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2280ab57 CK |
1 | /* |
2 | * Copyright 2008 Advanced Micro Devices, Inc. | |
3 | * Copyright 2008 Red Hat Inc. | |
4 | * Copyright 2009 Jerome Glisse. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the "Software"), | |
8 | * to deal in the Software without restriction, including without limitation | |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
10 | * and/or sell copies of the Software, and to permit persons to whom the | |
11 | * Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
22 | * OTHER DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | * Authors: Dave Airlie | |
25 | * Alex Deucher | |
26 | * Jerome Glisse | |
27 | */ | |
28 | #include <drm/drmP.h> | |
29 | #include <drm/radeon_drm.h> | |
30 | #include "radeon.h" | |
31 | #include "radeon_trace.h" | |
32 | ||
33 | /* | |
34 | * GPUVM | |
35 | * GPUVM is similar to the legacy gart on older asics, however | |
36 | * rather than there being a single global gart table | |
37 | * for the entire GPU, there are multiple VM page tables active | |
38 | * at any given time. The VM page tables can contain a mix | |
39 | * vram pages and system memory pages and system memory pages | |
40 | * can be mapped as snooped (cached system pages) or unsnooped | |
41 | * (uncached system pages). | |
42 | * Each VM has an ID associated with it and there is a page table | |
43 | * associated with each VMID. When execting a command buffer, | |
44 | * the kernel tells the the ring what VMID to use for that command | |
45 | * buffer. VMIDs are allocated dynamically as commands are submitted. | |
46 | * The userspace drivers maintain their own address space and the kernel | |
47 | * sets up their pages tables accordingly when they submit their | |
48 | * command buffers and a VMID is assigned. | |
49 | * Cayman/Trinity support up to 8 active VMs at any given time; | |
50 | * SI supports 16. | |
51 | */ | |
52 | ||
53 | /** | |
54 | * radeon_vm_num_pde - return the number of page directory entries | |
55 | * | |
56 | * @rdev: radeon_device pointer | |
57 | * | |
58 | * Calculate the number of page directory entries (cayman+). | |
59 | */ | |
60 | static unsigned radeon_vm_num_pdes(struct radeon_device *rdev) | |
61 | { | |
4510fb98 | 62 | return rdev->vm_manager.max_pfn >> radeon_vm_block_size; |
2280ab57 CK |
63 | } |
64 | ||
65 | /** | |
66 | * radeon_vm_directory_size - returns the size of the page directory in bytes | |
67 | * | |
68 | * @rdev: radeon_device pointer | |
69 | * | |
70 | * Calculate the size of the page directory in bytes (cayman+). | |
71 | */ | |
72 | static unsigned radeon_vm_directory_size(struct radeon_device *rdev) | |
73 | { | |
74 | return RADEON_GPU_PAGE_ALIGN(radeon_vm_num_pdes(rdev) * 8); | |
75 | } | |
76 | ||
77 | /** | |
78 | * radeon_vm_manager_init - init the vm manager | |
79 | * | |
80 | * @rdev: radeon_device pointer | |
81 | * | |
82 | * Init the vm manager (cayman+). | |
83 | * Returns 0 for success, error for failure. | |
84 | */ | |
85 | int radeon_vm_manager_init(struct radeon_device *rdev) | |
86 | { | |
2280ab57 | 87 | int r; |
2280ab57 CK |
88 | |
89 | if (!rdev->vm_manager.enabled) { | |
2280ab57 CK |
90 | r = radeon_asic_vm_init(rdev); |
91 | if (r) | |
92 | return r; | |
93 | ||
94 | rdev->vm_manager.enabled = true; | |
2280ab57 CK |
95 | } |
96 | return 0; | |
97 | } | |
98 | ||
2280ab57 CK |
99 | /** |
100 | * radeon_vm_manager_fini - tear down the vm manager | |
101 | * | |
102 | * @rdev: radeon_device pointer | |
103 | * | |
104 | * Tear down the VM manager (cayman+). | |
105 | */ | |
106 | void radeon_vm_manager_fini(struct radeon_device *rdev) | |
107 | { | |
2280ab57 CK |
108 | int i; |
109 | ||
110 | if (!rdev->vm_manager.enabled) | |
111 | return; | |
112 | ||
6d2f2944 | 113 | for (i = 0; i < RADEON_NUM_VM; ++i) |
2280ab57 | 114 | radeon_fence_unref(&rdev->vm_manager.active[i]); |
2280ab57 | 115 | radeon_asic_vm_fini(rdev); |
2280ab57 CK |
116 | rdev->vm_manager.enabled = false; |
117 | } | |
118 | ||
119 | /** | |
6d2f2944 | 120 | * radeon_vm_get_bos - add the vm BOs to a validation list |
2280ab57 | 121 | * |
6d2f2944 CK |
122 | * @vm: vm providing the BOs |
123 | * @head: head of validation list | |
2280ab57 | 124 | * |
6d2f2944 CK |
125 | * Add the page directory to the list of BOs to |
126 | * validate for command submission (cayman+). | |
2280ab57 | 127 | */ |
df0af440 CK |
128 | struct radeon_cs_reloc *radeon_vm_get_bos(struct radeon_device *rdev, |
129 | struct radeon_vm *vm, | |
130 | struct list_head *head) | |
2280ab57 | 131 | { |
df0af440 | 132 | struct radeon_cs_reloc *list; |
7d95f6cc | 133 | unsigned i, idx; |
2280ab57 | 134 | |
e5a5fd4d MD |
135 | list = drm_malloc_ab(vm->max_pde_used + 2, |
136 | sizeof(struct radeon_cs_reloc)); | |
6d2f2944 CK |
137 | if (!list) |
138 | return NULL; | |
2280ab57 | 139 | |
6d2f2944 | 140 | /* add the vm page table to the list */ |
df0af440 CK |
141 | list[0].gobj = NULL; |
142 | list[0].robj = vm->page_directory; | |
ce6758c8 CK |
143 | list[0].prefered_domains = RADEON_GEM_DOMAIN_VRAM; |
144 | list[0].allowed_domains = RADEON_GEM_DOMAIN_VRAM; | |
6d2f2944 | 145 | list[0].tv.bo = &vm->page_directory->tbo; |
ae9c0af2 | 146 | list[0].tv.shared = false; |
df0af440 CK |
147 | list[0].tiling_flags = 0; |
148 | list[0].handle = 0; | |
6d2f2944 | 149 | list_add(&list[0].tv.head, head); |
2280ab57 | 150 | |
6d2f2944 CK |
151 | for (i = 0, idx = 1; i <= vm->max_pde_used; i++) { |
152 | if (!vm->page_tables[i].bo) | |
153 | continue; | |
2280ab57 | 154 | |
df0af440 CK |
155 | list[idx].gobj = NULL; |
156 | list[idx].robj = vm->page_tables[i].bo; | |
ce6758c8 CK |
157 | list[idx].prefered_domains = RADEON_GEM_DOMAIN_VRAM; |
158 | list[idx].allowed_domains = RADEON_GEM_DOMAIN_VRAM; | |
df0af440 | 159 | list[idx].tv.bo = &list[idx].robj->tbo; |
ae9c0af2 | 160 | list[idx].tv.shared = false; |
df0af440 CK |
161 | list[idx].tiling_flags = 0; |
162 | list[idx].handle = 0; | |
6d2f2944 | 163 | list_add(&list[idx++].tv.head, head); |
2280ab57 CK |
164 | } |
165 | ||
6d2f2944 | 166 | return list; |
2280ab57 CK |
167 | } |
168 | ||
169 | /** | |
170 | * radeon_vm_grab_id - allocate the next free VMID | |
171 | * | |
172 | * @rdev: radeon_device pointer | |
173 | * @vm: vm to allocate id for | |
174 | * @ring: ring we want to submit job to | |
175 | * | |
176 | * Allocate an id for the vm (cayman+). | |
177 | * Returns the fence we need to sync to (if any). | |
178 | * | |
179 | * Global and local mutex must be locked! | |
180 | */ | |
181 | struct radeon_fence *radeon_vm_grab_id(struct radeon_device *rdev, | |
182 | struct radeon_vm *vm, int ring) | |
183 | { | |
184 | struct radeon_fence *best[RADEON_NUM_RINGS] = {}; | |
185 | unsigned choices[2] = {}; | |
186 | unsigned i; | |
187 | ||
188 | /* check if the id is still valid */ | |
189 | if (vm->last_id_use && vm->last_id_use == rdev->vm_manager.active[vm->id]) | |
190 | return NULL; | |
191 | ||
192 | /* we definately need to flush */ | |
193 | radeon_fence_unref(&vm->last_flush); | |
194 | ||
195 | /* skip over VMID 0, since it is the system VM */ | |
196 | for (i = 1; i < rdev->vm_manager.nvm; ++i) { | |
197 | struct radeon_fence *fence = rdev->vm_manager.active[i]; | |
198 | ||
199 | if (fence == NULL) { | |
200 | /* found a free one */ | |
201 | vm->id = i; | |
202 | trace_radeon_vm_grab_id(vm->id, ring); | |
203 | return NULL; | |
204 | } | |
205 | ||
206 | if (radeon_fence_is_earlier(fence, best[fence->ring])) { | |
207 | best[fence->ring] = fence; | |
208 | choices[fence->ring == ring ? 0 : 1] = i; | |
209 | } | |
210 | } | |
211 | ||
212 | for (i = 0; i < 2; ++i) { | |
213 | if (choices[i]) { | |
214 | vm->id = choices[i]; | |
215 | trace_radeon_vm_grab_id(vm->id, ring); | |
216 | return rdev->vm_manager.active[choices[i]]; | |
217 | } | |
218 | } | |
219 | ||
220 | /* should never happen */ | |
221 | BUG(); | |
222 | return NULL; | |
223 | } | |
224 | ||
fa688343 CK |
225 | /** |
226 | * radeon_vm_flush - hardware flush the vm | |
227 | * | |
228 | * @rdev: radeon_device pointer | |
229 | * @vm: vm we want to flush | |
230 | * @ring: ring to use for flush | |
231 | * | |
232 | * Flush the vm (cayman+). | |
233 | * | |
234 | * Global and local mutex must be locked! | |
235 | */ | |
236 | void radeon_vm_flush(struct radeon_device *rdev, | |
237 | struct radeon_vm *vm, | |
238 | int ring) | |
239 | { | |
6d2f2944 CK |
240 | uint64_t pd_addr = radeon_bo_gpu_offset(vm->page_directory); |
241 | ||
fa688343 | 242 | /* if we can't remember our last VM flush then flush now! */ |
cd1c9c1a | 243 | if (!vm->last_flush || pd_addr != vm->pd_gpu_addr) { |
a3a9226d | 244 | trace_radeon_vm_flush(pd_addr, ring, vm->id); |
6d2f2944 | 245 | vm->pd_gpu_addr = pd_addr; |
fa688343 | 246 | radeon_ring_vm_flush(rdev, ring, vm); |
6d2f2944 | 247 | } |
fa688343 CK |
248 | } |
249 | ||
2280ab57 CK |
250 | /** |
251 | * radeon_vm_fence - remember fence for vm | |
252 | * | |
253 | * @rdev: radeon_device pointer | |
254 | * @vm: vm we want to fence | |
255 | * @fence: fence to remember | |
256 | * | |
257 | * Fence the vm (cayman+). | |
258 | * Set the fence used to protect page table and id. | |
259 | * | |
260 | * Global and local mutex must be locked! | |
261 | */ | |
262 | void radeon_vm_fence(struct radeon_device *rdev, | |
263 | struct radeon_vm *vm, | |
264 | struct radeon_fence *fence) | |
265 | { | |
2280ab57 CK |
266 | radeon_fence_unref(&vm->fence); |
267 | vm->fence = radeon_fence_ref(fence); | |
268 | ||
fa688343 CK |
269 | radeon_fence_unref(&rdev->vm_manager.active[vm->id]); |
270 | rdev->vm_manager.active[vm->id] = radeon_fence_ref(fence); | |
271 | ||
2280ab57 CK |
272 | radeon_fence_unref(&vm->last_id_use); |
273 | vm->last_id_use = radeon_fence_ref(fence); | |
fa688343 CK |
274 | |
275 | /* we just flushed the VM, remember that */ | |
276 | if (!vm->last_flush) | |
277 | vm->last_flush = radeon_fence_ref(fence); | |
2280ab57 CK |
278 | } |
279 | ||
280 | /** | |
281 | * radeon_vm_bo_find - find the bo_va for a specific vm & bo | |
282 | * | |
283 | * @vm: requested vm | |
284 | * @bo: requested buffer object | |
285 | * | |
286 | * Find @bo inside the requested vm (cayman+). | |
287 | * Search inside the @bos vm list for the requested vm | |
288 | * Returns the found bo_va or NULL if none is found | |
289 | * | |
290 | * Object has to be reserved! | |
291 | */ | |
292 | struct radeon_bo_va *radeon_vm_bo_find(struct radeon_vm *vm, | |
293 | struct radeon_bo *bo) | |
294 | { | |
295 | struct radeon_bo_va *bo_va; | |
296 | ||
297 | list_for_each_entry(bo_va, &bo->va, bo_list) { | |
298 | if (bo_va->vm == vm) { | |
299 | return bo_va; | |
300 | } | |
301 | } | |
302 | return NULL; | |
303 | } | |
304 | ||
305 | /** | |
306 | * radeon_vm_bo_add - add a bo to a specific vm | |
307 | * | |
308 | * @rdev: radeon_device pointer | |
309 | * @vm: requested vm | |
310 | * @bo: radeon buffer object | |
311 | * | |
312 | * Add @bo into the requested vm (cayman+). | |
313 | * Add @bo to the list of bos associated with the vm | |
314 | * Returns newly added bo_va or NULL for failure | |
315 | * | |
316 | * Object has to be reserved! | |
317 | */ | |
318 | struct radeon_bo_va *radeon_vm_bo_add(struct radeon_device *rdev, | |
319 | struct radeon_vm *vm, | |
320 | struct radeon_bo *bo) | |
321 | { | |
322 | struct radeon_bo_va *bo_va; | |
323 | ||
324 | bo_va = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL); | |
325 | if (bo_va == NULL) { | |
326 | return NULL; | |
327 | } | |
328 | bo_va->vm = vm; | |
329 | bo_va->bo = bo; | |
0aea5e4a AD |
330 | bo_va->it.start = 0; |
331 | bo_va->it.last = 0; | |
2280ab57 | 332 | bo_va->flags = 0; |
e31ad969 | 333 | bo_va->addr = 0; |
2280ab57 CK |
334 | bo_va->ref_count = 1; |
335 | INIT_LIST_HEAD(&bo_va->bo_list); | |
036bf46a | 336 | INIT_LIST_HEAD(&bo_va->vm_status); |
2280ab57 CK |
337 | |
338 | mutex_lock(&vm->mutex); | |
2280ab57 CK |
339 | list_add_tail(&bo_va->bo_list, &bo->va); |
340 | mutex_unlock(&vm->mutex); | |
341 | ||
342 | return bo_va; | |
343 | } | |
344 | ||
03f62abd CK |
345 | /** |
346 | * radeon_vm_set_pages - helper to call the right asic function | |
347 | * | |
348 | * @rdev: radeon_device pointer | |
349 | * @ib: indirect buffer to fill with commands | |
350 | * @pe: addr of the page entry | |
351 | * @addr: dst addr to write into pe | |
352 | * @count: number of page entries to update | |
353 | * @incr: increase next addr by incr bytes | |
354 | * @flags: hw access flags | |
355 | * | |
356 | * Traces the parameters and calls the right asic functions | |
357 | * to setup the page table using the DMA. | |
358 | */ | |
359 | static void radeon_vm_set_pages(struct radeon_device *rdev, | |
360 | struct radeon_ib *ib, | |
361 | uint64_t pe, | |
362 | uint64_t addr, unsigned count, | |
363 | uint32_t incr, uint32_t flags) | |
364 | { | |
365 | trace_radeon_vm_set_page(pe, addr, count, incr, flags); | |
366 | ||
367 | if ((flags & R600_PTE_GART_MASK) == R600_PTE_GART_MASK) { | |
368 | uint64_t src = rdev->gart.table_addr + (addr >> 12) * 8; | |
369 | radeon_asic_vm_copy_pages(rdev, ib, pe, src, count); | |
370 | ||
371 | } else if ((flags & R600_PTE_SYSTEM) || (count < 3)) { | |
372 | radeon_asic_vm_write_pages(rdev, ib, pe, addr, | |
373 | count, incr, flags); | |
374 | ||
375 | } else { | |
376 | radeon_asic_vm_set_pages(rdev, ib, pe, addr, | |
377 | count, incr, flags); | |
378 | } | |
379 | } | |
380 | ||
6d2f2944 CK |
381 | /** |
382 | * radeon_vm_clear_bo - initially clear the page dir/table | |
383 | * | |
384 | * @rdev: radeon_device pointer | |
385 | * @bo: bo to clear | |
386 | */ | |
387 | static int radeon_vm_clear_bo(struct radeon_device *rdev, | |
388 | struct radeon_bo *bo) | |
389 | { | |
390 | struct ttm_validate_buffer tv; | |
391 | struct ww_acquire_ctx ticket; | |
392 | struct list_head head; | |
393 | struct radeon_ib ib; | |
394 | unsigned entries; | |
395 | uint64_t addr; | |
396 | int r; | |
397 | ||
398 | memset(&tv, 0, sizeof(tv)); | |
399 | tv.bo = &bo->tbo; | |
ae9c0af2 | 400 | tv.shared = false; |
6d2f2944 CK |
401 | |
402 | INIT_LIST_HEAD(&head); | |
403 | list_add(&tv.head, &head); | |
404 | ||
58b4d720 | 405 | r = ttm_eu_reserve_buffers(&ticket, &head, true); |
6d2f2944 CK |
406 | if (r) |
407 | return r; | |
408 | ||
409 | r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false); | |
410 | if (r) | |
411 | goto error; | |
412 | ||
413 | addr = radeon_bo_gpu_offset(bo); | |
414 | entries = radeon_bo_size(bo) / 8; | |
415 | ||
cc6f3536 | 416 | r = radeon_ib_get(rdev, R600_RING_TYPE_DMA_INDEX, &ib, NULL, 256); |
6d2f2944 CK |
417 | if (r) |
418 | goto error; | |
419 | ||
420 | ib.length_dw = 0; | |
421 | ||
03f62abd CK |
422 | radeon_vm_set_pages(rdev, &ib, addr, 0, entries, 0, 0); |
423 | radeon_asic_vm_pad_ib(rdev, &ib); | |
cc6f3536 | 424 | WARN_ON(ib.length_dw > 64); |
6d2f2944 | 425 | |
1538a9e0 | 426 | r = radeon_ib_schedule(rdev, &ib, NULL, false); |
6d2f2944 CK |
427 | if (r) |
428 | goto error; | |
429 | ||
f2c24b83 | 430 | ttm_eu_fence_buffer_objects(&ticket, &head, &ib.fence->base); |
6d2f2944 CK |
431 | radeon_ib_free(rdev, &ib); |
432 | ||
433 | return 0; | |
434 | ||
435 | error: | |
436 | ttm_eu_backoff_reservation(&ticket, &head); | |
437 | return r; | |
438 | } | |
439 | ||
2280ab57 CK |
440 | /** |
441 | * radeon_vm_bo_set_addr - set bos virtual address inside a vm | |
442 | * | |
443 | * @rdev: radeon_device pointer | |
444 | * @bo_va: bo_va to store the address | |
445 | * @soffset: requested offset of the buffer in the VM address space | |
446 | * @flags: attributes of pages (read/write/valid/etc.) | |
447 | * | |
448 | * Set offset of @bo_va (cayman+). | |
449 | * Validate and set the offset requested within the vm address space. | |
450 | * Returns 0 for success, error for failure. | |
451 | * | |
452 | * Object has to be reserved! | |
453 | */ | |
454 | int radeon_vm_bo_set_addr(struct radeon_device *rdev, | |
455 | struct radeon_bo_va *bo_va, | |
456 | uint64_t soffset, | |
457 | uint32_t flags) | |
458 | { | |
459 | uint64_t size = radeon_bo_size(bo_va->bo); | |
2280ab57 | 460 | struct radeon_vm *vm = bo_va->vm; |
6d2f2944 | 461 | unsigned last_pfn, pt_idx; |
0aea5e4a | 462 | uint64_t eoffset; |
6d2f2944 | 463 | int r; |
2280ab57 CK |
464 | |
465 | if (soffset) { | |
466 | /* make sure object fit at this offset */ | |
467 | eoffset = soffset + size; | |
468 | if (soffset >= eoffset) { | |
469 | return -EINVAL; | |
470 | } | |
471 | ||
472 | last_pfn = eoffset / RADEON_GPU_PAGE_SIZE; | |
473 | if (last_pfn > rdev->vm_manager.max_pfn) { | |
474 | dev_err(rdev->dev, "va above limit (0x%08X > 0x%08X)\n", | |
475 | last_pfn, rdev->vm_manager.max_pfn); | |
476 | return -EINVAL; | |
477 | } | |
478 | ||
479 | } else { | |
480 | eoffset = last_pfn = 0; | |
481 | } | |
482 | ||
483 | mutex_lock(&vm->mutex); | |
0aea5e4a AD |
484 | if (bo_va->it.start || bo_va->it.last) { |
485 | if (bo_va->addr) { | |
486 | /* add a clone of the bo_va to clear the old address */ | |
487 | struct radeon_bo_va *tmp; | |
488 | tmp = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL); | |
68b1ea30 DC |
489 | if (!tmp) { |
490 | mutex_unlock(&vm->mutex); | |
491 | return -ENOMEM; | |
492 | } | |
0aea5e4a AD |
493 | tmp->it.start = bo_va->it.start; |
494 | tmp->it.last = bo_va->it.last; | |
495 | tmp->vm = vm; | |
496 | tmp->addr = bo_va->addr; | |
ee26d83f | 497 | tmp->bo = radeon_bo_ref(bo_va->bo); |
0aea5e4a | 498 | list_add(&tmp->vm_status, &vm->freed); |
2280ab57 CK |
499 | } |
500 | ||
0aea5e4a AD |
501 | interval_tree_remove(&bo_va->it, &vm->va); |
502 | bo_va->it.start = 0; | |
503 | bo_va->it.last = 0; | |
2280ab57 CK |
504 | } |
505 | ||
0aea5e4a AD |
506 | soffset /= RADEON_GPU_PAGE_SIZE; |
507 | eoffset /= RADEON_GPU_PAGE_SIZE; | |
508 | if (soffset || eoffset) { | |
509 | struct interval_tree_node *it; | |
510 | it = interval_tree_iter_first(&vm->va, soffset, eoffset - 1); | |
511 | if (it) { | |
512 | struct radeon_bo_va *tmp; | |
513 | tmp = container_of(it, struct radeon_bo_va, it); | |
514 | /* bo and tmp overlap, invalid offset */ | |
515 | dev_err(rdev->dev, "bo %p va 0x%010Lx conflict with " | |
516 | "(bo %p 0x%010lx 0x%010lx)\n", bo_va->bo, | |
517 | soffset, tmp->bo, tmp->it.start, tmp->it.last); | |
5b753275 | 518 | mutex_unlock(&vm->mutex); |
0aea5e4a | 519 | return -EINVAL; |
5b753275 | 520 | } |
0aea5e4a AD |
521 | bo_va->it.start = soffset; |
522 | bo_va->it.last = eoffset - 1; | |
523 | interval_tree_insert(&bo_va->it, &vm->va); | |
036bf46a CK |
524 | } |
525 | ||
2280ab57 | 526 | bo_va->flags = flags; |
e31ad969 | 527 | bo_va->addr = 0; |
2280ab57 | 528 | |
0aea5e4a AD |
529 | soffset >>= radeon_vm_block_size; |
530 | eoffset >>= radeon_vm_block_size; | |
4510fb98 CK |
531 | |
532 | BUG_ON(eoffset >= radeon_vm_num_pdes(rdev)); | |
6d2f2944 CK |
533 | |
534 | if (eoffset > vm->max_pde_used) | |
535 | vm->max_pde_used = eoffset; | |
536 | ||
537 | radeon_bo_unreserve(bo_va->bo); | |
538 | ||
539 | /* walk over the address space and allocate the page tables */ | |
540 | for (pt_idx = soffset; pt_idx <= eoffset; ++pt_idx) { | |
541 | struct radeon_bo *pt; | |
542 | ||
543 | if (vm->page_tables[pt_idx].bo) | |
544 | continue; | |
545 | ||
546 | /* drop mutex to allocate and clear page table */ | |
547 | mutex_unlock(&vm->mutex); | |
548 | ||
549 | r = radeon_bo_create(rdev, RADEON_VM_PTE_COUNT * 8, | |
7dae77f8 | 550 | RADEON_GPU_PAGE_SIZE, true, |
831b6966 ML |
551 | RADEON_GEM_DOMAIN_VRAM, 0, |
552 | NULL, NULL, &pt); | |
6d2f2944 CK |
553 | if (r) |
554 | return r; | |
555 | ||
556 | r = radeon_vm_clear_bo(rdev, pt); | |
557 | if (r) { | |
558 | radeon_bo_unref(&pt); | |
559 | radeon_bo_reserve(bo_va->bo, false); | |
560 | return r; | |
561 | } | |
562 | ||
563 | /* aquire mutex again */ | |
564 | mutex_lock(&vm->mutex); | |
565 | if (vm->page_tables[pt_idx].bo) { | |
566 | /* someone else allocated the pt in the meantime */ | |
567 | mutex_unlock(&vm->mutex); | |
568 | radeon_bo_unref(&pt); | |
569 | mutex_lock(&vm->mutex); | |
570 | continue; | |
571 | } | |
572 | ||
573 | vm->page_tables[pt_idx].addr = 0; | |
574 | vm->page_tables[pt_idx].bo = pt; | |
575 | } | |
576 | ||
2280ab57 | 577 | mutex_unlock(&vm->mutex); |
6d2f2944 | 578 | return radeon_bo_reserve(bo_va->bo, false); |
2280ab57 CK |
579 | } |
580 | ||
581 | /** | |
582 | * radeon_vm_map_gart - get the physical address of a gart page | |
583 | * | |
584 | * @rdev: radeon_device pointer | |
585 | * @addr: the unmapped addr | |
586 | * | |
587 | * Look up the physical address of the page that the pte resolves | |
588 | * to (cayman+). | |
589 | * Returns the physical address of the page. | |
590 | */ | |
591 | uint64_t radeon_vm_map_gart(struct radeon_device *rdev, uint64_t addr) | |
592 | { | |
593 | uint64_t result; | |
594 | ||
595 | /* page table offset */ | |
596 | result = rdev->gart.pages_addr[addr >> PAGE_SHIFT]; | |
597 | ||
598 | /* in case cpu page size != gpu page size*/ | |
599 | result |= addr & (~PAGE_MASK); | |
600 | ||
601 | return result; | |
602 | } | |
603 | ||
604 | /** | |
605 | * radeon_vm_page_flags - translate page flags to what the hw uses | |
606 | * | |
607 | * @flags: flags comming from userspace | |
608 | * | |
609 | * Translate the flags the userspace ABI uses to hw flags. | |
610 | */ | |
611 | static uint32_t radeon_vm_page_flags(uint32_t flags) | |
612 | { | |
613 | uint32_t hw_flags = 0; | |
614 | hw_flags |= (flags & RADEON_VM_PAGE_VALID) ? R600_PTE_VALID : 0; | |
615 | hw_flags |= (flags & RADEON_VM_PAGE_READABLE) ? R600_PTE_READABLE : 0; | |
616 | hw_flags |= (flags & RADEON_VM_PAGE_WRITEABLE) ? R600_PTE_WRITEABLE : 0; | |
617 | if (flags & RADEON_VM_PAGE_SYSTEM) { | |
618 | hw_flags |= R600_PTE_SYSTEM; | |
619 | hw_flags |= (flags & RADEON_VM_PAGE_SNOOPED) ? R600_PTE_SNOOPED : 0; | |
620 | } | |
621 | return hw_flags; | |
622 | } | |
623 | ||
624 | /** | |
625 | * radeon_vm_update_pdes - make sure that page directory is valid | |
626 | * | |
627 | * @rdev: radeon_device pointer | |
628 | * @vm: requested vm | |
629 | * @start: start of GPU address range | |
630 | * @end: end of GPU address range | |
631 | * | |
632 | * Allocates new page tables if necessary | |
633 | * and updates the page directory (cayman+). | |
634 | * Returns 0 for success, error for failure. | |
635 | * | |
636 | * Global and local mutex must be locked! | |
637 | */ | |
6d2f2944 CK |
638 | int radeon_vm_update_page_directory(struct radeon_device *rdev, |
639 | struct radeon_vm *vm) | |
2280ab57 | 640 | { |
37903b5e CK |
641 | struct radeon_bo *pd = vm->page_directory; |
642 | uint64_t pd_addr = radeon_bo_gpu_offset(pd); | |
4510fb98 | 643 | uint32_t incr = RADEON_VM_PTE_COUNT * 8; |
2280ab57 | 644 | uint64_t last_pde = ~0, last_pt = ~0; |
6d2f2944 CK |
645 | unsigned count = 0, pt_idx, ndw; |
646 | struct radeon_ib ib; | |
2280ab57 CK |
647 | int r; |
648 | ||
6d2f2944 CK |
649 | /* padding, etc. */ |
650 | ndw = 64; | |
651 | ||
652 | /* assume the worst case */ | |
cc6f3536 | 653 | ndw += vm->max_pde_used * 6; |
6d2f2944 CK |
654 | |
655 | /* update too big for an IB */ | |
656 | if (ndw > 0xfffff) | |
657 | return -ENOMEM; | |
658 | ||
659 | r = radeon_ib_get(rdev, R600_RING_TYPE_DMA_INDEX, &ib, NULL, ndw * 4); | |
660 | if (r) | |
661 | return r; | |
662 | ib.length_dw = 0; | |
2280ab57 CK |
663 | |
664 | /* walk over the address space and update the page directory */ | |
6d2f2944 CK |
665 | for (pt_idx = 0; pt_idx <= vm->max_pde_used; ++pt_idx) { |
666 | struct radeon_bo *bo = vm->page_tables[pt_idx].bo; | |
2280ab57 CK |
667 | uint64_t pde, pt; |
668 | ||
6d2f2944 | 669 | if (bo == NULL) |
2280ab57 CK |
670 | continue; |
671 | ||
6d2f2944 CK |
672 | pt = radeon_bo_gpu_offset(bo); |
673 | if (vm->page_tables[pt_idx].addr == pt) | |
674 | continue; | |
675 | vm->page_tables[pt_idx].addr = pt; | |
2280ab57 | 676 | |
6d2f2944 | 677 | pde = pd_addr + pt_idx * 8; |
2280ab57 CK |
678 | if (((last_pde + 8 * count) != pde) || |
679 | ((last_pt + incr * count) != pt)) { | |
680 | ||
681 | if (count) { | |
03f62abd CK |
682 | radeon_vm_set_pages(rdev, &ib, last_pde, |
683 | last_pt, count, incr, | |
684 | R600_PTE_VALID); | |
2280ab57 CK |
685 | } |
686 | ||
687 | count = 1; | |
688 | last_pde = pde; | |
689 | last_pt = pt; | |
690 | } else { | |
691 | ++count; | |
692 | } | |
693 | } | |
694 | ||
6d2f2944 | 695 | if (count) |
03f62abd CK |
696 | radeon_vm_set_pages(rdev, &ib, last_pde, last_pt, count, |
697 | incr, R600_PTE_VALID); | |
2280ab57 | 698 | |
6d2f2944 | 699 | if (ib.length_dw != 0) { |
03f62abd | 700 | radeon_asic_vm_pad_ib(rdev, &ib); |
f2c24b83 | 701 | |
392a250b | 702 | radeon_semaphore_sync_resv(rdev, ib.semaphore, pd->tbo.resv, false); |
57d20a43 | 703 | radeon_semaphore_sync_fence(ib.semaphore, vm->last_id_use); |
cc6f3536 | 704 | WARN_ON(ib.length_dw > ndw); |
1538a9e0 | 705 | r = radeon_ib_schedule(rdev, &ib, NULL, false); |
6d2f2944 CK |
706 | if (r) { |
707 | radeon_ib_free(rdev, &ib); | |
708 | return r; | |
709 | } | |
710 | radeon_fence_unref(&vm->fence); | |
711 | vm->fence = radeon_fence_ref(ib.fence); | |
712 | radeon_fence_unref(&vm->last_flush); | |
2280ab57 | 713 | } |
6d2f2944 | 714 | radeon_ib_free(rdev, &ib); |
2280ab57 CK |
715 | |
716 | return 0; | |
717 | } | |
718 | ||
ec3dbbcb CK |
719 | /** |
720 | * radeon_vm_frag_ptes - add fragment information to PTEs | |
721 | * | |
722 | * @rdev: radeon_device pointer | |
723 | * @ib: IB for the update | |
724 | * @pe_start: first PTE to handle | |
725 | * @pe_end: last PTE to handle | |
726 | * @addr: addr those PTEs should point to | |
727 | * @flags: hw mapping flags | |
728 | * | |
729 | * Global and local mutex must be locked! | |
730 | */ | |
731 | static void radeon_vm_frag_ptes(struct radeon_device *rdev, | |
732 | struct radeon_ib *ib, | |
733 | uint64_t pe_start, uint64_t pe_end, | |
734 | uint64_t addr, uint32_t flags) | |
735 | { | |
736 | /** | |
737 | * The MC L1 TLB supports variable sized pages, based on a fragment | |
738 | * field in the PTE. When this field is set to a non-zero value, page | |
739 | * granularity is increased from 4KB to (1 << (12 + frag)). The PTE | |
740 | * flags are considered valid for all PTEs within the fragment range | |
741 | * and corresponding mappings are assumed to be physically contiguous. | |
742 | * | |
743 | * The L1 TLB can store a single PTE for the whole fragment, | |
744 | * significantly increasing the space available for translation | |
745 | * caching. This leads to large improvements in throughput when the | |
746 | * TLB is under pressure. | |
747 | * | |
748 | * The L2 TLB distributes small and large fragments into two | |
749 | * asymmetric partitions. The large fragment cache is significantly | |
750 | * larger. Thus, we try to use large fragments wherever possible. | |
751 | * Userspace can support this by aligning virtual base address and | |
752 | * allocation size to the fragment size. | |
753 | */ | |
754 | ||
755 | /* NI is optimized for 256KB fragments, SI and newer for 64KB */ | |
756 | uint64_t frag_flags = rdev->family == CHIP_CAYMAN ? | |
757 | R600_PTE_FRAG_256KB : R600_PTE_FRAG_64KB; | |
758 | uint64_t frag_align = rdev->family == CHIP_CAYMAN ? 0x200 : 0x80; | |
759 | ||
760 | uint64_t frag_start = ALIGN(pe_start, frag_align); | |
761 | uint64_t frag_end = pe_end & ~(frag_align - 1); | |
762 | ||
763 | unsigned count; | |
764 | ||
765 | /* system pages are non continuously */ | |
766 | if ((flags & R600_PTE_SYSTEM) || !(flags & R600_PTE_VALID) || | |
767 | (frag_start >= frag_end)) { | |
768 | ||
769 | count = (pe_end - pe_start) / 8; | |
03f62abd CK |
770 | radeon_vm_set_pages(rdev, ib, pe_start, addr, count, |
771 | RADEON_GPU_PAGE_SIZE, flags); | |
ec3dbbcb CK |
772 | return; |
773 | } | |
774 | ||
775 | /* handle the 4K area at the beginning */ | |
776 | if (pe_start != frag_start) { | |
777 | count = (frag_start - pe_start) / 8; | |
03f62abd CK |
778 | radeon_vm_set_pages(rdev, ib, pe_start, addr, count, |
779 | RADEON_GPU_PAGE_SIZE, flags); | |
ec3dbbcb CK |
780 | addr += RADEON_GPU_PAGE_SIZE * count; |
781 | } | |
782 | ||
783 | /* handle the area in the middle */ | |
784 | count = (frag_end - frag_start) / 8; | |
03f62abd CK |
785 | radeon_vm_set_pages(rdev, ib, frag_start, addr, count, |
786 | RADEON_GPU_PAGE_SIZE, flags | frag_flags); | |
ec3dbbcb CK |
787 | |
788 | /* handle the 4K area at the end */ | |
789 | if (frag_end != pe_end) { | |
790 | addr += RADEON_GPU_PAGE_SIZE * count; | |
791 | count = (pe_end - frag_end) / 8; | |
03f62abd CK |
792 | radeon_vm_set_pages(rdev, ib, frag_end, addr, count, |
793 | RADEON_GPU_PAGE_SIZE, flags); | |
ec3dbbcb CK |
794 | } |
795 | } | |
796 | ||
2280ab57 CK |
797 | /** |
798 | * radeon_vm_update_ptes - make sure that page tables are valid | |
799 | * | |
800 | * @rdev: radeon_device pointer | |
801 | * @vm: requested vm | |
802 | * @start: start of GPU address range | |
803 | * @end: end of GPU address range | |
804 | * @dst: destination address to map to | |
805 | * @flags: mapping flags | |
806 | * | |
807 | * Update the page tables in the range @start - @end (cayman+). | |
808 | * | |
809 | * Global and local mutex must be locked! | |
810 | */ | |
811 | static void radeon_vm_update_ptes(struct radeon_device *rdev, | |
812 | struct radeon_vm *vm, | |
813 | struct radeon_ib *ib, | |
814 | uint64_t start, uint64_t end, | |
815 | uint64_t dst, uint32_t flags) | |
816 | { | |
4510fb98 | 817 | uint64_t mask = RADEON_VM_PTE_COUNT - 1; |
2280ab57 CK |
818 | uint64_t last_pte = ~0, last_dst = ~0; |
819 | unsigned count = 0; | |
820 | uint64_t addr; | |
821 | ||
2280ab57 CK |
822 | /* walk over the address space and update the page tables */ |
823 | for (addr = start; addr < end; ) { | |
4510fb98 | 824 | uint64_t pt_idx = addr >> radeon_vm_block_size; |
37903b5e | 825 | struct radeon_bo *pt = vm->page_tables[pt_idx].bo; |
2280ab57 CK |
826 | unsigned nptes; |
827 | uint64_t pte; | |
828 | ||
392a250b | 829 | radeon_semaphore_sync_resv(rdev, ib->semaphore, pt->tbo.resv, false); |
37903b5e | 830 | |
2280ab57 CK |
831 | if ((addr & ~mask) == (end & ~mask)) |
832 | nptes = end - addr; | |
833 | else | |
834 | nptes = RADEON_VM_PTE_COUNT - (addr & mask); | |
835 | ||
37903b5e | 836 | pte = radeon_bo_gpu_offset(pt); |
2280ab57 CK |
837 | pte += (addr & mask) * 8; |
838 | ||
839 | if ((last_pte + 8 * count) != pte) { | |
840 | ||
841 | if (count) { | |
ec3dbbcb CK |
842 | radeon_vm_frag_ptes(rdev, ib, last_pte, |
843 | last_pte + 8 * count, | |
844 | last_dst, flags); | |
2280ab57 CK |
845 | } |
846 | ||
847 | count = nptes; | |
848 | last_pte = pte; | |
849 | last_dst = dst; | |
850 | } else { | |
851 | count += nptes; | |
852 | } | |
853 | ||
854 | addr += nptes; | |
855 | dst += nptes * RADEON_GPU_PAGE_SIZE; | |
856 | } | |
857 | ||
858 | if (count) { | |
ec3dbbcb CK |
859 | radeon_vm_frag_ptes(rdev, ib, last_pte, |
860 | last_pte + 8 * count, | |
861 | last_dst, flags); | |
2280ab57 CK |
862 | } |
863 | } | |
864 | ||
865 | /** | |
866 | * radeon_vm_bo_update - map a bo into the vm page table | |
867 | * | |
868 | * @rdev: radeon_device pointer | |
869 | * @vm: requested vm | |
870 | * @bo: radeon buffer object | |
871 | * @mem: ttm mem | |
872 | * | |
873 | * Fill in the page table entries for @bo (cayman+). | |
874 | * Returns 0 for success, -EINVAL for failure. | |
875 | * | |
529364e0 | 876 | * Object have to be reserved and mutex must be locked! |
2280ab57 CK |
877 | */ |
878 | int radeon_vm_bo_update(struct radeon_device *rdev, | |
036bf46a | 879 | struct radeon_bo_va *bo_va, |
2280ab57 CK |
880 | struct ttm_mem_reg *mem) |
881 | { | |
036bf46a | 882 | struct radeon_vm *vm = bo_va->vm; |
2280ab57 | 883 | struct radeon_ib ib; |
cc6f3536 | 884 | unsigned nptes, ncmds, ndw; |
2280ab57 | 885 | uint64_t addr; |
cc6f3536 | 886 | uint32_t flags; |
2280ab57 CK |
887 | int r; |
888 | ||
0aea5e4a | 889 | if (!bo_va->it.start) { |
2280ab57 | 890 | dev_err(rdev->dev, "bo %p don't has a mapping in vm %p\n", |
036bf46a | 891 | bo_va->bo, vm); |
2280ab57 CK |
892 | return -EINVAL; |
893 | } | |
894 | ||
e31ad969 | 895 | list_del_init(&bo_va->vm_status); |
2280ab57 CK |
896 | |
897 | bo_va->flags &= ~RADEON_VM_PAGE_VALID; | |
898 | bo_va->flags &= ~RADEON_VM_PAGE_SYSTEM; | |
02376d82 | 899 | bo_va->flags &= ~RADEON_VM_PAGE_SNOOPED; |
f72a113a CK |
900 | if (bo_va->bo && radeon_ttm_tt_is_readonly(bo_va->bo->tbo.ttm)) |
901 | bo_va->flags &= ~RADEON_VM_PAGE_WRITEABLE; | |
902 | ||
2280ab57 CK |
903 | if (mem) { |
904 | addr = mem->start << PAGE_SHIFT; | |
905 | if (mem->mem_type != TTM_PL_SYSTEM) { | |
906 | bo_va->flags |= RADEON_VM_PAGE_VALID; | |
2280ab57 CK |
907 | } |
908 | if (mem->mem_type == TTM_PL_TT) { | |
909 | bo_va->flags |= RADEON_VM_PAGE_SYSTEM; | |
02376d82 MD |
910 | if (!(bo_va->bo->flags & (RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC))) |
911 | bo_va->flags |= RADEON_VM_PAGE_SNOOPED; | |
912 | ||
2280ab57 CK |
913 | } else { |
914 | addr += rdev->vm_manager.vram_base_offset; | |
915 | } | |
916 | } else { | |
917 | addr = 0; | |
2280ab57 CK |
918 | } |
919 | ||
e31ad969 CK |
920 | if (addr == bo_va->addr) |
921 | return 0; | |
922 | bo_va->addr = addr; | |
923 | ||
2280ab57 CK |
924 | trace_radeon_vm_bo_update(bo_va); |
925 | ||
0aea5e4a | 926 | nptes = bo_va->it.last - bo_va->it.start + 1; |
2280ab57 | 927 | |
cc6f3536 CK |
928 | /* reserve space for one command every (1 << BLOCK_SIZE) entries |
929 | or 2k dwords (whatever is smaller) */ | |
930 | ncmds = (nptes >> min(radeon_vm_block_size, 11)) + 1; | |
931 | ||
2280ab57 CK |
932 | /* padding, etc. */ |
933 | ndw = 64; | |
934 | ||
cc6f3536 CK |
935 | flags = radeon_vm_page_flags(bo_va->flags); |
936 | if ((flags & R600_PTE_GART_MASK) == R600_PTE_GART_MASK) { | |
937 | /* only copy commands needed */ | |
938 | ndw += ncmds * 7; | |
939 | ||
940 | } else if (flags & R600_PTE_SYSTEM) { | |
941 | /* header for write data commands */ | |
942 | ndw += ncmds * 4; | |
943 | ||
944 | /* body of write data command */ | |
945 | ndw += nptes * 2; | |
2280ab57 | 946 | |
cc6f3536 CK |
947 | } else { |
948 | /* set page commands needed */ | |
949 | ndw += ncmds * 10; | |
950 | ||
951 | /* two extra commands for begin/end of fragment */ | |
952 | ndw += 2 * 10; | |
953 | } | |
2280ab57 | 954 | |
2280ab57 CK |
955 | /* update too big for an IB */ |
956 | if (ndw > 0xfffff) | |
957 | return -ENOMEM; | |
958 | ||
959 | r = radeon_ib_get(rdev, R600_RING_TYPE_DMA_INDEX, &ib, NULL, ndw * 4); | |
960 | if (r) | |
961 | return r; | |
962 | ib.length_dw = 0; | |
963 | ||
0aea5e4a AD |
964 | radeon_vm_update_ptes(rdev, vm, &ib, bo_va->it.start, |
965 | bo_va->it.last + 1, addr, | |
966 | radeon_vm_page_flags(bo_va->flags)); | |
2280ab57 | 967 | |
03f62abd | 968 | radeon_asic_vm_pad_ib(rdev, &ib); |
cc6f3536 CK |
969 | WARN_ON(ib.length_dw > ndw); |
970 | ||
57d20a43 | 971 | radeon_semaphore_sync_fence(ib.semaphore, vm->fence); |
1538a9e0 | 972 | r = radeon_ib_schedule(rdev, &ib, NULL, false); |
2280ab57 CK |
973 | if (r) { |
974 | radeon_ib_free(rdev, &ib); | |
975 | return r; | |
976 | } | |
977 | radeon_fence_unref(&vm->fence); | |
978 | vm->fence = radeon_fence_ref(ib.fence); | |
979 | radeon_ib_free(rdev, &ib); | |
980 | radeon_fence_unref(&vm->last_flush); | |
981 | ||
982 | return 0; | |
983 | } | |
984 | ||
036bf46a CK |
985 | /** |
986 | * radeon_vm_clear_freed - clear freed BOs in the PT | |
987 | * | |
988 | * @rdev: radeon_device pointer | |
989 | * @vm: requested vm | |
990 | * | |
991 | * Make sure all freed BOs are cleared in the PT. | |
992 | * Returns 0 for success. | |
993 | * | |
994 | * PTs have to be reserved and mutex must be locked! | |
995 | */ | |
996 | int radeon_vm_clear_freed(struct radeon_device *rdev, | |
997 | struct radeon_vm *vm) | |
998 | { | |
999 | struct radeon_bo_va *bo_va, *tmp; | |
1000 | int r; | |
1001 | ||
1002 | list_for_each_entry_safe(bo_va, tmp, &vm->freed, vm_status) { | |
036bf46a | 1003 | r = radeon_vm_bo_update(rdev, bo_va, NULL); |
ee26d83f | 1004 | radeon_bo_unref(&bo_va->bo); |
036bf46a CK |
1005 | kfree(bo_va); |
1006 | if (r) | |
1007 | return r; | |
1008 | } | |
1009 | return 0; | |
1010 | ||
1011 | } | |
1012 | ||
e31ad969 CK |
1013 | /** |
1014 | * radeon_vm_clear_invalids - clear invalidated BOs in the PT | |
1015 | * | |
1016 | * @rdev: radeon_device pointer | |
1017 | * @vm: requested vm | |
1018 | * | |
1019 | * Make sure all invalidated BOs are cleared in the PT. | |
1020 | * Returns 0 for success. | |
1021 | * | |
1022 | * PTs have to be reserved and mutex must be locked! | |
1023 | */ | |
1024 | int radeon_vm_clear_invalids(struct radeon_device *rdev, | |
1025 | struct radeon_vm *vm) | |
1026 | { | |
1027 | struct radeon_bo_va *bo_va, *tmp; | |
1028 | int r; | |
1029 | ||
1030 | list_for_each_entry_safe(bo_va, tmp, &vm->invalidated, vm_status) { | |
1031 | r = radeon_vm_bo_update(rdev, bo_va, NULL); | |
1032 | if (r) | |
1033 | return r; | |
1034 | } | |
1035 | return 0; | |
1036 | } | |
1037 | ||
2280ab57 CK |
1038 | /** |
1039 | * radeon_vm_bo_rmv - remove a bo to a specific vm | |
1040 | * | |
1041 | * @rdev: radeon_device pointer | |
1042 | * @bo_va: requested bo_va | |
1043 | * | |
1044 | * Remove @bo_va->bo from the requested vm (cayman+). | |
2280ab57 CK |
1045 | * |
1046 | * Object have to be reserved! | |
1047 | */ | |
036bf46a CK |
1048 | void radeon_vm_bo_rmv(struct radeon_device *rdev, |
1049 | struct radeon_bo_va *bo_va) | |
2280ab57 | 1050 | { |
036bf46a | 1051 | struct radeon_vm *vm = bo_va->vm; |
2280ab57 | 1052 | |
036bf46a | 1053 | list_del(&bo_va->bo_list); |
529364e0 | 1054 | |
036bf46a | 1055 | mutex_lock(&vm->mutex); |
0aea5e4a | 1056 | interval_tree_remove(&bo_va->it, &vm->va); |
e31ad969 | 1057 | list_del(&bo_va->vm_status); |
2280ab57 | 1058 | |
e31ad969 | 1059 | if (bo_va->addr) { |
ee26d83f | 1060 | bo_va->bo = radeon_bo_ref(bo_va->bo); |
036bf46a CK |
1061 | list_add(&bo_va->vm_status, &vm->freed); |
1062 | } else { | |
1063 | kfree(bo_va); | |
1064 | } | |
1065 | ||
1066 | mutex_unlock(&vm->mutex); | |
2280ab57 CK |
1067 | } |
1068 | ||
1069 | /** | |
1070 | * radeon_vm_bo_invalidate - mark the bo as invalid | |
1071 | * | |
1072 | * @rdev: radeon_device pointer | |
1073 | * @vm: requested vm | |
1074 | * @bo: radeon buffer object | |
1075 | * | |
1076 | * Mark @bo as invalid (cayman+). | |
1077 | */ | |
1078 | void radeon_vm_bo_invalidate(struct radeon_device *rdev, | |
1079 | struct radeon_bo *bo) | |
1080 | { | |
1081 | struct radeon_bo_va *bo_va; | |
1082 | ||
1083 | list_for_each_entry(bo_va, &bo->va, bo_list) { | |
e31ad969 CK |
1084 | if (bo_va->addr) { |
1085 | mutex_lock(&bo_va->vm->mutex); | |
1086 | list_del(&bo_va->vm_status); | |
1087 | list_add(&bo_va->vm_status, &bo_va->vm->invalidated); | |
1088 | mutex_unlock(&bo_va->vm->mutex); | |
1089 | } | |
2280ab57 CK |
1090 | } |
1091 | } | |
1092 | ||
1093 | /** | |
1094 | * radeon_vm_init - initialize a vm instance | |
1095 | * | |
1096 | * @rdev: radeon_device pointer | |
1097 | * @vm: requested vm | |
1098 | * | |
1099 | * Init @vm fields (cayman+). | |
1100 | */ | |
6d2f2944 | 1101 | int radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm) |
2280ab57 | 1102 | { |
1c89d27f CK |
1103 | const unsigned align = min(RADEON_VM_PTB_ALIGN_SIZE, |
1104 | RADEON_VM_PTE_COUNT * 8); | |
6d2f2944 CK |
1105 | unsigned pd_size, pd_entries, pts_size; |
1106 | int r; | |
1107 | ||
2280ab57 | 1108 | vm->id = 0; |
cc9e67e3 | 1109 | vm->ib_bo_va = NULL; |
2280ab57 CK |
1110 | vm->fence = NULL; |
1111 | vm->last_flush = NULL; | |
1112 | vm->last_id_use = NULL; | |
1113 | mutex_init(&vm->mutex); | |
0aea5e4a | 1114 | vm->va = RB_ROOT; |
e31ad969 | 1115 | INIT_LIST_HEAD(&vm->invalidated); |
036bf46a | 1116 | INIT_LIST_HEAD(&vm->freed); |
6d2f2944 CK |
1117 | |
1118 | pd_size = radeon_vm_directory_size(rdev); | |
1119 | pd_entries = radeon_vm_num_pdes(rdev); | |
1120 | ||
1121 | /* allocate page table array */ | |
1122 | pts_size = pd_entries * sizeof(struct radeon_vm_pt); | |
1123 | vm->page_tables = kzalloc(pts_size, GFP_KERNEL); | |
1124 | if (vm->page_tables == NULL) { | |
1125 | DRM_ERROR("Cannot allocate memory for page table array\n"); | |
1126 | return -ENOMEM; | |
1127 | } | |
1128 | ||
7dae77f8 | 1129 | r = radeon_bo_create(rdev, pd_size, align, true, |
02376d82 | 1130 | RADEON_GEM_DOMAIN_VRAM, 0, NULL, |
831b6966 | 1131 | NULL, &vm->page_directory); |
6d2f2944 CK |
1132 | if (r) |
1133 | return r; | |
1134 | ||
1135 | r = radeon_vm_clear_bo(rdev, vm->page_directory); | |
1136 | if (r) { | |
1137 | radeon_bo_unref(&vm->page_directory); | |
1138 | vm->page_directory = NULL; | |
1139 | return r; | |
1140 | } | |
1141 | ||
1142 | return 0; | |
2280ab57 CK |
1143 | } |
1144 | ||
1145 | /** | |
1146 | * radeon_vm_fini - tear down a vm instance | |
1147 | * | |
1148 | * @rdev: radeon_device pointer | |
1149 | * @vm: requested vm | |
1150 | * | |
1151 | * Tear down @vm (cayman+). | |
1152 | * Unbind the VM and remove all bos from the vm bo list | |
1153 | */ | |
1154 | void radeon_vm_fini(struct radeon_device *rdev, struct radeon_vm *vm) | |
1155 | { | |
1156 | struct radeon_bo_va *bo_va, *tmp; | |
6d2f2944 | 1157 | int i, r; |
2280ab57 | 1158 | |
0aea5e4a | 1159 | if (!RB_EMPTY_ROOT(&vm->va)) { |
2280ab57 CK |
1160 | dev_err(rdev->dev, "still active bo inside vm\n"); |
1161 | } | |
0aea5e4a AD |
1162 | rbtree_postorder_for_each_entry_safe(bo_va, tmp, &vm->va, it.rb) { |
1163 | interval_tree_remove(&bo_va->it, &vm->va); | |
2280ab57 CK |
1164 | r = radeon_bo_reserve(bo_va->bo, false); |
1165 | if (!r) { | |
1166 | list_del_init(&bo_va->bo_list); | |
1167 | radeon_bo_unreserve(bo_va->bo); | |
1168 | kfree(bo_va); | |
1169 | } | |
1170 | } | |
ee26d83f CK |
1171 | list_for_each_entry_safe(bo_va, tmp, &vm->freed, vm_status) { |
1172 | radeon_bo_unref(&bo_va->bo); | |
036bf46a | 1173 | kfree(bo_va); |
ee26d83f | 1174 | } |
6d2f2944 CK |
1175 | |
1176 | for (i = 0; i < radeon_vm_num_pdes(rdev); i++) | |
1177 | radeon_bo_unref(&vm->page_tables[i].bo); | |
1178 | kfree(vm->page_tables); | |
1179 | ||
1180 | radeon_bo_unref(&vm->page_directory); | |
1181 | ||
2280ab57 CK |
1182 | radeon_fence_unref(&vm->fence); |
1183 | radeon_fence_unref(&vm->last_flush); | |
1184 | radeon_fence_unref(&vm->last_id_use); | |
6d2f2944 CK |
1185 | |
1186 | mutex_destroy(&vm->mutex); | |
2280ab57 | 1187 | } |