Dominik Behr | 8ff2bf8 | 2020-12-08 21:22:38 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2020 The Chromium OS Authors. All rights reserved. |
| 3 | * Use of this source code is governed by a BSD-style license that can be |
| 4 | * found in the LICENSE file. |
| 5 | */ |
| 6 | #include <ctype.h> |
| 7 | #include <dirent.h> |
| 8 | #include <drm/amdgpu_drm.h> |
| 9 | #include <drm/radeon_drm.h> |
| 10 | #include <errno.h> |
| 11 | #include <fcntl.h> |
| 12 | #include <stddef.h> |
| 13 | #include <stdio.h> |
| 14 | #include <stdlib.h> |
| 15 | #include <string.h> |
| 16 | #include <unistd.h> |
| 17 | #include <xf86drm.h> |
| 18 | #include <xf86drmMode.h> |
| 19 | |
| 20 | #include "minigbm_helpers.h" |
| 21 | #include "util.h" |
| 22 | |
| 23 | /* These are set in stone. from drm_pciids.h */ |
| 24 | static unsigned int radeon_igp_ids[] = { |
| 25 | 0x1304, 0x1305, 0x1306, 0x1307, 0x1309, 0x130A, 0x130B, 0x130C, 0x130D, 0x130E, 0x130F, |
| 26 | 0x1310, 0x1311, 0x1312, 0x1313, 0x1315, 0x1316, 0x1317, 0x1318, 0x131B, 0x131C, 0x131D, |
| 27 | 0x4136, 0x4137, 0x4237, 0x4336, 0x4337, 0x4437, 0x5834, 0x5835, 0x5954, 0x5955, 0x5974, |
| 28 | 0x5975, 0x5a41, 0x5a42, 0x5a61, 0x5a62, 0x7834, 0x7835, 0x791e, 0x791f, 0x793f, 0x7941, |
| 29 | 0x7942, 0x796c, 0x796d, 0x796e, 0x796f, 0x9610, 0x9611, 0x9612, 0x9613, 0x9614, 0x9615, |
| 30 | 0x9616, 0x9640, 0x9641, 0x9642, 0x9643, 0x9644, 0x9645, 0x9647, 0x9648, 0x9649, 0x964a, |
| 31 | 0x964b, 0x964c, 0x964e, 0x964f, 0x9710, 0x9711, 0x9712, 0x9713, 0x9714, 0x9715, 0x9802, |
| 32 | 0x9803, 0x9804, 0x9805, 0x9806, 0x9807, 0x9808, 0x9809, 0x980A, 0x9830, 0x9831, 0x9832, |
| 33 | 0x9833, 0x9834, 0x9835, 0x9836, 0x9837, 0x9838, 0x9839, 0x983a, 0x983b, 0x983c, 0x983d, |
| 34 | 0x983e, 0x983f, 0x9850, 0x9851, 0x9852, 0x9853, 0x9854, 0x9855, 0x9856, 0x9857, 0x9858, |
| 35 | 0x9859, 0x985A, 0x985B, 0x985C, 0x985D, 0x985E, 0x985F, 0x9900, 0x9901, 0x9903, 0x9904, |
| 36 | 0x9905, 0x9906, 0x9907, 0x9908, 0x9909, 0x990A, 0x990B, 0x990C, 0x990D, 0x990E, 0x990F, |
| 37 | 0x9910, 0x9913, 0x9917, 0x9918, 0x9919, 0x9990, 0x9991, 0x9992, 0x9993, 0x9994, 0x9995, |
| 38 | 0x9996, 0x9997, 0x9998, 0x9999, 0x999A, 0x999B, 0x999C, 0x999D, 0x99A0, 0x99A2, 0x99A4 |
| 39 | }; |
| 40 | |
| 41 | static int dri_node_num(const char *dri_node) |
| 42 | { |
| 43 | long num; |
| 44 | ssize_t l = strlen(dri_node); |
| 45 | |
| 46 | while (l > 0 && isdigit(dri_node[l - 1])) |
| 47 | l--; |
| 48 | num = strtol(dri_node + l, NULL, 10); |
| 49 | /* Normalize renderDX nodes with cardX nodes. */ |
| 50 | if (num >= 128) |
| 51 | num -= 128; |
| 52 | return num; |
| 53 | } |
| 54 | |
| 55 | static int fd_node_num(int fd) |
| 56 | { |
| 57 | char fd_path[64]; |
| 58 | char dri_node[256]; |
| 59 | ssize_t dri_node_size; |
| 60 | |
| 61 | snprintf(fd_path, sizeof(fd_path), "/proc/self/fd/%d", fd); |
| 62 | |
| 63 | dri_node_size = readlink(fd_path, dri_node, sizeof(dri_node)); |
| 64 | if (dri_node_size < 0) |
| 65 | return -1; |
| 66 | dri_node[dri_node_size] = '\0'; |
| 67 | return dri_node_num(dri_node); |
| 68 | } |
| 69 | |
| 70 | #if 0 |
| 71 | static int |
| 72 | nouveau_getparam(int fd, uint64_t param, uint64_t *value) |
| 73 | { |
| 74 | struct drm_nouveau_getparam getparam = { .param = param, .value = 0 }; |
| 75 | int ret = drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &getparam, sizeof(getparam)); |
| 76 | *value = getparam.value; |
| 77 | return ret; |
| 78 | } |
| 79 | #endif |
| 80 | |
| 81 | /* |
| 82 | * One would wish we could read .driver_features from DRM driver. |
| 83 | */ |
| 84 | static int detect_device_info(unsigned int detect_flags, int fd, struct gbm_device_info *info) |
| 85 | { |
| 86 | drmVersionPtr version; |
| 87 | drmModeResPtr resources; |
| 88 | |
| 89 | info->dev_type_flags = 0; |
| 90 | |
| 91 | version = drmGetVersion(fd); |
| 92 | |
| 93 | if (!version) |
| 94 | return -EINVAL; |
| 95 | |
| 96 | resources = drmModeGetResources(fd); |
| 97 | if (resources) { |
| 98 | info->connectors = (unsigned int)(resources->count_connectors); |
| 99 | if (resources->count_connectors) |
| 100 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY; |
| 101 | if (detect_flags & GBM_DETECT_FLAG_CONNECTED) { |
| 102 | int c; |
| 103 | for (c = 0; c < resources->count_connectors; c++) { |
| 104 | drmModeConnectorPtr conn = |
| 105 | drmModeGetConnector(fd, resources->connectors[c]); |
| 106 | if (!conn) |
| 107 | continue; |
| 108 | if (conn->connection == DRM_MODE_CONNECTED) |
| 109 | info->connected++; |
| 110 | if (conn->connector_type == DRM_MODE_CONNECTOR_eDP || |
| 111 | conn->connector_type == DRM_MODE_CONNECTOR_LVDS || |
| 112 | conn->connector_type == DRM_MODE_CONNECTOR_DSI || |
| 113 | conn->connector_type == DRM_MODE_CONNECTOR_DPI) |
| 114 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_INTERNAL_LCD; |
| 115 | drmModeFreeConnector(conn); |
| 116 | } |
| 117 | } |
| 118 | drmModeFreeResources(resources); |
| 119 | } |
| 120 | |
| 121 | if (strncmp("i915", version->name, version->name_len) == 0) { |
| 122 | /* |
| 123 | * Detect Intel dGPU here when special getparam ioctl is added. |
| 124 | */ |
| 125 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D; |
| 126 | } else if (strncmp("amdgpu", version->name, version->name_len) == 0) { |
| 127 | struct drm_amdgpu_info request = { 0 }; |
| 128 | struct drm_amdgpu_info_device dev_info = { 0 }; |
| 129 | int ret; |
| 130 | |
| 131 | info->dev_type_flags = GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D; |
| 132 | request.return_pointer = (uintptr_t)&dev_info; |
| 133 | request.return_size = sizeof(dev_info); |
| 134 | request.query = AMDGPU_INFO_DEV_INFO; |
| 135 | |
| 136 | ret = |
| 137 | drmCommandWrite(fd, DRM_AMDGPU_INFO, &request, sizeof(struct drm_amdgpu_info)); |
| 138 | |
| 139 | if (ret != 0) |
| 140 | goto done; |
| 141 | if (!(dev_info.ids_flags & AMDGPU_IDS_FLAGS_FUSION)) |
| 142 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISCRETE; |
| 143 | |
| 144 | } else if (strncmp("radeon", version->name, version->name_len) == 0) { |
| 145 | struct drm_radeon_info radinfo = { 0, 0, 0 }; |
| 146 | int ret; |
| 147 | uint32_t value = 0; |
| 148 | size_t d; |
| 149 | |
| 150 | info->dev_type_flags |= |
| 151 | GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_DISCRETE; |
| 152 | radinfo.request = RADEON_INFO_DEVICE_ID; |
| 153 | radinfo.value = (uintptr_t)&value; |
| 154 | ret = drmCommandWriteRead(fd, DRM_RADEON_INFO, &radinfo, |
| 155 | sizeof(struct drm_radeon_info)); |
| 156 | if (ret != 0) |
| 157 | goto done; |
| 158 | |
| 159 | for (d = 0; d < (sizeof(radeon_igp_ids) / sizeof(radeon_igp_ids[0])); d++) { |
| 160 | if (value == radeon_igp_ids[d]) { |
| 161 | info->dev_type_flags &= ~GBM_DEV_TYPE_FLAG_DISCRETE; |
| 162 | break; |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | } else if (strncmp("nvidia", version->name, version->name_len) == 0) { |
| 167 | info->dev_type_flags |= |
| 168 | GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_DISCRETE; |
| 169 | } else if (strncmp("nouveau", version->name, version->name_len) == 0) { |
| 170 | info->dev_type_flags |= |
| 171 | GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_DISCRETE; |
| 172 | } else if (strncmp("tegra", version->name, version->name_len) == 0) { |
| 173 | info->dev_type_flags |= |
| 174 | GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 175 | } else if (strncmp("msm", version->name, version->name_len) == 0) { |
| 176 | info->dev_type_flags |= |
| 177 | GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 178 | } else if (strncmp("armada", version->name, version->name_len) == 0) { |
| 179 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 180 | } else if (strncmp("exynos", version->name, version->name_len) == 0) { |
| 181 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 182 | } else if (strncmp("mediatek", version->name, version->name_len) == 0) { |
| 183 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 184 | } else if (strncmp("rockchip", version->name, version->name_len) == 0) { |
| 185 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 186 | } else if (strncmp("omapdrm", version->name, version->name_len) == 0) { |
| 187 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 188 | } else if (strncmp("vc4", version->name, version->name_len) == 0) { |
| 189 | info->dev_type_flags |= |
| 190 | GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 191 | } else if (strncmp("etnaviv", version->name, version->name_len) == 0) { |
| 192 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 193 | } else if (strncmp("lima", version->name, version->name_len) == 0) { |
| 194 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 195 | } else if (strncmp("panfrost", version->name, version->name_len) == 0) { |
| 196 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 197 | } else if (strncmp("pvr", version->name, version->name_len) == 0) { |
| 198 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 199 | } else if (strncmp("v3d", version->name, version->name_len) == 0) { |
| 200 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| 201 | } else if (strncmp("vgem", version->name, version->name_len) == 0) { |
| 202 | info->dev_type_flags |= GBM_DEV_TYPE_FLAG_BLOCKED; |
| 203 | } else if (strncmp("evdi", version->name, version->name_len) == 0) { |
| 204 | info->dev_type_flags |= |
| 205 | GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_USB | GBM_DEV_TYPE_FLAG_BLOCKED; |
| 206 | } else if (strncmp("udl", version->name, version->name_len) == 0) { |
| 207 | info->dev_type_flags |= |
| 208 | GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_USB | GBM_DEV_TYPE_FLAG_BLOCKED; |
| 209 | } |
| 210 | |
| 211 | done: |
| 212 | drmFreeVersion(version); |
| 213 | return 0; |
| 214 | } |
| 215 | |
| 216 | PUBLIC int gbm_get_default_device_fd(void) |
| 217 | { |
| 218 | DIR *dir; |
| 219 | int ret, fd, dfd = -1; |
| 220 | char *rendernode_name; |
| 221 | struct dirent *dir_ent; |
| 222 | struct gbm_device_info info; |
| 223 | |
| 224 | dir = opendir("/dev/dri"); |
| 225 | if (!dir) |
| 226 | return -1; |
| 227 | |
| 228 | fd = -1; |
| 229 | while ((dir_ent = readdir(dir))) { |
| 230 | if (dir_ent->d_type != DT_CHR) |
| 231 | continue; |
| 232 | |
| 233 | if (strncmp(dir_ent->d_name, "renderD", 7)) |
| 234 | continue; |
| 235 | |
| 236 | ret = asprintf(&rendernode_name, "/dev/dri/%s", dir_ent->d_name); |
| 237 | if (ret < 0) |
| 238 | continue; |
| 239 | |
| 240 | fd = open(rendernode_name, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); |
| 241 | free(rendernode_name); |
| 242 | |
| 243 | if (fd < 0) |
| 244 | continue; |
| 245 | |
| 246 | memset(&info, 0, sizeof(info)); |
| 247 | if (detect_device_info(0, fd, &info) < 0) { |
| 248 | close(fd); |
| 249 | fd = -1; |
| 250 | continue; |
| 251 | } |
| 252 | |
| 253 | if (info.dev_type_flags & GBM_DEV_TYPE_FLAG_BLOCKED) { |
| 254 | close(fd); |
| 255 | fd = -1; |
| 256 | continue; |
| 257 | } |
| 258 | |
| 259 | if (!(info.dev_type_flags & GBM_DEV_TYPE_FLAG_DISPLAY)) { |
| 260 | close(fd); |
| 261 | fd = -1; |
| 262 | continue; |
| 263 | } |
| 264 | |
| 265 | if (info.dev_type_flags & GBM_DEV_TYPE_FLAG_DISCRETE) { |
| 266 | if (dfd < 0) |
| 267 | dfd = fd; |
| 268 | else |
| 269 | close(fd); |
| 270 | fd = -1; |
| 271 | } else { |
| 272 | if (dfd >= 0) { |
| 273 | close(dfd); |
| 274 | dfd = -1; |
| 275 | } |
| 276 | break; |
| 277 | } |
| 278 | } |
| 279 | if (dfd >= 0) |
| 280 | return dfd; |
| 281 | |
| 282 | return fd; |
| 283 | } |
| 284 | |
| 285 | PUBLIC int gbm_detect_device_info(unsigned int detect_flags, int fd, struct gbm_device_info *info) |
| 286 | { |
| 287 | if (!info) |
| 288 | return -EINVAL; |
| 289 | memset(info, 0, sizeof(*info)); |
| 290 | info->dri_node_num = fd_node_num(fd); |
| 291 | return detect_device_info(detect_flags, fd, info); |
| 292 | } |
| 293 | |
| 294 | PUBLIC int gbm_detect_device_info_path(unsigned int detect_flags, const char *dev_node, |
| 295 | struct gbm_device_info *info) |
| 296 | { |
| 297 | char rendernode_name[64]; |
| 298 | int fd; |
| 299 | int ret; |
| 300 | |
| 301 | if (!info) |
| 302 | return -EINVAL; |
| 303 | memset(info, 0, sizeof(*info)); |
| 304 | info->dri_node_num = dri_node_num(dev_node); |
| 305 | |
| 306 | snprintf(rendernode_name, sizeof(rendernode_name), "/dev/dri/renderD%d", |
| 307 | info->dri_node_num + 128); |
| 308 | fd = open(rendernode_name, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); |
| 309 | if (fd < 0) |
| 310 | return -1; |
| 311 | ret = detect_device_info(detect_flags, fd, info); |
| 312 | close(fd); |
| 313 | return ret; |
| 314 | } |