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 struct dumb_bo 44 { 45 struct kms_bo base; 46 unsigned map_count; 47 }; 48 49 static int 50 dumb_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 63 dumb_destroy(struct kms_driver *kms) 64 { 65 free(kms); 66 return 0; 67 } 68 69 static int 70 dumb_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 drm_mode_create_dumb arg; 76 struct dumb_bo *bo; 77 int i, ret; 78 79 for (i = 0; attr[i]; i += 2) { 80 switch (attr[i]) { 81 case KMS_WIDTH: 82 case KMS_HEIGHT: 83 break; 84 case KMS_BO_TYPE: 85 break; 86 default: 87 return -EINVAL; 88 } 89 } 90 91 bo = calloc(1, sizeof(*bo)); 92 if (!bo) 93 return -ENOMEM; 94 95 memset(&arg, 0, sizeof(arg)); 96 97 /* All BO_TYPE currently are 32bpp formats */ 98 arg.bpp = 32; 99 arg.width = width; 100 arg.height = height; 101 102 ret = drmIoctl(kms->fd, DRM_IOCTL_MODE_CREATE_DUMB, &arg); 103 if (ret) 104 goto err_free; 105 106 bo->base.kms = kms; 107 bo->base.handle = arg.handle; 108 bo->base.size = arg.size; 109 bo->base.pitch = arg.pitch; 110 111 *out = &bo->base; 112 113 return 0; 114 115 err_free: 116 free(bo); 117 return ret; 118 } 119 120 static int 121 dumb_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out) 122 { 123 switch (key) { 124 default: 125 return -EINVAL; 126 } 127 } 128 129 static int 130 dumb_bo_map(struct kms_bo *_bo, void **out) 131 { 132 struct dumb_bo *bo = (struct dumb_bo *)_bo; 133 struct drm_mode_map_dumb arg; 134 void *map = NULL; 135 int ret; 136 137 if (bo->base.ptr) { 138 bo->map_count++; 139 *out = bo->base.ptr; 140 return 0; 141 } 142 143 memset(&arg, 0, sizeof(arg)); 144 arg.handle = bo->base.handle; 145 146 ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_MODE_MAP_DUMB, &arg); 147 if (ret) 148 return ret; 149 150 map = drm_mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset); 151 if (map == MAP_FAILED) 152 return -errno; 153 154 bo->base.ptr = map; 155 bo->map_count++; 156 *out = bo->base.ptr; 157 158 return 0; 159 } 160 161 static int 162 dumb_bo_unmap(struct kms_bo *_bo) 163 { 164 struct dumb_bo *bo = (struct dumb_bo *)_bo; 165 bo->map_count--; 166 return 0; 167 } 168 169 static int 170 dumb_bo_destroy(struct kms_bo *_bo) 171 { 172 struct dumb_bo *bo = (struct dumb_bo *)_bo; 173 struct drm_mode_destroy_dumb arg; 174 int ret; 175 176 if (bo->base.ptr) { 177 /* XXX Sanity check map_count */ 178 drm_munmap(bo->base.ptr, bo->base.size); 179 bo->base.ptr = NULL; 180 } 181 182 memset(&arg, 0, sizeof(arg)); 183 arg.handle = bo->base.handle; 184 185 ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &arg); 186 if (ret) 187 return -errno; 188 189 free(bo); 190 return 0; 191 } 192 193 drm_private int 194 dumb_create(int fd, struct kms_driver **out) 195 { 196 struct kms_driver *kms; 197 int ret; 198 uint64_t cap = 0; 199 200 ret = drmGetCap(fd, DRM_CAP_DUMB_BUFFER, &cap); 201 if (ret || cap == 0) 202 return -EINVAL; 203 204 kms = calloc(1, sizeof(*kms)); 205 if (!kms) 206 return -ENOMEM; 207 208 kms->fd = fd; 209 210 kms->bo_create = dumb_bo_create; 211 kms->bo_map = dumb_bo_map; 212 kms->bo_unmap = dumb_bo_unmap; 213 kms->bo_get_prop = dumb_bo_get_prop; 214 kms->bo_destroy = dumb_bo_destroy; 215 kms->get_prop = dumb_get_prop; 216 kms->destroy = dumb_destroy; 217 *out = kms; 218 219 return 0; 220 } 221
