Commit | Line | Data |
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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> |
760285e7 DH |
27 | #include <drm/drmP.h> |
28 | #include <drm/i915_drm.h> | |
76aaf220 | 29 | #include "i915_drv.h" |
5dda8fa3 | 30 | #include "i915_vgpu.h" |
76aaf220 DV |
31 | #include "i915_trace.h" |
32 | #include "intel_drv.h" | |
33 | ||
45f8f69a TU |
34 | /** |
35 | * DOC: Global GTT views | |
36 | * | |
37 | * Background and previous state | |
38 | * | |
39 | * Historically objects could exists (be bound) in global GTT space only as | |
40 | * singular instances with a view representing all of the object's backing pages | |
41 | * in a linear fashion. This view will be called a normal view. | |
42 | * | |
43 | * To support multiple views of the same object, where the number of mapped | |
44 | * pages is not equal to the backing store, or where the layout of the pages | |
45 | * is not linear, concept of a GGTT view was added. | |
46 | * | |
47 | * One example of an alternative view is a stereo display driven by a single | |
48 | * image. In this case we would have a framebuffer looking like this | |
49 | * (2x2 pages): | |
50 | * | |
51 | * 12 | |
52 | * 34 | |
53 | * | |
54 | * Above would represent a normal GGTT view as normally mapped for GPU or CPU | |
55 | * rendering. In contrast, fed to the display engine would be an alternative | |
56 | * view which could look something like this: | |
57 | * | |
58 | * 1212 | |
59 | * 3434 | |
60 | * | |
61 | * In this example both the size and layout of pages in the alternative view is | |
62 | * different from the normal view. | |
63 | * | |
64 | * Implementation and usage | |
65 | * | |
66 | * GGTT views are implemented using VMAs and are distinguished via enum | |
67 | * i915_ggtt_view_type and struct i915_ggtt_view. | |
68 | * | |
69 | * A new flavour of core GEM functions which work with GGTT bound objects were | |
ec7adb6e JL |
70 | * added with the _ggtt_ infix, and sometimes with _view postfix to avoid |
71 | * renaming in large amounts of code. They take the struct i915_ggtt_view | |
72 | * parameter encapsulating all metadata required to implement a view. | |
45f8f69a TU |
73 | * |
74 | * As a helper for callers which are only interested in the normal view, | |
75 | * globally const i915_ggtt_view_normal singleton instance exists. All old core | |
76 | * GEM API functions, the ones not taking the view parameter, are operating on, | |
77 | * or with the normal GGTT view. | |
78 | * | |
79 | * Code wanting to add or use a new GGTT view needs to: | |
80 | * | |
81 | * 1. Add a new enum with a suitable name. | |
82 | * 2. Extend the metadata in the i915_ggtt_view structure if required. | |
83 | * 3. Add support to i915_get_vma_pages(). | |
84 | * | |
85 | * New views are required to build a scatter-gather table from within the | |
86 | * i915_get_vma_pages function. This table is stored in the vma.ggtt_view and | |
87 | * exists for the lifetime of an VMA. | |
88 | * | |
89 | * Core API is designed to have copy semantics which means that passed in | |
90 | * struct i915_ggtt_view does not need to be persistent (left around after | |
91 | * calling the core API functions). | |
92 | * | |
93 | */ | |
94 | ||
70b9f6f8 DV |
95 | static int |
96 | i915_get_ggtt_vma_pages(struct i915_vma *vma); | |
97 | ||
fe14d5f4 | 98 | const struct i915_ggtt_view i915_ggtt_view_normal; |
9abc4648 JL |
99 | const struct i915_ggtt_view i915_ggtt_view_rotated = { |
100 | .type = I915_GGTT_VIEW_ROTATED | |
101 | }; | |
fe14d5f4 | 102 | |
cfa7c862 DV |
103 | static int sanitize_enable_ppgtt(struct drm_device *dev, int enable_ppgtt) |
104 | { | |
1893a71b CW |
105 | bool has_aliasing_ppgtt; |
106 | bool has_full_ppgtt; | |
107 | ||
108 | has_aliasing_ppgtt = INTEL_INFO(dev)->gen >= 6; | |
109 | has_full_ppgtt = INTEL_INFO(dev)->gen >= 7; | |
1893a71b | 110 | |
71ba2d64 YZ |
111 | if (intel_vgpu_active(dev)) |
112 | has_full_ppgtt = false; /* emulation is too hard */ | |
113 | ||
70ee45e1 DL |
114 | /* |
115 | * We don't allow disabling PPGTT for gen9+ as it's a requirement for | |
116 | * execlists, the sole mechanism available to submit work. | |
117 | */ | |
118 | if (INTEL_INFO(dev)->gen < 9 && | |
119 | (enable_ppgtt == 0 || !has_aliasing_ppgtt)) | |
cfa7c862 DV |
120 | return 0; |
121 | ||
122 | if (enable_ppgtt == 1) | |
123 | return 1; | |
124 | ||
1893a71b | 125 | if (enable_ppgtt == 2 && has_full_ppgtt) |
cfa7c862 DV |
126 | return 2; |
127 | ||
93a25a9e DV |
128 | #ifdef CONFIG_INTEL_IOMMU |
129 | /* Disable ppgtt on SNB if VT-d is on. */ | |
130 | if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped) { | |
131 | DRM_INFO("Disabling PPGTT because VT-d is on\n"); | |
cfa7c862 | 132 | return 0; |
93a25a9e DV |
133 | } |
134 | #endif | |
135 | ||
62942ed7 | 136 | /* Early VLV doesn't have this */ |
ca2aed6c VS |
137 | if (IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) && |
138 | dev->pdev->revision < 0xb) { | |
62942ed7 JB |
139 | DRM_DEBUG_DRIVER("disabling PPGTT on pre-B3 step VLV\n"); |
140 | return 0; | |
141 | } | |
142 | ||
2f82bbdf MT |
143 | if (INTEL_INFO(dev)->gen >= 8 && i915.enable_execlists) |
144 | return 2; | |
145 | else | |
146 | return has_aliasing_ppgtt ? 1 : 0; | |
93a25a9e DV |
147 | } |
148 | ||
70b9f6f8 DV |
149 | static int ppgtt_bind_vma(struct i915_vma *vma, |
150 | enum i915_cache_level cache_level, | |
151 | u32 unused) | |
47552659 DV |
152 | { |
153 | u32 pte_flags = 0; | |
154 | ||
155 | /* Currently applicable only to VLV */ | |
156 | if (vma->obj->gt_ro) | |
157 | pte_flags |= PTE_READ_ONLY; | |
158 | ||
159 | vma->vm->insert_entries(vma->vm, vma->obj->pages, vma->node.start, | |
160 | cache_level, pte_flags); | |
70b9f6f8 DV |
161 | |
162 | return 0; | |
47552659 DV |
163 | } |
164 | ||
165 | static void ppgtt_unbind_vma(struct i915_vma *vma) | |
166 | { | |
167 | vma->vm->clear_range(vma->vm, | |
168 | vma->node.start, | |
169 | vma->obj->base.size, | |
170 | true); | |
171 | } | |
6f65e29a | 172 | |
2c642b07 DV |
173 | static gen8_pte_t gen8_pte_encode(dma_addr_t addr, |
174 | enum i915_cache_level level, | |
175 | bool valid) | |
94ec8f61 | 176 | { |
07749ef3 | 177 | gen8_pte_t pte = valid ? _PAGE_PRESENT | _PAGE_RW : 0; |
94ec8f61 | 178 | pte |= addr; |
63c42e56 BW |
179 | |
180 | switch (level) { | |
181 | case I915_CACHE_NONE: | |
fbe5d36e | 182 | pte |= PPAT_UNCACHED_INDEX; |
63c42e56 BW |
183 | break; |
184 | case I915_CACHE_WT: | |
185 | pte |= PPAT_DISPLAY_ELLC_INDEX; | |
186 | break; | |
187 | default: | |
188 | pte |= PPAT_CACHED_INDEX; | |
189 | break; | |
190 | } | |
191 | ||
94ec8f61 BW |
192 | return pte; |
193 | } | |
194 | ||
fe36f55d MK |
195 | static gen8_pde_t gen8_pde_encode(const dma_addr_t addr, |
196 | const enum i915_cache_level level) | |
b1fe6673 | 197 | { |
07749ef3 | 198 | gen8_pde_t pde = _PAGE_PRESENT | _PAGE_RW; |
b1fe6673 BW |
199 | pde |= addr; |
200 | if (level != I915_CACHE_NONE) | |
201 | pde |= PPAT_CACHED_PDE_INDEX; | |
202 | else | |
203 | pde |= PPAT_UNCACHED_INDEX; | |
204 | return pde; | |
205 | } | |
206 | ||
07749ef3 MT |
207 | static gen6_pte_t snb_pte_encode(dma_addr_t addr, |
208 | enum i915_cache_level level, | |
209 | bool valid, u32 unused) | |
54d12527 | 210 | { |
07749ef3 | 211 | gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
54d12527 | 212 | pte |= GEN6_PTE_ADDR_ENCODE(addr); |
e7210c3c BW |
213 | |
214 | switch (level) { | |
350ec881 CW |
215 | case I915_CACHE_L3_LLC: |
216 | case I915_CACHE_LLC: | |
217 | pte |= GEN6_PTE_CACHE_LLC; | |
218 | break; | |
219 | case I915_CACHE_NONE: | |
220 | pte |= GEN6_PTE_UNCACHED; | |
221 | break; | |
222 | default: | |
5f77eeb0 | 223 | MISSING_CASE(level); |
350ec881 CW |
224 | } |
225 | ||
226 | return pte; | |
227 | } | |
228 | ||
07749ef3 MT |
229 | static gen6_pte_t ivb_pte_encode(dma_addr_t addr, |
230 | enum i915_cache_level level, | |
231 | bool valid, u32 unused) | |
350ec881 | 232 | { |
07749ef3 | 233 | gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
350ec881 CW |
234 | pte |= GEN6_PTE_ADDR_ENCODE(addr); |
235 | ||
236 | switch (level) { | |
237 | case I915_CACHE_L3_LLC: | |
238 | pte |= GEN7_PTE_CACHE_L3_LLC; | |
e7210c3c BW |
239 | break; |
240 | case I915_CACHE_LLC: | |
241 | pte |= GEN6_PTE_CACHE_LLC; | |
242 | break; | |
243 | case I915_CACHE_NONE: | |
9119708c | 244 | pte |= GEN6_PTE_UNCACHED; |
e7210c3c BW |
245 | break; |
246 | default: | |
5f77eeb0 | 247 | MISSING_CASE(level); |
e7210c3c BW |
248 | } |
249 | ||
54d12527 BW |
250 | return pte; |
251 | } | |
252 | ||
07749ef3 MT |
253 | static gen6_pte_t byt_pte_encode(dma_addr_t addr, |
254 | enum i915_cache_level level, | |
255 | bool valid, u32 flags) | |
93c34e70 | 256 | { |
07749ef3 | 257 | gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
93c34e70 KG |
258 | pte |= GEN6_PTE_ADDR_ENCODE(addr); |
259 | ||
24f3a8cf AG |
260 | if (!(flags & PTE_READ_ONLY)) |
261 | pte |= BYT_PTE_WRITEABLE; | |
93c34e70 KG |
262 | |
263 | if (level != I915_CACHE_NONE) | |
264 | pte |= BYT_PTE_SNOOPED_BY_CPU_CACHES; | |
265 | ||
266 | return pte; | |
267 | } | |
268 | ||
07749ef3 MT |
269 | static gen6_pte_t hsw_pte_encode(dma_addr_t addr, |
270 | enum i915_cache_level level, | |
271 | bool valid, u32 unused) | |
9119708c | 272 | { |
07749ef3 | 273 | gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
0d8ff15e | 274 | pte |= HSW_PTE_ADDR_ENCODE(addr); |
9119708c KG |
275 | |
276 | if (level != I915_CACHE_NONE) | |
87a6b688 | 277 | pte |= HSW_WB_LLC_AGE3; |
9119708c KG |
278 | |
279 | return pte; | |
280 | } | |
281 | ||
07749ef3 MT |
282 | static gen6_pte_t iris_pte_encode(dma_addr_t addr, |
283 | enum i915_cache_level level, | |
284 | bool valid, u32 unused) | |
4d15c145 | 285 | { |
07749ef3 | 286 | gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
4d15c145 BW |
287 | pte |= HSW_PTE_ADDR_ENCODE(addr); |
288 | ||
651d794f CW |
289 | switch (level) { |
290 | case I915_CACHE_NONE: | |
291 | break; | |
292 | case I915_CACHE_WT: | |
c51e9701 | 293 | pte |= HSW_WT_ELLC_LLC_AGE3; |
651d794f CW |
294 | break; |
295 | default: | |
c51e9701 | 296 | pte |= HSW_WB_ELLC_LLC_AGE3; |
651d794f CW |
297 | break; |
298 | } | |
4d15c145 BW |
299 | |
300 | return pte; | |
301 | } | |
302 | ||
c114f76a MK |
303 | static int __setup_page_dma(struct drm_device *dev, |
304 | struct i915_page_dma *p, gfp_t flags) | |
678d96fb BW |
305 | { |
306 | struct device *device = &dev->pdev->dev; | |
307 | ||
c114f76a | 308 | p->page = alloc_page(flags); |
44159ddb MK |
309 | if (!p->page) |
310 | return -ENOMEM; | |
678d96fb | 311 | |
44159ddb MK |
312 | p->daddr = dma_map_page(device, |
313 | p->page, 0, 4096, PCI_DMA_BIDIRECTIONAL); | |
678d96fb | 314 | |
44159ddb MK |
315 | if (dma_mapping_error(device, p->daddr)) { |
316 | __free_page(p->page); | |
317 | return -EINVAL; | |
318 | } | |
1266cdb1 MT |
319 | |
320 | return 0; | |
678d96fb BW |
321 | } |
322 | ||
c114f76a MK |
323 | static int setup_page_dma(struct drm_device *dev, struct i915_page_dma *p) |
324 | { | |
325 | return __setup_page_dma(dev, p, GFP_KERNEL); | |
326 | } | |
327 | ||
44159ddb | 328 | static void cleanup_page_dma(struct drm_device *dev, struct i915_page_dma *p) |
06fda602 | 329 | { |
44159ddb | 330 | if (WARN_ON(!p->page)) |
06fda602 | 331 | return; |
678d96fb | 332 | |
44159ddb MK |
333 | dma_unmap_page(&dev->pdev->dev, p->daddr, 4096, PCI_DMA_BIDIRECTIONAL); |
334 | __free_page(p->page); | |
335 | memset(p, 0, sizeof(*p)); | |
336 | } | |
337 | ||
d1c54acd | 338 | static void *kmap_page_dma(struct i915_page_dma *p) |
73eeea53 | 339 | { |
d1c54acd MK |
340 | return kmap_atomic(p->page); |
341 | } | |
73eeea53 | 342 | |
d1c54acd MK |
343 | /* We use the flushing unmap only with ppgtt structures: |
344 | * page directories, page tables and scratch pages. | |
345 | */ | |
346 | static void kunmap_page_dma(struct drm_device *dev, void *vaddr) | |
347 | { | |
73eeea53 MK |
348 | /* There are only few exceptions for gen >=6. chv and bxt. |
349 | * And we are not sure about the latter so play safe for now. | |
350 | */ | |
351 | if (IS_CHERRYVIEW(dev) || IS_BROXTON(dev)) | |
352 | drm_clflush_virt_range(vaddr, PAGE_SIZE); | |
353 | ||
354 | kunmap_atomic(vaddr); | |
355 | } | |
356 | ||
567047be | 357 | #define kmap_px(px) kmap_page_dma(px_base(px)) |
d1c54acd MK |
358 | #define kunmap_px(ppgtt, vaddr) kunmap_page_dma((ppgtt)->base.dev, (vaddr)) |
359 | ||
567047be MK |
360 | #define setup_px(dev, px) setup_page_dma((dev), px_base(px)) |
361 | #define cleanup_px(dev, px) cleanup_page_dma((dev), px_base(px)) | |
362 | #define fill_px(dev, px, v) fill_page_dma((dev), px_base(px), (v)) | |
363 | #define fill32_px(dev, px, v) fill_page_dma_32((dev), px_base(px), (v)) | |
364 | ||
d1c54acd MK |
365 | static void fill_page_dma(struct drm_device *dev, struct i915_page_dma *p, |
366 | const uint64_t val) | |
367 | { | |
368 | int i; | |
369 | uint64_t * const vaddr = kmap_page_dma(p); | |
370 | ||
371 | for (i = 0; i < 512; i++) | |
372 | vaddr[i] = val; | |
373 | ||
374 | kunmap_page_dma(dev, vaddr); | |
375 | } | |
376 | ||
73eeea53 MK |
377 | static void fill_page_dma_32(struct drm_device *dev, struct i915_page_dma *p, |
378 | const uint32_t val32) | |
379 | { | |
380 | uint64_t v = val32; | |
381 | ||
382 | v = v << 32 | val32; | |
383 | ||
384 | fill_page_dma(dev, p, v); | |
385 | } | |
386 | ||
4ad2af1e MK |
387 | static struct i915_page_scratch *alloc_scratch_page(struct drm_device *dev) |
388 | { | |
389 | struct i915_page_scratch *sp; | |
390 | int ret; | |
391 | ||
392 | sp = kzalloc(sizeof(*sp), GFP_KERNEL); | |
393 | if (sp == NULL) | |
394 | return ERR_PTR(-ENOMEM); | |
395 | ||
396 | ret = __setup_page_dma(dev, px_base(sp), GFP_DMA32 | __GFP_ZERO); | |
397 | if (ret) { | |
398 | kfree(sp); | |
399 | return ERR_PTR(ret); | |
400 | } | |
401 | ||
402 | set_pages_uc(px_page(sp), 1); | |
403 | ||
404 | return sp; | |
405 | } | |
406 | ||
407 | static void free_scratch_page(struct drm_device *dev, | |
408 | struct i915_page_scratch *sp) | |
409 | { | |
410 | set_pages_wb(px_page(sp), 1); | |
411 | ||
412 | cleanup_px(dev, sp); | |
413 | kfree(sp); | |
414 | } | |
415 | ||
8a1ebd74 | 416 | static struct i915_page_table *alloc_pt(struct drm_device *dev) |
06fda602 | 417 | { |
ec565b3c | 418 | struct i915_page_table *pt; |
678d96fb BW |
419 | const size_t count = INTEL_INFO(dev)->gen >= 8 ? |
420 | GEN8_PTES : GEN6_PTES; | |
421 | int ret = -ENOMEM; | |
06fda602 BW |
422 | |
423 | pt = kzalloc(sizeof(*pt), GFP_KERNEL); | |
424 | if (!pt) | |
425 | return ERR_PTR(-ENOMEM); | |
426 | ||
678d96fb BW |
427 | pt->used_ptes = kcalloc(BITS_TO_LONGS(count), sizeof(*pt->used_ptes), |
428 | GFP_KERNEL); | |
429 | ||
430 | if (!pt->used_ptes) | |
431 | goto fail_bitmap; | |
432 | ||
567047be | 433 | ret = setup_px(dev, pt); |
678d96fb | 434 | if (ret) |
44159ddb | 435 | goto fail_page_m; |
06fda602 BW |
436 | |
437 | return pt; | |
678d96fb | 438 | |
44159ddb | 439 | fail_page_m: |
678d96fb BW |
440 | kfree(pt->used_ptes); |
441 | fail_bitmap: | |
442 | kfree(pt); | |
443 | ||
444 | return ERR_PTR(ret); | |
06fda602 BW |
445 | } |
446 | ||
2e906bea | 447 | static void free_pt(struct drm_device *dev, struct i915_page_table *pt) |
06fda602 | 448 | { |
2e906bea MK |
449 | cleanup_px(dev, pt); |
450 | kfree(pt->used_ptes); | |
451 | kfree(pt); | |
452 | } | |
453 | ||
454 | static void gen8_initialize_pt(struct i915_address_space *vm, | |
455 | struct i915_page_table *pt) | |
456 | { | |
457 | gen8_pte_t scratch_pte; | |
458 | ||
459 | scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page), | |
460 | I915_CACHE_LLC, true); | |
461 | ||
462 | fill_px(vm->dev, pt, scratch_pte); | |
463 | } | |
464 | ||
465 | static void gen6_initialize_pt(struct i915_address_space *vm, | |
466 | struct i915_page_table *pt) | |
467 | { | |
468 | gen6_pte_t scratch_pte; | |
469 | ||
470 | WARN_ON(px_dma(vm->scratch_page) == 0); | |
471 | ||
472 | scratch_pte = vm->pte_encode(px_dma(vm->scratch_page), | |
473 | I915_CACHE_LLC, true, 0); | |
474 | ||
475 | fill32_px(vm->dev, pt, scratch_pte); | |
06fda602 BW |
476 | } |
477 | ||
8a1ebd74 | 478 | static struct i915_page_directory *alloc_pd(struct drm_device *dev) |
06fda602 | 479 | { |
ec565b3c | 480 | struct i915_page_directory *pd; |
33c8819f | 481 | int ret = -ENOMEM; |
06fda602 BW |
482 | |
483 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); | |
484 | if (!pd) | |
485 | return ERR_PTR(-ENOMEM); | |
486 | ||
33c8819f MT |
487 | pd->used_pdes = kcalloc(BITS_TO_LONGS(I915_PDES), |
488 | sizeof(*pd->used_pdes), GFP_KERNEL); | |
489 | if (!pd->used_pdes) | |
a08e111a | 490 | goto fail_bitmap; |
33c8819f | 491 | |
567047be | 492 | ret = setup_px(dev, pd); |
33c8819f | 493 | if (ret) |
a08e111a | 494 | goto fail_page_m; |
e5815a2e | 495 | |
06fda602 | 496 | return pd; |
33c8819f | 497 | |
a08e111a | 498 | fail_page_m: |
33c8819f | 499 | kfree(pd->used_pdes); |
a08e111a | 500 | fail_bitmap: |
33c8819f MT |
501 | kfree(pd); |
502 | ||
503 | return ERR_PTR(ret); | |
06fda602 BW |
504 | } |
505 | ||
2e906bea MK |
506 | static void free_pd(struct drm_device *dev, struct i915_page_directory *pd) |
507 | { | |
508 | if (px_page(pd)) { | |
509 | cleanup_px(dev, pd); | |
510 | kfree(pd->used_pdes); | |
511 | kfree(pd); | |
512 | } | |
513 | } | |
514 | ||
515 | static void gen8_initialize_pd(struct i915_address_space *vm, | |
516 | struct i915_page_directory *pd) | |
517 | { | |
518 | gen8_pde_t scratch_pde; | |
519 | ||
520 | scratch_pde = gen8_pde_encode(px_dma(vm->scratch_pt), I915_CACHE_LLC); | |
521 | ||
522 | fill_px(vm->dev, pd, scratch_pde); | |
523 | } | |
524 | ||
6ac18502 MT |
525 | static int __pdp_init(struct drm_device *dev, |
526 | struct i915_page_directory_pointer *pdp) | |
527 | { | |
528 | size_t pdpes = I915_PDPES_PER_PDP(dev); | |
529 | ||
530 | pdp->used_pdpes = kcalloc(BITS_TO_LONGS(pdpes), | |
531 | sizeof(unsigned long), | |
532 | GFP_KERNEL); | |
533 | if (!pdp->used_pdpes) | |
534 | return -ENOMEM; | |
535 | ||
536 | pdp->page_directory = kcalloc(pdpes, sizeof(*pdp->page_directory), | |
537 | GFP_KERNEL); | |
538 | if (!pdp->page_directory) { | |
539 | kfree(pdp->used_pdpes); | |
540 | /* the PDP might be the statically allocated top level. Keep it | |
541 | * as clean as possible */ | |
542 | pdp->used_pdpes = NULL; | |
543 | return -ENOMEM; | |
544 | } | |
545 | ||
546 | return 0; | |
547 | } | |
548 | ||
549 | static void __pdp_fini(struct i915_page_directory_pointer *pdp) | |
550 | { | |
551 | kfree(pdp->used_pdpes); | |
552 | kfree(pdp->page_directory); | |
553 | pdp->page_directory = NULL; | |
554 | } | |
555 | ||
556 | static void free_pdp(struct drm_device *dev, | |
557 | struct i915_page_directory_pointer *pdp) | |
558 | { | |
559 | __pdp_fini(pdp); | |
560 | } | |
561 | ||
94e409c1 | 562 | /* Broadwell Page Directory Pointer Descriptors */ |
e85b26dc | 563 | static int gen8_write_pdp(struct drm_i915_gem_request *req, |
7cb6d7ac MT |
564 | unsigned entry, |
565 | dma_addr_t addr) | |
94e409c1 | 566 | { |
e85b26dc | 567 | struct intel_engine_cs *ring = req->ring; |
94e409c1 BW |
568 | int ret; |
569 | ||
570 | BUG_ON(entry >= 4); | |
571 | ||
5fb9de1a | 572 | ret = intel_ring_begin(req, 6); |
94e409c1 BW |
573 | if (ret) |
574 | return ret; | |
575 | ||
576 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1)); | |
577 | intel_ring_emit(ring, GEN8_RING_PDP_UDW(ring, entry)); | |
7cb6d7ac | 578 | intel_ring_emit(ring, upper_32_bits(addr)); |
94e409c1 BW |
579 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1)); |
580 | intel_ring_emit(ring, GEN8_RING_PDP_LDW(ring, entry)); | |
7cb6d7ac | 581 | intel_ring_emit(ring, lower_32_bits(addr)); |
94e409c1 BW |
582 | intel_ring_advance(ring); |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
eeb9488e | 587 | static int gen8_mm_switch(struct i915_hw_ppgtt *ppgtt, |
e85b26dc | 588 | struct drm_i915_gem_request *req) |
94e409c1 | 589 | { |
eeb9488e | 590 | int i, ret; |
94e409c1 | 591 | |
7cb6d7ac | 592 | for (i = GEN8_LEGACY_PDPES - 1; i >= 0; i--) { |
d852c7bf MK |
593 | const dma_addr_t pd_daddr = i915_page_dir_dma_addr(ppgtt, i); |
594 | ||
e85b26dc | 595 | ret = gen8_write_pdp(req, i, pd_daddr); |
eeb9488e BW |
596 | if (ret) |
597 | return ret; | |
94e409c1 | 598 | } |
d595bd4b | 599 | |
eeb9488e | 600 | return 0; |
94e409c1 BW |
601 | } |
602 | ||
f9b5b782 MT |
603 | static void gen8_ppgtt_clear_pte_range(struct i915_address_space *vm, |
604 | struct i915_page_directory_pointer *pdp, | |
605 | uint64_t start, | |
606 | uint64_t length, | |
607 | gen8_pte_t scratch_pte) | |
459108b8 BW |
608 | { |
609 | struct i915_hw_ppgtt *ppgtt = | |
610 | container_of(vm, struct i915_hw_ppgtt, base); | |
f9b5b782 | 611 | gen8_pte_t *pt_vaddr; |
7ad47cf2 BW |
612 | unsigned pdpe = start >> GEN8_PDPE_SHIFT & GEN8_PDPE_MASK; |
613 | unsigned pde = start >> GEN8_PDE_SHIFT & GEN8_PDE_MASK; | |
614 | unsigned pte = start >> GEN8_PTE_SHIFT & GEN8_PTE_MASK; | |
782f1495 | 615 | unsigned num_entries = length >> PAGE_SHIFT; |
459108b8 BW |
616 | unsigned last_pte, i; |
617 | ||
f9b5b782 MT |
618 | if (WARN_ON(!pdp)) |
619 | return; | |
459108b8 BW |
620 | |
621 | while (num_entries) { | |
ec565b3c MT |
622 | struct i915_page_directory *pd; |
623 | struct i915_page_table *pt; | |
06fda602 | 624 | |
d4ec9da0 | 625 | if (WARN_ON(!pdp->page_directory[pdpe])) |
00245266 | 626 | break; |
06fda602 | 627 | |
d4ec9da0 | 628 | pd = pdp->page_directory[pdpe]; |
06fda602 BW |
629 | |
630 | if (WARN_ON(!pd->page_table[pde])) | |
00245266 | 631 | break; |
06fda602 BW |
632 | |
633 | pt = pd->page_table[pde]; | |
634 | ||
567047be | 635 | if (WARN_ON(!px_page(pt))) |
00245266 | 636 | break; |
06fda602 | 637 | |
7ad47cf2 | 638 | last_pte = pte + num_entries; |
07749ef3 MT |
639 | if (last_pte > GEN8_PTES) |
640 | last_pte = GEN8_PTES; | |
459108b8 | 641 | |
d1c54acd | 642 | pt_vaddr = kmap_px(pt); |
459108b8 | 643 | |
7ad47cf2 | 644 | for (i = pte; i < last_pte; i++) { |
459108b8 | 645 | pt_vaddr[i] = scratch_pte; |
7ad47cf2 BW |
646 | num_entries--; |
647 | } | |
459108b8 | 648 | |
d1c54acd | 649 | kunmap_px(ppgtt, pt); |
459108b8 | 650 | |
7ad47cf2 | 651 | pte = 0; |
07749ef3 | 652 | if (++pde == I915_PDES) { |
7ad47cf2 BW |
653 | pdpe++; |
654 | pde = 0; | |
655 | } | |
459108b8 BW |
656 | } |
657 | } | |
658 | ||
f9b5b782 MT |
659 | static void gen8_ppgtt_clear_range(struct i915_address_space *vm, |
660 | uint64_t start, | |
661 | uint64_t length, | |
662 | bool use_scratch) | |
9df15b49 BW |
663 | { |
664 | struct i915_hw_ppgtt *ppgtt = | |
665 | container_of(vm, struct i915_hw_ppgtt, base); | |
d4ec9da0 | 666 | struct i915_page_directory_pointer *pdp = &ppgtt->pdp; /* FIXME: 48b */ |
f9b5b782 MT |
667 | |
668 | gen8_pte_t scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page), | |
669 | I915_CACHE_LLC, use_scratch); | |
670 | ||
671 | gen8_ppgtt_clear_pte_range(vm, pdp, start, length, scratch_pte); | |
672 | } | |
673 | ||
674 | static void | |
675 | gen8_ppgtt_insert_pte_entries(struct i915_address_space *vm, | |
676 | struct i915_page_directory_pointer *pdp, | |
677 | struct sg_table *pages, | |
678 | uint64_t start, | |
679 | enum i915_cache_level cache_level) | |
680 | { | |
681 | struct i915_hw_ppgtt *ppgtt = | |
682 | container_of(vm, struct i915_hw_ppgtt, base); | |
07749ef3 | 683 | gen8_pte_t *pt_vaddr; |
7ad47cf2 BW |
684 | unsigned pdpe = start >> GEN8_PDPE_SHIFT & GEN8_PDPE_MASK; |
685 | unsigned pde = start >> GEN8_PDE_SHIFT & GEN8_PDE_MASK; | |
686 | unsigned pte = start >> GEN8_PTE_SHIFT & GEN8_PTE_MASK; | |
9df15b49 BW |
687 | struct sg_page_iter sg_iter; |
688 | ||
6f1cc993 | 689 | pt_vaddr = NULL; |
7ad47cf2 | 690 | |
9df15b49 | 691 | for_each_sg_page(pages->sgl, &sg_iter, pages->nents, 0) { |
76643600 | 692 | if (WARN_ON(pdpe >= GEN8_LEGACY_PDPES)) |
7ad47cf2 BW |
693 | break; |
694 | ||
d7b3de91 | 695 | if (pt_vaddr == NULL) { |
d4ec9da0 | 696 | struct i915_page_directory *pd = pdp->page_directory[pdpe]; |
ec565b3c | 697 | struct i915_page_table *pt = pd->page_table[pde]; |
d1c54acd | 698 | pt_vaddr = kmap_px(pt); |
d7b3de91 | 699 | } |
9df15b49 | 700 | |
7ad47cf2 | 701 | pt_vaddr[pte] = |
6f1cc993 CW |
702 | gen8_pte_encode(sg_page_iter_dma_address(&sg_iter), |
703 | cache_level, true); | |
07749ef3 | 704 | if (++pte == GEN8_PTES) { |
d1c54acd | 705 | kunmap_px(ppgtt, pt_vaddr); |
6f1cc993 | 706 | pt_vaddr = NULL; |
07749ef3 | 707 | if (++pde == I915_PDES) { |
7ad47cf2 BW |
708 | pdpe++; |
709 | pde = 0; | |
710 | } | |
711 | pte = 0; | |
9df15b49 BW |
712 | } |
713 | } | |
d1c54acd MK |
714 | |
715 | if (pt_vaddr) | |
716 | kunmap_px(ppgtt, pt_vaddr); | |
9df15b49 BW |
717 | } |
718 | ||
f9b5b782 MT |
719 | static void gen8_ppgtt_insert_entries(struct i915_address_space *vm, |
720 | struct sg_table *pages, | |
721 | uint64_t start, | |
722 | enum i915_cache_level cache_level, | |
723 | u32 unused) | |
724 | { | |
725 | struct i915_hw_ppgtt *ppgtt = | |
726 | container_of(vm, struct i915_hw_ppgtt, base); | |
727 | struct i915_page_directory_pointer *pdp = &ppgtt->pdp; /* FIXME: 48b */ | |
728 | ||
729 | gen8_ppgtt_insert_pte_entries(vm, pdp, pages, start, cache_level); | |
730 | } | |
731 | ||
f37c0505 MT |
732 | static void gen8_free_page_tables(struct drm_device *dev, |
733 | struct i915_page_directory *pd) | |
7ad47cf2 BW |
734 | { |
735 | int i; | |
736 | ||
567047be | 737 | if (!px_page(pd)) |
7ad47cf2 BW |
738 | return; |
739 | ||
33c8819f | 740 | for_each_set_bit(i, pd->used_pdes, I915_PDES) { |
06fda602 BW |
741 | if (WARN_ON(!pd->page_table[i])) |
742 | continue; | |
7ad47cf2 | 743 | |
a08e111a | 744 | free_pt(dev, pd->page_table[i]); |
06fda602 BW |
745 | pd->page_table[i] = NULL; |
746 | } | |
d7b3de91 BW |
747 | } |
748 | ||
8776f02b MK |
749 | static int gen8_init_scratch(struct i915_address_space *vm) |
750 | { | |
751 | struct drm_device *dev = vm->dev; | |
752 | ||
753 | vm->scratch_page = alloc_scratch_page(dev); | |
754 | if (IS_ERR(vm->scratch_page)) | |
755 | return PTR_ERR(vm->scratch_page); | |
756 | ||
757 | vm->scratch_pt = alloc_pt(dev); | |
758 | if (IS_ERR(vm->scratch_pt)) { | |
759 | free_scratch_page(dev, vm->scratch_page); | |
760 | return PTR_ERR(vm->scratch_pt); | |
761 | } | |
762 | ||
763 | vm->scratch_pd = alloc_pd(dev); | |
764 | if (IS_ERR(vm->scratch_pd)) { | |
765 | free_pt(dev, vm->scratch_pt); | |
766 | free_scratch_page(dev, vm->scratch_page); | |
767 | return PTR_ERR(vm->scratch_pd); | |
768 | } | |
769 | ||
770 | gen8_initialize_pt(vm, vm->scratch_pt); | |
771 | gen8_initialize_pd(vm, vm->scratch_pd); | |
772 | ||
773 | return 0; | |
774 | } | |
775 | ||
776 | static void gen8_free_scratch(struct i915_address_space *vm) | |
777 | { | |
778 | struct drm_device *dev = vm->dev; | |
779 | ||
780 | free_pd(dev, vm->scratch_pd); | |
781 | free_pt(dev, vm->scratch_pt); | |
782 | free_scratch_page(dev, vm->scratch_page); | |
783 | } | |
784 | ||
061dd493 | 785 | static void gen8_ppgtt_cleanup(struct i915_address_space *vm) |
b45a6715 | 786 | { |
061dd493 DV |
787 | struct i915_hw_ppgtt *ppgtt = |
788 | container_of(vm, struct i915_hw_ppgtt, base); | |
d4ec9da0 MT |
789 | struct i915_page_directory_pointer *pdp = &ppgtt->pdp; /* FIXME: 48b */ |
790 | struct drm_device *dev = ppgtt->base.dev; | |
b45a6715 BW |
791 | int i; |
792 | ||
d4ec9da0 MT |
793 | for_each_set_bit(i, pdp->used_pdpes, I915_PDPES_PER_PDP(dev)) { |
794 | if (WARN_ON(!pdp->page_directory[i])) | |
06fda602 BW |
795 | continue; |
796 | ||
d4ec9da0 MT |
797 | gen8_free_page_tables(dev, pdp->page_directory[i]); |
798 | free_pd(dev, pdp->page_directory[i]); | |
7ad47cf2 | 799 | } |
69876bed | 800 | |
d4ec9da0 MT |
801 | free_pdp(dev, pdp); |
802 | ||
8776f02b | 803 | gen8_free_scratch(vm); |
b45a6715 BW |
804 | } |
805 | ||
d7b2633d MT |
806 | /** |
807 | * gen8_ppgtt_alloc_pagetabs() - Allocate page tables for VA range. | |
d4ec9da0 MT |
808 | * @vm: Master vm structure. |
809 | * @pd: Page directory for this address range. | |
d7b2633d | 810 | * @start: Starting virtual address to begin allocations. |
d4ec9da0 | 811 | * @length: Size of the allocations. |
d7b2633d MT |
812 | * @new_pts: Bitmap set by function with new allocations. Likely used by the |
813 | * caller to free on error. | |
814 | * | |
815 | * Allocate the required number of page tables. Extremely similar to | |
816 | * gen8_ppgtt_alloc_page_directories(). The main difference is here we are limited by | |
817 | * the page directory boundary (instead of the page directory pointer). That | |
818 | * boundary is 1GB virtual. Therefore, unlike gen8_ppgtt_alloc_page_directories(), it is | |
819 | * possible, and likely that the caller will need to use multiple calls of this | |
820 | * function to achieve the appropriate allocation. | |
821 | * | |
822 | * Return: 0 if success; negative error code otherwise. | |
823 | */ | |
d4ec9da0 | 824 | static int gen8_ppgtt_alloc_pagetabs(struct i915_address_space *vm, |
e5815a2e | 825 | struct i915_page_directory *pd, |
5441f0cb | 826 | uint64_t start, |
d7b2633d MT |
827 | uint64_t length, |
828 | unsigned long *new_pts) | |
bf2b4ed2 | 829 | { |
d4ec9da0 | 830 | struct drm_device *dev = vm->dev; |
d7b2633d | 831 | struct i915_page_table *pt; |
5441f0cb MT |
832 | uint64_t temp; |
833 | uint32_t pde; | |
bf2b4ed2 | 834 | |
d7b2633d MT |
835 | gen8_for_each_pde(pt, pd, start, length, temp, pde) { |
836 | /* Don't reallocate page tables */ | |
6ac18502 | 837 | if (test_bit(pde, pd->used_pdes)) { |
d7b2633d | 838 | /* Scratch is never allocated this way */ |
d4ec9da0 | 839 | WARN_ON(pt == vm->scratch_pt); |
d7b2633d MT |
840 | continue; |
841 | } | |
842 | ||
8a1ebd74 | 843 | pt = alloc_pt(dev); |
d7b2633d | 844 | if (IS_ERR(pt)) |
5441f0cb MT |
845 | goto unwind_out; |
846 | ||
d4ec9da0 | 847 | gen8_initialize_pt(vm, pt); |
d7b2633d | 848 | pd->page_table[pde] = pt; |
966082c9 | 849 | __set_bit(pde, new_pts); |
4c06ec8d | 850 | trace_i915_page_table_entry_alloc(vm, pde, start, GEN8_PDE_SHIFT); |
7ad47cf2 BW |
851 | } |
852 | ||
bf2b4ed2 | 853 | return 0; |
7ad47cf2 BW |
854 | |
855 | unwind_out: | |
d7b2633d | 856 | for_each_set_bit(pde, new_pts, I915_PDES) |
a08e111a | 857 | free_pt(dev, pd->page_table[pde]); |
7ad47cf2 | 858 | |
d7b3de91 | 859 | return -ENOMEM; |
bf2b4ed2 BW |
860 | } |
861 | ||
d7b2633d MT |
862 | /** |
863 | * gen8_ppgtt_alloc_page_directories() - Allocate page directories for VA range. | |
d4ec9da0 | 864 | * @vm: Master vm structure. |
d7b2633d MT |
865 | * @pdp: Page directory pointer for this address range. |
866 | * @start: Starting virtual address to begin allocations. | |
d4ec9da0 MT |
867 | * @length: Size of the allocations. |
868 | * @new_pds: Bitmap set by function with new allocations. Likely used by the | |
d7b2633d MT |
869 | * caller to free on error. |
870 | * | |
871 | * Allocate the required number of page directories starting at the pde index of | |
872 | * @start, and ending at the pde index @start + @length. This function will skip | |
873 | * over already allocated page directories within the range, and only allocate | |
874 | * new ones, setting the appropriate pointer within the pdp as well as the | |
875 | * correct position in the bitmap @new_pds. | |
876 | * | |
877 | * The function will only allocate the pages within the range for a give page | |
878 | * directory pointer. In other words, if @start + @length straddles a virtually | |
879 | * addressed PDP boundary (512GB for 4k pages), there will be more allocations | |
880 | * required by the caller, This is not currently possible, and the BUG in the | |
881 | * code will prevent it. | |
882 | * | |
883 | * Return: 0 if success; negative error code otherwise. | |
884 | */ | |
d4ec9da0 MT |
885 | static int |
886 | gen8_ppgtt_alloc_page_directories(struct i915_address_space *vm, | |
887 | struct i915_page_directory_pointer *pdp, | |
888 | uint64_t start, | |
889 | uint64_t length, | |
890 | unsigned long *new_pds) | |
bf2b4ed2 | 891 | { |
d4ec9da0 | 892 | struct drm_device *dev = vm->dev; |
d7b2633d | 893 | struct i915_page_directory *pd; |
69876bed MT |
894 | uint64_t temp; |
895 | uint32_t pdpe; | |
6ac18502 | 896 | uint32_t pdpes = I915_PDPES_PER_PDP(dev); |
69876bed | 897 | |
6ac18502 | 898 | WARN_ON(!bitmap_empty(new_pds, pdpes)); |
d7b2633d | 899 | |
d7b2633d | 900 | gen8_for_each_pdpe(pd, pdp, start, length, temp, pdpe) { |
6ac18502 | 901 | if (test_bit(pdpe, pdp->used_pdpes)) |
d7b2633d | 902 | continue; |
33c8819f | 903 | |
8a1ebd74 | 904 | pd = alloc_pd(dev); |
d7b2633d | 905 | if (IS_ERR(pd)) |
d7b3de91 | 906 | goto unwind_out; |
69876bed | 907 | |
d4ec9da0 | 908 | gen8_initialize_pd(vm, pd); |
d7b2633d | 909 | pdp->page_directory[pdpe] = pd; |
966082c9 | 910 | __set_bit(pdpe, new_pds); |
4c06ec8d | 911 | trace_i915_page_directory_entry_alloc(vm, pdpe, start, GEN8_PDPE_SHIFT); |
d7b3de91 BW |
912 | } |
913 | ||
bf2b4ed2 | 914 | return 0; |
d7b3de91 BW |
915 | |
916 | unwind_out: | |
6ac18502 | 917 | for_each_set_bit(pdpe, new_pds, pdpes) |
a08e111a | 918 | free_pd(dev, pdp->page_directory[pdpe]); |
d7b3de91 BW |
919 | |
920 | return -ENOMEM; | |
bf2b4ed2 BW |
921 | } |
922 | ||
d7b2633d | 923 | static void |
6ac18502 MT |
924 | free_gen8_temp_bitmaps(unsigned long *new_pds, unsigned long **new_pts, |
925 | uint32_t pdpes) | |
d7b2633d MT |
926 | { |
927 | int i; | |
928 | ||
6ac18502 | 929 | for (i = 0; i < pdpes; i++) |
d7b2633d MT |
930 | kfree(new_pts[i]); |
931 | kfree(new_pts); | |
932 | kfree(new_pds); | |
933 | } | |
934 | ||
935 | /* Fills in the page directory bitmap, and the array of page tables bitmap. Both | |
936 | * of these are based on the number of PDPEs in the system. | |
937 | */ | |
938 | static | |
939 | int __must_check alloc_gen8_temp_bitmaps(unsigned long **new_pds, | |
6ac18502 MT |
940 | unsigned long ***new_pts, |
941 | uint32_t pdpes) | |
d7b2633d MT |
942 | { |
943 | int i; | |
944 | unsigned long *pds; | |
945 | unsigned long **pts; | |
946 | ||
6ac18502 | 947 | pds = kcalloc(BITS_TO_LONGS(pdpes), sizeof(unsigned long), GFP_KERNEL); |
d7b2633d MT |
948 | if (!pds) |
949 | return -ENOMEM; | |
950 | ||
6ac18502 | 951 | pts = kcalloc(pdpes, sizeof(unsigned long *), GFP_KERNEL); |
d7b2633d MT |
952 | if (!pts) { |
953 | kfree(pds); | |
954 | return -ENOMEM; | |
955 | } | |
956 | ||
6ac18502 | 957 | for (i = 0; i < pdpes; i++) { |
d7b2633d MT |
958 | pts[i] = kcalloc(BITS_TO_LONGS(I915_PDES), |
959 | sizeof(unsigned long), GFP_KERNEL); | |
960 | if (!pts[i]) | |
961 | goto err_out; | |
962 | } | |
963 | ||
964 | *new_pds = pds; | |
965 | *new_pts = pts; | |
966 | ||
967 | return 0; | |
968 | ||
969 | err_out: | |
6ac18502 | 970 | free_gen8_temp_bitmaps(pds, pts, pdpes); |
d7b2633d MT |
971 | return -ENOMEM; |
972 | } | |
973 | ||
5b7e4c9c MK |
974 | /* PDE TLBs are a pain to invalidate on GEN8+. When we modify |
975 | * the page table structures, we mark them dirty so that | |
976 | * context switching/execlist queuing code takes extra steps | |
977 | * to ensure that tlbs are flushed. | |
978 | */ | |
979 | static void mark_tlbs_dirty(struct i915_hw_ppgtt *ppgtt) | |
980 | { | |
981 | ppgtt->pd_dirty_rings = INTEL_INFO(ppgtt->base.dev)->ring_mask; | |
982 | } | |
983 | ||
e5815a2e | 984 | static int gen8_alloc_va_range(struct i915_address_space *vm, |
d4ec9da0 | 985 | uint64_t start, uint64_t length) |
bf2b4ed2 | 986 | { |
e5815a2e MT |
987 | struct i915_hw_ppgtt *ppgtt = |
988 | container_of(vm, struct i915_hw_ppgtt, base); | |
d7b2633d | 989 | unsigned long *new_page_dirs, **new_page_tables; |
d4ec9da0 MT |
990 | struct drm_device *dev = vm->dev; |
991 | struct i915_page_directory_pointer *pdp = &ppgtt->pdp; /* FIXME: 48b */ | |
5441f0cb | 992 | struct i915_page_directory *pd; |
33c8819f MT |
993 | const uint64_t orig_start = start; |
994 | const uint64_t orig_length = length; | |
5441f0cb MT |
995 | uint64_t temp; |
996 | uint32_t pdpe; | |
d4ec9da0 | 997 | uint32_t pdpes = I915_PDPES_PER_PDP(dev); |
bf2b4ed2 BW |
998 | int ret; |
999 | ||
d7b2633d MT |
1000 | /* Wrap is never okay since we can only represent 48b, and we don't |
1001 | * actually use the other side of the canonical address space. | |
1002 | */ | |
1003 | if (WARN_ON(start + length < start)) | |
a05d80ee MK |
1004 | return -ENODEV; |
1005 | ||
d4ec9da0 | 1006 | if (WARN_ON(start + length > vm->total)) |
a05d80ee | 1007 | return -ENODEV; |
d7b2633d | 1008 | |
6ac18502 | 1009 | ret = alloc_gen8_temp_bitmaps(&new_page_dirs, &new_page_tables, pdpes); |
bf2b4ed2 BW |
1010 | if (ret) |
1011 | return ret; | |
1012 | ||
d7b2633d | 1013 | /* Do the allocations first so we can easily bail out */ |
d4ec9da0 MT |
1014 | ret = gen8_ppgtt_alloc_page_directories(vm, pdp, start, length, |
1015 | new_page_dirs); | |
d7b2633d | 1016 | if (ret) { |
6ac18502 | 1017 | free_gen8_temp_bitmaps(new_page_dirs, new_page_tables, pdpes); |
d7b2633d MT |
1018 | return ret; |
1019 | } | |
1020 | ||
1021 | /* For every page directory referenced, allocate page tables */ | |
d4ec9da0 MT |
1022 | gen8_for_each_pdpe(pd, pdp, start, length, temp, pdpe) { |
1023 | ret = gen8_ppgtt_alloc_pagetabs(vm, pd, start, length, | |
d7b2633d | 1024 | new_page_tables[pdpe]); |
5441f0cb MT |
1025 | if (ret) |
1026 | goto err_out; | |
5441f0cb MT |
1027 | } |
1028 | ||
33c8819f MT |
1029 | start = orig_start; |
1030 | length = orig_length; | |
1031 | ||
d7b2633d MT |
1032 | /* Allocations have completed successfully, so set the bitmaps, and do |
1033 | * the mappings. */ | |
d4ec9da0 | 1034 | gen8_for_each_pdpe(pd, pdp, start, length, temp, pdpe) { |
d1c54acd | 1035 | gen8_pde_t *const page_directory = kmap_px(pd); |
33c8819f | 1036 | struct i915_page_table *pt; |
09120d4e | 1037 | uint64_t pd_len = length; |
33c8819f MT |
1038 | uint64_t pd_start = start; |
1039 | uint32_t pde; | |
1040 | ||
d7b2633d MT |
1041 | /* Every pd should be allocated, we just did that above. */ |
1042 | WARN_ON(!pd); | |
1043 | ||
1044 | gen8_for_each_pde(pt, pd, pd_start, pd_len, temp, pde) { | |
1045 | /* Same reasoning as pd */ | |
1046 | WARN_ON(!pt); | |
1047 | WARN_ON(!pd_len); | |
1048 | WARN_ON(!gen8_pte_count(pd_start, pd_len)); | |
1049 | ||
1050 | /* Set our used ptes within the page table */ | |
1051 | bitmap_set(pt->used_ptes, | |
1052 | gen8_pte_index(pd_start), | |
1053 | gen8_pte_count(pd_start, pd_len)); | |
1054 | ||
1055 | /* Our pde is now pointing to the pagetable, pt */ | |
966082c9 | 1056 | __set_bit(pde, pd->used_pdes); |
d7b2633d MT |
1057 | |
1058 | /* Map the PDE to the page table */ | |
fe36f55d MK |
1059 | page_directory[pde] = gen8_pde_encode(px_dma(pt), |
1060 | I915_CACHE_LLC); | |
4c06ec8d MT |
1061 | trace_i915_page_table_entry_map(&ppgtt->base, pde, pt, |
1062 | gen8_pte_index(start), | |
1063 | gen8_pte_count(start, length), | |
1064 | GEN8_PTES); | |
d7b2633d MT |
1065 | |
1066 | /* NB: We haven't yet mapped ptes to pages. At this | |
1067 | * point we're still relying on insert_entries() */ | |
33c8819f | 1068 | } |
d7b2633d | 1069 | |
d1c54acd | 1070 | kunmap_px(ppgtt, page_directory); |
d4ec9da0 | 1071 | __set_bit(pdpe, pdp->used_pdpes); |
33c8819f MT |
1072 | } |
1073 | ||
6ac18502 | 1074 | free_gen8_temp_bitmaps(new_page_dirs, new_page_tables, pdpes); |
5b7e4c9c | 1075 | mark_tlbs_dirty(ppgtt); |
d7b3de91 | 1076 | return 0; |
bf2b4ed2 | 1077 | |
d7b3de91 | 1078 | err_out: |
d7b2633d MT |
1079 | while (pdpe--) { |
1080 | for_each_set_bit(temp, new_page_tables[pdpe], I915_PDES) | |
d4ec9da0 | 1081 | free_pt(dev, pdp->page_directory[pdpe]->page_table[temp]); |
d7b2633d MT |
1082 | } |
1083 | ||
6ac18502 | 1084 | for_each_set_bit(pdpe, new_page_dirs, pdpes) |
d4ec9da0 | 1085 | free_pd(dev, pdp->page_directory[pdpe]); |
d7b2633d | 1086 | |
6ac18502 | 1087 | free_gen8_temp_bitmaps(new_page_dirs, new_page_tables, pdpes); |
5b7e4c9c | 1088 | mark_tlbs_dirty(ppgtt); |
bf2b4ed2 BW |
1089 | return ret; |
1090 | } | |
1091 | ||
eb0b44ad | 1092 | /* |
f3a964b9 BW |
1093 | * GEN8 legacy ppgtt programming is accomplished through a max 4 PDP registers |
1094 | * with a net effect resembling a 2-level page table in normal x86 terms. Each | |
1095 | * PDP represents 1GB of memory 4 * 512 * 512 * 4096 = 4GB legacy 32b address | |
1096 | * space. | |
37aca44a | 1097 | * |
f3a964b9 | 1098 | */ |
5c5f6457 | 1099 | static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt) |
37aca44a | 1100 | { |
8776f02b | 1101 | int ret; |
7cb6d7ac | 1102 | |
8776f02b MK |
1103 | ret = gen8_init_scratch(&ppgtt->base); |
1104 | if (ret) | |
1105 | return ret; | |
69876bed | 1106 | |
d7b2633d | 1107 | ppgtt->base.start = 0; |
d7b2633d | 1108 | ppgtt->base.cleanup = gen8_ppgtt_cleanup; |
5c5f6457 | 1109 | ppgtt->base.allocate_va_range = gen8_alloc_va_range; |
d7b2633d | 1110 | ppgtt->base.insert_entries = gen8_ppgtt_insert_entries; |
c7e16f22 | 1111 | ppgtt->base.clear_range = gen8_ppgtt_clear_range; |
777dc5bb DV |
1112 | ppgtt->base.unbind_vma = ppgtt_unbind_vma; |
1113 | ppgtt->base.bind_vma = ppgtt_bind_vma; | |
d7b2633d MT |
1114 | |
1115 | ppgtt->switch_mm = gen8_mm_switch; | |
1116 | ||
81ba8aef MT |
1117 | if (!USES_FULL_48BIT_PPGTT(ppgtt->base.dev)) { |
1118 | ret = __pdp_init(false, &ppgtt->pdp); | |
6ac18502 | 1119 | |
81ba8aef MT |
1120 | if (ret) |
1121 | goto free_scratch; | |
1122 | ||
1123 | ppgtt->base.total = 1ULL << 32; | |
1124 | if (IS_ENABLED(CONFIG_X86_32)) | |
1125 | /* While we have a proliferation of size_t variables | |
1126 | * we cannot represent the full ppgtt size on 32bit, | |
1127 | * so limit it to the same size as the GGTT (currently | |
1128 | * 2GiB). | |
1129 | */ | |
1130 | ppgtt->base.total = to_i915(ppgtt->base.dev)->gtt.base.total; | |
1131 | } else { | |
1132 | ppgtt->base.total = 1ULL << 48; | |
1133 | ret = -EPERM; /* Not yet implemented */ | |
6ac18502 | 1134 | goto free_scratch; |
81ba8aef | 1135 | } |
6ac18502 | 1136 | |
d7b2633d | 1137 | return 0; |
6ac18502 MT |
1138 | |
1139 | free_scratch: | |
1140 | gen8_free_scratch(&ppgtt->base); | |
1141 | return ret; | |
d7b2633d MT |
1142 | } |
1143 | ||
87d60b63 BW |
1144 | static void gen6_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m) |
1145 | { | |
87d60b63 | 1146 | struct i915_address_space *vm = &ppgtt->base; |
09942c65 | 1147 | struct i915_page_table *unused; |
07749ef3 | 1148 | gen6_pte_t scratch_pte; |
87d60b63 | 1149 | uint32_t pd_entry; |
09942c65 MT |
1150 | uint32_t pte, pde, temp; |
1151 | uint32_t start = ppgtt->base.start, length = ppgtt->base.total; | |
87d60b63 | 1152 | |
79ab9370 MK |
1153 | scratch_pte = vm->pte_encode(px_dma(vm->scratch_page), |
1154 | I915_CACHE_LLC, true, 0); | |
87d60b63 | 1155 | |
09942c65 | 1156 | gen6_for_each_pde(unused, &ppgtt->pd, start, length, temp, pde) { |
87d60b63 | 1157 | u32 expected; |
07749ef3 | 1158 | gen6_pte_t *pt_vaddr; |
567047be | 1159 | const dma_addr_t pt_addr = px_dma(ppgtt->pd.page_table[pde]); |
09942c65 | 1160 | pd_entry = readl(ppgtt->pd_addr + pde); |
87d60b63 BW |
1161 | expected = (GEN6_PDE_ADDR_ENCODE(pt_addr) | GEN6_PDE_VALID); |
1162 | ||
1163 | if (pd_entry != expected) | |
1164 | seq_printf(m, "\tPDE #%d mismatch: Actual PDE: %x Expected PDE: %x\n", | |
1165 | pde, | |
1166 | pd_entry, | |
1167 | expected); | |
1168 | seq_printf(m, "\tPDE: %x\n", pd_entry); | |
1169 | ||
d1c54acd MK |
1170 | pt_vaddr = kmap_px(ppgtt->pd.page_table[pde]); |
1171 | ||
07749ef3 | 1172 | for (pte = 0; pte < GEN6_PTES; pte+=4) { |
87d60b63 | 1173 | unsigned long va = |
07749ef3 | 1174 | (pde * PAGE_SIZE * GEN6_PTES) + |
87d60b63 BW |
1175 | (pte * PAGE_SIZE); |
1176 | int i; | |
1177 | bool found = false; | |
1178 | for (i = 0; i < 4; i++) | |
1179 | if (pt_vaddr[pte + i] != scratch_pte) | |
1180 | found = true; | |
1181 | if (!found) | |
1182 | continue; | |
1183 | ||
1184 | seq_printf(m, "\t\t0x%lx [%03d,%04d]: =", va, pde, pte); | |
1185 | for (i = 0; i < 4; i++) { | |
1186 | if (pt_vaddr[pte + i] != scratch_pte) | |
1187 | seq_printf(m, " %08x", pt_vaddr[pte + i]); | |
1188 | else | |
1189 | seq_puts(m, " SCRATCH "); | |
1190 | } | |
1191 | seq_puts(m, "\n"); | |
1192 | } | |
d1c54acd | 1193 | kunmap_px(ppgtt, pt_vaddr); |
87d60b63 BW |
1194 | } |
1195 | } | |
1196 | ||
678d96fb | 1197 | /* Write pde (index) from the page directory @pd to the page table @pt */ |
ec565b3c MT |
1198 | static void gen6_write_pde(struct i915_page_directory *pd, |
1199 | const int pde, struct i915_page_table *pt) | |
6197349b | 1200 | { |
678d96fb BW |
1201 | /* Caller needs to make sure the write completes if necessary */ |
1202 | struct i915_hw_ppgtt *ppgtt = | |
1203 | container_of(pd, struct i915_hw_ppgtt, pd); | |
1204 | u32 pd_entry; | |
6197349b | 1205 | |
567047be | 1206 | pd_entry = GEN6_PDE_ADDR_ENCODE(px_dma(pt)); |
678d96fb | 1207 | pd_entry |= GEN6_PDE_VALID; |
6197349b | 1208 | |
678d96fb BW |
1209 | writel(pd_entry, ppgtt->pd_addr + pde); |
1210 | } | |
6197349b | 1211 | |
678d96fb BW |
1212 | /* Write all the page tables found in the ppgtt structure to incrementing page |
1213 | * directories. */ | |
1214 | static void gen6_write_page_range(struct drm_i915_private *dev_priv, | |
ec565b3c | 1215 | struct i915_page_directory *pd, |
678d96fb BW |
1216 | uint32_t start, uint32_t length) |
1217 | { | |
ec565b3c | 1218 | struct i915_page_table *pt; |
678d96fb BW |
1219 | uint32_t pde, temp; |
1220 | ||
1221 | gen6_for_each_pde(pt, pd, start, length, temp, pde) | |
1222 | gen6_write_pde(pd, pde, pt); | |
1223 | ||
1224 | /* Make sure write is complete before other code can use this page | |
1225 | * table. Also require for WC mapped PTEs */ | |
1226 | readl(dev_priv->gtt.gsm); | |
3e302542 BW |
1227 | } |
1228 | ||
b4a74e3a | 1229 | static uint32_t get_pd_offset(struct i915_hw_ppgtt *ppgtt) |
3e302542 | 1230 | { |
44159ddb | 1231 | BUG_ON(ppgtt->pd.base.ggtt_offset & 0x3f); |
b4a74e3a | 1232 | |
44159ddb | 1233 | return (ppgtt->pd.base.ggtt_offset / 64) << 16; |
b4a74e3a BW |
1234 | } |
1235 | ||
90252e5c | 1236 | static int hsw_mm_switch(struct i915_hw_ppgtt *ppgtt, |
e85b26dc | 1237 | struct drm_i915_gem_request *req) |
90252e5c | 1238 | { |
e85b26dc | 1239 | struct intel_engine_cs *ring = req->ring; |
90252e5c BW |
1240 | int ret; |
1241 | ||
90252e5c | 1242 | /* NB: TLBs must be flushed and invalidated before a switch */ |
a84c3ae1 | 1243 | ret = ring->flush(req, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
90252e5c BW |
1244 | if (ret) |
1245 | return ret; | |
1246 | ||
5fb9de1a | 1247 | ret = intel_ring_begin(req, 6); |
90252e5c BW |
1248 | if (ret) |
1249 | return ret; | |
1250 | ||
1251 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(2)); | |
1252 | intel_ring_emit(ring, RING_PP_DIR_DCLV(ring)); | |
1253 | intel_ring_emit(ring, PP_DIR_DCLV_2G); | |
1254 | intel_ring_emit(ring, RING_PP_DIR_BASE(ring)); | |
1255 | intel_ring_emit(ring, get_pd_offset(ppgtt)); | |
1256 | intel_ring_emit(ring, MI_NOOP); | |
1257 | intel_ring_advance(ring); | |
1258 | ||
1259 | return 0; | |
1260 | } | |
1261 | ||
71ba2d64 | 1262 | static int vgpu_mm_switch(struct i915_hw_ppgtt *ppgtt, |
e85b26dc | 1263 | struct drm_i915_gem_request *req) |
71ba2d64 | 1264 | { |
e85b26dc | 1265 | struct intel_engine_cs *ring = req->ring; |
71ba2d64 YZ |
1266 | struct drm_i915_private *dev_priv = to_i915(ppgtt->base.dev); |
1267 | ||
1268 | I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G); | |
1269 | I915_WRITE(RING_PP_DIR_BASE(ring), get_pd_offset(ppgtt)); | |
1270 | return 0; | |
1271 | } | |
1272 | ||
48a10389 | 1273 | static int gen7_mm_switch(struct i915_hw_ppgtt *ppgtt, |
e85b26dc | 1274 | struct drm_i915_gem_request *req) |
48a10389 | 1275 | { |
e85b26dc | 1276 | struct intel_engine_cs *ring = req->ring; |
48a10389 BW |
1277 | int ret; |
1278 | ||
48a10389 | 1279 | /* NB: TLBs must be flushed and invalidated before a switch */ |
a84c3ae1 | 1280 | ret = ring->flush(req, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
48a10389 BW |
1281 | if (ret) |
1282 | return ret; | |
1283 | ||
5fb9de1a | 1284 | ret = intel_ring_begin(req, 6); |
48a10389 BW |
1285 | if (ret) |
1286 | return ret; | |
1287 | ||
1288 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(2)); | |
1289 | intel_ring_emit(ring, RING_PP_DIR_DCLV(ring)); | |
1290 | intel_ring_emit(ring, PP_DIR_DCLV_2G); | |
1291 | intel_ring_emit(ring, RING_PP_DIR_BASE(ring)); | |
1292 | intel_ring_emit(ring, get_pd_offset(ppgtt)); | |
1293 | intel_ring_emit(ring, MI_NOOP); | |
1294 | intel_ring_advance(ring); | |
1295 | ||
90252e5c BW |
1296 | /* XXX: RCS is the only one to auto invalidate the TLBs? */ |
1297 | if (ring->id != RCS) { | |
a84c3ae1 | 1298 | ret = ring->flush(req, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
90252e5c BW |
1299 | if (ret) |
1300 | return ret; | |
1301 | } | |
1302 | ||
48a10389 BW |
1303 | return 0; |
1304 | } | |
1305 | ||
eeb9488e | 1306 | static int gen6_mm_switch(struct i915_hw_ppgtt *ppgtt, |
e85b26dc | 1307 | struct drm_i915_gem_request *req) |
eeb9488e | 1308 | { |
e85b26dc | 1309 | struct intel_engine_cs *ring = req->ring; |
eeb9488e BW |
1310 | struct drm_device *dev = ppgtt->base.dev; |
1311 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1312 | ||
48a10389 | 1313 | |
eeb9488e BW |
1314 | I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G); |
1315 | I915_WRITE(RING_PP_DIR_BASE(ring), get_pd_offset(ppgtt)); | |
1316 | ||
1317 | POSTING_READ(RING_PP_DIR_DCLV(ring)); | |
1318 | ||
1319 | return 0; | |
1320 | } | |
1321 | ||
82460d97 | 1322 | static void gen8_ppgtt_enable(struct drm_device *dev) |
eeb9488e | 1323 | { |
eeb9488e | 1324 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4872ba6 | 1325 | struct intel_engine_cs *ring; |
82460d97 | 1326 | int j; |
3e302542 | 1327 | |
eeb9488e BW |
1328 | for_each_ring(ring, dev_priv, j) { |
1329 | I915_WRITE(RING_MODE_GEN7(ring), | |
1330 | _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE)); | |
eeb9488e | 1331 | } |
eeb9488e | 1332 | } |
6197349b | 1333 | |
82460d97 | 1334 | static void gen7_ppgtt_enable(struct drm_device *dev) |
3e302542 | 1335 | { |
50227e1c | 1336 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4872ba6 | 1337 | struct intel_engine_cs *ring; |
b4a74e3a | 1338 | uint32_t ecochk, ecobits; |
3e302542 | 1339 | int i; |
6197349b | 1340 | |
b4a74e3a BW |
1341 | ecobits = I915_READ(GAC_ECO_BITS); |
1342 | I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_PPGTT_CACHE64B); | |
a65c2fcd | 1343 | |
b4a74e3a BW |
1344 | ecochk = I915_READ(GAM_ECOCHK); |
1345 | if (IS_HASWELL(dev)) { | |
1346 | ecochk |= ECOCHK_PPGTT_WB_HSW; | |
1347 | } else { | |
1348 | ecochk |= ECOCHK_PPGTT_LLC_IVB; | |
1349 | ecochk &= ~ECOCHK_PPGTT_GFDT_IVB; | |
1350 | } | |
1351 | I915_WRITE(GAM_ECOCHK, ecochk); | |
a65c2fcd | 1352 | |
b4a74e3a | 1353 | for_each_ring(ring, dev_priv, i) { |
6197349b | 1354 | /* GFX_MODE is per-ring on gen7+ */ |
b4a74e3a BW |
1355 | I915_WRITE(RING_MODE_GEN7(ring), |
1356 | _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE)); | |
6197349b | 1357 | } |
b4a74e3a | 1358 | } |
6197349b | 1359 | |
82460d97 | 1360 | static void gen6_ppgtt_enable(struct drm_device *dev) |
b4a74e3a | 1361 | { |
50227e1c | 1362 | struct drm_i915_private *dev_priv = dev->dev_private; |
b4a74e3a | 1363 | uint32_t ecochk, gab_ctl, ecobits; |
a65c2fcd | 1364 | |
b4a74e3a BW |
1365 | ecobits = I915_READ(GAC_ECO_BITS); |
1366 | I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_SNB_BIT | | |
1367 | ECOBITS_PPGTT_CACHE64B); | |
6197349b | 1368 | |
b4a74e3a BW |
1369 | gab_ctl = I915_READ(GAB_CTL); |
1370 | I915_WRITE(GAB_CTL, gab_ctl | GAB_CTL_CONT_AFTER_PAGEFAULT); | |
1371 | ||
1372 | ecochk = I915_READ(GAM_ECOCHK); | |
1373 | I915_WRITE(GAM_ECOCHK, ecochk | ECOCHK_SNB_BIT | ECOCHK_PPGTT_CACHE64B); | |
1374 | ||
1375 | I915_WRITE(GFX_MODE, _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE)); | |
6197349b BW |
1376 | } |
1377 | ||
1d2a314c | 1378 | /* PPGTT support for Sandybdrige/Gen6 and later */ |
853ba5d2 | 1379 | static void gen6_ppgtt_clear_range(struct i915_address_space *vm, |
782f1495 BW |
1380 | uint64_t start, |
1381 | uint64_t length, | |
828c7908 | 1382 | bool use_scratch) |
1d2a314c | 1383 | { |
853ba5d2 BW |
1384 | struct i915_hw_ppgtt *ppgtt = |
1385 | container_of(vm, struct i915_hw_ppgtt, base); | |
07749ef3 | 1386 | gen6_pte_t *pt_vaddr, scratch_pte; |
782f1495 BW |
1387 | unsigned first_entry = start >> PAGE_SHIFT; |
1388 | unsigned num_entries = length >> PAGE_SHIFT; | |
07749ef3 MT |
1389 | unsigned act_pt = first_entry / GEN6_PTES; |
1390 | unsigned first_pte = first_entry % GEN6_PTES; | |
7bddb01f | 1391 | unsigned last_pte, i; |
1d2a314c | 1392 | |
c114f76a MK |
1393 | scratch_pte = vm->pte_encode(px_dma(vm->scratch_page), |
1394 | I915_CACHE_LLC, true, 0); | |
1d2a314c | 1395 | |
7bddb01f DV |
1396 | while (num_entries) { |
1397 | last_pte = first_pte + num_entries; | |
07749ef3 MT |
1398 | if (last_pte > GEN6_PTES) |
1399 | last_pte = GEN6_PTES; | |
7bddb01f | 1400 | |
d1c54acd | 1401 | pt_vaddr = kmap_px(ppgtt->pd.page_table[act_pt]); |
1d2a314c | 1402 | |
7bddb01f DV |
1403 | for (i = first_pte; i < last_pte; i++) |
1404 | pt_vaddr[i] = scratch_pte; | |
1d2a314c | 1405 | |
d1c54acd | 1406 | kunmap_px(ppgtt, pt_vaddr); |
1d2a314c | 1407 | |
7bddb01f DV |
1408 | num_entries -= last_pte - first_pte; |
1409 | first_pte = 0; | |
a15326a5 | 1410 | act_pt++; |
7bddb01f | 1411 | } |
1d2a314c DV |
1412 | } |
1413 | ||
853ba5d2 | 1414 | static void gen6_ppgtt_insert_entries(struct i915_address_space *vm, |
def886c3 | 1415 | struct sg_table *pages, |
782f1495 | 1416 | uint64_t start, |
24f3a8cf | 1417 | enum i915_cache_level cache_level, u32 flags) |
def886c3 | 1418 | { |
853ba5d2 BW |
1419 | struct i915_hw_ppgtt *ppgtt = |
1420 | container_of(vm, struct i915_hw_ppgtt, base); | |
07749ef3 | 1421 | gen6_pte_t *pt_vaddr; |
782f1495 | 1422 | unsigned first_entry = start >> PAGE_SHIFT; |
07749ef3 MT |
1423 | unsigned act_pt = first_entry / GEN6_PTES; |
1424 | unsigned act_pte = first_entry % GEN6_PTES; | |
6e995e23 ID |
1425 | struct sg_page_iter sg_iter; |
1426 | ||
cc79714f | 1427 | pt_vaddr = NULL; |
6e995e23 | 1428 | for_each_sg_page(pages->sgl, &sg_iter, pages->nents, 0) { |
cc79714f | 1429 | if (pt_vaddr == NULL) |
d1c54acd | 1430 | pt_vaddr = kmap_px(ppgtt->pd.page_table[act_pt]); |
6e995e23 | 1431 | |
cc79714f CW |
1432 | pt_vaddr[act_pte] = |
1433 | vm->pte_encode(sg_page_iter_dma_address(&sg_iter), | |
24f3a8cf AG |
1434 | cache_level, true, flags); |
1435 | ||
07749ef3 | 1436 | if (++act_pte == GEN6_PTES) { |
d1c54acd | 1437 | kunmap_px(ppgtt, pt_vaddr); |
cc79714f | 1438 | pt_vaddr = NULL; |
a15326a5 | 1439 | act_pt++; |
6e995e23 | 1440 | act_pte = 0; |
def886c3 | 1441 | } |
def886c3 | 1442 | } |
cc79714f | 1443 | if (pt_vaddr) |
d1c54acd | 1444 | kunmap_px(ppgtt, pt_vaddr); |
def886c3 DV |
1445 | } |
1446 | ||
678d96fb | 1447 | static int gen6_alloc_va_range(struct i915_address_space *vm, |
a05d80ee | 1448 | uint64_t start_in, uint64_t length_in) |
678d96fb | 1449 | { |
4933d519 MT |
1450 | DECLARE_BITMAP(new_page_tables, I915_PDES); |
1451 | struct drm_device *dev = vm->dev; | |
1452 | struct drm_i915_private *dev_priv = dev->dev_private; | |
678d96fb BW |
1453 | struct i915_hw_ppgtt *ppgtt = |
1454 | container_of(vm, struct i915_hw_ppgtt, base); | |
ec565b3c | 1455 | struct i915_page_table *pt; |
a05d80ee | 1456 | uint32_t start, length, start_save, length_save; |
678d96fb | 1457 | uint32_t pde, temp; |
4933d519 MT |
1458 | int ret; |
1459 | ||
a05d80ee MK |
1460 | if (WARN_ON(start_in + length_in > ppgtt->base.total)) |
1461 | return -ENODEV; | |
1462 | ||
1463 | start = start_save = start_in; | |
1464 | length = length_save = length_in; | |
4933d519 MT |
1465 | |
1466 | bitmap_zero(new_page_tables, I915_PDES); | |
1467 | ||
1468 | /* The allocation is done in two stages so that we can bail out with | |
1469 | * minimal amount of pain. The first stage finds new page tables that | |
1470 | * need allocation. The second stage marks use ptes within the page | |
1471 | * tables. | |
1472 | */ | |
1473 | gen6_for_each_pde(pt, &ppgtt->pd, start, length, temp, pde) { | |
79ab9370 | 1474 | if (pt != vm->scratch_pt) { |
4933d519 MT |
1475 | WARN_ON(bitmap_empty(pt->used_ptes, GEN6_PTES)); |
1476 | continue; | |
1477 | } | |
1478 | ||
1479 | /* We've already allocated a page table */ | |
1480 | WARN_ON(!bitmap_empty(pt->used_ptes, GEN6_PTES)); | |
1481 | ||
8a1ebd74 | 1482 | pt = alloc_pt(dev); |
4933d519 MT |
1483 | if (IS_ERR(pt)) { |
1484 | ret = PTR_ERR(pt); | |
1485 | goto unwind_out; | |
1486 | } | |
1487 | ||
1488 | gen6_initialize_pt(vm, pt); | |
1489 | ||
1490 | ppgtt->pd.page_table[pde] = pt; | |
966082c9 | 1491 | __set_bit(pde, new_page_tables); |
72744cb1 | 1492 | trace_i915_page_table_entry_alloc(vm, pde, start, GEN6_PDE_SHIFT); |
4933d519 MT |
1493 | } |
1494 | ||
1495 | start = start_save; | |
1496 | length = length_save; | |
678d96fb BW |
1497 | |
1498 | gen6_for_each_pde(pt, &ppgtt->pd, start, length, temp, pde) { | |
1499 | DECLARE_BITMAP(tmp_bitmap, GEN6_PTES); | |
1500 | ||
1501 | bitmap_zero(tmp_bitmap, GEN6_PTES); | |
1502 | bitmap_set(tmp_bitmap, gen6_pte_index(start), | |
1503 | gen6_pte_count(start, length)); | |
1504 | ||
966082c9 | 1505 | if (__test_and_clear_bit(pde, new_page_tables)) |
4933d519 MT |
1506 | gen6_write_pde(&ppgtt->pd, pde, pt); |
1507 | ||
72744cb1 MT |
1508 | trace_i915_page_table_entry_map(vm, pde, pt, |
1509 | gen6_pte_index(start), | |
1510 | gen6_pte_count(start, length), | |
1511 | GEN6_PTES); | |
4933d519 | 1512 | bitmap_or(pt->used_ptes, tmp_bitmap, pt->used_ptes, |
678d96fb BW |
1513 | GEN6_PTES); |
1514 | } | |
1515 | ||
4933d519 MT |
1516 | WARN_ON(!bitmap_empty(new_page_tables, I915_PDES)); |
1517 | ||
1518 | /* Make sure write is complete before other code can use this page | |
1519 | * table. Also require for WC mapped PTEs */ | |
1520 | readl(dev_priv->gtt.gsm); | |
1521 | ||
563222a7 | 1522 | mark_tlbs_dirty(ppgtt); |
678d96fb | 1523 | return 0; |
4933d519 MT |
1524 | |
1525 | unwind_out: | |
1526 | for_each_set_bit(pde, new_page_tables, I915_PDES) { | |
ec565b3c | 1527 | struct i915_page_table *pt = ppgtt->pd.page_table[pde]; |
4933d519 | 1528 | |
79ab9370 | 1529 | ppgtt->pd.page_table[pde] = vm->scratch_pt; |
a08e111a | 1530 | free_pt(vm->dev, pt); |
4933d519 MT |
1531 | } |
1532 | ||
1533 | mark_tlbs_dirty(ppgtt); | |
1534 | return ret; | |
678d96fb BW |
1535 | } |
1536 | ||
8776f02b MK |
1537 | static int gen6_init_scratch(struct i915_address_space *vm) |
1538 | { | |
1539 | struct drm_device *dev = vm->dev; | |
1540 | ||
1541 | vm->scratch_page = alloc_scratch_page(dev); | |
1542 | if (IS_ERR(vm->scratch_page)) | |
1543 | return PTR_ERR(vm->scratch_page); | |
1544 | ||
1545 | vm->scratch_pt = alloc_pt(dev); | |
1546 | if (IS_ERR(vm->scratch_pt)) { | |
1547 | free_scratch_page(dev, vm->scratch_page); | |
1548 | return PTR_ERR(vm->scratch_pt); | |
1549 | } | |
1550 | ||
1551 | gen6_initialize_pt(vm, vm->scratch_pt); | |
1552 | ||
1553 | return 0; | |
1554 | } | |
1555 | ||
1556 | static void gen6_free_scratch(struct i915_address_space *vm) | |
1557 | { | |
1558 | struct drm_device *dev = vm->dev; | |
1559 | ||
1560 | free_pt(dev, vm->scratch_pt); | |
1561 | free_scratch_page(dev, vm->scratch_page); | |
1562 | } | |
1563 | ||
061dd493 | 1564 | static void gen6_ppgtt_cleanup(struct i915_address_space *vm) |
a00d825d | 1565 | { |
061dd493 DV |
1566 | struct i915_hw_ppgtt *ppgtt = |
1567 | container_of(vm, struct i915_hw_ppgtt, base); | |
09942c65 MT |
1568 | struct i915_page_table *pt; |
1569 | uint32_t pde; | |
4933d519 | 1570 | |
061dd493 DV |
1571 | drm_mm_remove_node(&ppgtt->node); |
1572 | ||
09942c65 | 1573 | gen6_for_all_pdes(pt, ppgtt, pde) { |
79ab9370 | 1574 | if (pt != vm->scratch_pt) |
a08e111a | 1575 | free_pt(ppgtt->base.dev, pt); |
4933d519 | 1576 | } |
06fda602 | 1577 | |
8776f02b | 1578 | gen6_free_scratch(vm); |
3440d265 DV |
1579 | } |
1580 | ||
b146520f | 1581 | static int gen6_ppgtt_allocate_page_directories(struct i915_hw_ppgtt *ppgtt) |
3440d265 | 1582 | { |
8776f02b | 1583 | struct i915_address_space *vm = &ppgtt->base; |
853ba5d2 | 1584 | struct drm_device *dev = ppgtt->base.dev; |
1d2a314c | 1585 | struct drm_i915_private *dev_priv = dev->dev_private; |
e3cc1995 | 1586 | bool retried = false; |
b146520f | 1587 | int ret; |
1d2a314c | 1588 | |
c8d4c0d6 BW |
1589 | /* PPGTT PDEs reside in the GGTT and consists of 512 entries. The |
1590 | * allocator works in address space sizes, so it's multiplied by page | |
1591 | * size. We allocate at the top of the GTT to avoid fragmentation. | |
1592 | */ | |
1593 | BUG_ON(!drm_mm_initialized(&dev_priv->gtt.base.mm)); | |
4933d519 | 1594 | |
8776f02b MK |
1595 | ret = gen6_init_scratch(vm); |
1596 | if (ret) | |
1597 | return ret; | |
4933d519 | 1598 | |
e3cc1995 | 1599 | alloc: |
c8d4c0d6 BW |
1600 | ret = drm_mm_insert_node_in_range_generic(&dev_priv->gtt.base.mm, |
1601 | &ppgtt->node, GEN6_PD_SIZE, | |
1602 | GEN6_PD_ALIGN, 0, | |
1603 | 0, dev_priv->gtt.base.total, | |
3e8b5ae9 | 1604 | DRM_MM_TOPDOWN); |
e3cc1995 BW |
1605 | if (ret == -ENOSPC && !retried) { |
1606 | ret = i915_gem_evict_something(dev, &dev_priv->gtt.base, | |
1607 | GEN6_PD_SIZE, GEN6_PD_ALIGN, | |
d23db88c CW |
1608 | I915_CACHE_NONE, |
1609 | 0, dev_priv->gtt.base.total, | |
1610 | 0); | |
e3cc1995 | 1611 | if (ret) |
678d96fb | 1612 | goto err_out; |
e3cc1995 BW |
1613 | |
1614 | retried = true; | |
1615 | goto alloc; | |
1616 | } | |
c8d4c0d6 | 1617 | |
c8c26622 | 1618 | if (ret) |
678d96fb BW |
1619 | goto err_out; |
1620 | ||
c8c26622 | 1621 | |
c8d4c0d6 BW |
1622 | if (ppgtt->node.start < dev_priv->gtt.mappable_end) |
1623 | DRM_DEBUG("Forced to use aperture for PDEs\n"); | |
1d2a314c | 1624 | |
c8c26622 | 1625 | return 0; |
678d96fb BW |
1626 | |
1627 | err_out: | |
8776f02b | 1628 | gen6_free_scratch(vm); |
678d96fb | 1629 | return ret; |
b146520f BW |
1630 | } |
1631 | ||
b146520f BW |
1632 | static int gen6_ppgtt_alloc(struct i915_hw_ppgtt *ppgtt) |
1633 | { | |
2f2cf682 | 1634 | return gen6_ppgtt_allocate_page_directories(ppgtt); |
4933d519 | 1635 | } |
06dc68d6 | 1636 | |
4933d519 MT |
1637 | static void gen6_scratch_va_range(struct i915_hw_ppgtt *ppgtt, |
1638 | uint64_t start, uint64_t length) | |
1639 | { | |
ec565b3c | 1640 | struct i915_page_table *unused; |
4933d519 | 1641 | uint32_t pde, temp; |
1d2a314c | 1642 | |
4933d519 | 1643 | gen6_for_each_pde(unused, &ppgtt->pd, start, length, temp, pde) |
79ab9370 | 1644 | ppgtt->pd.page_table[pde] = ppgtt->base.scratch_pt; |
b146520f BW |
1645 | } |
1646 | ||
5c5f6457 | 1647 | static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt) |
b146520f BW |
1648 | { |
1649 | struct drm_device *dev = ppgtt->base.dev; | |
1650 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1651 | int ret; | |
1652 | ||
1653 | ppgtt->base.pte_encode = dev_priv->gtt.base.pte_encode; | |
1654 | if (IS_GEN6(dev)) { | |
b146520f BW |
1655 | ppgtt->switch_mm = gen6_mm_switch; |
1656 | } else if (IS_HASWELL(dev)) { | |
b146520f BW |
1657 | ppgtt->switch_mm = hsw_mm_switch; |
1658 | } else if (IS_GEN7(dev)) { | |
b146520f BW |
1659 | ppgtt->switch_mm = gen7_mm_switch; |
1660 | } else | |
1661 | BUG(); | |
1662 | ||
71ba2d64 YZ |
1663 | if (intel_vgpu_active(dev)) |
1664 | ppgtt->switch_mm = vgpu_mm_switch; | |
1665 | ||
b146520f BW |
1666 | ret = gen6_ppgtt_alloc(ppgtt); |
1667 | if (ret) | |
1668 | return ret; | |
1669 | ||
5c5f6457 | 1670 | ppgtt->base.allocate_va_range = gen6_alloc_va_range; |
b146520f BW |
1671 | ppgtt->base.clear_range = gen6_ppgtt_clear_range; |
1672 | ppgtt->base.insert_entries = gen6_ppgtt_insert_entries; | |
777dc5bb DV |
1673 | ppgtt->base.unbind_vma = ppgtt_unbind_vma; |
1674 | ppgtt->base.bind_vma = ppgtt_bind_vma; | |
b146520f | 1675 | ppgtt->base.cleanup = gen6_ppgtt_cleanup; |
b146520f | 1676 | ppgtt->base.start = 0; |
09942c65 | 1677 | ppgtt->base.total = I915_PDES * GEN6_PTES * PAGE_SIZE; |
87d60b63 | 1678 | ppgtt->debug_dump = gen6_dump_ppgtt; |
1d2a314c | 1679 | |
44159ddb | 1680 | ppgtt->pd.base.ggtt_offset = |
07749ef3 | 1681 | ppgtt->node.start / PAGE_SIZE * sizeof(gen6_pte_t); |
1d2a314c | 1682 | |
678d96fb | 1683 | ppgtt->pd_addr = (gen6_pte_t __iomem *)dev_priv->gtt.gsm + |
44159ddb | 1684 | ppgtt->pd.base.ggtt_offset / sizeof(gen6_pte_t); |
678d96fb | 1685 | |
5c5f6457 | 1686 | gen6_scratch_va_range(ppgtt, 0, ppgtt->base.total); |
1d2a314c | 1687 | |
678d96fb BW |
1688 | gen6_write_page_range(dev_priv, &ppgtt->pd, 0, ppgtt->base.total); |
1689 | ||
440fd528 | 1690 | DRM_DEBUG_DRIVER("Allocated pde space (%lldM) at GTT entry: %llx\n", |
b146520f BW |
1691 | ppgtt->node.size >> 20, |
1692 | ppgtt->node.start / PAGE_SIZE); | |
3440d265 | 1693 | |
fa76da34 | 1694 | DRM_DEBUG("Adding PPGTT at offset %x\n", |
44159ddb | 1695 | ppgtt->pd.base.ggtt_offset << 10); |
fa76da34 | 1696 | |
b146520f | 1697 | return 0; |
3440d265 DV |
1698 | } |
1699 | ||
5c5f6457 | 1700 | static int __hw_ppgtt_init(struct drm_device *dev, struct i915_hw_ppgtt *ppgtt) |
3440d265 | 1701 | { |
853ba5d2 | 1702 | ppgtt->base.dev = dev; |
3440d265 | 1703 | |
3ed124b2 | 1704 | if (INTEL_INFO(dev)->gen < 8) |
5c5f6457 | 1705 | return gen6_ppgtt_init(ppgtt); |
3ed124b2 | 1706 | else |
d7b2633d | 1707 | return gen8_ppgtt_init(ppgtt); |
fa76da34 | 1708 | } |
c114f76a | 1709 | |
fa76da34 DV |
1710 | int i915_ppgtt_init(struct drm_device *dev, struct i915_hw_ppgtt *ppgtt) |
1711 | { | |
1712 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1713 | int ret = 0; | |
3ed124b2 | 1714 | |
5c5f6457 | 1715 | ret = __hw_ppgtt_init(dev, ppgtt); |
fa76da34 | 1716 | if (ret == 0) { |
c7c48dfd | 1717 | kref_init(&ppgtt->ref); |
93bd8649 BW |
1718 | drm_mm_init(&ppgtt->base.mm, ppgtt->base.start, |
1719 | ppgtt->base.total); | |
7e0d96bc | 1720 | i915_init_vm(dev_priv, &ppgtt->base); |
93bd8649 | 1721 | } |
1d2a314c DV |
1722 | |
1723 | return ret; | |
1724 | } | |
1725 | ||
82460d97 DV |
1726 | int i915_ppgtt_init_hw(struct drm_device *dev) |
1727 | { | |
671b5013 TD |
1728 | /* In the case of execlists, PPGTT is enabled by the context descriptor |
1729 | * and the PDPs are contained within the context itself. We don't | |
1730 | * need to do anything here. */ | |
1731 | if (i915.enable_execlists) | |
1732 | return 0; | |
1733 | ||
82460d97 DV |
1734 | if (!USES_PPGTT(dev)) |
1735 | return 0; | |
1736 | ||
1737 | if (IS_GEN6(dev)) | |
1738 | gen6_ppgtt_enable(dev); | |
1739 | else if (IS_GEN7(dev)) | |
1740 | gen7_ppgtt_enable(dev); | |
1741 | else if (INTEL_INFO(dev)->gen >= 8) | |
1742 | gen8_ppgtt_enable(dev); | |
1743 | else | |
5f77eeb0 | 1744 | MISSING_CASE(INTEL_INFO(dev)->gen); |
82460d97 | 1745 | |
4ad2fd88 JH |
1746 | return 0; |
1747 | } | |
1d2a314c | 1748 | |
b3dd6b96 | 1749 | int i915_ppgtt_init_ring(struct drm_i915_gem_request *req) |
4ad2fd88 | 1750 | { |
b3dd6b96 | 1751 | struct drm_i915_private *dev_priv = req->ring->dev->dev_private; |
4ad2fd88 JH |
1752 | struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt; |
1753 | ||
1754 | if (i915.enable_execlists) | |
1755 | return 0; | |
1756 | ||
1757 | if (!ppgtt) | |
1758 | return 0; | |
1759 | ||
e85b26dc | 1760 | return ppgtt->switch_mm(ppgtt, req); |
1d2a314c | 1761 | } |
4ad2fd88 | 1762 | |
4d884705 DV |
1763 | struct i915_hw_ppgtt * |
1764 | i915_ppgtt_create(struct drm_device *dev, struct drm_i915_file_private *fpriv) | |
1765 | { | |
1766 | struct i915_hw_ppgtt *ppgtt; | |
1767 | int ret; | |
1768 | ||
1769 | ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL); | |
1770 | if (!ppgtt) | |
1771 | return ERR_PTR(-ENOMEM); | |
1772 | ||
1773 | ret = i915_ppgtt_init(dev, ppgtt); | |
1774 | if (ret) { | |
1775 | kfree(ppgtt); | |
1776 | return ERR_PTR(ret); | |
1777 | } | |
1778 | ||
1779 | ppgtt->file_priv = fpriv; | |
1780 | ||
198c974d DCS |
1781 | trace_i915_ppgtt_create(&ppgtt->base); |
1782 | ||
4d884705 DV |
1783 | return ppgtt; |
1784 | } | |
1785 | ||
ee960be7 DV |
1786 | void i915_ppgtt_release(struct kref *kref) |
1787 | { | |
1788 | struct i915_hw_ppgtt *ppgtt = | |
1789 | container_of(kref, struct i915_hw_ppgtt, ref); | |
1790 | ||
198c974d DCS |
1791 | trace_i915_ppgtt_release(&ppgtt->base); |
1792 | ||
ee960be7 DV |
1793 | /* vmas should already be unbound */ |
1794 | WARN_ON(!list_empty(&ppgtt->base.active_list)); | |
1795 | WARN_ON(!list_empty(&ppgtt->base.inactive_list)); | |
1796 | ||
19dd120c DV |
1797 | list_del(&ppgtt->base.global_link); |
1798 | drm_mm_takedown(&ppgtt->base.mm); | |
1799 | ||
ee960be7 DV |
1800 | ppgtt->base.cleanup(&ppgtt->base); |
1801 | kfree(ppgtt); | |
1802 | } | |
1d2a314c | 1803 | |
a81cc00c BW |
1804 | extern int intel_iommu_gfx_mapped; |
1805 | /* Certain Gen5 chipsets require require idling the GPU before | |
1806 | * unmapping anything from the GTT when VT-d is enabled. | |
1807 | */ | |
2c642b07 | 1808 | static bool needs_idle_maps(struct drm_device *dev) |
a81cc00c BW |
1809 | { |
1810 | #ifdef CONFIG_INTEL_IOMMU | |
1811 | /* Query intel_iommu to see if we need the workaround. Presumably that | |
1812 | * was loaded first. | |
1813 | */ | |
1814 | if (IS_GEN5(dev) && IS_MOBILE(dev) && intel_iommu_gfx_mapped) | |
1815 | return true; | |
1816 | #endif | |
1817 | return false; | |
1818 | } | |
1819 | ||
5c042287 BW |
1820 | static bool do_idling(struct drm_i915_private *dev_priv) |
1821 | { | |
1822 | bool ret = dev_priv->mm.interruptible; | |
1823 | ||
a81cc00c | 1824 | if (unlikely(dev_priv->gtt.do_idle_maps)) { |
5c042287 | 1825 | dev_priv->mm.interruptible = false; |
b2da9fe5 | 1826 | if (i915_gpu_idle(dev_priv->dev)) { |
5c042287 BW |
1827 | DRM_ERROR("Couldn't idle GPU\n"); |
1828 | /* Wait a bit, in hopes it avoids the hang */ | |
1829 | udelay(10); | |
1830 | } | |
1831 | } | |
1832 | ||
1833 | return ret; | |
1834 | } | |
1835 | ||
1836 | static void undo_idling(struct drm_i915_private *dev_priv, bool interruptible) | |
1837 | { | |
a81cc00c | 1838 | if (unlikely(dev_priv->gtt.do_idle_maps)) |
5c042287 BW |
1839 | dev_priv->mm.interruptible = interruptible; |
1840 | } | |
1841 | ||
828c7908 BW |
1842 | void i915_check_and_clear_faults(struct drm_device *dev) |
1843 | { | |
1844 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4872ba6 | 1845 | struct intel_engine_cs *ring; |
828c7908 BW |
1846 | int i; |
1847 | ||
1848 | if (INTEL_INFO(dev)->gen < 6) | |
1849 | return; | |
1850 | ||
1851 | for_each_ring(ring, dev_priv, i) { | |
1852 | u32 fault_reg; | |
1853 | fault_reg = I915_READ(RING_FAULT_REG(ring)); | |
1854 | if (fault_reg & RING_FAULT_VALID) { | |
1855 | DRM_DEBUG_DRIVER("Unexpected fault\n" | |
59a5d290 | 1856 | "\tAddr: 0x%08lx\n" |
828c7908 BW |
1857 | "\tAddress space: %s\n" |
1858 | "\tSource ID: %d\n" | |
1859 | "\tType: %d\n", | |
1860 | fault_reg & PAGE_MASK, | |
1861 | fault_reg & RING_FAULT_GTTSEL_MASK ? "GGTT" : "PPGTT", | |
1862 | RING_FAULT_SRCID(fault_reg), | |
1863 | RING_FAULT_FAULT_TYPE(fault_reg)); | |
1864 | I915_WRITE(RING_FAULT_REG(ring), | |
1865 | fault_reg & ~RING_FAULT_VALID); | |
1866 | } | |
1867 | } | |
1868 | POSTING_READ(RING_FAULT_REG(&dev_priv->ring[RCS])); | |
1869 | } | |
1870 | ||
91e56499 CW |
1871 | static void i915_ggtt_flush(struct drm_i915_private *dev_priv) |
1872 | { | |
1873 | if (INTEL_INFO(dev_priv->dev)->gen < 6) { | |
1874 | intel_gtt_chipset_flush(); | |
1875 | } else { | |
1876 | I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); | |
1877 | POSTING_READ(GFX_FLSH_CNTL_GEN6); | |
1878 | } | |
1879 | } | |
1880 | ||
828c7908 BW |
1881 | void i915_gem_suspend_gtt_mappings(struct drm_device *dev) |
1882 | { | |
1883 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1884 | ||
1885 | /* Don't bother messing with faults pre GEN6 as we have little | |
1886 | * documentation supporting that it's a good idea. | |
1887 | */ | |
1888 | if (INTEL_INFO(dev)->gen < 6) | |
1889 | return; | |
1890 | ||
1891 | i915_check_and_clear_faults(dev); | |
1892 | ||
1893 | dev_priv->gtt.base.clear_range(&dev_priv->gtt.base, | |
782f1495 BW |
1894 | dev_priv->gtt.base.start, |
1895 | dev_priv->gtt.base.total, | |
e568af1c | 1896 | true); |
91e56499 CW |
1897 | |
1898 | i915_ggtt_flush(dev_priv); | |
828c7908 BW |
1899 | } |
1900 | ||
74163907 | 1901 | int i915_gem_gtt_prepare_object(struct drm_i915_gem_object *obj) |
7c2e6fdf | 1902 | { |
9da3da66 CW |
1903 | if (!dma_map_sg(&obj->base.dev->pdev->dev, |
1904 | obj->pages->sgl, obj->pages->nents, | |
1905 | PCI_DMA_BIDIRECTIONAL)) | |
1906 | return -ENOSPC; | |
1907 | ||
1908 | return 0; | |
7c2e6fdf DV |
1909 | } |
1910 | ||
2c642b07 | 1911 | static void gen8_set_pte(void __iomem *addr, gen8_pte_t pte) |
94ec8f61 BW |
1912 | { |
1913 | #ifdef writeq | |
1914 | writeq(pte, addr); | |
1915 | #else | |
1916 | iowrite32((u32)pte, addr); | |
1917 | iowrite32(pte >> 32, addr + 4); | |
1918 | #endif | |
1919 | } | |
1920 | ||
1921 | static void gen8_ggtt_insert_entries(struct i915_address_space *vm, | |
1922 | struct sg_table *st, | |
782f1495 | 1923 | uint64_t start, |
24f3a8cf | 1924 | enum i915_cache_level level, u32 unused) |
94ec8f61 BW |
1925 | { |
1926 | struct drm_i915_private *dev_priv = vm->dev->dev_private; | |
782f1495 | 1927 | unsigned first_entry = start >> PAGE_SHIFT; |
07749ef3 MT |
1928 | gen8_pte_t __iomem *gtt_entries = |
1929 | (gen8_pte_t __iomem *)dev_priv->gtt.gsm + first_entry; | |
94ec8f61 BW |
1930 | int i = 0; |
1931 | struct sg_page_iter sg_iter; | |
57007df7 | 1932 | dma_addr_t addr = 0; /* shut up gcc */ |
94ec8f61 BW |
1933 | |
1934 | for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) { | |
1935 | addr = sg_dma_address(sg_iter.sg) + | |
1936 | (sg_iter.sg_pgoffset << PAGE_SHIFT); | |
1937 | gen8_set_pte(>t_entries[i], | |
1938 | gen8_pte_encode(addr, level, true)); | |
1939 | i++; | |
1940 | } | |
1941 | ||
1942 | /* | |
1943 | * XXX: This serves as a posting read to make sure that the PTE has | |
1944 | * actually been updated. There is some concern that even though | |
1945 | * registers and PTEs are within the same BAR that they are potentially | |
1946 | * of NUMA access patterns. Therefore, even with the way we assume | |
1947 | * hardware should work, we must keep this posting read for paranoia. | |
1948 | */ | |
1949 | if (i != 0) | |
1950 | WARN_ON(readq(>t_entries[i-1]) | |
1951 | != gen8_pte_encode(addr, level, true)); | |
1952 | ||
94ec8f61 BW |
1953 | /* This next bit makes the above posting read even more important. We |
1954 | * want to flush the TLBs only after we're certain all the PTE updates | |
1955 | * have finished. | |
1956 | */ | |
1957 | I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); | |
1958 | POSTING_READ(GFX_FLSH_CNTL_GEN6); | |
94ec8f61 BW |
1959 | } |
1960 | ||
e76e9aeb BW |
1961 | /* |
1962 | * Binds an object into the global gtt with the specified cache level. The object | |
1963 | * will be accessible to the GPU via commands whose operands reference offsets | |
1964 | * within the global GTT as well as accessible by the GPU through the GMADR | |
1965 | * mapped BAR (dev_priv->mm.gtt->gtt). | |
1966 | */ | |
853ba5d2 | 1967 | static void gen6_ggtt_insert_entries(struct i915_address_space *vm, |
7faf1ab2 | 1968 | struct sg_table *st, |
782f1495 | 1969 | uint64_t start, |
24f3a8cf | 1970 | enum i915_cache_level level, u32 flags) |
e76e9aeb | 1971 | { |
853ba5d2 | 1972 | struct drm_i915_private *dev_priv = vm->dev->dev_private; |
782f1495 | 1973 | unsigned first_entry = start >> PAGE_SHIFT; |
07749ef3 MT |
1974 | gen6_pte_t __iomem *gtt_entries = |
1975 | (gen6_pte_t __iomem *)dev_priv->gtt.gsm + first_entry; | |
6e995e23 ID |
1976 | int i = 0; |
1977 | struct sg_page_iter sg_iter; | |
57007df7 | 1978 | dma_addr_t addr = 0; |
e76e9aeb | 1979 | |
6e995e23 | 1980 | for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) { |
2db76d7c | 1981 | addr = sg_page_iter_dma_address(&sg_iter); |
24f3a8cf | 1982 | iowrite32(vm->pte_encode(addr, level, true, flags), >t_entries[i]); |
6e995e23 | 1983 | i++; |
e76e9aeb BW |
1984 | } |
1985 | ||
e76e9aeb BW |
1986 | /* XXX: This serves as a posting read to make sure that the PTE has |
1987 | * actually been updated. There is some concern that even though | |
1988 | * registers and PTEs are within the same BAR that they are potentially | |
1989 | * of NUMA access patterns. Therefore, even with the way we assume | |
1990 | * hardware should work, we must keep this posting read for paranoia. | |
1991 | */ | |
57007df7 PM |
1992 | if (i != 0) { |
1993 | unsigned long gtt = readl(>t_entries[i-1]); | |
1994 | WARN_ON(gtt != vm->pte_encode(addr, level, true, flags)); | |
1995 | } | |
0f9b91c7 BW |
1996 | |
1997 | /* This next bit makes the above posting read even more important. We | |
1998 | * want to flush the TLBs only after we're certain all the PTE updates | |
1999 | * have finished. | |
2000 | */ | |
2001 | I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); | |
2002 | POSTING_READ(GFX_FLSH_CNTL_GEN6); | |
e76e9aeb BW |
2003 | } |
2004 | ||
94ec8f61 | 2005 | static void gen8_ggtt_clear_range(struct i915_address_space *vm, |
782f1495 BW |
2006 | uint64_t start, |
2007 | uint64_t length, | |
94ec8f61 BW |
2008 | bool use_scratch) |
2009 | { | |
2010 | struct drm_i915_private *dev_priv = vm->dev->dev_private; | |
782f1495 BW |
2011 | unsigned first_entry = start >> PAGE_SHIFT; |
2012 | unsigned num_entries = length >> PAGE_SHIFT; | |
07749ef3 MT |
2013 | gen8_pte_t scratch_pte, __iomem *gtt_base = |
2014 | (gen8_pte_t __iomem *) dev_priv->gtt.gsm + first_entry; | |
94ec8f61 BW |
2015 | const int max_entries = gtt_total_entries(dev_priv->gtt) - first_entry; |
2016 | int i; | |
2017 | ||
2018 | if (WARN(num_entries > max_entries, | |
2019 | "First entry = %d; Num entries = %d (max=%d)\n", | |
2020 | first_entry, num_entries, max_entries)) | |
2021 | num_entries = max_entries; | |
2022 | ||
c114f76a | 2023 | scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page), |
94ec8f61 BW |
2024 | I915_CACHE_LLC, |
2025 | use_scratch); | |
2026 | for (i = 0; i < num_entries; i++) | |
2027 | gen8_set_pte(>t_base[i], scratch_pte); | |
2028 | readl(gtt_base); | |
2029 | } | |
2030 | ||
853ba5d2 | 2031 | static void gen6_ggtt_clear_range(struct i915_address_space *vm, |
782f1495 BW |
2032 | uint64_t start, |
2033 | uint64_t length, | |
828c7908 | 2034 | bool use_scratch) |
7faf1ab2 | 2035 | { |
853ba5d2 | 2036 | struct drm_i915_private *dev_priv = vm->dev->dev_private; |
782f1495 BW |
2037 | unsigned first_entry = start >> PAGE_SHIFT; |
2038 | unsigned num_entries = length >> PAGE_SHIFT; | |
07749ef3 MT |
2039 | gen6_pte_t scratch_pte, __iomem *gtt_base = |
2040 | (gen6_pte_t __iomem *) dev_priv->gtt.gsm + first_entry; | |
a54c0c27 | 2041 | const int max_entries = gtt_total_entries(dev_priv->gtt) - first_entry; |
7faf1ab2 DV |
2042 | int i; |
2043 | ||
2044 | if (WARN(num_entries > max_entries, | |
2045 | "First entry = %d; Num entries = %d (max=%d)\n", | |
2046 | first_entry, num_entries, max_entries)) | |
2047 | num_entries = max_entries; | |
2048 | ||
c114f76a MK |
2049 | scratch_pte = vm->pte_encode(px_dma(vm->scratch_page), |
2050 | I915_CACHE_LLC, use_scratch, 0); | |
828c7908 | 2051 | |
7faf1ab2 DV |
2052 | for (i = 0; i < num_entries; i++) |
2053 | iowrite32(scratch_pte, >t_base[i]); | |
2054 | readl(gtt_base); | |
2055 | } | |
2056 | ||
d369d2d9 DV |
2057 | static void i915_ggtt_insert_entries(struct i915_address_space *vm, |
2058 | struct sg_table *pages, | |
2059 | uint64_t start, | |
2060 | enum i915_cache_level cache_level, u32 unused) | |
7faf1ab2 DV |
2061 | { |
2062 | unsigned int flags = (cache_level == I915_CACHE_NONE) ? | |
2063 | AGP_USER_MEMORY : AGP_USER_CACHED_MEMORY; | |
2064 | ||
d369d2d9 | 2065 | intel_gtt_insert_sg_entries(pages, start >> PAGE_SHIFT, flags); |
0875546c | 2066 | |
7faf1ab2 DV |
2067 | } |
2068 | ||
853ba5d2 | 2069 | static void i915_ggtt_clear_range(struct i915_address_space *vm, |
782f1495 BW |
2070 | uint64_t start, |
2071 | uint64_t length, | |
828c7908 | 2072 | bool unused) |
7faf1ab2 | 2073 | { |
782f1495 BW |
2074 | unsigned first_entry = start >> PAGE_SHIFT; |
2075 | unsigned num_entries = length >> PAGE_SHIFT; | |
7faf1ab2 DV |
2076 | intel_gtt_clear_range(first_entry, num_entries); |
2077 | } | |
2078 | ||
70b9f6f8 DV |
2079 | static int ggtt_bind_vma(struct i915_vma *vma, |
2080 | enum i915_cache_level cache_level, | |
2081 | u32 flags) | |
d5bd1449 | 2082 | { |
6f65e29a | 2083 | struct drm_device *dev = vma->vm->dev; |
7faf1ab2 | 2084 | struct drm_i915_private *dev_priv = dev->dev_private; |
6f65e29a | 2085 | struct drm_i915_gem_object *obj = vma->obj; |
ec7adb6e | 2086 | struct sg_table *pages = obj->pages; |
f329f5f6 | 2087 | u32 pte_flags = 0; |
70b9f6f8 DV |
2088 | int ret; |
2089 | ||
2090 | ret = i915_get_ggtt_vma_pages(vma); | |
2091 | if (ret) | |
2092 | return ret; | |
2093 | pages = vma->ggtt_view.pages; | |
7faf1ab2 | 2094 | |
24f3a8cf AG |
2095 | /* Currently applicable only to VLV */ |
2096 | if (obj->gt_ro) | |
f329f5f6 | 2097 | pte_flags |= PTE_READ_ONLY; |
24f3a8cf | 2098 | |
ec7adb6e | 2099 | |
6f65e29a | 2100 | if (!dev_priv->mm.aliasing_ppgtt || flags & GLOBAL_BIND) { |
0875546c DV |
2101 | vma->vm->insert_entries(vma->vm, pages, |
2102 | vma->node.start, | |
2103 | cache_level, pte_flags); | |
d0e30adc CW |
2104 | |
2105 | /* Note the inconsistency here is due to absence of the | |
2106 | * aliasing ppgtt on gen4 and earlier. Though we always | |
2107 | * request PIN_USER for execbuffer (translated to LOCAL_BIND), | |
2108 | * without the appgtt, we cannot honour that request and so | |
2109 | * must substitute it with a global binding. Since we do this | |
2110 | * behind the upper layers back, we need to explicitly set | |
2111 | * the bound flag ourselves. | |
2112 | */ | |
2113 | vma->bound |= GLOBAL_BIND; | |
2114 | ||
6f65e29a | 2115 | } |
d5bd1449 | 2116 | |
0875546c | 2117 | if (dev_priv->mm.aliasing_ppgtt && flags & LOCAL_BIND) { |
6f65e29a | 2118 | struct i915_hw_ppgtt *appgtt = dev_priv->mm.aliasing_ppgtt; |
ec7adb6e | 2119 | appgtt->base.insert_entries(&appgtt->base, pages, |
782f1495 | 2120 | vma->node.start, |
f329f5f6 | 2121 | cache_level, pte_flags); |
6f65e29a | 2122 | } |
70b9f6f8 DV |
2123 | |
2124 | return 0; | |
d5bd1449 CW |
2125 | } |
2126 | ||
6f65e29a | 2127 | static void ggtt_unbind_vma(struct i915_vma *vma) |
74163907 | 2128 | { |
6f65e29a | 2129 | struct drm_device *dev = vma->vm->dev; |
7faf1ab2 | 2130 | struct drm_i915_private *dev_priv = dev->dev_private; |
6f65e29a | 2131 | struct drm_i915_gem_object *obj = vma->obj; |
06615ee5 JL |
2132 | const uint64_t size = min_t(uint64_t, |
2133 | obj->base.size, | |
2134 | vma->node.size); | |
6f65e29a | 2135 | |
aff43766 | 2136 | if (vma->bound & GLOBAL_BIND) { |
782f1495 BW |
2137 | vma->vm->clear_range(vma->vm, |
2138 | vma->node.start, | |
06615ee5 | 2139 | size, |
6f65e29a | 2140 | true); |
6f65e29a | 2141 | } |
74898d7e | 2142 | |
0875546c | 2143 | if (dev_priv->mm.aliasing_ppgtt && vma->bound & LOCAL_BIND) { |
6f65e29a | 2144 | struct i915_hw_ppgtt *appgtt = dev_priv->mm.aliasing_ppgtt; |
06615ee5 | 2145 | |
6f65e29a | 2146 | appgtt->base.clear_range(&appgtt->base, |
782f1495 | 2147 | vma->node.start, |
06615ee5 | 2148 | size, |
6f65e29a | 2149 | true); |
6f65e29a | 2150 | } |
74163907 DV |
2151 | } |
2152 | ||
2153 | void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj) | |
7c2e6fdf | 2154 | { |
5c042287 BW |
2155 | struct drm_device *dev = obj->base.dev; |
2156 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2157 | bool interruptible; | |
2158 | ||
2159 | interruptible = do_idling(dev_priv); | |
2160 | ||
5ec5b516 ID |
2161 | dma_unmap_sg(&dev->pdev->dev, obj->pages->sgl, obj->pages->nents, |
2162 | PCI_DMA_BIDIRECTIONAL); | |
5c042287 BW |
2163 | |
2164 | undo_idling(dev_priv, interruptible); | |
7c2e6fdf | 2165 | } |
644ec02b | 2166 | |
42d6ab48 CW |
2167 | static void i915_gtt_color_adjust(struct drm_mm_node *node, |
2168 | unsigned long color, | |
440fd528 TR |
2169 | u64 *start, |
2170 | u64 *end) | |
42d6ab48 CW |
2171 | { |
2172 | if (node->color != color) | |
2173 | *start += 4096; | |
2174 | ||
2175 | if (!list_empty(&node->node_list)) { | |
2176 | node = list_entry(node->node_list.next, | |
2177 | struct drm_mm_node, | |
2178 | node_list); | |
2179 | if (node->allocated && node->color != color) | |
2180 | *end -= 4096; | |
2181 | } | |
2182 | } | |
fbe5d36e | 2183 | |
f548c0e9 DV |
2184 | static int i915_gem_setup_global_gtt(struct drm_device *dev, |
2185 | unsigned long start, | |
2186 | unsigned long mappable_end, | |
2187 | unsigned long end) | |
644ec02b | 2188 | { |
e78891ca BW |
2189 | /* Let GEM Manage all of the aperture. |
2190 | * | |
2191 | * However, leave one page at the end still bound to the scratch page. | |
2192 | * There are a number of places where the hardware apparently prefetches | |
2193 | * past the end of the object, and we've seen multiple hangs with the | |
2194 | * GPU head pointer stuck in a batchbuffer bound at the last page of the | |
2195 | * aperture. One page should be enough to keep any prefetching inside | |
2196 | * of the aperture. | |
2197 | */ | |
40d74980 BW |
2198 | struct drm_i915_private *dev_priv = dev->dev_private; |
2199 | struct i915_address_space *ggtt_vm = &dev_priv->gtt.base; | |
ed2f3452 CW |
2200 | struct drm_mm_node *entry; |
2201 | struct drm_i915_gem_object *obj; | |
2202 | unsigned long hole_start, hole_end; | |
fa76da34 | 2203 | int ret; |
644ec02b | 2204 | |
35451cb6 BW |
2205 | BUG_ON(mappable_end > end); |
2206 | ||
ed2f3452 | 2207 | /* Subtract the guard page ... */ |
40d74980 | 2208 | drm_mm_init(&ggtt_vm->mm, start, end - start - PAGE_SIZE); |
5dda8fa3 YZ |
2209 | |
2210 | dev_priv->gtt.base.start = start; | |
2211 | dev_priv->gtt.base.total = end - start; | |
2212 | ||
2213 | if (intel_vgpu_active(dev)) { | |
2214 | ret = intel_vgt_balloon(dev); | |
2215 | if (ret) | |
2216 | return ret; | |
2217 | } | |
2218 | ||
42d6ab48 | 2219 | if (!HAS_LLC(dev)) |
93bd8649 | 2220 | dev_priv->gtt.base.mm.color_adjust = i915_gtt_color_adjust; |
644ec02b | 2221 | |
ed2f3452 | 2222 | /* Mark any preallocated objects as occupied */ |
35c20a60 | 2223 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { |
40d74980 | 2224 | struct i915_vma *vma = i915_gem_obj_to_vma(obj, ggtt_vm); |
fa76da34 | 2225 | |
edd41a87 | 2226 | DRM_DEBUG_KMS("reserving preallocated space: %lx + %zx\n", |
c6cfb325 BW |
2227 | i915_gem_obj_ggtt_offset(obj), obj->base.size); |
2228 | ||
2229 | WARN_ON(i915_gem_obj_ggtt_bound(obj)); | |
40d74980 | 2230 | ret = drm_mm_reserve_node(&ggtt_vm->mm, &vma->node); |
6c5566a8 DV |
2231 | if (ret) { |
2232 | DRM_DEBUG_KMS("Reservation failed: %i\n", ret); | |
2233 | return ret; | |
2234 | } | |
aff43766 | 2235 | vma->bound |= GLOBAL_BIND; |
ed2f3452 CW |
2236 | } |
2237 | ||
ed2f3452 | 2238 | /* Clear any non-preallocated blocks */ |
40d74980 | 2239 | drm_mm_for_each_hole(entry, &ggtt_vm->mm, hole_start, hole_end) { |
ed2f3452 CW |
2240 | DRM_DEBUG_KMS("clearing unused GTT space: [%lx, %lx]\n", |
2241 | hole_start, hole_end); | |
782f1495 BW |
2242 | ggtt_vm->clear_range(ggtt_vm, hole_start, |
2243 | hole_end - hole_start, true); | |
ed2f3452 CW |
2244 | } |
2245 | ||
2246 | /* And finally clear the reserved guard page */ | |
782f1495 | 2247 | ggtt_vm->clear_range(ggtt_vm, end - PAGE_SIZE, PAGE_SIZE, true); |
6c5566a8 | 2248 | |
fa76da34 DV |
2249 | if (USES_PPGTT(dev) && !USES_FULL_PPGTT(dev)) { |
2250 | struct i915_hw_ppgtt *ppgtt; | |
2251 | ||
2252 | ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL); | |
2253 | if (!ppgtt) | |
2254 | return -ENOMEM; | |
2255 | ||
5c5f6457 DV |
2256 | ret = __hw_ppgtt_init(dev, ppgtt); |
2257 | if (ret) { | |
2258 | ppgtt->base.cleanup(&ppgtt->base); | |
2259 | kfree(ppgtt); | |
2260 | return ret; | |
2261 | } | |
2262 | ||
2263 | if (ppgtt->base.allocate_va_range) | |
2264 | ret = ppgtt->base.allocate_va_range(&ppgtt->base, 0, | |
2265 | ppgtt->base.total); | |
4933d519 | 2266 | if (ret) { |
061dd493 | 2267 | ppgtt->base.cleanup(&ppgtt->base); |
4933d519 | 2268 | kfree(ppgtt); |
fa76da34 | 2269 | return ret; |
4933d519 | 2270 | } |
fa76da34 | 2271 | |
5c5f6457 DV |
2272 | ppgtt->base.clear_range(&ppgtt->base, |
2273 | ppgtt->base.start, | |
2274 | ppgtt->base.total, | |
2275 | true); | |
2276 | ||
fa76da34 DV |
2277 | dev_priv->mm.aliasing_ppgtt = ppgtt; |
2278 | } | |
2279 | ||
6c5566a8 | 2280 | return 0; |
e76e9aeb BW |
2281 | } |
2282 | ||
d7e5008f BW |
2283 | void i915_gem_init_global_gtt(struct drm_device *dev) |
2284 | { | |
2285 | struct drm_i915_private *dev_priv = dev->dev_private; | |
c44ef60e | 2286 | u64 gtt_size, mappable_size; |
d7e5008f | 2287 | |
853ba5d2 | 2288 | gtt_size = dev_priv->gtt.base.total; |
93d18799 | 2289 | mappable_size = dev_priv->gtt.mappable_end; |
d7e5008f | 2290 | |
e78891ca | 2291 | i915_gem_setup_global_gtt(dev, 0, mappable_size, gtt_size); |
e76e9aeb BW |
2292 | } |
2293 | ||
90d0a0e8 DV |
2294 | void i915_global_gtt_cleanup(struct drm_device *dev) |
2295 | { | |
2296 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2297 | struct i915_address_space *vm = &dev_priv->gtt.base; | |
2298 | ||
70e32544 DV |
2299 | if (dev_priv->mm.aliasing_ppgtt) { |
2300 | struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt; | |
2301 | ||
2302 | ppgtt->base.cleanup(&ppgtt->base); | |
2303 | } | |
2304 | ||
90d0a0e8 | 2305 | if (drm_mm_initialized(&vm->mm)) { |
5dda8fa3 YZ |
2306 | if (intel_vgpu_active(dev)) |
2307 | intel_vgt_deballoon(); | |
2308 | ||
90d0a0e8 DV |
2309 | drm_mm_takedown(&vm->mm); |
2310 | list_del(&vm->global_link); | |
2311 | } | |
2312 | ||
2313 | vm->cleanup(vm); | |
2314 | } | |
70e32544 | 2315 | |
2c642b07 | 2316 | static unsigned int gen6_get_total_gtt_size(u16 snb_gmch_ctl) |
e76e9aeb BW |
2317 | { |
2318 | snb_gmch_ctl >>= SNB_GMCH_GGMS_SHIFT; | |
2319 | snb_gmch_ctl &= SNB_GMCH_GGMS_MASK; | |
2320 | return snb_gmch_ctl << 20; | |
2321 | } | |
2322 | ||
2c642b07 | 2323 | static unsigned int gen8_get_total_gtt_size(u16 bdw_gmch_ctl) |
9459d252 BW |
2324 | { |
2325 | bdw_gmch_ctl >>= BDW_GMCH_GGMS_SHIFT; | |
2326 | bdw_gmch_ctl &= BDW_GMCH_GGMS_MASK; | |
2327 | if (bdw_gmch_ctl) | |
2328 | bdw_gmch_ctl = 1 << bdw_gmch_ctl; | |
562d55d9 BW |
2329 | |
2330 | #ifdef CONFIG_X86_32 | |
2331 | /* Limit 32b platforms to a 2GB GGTT: 4 << 20 / pte size * PAGE_SIZE */ | |
2332 | if (bdw_gmch_ctl > 4) | |
2333 | bdw_gmch_ctl = 4; | |
2334 | #endif | |
2335 | ||
9459d252 BW |
2336 | return bdw_gmch_ctl << 20; |
2337 | } | |
2338 | ||
2c642b07 | 2339 | static unsigned int chv_get_total_gtt_size(u16 gmch_ctrl) |
d7f25f23 DL |
2340 | { |
2341 | gmch_ctrl >>= SNB_GMCH_GGMS_SHIFT; | |
2342 | gmch_ctrl &= SNB_GMCH_GGMS_MASK; | |
2343 | ||
2344 | if (gmch_ctrl) | |
2345 | return 1 << (20 + gmch_ctrl); | |
2346 | ||
2347 | return 0; | |
2348 | } | |
2349 | ||
2c642b07 | 2350 | static size_t gen6_get_stolen_size(u16 snb_gmch_ctl) |
e76e9aeb BW |
2351 | { |
2352 | snb_gmch_ctl >>= SNB_GMCH_GMS_SHIFT; | |
2353 | snb_gmch_ctl &= SNB_GMCH_GMS_MASK; | |
2354 | return snb_gmch_ctl << 25; /* 32 MB units */ | |
2355 | } | |
2356 | ||
2c642b07 | 2357 | static size_t gen8_get_stolen_size(u16 bdw_gmch_ctl) |
9459d252 BW |
2358 | { |
2359 | bdw_gmch_ctl >>= BDW_GMCH_GMS_SHIFT; | |
2360 | bdw_gmch_ctl &= BDW_GMCH_GMS_MASK; | |
2361 | return bdw_gmch_ctl << 25; /* 32 MB units */ | |
2362 | } | |
2363 | ||
d7f25f23 DL |
2364 | static size_t chv_get_stolen_size(u16 gmch_ctrl) |
2365 | { | |
2366 | gmch_ctrl >>= SNB_GMCH_GMS_SHIFT; | |
2367 | gmch_ctrl &= SNB_GMCH_GMS_MASK; | |
2368 | ||
2369 | /* | |
2370 | * 0x0 to 0x10: 32MB increments starting at 0MB | |
2371 | * 0x11 to 0x16: 4MB increments starting at 8MB | |
2372 | * 0x17 to 0x1d: 4MB increments start at 36MB | |
2373 | */ | |
2374 | if (gmch_ctrl < 0x11) | |
2375 | return gmch_ctrl << 25; | |
2376 | else if (gmch_ctrl < 0x17) | |
2377 | return (gmch_ctrl - 0x11 + 2) << 22; | |
2378 | else | |
2379 | return (gmch_ctrl - 0x17 + 9) << 22; | |
2380 | } | |
2381 | ||
66375014 DL |
2382 | static size_t gen9_get_stolen_size(u16 gen9_gmch_ctl) |
2383 | { | |
2384 | gen9_gmch_ctl >>= BDW_GMCH_GMS_SHIFT; | |
2385 | gen9_gmch_ctl &= BDW_GMCH_GMS_MASK; | |
2386 | ||
2387 | if (gen9_gmch_ctl < 0xf0) | |
2388 | return gen9_gmch_ctl << 25; /* 32 MB units */ | |
2389 | else | |
2390 | /* 4MB increments starting at 0xf0 for 4MB */ | |
2391 | return (gen9_gmch_ctl - 0xf0 + 1) << 22; | |
2392 | } | |
2393 | ||
63340133 BW |
2394 | static int ggtt_probe_common(struct drm_device *dev, |
2395 | size_t gtt_size) | |
2396 | { | |
2397 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4ad2af1e | 2398 | struct i915_page_scratch *scratch_page; |
21c34607 | 2399 | phys_addr_t gtt_phys_addr; |
63340133 BW |
2400 | |
2401 | /* For Modern GENs the PTEs and register space are split in the BAR */ | |
21c34607 | 2402 | gtt_phys_addr = pci_resource_start(dev->pdev, 0) + |
63340133 BW |
2403 | (pci_resource_len(dev->pdev, 0) / 2); |
2404 | ||
2a073f89 ID |
2405 | /* |
2406 | * On BXT writes larger than 64 bit to the GTT pagetable range will be | |
2407 | * dropped. For WC mappings in general we have 64 byte burst writes | |
2408 | * when the WC buffer is flushed, so we can't use it, but have to | |
2409 | * resort to an uncached mapping. The WC issue is easily caught by the | |
2410 | * readback check when writing GTT PTE entries. | |
2411 | */ | |
2412 | if (IS_BROXTON(dev)) | |
2413 | dev_priv->gtt.gsm = ioremap_nocache(gtt_phys_addr, gtt_size); | |
2414 | else | |
2415 | dev_priv->gtt.gsm = ioremap_wc(gtt_phys_addr, gtt_size); | |
63340133 BW |
2416 | if (!dev_priv->gtt.gsm) { |
2417 | DRM_ERROR("Failed to map the gtt page table\n"); | |
2418 | return -ENOMEM; | |
2419 | } | |
2420 | ||
4ad2af1e MK |
2421 | scratch_page = alloc_scratch_page(dev); |
2422 | if (IS_ERR(scratch_page)) { | |
63340133 BW |
2423 | DRM_ERROR("Scratch setup failed\n"); |
2424 | /* iounmap will also get called at remove, but meh */ | |
2425 | iounmap(dev_priv->gtt.gsm); | |
4ad2af1e | 2426 | return PTR_ERR(scratch_page); |
63340133 BW |
2427 | } |
2428 | ||
4ad2af1e MK |
2429 | dev_priv->gtt.base.scratch_page = scratch_page; |
2430 | ||
2431 | return 0; | |
63340133 BW |
2432 | } |
2433 | ||
fbe5d36e BW |
2434 | /* The GGTT and PPGTT need a private PPAT setup in order to handle cacheability |
2435 | * bits. When using advanced contexts each context stores its own PAT, but | |
2436 | * writing this data shouldn't be harmful even in those cases. */ | |
ee0ce478 | 2437 | static void bdw_setup_private_ppat(struct drm_i915_private *dev_priv) |
fbe5d36e | 2438 | { |
fbe5d36e BW |
2439 | uint64_t pat; |
2440 | ||
2441 | pat = GEN8_PPAT(0, GEN8_PPAT_WB | GEN8_PPAT_LLC) | /* for normal objects, no eLLC */ | |
2442 | GEN8_PPAT(1, GEN8_PPAT_WC | GEN8_PPAT_LLCELLC) | /* for something pointing to ptes? */ | |
2443 | GEN8_PPAT(2, GEN8_PPAT_WT | GEN8_PPAT_LLCELLC) | /* for scanout with eLLC */ | |
2444 | GEN8_PPAT(3, GEN8_PPAT_UC) | /* Uncached objects, mostly for scanout */ | |
2445 | GEN8_PPAT(4, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0)) | | |
2446 | GEN8_PPAT(5, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1)) | | |
2447 | GEN8_PPAT(6, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2)) | | |
2448 | GEN8_PPAT(7, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3)); | |
2449 | ||
d6a8b72e RV |
2450 | if (!USES_PPGTT(dev_priv->dev)) |
2451 | /* Spec: "For GGTT, there is NO pat_sel[2:0] from the entry, | |
2452 | * so RTL will always use the value corresponding to | |
2453 | * pat_sel = 000". | |
2454 | * So let's disable cache for GGTT to avoid screen corruptions. | |
2455 | * MOCS still can be used though. | |
2456 | * - System agent ggtt writes (i.e. cpu gtt mmaps) already work | |
2457 | * before this patch, i.e. the same uncached + snooping access | |
2458 | * like on gen6/7 seems to be in effect. | |
2459 | * - So this just fixes blitter/render access. Again it looks | |
2460 | * like it's not just uncached access, but uncached + snooping. | |
2461 | * So we can still hold onto all our assumptions wrt cpu | |
2462 | * clflushing on LLC machines. | |
2463 | */ | |
2464 | pat = GEN8_PPAT(0, GEN8_PPAT_UC); | |
2465 | ||
fbe5d36e BW |
2466 | /* XXX: spec defines this as 2 distinct registers. It's unclear if a 64b |
2467 | * write would work. */ | |
2468 | I915_WRITE(GEN8_PRIVATE_PAT, pat); | |
2469 | I915_WRITE(GEN8_PRIVATE_PAT + 4, pat >> 32); | |
2470 | } | |
2471 | ||
ee0ce478 VS |
2472 | static void chv_setup_private_ppat(struct drm_i915_private *dev_priv) |
2473 | { | |
2474 | uint64_t pat; | |
2475 | ||
2476 | /* | |
2477 | * Map WB on BDW to snooped on CHV. | |
2478 | * | |
2479 | * Only the snoop bit has meaning for CHV, the rest is | |
2480 | * ignored. | |
2481 | * | |
cf3d262e VS |
2482 | * The hardware will never snoop for certain types of accesses: |
2483 | * - CPU GTT (GMADR->GGTT->no snoop->memory) | |
2484 | * - PPGTT page tables | |
2485 | * - some other special cycles | |
2486 | * | |
2487 | * As with BDW, we also need to consider the following for GT accesses: | |
2488 | * "For GGTT, there is NO pat_sel[2:0] from the entry, | |
2489 | * so RTL will always use the value corresponding to | |
2490 | * pat_sel = 000". | |
2491 | * Which means we must set the snoop bit in PAT entry 0 | |
2492 | * in order to keep the global status page working. | |
ee0ce478 VS |
2493 | */ |
2494 | pat = GEN8_PPAT(0, CHV_PPAT_SNOOP) | | |
2495 | GEN8_PPAT(1, 0) | | |
2496 | GEN8_PPAT(2, 0) | | |
2497 | GEN8_PPAT(3, 0) | | |
2498 | GEN8_PPAT(4, CHV_PPAT_SNOOP) | | |
2499 | GEN8_PPAT(5, CHV_PPAT_SNOOP) | | |
2500 | GEN8_PPAT(6, CHV_PPAT_SNOOP) | | |
2501 | GEN8_PPAT(7, CHV_PPAT_SNOOP); | |
2502 | ||
2503 | I915_WRITE(GEN8_PRIVATE_PAT, pat); | |
2504 | I915_WRITE(GEN8_PRIVATE_PAT + 4, pat >> 32); | |
2505 | } | |
2506 | ||
63340133 | 2507 | static int gen8_gmch_probe(struct drm_device *dev, |
c44ef60e | 2508 | u64 *gtt_total, |
63340133 BW |
2509 | size_t *stolen, |
2510 | phys_addr_t *mappable_base, | |
c44ef60e | 2511 | u64 *mappable_end) |
63340133 BW |
2512 | { |
2513 | struct drm_i915_private *dev_priv = dev->dev_private; | |
c44ef60e | 2514 | u64 gtt_size; |
63340133 BW |
2515 | u16 snb_gmch_ctl; |
2516 | int ret; | |
2517 | ||
2518 | /* TODO: We're not aware of mappable constraints on gen8 yet */ | |
2519 | *mappable_base = pci_resource_start(dev->pdev, 2); | |
2520 | *mappable_end = pci_resource_len(dev->pdev, 2); | |
2521 | ||
2522 | if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(39))) | |
2523 | pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(39)); | |
2524 | ||
2525 | pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl); | |
2526 | ||
66375014 DL |
2527 | if (INTEL_INFO(dev)->gen >= 9) { |
2528 | *stolen = gen9_get_stolen_size(snb_gmch_ctl); | |
2529 | gtt_size = gen8_get_total_gtt_size(snb_gmch_ctl); | |
2530 | } else if (IS_CHERRYVIEW(dev)) { | |
d7f25f23 DL |
2531 | *stolen = chv_get_stolen_size(snb_gmch_ctl); |
2532 | gtt_size = chv_get_total_gtt_size(snb_gmch_ctl); | |
2533 | } else { | |
2534 | *stolen = gen8_get_stolen_size(snb_gmch_ctl); | |
2535 | gtt_size = gen8_get_total_gtt_size(snb_gmch_ctl); | |
2536 | } | |
63340133 | 2537 | |
07749ef3 | 2538 | *gtt_total = (gtt_size / sizeof(gen8_pte_t)) << PAGE_SHIFT; |
63340133 | 2539 | |
5a4e33a3 | 2540 | if (IS_CHERRYVIEW(dev) || IS_BROXTON(dev)) |
ee0ce478 VS |
2541 | chv_setup_private_ppat(dev_priv); |
2542 | else | |
2543 | bdw_setup_private_ppat(dev_priv); | |
fbe5d36e | 2544 | |
63340133 BW |
2545 | ret = ggtt_probe_common(dev, gtt_size); |
2546 | ||
94ec8f61 BW |
2547 | dev_priv->gtt.base.clear_range = gen8_ggtt_clear_range; |
2548 | dev_priv->gtt.base.insert_entries = gen8_ggtt_insert_entries; | |
777dc5bb DV |
2549 | dev_priv->gtt.base.bind_vma = ggtt_bind_vma; |
2550 | dev_priv->gtt.base.unbind_vma = ggtt_unbind_vma; | |
63340133 BW |
2551 | |
2552 | return ret; | |
2553 | } | |
2554 | ||
baa09f5f | 2555 | static int gen6_gmch_probe(struct drm_device *dev, |
c44ef60e | 2556 | u64 *gtt_total, |
41907ddc BW |
2557 | size_t *stolen, |
2558 | phys_addr_t *mappable_base, | |
c44ef60e | 2559 | u64 *mappable_end) |
e76e9aeb BW |
2560 | { |
2561 | struct drm_i915_private *dev_priv = dev->dev_private; | |
baa09f5f | 2562 | unsigned int gtt_size; |
e76e9aeb | 2563 | u16 snb_gmch_ctl; |
e76e9aeb BW |
2564 | int ret; |
2565 | ||
41907ddc BW |
2566 | *mappable_base = pci_resource_start(dev->pdev, 2); |
2567 | *mappable_end = pci_resource_len(dev->pdev, 2); | |
2568 | ||
baa09f5f BW |
2569 | /* 64/512MB is the current min/max we actually know of, but this is just |
2570 | * a coarse sanity check. | |
e76e9aeb | 2571 | */ |
41907ddc | 2572 | if ((*mappable_end < (64<<20) || (*mappable_end > (512<<20)))) { |
c44ef60e | 2573 | DRM_ERROR("Unknown GMADR size (%llx)\n", |
baa09f5f BW |
2574 | dev_priv->gtt.mappable_end); |
2575 | return -ENXIO; | |
e76e9aeb BW |
2576 | } |
2577 | ||
e76e9aeb BW |
2578 | if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(40))) |
2579 | pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(40)); | |
e76e9aeb | 2580 | pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl); |
e76e9aeb | 2581 | |
c4ae25ec | 2582 | *stolen = gen6_get_stolen_size(snb_gmch_ctl); |
a93e4161 | 2583 | |
63340133 | 2584 | gtt_size = gen6_get_total_gtt_size(snb_gmch_ctl); |
07749ef3 | 2585 | *gtt_total = (gtt_size / sizeof(gen6_pte_t)) << PAGE_SHIFT; |
e76e9aeb | 2586 | |
63340133 | 2587 | ret = ggtt_probe_common(dev, gtt_size); |
e76e9aeb | 2588 | |
853ba5d2 BW |
2589 | dev_priv->gtt.base.clear_range = gen6_ggtt_clear_range; |
2590 | dev_priv->gtt.base.insert_entries = gen6_ggtt_insert_entries; | |
777dc5bb DV |
2591 | dev_priv->gtt.base.bind_vma = ggtt_bind_vma; |
2592 | dev_priv->gtt.base.unbind_vma = ggtt_unbind_vma; | |
7faf1ab2 | 2593 | |
e76e9aeb BW |
2594 | return ret; |
2595 | } | |
2596 | ||
853ba5d2 | 2597 | static void gen6_gmch_remove(struct i915_address_space *vm) |
e76e9aeb | 2598 | { |
853ba5d2 BW |
2599 | |
2600 | struct i915_gtt *gtt = container_of(vm, struct i915_gtt, base); | |
5ed16782 | 2601 | |
853ba5d2 | 2602 | iounmap(gtt->gsm); |
4ad2af1e | 2603 | free_scratch_page(vm->dev, vm->scratch_page); |
644ec02b | 2604 | } |
baa09f5f BW |
2605 | |
2606 | static int i915_gmch_probe(struct drm_device *dev, | |
c44ef60e | 2607 | u64 *gtt_total, |
41907ddc BW |
2608 | size_t *stolen, |
2609 | phys_addr_t *mappable_base, | |
c44ef60e | 2610 | u64 *mappable_end) |
baa09f5f BW |
2611 | { |
2612 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2613 | int ret; | |
2614 | ||
baa09f5f BW |
2615 | ret = intel_gmch_probe(dev_priv->bridge_dev, dev_priv->dev->pdev, NULL); |
2616 | if (!ret) { | |
2617 | DRM_ERROR("failed to set up gmch\n"); | |
2618 | return -EIO; | |
2619 | } | |
2620 | ||
41907ddc | 2621 | intel_gtt_get(gtt_total, stolen, mappable_base, mappable_end); |
baa09f5f BW |
2622 | |
2623 | dev_priv->gtt.do_idle_maps = needs_idle_maps(dev_priv->dev); | |
d369d2d9 | 2624 | dev_priv->gtt.base.insert_entries = i915_ggtt_insert_entries; |
853ba5d2 | 2625 | dev_priv->gtt.base.clear_range = i915_ggtt_clear_range; |
d369d2d9 DV |
2626 | dev_priv->gtt.base.bind_vma = ggtt_bind_vma; |
2627 | dev_priv->gtt.base.unbind_vma = ggtt_unbind_vma; | |
baa09f5f | 2628 | |
c0a7f818 CW |
2629 | if (unlikely(dev_priv->gtt.do_idle_maps)) |
2630 | DRM_INFO("applying Ironlake quirks for intel_iommu\n"); | |
2631 | ||
baa09f5f BW |
2632 | return 0; |
2633 | } | |
2634 | ||
853ba5d2 | 2635 | static void i915_gmch_remove(struct i915_address_space *vm) |
baa09f5f BW |
2636 | { |
2637 | intel_gmch_remove(); | |
2638 | } | |
2639 | ||
2640 | int i915_gem_gtt_init(struct drm_device *dev) | |
2641 | { | |
2642 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2643 | struct i915_gtt *gtt = &dev_priv->gtt; | |
baa09f5f BW |
2644 | int ret; |
2645 | ||
baa09f5f | 2646 | if (INTEL_INFO(dev)->gen <= 5) { |
b2f21b4d | 2647 | gtt->gtt_probe = i915_gmch_probe; |
853ba5d2 | 2648 | gtt->base.cleanup = i915_gmch_remove; |
63340133 | 2649 | } else if (INTEL_INFO(dev)->gen < 8) { |
b2f21b4d | 2650 | gtt->gtt_probe = gen6_gmch_probe; |
853ba5d2 | 2651 | gtt->base.cleanup = gen6_gmch_remove; |
4d15c145 | 2652 | if (IS_HASWELL(dev) && dev_priv->ellc_size) |
853ba5d2 | 2653 | gtt->base.pte_encode = iris_pte_encode; |
4d15c145 | 2654 | else if (IS_HASWELL(dev)) |
853ba5d2 | 2655 | gtt->base.pte_encode = hsw_pte_encode; |
b2f21b4d | 2656 | else if (IS_VALLEYVIEW(dev)) |
853ba5d2 | 2657 | gtt->base.pte_encode = byt_pte_encode; |
350ec881 CW |
2658 | else if (INTEL_INFO(dev)->gen >= 7) |
2659 | gtt->base.pte_encode = ivb_pte_encode; | |
b2f21b4d | 2660 | else |
350ec881 | 2661 | gtt->base.pte_encode = snb_pte_encode; |
63340133 BW |
2662 | } else { |
2663 | dev_priv->gtt.gtt_probe = gen8_gmch_probe; | |
2664 | dev_priv->gtt.base.cleanup = gen6_gmch_remove; | |
baa09f5f BW |
2665 | } |
2666 | ||
c114f76a MK |
2667 | gtt->base.dev = dev; |
2668 | ||
853ba5d2 | 2669 | ret = gtt->gtt_probe(dev, >t->base.total, >t->stolen_size, |
b2f21b4d | 2670 | >t->mappable_base, >t->mappable_end); |
a54c0c27 | 2671 | if (ret) |
baa09f5f | 2672 | return ret; |
baa09f5f | 2673 | |
baa09f5f | 2674 | /* GMADR is the PCI mmio aperture into the global GTT. */ |
c44ef60e | 2675 | DRM_INFO("Memory usable by graphics device = %lluM\n", |
853ba5d2 | 2676 | gtt->base.total >> 20); |
c44ef60e | 2677 | DRM_DEBUG_DRIVER("GMADR size = %lldM\n", gtt->mappable_end >> 20); |
b2f21b4d | 2678 | DRM_DEBUG_DRIVER("GTT stolen size = %zdM\n", gtt->stolen_size >> 20); |
5db6c735 DV |
2679 | #ifdef CONFIG_INTEL_IOMMU |
2680 | if (intel_iommu_gfx_mapped) | |
2681 | DRM_INFO("VT-d active for gfx access\n"); | |
2682 | #endif | |
cfa7c862 DV |
2683 | /* |
2684 | * i915.enable_ppgtt is read-only, so do an early pass to validate the | |
2685 | * user's requested state against the hardware/driver capabilities. We | |
2686 | * do this now so that we can print out any log messages once rather | |
2687 | * than every time we check intel_enable_ppgtt(). | |
2688 | */ | |
2689 | i915.enable_ppgtt = sanitize_enable_ppgtt(dev, i915.enable_ppgtt); | |
2690 | DRM_DEBUG_DRIVER("ppgtt mode: %i\n", i915.enable_ppgtt); | |
baa09f5f BW |
2691 | |
2692 | return 0; | |
2693 | } | |
6f65e29a | 2694 | |
fa42331b DV |
2695 | void i915_gem_restore_gtt_mappings(struct drm_device *dev) |
2696 | { | |
2697 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2698 | struct drm_i915_gem_object *obj; | |
2699 | struct i915_address_space *vm; | |
2c3d9984 TU |
2700 | struct i915_vma *vma; |
2701 | bool flush; | |
fa42331b DV |
2702 | |
2703 | i915_check_and_clear_faults(dev); | |
2704 | ||
2705 | /* First fill our portion of the GTT with scratch pages */ | |
2706 | dev_priv->gtt.base.clear_range(&dev_priv->gtt.base, | |
2707 | dev_priv->gtt.base.start, | |
2708 | dev_priv->gtt.base.total, | |
2709 | true); | |
2710 | ||
2c3d9984 TU |
2711 | /* Cache flush objects bound into GGTT and rebind them. */ |
2712 | vm = &dev_priv->gtt.base; | |
fa42331b | 2713 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { |
2c3d9984 TU |
2714 | flush = false; |
2715 | list_for_each_entry(vma, &obj->vma_list, vma_link) { | |
2716 | if (vma->vm != vm) | |
2717 | continue; | |
fa42331b | 2718 | |
2c3d9984 TU |
2719 | WARN_ON(i915_vma_bind(vma, obj->cache_level, |
2720 | PIN_UPDATE)); | |
fa42331b | 2721 | |
2c3d9984 TU |
2722 | flush = true; |
2723 | } | |
2724 | ||
2725 | if (flush) | |
2726 | i915_gem_clflush_object(obj, obj->pin_display); | |
2727 | } | |
fa42331b DV |
2728 | |
2729 | if (INTEL_INFO(dev)->gen >= 8) { | |
2730 | if (IS_CHERRYVIEW(dev) || IS_BROXTON(dev)) | |
2731 | chv_setup_private_ppat(dev_priv); | |
2732 | else | |
2733 | bdw_setup_private_ppat(dev_priv); | |
2734 | ||
2735 | return; | |
2736 | } | |
2737 | ||
2738 | if (USES_PPGTT(dev)) { | |
2739 | list_for_each_entry(vm, &dev_priv->vm_list, global_link) { | |
2740 | /* TODO: Perhaps it shouldn't be gen6 specific */ | |
2741 | ||
2742 | struct i915_hw_ppgtt *ppgtt = | |
2743 | container_of(vm, struct i915_hw_ppgtt, | |
2744 | base); | |
2745 | ||
2746 | if (i915_is_ggtt(vm)) | |
2747 | ppgtt = dev_priv->mm.aliasing_ppgtt; | |
2748 | ||
2749 | gen6_write_page_range(dev_priv, &ppgtt->pd, | |
2750 | 0, ppgtt->base.total); | |
2751 | } | |
2752 | } | |
2753 | ||
2754 | i915_ggtt_flush(dev_priv); | |
2755 | } | |
2756 | ||
ec7adb6e JL |
2757 | static struct i915_vma * |
2758 | __i915_gem_vma_create(struct drm_i915_gem_object *obj, | |
2759 | struct i915_address_space *vm, | |
2760 | const struct i915_ggtt_view *ggtt_view) | |
6f65e29a | 2761 | { |
dabde5c7 | 2762 | struct i915_vma *vma; |
6f65e29a | 2763 | |
ec7adb6e JL |
2764 | if (WARN_ON(i915_is_ggtt(vm) != !!ggtt_view)) |
2765 | return ERR_PTR(-EINVAL); | |
e20d2ab7 CW |
2766 | |
2767 | vma = kmem_cache_zalloc(to_i915(obj->base.dev)->vmas, GFP_KERNEL); | |
dabde5c7 DC |
2768 | if (vma == NULL) |
2769 | return ERR_PTR(-ENOMEM); | |
ec7adb6e | 2770 | |
6f65e29a BW |
2771 | INIT_LIST_HEAD(&vma->vma_link); |
2772 | INIT_LIST_HEAD(&vma->mm_list); | |
2773 | INIT_LIST_HEAD(&vma->exec_list); | |
2774 | vma->vm = vm; | |
2775 | vma->obj = obj; | |
2776 | ||
777dc5bb | 2777 | if (i915_is_ggtt(vm)) |
ec7adb6e | 2778 | vma->ggtt_view = *ggtt_view; |
6f65e29a | 2779 | |
f7635669 TU |
2780 | list_add_tail(&vma->vma_link, &obj->vma_list); |
2781 | if (!i915_is_ggtt(vm)) | |
e07f0552 | 2782 | i915_ppgtt_get(i915_vm_to_ppgtt(vm)); |
6f65e29a BW |
2783 | |
2784 | return vma; | |
2785 | } | |
2786 | ||
2787 | struct i915_vma * | |
ec7adb6e JL |
2788 | i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj, |
2789 | struct i915_address_space *vm) | |
2790 | { | |
2791 | struct i915_vma *vma; | |
2792 | ||
2793 | vma = i915_gem_obj_to_vma(obj, vm); | |
2794 | if (!vma) | |
2795 | vma = __i915_gem_vma_create(obj, vm, | |
2796 | i915_is_ggtt(vm) ? &i915_ggtt_view_normal : NULL); | |
2797 | ||
2798 | return vma; | |
2799 | } | |
2800 | ||
2801 | struct i915_vma * | |
2802 | i915_gem_obj_lookup_or_create_ggtt_vma(struct drm_i915_gem_object *obj, | |
fe14d5f4 | 2803 | const struct i915_ggtt_view *view) |
6f65e29a | 2804 | { |
ec7adb6e | 2805 | struct i915_address_space *ggtt = i915_obj_to_ggtt(obj); |
6f65e29a BW |
2806 | struct i915_vma *vma; |
2807 | ||
ec7adb6e JL |
2808 | if (WARN_ON(!view)) |
2809 | return ERR_PTR(-EINVAL); | |
2810 | ||
2811 | vma = i915_gem_obj_to_ggtt_view(obj, view); | |
2812 | ||
2813 | if (IS_ERR(vma)) | |
2814 | return vma; | |
2815 | ||
6f65e29a | 2816 | if (!vma) |
ec7adb6e | 2817 | vma = __i915_gem_vma_create(obj, ggtt, view); |
6f65e29a BW |
2818 | |
2819 | return vma; | |
ec7adb6e | 2820 | |
6f65e29a | 2821 | } |
fe14d5f4 | 2822 | |
50470bb0 TU |
2823 | static void |
2824 | rotate_pages(dma_addr_t *in, unsigned int width, unsigned int height, | |
2825 | struct sg_table *st) | |
2826 | { | |
2827 | unsigned int column, row; | |
2828 | unsigned int src_idx; | |
2829 | struct scatterlist *sg = st->sgl; | |
2830 | ||
2831 | st->nents = 0; | |
2832 | ||
2833 | for (column = 0; column < width; column++) { | |
2834 | src_idx = width * (height - 1) + column; | |
2835 | for (row = 0; row < height; row++) { | |
2836 | st->nents++; | |
2837 | /* We don't need the pages, but need to initialize | |
2838 | * the entries so the sg list can be happily traversed. | |
2839 | * The only thing we need are DMA addresses. | |
2840 | */ | |
2841 | sg_set_page(sg, NULL, PAGE_SIZE, 0); | |
2842 | sg_dma_address(sg) = in[src_idx]; | |
2843 | sg_dma_len(sg) = PAGE_SIZE; | |
2844 | sg = sg_next(sg); | |
2845 | src_idx -= width; | |
2846 | } | |
2847 | } | |
2848 | } | |
2849 | ||
2850 | static struct sg_table * | |
2851 | intel_rotate_fb_obj_pages(struct i915_ggtt_view *ggtt_view, | |
2852 | struct drm_i915_gem_object *obj) | |
2853 | { | |
50470bb0 | 2854 | struct intel_rotation_info *rot_info = &ggtt_view->rotation_info; |
84fe03f7 | 2855 | unsigned int size_pages = rot_info->size >> PAGE_SHIFT; |
50470bb0 TU |
2856 | struct sg_page_iter sg_iter; |
2857 | unsigned long i; | |
2858 | dma_addr_t *page_addr_list; | |
2859 | struct sg_table *st; | |
1d00dad5 | 2860 | int ret = -ENOMEM; |
50470bb0 | 2861 | |
50470bb0 | 2862 | /* Allocate a temporary list of source pages for random access. */ |
84fe03f7 TU |
2863 | page_addr_list = drm_malloc_ab(obj->base.size / PAGE_SIZE, |
2864 | sizeof(dma_addr_t)); | |
50470bb0 TU |
2865 | if (!page_addr_list) |
2866 | return ERR_PTR(ret); | |
2867 | ||
2868 | /* Allocate target SG list. */ | |
2869 | st = kmalloc(sizeof(*st), GFP_KERNEL); | |
2870 | if (!st) | |
2871 | goto err_st_alloc; | |
2872 | ||
84fe03f7 | 2873 | ret = sg_alloc_table(st, size_pages, GFP_KERNEL); |
50470bb0 TU |
2874 | if (ret) |
2875 | goto err_sg_alloc; | |
2876 | ||
2877 | /* Populate source page list from the object. */ | |
2878 | i = 0; | |
2879 | for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) { | |
2880 | page_addr_list[i] = sg_page_iter_dma_address(&sg_iter); | |
2881 | i++; | |
2882 | } | |
2883 | ||
2884 | /* Rotate the pages. */ | |
84fe03f7 TU |
2885 | rotate_pages(page_addr_list, |
2886 | rot_info->width_pages, rot_info->height_pages, | |
2887 | st); | |
50470bb0 TU |
2888 | |
2889 | DRM_DEBUG_KMS( | |
84fe03f7 | 2890 | "Created rotated page mapping for object size %zu (pitch=%u, height=%u, pixel_format=0x%x, %ux%u tiles, %u pages).\n", |
c9f8fd2d | 2891 | obj->base.size, rot_info->pitch, rot_info->height, |
84fe03f7 TU |
2892 | rot_info->pixel_format, rot_info->width_pages, |
2893 | rot_info->height_pages, size_pages); | |
50470bb0 TU |
2894 | |
2895 | drm_free_large(page_addr_list); | |
2896 | ||
2897 | return st; | |
2898 | ||
2899 | err_sg_alloc: | |
2900 | kfree(st); | |
2901 | err_st_alloc: | |
2902 | drm_free_large(page_addr_list); | |
2903 | ||
2904 | DRM_DEBUG_KMS( | |
84fe03f7 | 2905 | "Failed to create rotated mapping for object size %zu! (%d) (pitch=%u, height=%u, pixel_format=0x%x, %ux%u tiles, %u pages)\n", |
c9f8fd2d | 2906 | obj->base.size, ret, rot_info->pitch, rot_info->height, |
84fe03f7 TU |
2907 | rot_info->pixel_format, rot_info->width_pages, |
2908 | rot_info->height_pages, size_pages); | |
50470bb0 TU |
2909 | return ERR_PTR(ret); |
2910 | } | |
ec7adb6e | 2911 | |
8bd7ef16 JL |
2912 | static struct sg_table * |
2913 | intel_partial_pages(const struct i915_ggtt_view *view, | |
2914 | struct drm_i915_gem_object *obj) | |
2915 | { | |
2916 | struct sg_table *st; | |
2917 | struct scatterlist *sg; | |
2918 | struct sg_page_iter obj_sg_iter; | |
2919 | int ret = -ENOMEM; | |
2920 | ||
2921 | st = kmalloc(sizeof(*st), GFP_KERNEL); | |
2922 | if (!st) | |
2923 | goto err_st_alloc; | |
2924 | ||
2925 | ret = sg_alloc_table(st, view->params.partial.size, GFP_KERNEL); | |
2926 | if (ret) | |
2927 | goto err_sg_alloc; | |
2928 | ||
2929 | sg = st->sgl; | |
2930 | st->nents = 0; | |
2931 | for_each_sg_page(obj->pages->sgl, &obj_sg_iter, obj->pages->nents, | |
2932 | view->params.partial.offset) | |
2933 | { | |
2934 | if (st->nents >= view->params.partial.size) | |
2935 | break; | |
2936 | ||
2937 | sg_set_page(sg, NULL, PAGE_SIZE, 0); | |
2938 | sg_dma_address(sg) = sg_page_iter_dma_address(&obj_sg_iter); | |
2939 | sg_dma_len(sg) = PAGE_SIZE; | |
2940 | ||
2941 | sg = sg_next(sg); | |
2942 | st->nents++; | |
2943 | } | |
2944 | ||
2945 | return st; | |
2946 | ||
2947 | err_sg_alloc: | |
2948 | kfree(st); | |
2949 | err_st_alloc: | |
2950 | return ERR_PTR(ret); | |
2951 | } | |
2952 | ||
70b9f6f8 | 2953 | static int |
50470bb0 | 2954 | i915_get_ggtt_vma_pages(struct i915_vma *vma) |
fe14d5f4 | 2955 | { |
50470bb0 TU |
2956 | int ret = 0; |
2957 | ||
fe14d5f4 TU |
2958 | if (vma->ggtt_view.pages) |
2959 | return 0; | |
2960 | ||
2961 | if (vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) | |
2962 | vma->ggtt_view.pages = vma->obj->pages; | |
50470bb0 TU |
2963 | else if (vma->ggtt_view.type == I915_GGTT_VIEW_ROTATED) |
2964 | vma->ggtt_view.pages = | |
2965 | intel_rotate_fb_obj_pages(&vma->ggtt_view, vma->obj); | |
8bd7ef16 JL |
2966 | else if (vma->ggtt_view.type == I915_GGTT_VIEW_PARTIAL) |
2967 | vma->ggtt_view.pages = | |
2968 | intel_partial_pages(&vma->ggtt_view, vma->obj); | |
fe14d5f4 TU |
2969 | else |
2970 | WARN_ONCE(1, "GGTT view %u not implemented!\n", | |
2971 | vma->ggtt_view.type); | |
2972 | ||
2973 | if (!vma->ggtt_view.pages) { | |
ec7adb6e | 2974 | DRM_ERROR("Failed to get pages for GGTT view type %u!\n", |
fe14d5f4 | 2975 | vma->ggtt_view.type); |
50470bb0 TU |
2976 | ret = -EINVAL; |
2977 | } else if (IS_ERR(vma->ggtt_view.pages)) { | |
2978 | ret = PTR_ERR(vma->ggtt_view.pages); | |
2979 | vma->ggtt_view.pages = NULL; | |
2980 | DRM_ERROR("Failed to get pages for VMA view type %u (%d)!\n", | |
2981 | vma->ggtt_view.type, ret); | |
fe14d5f4 TU |
2982 | } |
2983 | ||
50470bb0 | 2984 | return ret; |
fe14d5f4 TU |
2985 | } |
2986 | ||
2987 | /** | |
2988 | * i915_vma_bind - Sets up PTEs for an VMA in it's corresponding address space. | |
2989 | * @vma: VMA to map | |
2990 | * @cache_level: mapping cache level | |
2991 | * @flags: flags like global or local mapping | |
2992 | * | |
2993 | * DMA addresses are taken from the scatter-gather table of this object (or of | |
2994 | * this VMA in case of non-default GGTT views) and PTE entries set up. | |
2995 | * Note that DMA addresses are also the only part of the SG table we care about. | |
2996 | */ | |
2997 | int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level, | |
2998 | u32 flags) | |
2999 | { | |
75d04a37 MK |
3000 | int ret; |
3001 | u32 bind_flags; | |
1d335d1b | 3002 | |
75d04a37 MK |
3003 | if (WARN_ON(flags == 0)) |
3004 | return -EINVAL; | |
1d335d1b | 3005 | |
75d04a37 | 3006 | bind_flags = 0; |
0875546c DV |
3007 | if (flags & PIN_GLOBAL) |
3008 | bind_flags |= GLOBAL_BIND; | |
3009 | if (flags & PIN_USER) | |
3010 | bind_flags |= LOCAL_BIND; | |
3011 | ||
3012 | if (flags & PIN_UPDATE) | |
3013 | bind_flags |= vma->bound; | |
3014 | else | |
3015 | bind_flags &= ~vma->bound; | |
3016 | ||
75d04a37 MK |
3017 | if (bind_flags == 0) |
3018 | return 0; | |
3019 | ||
3020 | if (vma->bound == 0 && vma->vm->allocate_va_range) { | |
3021 | trace_i915_va_alloc(vma->vm, | |
3022 | vma->node.start, | |
3023 | vma->node.size, | |
3024 | VM_TO_TRACE_NAME(vma->vm)); | |
3025 | ||
b2dd4511 MK |
3026 | /* XXX: i915_vma_pin() will fix this +- hack */ |
3027 | vma->pin_count++; | |
75d04a37 MK |
3028 | ret = vma->vm->allocate_va_range(vma->vm, |
3029 | vma->node.start, | |
3030 | vma->node.size); | |
b2dd4511 | 3031 | vma->pin_count--; |
75d04a37 MK |
3032 | if (ret) |
3033 | return ret; | |
3034 | } | |
3035 | ||
3036 | ret = vma->vm->bind_vma(vma, cache_level, bind_flags); | |
70b9f6f8 DV |
3037 | if (ret) |
3038 | return ret; | |
0875546c DV |
3039 | |
3040 | vma->bound |= bind_flags; | |
fe14d5f4 TU |
3041 | |
3042 | return 0; | |
3043 | } | |
91e6711e JL |
3044 | |
3045 | /** | |
3046 | * i915_ggtt_view_size - Get the size of a GGTT view. | |
3047 | * @obj: Object the view is of. | |
3048 | * @view: The view in question. | |
3049 | * | |
3050 | * @return The size of the GGTT view in bytes. | |
3051 | */ | |
3052 | size_t | |
3053 | i915_ggtt_view_size(struct drm_i915_gem_object *obj, | |
3054 | const struct i915_ggtt_view *view) | |
3055 | { | |
9e759ff1 | 3056 | if (view->type == I915_GGTT_VIEW_NORMAL) { |
91e6711e | 3057 | return obj->base.size; |
9e759ff1 TU |
3058 | } else if (view->type == I915_GGTT_VIEW_ROTATED) { |
3059 | return view->rotation_info.size; | |
8bd7ef16 JL |
3060 | } else if (view->type == I915_GGTT_VIEW_PARTIAL) { |
3061 | return view->params.partial.size << PAGE_SHIFT; | |
91e6711e JL |
3062 | } else { |
3063 | WARN_ONCE(1, "GGTT view %u not implemented!\n", view->type); | |
3064 | return obj->base.size; | |
3065 | } | |
3066 | } |