| /* |
| * Copyright 2020 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include <amdgpu_drm.h> |
| #include <ctype.h> |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <radeon_drm.h> |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <xf86drm.h> |
| #include <xf86drmMode.h> |
| |
| #include "minigbm_helpers.h" |
| #include "util.h" |
| |
| /* These are set in stone. from drm_pciids.h */ |
| static unsigned int radeon_igp_ids[] = { |
| 0x1304, 0x1305, 0x1306, 0x1307, 0x1309, 0x130A, 0x130B, 0x130C, 0x130D, 0x130E, 0x130F, |
| 0x1310, 0x1311, 0x1312, 0x1313, 0x1315, 0x1316, 0x1317, 0x1318, 0x131B, 0x131C, 0x131D, |
| 0x4136, 0x4137, 0x4237, 0x4336, 0x4337, 0x4437, 0x5834, 0x5835, 0x5954, 0x5955, 0x5974, |
| 0x5975, 0x5a41, 0x5a42, 0x5a61, 0x5a62, 0x7834, 0x7835, 0x791e, 0x791f, 0x793f, 0x7941, |
| 0x7942, 0x796c, 0x796d, 0x796e, 0x796f, 0x9610, 0x9611, 0x9612, 0x9613, 0x9614, 0x9615, |
| 0x9616, 0x9640, 0x9641, 0x9642, 0x9643, 0x9644, 0x9645, 0x9647, 0x9648, 0x9649, 0x964a, |
| 0x964b, 0x964c, 0x964e, 0x964f, 0x9710, 0x9711, 0x9712, 0x9713, 0x9714, 0x9715, 0x9802, |
| 0x9803, 0x9804, 0x9805, 0x9806, 0x9807, 0x9808, 0x9809, 0x980A, 0x9830, 0x9831, 0x9832, |
| 0x9833, 0x9834, 0x9835, 0x9836, 0x9837, 0x9838, 0x9839, 0x983a, 0x983b, 0x983c, 0x983d, |
| 0x983e, 0x983f, 0x9850, 0x9851, 0x9852, 0x9853, 0x9854, 0x9855, 0x9856, 0x9857, 0x9858, |
| 0x9859, 0x985A, 0x985B, 0x985C, 0x985D, 0x985E, 0x985F, 0x9900, 0x9901, 0x9903, 0x9904, |
| 0x9905, 0x9906, 0x9907, 0x9908, 0x9909, 0x990A, 0x990B, 0x990C, 0x990D, 0x990E, 0x990F, |
| 0x9910, 0x9913, 0x9917, 0x9918, 0x9919, 0x9990, 0x9991, 0x9992, 0x9993, 0x9994, 0x9995, |
| 0x9996, 0x9997, 0x9998, 0x9999, 0x999A, 0x999B, 0x999C, 0x999D, 0x99A0, 0x99A2, 0x99A4 |
| }; |
| |
| static int dri_node_num(const char *dri_node) |
| { |
| long num; |
| ssize_t l = strlen(dri_node); |
| |
| while (l > 0 && isdigit(dri_node[l - 1])) |
| l--; |
| num = strtol(dri_node + l, NULL, 10); |
| /* Normalize renderDX nodes with cardX nodes. */ |
| if (num >= 128) |
| num -= 128; |
| return num; |
| } |
| |
| static int fd_node_num(int fd) |
| { |
| char fd_path[64]; |
| char dri_node[256]; |
| ssize_t dri_node_size; |
| |
| snprintf(fd_path, sizeof(fd_path), "/proc/self/fd/%d", fd); |
| |
| dri_node_size = readlink(fd_path, dri_node, sizeof(dri_node)); |
| if (dri_node_size < 0) |
| return -errno; |
| dri_node[dri_node_size] = '\0'; |
| return dri_node_num(dri_node); |
| } |
| |
| #if 0 |
| static int |
| nouveau_getparam(int fd, uint64_t param, uint64_t *value) |
| { |
| struct drm_nouveau_getparam getparam = { .param = param, .value = 0 }; |
| int ret = drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &getparam, sizeof(getparam)); |
| *value = getparam.value; |
| return ret; |
| } |
| #endif |
| |
| /* |
| * One would wish we could read .driver_features from DRM driver. |
| */ |
| static int detect_device_info(unsigned int detect_flags, int fd, struct gbm_device_info *info) |
| { |
| drmVersionPtr version; |
| drmModeResPtr resources; |
| |
| info->dev_type_flags = 0; |
| |
| version = drmGetVersion(fd); |
| |
| if (!version) |
| return -EINVAL; |
| |
| resources = drmModeGetResources(fd); |
| if (resources) { |
| info->connectors = (unsigned int)(resources->count_connectors); |
| if (resources->count_connectors) |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY; |
| if (detect_flags & GBM_DETECT_FLAG_CONNECTED) { |
| int c; |
| for (c = 0; c < resources->count_connectors; c++) { |
| drmModeConnectorPtr conn = |
| drmModeGetConnector(fd, resources->connectors[c]); |
| if (!conn) |
| continue; |
| if (conn->connection == DRM_MODE_CONNECTED) |
| info->connected++; |
| if (conn->connector_type == DRM_MODE_CONNECTOR_eDP || |
| conn->connector_type == DRM_MODE_CONNECTOR_LVDS || |
| conn->connector_type == DRM_MODE_CONNECTOR_DSI || |
| conn->connector_type == DRM_MODE_CONNECTOR_DPI) |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_INTERNAL_LCD; |
| drmModeFreeConnector(conn); |
| } |
| } |
| drmModeFreeResources(resources); |
| } |
| |
| if (strncmp("i915", version->name, version->name_len) == 0) { |
| /* |
| * Detect Intel dGPU here when special getparam ioctl is added. |
| */ |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D; |
| } else if (strncmp("amdgpu", version->name, version->name_len) == 0) { |
| struct drm_amdgpu_info request = { 0 }; |
| struct drm_amdgpu_info_device dev_info = { 0 }; |
| int ret; |
| |
| info->dev_type_flags = GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D; |
| request.return_pointer = (uintptr_t)&dev_info; |
| request.return_size = sizeof(dev_info); |
| request.query = AMDGPU_INFO_DEV_INFO; |
| |
| ret = |
| drmCommandWrite(fd, DRM_AMDGPU_INFO, &request, sizeof(struct drm_amdgpu_info)); |
| |
| if (ret != 0) |
| goto done; |
| if (!(dev_info.ids_flags & AMDGPU_IDS_FLAGS_FUSION)) |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISCRETE; |
| |
| } else if (strncmp("radeon", version->name, version->name_len) == 0) { |
| struct drm_radeon_info radinfo = { 0, 0, 0 }; |
| int ret; |
| uint32_t value = 0; |
| size_t d; |
| |
| info->dev_type_flags |= |
| GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_DISCRETE; |
| radinfo.request = RADEON_INFO_DEVICE_ID; |
| radinfo.value = (uintptr_t)&value; |
| ret = drmCommandWriteRead(fd, DRM_RADEON_INFO, &radinfo, |
| sizeof(struct drm_radeon_info)); |
| if (ret != 0) |
| goto done; |
| |
| for (d = 0; d < (sizeof(radeon_igp_ids) / sizeof(radeon_igp_ids[0])); d++) { |
| if (value == radeon_igp_ids[d]) { |
| info->dev_type_flags &= ~GBM_DEV_TYPE_FLAG_DISCRETE; |
| break; |
| } |
| } |
| |
| } else if (strncmp("nvidia", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= |
| GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_DISCRETE; |
| } else if (strncmp("nouveau", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= |
| GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_DISCRETE; |
| } else if (strncmp("msm", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= |
| GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("armada", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("exynos", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("mediatek", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("rockchip", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("omapdrm", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("vc4", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= |
| GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("etnaviv", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("lima", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("panfrost", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("pvr", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("v3d", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_3D | GBM_DEV_TYPE_FLAG_ARMSOC; |
| } else if (strncmp("vgem", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= GBM_DEV_TYPE_FLAG_BLOCKED; |
| } else if (strncmp("evdi", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= |
| GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_USB | GBM_DEV_TYPE_FLAG_BLOCKED; |
| } else if (strncmp("udl", version->name, version->name_len) == 0) { |
| info->dev_type_flags |= |
| GBM_DEV_TYPE_FLAG_DISPLAY | GBM_DEV_TYPE_FLAG_USB | GBM_DEV_TYPE_FLAG_BLOCKED; |
| } |
| |
| done: |
| drmFreeVersion(version); |
| return 0; |
| } |
| |
| PUBLIC int gbm_get_default_device_fd(void) |
| { |
| DIR *dir; |
| int ret, fd, dfd = -1; |
| char *rendernode_name; |
| struct dirent *dir_ent; |
| struct gbm_device_info info; |
| |
| dir = opendir("/dev/dri"); |
| if (!dir) |
| return -errno; |
| |
| fd = -1; |
| while ((dir_ent = readdir(dir))) { |
| if (dir_ent->d_type != DT_CHR) |
| continue; |
| |
| if (strncmp(dir_ent->d_name, "renderD", 7)) |
| continue; |
| |
| ret = asprintf(&rendernode_name, "/dev/dri/%s", dir_ent->d_name); |
| if (ret < 0) |
| continue; |
| |
| fd = open(rendernode_name, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); |
| free(rendernode_name); |
| |
| if (fd < 0) |
| continue; |
| |
| memset(&info, 0, sizeof(info)); |
| if (detect_device_info(0, fd, &info) < 0) { |
| close(fd); |
| fd = -1; |
| continue; |
| } |
| |
| if (info.dev_type_flags & GBM_DEV_TYPE_FLAG_BLOCKED) { |
| close(fd); |
| fd = -1; |
| continue; |
| } |
| |
| if (!(info.dev_type_flags & GBM_DEV_TYPE_FLAG_DISPLAY)) { |
| close(fd); |
| fd = -1; |
| continue; |
| } |
| |
| if (info.dev_type_flags & GBM_DEV_TYPE_FLAG_DISCRETE) { |
| if (dfd < 0) |
| dfd = fd; |
| else |
| close(fd); |
| fd = -1; |
| } else { |
| if (dfd >= 0) { |
| close(dfd); |
| dfd = -1; |
| } |
| break; |
| } |
| } |
| |
| closedir(dir); |
| |
| if (dfd >= 0) |
| return dfd; |
| |
| return fd; |
| } |
| |
| PUBLIC int gbm_detect_device_info(unsigned int detect_flags, int fd, struct gbm_device_info *info) |
| { |
| if (!info) |
| return -EINVAL; |
| memset(info, 0, sizeof(*info)); |
| info->dri_node_num = fd_node_num(fd); |
| return detect_device_info(detect_flags, fd, info); |
| } |
| |
| PUBLIC int gbm_detect_device_info_path(unsigned int detect_flags, const char *dev_node, |
| struct gbm_device_info *info) |
| { |
| char rendernode_name[64]; |
| int fd; |
| int ret; |
| |
| if (!info) |
| return -EINVAL; |
| memset(info, 0, sizeof(*info)); |
| info->dri_node_num = dri_node_num(dev_node); |
| |
| snprintf(rendernode_name, sizeof(rendernode_name), "/dev/dri/renderD%d", |
| info->dri_node_num + 128); |
| fd = open(rendernode_name, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); |
| if (fd < 0) |
| return -errno; |
| ret = detect_device_info(detect_flags, fd, info); |
| close(fd); |
| return ret; |
| } |