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