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