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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_resource.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_resource.c2019
1 files changed, 663 insertions, 1356 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
index da3c6b5b98a1..e01a17b407b2 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -30,17 +30,7 @@
30#include <drm/ttm/ttm_object.h> 30#include <drm/ttm/ttm_object.h>
31#include <drm/ttm/ttm_placement.h> 31#include <drm/ttm/ttm_placement.h>
32#include <drm/drmP.h> 32#include <drm/drmP.h>
33 33#include "vmwgfx_resource_priv.h"
34struct vmw_user_context {
35 struct ttm_base_object base;
36 struct vmw_resource res;
37};
38
39struct vmw_user_surface {
40 struct ttm_base_object base;
41 struct vmw_surface srf;
42 uint32_t size;
43};
44 34
45struct vmw_user_dma_buffer { 35struct vmw_user_dma_buffer {
46 struct ttm_base_object base; 36 struct ttm_base_object base;
@@ -62,17 +52,21 @@ struct vmw_user_stream {
62 struct vmw_stream stream; 52 struct vmw_stream stream;
63}; 53};
64 54
65struct vmw_surface_offset {
66 uint32_t face;
67 uint32_t mip;
68 uint32_t bo_offset;
69};
70 55
71
72static uint64_t vmw_user_context_size;
73static uint64_t vmw_user_surface_size;
74static uint64_t vmw_user_stream_size; 56static uint64_t vmw_user_stream_size;
75 57
58static const struct vmw_res_func vmw_stream_func = {
59 .res_type = vmw_res_stream,
60 .needs_backup = false,
61 .may_evict = false,
62 .type_name = "video streams",
63 .backup_placement = NULL,
64 .create = NULL,
65 .destroy = NULL,
66 .bind = NULL,
67 .unbind = NULL
68};
69
76static inline struct vmw_dma_buffer * 70static inline struct vmw_dma_buffer *
77vmw_dma_buffer(struct ttm_buffer_object *bo) 71vmw_dma_buffer(struct ttm_buffer_object *bo)
78{ 72{
@@ -100,13 +94,14 @@ struct vmw_resource *vmw_resource_reference(struct vmw_resource *res)
100 * 94 *
101 * Release the resource id to the resource id manager and set it to -1 95 * Release the resource id to the resource id manager and set it to -1
102 */ 96 */
103static void vmw_resource_release_id(struct vmw_resource *res) 97void vmw_resource_release_id(struct vmw_resource *res)
104{ 98{
105 struct vmw_private *dev_priv = res->dev_priv; 99 struct vmw_private *dev_priv = res->dev_priv;
100 struct idr *idr = &dev_priv->res_idr[res->func->res_type];
106 101
107 write_lock(&dev_priv->resource_lock); 102 write_lock(&dev_priv->resource_lock);
108 if (res->id != -1) 103 if (res->id != -1)
109 idr_remove(res->idr, res->id); 104 idr_remove(idr, res->id);
110 res->id = -1; 105 res->id = -1;
111 write_unlock(&dev_priv->resource_lock); 106 write_unlock(&dev_priv->resource_lock);
112} 107}
@@ -116,17 +111,33 @@ static void vmw_resource_release(struct kref *kref)
116 struct vmw_resource *res = 111 struct vmw_resource *res =
117 container_of(kref, struct vmw_resource, kref); 112 container_of(kref, struct vmw_resource, kref);
118 struct vmw_private *dev_priv = res->dev_priv; 113 struct vmw_private *dev_priv = res->dev_priv;
119 int id = res->id; 114 int id;
120 struct idr *idr = res->idr; 115 struct idr *idr = &dev_priv->res_idr[res->func->res_type];
121 116
122 res->avail = false; 117 res->avail = false;
123 if (res->remove_from_lists != NULL) 118 list_del_init(&res->lru_head);
124 res->remove_from_lists(res);
125 write_unlock(&dev_priv->resource_lock); 119 write_unlock(&dev_priv->resource_lock);
120 if (res->backup) {
121 struct ttm_buffer_object *bo = &res->backup->base;
122
123 ttm_bo_reserve(bo, false, false, false, 0);
124 if (!list_empty(&res->mob_head) &&
125 res->func->unbind != NULL) {
126 struct ttm_validate_buffer val_buf;
127
128 val_buf.bo = bo;
129 res->func->unbind(res, false, &val_buf);
130 }
131 res->backup_dirty = false;
132 list_del_init(&res->mob_head);
133 ttm_bo_unreserve(bo);
134 vmw_dmabuf_unreference(&res->backup);
135 }
126 136
127 if (likely(res->hw_destroy != NULL)) 137 if (likely(res->hw_destroy != NULL))
128 res->hw_destroy(res); 138 res->hw_destroy(res);
129 139
140 id = res->id;
130 if (res->res_free != NULL) 141 if (res->res_free != NULL)
131 res->res_free(res); 142 res->res_free(res);
132 else 143 else
@@ -153,25 +164,25 @@ void vmw_resource_unreference(struct vmw_resource **p_res)
153/** 164/**
154 * vmw_resource_alloc_id - release a resource id to the id manager. 165 * vmw_resource_alloc_id - release a resource id to the id manager.
155 * 166 *
156 * @dev_priv: Pointer to the device private structure.
157 * @res: Pointer to the resource. 167 * @res: Pointer to the resource.
158 * 168 *
159 * Allocate the lowest free resource from the resource manager, and set 169 * Allocate the lowest free resource from the resource manager, and set
160 * @res->id to that id. Returns 0 on success and -ENOMEM on failure. 170 * @res->id to that id. Returns 0 on success and -ENOMEM on failure.
161 */ 171 */
162static int vmw_resource_alloc_id(struct vmw_private *dev_priv, 172int vmw_resource_alloc_id(struct vmw_resource *res)
163 struct vmw_resource *res)
164{ 173{
174 struct vmw_private *dev_priv = res->dev_priv;
165 int ret; 175 int ret;
176 struct idr *idr = &dev_priv->res_idr[res->func->res_type];
166 177
167 BUG_ON(res->id != -1); 178 BUG_ON(res->id != -1);
168 179
169 do { 180 do {
170 if (unlikely(idr_pre_get(res->idr, GFP_KERNEL) == 0)) 181 if (unlikely(idr_pre_get(idr, GFP_KERNEL) == 0))
171 return -ENOMEM; 182 return -ENOMEM;
172 183
173 write_lock(&dev_priv->resource_lock); 184 write_lock(&dev_priv->resource_lock);
174 ret = idr_get_new_above(res->idr, res, 1, &res->id); 185 ret = idr_get_new_above(idr, res, 1, &res->id);
175 write_unlock(&dev_priv->resource_lock); 186 write_unlock(&dev_priv->resource_lock);
176 187
177 } while (ret == -EAGAIN); 188 } while (ret == -EAGAIN);
@@ -179,31 +190,39 @@ static int vmw_resource_alloc_id(struct vmw_private *dev_priv,
179 return ret; 190 return ret;
180} 191}
181 192
182 193/**
183static int vmw_resource_init(struct vmw_private *dev_priv, 194 * vmw_resource_init - initialize a struct vmw_resource
184 struct vmw_resource *res, 195 *
185 struct idr *idr, 196 * @dev_priv: Pointer to a device private struct.
186 enum ttm_object_type obj_type, 197 * @res: The struct vmw_resource to initialize.
187 bool delay_id, 198 * @obj_type: Resource object type.
188 void (*res_free) (struct vmw_resource *res), 199 * @delay_id: Boolean whether to defer device id allocation until
189 void (*remove_from_lists) 200 * the first validation.
190 (struct vmw_resource *res)) 201 * @res_free: Resource destructor.
202 * @func: Resource function table.
203 */
204int vmw_resource_init(struct vmw_private *dev_priv, struct vmw_resource *res,
205 bool delay_id,
206 void (*res_free) (struct vmw_resource *res),
207 const struct vmw_res_func *func)
191{ 208{
192 kref_init(&res->kref); 209 kref_init(&res->kref);
193 res->hw_destroy = NULL; 210 res->hw_destroy = NULL;
194 res->res_free = res_free; 211 res->res_free = res_free;
195 res->remove_from_lists = remove_from_lists;
196 res->res_type = obj_type;
197 res->idr = idr;
198 res->avail = false; 212 res->avail = false;
199 res->dev_priv = dev_priv; 213 res->dev_priv = dev_priv;
200 INIT_LIST_HEAD(&res->query_head); 214 res->func = func;
201 INIT_LIST_HEAD(&res->validate_head); 215 INIT_LIST_HEAD(&res->lru_head);
216 INIT_LIST_HEAD(&res->mob_head);
202 res->id = -1; 217 res->id = -1;
218 res->backup = NULL;
219 res->backup_offset = 0;
220 res->backup_dirty = false;
221 res->res_dirty = false;
203 if (delay_id) 222 if (delay_id)
204 return 0; 223 return 0;
205 else 224 else
206 return vmw_resource_alloc_id(dev_priv, res); 225 return vmw_resource_alloc_id(res);
207} 226}
208 227
209/** 228/**
@@ -218,9 +237,8 @@ static int vmw_resource_init(struct vmw_private *dev_priv,
218 * Activate basically means that the function vmw_resource_lookup will 237 * Activate basically means that the function vmw_resource_lookup will
219 * find it. 238 * find it.
220 */ 239 */
221 240void vmw_resource_activate(struct vmw_resource *res,
222static void vmw_resource_activate(struct vmw_resource *res, 241 void (*hw_destroy) (struct vmw_resource *))
223 void (*hw_destroy) (struct vmw_resource *))
224{ 242{
225 struct vmw_private *dev_priv = res->dev_priv; 243 struct vmw_private *dev_priv = res->dev_priv;
226 244
@@ -250,994 +268,41 @@ struct vmw_resource *vmw_resource_lookup(struct vmw_private *dev_priv,
250} 268}
251 269
252/** 270/**
253 * Context management: 271 * vmw_user_resource_lookup_handle - lookup a struct resource from a
254 */ 272 * TTM user-space handle and perform basic type checks
255
256static void vmw_hw_context_destroy(struct vmw_resource *res)
257{
258
259 struct vmw_private *dev_priv = res->dev_priv;
260 struct {
261 SVGA3dCmdHeader header;
262 SVGA3dCmdDestroyContext body;
263 } *cmd;
264
265
266 vmw_execbuf_release_pinned_bo(dev_priv, true, res->id);
267
268 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
269 if (unlikely(cmd == NULL)) {
270 DRM_ERROR("Failed reserving FIFO space for surface "
271 "destruction.\n");
272 return;
273 }
274
275 cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DESTROY);
276 cmd->header.size = cpu_to_le32(sizeof(cmd->body));
277 cmd->body.cid = cpu_to_le32(res->id);
278
279 vmw_fifo_commit(dev_priv, sizeof(*cmd));
280 vmw_3d_resource_dec(dev_priv, false);
281}
282
283static int vmw_context_init(struct vmw_private *dev_priv,
284 struct vmw_resource *res,
285 void (*res_free) (struct vmw_resource *res))
286{
287 int ret;
288
289 struct {
290 SVGA3dCmdHeader header;
291 SVGA3dCmdDefineContext body;
292 } *cmd;
293
294 ret = vmw_resource_init(dev_priv, res, &dev_priv->context_idr,
295 VMW_RES_CONTEXT, false, res_free, NULL);
296
297 if (unlikely(ret != 0)) {
298 DRM_ERROR("Failed to allocate a resource id.\n");
299 goto out_early;
300 }
301
302 if (unlikely(res->id >= SVGA3D_MAX_CONTEXT_IDS)) {
303 DRM_ERROR("Out of hw context ids.\n");
304 vmw_resource_unreference(&res);
305 return -ENOMEM;
306 }
307
308 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
309 if (unlikely(cmd == NULL)) {
310 DRM_ERROR("Fifo reserve failed.\n");
311 vmw_resource_unreference(&res);
312 return -ENOMEM;
313 }
314
315 cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DEFINE);
316 cmd->header.size = cpu_to_le32(sizeof(cmd->body));
317 cmd->body.cid = cpu_to_le32(res->id);
318
319 vmw_fifo_commit(dev_priv, sizeof(*cmd));
320 (void) vmw_3d_resource_inc(dev_priv, false);
321 vmw_resource_activate(res, vmw_hw_context_destroy);
322 return 0;
323
324out_early:
325 if (res_free == NULL)
326 kfree(res);
327 else
328 res_free(res);
329 return ret;
330}
331
332struct vmw_resource *vmw_context_alloc(struct vmw_private *dev_priv)
333{
334 struct vmw_resource *res = kmalloc(sizeof(*res), GFP_KERNEL);
335 int ret;
336
337 if (unlikely(res == NULL))
338 return NULL;
339
340 ret = vmw_context_init(dev_priv, res, NULL);
341 return (ret == 0) ? res : NULL;
342}
343
344/**
345 * User-space context management:
346 */
347
348static void vmw_user_context_free(struct vmw_resource *res)
349{
350 struct vmw_user_context *ctx =
351 container_of(res, struct vmw_user_context, res);
352 struct vmw_private *dev_priv = res->dev_priv;
353
354 kfree(ctx);
355 ttm_mem_global_free(vmw_mem_glob(dev_priv),
356 vmw_user_context_size);
357}
358
359/**
360 * This function is called when user space has no more references on the
361 * base object. It releases the base-object's reference on the resource object.
362 */
363
364static void vmw_user_context_base_release(struct ttm_base_object **p_base)
365{
366 struct ttm_base_object *base = *p_base;
367 struct vmw_user_context *ctx =
368 container_of(base, struct vmw_user_context, base);
369 struct vmw_resource *res = &ctx->res;
370
371 *p_base = NULL;
372 vmw_resource_unreference(&res);
373}
374
375int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
376 struct drm_file *file_priv)
377{
378 struct vmw_private *dev_priv = vmw_priv(dev);
379 struct vmw_resource *res;
380 struct vmw_user_context *ctx;
381 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
382 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
383 int ret = 0;
384
385 res = vmw_resource_lookup(dev_priv, &dev_priv->context_idr, arg->cid);
386 if (unlikely(res == NULL))
387 return -EINVAL;
388
389 if (res->res_free != &vmw_user_context_free) {
390 ret = -EINVAL;
391 goto out;
392 }
393
394 ctx = container_of(res, struct vmw_user_context, res);
395 if (ctx->base.tfile != tfile && !ctx->base.shareable) {
396 ret = -EPERM;
397 goto out;
398 }
399
400 ttm_ref_object_base_unref(tfile, ctx->base.hash.key, TTM_REF_USAGE);
401out:
402 vmw_resource_unreference(&res);
403 return ret;
404}
405
406int vmw_context_define_ioctl(struct drm_device *dev, void *data,
407 struct drm_file *file_priv)
408{
409 struct vmw_private *dev_priv = vmw_priv(dev);
410 struct vmw_user_context *ctx;
411 struct vmw_resource *res;
412 struct vmw_resource *tmp;
413 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
414 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
415 struct vmw_master *vmaster = vmw_master(file_priv->master);
416 int ret;
417
418
419 /*
420 * Approximate idr memory usage with 128 bytes. It will be limited
421 * by maximum number_of contexts anyway.
422 */
423
424 if (unlikely(vmw_user_context_size == 0))
425 vmw_user_context_size = ttm_round_pot(sizeof(*ctx)) + 128;
426
427 ret = ttm_read_lock(&vmaster->lock, true);
428 if (unlikely(ret != 0))
429 return ret;
430
431 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
432 vmw_user_context_size,
433 false, true);
434 if (unlikely(ret != 0)) {
435 if (ret != -ERESTARTSYS)
436 DRM_ERROR("Out of graphics memory for context"
437 " creation.\n");
438 goto out_unlock;
439 }
440
441 ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
442 if (unlikely(ctx == NULL)) {
443 ttm_mem_global_free(vmw_mem_glob(dev_priv),
444 vmw_user_context_size);
445 ret = -ENOMEM;
446 goto out_unlock;
447 }
448
449 res = &ctx->res;
450 ctx->base.shareable = false;
451 ctx->base.tfile = NULL;
452
453 /*
454 * From here on, the destructor takes over resource freeing.
455 */
456
457 ret = vmw_context_init(dev_priv, res, vmw_user_context_free);
458 if (unlikely(ret != 0))
459 goto out_unlock;
460
461 tmp = vmw_resource_reference(&ctx->res);
462 ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT,
463 &vmw_user_context_base_release, NULL);
464
465 if (unlikely(ret != 0)) {
466 vmw_resource_unreference(&tmp);
467 goto out_err;
468 }
469
470 arg->cid = res->id;
471out_err:
472 vmw_resource_unreference(&res);
473out_unlock:
474 ttm_read_unlock(&vmaster->lock);
475 return ret;
476
477}
478
479int vmw_context_check(struct vmw_private *dev_priv,
480 struct ttm_object_file *tfile,
481 int id,
482 struct vmw_resource **p_res)
483{
484 struct vmw_resource *res;
485 int ret = 0;
486
487 read_lock(&dev_priv->resource_lock);
488 res = idr_find(&dev_priv->context_idr, id);
489 if (res && res->avail) {
490 struct vmw_user_context *ctx =
491 container_of(res, struct vmw_user_context, res);
492 if (ctx->base.tfile != tfile && !ctx->base.shareable)
493 ret = -EPERM;
494 if (p_res)
495 *p_res = vmw_resource_reference(res);
496 } else
497 ret = -EINVAL;
498 read_unlock(&dev_priv->resource_lock);
499
500 return ret;
501}
502
503struct vmw_bpp {
504 uint8_t bpp;
505 uint8_t s_bpp;
506};
507
508/*
509 * Size table for the supported SVGA3D surface formats. It consists of
510 * two values. The bpp value and the s_bpp value which is short for
511 * "stride bits per pixel" The values are given in such a way that the
512 * minimum stride for the image is calculated using
513 *
514 * min_stride = w*s_bpp
515 *
516 * and the total memory requirement for the image is
517 *
518 * h*min_stride*bpp/s_bpp
519 *
520 */
521static const struct vmw_bpp vmw_sf_bpp[] = {
522 [SVGA3D_FORMAT_INVALID] = {0, 0},
523 [SVGA3D_X8R8G8B8] = {32, 32},
524 [SVGA3D_A8R8G8B8] = {32, 32},
525 [SVGA3D_R5G6B5] = {16, 16},
526 [SVGA3D_X1R5G5B5] = {16, 16},
527 [SVGA3D_A1R5G5B5] = {16, 16},
528 [SVGA3D_A4R4G4B4] = {16, 16},
529 [SVGA3D_Z_D32] = {32, 32},
530 [SVGA3D_Z_D16] = {16, 16},
531 [SVGA3D_Z_D24S8] = {32, 32},
532 [SVGA3D_Z_D15S1] = {16, 16},
533 [SVGA3D_LUMINANCE8] = {8, 8},
534 [SVGA3D_LUMINANCE4_ALPHA4] = {8, 8},
535 [SVGA3D_LUMINANCE16] = {16, 16},
536 [SVGA3D_LUMINANCE8_ALPHA8] = {16, 16},
537 [SVGA3D_DXT1] = {4, 16},
538 [SVGA3D_DXT2] = {8, 32},
539 [SVGA3D_DXT3] = {8, 32},
540 [SVGA3D_DXT4] = {8, 32},
541 [SVGA3D_DXT5] = {8, 32},
542 [SVGA3D_BUMPU8V8] = {16, 16},
543 [SVGA3D_BUMPL6V5U5] = {16, 16},
544 [SVGA3D_BUMPX8L8V8U8] = {32, 32},
545 [SVGA3D_ARGB_S10E5] = {16, 16},
546 [SVGA3D_ARGB_S23E8] = {32, 32},
547 [SVGA3D_A2R10G10B10] = {32, 32},
548 [SVGA3D_V8U8] = {16, 16},
549 [SVGA3D_Q8W8V8U8] = {32, 32},
550 [SVGA3D_CxV8U8] = {16, 16},
551 [SVGA3D_X8L8V8U8] = {32, 32},
552 [SVGA3D_A2W10V10U10] = {32, 32},
553 [SVGA3D_ALPHA8] = {8, 8},
554 [SVGA3D_R_S10E5] = {16, 16},
555 [SVGA3D_R_S23E8] = {32, 32},
556 [SVGA3D_RG_S10E5] = {16, 16},
557 [SVGA3D_RG_S23E8] = {32, 32},
558 [SVGA3D_BUFFER] = {8, 8},
559 [SVGA3D_Z_D24X8] = {32, 32},
560 [SVGA3D_V16U16] = {32, 32},
561 [SVGA3D_G16R16] = {32, 32},
562 [SVGA3D_A16B16G16R16] = {64, 64},
563 [SVGA3D_UYVY] = {12, 12},
564 [SVGA3D_YUY2] = {12, 12},
565 [SVGA3D_NV12] = {12, 8},
566 [SVGA3D_AYUV] = {32, 32},
567 [SVGA3D_BC4_UNORM] = {4, 16},
568 [SVGA3D_BC5_UNORM] = {8, 32},
569 [SVGA3D_Z_DF16] = {16, 16},
570 [SVGA3D_Z_DF24] = {24, 24},
571 [SVGA3D_Z_D24S8_INT] = {32, 32}
572};
573
574
575/**
576 * Surface management.
577 */
578
579struct vmw_surface_dma {
580 SVGA3dCmdHeader header;
581 SVGA3dCmdSurfaceDMA body;
582 SVGA3dCopyBox cb;
583 SVGA3dCmdSurfaceDMASuffix suffix;
584};
585
586struct vmw_surface_define {
587 SVGA3dCmdHeader header;
588 SVGA3dCmdDefineSurface body;
589};
590
591struct vmw_surface_destroy {
592 SVGA3dCmdHeader header;
593 SVGA3dCmdDestroySurface body;
594};
595
596
597/**
598 * vmw_surface_dma_size - Compute fifo size for a dma command.
599 *
600 * @srf: Pointer to a struct vmw_surface
601 *
602 * Computes the required size for a surface dma command for backup or
603 * restoration of the surface represented by @srf.
604 */
605static inline uint32_t vmw_surface_dma_size(const struct vmw_surface *srf)
606{
607 return srf->num_sizes * sizeof(struct vmw_surface_dma);
608}
609
610
611/**
612 * vmw_surface_define_size - Compute fifo size for a surface define command.
613 *
614 * @srf: Pointer to a struct vmw_surface
615 *
616 * Computes the required size for a surface define command for the definition
617 * of the surface represented by @srf.
618 */
619static inline uint32_t vmw_surface_define_size(const struct vmw_surface *srf)
620{
621 return sizeof(struct vmw_surface_define) + srf->num_sizes *
622 sizeof(SVGA3dSize);
623}
624
625
626/**
627 * vmw_surface_destroy_size - Compute fifo size for a surface destroy command.
628 * 273 *
629 * Computes the required size for a surface destroy command for the destruction 274 * @dev_priv: Pointer to a device private struct
630 * of a hw surface. 275 * @tfile: Pointer to a struct ttm_object_file identifying the caller
631 */ 276 * @handle: The TTM user-space handle
632static inline uint32_t vmw_surface_destroy_size(void) 277 * @converter: Pointer to an object describing the resource type
633{ 278 * @p_res: On successful return the location pointed to will contain
634 return sizeof(struct vmw_surface_destroy); 279 * a pointer to a refcounted struct vmw_resource.
635}
636
637/**
638 * vmw_surface_destroy_encode - Encode a surface_destroy command.
639 *
640 * @id: The surface id
641 * @cmd_space: Pointer to memory area in which the commands should be encoded.
642 */
643static void vmw_surface_destroy_encode(uint32_t id,
644 void *cmd_space)
645{
646 struct vmw_surface_destroy *cmd = (struct vmw_surface_destroy *)
647 cmd_space;
648
649 cmd->header.id = SVGA_3D_CMD_SURFACE_DESTROY;
650 cmd->header.size = sizeof(cmd->body);
651 cmd->body.sid = id;
652}
653
654/**
655 * vmw_surface_define_encode - Encode a surface_define command.
656 * 280 *
657 * @srf: Pointer to a struct vmw_surface object. 281 * If the handle can't be found or is associated with an incorrect resource
658 * @cmd_space: Pointer to memory area in which the commands should be encoded. 282 * type, -EINVAL will be returned.
659 */ 283 */
660static void vmw_surface_define_encode(const struct vmw_surface *srf, 284int vmw_user_resource_lookup_handle(struct vmw_private *dev_priv,
661 void *cmd_space) 285 struct ttm_object_file *tfile,
286 uint32_t handle,
287 const struct vmw_user_resource_conv
288 *converter,
289 struct vmw_resource **p_res)
662{ 290{
663 struct vmw_surface_define *cmd = (struct vmw_surface_define *)
664 cmd_space;
665 struct drm_vmw_size *src_size;
666 SVGA3dSize *cmd_size;
667 uint32_t cmd_len;
668 int i;
669
670 cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
671
672 cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE;
673 cmd->header.size = cmd_len;
674 cmd->body.sid = srf->res.id;
675 cmd->body.surfaceFlags = srf->flags;
676 cmd->body.format = cpu_to_le32(srf->format);
677 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
678 cmd->body.face[i].numMipLevels = srf->mip_levels[i];
679
680 cmd += 1;
681 cmd_size = (SVGA3dSize *) cmd;
682 src_size = srf->sizes;
683
684 for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) {
685 cmd_size->width = src_size->width;
686 cmd_size->height = src_size->height;
687 cmd_size->depth = src_size->depth;
688 }
689}
690
691
692/**
693 * vmw_surface_dma_encode - Encode a surface_dma command.
694 *
695 * @srf: Pointer to a struct vmw_surface object.
696 * @cmd_space: Pointer to memory area in which the commands should be encoded.
697 * @ptr: Pointer to an SVGAGuestPtr indicating where the surface contents
698 * should be placed or read from.
699 * @to_surface: Boolean whether to DMA to the surface or from the surface.
700 */
701static void vmw_surface_dma_encode(struct vmw_surface *srf,
702 void *cmd_space,
703 const SVGAGuestPtr *ptr,
704 bool to_surface)
705{
706 uint32_t i;
707 uint32_t bpp = vmw_sf_bpp[srf->format].bpp;
708 uint32_t stride_bpp = vmw_sf_bpp[srf->format].s_bpp;
709 struct vmw_surface_dma *cmd = (struct vmw_surface_dma *)cmd_space;
710
711 for (i = 0; i < srf->num_sizes; ++i) {
712 SVGA3dCmdHeader *header = &cmd->header;
713 SVGA3dCmdSurfaceDMA *body = &cmd->body;
714 SVGA3dCopyBox *cb = &cmd->cb;
715 SVGA3dCmdSurfaceDMASuffix *suffix = &cmd->suffix;
716 const struct vmw_surface_offset *cur_offset = &srf->offsets[i];
717 const struct drm_vmw_size *cur_size = &srf->sizes[i];
718
719 header->id = SVGA_3D_CMD_SURFACE_DMA;
720 header->size = sizeof(*body) + sizeof(*cb) + sizeof(*suffix);
721
722 body->guest.ptr = *ptr;
723 body->guest.ptr.offset += cur_offset->bo_offset;
724 body->guest.pitch = (cur_size->width * stride_bpp + 7) >> 3;
725 body->host.sid = srf->res.id;
726 body->host.face = cur_offset->face;
727 body->host.mipmap = cur_offset->mip;
728 body->transfer = ((to_surface) ? SVGA3D_WRITE_HOST_VRAM :
729 SVGA3D_READ_HOST_VRAM);
730 cb->x = 0;
731 cb->y = 0;
732 cb->z = 0;
733 cb->srcx = 0;
734 cb->srcy = 0;
735 cb->srcz = 0;
736 cb->w = cur_size->width;
737 cb->h = cur_size->height;
738 cb->d = cur_size->depth;
739
740 suffix->suffixSize = sizeof(*suffix);
741 suffix->maximumOffset = body->guest.pitch*cur_size->height*
742 cur_size->depth*bpp / stride_bpp;
743 suffix->flags.discard = 0;
744 suffix->flags.unsynchronized = 0;
745 suffix->flags.reserved = 0;
746 ++cmd;
747 }
748};
749
750
751static void vmw_hw_surface_destroy(struct vmw_resource *res)
752{
753
754 struct vmw_private *dev_priv = res->dev_priv;
755 struct vmw_surface *srf;
756 void *cmd;
757
758 if (res->id != -1) {
759
760 cmd = vmw_fifo_reserve(dev_priv, vmw_surface_destroy_size());
761 if (unlikely(cmd == NULL)) {
762 DRM_ERROR("Failed reserving FIFO space for surface "
763 "destruction.\n");
764 return;
765 }
766
767 vmw_surface_destroy_encode(res->id, cmd);
768 vmw_fifo_commit(dev_priv, vmw_surface_destroy_size());
769
770 /*
771 * used_memory_size_atomic, or separate lock
772 * to avoid taking dev_priv::cmdbuf_mutex in
773 * the destroy path.
774 */
775
776 mutex_lock(&dev_priv->cmdbuf_mutex);
777 srf = container_of(res, struct vmw_surface, res);
778 dev_priv->used_memory_size -= srf->backup_size;
779 mutex_unlock(&dev_priv->cmdbuf_mutex);
780
781 }
782 vmw_3d_resource_dec(dev_priv, false);
783}
784
785void vmw_surface_res_free(struct vmw_resource *res)
786{
787 struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
788
789 if (srf->backup)
790 ttm_bo_unref(&srf->backup);
791 kfree(srf->offsets);
792 kfree(srf->sizes);
793 kfree(srf->snooper.image);
794 kfree(srf);
795}
796
797
798/**
799 * vmw_surface_do_validate - make a surface available to the device.
800 *
801 * @dev_priv: Pointer to a device private struct.
802 * @srf: Pointer to a struct vmw_surface.
803 *
804 * If the surface doesn't have a hw id, allocate one, and optionally
805 * DMA the backed up surface contents to the device.
806 *
807 * Returns -EBUSY if there wasn't sufficient device resources to
808 * complete the validation. Retry after freeing up resources.
809 *
810 * May return other errors if the kernel is out of guest resources.
811 */
812int vmw_surface_do_validate(struct vmw_private *dev_priv,
813 struct vmw_surface *srf)
814{
815 struct vmw_resource *res = &srf->res;
816 struct list_head val_list;
817 struct ttm_validate_buffer val_buf;
818 uint32_t submit_size;
819 uint8_t *cmd;
820 int ret;
821
822 if (likely(res->id != -1))
823 return 0;
824
825 if (unlikely(dev_priv->used_memory_size + srf->backup_size >=
826 dev_priv->memory_size))
827 return -EBUSY;
828
829 /*
830 * Reserve- and validate the backup DMA bo.
831 */
832
833 if (srf->backup) {
834 INIT_LIST_HEAD(&val_list);
835 val_buf.bo = ttm_bo_reference(srf->backup);
836 val_buf.new_sync_obj_arg = (void *)((unsigned long)
837 DRM_VMW_FENCE_FLAG_EXEC);
838 list_add_tail(&val_buf.head, &val_list);
839 ret = ttm_eu_reserve_buffers(&val_list);
840 if (unlikely(ret != 0))
841 goto out_no_reserve;
842
843 ret = ttm_bo_validate(srf->backup, &vmw_srf_placement,
844 true, false, false);
845 if (unlikely(ret != 0))
846 goto out_no_validate;
847 }
848
849 /*
850 * Alloc id for the resource.
851 */
852
853 ret = vmw_resource_alloc_id(dev_priv, res);
854 if (unlikely(ret != 0)) {
855 DRM_ERROR("Failed to allocate a surface id.\n");
856 goto out_no_id;
857 }
858 if (unlikely(res->id >= SVGA3D_MAX_SURFACE_IDS)) {
859 ret = -EBUSY;
860 goto out_no_fifo;
861 }
862
863
864 /*
865 * Encode surface define- and dma commands.
866 */
867
868 submit_size = vmw_surface_define_size(srf);
869 if (srf->backup)
870 submit_size += vmw_surface_dma_size(srf);
871
872 cmd = vmw_fifo_reserve(dev_priv, submit_size);
873 if (unlikely(cmd == NULL)) {
874 DRM_ERROR("Failed reserving FIFO space for surface "
875 "validation.\n");
876 ret = -ENOMEM;
877 goto out_no_fifo;
878 }
879
880 vmw_surface_define_encode(srf, cmd);
881 if (srf->backup) {
882 SVGAGuestPtr ptr;
883
884 cmd += vmw_surface_define_size(srf);
885 vmw_bo_get_guest_ptr(srf->backup, &ptr);
886 vmw_surface_dma_encode(srf, cmd, &ptr, true);
887 }
888
889 vmw_fifo_commit(dev_priv, submit_size);
890
891 /*
892 * Create a fence object and fence the backup buffer.
893 */
894
895 if (srf->backup) {
896 struct vmw_fence_obj *fence;
897
898 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
899 &fence, NULL);
900 ttm_eu_fence_buffer_objects(&val_list, fence);
901 if (likely(fence != NULL))
902 vmw_fence_obj_unreference(&fence);
903 ttm_bo_unref(&val_buf.bo);
904 ttm_bo_unref(&srf->backup);
905 }
906
907 /*
908 * Surface memory usage accounting.
909 */
910
911 dev_priv->used_memory_size += srf->backup_size;
912
913 return 0;
914
915out_no_fifo:
916 vmw_resource_release_id(res);
917out_no_id:
918out_no_validate:
919 if (srf->backup)
920 ttm_eu_backoff_reservation(&val_list);
921out_no_reserve:
922 if (srf->backup)
923 ttm_bo_unref(&val_buf.bo);
924 return ret;
925}
926
927/**
928 * vmw_surface_evict - Evict a hw surface.
929 *
930 * @dev_priv: Pointer to a device private struct.
931 * @srf: Pointer to a struct vmw_surface
932 *
933 * DMA the contents of a hw surface to a backup guest buffer object,
934 * and destroy the hw surface, releasing its id.
935 */
936int vmw_surface_evict(struct vmw_private *dev_priv,
937 struct vmw_surface *srf)
938{
939 struct vmw_resource *res = &srf->res;
940 struct list_head val_list;
941 struct ttm_validate_buffer val_buf;
942 uint32_t submit_size;
943 uint8_t *cmd;
944 int ret;
945 struct vmw_fence_obj *fence;
946 SVGAGuestPtr ptr;
947
948 BUG_ON(res->id == -1);
949
950 /*
951 * Create a surface backup buffer object.
952 */
953
954 if (!srf->backup) {
955 ret = ttm_bo_create(&dev_priv->bdev, srf->backup_size,
956 ttm_bo_type_device,
957 &vmw_srf_placement, 0, 0, true,
958 NULL, &srf->backup);
959 if (unlikely(ret != 0))
960 return ret;
961 }
962
963 /*
964 * Reserve- and validate the backup DMA bo.
965 */
966
967 INIT_LIST_HEAD(&val_list);
968 val_buf.bo = ttm_bo_reference(srf->backup);
969 val_buf.new_sync_obj_arg = (void *)(unsigned long)
970 DRM_VMW_FENCE_FLAG_EXEC;
971 list_add_tail(&val_buf.head, &val_list);
972 ret = ttm_eu_reserve_buffers(&val_list);
973 if (unlikely(ret != 0))
974 goto out_no_reserve;
975
976 ret = ttm_bo_validate(srf->backup, &vmw_srf_placement,
977 true, false, false);
978 if (unlikely(ret != 0))
979 goto out_no_validate;
980
981
982 /*
983 * Encode the dma- and surface destroy commands.
984 */
985
986 submit_size = vmw_surface_dma_size(srf) + vmw_surface_destroy_size();
987 cmd = vmw_fifo_reserve(dev_priv, submit_size);
988 if (unlikely(cmd == NULL)) {
989 DRM_ERROR("Failed reserving FIFO space for surface "
990 "eviction.\n");
991 ret = -ENOMEM;
992 goto out_no_fifo;
993 }
994
995 vmw_bo_get_guest_ptr(srf->backup, &ptr);
996 vmw_surface_dma_encode(srf, cmd, &ptr, false);
997 cmd += vmw_surface_dma_size(srf);
998 vmw_surface_destroy_encode(res->id, cmd);
999 vmw_fifo_commit(dev_priv, submit_size);
1000
1001 /*
1002 * Surface memory usage accounting.
1003 */
1004
1005 dev_priv->used_memory_size -= srf->backup_size;
1006
1007 /*
1008 * Create a fence object and fence the DMA buffer.
1009 */
1010
1011 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
1012 &fence, NULL);
1013 ttm_eu_fence_buffer_objects(&val_list, fence);
1014 if (likely(fence != NULL))
1015 vmw_fence_obj_unreference(&fence);
1016 ttm_bo_unref(&val_buf.bo);
1017
1018 /*
1019 * Release the surface ID.
1020 */
1021
1022 vmw_resource_release_id(res);
1023
1024 return 0;
1025
1026out_no_fifo:
1027out_no_validate:
1028 if (srf->backup)
1029 ttm_eu_backoff_reservation(&val_list);
1030out_no_reserve:
1031 ttm_bo_unref(&val_buf.bo);
1032 ttm_bo_unref(&srf->backup);
1033 return ret;
1034}
1035
1036
1037/**
1038 * vmw_surface_validate - make a surface available to the device, evicting
1039 * other surfaces if needed.
1040 *
1041 * @dev_priv: Pointer to a device private struct.
1042 * @srf: Pointer to a struct vmw_surface.
1043 *
1044 * Try to validate a surface and if it fails due to limited device resources,
1045 * repeatedly try to evict other surfaces until the request can be
1046 * acommodated.
1047 *
1048 * May return errors if out of resources.
1049 */
1050int vmw_surface_validate(struct vmw_private *dev_priv,
1051 struct vmw_surface *srf)
1052{
1053 int ret;
1054 struct vmw_surface *evict_srf;
1055
1056 do {
1057 write_lock(&dev_priv->resource_lock);
1058 list_del_init(&srf->lru_head);
1059 write_unlock(&dev_priv->resource_lock);
1060
1061 ret = vmw_surface_do_validate(dev_priv, srf);
1062 if (likely(ret != -EBUSY))
1063 break;
1064
1065 write_lock(&dev_priv->resource_lock);
1066 if (list_empty(&dev_priv->surface_lru)) {
1067 DRM_ERROR("Out of device memory for surfaces.\n");
1068 ret = -EBUSY;
1069 write_unlock(&dev_priv->resource_lock);
1070 break;
1071 }
1072
1073 evict_srf = vmw_surface_reference
1074 (list_first_entry(&dev_priv->surface_lru,
1075 struct vmw_surface,
1076 lru_head));
1077 list_del_init(&evict_srf->lru_head);
1078
1079 write_unlock(&dev_priv->resource_lock);
1080 (void) vmw_surface_evict(dev_priv, evict_srf);
1081
1082 vmw_surface_unreference(&evict_srf);
1083
1084 } while (1);
1085
1086 if (unlikely(ret != 0 && srf->res.id != -1)) {
1087 write_lock(&dev_priv->resource_lock);
1088 list_add_tail(&srf->lru_head, &dev_priv->surface_lru);
1089 write_unlock(&dev_priv->resource_lock);
1090 }
1091
1092 return ret;
1093}
1094
1095
1096/**
1097 * vmw_surface_remove_from_lists - Remove surface resources from lookup lists
1098 *
1099 * @res: Pointer to a struct vmw_resource embedded in a struct vmw_surface
1100 *
1101 * As part of the resource destruction, remove the surface from any
1102 * lookup lists.
1103 */
1104static void vmw_surface_remove_from_lists(struct vmw_resource *res)
1105{
1106 struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
1107
1108 list_del_init(&srf->lru_head);
1109}
1110
1111int vmw_surface_init(struct vmw_private *dev_priv,
1112 struct vmw_surface *srf,
1113 void (*res_free) (struct vmw_resource *res))
1114{
1115 int ret;
1116 struct vmw_resource *res = &srf->res;
1117
1118 BUG_ON(res_free == NULL);
1119 INIT_LIST_HEAD(&srf->lru_head);
1120 ret = vmw_resource_init(dev_priv, res, &dev_priv->surface_idr,
1121 VMW_RES_SURFACE, true, res_free,
1122 vmw_surface_remove_from_lists);
1123
1124 if (unlikely(ret != 0))
1125 res_free(res);
1126
1127 /*
1128 * The surface won't be visible to hardware until a
1129 * surface validate.
1130 */
1131
1132 (void) vmw_3d_resource_inc(dev_priv, false);
1133 vmw_resource_activate(res, vmw_hw_surface_destroy);
1134 return ret;
1135}
1136
1137static void vmw_user_surface_free(struct vmw_resource *res)
1138{
1139 struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
1140 struct vmw_user_surface *user_srf =
1141 container_of(srf, struct vmw_user_surface, srf);
1142 struct vmw_private *dev_priv = srf->res.dev_priv;
1143 uint32_t size = user_srf->size;
1144
1145 if (srf->backup)
1146 ttm_bo_unref(&srf->backup);
1147 kfree(srf->offsets);
1148 kfree(srf->sizes);
1149 kfree(srf->snooper.image);
1150 kfree(user_srf);
1151 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
1152}
1153
1154/**
1155 * vmw_resource_unreserve - unreserve resources previously reserved for
1156 * command submission.
1157 *
1158 * @list_head: list of resources to unreserve.
1159 *
1160 * Currently only surfaces are considered, and unreserving a surface
1161 * means putting it back on the device's surface lru list,
1162 * so that it can be evicted if necessary.
1163 * This function traverses the resource list and
1164 * checks whether resources are surfaces, and in that case puts them back
1165 * on the device's surface LRU list.
1166 */
1167void vmw_resource_unreserve(struct list_head *list)
1168{
1169 struct vmw_resource *res;
1170 struct vmw_surface *srf;
1171 rwlock_t *lock = NULL;
1172
1173 list_for_each_entry(res, list, validate_head) {
1174
1175 if (res->res_free != &vmw_surface_res_free &&
1176 res->res_free != &vmw_user_surface_free)
1177 continue;
1178
1179 if (unlikely(lock == NULL)) {
1180 lock = &res->dev_priv->resource_lock;
1181 write_lock(lock);
1182 }
1183
1184 srf = container_of(res, struct vmw_surface, res);
1185 list_del_init(&srf->lru_head);
1186 list_add_tail(&srf->lru_head, &res->dev_priv->surface_lru);
1187 }
1188
1189 if (lock != NULL)
1190 write_unlock(lock);
1191}
1192
1193/**
1194 * Helper function that looks either a surface or dmabuf.
1195 *
1196 * The pointer this pointed at by out_surf and out_buf needs to be null.
1197 */
1198int vmw_user_lookup_handle(struct vmw_private *dev_priv,
1199 struct ttm_object_file *tfile,
1200 uint32_t handle,
1201 struct vmw_surface **out_surf,
1202 struct vmw_dma_buffer **out_buf)
1203{
1204 int ret;
1205
1206 BUG_ON(*out_surf || *out_buf);
1207
1208 ret = vmw_user_surface_lookup_handle(dev_priv, tfile, handle, out_surf);
1209 if (!ret)
1210 return 0;
1211
1212 ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf);
1213 return ret;
1214}
1215
1216
1217int vmw_user_surface_lookup_handle(struct vmw_private *dev_priv,
1218 struct ttm_object_file *tfile,
1219 uint32_t handle, struct vmw_surface **out)
1220{
1221 struct vmw_resource *res;
1222 struct vmw_surface *srf;
1223 struct vmw_user_surface *user_srf;
1224 struct ttm_base_object *base; 291 struct ttm_base_object *base;
292 struct vmw_resource *res;
1225 int ret = -EINVAL; 293 int ret = -EINVAL;
1226 294
1227 base = ttm_base_object_lookup(tfile, handle); 295 base = ttm_base_object_lookup(tfile, handle);
1228 if (unlikely(base == NULL)) 296 if (unlikely(base == NULL))
1229 return -EINVAL; 297 return -EINVAL;
1230 298
1231 if (unlikely(base->object_type != VMW_RES_SURFACE)) 299 if (unlikely(base->object_type != converter->object_type))
1232 goto out_bad_resource; 300 goto out_bad_resource;
1233 301
1234 user_srf = container_of(base, struct vmw_user_surface, base); 302 res = converter->base_obj_to_res(base);
1235 srf = &user_srf->srf;
1236 res = &srf->res;
1237 303
1238 read_lock(&dev_priv->resource_lock); 304 read_lock(&dev_priv->resource_lock);
1239 305 if (!res->avail || res->res_free != converter->res_free) {
1240 if (!res->avail || res->res_free != &vmw_user_surface_free) {
1241 read_unlock(&dev_priv->resource_lock); 306 read_unlock(&dev_priv->resource_lock);
1242 goto out_bad_resource; 307 goto out_bad_resource;
1243 } 308 }
@@ -1245,7 +310,7 @@ int vmw_user_surface_lookup_handle(struct vmw_private *dev_priv,
1245 kref_get(&res->kref); 310 kref_get(&res->kref);
1246 read_unlock(&dev_priv->resource_lock); 311 read_unlock(&dev_priv->resource_lock);
1247 312
1248 *out = srf; 313 *p_res = res;
1249 ret = 0; 314 ret = 0;
1250 315
1251out_bad_resource: 316out_bad_resource:
@@ -1254,286 +319,32 @@ out_bad_resource:
1254 return ret; 319 return ret;
1255} 320}
1256 321
1257static void vmw_user_surface_base_release(struct ttm_base_object **p_base) 322/**
1258{ 323 * Helper function that looks either a surface or dmabuf.
1259 struct ttm_base_object *base = *p_base; 324 *
1260 struct vmw_user_surface *user_srf = 325 * The pointer this pointed at by out_surf and out_buf needs to be null.
1261 container_of(base, struct vmw_user_surface, base); 326 */
1262 struct vmw_resource *res = &user_srf->srf.res; 327int vmw_user_lookup_handle(struct vmw_private *dev_priv,
1263 328 struct ttm_object_file *tfile,
1264 *p_base = NULL; 329 uint32_t handle,
1265 vmw_resource_unreference(&res); 330 struct vmw_surface **out_surf,
1266} 331 struct vmw_dma_buffer **out_buf)
1267
1268int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
1269 struct drm_file *file_priv)
1270{
1271 struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
1272 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1273
1274 return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
1275}
1276
1277int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
1278 struct drm_file *file_priv)
1279{ 332{
1280 struct vmw_private *dev_priv = vmw_priv(dev);
1281 struct vmw_user_surface *user_srf;
1282 struct vmw_surface *srf;
1283 struct vmw_resource *res; 333 struct vmw_resource *res;
1284 struct vmw_resource *tmp;
1285 union drm_vmw_surface_create_arg *arg =
1286 (union drm_vmw_surface_create_arg *)data;
1287 struct drm_vmw_surface_create_req *req = &arg->req;
1288 struct drm_vmw_surface_arg *rep = &arg->rep;
1289 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1290 struct drm_vmw_size __user *user_sizes;
1291 int ret; 334 int ret;
1292 int i, j;
1293 uint32_t cur_bo_offset;
1294 struct drm_vmw_size *cur_size;
1295 struct vmw_surface_offset *cur_offset;
1296 uint32_t stride_bpp;
1297 uint32_t bpp;
1298 uint32_t num_sizes;
1299 uint32_t size;
1300 struct vmw_master *vmaster = vmw_master(file_priv->master);
1301 335
1302 if (unlikely(vmw_user_surface_size == 0)) 336 BUG_ON(*out_surf || *out_buf);
1303 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
1304 128;
1305
1306 num_sizes = 0;
1307 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
1308 num_sizes += req->mip_levels[i];
1309
1310 if (num_sizes > DRM_VMW_MAX_SURFACE_FACES *
1311 DRM_VMW_MAX_MIP_LEVELS)
1312 return -EINVAL;
1313
1314 size = vmw_user_surface_size + 128 +
1315 ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
1316 ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
1317
1318
1319 ret = ttm_read_lock(&vmaster->lock, true);
1320 if (unlikely(ret != 0))
1321 return ret;
1322
1323 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
1324 size, false, true);
1325 if (unlikely(ret != 0)) {
1326 if (ret != -ERESTARTSYS)
1327 DRM_ERROR("Out of graphics memory for surface"
1328 " creation.\n");
1329 goto out_unlock;
1330 }
1331
1332 user_srf = kmalloc(sizeof(*user_srf), GFP_KERNEL);
1333 if (unlikely(user_srf == NULL)) {
1334 ret = -ENOMEM;
1335 goto out_no_user_srf;
1336 }
1337
1338 srf = &user_srf->srf;
1339 res = &srf->res;
1340
1341 srf->flags = req->flags;
1342 srf->format = req->format;
1343 srf->scanout = req->scanout;
1344 srf->backup = NULL;
1345
1346 memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
1347 srf->num_sizes = num_sizes;
1348 user_srf->size = size;
1349
1350 srf->sizes = kmalloc(srf->num_sizes * sizeof(*srf->sizes), GFP_KERNEL);
1351 if (unlikely(srf->sizes == NULL)) {
1352 ret = -ENOMEM;
1353 goto out_no_sizes;
1354 }
1355 srf->offsets = kmalloc(srf->num_sizes * sizeof(*srf->offsets),
1356 GFP_KERNEL);
1357 if (unlikely(srf->sizes == NULL)) {
1358 ret = -ENOMEM;
1359 goto out_no_offsets;
1360 }
1361
1362 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
1363 req->size_addr;
1364
1365 ret = copy_from_user(srf->sizes, user_sizes,
1366 srf->num_sizes * sizeof(*srf->sizes));
1367 if (unlikely(ret != 0)) {
1368 ret = -EFAULT;
1369 goto out_no_copy;
1370 }
1371
1372 cur_bo_offset = 0;
1373 cur_offset = srf->offsets;
1374 cur_size = srf->sizes;
1375
1376 bpp = vmw_sf_bpp[srf->format].bpp;
1377 stride_bpp = vmw_sf_bpp[srf->format].s_bpp;
1378
1379 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
1380 for (j = 0; j < srf->mip_levels[i]; ++j) {
1381 uint32_t stride =
1382 (cur_size->width * stride_bpp + 7) >> 3;
1383
1384 cur_offset->face = i;
1385 cur_offset->mip = j;
1386 cur_offset->bo_offset = cur_bo_offset;
1387 cur_bo_offset += stride * cur_size->height *
1388 cur_size->depth * bpp / stride_bpp;
1389 ++cur_offset;
1390 ++cur_size;
1391 }
1392 }
1393 srf->backup_size = cur_bo_offset;
1394
1395 if (srf->scanout &&
1396 srf->num_sizes == 1 &&
1397 srf->sizes[0].width == 64 &&
1398 srf->sizes[0].height == 64 &&
1399 srf->format == SVGA3D_A8R8G8B8) {
1400
1401 /* allocate image area and clear it */
1402 srf->snooper.image = kzalloc(64 * 64 * 4, GFP_KERNEL);
1403 if (!srf->snooper.image) {
1404 DRM_ERROR("Failed to allocate cursor_image\n");
1405 ret = -ENOMEM;
1406 goto out_no_copy;
1407 }
1408 } else {
1409 srf->snooper.image = NULL;
1410 }
1411 srf->snooper.crtc = NULL;
1412
1413 user_srf->base.shareable = false;
1414 user_srf->base.tfile = NULL;
1415
1416 /**
1417 * From this point, the generic resource management functions
1418 * destroy the object on failure.
1419 */
1420
1421 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
1422 if (unlikely(ret != 0))
1423 goto out_unlock;
1424
1425 tmp = vmw_resource_reference(&srf->res);
1426 ret = ttm_base_object_init(tfile, &user_srf->base,
1427 req->shareable, VMW_RES_SURFACE,
1428 &vmw_user_surface_base_release, NULL);
1429
1430 if (unlikely(ret != 0)) {
1431 vmw_resource_unreference(&tmp);
1432 vmw_resource_unreference(&res);
1433 goto out_unlock;
1434 }
1435
1436 rep->sid = user_srf->base.hash.key;
1437 if (rep->sid == SVGA3D_INVALID_ID)
1438 DRM_ERROR("Created bad Surface ID.\n");
1439
1440 vmw_resource_unreference(&res);
1441
1442 ttm_read_unlock(&vmaster->lock);
1443 return 0;
1444out_no_copy:
1445 kfree(srf->offsets);
1446out_no_offsets:
1447 kfree(srf->sizes);
1448out_no_sizes:
1449 kfree(user_srf);
1450out_no_user_srf:
1451 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
1452out_unlock:
1453 ttm_read_unlock(&vmaster->lock);
1454 return ret;
1455}
1456
1457int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
1458 struct drm_file *file_priv)
1459{
1460 union drm_vmw_surface_reference_arg *arg =
1461 (union drm_vmw_surface_reference_arg *)data;
1462 struct drm_vmw_surface_arg *req = &arg->req;
1463 struct drm_vmw_surface_create_req *rep = &arg->rep;
1464 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1465 struct vmw_surface *srf;
1466 struct vmw_user_surface *user_srf;
1467 struct drm_vmw_size __user *user_sizes;
1468 struct ttm_base_object *base;
1469 int ret = -EINVAL;
1470
1471 base = ttm_base_object_lookup(tfile, req->sid);
1472 if (unlikely(base == NULL)) {
1473 DRM_ERROR("Could not find surface to reference.\n");
1474 return -EINVAL;
1475 }
1476
1477 if (unlikely(base->object_type != VMW_RES_SURFACE))
1478 goto out_bad_resource;
1479
1480 user_srf = container_of(base, struct vmw_user_surface, base);
1481 srf = &user_srf->srf;
1482
1483 ret = ttm_ref_object_add(tfile, &user_srf->base, TTM_REF_USAGE, NULL);
1484 if (unlikely(ret != 0)) {
1485 DRM_ERROR("Could not add a reference to a surface.\n");
1486 goto out_no_reference;
1487 }
1488
1489 rep->flags = srf->flags;
1490 rep->format = srf->format;
1491 memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
1492 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
1493 rep->size_addr;
1494 337
1495 if (user_sizes) 338 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, handle,
1496 ret = copy_to_user(user_sizes, srf->sizes, 339 user_surface_converter,
1497 srf->num_sizes * sizeof(*srf->sizes)); 340 &res);
1498 if (unlikely(ret != 0)) { 341 if (!ret) {
1499 DRM_ERROR("copy_to_user failed %p %u\n", 342 *out_surf = vmw_res_to_srf(res);
1500 user_sizes, srf->num_sizes); 343 return 0;
1501 ret = -EFAULT;
1502 } 344 }
1503out_bad_resource:
1504out_no_reference:
1505 ttm_base_object_unref(&base);
1506
1507 return ret;
1508}
1509
1510int vmw_surface_check(struct vmw_private *dev_priv,
1511 struct ttm_object_file *tfile,
1512 uint32_t handle, int *id)
1513{
1514 struct ttm_base_object *base;
1515 struct vmw_user_surface *user_srf;
1516
1517 int ret = -EPERM;
1518
1519 base = ttm_base_object_lookup(tfile, handle);
1520 if (unlikely(base == NULL))
1521 return -EINVAL;
1522 345
1523 if (unlikely(base->object_type != VMW_RES_SURFACE)) 346 *out_surf = NULL;
1524 goto out_bad_surface; 347 ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf);
1525
1526 user_srf = container_of(base, struct vmw_user_surface, base);
1527 *id = user_srf->srf.res.id;
1528 ret = 0;
1529
1530out_bad_surface:
1531 /**
1532 * FIXME: May deadlock here when called from the
1533 * command parsing code.
1534 */
1535
1536 ttm_base_object_unref(&base);
1537 return ret; 348 return ret;
1538} 349}
1539 350
@@ -1562,11 +373,11 @@ int vmw_dmabuf_init(struct vmw_private *dev_priv,
1562 acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct vmw_dma_buffer)); 373 acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct vmw_dma_buffer));
1563 memset(vmw_bo, 0, sizeof(*vmw_bo)); 374 memset(vmw_bo, 0, sizeof(*vmw_bo));
1564 375
1565 INIT_LIST_HEAD(&vmw_bo->validate_list); 376 INIT_LIST_HEAD(&vmw_bo->res_list);
1566 377
1567 ret = ttm_bo_init(bdev, &vmw_bo->base, size, 378 ret = ttm_bo_init(bdev, &vmw_bo->base, size,
1568 ttm_bo_type_device, placement, 379 ttm_bo_type_device, placement,
1569 0, 0, interruptible, 380 0, interruptible,
1570 NULL, acc_size, NULL, bo_free); 381 NULL, acc_size, NULL, bo_free);
1571 return ret; 382 return ret;
1572} 383}
@@ -1575,7 +386,7 @@ static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo)
1575{ 386{
1576 struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo); 387 struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo);
1577 388
1578 kfree(vmw_user_bo); 389 ttm_base_object_kfree(vmw_user_bo, base);
1579} 390}
1580 391
1581static void vmw_user_dmabuf_release(struct ttm_base_object **p_base) 392static void vmw_user_dmabuf_release(struct ttm_base_object **p_base)
@@ -1594,6 +405,79 @@ static void vmw_user_dmabuf_release(struct ttm_base_object **p_base)
1594 ttm_bo_unref(&bo); 405 ttm_bo_unref(&bo);
1595} 406}
1596 407
408/**
409 * vmw_user_dmabuf_alloc - Allocate a user dma buffer
410 *
411 * @dev_priv: Pointer to a struct device private.
412 * @tfile: Pointer to a struct ttm_object_file on which to register the user
413 * object.
414 * @size: Size of the dma buffer.
415 * @shareable: Boolean whether the buffer is shareable with other open files.
416 * @handle: Pointer to where the handle value should be assigned.
417 * @p_dma_buf: Pointer to where the refcounted struct vmw_dma_buffer pointer
418 * should be assigned.
419 */
420int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
421 struct ttm_object_file *tfile,
422 uint32_t size,
423 bool shareable,
424 uint32_t *handle,
425 struct vmw_dma_buffer **p_dma_buf)
426{
427 struct vmw_user_dma_buffer *user_bo;
428 struct ttm_buffer_object *tmp;
429 int ret;
430
431 user_bo = kzalloc(sizeof(*user_bo), GFP_KERNEL);
432 if (unlikely(user_bo == NULL)) {
433 DRM_ERROR("Failed to allocate a buffer.\n");
434 return -ENOMEM;
435 }
436
437 ret = vmw_dmabuf_init(dev_priv, &user_bo->dma, size,
438 &vmw_vram_sys_placement, true,
439 &vmw_user_dmabuf_destroy);
440 if (unlikely(ret != 0))
441 return ret;
442
443 tmp = ttm_bo_reference(&user_bo->dma.base);
444 ret = ttm_base_object_init(tfile,
445 &user_bo->base,
446 shareable,
447 ttm_buffer_type,
448 &vmw_user_dmabuf_release, NULL);
449 if (unlikely(ret != 0)) {
450 ttm_bo_unref(&tmp);
451 goto out_no_base_object;
452 }
453
454 *p_dma_buf = &user_bo->dma;
455 *handle = user_bo->base.hash.key;
456
457out_no_base_object:
458 return ret;
459}
460
461/**
462 * vmw_user_dmabuf_verify_access - verify access permissions on this
463 * buffer object.
464 *
465 * @bo: Pointer to the buffer object being accessed
466 * @tfile: Identifying the caller.
467 */
468int vmw_user_dmabuf_verify_access(struct ttm_buffer_object *bo,
469 struct ttm_object_file *tfile)
470{
471 struct vmw_user_dma_buffer *vmw_user_bo;
472
473 if (unlikely(bo->destroy != vmw_user_dmabuf_destroy))
474 return -EPERM;
475
476 vmw_user_bo = vmw_user_dma_buffer(bo);
477 return (vmw_user_bo->base.tfile == tfile ||
478 vmw_user_bo->base.shareable) ? 0 : -EPERM;
479}
480
1597int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data, 481int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
1598 struct drm_file *file_priv) 482 struct drm_file *file_priv)
1599{ 483{
@@ -1602,44 +486,27 @@ int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
1602 (union drm_vmw_alloc_dmabuf_arg *)data; 486 (union drm_vmw_alloc_dmabuf_arg *)data;
1603 struct drm_vmw_alloc_dmabuf_req *req = &arg->req; 487 struct drm_vmw_alloc_dmabuf_req *req = &arg->req;
1604 struct drm_vmw_dmabuf_rep *rep = &arg->rep; 488 struct drm_vmw_dmabuf_rep *rep = &arg->rep;
1605 struct vmw_user_dma_buffer *vmw_user_bo; 489 struct vmw_dma_buffer *dma_buf;
1606 struct ttm_buffer_object *tmp; 490 uint32_t handle;
1607 struct vmw_master *vmaster = vmw_master(file_priv->master); 491 struct vmw_master *vmaster = vmw_master(file_priv->master);
1608 int ret; 492 int ret;
1609 493
1610 vmw_user_bo = kzalloc(sizeof(*vmw_user_bo), GFP_KERNEL);
1611 if (unlikely(vmw_user_bo == NULL))
1612 return -ENOMEM;
1613
1614 ret = ttm_read_lock(&vmaster->lock, true); 494 ret = ttm_read_lock(&vmaster->lock, true);
1615 if (unlikely(ret != 0)) { 495 if (unlikely(ret != 0))
1616 kfree(vmw_user_bo);
1617 return ret; 496 return ret;
1618 }
1619 497
1620 ret = vmw_dmabuf_init(dev_priv, &vmw_user_bo->dma, req->size, 498 ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
1621 &vmw_vram_sys_placement, true, 499 req->size, false, &handle, &dma_buf);
1622 &vmw_user_dmabuf_destroy);
1623 if (unlikely(ret != 0)) 500 if (unlikely(ret != 0))
1624 goto out_no_dmabuf; 501 goto out_no_dmabuf;
1625 502
1626 tmp = ttm_bo_reference(&vmw_user_bo->dma.base); 503 rep->handle = handle;
1627 ret = ttm_base_object_init(vmw_fpriv(file_priv)->tfile, 504 rep->map_handle = dma_buf->base.addr_space_offset;
1628 &vmw_user_bo->base, 505 rep->cur_gmr_id = handle;
1629 false, 506 rep->cur_gmr_offset = 0;
1630 ttm_buffer_type, 507
1631 &vmw_user_dmabuf_release, NULL); 508 vmw_dmabuf_unreference(&dma_buf);
1632 if (unlikely(ret != 0))
1633 goto out_no_base_object;
1634 else {
1635 rep->handle = vmw_user_bo->base.hash.key;
1636 rep->map_handle = vmw_user_bo->dma.base.addr_space_offset;
1637 rep->cur_gmr_id = vmw_user_bo->base.hash.key;
1638 rep->cur_gmr_offset = 0;
1639 }
1640 509
1641out_no_base_object:
1642 ttm_bo_unref(&tmp);
1643out_no_dmabuf: 510out_no_dmabuf:
1644 ttm_read_unlock(&vmaster->lock); 511 ttm_read_unlock(&vmaster->lock);
1645 512
@@ -1657,27 +524,6 @@ int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
1657 TTM_REF_USAGE); 524 TTM_REF_USAGE);
1658} 525}
1659 526
1660uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
1661 uint32_t cur_validate_node)
1662{
1663 struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
1664
1665 if (likely(vmw_bo->on_validate_list))
1666 return vmw_bo->cur_validate_node;
1667
1668 vmw_bo->cur_validate_node = cur_validate_node;
1669 vmw_bo->on_validate_list = true;
1670
1671 return cur_validate_node;
1672}
1673
1674void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo)
1675{
1676 struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
1677
1678 vmw_bo->on_validate_list = false;
1679}
1680
1681int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile, 527int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
1682 uint32_t handle, struct vmw_dma_buffer **out) 528 uint32_t handle, struct vmw_dma_buffer **out)
1683{ 529{
@@ -1706,6 +552,18 @@ int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
1706 return 0; 552 return 0;
1707} 553}
1708 554
555int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
556 struct vmw_dma_buffer *dma_buf)
557{
558 struct vmw_user_dma_buffer *user_bo;
559
560 if (dma_buf->base.destroy != vmw_user_dmabuf_destroy)
561 return -EINVAL;
562
563 user_bo = container_of(dma_buf, struct vmw_user_dma_buffer, dma);
564 return ttm_ref_object_add(tfile, &user_bo->base, TTM_REF_USAGE, NULL);
565}
566
1709/* 567/*
1710 * Stream management 568 * Stream management
1711 */ 569 */
@@ -1730,8 +588,8 @@ static int vmw_stream_init(struct vmw_private *dev_priv,
1730 struct vmw_resource *res = &stream->res; 588 struct vmw_resource *res = &stream->res;
1731 int ret; 589 int ret;
1732 590
1733 ret = vmw_resource_init(dev_priv, res, &dev_priv->stream_idr, 591 ret = vmw_resource_init(dev_priv, res, false, res_free,
1734 VMW_RES_STREAM, false, res_free, NULL); 592 &vmw_stream_func);
1735 593
1736 if (unlikely(ret != 0)) { 594 if (unlikely(ret != 0)) {
1737 if (res_free == NULL) 595 if (res_free == NULL)
@@ -1753,17 +611,13 @@ static int vmw_stream_init(struct vmw_private *dev_priv,
1753 return 0; 611 return 0;
1754} 612}
1755 613
1756/**
1757 * User-space context management:
1758 */
1759
1760static void vmw_user_stream_free(struct vmw_resource *res) 614static void vmw_user_stream_free(struct vmw_resource *res)
1761{ 615{
1762 struct vmw_user_stream *stream = 616 struct vmw_user_stream *stream =
1763 container_of(res, struct vmw_user_stream, stream.res); 617 container_of(res, struct vmw_user_stream, stream.res);
1764 struct vmw_private *dev_priv = res->dev_priv; 618 struct vmw_private *dev_priv = res->dev_priv;
1765 619
1766 kfree(stream); 620 ttm_base_object_kfree(stream, base);
1767 ttm_mem_global_free(vmw_mem_glob(dev_priv), 621 ttm_mem_global_free(vmw_mem_glob(dev_priv),
1768 vmw_user_stream_size); 622 vmw_user_stream_size);
1769} 623}
@@ -1792,9 +646,11 @@ int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
1792 struct vmw_user_stream *stream; 646 struct vmw_user_stream *stream;
1793 struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data; 647 struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data;
1794 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 648 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
649 struct idr *idr = &dev_priv->res_idr[vmw_res_stream];
1795 int ret = 0; 650 int ret = 0;
1796 651
1797 res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, arg->stream_id); 652
653 res = vmw_resource_lookup(dev_priv, idr, arg->stream_id);
1798 if (unlikely(res == NULL)) 654 if (unlikely(res == NULL))
1799 return -EINVAL; 655 return -EINVAL;
1800 656
@@ -1895,7 +751,8 @@ int vmw_user_stream_lookup(struct vmw_private *dev_priv,
1895 struct vmw_resource *res; 751 struct vmw_resource *res;
1896 int ret; 752 int ret;
1897 753
1898 res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, *inout_id); 754 res = vmw_resource_lookup(dev_priv, &dev_priv->res_idr[vmw_res_stream],
755 *inout_id);
1899 if (unlikely(res == NULL)) 756 if (unlikely(res == NULL))
1900 return -EINVAL; 757 return -EINVAL;
1901 758
@@ -1990,3 +847,453 @@ int vmw_dumb_destroy(struct drm_file *file_priv,
1990 return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, 847 return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
1991 handle, TTM_REF_USAGE); 848 handle, TTM_REF_USAGE);
1992} 849}
850
851/**
852 * vmw_resource_buf_alloc - Allocate a backup buffer for a resource.
853 *
854 * @res: The resource for which to allocate a backup buffer.
855 * @interruptible: Whether any sleeps during allocation should be
856 * performed while interruptible.
857 */
858static int vmw_resource_buf_alloc(struct vmw_resource *res,
859 bool interruptible)
860{
861 unsigned long size =
862 (res->backup_size + PAGE_SIZE - 1) & PAGE_MASK;
863 struct vmw_dma_buffer *backup;
864 int ret;
865
866 if (likely(res->backup)) {
867 BUG_ON(res->backup->base.num_pages * PAGE_SIZE < size);
868 return 0;
869 }
870
871 backup = kzalloc(sizeof(*backup), GFP_KERNEL);
872 if (unlikely(backup == NULL))
873 return -ENOMEM;
874
875 ret = vmw_dmabuf_init(res->dev_priv, backup, res->backup_size,
876 res->func->backup_placement,
877 interruptible,
878 &vmw_dmabuf_bo_free);
879 if (unlikely(ret != 0))
880 goto out_no_dmabuf;
881
882 res->backup = backup;
883
884out_no_dmabuf:
885 return ret;
886}
887
888/**
889 * vmw_resource_do_validate - Make a resource up-to-date and visible
890 * to the device.
891 *
892 * @res: The resource to make visible to the device.
893 * @val_buf: Information about a buffer possibly
894 * containing backup data if a bind operation is needed.
895 *
896 * On hardware resource shortage, this function returns -EBUSY and
897 * should be retried once resources have been freed up.
898 */
899static int vmw_resource_do_validate(struct vmw_resource *res,
900 struct ttm_validate_buffer *val_buf)
901{
902 int ret = 0;
903 const struct vmw_res_func *func = res->func;
904
905 if (unlikely(res->id == -1)) {
906 ret = func->create(res);
907 if (unlikely(ret != 0))
908 return ret;
909 }
910
911 if (func->bind &&
912 ((func->needs_backup && list_empty(&res->mob_head) &&
913 val_buf->bo != NULL) ||
914 (!func->needs_backup && val_buf->bo != NULL))) {
915 ret = func->bind(res, val_buf);
916 if (unlikely(ret != 0))
917 goto out_bind_failed;
918 if (func->needs_backup)
919 list_add_tail(&res->mob_head, &res->backup->res_list);
920 }
921
922 /*
923 * Only do this on write operations, and move to
924 * vmw_resource_unreserve if it can be called after
925 * backup buffers have been unreserved. Otherwise
926 * sort out locking.
927 */
928 res->res_dirty = true;
929
930 return 0;
931
932out_bind_failed:
933 func->destroy(res);
934
935 return ret;
936}
937
938/**
939 * vmw_resource_unreserve - Unreserve a resource previously reserved for
940 * command submission.
941 *
942 * @res: Pointer to the struct vmw_resource to unreserve.
943 * @new_backup: Pointer to new backup buffer if command submission
944 * switched.
945 * @new_backup_offset: New backup offset if @new_backup is !NULL.
946 *
947 * Currently unreserving a resource means putting it back on the device's
948 * resource lru list, so that it can be evicted if necessary.
949 */
950void vmw_resource_unreserve(struct vmw_resource *res,
951 struct vmw_dma_buffer *new_backup,
952 unsigned long new_backup_offset)
953{
954 struct vmw_private *dev_priv = res->dev_priv;
955
956 if (!list_empty(&res->lru_head))
957 return;
958
959 if (new_backup && new_backup != res->backup) {
960
961 if (res->backup) {
962 BUG_ON(atomic_read(&res->backup->base.reserved) == 0);
963 list_del_init(&res->mob_head);
964 vmw_dmabuf_unreference(&res->backup);
965 }
966
967 res->backup = vmw_dmabuf_reference(new_backup);
968 BUG_ON(atomic_read(&new_backup->base.reserved) == 0);
969 list_add_tail(&res->mob_head, &new_backup->res_list);
970 }
971 if (new_backup)
972 res->backup_offset = new_backup_offset;
973
974 if (!res->func->may_evict)
975 return;
976
977 write_lock(&dev_priv->resource_lock);
978 list_add_tail(&res->lru_head,
979 &res->dev_priv->res_lru[res->func->res_type]);
980 write_unlock(&dev_priv->resource_lock);
981}
982
983/**
984 * vmw_resource_check_buffer - Check whether a backup buffer is needed
985 * for a resource and in that case, allocate
986 * one, reserve and validate it.
987 *
988 * @res: The resource for which to allocate a backup buffer.
989 * @interruptible: Whether any sleeps during allocation should be
990 * performed while interruptible.
991 * @val_buf: On successful return contains data about the
992 * reserved and validated backup buffer.
993 */
994int vmw_resource_check_buffer(struct vmw_resource *res,
995 bool interruptible,
996 struct ttm_validate_buffer *val_buf)
997{
998 struct list_head val_list;
999 bool backup_dirty = false;
1000 int ret;
1001
1002 if (unlikely(res->backup == NULL)) {
1003 ret = vmw_resource_buf_alloc(res, interruptible);
1004 if (unlikely(ret != 0))
1005 return ret;
1006 }
1007
1008 INIT_LIST_HEAD(&val_list);
1009 val_buf->bo = ttm_bo_reference(&res->backup->base);
1010 list_add_tail(&val_buf->head, &val_list);
1011 ret = ttm_eu_reserve_buffers(&val_list);
1012 if (unlikely(ret != 0))
1013 goto out_no_reserve;
1014
1015 if (res->func->needs_backup && list_empty(&res->mob_head))
1016 return 0;
1017
1018 backup_dirty = res->backup_dirty;
1019 ret = ttm_bo_validate(&res->backup->base,
1020 res->func->backup_placement,
1021 true, false);
1022
1023 if (unlikely(ret != 0))
1024 goto out_no_validate;
1025
1026 return 0;
1027
1028out_no_validate:
1029 ttm_eu_backoff_reservation(&val_list);
1030out_no_reserve:
1031 ttm_bo_unref(&val_buf->bo);
1032 if (backup_dirty)
1033 vmw_dmabuf_unreference(&res->backup);
1034
1035 return ret;
1036}
1037
1038/**
1039 * vmw_resource_reserve - Reserve a resource for command submission
1040 *
1041 * @res: The resource to reserve.
1042 *
1043 * This function takes the resource off the LRU list and make sure
1044 * a backup buffer is present for guest-backed resources. However,
1045 * the buffer may not be bound to the resource at this point.
1046 *
1047 */
1048int vmw_resource_reserve(struct vmw_resource *res, bool no_backup)
1049{
1050 struct vmw_private *dev_priv = res->dev_priv;
1051 int ret;
1052
1053 write_lock(&dev_priv->resource_lock);
1054 list_del_init(&res->lru_head);
1055 write_unlock(&dev_priv->resource_lock);
1056
1057 if (res->func->needs_backup && res->backup == NULL &&
1058 !no_backup) {
1059 ret = vmw_resource_buf_alloc(res, true);
1060 if (unlikely(ret != 0))
1061 return ret;
1062 }
1063
1064 return 0;
1065}
1066
1067/**
1068 * vmw_resource_backoff_reservation - Unreserve and unreference a
1069 * backup buffer
1070 *.
1071 * @val_buf: Backup buffer information.
1072 */
1073void vmw_resource_backoff_reservation(struct ttm_validate_buffer *val_buf)
1074{
1075 struct list_head val_list;
1076
1077 if (likely(val_buf->bo == NULL))
1078 return;
1079
1080 INIT_LIST_HEAD(&val_list);
1081 list_add_tail(&val_buf->head, &val_list);
1082 ttm_eu_backoff_reservation(&val_list);
1083 ttm_bo_unref(&val_buf->bo);
1084}
1085
1086/**
1087 * vmw_resource_do_evict - Evict a resource, and transfer its data
1088 * to a backup buffer.
1089 *
1090 * @res: The resource to evict.
1091 */
1092int vmw_resource_do_evict(struct vmw_resource *res)
1093{
1094 struct ttm_validate_buffer val_buf;
1095 const struct vmw_res_func *func = res->func;
1096 int ret;
1097
1098 BUG_ON(!func->may_evict);
1099
1100 val_buf.bo = NULL;
1101 ret = vmw_resource_check_buffer(res, true, &val_buf);
1102 if (unlikely(ret != 0))
1103 return ret;
1104
1105 if (unlikely(func->unbind != NULL &&
1106 (!func->needs_backup || !list_empty(&res->mob_head)))) {
1107 ret = func->unbind(res, res->res_dirty, &val_buf);
1108 if (unlikely(ret != 0))
1109 goto out_no_unbind;
1110 list_del_init(&res->mob_head);
1111 }
1112 ret = func->destroy(res);
1113 res->backup_dirty = true;
1114 res->res_dirty = false;
1115out_no_unbind:
1116 vmw_resource_backoff_reservation(&val_buf);
1117
1118 return ret;
1119}
1120
1121
1122/**
1123 * vmw_resource_validate - Make a resource up-to-date and visible
1124 * to the device.
1125 *
1126 * @res: The resource to make visible to the device.
1127 *
1128 * On succesful return, any backup DMA buffer pointed to by @res->backup will
1129 * be reserved and validated.
1130 * On hardware resource shortage, this function will repeatedly evict
1131 * resources of the same type until the validation succeeds.
1132 */
1133int vmw_resource_validate(struct vmw_resource *res)
1134{
1135 int ret;
1136 struct vmw_resource *evict_res;
1137 struct vmw_private *dev_priv = res->dev_priv;
1138 struct list_head *lru_list = &dev_priv->res_lru[res->func->res_type];
1139 struct ttm_validate_buffer val_buf;
1140
1141 if (likely(!res->func->may_evict))
1142 return 0;
1143
1144 val_buf.bo = NULL;
1145 if (res->backup)
1146 val_buf.bo = &res->backup->base;
1147 do {
1148 ret = vmw_resource_do_validate(res, &val_buf);
1149 if (likely(ret != -EBUSY))
1150 break;
1151
1152 write_lock(&dev_priv->resource_lock);
1153 if (list_empty(lru_list) || !res->func->may_evict) {
1154 DRM_ERROR("Out of device device id entries "
1155 "for %s.\n", res->func->type_name);
1156 ret = -EBUSY;
1157 write_unlock(&dev_priv->resource_lock);
1158 break;
1159 }
1160
1161 evict_res = vmw_resource_reference
1162 (list_first_entry(lru_list, struct vmw_resource,
1163 lru_head));
1164 list_del_init(&evict_res->lru_head);
1165
1166 write_unlock(&dev_priv->resource_lock);
1167 vmw_resource_do_evict(evict_res);
1168 vmw_resource_unreference(&evict_res);
1169 } while (1);
1170
1171 if (unlikely(ret != 0))
1172 goto out_no_validate;
1173 else if (!res->func->needs_backup && res->backup) {
1174 list_del_init(&res->mob_head);
1175 vmw_dmabuf_unreference(&res->backup);
1176 }
1177
1178 return 0;
1179
1180out_no_validate:
1181 return ret;
1182}
1183
1184/**
1185 * vmw_fence_single_bo - Utility function to fence a single TTM buffer
1186 * object without unreserving it.
1187 *
1188 * @bo: Pointer to the struct ttm_buffer_object to fence.
1189 * @fence: Pointer to the fence. If NULL, this function will
1190 * insert a fence into the command stream..
1191 *
1192 * Contrary to the ttm_eu version of this function, it takes only
1193 * a single buffer object instead of a list, and it also doesn't
1194 * unreserve the buffer object, which needs to be done separately.
1195 */
1196void vmw_fence_single_bo(struct ttm_buffer_object *bo,
1197 struct vmw_fence_obj *fence)
1198{
1199 struct ttm_bo_device *bdev = bo->bdev;
1200 struct ttm_bo_driver *driver = bdev->driver;
1201 struct vmw_fence_obj *old_fence_obj;
1202 struct vmw_private *dev_priv =
1203 container_of(bdev, struct vmw_private, bdev);
1204
1205 if (fence == NULL)
1206 vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
1207 else
1208 driver->sync_obj_ref(fence);
1209
1210 spin_lock(&bdev->fence_lock);
1211
1212 old_fence_obj = bo->sync_obj;
1213 bo->sync_obj = fence;
1214
1215 spin_unlock(&bdev->fence_lock);
1216
1217 if (old_fence_obj)
1218 vmw_fence_obj_unreference(&old_fence_obj);
1219}
1220
1221/**
1222 * vmw_resource_move_notify - TTM move_notify_callback
1223 *
1224 * @bo: The TTM buffer object about to move.
1225 * @mem: The truct ttm_mem_reg indicating to what memory
1226 * region the move is taking place.
1227 *
1228 * For now does nothing.
1229 */
1230void vmw_resource_move_notify(struct ttm_buffer_object *bo,
1231 struct ttm_mem_reg *mem)
1232{
1233}
1234
1235/**
1236 * vmw_resource_needs_backup - Return whether a resource needs a backup buffer.
1237 *
1238 * @res: The resource being queried.
1239 */
1240bool vmw_resource_needs_backup(const struct vmw_resource *res)
1241{
1242 return res->func->needs_backup;
1243}
1244
1245/**
1246 * vmw_resource_evict_type - Evict all resources of a specific type
1247 *
1248 * @dev_priv: Pointer to a device private struct
1249 * @type: The resource type to evict
1250 *
1251 * To avoid thrashing starvation or as part of the hibernation sequence,
1252 * evict all evictable resources of a specific type.
1253 */
1254static void vmw_resource_evict_type(struct vmw_private *dev_priv,
1255 enum vmw_res_type type)
1256{
1257 struct list_head *lru_list = &dev_priv->res_lru[type];
1258 struct vmw_resource *evict_res;
1259
1260 do {
1261 write_lock(&dev_priv->resource_lock);
1262
1263 if (list_empty(lru_list))
1264 goto out_unlock;
1265
1266 evict_res = vmw_resource_reference(
1267 list_first_entry(lru_list, struct vmw_resource,
1268 lru_head));
1269 list_del_init(&evict_res->lru_head);
1270 write_unlock(&dev_priv->resource_lock);
1271 vmw_resource_do_evict(evict_res);
1272 vmw_resource_unreference(&evict_res);
1273 } while (1);
1274
1275out_unlock:
1276 write_unlock(&dev_priv->resource_lock);
1277}
1278
1279/**
1280 * vmw_resource_evict_all - Evict all evictable resources
1281 *
1282 * @dev_priv: Pointer to a device private struct
1283 *
1284 * To avoid thrashing starvation or as part of the hibernation sequence,
1285 * evict all evictable resources. In particular this means that all
1286 * guest-backed resources that are registered with the device are
1287 * evicted and the OTable becomes clean.
1288 */
1289void vmw_resource_evict_all(struct vmw_private *dev_priv)
1290{
1291 enum vmw_res_type type;
1292
1293 mutex_lock(&dev_priv->cmdbuf_mutex);
1294
1295 for (type = 0; type < vmw_res_max; ++type)
1296 vmw_resource_evict_type(dev_priv, type);
1297
1298 mutex_unlock(&dev_priv->cmdbuf_mutex);
1299}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 08:47:01 -0500