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