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// SPDX-License-Identifier: MIT
/*
* Copyright © 2025 Intel Corporation
*/
#include <dirent.h>
#include <fcntl.h>
#include "igt.h"
#include "igt_debugfs.h"
#include "igt_dir.h"
#include "igt_sysfs.h"
#include "xe/xe_query.h"
struct {
bool warn_on_not_hit;
} opt = { 0 };
/**
* TEST: Xe debugfs test
* Description: Xe-specific debugfs tests. These are complementary to the
* core_debugfs and core_debugfs_display_on_off tests.
*
* Category: Core
* Mega feature: General Core features
* Sub-category: uapi
* Functionality: debugfs
* Feature: core
* Test category: uapi
*
*/
IGT_TEST_DESCRIPTION("Read entries from debugfs, and sysfs paths.");
static int xe_validate_entries(igt_dir_t *igt_dir,
const char * const str_val[], int str_cnt)
{
igt_dir_file_list_t *file_list_entry;
if (!igt_dir)
return -1;
igt_dir_scan_dirfd(igt_dir, -1);
for (int i = 0; i < str_cnt; i++) {
int hit = 0;
igt_list_for_each_entry(file_list_entry,
&igt_dir->file_list_head, link) {
if (strcmp(file_list_entry->relative_path,
str_val[i]) == 0) {
hit = 1;
break;
}
}
if (!hit && opt.warn_on_not_hit)
igt_warn("no test for: %s\n", str_val[i]);
}
return 0;
}
/**
* SUBTEST: xe-base
* Description: Check if various debugfs devnodes exist and test reading them
*/
static void
xe_test_base(int fd, struct drm_xe_query_config *config, igt_dir_t *igt_dir)
{
uint16_t devid = intel_get_drm_devid(fd);
static const char * const expected_files[] = {
"gt0",
"gt1",
"stolen_mm",
"gtt_mm",
"vram0_mm",
"forcewake_all",
"info",
"gem_names",
"clients",
"name"
};
char reference[4096];
int val = 0;
igt_assert(config);
sprintf(reference, "devid 0x%llx",
config->info[DRM_XE_QUERY_CONFIG_REV_AND_DEVICE_ID] & 0xffff);
igt_assert(igt_debugfs_search(fd, "info", reference));
sprintf(reference, "revid %lld",
config->info[DRM_XE_QUERY_CONFIG_REV_AND_DEVICE_ID] >> 16);
igt_assert(igt_debugfs_search(fd, "info", reference));
sprintf(reference, "is_dgfx %s", config->info[DRM_XE_QUERY_CONFIG_FLAGS] &
DRM_XE_QUERY_CONFIG_FLAG_HAS_VRAM ? "yes" : "no");
igt_assert(igt_debugfs_search(fd, "info", reference));
if (intel_gen(devid) < 20) {
switch (config->info[DRM_XE_QUERY_CONFIG_VA_BITS]) {
case 48:
val = 3;
break;
case 57:
val = 4;
break;
}
sprintf(reference, "vm_max_level %d", val);
igt_assert(igt_debugfs_search(fd, "info", reference));
}
snprintf(reference, sizeof(reference), "tile_count %d", xe_sysfs_get_num_tiles(fd));
igt_assert(igt_debugfs_search(fd, "info", reference));
igt_assert(igt_debugfs_exists(fd, "gt0", O_RDONLY));
igt_assert(igt_debugfs_exists(fd, "gtt_mm", O_RDONLY));
igt_debugfs_dump(fd, "gtt_mm");
if (config->info[DRM_XE_QUERY_CONFIG_FLAGS] & DRM_XE_QUERY_CONFIG_FLAG_HAS_VRAM) {
igt_assert(igt_debugfs_exists(fd, "vram0_mm", O_RDONLY));
igt_debugfs_dump(fd, "vram0_mm");
}
if (igt_debugfs_exists(fd, "stolen_mm", O_RDONLY))
igt_debugfs_dump(fd, "stolen_mm");
igt_assert(igt_debugfs_exists(fd, "clients", O_RDONLY));
igt_debugfs_dump(fd, "clients");
igt_assert(igt_debugfs_exists(fd, "gem_names", O_RDONLY));
igt_debugfs_dump(fd, "gem_names");
xe_validate_entries(igt_dir, expected_files,
ARRAY_SIZE(expected_files));
}
/**
* SUBTEST: xe-forcewake
* Description: Check forcewake debugfs devnode
*/
static void
xe_test_forcewake(int fd)
{
int handle = igt_debugfs_open(fd, "forcewake_all", O_WRONLY);
igt_assert_neq(handle, -1);
close(handle);
}
const char *help_str =
" -w\t--warn-not-hit Produce warnings if it founds a devfs node without tests";
struct option long_options[] = {
{ "--warn-not-hit", no_argument, NULL, 'w'},
{ 0, 0, 0, 0 }
};
static int opt_handler(int option, int option_index, void *input)
{
switch (option) {
case 'w':
opt.warn_on_not_hit = true;
break;
default:
return IGT_OPT_HANDLER_ERROR;
}
return IGT_OPT_HANDLER_SUCCESS;
}
igt_main_args("", long_options, help_str, opt_handler, NULL)
{
int debugfs = -1;
int fd = -1;
igt_dir_t *igt_dir = NULL;
igt_fixture {
fd = drm_open_driver_master(DRIVER_XE);
__igt_debugfs_dump(fd, "info", IGT_LOG_INFO);
debugfs = igt_debugfs_dir(fd);
igt_dir = igt_dir_create(debugfs);
igt_require(igt_dir);
kmstest_set_vt_graphics_mode();
}
igt_describe("Check if various debugfs devnodes exist and test reading them.");
igt_subtest("xe-base") {
xe_test_base(fd, xe_config(fd), igt_dir);
}
igt_describe("Check forcewake debugfs devnode");
igt_subtest("xe-forcewake") {
xe_test_forcewake(fd);
}
igt_fixture {
igt_dir_destroy(igt_dir);
close(debugfs);
drm_close_driver(fd);
}
}
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