Add initial debugfs support. Provide below functionality:
- print buffer objects
- print latest boot mode
- trigger vpu engine reset
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@xxxxxxxxxxxxxxx>
---
drivers/accel/ivpu/Makefile | 1 +
drivers/accel/ivpu/ivpu_debugfs.c | 74 +++++++++++++++++++++++++++++++
drivers/accel/ivpu/ivpu_debugfs.h | 13 ++++++
drivers/accel/ivpu/ivpu_drv.c | 5 +++
4 files changed, 93 insertions(+)
create mode 100644 drivers/accel/ivpu/ivpu_debugfs.c
create mode 100644 drivers/accel/ivpu/ivpu_debugfs.h
diff --git a/drivers/accel/ivpu/Makefile b/drivers/accel/ivpu/Makefile
index 80f1fb3548ae..3ca2fb3936f6 100644
--- a/drivers/accel/ivpu/Makefile
+++ b/drivers/accel/ivpu/Makefile
@@ -2,6 +2,7 @@
# Copyright (C) 2023 Intel Corporation
intel_vpu-y := \
+ ivpu_debugfs.o \
ivpu_drv.o \
ivpu_fw.o \
ivpu_gem.o \
diff --git a/drivers/accel/ivpu/ivpu_debugfs.c b/drivers/accel/ivpu/ivpu_debugfs.c
new file mode 100644
index 000000000000..df51ec008fb5
--- /dev/null
+++ b/drivers/accel/ivpu/ivpu_debugfs.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2020-2023 Intel Corporation
+ */
+
+#include <drm/drm_debugfs.h>
+#include <drm/drm_file.h>
+#include <drm/drm_print.h>
+
+#include <uapi/drm/ivpu_accel.h>
+
+#include "ivpu_debugfs.h"
+#include "ivpu_drv.h"
+#include "ivpu_gem.h"
+#include "ivpu_jsm_msg.h"
+#include "ivpu_pm.h"
+
+static int bo_list_show(struct seq_file *s, void *v)
+{
+ struct drm_info_node *node = (struct drm_info_node *)s->private;
+ struct drm_printer p = drm_seq_file_printer(s);
+
+ ivpu_bo_list(node->minor->dev, &p);
+
+ return 0;
+}
+
+static int last_bootmode_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, "%s\n", (vdev->pm->is_warmboot) ? "warmboot" : "coldboot");
+
+ return 0;
+}
+
+static const struct drm_info_list vdev_debugfs_list[] = {
+ {"bo_list", bo_list_show, 0},
+ {"last_bootmode", last_bootmode_show, 0},
+};
+
+static ssize_t
+ivpu_reset_engine_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;
+
+ if (ivpu_jsm_reset_engine(vdev, DRM_IVPU_ENGINE_COMPUTE))
+ return -ENODEV;
+ if (ivpu_jsm_reset_engine(vdev, DRM_IVPU_ENGINE_COPY))
+ return -ENODEV;
+
+ return size;
+}
+
+static const struct file_operations ivpu_reset_engine_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = ivpu_reset_engine_fn,
+};
+
+void ivpu_debugfs_init(struct drm_minor *minor)
+{
+ struct ivpu_device *vdev = to_ivpu_device(minor->dev);
+
+ drm_debugfs_create_files(vdev_debugfs_list, ARRAY_SIZE(vdev_debugfs_list),
+ minor->debugfs_root, minor);
+
+ debugfs_create_file("reset_engine", 0200, minor->debugfs_root, vdev,
+ &ivpu_reset_engine_fops);
+}
diff --git a/drivers/accel/ivpu/ivpu_debugfs.h b/drivers/accel/ivpu/ivpu_debugfs.h
new file mode 100644
index 000000000000..78f80c1e00e4
--- /dev/null
+++ b/drivers/accel/ivpu/ivpu_debugfs.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2020-2023 Intel Corporation
+ */
+
+#ifndef __IVPU_DEBUGFS_H__
+#define __IVPU_DEBUGFS_H__
+
+struct drm_minor;
+
+void ivpu_debugfs_init(struct drm_minor *minor);
+
+#endif /* __IVPU_DEBUGFS_H__ */
diff --git a/drivers/accel/ivpu/ivpu_drv.c b/drivers/accel/ivpu/ivpu_drv.c
index 2df7643b843d..4c0345417c14 100644
--- a/drivers/accel/ivpu/ivpu_drv.c
+++ b/drivers/accel/ivpu/ivpu_drv.c
@@ -14,6 +14,7 @@
#include <drm/drm_prime.h>
#include "vpu_boot_api.h"
+#include "ivpu_debugfs.h"
#include "ivpu_drv.h"
#include "ivpu_fw.h"
#include "ivpu_gem.h"
@@ -378,6 +379,10 @@ static const struct drm_driver driver = {
.gem_prime_import = ivpu_gem_prime_import,
.gem_prime_mmap = drm_gem_prime_mmap,
+#if defined(CONFIG_DEBUG_FS)
+ .debugfs_init = ivpu_debugfs_init,
+#endif
+
.ioctls = ivpu_drm_ioctls,
.num_ioctls = ARRAY_SIZE(ivpu_drm_ioctls),
.fops = &ivpu_fops,
--
2.25.1
