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 "nouveau_drm.h" 40 41 struct nouveau_bo 42 { 43 struct kms_bo base; 44 uint64_t map_handle; 45 unsigned map_count; 46 }; 47 48 static int 49 nouveau_get_prop(struct kms_driver *kms, unsigned key, unsigned *out) 50 { 51 switch (key) { 52 case KMS_BO_TYPE: 53 *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8; 54 break; 55 default: 56 return -EINVAL; 57 } 58 return 0; 59 } 60 61 static int 62 nouveau_destroy(struct kms_driver *kms) 63 { 64 free(kms); 65 return 0; 66 } 67 68 static int 69 nouveau_bo_create(struct kms_driver *kms, 70 const unsigned width, const unsigned height, 71 const enum kms_bo_type type, const unsigned *attr, 72 struct kms_bo **out) 73 { 74 struct drm_nouveau_gem_new arg; 75 unsigned size, pitch; 76 struct nouveau_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 case KMS_BO_TYPE: 84 break; 85 default: 86 return -EINVAL; 87 } 88 } 89 90 bo = calloc(1, sizeof(*bo)); 91 if (!bo) 92 return -ENOMEM; 93 94 if (type == KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8) { 95 pitch = 64 * 4; 96 size = 64 * 64 * 4; 97 } else if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8) { 98 pitch = width * 4; 99 pitch = (pitch + 512 - 1) & ~(512 - 1); 100 size = pitch * height; 101 } else { 102 free(bo); 103 return -EINVAL; 104 } 105 106 memset(&arg, 0, sizeof(arg)); 107 arg.info.size = size; 108 arg.info.domain = NOUVEAU_GEM_DOMAIN_MAPPABLE | NOUVEAU_GEM_DOMAIN_VRAM; 109 arg.info.tile_mode = 0; 110 arg.info.tile_flags = 0; 111 arg.align = 512; 112 arg.channel_hint = 0; 113 114 ret = drmCommandWriteRead(kms->fd, DRM_NOUVEAU_GEM_NEW, &arg, sizeof(arg)); 115 if (ret) 116 goto err_free; 117 118 bo->base.kms = kms; 119 bo->base.handle = arg.info.handle; 120 bo->base.size = size; 121 bo->base.pitch = pitch; 122 bo->map_handle = arg.info.map_handle; 123 124 *out = &bo->base; 125 126 return 0; 127 128 err_free: 129 free(bo); 130 return ret; 131 } 132 133 static int 134 nouveau_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out) 135 { 136 switch (key) { 137 default: 138 return -EINVAL; 139 } 140 } 141 142 static int 143 nouveau_bo_map(struct kms_bo *_bo, void **out) 144 { 145 struct nouveau_bo *bo = (struct nouveau_bo *)_bo; 146 void *map = NULL; 147 148 if (bo->base.ptr) { 149 bo->map_count++; 150 *out = bo->base.ptr; 151 return 0; 152 } 153 154 map = drm_mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, bo->map_handle); 155 if (map == MAP_FAILED) 156 return -errno; 157 158 bo->base.ptr = map; 159 bo->map_count++; 160 *out = bo->base.ptr; 161 162 return 0; 163 } 164 165 static int 166 nouveau_bo_unmap(struct kms_bo *_bo) 167 { 168 struct nouveau_bo *bo = (struct nouveau_bo *)_bo; 169 bo->map_count--; 170 return 0; 171 } 172 173 static int 174 nouveau_bo_destroy(struct kms_bo *_bo) 175 { 176 struct nouveau_bo *bo = (struct nouveau_bo *)_bo; 177 struct drm_gem_close arg; 178 int ret; 179 180 if (bo->base.ptr) { 181 /* XXX Sanity check map_count */ 182 drm_munmap(bo->base.ptr, bo->base.size); 183 bo->base.ptr = NULL; 184 } 185 186 memset(&arg, 0, sizeof(arg)); 187 arg.handle = bo->base.handle; 188 189 ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg); 190 if (ret) 191 return -errno; 192 193 free(bo); 194 return 0; 195 } 196 197 drm_private int 198 nouveau_create(int fd, struct kms_driver **out) 199 { 200 struct kms_driver *kms; 201 202 kms = calloc(1, sizeof(*kms)); 203 if (!kms) 204 return -ENOMEM; 205 206 kms->fd = fd; 207 208 kms->bo_create = nouveau_bo_create; 209 kms->bo_map = nouveau_bo_map; 210 kms->bo_unmap = nouveau_bo_unmap; 211 kms->bo_get_prop = nouveau_bo_get_prop; 212 kms->bo_destroy = nouveau_bo_destroy; 213 kms->get_prop = nouveau_get_prop; 214 kms->destroy = nouveau_destroy; 215 *out = kms; 216 217 return 0; 218 } 219
