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1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/**************************************************************************
3 *
4 * Copyright 2015 VMware, Inc., Palo Alto, CA., USA
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 * This file implements the vmwgfx context binding manager,
29 * The sole reason for having to use this code is that vmware guest
30 * backed contexts can be swapped out to their backing mobs by the device
31 * at any time, also swapped in at any time. At swapin time, the device
32 * validates the context bindings to make sure they point to valid resources.
33 * It's this outside-of-drawcall validation (that can happen at any time),
34 * that makes this code necessary.
35 *
36 * We therefore need to kill any context bindings pointing to a resource
37 * when the resource is swapped out. Furthermore, if the vmwgfx driver has
38 * swapped out the context we can't swap it in again to kill bindings because
39 * of backing mob reservation lockdep violations, so as part of
40 * context swapout, also kill all bindings of a context, so that they are
41 * already killed if a resource to which a binding points
42 * needs to be swapped out.
43 *
44 * Note that a resource can be pointed to by bindings from multiple contexts,
45 * Therefore we can't easily protect this data by a per context mutex
46 * (unless we use deadlock-safe WW mutexes). So we use a global binding_mutex
47 * to protect all binding manager data.
48 *
49 * Finally, any association between a context and a global resource
50 * (surface, shader or even DX query) is conceptually a context binding that
51 * needs to be tracked by this code.
52 */
53
54#include "vmwgfx_drv.h"
55#include "vmwgfx_binding.h"
56#include "device_include/svga3d_reg.h"
57
58#define VMW_BINDING_RT_BIT 0
59#define VMW_BINDING_PS_BIT 1
60#define VMW_BINDING_SO_BIT 2
61#define VMW_BINDING_VB_BIT 3
62#define VMW_BINDING_NUM_BITS 4
63
64#define VMW_BINDING_PS_SR_BIT 0
65
66/**
67 * struct vmw_ctx_binding_state - per context binding state
68 *
69 * @dev_priv: Pointer to device private structure.
70 * @list: linked list of individual active bindings.
71 * @render_targets: Render target bindings.
72 * @texture_units: Texture units bindings.
73 * @ds_view: Depth-stencil view binding.
74 * @so_targets: StreamOutput target bindings.
75 * @vertex_buffers: Vertex buffer bindings.
76 * @index_buffer: Index buffer binding.
77 * @per_shader: Per shader-type bindings.
78 * @dirty: Bitmap tracking per binding-type changes that have not yet
79 * been emitted to the device.
80 * @dirty_vb: Bitmap tracking individual vertex buffer binding changes that
81 * have not yet been emitted to the device.
82 * @bind_cmd_buffer: Scratch space used to construct binding commands.
83 * @bind_cmd_count: Number of binding command data entries in @bind_cmd_buffer
84 * @bind_first_slot: Used together with @bind_cmd_buffer to indicate the
85 * device binding slot of the first command data entry in @bind_cmd_buffer.
86 *
87 * Note that this structure also provides storage space for the individual
88 * struct vmw_ctx_binding objects, so that no dynamic allocation is needed
89 * for individual bindings.
90 *
91 */
92struct vmw_ctx_binding_state {
93 struct vmw_private *dev_priv;
94 struct list_head list;
95 struct vmw_ctx_bindinfo_view render_targets[SVGA3D_RT_MAX];
96 struct vmw_ctx_bindinfo_tex texture_units[SVGA3D_NUM_TEXTURE_UNITS];
97 struct vmw_ctx_bindinfo_view ds_view;
98 struct vmw_ctx_bindinfo_so so_targets[SVGA3D_DX_MAX_SOTARGETS];
99 struct vmw_ctx_bindinfo_vb vertex_buffers[SVGA3D_DX_MAX_VERTEXBUFFERS];
100 struct vmw_ctx_bindinfo_ib index_buffer;
101 struct vmw_dx_shader_bindings per_shader[SVGA3D_NUM_SHADERTYPE_DX10];
102
103 unsigned long dirty;
104 DECLARE_BITMAP(dirty_vb, SVGA3D_DX_MAX_VERTEXBUFFERS);
105
106 u32 bind_cmd_buffer[VMW_MAX_VIEW_BINDINGS];
107 u32 bind_cmd_count;
108 u32 bind_first_slot;
109};
110
111static int vmw_binding_scrub_shader(struct vmw_ctx_bindinfo *bi, bool rebind);
112static int vmw_binding_scrub_render_target(struct vmw_ctx_bindinfo *bi,
113 bool rebind);
114static int vmw_binding_scrub_texture(struct vmw_ctx_bindinfo *bi, bool rebind);
115static int vmw_binding_scrub_cb(struct vmw_ctx_bindinfo *bi, bool rebind);
116static int vmw_binding_scrub_dx_rt(struct vmw_ctx_bindinfo *bi, bool rebind);
117static int vmw_binding_scrub_sr(struct vmw_ctx_bindinfo *bi, bool rebind);
118static int vmw_binding_scrub_so(struct vmw_ctx_bindinfo *bi, bool rebind);
119static int vmw_binding_emit_dirty(struct vmw_ctx_binding_state *cbs);
120static int vmw_binding_scrub_dx_shader(struct vmw_ctx_bindinfo *bi,
121 bool rebind);
122static int vmw_binding_scrub_ib(struct vmw_ctx_bindinfo *bi, bool rebind);
123static int vmw_binding_scrub_vb(struct vmw_ctx_bindinfo *bi, bool rebind);
124static void vmw_binding_build_asserts(void) __attribute__ ((unused));
125
126typedef int (*vmw_scrub_func)(struct vmw_ctx_bindinfo *, bool);
127
128/**
129 * struct vmw_binding_info - Per binding type information for the binding
130 * manager
131 *
132 * @size: The size of the struct binding derived from a struct vmw_ctx_bindinfo.
133 * @offsets: array[shader_slot] of offsets to the array[slot]
134 * of struct bindings for the binding type.
135 * @scrub_func: Pointer to the scrub function for this binding type.
136 *
137 * Holds static information to help optimize the binding manager and avoid
138 * an excessive amount of switch statements.
139 */
140struct vmw_binding_info {
141 size_t size;
142 const size_t *offsets;
143 vmw_scrub_func scrub_func;
144};
145
146/*
147 * A number of static variables that help determine the scrub func and the
148 * location of the struct vmw_ctx_bindinfo slots for each binding type.
149 */
150static const size_t vmw_binding_shader_offsets[] = {
151 offsetof(struct vmw_ctx_binding_state, per_shader[0].shader),
152 offsetof(struct vmw_ctx_binding_state, per_shader[1].shader),
153 offsetof(struct vmw_ctx_binding_state, per_shader[2].shader),
154};
155static const size_t vmw_binding_rt_offsets[] = {
156 offsetof(struct vmw_ctx_binding_state, render_targets),
157};
158static const size_t vmw_binding_tex_offsets[] = {
159 offsetof(struct vmw_ctx_binding_state, texture_units),
160};
161static const size_t vmw_binding_cb_offsets[] = {
162 offsetof(struct vmw_ctx_binding_state, per_shader[0].const_buffers),
163 offsetof(struct vmw_ctx_binding_state, per_shader[1].const_buffers),
164 offsetof(struct vmw_ctx_binding_state, per_shader[2].const_buffers),
165};
166static const size_t vmw_binding_dx_ds_offsets[] = {
167 offsetof(struct vmw_ctx_binding_state, ds_view),
168};
169static const size_t vmw_binding_sr_offsets[] = {
170 offsetof(struct vmw_ctx_binding_state, per_shader[0].shader_res),
171 offsetof(struct vmw_ctx_binding_state, per_shader[1].shader_res),
172 offsetof(struct vmw_ctx_binding_state, per_shader[2].shader_res),
173};
174static const size_t vmw_binding_so_offsets[] = {
175 offsetof(struct vmw_ctx_binding_state, so_targets),
176};
177static const size_t vmw_binding_vb_offsets[] = {
178 offsetof(struct vmw_ctx_binding_state, vertex_buffers),
179};
180static const size_t vmw_binding_ib_offsets[] = {
181 offsetof(struct vmw_ctx_binding_state, index_buffer),
182};
183
184static const struct vmw_binding_info vmw_binding_infos[] = {
185 [vmw_ctx_binding_shader] = {
186 .size = sizeof(struct vmw_ctx_bindinfo_shader),
187 .offsets = vmw_binding_shader_offsets,
188 .scrub_func = vmw_binding_scrub_shader},
189 [vmw_ctx_binding_rt] = {
190 .size = sizeof(struct vmw_ctx_bindinfo_view),
191 .offsets = vmw_binding_rt_offsets,
192 .scrub_func = vmw_binding_scrub_render_target},
193 [vmw_ctx_binding_tex] = {
194 .size = sizeof(struct vmw_ctx_bindinfo_tex),
195 .offsets = vmw_binding_tex_offsets,
196 .scrub_func = vmw_binding_scrub_texture},
197 [vmw_ctx_binding_cb] = {
198 .size = sizeof(struct vmw_ctx_bindinfo_cb),
199 .offsets = vmw_binding_cb_offsets,
200 .scrub_func = vmw_binding_scrub_cb},
201 [vmw_ctx_binding_dx_shader] = {
202 .size = sizeof(struct vmw_ctx_bindinfo_shader),
203 .offsets = vmw_binding_shader_offsets,
204 .scrub_func = vmw_binding_scrub_dx_shader},
205 [vmw_ctx_binding_dx_rt] = {
206 .size = sizeof(struct vmw_ctx_bindinfo_view),
207 .offsets = vmw_binding_rt_offsets,
208 .scrub_func = vmw_binding_scrub_dx_rt},
209 [vmw_ctx_binding_sr] = {
210 .size = sizeof(struct vmw_ctx_bindinfo_view),
211 .offsets = vmw_binding_sr_offsets,
212 .scrub_func = vmw_binding_scrub_sr},
213 [vmw_ctx_binding_ds] = {
214 .size = sizeof(struct vmw_ctx_bindinfo_view),
215 .offsets = vmw_binding_dx_ds_offsets,
216 .scrub_func = vmw_binding_scrub_dx_rt},
217 [vmw_ctx_binding_so] = {
218 .size = sizeof(struct vmw_ctx_bindinfo_so),
219 .offsets = vmw_binding_so_offsets,
220 .scrub_func = vmw_binding_scrub_so},
221 [vmw_ctx_binding_vb] = {
222 .size = sizeof(struct vmw_ctx_bindinfo_vb),
223 .offsets = vmw_binding_vb_offsets,
224 .scrub_func = vmw_binding_scrub_vb},
225 [vmw_ctx_binding_ib] = {
226 .size = sizeof(struct vmw_ctx_bindinfo_ib),
227 .offsets = vmw_binding_ib_offsets,
228 .scrub_func = vmw_binding_scrub_ib},
229};
230
231/**
232 * vmw_cbs_context - Return a pointer to the context resource of a
233 * context binding state tracker.
234 *
235 * @cbs: The context binding state tracker.
236 *
237 * Provided there are any active bindings, this function will return an
238 * unreferenced pointer to the context resource that owns the context
239 * binding state tracker. If there are no active bindings, this function
240 * will return NULL. Note that the caller must somehow ensure that a reference
241 * is held on the context resource prior to calling this function.
242 */
243static const struct vmw_resource *
244vmw_cbs_context(const struct vmw_ctx_binding_state *cbs)
245{
246 if (list_empty(&cbs->list))
247 return NULL;
248
249 return list_first_entry(&cbs->list, struct vmw_ctx_bindinfo,
250 ctx_list)->ctx;
251}
252
253/**
254 * vmw_binding_loc - determine the struct vmw_ctx_bindinfo slot location.
255 *
256 * @cbs: Pointer to a struct vmw_ctx_binding state which holds the slot.
257 * @bt: The binding type.
258 * @shader_slot: The shader slot of the binding. If none, then set to 0.
259 * @slot: The slot of the binding.
260 */
261static struct vmw_ctx_bindinfo *
262vmw_binding_loc(struct vmw_ctx_binding_state *cbs,
263 enum vmw_ctx_binding_type bt, u32 shader_slot, u32 slot)
264{
265 const struct vmw_binding_info *b = &vmw_binding_infos[bt];
266 size_t offset = b->offsets[shader_slot] + b->size*slot;
267
268 return (struct vmw_ctx_bindinfo *)((u8 *) cbs + offset);
269}
270
271/**
272 * vmw_binding_drop: Stop tracking a context binding
273 *
274 * @bi: Pointer to binding tracker storage.
275 *
276 * Stops tracking a context binding, and re-initializes its storage.
277 * Typically used when the context binding is replaced with a binding to
278 * another (or the same, for that matter) resource.
279 */
280static void vmw_binding_drop(struct vmw_ctx_bindinfo *bi)
281{
282 list_del(&bi->ctx_list);
283 if (!list_empty(&bi->res_list))
284 list_del(&bi->res_list);
285 bi->ctx = NULL;
286}
287
288/**
289 * vmw_binding_add: Start tracking a context binding
290 *
291 * @cbs: Pointer to the context binding state tracker.
292 * @bi: Information about the binding to track.
293 *
294 * Starts tracking the binding in the context binding
295 * state structure @cbs.
296 */
297void vmw_binding_add(struct vmw_ctx_binding_state *cbs,
298 const struct vmw_ctx_bindinfo *bi,
299 u32 shader_slot, u32 slot)
300{
301 struct vmw_ctx_bindinfo *loc =
302 vmw_binding_loc(cbs, bi->bt, shader_slot, slot);
303 const struct vmw_binding_info *b = &vmw_binding_infos[bi->bt];
304
305 if (loc->ctx != NULL)
306 vmw_binding_drop(loc);
307
308 memcpy(loc, bi, b->size);
309 loc->scrubbed = false;
310 list_add(&loc->ctx_list, &cbs->list);
311 INIT_LIST_HEAD(&loc->res_list);
312}
313
314/**
315 * vmw_binding_transfer: Transfer a context binding tracking entry.
316 *
317 * @cbs: Pointer to the persistent context binding state tracker.
318 * @bi: Information about the binding to track.
319 *
320 */
321static void vmw_binding_transfer(struct vmw_ctx_binding_state *cbs,
322 const struct vmw_ctx_binding_state *from,
323 const struct vmw_ctx_bindinfo *bi)
324{
325 size_t offset = (unsigned long)bi - (unsigned long)from;
326 struct vmw_ctx_bindinfo *loc = (struct vmw_ctx_bindinfo *)
327 ((unsigned long) cbs + offset);
328
329 if (loc->ctx != NULL) {
330 WARN_ON(bi->scrubbed);
331
332 vmw_binding_drop(loc);
333 }
334
335 if (bi->res != NULL) {
336 memcpy(loc, bi, vmw_binding_infos[bi->bt].size);
337 list_add_tail(&loc->ctx_list, &cbs->list);
338 list_add_tail(&loc->res_list, &loc->res->binding_head);
339 }
340}
341
342/**
343 * vmw_binding_state_kill - Kill all bindings associated with a
344 * struct vmw_ctx_binding state structure, and re-initialize the structure.
345 *
346 * @cbs: Pointer to the context binding state tracker.
347 *
348 * Emits commands to scrub all bindings associated with the
349 * context binding state tracker. Then re-initializes the whole structure.
350 */
351void vmw_binding_state_kill(struct vmw_ctx_binding_state *cbs)
352{
353 struct vmw_ctx_bindinfo *entry, *next;
354
355 vmw_binding_state_scrub(cbs);
356 list_for_each_entry_safe(entry, next, &cbs->list, ctx_list)
357 vmw_binding_drop(entry);
358}
359
360/**
361 * vmw_binding_state_scrub - Scrub all bindings associated with a
362 * struct vmw_ctx_binding state structure.
363 *
364 * @cbs: Pointer to the context binding state tracker.
365 *
366 * Emits commands to scrub all bindings associated with the
367 * context binding state tracker.
368 */
369void vmw_binding_state_scrub(struct vmw_ctx_binding_state *cbs)
370{
371 struct vmw_ctx_bindinfo *entry;
372
373 list_for_each_entry(entry, &cbs->list, ctx_list) {
374 if (!entry->scrubbed) {
375 (void) vmw_binding_infos[entry->bt].scrub_func
376 (entry, false);
377 entry->scrubbed = true;
378 }
379 }
380
381 (void) vmw_binding_emit_dirty(cbs);
382}
383
384/**
385 * vmw_binding_res_list_kill - Kill all bindings on a
386 * resource binding list
387 *
388 * @head: list head of resource binding list
389 *
390 * Kills all bindings associated with a specific resource. Typically
391 * called before the resource is destroyed.
392 */
393void vmw_binding_res_list_kill(struct list_head *head)
394{
395 struct vmw_ctx_bindinfo *entry, *next;
396
397 vmw_binding_res_list_scrub(head);
398 list_for_each_entry_safe(entry, next, head, res_list)
399 vmw_binding_drop(entry);
400}
401
402/**
403 * vmw_binding_res_list_scrub - Scrub all bindings on a
404 * resource binding list
405 *
406 * @head: list head of resource binding list
407 *
408 * Scrub all bindings associated with a specific resource. Typically
409 * called before the resource is evicted.
410 */
411void vmw_binding_res_list_scrub(struct list_head *head)
412{
413 struct vmw_ctx_bindinfo *entry;
414
415 list_for_each_entry(entry, head, res_list) {
416 if (!entry->scrubbed) {
417 (void) vmw_binding_infos[entry->bt].scrub_func
418 (entry, false);
419 entry->scrubbed = true;
420 }
421 }
422
423 list_for_each_entry(entry, head, res_list) {
424 struct vmw_ctx_binding_state *cbs =
425 vmw_context_binding_state(entry->ctx);
426
427 (void) vmw_binding_emit_dirty(cbs);
428 }
429}
430
431
432/**
433 * vmw_binding_state_commit - Commit staged binding info
434 *
435 * @ctx: Pointer to context to commit the staged binding info to.
436 * @from: Staged binding info built during execbuf.
437 * @scrubbed: Transfer only scrubbed bindings.
438 *
439 * Transfers binding info from a temporary structure
440 * (typically used by execbuf) to the persistent
441 * structure in the context. This can be done once commands have been
442 * submitted to hardware
443 */
444void vmw_binding_state_commit(struct vmw_ctx_binding_state *to,
445 struct vmw_ctx_binding_state *from)
446{
447 struct vmw_ctx_bindinfo *entry, *next;
448
449 list_for_each_entry_safe(entry, next, &from->list, ctx_list) {
450 vmw_binding_transfer(to, from, entry);
451 vmw_binding_drop(entry);
452 }
453}
454
455/**
456 * vmw_binding_rebind_all - Rebind all scrubbed bindings of a context
457 *
458 * @ctx: The context resource
459 *
460 * Walks through the context binding list and rebinds all scrubbed
461 * resources.
462 */
463int vmw_binding_rebind_all(struct vmw_ctx_binding_state *cbs)
464{
465 struct vmw_ctx_bindinfo *entry;
466 int ret;
467
468 list_for_each_entry(entry, &cbs->list, ctx_list) {
469 if (likely(!entry->scrubbed))
470 continue;
471
472 if ((entry->res == NULL || entry->res->id ==
473 SVGA3D_INVALID_ID))
474 continue;
475
476 ret = vmw_binding_infos[entry->bt].scrub_func(entry, true);
477 if (unlikely(ret != 0))
478 return ret;
479
480 entry->scrubbed = false;
481 }
482
483 return vmw_binding_emit_dirty(cbs);
484}
485
486/**
487 * vmw_binding_scrub_shader - scrub a shader binding from a context.
488 *
489 * @bi: single binding information.
490 * @rebind: Whether to issue a bind instead of scrub command.
491 */
492static int vmw_binding_scrub_shader(struct vmw_ctx_bindinfo *bi, bool rebind)
493{
494 struct vmw_ctx_bindinfo_shader *binding =
495 container_of(bi, typeof(*binding), bi);
496 struct vmw_private *dev_priv = bi->ctx->dev_priv;
497 struct {
498 SVGA3dCmdHeader header;
499 SVGA3dCmdSetShader body;
500 } *cmd;
501
502 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
503 if (unlikely(cmd == NULL))
504 return -ENOMEM;
505
506 cmd->header.id = SVGA_3D_CMD_SET_SHADER;
507 cmd->header.size = sizeof(cmd->body);
508 cmd->body.cid = bi->ctx->id;
509 cmd->body.type = binding->shader_slot + SVGA3D_SHADERTYPE_MIN;
510 cmd->body.shid = ((rebind) ? bi->res->id : SVGA3D_INVALID_ID);
511 vmw_fifo_commit(dev_priv, sizeof(*cmd));
512
513 return 0;
514}
515
516/**
517 * vmw_binding_scrub_render_target - scrub a render target binding
518 * from a context.
519 *
520 * @bi: single binding information.
521 * @rebind: Whether to issue a bind instead of scrub command.
522 */
523static int vmw_binding_scrub_render_target(struct vmw_ctx_bindinfo *bi,
524 bool rebind)
525{
526 struct vmw_ctx_bindinfo_view *binding =
527 container_of(bi, typeof(*binding), bi);
528 struct vmw_private *dev_priv = bi->ctx->dev_priv;
529 struct {
530 SVGA3dCmdHeader header;
531 SVGA3dCmdSetRenderTarget body;
532 } *cmd;
533
534 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
535 if (unlikely(cmd == NULL))
536 return -ENOMEM;
537
538 cmd->header.id = SVGA_3D_CMD_SETRENDERTARGET;
539 cmd->header.size = sizeof(cmd->body);
540 cmd->body.cid = bi->ctx->id;
541 cmd->body.type = binding->slot;
542 cmd->body.target.sid = ((rebind) ? bi->res->id : SVGA3D_INVALID_ID);
543 cmd->body.target.face = 0;
544 cmd->body.target.mipmap = 0;
545 vmw_fifo_commit(dev_priv, sizeof(*cmd));
546
547 return 0;
548}
549
550/**
551 * vmw_binding_scrub_texture - scrub a texture binding from a context.
552 *
553 * @bi: single binding information.
554 * @rebind: Whether to issue a bind instead of scrub command.
555 *
556 * TODO: Possibly complement this function with a function that takes
557 * a list of texture bindings and combines them to a single command.
558 */
559static int vmw_binding_scrub_texture(struct vmw_ctx_bindinfo *bi,
560 bool rebind)
561{
562 struct vmw_ctx_bindinfo_tex *binding =
563 container_of(bi, typeof(*binding), bi);
564 struct vmw_private *dev_priv = bi->ctx->dev_priv;
565 struct {
566 SVGA3dCmdHeader header;
567 struct {
568 SVGA3dCmdSetTextureState c;
569 SVGA3dTextureState s1;
570 } body;
571 } *cmd;
572
573 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
574 if (unlikely(cmd == NULL))
575 return -ENOMEM;
576
577 cmd->header.id = SVGA_3D_CMD_SETTEXTURESTATE;
578 cmd->header.size = sizeof(cmd->body);
579 cmd->body.c.cid = bi->ctx->id;
580 cmd->body.s1.stage = binding->texture_stage;
581 cmd->body.s1.name = SVGA3D_TS_BIND_TEXTURE;
582 cmd->body.s1.value = ((rebind) ? bi->res->id : SVGA3D_INVALID_ID);
583 vmw_fifo_commit(dev_priv, sizeof(*cmd));
584
585 return 0;
586}
587
588/**
589 * vmw_binding_scrub_dx_shader - scrub a dx shader binding from a context.
590 *
591 * @bi: single binding information.
592 * @rebind: Whether to issue a bind instead of scrub command.
593 */
594static int vmw_binding_scrub_dx_shader(struct vmw_ctx_bindinfo *bi, bool rebind)
595{
596 struct vmw_ctx_bindinfo_shader *binding =
597 container_of(bi, typeof(*binding), bi);
598 struct vmw_private *dev_priv = bi->ctx->dev_priv;
599 struct {
600 SVGA3dCmdHeader header;
601 SVGA3dCmdDXSetShader body;
602 } *cmd;
603
604 cmd = VMW_FIFO_RESERVE_DX(dev_priv, sizeof(*cmd), bi->ctx->id);
605 if (unlikely(cmd == NULL))
606 return -ENOMEM;
607
608 cmd->header.id = SVGA_3D_CMD_DX_SET_SHADER;
609 cmd->header.size = sizeof(cmd->body);
610 cmd->body.type = binding->shader_slot + SVGA3D_SHADERTYPE_MIN;
611 cmd->body.shaderId = ((rebind) ? bi->res->id : SVGA3D_INVALID_ID);
612 vmw_fifo_commit(dev_priv, sizeof(*cmd));
613
614 return 0;
615}
616
617/**
618 * vmw_binding_scrub_cb - scrub a constant buffer binding from a context.
619 *
620 * @bi: single binding information.
621 * @rebind: Whether to issue a bind instead of scrub command.
622 */
623static int vmw_binding_scrub_cb(struct vmw_ctx_bindinfo *bi, bool rebind)
624{
625 struct vmw_ctx_bindinfo_cb *binding =
626 container_of(bi, typeof(*binding), bi);
627 struct vmw_private *dev_priv = bi->ctx->dev_priv;
628 struct {
629 SVGA3dCmdHeader header;
630 SVGA3dCmdDXSetSingleConstantBuffer body;
631 } *cmd;
632
633 cmd = VMW_FIFO_RESERVE_DX(dev_priv, sizeof(*cmd), bi->ctx->id);
634 if (unlikely(cmd == NULL))
635 return -ENOMEM;
636
637 cmd->header.id = SVGA_3D_CMD_DX_SET_SINGLE_CONSTANT_BUFFER;
638 cmd->header.size = sizeof(cmd->body);
639 cmd->body.slot = binding->slot;
640 cmd->body.type = binding->shader_slot + SVGA3D_SHADERTYPE_MIN;
641 if (rebind) {
642 cmd->body.offsetInBytes = binding->offset;
643 cmd->body.sizeInBytes = binding->size;
644 cmd->body.sid = bi->res->id;
645 } else {
646 cmd->body.offsetInBytes = 0;
647 cmd->body.sizeInBytes = 0;
648 cmd->body.sid = SVGA3D_INVALID_ID;
649 }
650 vmw_fifo_commit(dev_priv, sizeof(*cmd));
651
652 return 0;
653}
654
655/**
656 * vmw_collect_view_ids - Build view id data for a view binding command
657 * without checking which bindings actually need to be emitted
658 *
659 * @cbs: Pointer to the context's struct vmw_ctx_binding_state
660 * @bi: Pointer to where the binding info array is stored in @cbs
661 * @max_num: Maximum number of entries in the @bi array.
662 *
663 * Scans the @bi array for bindings and builds a buffer of view id data.
664 * Stops at the first non-existing binding in the @bi array.
665 * On output, @cbs->bind_cmd_count contains the number of bindings to be
666 * emitted, @cbs->bind_first_slot is set to zero, and @cbs->bind_cmd_buffer
667 * contains the command data.
668 */
669static void vmw_collect_view_ids(struct vmw_ctx_binding_state *cbs,
670 const struct vmw_ctx_bindinfo *bi,
671 u32 max_num)
672{
673 const struct vmw_ctx_bindinfo_view *biv =
674 container_of(bi, struct vmw_ctx_bindinfo_view, bi);
675 unsigned long i;
676
677 cbs->bind_cmd_count = 0;
678 cbs->bind_first_slot = 0;
679
680 for (i = 0; i < max_num; ++i, ++biv) {
681 if (!biv->bi.ctx)
682 break;
683
684 cbs->bind_cmd_buffer[cbs->bind_cmd_count++] =
685 ((biv->bi.scrubbed) ?
686 SVGA3D_INVALID_ID : biv->bi.res->id);
687 }
688}
689
690/**
691 * vmw_collect_dirty_view_ids - Build view id data for a view binding command
692 *
693 * @cbs: Pointer to the context's struct vmw_ctx_binding_state
694 * @bi: Pointer to where the binding info array is stored in @cbs
695 * @dirty: Bitmap indicating which bindings need to be emitted.
696 * @max_num: Maximum number of entries in the @bi array.
697 *
698 * Scans the @bi array for bindings that need to be emitted and
699 * builds a buffer of view id data.
700 * On output, @cbs->bind_cmd_count contains the number of bindings to be
701 * emitted, @cbs->bind_first_slot indicates the index of the first emitted
702 * binding, and @cbs->bind_cmd_buffer contains the command data.
703 */
704static void vmw_collect_dirty_view_ids(struct vmw_ctx_binding_state *cbs,
705 const struct vmw_ctx_bindinfo *bi,
706 unsigned long *dirty,
707 u32 max_num)
708{
709 const struct vmw_ctx_bindinfo_view *biv =
710 container_of(bi, struct vmw_ctx_bindinfo_view, bi);
711 unsigned long i, next_bit;
712
713 cbs->bind_cmd_count = 0;
714 i = find_first_bit(dirty, max_num);
715 next_bit = i;
716 cbs->bind_first_slot = i;
717
718 biv += i;
719 for (; i < max_num; ++i, ++biv) {
720 cbs->bind_cmd_buffer[cbs->bind_cmd_count++] =
721 ((!biv->bi.ctx || biv->bi.scrubbed) ?
722 SVGA3D_INVALID_ID : biv->bi.res->id);
723
724 if (next_bit == i) {
725 next_bit = find_next_bit(dirty, max_num, i + 1);
726 if (next_bit >= max_num)
727 break;
728 }
729 }
730}
731
732/**
733 * vmw_binding_emit_set_sr - Issue delayed DX shader resource binding commands
734 *
735 * @cbs: Pointer to the context's struct vmw_ctx_binding_state
736 */
737static int vmw_emit_set_sr(struct vmw_ctx_binding_state *cbs,
738 int shader_slot)
739{
740 const struct vmw_ctx_bindinfo *loc =
741 &cbs->per_shader[shader_slot].shader_res[0].bi;
742 struct {
743 SVGA3dCmdHeader header;
744 SVGA3dCmdDXSetShaderResources body;
745 } *cmd;
746 size_t cmd_size, view_id_size;
747 const struct vmw_resource *ctx = vmw_cbs_context(cbs);
748
749 vmw_collect_dirty_view_ids(cbs, loc,
750 cbs->per_shader[shader_slot].dirty_sr,
751 SVGA3D_DX_MAX_SRVIEWS);
752 if (cbs->bind_cmd_count == 0)
753 return 0;
754
755 view_id_size = cbs->bind_cmd_count*sizeof(uint32);
756 cmd_size = sizeof(*cmd) + view_id_size;
757 cmd = VMW_FIFO_RESERVE_DX(ctx->dev_priv, cmd_size, ctx->id);
758 if (unlikely(cmd == NULL))
759 return -ENOMEM;
760
761 cmd->header.id = SVGA_3D_CMD_DX_SET_SHADER_RESOURCES;
762 cmd->header.size = sizeof(cmd->body) + view_id_size;
763 cmd->body.type = shader_slot + SVGA3D_SHADERTYPE_MIN;
764 cmd->body.startView = cbs->bind_first_slot;
765
766 memcpy(&cmd[1], cbs->bind_cmd_buffer, view_id_size);
767
768 vmw_fifo_commit(ctx->dev_priv, cmd_size);
769 bitmap_clear(cbs->per_shader[shader_slot].dirty_sr,
770 cbs->bind_first_slot, cbs->bind_cmd_count);
771
772 return 0;
773}
774
775/**
776 * vmw_binding_emit_set_rt - Issue delayed DX rendertarget binding commands
777 *
778 * @cbs: Pointer to the context's struct vmw_ctx_binding_state
779 */
780static int vmw_emit_set_rt(struct vmw_ctx_binding_state *cbs)
781{
782 const struct vmw_ctx_bindinfo *loc = &cbs->render_targets[0].bi;
783 struct {
784 SVGA3dCmdHeader header;
785 SVGA3dCmdDXSetRenderTargets body;
786 } *cmd;
787 size_t cmd_size, view_id_size;
788 const struct vmw_resource *ctx = vmw_cbs_context(cbs);
789
790 vmw_collect_view_ids(cbs, loc, SVGA3D_MAX_SIMULTANEOUS_RENDER_TARGETS);
791 view_id_size = cbs->bind_cmd_count*sizeof(uint32);
792 cmd_size = sizeof(*cmd) + view_id_size;
793 cmd = VMW_FIFO_RESERVE_DX(ctx->dev_priv, cmd_size, ctx->id);
794 if (unlikely(cmd == NULL))
795 return -ENOMEM;
796
797 cmd->header.id = SVGA_3D_CMD_DX_SET_RENDERTARGETS;
798 cmd->header.size = sizeof(cmd->body) + view_id_size;
799
800 if (cbs->ds_view.bi.ctx && !cbs->ds_view.bi.scrubbed)
801 cmd->body.depthStencilViewId = cbs->ds_view.bi.res->id;
802 else
803 cmd->body.depthStencilViewId = SVGA3D_INVALID_ID;
804
805 memcpy(&cmd[1], cbs->bind_cmd_buffer, view_id_size);
806
807 vmw_fifo_commit(ctx->dev_priv, cmd_size);
808
809 return 0;
810
811}
812
813/**
814 * vmw_collect_so_targets - Build SVGA3dSoTarget data for a binding command
815 * without checking which bindings actually need to be emitted
816 *
817 * @cbs: Pointer to the context's struct vmw_ctx_binding_state
818 * @bi: Pointer to where the binding info array is stored in @cbs
819 * @max_num: Maximum number of entries in the @bi array.
820 *
821 * Scans the @bi array for bindings and builds a buffer of SVGA3dSoTarget data.
822 * Stops at the first non-existing binding in the @bi array.
823 * On output, @cbs->bind_cmd_count contains the number of bindings to be
824 * emitted, @cbs->bind_first_slot is set to zero, and @cbs->bind_cmd_buffer
825 * contains the command data.
826 */
827static void vmw_collect_so_targets(struct vmw_ctx_binding_state *cbs,
828 const struct vmw_ctx_bindinfo *bi,
829 u32 max_num)
830{
831 const struct vmw_ctx_bindinfo_so *biso =
832 container_of(bi, struct vmw_ctx_bindinfo_so, bi);
833 unsigned long i;
834 SVGA3dSoTarget *so_buffer = (SVGA3dSoTarget *) cbs->bind_cmd_buffer;
835
836 cbs->bind_cmd_count = 0;
837 cbs->bind_first_slot = 0;
838
839 for (i = 0; i < max_num; ++i, ++biso, ++so_buffer,
840 ++cbs->bind_cmd_count) {
841 if (!biso->bi.ctx)
842 break;
843
844 if (!biso->bi.scrubbed) {
845 so_buffer->sid = biso->bi.res->id;
846 so_buffer->offset = biso->offset;
847 so_buffer->sizeInBytes = biso->size;
848 } else {
849 so_buffer->sid = SVGA3D_INVALID_ID;
850 so_buffer->offset = 0;
851 so_buffer->sizeInBytes = 0;
852 }
853 }
854}
855
856/**
857 * vmw_binding_emit_set_so - Issue delayed streamout binding commands
858 *
859 * @cbs: Pointer to the context's struct vmw_ctx_binding_state
860 */
861static int vmw_emit_set_so(struct vmw_ctx_binding_state *cbs)
862{
863 const struct vmw_ctx_bindinfo *loc = &cbs->so_targets[0].bi;
864 struct {
865 SVGA3dCmdHeader header;
866 SVGA3dCmdDXSetSOTargets body;
867 } *cmd;
868 size_t cmd_size, so_target_size;
869 const struct vmw_resource *ctx = vmw_cbs_context(cbs);
870
871 vmw_collect_so_targets(cbs, loc, SVGA3D_DX_MAX_SOTARGETS);
872 if (cbs->bind_cmd_count == 0)
873 return 0;
874
875 so_target_size = cbs->bind_cmd_count*sizeof(SVGA3dSoTarget);
876 cmd_size = sizeof(*cmd) + so_target_size;
877 cmd = VMW_FIFO_RESERVE_DX(ctx->dev_priv, cmd_size, ctx->id);
878 if (unlikely(cmd == NULL))
879 return -ENOMEM;
880
881 cmd->header.id = SVGA_3D_CMD_DX_SET_SOTARGETS;
882 cmd->header.size = sizeof(cmd->body) + so_target_size;
883 memcpy(&cmd[1], cbs->bind_cmd_buffer, so_target_size);
884
885 vmw_fifo_commit(ctx->dev_priv, cmd_size);
886
887 return 0;
888
889}
890
891/**
892 * vmw_binding_emit_dirty_ps - Issue delayed per shader binding commands
893 *
894 * @cbs: Pointer to the context's struct vmw_ctx_binding_state
895 *
896 */
897static int vmw_binding_emit_dirty_ps(struct vmw_ctx_binding_state *cbs)
898{
899 struct vmw_dx_shader_bindings *sb = &cbs->per_shader[0];
900 u32 i;
901 int ret;
902
903 for (i = 0; i < SVGA3D_NUM_SHADERTYPE_DX10; ++i, ++sb) {
904 if (!test_bit(VMW_BINDING_PS_SR_BIT, &sb->dirty))
905 continue;
906
907 ret = vmw_emit_set_sr(cbs, i);
908 if (ret)
909 break;
910
911 __clear_bit(VMW_BINDING_PS_SR_BIT, &sb->dirty);
912 }
913
914 return 0;
915}
916
917/**
918 * vmw_collect_dirty_vbs - Build SVGA3dVertexBuffer data for a
919 * SVGA3dCmdDXSetVertexBuffers command
920 *
921 * @cbs: Pointer to the context's struct vmw_ctx_binding_state
922 * @bi: Pointer to where the binding info array is stored in @cbs
923 * @dirty: Bitmap indicating which bindings need to be emitted.
924 * @max_num: Maximum number of entries in the @bi array.
925 *
926 * Scans the @bi array for bindings that need to be emitted and
927 * builds a buffer of SVGA3dVertexBuffer data.
928 * On output, @cbs->bind_cmd_count contains the number of bindings to be
929 * emitted, @cbs->bind_first_slot indicates the index of the first emitted
930 * binding, and @cbs->bind_cmd_buffer contains the command data.
931 */
932static void vmw_collect_dirty_vbs(struct vmw_ctx_binding_state *cbs,
933 const struct vmw_ctx_bindinfo *bi,
934 unsigned long *dirty,
935 u32 max_num)
936{
937 const struct vmw_ctx_bindinfo_vb *biv =
938 container_of(bi, struct vmw_ctx_bindinfo_vb, bi);
939 unsigned long i, next_bit;
940 SVGA3dVertexBuffer *vbs = (SVGA3dVertexBuffer *) &cbs->bind_cmd_buffer;
941
942 cbs->bind_cmd_count = 0;
943 i = find_first_bit(dirty, max_num);
944 next_bit = i;
945 cbs->bind_first_slot = i;
946
947 biv += i;
948 for (; i < max_num; ++i, ++biv, ++vbs) {
949 if (!biv->bi.ctx || biv->bi.scrubbed) {
950 vbs->sid = SVGA3D_INVALID_ID;
951 vbs->stride = 0;
952 vbs->offset = 0;
953 } else {
954 vbs->sid = biv->bi.res->id;
955 vbs->stride = biv->stride;
956 vbs->offset = biv->offset;
957 }
958 cbs->bind_cmd_count++;
959 if (next_bit == i) {
960 next_bit = find_next_bit(dirty, max_num, i + 1);
961 if (next_bit >= max_num)
962 break;
963 }
964 }
965}
966
967/**
968 * vmw_binding_emit_set_vb - Issue delayed vertex buffer binding commands
969 *
970 * @cbs: Pointer to the context's struct vmw_ctx_binding_state
971 *
972 */
973static int vmw_emit_set_vb(struct vmw_ctx_binding_state *cbs)
974{
975 const struct vmw_ctx_bindinfo *loc =
976 &cbs->vertex_buffers[0].bi;
977 struct {
978 SVGA3dCmdHeader header;
979 SVGA3dCmdDXSetVertexBuffers body;
980 } *cmd;
981 size_t cmd_size, set_vb_size;
982 const struct vmw_resource *ctx = vmw_cbs_context(cbs);
983
984 vmw_collect_dirty_vbs(cbs, loc, cbs->dirty_vb,
985 SVGA3D_DX_MAX_VERTEXBUFFERS);
986 if (cbs->bind_cmd_count == 0)
987 return 0;
988
989 set_vb_size = cbs->bind_cmd_count*sizeof(SVGA3dVertexBuffer);
990 cmd_size = sizeof(*cmd) + set_vb_size;
991 cmd = VMW_FIFO_RESERVE_DX(ctx->dev_priv, cmd_size, ctx->id);
992 if (unlikely(cmd == NULL))
993 return -ENOMEM;
994
995 cmd->header.id = SVGA_3D_CMD_DX_SET_VERTEX_BUFFERS;
996 cmd->header.size = sizeof(cmd->body) + set_vb_size;
997 cmd->body.startBuffer = cbs->bind_first_slot;
998
999 memcpy(&cmd[1], cbs->bind_cmd_buffer, set_vb_size);
1000
1001 vmw_fifo_commit(ctx->dev_priv, cmd_size);
1002 bitmap_clear(cbs->dirty_vb,
1003 cbs->bind_first_slot, cbs->bind_cmd_count);
1004
1005 return 0;
1006}
1007
1008/**
1009 * vmw_binding_emit_dirty - Issue delayed binding commands
1010 *
1011 * @cbs: Pointer to the context's struct vmw_ctx_binding_state
1012 *
1013 * This function issues the delayed binding commands that arise from
1014 * previous scrub / unscrub calls. These binding commands are typically
1015 * commands that batch a number of bindings and therefore it makes sense
1016 * to delay them.
1017 */
1018static int vmw_binding_emit_dirty(struct vmw_ctx_binding_state *cbs)
1019{
1020 int ret = 0;
1021 unsigned long hit = 0;
1022
1023 while ((hit = find_next_bit(&cbs->dirty, VMW_BINDING_NUM_BITS, hit))
1024 < VMW_BINDING_NUM_BITS) {
1025
1026 switch (hit) {
1027 case VMW_BINDING_RT_BIT:
1028 ret = vmw_emit_set_rt(cbs);
1029 break;
1030 case VMW_BINDING_PS_BIT:
1031 ret = vmw_binding_emit_dirty_ps(cbs);
1032 break;
1033 case VMW_BINDING_SO_BIT:
1034 ret = vmw_emit_set_so(cbs);
1035 break;
1036 case VMW_BINDING_VB_BIT:
1037 ret = vmw_emit_set_vb(cbs);
1038 break;
1039 default:
1040 BUG();
1041 }
1042 if (ret)
1043 return ret;
1044
1045 __clear_bit(hit, &cbs->dirty);
1046 hit++;
1047 }
1048
1049 return 0;
1050}
1051
1052/**
1053 * vmw_binding_scrub_sr - Schedule a dx shaderresource binding
1054 * scrub from a context
1055 *
1056 * @bi: single binding information.
1057 * @rebind: Whether to issue a bind instead of scrub command.
1058 */
1059static int vmw_binding_scrub_sr(struct vmw_ctx_bindinfo *bi, bool rebind)
1060{
1061 struct vmw_ctx_bindinfo_view *biv =
1062 container_of(bi, struct vmw_ctx_bindinfo_view, bi);
1063 struct vmw_ctx_binding_state *cbs =
1064 vmw_context_binding_state(bi->ctx);
1065
1066 __set_bit(biv->slot, cbs->per_shader[biv->shader_slot].dirty_sr);
1067 __set_bit(VMW_BINDING_PS_SR_BIT,
1068 &cbs->per_shader[biv->shader_slot].dirty);
1069 __set_bit(VMW_BINDING_PS_BIT, &cbs->dirty);
1070
1071 return 0;
1072}
1073
1074/**
1075 * vmw_binding_scrub_dx_rt - Schedule a dx rendertarget binding
1076 * scrub from a context
1077 *
1078 * @bi: single binding information.
1079 * @rebind: Whether to issue a bind instead of scrub command.
1080 */
1081static int vmw_binding_scrub_dx_rt(struct vmw_ctx_bindinfo *bi, bool rebind)
1082{
1083 struct vmw_ctx_binding_state *cbs =
1084 vmw_context_binding_state(bi->ctx);
1085
1086 __set_bit(VMW_BINDING_RT_BIT, &cbs->dirty);
1087
1088 return 0;
1089}
1090
1091/**
1092 * vmw_binding_scrub_so - Schedule a dx streamoutput buffer binding
1093 * scrub from a context
1094 *
1095 * @bi: single binding information.
1096 * @rebind: Whether to issue a bind instead of scrub command.
1097 */
1098static int vmw_binding_scrub_so(struct vmw_ctx_bindinfo *bi, bool rebind)
1099{
1100 struct vmw_ctx_binding_state *cbs =
1101 vmw_context_binding_state(bi->ctx);
1102
1103 __set_bit(VMW_BINDING_SO_BIT, &cbs->dirty);
1104
1105 return 0;
1106}
1107
1108/**
1109 * vmw_binding_scrub_vb - Schedule a dx vertex buffer binding
1110 * scrub from a context
1111 *
1112 * @bi: single binding information.
1113 * @rebind: Whether to issue a bind instead of scrub command.
1114 */
1115static int vmw_binding_scrub_vb(struct vmw_ctx_bindinfo *bi, bool rebind)
1116{
1117 struct vmw_ctx_bindinfo_vb *bivb =
1118 container_of(bi, struct vmw_ctx_bindinfo_vb, bi);
1119 struct vmw_ctx_binding_state *cbs =
1120 vmw_context_binding_state(bi->ctx);
1121
1122 __set_bit(bivb->slot, cbs->dirty_vb);
1123 __set_bit(VMW_BINDING_VB_BIT, &cbs->dirty);
1124
1125 return 0;
1126}
1127
1128/**
1129 * vmw_binding_scrub_ib - scrub a dx index buffer binding from a context
1130 *
1131 * @bi: single binding information.
1132 * @rebind: Whether to issue a bind instead of scrub command.
1133 */
1134static int vmw_binding_scrub_ib(struct vmw_ctx_bindinfo *bi, bool rebind)
1135{
1136 struct vmw_ctx_bindinfo_ib *binding =
1137 container_of(bi, typeof(*binding), bi);
1138 struct vmw_private *dev_priv = bi->ctx->dev_priv;
1139 struct {
1140 SVGA3dCmdHeader header;
1141 SVGA3dCmdDXSetIndexBuffer body;
1142 } *cmd;
1143
1144 cmd = VMW_FIFO_RESERVE_DX(dev_priv, sizeof(*cmd), bi->ctx->id);
1145 if (unlikely(cmd == NULL))
1146 return -ENOMEM;
1147
1148 cmd->header.id = SVGA_3D_CMD_DX_SET_INDEX_BUFFER;
1149 cmd->header.size = sizeof(cmd->body);
1150 if (rebind) {
1151 cmd->body.sid = bi->res->id;
1152 cmd->body.format = binding->format;
1153 cmd->body.offset = binding->offset;
1154 } else {
1155 cmd->body.sid = SVGA3D_INVALID_ID;
1156 cmd->body.format = 0;
1157 cmd->body.offset = 0;
1158 }
1159
1160 vmw_fifo_commit(dev_priv, sizeof(*cmd));
1161
1162 return 0;
1163}
1164
1165/**
1166 * vmw_binding_state_alloc - Allocate a struct vmw_ctx_binding_state with
1167 * memory accounting.
1168 *
1169 * @dev_priv: Pointer to a device private structure.
1170 *
1171 * Returns a pointer to a newly allocated struct or an error pointer on error.
1172 */
1173struct vmw_ctx_binding_state *
1174vmw_binding_state_alloc(struct vmw_private *dev_priv)
1175{
1176 struct vmw_ctx_binding_state *cbs;
1177 struct ttm_operation_ctx ctx = {
1178 .interruptible = false,
1179 .no_wait_gpu = false
1180 };
1181 int ret;
1182
1183 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv), sizeof(*cbs),
1184 &ctx);
1185 if (ret)
1186 return ERR_PTR(ret);
1187
1188 cbs = vzalloc(sizeof(*cbs));
1189 if (!cbs) {
1190 ttm_mem_global_free(vmw_mem_glob(dev_priv), sizeof(*cbs));
1191 return ERR_PTR(-ENOMEM);
1192 }
1193
1194 cbs->dev_priv = dev_priv;
1195 INIT_LIST_HEAD(&cbs->list);
1196
1197 return cbs;
1198}
1199
1200/**
1201 * vmw_binding_state_free - Free a struct vmw_ctx_binding_state and its
1202 * memory accounting info.
1203 *
1204 * @cbs: Pointer to the struct vmw_ctx_binding_state to be freed.
1205 */
1206void vmw_binding_state_free(struct vmw_ctx_binding_state *cbs)
1207{
1208 struct vmw_private *dev_priv = cbs->dev_priv;
1209
1210 vfree(cbs);
1211 ttm_mem_global_free(vmw_mem_glob(dev_priv), sizeof(*cbs));
1212}
1213
1214/**
1215 * vmw_binding_state_list - Get the binding list of a
1216 * struct vmw_ctx_binding_state
1217 *
1218 * @cbs: Pointer to the struct vmw_ctx_binding_state
1219 *
1220 * Returns the binding list which can be used to traverse through the bindings
1221 * and access the resource information of all bindings.
1222 */
1223struct list_head *vmw_binding_state_list(struct vmw_ctx_binding_state *cbs)
1224{
1225 return &cbs->list;
1226}
1227
1228/**
1229 * vmwgfx_binding_state_reset - clear a struct vmw_ctx_binding_state
1230 *
1231 * @cbs: Pointer to the struct vmw_ctx_binding_state to be cleared
1232 *
1233 * Drops all bindings registered in @cbs. No device binding actions are
1234 * performed.
1235 */
1236void vmw_binding_state_reset(struct vmw_ctx_binding_state *cbs)
1237{
1238 struct vmw_ctx_bindinfo *entry, *next;
1239
1240 list_for_each_entry_safe(entry, next, &cbs->list, ctx_list)
1241 vmw_binding_drop(entry);
1242}
1243
1244/**
1245 * vmw_binding_dirtying - Return whether a binding type is dirtying its resource
1246 * @binding_type: The binding type
1247 *
1248 * Each time a resource is put on the validation list as the result of a
1249 * context binding referencing it, we need to determine whether that resource
1250 * will be dirtied (written to by the GPU) as a result of the corresponding
1251 * GPU operation. Currently rendertarget-, depth-stencil-, and
1252 * stream-output-target bindings are capable of dirtying its resource.
1253 *
1254 * Return: Whether the binding type dirties the resource its binding points to.
1255 */
1256u32 vmw_binding_dirtying(enum vmw_ctx_binding_type binding_type)
1257{
1258 static u32 is_binding_dirtying[vmw_ctx_binding_max] = {
1259 [vmw_ctx_binding_rt] = VMW_RES_DIRTY_SET,
1260 [vmw_ctx_binding_dx_rt] = VMW_RES_DIRTY_SET,
1261 [vmw_ctx_binding_ds] = VMW_RES_DIRTY_SET,
1262 [vmw_ctx_binding_so] = VMW_RES_DIRTY_SET,
1263 };
1264
1265 /* Review this function as new bindings are added. */
1266 BUILD_BUG_ON(vmw_ctx_binding_max != 11);
1267 return is_binding_dirtying[binding_type];
1268}
1269
1270/*
1271 * This function is unused at run-time, and only used to hold various build
1272 * asserts important for code optimization assumptions.
1273 */
1274static void vmw_binding_build_asserts(void)
1275{
1276 BUILD_BUG_ON(SVGA3D_NUM_SHADERTYPE_DX10 != 3);
1277 BUILD_BUG_ON(SVGA3D_MAX_SIMULTANEOUS_RENDER_TARGETS > SVGA3D_RT_MAX);
1278 BUILD_BUG_ON(sizeof(uint32) != sizeof(u32));
1279
1280 /*
1281 * struct vmw_ctx_binding_state::bind_cmd_buffer is used for various
1282 * view id arrays.
1283 */
1284 BUILD_BUG_ON(VMW_MAX_VIEW_BINDINGS < SVGA3D_RT_MAX);
1285 BUILD_BUG_ON(VMW_MAX_VIEW_BINDINGS < SVGA3D_DX_MAX_SRVIEWS);
1286 BUILD_BUG_ON(VMW_MAX_VIEW_BINDINGS < SVGA3D_DX_MAX_CONSTBUFFERS);
1287
1288 /*
1289 * struct vmw_ctx_binding_state::bind_cmd_buffer is used for
1290 * u32 view ids, SVGA3dSoTargets and SVGA3dVertexBuffers
1291 */
1292 BUILD_BUG_ON(SVGA3D_DX_MAX_SOTARGETS*sizeof(SVGA3dSoTarget) >
1293 VMW_MAX_VIEW_BINDINGS*sizeof(u32));
1294 BUILD_BUG_ON(SVGA3D_DX_MAX_VERTEXBUFFERS*sizeof(SVGA3dVertexBuffer) >
1295 VMW_MAX_VIEW_BINDINGS*sizeof(u32));
1296}