vbox_ttm.c@ 93228

Last change on this file since 93228 was 93115, checked in by vboxsync, 3 years ago
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1	/* $Id: vbox_ttm.c 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 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 <airlied@redhat.com>
33	* Michael Thayer <michael.thayer@oracle.com>
34	*/
35	#include "vbox_drv.h"
36	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(8,5)
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_MIN(5,14,0)
45	# include <drm/ttm/ttm_range_manager.h>
46	#endif
47
48	#if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
49	#define PLACEMENT_FLAGS(placement) (placement)
50	#else
51	#define PLACEMENT_FLAGS(placement) ((placement).flags)
52	#endif
53
54
55	#if RTLNX_VER_MIN(5,13,0)
56	static inline struct vbox_private vbox_bdev(struct ttm_device bd)
57	#else
58	static inline struct vbox_private vbox_bdev(struct ttm_bo_device bd)
59	#endif
60	{
61	return container_of(bd, struct vbox_private, ttm.bdev);
62	}
63
64	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
65	static int vbox_ttm_mem_global_init(struct drm_global_reference *ref)
66	{
67	return ttm_mem_global_init(ref->object);
68	}
69
70	static void vbox_ttm_mem_global_release(struct drm_global_reference *ref)
71	{
72	ttm_mem_global_release(ref->object);
73	}
74
75	/**
76	* Adds the vbox memory manager object/structures to the global memory manager.
77	*/
78	static int vbox_ttm_global_init(struct vbox_private *vbox)
79	{
80	struct drm_global_reference *global_ref;
81	int ret;
82
83	#if RTLNX_VER_MAX(5,0,0)
84	global_ref = &vbox->ttm.mem_global_ref;
85	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
86	global_ref->size = sizeof(struct ttm_mem_global);
87	global_ref->init = &vbox_ttm_mem_global_init;
88	global_ref->release = &vbox_ttm_mem_global_release;
89	ret = drm_global_item_ref(global_ref);
90	if (ret) {
91	DRM_ERROR("Failed setting up TTM memory subsystem.\n");
92	return ret;
93	}
94
95	vbox->ttm.bo_global_ref.mem_glob = vbox->ttm.mem_global_ref.object;
96	#endif
97	global_ref = &vbox->ttm.bo_global_ref.ref;
98	global_ref->global_type = DRM_GLOBAL_TTM_BO;
99	global_ref->size = sizeof(struct ttm_bo_global);
100	global_ref->init = &ttm_bo_global_init;
101	global_ref->release = &ttm_bo_global_release;
102
103	ret = drm_global_item_ref(global_ref);
104	if (ret) {
105	DRM_ERROR("Failed setting up TTM BO subsystem.\n");
106	#if RTLNX_VER_MAX(5,0,0)
107	drm_global_item_unref(&vbox->ttm.mem_global_ref);
108	#endif
109	return ret;
110	}
111
112	return 0;
113	}
114
115	/**
116	* Removes the vbox memory manager object from the global memory manager.
117	*/
118	static void vbox_ttm_global_release(struct vbox_private *vbox)
119	{
120	drm_global_item_unref(&vbox->ttm.bo_global_ref.ref);
121	drm_global_item_unref(&vbox->ttm.mem_global_ref);
122	}
123	#endif
124
125	static void vbox_bo_ttm_destroy(struct ttm_buffer_object *tbo)
126	{
127	struct vbox_bo *bo;
128
129	bo = container_of(tbo, struct vbox_bo, bo);
130
131	drm_gem_object_release(&bo->gem);
132	kfree(bo);
133	}
134
135	static bool vbox_ttm_bo_is_vbox_bo(struct ttm_buffer_object *bo)
136	{
137	if (bo->destroy == &vbox_bo_ttm_destroy)
138	return true;
139
140	return false;
141	}
142
143	#if RTLNX_VER_MAX(5,10,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
144	static int
145	vbox_bo_init_mem_type(struct ttm_bo_device *bdev, u32 type,
146	struct ttm_mem_type_manager *man)
147	{
148	switch (type) {
149	case TTM_PL_SYSTEM:
150	man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
151	man->available_caching = TTM_PL_MASK_CACHING;
152	man->default_caching = TTM_PL_FLAG_CACHED;
153	break;
154	case TTM_PL_VRAM:
155	man->func = &ttm_bo_manager_func;
156	man->flags = TTM_MEMTYPE_FLAG_FIXED \| TTM_MEMTYPE_FLAG_MAPPABLE;
157	man->available_caching = TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_WC;
158	man->default_caching = TTM_PL_FLAG_WC;
159	break;
160	default:
161	DRM_ERROR("Unsupported memory type %u\n", (unsigned int)type);
162	return -EINVAL;
163	}
164
165	return 0;
166	}
167	#endif
168
169	static void
170	vbox_bo_evict_flags(struct ttm_buffer_object bo, struct ttm_placement pl)
171	{
172	struct vbox_bo *vboxbo = vbox_bo(bo);
173
174	if (!vbox_ttm_bo_is_vbox_bo(bo))
175	return;
176
177	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_SYSTEM);
178	*pl = vboxbo->placement;
179	}
180
181	#if RTLNX_VER_MAX(5,14,0)
182	static int vbox_bo_verify_access(struct ttm_buffer_object *bo,
183	struct file *filp)
184	{
185	return 0;
186	}
187	#endif
188
189	#if RTLNX_VER_MAX(5,10,0) && !RTLNX_RHEL_RANGE(8,5, 8,99)
190	static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
191	struct ttm_mem_reg *mem)
192	{
193	struct vbox_private *vbox = vbox_bdev(bdev);
194	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
195
196	mem->bus.addr = NULL;
197	mem->bus.offset = 0;
198	mem->bus.size = mem->num_pages << PAGE_SHIFT;
199	mem->bus.base = 0;
200	mem->bus.is_iomem = false;
201	if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
202	return -EINVAL;
203	switch (mem->mem_type) {
204	case TTM_PL_SYSTEM:
205	/* system memory */
206	return 0;
207	case TTM_PL_VRAM:
208	mem->bus.offset = mem->start << PAGE_SHIFT;
209	mem->bus.base = pci_resource_start(vbox->dev->pdev, 0);
210	mem->bus.is_iomem = true;
211	break;
212	default:
213	return -EINVAL;
214	}
215	return 0;
216	}
217	#else
218	# if RTLNX_VER_MAX(5,13,0)
219	static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
220	struct ttm_resource *mem)
221	# else /* > 5.13.0 */
222	static int vbox_ttm_io_mem_reserve(struct ttm_device *bdev,
223	struct ttm_resource *mem)
224	# endif /* > 5.13.0 */
225	{
226	struct vbox_private *vbox = vbox_bdev(bdev);
227	mem->bus.addr = NULL;
228	mem->bus.offset = 0;
229	# if RTLNX_VER_MAX(5,12,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
230	mem->size = mem->num_pages << PAGE_SHIFT;
231	# endif
232	mem->start = 0;
233	mem->bus.is_iomem = false;
234	switch (mem->mem_type) {
235	case TTM_PL_SYSTEM:
236	/* system memory */
237	return 0;
238	case TTM_PL_VRAM:
239	# if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
240	mem->bus.caching = ttm_write_combined;
241	# endif
242	# if RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
243	mem->bus.offset = (mem->start << PAGE_SHIFT) + pci_resource_start(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0);
244	# else
245	mem->bus.offset = mem->start << PAGE_SHIFT;
246	mem->start = pci_resource_start(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0);
247	# endif
248	mem->bus.is_iomem = true;
249	break;
250	default:
251	return -EINVAL;
252	}
253	return 0;
254	}
255	#endif
256
257
258
259	#if RTLNX_VER_MIN(5,13,0)
260	static void vbox_ttm_io_mem_free(struct ttm_device *bdev,
261	struct ttm_resource *mem)
262	{
263	}
264	#elif RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
265	static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
266	struct ttm_resource *mem)
267	{
268	}
269	#else
270	static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
271	struct ttm_mem_reg *mem)
272	{
273	}
274	#endif
275
276	#if RTLNX_VER_MIN(5,13,0)
277	static void vbox_ttm_tt_destroy(struct ttm_device bdev, struct ttm_tt tt)
278	{
279	ttm_tt_fini(tt);
280	kfree(tt);
281	}
282	#elif RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
283	static void vbox_ttm_tt_destroy(struct ttm_bo_device bdev, struct ttm_tt tt)
284	{
285	ttm_tt_fini(tt);
286	kfree(tt);
287	}
288	#else
289	static void vbox_ttm_backend_destroy(struct ttm_tt *tt)
290	{
291	ttm_tt_fini(tt);
292	kfree(tt);
293	}
294
295	static struct ttm_backend_func vbox_tt_backend_func = {
296	.destroy = &vbox_ttm_backend_destroy,
297	};
298	#endif
299
300	#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)
301	static struct ttm_tt vbox_ttm_tt_create(struct ttm_bo_device bdev,
302	unsigned long size,
303	u32 page_flags,
304	struct page *dummy_read_page)
305	#else
306	static struct ttm_tt vbox_ttm_tt_create(struct ttm_buffer_object bo,
307	u32 page_flags)
308	#endif
309	{
310	struct ttm_tt *tt;
311
312	tt = kzalloc(sizeof(*tt), GFP_KERNEL);
313	if (!tt)
314	return NULL;
315
316	#if RTLNX_VER_MAX(5,10,0) && !RTLNX_RHEL_RANGE(8,5, 8,99)
317	tt->func = &vbox_tt_backend_func;
318	#endif
319	#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)
320	if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
321	#elif RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_RANGE(8,5, 8,99)
322	if (ttm_tt_init(tt, bo, page_flags)) {
323	#else
324	if (ttm_tt_init(tt, bo, page_flags, ttm_write_combined)) {
325	#endif
326	kfree(tt);
327	return NULL;
328	}
329
330	return tt;
331	}
332
333	#if RTLNX_VER_MAX(4,17,0)
334	# 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)
335	static int vbox_ttm_tt_populate(struct ttm_tt *ttm)
336	{
337	return ttm_pool_populate(ttm);
338	}
339	# else
340	static int vbox_ttm_tt_populate(struct ttm_tt *ttm,
341	struct ttm_operation_ctx *ctx)
342	{
343	return ttm_pool_populate(ttm, ctx);
344	}
345	# endif
346
347	static void vbox_ttm_tt_unpopulate(struct ttm_tt *ttm)
348	{
349	ttm_pool_unpopulate(ttm);
350	}
351	#endif
352
353	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
354	static int vbox_bo_move(struct ttm_buffer_object *bo, bool evict,
355	struct ttm_operation_ctx ctx, struct ttm_resource new_mem,
356	struct ttm_place *hop)
357	{
358	return ttm_bo_move_memcpy(bo, ctx, new_mem);
359	}
360	#endif
361
362	#if RTLNX_VER_MIN(5,13,0)
363	static struct ttm_device_funcs vbox_bo_driver = {
364	#else /* < 5.13.0 */
365	static struct ttm_bo_driver vbox_bo_driver = {
366	#endif /* < 5.13.0 */
367	.ttm_tt_create = vbox_ttm_tt_create,
368	#if RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
369	.ttm_tt_destroy = vbox_ttm_tt_destroy,
370	#endif
371	#if RTLNX_VER_MAX(4,17,0)
372	.ttm_tt_populate = vbox_ttm_tt_populate,
373	.ttm_tt_unpopulate = vbox_ttm_tt_unpopulate,
374	#endif
375	#if RTLNX_VER_MAX(5,10,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
376	.init_mem_type = vbox_bo_init_mem_type,
377	#endif
378	#if RTLNX_VER_MIN(4,10,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)
379	.eviction_valuable = ttm_bo_eviction_valuable,
380	#endif
381	.evict_flags = vbox_bo_evict_flags,
382	#if RTLNX_VER_MAX(5,14,0)
383	.verify_access = vbox_bo_verify_access,
384	#endif
385	.io_mem_reserve = &vbox_ttm_io_mem_reserve,
386	.io_mem_free = &vbox_ttm_io_mem_free,
387	#if RTLNX_VER_MIN(4,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
388	# 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)
389	.io_mem_pfn = ttm_bo_default_io_mem_pfn,
390	# endif
391	#endif
392	#if (RTLNX_VER_RANGE(4,7,0, 4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)) && !RTLNX_RHEL_MAJ_PREREQ(7,5)
393	.lru_tail = &ttm_bo_default_lru_tail,
394	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
395	#endif
396	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
397	.move = &vbox_bo_move,
398	#endif
399	};
400
401	int vbox_mm_init(struct vbox_private *vbox)
402	{
403	int ret;
404	struct drm_device *dev = vbox->dev;
405	#if RTLNX_VER_MIN(5,13,0)
406	struct ttm_device *bdev = &vbox->ttm.bdev;
407	#else
408	struct ttm_bo_device *bdev = &vbox->ttm.bdev;
409	#endif
410
411	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
412	ret = vbox_ttm_global_init(vbox);
413	if (ret)
414	return ret;
415	#endif
416	#if RTLNX_VER_MIN(5,13,0)
417	ret = ttm_device_init(&vbox->ttm.bdev,
418	#else
419	ret = ttm_bo_device_init(&vbox->ttm.bdev,
420	#endif
421	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
422	vbox->ttm.bo_global_ref.ref.object,
423	#endif
424	&vbox_bo_driver,
425	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
426	dev->dev,
427	#endif
428	#if RTLNX_VER_MIN(3,15,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,1)
429	dev->anon_inode->i_mapping,
430	#endif
431	#if RTLNX_VER_MIN(5,5,0) \|\| RTLNX_RHEL_MIN(8,3) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
432	dev->vma_offset_manager,
433	#elif RTLNX_VER_MAX(5,2,0) && !RTLNX_RHEL_MAJ_PREREQ(8,2)
434	DRM_FILE_PAGE_OFFSET,
435	#endif
436	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
437	false,
438	#endif
439	true);
440	if (ret) {
441	DRM_ERROR("Error initialising bo driver; %d\n", ret);
442	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
443	goto err_ttm_global_release;
444	#else
445	return ret;
446	#endif
447	}
448
449	#if RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
450	ret = ttm_range_man_init(bdev, TTM_PL_VRAM, false,
451	vbox->available_vram_size >> PAGE_SHIFT);
452	#else
453	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
454	vbox->available_vram_size >> PAGE_SHIFT);
455	#endif
456	if (ret) {
457	DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
458	goto err_device_release;
459	}
460
461	#ifdef DRM_MTRR_WC
462	vbox->fb_mtrr = drm_mtrr_add(pci_resource_start(VBOX_DRM_TO_PCI_DEV(dev), 0),
463	pci_resource_len(VBOX_DRM_TO_PCI_DEV(dev), 0),
464	DRM_MTRR_WC);
465	#else
466	vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(VBOX_DRM_TO_PCI_DEV(dev), 0),
467	pci_resource_len(VBOX_DRM_TO_PCI_DEV(dev), 0));
468	#endif
469	return 0;
470
471	err_device_release:
472	#if RTLNX_VER_MIN(5,13,0)
473	ttm_device_fini(&vbox->ttm.bdev);
474	#else
475	ttm_bo_device_release(&vbox->ttm.bdev);
476	#endif
477	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
478	err_ttm_global_release:
479	vbox_ttm_global_release(vbox);
480	#endif
481	return ret;
482	}
483
484	void vbox_mm_fini(struct vbox_private *vbox)
485	{
486	#ifdef DRM_MTRR_WC
487	drm_mtrr_del(vbox->fb_mtrr,
488	pci_resource_start(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0),
489	pci_resource_len(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0), DRM_MTRR_WC);
490	#else
491	arch_phys_wc_del(vbox->fb_mtrr);
492	#endif
493	#if RTLNX_VER_MIN(5,13,0)
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	vbox_ttm_global_release(vbox);
500	#endif
501	}
502
503	void vbox_ttm_placement(struct vbox_bo *bo, u32 mem_type)
504	{
505	u32 c = 0;
506	#if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
507	bo->placement.fpfn = 0;
508	bo->placement.lpfn = 0;
509	#else
510	unsigned int i;
511	#endif
512
513	bo->placement.placement = bo->placements;
514	bo->placement.busy_placement = bo->placements;
515
516	if (mem_type & VBOX_MEM_TYPE_VRAM) {
517	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
518	bo->placements[c].mem_type = TTM_PL_VRAM;
519	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
520	#elif RTLNX_VER_MIN(5,10,0)
521	bo->placements[c].mem_type = TTM_PL_VRAM;
522	PLACEMENT_FLAGS(bo->placements[c++]) =
523	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED;
524	#else
525	PLACEMENT_FLAGS(bo->placements[c++]) =
526	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_VRAM;
527	#endif
528	}
529	if (mem_type & VBOX_MEM_TYPE_SYSTEM) {
530	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
531	bo->placements[c].mem_type = TTM_PL_SYSTEM;
532	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
533	#elif RTLNX_VER_MIN(5,10,0)
534	bo->placements[c].mem_type = TTM_PL_SYSTEM;
535	PLACEMENT_FLAGS(bo->placements[c++]) =
536	TTM_PL_MASK_CACHING;
537	#else
538	PLACEMENT_FLAGS(bo->placements[c++]) =
539	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
540	#endif
541	}
542	if (!c) {
543	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
544	bo->placements[c].mem_type = TTM_PL_SYSTEM;
545	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
546	#elif RTLNX_VER_MIN(5,10,0)
547	bo->placements[c].mem_type = TTM_PL_SYSTEM;
548	PLACEMENT_FLAGS(bo->placements[c++]) =
549	TTM_PL_MASK_CACHING;
550	#else
551	PLACEMENT_FLAGS(bo->placements[c++]) =
552	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
553	#endif
554	}
555
556	bo->placement.num_placement = c;
557	bo->placement.num_busy_placement = c;
558
559	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
560	for (i = 0; i < c; ++i) {
561	bo->placements[i].fpfn = 0;
562	bo->placements[i].lpfn = 0;
563	}
564	#endif
565	}
566
567	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
568	static const struct drm_gem_object_funcs vbox_drm_gem_object_funcs = {
569	.free = vbox_gem_free_object,
570	.print_info = drm_gem_ttm_print_info,
571	# if RTLNX_VER_MIN(5,14,0)
572	.mmap = drm_gem_ttm_mmap,
573	# endif
574	};
575	#endif
576
577	int vbox_bo_create(struct drm_device *dev, int size, int align,
578	u32 flags, struct vbox_bo **pvboxbo)
579	{
580	struct vbox_private *vbox = dev->dev_private;
581	struct vbox_bo *vboxbo;
582	#if RTLNX_VER_MAX(5,13,0)
583	size_t acc_size;
584	#endif
585	int ret;
586
587	vboxbo = kzalloc(sizeof(*vboxbo), GFP_KERNEL);
588	if (!vboxbo)
589	return -ENOMEM;
590
591	ret = drm_gem_object_init(dev, &vboxbo->gem, size);
592	if (ret)
593	goto err_free_vboxbo;
594
595	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
596	if (!vboxbo->gem.funcs) {
597	vboxbo->gem.funcs = &vbox_drm_gem_object_funcs;
598	}
599	#endif
600	vboxbo->bo.bdev = &vbox->ttm.bdev;
601	#if RTLNX_VER_MAX(3,15,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
602	vboxbo->bo.bdev->dev_mapping = dev->dev_mapping;
603	#endif
604
605	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_VRAM \| VBOX_MEM_TYPE_SYSTEM);
606
607	#if RTLNX_VER_MAX(5,13,0)
608	acc_size = ttm_bo_dma_acc_size(&vbox->ttm.bdev, size,
609	sizeof(struct vbox_bo));
610	#endif
611
612	#if RTLNX_VER_MIN(5,14,0)
613	/* Initialization of the following was removed from DRM stack
614	* in 5.14, so we need to do it manually. */
615	vboxbo->bo.base.funcs = &vbox_drm_gem_object_funcs;
616	kref_init(&vboxbo->bo.base.refcount);
617	vboxbo->bo.base.size = size;
618	vboxbo->bo.base.dev = dev;
619	dma_resv_init(&vboxbo->bo.base._resv);
620	drm_vma_node_reset(&vboxbo->bo.base.vma_node);
621	#endif
622
623	ret = ttm_bo_init(&vbox->ttm.bdev, &vboxbo->bo, size,
624	ttm_bo_type_device, &vboxbo->placement,
625	#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)
626	align >> PAGE_SHIFT, false, NULL, acc_size,
627	#elif RTLNX_VER_MAX(5,13,0) /* < 5.13.0 */
628	align >> PAGE_SHIFT, false, acc_size,
629	#else /* > 5.13.0 */
630	align >> PAGE_SHIFT, false,
631	#endif /* > 5.13.0 */
632	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
633	NULL, NULL, vbox_bo_ttm_destroy);
634	#else
635	NULL, vbox_bo_ttm_destroy);
636	#endif
637	if (ret)
638	{
639	/* In case of failure, ttm_bo_init() supposed to call
640	* vbox_bo_ttm_destroy() which in turn will free @vboxbo. */
641	goto err_exit;
642	}
643
644	*pvboxbo = vboxbo;
645
646	return 0;
647
648	err_free_vboxbo:
649	kfree(vboxbo);
650	err_exit:
651	return ret;
652	}
653
654	static inline u64 vbox_bo_gpu_offset(struct vbox_bo *bo)
655	{
656	#if RTLNX_VER_MIN(5,14,0)
657	return bo->bo.resource->start << PAGE_SHIFT;
658	#elif RTLNX_VER_MIN(5,9,0) \|\| RTLNX_RHEL_MIN(8,4) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
659	return bo->bo.mem.start << PAGE_SHIFT;
660	#else
661	return bo->bo.offset;
662	#endif
663	}
664
665	int vbox_bo_pin(struct vbox_bo bo, u32 mem_type, u64 gpu_addr)
666	{
667	#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)
668	struct ttm_operation_ctx ctx = { false, false };
669	#endif
670	int ret;
671	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
672	int i;
673	#endif
674
675	if (bo->pin_count) {
676	bo->pin_count++;
677	if (gpu_addr)
678	*gpu_addr = vbox_bo_gpu_offset(bo);
679
680	return 0;
681	}
682
683	vbox_ttm_placement(bo, mem_type);
684
685	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
686	for (i = 0; i < bo->placement.num_placement; i++)
687	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
688	#endif
689
690	#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)
691	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
692	#else
693	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
694	#endif
695	if (ret)
696	return ret;
697
698	bo->pin_count = 1;
699
700	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
701	ttm_bo_pin(&bo->bo);
702	#endif
703
704	if (gpu_addr)
705	*gpu_addr = vbox_bo_gpu_offset(bo);
706
707	return 0;
708	}
709
710	int vbox_bo_unpin(struct vbox_bo *bo)
711	{
712	#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)
713	# if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
714	struct ttm_operation_ctx ctx = { false, false };
715	# endif
716	#endif
717	int ret = 0;
718	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
719	int i;
720	#endif
721
722	if (!bo->pin_count) {
723	DRM_ERROR("unpin bad %p\n", bo);
724	return 0;
725	}
726	bo->pin_count--;
727	if (bo->pin_count)
728	return 0;
729
730	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
731	for (i = 0; i < bo->placement.num_placement; i++)
732	PLACEMENT_FLAGS(bo->placements[i]) &= ~TTM_PL_FLAG_NO_EVICT;
733	#endif
734
735	#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)
736	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
737	#elif RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
738	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
739	#endif
740	if (ret)
741	return ret;
742
743	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
744	ttm_bo_unpin(&bo->bo);
745	#endif
746
747	return 0;
748	}
749
750	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
751	/*
752	* Move a vbox-owned buffer object to system memory if no one else has it
753	* pinned. The caller must have pinned it previously, and this call will
754	* release the caller's pin.
755	*/
756	int vbox_bo_push_sysram(struct vbox_bo *bo)
757	{
758	# 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)
759	struct ttm_operation_ctx ctx = { false, false };
760	# endif
761	int i, ret;
762
763	if (!bo->pin_count) {
764	DRM_ERROR("unpin bad %p\n", bo);
765	return 0;
766	}
767	bo->pin_count--;
768	if (bo->pin_count)
769	return 0;
770
771	if (bo->kmap.virtual)
772	ttm_bo_kunmap(&bo->kmap);
773
774	vbox_ttm_placement(bo, VBOX_MEM_TYPE_SYSTEM);
775
776	for (i = 0; i < bo->placement.num_placement; i++)
777	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
778
779	# 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)
780	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
781	# else
782	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
783	# endif
784	if (ret) {
785	DRM_ERROR("pushing to VRAM failed\n");
786	return ret;
787	}
788
789	return 0;
790	}
791	#endif
792
793	int vbox_mmap(struct file filp, struct vm_area_struct vma)
794	{
795	struct drm_file *file_priv;
796	struct vbox_private *vbox;
797	int ret = -EINVAL;
798
799	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
800	return -EINVAL;
801
802	file_priv = filp->private_data;
803	vbox = file_priv->minor->dev->dev_private;
804
805	#if RTLNX_VER_MIN(5,14,0)
806	if (drm_dev_is_unplugged(file_priv->minor->dev))
807	return -ENODEV;
808	ret = drm_gem_mmap(filp, vma);
809	#else
810	ret = ttm_bo_mmap(filp, vma, &vbox->ttm.bdev);
811	#endif
812	return ret;
813	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_ttm.c@ 93228

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