3416 | st = kmalloc(sizeof(*st), GFP_KERNEL); | |
3417 | if (!st) | |
3418 | goto err_st_alloc; | |
3419 | ||
89e3e142 | 3420 | ret = sg_alloc_table(st, size_pages + size_pages_uv, GFP_KERNEL); |
50470bb0 TU |
3421 | if (ret) |
3422 | goto err_sg_alloc; | |
3423 | ||
3424 | /* Populate source page list from the object. */ | |
3425 | i = 0; | |
3426 | for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) { | |
3427 | page_addr_list[i] = sg_page_iter_dma_address(&sg_iter); | |
3428 | i++; | |
3429 | } | |
3430 | ||
11f20322 VS |
3431 | st->nents = 0; |
3432 | sg = st->sgl; | |
3433 | ||
50470bb0 | 3434 | /* Rotate the pages. */ |
89e3e142 | 3435 | sg = rotate_pages(page_addr_list, 0, |
1663b9d6 VS |
3436 | rot_info->plane[0].width, rot_info->plane[0].height, |
3437 | rot_info->plane[0].width, | |
11f20322 | 3438 | st, sg); |
50470bb0 | 3439 | |
89e3e142 TU |
3440 | /* Append the UV plane if NV12. */ |
3441 | if (rot_info->pixel_format == DRM_FORMAT_NV12) { | |
3442 | uv_start_page = size_pages; | |
3443 | ||
3444 | /* Check for tile-row un-alignment. */ | |
3445 | if (offset_in_page(rot_info->uv_offset)) | |
3446 | uv_start_page--; | |
3447 | ||
dedf278c TU |
3448 | rot_info->uv_start_page = uv_start_page; |
3449 | ||
11f20322 VS |
3450 | sg = rotate_pages(page_addr_list, rot_info->uv_start_page, |
3451 | rot_info->plane[1].width, rot_info->plane[1].height, | |
3452 | rot_info->plane[1].width, | |
3453 | st, sg); | |
89e3e142 TU |
3454 | } |
3455 | ||
1663b9d6 VS |
3456 | DRM_DEBUG_KMS("Created rotated page mapping for object size %zu (%ux%u tiles, %u pages (%u plane 0)).\n", |
3457 | obj->base.size, rot_info->plane[0].width, | |
3458 | rot_info->plane[0].height, size_pages + size_pages_uv, | |
89e3e142 | 3459 | size_pages); |
50470bb0 TU |
3460 | |
3461 | drm_free_large(page_addr_list); | |
3462 | ||
3463 | return st; | |
3464 | ||
3465 | err_sg_alloc: | |
3466 | kfree(st); | |
3467 | err_st_alloc: | |
3468 | drm_free_large(page_addr_list); | |
3469 | ||
1663b9d6 VS |
3470 | DRM_DEBUG_KMS("Failed to create rotated mapping for object size %zu! (%d) (%ux%u tiles, %u pages (%u plane 0))\n", |
3471 | obj->base.size, ret, rot_info->plane[0].width, | |
3472 | rot_info->plane[0].height, size_pages + size_pages_uv, | |
89e3e142 | 3473 | size_pages); |
50470bb0 TU |
3474 | return ERR_PTR(ret); |
3475 | } | |
ec7adb6e | 3476 | |
8bd7ef16 JL |
3477 | static struct sg_table * |
3478 | intel_partial_pages(const struct i915_ggtt_view *view, | |
3479 | struct drm_i915_gem_object *obj) | |
3480 | { | |
3481 | struct sg_table *st; | |
3482 | struct scatterlist *sg; | |
3483 | struct sg_page_iter obj_sg_iter; | |
3484 | int ret = -ENOMEM; | |
3485 | ||
3486 | st = kmalloc(sizeof(*st), GFP_KERNEL); | |
3487 | if (!st) | |
3488 | goto err_st_alloc; | |
3489 | ||
3490 | ret = sg_alloc_table(st, view->params.partial.size, GFP_KERNEL); | |
3491 | if (ret) | |
3492 | goto err_sg_alloc; | |
3493 | ||
3494 | sg = st->sgl; | |
3495 | st->nents = 0; | |
3496 | for_each_sg_page(obj->pages->sgl, &obj_sg_iter, obj->pages->nents, | |
3497 | view->params.partial.offset) | |
3498 | { | |
3499 | if (st->nents >= view->params.partial.size) | |
3500 | break; | |
3501 | ||
3502 | sg_set_page(sg, NULL, PAGE_SIZE, 0); | |
3503 | sg_dma_address(sg) = sg_page_iter_dma_address(&obj_sg_iter); | |
3504 | sg_dma_len(sg) = PAGE_SIZE; | |
3505 | ||
3506 | sg = sg_next(sg); | |
3507 | st->nents++; | |
3508 | } | |
3509 | ||
3510 | return st; | |
3511 | ||
3512 | err_sg_alloc: | |
3513 | kfree(st); | |
3514 | err_st_alloc: | |
3515 | return ERR_PTR(ret); | |
3516 | } | |
3517 | ||
70b9f6f8 | 3518 | static int |
50470bb0 | 3519 | i915_get_ggtt_vma_pages(struct i915_vma *vma) |
fe14d5f4 | 3520 | { |
50470bb0 TU |
3521 | int ret = 0; |
3522 | ||
fe14d5f4 TU |
3523 | if (vma->ggtt_view.pages) |
3524 | return 0; | |
3525 | ||
3526 | if (vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) | |
3527 | vma->ggtt_view.pages = vma->obj->pages; | |
50470bb0 TU |
3528 | else if (vma->ggtt_view.type == I915_GGTT_VIEW_ROTATED) |
3529 | vma->ggtt_view.pages = | |
11d23e6f | 3530 | intel_rotate_fb_obj_pages(&vma->ggtt_view.params.rotated, vma->obj); |
8bd7ef16 JL |
3531 | else if (vma->ggtt_view.type == I915_GGTT_VIEW_PARTIAL) |
3532 | vma->ggtt_view.pages = | |
3533 | intel_partial_pages(&vma->ggtt_view, vma->obj); | |
fe14d5f4 TU |
3534 | else |
3535 | WARN_ONCE(1, "GGTT view %u not implemented!\n", | |
3536 | vma->ggtt_view.type); | |
3537 | ||
3538 | if (!vma->ggtt_view.pages) { | |
ec7adb6e | 3539 | DRM_ERROR("Failed to get pages for GGTT view type %u!\n", |
fe14d5f4 | 3540 | vma->ggtt_view.type); |
50470bb0 TU |
3541 | ret = -EINVAL; |
3542 | } else if (IS_ERR(vma->ggtt_view.pages)) { | |
3543 | ret = PTR_ERR(vma->ggtt_view.pages); | |
3544 | vma->ggtt_view.pages = NULL; | |
3545 | DRM_ERROR("Failed to get pages for VMA view type %u (%d)!\n", | |
3546 | vma->ggtt_view.type, ret); | |
fe14d5f4 TU |
3547 | } |
3548 | ||
50470bb0 | 3549 | return ret; |
fe14d5f4 TU |
3550 | } |
3551 | ||
3552 | /** | |
3553 | * i915_vma_bind - Sets up PTEs for an VMA in it's corresponding address space. | |
3554 | * @vma: VMA to map | |
3555 | * @cache_level: mapping cache level | |
3556 | * @flags: flags like global or local mapping | |
3557 | * | |
3558 | * DMA addresses are taken from the scatter-gather table of this object (or of | |
3559 | * this VMA in case of non-default GGTT views) and PTE entries set up. | |
3560 | * Note that DMA addresses are also the only part of the SG table we care about. | |
3561 | */ | |
3562 | int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level, | |
3563 | u32 flags) | |
3564 | { | |
75d04a37 MK |
3565 | int ret; |
3566 | u32 bind_flags; | |
1d335d1b | 3567 | |
75d04a37 MK |
3568 | if (WARN_ON(flags == 0)) |
3569 | return -EINVAL; | |
1d335d1b | 3570 | |
75d04a37 | 3571 | bind_flags = 0; |
0875546c DV |
3572 | if (flags & PIN_GLOBAL) |
3573 | bind_flags |= GLOBAL_BIND; | |
3574 | if (flags & PIN_USER) | |
3575 | bind_flags |= LOCAL_BIND; | |
3576 | ||
3577 | if (flags & PIN_UPDATE) | |
3578 | bind_flags |= vma->bound; | |
3579 | else | |
3580 | bind_flags &= ~vma->bound; | |
3581 | ||
75d04a37 MK |
3582 | if (bind_flags == 0) |
3583 | return 0; | |
3584 | ||
3585 | if (vma->bound == 0 && vma->vm->allocate_va_range) { | |
b2dd4511 MK |
3586 | /* XXX: i915_vma_pin() will fix this +- hack */ |
3587 | vma->pin_count++; | |
596c5923 | 3588 | trace_i915_va_alloc(vma); |
75d04a37 MK |
3589 | ret = vma->vm->allocate_va_range(vma->vm, |
3590 | vma->node.start, | |
3591 | vma->node.size); | |
b2dd4511 | 3592 | vma->pin_count--; |
75d04a37 MK |
3593 | if (ret) |
3594 | return ret; | |
3595 | } | |
3596 | ||
3597 | ret = vma->vm->bind_vma(vma, cache_level, bind_flags); | |
70b9f6f8 DV |
3598 | if (ret) |
3599 | return ret; | |
0875546c DV |
3600 | |
3601 | vma->bound |= bind_flags; | |
fe14d5f4 TU |
3602 | |
3603 | return 0; | |
3604 | } | |
91e6711e JL |
3605 | |
3606 | /** | |
3607 | * i915_ggtt_view_size - Get the size of a GGTT view. | |
3608 | * @obj: Object the view is of. | |
3609 | * @view: The view in question. | |
3610 | * | |
3611 | * @return The size of the GGTT view in bytes. | |
3612 | */ | |
3613 | size_t | |
3614 | i915_ggtt_view_size(struct drm_i915_gem_object *obj, | |
3615 | const struct i915_ggtt_view *view) | |
3616 | { | |
9e759ff1 | 3617 | if (view->type == I915_GGTT_VIEW_NORMAL) { |
91e6711e | 3618 | return obj->base.size; |
9e759ff1 | 3619 | } else if (view->type == I915_GGTT_VIEW_ROTATED) { |
1663b9d6 | 3620 | return intel_rotation_info_size(&view->params.rotated) << PAGE_SHIFT; |
8bd7ef16 JL |
3621 | } else if (view->type == I915_GGTT_VIEW_PARTIAL) { |
3622 | return view->params.partial.size << PAGE_SHIFT; | |
91e6711e JL |
3623 | } else { |
3624 | WARN_ONCE(1, "GGTT view %u not implemented!\n", view->type); | |
3625 | return obj->base.size; | |
3626 | } | |
3627 | } |