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// SPDX-License-Identifier: MIT
/*
* Copyright © 2019 Intel Corporation
*/
#include <linux/debugfs.h>
#include "i915_drv.h"
#include "intel_gt.h"
#include "intel_gt_debugfs.h"
#include "intel_gt_engines_debugfs.h"
#include "intel_gt_mcr.h"
#include "intel_gt_pm_debugfs.h"
#include "intel_sseu_debugfs.h"
#include "pxp/intel_pxp_debugfs.h"
#include "uc/intel_uc_debugfs.h"
int intel_gt_debugfs_reset_show(struct intel_gt *gt, u64 *val)
{
int ret = intel_gt_terminally_wedged(gt);
switch (ret) {
case -EIO:
*val = 1;
return 0;
case 0:
*val = 0;
return 0;
default:
return ret;
}
}
void intel_gt_debugfs_reset_store(struct intel_gt *gt, u64 val)
{
/* Flush any previous reset before applying for a new one */
wait_event(gt->reset.queue,
!test_bit(I915_RESET_BACKOFF, >->reset.flags));
intel_gt_handle_error(gt, val, I915_ERROR_CAPTURE,
"Manually reset engine mask to %llx", val);
}
/*
* keep the interface clean where the first parameter
* is a 'struct intel_gt *' instead of 'void *'
*/
static int __intel_gt_debugfs_reset_show(void *data, u64 *val)
{
return intel_gt_debugfs_reset_show(data, val);
}
static int __intel_gt_debugfs_reset_store(void *data, u64 val)
{
intel_gt_debugfs_reset_store(data, val);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(reset_fops, __intel_gt_debugfs_reset_show,
__intel_gt_debugfs_reset_store, "%llu\n");
static int steering_show(struct seq_file *m, void *data)
{
struct drm_printer p = drm_seq_file_printer(m);
struct intel_gt *gt = m->private;
intel_gt_mcr_report_steering(&p, gt, true);
return 0;
}
DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(steering);
static void gt_debugfs_register(struct intel_gt *gt, struct dentry *root)
{
static const struct intel_gt_debugfs_file files[] = {
{ "reset", &reset_fops, NULL },
{ "steering", &steering_fops },
};
intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), gt);
}
void intel_gt_debugfs_register(struct intel_gt *gt)
{
struct dentry *root;
if (!gt->i915->drm.primary->debugfs_root)
return;
root = debugfs_create_dir("gt", gt->i915->drm.primary->debugfs_root);
if (IS_ERR(root))
return;
gt_debugfs_register(gt, root);
intel_gt_engines_debugfs_register(gt, root);
intel_gt_pm_debugfs_register(gt, root);
intel_sseu_debugfs_register(gt, root);
intel_uc_debugfs_register(>->uc, root);
intel_pxp_debugfs_register(>->pxp, root);
}
void intel_gt_debugfs_register_files(struct dentry *root,
const struct intel_gt_debugfs_file *files,
unsigned long count, void *data)
{
while (count--) {
umode_t mode = files->fops->write ? 0644 : 0444;
if (!files->eval || files->eval(data))
debugfs_create_file(files->name,
mode, root, data,
files->fops);
files++;
}
}
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