Skip to content
Navigation Menu
Toggle navigation
Sign in
In this repository
All GitHub Enterprise
↵
Jump to
↵
No suggested jump to results
In this repository
All GitHub Enterprise
↵
Jump to
↵
In this organization
All GitHub Enterprise
↵
Jump to
↵
In this repository
All GitHub Enterprise
↵
Jump to
↵
Sign in
Reseting focus
You signed in with another tab or window.
Reload
to refresh your session.
You signed out in another tab or window.
Reload
to refresh your session.
You switched accounts on another tab or window.
Reload
to refresh your session.
Dismiss alert
{{ message }}
mariux64
/
linux
Public
Notifications
You must be signed in to change notification settings
Fork
0
Star
0
Code
Issues
2
Pull requests
0
Actions
Projects
0
Wiki
Security
Insights
Additional navigation options
Code
Issues
Pull requests
Actions
Projects
Wiki
Security
Insights
Files
3e93bc2
Breadcrumbs
linux
/
drivers
/
gpu
/
drm
/
virtio
/
virtgpu_object.c
Blame
Blame
Latest commit
History
History
251 lines (217 loc) · 6.82 KB
Breadcrumbs
linux
/
drivers
/
gpu
/
drm
/
virtio
/
virtgpu_object.c
Top
File metadata and controls
Code
Blame
251 lines (217 loc) · 6.82 KB
Raw
/* * Copyright (C) 2015 Red Hat, Inc. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial * portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include <drm/ttm/ttm_execbuf_util.h> #include "virtgpu_drv.h" static int virtio_gpu_virglrenderer_workaround = 1; module_param_named(virglhack, virtio_gpu_virglrenderer_workaround, int, 0400); static int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev, uint32_t *resid) { if (virtio_gpu_virglrenderer_workaround) { /* * Hack to avoid re-using resource IDs. * * virglrenderer versions up to (and including) 0.7.0 * can't deal with that. virglrenderer commit * "f91a9dd35715 Fix unlinking resources from hash * table." (Feb 2019) fixes the bug. */ static int handle; handle++; *resid = handle + 1; } else { int handle = ida_alloc(&vgdev->resource_ida, GFP_KERNEL); if (handle < 0) return handle; *resid = handle + 1; } return 0; } static void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id) { if (!virtio_gpu_virglrenderer_workaround) { ida_free(&vgdev->resource_ida, id - 1); } } static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo) { struct virtio_gpu_object *bo; struct virtio_gpu_device *vgdev; bo = container_of(tbo, struct virtio_gpu_object, tbo); vgdev = (struct virtio_gpu_device *)bo->gem_base.dev->dev_private; if (bo->created) virtio_gpu_cmd_unref_resource(vgdev, bo->hw_res_handle); if (bo->pages) virtio_gpu_object_free_sg_table(bo); if (bo->vmap) virtio_gpu_object_kunmap(bo); drm_gem_object_release(&bo->gem_base); virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); kfree(bo); } static void virtio_gpu_init_ttm_placement(struct virtio_gpu_object *vgbo) { u32 c = 1; vgbo->placement.placement = &vgbo->placement_code; vgbo->placement.busy_placement = &vgbo->placement_code; vgbo->placement_code.fpfn = 0; vgbo->placement_code.lpfn = 0; vgbo->placement_code.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT | TTM_PL_FLAG_NO_EVICT; vgbo->placement.num_placement = c; vgbo->placement.num_busy_placement = c; } int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, struct virtio_gpu_object_params *params, struct virtio_gpu_object **bo_ptr, struct virtio_gpu_fence *fence) { struct virtio_gpu_object *bo; size_t acc_size; int ret; *bo_ptr = NULL; acc_size = ttm_bo_dma_acc_size(&vgdev->mman.bdev, params->size, sizeof(struct virtio_gpu_object)); bo = kzalloc(sizeof(struct virtio_gpu_object), GFP_KERNEL); if (bo == NULL) return -ENOMEM; ret = virtio_gpu_resource_id_get(vgdev, &bo->hw_res_handle); if (ret < 0) { kfree(bo); return ret; } params->size = roundup(params->size, PAGE_SIZE); ret = drm_gem_object_init(vgdev->ddev, &bo->gem_base, params->size); if (ret != 0) { virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); kfree(bo); return ret; } bo->dumb = params->dumb; if (params->virgl) { virtio_gpu_cmd_resource_create_3d(vgdev, bo, params, fence); } else { virtio_gpu_cmd_create_resource(vgdev, bo, params, fence); } virtio_gpu_init_ttm_placement(bo); ret = ttm_bo_init(&vgdev->mman.bdev, &bo->tbo, params->size, ttm_bo_type_device, &bo->placement, 0, true, acc_size, NULL, NULL, &virtio_gpu_ttm_bo_destroy); /* ttm_bo_init failure will call the destroy */ if (ret != 0) return ret; if (fence) { struct virtio_gpu_fence_driver *drv = &vgdev->fence_drv; struct list_head validate_list; struct ttm_validate_buffer mainbuf; struct ww_acquire_ctx ticket; unsigned long irq_flags; bool signaled; INIT_LIST_HEAD(&validate_list); memset(&mainbuf, 0, sizeof(struct ttm_validate_buffer)); /* use a gem reference since unref list undoes them */ drm_gem_object_get(&bo->gem_base); mainbuf.bo = &bo->tbo; list_add(&mainbuf.head, &validate_list); ret = virtio_gpu_object_list_validate(&ticket, &validate_list); if (ret == 0) { spin_lock_irqsave(&drv->lock, irq_flags); signaled = virtio_fence_signaled(&fence->f); if (!signaled) /* virtio create command still in flight */ ttm_eu_fence_buffer_objects(&ticket, &validate_list, &fence->f); spin_unlock_irqrestore(&drv->lock, irq_flags); if (signaled) /* virtio create command finished */ ttm_eu_backoff_reservation(&ticket, &validate_list); } virtio_gpu_unref_list(&validate_list); } *bo_ptr = bo; return 0; } void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo) { bo->vmap = NULL; ttm_bo_kunmap(&bo->kmap); } int virtio_gpu_object_kmap(struct virtio_gpu_object *bo) { bool is_iomem; int r; WARN_ON(bo->vmap); r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap); if (r) return r; bo->vmap = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); return 0; } int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev, struct virtio_gpu_object *bo) { int ret; struct page **pages = bo->tbo.ttm->pages; int nr_pages = bo->tbo.num_pages; struct ttm_operation_ctx ctx = { .interruptible = false, .no_wait_gpu = false }; /* wtf swapping */ if (bo->pages) return 0; if (bo->tbo.ttm->state == tt_unpopulated) bo->tbo.ttm->bdev->driver->ttm_tt_populate(bo->tbo.ttm, &ctx); bo->pages = kmalloc(sizeof(struct sg_table), GFP_KERNEL); if (!bo->pages) goto out; ret = sg_alloc_table_from_pages(bo->pages, pages, nr_pages, 0, nr_pages << PAGE_SHIFT, GFP_KERNEL); if (ret) goto out; return 0; out: kfree(bo->pages); bo->pages = NULL; return -ENOMEM; } void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo) { sg_free_table(bo->pages); kfree(bo->pages); bo->pages = NULL; } int virtio_gpu_object_wait(struct virtio_gpu_object *bo, bool no_wait) { int r; r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL); if (unlikely(r != 0)) return r; r = ttm_bo_wait(&bo->tbo, true, no_wait); ttm_bo_unreserve(&bo->tbo); return r; }
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
You can’t perform that action at this time.