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accel/ivpu: Add debugfs files for testing device reset

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Add new debugfs files to validate device recovery functionality.

Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230524074847.866711-4-stanislaw.gruszka@linux.intel.com
This commit is contained in:
Stanislaw Gruszka 2023-05-24 09:48:45 +02:00
parent d4e4257afa
commit 8f7fb1e21e
3 changed files with 43 additions and 0 deletions
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41
drivers/accel/ivpu/ivpu_debugfs.c
View file

@ -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,

1
drivers/accel/ivpu/ivpu_pm.c
View file

@ -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);

1
drivers/accel/ivpu/ivpu_pm.h
View file

@ -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;
};