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f64122c1 DA |
1 | /* |
2 | * Copyright 2011 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 | * on the rights to use, copy, modify, merge, publish, distribute, sub | |
8 | * license, and/or sell copies of the Software, and to permit persons to whom | |
9 | * the Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
19 | * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
20 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
21 | */ | |
22 | #include "qxl_drv.h" | |
23 | #include "qxl_object.h" | |
24 | ||
25 | /* | |
26 | * drawable cmd cache - allocate a bunch of VRAM pages, suballocate | |
27 | * into 256 byte chunks for now - gives 16 cmds per page. | |
28 | * | |
29 | * use an ida to index into the chunks? | |
30 | */ | |
31 | /* manage releaseables */ | |
32 | /* stack them 16 high for now -drawable object is 191 */ | |
33 | #define RELEASE_SIZE 256 | |
34 | #define RELEASES_PER_BO (4096 / RELEASE_SIZE) | |
35 | /* put an alloc/dealloc surface cmd into one bo and round up to 128 */ | |
36 | #define SURFACE_RELEASE_SIZE 128 | |
37 | #define SURFACE_RELEASES_PER_BO (4096 / SURFACE_RELEASE_SIZE) | |
38 | ||
39 | static const int release_size_per_bo[] = { RELEASE_SIZE, SURFACE_RELEASE_SIZE, RELEASE_SIZE }; | |
40 | static const int releases_per_bo[] = { RELEASES_PER_BO, SURFACE_RELEASES_PER_BO, RELEASES_PER_BO }; | |
41 | uint64_t | |
42 | qxl_release_alloc(struct qxl_device *qdev, int type, | |
43 | struct qxl_release **ret) | |
44 | { | |
45 | struct qxl_release *release; | |
307b9c02 | 46 | int handle; |
f64122c1 DA |
47 | size_t size = sizeof(*release); |
48 | int idr_ret; | |
49 | ||
50 | release = kmalloc(size, GFP_KERNEL); | |
51 | if (!release) { | |
52 | DRM_ERROR("Out of memory\n"); | |
53 | return 0; | |
54 | } | |
55 | release->type = type; | |
56 | release->bo_count = 0; | |
57 | release->release_offset = 0; | |
58 | release->surface_release_id = 0; | |
307b9c02 DA |
59 | |
60 | idr_preload(GFP_KERNEL); | |
f64122c1 | 61 | spin_lock(&qdev->release_idr_lock); |
307b9c02 | 62 | idr_ret = idr_alloc(&qdev->release_idr, release, 1, 0, GFP_NOWAIT); |
f64122c1 | 63 | spin_unlock(&qdev->release_idr_lock); |
307b9c02 DA |
64 | idr_preload_end(); |
65 | handle = idr_ret; | |
66 | if (idr_ret < 0) | |
67 | goto release_fail; | |
68 | *ret = release; | |
f64122c1 DA |
69 | QXL_INFO(qdev, "allocated release %lld\n", handle); |
70 | release->id = handle; | |
71 | release_fail: | |
72 | ||
73 | return handle; | |
74 | } | |
75 | ||
76 | void | |
77 | qxl_release_free(struct qxl_device *qdev, | |
78 | struct qxl_release *release) | |
79 | { | |
80 | int i; | |
81 | ||
82 | QXL_INFO(qdev, "release %d, type %d, %d bos\n", release->id, | |
83 | release->type, release->bo_count); | |
84 | ||
85 | if (release->surface_release_id) | |
86 | qxl_surface_id_dealloc(qdev, release->surface_release_id); | |
87 | ||
88 | for (i = 0 ; i < release->bo_count; ++i) { | |
89 | QXL_INFO(qdev, "release %llx\n", | |
72525b3f | 90 | drm_vma_node_offset_addr(&release->bos[i]->tbo.vma_node) |
f64122c1 DA |
91 | - DRM_FILE_OFFSET); |
92 | qxl_fence_remove_release(&release->bos[i]->fence, release->id); | |
93 | qxl_bo_unref(&release->bos[i]); | |
94 | } | |
95 | spin_lock(&qdev->release_idr_lock); | |
96 | idr_remove(&qdev->release_idr, release->id); | |
97 | spin_unlock(&qdev->release_idr_lock); | |
98 | kfree(release); | |
99 | } | |
100 | ||
101 | void | |
102 | qxl_release_add_res(struct qxl_device *qdev, struct qxl_release *release, | |
103 | struct qxl_bo *bo) | |
104 | { | |
105 | int i; | |
106 | for (i = 0; i < release->bo_count; i++) | |
107 | if (release->bos[i] == bo) | |
108 | return; | |
109 | ||
110 | if (release->bo_count >= QXL_MAX_RES) { | |
111 | DRM_ERROR("exceeded max resource on a qxl_release item\n"); | |
112 | return; | |
113 | } | |
114 | release->bos[release->bo_count++] = qxl_bo_ref(bo); | |
115 | } | |
116 | ||
6d01f1f5 DA |
117 | static int qxl_release_bo_alloc(struct qxl_device *qdev, |
118 | struct qxl_bo **bo) | |
f64122c1 DA |
119 | { |
120 | int ret; | |
121 | ret = qxl_bo_create(qdev, PAGE_SIZE, false, QXL_GEM_DOMAIN_VRAM, NULL, | |
122 | bo); | |
123 | return ret; | |
124 | } | |
125 | ||
126 | int qxl_release_reserve(struct qxl_device *qdev, | |
127 | struct qxl_release *release, bool no_wait) | |
128 | { | |
129 | int ret; | |
130 | if (atomic_inc_return(&release->bos[0]->reserve_count) == 1) { | |
131 | ret = qxl_bo_reserve(release->bos[0], no_wait); | |
132 | if (ret) | |
133 | return ret; | |
134 | } | |
135 | return 0; | |
136 | } | |
137 | ||
138 | void qxl_release_unreserve(struct qxl_device *qdev, | |
139 | struct qxl_release *release) | |
140 | { | |
141 | if (atomic_dec_and_test(&release->bos[0]->reserve_count)) | |
142 | qxl_bo_unreserve(release->bos[0]); | |
143 | } | |
144 | ||
145 | int qxl_alloc_surface_release_reserved(struct qxl_device *qdev, | |
146 | enum qxl_surface_cmd_type surface_cmd_type, | |
147 | struct qxl_release *create_rel, | |
148 | struct qxl_release **release) | |
149 | { | |
150 | int ret; | |
151 | ||
152 | if (surface_cmd_type == QXL_SURFACE_CMD_DESTROY && create_rel) { | |
153 | int idr_ret; | |
154 | struct qxl_bo *bo; | |
155 | union qxl_release_info *info; | |
156 | ||
157 | /* stash the release after the create command */ | |
158 | idr_ret = qxl_release_alloc(qdev, QXL_RELEASE_SURFACE_CMD, release); | |
159 | bo = qxl_bo_ref(create_rel->bos[0]); | |
160 | ||
161 | (*release)->release_offset = create_rel->release_offset + 64; | |
162 | ||
163 | qxl_release_add_res(qdev, *release, bo); | |
164 | ||
165 | ret = qxl_release_reserve(qdev, *release, false); | |
166 | if (ret) { | |
167 | DRM_ERROR("release reserve failed\n"); | |
168 | goto out_unref; | |
169 | } | |
170 | info = qxl_release_map(qdev, *release); | |
171 | info->id = idr_ret; | |
172 | qxl_release_unmap(qdev, *release, info); | |
173 | ||
174 | ||
175 | out_unref: | |
176 | qxl_bo_unref(&bo); | |
177 | return ret; | |
178 | } | |
179 | ||
180 | return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_surface_cmd), | |
181 | QXL_RELEASE_SURFACE_CMD, release, NULL); | |
182 | } | |
183 | ||
184 | int qxl_alloc_release_reserved(struct qxl_device *qdev, unsigned long size, | |
185 | int type, struct qxl_release **release, | |
186 | struct qxl_bo **rbo) | |
187 | { | |
188 | struct qxl_bo *bo; | |
189 | int idr_ret; | |
190 | int ret; | |
191 | union qxl_release_info *info; | |
192 | int cur_idx; | |
193 | ||
194 | if (type == QXL_RELEASE_DRAWABLE) | |
195 | cur_idx = 0; | |
196 | else if (type == QXL_RELEASE_SURFACE_CMD) | |
197 | cur_idx = 1; | |
198 | else if (type == QXL_RELEASE_CURSOR_CMD) | |
199 | cur_idx = 2; | |
200 | else { | |
201 | DRM_ERROR("got illegal type: %d\n", type); | |
202 | return -EINVAL; | |
203 | } | |
204 | ||
205 | idr_ret = qxl_release_alloc(qdev, type, release); | |
206 | ||
207 | mutex_lock(&qdev->release_mutex); | |
208 | if (qdev->current_release_bo_offset[cur_idx] + 1 >= releases_per_bo[cur_idx]) { | |
209 | qxl_bo_unref(&qdev->current_release_bo[cur_idx]); | |
210 | qdev->current_release_bo_offset[cur_idx] = 0; | |
211 | qdev->current_release_bo[cur_idx] = NULL; | |
212 | } | |
213 | if (!qdev->current_release_bo[cur_idx]) { | |
214 | ret = qxl_release_bo_alloc(qdev, &qdev->current_release_bo[cur_idx]); | |
215 | if (ret) { | |
216 | mutex_unlock(&qdev->release_mutex); | |
217 | return ret; | |
218 | } | |
219 | ||
220 | /* pin releases bo's they are too messy to evict */ | |
221 | ret = qxl_bo_reserve(qdev->current_release_bo[cur_idx], false); | |
222 | qxl_bo_pin(qdev->current_release_bo[cur_idx], QXL_GEM_DOMAIN_VRAM, NULL); | |
223 | qxl_bo_unreserve(qdev->current_release_bo[cur_idx]); | |
224 | } | |
225 | ||
226 | bo = qxl_bo_ref(qdev->current_release_bo[cur_idx]); | |
227 | ||
228 | (*release)->release_offset = qdev->current_release_bo_offset[cur_idx] * release_size_per_bo[cur_idx]; | |
229 | qdev->current_release_bo_offset[cur_idx]++; | |
230 | ||
231 | if (rbo) | |
232 | *rbo = bo; | |
233 | ||
234 | qxl_release_add_res(qdev, *release, bo); | |
235 | ||
236 | ret = qxl_release_reserve(qdev, *release, false); | |
237 | mutex_unlock(&qdev->release_mutex); | |
238 | if (ret) | |
239 | goto out_unref; | |
240 | ||
241 | info = qxl_release_map(qdev, *release); | |
242 | info->id = idr_ret; | |
243 | qxl_release_unmap(qdev, *release, info); | |
244 | ||
245 | out_unref: | |
246 | qxl_bo_unref(&bo); | |
247 | return ret; | |
248 | } | |
249 | ||
250 | int qxl_fence_releaseable(struct qxl_device *qdev, | |
251 | struct qxl_release *release) | |
252 | { | |
253 | int i, ret; | |
254 | for (i = 0; i < release->bo_count; i++) { | |
255 | if (!release->bos[i]->tbo.sync_obj) | |
256 | release->bos[i]->tbo.sync_obj = &release->bos[i]->fence; | |
257 | ret = qxl_fence_add_release(&release->bos[i]->fence, release->id); | |
258 | if (ret) | |
259 | return ret; | |
260 | } | |
261 | return 0; | |
262 | } | |
263 | ||
264 | struct qxl_release *qxl_release_from_id_locked(struct qxl_device *qdev, | |
265 | uint64_t id) | |
266 | { | |
267 | struct qxl_release *release; | |
268 | ||
269 | spin_lock(&qdev->release_idr_lock); | |
270 | release = idr_find(&qdev->release_idr, id); | |
271 | spin_unlock(&qdev->release_idr_lock); | |
272 | if (!release) { | |
273 | DRM_ERROR("failed to find id in release_idr\n"); | |
274 | return NULL; | |
275 | } | |
276 | if (release->bo_count < 1) { | |
277 | DRM_ERROR("read a released resource with 0 bos\n"); | |
278 | return NULL; | |
279 | } | |
280 | return release; | |
281 | } | |
282 | ||
283 | union qxl_release_info *qxl_release_map(struct qxl_device *qdev, | |
284 | struct qxl_release *release) | |
285 | { | |
286 | void *ptr; | |
287 | union qxl_release_info *info; | |
288 | struct qxl_bo *bo = release->bos[0]; | |
289 | ||
290 | ptr = qxl_bo_kmap_atomic_page(qdev, bo, release->release_offset & PAGE_SIZE); | |
291 | info = ptr + (release->release_offset & ~PAGE_SIZE); | |
292 | return info; | |
293 | } | |
294 | ||
295 | void qxl_release_unmap(struct qxl_device *qdev, | |
296 | struct qxl_release *release, | |
297 | union qxl_release_info *info) | |
298 | { | |
299 | struct qxl_bo *bo = release->bos[0]; | |
300 | void *ptr; | |
301 | ||
302 | ptr = ((void *)info) - (release->release_offset & ~PAGE_SIZE); | |
303 | qxl_bo_kunmap_atomic_page(qdev, bo, ptr); | |
304 | } |