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771fe6b9 JG |
1 | /* |
2 | * Copyright 2008 Advanced Micro Devices, Inc. | |
3 | * Copyright 2008 Red Hat Inc. | |
4 | * Copyright 2009 Jerome Glisse. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the "Software"), | |
8 | * to deal in the Software without restriction, including without limitation | |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
10 | * and/or sell copies of the Software, and to permit persons to whom the | |
11 | * Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
22 | * OTHER DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | * Authors: Dave Airlie | |
25 | * Alex Deucher | |
26 | * Jerome Glisse | |
27 | */ | |
760285e7 DH |
28 | #include <drm/drmP.h> |
29 | #include <drm/radeon_drm.h> | |
771fe6b9 | 30 | #include "radeon.h" |
771fe6b9 | 31 | |
03eec93b AD |
32 | /* |
33 | * GART | |
34 | * The GART (Graphics Aperture Remapping Table) is an aperture | |
35 | * in the GPU's address space. System pages can be mapped into | |
36 | * the aperture and look like contiguous pages from the GPU's | |
37 | * perspective. A page table maps the pages in the aperture | |
38 | * to the actual backing pages in system memory. | |
39 | * | |
40 | * Radeon GPUs support both an internal GART, as described above, | |
41 | * and AGP. AGP works similarly, but the GART table is configured | |
42 | * and maintained by the northbridge rather than the driver. | |
43 | * Radeon hw has a separate AGP aperture that is programmed to | |
44 | * point to the AGP aperture provided by the northbridge and the | |
45 | * requests are passed through to the northbridge aperture. | |
46 | * Both AGP and internal GART can be used at the same time, however | |
47 | * that is not currently supported by the driver. | |
48 | * | |
49 | * This file handles the common internal GART management. | |
50 | */ | |
51 | ||
771fe6b9 JG |
52 | /* |
53 | * Common GART table functions. | |
54 | */ | |
03eec93b AD |
55 | /** |
56 | * radeon_gart_table_ram_alloc - allocate system ram for gart page table | |
57 | * | |
58 | * @rdev: radeon_device pointer | |
59 | * | |
60 | * Allocate system memory for GART page table | |
61 | * (r1xx-r3xx, non-pcie r4xx, rs400). These asics require the | |
62 | * gart table to be in system memory. | |
63 | * Returns 0 for success, -ENOMEM for failure. | |
64 | */ | |
771fe6b9 JG |
65 | int radeon_gart_table_ram_alloc(struct radeon_device *rdev) |
66 | { | |
67 | void *ptr; | |
68 | ||
69 | ptr = pci_alloc_consistent(rdev->pdev, rdev->gart.table_size, | |
70 | &rdev->gart.table_addr); | |
71 | if (ptr == NULL) { | |
72 | return -ENOMEM; | |
73 | } | |
74 | #ifdef CONFIG_X86 | |
75 | if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480 || | |
76 | rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) { | |
77 | set_memory_uc((unsigned long)ptr, | |
78 | rdev->gart.table_size >> PAGE_SHIFT); | |
79 | } | |
80 | #endif | |
c9a1be96 JG |
81 | rdev->gart.ptr = ptr; |
82 | memset((void *)rdev->gart.ptr, 0, rdev->gart.table_size); | |
771fe6b9 JG |
83 | return 0; |
84 | } | |
85 | ||
03eec93b AD |
86 | /** |
87 | * radeon_gart_table_ram_free - free system ram for gart page table | |
88 | * | |
89 | * @rdev: radeon_device pointer | |
90 | * | |
91 | * Free system memory for GART page table | |
92 | * (r1xx-r3xx, non-pcie r4xx, rs400). These asics require the | |
93 | * gart table to be in system memory. | |
94 | */ | |
771fe6b9 JG |
95 | void radeon_gart_table_ram_free(struct radeon_device *rdev) |
96 | { | |
c9a1be96 | 97 | if (rdev->gart.ptr == NULL) { |
771fe6b9 JG |
98 | return; |
99 | } | |
100 | #ifdef CONFIG_X86 | |
101 | if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480 || | |
102 | rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) { | |
c9a1be96 | 103 | set_memory_wb((unsigned long)rdev->gart.ptr, |
771fe6b9 JG |
104 | rdev->gart.table_size >> PAGE_SHIFT); |
105 | } | |
106 | #endif | |
107 | pci_free_consistent(rdev->pdev, rdev->gart.table_size, | |
c9a1be96 | 108 | (void *)rdev->gart.ptr, |
771fe6b9 | 109 | rdev->gart.table_addr); |
c9a1be96 | 110 | rdev->gart.ptr = NULL; |
771fe6b9 JG |
111 | rdev->gart.table_addr = 0; |
112 | } | |
113 | ||
03eec93b AD |
114 | /** |
115 | * radeon_gart_table_vram_alloc - allocate vram for gart page table | |
116 | * | |
117 | * @rdev: radeon_device pointer | |
118 | * | |
119 | * Allocate video memory for GART page table | |
120 | * (pcie r4xx, r5xx+). These asics require the | |
121 | * gart table to be in video memory. | |
122 | * Returns 0 for success, error for failure. | |
123 | */ | |
771fe6b9 JG |
124 | int radeon_gart_table_vram_alloc(struct radeon_device *rdev) |
125 | { | |
771fe6b9 JG |
126 | int r; |
127 | ||
c9a1be96 | 128 | if (rdev->gart.robj == NULL) { |
441921d5 | 129 | r = radeon_bo_create(rdev, rdev->gart.table_size, |
268b2510 | 130 | PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM, |
831b6966 | 131 | 0, NULL, NULL, &rdev->gart.robj); |
771fe6b9 JG |
132 | if (r) { |
133 | return r; | |
134 | } | |
135 | } | |
4aac0473 JG |
136 | return 0; |
137 | } | |
138 | ||
03eec93b AD |
139 | /** |
140 | * radeon_gart_table_vram_pin - pin gart page table in vram | |
141 | * | |
142 | * @rdev: radeon_device pointer | |
143 | * | |
144 | * Pin the GART page table in vram so it will not be moved | |
145 | * by the memory manager (pcie r4xx, r5xx+). These asics require the | |
146 | * gart table to be in video memory. | |
147 | * Returns 0 for success, error for failure. | |
148 | */ | |
4aac0473 JG |
149 | int radeon_gart_table_vram_pin(struct radeon_device *rdev) |
150 | { | |
151 | uint64_t gpu_addr; | |
152 | int r; | |
153 | ||
c9a1be96 | 154 | r = radeon_bo_reserve(rdev->gart.robj, false); |
4c788679 | 155 | if (unlikely(r != 0)) |
771fe6b9 | 156 | return r; |
c9a1be96 | 157 | r = radeon_bo_pin(rdev->gart.robj, |
4c788679 | 158 | RADEON_GEM_DOMAIN_VRAM, &gpu_addr); |
771fe6b9 | 159 | if (r) { |
c9a1be96 | 160 | radeon_bo_unreserve(rdev->gart.robj); |
771fe6b9 JG |
161 | return r; |
162 | } | |
c9a1be96 | 163 | r = radeon_bo_kmap(rdev->gart.robj, &rdev->gart.ptr); |
4c788679 | 164 | if (r) |
c9a1be96 JG |
165 | radeon_bo_unpin(rdev->gart.robj); |
166 | radeon_bo_unreserve(rdev->gart.robj); | |
771fe6b9 | 167 | rdev->gart.table_addr = gpu_addr; |
5636d2f8 MD |
168 | |
169 | if (!r) { | |
170 | int i; | |
171 | ||
172 | /* We might have dropped some GART table updates while it wasn't | |
173 | * mapped, restore all entries | |
174 | */ | |
175 | for (i = 0; i < rdev->gart.num_gpu_pages; i++) | |
176 | radeon_gart_set_page(rdev, i, rdev->gart.pages_entry[i]); | |
177 | mb(); | |
178 | radeon_gart_tlb_flush(rdev); | |
179 | } | |
180 | ||
4c788679 | 181 | return r; |
771fe6b9 JG |
182 | } |
183 | ||
03eec93b AD |
184 | /** |
185 | * radeon_gart_table_vram_unpin - unpin gart page table in vram | |
186 | * | |
187 | * @rdev: radeon_device pointer | |
188 | * | |
189 | * Unpin the GART page table in vram (pcie r4xx, r5xx+). | |
190 | * These asics require the gart table to be in video memory. | |
191 | */ | |
c9a1be96 | 192 | void radeon_gart_table_vram_unpin(struct radeon_device *rdev) |
771fe6b9 | 193 | { |
4c788679 JG |
194 | int r; |
195 | ||
c9a1be96 | 196 | if (rdev->gart.robj == NULL) { |
771fe6b9 JG |
197 | return; |
198 | } | |
c9a1be96 | 199 | r = radeon_bo_reserve(rdev->gart.robj, false); |
4c788679 | 200 | if (likely(r == 0)) { |
c9a1be96 JG |
201 | radeon_bo_kunmap(rdev->gart.robj); |
202 | radeon_bo_unpin(rdev->gart.robj); | |
203 | radeon_bo_unreserve(rdev->gart.robj); | |
204 | rdev->gart.ptr = NULL; | |
205 | } | |
206 | } | |
207 | ||
03eec93b AD |
208 | /** |
209 | * radeon_gart_table_vram_free - free gart page table vram | |
210 | * | |
211 | * @rdev: radeon_device pointer | |
212 | * | |
213 | * Free the video memory used for the GART page table | |
214 | * (pcie r4xx, r5xx+). These asics require the gart table to | |
215 | * be in video memory. | |
216 | */ | |
c9a1be96 JG |
217 | void radeon_gart_table_vram_free(struct radeon_device *rdev) |
218 | { | |
219 | if (rdev->gart.robj == NULL) { | |
220 | return; | |
4c788679 | 221 | } |
c9a1be96 | 222 | radeon_bo_unref(&rdev->gart.robj); |
771fe6b9 JG |
223 | } |
224 | ||
771fe6b9 JG |
225 | /* |
226 | * Common gart functions. | |
227 | */ | |
03eec93b AD |
228 | /** |
229 | * radeon_gart_unbind - unbind pages from the gart page table | |
230 | * | |
231 | * @rdev: radeon_device pointer | |
232 | * @offset: offset into the GPU's gart aperture | |
233 | * @pages: number of pages to unbind | |
234 | * | |
235 | * Unbinds the requested pages from the gart page table and | |
236 | * replaces them with the dummy page (all asics). | |
237 | */ | |
771fe6b9 JG |
238 | void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset, |
239 | int pages) | |
240 | { | |
241 | unsigned t; | |
242 | unsigned p; | |
243 | int i, j; | |
244 | ||
245 | if (!rdev->gart.ready) { | |
fcf4de5a | 246 | WARN(1, "trying to unbind memory from uninitialized GART !\n"); |
771fe6b9 JG |
247 | return; |
248 | } | |
a77f1718 MT |
249 | t = offset / RADEON_GPU_PAGE_SIZE; |
250 | p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); | |
771fe6b9 JG |
251 | for (i = 0; i < pages; i++, p++) { |
252 | if (rdev->gart.pages[p]) { | |
771fe6b9 | 253 | rdev->gart.pages[p] = NULL; |
a77f1718 | 254 | for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) { |
cb658906 | 255 | rdev->gart.pages_entry[t] = rdev->dummy_page.entry; |
c9a1be96 | 256 | if (rdev->gart.ptr) { |
cb658906 MD |
257 | radeon_gart_set_page(rdev, t, |
258 | rdev->dummy_page.entry); | |
c9a1be96 | 259 | } |
771fe6b9 JG |
260 | } |
261 | } | |
262 | } | |
233709d2 MD |
263 | if (rdev->gart.ptr) { |
264 | mb(); | |
265 | radeon_gart_tlb_flush(rdev); | |
266 | } | |
771fe6b9 JG |
267 | } |
268 | ||
03eec93b AD |
269 | /** |
270 | * radeon_gart_bind - bind pages into the gart page table | |
271 | * | |
272 | * @rdev: radeon_device pointer | |
273 | * @offset: offset into the GPU's gart aperture | |
274 | * @pages: number of pages to bind | |
275 | * @pagelist: pages to bind | |
276 | * @dma_addr: DMA addresses of pages | |
77497f27 | 277 | * @flags: RADEON_GART_PAGE_* flags |
03eec93b AD |
278 | * |
279 | * Binds the requested pages to the gart page table | |
280 | * (all asics). | |
281 | * Returns 0 for success, -EINVAL for failure. | |
282 | */ | |
771fe6b9 | 283 | int radeon_gart_bind(struct radeon_device *rdev, unsigned offset, |
77497f27 MD |
284 | int pages, struct page **pagelist, dma_addr_t *dma_addr, |
285 | uint32_t flags) | |
771fe6b9 JG |
286 | { |
287 | unsigned t; | |
288 | unsigned p; | |
cb658906 | 289 | uint64_t page_base, page_entry; |
771fe6b9 JG |
290 | int i, j; |
291 | ||
292 | if (!rdev->gart.ready) { | |
fcf4de5a | 293 | WARN(1, "trying to bind memory to uninitialized GART !\n"); |
771fe6b9 JG |
294 | return -EINVAL; |
295 | } | |
a77f1718 MT |
296 | t = offset / RADEON_GPU_PAGE_SIZE; |
297 | p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); | |
771fe6b9 JG |
298 | |
299 | for (i = 0; i < pages; i++, p++) { | |
771fe6b9 | 300 | rdev->gart.pages[p] = pagelist[i]; |
cb658906 MD |
301 | page_base = dma_addr[i]; |
302 | for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) { | |
303 | page_entry = radeon_gart_get_page_entry(page_base, flags); | |
304 | rdev->gart.pages_entry[t] = page_entry; | |
305 | if (rdev->gart.ptr) { | |
306 | radeon_gart_set_page(rdev, t, page_entry); | |
c9a1be96 | 307 | } |
cb658906 | 308 | page_base += RADEON_GPU_PAGE_SIZE; |
771fe6b9 JG |
309 | } |
310 | } | |
233709d2 MD |
311 | if (rdev->gart.ptr) { |
312 | mb(); | |
313 | radeon_gart_tlb_flush(rdev); | |
314 | } | |
771fe6b9 JG |
315 | return 0; |
316 | } | |
317 | ||
03eec93b AD |
318 | /** |
319 | * radeon_gart_init - init the driver info for managing the gart | |
320 | * | |
321 | * @rdev: radeon_device pointer | |
322 | * | |
323 | * Allocate the dummy page and init the gart driver info (all asics). | |
324 | * Returns 0 for success, error for failure. | |
325 | */ | |
771fe6b9 JG |
326 | int radeon_gart_init(struct radeon_device *rdev) |
327 | { | |
82568565 DA |
328 | int r, i; |
329 | ||
771fe6b9 JG |
330 | if (rdev->gart.pages) { |
331 | return 0; | |
332 | } | |
a77f1718 MT |
333 | /* We need PAGE_SIZE >= RADEON_GPU_PAGE_SIZE */ |
334 | if (PAGE_SIZE < RADEON_GPU_PAGE_SIZE) { | |
771fe6b9 JG |
335 | DRM_ERROR("Page size is smaller than GPU page size!\n"); |
336 | return -EINVAL; | |
337 | } | |
82568565 DA |
338 | r = radeon_dummy_page_init(rdev); |
339 | if (r) | |
340 | return r; | |
771fe6b9 JG |
341 | /* Compute table size */ |
342 | rdev->gart.num_cpu_pages = rdev->mc.gtt_size / PAGE_SIZE; | |
a77f1718 | 343 | rdev->gart.num_gpu_pages = rdev->mc.gtt_size / RADEON_GPU_PAGE_SIZE; |
771fe6b9 JG |
344 | DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n", |
345 | rdev->gart.num_cpu_pages, rdev->gart.num_gpu_pages); | |
346 | /* Allocate pages table */ | |
59240ee3 | 347 | rdev->gart.pages = vzalloc(sizeof(void *) * rdev->gart.num_cpu_pages); |
771fe6b9 JG |
348 | if (rdev->gart.pages == NULL) { |
349 | radeon_gart_fini(rdev); | |
350 | return -ENOMEM; | |
351 | } | |
cb658906 MD |
352 | rdev->gart.pages_entry = vmalloc(sizeof(uint64_t) * |
353 | rdev->gart.num_gpu_pages); | |
354 | if (rdev->gart.pages_entry == NULL) { | |
355 | radeon_gart_fini(rdev); | |
356 | return -ENOMEM; | |
357 | } | |
82568565 | 358 | /* set GART entry to point to the dummy page by default */ |
cb658906 MD |
359 | for (i = 0; i < rdev->gart.num_gpu_pages; i++) |
360 | rdev->gart.pages_entry[i] = rdev->dummy_page.entry; | |
771fe6b9 JG |
361 | return 0; |
362 | } | |
363 | ||
03eec93b AD |
364 | /** |
365 | * radeon_gart_fini - tear down the driver info for managing the gart | |
366 | * | |
367 | * @rdev: radeon_device pointer | |
368 | * | |
369 | * Tear down the gart driver info and free the dummy page (all asics). | |
370 | */ | |
771fe6b9 JG |
371 | void radeon_gart_fini(struct radeon_device *rdev) |
372 | { | |
cb658906 | 373 | if (rdev->gart.ready) { |
771fe6b9 JG |
374 | /* unbind pages */ |
375 | radeon_gart_unbind(rdev, 0, rdev->gart.num_cpu_pages); | |
376 | } | |
377 | rdev->gart.ready = false; | |
59240ee3 | 378 | vfree(rdev->gart.pages); |
cb658906 | 379 | vfree(rdev->gart.pages_entry); |
771fe6b9 | 380 | rdev->gart.pages = NULL; |
cb658906 | 381 | rdev->gart.pages_entry = NULL; |
92656d70 AD |
382 | |
383 | radeon_dummy_page_fini(rdev); | |
771fe6b9 | 384 | } |