vbox_ttm.c

Last change on this file was 106061, checked in by vboxsync, 3 months ago
Copyright year updates by scm.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 23.8 KB

Line
1	/* $Id: vbox_ttm.c 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2024 Oracle and/or its affiliates.
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
37	#if RTLNX_VER_MIN(6,3,0) \|\| RTLNX_RHEL_RANGE(8,9, 8,99) \|\| RTLNX_RHEL_MAJ_PREREQ(9,3)
38	# include <drm/ttm/ttm_tt.h>
39	#endif
40
41	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(8,5)
42	# include <drm/drm_gem.h>
43	# include <drm/drm_gem_ttm_helper.h>
44	# include <drm/drm_gem_vram_helper.h>
45	#else
46	# include <drm/ttm/ttm_page_alloc.h>
47	#endif
48
49	#if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
50	# include <drm/ttm/ttm_range_manager.h>
51	#endif
52
53	#if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
54	#define PLACEMENT_FLAGS(placement) (placement)
55	#else
56	#define PLACEMENT_FLAGS(placement) ((placement).flags)
57	#endif
58
59
60	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
61	static inline struct vbox_private vbox_bdev(struct ttm_device bd)
62	#else
63	static inline struct vbox_private vbox_bdev(struct ttm_bo_device bd)
64	#endif
65	{
66	return container_of(bd, struct vbox_private, ttm.bdev);
67	}
68
69	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
70	static int vbox_ttm_mem_global_init(struct drm_global_reference *ref)
71	{
72	return ttm_mem_global_init(ref->object);
73	}
74
75	static void vbox_ttm_mem_global_release(struct drm_global_reference *ref)
76	{
77	ttm_mem_global_release(ref->object);
78	}
79
80	/**
81	* Adds the vbox memory manager object/structures to the global memory manager.
82	*/
83	static int vbox_ttm_global_init(struct vbox_private *vbox)
84	{
85	struct drm_global_reference *global_ref;
86	int ret;
87
88	#if RTLNX_VER_MAX(5,0,0)
89	global_ref = &vbox->ttm.mem_global_ref;
90	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
91	global_ref->size = sizeof(struct ttm_mem_global);
92	global_ref->init = &vbox_ttm_mem_global_init;
93	global_ref->release = &vbox_ttm_mem_global_release;
94	ret = drm_global_item_ref(global_ref);
95	if (ret) {
96	DRM_ERROR("Failed setting up TTM memory subsystem.\n");
97	return ret;
98	}
99
100	vbox->ttm.bo_global_ref.mem_glob = vbox->ttm.mem_global_ref.object;
101	#endif
102	global_ref = &vbox->ttm.bo_global_ref.ref;
103	global_ref->global_type = DRM_GLOBAL_TTM_BO;
104	global_ref->size = sizeof(struct ttm_bo_global);
105	global_ref->init = &ttm_bo_global_init;
106	global_ref->release = &ttm_bo_global_release;
107
108	ret = drm_global_item_ref(global_ref);
109	if (ret) {
110	DRM_ERROR("Failed setting up TTM BO subsystem.\n");
111	#if RTLNX_VER_MAX(5,0,0)
112	drm_global_item_unref(&vbox->ttm.mem_global_ref);
113	#endif
114	return ret;
115	}
116
117	return 0;
118	}
119
120	/**
121	* Removes the vbox memory manager object from the global memory manager.
122	*/
123	static void vbox_ttm_global_release(struct vbox_private *vbox)
124	{
125	drm_global_item_unref(&vbox->ttm.bo_global_ref.ref);
126	drm_global_item_unref(&vbox->ttm.mem_global_ref);
127	}
128	#endif
129
130	static void vbox_bo_ttm_destroy(struct ttm_buffer_object *tbo)
131	{
132	struct vbox_bo *bo;
133
134	bo = container_of(tbo, struct vbox_bo, bo);
135
136	drm_gem_object_release(&bo->gem);
137	kfree(bo);
138	}
139
140	static bool vbox_ttm_bo_is_vbox_bo(struct ttm_buffer_object *bo)
141	{
142	if (bo->destroy == &vbox_bo_ttm_destroy)
143	return true;
144
145	return false;
146	}
147
148	#if RTLNX_VER_MAX(5,10,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
149	static int
150	vbox_bo_init_mem_type(struct ttm_bo_device *bdev, u32 type,
151	struct ttm_mem_type_manager *man)
152	{
153	switch (type) {
154	case TTM_PL_SYSTEM:
155	man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
156	man->available_caching = TTM_PL_MASK_CACHING;
157	man->default_caching = TTM_PL_FLAG_CACHED;
158	break;
159	case TTM_PL_VRAM:
160	man->func = &ttm_bo_manager_func;
161	man->flags = TTM_MEMTYPE_FLAG_FIXED \| TTM_MEMTYPE_FLAG_MAPPABLE;
162	man->available_caching = TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_WC;
163	man->default_caching = TTM_PL_FLAG_WC;
164	break;
165	default:
166	DRM_ERROR("Unsupported memory type %u\n", (unsigned int)type);
167	return -EINVAL;
168	}
169
170	return 0;
171	}
172	#endif
173
174	static void
175	vbox_bo_evict_flags(struct ttm_buffer_object bo, struct ttm_placement pl)
176	{
177	struct vbox_bo *vboxbo = vbox_bo(bo);
178
179	if (!vbox_ttm_bo_is_vbox_bo(bo))
180	return;
181
182	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_SYSTEM);
183	*pl = vboxbo->placement;
184	}
185
186	#if RTLNX_VER_MAX(5,14,0) && !RTLNX_RHEL_RANGE(8,6, 8,99)
187	static int vbox_bo_verify_access(struct ttm_buffer_object *bo,
188	struct file *filp)
189	{
190	return 0;
191	}
192	#endif
193
194	#if RTLNX_VER_MAX(5,10,0) && !RTLNX_RHEL_RANGE(8,5, 8,99)
195	static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
196	struct ttm_mem_reg *mem)
197	{
198	struct vbox_private *vbox = vbox_bdev(bdev);
199	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
200
201	mem->bus.addr = NULL;
202	mem->bus.offset = 0;
203	mem->bus.size = mem->num_pages << PAGE_SHIFT;
204	mem->bus.base = 0;
205	mem->bus.is_iomem = false;
206	if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
207	return -EINVAL;
208	switch (mem->mem_type) {
209	case TTM_PL_SYSTEM:
210	/* system memory */
211	return 0;
212	case TTM_PL_VRAM:
213	mem->bus.offset = mem->start << PAGE_SHIFT;
214	mem->bus.base = pci_resource_start(vbox->dev->pdev, 0);
215	mem->bus.is_iomem = true;
216	break;
217	default:
218	return -EINVAL;
219	}
220	return 0;
221	}
222	#else
223	# if RTLNX_VER_MAX(5,13,0) && !RTLNX_RHEL_RANGE(8,6, 8,99)
224	static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
225	struct ttm_resource *mem)
226	# else /* > 5.13.0 */
227	static int vbox_ttm_io_mem_reserve(struct ttm_device *bdev,
228	struct ttm_resource *mem)
229	# endif /* > 5.13.0 */
230	{
231	struct vbox_private *vbox = vbox_bdev(bdev);
232	mem->bus.addr = NULL;
233	mem->bus.offset = 0;
234	# if RTLNX_VER_MAX(5,12,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
235	mem->size = mem->num_pages << PAGE_SHIFT;
236	# endif
237	mem->start = 0;
238	mem->bus.is_iomem = false;
239	switch (mem->mem_type) {
240	case TTM_PL_SYSTEM:
241	/* system memory */
242	return 0;
243	case TTM_PL_VRAM:
244	# if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
245	mem->bus.caching = ttm_write_combined;
246	# endif
247	# if RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
248	mem->bus.offset = (mem->start << PAGE_SHIFT) + pci_resource_start(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0);
249	# else
250	mem->bus.offset = mem->start << PAGE_SHIFT;
251	mem->start = pci_resource_start(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0);
252	# endif
253	mem->bus.is_iomem = true;
254	break;
255	default:
256	return -EINVAL;
257	}
258	return 0;
259	}
260	#endif
261
262
263
264	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
265	static void vbox_ttm_io_mem_free(struct ttm_device *bdev,
266	struct ttm_resource *mem)
267	{
268	}
269	#elif RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
270	static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
271	struct ttm_resource *mem)
272	{
273	}
274	#else
275	static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
276	struct ttm_mem_reg *mem)
277	{
278	}
279	#endif
280
281	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
282	static void vbox_ttm_tt_destroy(struct ttm_device bdev, struct ttm_tt tt)
283	{
284	ttm_tt_fini(tt);
285	kfree(tt);
286	}
287	#elif RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
288	static void vbox_ttm_tt_destroy(struct ttm_bo_device bdev, struct ttm_tt tt)
289	{
290	ttm_tt_fini(tt);
291	kfree(tt);
292	}
293	#else
294	static void vbox_ttm_backend_destroy(struct ttm_tt *tt)
295	{
296	ttm_tt_fini(tt);
297	kfree(tt);
298	}
299
300	static struct ttm_backend_func vbox_tt_backend_func = {
301	.destroy = &vbox_ttm_backend_destroy,
302	};
303	#endif
304
305	#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)
306	static struct ttm_tt vbox_ttm_tt_create(struct ttm_bo_device bdev,
307	unsigned long size,
308	u32 page_flags,
309	struct page *dummy_read_page)
310	#else
311	static struct ttm_tt vbox_ttm_tt_create(struct ttm_buffer_object bo,
312	u32 page_flags)
313	#endif
314	{
315	struct ttm_tt *tt;
316
317	tt = kzalloc(sizeof(*tt), GFP_KERNEL);
318	if (!tt)
319	return NULL;
320
321	#if RTLNX_VER_MAX(5,10,0) && !RTLNX_RHEL_RANGE(8,5, 8,99)
322	tt->func = &vbox_tt_backend_func;
323	#endif
324	#if RTLNX_VER_MIN(5,19,0) \|\| RTLNX_RHEL_RANGE(8,8, 8,99) \|\| RTLNX_RHEL_RANGE(9,2, 9,99) \|\| RTLNX_SUSE_MAJ_PREREQ(15,5)
325	if (ttm_tt_init(tt, bo, page_flags, ttm_write_combined, 0)) {
326	#elif RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
327	if (ttm_tt_init(tt, bo, page_flags, ttm_write_combined)) {
328	#elif RTLNX_VER_MIN(4,17,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,6) \|\| RTLNX_SUSE_MAJ_PREREQ(15,1) \|\| RTLNX_SUSE_MAJ_PREREQ(12,5)
329	if (ttm_tt_init(tt, bo, page_flags)) {
330	#else
331	if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
332	#endif
333
334	kfree(tt);
335	return NULL;
336	}
337
338	return tt;
339	}
340
341	#if RTLNX_VER_MAX(4,17,0)
342	# 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)
343	static int vbox_ttm_tt_populate(struct ttm_tt *ttm)
344	{
345	return ttm_pool_populate(ttm);
346	}
347	# else
348	static int vbox_ttm_tt_populate(struct ttm_tt *ttm,
349	struct ttm_operation_ctx *ctx)
350	{
351	return ttm_pool_populate(ttm, ctx);
352	}
353	# endif
354
355	static void vbox_ttm_tt_unpopulate(struct ttm_tt *ttm)
356	{
357	ttm_pool_unpopulate(ttm);
358	}
359	#endif
360
361	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
362	static int vbox_bo_move(struct ttm_buffer_object *bo, bool evict,
363	struct ttm_operation_ctx ctx, struct ttm_resource new_mem,
364	struct ttm_place *hop)
365	{
366	# if RTLNX_VER_MIN(6,4,0)
367	if (!bo->resource)
368	{
369	if (new_mem->mem_type != TTM_PL_SYSTEM)
370	{
371	hop->mem_type = TTM_PL_SYSTEM;
372	hop->flags = TTM_PL_FLAG_TEMPORARY;
373	return -EMULTIHOP;
374	}
375	ttm_bo_move_null(bo, new_mem);
376	return 0;
377	}
378	# endif
379	return ttm_bo_move_memcpy(bo, ctx, new_mem);
380	}
381	#endif
382
383	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
384	static struct ttm_device_funcs vbox_bo_driver = {
385	#else /* < 5.13.0 */
386	static struct ttm_bo_driver vbox_bo_driver = {
387	#endif /* < 5.13.0 */
388	.ttm_tt_create = vbox_ttm_tt_create,
389	#if RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
390	.ttm_tt_destroy = vbox_ttm_tt_destroy,
391	#endif
392	#if RTLNX_VER_MAX(4,17,0)
393	.ttm_tt_populate = vbox_ttm_tt_populate,
394	.ttm_tt_unpopulate = vbox_ttm_tt_unpopulate,
395	#endif
396	#if RTLNX_VER_MAX(5,10,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
397	.init_mem_type = vbox_bo_init_mem_type,
398	#endif
399	#if RTLNX_VER_MIN(4,10,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)
400	.eviction_valuable = ttm_bo_eviction_valuable,
401	#endif
402	.evict_flags = vbox_bo_evict_flags,
403	#if RTLNX_VER_MAX(5,14,0) && !RTLNX_RHEL_RANGE(8,6, 8,99)
404	.verify_access = vbox_bo_verify_access,
405	#endif
406	.io_mem_reserve = &vbox_ttm_io_mem_reserve,
407	.io_mem_free = &vbox_ttm_io_mem_free,
408	#if RTLNX_VER_MIN(4,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
409	# 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)
410	.io_mem_pfn = ttm_bo_default_io_mem_pfn,
411	# endif
412	#endif
413	#if (RTLNX_VER_RANGE(4,7,0, 4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)) && !RTLNX_RHEL_MAJ_PREREQ(7,5)
414	.lru_tail = &ttm_bo_default_lru_tail,
415	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
416	#endif
417	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
418	.move = &vbox_bo_move,
419	#endif
420	};
421
422	int vbox_mm_init(struct vbox_private *vbox)
423	{
424	int ret;
425	struct drm_device *dev = vbox->dev;
426	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
427	struct ttm_device *bdev = &vbox->ttm.bdev;
428	#else
429	struct ttm_bo_device *bdev = &vbox->ttm.bdev;
430	#endif
431
432	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
433	ret = vbox_ttm_global_init(vbox);
434	if (ret)
435	return ret;
436	#endif
437	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
438	ret = ttm_device_init(&vbox->ttm.bdev,
439	#else
440	ret = ttm_bo_device_init(&vbox->ttm.bdev,
441	#endif
442	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
443	vbox->ttm.bo_global_ref.ref.object,
444	#endif
445	&vbox_bo_driver,
446	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
447	dev->dev,
448	#endif
449	#if RTLNX_VER_MIN(3,15,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,1)
450	dev->anon_inode->i_mapping,
451	#endif
452	#if RTLNX_VER_MIN(5,5,0) \|\| RTLNX_RHEL_MIN(8,3) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
453	dev->vma_offset_manager,
454	#elif RTLNX_VER_MAX(5,2,0) && !RTLNX_RHEL_MAJ_PREREQ(8,2)
455	DRM_FILE_PAGE_OFFSET,
456	#endif
457	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
458	false,
459	#endif
460	true);
461	if (ret) {
462	DRM_ERROR("Error initialising bo driver; %d\n", ret);
463	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
464	goto err_ttm_global_release;
465	#else
466	return ret;
467	#endif
468	}
469
470	#if RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
471	ret = ttm_range_man_init(bdev, TTM_PL_VRAM, false,
472	vbox->available_vram_size >> PAGE_SHIFT);
473	#else
474	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
475	vbox->available_vram_size >> PAGE_SHIFT);
476	#endif
477	if (ret) {
478	DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
479	goto err_device_release;
480	}
481
482	#ifdef DRM_MTRR_WC
483	vbox->fb_mtrr = drm_mtrr_add(pci_resource_start(VBOX_DRM_TO_PCI_DEV(dev), 0),
484	pci_resource_len(VBOX_DRM_TO_PCI_DEV(dev), 0),
485	DRM_MTRR_WC);
486	#else
487	vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(VBOX_DRM_TO_PCI_DEV(dev), 0),
488	pci_resource_len(VBOX_DRM_TO_PCI_DEV(dev), 0));
489	#endif
490	return 0;
491
492	err_device_release:
493	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
494	ttm_device_fini(&vbox->ttm.bdev);
495	#else
496	ttm_bo_device_release(&vbox->ttm.bdev);
497	#endif
498	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
499	err_ttm_global_release:
500	vbox_ttm_global_release(vbox);
501	#endif
502	return ret;
503	}
504
505	void vbox_mm_fini(struct vbox_private *vbox)
506	{
507	#ifdef DRM_MTRR_WC
508	drm_mtrr_del(vbox->fb_mtrr,
509	pci_resource_start(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0),
510	pci_resource_len(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0), DRM_MTRR_WC);
511	#else
512	arch_phys_wc_del(vbox->fb_mtrr);
513	#endif
514	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
515	ttm_device_fini(&vbox->ttm.bdev);
516	#else
517	ttm_bo_device_release(&vbox->ttm.bdev);
518	#endif
519	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
520	vbox_ttm_global_release(vbox);
521	#endif
522	}
523
524	void vbox_ttm_placement(struct vbox_bo *bo, u32 mem_type)
525	{
526	u32 c = 0;
527	#if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
528	bo->placement.fpfn = 0;
529	bo->placement.lpfn = 0;
530	#else
531	unsigned int i;
532	#endif
533
534	bo->placement.placement = bo->placements;
535	#if RTLNX_VER_MAX(6,9,0) && !RTLNX_RHEL_MAJ_PREREQ(9,5)
536	bo->placement.busy_placement = bo->placements;
537	#endif
538
539	if (mem_type & VBOX_MEM_TYPE_VRAM) {
540	#if RTLNX_VER_MIN(6,9,0)
541	bo->placements[c].mem_type = TTM_PL_VRAM;
542	PLACEMENT_FLAGS(bo->placements[c++]) = TTM_PL_FLAG_DESIRED;
543	#elif RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
544	bo->placements[c].mem_type = TTM_PL_VRAM;
545	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
546	#elif RTLNX_VER_MIN(5,10,0)
547	bo->placements[c].mem_type = TTM_PL_VRAM;
548	PLACEMENT_FLAGS(bo->placements[c++]) =
549	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED;
550	#else
551	PLACEMENT_FLAGS(bo->placements[c++]) =
552	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_VRAM;
553	#endif
554	}
555	if (mem_type & VBOX_MEM_TYPE_SYSTEM) {
556
557	#if RTLNX_VER_MIN(6,9,0)
558	bo->placements[c].mem_type = TTM_PL_SYSTEM;
559	PLACEMENT_FLAGS(bo->placements[c++]) = TTM_PL_FLAG_DESIRED;
560	#elif RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
561	bo->placements[c].mem_type = TTM_PL_SYSTEM;
562	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
563	#elif RTLNX_VER_MIN(5,10,0)
564	bo->placements[c].mem_type = TTM_PL_SYSTEM;
565	PLACEMENT_FLAGS(bo->placements[c++]) =
566	TTM_PL_MASK_CACHING;
567	#else
568	PLACEMENT_FLAGS(bo->placements[c++]) =
569	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
570	#endif
571	}
572	if (!c) {
573	#if RTLNX_VER_MIN(6,9,0)
574	bo->placements[c].mem_type = TTM_PL_SYSTEM;
575	PLACEMENT_FLAGS(bo->placements[c++]) = TTM_PL_FLAG_DESIRED;
576	#elif RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
577	bo->placements[c].mem_type = TTM_PL_SYSTEM;
578	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
579	#elif RTLNX_VER_MIN(5,10,0)
580	bo->placements[c].mem_type = TTM_PL_SYSTEM;
581	PLACEMENT_FLAGS(bo->placements[c++]) =
582	TTM_PL_MASK_CACHING;
583	#else
584	PLACEMENT_FLAGS(bo->placements[c++]) =
585	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
586	#endif
587	}
588
589	bo->placement.num_placement = c;
590	#if RTLNX_VER_MAX(6,9,0) && !RTLNX_RHEL_MAJ_PREREQ(9,5)
591	bo->placement.num_busy_placement = c;
592	#endif
593
594	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
595	for (i = 0; i < c; ++i) {
596	bo->placements[i].fpfn = 0;
597	bo->placements[i].lpfn = 0;
598	}
599	#endif
600	}
601
602	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
603	static const struct drm_gem_object_funcs vbox_drm_gem_object_funcs = {
604	.free = vbox_gem_free_object,
605	.print_info = drm_gem_ttm_print_info,
606	# if RTLNX_VER_MIN(6,5,0)
607	.vmap = drm_gem_ttm_vmap,
608	.vunmap = drm_gem_ttm_vunmap,
609	# endif
610	# if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
611	.mmap = drm_gem_ttm_mmap,
612	# endif
613	};
614	#endif
615
616	int vbox_bo_create(struct drm_device *dev, int size, int align,
617	u32 flags, struct vbox_bo **pvboxbo)
618	{
619	struct vbox_private *vbox = dev->dev_private;
620	struct vbox_bo *vboxbo;
621	#if RTLNX_VER_MAX(5,13,0) && !RTLNX_RHEL_RANGE(8,6, 8,99)
622	size_t acc_size;
623	#endif
624	int ret;
625
626	vboxbo = kzalloc(sizeof(*vboxbo), GFP_KERNEL);
627	if (!vboxbo)
628	return -ENOMEM;
629
630	ret = drm_gem_object_init(dev, &vboxbo->gem, size);
631	if (ret)
632	goto err_free_vboxbo;
633
634	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
635	if (!vboxbo->gem.funcs) {
636	vboxbo->gem.funcs = &vbox_drm_gem_object_funcs;
637	}
638	#endif
639	vboxbo->bo.bdev = &vbox->ttm.bdev;
640	#if RTLNX_VER_MAX(3,15,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
641	vboxbo->bo.bdev->dev_mapping = dev->dev_mapping;
642	#endif
643
644	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_VRAM \| VBOX_MEM_TYPE_SYSTEM);
645
646	#if RTLNX_VER_MAX(5,13,0) && !RTLNX_RHEL_RANGE(8,6, 8,99)
647	acc_size = ttm_bo_dma_acc_size(&vbox->ttm.bdev, size,
648	sizeof(struct vbox_bo));
649	#endif
650
651	#if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
652	/* Initialization of the following was removed from DRM stack
653	* in 5.14, so we need to do it manually. */
654	vboxbo->bo.base.funcs = &vbox_drm_gem_object_funcs;
655	kref_init(&vboxbo->bo.base.refcount);
656	vboxbo->bo.base.size = size;
657	vboxbo->bo.base.dev = dev;
658	dma_resv_init(&vboxbo->bo.base._resv);
659	drm_vma_node_reset(&vboxbo->bo.base.vma_node);
660	#endif
661
662	#if RTLNX_VER_MIN(6,1,0) \|\| RTLNX_RHEL_RANGE(8,9, 8,99) \|\| RTLNX_RHEL_RANGE(9,3, 9,99) \|\| RTLNX_SUSE_MAJ_PREREQ(15,5)
663	ret = ttm_bo_init_validate(&vbox->ttm.bdev, &vboxbo->bo,
664	#else
665	ret = ttm_bo_init(&vbox->ttm.bdev, &vboxbo->bo, size,
666	#endif /* < 6.1.0 */
667	ttm_bo_type_device, &vboxbo->placement,
668	#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)
669	align >> PAGE_SHIFT, false, NULL, acc_size,
670	#elif RTLNX_VER_MAX(5,13,0) && !RTLNX_RHEL_RANGE(8,6, 8,99) /* < 5.13.0, < RHEL(8.6, 8.99) */
671	align >> PAGE_SHIFT, false, acc_size,
672	#else /* > 5.13.0 */
673	align >> PAGE_SHIFT, false,
674	#endif /* > 5.13.0 */
675	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
676	NULL, NULL, vbox_bo_ttm_destroy);
677	#else
678	NULL, vbox_bo_ttm_destroy);
679	#endif
680	if (ret)
681	{
682	/* In case of failure, ttm_bo_init() supposed to call
683	* vbox_bo_ttm_destroy() which in turn will free @vboxbo. */
684	goto err_exit;
685	}
686
687	*pvboxbo = vboxbo;
688
689	return 0;
690
691	err_free_vboxbo:
692	kfree(vboxbo);
693	err_exit:
694	return ret;
695	}
696
697	static inline u64 vbox_bo_gpu_offset(struct vbox_bo *bo)
698	{
699	#if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
700	return bo->bo.resource->start << PAGE_SHIFT;
701	#elif RTLNX_VER_MIN(5,9,0) \|\| RTLNX_RHEL_MIN(8,4) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
702	return bo->bo.mem.start << PAGE_SHIFT;
703	#else
704	return bo->bo.offset;
705	#endif
706	}
707
708	int vbox_bo_pin(struct vbox_bo bo, u32 mem_type, u64 gpu_addr)
709	{
710	#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)
711	struct ttm_operation_ctx ctx = { false, false };
712	#endif
713	int ret;
714	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
715	int i;
716	#endif
717
718	if (bo->pin_count) {
719	bo->pin_count++;
720	if (gpu_addr)
721	*gpu_addr = vbox_bo_gpu_offset(bo);
722
723	return 0;
724	}
725
726	vbox_ttm_placement(bo, mem_type);
727
728	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
729	for (i = 0; i < bo->placement.num_placement; i++)
730	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
731	#endif
732
733	#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)
734	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
735	#else
736	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
737	#endif
738	if (ret)
739	return ret;
740
741	bo->pin_count = 1;
742
743	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
744	ttm_bo_pin(&bo->bo);
745	#endif
746
747	if (gpu_addr)
748	*gpu_addr = vbox_bo_gpu_offset(bo);
749
750	return 0;
751	}
752
753	int vbox_bo_unpin(struct vbox_bo *bo)
754	{
755	#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)
756	# if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
757	struct ttm_operation_ctx ctx = { false, false };
758	# endif
759	#endif
760	int ret = 0;
761	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
762	int i;
763	#endif
764
765	if (!bo->pin_count) {
766	DRM_ERROR("unpin bad %p\n", bo);
767	return 0;
768	}
769	bo->pin_count--;
770	if (bo->pin_count)
771	return 0;
772
773	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
774	for (i = 0; i < bo->placement.num_placement; i++)
775	PLACEMENT_FLAGS(bo->placements[i]) &= ~TTM_PL_FLAG_NO_EVICT;
776	#endif
777
778	#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)
779	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
780	#elif RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
781	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
782	#endif
783	if (ret)
784	return ret;
785
786	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
787	ttm_bo_unpin(&bo->bo);
788	#endif
789
790	return 0;
791	}
792
793	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
794	/*
795	* Move a vbox-owned buffer object to system memory if no one else has it
796	* pinned. The caller must have pinned it previously, and this call will
797	* release the caller's pin.
798	*/
799	int vbox_bo_push_sysram(struct vbox_bo *bo)
800	{
801	# 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)
802	struct ttm_operation_ctx ctx = { false, false };
803	# endif
804	int i, ret;
805
806	if (!bo->pin_count) {
807	DRM_ERROR("unpin bad %p\n", bo);
808	return 0;
809	}
810	bo->pin_count--;
811	if (bo->pin_count)
812	return 0;
813
814	if (bo->kmap.virtual)
815	ttm_bo_kunmap(&bo->kmap);
816
817	vbox_ttm_placement(bo, VBOX_MEM_TYPE_SYSTEM);
818
819	for (i = 0; i < bo->placement.num_placement; i++)
820	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
821
822	# 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)
823	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
824	# else
825	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
826	# endif
827	if (ret) {
828	DRM_ERROR("pushing to VRAM failed\n");
829	return ret;
830	}
831
832	return 0;
833	}
834	#endif
835
836	int vbox_mmap(struct file filp, struct vm_area_struct vma)
837	{
838	struct drm_file *file_priv;
839	struct vbox_private *vbox;
840	int ret = -EINVAL;
841
842	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
843	return -EINVAL;
844
845	file_priv = filp->private_data;
846	vbox = file_priv->minor->dev->dev_private;
847
848	#if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
849	(void)vbox;
850	if (drm_dev_is_unplugged(file_priv->minor->dev))
851	return -ENODEV;
852	ret = drm_gem_mmap(filp, vma);
853	#else
854	ret = ttm_bo_mmap(filp, vma, &vbox->ttm.bdev);
855	#endif
856	return ret;
857	}

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

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