82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
|
// SPDX-License-Identifier: MIT
|
||
|
/*
|
||
|
* Copyright © 2021 Intel Corporation
|
||
|
*/
|
||
|
|
||
|
#include <linux/debugfs.h>
|
||
|
#include <linux/string_helpers.h>
|
||
|
|
||
|
#include <drm/drm_print.h>
|
||
|
|
||
|
#include "gt/intel_gt_debugfs.h"
|
||
|
#include "i915_drv.h"
|
||
|
#include "intel_pxp.h"
|
||
|
#include "intel_pxp_debugfs.h"
|
||
|
#include "intel_pxp_irq.h"
|
||
|
|
||
|
static int pxp_info_show(struct seq_file *m, void *data)
|
||
|
{
|
||
|
struct intel_pxp *pxp = m->private;
|
||
|
struct drm_printer p = drm_seq_file_printer(m);
|
||
|
bool enabled = intel_pxp_is_enabled(pxp);
|
||
|
|
||
|
if (!enabled) {
|
||
|
drm_printf(&p, "pxp disabled\n");
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
drm_printf(&p, "active: %s\n", str_yes_no(intel_pxp_is_active(pxp)));
|
||
|
drm_printf(&p, "instance counter: %u\n", pxp->key_instance);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(pxp_info);
|
||
|
|
||
|
static int pxp_terminate_get(void *data, u64 *val)
|
||
|
{
|
||
|
/* nothing to read */
|
||
|
return -EPERM;
|
||
|
}
|
||
|
|
||
|
static int pxp_terminate_set(void *data, u64 val)
|
||
|
{
|
||
|
struct intel_pxp *pxp = data;
|
||
|
struct intel_gt *gt = pxp_to_gt(pxp);
|
||
|
|
||
|
if (!intel_pxp_is_active(pxp))
|
||
|
return -ENODEV;
|
||
|
|
||
|
/* simulate a termination interrupt */
|
||
|
spin_lock_irq(gt->irq_lock);
|
||
|
intel_pxp_irq_handler(pxp, GEN12_DISPLAY_PXP_STATE_TERMINATED_INTERRUPT);
|
||
|
spin_unlock_irq(gt->irq_lock);
|
||
|
|
||
|
if (!wait_for_completion_timeout(&pxp->termination,
|
||
|
msecs_to_jiffies(100)))
|
||
|
return -ETIMEDOUT;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
DEFINE_SIMPLE_ATTRIBUTE(pxp_terminate_fops, pxp_terminate_get, pxp_terminate_set, "%llx\n");
|
||
|
void intel_pxp_debugfs_register(struct intel_pxp *pxp, struct dentry *gt_root)
|
||
|
{
|
||
|
static const struct intel_gt_debugfs_file files[] = {
|
||
|
{ "info", &pxp_info_fops, NULL },
|
||
|
{ "terminate_state", &pxp_terminate_fops, NULL },
|
||
|
};
|
||
|
struct dentry *root;
|
||
|
|
||
|
if (!gt_root)
|
||
|
return;
|
||
|
|
||
|
if (!HAS_PXP((pxp_to_gt(pxp)->i915)))
|
||
|
return;
|
||
|
|
||
|
root = debugfs_create_dir("pxp", gt_root);
|
||
|
if (IS_ERR(root))
|
||
|
return;
|
||
|
|
||
|
intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), pxp);
|
||
|
}
|