vbox_ttm.c@ 88207

最後變更在這個檔案從88207是 88207,由 vboxsync 提交於 4 年前
bugref:9961: Additions/x11: vboxvideo: introduce support for 5.11.x kernels.
屬性 svn:eol-style 設為 `native` 屬性 svn:keywords 設為 `Author Date Id Revision`
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1	/* $Id: vbox_ttm.c 88207 2021-03-19 17:22:21Z 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	mem->size = mem->num_pages << PAGE_SHIFT;
215	mem->start = 0;
216	mem->bus.is_iomem = false;
217	switch (mem->mem_type) {
218	case TTM_PL_SYSTEM:
219	/* system memory */
220	return 0;
221	case TTM_PL_VRAM:
222	# if RTLNX_VER_MIN(5,11,0)
223	mem->bus.caching = ttm_write_combined;
224	mem->bus.offset = (mem->start << PAGE_SHIFT) + pci_resource_start(vbox->dev->pdev, 0);
225	# else
226	mem->bus.offset = mem->start << PAGE_SHIFT;
227	mem->start = pci_resource_start(vbox->dev->pdev, 0);
228	# endif
229	mem->bus.is_iomem = true;
230	break;
231	default:
232	return -EINVAL;
233	}
234	return 0;
235	}
236	#endif
237
238
239
240	#if RTLNX_VER_MIN(5,10,0)
241	static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
242	struct ttm_resource *mem)
243	{
244	}
245	#else
246	static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
247	struct ttm_mem_reg *mem)
248	{
249	}
250	#endif
251
252	#if RTLNX_VER_MIN(5,10,0)
253	static void vbox_ttm_tt_destroy(struct ttm_bo_device bdev, struct ttm_tt tt)
254	{
255	ttm_tt_fini(tt);
256	kfree(tt);
257	}
258	#else
259	static void vbox_ttm_backend_destroy(struct ttm_tt *tt)
260	{
261	ttm_tt_fini(tt);
262	kfree(tt);
263	}
264
265	static struct ttm_backend_func vbox_tt_backend_func = {
266	.destroy = &vbox_ttm_backend_destroy,
267	};
268	#endif
269
270	#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)
271	static struct ttm_tt vbox_ttm_tt_create(struct ttm_bo_device bdev,
272	unsigned long size,
273	u32 page_flags,
274	struct page *dummy_read_page)
275	#else
276	static struct ttm_tt vbox_ttm_tt_create(struct ttm_buffer_object bo,
277	u32 page_flags)
278	#endif
279	{
280	struct ttm_tt *tt;
281
282	tt = kzalloc(sizeof(*tt), GFP_KERNEL);
283	if (!tt)
284	return NULL;
285
286	#if RTLNX_VER_MAX(5,10,0)
287	tt->func = &vbox_tt_backend_func;
288	#endif
289	#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)
290	if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
291	#elif RTLNX_VER_MAX(5,11,0)
292	if (ttm_tt_init(tt, bo, page_flags)) {
293	#else
294	if (ttm_tt_init(tt, bo, page_flags, ttm_write_combined)) {
295	#endif
296	kfree(tt);
297	return NULL;
298	}
299
300	return tt;
301	}
302
303	#if RTLNX_VER_MAX(4,17,0)
304	# 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)
305	static int vbox_ttm_tt_populate(struct ttm_tt *ttm)
306	{
307	return ttm_pool_populate(ttm);
308	}
309	# else
310	static int vbox_ttm_tt_populate(struct ttm_tt *ttm,
311	struct ttm_operation_ctx *ctx)
312	{
313	return ttm_pool_populate(ttm, ctx);
314	}
315	# endif
316
317	static void vbox_ttm_tt_unpopulate(struct ttm_tt *ttm)
318	{
319	ttm_pool_unpopulate(ttm);
320	}
321	#endif
322
323	#if RTLNX_VER_MIN(5,11,0)
324	static int vbox_bo_move(struct ttm_buffer_object *bo, bool evict,
325	struct ttm_operation_ctx ctx, struct ttm_resource new_mem,
326	struct ttm_place *hop)
327	{
328	return ttm_bo_move_memcpy(bo, ctx, new_mem);
329	}
330	#endif
331
332	static struct ttm_bo_driver vbox_bo_driver = {
333	.ttm_tt_create = vbox_ttm_tt_create,
334	#if RTLNX_VER_MIN(5,10,0)
335	.ttm_tt_destroy = vbox_ttm_tt_destroy,
336	#endif
337	#if RTLNX_VER_MAX(4,17,0)
338	.ttm_tt_populate = vbox_ttm_tt_populate,
339	.ttm_tt_unpopulate = vbox_ttm_tt_unpopulate,
340	#endif
341	#if RTLNX_VER_MAX(5,10,0)
342	.init_mem_type = vbox_bo_init_mem_type,
343	#endif
344	#if RTLNX_VER_MIN(4,10,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)
345	.eviction_valuable = ttm_bo_eviction_valuable,
346	#endif
347	.evict_flags = vbox_bo_evict_flags,
348	.verify_access = vbox_bo_verify_access,
349	.io_mem_reserve = &vbox_ttm_io_mem_reserve,
350	.io_mem_free = &vbox_ttm_io_mem_free,
351	#if RTLNX_VER_MIN(4,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
352	# 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)
353	.io_mem_pfn = ttm_bo_default_io_mem_pfn,
354	# endif
355	#endif
356	#if (RTLNX_VER_RANGE(4,7,0, 4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)) && !RTLNX_RHEL_MAJ_PREREQ(7,5)
357	.lru_tail = &ttm_bo_default_lru_tail,
358	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
359	#endif
360	#if RTLNX_VER_MIN(5,11,0)
361	.move = &vbox_bo_move,
362	#endif
363	};
364
365	int vbox_mm_init(struct vbox_private *vbox)
366	{
367	int ret;
368	struct drm_device *dev = vbox->dev;
369	struct ttm_bo_device *bdev = &vbox->ttm.bdev;
370
371	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
372	ret = vbox_ttm_global_init(vbox);
373	if (ret)
374	return ret;
375	#endif
376	ret = ttm_bo_device_init(&vbox->ttm.bdev,
377	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
378	vbox->ttm.bo_global_ref.ref.object,
379	#endif
380	&vbox_bo_driver,
381	#if RTLNX_VER_MIN(5,11,0)
382	dev->dev,
383	#endif
384	#if RTLNX_VER_MIN(3,15,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,1)
385	dev->anon_inode->i_mapping,
386	#endif
387	#if RTLNX_VER_MIN(5,5,0) \|\| RTLNX_RHEL_MIN(8,3)
388	dev->vma_offset_manager,
389	#elif RTLNX_VER_MAX(5,2,0) && !RTLNX_RHEL_MAJ_PREREQ(8,2)
390	DRM_FILE_PAGE_OFFSET,
391	#endif
392	#if RTLNX_VER_MIN(5,11,0)
393	false,
394	#endif
395	true);
396	if (ret) {
397	DRM_ERROR("Error initialising bo driver; %d\n", ret);
398	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
399	goto err_ttm_global_release;
400	#else
401	return ret;
402	#endif
403	}
404
405	#if RTLNX_VER_MIN(5,10,0)
406	ret = ttm_range_man_init(bdev, TTM_PL_VRAM, false,
407	vbox->available_vram_size >> PAGE_SHIFT);
408	#else
409	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
410	vbox->available_vram_size >> PAGE_SHIFT);
411	#endif
412	if (ret) {
413	DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
414	goto err_device_release;
415	}
416
417	#ifdef DRM_MTRR_WC
418	vbox->fb_mtrr = drm_mtrr_add(pci_resource_start(dev->pdev, 0),
419	pci_resource_len(dev->pdev, 0),
420	DRM_MTRR_WC);
421	#else
422	vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
423	pci_resource_len(dev->pdev, 0));
424	#endif
425	return 0;
426
427	err_device_release:
428	ttm_bo_device_release(&vbox->ttm.bdev);
429	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
430	err_ttm_global_release:
431	vbox_ttm_global_release(vbox);
432	#endif
433	return ret;
434	}
435
436	void vbox_mm_fini(struct vbox_private *vbox)
437	{
438	#ifdef DRM_MTRR_WC
439	drm_mtrr_del(vbox->fb_mtrr,
440	pci_resource_start(vbox->dev->pdev, 0),
441	pci_resource_len(vbox->dev->pdev, 0), DRM_MTRR_WC);
442	#else
443	arch_phys_wc_del(vbox->fb_mtrr);
444	#endif
445	ttm_bo_device_release(&vbox->ttm.bdev);
446	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
447	vbox_ttm_global_release(vbox);
448	#endif
449	}
450
451	void vbox_ttm_placement(struct vbox_bo *bo, u32 mem_type)
452	{
453	u32 c = 0;
454	#if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
455	bo->placement.fpfn = 0;
456	bo->placement.lpfn = 0;
457	#else
458	unsigned int i;
459	#endif
460
461	bo->placement.placement = bo->placements;
462	bo->placement.busy_placement = bo->placements;
463
464	if (mem_type & VBOX_MEM_TYPE_VRAM) {
465	#if RTLNX_VER_MIN(5,11,0)
466	bo->placements[c].mem_type = TTM_PL_VRAM;
467	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
468	#elif RTLNX_VER_MIN(5,10,0)
469	bo->placements[c].mem_type = TTM_PL_VRAM;
470	PLACEMENT_FLAGS(bo->placements[c++]) =
471	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED;
472	#else
473	PLACEMENT_FLAGS(bo->placements[c++]) =
474	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_VRAM;
475	#endif
476	}
477	if (mem_type & VBOX_MEM_TYPE_SYSTEM) {
478	#if RTLNX_VER_MIN(5,11,0)
479	bo->placements[c].mem_type = TTM_PL_SYSTEM;
480	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
481	#elif RTLNX_VER_MIN(5,10,0)
482	bo->placements[c].mem_type = TTM_PL_SYSTEM;
483	PLACEMENT_FLAGS(bo->placements[c++]) =
484	TTM_PL_MASK_CACHING;
485	#else
486	PLACEMENT_FLAGS(bo->placements[c++]) =
487	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
488	#endif
489	}
490	if (!c) {
491	#if RTLNX_VER_MIN(5,11,0)
492	bo->placements[c].mem_type = TTM_PL_SYSTEM;
493	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
494	#elif RTLNX_VER_MIN(5,10,0)
495	bo->placements[c].mem_type = TTM_PL_SYSTEM;
496	PLACEMENT_FLAGS(bo->placements[c++]) =
497	TTM_PL_MASK_CACHING;
498	#else
499	PLACEMENT_FLAGS(bo->placements[c++]) =
500	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
501	#endif
502	}
503
504	bo->placement.num_placement = c;
505	bo->placement.num_busy_placement = c;
506
507	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
508	for (i = 0; i < c; ++i) {
509	bo->placements[i].fpfn = 0;
510	bo->placements[i].lpfn = 0;
511	}
512	#endif
513	}
514
515	#if RTLNX_VER_MIN(5,11,0)
516	static const struct drm_gem_object_funcs vbox_drm_gem_object_funcs = {
517	.free = vbox_gem_free_object,
518	.print_info = drm_gem_ttm_print_info,
519	};
520	#endif
521
522	int vbox_bo_create(struct drm_device *dev, int size, int align,
523	u32 flags, struct vbox_bo **pvboxbo)
524	{
525	struct vbox_private *vbox = dev->dev_private;
526	struct vbox_bo *vboxbo;
527	size_t acc_size;
528	int ret;
529
530	vboxbo = kzalloc(sizeof(*vboxbo), GFP_KERNEL);
531	if (!vboxbo)
532	return -ENOMEM;
533
534	ret = drm_gem_object_init(dev, &vboxbo->gem, size);
535	if (ret)
536	goto err_free_vboxbo;
537
538	#if RTLNX_VER_MIN(5,11,0)
539	if (!vboxbo->gem.funcs) {
540	vboxbo->gem.funcs = &vbox_drm_gem_object_funcs;
541	}
542	#endif
543	vboxbo->bo.bdev = &vbox->ttm.bdev;
544	#if RTLNX_VER_MAX(3,15,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
545	vboxbo->bo.bdev->dev_mapping = dev->dev_mapping;
546	#endif
547
548	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_VRAM \| VBOX_MEM_TYPE_SYSTEM);
549
550	acc_size = ttm_bo_dma_acc_size(&vbox->ttm.bdev, size,
551	sizeof(struct vbox_bo));
552
553	ret = ttm_bo_init(&vbox->ttm.bdev, &vboxbo->bo, size,
554	ttm_bo_type_device, &vboxbo->placement,
555	#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)
556	align >> PAGE_SHIFT, false, NULL, acc_size,
557	#else
558	align >> PAGE_SHIFT, false, acc_size,
559	#endif
560	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
561	NULL, NULL, vbox_bo_ttm_destroy);
562	#else
563	NULL, vbox_bo_ttm_destroy);
564	#endif
565	if (ret)
566	goto err_free_vboxbo;
567
568	*pvboxbo = vboxbo;
569
570	return 0;
571
572	err_free_vboxbo:
573	kfree(vboxbo);
574	return ret;
575	}
576
577	static inline u64 vbox_bo_gpu_offset(struct vbox_bo *bo)
578	{
579	#if RTLNX_VER_MIN(5,9,0)
580	return bo->bo.mem.start << PAGE_SHIFT;
581	#else
582	return bo->bo.offset;
583	#endif
584	}
585
586	int vbox_bo_pin(struct vbox_bo bo, u32 mem_type, u64 gpu_addr)
587	{
588	#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)
589	struct ttm_operation_ctx ctx = { false, false };
590	#endif
591	int ret;
592	#if RTLNX_VER_MAX(5,11,0)
593	int i;
594	#endif
595
596	if (bo->pin_count) {
597	bo->pin_count++;
598	if (gpu_addr)
599	*gpu_addr = vbox_bo_gpu_offset(bo);
600
601	return 0;
602	}
603
604	vbox_ttm_placement(bo, mem_type);
605
606	#if RTLNX_VER_MAX(5,11,0)
607	for (i = 0; i < bo->placement.num_placement; i++)
608	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
609	#endif
610
611	#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)
612	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
613	#else
614	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
615	#endif
616	if (ret)
617	return ret;
618
619	bo->pin_count = 1;
620
621	#if RTLNX_VER_MIN(5,11,0)
622	ttm_bo_pin(&bo->bo);
623	#endif
624
625	if (gpu_addr)
626	*gpu_addr = vbox_bo_gpu_offset(bo);
627
628	return 0;
629	}
630
631	int vbox_bo_unpin(struct vbox_bo *bo)
632	{
633	#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)
634	# if RTLNX_VER_MAX(5,11,0)
635	struct ttm_operation_ctx ctx = { false, false };
636	# endif
637	#endif
638	int ret;
639	#if RTLNX_VER_MAX(5,11,0)
640	int i;
641	#endif
642
643	if (!bo->pin_count) {
644	DRM_ERROR("unpin bad %p\n", bo);
645	return 0;
646	}
647	bo->pin_count--;
648	if (bo->pin_count)
649	return 0;
650
651	#if RTLNX_VER_MAX(5,11,0)
652	for (i = 0; i < bo->placement.num_placement; i++)
653	PLACEMENT_FLAGS(bo->placements[i]) &= ~TTM_PL_FLAG_NO_EVICT;
654	#endif
655
656	#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)
657	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
658	#elif RTLNX_VER_MAX(5,11,0)
659	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
660	#endif
661	if (ret)
662	return ret;
663
664	#if RTLNX_VER_MIN(5,11,0)
665	ttm_bo_unpin(&bo->bo);
666	#endif
667
668	return 0;
669	}
670
671	#if RTLNX_VER_MAX(5,11,0)
672	/*
673	* Move a vbox-owned buffer object to system memory if no one else has it
674	* pinned. The caller must have pinned it previously, and this call will
675	* release the caller's pin.
676	*/
677	int vbox_bo_push_sysram(struct vbox_bo *bo)
678	{
679	# 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)
680	struct ttm_operation_ctx ctx = { false, false };
681	# endif
682	int i, ret;
683
684	if (!bo->pin_count) {
685	DRM_ERROR("unpin bad %p\n", bo);
686	return 0;
687	}
688	bo->pin_count--;
689	if (bo->pin_count)
690	return 0;
691
692	if (bo->kmap.virtual)
693	ttm_bo_kunmap(&bo->kmap);
694
695	vbox_ttm_placement(bo, VBOX_MEM_TYPE_SYSTEM);
696
697	for (i = 0; i < bo->placement.num_placement; i++)
698	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
699
700	# 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)
701	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
702	# else
703	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
704	# endif
705	if (ret) {
706	DRM_ERROR("pushing to VRAM failed\n");
707	return ret;
708	}
709
710	return 0;
711	}
712	#endif
713
714	int vbox_mmap(struct file filp, struct vm_area_struct vma)
715	{
716	struct drm_file *file_priv;
717	struct vbox_private *vbox;
718
719	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
720	return -EINVAL;
721
722	file_priv = filp->private_data;
723	vbox = file_priv->minor->dev->dev_private;
724
725	return ttm_bo_mmap(filp, vma, &vbox->ttm.bdev);
726	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_ttm.c@ 88207

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