Dave Airlie | bb99465 | 2011-02-09 13:41:49 +1000 | [diff] [blame] | 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 | |
Dave Airlie | bb99465 | 2011-02-09 13:41:49 +1000 | [diff] [blame] | 29 | #include <errno.h> |
| 30 | #include <stdio.h> |
| 31 | #include <stdlib.h> |
| 32 | #include <string.h> |
| 33 | #include "internal.h" |
| 34 | |
Dave Airlie | bb99465 | 2011-02-09 13:41:49 +1000 | [diff] [blame] | 35 | #include <sys/ioctl.h> |
| 36 | #include "xf86drm.h" |
Emil Velikov | 42465fe | 2015-04-05 15:51:59 +0100 | [diff] [blame] | 37 | #include "libdrm_macros.h" |
Dave Airlie | bb99465 | 2011-02-09 13:41:49 +1000 | [diff] [blame] | 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 | |
Chris Wilson | 61be940 | 2011-05-14 11:15:06 +0100 | [diff] [blame] | 93 | /* All BO_TYPE currently are 32bpp formats */ |
| 94 | arg.bpp = 32; |
Dave Airlie | bb99465 | 2011-02-09 13:41:49 +1000 | [diff] [blame] | 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 | |
Emil Velikov | dadc9ef | 2014-09-07 19:41:37 +0100 | [diff] [blame] | 146 | map = drm_mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset); |
Dave Airlie | bb99465 | 2011-02-09 13:41:49 +1000 | [diff] [blame] | 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 */ |
Emil Velikov | dadc9ef | 2014-09-07 19:41:37 +0100 | [diff] [blame] | 174 | drm_munmap(bo->base.ptr, bo->base.size); |
Dave Airlie | bb99465 | 2011-02-09 13:41:49 +1000 | [diff] [blame] | 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 | |
Emil Velikov | 983892d | 2015-03-23 23:24:48 +0000 | [diff] [blame] | 189 | drm_private int |
Dave Airlie | bb99465 | 2011-02-09 13:41:49 +1000 | [diff] [blame] | 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 | } |