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 "i915_drm.h" 40 41 struct intel_bo 42 { 43 struct kms_bo base; 44 unsigned map_count; 45 }; 46 47 static int 48 intel_get_prop(struct kms_driver *kms, unsigned key, unsigned *out) 49 { 50 switch (key) { 51 case KMS_BO_TYPE: 52 *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8; 53 break; 54 default: 55 return -EINVAL; 56 } 57 return 0; 58 } 59 60 static int 61 intel_destroy(struct kms_driver *kms) 62 { 63 free(kms); 64 return 0; 65 } 66 67 static int 68 intel_bo_create(struct kms_driver *kms, 69 const unsigned width, const unsigned height, 70 const enum kms_bo_type type, const unsigned *attr, 71 struct kms_bo **out) 72 { 73 struct drm_i915_gem_create arg; 74 unsigned size, pitch; 75 struct intel_bo *bo; 76 int i, ret; 77 78 for (i = 0; attr[i]; i += 2) { 79 switch (attr[i]) { 80 case KMS_WIDTH: 81 case KMS_HEIGHT: 82 case KMS_BO_TYPE: 83 break; 84 default: 85 return -EINVAL; 86 } 87 } 88 89 bo = calloc(1, sizeof(*bo)); 90 if (!bo) 91 return -ENOMEM; 92 93 if (type == KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8) { 94 pitch = 64 * 4; 95 size = 64 * 64 * 4; 96 } else if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8) { 97 pitch = width * 4; 98 pitch = (pitch + 512 - 1) & ~(512 - 1); 99 size = pitch * ((height + 4 - 1) & ~(4 - 1)); 100 } else { 101 free(bo); 102 return -EINVAL; 103 } 104 105 memset(&arg, 0, sizeof(arg)); 106 arg.size = size; 107 108 ret = drmCommandWriteRead(kms->fd, DRM_I915_GEM_CREATE, &arg, sizeof(arg)); 109 if (ret) 110 goto err_free; 111 112 bo->base.kms = kms; 113 bo->base.handle = arg.handle; 114 bo->base.size = size; 115 bo->base.pitch = pitch; 116 117 *out = &bo->base; 118 if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8 && pitch > 512) { 119 struct drm_i915_gem_set_tiling tile; 120 121 memset(&tile, 0, sizeof(tile)); 122 tile.handle = bo->base.handle; 123 tile.tiling_mode = I915_TILING_X; 124 tile.stride = bo->base.pitch; 125 126 ret = drmCommandWriteRead(kms->fd, DRM_I915_GEM_SET_TILING, &tile, sizeof(tile)); 127 #if 0 128 if (ret) { 129 kms_bo_destroy(out); 130 return ret; 131 } 132 #endif 133 } 134 135 return 0; 136 137 err_free: 138 free(bo); 139 return ret; 140 } 141 142 static int 143 intel_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 152 intel_bo_map(struct kms_bo *_bo, void **out) 153 { 154 struct intel_bo *bo = (struct intel_bo *)_bo; 155 struct drm_i915_gem_mmap_gtt 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; 167 168 ret = drmCommandWriteRead(bo->base.kms->fd, DRM_I915_GEM_MMAP_GTT, &arg, sizeof(arg)); 169 if (ret) 170 return ret; 171 172 map = drm_mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset); 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 intel_bo_unmap(struct kms_bo *_bo) 185 { 186 struct intel_bo *bo = (struct intel_bo *)_bo; 187 bo->map_count--; 188 return 0; 189 } 190 191 static int 192 intel_bo_destroy(struct kms_bo *_bo) 193 { 194 struct intel_bo *bo = (struct intel_bo *)_bo; 195 struct drm_gem_close arg; 196 int ret; 197 198 if (bo->base.ptr) { 199 /* XXX Sanity check map_count */ 200 drm_munmap(bo->base.ptr, bo->base.size); 201 bo->base.ptr = NULL; 202 } 203 204 memset(&arg, 0, sizeof(arg)); 205 arg.handle = bo->base.handle; 206 207 ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg); 208 if (ret) 209 return -errno; 210 211 free(bo); 212 return 0; 213 } 214 215 drm_private int 216 intel_create(int fd, struct kms_driver **out) 217 { 218 struct kms_driver *kms; 219 220 kms = calloc(1, sizeof(*kms)); 221 if (!kms) 222 return -ENOMEM; 223 224 kms->fd = fd; 225 226 kms->bo_create = intel_bo_create; 227 kms->bo_map = intel_bo_map; 228 kms->bo_unmap = intel_bo_unmap; 229 kms->bo_get_prop = intel_bo_get_prop; 230 kms->bo_destroy = intel_bo_destroy; 231 kms->get_prop = intel_get_prop; 232 kms->destroy = intel_destroy; 233 *out = kms; 234 235 return 0; 236 } 237
