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// SPDX-License-Identifier: MIT
/*
* Copyright © 2022 Intel Corporation
*/
#include "xe_debugfs.h"
#include <linux/debugfs.h>
#include <linux/fault-inject.h>
#include <linux/string_helpers.h>
#include <drm/drm_debugfs.h>
#include "xe_bo.h"
#include "xe_device.h"
#include "xe_force_wake.h"
#include "xe_gt_debugfs.h"
#include "xe_gt_printk.h"
#include "xe_guc_ads.h"
#include "xe_pm.h"
#include "xe_sriov.h"
#include "xe_step.h"
#ifdef CONFIG_DRM_XE_DEBUG
#include "xe_bo_evict.h"
#include "xe_migrate.h"
#include "xe_vm.h"
#endif
DECLARE_FAULT_ATTR(gt_reset_failure);
static struct xe_device *node_to_xe(struct drm_info_node *node)
{
return to_xe_device(node->minor->dev);
}
static int info(struct seq_file *m, void *data)
{
struct xe_device *xe = node_to_xe(m->private);
struct drm_printer p = drm_seq_file_printer(m);
struct xe_gt *gt;
u8 id;
xe_pm_runtime_get(xe);
drm_printf(&p, "graphics_verx100 %d\n", xe->info.graphics_verx100);
drm_printf(&p, "media_verx100 %d\n", xe->info.media_verx100);
drm_printf(&p, "stepping G:%s M:%s B:%s\n",
xe_step_name(xe->info.step.graphics),
xe_step_name(xe->info.step.media),
xe_step_name(xe->info.step.basedie));
drm_printf(&p, "is_dgfx %s\n", str_yes_no(xe->info.is_dgfx));
drm_printf(&p, "platform %d\n", xe->info.platform);
drm_printf(&p, "subplatform %d\n",
xe->info.subplatform > XE_SUBPLATFORM_NONE ? xe->info.subplatform : 0);
drm_printf(&p, "devid 0x%x\n", xe->info.devid);
drm_printf(&p, "revid %d\n", xe->info.revid);
drm_printf(&p, "tile_count %d\n", xe->info.tile_count);
drm_printf(&p, "vm_max_level %d\n", xe->info.vm_max_level);
drm_printf(&p, "force_execlist %s\n", str_yes_no(xe->info.force_execlist));
drm_printf(&p, "has_flat_ccs %s\n", str_yes_no(xe->info.has_flat_ccs));
drm_printf(&p, "has_usm %s\n", str_yes_no(xe->info.has_usm));
drm_printf(&p, "skip_guc_pc %s\n", str_yes_no(xe->info.skip_guc_pc));
for_each_gt(gt, xe, id) {
drm_printf(&p, "gt%d force wake %d\n", id,
xe_force_wake_ref(gt_to_fw(gt), XE_FW_GT));
drm_printf(&p, "gt%d engine_mask 0x%llx\n", id,
gt->info.engine_mask);
}
xe_pm_runtime_put(xe);
return 0;
}
static int sriov_info(struct seq_file *m, void *data)
{
struct xe_device *xe = node_to_xe(m->private);
struct drm_printer p = drm_seq_file_printer(m);
xe_sriov_print_info(xe, &p);
return 0;
}
static const struct drm_info_list debugfs_list[] = {
{"info", info, 0},
{ .name = "sriov_info", .show = sriov_info, },
};
static int forcewake_open(struct inode *inode, struct file *file)
{
struct xe_device *xe = inode->i_private;
struct xe_gt *gt;
u8 id;
xe_pm_runtime_get(xe);
for_each_gt(gt, xe, id)
XE_WARN_ON(xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL));
return 0;
}
static int forcewake_release(struct inode *inode, struct file *file)
{
struct xe_device *xe = inode->i_private;
struct xe_gt *gt;
u8 id;
for_each_gt(gt, xe, id)
XE_WARN_ON(xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL));
xe_pm_runtime_put(xe);
return 0;
}
static const struct file_operations forcewake_all_fops = {
.owner = THIS_MODULE,
.open = forcewake_open,
.release = forcewake_release,
};
static ssize_t wedged_mode_show(struct file *f, char __user *ubuf,
size_t size, loff_t *pos)
{
struct xe_device *xe = file_inode(f)->i_private;
char buf[32];
int len = 0;
len = scnprintf(buf, sizeof(buf), "%d\n", xe->wedged.mode);
return simple_read_from_buffer(ubuf, size, pos, buf, len);
}
static ssize_t wedged_mode_set(struct file *f, const char __user *ubuf,
size_t size, loff_t *pos)
{
struct xe_device *xe = file_inode(f)->i_private;
struct xe_gt *gt;
u32 wedged_mode;
ssize_t ret;
u8 id;
ret = kstrtouint_from_user(ubuf, size, 0, &wedged_mode);
if (ret)
return ret;
if (wedged_mode > 2)
return -EINVAL;
if (xe->wedged.mode == wedged_mode)
return 0;
xe->wedged.mode = wedged_mode;
xe_pm_runtime_get(xe);
for_each_gt(gt, xe, id) {
ret = xe_guc_ads_scheduler_policy_toggle_reset(>->uc.guc.ads);
if (ret) {
xe_gt_err(gt, "Failed to update GuC ADS scheduler policy. GuC may still cause engine reset even with wedged_mode=2\n");
return -EIO;
}
}
xe_pm_runtime_put(xe);
return size;
}
static const struct file_operations wedged_mode_fops = {
.owner = THIS_MODULE,
.read = wedged_mode_show,
.write = wedged_mode_set,
};
void xe_debugfs_register(struct xe_device *xe)
{
struct ttm_device *bdev = &xe->ttm;
struct drm_minor *minor = xe->drm.primary;
struct dentry *root = minor->debugfs_root;
struct ttm_resource_manager *man;
struct xe_gt *gt;
u32 mem_type;
u8 id;
drm_debugfs_create_files(debugfs_list,
ARRAY_SIZE(debugfs_list),
root, minor);
debugfs_create_file("forcewake_all", 0400, root, xe,
&forcewake_all_fops);
debugfs_create_file("wedged_mode", 0600, root, xe,
&wedged_mode_fops);
for (mem_type = XE_PL_VRAM0; mem_type <= XE_PL_VRAM1; ++mem_type) {
man = ttm_manager_type(bdev, mem_type);
if (man) {
char name[16];
snprintf(name, sizeof(name), "vram%d_mm", mem_type - XE_PL_VRAM0);
ttm_resource_manager_create_debugfs(man, root, name);
}
}
man = ttm_manager_type(bdev, XE_PL_TT);
ttm_resource_manager_create_debugfs(man, root, "gtt_mm");
man = ttm_manager_type(bdev, XE_PL_STOLEN);
if (man)
ttm_resource_manager_create_debugfs(man, root, "stolen_mm");
for_each_gt(gt, xe, id)
xe_gt_debugfs_register(gt);
fault_create_debugfs_attr("fail_gt_reset", root, >_reset_failure);
}
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