Commit 8f7fb1e2 authored by Stanislaw Gruszka's avatar Stanislaw Gruszka
Browse files

accel/ivpu: Add debugfs files for testing device reset 



Add new debugfs files to validate device recovery functionality.

Signed-off-by: default avatarStanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: default avatarJacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230524074847.866711-4-stanislaw.gruszka@linux.intel.com
parent d4e4257a

drivers/accel/ivpu/ivpu_debugfs.c

+41 −0
Original line number Diff line number Diff line
@@ -77,11 +77,31 @@ static int last_bootmode_show(struct seq_file *s, void *v) 
	return 0;

}



static int reset_counter_show(struct seq_file *s, void *v)

{

	struct drm_info_node *node = (struct drm_info_node *)s->private;

	struct ivpu_device *vdev = to_ivpu_device(node->minor->dev);



	seq_printf(s, "%d\n", atomic_read(&vdev->pm->reset_counter));

	return 0;

}



static int reset_pending_show(struct seq_file *s, void *v)

{

	struct drm_info_node *node = (struct drm_info_node *)s->private;

	struct ivpu_device *vdev = to_ivpu_device(node->minor->dev);



	seq_printf(s, "%d\n", atomic_read(&vdev->pm->in_reset));

	return 0;

}



static const struct drm_info_list vdev_debugfs_list[] = {

	{"bo_list", bo_list_show, 0},

	{"fw_trace_capability", fw_trace_capability_show, 0},

	{"fw_trace_config", fw_trace_config_show, 0},

	{"last_bootmode", last_bootmode_show, 0},

	{"reset_counter", reset_counter_show, 0},

	{"reset_pending", reset_pending_show, 0},

};



static int fw_log_show(struct seq_file *s, void *v)
@@ -216,6 +236,24 @@ ivpu_reset_engine_fn(struct file *file, const char __user *user_buf, size_t size 
	return size;

}



static ssize_t

ivpu_force_recovery_fn(struct file *file, const char __user *user_buf, size_t size, loff_t *pos)

{

	struct ivpu_device *vdev = file->private_data;



	if (!size)

		return -EINVAL;



	ivpu_pm_schedule_recovery(vdev);

	return size;

}



static const struct file_operations ivpu_force_recovery_fops = {

	.owner = THIS_MODULE,

	.open = simple_open,

	.write = ivpu_force_recovery_fn,

};



static const struct file_operations ivpu_reset_engine_fops = {

	.owner = THIS_MODULE,

	.open = simple_open,
@@ -229,6 +267,9 @@ void ivpu_debugfs_init(struct drm_minor *minor) 
	drm_debugfs_create_files(vdev_debugfs_list, ARRAY_SIZE(vdev_debugfs_list),

				 minor->debugfs_root, minor);



	debugfs_create_file("force_recovery", 0200, minor->debugfs_root, vdev,

			    &ivpu_force_recovery_fops);



	debugfs_create_file("fw_log", 0644, minor->debugfs_root, vdev,

			    &fw_log_fops);

	debugfs_create_file("fw_trace_destination_mask", 0200, minor->debugfs_root, vdev,

drivers/accel/ivpu/ivpu_pm.c

+1 −0
Original line number Diff line number Diff line
@@ -259,6 +259,7 @@ void ivpu_pm_reset_prepare_cb(struct pci_dev *pdev) 
	pm_runtime_get_sync(vdev->drm.dev);



	ivpu_dbg(vdev, PM, "Pre-reset..\n");

	atomic_inc(&vdev->pm->reset_counter);

	atomic_set(&vdev->pm->in_reset, 1);

	ivpu_shutdown(vdev);

	ivpu_pm_prepare_cold_boot(vdev);

drivers/accel/ivpu/ivpu_pm.h

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ struct ivpu_pm_info { 
	struct ivpu_device *vdev;

	struct work_struct recovery_work;

	atomic_t in_reset;

	atomic_t reset_counter;

	bool is_warmboot;

	u32 suspend_reschedule_counter;

};