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1/*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sub license, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
15 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
17 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
18 * USE OR OTHER DEALINGS IN THE SOFTWARE.
19 *
20 * The above copyright notice and this permission notice (including the
21 * next paragraph) shall be included in all copies or substantial portions
22 * of the Software.
23 *
24 */
25/*
26 * Authors: Dave Airlie <airlied@redhat.com>
27 */
28#include <drm/drmP.h>
29#include "ast_drv.h"
30#include <ttm/ttm_page_alloc.h>
31
32static inline struct ast_private *
33ast_bdev(struct ttm_bo_device *bd)
34{
35 return container_of(bd, struct ast_private, ttm.bdev);
36}
37
38static int
39ast_ttm_mem_global_init(struct drm_global_reference *ref)
40{
41 return ttm_mem_global_init(ref->object);
42}
43
44static void
45ast_ttm_mem_global_release(struct drm_global_reference *ref)
46{
47 ttm_mem_global_release(ref->object);
48}
49
50static int ast_ttm_global_init(struct ast_private *ast)
51{
52 struct drm_global_reference *global_ref;
53 int r;
54
55 global_ref = &ast->ttm.mem_global_ref;
56 global_ref->global_type = DRM_GLOBAL_TTM_MEM;
57 global_ref->size = sizeof(struct ttm_mem_global);
58 global_ref->init = &ast_ttm_mem_global_init;
59 global_ref->release = &ast_ttm_mem_global_release;
60 r = drm_global_item_ref(global_ref);
61 if (r != 0) {
62 DRM_ERROR("Failed setting up TTM memory accounting "
63 "subsystem.\n");
64 return r;
65 }
66
67 ast->ttm.bo_global_ref.mem_glob =
68 ast->ttm.mem_global_ref.object;
69 global_ref = &ast->ttm.bo_global_ref.ref;
70 global_ref->global_type = DRM_GLOBAL_TTM_BO;
71 global_ref->size = sizeof(struct ttm_bo_global);
72 global_ref->init = &ttm_bo_global_init;
73 global_ref->release = &ttm_bo_global_release;
74 r = drm_global_item_ref(global_ref);
75 if (r != 0) {
76 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
77 drm_global_item_unref(&ast->ttm.mem_global_ref);
78 return r;
79 }
80 return 0;
81}
82
83static void
84ast_ttm_global_release(struct ast_private *ast)
85{
86 if (ast->ttm.mem_global_ref.release == NULL)
87 return;
88
89 drm_global_item_unref(&ast->ttm.bo_global_ref.ref);
90 drm_global_item_unref(&ast->ttm.mem_global_ref);
91 ast->ttm.mem_global_ref.release = NULL;
92}
93
94
95static void ast_bo_ttm_destroy(struct ttm_buffer_object *tbo)
96{
97 struct ast_bo *bo;
98
99 bo = container_of(tbo, struct ast_bo, bo);
100
101 drm_gem_object_release(&bo->gem);
102 kfree(bo);
103}
104
105static bool ast_ttm_bo_is_ast_bo(struct ttm_buffer_object *bo)
106{
107 if (bo->destroy == &ast_bo_ttm_destroy)
108 return true;
109 return false;
110}
111
112static int
113ast_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
114 struct ttm_mem_type_manager *man)
115{
116 switch (type) {
117 case TTM_PL_SYSTEM:
118 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
119 man->available_caching = TTM_PL_MASK_CACHING;
120 man->default_caching = TTM_PL_FLAG_CACHED;
121 break;
122 case TTM_PL_VRAM:
123 man->func = &ttm_bo_manager_func;
124 man->flags = TTM_MEMTYPE_FLAG_FIXED |
125 TTM_MEMTYPE_FLAG_MAPPABLE;
126 man->available_caching = TTM_PL_FLAG_UNCACHED |
127 TTM_PL_FLAG_WC;
128 man->default_caching = TTM_PL_FLAG_WC;
129 break;
130 default:
131 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
132 return -EINVAL;
133 }
134 return 0;
135}
136
137static void
138ast_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
139{
140 struct ast_bo *astbo = ast_bo(bo);
141
142 if (!ast_ttm_bo_is_ast_bo(bo))
143 return;
144
145 ast_ttm_placement(astbo, TTM_PL_FLAG_SYSTEM);
146 *pl = astbo->placement;
147}
148
149static int ast_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
150{
151 struct ast_bo *astbo = ast_bo(bo);
152
153 return drm_vma_node_verify_access(&astbo->gem.vma_node, filp);
154}
155
156static int ast_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
157 struct ttm_mem_reg *mem)
158{
159 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
160 struct ast_private *ast = ast_bdev(bdev);
161
162 mem->bus.addr = NULL;
163 mem->bus.offset = 0;
164 mem->bus.size = mem->num_pages << PAGE_SHIFT;
165 mem->bus.base = 0;
166 mem->bus.is_iomem = false;
167 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
168 return -EINVAL;
169 switch (mem->mem_type) {
170 case TTM_PL_SYSTEM:
171 /* system memory */
172 return 0;
173 case TTM_PL_VRAM:
174 mem->bus.offset = mem->start << PAGE_SHIFT;
175 mem->bus.base = pci_resource_start(ast->dev->pdev, 0);
176 mem->bus.is_iomem = true;
177 break;
178 default:
179 return -EINVAL;
180 break;
181 }
182 return 0;
183}
184
185static void ast_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
186{
187}
188
189static int ast_bo_move(struct ttm_buffer_object *bo,
190 bool evict, bool interruptible,
191 bool no_wait_gpu,
192 struct ttm_mem_reg *new_mem)
193{
194 int r;
195 r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
196 return r;
197}
198
199
200static void ast_ttm_backend_destroy(struct ttm_tt *tt)
201{
202 ttm_tt_fini(tt);
203 kfree(tt);
204}
205
206static struct ttm_backend_func ast_tt_backend_func = {
207 .destroy = &ast_ttm_backend_destroy,
208};
209
210
211static struct ttm_tt *ast_ttm_tt_create(struct ttm_bo_device *bdev,
212 unsigned long size, uint32_t page_flags,
213 struct page *dummy_read_page)
214{
215 struct ttm_tt *tt;
216
217 tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
218 if (tt == NULL)
219 return NULL;
220 tt->func = &ast_tt_backend_func;
221 if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
222 kfree(tt);
223 return NULL;
224 }
225 return tt;
226}
227
228static int ast_ttm_tt_populate(struct ttm_tt *ttm)
229{
230 return ttm_pool_populate(ttm);
231}
232
233static void ast_ttm_tt_unpopulate(struct ttm_tt *ttm)
234{
235 ttm_pool_unpopulate(ttm);
236}
237
238struct ttm_bo_driver ast_bo_driver = {
239 .ttm_tt_create = ast_ttm_tt_create,
240 .ttm_tt_populate = ast_ttm_tt_populate,
241 .ttm_tt_unpopulate = ast_ttm_tt_unpopulate,
242 .init_mem_type = ast_bo_init_mem_type,
243 .evict_flags = ast_bo_evict_flags,
244 .move = ast_bo_move,
245 .verify_access = ast_bo_verify_access,
246 .io_mem_reserve = &ast_ttm_io_mem_reserve,
247 .io_mem_free = &ast_ttm_io_mem_free,
248};
249
250int ast_mm_init(struct ast_private *ast)
251{
252 int ret;
253 struct drm_device *dev = ast->dev;
254 struct ttm_bo_device *bdev = &ast->ttm.bdev;
255
256 ret = ast_ttm_global_init(ast);
257 if (ret)
258 return ret;
259
260 ret = ttm_bo_device_init(&ast->ttm.bdev,
261 ast->ttm.bo_global_ref.ref.object,
262 &ast_bo_driver,
263 dev->anon_inode->i_mapping,
264 DRM_FILE_PAGE_OFFSET,
265 true);
266 if (ret) {
267 DRM_ERROR("Error initialising bo driver; %d\n", ret);
268 return ret;
269 }
270
271 ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
272 ast->vram_size >> PAGE_SHIFT);
273 if (ret) {
274 DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
275 return ret;
276 }
277
278 ast->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
279 pci_resource_len(dev->pdev, 0));
280
281 return 0;
282}
283
284void ast_mm_fini(struct ast_private *ast)
285{
286 ttm_bo_device_release(&ast->ttm.bdev);
287
288 ast_ttm_global_release(ast);
289
290 arch_phys_wc_del(ast->fb_mtrr);
291}
292
293void ast_ttm_placement(struct ast_bo *bo, int domain)
294{
295 u32 c = 0;
296 unsigned i;
297
298 bo->placement.placement = bo->placements;
299 bo->placement.busy_placement = bo->placements;
300 if (domain & TTM_PL_FLAG_VRAM)
301 bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM;
302 if (domain & TTM_PL_FLAG_SYSTEM)
303 bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
304 if (!c)
305 bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
306 bo->placement.num_placement = c;
307 bo->placement.num_busy_placement = c;
308 for (i = 0; i < c; ++i) {
309 bo->placements[i].fpfn = 0;
310 bo->placements[i].lpfn = 0;
311 }
312}
313
314int ast_bo_create(struct drm_device *dev, int size, int align,
315 uint32_t flags, struct ast_bo **pastbo)
316{
317 struct ast_private *ast = dev->dev_private;
318 struct ast_bo *astbo;
319 size_t acc_size;
320 int ret;
321
322 astbo = kzalloc(sizeof(struct ast_bo), GFP_KERNEL);
323 if (!astbo)
324 return -ENOMEM;
325
326 ret = drm_gem_object_init(dev, &astbo->gem, size);
327 if (ret) {
328 kfree(astbo);
329 return ret;
330 }
331
332 astbo->bo.bdev = &ast->ttm.bdev;
333
334 ast_ttm_placement(astbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
335
336 acc_size = ttm_bo_dma_acc_size(&ast->ttm.bdev, size,
337 sizeof(struct ast_bo));
338
339 ret = ttm_bo_init(&ast->ttm.bdev, &astbo->bo, size,
340 ttm_bo_type_device, &astbo->placement,
341 align >> PAGE_SHIFT, false, NULL, acc_size,
342 NULL, NULL, ast_bo_ttm_destroy);
343 if (ret)
344 return ret;
345
346 *pastbo = astbo;
347 return 0;
348}
349
350static inline u64 ast_bo_gpu_offset(struct ast_bo *bo)
351{
352 return bo->bo.offset;
353}
354
355int ast_bo_pin(struct ast_bo *bo, u32 pl_flag, u64 *gpu_addr)
356{
357 int i, ret;
358
359 if (bo->pin_count) {
360 bo->pin_count++;
361 if (gpu_addr)
362 *gpu_addr = ast_bo_gpu_offset(bo);
363 }
364
365 ast_ttm_placement(bo, pl_flag);
366 for (i = 0; i < bo->placement.num_placement; i++)
367 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
368 ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
369 if (ret)
370 return ret;
371
372 bo->pin_count = 1;
373 if (gpu_addr)
374 *gpu_addr = ast_bo_gpu_offset(bo);
375 return 0;
376}
377
378int ast_bo_unpin(struct ast_bo *bo)
379{
380 int i, ret;
381 if (!bo->pin_count) {
382 DRM_ERROR("unpin bad %p\n", bo);
383 return 0;
384 }
385 bo->pin_count--;
386 if (bo->pin_count)
387 return 0;
388
389 for (i = 0; i < bo->placement.num_placement ; i++)
390 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
391 ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
392 if (ret)
393 return ret;
394
395 return 0;
396}
397
398int ast_bo_push_sysram(struct ast_bo *bo)
399{
400 int i, ret;
401 if (!bo->pin_count) {
402 DRM_ERROR("unpin bad %p\n", bo);
403 return 0;
404 }
405 bo->pin_count--;
406 if (bo->pin_count)
407 return 0;
408
409 if (bo->kmap.virtual)
410 ttm_bo_kunmap(&bo->kmap);
411
412 ast_ttm_placement(bo, TTM_PL_FLAG_SYSTEM);
413 for (i = 0; i < bo->placement.num_placement ; i++)
414 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
415
416 ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
417 if (ret) {
418 DRM_ERROR("pushing to VRAM failed\n");
419 return ret;
420 }
421 return 0;
422}
423
424int ast_mmap(struct file *filp, struct vm_area_struct *vma)
425{
426 struct drm_file *file_priv;
427 struct ast_private *ast;
428
429 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
430 return -EINVAL;
431
432 file_priv = filp->private_data;
433 ast = file_priv->minor->dev->dev_private;
434 return ttm_bo_mmap(filp, vma, &ast->ttm.bdev);
435}
1/*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sub license, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
15 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
17 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
18 * USE OR OTHER DEALINGS IN THE SOFTWARE.
19 *
20 * The above copyright notice and this permission notice (including the
21 * next paragraph) shall be included in all copies or substantial portions
22 * of the Software.
23 *
24 */
25/*
26 * Authors: Dave Airlie <airlied@redhat.com>
27 */
28#include <drm/drmP.h>
29#include <drm/ttm/ttm_page_alloc.h>
30
31#include "ast_drv.h"
32
33static inline struct ast_private *
34ast_bdev(struct ttm_bo_device *bd)
35{
36 return container_of(bd, struct ast_private, ttm.bdev);
37}
38
39static int
40ast_ttm_mem_global_init(struct drm_global_reference *ref)
41{
42 return ttm_mem_global_init(ref->object);
43}
44
45static void
46ast_ttm_mem_global_release(struct drm_global_reference *ref)
47{
48 ttm_mem_global_release(ref->object);
49}
50
51static int ast_ttm_global_init(struct ast_private *ast)
52{
53 struct drm_global_reference *global_ref;
54 int r;
55
56 global_ref = &ast->ttm.mem_global_ref;
57 global_ref->global_type = DRM_GLOBAL_TTM_MEM;
58 global_ref->size = sizeof(struct ttm_mem_global);
59 global_ref->init = &ast_ttm_mem_global_init;
60 global_ref->release = &ast_ttm_mem_global_release;
61 r = drm_global_item_ref(global_ref);
62 if (r != 0) {
63 DRM_ERROR("Failed setting up TTM memory accounting "
64 "subsystem.\n");
65 return r;
66 }
67
68 ast->ttm.bo_global_ref.mem_glob =
69 ast->ttm.mem_global_ref.object;
70 global_ref = &ast->ttm.bo_global_ref.ref;
71 global_ref->global_type = DRM_GLOBAL_TTM_BO;
72 global_ref->size = sizeof(struct ttm_bo_global);
73 global_ref->init = &ttm_bo_global_init;
74 global_ref->release = &ttm_bo_global_release;
75 r = drm_global_item_ref(global_ref);
76 if (r != 0) {
77 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
78 drm_global_item_unref(&ast->ttm.mem_global_ref);
79 return r;
80 }
81 return 0;
82}
83
84static void
85ast_ttm_global_release(struct ast_private *ast)
86{
87 if (ast->ttm.mem_global_ref.release == NULL)
88 return;
89
90 drm_global_item_unref(&ast->ttm.bo_global_ref.ref);
91 drm_global_item_unref(&ast->ttm.mem_global_ref);
92 ast->ttm.mem_global_ref.release = NULL;
93}
94
95
96static void ast_bo_ttm_destroy(struct ttm_buffer_object *tbo)
97{
98 struct ast_bo *bo;
99
100 bo = container_of(tbo, struct ast_bo, bo);
101
102 drm_gem_object_release(&bo->gem);
103 kfree(bo);
104}
105
106static bool ast_ttm_bo_is_ast_bo(struct ttm_buffer_object *bo)
107{
108 if (bo->destroy == &ast_bo_ttm_destroy)
109 return true;
110 return false;
111}
112
113static int
114ast_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
115 struct ttm_mem_type_manager *man)
116{
117 switch (type) {
118 case TTM_PL_SYSTEM:
119 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
120 man->available_caching = TTM_PL_MASK_CACHING;
121 man->default_caching = TTM_PL_FLAG_CACHED;
122 break;
123 case TTM_PL_VRAM:
124 man->func = &ttm_bo_manager_func;
125 man->flags = TTM_MEMTYPE_FLAG_FIXED |
126 TTM_MEMTYPE_FLAG_MAPPABLE;
127 man->available_caching = TTM_PL_FLAG_UNCACHED |
128 TTM_PL_FLAG_WC;
129 man->default_caching = TTM_PL_FLAG_WC;
130 break;
131 default:
132 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
133 return -EINVAL;
134 }
135 return 0;
136}
137
138static void
139ast_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
140{
141 struct ast_bo *astbo = ast_bo(bo);
142
143 if (!ast_ttm_bo_is_ast_bo(bo))
144 return;
145
146 ast_ttm_placement(astbo, TTM_PL_FLAG_SYSTEM);
147 *pl = astbo->placement;
148}
149
150static int ast_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
151{
152 struct ast_bo *astbo = ast_bo(bo);
153
154 return drm_vma_node_verify_access(&astbo->gem.vma_node,
155 filp->private_data);
156}
157
158static int ast_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
159 struct ttm_mem_reg *mem)
160{
161 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
162 struct ast_private *ast = ast_bdev(bdev);
163
164 mem->bus.addr = NULL;
165 mem->bus.offset = 0;
166 mem->bus.size = mem->num_pages << PAGE_SHIFT;
167 mem->bus.base = 0;
168 mem->bus.is_iomem = false;
169 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
170 return -EINVAL;
171 switch (mem->mem_type) {
172 case TTM_PL_SYSTEM:
173 /* system memory */
174 return 0;
175 case TTM_PL_VRAM:
176 mem->bus.offset = mem->start << PAGE_SHIFT;
177 mem->bus.base = pci_resource_start(ast->dev->pdev, 0);
178 mem->bus.is_iomem = true;
179 break;
180 default:
181 return -EINVAL;
182 break;
183 }
184 return 0;
185}
186
187static void ast_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
188{
189}
190
191static void ast_ttm_backend_destroy(struct ttm_tt *tt)
192{
193 ttm_tt_fini(tt);
194 kfree(tt);
195}
196
197static struct ttm_backend_func ast_tt_backend_func = {
198 .destroy = &ast_ttm_backend_destroy,
199};
200
201
202static struct ttm_tt *ast_ttm_tt_create(struct ttm_buffer_object *bo,
203 uint32_t page_flags)
204{
205 struct ttm_tt *tt;
206
207 tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
208 if (tt == NULL)
209 return NULL;
210 tt->func = &ast_tt_backend_func;
211 if (ttm_tt_init(tt, bo, page_flags)) {
212 kfree(tt);
213 return NULL;
214 }
215 return tt;
216}
217
218struct ttm_bo_driver ast_bo_driver = {
219 .ttm_tt_create = ast_ttm_tt_create,
220 .init_mem_type = ast_bo_init_mem_type,
221 .eviction_valuable = ttm_bo_eviction_valuable,
222 .evict_flags = ast_bo_evict_flags,
223 .move = NULL,
224 .verify_access = ast_bo_verify_access,
225 .io_mem_reserve = &ast_ttm_io_mem_reserve,
226 .io_mem_free = &ast_ttm_io_mem_free,
227};
228
229int ast_mm_init(struct ast_private *ast)
230{
231 int ret;
232 struct drm_device *dev = ast->dev;
233 struct ttm_bo_device *bdev = &ast->ttm.bdev;
234
235 ret = ast_ttm_global_init(ast);
236 if (ret)
237 return ret;
238
239 ret = ttm_bo_device_init(&ast->ttm.bdev,
240 ast->ttm.bo_global_ref.ref.object,
241 &ast_bo_driver,
242 dev->anon_inode->i_mapping,
243 DRM_FILE_PAGE_OFFSET,
244 true);
245 if (ret) {
246 DRM_ERROR("Error initialising bo driver; %d\n", ret);
247 return ret;
248 }
249
250 ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
251 ast->vram_size >> PAGE_SHIFT);
252 if (ret) {
253 DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
254 return ret;
255 }
256
257 arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
258 pci_resource_len(dev->pdev, 0));
259 ast->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
260 pci_resource_len(dev->pdev, 0));
261
262 return 0;
263}
264
265void ast_mm_fini(struct ast_private *ast)
266{
267 struct drm_device *dev = ast->dev;
268
269 ttm_bo_device_release(&ast->ttm.bdev);
270
271 ast_ttm_global_release(ast);
272
273 arch_phys_wc_del(ast->fb_mtrr);
274 arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
275 pci_resource_len(dev->pdev, 0));
276}
277
278void ast_ttm_placement(struct ast_bo *bo, int domain)
279{
280 u32 c = 0;
281 unsigned i;
282
283 bo->placement.placement = bo->placements;
284 bo->placement.busy_placement = bo->placements;
285 if (domain & TTM_PL_FLAG_VRAM)
286 bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM;
287 if (domain & TTM_PL_FLAG_SYSTEM)
288 bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
289 if (!c)
290 bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
291 bo->placement.num_placement = c;
292 bo->placement.num_busy_placement = c;
293 for (i = 0; i < c; ++i) {
294 bo->placements[i].fpfn = 0;
295 bo->placements[i].lpfn = 0;
296 }
297}
298
299int ast_bo_create(struct drm_device *dev, int size, int align,
300 uint32_t flags, struct ast_bo **pastbo)
301{
302 struct ast_private *ast = dev->dev_private;
303 struct ast_bo *astbo;
304 size_t acc_size;
305 int ret;
306
307 astbo = kzalloc(sizeof(struct ast_bo), GFP_KERNEL);
308 if (!astbo)
309 return -ENOMEM;
310
311 ret = drm_gem_object_init(dev, &astbo->gem, size);
312 if (ret)
313 goto error;
314
315 astbo->bo.bdev = &ast->ttm.bdev;
316
317 ast_ttm_placement(astbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
318
319 acc_size = ttm_bo_dma_acc_size(&ast->ttm.bdev, size,
320 sizeof(struct ast_bo));
321
322 ret = ttm_bo_init(&ast->ttm.bdev, &astbo->bo, size,
323 ttm_bo_type_device, &astbo->placement,
324 align >> PAGE_SHIFT, false, acc_size,
325 NULL, NULL, ast_bo_ttm_destroy);
326 if (ret)
327 goto error;
328
329 *pastbo = astbo;
330 return 0;
331error:
332 kfree(astbo);
333 return ret;
334}
335
336static inline u64 ast_bo_gpu_offset(struct ast_bo *bo)
337{
338 return bo->bo.offset;
339}
340
341int ast_bo_pin(struct ast_bo *bo, u32 pl_flag, u64 *gpu_addr)
342{
343 struct ttm_operation_ctx ctx = { false, false };
344 int i, ret;
345
346 if (bo->pin_count) {
347 bo->pin_count++;
348 if (gpu_addr)
349 *gpu_addr = ast_bo_gpu_offset(bo);
350 }
351
352 ast_ttm_placement(bo, pl_flag);
353 for (i = 0; i < bo->placement.num_placement; i++)
354 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
355 ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
356 if (ret)
357 return ret;
358
359 bo->pin_count = 1;
360 if (gpu_addr)
361 *gpu_addr = ast_bo_gpu_offset(bo);
362 return 0;
363}
364
365int ast_bo_unpin(struct ast_bo *bo)
366{
367 struct ttm_operation_ctx ctx = { false, false };
368 int i;
369 if (!bo->pin_count) {
370 DRM_ERROR("unpin bad %p\n", bo);
371 return 0;
372 }
373 bo->pin_count--;
374 if (bo->pin_count)
375 return 0;
376
377 for (i = 0; i < bo->placement.num_placement ; i++)
378 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
379 return ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
380}
381
382int ast_bo_push_sysram(struct ast_bo *bo)
383{
384 struct ttm_operation_ctx ctx = { false, false };
385 int i, ret;
386 if (!bo->pin_count) {
387 DRM_ERROR("unpin bad %p\n", bo);
388 return 0;
389 }
390 bo->pin_count--;
391 if (bo->pin_count)
392 return 0;
393
394 if (bo->kmap.virtual)
395 ttm_bo_kunmap(&bo->kmap);
396
397 ast_ttm_placement(bo, TTM_PL_FLAG_SYSTEM);
398 for (i = 0; i < bo->placement.num_placement ; i++)
399 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
400
401 ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
402 if (ret) {
403 DRM_ERROR("pushing to VRAM failed\n");
404 return ret;
405 }
406 return 0;
407}
408
409int ast_mmap(struct file *filp, struct vm_area_struct *vma)
410{
411 struct drm_file *file_priv;
412 struct ast_private *ast;
413
414 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
415 return -EINVAL;
416
417 file_priv = filp->private_data;
418 ast = file_priv->minor->dev->dev_private;
419 return ttm_bo_mmap(filp, vma, &ast->ttm.bdev);
420}