vbox_ttm.c@ 88274

最後變更在這個檔案從88274是 88274,由 vboxsync 提交於 4 年前
GAs: Linux: make vboxvideo work w/ 5.12-rc4 kernel, bugref:9976.
屬性 svn:eol-style 設為 `native` 屬性 svn:keywords 設為 `Author Date Id Revision`
檔案大小: 18.6 KB

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1	/* $Id: vbox_ttm.c 88274 2021-03-24 12:49:44Z 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	#if RTLNX_VER_MIN(5,11,0)
37	# include <drm/drm_gem.h>
38	# include <drm/drm_gem_ttm_helper.h>
39	# include <drm/drm_gem_vram_helper.h>
40	#else
41	# include <drm/ttm/ttm_page_alloc.h>
42	#endif
43
44	#if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
45	#define PLACEMENT_FLAGS(placement) (placement)
46	#else
47	#define PLACEMENT_FLAGS(placement) ((placement).flags)
48	#endif
49
50
51	static inline struct vbox_private vbox_bdev(struct ttm_bo_device bd)
52	{
53	return container_of(bd, struct vbox_private, ttm.bdev);
54	}
55
56	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
57	static int vbox_ttm_mem_global_init(struct drm_global_reference *ref)
58	{
59	return ttm_mem_global_init(ref->object);
60	}
61
62	static void vbox_ttm_mem_global_release(struct drm_global_reference *ref)
63	{
64	ttm_mem_global_release(ref->object);
65	}
66
67	/**
68	* Adds the vbox memory manager object/structures to the global memory manager.
69	*/
70	static int vbox_ttm_global_init(struct vbox_private *vbox)
71	{
72	struct drm_global_reference *global_ref;
73	int ret;
74
75	#if RTLNX_VER_MAX(5,0,0)
76	global_ref = &vbox->ttm.mem_global_ref;
77	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
78	global_ref->size = sizeof(struct ttm_mem_global);
79	global_ref->init = &vbox_ttm_mem_global_init;
80	global_ref->release = &vbox_ttm_mem_global_release;
81	ret = drm_global_item_ref(global_ref);
82	if (ret) {
83	DRM_ERROR("Failed setting up TTM memory subsystem.\n");
84	return ret;
85	}
86
87	vbox->ttm.bo_global_ref.mem_glob = vbox->ttm.mem_global_ref.object;
88	#endif
89	global_ref = &vbox->ttm.bo_global_ref.ref;
90	global_ref->global_type = DRM_GLOBAL_TTM_BO;
91	global_ref->size = sizeof(struct ttm_bo_global);
92	global_ref->init = &ttm_bo_global_init;
93	global_ref->release = &ttm_bo_global_release;
94
95	ret = drm_global_item_ref(global_ref);
96	if (ret) {
97	DRM_ERROR("Failed setting up TTM BO subsystem.\n");
98	#if RTLNX_VER_MAX(5,0,0)
99	drm_global_item_unref(&vbox->ttm.mem_global_ref);
100	#endif
101	return ret;
102	}
103
104	return 0;
105	}
106
107	/**
108	* Removes the vbox memory manager object from the global memory manager.
109	*/
110	static void vbox_ttm_global_release(struct vbox_private *vbox)
111	{
112	drm_global_item_unref(&vbox->ttm.bo_global_ref.ref);
113	drm_global_item_unref(&vbox->ttm.mem_global_ref);
114	}
115	#endif
116
117	static void vbox_bo_ttm_destroy(struct ttm_buffer_object *tbo)
118	{
119	struct vbox_bo *bo;
120
121	bo = container_of(tbo, struct vbox_bo, bo);
122
123	drm_gem_object_release(&bo->gem);
124	kfree(bo);
125	}
126
127	static bool vbox_ttm_bo_is_vbox_bo(struct ttm_buffer_object *bo)
128	{
129	if (bo->destroy == &vbox_bo_ttm_destroy)
130	return true;
131
132	return false;
133	}
134
135	#if RTLNX_VER_MAX(5,10,0)
136	static int
137	vbox_bo_init_mem_type(struct ttm_bo_device *bdev, u32 type,
138	struct ttm_mem_type_manager *man)
139	{
140	switch (type) {
141	case TTM_PL_SYSTEM:
142	man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
143	man->available_caching = TTM_PL_MASK_CACHING;
144	man->default_caching = TTM_PL_FLAG_CACHED;
145	break;
146	case TTM_PL_VRAM:
147	man->func = &ttm_bo_manager_func;
148	man->flags = TTM_MEMTYPE_FLAG_FIXED \| TTM_MEMTYPE_FLAG_MAPPABLE;
149	man->available_caching = TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_WC;
150	man->default_caching = TTM_PL_FLAG_WC;
151	break;
152	default:
153	DRM_ERROR("Unsupported memory type %u\n", (unsigned int)type);
154	return -EINVAL;
155	}
156
157	return 0;
158	}
159	#endif
160
161	static void
162	vbox_bo_evict_flags(struct ttm_buffer_object bo, struct ttm_placement pl)
163	{
164	struct vbox_bo *vboxbo = vbox_bo(bo);
165
166	if (!vbox_ttm_bo_is_vbox_bo(bo))
167	return;
168
169	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_SYSTEM);
170	*pl = vboxbo->placement;
171	}
172
173	static int vbox_bo_verify_access(struct ttm_buffer_object *bo,
174	struct file *filp)
175	{
176	return 0;
177	}
178
179	#if RTLNX_VER_MAX(5,10,0)
180	static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
181	struct ttm_mem_reg *mem)
182	{
183	struct vbox_private *vbox = vbox_bdev(bdev);
184	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
185
186	mem->bus.addr = NULL;
187	mem->bus.offset = 0;
188	mem->bus.size = mem->num_pages << PAGE_SHIFT;
189	mem->bus.base = 0;
190	mem->bus.is_iomem = false;
191	if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
192	return -EINVAL;
193	switch (mem->mem_type) {
194	case TTM_PL_SYSTEM:
195	/* system memory */
196	return 0;
197	case TTM_PL_VRAM:
198	mem->bus.offset = mem->start << PAGE_SHIFT;
199	mem->bus.base = pci_resource_start(vbox->dev->pdev, 0);
200	mem->bus.is_iomem = true;
201	break;
202	default:
203	return -EINVAL;
204	}
205	return 0;
206	}
207	#else
208	static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
209	struct ttm_resource *mem)
210	{
211	struct vbox_private *vbox = vbox_bdev(bdev);
212	mem->bus.addr = NULL;
213	mem->bus.offset = 0;
214	# if RTLNX_VER_MAX(5,12,0)
215	mem->size = mem->num_pages << PAGE_SHIFT;
216	# endif
217	mem->start = 0;
218	mem->bus.is_iomem = false;
219	switch (mem->mem_type) {
220	case TTM_PL_SYSTEM:
221	/* system memory */
222	return 0;
223	case TTM_PL_VRAM:
224	# if RTLNX_VER_MIN(5,11,0)
225	mem->bus.caching = ttm_write_combined;
226	mem->bus.offset = (mem->start << PAGE_SHIFT) + pci_resource_start(vbox->dev->pdev, 0);
227	# else
228	mem->bus.offset = mem->start << PAGE_SHIFT;
229	mem->start = pci_resource_start(vbox->dev->pdev, 0);
230	# endif
231	mem->bus.is_iomem = true;
232	break;
233	default:
234	return -EINVAL;
235	}
236	return 0;
237	}
238	#endif
239
240
241
242	#if RTLNX_VER_MIN(5,10,0)
243	static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
244	struct ttm_resource *mem)
245	{
246	}
247	#else
248	static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
249	struct ttm_mem_reg *mem)
250	{
251	}
252	#endif
253
254	#if RTLNX_VER_MIN(5,10,0)
255	static void vbox_ttm_tt_destroy(struct ttm_bo_device bdev, struct ttm_tt tt)
256	{
257	ttm_tt_fini(tt);
258	kfree(tt);
259	}
260	#else
261	static void vbox_ttm_backend_destroy(struct ttm_tt *tt)
262	{
263	ttm_tt_fini(tt);
264	kfree(tt);
265	}
266
267	static struct ttm_backend_func vbox_tt_backend_func = {
268	.destroy = &vbox_ttm_backend_destroy,
269	};
270	#endif
271
272	#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)
273	static struct ttm_tt vbox_ttm_tt_create(struct ttm_bo_device bdev,
274	unsigned long size,
275	u32 page_flags,
276	struct page *dummy_read_page)
277	#else
278	static struct ttm_tt vbox_ttm_tt_create(struct ttm_buffer_object bo,
279	u32 page_flags)
280	#endif
281	{
282	struct ttm_tt *tt;
283
284	tt = kzalloc(sizeof(*tt), GFP_KERNEL);
285	if (!tt)
286	return NULL;
287
288	#if RTLNX_VER_MAX(5,10,0)
289	tt->func = &vbox_tt_backend_func;
290	#endif
291	#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)
292	if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
293	#elif RTLNX_VER_MAX(5,11,0)
294	if (ttm_tt_init(tt, bo, page_flags)) {
295	#else
296	if (ttm_tt_init(tt, bo, page_flags, ttm_write_combined)) {
297	#endif
298	kfree(tt);
299	return NULL;
300	}
301
302	return tt;
303	}
304
305	#if RTLNX_VER_MAX(4,17,0)
306	# 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)
307	static int vbox_ttm_tt_populate(struct ttm_tt *ttm)
308	{
309	return ttm_pool_populate(ttm);
310	}
311	# else
312	static int vbox_ttm_tt_populate(struct ttm_tt *ttm,
313	struct ttm_operation_ctx *ctx)
314	{
315	return ttm_pool_populate(ttm, ctx);
316	}
317	# endif
318
319	static void vbox_ttm_tt_unpopulate(struct ttm_tt *ttm)
320	{
321	ttm_pool_unpopulate(ttm);
322	}
323	#endif
324
325	#if RTLNX_VER_MIN(5,11,0)
326	static int vbox_bo_move(struct ttm_buffer_object *bo, bool evict,
327	struct ttm_operation_ctx ctx, struct ttm_resource new_mem,
328	struct ttm_place *hop)
329	{
330	return ttm_bo_move_memcpy(bo, ctx, new_mem);
331	}
332	#endif
333
334	static struct ttm_bo_driver vbox_bo_driver = {
335	.ttm_tt_create = vbox_ttm_tt_create,
336	#if RTLNX_VER_MIN(5,10,0)
337	.ttm_tt_destroy = vbox_ttm_tt_destroy,
338	#endif
339	#if RTLNX_VER_MAX(4,17,0)
340	.ttm_tt_populate = vbox_ttm_tt_populate,
341	.ttm_tt_unpopulate = vbox_ttm_tt_unpopulate,
342	#endif
343	#if RTLNX_VER_MAX(5,10,0)
344	.init_mem_type = vbox_bo_init_mem_type,
345	#endif
346	#if RTLNX_VER_MIN(4,10,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)
347	.eviction_valuable = ttm_bo_eviction_valuable,
348	#endif
349	.evict_flags = vbox_bo_evict_flags,
350	.verify_access = vbox_bo_verify_access,
351	.io_mem_reserve = &vbox_ttm_io_mem_reserve,
352	.io_mem_free = &vbox_ttm_io_mem_free,
353	#if RTLNX_VER_MIN(4,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
354	# 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)
355	.io_mem_pfn = ttm_bo_default_io_mem_pfn,
356	# endif
357	#endif
358	#if (RTLNX_VER_RANGE(4,7,0, 4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)) && !RTLNX_RHEL_MAJ_PREREQ(7,5)
359	.lru_tail = &ttm_bo_default_lru_tail,
360	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
361	#endif
362	#if RTLNX_VER_MIN(5,11,0)
363	.move = &vbox_bo_move,
364	#endif
365	};
366
367	int vbox_mm_init(struct vbox_private *vbox)
368	{
369	int ret;
370	struct drm_device *dev = vbox->dev;
371	struct ttm_bo_device *bdev = &vbox->ttm.bdev;
372
373	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
374	ret = vbox_ttm_global_init(vbox);
375	if (ret)
376	return ret;
377	#endif
378	ret = ttm_bo_device_init(&vbox->ttm.bdev,
379	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
380	vbox->ttm.bo_global_ref.ref.object,
381	#endif
382	&vbox_bo_driver,
383	#if RTLNX_VER_MIN(5,11,0)
384	dev->dev,
385	#endif
386	#if RTLNX_VER_MIN(3,15,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,1)
387	dev->anon_inode->i_mapping,
388	#endif
389	#if RTLNX_VER_MIN(5,5,0) \|\| RTLNX_RHEL_MIN(8,3)
390	dev->vma_offset_manager,
391	#elif RTLNX_VER_MAX(5,2,0) && !RTLNX_RHEL_MAJ_PREREQ(8,2)
392	DRM_FILE_PAGE_OFFSET,
393	#endif
394	#if RTLNX_VER_MIN(5,11,0)
395	false,
396	#endif
397	true);
398	if (ret) {
399	DRM_ERROR("Error initialising bo driver; %d\n", ret);
400	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
401	goto err_ttm_global_release;
402	#else
403	return ret;
404	#endif
405	}
406
407	#if RTLNX_VER_MIN(5,10,0)
408	ret = ttm_range_man_init(bdev, TTM_PL_VRAM, false,
409	vbox->available_vram_size >> PAGE_SHIFT);
410	#else
411	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
412	vbox->available_vram_size >> PAGE_SHIFT);
413	#endif
414	if (ret) {
415	DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
416	goto err_device_release;
417	}
418
419	#ifdef DRM_MTRR_WC
420	vbox->fb_mtrr = drm_mtrr_add(pci_resource_start(dev->pdev, 0),
421	pci_resource_len(dev->pdev, 0),
422	DRM_MTRR_WC);
423	#else
424	vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
425	pci_resource_len(dev->pdev, 0));
426	#endif
427	return 0;
428
429	err_device_release:
430	ttm_bo_device_release(&vbox->ttm.bdev);
431	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
432	err_ttm_global_release:
433	vbox_ttm_global_release(vbox);
434	#endif
435	return ret;
436	}
437
438	void vbox_mm_fini(struct vbox_private *vbox)
439	{
440	#ifdef DRM_MTRR_WC
441	drm_mtrr_del(vbox->fb_mtrr,
442	pci_resource_start(vbox->dev->pdev, 0),
443	pci_resource_len(vbox->dev->pdev, 0), DRM_MTRR_WC);
444	#else
445	arch_phys_wc_del(vbox->fb_mtrr);
446	#endif
447	ttm_bo_device_release(&vbox->ttm.bdev);
448	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
449	vbox_ttm_global_release(vbox);
450	#endif
451	}
452
453	void vbox_ttm_placement(struct vbox_bo *bo, u32 mem_type)
454	{
455	u32 c = 0;
456	#if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
457	bo->placement.fpfn = 0;
458	bo->placement.lpfn = 0;
459	#else
460	unsigned int i;
461	#endif
462
463	bo->placement.placement = bo->placements;
464	bo->placement.busy_placement = bo->placements;
465
466	if (mem_type & VBOX_MEM_TYPE_VRAM) {
467	#if RTLNX_VER_MIN(5,11,0)
468	bo->placements[c].mem_type = TTM_PL_VRAM;
469	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
470	#elif RTLNX_VER_MIN(5,10,0)
471	bo->placements[c].mem_type = TTM_PL_VRAM;
472	PLACEMENT_FLAGS(bo->placements[c++]) =
473	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED;
474	#else
475	PLACEMENT_FLAGS(bo->placements[c++]) =
476	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_VRAM;
477	#endif
478	}
479	if (mem_type & VBOX_MEM_TYPE_SYSTEM) {
480	#if RTLNX_VER_MIN(5,11,0)
481	bo->placements[c].mem_type = TTM_PL_SYSTEM;
482	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
483	#elif RTLNX_VER_MIN(5,10,0)
484	bo->placements[c].mem_type = TTM_PL_SYSTEM;
485	PLACEMENT_FLAGS(bo->placements[c++]) =
486	TTM_PL_MASK_CACHING;
487	#else
488	PLACEMENT_FLAGS(bo->placements[c++]) =
489	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
490	#endif
491	}
492	if (!c) {
493	#if RTLNX_VER_MIN(5,11,0)
494	bo->placements[c].mem_type = TTM_PL_SYSTEM;
495	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
496	#elif RTLNX_VER_MIN(5,10,0)
497	bo->placements[c].mem_type = TTM_PL_SYSTEM;
498	PLACEMENT_FLAGS(bo->placements[c++]) =
499	TTM_PL_MASK_CACHING;
500	#else
501	PLACEMENT_FLAGS(bo->placements[c++]) =
502	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
503	#endif
504	}
505
506	bo->placement.num_placement = c;
507	bo->placement.num_busy_placement = c;
508
509	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
510	for (i = 0; i < c; ++i) {
511	bo->placements[i].fpfn = 0;
512	bo->placements[i].lpfn = 0;
513	}
514	#endif
515	}
516
517	#if RTLNX_VER_MIN(5,11,0)
518	static const struct drm_gem_object_funcs vbox_drm_gem_object_funcs = {
519	.free = vbox_gem_free_object,
520	.print_info = drm_gem_ttm_print_info,
521	};
522	#endif
523
524	int vbox_bo_create(struct drm_device *dev, int size, int align,
525	u32 flags, struct vbox_bo **pvboxbo)
526	{
527	struct vbox_private *vbox = dev->dev_private;
528	struct vbox_bo *vboxbo;
529	size_t acc_size;
530	int ret;
531
532	vboxbo = kzalloc(sizeof(*vboxbo), GFP_KERNEL);
533	if (!vboxbo)
534	return -ENOMEM;
535
536	ret = drm_gem_object_init(dev, &vboxbo->gem, size);
537	if (ret)
538	goto err_free_vboxbo;
539
540	#if RTLNX_VER_MIN(5,11,0)
541	if (!vboxbo->gem.funcs) {
542	vboxbo->gem.funcs = &vbox_drm_gem_object_funcs;
543	}
544	#endif
545	vboxbo->bo.bdev = &vbox->ttm.bdev;
546	#if RTLNX_VER_MAX(3,15,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
547	vboxbo->bo.bdev->dev_mapping = dev->dev_mapping;
548	#endif
549
550	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_VRAM \| VBOX_MEM_TYPE_SYSTEM);
551
552	acc_size = ttm_bo_dma_acc_size(&vbox->ttm.bdev, size,
553	sizeof(struct vbox_bo));
554
555	ret = ttm_bo_init(&vbox->ttm.bdev, &vboxbo->bo, size,
556	ttm_bo_type_device, &vboxbo->placement,
557	#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)
558	align >> PAGE_SHIFT, false, NULL, acc_size,
559	#else
560	align >> PAGE_SHIFT, false, acc_size,
561	#endif
562	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
563	NULL, NULL, vbox_bo_ttm_destroy);
564	#else
565	NULL, vbox_bo_ttm_destroy);
566	#endif
567	if (ret)
568	goto err_free_vboxbo;
569
570	*pvboxbo = vboxbo;
571
572	return 0;
573
574	err_free_vboxbo:
575	kfree(vboxbo);
576	return ret;
577	}
578
579	static inline u64 vbox_bo_gpu_offset(struct vbox_bo *bo)
580	{
581	#if RTLNX_VER_MIN(5,9,0)
582	return bo->bo.mem.start << PAGE_SHIFT;
583	#else
584	return bo->bo.offset;
585	#endif
586	}
587
588	int vbox_bo_pin(struct vbox_bo bo, u32 mem_type, u64 gpu_addr)
589	{
590	#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)
591	struct ttm_operation_ctx ctx = { false, false };
592	#endif
593	int ret;
594	#if RTLNX_VER_MAX(5,11,0)
595	int i;
596	#endif
597
598	if (bo->pin_count) {
599	bo->pin_count++;
600	if (gpu_addr)
601	*gpu_addr = vbox_bo_gpu_offset(bo);
602
603	return 0;
604	}
605
606	vbox_ttm_placement(bo, mem_type);
607
608	#if RTLNX_VER_MAX(5,11,0)
609	for (i = 0; i < bo->placement.num_placement; i++)
610	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
611	#endif
612
613	#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)
614	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
615	#else
616	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
617	#endif
618	if (ret)
619	return ret;
620
621	bo->pin_count = 1;
622
623	#if RTLNX_VER_MIN(5,11,0)
624	ttm_bo_pin(&bo->bo);
625	#endif
626
627	if (gpu_addr)
628	*gpu_addr = vbox_bo_gpu_offset(bo);
629
630	return 0;
631	}
632
633	int vbox_bo_unpin(struct vbox_bo *bo)
634	{
635	#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)
636	# if RTLNX_VER_MAX(5,11,0)
637	struct ttm_operation_ctx ctx = { false, false };
638	# endif
639	#endif
640	int ret;
641	#if RTLNX_VER_MAX(5,11,0)
642	int i;
643	#endif
644
645	if (!bo->pin_count) {
646	DRM_ERROR("unpin bad %p\n", bo);
647	return 0;
648	}
649	bo->pin_count--;
650	if (bo->pin_count)
651	return 0;
652
653	#if RTLNX_VER_MAX(5,11,0)
654	for (i = 0; i < bo->placement.num_placement; i++)
655	PLACEMENT_FLAGS(bo->placements[i]) &= ~TTM_PL_FLAG_NO_EVICT;
656	#endif
657
658	#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)
659	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
660	#elif RTLNX_VER_MAX(5,11,0)
661	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
662	#endif
663	if (ret)
664	return ret;
665
666	#if RTLNX_VER_MIN(5,11,0)
667	ttm_bo_unpin(&bo->bo);
668	#endif
669
670	return 0;
671	}
672
673	#if RTLNX_VER_MAX(5,11,0)
674	/*
675	* Move a vbox-owned buffer object to system memory if no one else has it
676	* pinned. The caller must have pinned it previously, and this call will
677	* release the caller's pin.
678	*/
679	int vbox_bo_push_sysram(struct vbox_bo *bo)
680	{
681	# 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)
682	struct ttm_operation_ctx ctx = { false, false };
683	# endif
684	int i, ret;
685
686	if (!bo->pin_count) {
687	DRM_ERROR("unpin bad %p\n", bo);
688	return 0;
689	}
690	bo->pin_count--;
691	if (bo->pin_count)
692	return 0;
693
694	if (bo->kmap.virtual)
695	ttm_bo_kunmap(&bo->kmap);
696
697	vbox_ttm_placement(bo, VBOX_MEM_TYPE_SYSTEM);
698
699	for (i = 0; i < bo->placement.num_placement; i++)
700	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
701
702	# 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)
703	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
704	# else
705	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
706	# endif
707	if (ret) {
708	DRM_ERROR("pushing to VRAM failed\n");
709	return ret;
710	}
711
712	return 0;
713	}
714	#endif
715
716	int vbox_mmap(struct file filp, struct vm_area_struct vma)
717	{
718	struct drm_file *file_priv;
719	struct vbox_private *vbox;
720
721	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
722	return -EINVAL;
723
724	file_priv = filp->private_data;
725	vbox = file_priv->minor->dev->dev_private;
726
727	return ttm_bo_mmap(filp, vma, &vbox->ttm.bdev);
728	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_ttm.c@ 88274

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