]>
Commit | Line | Data |
---|---|---|
d991ef03 JB |
1 | /************************************************************************** |
2 | * | |
3 | * Copyright © 2011 VMware, Inc., Palo Alto, CA., USA | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
27 | ||
760285e7 | 28 | #include <drm/ttm/ttm_placement.h> |
d991ef03 | 29 | |
760285e7 | 30 | #include <drm/drmP.h> |
d991ef03 JB |
31 | #include "vmwgfx_drv.h" |
32 | ||
33 | ||
34 | /** | |
b37a6b9a | 35 | * vmw_dmabuf_to_placement - Validate a buffer to placement. |
d991ef03 | 36 | * |
b37a6b9a TH |
37 | * @dev_priv: Driver private. |
38 | * @buf: DMA buffer to move. | |
39 | * @pin: Pin buffer if true. | |
40 | * @interruptible: Use interruptible wait. | |
41 | * | |
42 | * May only be called by the current master since it assumes that the | |
43 | * master lock is the current master's lock. | |
44 | * This function takes the master's lock in write mode. | |
e2fa3a76 | 45 | * Flushes and unpins the query bo to avoid failures. |
d991ef03 JB |
46 | * |
47 | * Returns | |
48 | * -ERESTARTSYS if interrupted by a signal. | |
49 | */ | |
50 | int vmw_dmabuf_to_placement(struct vmw_private *dev_priv, | |
51 | struct vmw_dma_buffer *buf, | |
52 | struct ttm_placement *placement, | |
53 | bool interruptible) | |
54 | { | |
55 | struct vmw_master *vmaster = dev_priv->active_master; | |
56 | struct ttm_buffer_object *bo = &buf->base; | |
57 | int ret; | |
58 | ||
59 | ret = ttm_write_lock(&vmaster->lock, interruptible); | |
60 | if (unlikely(ret != 0)) | |
61 | return ret; | |
62 | ||
e2fa3a76 TH |
63 | vmw_execbuf_release_pinned_bo(dev_priv, false, 0); |
64 | ||
d991ef03 JB |
65 | ret = ttm_bo_reserve(bo, interruptible, false, false, 0); |
66 | if (unlikely(ret != 0)) | |
67 | goto err; | |
68 | ||
69 | ret = ttm_bo_validate(bo, placement, interruptible, false, false); | |
70 | ||
71 | ttm_bo_unreserve(bo); | |
72 | ||
73 | err: | |
74 | ttm_write_unlock(&vmaster->lock); | |
75 | return ret; | |
76 | } | |
77 | ||
78 | /** | |
b37a6b9a | 79 | * vmw_dmabuf_to_vram_or_gmr - Move a buffer to vram or gmr. |
d991ef03 | 80 | * |
b37a6b9a TH |
81 | * May only be called by the current master since it assumes that the |
82 | * master lock is the current master's lock. | |
83 | * This function takes the master's lock in write mode. | |
e2fa3a76 | 84 | * Flushes and unpins the query bo if @pin == true to avoid failures. |
d991ef03 JB |
85 | * |
86 | * @dev_priv: Driver private. | |
87 | * @buf: DMA buffer to move. | |
88 | * @pin: Pin buffer if true. | |
89 | * @interruptible: Use interruptible wait. | |
90 | * | |
91 | * Returns | |
92 | * -ERESTARTSYS if interrupted by a signal. | |
93 | */ | |
94 | int vmw_dmabuf_to_vram_or_gmr(struct vmw_private *dev_priv, | |
95 | struct vmw_dma_buffer *buf, | |
96 | bool pin, bool interruptible) | |
97 | { | |
98 | struct vmw_master *vmaster = dev_priv->active_master; | |
99 | struct ttm_buffer_object *bo = &buf->base; | |
100 | struct ttm_placement *placement; | |
101 | int ret; | |
102 | ||
103 | ret = ttm_write_lock(&vmaster->lock, interruptible); | |
104 | if (unlikely(ret != 0)) | |
105 | return ret; | |
106 | ||
e2fa3a76 TH |
107 | if (pin) |
108 | vmw_execbuf_release_pinned_bo(dev_priv, false, 0); | |
109 | ||
d991ef03 JB |
110 | ret = ttm_bo_reserve(bo, interruptible, false, false, 0); |
111 | if (unlikely(ret != 0)) | |
112 | goto err; | |
113 | ||
114 | /** | |
115 | * Put BO in VRAM if there is space, otherwise as a GMR. | |
116 | * If there is no space in VRAM and GMR ids are all used up, | |
117 | * start evicting GMRs to make room. If the DMA buffer can't be | |
118 | * used as a GMR, this will return -ENOMEM. | |
119 | */ | |
120 | ||
121 | if (pin) | |
122 | placement = &vmw_vram_gmr_ne_placement; | |
123 | else | |
124 | placement = &vmw_vram_gmr_placement; | |
125 | ||
126 | ret = ttm_bo_validate(bo, placement, interruptible, false, false); | |
127 | if (likely(ret == 0) || ret == -ERESTARTSYS) | |
128 | goto err_unreserve; | |
129 | ||
130 | ||
131 | /** | |
132 | * If that failed, try VRAM again, this time evicting | |
133 | * previous contents. | |
134 | */ | |
135 | ||
136 | if (pin) | |
137 | placement = &vmw_vram_ne_placement; | |
138 | else | |
139 | placement = &vmw_vram_placement; | |
140 | ||
141 | ret = ttm_bo_validate(bo, placement, interruptible, false, false); | |
142 | ||
143 | err_unreserve: | |
144 | ttm_bo_unreserve(bo); | |
145 | err: | |
146 | ttm_write_unlock(&vmaster->lock); | |
147 | return ret; | |
148 | } | |
149 | ||
150 | /** | |
b37a6b9a | 151 | * vmw_dmabuf_to_vram - Move a buffer to vram. |
d991ef03 | 152 | * |
b37a6b9a TH |
153 | * May only be called by the current master since it assumes that the |
154 | * master lock is the current master's lock. | |
155 | * This function takes the master's lock in write mode. | |
d991ef03 JB |
156 | * |
157 | * @dev_priv: Driver private. | |
158 | * @buf: DMA buffer to move. | |
159 | * @pin: Pin buffer in vram if true. | |
160 | * @interruptible: Use interruptible wait. | |
161 | * | |
162 | * Returns | |
163 | * -ERESTARTSYS if interrupted by a signal. | |
164 | */ | |
165 | int vmw_dmabuf_to_vram(struct vmw_private *dev_priv, | |
166 | struct vmw_dma_buffer *buf, | |
167 | bool pin, bool interruptible) | |
168 | { | |
169 | struct ttm_placement *placement; | |
170 | ||
171 | if (pin) | |
172 | placement = &vmw_vram_ne_placement; | |
173 | else | |
174 | placement = &vmw_vram_placement; | |
175 | ||
176 | return vmw_dmabuf_to_placement(dev_priv, buf, | |
177 | placement, | |
178 | interruptible); | |
179 | } | |
180 | ||
181 | /** | |
b37a6b9a | 182 | * vmw_dmabuf_to_start_of_vram - Move a buffer to start of vram. |
d991ef03 | 183 | * |
b37a6b9a TH |
184 | * May only be called by the current master since it assumes that the |
185 | * master lock is the current master's lock. | |
186 | * This function takes the master's lock in write mode. | |
e2fa3a76 | 187 | * Flushes and unpins the query bo if @pin == true to avoid failures. |
d991ef03 JB |
188 | * |
189 | * @dev_priv: Driver private. | |
190 | * @buf: DMA buffer to move. | |
191 | * @pin: Pin buffer in vram if true. | |
192 | * @interruptible: Use interruptible wait. | |
193 | * | |
194 | * Returns | |
195 | * -ERESTARTSYS if interrupted by a signal. | |
196 | */ | |
197 | int vmw_dmabuf_to_start_of_vram(struct vmw_private *dev_priv, | |
198 | struct vmw_dma_buffer *buf, | |
199 | bool pin, bool interruptible) | |
200 | { | |
201 | struct vmw_master *vmaster = dev_priv->active_master; | |
202 | struct ttm_buffer_object *bo = &buf->base; | |
203 | struct ttm_placement placement; | |
204 | int ret = 0; | |
205 | ||
206 | if (pin) | |
207 | placement = vmw_vram_ne_placement; | |
208 | else | |
209 | placement = vmw_vram_placement; | |
210 | placement.lpfn = bo->num_pages; | |
211 | ||
212 | ret = ttm_write_lock(&vmaster->lock, interruptible); | |
213 | if (unlikely(ret != 0)) | |
214 | return ret; | |
215 | ||
e2fa3a76 TH |
216 | if (pin) |
217 | vmw_execbuf_release_pinned_bo(dev_priv, false, 0); | |
218 | ||
d991ef03 JB |
219 | ret = ttm_bo_reserve(bo, interruptible, false, false, 0); |
220 | if (unlikely(ret != 0)) | |
221 | goto err_unlock; | |
222 | ||
223 | /* Is this buffer already in vram but not at the start of it? */ | |
224 | if (bo->mem.mem_type == TTM_PL_VRAM && | |
225 | bo->mem.start < bo->num_pages && | |
226 | bo->mem.start > 0) | |
227 | (void) ttm_bo_validate(bo, &vmw_sys_placement, false, | |
228 | false, false); | |
229 | ||
230 | ret = ttm_bo_validate(bo, &placement, interruptible, false, false); | |
231 | ||
232 | /* For some reason we didn't up at the start of vram */ | |
233 | WARN_ON(ret == 0 && bo->offset != 0); | |
234 | ||
235 | ttm_bo_unreserve(bo); | |
236 | err_unlock: | |
237 | ttm_write_unlock(&vmaster->lock); | |
238 | ||
239 | return ret; | |
240 | } | |
241 | ||
b37a6b9a | 242 | |
d991ef03 | 243 | /** |
b37a6b9a | 244 | * vmw_dmabuf_upin - Unpin the buffer given buffer, does not move the buffer. |
d991ef03 | 245 | * |
b37a6b9a TH |
246 | * May only be called by the current master since it assumes that the |
247 | * master lock is the current master's lock. | |
248 | * This function takes the master's lock in write mode. | |
d991ef03 JB |
249 | * |
250 | * @dev_priv: Driver private. | |
251 | * @buf: DMA buffer to unpin. | |
252 | * @interruptible: Use interruptible wait. | |
253 | * | |
254 | * Returns | |
255 | * -ERESTARTSYS if interrupted by a signal. | |
256 | */ | |
257 | int vmw_dmabuf_unpin(struct vmw_private *dev_priv, | |
258 | struct vmw_dma_buffer *buf, | |
259 | bool interruptible) | |
260 | { | |
261 | /* | |
262 | * We could in theory early out if the buffer is | |
263 | * unpinned but we need to lock and reserve the buffer | |
264 | * anyways so we don't gain much by that. | |
265 | */ | |
266 | return vmw_dmabuf_to_placement(dev_priv, buf, | |
267 | &vmw_evictable_placement, | |
268 | interruptible); | |
269 | } | |
270 | ||
b37a6b9a | 271 | |
d991ef03 | 272 | /** |
b37a6b9a TH |
273 | * vmw_bo_get_guest_ptr - Get the guest ptr representing the current placement |
274 | * of a buffer. | |
d991ef03 | 275 | * |
b37a6b9a TH |
276 | * @bo: Pointer to a struct ttm_buffer_object. Must be pinned or reserved. |
277 | * @ptr: SVGAGuestPtr returning the result. | |
d991ef03 | 278 | */ |
b37a6b9a TH |
279 | void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *bo, |
280 | SVGAGuestPtr *ptr) | |
d991ef03 | 281 | { |
b37a6b9a | 282 | if (bo->mem.mem_type == TTM_PL_VRAM) { |
d991ef03 | 283 | ptr->gmrId = SVGA_GMR_FRAMEBUFFER; |
b37a6b9a | 284 | ptr->offset = bo->offset; |
d991ef03 | 285 | } else { |
b37a6b9a | 286 | ptr->gmrId = bo->mem.start; |
d991ef03 JB |
287 | ptr->offset = 0; |
288 | } | |
289 | } | |
e2fa3a76 TH |
290 | |
291 | ||
292 | /** | |
293 | * vmw_bo_pin - Pin or unpin a buffer object without moving it. | |
294 | * | |
295 | * @bo: The buffer object. Must be reserved, and present either in VRAM | |
296 | * or GMR memory. | |
297 | * @pin: Whether to pin or unpin. | |
298 | * | |
299 | */ | |
300 | void vmw_bo_pin(struct ttm_buffer_object *bo, bool pin) | |
301 | { | |
302 | uint32_t pl_flags; | |
303 | struct ttm_placement placement; | |
304 | uint32_t old_mem_type = bo->mem.mem_type; | |
305 | int ret; | |
306 | ||
307 | BUG_ON(!atomic_read(&bo->reserved)); | |
308 | BUG_ON(old_mem_type != TTM_PL_VRAM && | |
309 | old_mem_type != VMW_PL_FLAG_GMR); | |
310 | ||
311 | pl_flags = TTM_PL_FLAG_VRAM | VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED; | |
312 | if (pin) | |
313 | pl_flags |= TTM_PL_FLAG_NO_EVICT; | |
314 | ||
315 | memset(&placement, 0, sizeof(placement)); | |
316 | placement.num_placement = 1; | |
317 | placement.placement = &pl_flags; | |
318 | ||
319 | ret = ttm_bo_validate(bo, &placement, false, true, true); | |
320 | ||
321 | BUG_ON(ret != 0 || bo->mem.mem_type != old_mem_type); | |
322 | } |