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 <stdlib.h> 35 #include <string.h> 36 #include "internal.h" 37 38 #include "xf86drm.h" 39 #include "libdrm_macros.h" 40 #include "vmwgfx_drm.h" 41 42 struct vmwgfx_bo 43 { 44 struct kms_bo base; 45 uint64_t map_handle; 46 unsigned map_count; 47 }; 48 49 static int 50 vmwgfx_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 vmwgfx_destroy(struct kms_driver *kms) 64 { 65 free(kms); 66 return 0; 67 } 68 69 static int 70 vmwgfx_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 vmwgfx_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 -EINVAL; 92 93 { 94 union drm_vmw_alloc_dmabuf_arg arg; 95 struct drm_vmw_alloc_dmabuf_req *req = &arg.req; 96 struct drm_vmw_dmabuf_rep *rep = &arg.rep; 97 98 memset(&arg, 0, sizeof(arg)); 99 req->size = width * height * 4; 100 bo->base.size = req->size; 101 bo->base.pitch = width * 4; 102 bo->base.kms = kms; 103 104 do { 105 ret = drmCommandWriteRead(bo->base.kms->fd, 106 DRM_VMW_ALLOC_DMABUF, 107 &arg, sizeof(arg)); 108 } while (ret == -ERESTART); 109 110 if (ret) 111 goto err_free; 112 113 bo->base.handle = rep->handle; 114 bo->map_handle = rep->map_handle; 115 bo->base.handle = rep->cur_gmr_id; 116 bo->base.offset = rep->cur_gmr_offset; 117 } 118 119 *out = &bo->base; 120 121 return 0; 122 123 err_free: 124 free(bo); 125 return ret; 126 } 127 128 static int 129 vmwgfx_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out) 130 { 131 switch (key) { 132 default: 133 return -EINVAL; 134 } 135 } 136 137 static int 138 vmwgfx_bo_map(struct kms_bo *_bo, void **out) 139 { 140 struct vmwgfx_bo *bo = (struct vmwgfx_bo *)_bo; 141 void *map; 142 143 if (bo->base.ptr) { 144 bo->map_count++; 145 *out = bo->base.ptr; 146 return 0; 147 } 148 149 map = drm_mmap(NULL, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, bo->map_handle); 150 if (map == MAP_FAILED) 151 return -errno; 152 153 bo->base.ptr = map; 154 bo->map_count++; 155 *out = bo->base.ptr; 156 157 return 0; 158 } 159 160 static int 161 vmwgfx_bo_unmap(struct kms_bo *_bo) 162 { 163 struct vmwgfx_bo *bo = (struct vmwgfx_bo *)_bo; 164 bo->map_count--; 165 return 0; 166 } 167 168 static int 169 vmwgfx_bo_destroy(struct kms_bo *_bo) 170 { 171 struct vmwgfx_bo *bo = (struct vmwgfx_bo *)_bo; 172 struct drm_vmw_unref_dmabuf_arg arg; 173 174 if (bo->base.ptr) { 175 /* XXX Sanity check map_count */ 176 drm_munmap(bo->base.ptr, bo->base.size); 177 bo->base.ptr = NULL; 178 } 179 180 memset(&arg, 0, sizeof(arg)); 181 arg.handle = bo->base.handle; 182 drmCommandWrite(bo->base.kms->fd, DRM_VMW_UNREF_DMABUF, &arg, sizeof(arg)); 183 184 free(bo); 185 return 0; 186 } 187 188 drm_private int 189 vmwgfx_create(int fd, struct kms_driver **out) 190 { 191 struct kms_driver *kms; 192 193 kms = calloc(1, sizeof(*kms)); 194 if (!kms) 195 return -ENOMEM; 196 197 kms->fd = fd; 198 199 kms->bo_create = vmwgfx_bo_create; 200 kms->bo_map = vmwgfx_bo_map; 201 kms->bo_unmap = vmwgfx_bo_unmap; 202 kms->bo_get_prop = vmwgfx_bo_get_prop; 203 kms->bo_destroy = vmwgfx_bo_destroy; 204 kms->get_prop = vmwgfx_get_prop; 205 kms->destroy = vmwgfx_destroy; 206 *out = kms; 207 return 0; 208 } 209
