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dff96888 | 1 | // SPDX-License-Identifier: GPL-2.0 OR MIT |
d80efd5c TH |
2 | /************************************************************************** |
3 | * | |
dff96888 | 4 | * Copyright 2014-2015 VMware, Inc., Palo Alto, CA., USA |
d80efd5c TH |
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 | /* | |
28 | * Treat context OTables as resources to make use of the resource | |
29 | * backing MOB eviction mechanism, that is used to read back the COTable | |
30 | * whenever the backing MOB is evicted. | |
31 | */ | |
32 | ||
008be682 MY |
33 | #include <drm/ttm/ttm_placement.h> |
34 | ||
d80efd5c TH |
35 | #include "vmwgfx_drv.h" |
36 | #include "vmwgfx_resource_priv.h" | |
d80efd5c TH |
37 | #include "vmwgfx_so.h" |
38 | ||
39 | /** | |
40 | * struct vmw_cotable - Context Object Table resource | |
41 | * | |
42 | * @res: struct vmw_resource we are deriving from. | |
43 | * @ctx: non-refcounted pointer to the owning context. | |
44 | * @size_read_back: Size of data read back during eviction. | |
45 | * @seen_entries: Seen entries in command stream for this cotable. | |
46 | * @type: The cotable type. | |
47 | * @scrubbed: Whether the cotable has been scrubbed. | |
48 | * @resource_list: List of resources in the cotable. | |
49 | */ | |
50 | struct vmw_cotable { | |
51 | struct vmw_resource res; | |
52 | struct vmw_resource *ctx; | |
53 | size_t size_read_back; | |
54 | int seen_entries; | |
55 | u32 type; | |
56 | bool scrubbed; | |
57 | struct list_head resource_list; | |
58 | }; | |
59 | ||
60 | /** | |
61 | * struct vmw_cotable_info - Static info about cotable types | |
62 | * | |
63 | * @min_initial_entries: Min number of initial intries at cotable allocation | |
64 | * for this cotable type. | |
65 | * @size: Size of each entry. | |
66 | */ | |
67 | struct vmw_cotable_info { | |
68 | u32 min_initial_entries; | |
69 | u32 size; | |
70 | void (*unbind_func)(struct vmw_private *, struct list_head *, | |
71 | bool); | |
72 | }; | |
73 | ||
74 | static const struct vmw_cotable_info co_info[] = { | |
75 | {1, sizeof(SVGACOTableDXRTViewEntry), &vmw_view_cotable_list_destroy}, | |
76 | {1, sizeof(SVGACOTableDXDSViewEntry), &vmw_view_cotable_list_destroy}, | |
77 | {1, sizeof(SVGACOTableDXSRViewEntry), &vmw_view_cotable_list_destroy}, | |
78 | {1, sizeof(SVGACOTableDXElementLayoutEntry), NULL}, | |
79 | {1, sizeof(SVGACOTableDXBlendStateEntry), NULL}, | |
80 | {1, sizeof(SVGACOTableDXDepthStencilEntry), NULL}, | |
81 | {1, sizeof(SVGACOTableDXRasterizerStateEntry), NULL}, | |
82 | {1, sizeof(SVGACOTableDXSamplerEntry), NULL}, | |
e8bead9c | 83 | {1, sizeof(SVGACOTableDXStreamOutputEntry), &vmw_dx_streamoutput_cotable_list_scrub}, |
d80efd5c | 84 | {1, sizeof(SVGACOTableDXQueryEntry), NULL}, |
5e8ec0d9 DR |
85 | {1, sizeof(SVGACOTableDXShaderEntry), &vmw_dx_shader_cotable_list_scrub}, |
86 | {1, sizeof(SVGACOTableDXUAViewEntry), &vmw_view_cotable_list_destroy} | |
d80efd5c TH |
87 | }; |
88 | ||
89 | /* | |
90 | * Cotables with bindings that we remove must be scrubbed first, | |
91 | * otherwise, the device will swap in an invalid context when we remove | |
92 | * bindings before scrubbing a cotable... | |
93 | */ | |
94 | const SVGACOTableType vmw_cotable_scrub_order[] = { | |
95 | SVGA_COTABLE_RTVIEW, | |
96 | SVGA_COTABLE_DSVIEW, | |
97 | SVGA_COTABLE_SRVIEW, | |
98 | SVGA_COTABLE_DXSHADER, | |
99 | SVGA_COTABLE_ELEMENTLAYOUT, | |
100 | SVGA_COTABLE_BLENDSTATE, | |
101 | SVGA_COTABLE_DEPTHSTENCIL, | |
102 | SVGA_COTABLE_RASTERIZERSTATE, | |
103 | SVGA_COTABLE_SAMPLER, | |
104 | SVGA_COTABLE_STREAMOUTPUT, | |
105 | SVGA_COTABLE_DXQUERY, | |
5e8ec0d9 | 106 | SVGA_COTABLE_UAVIEW, |
d80efd5c TH |
107 | }; |
108 | ||
109 | static int vmw_cotable_bind(struct vmw_resource *res, | |
110 | struct ttm_validate_buffer *val_buf); | |
111 | static int vmw_cotable_unbind(struct vmw_resource *res, | |
112 | bool readback, | |
113 | struct ttm_validate_buffer *val_buf); | |
114 | static int vmw_cotable_create(struct vmw_resource *res); | |
115 | static int vmw_cotable_destroy(struct vmw_resource *res); | |
116 | ||
117 | static const struct vmw_res_func vmw_cotable_func = { | |
118 | .res_type = vmw_res_cotable, | |
119 | .needs_backup = true, | |
120 | .may_evict = true, | |
a0a63940 TH |
121 | .prio = 3, |
122 | .dirty_prio = 3, | |
d80efd5c TH |
123 | .type_name = "context guest backed object tables", |
124 | .backup_placement = &vmw_mob_placement, | |
125 | .create = vmw_cotable_create, | |
126 | .destroy = vmw_cotable_destroy, | |
127 | .bind = vmw_cotable_bind, | |
128 | .unbind = vmw_cotable_unbind, | |
129 | }; | |
130 | ||
131 | /** | |
132 | * vmw_cotable - Convert a struct vmw_resource pointer to a struct | |
133 | * vmw_cotable pointer | |
134 | * | |
135 | * @res: Pointer to the resource. | |
136 | */ | |
137 | static struct vmw_cotable *vmw_cotable(struct vmw_resource *res) | |
138 | { | |
139 | return container_of(res, struct vmw_cotable, res); | |
140 | } | |
141 | ||
142 | /** | |
143 | * vmw_cotable_destroy - Cotable resource destroy callback | |
144 | * | |
145 | * @res: Pointer to the cotable resource. | |
146 | * | |
147 | * There is no device cotable destroy command, so this function only | |
148 | * makes sure that the resource id is set to invalid. | |
149 | */ | |
150 | static int vmw_cotable_destroy(struct vmw_resource *res) | |
151 | { | |
152 | res->id = -1; | |
153 | return 0; | |
154 | } | |
155 | ||
156 | /** | |
157 | * vmw_cotable_unscrub - Undo a cotable unscrub operation | |
158 | * | |
159 | * @res: Pointer to the cotable resource | |
160 | * | |
161 | * This function issues commands to (re)bind the cotable to | |
162 | * its backing mob, which needs to be validated and reserved at this point. | |
163 | * This is identical to bind() except the function interface looks different. | |
164 | */ | |
165 | static int vmw_cotable_unscrub(struct vmw_resource *res) | |
166 | { | |
167 | struct vmw_cotable *vcotbl = vmw_cotable(res); | |
168 | struct vmw_private *dev_priv = res->dev_priv; | |
169 | struct ttm_buffer_object *bo = &res->backup->base; | |
170 | struct { | |
171 | SVGA3dCmdHeader header; | |
172 | SVGA3dCmdDXSetCOTable body; | |
173 | } *cmd; | |
174 | ||
175 | WARN_ON_ONCE(bo->mem.mem_type != VMW_PL_MOB); | |
52791eee | 176 | dma_resv_assert_held(bo->base.resv); |
d80efd5c | 177 | |
11c45419 DR |
178 | cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd)); |
179 | if (!cmd) | |
d80efd5c | 180 | return -ENOMEM; |
d80efd5c TH |
181 | |
182 | WARN_ON(vcotbl->ctx->id == SVGA3D_INVALID_ID); | |
183 | WARN_ON(bo->mem.mem_type != VMW_PL_MOB); | |
184 | cmd->header.id = SVGA_3D_CMD_DX_SET_COTABLE; | |
185 | cmd->header.size = sizeof(cmd->body); | |
186 | cmd->body.cid = vcotbl->ctx->id; | |
187 | cmd->body.type = vcotbl->type; | |
188 | cmd->body.mobid = bo->mem.start; | |
189 | cmd->body.validSizeInBytes = vcotbl->size_read_back; | |
190 | ||
191 | vmw_fifo_commit_flush(dev_priv, sizeof(*cmd)); | |
192 | vcotbl->scrubbed = false; | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | /** | |
198 | * vmw_cotable_bind - Undo a cotable unscrub operation | |
199 | * | |
200 | * @res: Pointer to the cotable resource | |
201 | * @val_buf: Pointer to a struct ttm_validate_buffer prepared by the caller | |
202 | * for convenience / fencing. | |
203 | * | |
204 | * This function issues commands to (re)bind the cotable to | |
205 | * its backing mob, which needs to be validated and reserved at this point. | |
206 | */ | |
207 | static int vmw_cotable_bind(struct vmw_resource *res, | |
208 | struct ttm_validate_buffer *val_buf) | |
209 | { | |
210 | /* | |
211 | * The create() callback may have changed @res->backup without | |
212 | * the caller noticing, and with val_buf->bo still pointing to | |
213 | * the old backup buffer. Although hackish, and not used currently, | |
214 | * take the opportunity to correct the value here so that it's not | |
215 | * misused in the future. | |
216 | */ | |
217 | val_buf->bo = &res->backup->base; | |
218 | ||
219 | return vmw_cotable_unscrub(res); | |
220 | } | |
221 | ||
222 | /** | |
223 | * vmw_cotable_scrub - Scrub the cotable from the device. | |
224 | * | |
225 | * @res: Pointer to the cotable resource. | |
226 | * @readback: Whether initiate a readback of the cotable data to the backup | |
227 | * buffer. | |
228 | * | |
229 | * In some situations (context swapouts) it might be desirable to make the | |
230 | * device forget about the cotable without performing a full unbind. A full | |
231 | * unbind requires reserved backup buffers and it might not be possible to | |
232 | * reserve them due to locking order violation issues. The vmw_cotable_scrub | |
233 | * function implements a partial unbind() without that requirement but with the | |
234 | * following restrictions. | |
235 | * 1) Before the cotable is again used by the GPU, vmw_cotable_unscrub() must | |
236 | * be called. | |
237 | * 2) Before the cotable backing buffer is used by the CPU, or during the | |
238 | * resource destruction, vmw_cotable_unbind() must be called. | |
239 | */ | |
240 | int vmw_cotable_scrub(struct vmw_resource *res, bool readback) | |
241 | { | |
242 | struct vmw_cotable *vcotbl = vmw_cotable(res); | |
243 | struct vmw_private *dev_priv = res->dev_priv; | |
244 | size_t submit_size; | |
245 | ||
246 | struct { | |
247 | SVGA3dCmdHeader header; | |
248 | SVGA3dCmdDXReadbackCOTable body; | |
249 | } *cmd0; | |
250 | struct { | |
251 | SVGA3dCmdHeader header; | |
252 | SVGA3dCmdDXSetCOTable body; | |
253 | } *cmd1; | |
254 | ||
255 | if (vcotbl->scrubbed) | |
256 | return 0; | |
257 | ||
258 | if (co_info[vcotbl->type].unbind_func) | |
259 | co_info[vcotbl->type].unbind_func(dev_priv, | |
260 | &vcotbl->resource_list, | |
261 | readback); | |
262 | submit_size = sizeof(*cmd1); | |
263 | if (readback) | |
264 | submit_size += sizeof(*cmd0); | |
265 | ||
11c45419 DR |
266 | cmd1 = VMW_FIFO_RESERVE(dev_priv, submit_size); |
267 | if (!cmd1) | |
d80efd5c | 268 | return -ENOMEM; |
d80efd5c TH |
269 | |
270 | vcotbl->size_read_back = 0; | |
271 | if (readback) { | |
272 | cmd0 = (void *) cmd1; | |
273 | cmd0->header.id = SVGA_3D_CMD_DX_READBACK_COTABLE; | |
274 | cmd0->header.size = sizeof(cmd0->body); | |
275 | cmd0->body.cid = vcotbl->ctx->id; | |
276 | cmd0->body.type = vcotbl->type; | |
277 | cmd1 = (void *) &cmd0[1]; | |
278 | vcotbl->size_read_back = res->backup_size; | |
279 | } | |
280 | cmd1->header.id = SVGA_3D_CMD_DX_SET_COTABLE; | |
281 | cmd1->header.size = sizeof(cmd1->body); | |
282 | cmd1->body.cid = vcotbl->ctx->id; | |
283 | cmd1->body.type = vcotbl->type; | |
284 | cmd1->body.mobid = SVGA3D_INVALID_ID; | |
285 | cmd1->body.validSizeInBytes = 0; | |
286 | vmw_fifo_commit_flush(dev_priv, submit_size); | |
287 | vcotbl->scrubbed = true; | |
288 | ||
289 | /* Trigger a create() on next validate. */ | |
290 | res->id = -1; | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | /** | |
296 | * vmw_cotable_unbind - Cotable resource unbind callback | |
297 | * | |
298 | * @res: Pointer to the cotable resource. | |
299 | * @readback: Whether to read back cotable data to the backup buffer. | |
300 | * val_buf: Pointer to a struct ttm_validate_buffer prepared by the caller | |
301 | * for convenience / fencing. | |
302 | * | |
303 | * Unbinds the cotable from the device and fences the backup buffer. | |
304 | */ | |
305 | static int vmw_cotable_unbind(struct vmw_resource *res, | |
306 | bool readback, | |
307 | struct ttm_validate_buffer *val_buf) | |
308 | { | |
309 | struct vmw_cotable *vcotbl = vmw_cotable(res); | |
310 | struct vmw_private *dev_priv = res->dev_priv; | |
311 | struct ttm_buffer_object *bo = val_buf->bo; | |
312 | struct vmw_fence_obj *fence; | |
d80efd5c | 313 | |
a0a63940 | 314 | if (!vmw_resource_mob_attached(res)) |
d80efd5c TH |
315 | return 0; |
316 | ||
317 | WARN_ON_ONCE(bo->mem.mem_type != VMW_PL_MOB); | |
52791eee | 318 | dma_resv_assert_held(bo->base.resv); |
d80efd5c TH |
319 | |
320 | mutex_lock(&dev_priv->binding_mutex); | |
321 | if (!vcotbl->scrubbed) | |
322 | vmw_dx_context_scrub_cotables(vcotbl->ctx, readback); | |
323 | mutex_unlock(&dev_priv->binding_mutex); | |
324 | (void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL); | |
e9431ea5 | 325 | vmw_bo_fence_single(bo, fence); |
d80efd5c TH |
326 | if (likely(fence != NULL)) |
327 | vmw_fence_obj_unreference(&fence); | |
328 | ||
49558b47 | 329 | return 0; |
d80efd5c TH |
330 | } |
331 | ||
332 | /** | |
333 | * vmw_cotable_readback - Read back a cotable without unbinding. | |
334 | * | |
335 | * @res: The cotable resource. | |
336 | * | |
337 | * Reads back a cotable to its backing mob without scrubbing the MOB from | |
338 | * the cotable. The MOB is fenced for subsequent CPU access. | |
339 | */ | |
340 | static int vmw_cotable_readback(struct vmw_resource *res) | |
341 | { | |
342 | struct vmw_cotable *vcotbl = vmw_cotable(res); | |
343 | struct vmw_private *dev_priv = res->dev_priv; | |
344 | ||
345 | struct { | |
346 | SVGA3dCmdHeader header; | |
347 | SVGA3dCmdDXReadbackCOTable body; | |
348 | } *cmd; | |
349 | struct vmw_fence_obj *fence; | |
350 | ||
351 | if (!vcotbl->scrubbed) { | |
11c45419 DR |
352 | cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd)); |
353 | if (!cmd) | |
d80efd5c | 354 | return -ENOMEM; |
11c45419 | 355 | |
d80efd5c TH |
356 | cmd->header.id = SVGA_3D_CMD_DX_READBACK_COTABLE; |
357 | cmd->header.size = sizeof(cmd->body); | |
358 | cmd->body.cid = vcotbl->ctx->id; | |
359 | cmd->body.type = vcotbl->type; | |
360 | vcotbl->size_read_back = res->backup_size; | |
361 | vmw_fifo_commit(dev_priv, sizeof(*cmd)); | |
362 | } | |
363 | ||
364 | (void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL); | |
e9431ea5 | 365 | vmw_bo_fence_single(&res->backup->base, fence); |
d80efd5c TH |
366 | vmw_fence_obj_unreference(&fence); |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
371 | /** | |
372 | * vmw_cotable_resize - Resize a cotable. | |
373 | * | |
374 | * @res: The cotable resource. | |
375 | * @new_size: The new size. | |
376 | * | |
377 | * Resizes a cotable and binds the new backup buffer. | |
378 | * On failure the cotable is left intact. | |
379 | * Important! This function may not fail once the MOB switch has been | |
380 | * committed to hardware. That would put the device context in an | |
381 | * invalid state which we can't currently recover from. | |
382 | */ | |
383 | static int vmw_cotable_resize(struct vmw_resource *res, size_t new_size) | |
384 | { | |
19be5570 | 385 | struct ttm_operation_ctx ctx = { false, false }; |
d80efd5c TH |
386 | struct vmw_private *dev_priv = res->dev_priv; |
387 | struct vmw_cotable *vcotbl = vmw_cotable(res); | |
f1d34bfd | 388 | struct vmw_buffer_object *buf, *old_buf = res->backup; |
d80efd5c TH |
389 | struct ttm_buffer_object *bo, *old_bo = &res->backup->base; |
390 | size_t old_size = res->backup_size; | |
391 | size_t old_size_read_back = vcotbl->size_read_back; | |
392 | size_t cur_size_read_back; | |
393 | struct ttm_bo_kmap_obj old_map, new_map; | |
394 | int ret; | |
395 | size_t i; | |
396 | ||
397 | ret = vmw_cotable_readback(res); | |
398 | if (ret) | |
399 | return ret; | |
400 | ||
401 | cur_size_read_back = vcotbl->size_read_back; | |
402 | vcotbl->size_read_back = old_size_read_back; | |
403 | ||
404 | /* | |
405 | * While device is processing, Allocate and reserve a buffer object | |
406 | * for the new COTable. Initially pin the buffer object to make sure | |
407 | * we can use tryreserve without failure. | |
408 | */ | |
409 | buf = kzalloc(sizeof(*buf), GFP_KERNEL); | |
410 | if (!buf) | |
411 | return -ENOMEM; | |
412 | ||
fbe86ca5 CK |
413 | ret = vmw_bo_init(dev_priv, buf, new_size, &vmw_mob_placement, |
414 | true, true, vmw_bo_bo_free); | |
d80efd5c TH |
415 | if (ret) { |
416 | DRM_ERROR("Failed initializing new cotable MOB.\n"); | |
417 | return ret; | |
418 | } | |
419 | ||
420 | bo = &buf->base; | |
dfd5e50e | 421 | WARN_ON_ONCE(ttm_bo_reserve(bo, false, true, NULL)); |
d80efd5c | 422 | |
8aa6d4fc | 423 | ret = ttm_bo_wait(old_bo, false, false); |
d80efd5c TH |
424 | if (unlikely(ret != 0)) { |
425 | DRM_ERROR("Failed waiting for cotable unbind.\n"); | |
426 | goto out_wait; | |
427 | } | |
428 | ||
429 | /* | |
430 | * Do a page by page copy of COTables. This eliminates slow vmap()s. | |
431 | * This should really be a TTM utility. | |
432 | */ | |
433 | for (i = 0; i < old_bo->num_pages; ++i) { | |
434 | bool dummy; | |
435 | ||
436 | ret = ttm_bo_kmap(old_bo, i, 1, &old_map); | |
437 | if (unlikely(ret != 0)) { | |
438 | DRM_ERROR("Failed mapping old COTable on resize.\n"); | |
439 | goto out_wait; | |
440 | } | |
441 | ret = ttm_bo_kmap(bo, i, 1, &new_map); | |
442 | if (unlikely(ret != 0)) { | |
443 | DRM_ERROR("Failed mapping new COTable on resize.\n"); | |
444 | goto out_map_new; | |
445 | } | |
446 | memcpy(ttm_kmap_obj_virtual(&new_map, &dummy), | |
447 | ttm_kmap_obj_virtual(&old_map, &dummy), | |
448 | PAGE_SIZE); | |
449 | ttm_bo_kunmap(&new_map); | |
450 | ttm_bo_kunmap(&old_map); | |
451 | } | |
452 | ||
453 | /* Unpin new buffer, and switch backup buffers. */ | |
19be5570 | 454 | ret = ttm_bo_validate(bo, &vmw_mob_placement, &ctx); |
d80efd5c TH |
455 | if (unlikely(ret != 0)) { |
456 | DRM_ERROR("Failed validating new COTable backup buffer.\n"); | |
457 | goto out_wait; | |
458 | } | |
459 | ||
a0a63940 | 460 | vmw_resource_mob_detach(res); |
d80efd5c TH |
461 | res->backup = buf; |
462 | res->backup_size = new_size; | |
463 | vcotbl->size_read_back = cur_size_read_back; | |
464 | ||
465 | /* | |
466 | * Now tell the device to switch. If this fails, then we need to | |
467 | * revert the full resize. | |
468 | */ | |
469 | ret = vmw_cotable_unscrub(res); | |
470 | if (ret) { | |
471 | DRM_ERROR("Failed switching COTable backup buffer.\n"); | |
472 | res->backup = old_buf; | |
473 | res->backup_size = old_size; | |
474 | vcotbl->size_read_back = old_size_read_back; | |
a0a63940 | 475 | vmw_resource_mob_attach(res); |
d80efd5c TH |
476 | goto out_wait; |
477 | } | |
478 | ||
a0a63940 | 479 | vmw_resource_mob_attach(res); |
d80efd5c | 480 | /* Let go of the old mob. */ |
f1d34bfd | 481 | vmw_bo_unreference(&old_buf); |
d80efd5c TH |
482 | res->id = vcotbl->type; |
483 | ||
484 | return 0; | |
485 | ||
486 | out_map_new: | |
487 | ttm_bo_kunmap(&old_map); | |
488 | out_wait: | |
489 | ttm_bo_unreserve(bo); | |
f1d34bfd | 490 | vmw_bo_unreference(&buf); |
d80efd5c TH |
491 | |
492 | return ret; | |
493 | } | |
494 | ||
495 | /** | |
496 | * vmw_cotable_create - Cotable resource create callback | |
497 | * | |
498 | * @res: Pointer to a cotable resource. | |
499 | * | |
500 | * There is no separate create command for cotables, so this callback, which | |
501 | * is called before bind() in the validation sequence is instead used for two | |
502 | * things. | |
503 | * 1) Unscrub the cotable if it is scrubbed and still attached to a backup | |
a0a63940 | 504 | * buffer. |
d80efd5c TH |
505 | * 2) Resize the cotable if needed. |
506 | */ | |
507 | static int vmw_cotable_create(struct vmw_resource *res) | |
508 | { | |
509 | struct vmw_cotable *vcotbl = vmw_cotable(res); | |
510 | size_t new_size = res->backup_size; | |
511 | size_t needed_size; | |
512 | int ret; | |
513 | ||
514 | /* Check whether we need to resize the cotable */ | |
515 | needed_size = (vcotbl->seen_entries + 1) * co_info[vcotbl->type].size; | |
516 | while (needed_size > new_size) | |
517 | new_size *= 2; | |
518 | ||
519 | if (likely(new_size <= res->backup_size)) { | |
a0a63940 | 520 | if (vcotbl->scrubbed && vmw_resource_mob_attached(res)) { |
d80efd5c TH |
521 | ret = vmw_cotable_unscrub(res); |
522 | if (ret) | |
523 | return ret; | |
524 | } | |
525 | res->id = vcotbl->type; | |
526 | return 0; | |
527 | } | |
528 | ||
529 | return vmw_cotable_resize(res, new_size); | |
530 | } | |
531 | ||
532 | /** | |
533 | * vmw_hw_cotable_destroy - Cotable hw_destroy callback | |
534 | * | |
535 | * @res: Pointer to a cotable resource. | |
536 | * | |
537 | * The final (part of resource destruction) destroy callback. | |
538 | */ | |
539 | static void vmw_hw_cotable_destroy(struct vmw_resource *res) | |
540 | { | |
541 | (void) vmw_cotable_destroy(res); | |
542 | } | |
543 | ||
544 | static size_t cotable_acc_size; | |
545 | ||
546 | /** | |
547 | * vmw_cotable_free - Cotable resource destructor | |
548 | * | |
549 | * @res: Pointer to a cotable resource. | |
550 | */ | |
551 | static void vmw_cotable_free(struct vmw_resource *res) | |
552 | { | |
553 | struct vmw_private *dev_priv = res->dev_priv; | |
554 | ||
555 | kfree(res); | |
556 | ttm_mem_global_free(vmw_mem_glob(dev_priv), cotable_acc_size); | |
557 | } | |
558 | ||
559 | /** | |
560 | * vmw_cotable_alloc - Create a cotable resource | |
561 | * | |
562 | * @dev_priv: Pointer to a device private struct. | |
563 | * @ctx: Pointer to the context resource. | |
564 | * The cotable resource will not add a refcount. | |
565 | * @type: The cotable type. | |
566 | */ | |
567 | struct vmw_resource *vmw_cotable_alloc(struct vmw_private *dev_priv, | |
568 | struct vmw_resource *ctx, | |
569 | u32 type) | |
570 | { | |
571 | struct vmw_cotable *vcotbl; | |
279c01f6 RH |
572 | struct ttm_operation_ctx ttm_opt_ctx = { |
573 | .interruptible = true, | |
574 | .no_wait_gpu = false | |
575 | }; | |
d80efd5c TH |
576 | int ret; |
577 | u32 num_entries; | |
578 | ||
579 | if (unlikely(cotable_acc_size == 0)) | |
580 | cotable_acc_size = ttm_round_pot(sizeof(struct vmw_cotable)); | |
581 | ||
582 | ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv), | |
279c01f6 | 583 | cotable_acc_size, &ttm_opt_ctx); |
d80efd5c TH |
584 | if (unlikely(ret)) |
585 | return ERR_PTR(ret); | |
586 | ||
587 | vcotbl = kzalloc(sizeof(*vcotbl), GFP_KERNEL); | |
1a4adb05 | 588 | if (unlikely(!vcotbl)) { |
d80efd5c TH |
589 | ret = -ENOMEM; |
590 | goto out_no_alloc; | |
591 | } | |
592 | ||
593 | ret = vmw_resource_init(dev_priv, &vcotbl->res, true, | |
594 | vmw_cotable_free, &vmw_cotable_func); | |
595 | if (unlikely(ret != 0)) | |
596 | goto out_no_init; | |
597 | ||
598 | INIT_LIST_HEAD(&vcotbl->resource_list); | |
599 | vcotbl->res.id = type; | |
600 | vcotbl->res.backup_size = PAGE_SIZE; | |
601 | num_entries = PAGE_SIZE / co_info[type].size; | |
602 | if (num_entries < co_info[type].min_initial_entries) { | |
603 | vcotbl->res.backup_size = co_info[type].min_initial_entries * | |
604 | co_info[type].size; | |
605 | vcotbl->res.backup_size = | |
606 | (vcotbl->res.backup_size + PAGE_SIZE - 1) & PAGE_MASK; | |
607 | } | |
608 | ||
609 | vcotbl->scrubbed = true; | |
610 | vcotbl->seen_entries = -1; | |
611 | vcotbl->type = type; | |
612 | vcotbl->ctx = ctx; | |
613 | ||
13289241 | 614 | vcotbl->res.hw_destroy = vmw_hw_cotable_destroy; |
d80efd5c TH |
615 | |
616 | return &vcotbl->res; | |
617 | ||
618 | out_no_init: | |
619 | kfree(vcotbl); | |
620 | out_no_alloc: | |
621 | ttm_mem_global_free(vmw_mem_glob(dev_priv), cotable_acc_size); | |
622 | return ERR_PTR(ret); | |
623 | } | |
624 | ||
625 | /** | |
626 | * vmw_cotable_notify - Notify the cotable about an item creation | |
627 | * | |
628 | * @res: Pointer to a cotable resource. | |
629 | * @id: Item id. | |
630 | */ | |
631 | int vmw_cotable_notify(struct vmw_resource *res, int id) | |
632 | { | |
633 | struct vmw_cotable *vcotbl = vmw_cotable(res); | |
634 | ||
635 | if (id < 0 || id >= SVGA_COTABLE_MAX_IDS) { | |
636 | DRM_ERROR("Illegal COTable id. Type is %u. Id is %d\n", | |
637 | (unsigned) vcotbl->type, id); | |
638 | return -EINVAL; | |
639 | } | |
640 | ||
641 | if (vcotbl->seen_entries < id) { | |
642 | /* Trigger a call to create() on next validate */ | |
643 | res->id = -1; | |
644 | vcotbl->seen_entries = id; | |
645 | } | |
646 | ||
647 | return 0; | |
648 | } | |
649 | ||
650 | /** | |
651 | * vmw_cotable_add_view - add a view to the cotable's list of active views. | |
652 | * | |
653 | * @res: pointer struct vmw_resource representing the cotable. | |
654 | * @head: pointer to the struct list_head member of the resource, dedicated | |
655 | * to the cotable active resource list. | |
656 | */ | |
657 | void vmw_cotable_add_resource(struct vmw_resource *res, struct list_head *head) | |
658 | { | |
659 | struct vmw_cotable *vcotbl = | |
660 | container_of(res, struct vmw_cotable, res); | |
661 | ||
662 | list_add_tail(head, &vcotbl->resource_list); | |
663 | } |