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 <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include "internal.h"
38
39 #include <sys/ioctl.h>
40 #include "xf86drm.h"
41 #include "libdrm_macros.h"
42
43 #include "radeon_drm.h"
44
45
46 #define ALIGNMENT 512
47
48 struct radeon_bo
49 {
50 struct kms_bo base;
51 unsigned map_count;
52 };
53
54 static int
radeon_get_prop(struct kms_driver * kms,unsigned key,unsigned * out)55 radeon_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
56 {
57 switch (key) {
58 case KMS_BO_TYPE:
59 *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
60 break;
61 default:
62 return -EINVAL;
63 }
64 return 0;
65 }
66
67 static int
radeon_destroy(struct kms_driver * kms)68 radeon_destroy(struct kms_driver *kms)
69 {
70 free(kms);
71 return 0;
72 }
73
74 static int
radeon_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)75 radeon_bo_create(struct kms_driver *kms,
76 const unsigned width, const unsigned height,
77 const enum kms_bo_type type, const unsigned *attr,
78 struct kms_bo **out)
79 {
80 struct drm_radeon_gem_create arg;
81 unsigned size, pitch;
82 struct radeon_bo *bo;
83 int i, ret;
84
85 for (i = 0; attr[i]; i += 2) {
86 switch (attr[i]) {
87 case KMS_WIDTH:
88 case KMS_HEIGHT:
89 case KMS_BO_TYPE:
90 break;
91 default:
92 return -EINVAL;
93 }
94 }
95
96 switch (type) {
97 case KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8:
98 pitch = 4 * 64;
99 size = 4 * 64 * 64;
100 break;
101 case KMS_BO_TYPE_SCANOUT_X8R8G8B8:
102 pitch = width * 4;
103 pitch = (pitch + ALIGNMENT - 1) & ~(ALIGNMENT - 1);
104 size = pitch * height;
105 break;
106 default:
107 return -EINVAL;
108 }
109
110 bo = calloc(1, sizeof(*bo));
111 if (!bo)
112 return -ENOMEM;
113
114 memset(&arg, 0, sizeof(arg));
115 arg.size = size;
116 arg.alignment = ALIGNMENT;
117 arg.initial_domain = RADEON_GEM_DOMAIN_CPU;
118 arg.flags = 0;
119 arg.handle = 0;
120
121 ret = drmCommandWriteRead(kms->fd, DRM_RADEON_GEM_CREATE,
122 &arg, sizeof(arg));
123 if (ret)
124 goto err_free;
125
126 bo->base.kms = kms;
127 bo->base.handle = arg.handle;
128 bo->base.size = size;
129 bo->base.pitch = pitch;
130 bo->base.offset = 0;
131 bo->map_count = 0;
132
133 *out = &bo->base;
134
135 return 0;
136
137 err_free:
138 free(bo);
139 return ret;
140 }
141
142 static int
radeon_bo_get_prop(struct kms_bo * bo,unsigned key,unsigned * out)143 radeon_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
144 {
145 switch (key) {
146 default:
147 return -EINVAL;
148 }
149 }
150
151 static int
radeon_bo_map(struct kms_bo * _bo,void ** out)152 radeon_bo_map(struct kms_bo *_bo, void **out)
153 {
154 struct radeon_bo *bo = (struct radeon_bo *)_bo;
155 struct drm_radeon_gem_mmap arg;
156 void *map = NULL;
157 int ret;
158
159 if (bo->base.ptr) {
160 bo->map_count++;
161 *out = bo->base.ptr;
162 return 0;
163 }
164
165 memset(&arg, 0, sizeof(arg));
166 arg.handle = bo->base.handle;
167 arg.offset = bo->base.offset;
168 arg.size = (uint64_t)bo->base.size;
169
170 ret = drmCommandWriteRead(bo->base.kms->fd, DRM_RADEON_GEM_MMAP,
171 &arg, sizeof(arg));
172 if (ret)
173 return -errno;
174
175 map = drm_mmap(0, arg.size, PROT_READ | PROT_WRITE, MAP_SHARED,
176 bo->base.kms->fd, arg.addr_ptr);
177 if (map == MAP_FAILED)
178 return -errno;
179
180 bo->base.ptr = map;
181 bo->map_count++;
182 *out = bo->base.ptr;
183
184 return 0;
185 }
186
187 static int
radeon_bo_unmap(struct kms_bo * _bo)188 radeon_bo_unmap(struct kms_bo *_bo)
189 {
190 struct radeon_bo *bo = (struct radeon_bo *)_bo;
191 if (--bo->map_count == 0) {
192 drm_munmap(bo->base.ptr, bo->base.size);
193 bo->base.ptr = NULL;
194 }
195 return 0;
196 }
197
198 static int
radeon_bo_destroy(struct kms_bo * _bo)199 radeon_bo_destroy(struct kms_bo *_bo)
200 {
201 struct radeon_bo *bo = (struct radeon_bo *)_bo;
202 struct drm_gem_close arg;
203 int ret;
204
205 if (bo->base.ptr) {
206 /* XXX Sanity check map_count */
207 drm_munmap(bo->base.ptr, bo->base.size);
208 bo->base.ptr = NULL;
209 }
210
211 memset(&arg, 0, sizeof(arg));
212 arg.handle = bo->base.handle;
213
214 ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg);
215 if (ret)
216 return -errno;
217
218 free(bo);
219 return 0;
220 }
221
222 drm_private int
radeon_create(int fd,struct kms_driver ** out)223 radeon_create(int fd, struct kms_driver **out)
224 {
225 struct kms_driver *kms;
226
227 kms = calloc(1, sizeof(*kms));
228 if (!kms)
229 return -ENOMEM;
230
231 kms->fd = fd;
232
233 kms->bo_create = radeon_bo_create;
234 kms->bo_map = radeon_bo_map;
235 kms->bo_unmap = radeon_bo_unmap;
236 kms->bo_get_prop = radeon_bo_get_prop;
237 kms->bo_destroy = radeon_bo_destroy;
238 kms->get_prop = radeon_get_prop;
239 kms->destroy = radeon_destroy;
240 *out = kms;
241
242 return 0;
243 }
244