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 #include <errno.h> 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <string.h> 33 #include "internal.h" 34 35 #include <sys/ioctl.h> 36 #include "xf86drm.h" 37 #include "libdrm_macros.h" 38 39 struct dumb_bo 40 { 41 struct kms_bo base; 42 unsigned map_count; 43 }; 44 45 static int 46 dumb_get_prop(struct kms_driver *kms, unsigned key, unsigned *out) 47 { 48 switch (key) { 49 case KMS_BO_TYPE: 50 *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8; 51 break; 52 default: 53 return -EINVAL; 54 } 55 return 0; 56 } 57 58 static int 59 dumb_destroy(struct kms_driver *kms) 60 { 61 free(kms); 62 return 0; 63 } 64 65 static int 66 dumb_bo_create(struct kms_driver *kms, 67 const unsigned width, const unsigned height, 68 const enum kms_bo_type type, const unsigned *attr, 69 struct kms_bo **out) 70 { 71 struct drm_mode_create_dumb arg; 72 struct dumb_bo *bo; 73 int i, ret; 74 75 for (i = 0; attr[i]; i += 2) { 76 switch (attr[i]) { 77 case KMS_WIDTH: 78 case KMS_HEIGHT: 79 break; 80 case KMS_BO_TYPE: 81 break; 82 default: 83 return -EINVAL; 84 } 85 } 86 87 bo = calloc(1, sizeof(*bo)); 88 if (!bo) 89 return -ENOMEM; 90 91 memset(&arg, 0, sizeof(arg)); 92 93 /* All BO_TYPE currently are 32bpp formats */ 94 arg.bpp = 32; 95 arg.width = width; 96 arg.height = height; 97 98 ret = drmIoctl(kms->fd, DRM_IOCTL_MODE_CREATE_DUMB, &arg); 99 if (ret) 100 goto err_free; 101 102 bo->base.kms = kms; 103 bo->base.handle = arg.handle; 104 bo->base.size = arg.size; 105 bo->base.pitch = arg.pitch; 106 107 *out = &bo->base; 108 109 return 0; 110 111 err_free: 112 free(bo); 113 return ret; 114 } 115 116 static int 117 dumb_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out) 118 { 119 switch (key) { 120 default: 121 return -EINVAL; 122 } 123 } 124 125 static int 126 dumb_bo_map(struct kms_bo *_bo, void **out) 127 { 128 struct dumb_bo *bo = (struct dumb_bo *)_bo; 129 struct drm_mode_map_dumb arg; 130 void *map = NULL; 131 int ret; 132 133 if (bo->base.ptr) { 134 bo->map_count++; 135 *out = bo->base.ptr; 136 return 0; 137 } 138 139 memset(&arg, 0, sizeof(arg)); 140 arg.handle = bo->base.handle; 141 142 ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_MODE_MAP_DUMB, &arg); 143 if (ret) 144 return ret; 145 146 map = drm_mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset); 147 if (map == MAP_FAILED) 148 return -errno; 149 150 bo->base.ptr = map; 151 bo->map_count++; 152 *out = bo->base.ptr; 153 154 return 0; 155 } 156 157 static int 158 dumb_bo_unmap(struct kms_bo *_bo) 159 { 160 struct dumb_bo *bo = (struct dumb_bo *)_bo; 161 bo->map_count--; 162 return 0; 163 } 164 165 static int 166 dumb_bo_destroy(struct kms_bo *_bo) 167 { 168 struct dumb_bo *bo = (struct dumb_bo *)_bo; 169 struct drm_mode_destroy_dumb arg; 170 int ret; 171 172 if (bo->base.ptr) { 173 /* XXX Sanity check map_count */ 174 drm_munmap(bo->base.ptr, bo->base.size); 175 bo->base.ptr = NULL; 176 } 177 178 memset(&arg, 0, sizeof(arg)); 179 arg.handle = bo->base.handle; 180 181 ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &arg); 182 if (ret) 183 return -errno; 184 185 free(bo); 186 return 0; 187 } 188 189 drm_private int 190 dumb_create(int fd, struct kms_driver **out) 191 { 192 struct kms_driver *kms; 193 int ret; 194 uint64_t cap = 0; 195 196 ret = drmGetCap(fd, DRM_CAP_DUMB_BUFFER, &cap); 197 if (ret || cap == 0) 198 return -EINVAL; 199 200 kms = calloc(1, sizeof(*kms)); 201 if (!kms) 202 return -ENOMEM; 203 204 kms->fd = fd; 205 206 kms->bo_create = dumb_bo_create; 207 kms->bo_map = dumb_bo_map; 208 kms->bo_unmap = dumb_bo_unmap; 209 kms->bo_get_prop = dumb_bo_get_prop; 210 kms->bo_destroy = dumb_bo_destroy; 211 kms->get_prop = dumb_get_prop; 212 kms->destroy = dumb_destroy; 213 *out = kms; 214 215 return 0; 216 } 217
