1 /**************************************************************************
2 *
3 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29 #include <errno.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include "internal.h"
33
34 #include "xf86drm.h"
35 #include "libdrm_macros.h"
36 #include "vmwgfx_drm.h"
37
38 struct vmwgfx_bo
39 {
40 struct kms_bo base;
41 uint64_t map_handle;
42 unsigned map_count;
43 };
44
45 static int
vmwgfx_get_prop(struct kms_driver * kms,unsigned key,unsigned * out)46 vmwgfx_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
47 {
48 switch (key) {
49 case KMS_BO_TYPE:
50 *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
51 break;
52 default:
53 return -EINVAL;
54 }
55 return 0;
56 }
57
58 static int
vmwgfx_destroy(struct kms_driver * kms)59 vmwgfx_destroy(struct kms_driver *kms)
60 {
61 free(kms);
62 return 0;
63 }
64
65 static int
vmwgfx_bo_create(struct kms_driver * kms,const unsigned width,const unsigned height,const enum kms_bo_type type,const unsigned * attr,struct kms_bo ** out)66 vmwgfx_bo_create(struct kms_driver *kms,
67 const unsigned width, const unsigned height,
68 const enum kms_bo_type type, const unsigned *attr,
69 struct kms_bo **out)
70 {
71 struct vmwgfx_bo *bo;
72 int i, ret;
73
74 for (i = 0; attr[i]; i += 2) {
75 switch (attr[i]) {
76 case KMS_WIDTH:
77 case KMS_HEIGHT:
78 case KMS_BO_TYPE:
79 break;
80 default:
81 return -EINVAL;
82 }
83 }
84
85 bo = calloc(1, sizeof(*bo));
86 if (!bo)
87 return -EINVAL;
88
89 {
90 union drm_vmw_alloc_dmabuf_arg arg;
91 struct drm_vmw_alloc_dmabuf_req *req = &arg.req;
92 struct drm_vmw_dmabuf_rep *rep = &arg.rep;
93
94 memset(&arg, 0, sizeof(arg));
95 req->size = width * height * 4;
96 bo->base.size = req->size;
97 bo->base.pitch = width * 4;
98 bo->base.kms = kms;
99
100 do {
101 ret = drmCommandWriteRead(bo->base.kms->fd,
102 DRM_VMW_ALLOC_DMABUF,
103 &arg, sizeof(arg));
104 } while (ret == -ERESTART);
105
106 if (ret)
107 goto err_free;
108
109 bo->base.handle = rep->handle;
110 bo->map_handle = rep->map_handle;
111 bo->base.handle = rep->cur_gmr_id;
112 bo->base.offset = rep->cur_gmr_offset;
113 }
114
115 *out = &bo->base;
116
117 return 0;
118
119 err_free:
120 free(bo);
121 return ret;
122 }
123
124 static int
vmwgfx_bo_get_prop(struct kms_bo * bo,unsigned key,unsigned * out)125 vmwgfx_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
126 {
127 switch (key) {
128 default:
129 return -EINVAL;
130 }
131 }
132
133 static int
vmwgfx_bo_map(struct kms_bo * _bo,void ** out)134 vmwgfx_bo_map(struct kms_bo *_bo, void **out)
135 {
136 struct vmwgfx_bo *bo = (struct vmwgfx_bo *)_bo;
137 void *map;
138
139 if (bo->base.ptr) {
140 bo->map_count++;
141 *out = bo->base.ptr;
142 return 0;
143 }
144
145 map = drm_mmap(NULL, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, bo->map_handle);
146 if (map == MAP_FAILED)
147 return -errno;
148
149 bo->base.ptr = map;
150 bo->map_count++;
151 *out = bo->base.ptr;
152
153 return 0;
154 }
155
156 static int
vmwgfx_bo_unmap(struct kms_bo * _bo)157 vmwgfx_bo_unmap(struct kms_bo *_bo)
158 {
159 struct vmwgfx_bo *bo = (struct vmwgfx_bo *)_bo;
160 bo->map_count--;
161 return 0;
162 }
163
164 static int
vmwgfx_bo_destroy(struct kms_bo * _bo)165 vmwgfx_bo_destroy(struct kms_bo *_bo)
166 {
167 struct vmwgfx_bo *bo = (struct vmwgfx_bo *)_bo;
168 struct drm_vmw_unref_dmabuf_arg arg;
169
170 if (bo->base.ptr) {
171 /* XXX Sanity check map_count */
172 drm_munmap(bo->base.ptr, bo->base.size);
173 bo->base.ptr = NULL;
174 }
175
176 memset(&arg, 0, sizeof(arg));
177 arg.handle = bo->base.handle;
178 drmCommandWrite(bo->base.kms->fd, DRM_VMW_UNREF_DMABUF, &arg, sizeof(arg));
179
180 free(bo);
181 return 0;
182 }
183
184 drm_private int
vmwgfx_create(int fd,struct kms_driver ** out)185 vmwgfx_create(int fd, struct kms_driver **out)
186 {
187 struct kms_driver *kms;
188
189 kms = calloc(1, sizeof(*kms));
190 if (!kms)
191 return -ENOMEM;
192
193 kms->fd = fd;
194
195 kms->bo_create = vmwgfx_bo_create;
196 kms->bo_map = vmwgfx_bo_map;
197 kms->bo_unmap = vmwgfx_bo_unmap;
198 kms->bo_get_prop = vmwgfx_bo_get_prop;
199 kms->bo_destroy = vmwgfx_bo_destroy;
200 kms->get_prop = vmwgfx_get_prop;
201 kms->destroy = vmwgfx_destroy;
202 *out = kms;
203 return 0;
204 }
205