vbox_ttm.c@ 87092

Last change on this file since 87092 was 87092, checked in by vboxsync, 4 years ago
Additions/linux/drm: Adjustment for Linux 5.10.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 16.8 KB

Line
1	/* $Id: vbox_ttm.c 87092 2020-12-15 22:29:56Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2020 Oracle Corporation
8	* This file is based on ast_ttm.c
9	* Copyright 2012 Red Hat Inc.
10	*
11	* Permission is hereby granted, free of charge, to any person obtaining a
12	* copy of this software and associated documentation files (the
13	* "Software"), to deal in the Software without restriction, including
14	* without limitation the rights to use, copy, modify, merge, publish,
15	* distribute, sub license, and/or sell copies of the Software, and to
16	* permit persons to whom the Software is furnished to do so, subject to
17	* the following conditions:
18	*
19	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
22	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
23	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
24	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
25	* USE OR OTHER DEALINGS IN THE SOFTWARE.
26	*
27	* The above copyright notice and this permission notice (including the
28	* next paragraph) shall be included in all copies or substantial portions
29	* of the Software.
30	*
31	*
32	* Authors: Dave Airlie <[email protected]>
33	* Michael Thayer <[email protected]>
34	*/
35	#include "vbox_drv.h"
36	#include <drm/ttm/ttm_page_alloc.h>
37
38	#if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
39	#define PLACEMENT_FLAGS(placement) (placement)
40	#else
41	#define PLACEMENT_FLAGS(placement) ((placement).flags)
42	#endif
43
44
45	static inline struct vbox_private vbox_bdev(struct ttm_bo_device bd)
46	{
47	return container_of(bd, struct vbox_private, ttm.bdev);
48	}
49
50	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
51	static int vbox_ttm_mem_global_init(struct drm_global_reference *ref)
52	{
53	return ttm_mem_global_init(ref->object);
54	}
55
56	static void vbox_ttm_mem_global_release(struct drm_global_reference *ref)
57	{
58	ttm_mem_global_release(ref->object);
59	}
60
61	/**
62	* Adds the vbox memory manager object/structures to the global memory manager.
63	*/
64	static int vbox_ttm_global_init(struct vbox_private *vbox)
65	{
66	struct drm_global_reference *global_ref;
67	int ret;
68
69	#if RTLNX_VER_MAX(5,0,0)
70	global_ref = &vbox->ttm.mem_global_ref;
71	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
72	global_ref->size = sizeof(struct ttm_mem_global);
73	global_ref->init = &vbox_ttm_mem_global_init;
74	global_ref->release = &vbox_ttm_mem_global_release;
75	ret = drm_global_item_ref(global_ref);
76	if (ret) {
77	DRM_ERROR("Failed setting up TTM memory subsystem.\n");
78	return ret;
79	}
80
81	vbox->ttm.bo_global_ref.mem_glob = vbox->ttm.mem_global_ref.object;
82	#endif
83	global_ref = &vbox->ttm.bo_global_ref.ref;
84	global_ref->global_type = DRM_GLOBAL_TTM_BO;
85	global_ref->size = sizeof(struct ttm_bo_global);
86	global_ref->init = &ttm_bo_global_init;
87	global_ref->release = &ttm_bo_global_release;
88
89	ret = drm_global_item_ref(global_ref);
90	if (ret) {
91	DRM_ERROR("Failed setting up TTM BO subsystem.\n");
92	#if RTLNX_VER_MAX(5,0,0)
93	drm_global_item_unref(&vbox->ttm.mem_global_ref);
94	#endif
95	return ret;
96	}
97
98	return 0;
99	}
100
101	/**
102	* Removes the vbox memory manager object from the global memory manager.
103	*/
104	static void vbox_ttm_global_release(struct vbox_private *vbox)
105	{
106	drm_global_item_unref(&vbox->ttm.bo_global_ref.ref);
107	drm_global_item_unref(&vbox->ttm.mem_global_ref);
108	}
109	#endif
110
111	static void vbox_bo_ttm_destroy(struct ttm_buffer_object *tbo)
112	{
113	struct vbox_bo *bo;
114
115	bo = container_of(tbo, struct vbox_bo, bo);
116
117	drm_gem_object_release(&bo->gem);
118	kfree(bo);
119	}
120
121	static bool vbox_ttm_bo_is_vbox_bo(struct ttm_buffer_object *bo)
122	{
123	if (bo->destroy == &vbox_bo_ttm_destroy)
124	return true;
125
126	return false;
127	}
128
129	#if RTLNX_VER_MAX(5,10,0)
130	static int
131	vbox_bo_init_mem_type(struct ttm_bo_device *bdev, u32 type,
132	struct ttm_mem_type_manager *man)
133	{
134	switch (type) {
135	case TTM_PL_SYSTEM:
136	man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
137	man->available_caching = TTM_PL_MASK_CACHING;
138	man->default_caching = TTM_PL_FLAG_CACHED;
139	break;
140	case TTM_PL_VRAM:
141	man->func = &ttm_bo_manager_func;
142	man->flags = TTM_MEMTYPE_FLAG_FIXED \| TTM_MEMTYPE_FLAG_MAPPABLE;
143	man->available_caching = TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_WC;
144	man->default_caching = TTM_PL_FLAG_WC;
145	break;
146	default:
147	DRM_ERROR("Unsupported memory type %u\n", (unsigned int)type);
148	return -EINVAL;
149	}
150
151	return 0;
152	}
153	#endif
154
155	static void
156	vbox_bo_evict_flags(struct ttm_buffer_object bo, struct ttm_placement pl)
157	{
158	struct vbox_bo *vboxbo = vbox_bo(bo);
159
160	if (!vbox_ttm_bo_is_vbox_bo(bo))
161	return;
162
163	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_SYSTEM);
164	*pl = vboxbo->placement;
165	}
166
167	static int vbox_bo_verify_access(struct ttm_buffer_object *bo,
168	struct file *filp)
169	{
170	return 0;
171	}
172
173	#if RTLNX_VER_MAX(5,10,0)
174	static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
175	struct ttm_mem_reg *mem)
176	{
177	struct vbox_private *vbox = vbox_bdev(bdev);
178	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
179
180	mem->bus.addr = NULL;
181	mem->bus.offset = 0;
182	mem->bus.size = mem->num_pages << PAGE_SHIFT;
183	mem->bus.base = 0;
184	mem->bus.is_iomem = false;
185	if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
186	return -EINVAL;
187	switch (mem->mem_type) {
188	case TTM_PL_SYSTEM:
189	/* system memory */
190	return 0;
191	case TTM_PL_VRAM:
192	mem->bus.offset = mem->start << PAGE_SHIFT;
193	mem->bus.base = pci_resource_start(vbox->dev->pdev, 0);
194	mem->bus.is_iomem = true;
195	break;
196	default:
197	return -EINVAL;
198	}
199	return 0;
200	}
201	#else
202	static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
203	struct ttm_resource *mem)
204	{
205	struct vbox_private *vbox = vbox_bdev(bdev);
206	mem->bus.addr = NULL;
207	mem->bus.offset = 0;
208	mem->size = mem->num_pages << PAGE_SHIFT;
209	mem->start = 0;
210	mem->bus.is_iomem = false;
211	switch (mem->mem_type) {
212	case TTM_PL_SYSTEM:
213	/* system memory */
214	return 0;
215	case TTM_PL_VRAM:
216	mem->bus.offset = mem->start << PAGE_SHIFT;
217	mem->start = pci_resource_start(vbox->dev->pdev, 0);
218	mem->bus.is_iomem = true;
219	break;
220	default:
221	return -EINVAL;
222	}
223	return 0;
224	}
225	#endif
226
227
228
229	#if RTLNX_VER_MIN(5,10,0)
230	static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
231	struct ttm_resource *mem)
232	{
233	}
234	#else
235	static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
236	struct ttm_mem_reg *mem)
237	{
238	}
239	#endif
240
241	#if RTLNX_VER_MIN(5,10,0)
242	static void vbox_ttm_tt_destroy(struct ttm_bo_device bdev, struct ttm_tt tt)
243	{
244	ttm_tt_fini(tt);
245	kfree(tt);
246	}
247	#else
248	static void vbox_ttm_backend_destroy(struct ttm_tt *tt)
249	{
250	ttm_tt_fini(tt);
251	kfree(tt);
252	}
253
254	static struct ttm_backend_func vbox_tt_backend_func = {
255	.destroy = &vbox_ttm_backend_destroy,
256	};
257	#endif
258
259	#if RTLNX_VER_MAX(4,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
260	static struct ttm_tt vbox_ttm_tt_create(struct ttm_bo_device bdev,
261	unsigned long size,
262	u32 page_flags,
263	struct page *dummy_read_page)
264	#else
265	static struct ttm_tt vbox_ttm_tt_create(struct ttm_buffer_object bo,
266	u32 page_flags)
267	#endif
268	{
269	struct ttm_tt *tt;
270
271	tt = kzalloc(sizeof(*tt), GFP_KERNEL);
272	if (!tt)
273	return NULL;
274
275	#if RTLNX_VER_MAX(5,10,0)
276	tt->func = &vbox_tt_backend_func;
277	#endif
278	#if RTLNX_VER_MAX(4,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
279	if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
280	#else
281	if (ttm_tt_init(tt, bo, page_flags)) {
282	#endif
283	kfree(tt);
284	return NULL;
285	}
286
287	return tt;
288	}
289
290	#if RTLNX_VER_MAX(4,17,0)
291	# if RTLNX_VER_MAX(4,16,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
292	static int vbox_ttm_tt_populate(struct ttm_tt *ttm)
293	{
294	return ttm_pool_populate(ttm);
295	}
296	# else
297	static int vbox_ttm_tt_populate(struct ttm_tt *ttm,
298	struct ttm_operation_ctx *ctx)
299	{
300	return ttm_pool_populate(ttm, ctx);
301	}
302	# endif
303
304	static void vbox_ttm_tt_unpopulate(struct ttm_tt *ttm)
305	{
306	ttm_pool_unpopulate(ttm);
307	}
308	#endif
309
310	static struct ttm_bo_driver vbox_bo_driver = {
311	.ttm_tt_create = vbox_ttm_tt_create,
312	#if RTLNX_VER_MIN(5,10,0)
313	.ttm_tt_destroy = vbox_ttm_tt_destroy,
314	#endif
315	#if RTLNX_VER_MAX(4,17,0)
316	.ttm_tt_populate = vbox_ttm_tt_populate,
317	.ttm_tt_unpopulate = vbox_ttm_tt_unpopulate,
318	#endif
319	#if RTLNX_VER_MAX(5,10,0)
320	.init_mem_type = vbox_bo_init_mem_type,
321	#endif
322	#if RTLNX_VER_MIN(4,10,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)
323	.eviction_valuable = ttm_bo_eviction_valuable,
324	#endif
325	.evict_flags = vbox_bo_evict_flags,
326	.verify_access = vbox_bo_verify_access,
327	.io_mem_reserve = &vbox_ttm_io_mem_reserve,
328	.io_mem_free = &vbox_ttm_io_mem_free,
329	#if RTLNX_VER_MIN(4,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
330	# if RTLNX_VER_MAX(4,16,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
331	.io_mem_pfn = ttm_bo_default_io_mem_pfn,
332	# endif
333	#endif
334	#if (RTLNX_VER_RANGE(4,7,0, 4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)) && !RTLNX_RHEL_MAJ_PREREQ(7,5)
335	.lru_tail = &ttm_bo_default_lru_tail,
336	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
337	#endif
338	};
339
340	int vbox_mm_init(struct vbox_private *vbox)
341	{
342	int ret;
343	struct drm_device *dev = vbox->dev;
344	struct ttm_bo_device *bdev = &vbox->ttm.bdev;
345
346	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
347	ret = vbox_ttm_global_init(vbox);
348	if (ret)
349	return ret;
350	#endif
351	ret = ttm_bo_device_init(&vbox->ttm.bdev,
352	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
353	vbox->ttm.bo_global_ref.ref.object,
354	#endif
355	&vbox_bo_driver,
356	#if RTLNX_VER_MIN(3,15,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,1)
357	dev->anon_inode->i_mapping,
358	#endif
359	#if RTLNX_VER_MIN(5,5,0) \|\| RTLNX_RHEL_MIN(8,3)
360	dev->vma_offset_manager,
361	#elif RTLNX_VER_MAX(5,2,0) && !RTLNX_RHEL_MAJ_PREREQ(8,2)
362	DRM_FILE_PAGE_OFFSET,
363	#endif
364	true);
365	if (ret) {
366	DRM_ERROR("Error initialising bo driver; %d\n", ret);
367	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
368	goto err_ttm_global_release;
369	#else
370	return ret;
371	#endif
372	}
373
374	#if RTLNX_VER_MIN(5,10,0)
375	ret = ttm_range_man_init(bdev, TTM_PL_VRAM, false,
376	vbox->available_vram_size >> PAGE_SHIFT);
377	#else
378	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
379	vbox->available_vram_size >> PAGE_SHIFT);
380	#endif
381	if (ret) {
382	DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
383	goto err_device_release;
384	}
385
386	#ifdef DRM_MTRR_WC
387	vbox->fb_mtrr = drm_mtrr_add(pci_resource_start(dev->pdev, 0),
388	pci_resource_len(dev->pdev, 0),
389	DRM_MTRR_WC);
390	#else
391	vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
392	pci_resource_len(dev->pdev, 0));
393	#endif
394	return 0;
395
396	err_device_release:
397	ttm_bo_device_release(&vbox->ttm.bdev);
398	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
399	err_ttm_global_release:
400	vbox_ttm_global_release(vbox);
401	#endif
402	return ret;
403	}
404
405	void vbox_mm_fini(struct vbox_private *vbox)
406	{
407	#ifdef DRM_MTRR_WC
408	drm_mtrr_del(vbox->fb_mtrr,
409	pci_resource_start(vbox->dev->pdev, 0),
410	pci_resource_len(vbox->dev->pdev, 0), DRM_MTRR_WC);
411	#else
412	arch_phys_wc_del(vbox->fb_mtrr);
413	#endif
414	ttm_bo_device_release(&vbox->ttm.bdev);
415	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
416	vbox_ttm_global_release(vbox);
417	#endif
418	}
419
420	void vbox_ttm_placement(struct vbox_bo *bo, u32 mem_type)
421	{
422	u32 c = 0;
423	#if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
424	bo->placement.fpfn = 0;
425	bo->placement.lpfn = 0;
426	#else
427	unsigned int i;
428	#endif
429
430	bo->placement.placement = bo->placements;
431	bo->placement.busy_placement = bo->placements;
432
433	if (mem_type & VBOX_MEM_TYPE_VRAM) {
434	#if RTLNX_VER_MIN(5,10,0)
435	bo->placements[c].mem_type = TTM_PL_VRAM;
436	PLACEMENT_FLAGS(bo->placements[c++]) =
437	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED;
438	#else
439	PLACEMENT_FLAGS(bo->placements[c++]) =
440	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_VRAM;
441	#endif
442	}
443	if (mem_type & VBOX_MEM_TYPE_SYSTEM) {
444	#if RTLNX_VER_MIN(5,10,0)
445	bo->placements[c].mem_type = TTM_PL_SYSTEM;
446	PLACEMENT_FLAGS(bo->placements[c++]) =
447	TTM_PL_MASK_CACHING;
448	#else
449	PLACEMENT_FLAGS(bo->placements[c++]) =
450	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
451	#endif
452	}
453	if (!c) {
454	#if RTLNX_VER_MIN(5,10,0)
455	bo->placements[c].mem_type = TTM_PL_SYSTEM;
456	PLACEMENT_FLAGS(bo->placements[c++]) =
457	TTM_PL_MASK_CACHING;
458	#else
459	PLACEMENT_FLAGS(bo->placements[c++]) =
460	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
461	#endif
462	}
463
464	bo->placement.num_placement = c;
465	bo->placement.num_busy_placement = c;
466
467	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
468	for (i = 0; i < c; ++i) {
469	bo->placements[i].fpfn = 0;
470	bo->placements[i].lpfn = 0;
471	}
472	#endif
473	}
474
475	int vbox_bo_create(struct drm_device *dev, int size, int align,
476	u32 flags, struct vbox_bo **pvboxbo)
477	{
478	struct vbox_private *vbox = dev->dev_private;
479	struct vbox_bo *vboxbo;
480	size_t acc_size;
481	int ret;
482
483	vboxbo = kzalloc(sizeof(*vboxbo), GFP_KERNEL);
484	if (!vboxbo)
485	return -ENOMEM;
486
487	ret = drm_gem_object_init(dev, &vboxbo->gem, size);
488	if (ret)
489	goto err_free_vboxbo;
490
491	vboxbo->bo.bdev = &vbox->ttm.bdev;
492	#if RTLNX_VER_MAX(3,15,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
493	vboxbo->bo.bdev->dev_mapping = dev->dev_mapping;
494	#endif
495
496	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_VRAM \| VBOX_MEM_TYPE_SYSTEM);
497
498	acc_size = ttm_bo_dma_acc_size(&vbox->ttm.bdev, size,
499	sizeof(struct vbox_bo));
500
501	ret = ttm_bo_init(&vbox->ttm.bdev, &vboxbo->bo, size,
502	ttm_bo_type_device, &vboxbo->placement,
503	#if RTLNX_VER_MAX(4,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
504	align >> PAGE_SHIFT, false, NULL, acc_size,
505	#else
506	align >> PAGE_SHIFT, false, acc_size,
507	#endif
508	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
509	NULL, NULL, vbox_bo_ttm_destroy);
510	#else
511	NULL, vbox_bo_ttm_destroy);
512	#endif
513	if (ret)
514	goto err_free_vboxbo;
515
516	*pvboxbo = vboxbo;
517
518	return 0;
519
520	err_free_vboxbo:
521	kfree(vboxbo);
522	return ret;
523	}
524
525	static inline u64 vbox_bo_gpu_offset(struct vbox_bo *bo)
526	{
527	#if RTLNX_VER_MIN(5,9,0)
528	return bo->bo.mem.start << PAGE_SHIFT;
529	#else
530	return bo->bo.offset;
531	#endif
532	}
533
534	int vbox_bo_pin(struct vbox_bo bo, u32 mem_type, u64 gpu_addr)
535	{
536	#if RTLNX_VER_MIN(4,16,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,6) \|\| RTLNX_SUSE_MAJ_PREREQ(15,1) \|\| RTLNX_SUSE_MAJ_PREREQ(12,5)
537	struct ttm_operation_ctx ctx = { false, false };
538	#endif
539	int i, ret;
540
541	if (bo->pin_count) {
542	bo->pin_count++;
543	if (gpu_addr)
544	*gpu_addr = vbox_bo_gpu_offset(bo);
545
546	return 0;
547	}
548
549	vbox_ttm_placement(bo, mem_type);
550
551	for (i = 0; i < bo->placement.num_placement; i++)
552	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
553
554	#if RTLNX_VER_MAX(4,16,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
555	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
556	#else
557	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
558	#endif
559	if (ret)
560	return ret;
561
562	bo->pin_count = 1;
563
564	if (gpu_addr)
565	*gpu_addr = vbox_bo_gpu_offset(bo);
566
567	return 0;
568	}
569
570	int vbox_bo_unpin(struct vbox_bo *bo)
571	{
572	#if RTLNX_VER_MIN(4,16,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,6) \|\| RTLNX_SUSE_MAJ_PREREQ(15,1) \|\| RTLNX_SUSE_MAJ_PREREQ(12,5)
573	struct ttm_operation_ctx ctx = { false, false };
574	#endif
575	int i, ret;
576
577	if (!bo->pin_count) {
578	DRM_ERROR("unpin bad %p\n", bo);
579	return 0;
580	}
581	bo->pin_count--;
582	if (bo->pin_count)
583	return 0;
584
585	for (i = 0; i < bo->placement.num_placement; i++)
586	PLACEMENT_FLAGS(bo->placements[i]) &= ~TTM_PL_FLAG_NO_EVICT;
587
588	#if RTLNX_VER_MAX(4,16,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
589	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
590	#else
591	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
592	#endif
593	if (ret)
594	return ret;
595
596	return 0;
597	}
598
599	/*
600	* Move a vbox-owned buffer object to system memory if no one else has it
601	* pinned. The caller must have pinned it previously, and this call will
602	* release the caller's pin.
603	*/
604	int vbox_bo_push_sysram(struct vbox_bo *bo)
605	{
606	#if RTLNX_VER_MIN(4,16,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,6) \|\| RTLNX_SUSE_MAJ_PREREQ(15,1) \|\| RTLNX_SUSE_MAJ_PREREQ(12,5)
607	struct ttm_operation_ctx ctx = { false, false };
608	#endif
609	int i, ret;
610
611	if (!bo->pin_count) {
612	DRM_ERROR("unpin bad %p\n", bo);
613	return 0;
614	}
615	bo->pin_count--;
616	if (bo->pin_count)
617	return 0;
618
619	if (bo->kmap.virtual)
620	ttm_bo_kunmap(&bo->kmap);
621
622	vbox_ttm_placement(bo, VBOX_MEM_TYPE_SYSTEM);
623
624	for (i = 0; i < bo->placement.num_placement; i++)
625	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
626
627	#if RTLNX_VER_MAX(4,16,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
628	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
629	#else
630	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
631	#endif
632	if (ret) {
633	DRM_ERROR("pushing to VRAM failed\n");
634	return ret;
635	}
636
637	return 0;
638	}
639
640	int vbox_mmap(struct file filp, struct vm_area_struct vma)
641	{
642	struct drm_file *file_priv;
643	struct vbox_private *vbox;
644
645	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
646	return -EINVAL;
647
648	file_priv = filp->private_data;
649	vbox = file_priv->minor->dev->dev_private;
650
651	return ttm_bo_mmap(filp, vma, &vbox->ttm.bdev);
652	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_ttm.c@ 87092

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