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 #ifdef HAVE_CONFIG_H
30 #include "config.h"
31 #endif
32
33 #include <errno.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include "internal.h"
37
38 #include "xf86drm.h"
39 #include "libdrm_macros.h"
40 #include "vmwgfx_drm.h"
41
42 struct vmwgfx_bo
43 {
44 struct kms_bo base;
45 uint64_t map_handle;
46 unsigned map_count;
47 };
48
49 static int
vmwgfx_get_prop(struct kms_driver * kms,unsigned key,unsigned * out)50 vmwgfx_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
51 {
52 switch (key) {
53 case KMS_BO_TYPE:
54 *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
55 break;
56 default:
57 return -EINVAL;
58 }
59 return 0;
60 }
61
62 static int
vmwgfx_destroy(struct kms_driver * kms)63 vmwgfx_destroy(struct kms_driver *kms)
64 {
65 free(kms);
66 return 0;
67 }
68
69 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)70 vmwgfx_bo_create(struct kms_driver *kms,
71 const unsigned width, const unsigned height,
72 const enum kms_bo_type type, const unsigned *attr,
73 struct kms_bo **out)
74 {
75 struct vmwgfx_bo *bo;
76 int i, ret;
77
78 for (i = 0; attr[i]; i += 2) {
79 switch (attr[i]) {
80 case KMS_WIDTH:
81 case KMS_HEIGHT:
82 case KMS_BO_TYPE:
83 break;
84 default:
85 return -EINVAL;
86 }
87 }
88
89 bo = calloc(1, sizeof(*bo));
90 if (!bo)
91 return -EINVAL;
92
93 {
94 union drm_vmw_alloc_dmabuf_arg arg;
95 struct drm_vmw_alloc_dmabuf_req *req = &arg.req;
96 struct drm_vmw_dmabuf_rep *rep = &arg.rep;
97
98 memset(&arg, 0, sizeof(arg));
99 req->size = width * height * 4;
100 bo->base.size = req->size;
101 bo->base.pitch = width * 4;
102 bo->base.kms = kms;
103
104 do {
105 ret = drmCommandWriteRead(bo->base.kms->fd,
106 DRM_VMW_ALLOC_DMABUF,
107 &arg, sizeof(arg));
108 } while (ret == -ERESTART);
109
110 if (ret)
111 goto err_free;
112
113 bo->base.handle = rep->handle;
114 bo->map_handle = rep->map_handle;
115 bo->base.handle = rep->cur_gmr_id;
116 bo->base.offset = rep->cur_gmr_offset;
117 }
118
119 *out = &bo->base;
120
121 return 0;
122
123 err_free:
124 free(bo);
125 return ret;
126 }
127
128 static int
vmwgfx_bo_get_prop(struct kms_bo * bo,unsigned key,unsigned * out)129 vmwgfx_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
130 {
131 switch (key) {
132 default:
133 return -EINVAL;
134 }
135 }
136
137 static int
vmwgfx_bo_map(struct kms_bo * _bo,void ** out)138 vmwgfx_bo_map(struct kms_bo *_bo, void **out)
139 {
140 struct vmwgfx_bo *bo = (struct vmwgfx_bo *)_bo;
141 void *map;
142
143 if (bo->base.ptr) {
144 bo->map_count++;
145 *out = bo->base.ptr;
146 return 0;
147 }
148
149 map = drm_mmap(NULL, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, bo->map_handle);
150 if (map == MAP_FAILED)
151 return -errno;
152
153 bo->base.ptr = map;
154 bo->map_count++;
155 *out = bo->base.ptr;
156
157 return 0;
158 }
159
160 static int
vmwgfx_bo_unmap(struct kms_bo * _bo)161 vmwgfx_bo_unmap(struct kms_bo *_bo)
162 {
163 struct vmwgfx_bo *bo = (struct vmwgfx_bo *)_bo;
164 bo->map_count--;
165 return 0;
166 }
167
168 static int
vmwgfx_bo_destroy(struct kms_bo * _bo)169 vmwgfx_bo_destroy(struct kms_bo *_bo)
170 {
171 struct vmwgfx_bo *bo = (struct vmwgfx_bo *)_bo;
172 struct drm_vmw_unref_dmabuf_arg arg;
173
174 if (bo->base.ptr) {
175 /* XXX Sanity check map_count */
176 drm_munmap(bo->base.ptr, bo->base.size);
177 bo->base.ptr = NULL;
178 }
179
180 memset(&arg, 0, sizeof(arg));
181 arg.handle = bo->base.handle;
182 drmCommandWrite(bo->base.kms->fd, DRM_VMW_UNREF_DMABUF, &arg, sizeof(arg));
183
184 free(bo);
185 return 0;
186 }
187
188 drm_private int
vmwgfx_create(int fd,struct kms_driver ** out)189 vmwgfx_create(int fd, struct kms_driver **out)
190 {
191 struct kms_driver *kms;
192
193 kms = calloc(1, sizeof(*kms));
194 if (!kms)
195 return -ENOMEM;
196
197 kms->fd = fd;
198
199 kms->bo_create = vmwgfx_bo_create;
200 kms->bo_map = vmwgfx_bo_map;
201 kms->bo_unmap = vmwgfx_bo_unmap;
202 kms->bo_get_prop = vmwgfx_bo_get_prop;
203 kms->bo_destroy = vmwgfx_bo_destroy;
204 kms->get_prop = vmwgfx_get_prop;
205 kms->destroy = vmwgfx_destroy;
206 *out = kms;
207 return 0;
208 }
209