2 * Copyright 2013 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
22 * Authors: Dave Airlie
27 #include "qxl_object.h"
29 #include <linux/io-mapping.h>
30 static void qxl_ttm_bo_destroy(struct ttm_buffer_object *tbo)
33 struct qxl_device *qdev;
36 qdev = to_qxl(bo->tbo.base.dev);
38 qxl_surface_evict(qdev, bo, false);
39 WARN_ON_ONCE(bo->map_count > 0);
40 mutex_lock(&qdev->gem.mutex);
41 list_del_init(&bo->list);
42 mutex_unlock(&qdev->gem.mutex);
43 drm_gem_object_release(&bo->tbo.base);
47 bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo)
49 if (bo->destroy == &qxl_ttm_bo_destroy)
54 void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned)
61 pflag |= TTM_PL_FLAG_NO_EVICT;
62 if (qbo->tbo.base.size <= PAGE_SIZE)
63 pflag |= TTM_PL_FLAG_TOPDOWN;
65 qbo->placement.placement = qbo->placements;
66 qbo->placement.busy_placement = qbo->placements;
67 if (domain == QXL_GEM_DOMAIN_VRAM) {
68 qbo->placements[c].mem_type = TTM_PL_VRAM;
69 qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | pflag;
71 if (domain == QXL_GEM_DOMAIN_SURFACE) {
72 qbo->placements[c].mem_type = TTM_PL_PRIV;
73 qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | pflag;
74 qbo->placements[c].mem_type = TTM_PL_VRAM;
75 qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | pflag;
77 if (domain == QXL_GEM_DOMAIN_CPU) {
78 qbo->placements[c].mem_type = TTM_PL_SYSTEM;
79 qbo->placements[c++].flags = TTM_PL_MASK_CACHING | pflag;
82 qbo->placements[c].mem_type = TTM_PL_SYSTEM;
83 qbo->placements[c++].flags = TTM_PL_MASK_CACHING;
85 qbo->placement.num_placement = c;
86 qbo->placement.num_busy_placement = c;
87 for (i = 0; i < c; ++i) {
88 qbo->placements[i].fpfn = 0;
89 qbo->placements[i].lpfn = 0;
93 static const struct drm_gem_object_funcs qxl_object_funcs = {
94 .free = qxl_gem_object_free,
95 .open = qxl_gem_object_open,
96 .close = qxl_gem_object_close,
97 .pin = qxl_gem_prime_pin,
98 .unpin = qxl_gem_prime_unpin,
99 .get_sg_table = qxl_gem_prime_get_sg_table,
100 .vmap = qxl_gem_prime_vmap,
101 .vunmap = qxl_gem_prime_vunmap,
102 .mmap = drm_gem_ttm_mmap,
103 .print_info = drm_gem_ttm_print_info,
106 int qxl_bo_create(struct qxl_device *qdev, unsigned long size,
107 bool kernel, bool pinned, u32 domain, u32 priority,
108 struct qxl_surface *surf,
109 struct qxl_bo **bo_ptr)
112 enum ttm_bo_type type;
116 type = ttm_bo_type_kernel;
118 type = ttm_bo_type_device;
120 bo = kzalloc(sizeof(struct qxl_bo), GFP_KERNEL);
123 size = roundup(size, PAGE_SIZE);
124 r = drm_gem_object_init(&qdev->ddev, &bo->tbo.base, size);
129 bo->tbo.base.funcs = &qxl_object_funcs;
131 bo->pin_count = pinned ? 1 : 0;
133 INIT_LIST_HEAD(&bo->list);
138 qxl_ttm_placement_from_domain(bo, domain, pinned);
140 bo->tbo.priority = priority;
141 r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type,
142 &bo->placement, 0, !kernel, size,
143 NULL, NULL, &qxl_ttm_bo_destroy);
144 if (unlikely(r != 0)) {
145 if (r != -ERESTARTSYS)
146 dev_err(qdev->ddev.dev,
147 "object_init failed for (%lu, 0x%08X)\n",
155 int qxl_bo_kmap(struct qxl_bo *bo, void **ptr)
166 r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
169 bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
176 void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev,
177 struct qxl_bo *bo, int page_offset)
179 unsigned long offset;
182 struct io_mapping *map;
184 if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
185 map = qdev->vram_mapping;
186 else if (bo->tbo.mem.mem_type == TTM_PL_PRIV)
187 map = qdev->surface_mapping;
191 offset = bo->tbo.mem.start << PAGE_SHIFT;
192 return io_mapping_map_atomic_wc(map, offset + page_offset);
195 rptr = bo->kptr + (page_offset * PAGE_SIZE);
199 ret = qxl_bo_kmap(bo, &rptr);
203 rptr += page_offset * PAGE_SIZE;
207 void qxl_bo_kunmap(struct qxl_bo *bo)
209 if (bo->kptr == NULL)
212 if (bo->map_count > 0)
215 ttm_bo_kunmap(&bo->kmap);
218 void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev,
219 struct qxl_bo *bo, void *pmap)
221 if ((bo->tbo.mem.mem_type != TTM_PL_VRAM) &&
222 (bo->tbo.mem.mem_type != TTM_PL_PRIV))
225 io_mapping_unmap_atomic(pmap);
231 void qxl_bo_unref(struct qxl_bo **bo)
236 drm_gem_object_put(&(*bo)->tbo.base);
240 struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo)
242 drm_gem_object_get(&bo->tbo.base);
246 static int __qxl_bo_pin(struct qxl_bo *bo)
248 struct ttm_operation_ctx ctx = { false, false };
249 struct drm_device *ddev = bo->tbo.base.dev;
256 qxl_ttm_placement_from_domain(bo, bo->type, true);
257 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
258 if (likely(r == 0)) {
261 if (unlikely(r != 0))
262 dev_err(ddev->dev, "%p pin failed\n", bo);
266 static int __qxl_bo_unpin(struct qxl_bo *bo)
268 struct ttm_operation_ctx ctx = { false, false };
269 struct drm_device *ddev = bo->tbo.base.dev;
272 if (!bo->pin_count) {
273 dev_warn(ddev->dev, "%p unpin not necessary\n", bo);
279 for (i = 0; i < bo->placement.num_placement; i++)
280 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
281 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
282 if (unlikely(r != 0))
283 dev_err(ddev->dev, "%p validate failed for unpin\n", bo);
288 * Reserve the BO before pinning the object. If the BO was reserved
289 * beforehand, use the internal version directly __qxl_bo_pin.
292 int qxl_bo_pin(struct qxl_bo *bo)
296 r = qxl_bo_reserve(bo);
300 r = __qxl_bo_pin(bo);
301 qxl_bo_unreserve(bo);
306 * Reserve the BO before pinning the object. If the BO was reserved
307 * beforehand, use the internal version directly __qxl_bo_unpin.
310 int qxl_bo_unpin(struct qxl_bo *bo)
314 r = qxl_bo_reserve(bo);
318 r = __qxl_bo_unpin(bo);
319 qxl_bo_unreserve(bo);
323 void qxl_bo_force_delete(struct qxl_device *qdev)
325 struct qxl_bo *bo, *n;
327 if (list_empty(&qdev->gem.objects))
329 dev_err(qdev->ddev.dev, "Userspace still has active objects !\n");
330 list_for_each_entry_safe(bo, n, &qdev->gem.objects, list) {
331 dev_err(qdev->ddev.dev, "%p %p %lu %lu force free\n",
332 &bo->tbo.base, bo, (unsigned long)bo->tbo.base.size,
333 *((unsigned long *)&bo->tbo.base.refcount));
334 mutex_lock(&qdev->gem.mutex);
335 list_del_init(&bo->list);
336 mutex_unlock(&qdev->gem.mutex);
337 /* this should unref the ttm bo */
338 drm_gem_object_put(&bo->tbo.base);
342 int qxl_bo_init(struct qxl_device *qdev)
344 return qxl_ttm_init(qdev);
347 void qxl_bo_fini(struct qxl_device *qdev)
352 int qxl_bo_check_id(struct qxl_device *qdev, struct qxl_bo *bo)
356 if (bo->type == QXL_GEM_DOMAIN_SURFACE && bo->surface_id == 0) {
357 /* allocate a surface id for this surface now */
358 ret = qxl_surface_id_alloc(qdev, bo);
362 ret = qxl_hw_surface_alloc(qdev, bo);
369 int qxl_surf_evict(struct qxl_device *qdev)
371 return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_PRIV);
374 int qxl_vram_evict(struct qxl_device *qdev)
376 return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_VRAM);