vbox_ttm.c@ 96407

Last change on this file since 96407 was 96407, checked in by vboxsync, 2 years ago
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1	/* $Id: vbox_ttm.c 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 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 <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) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
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) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
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) && !RTLNX_RHEL_RANGE(8,6, 8,99)
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) && !RTLNX_RHEL_RANGE(8,6, 8,99)
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) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
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) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
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	#elif RTLNX_VER_MAX(5,19,0)
324	if (ttm_tt_init(tt, bo, page_flags, ttm_write_combined)) {
325	#else
326	if (ttm_tt_init(tt, bo, page_flags, ttm_write_combined, 0)) {
327	#endif
328	kfree(tt);
329	return NULL;
330	}
331
332	return tt;
333	}
334
335	#if RTLNX_VER_MAX(4,17,0)
336	# 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)
337	static int vbox_ttm_tt_populate(struct ttm_tt *ttm)
338	{
339	return ttm_pool_populate(ttm);
340	}
341	# else
342	static int vbox_ttm_tt_populate(struct ttm_tt *ttm,
343	struct ttm_operation_ctx *ctx)
344	{
345	return ttm_pool_populate(ttm, ctx);
346	}
347	# endif
348
349	static void vbox_ttm_tt_unpopulate(struct ttm_tt *ttm)
350	{
351	ttm_pool_unpopulate(ttm);
352	}
353	#endif
354
355	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
356	static int vbox_bo_move(struct ttm_buffer_object *bo, bool evict,
357	struct ttm_operation_ctx ctx, struct ttm_resource new_mem,
358	struct ttm_place *hop)
359	{
360	return ttm_bo_move_memcpy(bo, ctx, new_mem);
361	}
362	#endif
363
364	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
365	static struct ttm_device_funcs vbox_bo_driver = {
366	#else /* < 5.13.0 */
367	static struct ttm_bo_driver vbox_bo_driver = {
368	#endif /* < 5.13.0 */
369	.ttm_tt_create = vbox_ttm_tt_create,
370	#if RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
371	.ttm_tt_destroy = vbox_ttm_tt_destroy,
372	#endif
373	#if RTLNX_VER_MAX(4,17,0)
374	.ttm_tt_populate = vbox_ttm_tt_populate,
375	.ttm_tt_unpopulate = vbox_ttm_tt_unpopulate,
376	#endif
377	#if RTLNX_VER_MAX(5,10,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
378	.init_mem_type = vbox_bo_init_mem_type,
379	#endif
380	#if RTLNX_VER_MIN(4,10,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)
381	.eviction_valuable = ttm_bo_eviction_valuable,
382	#endif
383	.evict_flags = vbox_bo_evict_flags,
384	#if RTLNX_VER_MAX(5,14,0) && !RTLNX_RHEL_RANGE(8,6, 8,99)
385	.verify_access = vbox_bo_verify_access,
386	#endif
387	.io_mem_reserve = &vbox_ttm_io_mem_reserve,
388	.io_mem_free = &vbox_ttm_io_mem_free,
389	#if RTLNX_VER_MIN(4,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
390	# 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)
391	.io_mem_pfn = ttm_bo_default_io_mem_pfn,
392	# endif
393	#endif
394	#if (RTLNX_VER_RANGE(4,7,0, 4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)) && !RTLNX_RHEL_MAJ_PREREQ(7,5)
395	.lru_tail = &ttm_bo_default_lru_tail,
396	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
397	#endif
398	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
399	.move = &vbox_bo_move,
400	#endif
401	};
402
403	int vbox_mm_init(struct vbox_private *vbox)
404	{
405	int ret;
406	struct drm_device *dev = vbox->dev;
407	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
408	struct ttm_device *bdev = &vbox->ttm.bdev;
409	#else
410	struct ttm_bo_device *bdev = &vbox->ttm.bdev;
411	#endif
412
413	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
414	ret = vbox_ttm_global_init(vbox);
415	if (ret)
416	return ret;
417	#endif
418	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
419	ret = ttm_device_init(&vbox->ttm.bdev,
420	#else
421	ret = ttm_bo_device_init(&vbox->ttm.bdev,
422	#endif
423	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
424	vbox->ttm.bo_global_ref.ref.object,
425	#endif
426	&vbox_bo_driver,
427	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
428	dev->dev,
429	#endif
430	#if RTLNX_VER_MIN(3,15,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,1)
431	dev->anon_inode->i_mapping,
432	#endif
433	#if RTLNX_VER_MIN(5,5,0) \|\| RTLNX_RHEL_MIN(8,3) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
434	dev->vma_offset_manager,
435	#elif RTLNX_VER_MAX(5,2,0) && !RTLNX_RHEL_MAJ_PREREQ(8,2)
436	DRM_FILE_PAGE_OFFSET,
437	#endif
438	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
439	false,
440	#endif
441	true);
442	if (ret) {
443	DRM_ERROR("Error initialising bo driver; %d\n", ret);
444	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
445	goto err_ttm_global_release;
446	#else
447	return ret;
448	#endif
449	}
450
451	#if RTLNX_VER_MIN(5,10,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
452	ret = ttm_range_man_init(bdev, TTM_PL_VRAM, false,
453	vbox->available_vram_size >> PAGE_SHIFT);
454	#else
455	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
456	vbox->available_vram_size >> PAGE_SHIFT);
457	#endif
458	if (ret) {
459	DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
460	goto err_device_release;
461	}
462
463	#ifdef DRM_MTRR_WC
464	vbox->fb_mtrr = drm_mtrr_add(pci_resource_start(VBOX_DRM_TO_PCI_DEV(dev), 0),
465	pci_resource_len(VBOX_DRM_TO_PCI_DEV(dev), 0),
466	DRM_MTRR_WC);
467	#else
468	vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(VBOX_DRM_TO_PCI_DEV(dev), 0),
469	pci_resource_len(VBOX_DRM_TO_PCI_DEV(dev), 0));
470	#endif
471	return 0;
472
473	err_device_release:
474	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
475	ttm_device_fini(&vbox->ttm.bdev);
476	#else
477	ttm_bo_device_release(&vbox->ttm.bdev);
478	#endif
479	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
480	err_ttm_global_release:
481	vbox_ttm_global_release(vbox);
482	#endif
483	return ret;
484	}
485
486	void vbox_mm_fini(struct vbox_private *vbox)
487	{
488	#ifdef DRM_MTRR_WC
489	drm_mtrr_del(vbox->fb_mtrr,
490	pci_resource_start(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0),
491	pci_resource_len(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0), DRM_MTRR_WC);
492	#else
493	arch_phys_wc_del(vbox->fb_mtrr);
494	#endif
495	#if RTLNX_VER_MIN(5,13,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
496	ttm_device_fini(&vbox->ttm.bdev);
497	#else
498	ttm_bo_device_release(&vbox->ttm.bdev);
499	#endif
500	#if RTLNX_VER_MAX(5,0,0) && !RTLNX_RHEL_MAJ_PREREQ(7,7) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
501	vbox_ttm_global_release(vbox);
502	#endif
503	}
504
505	void vbox_ttm_placement(struct vbox_bo *bo, u32 mem_type)
506	{
507	u32 c = 0;
508	#if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
509	bo->placement.fpfn = 0;
510	bo->placement.lpfn = 0;
511	#else
512	unsigned int i;
513	#endif
514
515	bo->placement.placement = bo->placements;
516	bo->placement.busy_placement = bo->placements;
517
518	if (mem_type & VBOX_MEM_TYPE_VRAM) {
519	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
520	bo->placements[c].mem_type = TTM_PL_VRAM;
521	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
522	#elif RTLNX_VER_MIN(5,10,0)
523	bo->placements[c].mem_type = TTM_PL_VRAM;
524	PLACEMENT_FLAGS(bo->placements[c++]) =
525	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED;
526	#else
527	PLACEMENT_FLAGS(bo->placements[c++]) =
528	TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED \| TTM_PL_FLAG_VRAM;
529	#endif
530	}
531	if (mem_type & VBOX_MEM_TYPE_SYSTEM) {
532	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
533	bo->placements[c].mem_type = TTM_PL_SYSTEM;
534	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
535	#elif RTLNX_VER_MIN(5,10,0)
536	bo->placements[c].mem_type = TTM_PL_SYSTEM;
537	PLACEMENT_FLAGS(bo->placements[c++]) =
538	TTM_PL_MASK_CACHING;
539	#else
540	PLACEMENT_FLAGS(bo->placements[c++]) =
541	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
542	#endif
543	}
544	if (!c) {
545	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
546	bo->placements[c].mem_type = TTM_PL_SYSTEM;
547	PLACEMENT_FLAGS(bo->placements[c++]) = 0;
548	#elif RTLNX_VER_MIN(5,10,0)
549	bo->placements[c].mem_type = TTM_PL_SYSTEM;
550	PLACEMENT_FLAGS(bo->placements[c++]) =
551	TTM_PL_MASK_CACHING;
552	#else
553	PLACEMENT_FLAGS(bo->placements[c++]) =
554	TTM_PL_MASK_CACHING \| TTM_PL_FLAG_SYSTEM;
555	#endif
556	}
557
558	bo->placement.num_placement = c;
559	bo->placement.num_busy_placement = c;
560
561	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
562	for (i = 0; i < c; ++i) {
563	bo->placements[i].fpfn = 0;
564	bo->placements[i].lpfn = 0;
565	}
566	#endif
567	}
568
569	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
570	static const struct drm_gem_object_funcs vbox_drm_gem_object_funcs = {
571	.free = vbox_gem_free_object,
572	.print_info = drm_gem_ttm_print_info,
573	# if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
574	.mmap = drm_gem_ttm_mmap,
575	# endif
576	};
577	#endif
578
579	int vbox_bo_create(struct drm_device *dev, int size, int align,
580	u32 flags, struct vbox_bo **pvboxbo)
581	{
582	struct vbox_private *vbox = dev->dev_private;
583	struct vbox_bo *vboxbo;
584	#if RTLNX_VER_MAX(5,13,0) && !RTLNX_RHEL_RANGE(8,6, 8,99)
585	size_t acc_size;
586	#endif
587	int ret;
588
589	vboxbo = kzalloc(sizeof(*vboxbo), GFP_KERNEL);
590	if (!vboxbo)
591	return -ENOMEM;
592
593	ret = drm_gem_object_init(dev, &vboxbo->gem, size);
594	if (ret)
595	goto err_free_vboxbo;
596
597	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
598	if (!vboxbo->gem.funcs) {
599	vboxbo->gem.funcs = &vbox_drm_gem_object_funcs;
600	}
601	#endif
602	vboxbo->bo.bdev = &vbox->ttm.bdev;
603	#if RTLNX_VER_MAX(3,15,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
604	vboxbo->bo.bdev->dev_mapping = dev->dev_mapping;
605	#endif
606
607	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_VRAM \| VBOX_MEM_TYPE_SYSTEM);
608
609	#if RTLNX_VER_MAX(5,13,0) && !RTLNX_RHEL_RANGE(8,6, 8,99)
610	acc_size = ttm_bo_dma_acc_size(&vbox->ttm.bdev, size,
611	sizeof(struct vbox_bo));
612	#endif
613
614	#if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
615	/* Initialization of the following was removed from DRM stack
616	* in 5.14, so we need to do it manually. */
617	vboxbo->bo.base.funcs = &vbox_drm_gem_object_funcs;
618	kref_init(&vboxbo->bo.base.refcount);
619	vboxbo->bo.base.size = size;
620	vboxbo->bo.base.dev = dev;
621	dma_resv_init(&vboxbo->bo.base._resv);
622	drm_vma_node_reset(&vboxbo->bo.base.vma_node);
623	#endif
624
625	ret = ttm_bo_init(&vbox->ttm.bdev, &vboxbo->bo, size,
626	ttm_bo_type_device, &vboxbo->placement,
627	#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)
628	align >> PAGE_SHIFT, false, NULL, acc_size,
629	#elif RTLNX_VER_MAX(5,13,0) && !RTLNX_RHEL_RANGE(8,6, 8,99) /* < 5.13.0, < RHEL(8.6, 8.99) */
630	align >> PAGE_SHIFT, false, acc_size,
631	#else /* > 5.13.0 */
632	align >> PAGE_SHIFT, false,
633	#endif /* > 5.13.0 */
634	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
635	NULL, NULL, vbox_bo_ttm_destroy);
636	#else
637	NULL, vbox_bo_ttm_destroy);
638	#endif
639	if (ret)
640	{
641	/* In case of failure, ttm_bo_init() supposed to call
642	* vbox_bo_ttm_destroy() which in turn will free @vboxbo. */
643	goto err_exit;
644	}
645
646	*pvboxbo = vboxbo;
647
648	return 0;
649
650	err_free_vboxbo:
651	kfree(vboxbo);
652	err_exit:
653	return ret;
654	}
655
656	static inline u64 vbox_bo_gpu_offset(struct vbox_bo *bo)
657	{
658	#if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
659	return bo->bo.resource->start << PAGE_SHIFT;
660	#elif RTLNX_VER_MIN(5,9,0) \|\| RTLNX_RHEL_MIN(8,4) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
661	return bo->bo.mem.start << PAGE_SHIFT;
662	#else
663	return bo->bo.offset;
664	#endif
665	}
666
667	int vbox_bo_pin(struct vbox_bo bo, u32 mem_type, u64 gpu_addr)
668	{
669	#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)
670	struct ttm_operation_ctx ctx = { false, false };
671	#endif
672	int ret;
673	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
674	int i;
675	#endif
676
677	if (bo->pin_count) {
678	bo->pin_count++;
679	if (gpu_addr)
680	*gpu_addr = vbox_bo_gpu_offset(bo);
681
682	return 0;
683	}
684
685	vbox_ttm_placement(bo, mem_type);
686
687	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
688	for (i = 0; i < bo->placement.num_placement; i++)
689	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
690	#endif
691
692	#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)
693	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
694	#else
695	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
696	#endif
697	if (ret)
698	return ret;
699
700	bo->pin_count = 1;
701
702	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
703	ttm_bo_pin(&bo->bo);
704	#endif
705
706	if (gpu_addr)
707	*gpu_addr = vbox_bo_gpu_offset(bo);
708
709	return 0;
710	}
711
712	int vbox_bo_unpin(struct vbox_bo *bo)
713	{
714	#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)
715	# if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
716	struct ttm_operation_ctx ctx = { false, false };
717	# endif
718	#endif
719	int ret = 0;
720	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
721	int i;
722	#endif
723
724	if (!bo->pin_count) {
725	DRM_ERROR("unpin bad %p\n", bo);
726	return 0;
727	}
728	bo->pin_count--;
729	if (bo->pin_count)
730	return 0;
731
732	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
733	for (i = 0; i < bo->placement.num_placement; i++)
734	PLACEMENT_FLAGS(bo->placements[i]) &= ~TTM_PL_FLAG_NO_EVICT;
735	#endif
736
737	#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)
738	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
739	#elif RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
740	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
741	#endif
742	if (ret)
743	return ret;
744
745	#if RTLNX_VER_MIN(5,11,0) \|\| RTLNX_RHEL_RANGE(8,5, 8,99)
746	ttm_bo_unpin(&bo->bo);
747	#endif
748
749	return 0;
750	}
751
752	#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
753	/*
754	* Move a vbox-owned buffer object to system memory if no one else has it
755	* pinned. The caller must have pinned it previously, and this call will
756	* release the caller's pin.
757	*/
758	int vbox_bo_push_sysram(struct vbox_bo *bo)
759	{
760	# 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)
761	struct ttm_operation_ctx ctx = { false, false };
762	# endif
763	int i, ret;
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 (bo->kmap.virtual)
774	ttm_bo_kunmap(&bo->kmap);
775
776	vbox_ttm_placement(bo, VBOX_MEM_TYPE_SYSTEM);
777
778	for (i = 0; i < bo->placement.num_placement; i++)
779	PLACEMENT_FLAGS(bo->placements[i]) \|= TTM_PL_FLAG_NO_EVICT;
780
781	# 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)
782	ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
783	# else
784	ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
785	# endif
786	if (ret) {
787	DRM_ERROR("pushing to VRAM failed\n");
788	return ret;
789	}
790
791	return 0;
792	}
793	#endif
794
795	int vbox_mmap(struct file filp, struct vm_area_struct vma)
796	{
797	struct drm_file *file_priv;
798	struct vbox_private *vbox;
799	int ret = -EINVAL;
800
801	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
802	return -EINVAL;
803
804	file_priv = filp->private_data;
805	vbox = file_priv->minor->dev->dev_private;
806
807	#if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
808	(void)vbox;
809	if (drm_dev_is_unplugged(file_priv->minor->dev))
810	return -ENODEV;
811	ret = drm_gem_mmap(filp, vma);
812	#else
813	ret = ttm_bo_mmap(filp, vma, &vbox->ttm.bdev);
814	#endif
815	return ret;
816	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_ttm.c@ 96407

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