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1/*
2 * Copyright 2013 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 "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Dave Airlie
23 * Alon Levy
24 */
25
26#include <ttm/ttm_bo_api.h>
27#include <ttm/ttm_bo_driver.h>
28#include <ttm/ttm_placement.h>
29#include <ttm/ttm_page_alloc.h>
30#include <ttm/ttm_module.h>
31#include <drm/drmP.h>
32#include <drm/drm.h>
33#include <drm/qxl_drm.h>
34#include "qxl_drv.h"
35#include "qxl_object.h"
36
37#include <linux/delay.h>
38static int qxl_ttm_debugfs_init(struct qxl_device *qdev);
39
40static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
41{
42 struct qxl_mman *mman;
43 struct qxl_device *qdev;
44
45 mman = container_of(bdev, struct qxl_mman, bdev);
46 qdev = container_of(mman, struct qxl_device, mman);
47 return qdev;
48}
49
50static int qxl_ttm_mem_global_init(struct drm_global_reference *ref)
51{
52 return ttm_mem_global_init(ref->object);
53}
54
55static void qxl_ttm_mem_global_release(struct drm_global_reference *ref)
56{
57 ttm_mem_global_release(ref->object);
58}
59
60static int qxl_ttm_global_init(struct qxl_device *qdev)
61{
62 struct drm_global_reference *global_ref;
63 int r;
64
65 qdev->mman.mem_global_referenced = false;
66 global_ref = &qdev->mman.mem_global_ref;
67 global_ref->global_type = DRM_GLOBAL_TTM_MEM;
68 global_ref->size = sizeof(struct ttm_mem_global);
69 global_ref->init = &qxl_ttm_mem_global_init;
70 global_ref->release = &qxl_ttm_mem_global_release;
71
72 r = drm_global_item_ref(global_ref);
73 if (r != 0) {
74 DRM_ERROR("Failed setting up TTM memory accounting "
75 "subsystem.\n");
76 return r;
77 }
78
79 qdev->mman.bo_global_ref.mem_glob =
80 qdev->mman.mem_global_ref.object;
81 global_ref = &qdev->mman.bo_global_ref.ref;
82 global_ref->global_type = DRM_GLOBAL_TTM_BO;
83 global_ref->size = sizeof(struct ttm_bo_global);
84 global_ref->init = &ttm_bo_global_init;
85 global_ref->release = &ttm_bo_global_release;
86 r = drm_global_item_ref(global_ref);
87 if (r != 0) {
88 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
89 drm_global_item_unref(&qdev->mman.mem_global_ref);
90 return r;
91 }
92
93 qdev->mman.mem_global_referenced = true;
94 return 0;
95}
96
97static void qxl_ttm_global_fini(struct qxl_device *qdev)
98{
99 if (qdev->mman.mem_global_referenced) {
100 drm_global_item_unref(&qdev->mman.bo_global_ref.ref);
101 drm_global_item_unref(&qdev->mman.mem_global_ref);
102 qdev->mman.mem_global_referenced = false;
103 }
104}
105
106static struct vm_operations_struct qxl_ttm_vm_ops;
107static const struct vm_operations_struct *ttm_vm_ops;
108
109static int qxl_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
110{
111 struct ttm_buffer_object *bo;
112 int r;
113
114 bo = (struct ttm_buffer_object *)vma->vm_private_data;
115 if (bo == NULL)
116 return VM_FAULT_NOPAGE;
117 r = ttm_vm_ops->fault(vma, vmf);
118 return r;
119}
120
121int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
122{
123 struct drm_file *file_priv;
124 struct qxl_device *qdev;
125 int r;
126
127 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
128 pr_info("%s: vma->vm_pgoff (%ld) < DRM_FILE_PAGE_OFFSET\n",
129 __func__, vma->vm_pgoff);
130 return -EINVAL;
131 }
132
133 file_priv = filp->private_data;
134 qdev = file_priv->minor->dev->dev_private;
135 if (qdev == NULL) {
136 DRM_ERROR(
137 "filp->private_data->minor->dev->dev_private == NULL\n");
138 return -EINVAL;
139 }
140 QXL_INFO(qdev, "%s: filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
141 __func__, filp->private_data, vma->vm_pgoff);
142
143 r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
144 if (unlikely(r != 0))
145 return r;
146 if (unlikely(ttm_vm_ops == NULL)) {
147 ttm_vm_ops = vma->vm_ops;
148 qxl_ttm_vm_ops = *ttm_vm_ops;
149 qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
150 }
151 vma->vm_ops = &qxl_ttm_vm_ops;
152 return 0;
153}
154
155static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
156{
157 return 0;
158}
159
160static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
161 struct ttm_mem_type_manager *man)
162{
163 switch (type) {
164 case TTM_PL_SYSTEM:
165 /* System memory */
166 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
167 man->available_caching = TTM_PL_MASK_CACHING;
168 man->default_caching = TTM_PL_FLAG_CACHED;
169 break;
170 case TTM_PL_VRAM:
171 case TTM_PL_PRIV0:
172 /* "On-card" video ram */
173 man->func = &ttm_bo_manager_func;
174 man->gpu_offset = 0;
175 man->flags = TTM_MEMTYPE_FLAG_FIXED |
176 TTM_MEMTYPE_FLAG_MAPPABLE;
177 man->available_caching = TTM_PL_MASK_CACHING;
178 man->default_caching = TTM_PL_FLAG_CACHED;
179 break;
180 default:
181 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
182 return -EINVAL;
183 }
184 return 0;
185}
186
187static void qxl_evict_flags(struct ttm_buffer_object *bo,
188 struct ttm_placement *placement)
189{
190 struct qxl_bo *qbo;
191 static struct ttm_place placements = {
192 .fpfn = 0,
193 .lpfn = 0,
194 .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
195 };
196
197 if (!qxl_ttm_bo_is_qxl_bo(bo)) {
198 placement->placement = &placements;
199 placement->busy_placement = &placements;
200 placement->num_placement = 1;
201 placement->num_busy_placement = 1;
202 return;
203 }
204 qbo = to_qxl_bo(bo);
205 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
206 *placement = qbo->placement;
207}
208
209static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
210{
211 struct qxl_bo *qbo = to_qxl_bo(bo);
212
213 return drm_vma_node_verify_access(&qbo->gem_base.vma_node, filp);
214}
215
216static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
217 struct ttm_mem_reg *mem)
218{
219 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
220 struct qxl_device *qdev = qxl_get_qdev(bdev);
221
222 mem->bus.addr = NULL;
223 mem->bus.offset = 0;
224 mem->bus.size = mem->num_pages << PAGE_SHIFT;
225 mem->bus.base = 0;
226 mem->bus.is_iomem = false;
227 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
228 return -EINVAL;
229 switch (mem->mem_type) {
230 case TTM_PL_SYSTEM:
231 /* system memory */
232 return 0;
233 case TTM_PL_VRAM:
234 mem->bus.is_iomem = true;
235 mem->bus.base = qdev->vram_base;
236 mem->bus.offset = mem->start << PAGE_SHIFT;
237 break;
238 case TTM_PL_PRIV0:
239 mem->bus.is_iomem = true;
240 mem->bus.base = qdev->surfaceram_base;
241 mem->bus.offset = mem->start << PAGE_SHIFT;
242 break;
243 default:
244 return -EINVAL;
245 }
246 return 0;
247}
248
249static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
250 struct ttm_mem_reg *mem)
251{
252}
253
254/*
255 * TTM backend functions.
256 */
257struct qxl_ttm_tt {
258 struct ttm_dma_tt ttm;
259 struct qxl_device *qdev;
260 u64 offset;
261};
262
263static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
264 struct ttm_mem_reg *bo_mem)
265{
266 struct qxl_ttm_tt *gtt = (void *)ttm;
267
268 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
269 if (!ttm->num_pages) {
270 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
271 ttm->num_pages, bo_mem, ttm);
272 }
273 /* Not implemented */
274 return -1;
275}
276
277static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
278{
279 /* Not implemented */
280 return -1;
281}
282
283static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
284{
285 struct qxl_ttm_tt *gtt = (void *)ttm;
286
287 ttm_dma_tt_fini(>t->ttm);
288 kfree(gtt);
289}
290
291static struct ttm_backend_func qxl_backend_func = {
292 .bind = &qxl_ttm_backend_bind,
293 .unbind = &qxl_ttm_backend_unbind,
294 .destroy = &qxl_ttm_backend_destroy,
295};
296
297static int qxl_ttm_tt_populate(struct ttm_tt *ttm)
298{
299 int r;
300
301 if (ttm->state != tt_unpopulated)
302 return 0;
303
304 r = ttm_pool_populate(ttm);
305 if (r)
306 return r;
307
308 return 0;
309}
310
311static void qxl_ttm_tt_unpopulate(struct ttm_tt *ttm)
312{
313 ttm_pool_unpopulate(ttm);
314}
315
316static struct ttm_tt *qxl_ttm_tt_create(struct ttm_bo_device *bdev,
317 unsigned long size, uint32_t page_flags,
318 struct page *dummy_read_page)
319{
320 struct qxl_device *qdev;
321 struct qxl_ttm_tt *gtt;
322
323 qdev = qxl_get_qdev(bdev);
324 gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
325 if (gtt == NULL)
326 return NULL;
327 gtt->ttm.ttm.func = &qxl_backend_func;
328 gtt->qdev = qdev;
329 if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags,
330 dummy_read_page)) {
331 kfree(gtt);
332 return NULL;
333 }
334 return >t->ttm.ttm;
335}
336
337static void qxl_move_null(struct ttm_buffer_object *bo,
338 struct ttm_mem_reg *new_mem)
339{
340 struct ttm_mem_reg *old_mem = &bo->mem;
341
342 BUG_ON(old_mem->mm_node != NULL);
343 *old_mem = *new_mem;
344 new_mem->mm_node = NULL;
345}
346
347static int qxl_bo_move(struct ttm_buffer_object *bo,
348 bool evict, bool interruptible,
349 bool no_wait_gpu,
350 struct ttm_mem_reg *new_mem)
351{
352 struct ttm_mem_reg *old_mem = &bo->mem;
353 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
354 qxl_move_null(bo, new_mem);
355 return 0;
356 }
357 return ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
358}
359
360static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
361 struct ttm_mem_reg *new_mem)
362{
363 struct qxl_bo *qbo;
364 struct qxl_device *qdev;
365
366 if (!qxl_ttm_bo_is_qxl_bo(bo))
367 return;
368 qbo = to_qxl_bo(bo);
369 qdev = qbo->gem_base.dev->dev_private;
370
371 if (bo->mem.mem_type == TTM_PL_PRIV0 && qbo->surface_id)
372 qxl_surface_evict(qdev, qbo, new_mem ? true : false);
373}
374
375static struct ttm_bo_driver qxl_bo_driver = {
376 .ttm_tt_create = &qxl_ttm_tt_create,
377 .ttm_tt_populate = &qxl_ttm_tt_populate,
378 .ttm_tt_unpopulate = &qxl_ttm_tt_unpopulate,
379 .invalidate_caches = &qxl_invalidate_caches,
380 .init_mem_type = &qxl_init_mem_type,
381 .evict_flags = &qxl_evict_flags,
382 .move = &qxl_bo_move,
383 .verify_access = &qxl_verify_access,
384 .io_mem_reserve = &qxl_ttm_io_mem_reserve,
385 .io_mem_free = &qxl_ttm_io_mem_free,
386 .move_notify = &qxl_bo_move_notify,
387};
388
389int qxl_ttm_init(struct qxl_device *qdev)
390{
391 int r;
392 int num_io_pages; /* != rom->num_io_pages, we include surface0 */
393
394 r = qxl_ttm_global_init(qdev);
395 if (r)
396 return r;
397 /* No others user of address space so set it to 0 */
398 r = ttm_bo_device_init(&qdev->mman.bdev,
399 qdev->mman.bo_global_ref.ref.object,
400 &qxl_bo_driver,
401 qdev->ddev->anon_inode->i_mapping,
402 DRM_FILE_PAGE_OFFSET, 0);
403 if (r) {
404 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
405 return r;
406 }
407 /* NOTE: this includes the framebuffer (aka surface 0) */
408 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
409 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
410 num_io_pages);
411 if (r) {
412 DRM_ERROR("Failed initializing VRAM heap.\n");
413 return r;
414 }
415 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV0,
416 qdev->surfaceram_size / PAGE_SIZE);
417 if (r) {
418 DRM_ERROR("Failed initializing Surfaces heap.\n");
419 return r;
420 }
421 DRM_INFO("qxl: %uM of VRAM memory size\n",
422 (unsigned)qdev->vram_size / (1024 * 1024));
423 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
424 ((unsigned)num_io_pages * PAGE_SIZE) / (1024 * 1024));
425 DRM_INFO("qxl: %uM of Surface memory size\n",
426 (unsigned)qdev->surfaceram_size / (1024 * 1024));
427 r = qxl_ttm_debugfs_init(qdev);
428 if (r) {
429 DRM_ERROR("Failed to init debugfs\n");
430 return r;
431 }
432 return 0;
433}
434
435void qxl_ttm_fini(struct qxl_device *qdev)
436{
437 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
438 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV0);
439 ttm_bo_device_release(&qdev->mman.bdev);
440 qxl_ttm_global_fini(qdev);
441 DRM_INFO("qxl: ttm finalized\n");
442}
443
444
445#define QXL_DEBUGFS_MEM_TYPES 2
446
447#if defined(CONFIG_DEBUG_FS)
448static int qxl_mm_dump_table(struct seq_file *m, void *data)
449{
450 struct drm_info_node *node = (struct drm_info_node *)m->private;
451 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
452 struct drm_device *dev = node->minor->dev;
453 struct qxl_device *rdev = dev->dev_private;
454 int ret;
455 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
456
457 spin_lock(&glob->lru_lock);
458 ret = drm_mm_dump_table(m, mm);
459 spin_unlock(&glob->lru_lock);
460 return ret;
461}
462#endif
463
464static int qxl_ttm_debugfs_init(struct qxl_device *qdev)
465{
466#if defined(CONFIG_DEBUG_FS)
467 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
468 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
469 unsigned i;
470
471 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
472 if (i == 0)
473 sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
474 else
475 sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
476 qxl_mem_types_list[i].name = qxl_mem_types_names[i];
477 qxl_mem_types_list[i].show = &qxl_mm_dump_table;
478 qxl_mem_types_list[i].driver_features = 0;
479 if (i == 0)
480 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
481 else
482 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;
483
484 }
485 return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
486#else
487 return 0;
488#endif
489}
1/*
2 * Copyright 2013 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 "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Dave Airlie
23 * Alon Levy
24 */
25
26#include <ttm/ttm_bo_api.h>
27#include <ttm/ttm_bo_driver.h>
28#include <ttm/ttm_placement.h>
29#include <ttm/ttm_page_alloc.h>
30#include <ttm/ttm_module.h>
31#include <drm/drmP.h>
32#include <drm/drm.h>
33#include <drm/qxl_drm.h>
34#include "qxl_drv.h"
35#include "qxl_object.h"
36
37#include <linux/delay.h>
38static int qxl_ttm_debugfs_init(struct qxl_device *qdev);
39
40static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
41{
42 struct qxl_mman *mman;
43 struct qxl_device *qdev;
44
45 mman = container_of(bdev, struct qxl_mman, bdev);
46 qdev = container_of(mman, struct qxl_device, mman);
47 return qdev;
48}
49
50static int qxl_ttm_mem_global_init(struct drm_global_reference *ref)
51{
52 return ttm_mem_global_init(ref->object);
53}
54
55static void qxl_ttm_mem_global_release(struct drm_global_reference *ref)
56{
57 ttm_mem_global_release(ref->object);
58}
59
60static int qxl_ttm_global_init(struct qxl_device *qdev)
61{
62 struct drm_global_reference *global_ref;
63 int r;
64
65 qdev->mman.mem_global_referenced = false;
66 global_ref = &qdev->mman.mem_global_ref;
67 global_ref->global_type = DRM_GLOBAL_TTM_MEM;
68 global_ref->size = sizeof(struct ttm_mem_global);
69 global_ref->init = &qxl_ttm_mem_global_init;
70 global_ref->release = &qxl_ttm_mem_global_release;
71
72 r = drm_global_item_ref(global_ref);
73 if (r != 0) {
74 DRM_ERROR("Failed setting up TTM memory accounting "
75 "subsystem.\n");
76 return r;
77 }
78
79 qdev->mman.bo_global_ref.mem_glob =
80 qdev->mman.mem_global_ref.object;
81 global_ref = &qdev->mman.bo_global_ref.ref;
82 global_ref->global_type = DRM_GLOBAL_TTM_BO;
83 global_ref->size = sizeof(struct ttm_bo_global);
84 global_ref->init = &ttm_bo_global_init;
85 global_ref->release = &ttm_bo_global_release;
86 r = drm_global_item_ref(global_ref);
87 if (r != 0) {
88 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
89 drm_global_item_unref(&qdev->mman.mem_global_ref);
90 return r;
91 }
92
93 qdev->mman.mem_global_referenced = true;
94 return 0;
95}
96
97static void qxl_ttm_global_fini(struct qxl_device *qdev)
98{
99 if (qdev->mman.mem_global_referenced) {
100 drm_global_item_unref(&qdev->mman.bo_global_ref.ref);
101 drm_global_item_unref(&qdev->mman.mem_global_ref);
102 qdev->mman.mem_global_referenced = false;
103 }
104}
105
106static struct vm_operations_struct qxl_ttm_vm_ops;
107static const struct vm_operations_struct *ttm_vm_ops;
108
109static int qxl_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
110{
111 struct ttm_buffer_object *bo;
112 struct qxl_device *qdev;
113 int r;
114
115 bo = (struct ttm_buffer_object *)vma->vm_private_data;
116 if (bo == NULL)
117 return VM_FAULT_NOPAGE;
118 qdev = qxl_get_qdev(bo->bdev);
119 r = ttm_vm_ops->fault(vma, vmf);
120 return r;
121}
122
123int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
124{
125 struct drm_file *file_priv;
126 struct qxl_device *qdev;
127 int r;
128
129 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
130 pr_info("%s: vma->vm_pgoff (%ld) < DRM_FILE_PAGE_OFFSET\n",
131 __func__, vma->vm_pgoff);
132 return drm_mmap(filp, vma);
133 }
134
135 file_priv = filp->private_data;
136 qdev = file_priv->minor->dev->dev_private;
137 if (qdev == NULL) {
138 DRM_ERROR(
139 "filp->private_data->minor->dev->dev_private == NULL\n");
140 return -EINVAL;
141 }
142 QXL_INFO(qdev, "%s: filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
143 __func__, filp->private_data, vma->vm_pgoff);
144
145 r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
146 if (unlikely(r != 0))
147 return r;
148 if (unlikely(ttm_vm_ops == NULL)) {
149 ttm_vm_ops = vma->vm_ops;
150 qxl_ttm_vm_ops = *ttm_vm_ops;
151 qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
152 }
153 vma->vm_ops = &qxl_ttm_vm_ops;
154 return 0;
155}
156
157static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
158{
159 return 0;
160}
161
162static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
163 struct ttm_mem_type_manager *man)
164{
165 struct qxl_device *qdev;
166
167 qdev = qxl_get_qdev(bdev);
168
169 switch (type) {
170 case TTM_PL_SYSTEM:
171 /* System memory */
172 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
173 man->available_caching = TTM_PL_MASK_CACHING;
174 man->default_caching = TTM_PL_FLAG_CACHED;
175 break;
176 case TTM_PL_VRAM:
177 case TTM_PL_PRIV0:
178 /* "On-card" video ram */
179 man->func = &ttm_bo_manager_func;
180 man->gpu_offset = 0;
181 man->flags = TTM_MEMTYPE_FLAG_FIXED |
182 TTM_MEMTYPE_FLAG_MAPPABLE;
183 man->available_caching = TTM_PL_MASK_CACHING;
184 man->default_caching = TTM_PL_FLAG_CACHED;
185 break;
186 default:
187 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
188 return -EINVAL;
189 }
190 return 0;
191}
192
193static void qxl_evict_flags(struct ttm_buffer_object *bo,
194 struct ttm_placement *placement)
195{
196 struct qxl_bo *qbo;
197 static u32 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
198
199 if (!qxl_ttm_bo_is_qxl_bo(bo)) {
200 placement->fpfn = 0;
201 placement->lpfn = 0;
202 placement->placement = &placements;
203 placement->busy_placement = &placements;
204 placement->num_placement = 1;
205 placement->num_busy_placement = 1;
206 return;
207 }
208 qbo = container_of(bo, struct qxl_bo, tbo);
209 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
210 *placement = qbo->placement;
211}
212
213static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
214{
215 struct qxl_bo *qbo = to_qxl_bo(bo);
216
217 return drm_vma_node_verify_access(&qbo->gem_base.vma_node, filp);
218}
219
220static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
221 struct ttm_mem_reg *mem)
222{
223 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
224 struct qxl_device *qdev = qxl_get_qdev(bdev);
225
226 mem->bus.addr = NULL;
227 mem->bus.offset = 0;
228 mem->bus.size = mem->num_pages << PAGE_SHIFT;
229 mem->bus.base = 0;
230 mem->bus.is_iomem = false;
231 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
232 return -EINVAL;
233 switch (mem->mem_type) {
234 case TTM_PL_SYSTEM:
235 /* system memory */
236 return 0;
237 case TTM_PL_VRAM:
238 mem->bus.is_iomem = true;
239 mem->bus.base = qdev->vram_base;
240 mem->bus.offset = mem->start << PAGE_SHIFT;
241 break;
242 case TTM_PL_PRIV0:
243 mem->bus.is_iomem = true;
244 mem->bus.base = qdev->surfaceram_base;
245 mem->bus.offset = mem->start << PAGE_SHIFT;
246 break;
247 default:
248 return -EINVAL;
249 }
250 return 0;
251}
252
253static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
254 struct ttm_mem_reg *mem)
255{
256}
257
258/*
259 * TTM backend functions.
260 */
261struct qxl_ttm_tt {
262 struct ttm_dma_tt ttm;
263 struct qxl_device *qdev;
264 u64 offset;
265};
266
267static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
268 struct ttm_mem_reg *bo_mem)
269{
270 struct qxl_ttm_tt *gtt = (void *)ttm;
271
272 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
273 if (!ttm->num_pages) {
274 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
275 ttm->num_pages, bo_mem, ttm);
276 }
277 /* Not implemented */
278 return -1;
279}
280
281static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
282{
283 /* Not implemented */
284 return -1;
285}
286
287static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
288{
289 struct qxl_ttm_tt *gtt = (void *)ttm;
290
291 ttm_dma_tt_fini(>t->ttm);
292 kfree(gtt);
293}
294
295static struct ttm_backend_func qxl_backend_func = {
296 .bind = &qxl_ttm_backend_bind,
297 .unbind = &qxl_ttm_backend_unbind,
298 .destroy = &qxl_ttm_backend_destroy,
299};
300
301static int qxl_ttm_tt_populate(struct ttm_tt *ttm)
302{
303 int r;
304
305 if (ttm->state != tt_unpopulated)
306 return 0;
307
308 r = ttm_pool_populate(ttm);
309 if (r)
310 return r;
311
312 return 0;
313}
314
315static void qxl_ttm_tt_unpopulate(struct ttm_tt *ttm)
316{
317 ttm_pool_unpopulate(ttm);
318}
319
320static struct ttm_tt *qxl_ttm_tt_create(struct ttm_bo_device *bdev,
321 unsigned long size, uint32_t page_flags,
322 struct page *dummy_read_page)
323{
324 struct qxl_device *qdev;
325 struct qxl_ttm_tt *gtt;
326
327 qdev = qxl_get_qdev(bdev);
328 gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
329 if (gtt == NULL)
330 return NULL;
331 gtt->ttm.ttm.func = &qxl_backend_func;
332 gtt->qdev = qdev;
333 if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags,
334 dummy_read_page)) {
335 kfree(gtt);
336 return NULL;
337 }
338 return >t->ttm.ttm;
339}
340
341static void qxl_move_null(struct ttm_buffer_object *bo,
342 struct ttm_mem_reg *new_mem)
343{
344 struct ttm_mem_reg *old_mem = &bo->mem;
345
346 BUG_ON(old_mem->mm_node != NULL);
347 *old_mem = *new_mem;
348 new_mem->mm_node = NULL;
349}
350
351static int qxl_bo_move(struct ttm_buffer_object *bo,
352 bool evict, bool interruptible,
353 bool no_wait_gpu,
354 struct ttm_mem_reg *new_mem)
355{
356 struct ttm_mem_reg *old_mem = &bo->mem;
357 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
358 qxl_move_null(bo, new_mem);
359 return 0;
360 }
361 return ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
362}
363
364
365static int qxl_sync_obj_wait(void *sync_obj,
366 bool lazy, bool interruptible)
367{
368 struct qxl_fence *qfence = (struct qxl_fence *)sync_obj;
369 int count = 0, sc = 0;
370 struct qxl_bo *bo = container_of(qfence, struct qxl_bo, fence);
371
372 if (qfence->num_active_releases == 0)
373 return 0;
374
375retry:
376 if (sc == 0) {
377 if (bo->type == QXL_GEM_DOMAIN_SURFACE)
378 qxl_update_surface(qfence->qdev, bo);
379 } else if (sc >= 1) {
380 qxl_io_notify_oom(qfence->qdev);
381 }
382
383 sc++;
384
385 for (count = 0; count < 10; count++) {
386 bool ret;
387 ret = qxl_queue_garbage_collect(qfence->qdev, true);
388 if (ret == false)
389 break;
390
391 if (qfence->num_active_releases == 0)
392 return 0;
393 }
394
395 if (qfence->num_active_releases) {
396 bool have_drawable_releases = false;
397 void **slot;
398 struct radix_tree_iter iter;
399 int release_id;
400
401 radix_tree_for_each_slot(slot, &qfence->tree, &iter, 0) {
402 struct qxl_release *release;
403
404 release_id = iter.index;
405 release = qxl_release_from_id_locked(qfence->qdev, release_id);
406 if (release == NULL)
407 continue;
408
409 if (release->type == QXL_RELEASE_DRAWABLE)
410 have_drawable_releases = true;
411 }
412
413 qxl_queue_garbage_collect(qfence->qdev, true);
414
415 if (have_drawable_releases || sc < 4) {
416 if (sc > 2)
417 /* back off */
418 usleep_range(500, 1000);
419 if (have_drawable_releases && sc > 300) {
420 WARN(1, "sync obj %d still has outstanding releases %d %d %d %ld %d\n", sc, bo->surface_id, bo->is_primary, bo->pin_count, (unsigned long)bo->gem_base.size, qfence->num_active_releases);
421 return -EBUSY;
422 }
423 goto retry;
424 }
425 }
426 return 0;
427}
428
429static int qxl_sync_obj_flush(void *sync_obj)
430{
431 return 0;
432}
433
434static void qxl_sync_obj_unref(void **sync_obj)
435{
436 *sync_obj = NULL;
437}
438
439static void *qxl_sync_obj_ref(void *sync_obj)
440{
441 return sync_obj;
442}
443
444static bool qxl_sync_obj_signaled(void *sync_obj)
445{
446 struct qxl_fence *qfence = (struct qxl_fence *)sync_obj;
447 return (qfence->num_active_releases == 0);
448}
449
450static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
451 struct ttm_mem_reg *new_mem)
452{
453 struct qxl_bo *qbo;
454 struct qxl_device *qdev;
455
456 if (!qxl_ttm_bo_is_qxl_bo(bo))
457 return;
458 qbo = container_of(bo, struct qxl_bo, tbo);
459 qdev = qbo->gem_base.dev->dev_private;
460
461 if (bo->mem.mem_type == TTM_PL_PRIV0 && qbo->surface_id)
462 qxl_surface_evict(qdev, qbo, new_mem ? true : false);
463}
464
465static struct ttm_bo_driver qxl_bo_driver = {
466 .ttm_tt_create = &qxl_ttm_tt_create,
467 .ttm_tt_populate = &qxl_ttm_tt_populate,
468 .ttm_tt_unpopulate = &qxl_ttm_tt_unpopulate,
469 .invalidate_caches = &qxl_invalidate_caches,
470 .init_mem_type = &qxl_init_mem_type,
471 .evict_flags = &qxl_evict_flags,
472 .move = &qxl_bo_move,
473 .verify_access = &qxl_verify_access,
474 .io_mem_reserve = &qxl_ttm_io_mem_reserve,
475 .io_mem_free = &qxl_ttm_io_mem_free,
476 .sync_obj_signaled = &qxl_sync_obj_signaled,
477 .sync_obj_wait = &qxl_sync_obj_wait,
478 .sync_obj_flush = &qxl_sync_obj_flush,
479 .sync_obj_unref = &qxl_sync_obj_unref,
480 .sync_obj_ref = &qxl_sync_obj_ref,
481 .move_notify = &qxl_bo_move_notify,
482};
483
484
485
486int qxl_ttm_init(struct qxl_device *qdev)
487{
488 int r;
489 int num_io_pages; /* != rom->num_io_pages, we include surface0 */
490
491 r = qxl_ttm_global_init(qdev);
492 if (r)
493 return r;
494 /* No others user of address space so set it to 0 */
495 r = ttm_bo_device_init(&qdev->mman.bdev,
496 qdev->mman.bo_global_ref.ref.object,
497 &qxl_bo_driver,
498 qdev->ddev->anon_inode->i_mapping,
499 DRM_FILE_PAGE_OFFSET, 0);
500 if (r) {
501 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
502 return r;
503 }
504 /* NOTE: this includes the framebuffer (aka surface 0) */
505 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
506 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
507 num_io_pages);
508 if (r) {
509 DRM_ERROR("Failed initializing VRAM heap.\n");
510 return r;
511 }
512 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV0,
513 qdev->surfaceram_size / PAGE_SIZE);
514 if (r) {
515 DRM_ERROR("Failed initializing Surfaces heap.\n");
516 return r;
517 }
518 DRM_INFO("qxl: %uM of VRAM memory size\n",
519 (unsigned)qdev->vram_size / (1024 * 1024));
520 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
521 ((unsigned)num_io_pages * PAGE_SIZE) / (1024 * 1024));
522 DRM_INFO("qxl: %uM of Surface memory size\n",
523 (unsigned)qdev->surfaceram_size / (1024 * 1024));
524 r = qxl_ttm_debugfs_init(qdev);
525 if (r) {
526 DRM_ERROR("Failed to init debugfs\n");
527 return r;
528 }
529 return 0;
530}
531
532void qxl_ttm_fini(struct qxl_device *qdev)
533{
534 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
535 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV0);
536 ttm_bo_device_release(&qdev->mman.bdev);
537 qxl_ttm_global_fini(qdev);
538 DRM_INFO("qxl: ttm finalized\n");
539}
540
541
542#define QXL_DEBUGFS_MEM_TYPES 2
543
544#if defined(CONFIG_DEBUG_FS)
545static int qxl_mm_dump_table(struct seq_file *m, void *data)
546{
547 struct drm_info_node *node = (struct drm_info_node *)m->private;
548 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
549 struct drm_device *dev = node->minor->dev;
550 struct qxl_device *rdev = dev->dev_private;
551 int ret;
552 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
553
554 spin_lock(&glob->lru_lock);
555 ret = drm_mm_dump_table(m, mm);
556 spin_unlock(&glob->lru_lock);
557 return ret;
558}
559#endif
560
561static int qxl_ttm_debugfs_init(struct qxl_device *qdev)
562{
563#if defined(CONFIG_DEBUG_FS)
564 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
565 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
566 unsigned i;
567
568 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
569 if (i == 0)
570 sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
571 else
572 sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
573 qxl_mem_types_list[i].name = qxl_mem_types_names[i];
574 qxl_mem_types_list[i].show = &qxl_mm_dump_table;
575 qxl_mem_types_list[i].driver_features = 0;
576 if (i == 0)
577 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
578 else
579 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;
580
581 }
582 return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
583#else
584 return 0;
585#endif
586}