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 "nouveau_drm.h"
44
45 struct nouveau_bo
46 {
47 struct kms_bo base;
48 uint64_t map_handle;
49 unsigned map_count;
50 };
51
52 static int
nouveau_get_prop(struct kms_driver * kms,unsigned key,unsigned * out)53 nouveau_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
54 {
55 switch (key) {
56 case KMS_BO_TYPE:
57 *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
58 break;
59 default:
60 return -EINVAL;
61 }
62 return 0;
63 }
64
65 static int
nouveau_destroy(struct kms_driver * kms)66 nouveau_destroy(struct kms_driver *kms)
67 {
68 free(kms);
69 return 0;
70 }
71
72 static int
nouveau_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)73 nouveau_bo_create(struct kms_driver *kms,
74 const unsigned width, const unsigned height,
75 const enum kms_bo_type type, const unsigned *attr,
76 struct kms_bo **out)
77 {
78 struct drm_nouveau_gem_new arg;
79 unsigned size, pitch;
80 struct nouveau_bo *bo;
81 int i, ret;
82
83 for (i = 0; attr[i]; i += 2) {
84 switch (attr[i]) {
85 case KMS_WIDTH:
86 case KMS_HEIGHT:
87 case KMS_BO_TYPE:
88 break;
89 default:
90 return -EINVAL;
91 }
92 }
93
94 bo = calloc(1, sizeof(*bo));
95 if (!bo)
96 return -ENOMEM;
97
98 if (type == KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8) {
99 pitch = 64 * 4;
100 size = 64 * 64 * 4;
101 } else if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8) {
102 pitch = width * 4;
103 pitch = (pitch + 512 - 1) & ~(512 - 1);
104 size = pitch * height;
105 } else {
106 free(bo);
107 return -EINVAL;
108 }
109
110 memset(&arg, 0, sizeof(arg));
111 arg.info.size = size;
112 arg.info.domain = NOUVEAU_GEM_DOMAIN_MAPPABLE | NOUVEAU_GEM_DOMAIN_VRAM;
113 arg.info.tile_mode = 0;
114 arg.info.tile_flags = 0;
115 arg.align = 512;
116 arg.channel_hint = 0;
117
118 ret = drmCommandWriteRead(kms->fd, DRM_NOUVEAU_GEM_NEW, &arg, sizeof(arg));
119 if (ret)
120 goto err_free;
121
122 bo->base.kms = kms;
123 bo->base.handle = arg.info.handle;
124 bo->base.size = size;
125 bo->base.pitch = pitch;
126 bo->map_handle = arg.info.map_handle;
127
128 *out = &bo->base;
129
130 return 0;
131
132 err_free:
133 free(bo);
134 return ret;
135 }
136
137 static int
nouveau_bo_get_prop(struct kms_bo * bo,unsigned key,unsigned * out)138 nouveau_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
139 {
140 switch (key) {
141 default:
142 return -EINVAL;
143 }
144 }
145
146 static int
nouveau_bo_map(struct kms_bo * _bo,void ** out)147 nouveau_bo_map(struct kms_bo *_bo, void **out)
148 {
149 struct nouveau_bo *bo = (struct nouveau_bo *)_bo;
150 void *map = NULL;
151
152 if (bo->base.ptr) {
153 bo->map_count++;
154 *out = bo->base.ptr;
155 return 0;
156 }
157
158 map = drm_mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, bo->map_handle);
159 if (map == MAP_FAILED)
160 return -errno;
161
162 bo->base.ptr = map;
163 bo->map_count++;
164 *out = bo->base.ptr;
165
166 return 0;
167 }
168
169 static int
nouveau_bo_unmap(struct kms_bo * _bo)170 nouveau_bo_unmap(struct kms_bo *_bo)
171 {
172 struct nouveau_bo *bo = (struct nouveau_bo *)_bo;
173 bo->map_count--;
174 return 0;
175 }
176
177 static int
nouveau_bo_destroy(struct kms_bo * _bo)178 nouveau_bo_destroy(struct kms_bo *_bo)
179 {
180 struct nouveau_bo *bo = (struct nouveau_bo *)_bo;
181 struct drm_gem_close arg;
182 int ret;
183
184 if (bo->base.ptr) {
185 /* XXX Sanity check map_count */
186 drm_munmap(bo->base.ptr, bo->base.size);
187 bo->base.ptr = NULL;
188 }
189
190 memset(&arg, 0, sizeof(arg));
191 arg.handle = bo->base.handle;
192
193 ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg);
194 if (ret)
195 return -errno;
196
197 free(bo);
198 return 0;
199 }
200
201 drm_private int
nouveau_create(int fd,struct kms_driver ** out)202 nouveau_create(int fd, struct kms_driver **out)
203 {
204 struct kms_driver *kms;
205
206 kms = calloc(1, sizeof(*kms));
207 if (!kms)
208 return -ENOMEM;
209
210 kms->fd = fd;
211
212 kms->bo_create = nouveau_bo_create;
213 kms->bo_map = nouveau_bo_map;
214 kms->bo_unmap = nouveau_bo_unmap;
215 kms->bo_get_prop = nouveau_bo_get_prop;
216 kms->bo_destroy = nouveau_bo_destroy;
217 kms->get_prop = nouveau_get_prop;
218 kms->destroy = nouveau_destroy;
219 *out = kms;
220
221 return 0;
222 }
223