blob: cea0b48532c98e0fa4d3afb8eb85b0aabca86c7a [file] [log] [blame] [edit]
/*
* 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;
}