path: root/drivers/platform/tegra/rtcpu/debug.c

/*
 * Copyright (c) 2016-2019, NVIDIA CORPORATION. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have eeceived a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "soc/tegra/camrtc-dbg-messages.h"
#include "soc/tegra/camrtc-commands.h"

#include <linux/debugfs.h>
#include <linux/io.h>
#include <linux/iommu.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/sched.h>
#include <linux/version.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
#include <linux/sched/signal.h>
#include <linux/sched/clock.h>
#endif
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/tegra-camera-rtcpu.h>
#include <linux/tegra-ivc.h>
#include <linux/tegra-ivc-bus.h>
#include <linux/platform/tegra/emc_bwmgr.h>
#include <linux/platform/tegra/tegra-mc-sid.h>

struct camrtc_debug {
	struct tegra_ivc_channel *channel;
	struct mutex mutex;
	struct dentry *root;
	wait_queue_head_t waitq;
	struct {
		u32 completion_timeout;
		u32 mods_loops;
		char *test_case;
		size_t test_case_size;
		u32 test_timeout;
		unsigned long test_bw;
	} parameters;
	struct camrtc_test_mem {
		u32 index;
		size_t used;
		size_t size;
		void *ptr;
		dma_addr_t iova;
	} mem[CAMRTC_DBG_NUM_MEM_TEST_MEM];
	struct device *mem_devices[3];
	struct camrtc_dbg_streamids streamids;
	struct ast_regset {
		struct debugfs_regset32 common, region[8];
	} ast_regsets[2];
};

#define NV(x) "nvidia," #x

/* Get a camera-rtcpu device */
static struct device *camrtc_get_device(struct tegra_ivc_channel *ch)
{
	if (unlikely(ch == NULL))
		return NULL;

	BUG_ON(ch->dev.parent == NULL);
	BUG_ON(ch->dev.parent->parent == NULL);

	return ch->dev.parent->parent;
}

#define INIT_OPEN_FOPS(_open) { \
	.open = _open, \
	.read = seq_read, \
	.llseek = seq_lseek, \
	.release = single_release \
}

#define DEFINE_SEQ_FOPS(_fops_, _show_) \
static int _fops_ ## _open(struct inode *inode, struct file *file) \
{ \
	return single_open(file, _show_, inode->i_private); \
} \
static const struct file_operations _fops_ = INIT_OPEN_FOPS(_fops_ ## _open)

static int camrtc_show_version(struct seq_file *file, void *data)
{
	struct tegra_ivc_channel *ch = file->private;
	struct device *rce_dev = camrtc_get_device(ch);
	char version[TEGRA_CAMRTC_VERSION_LEN];

	tegra_camrtc_print_version(rce_dev, version, sizeof(version));

	seq_puts(file, version);
	seq_puts(file, "\n");

	return 0;
}

DEFINE_SEQ_FOPS(camrtc_dbgfs_fops_version, camrtc_show_version);

static int camrtc_show_reboot(struct seq_file *file, void *data)
{
	struct tegra_ivc_channel *ch = file->private;
	struct device *rce_dev = camrtc_get_device(ch);
	int ret = 0;

	/* Make rtcpu online */
	ret = tegra_ivc_channel_runtime_get(ch);
	if (ret < 0)
		goto error;

	ret = tegra_camrtc_reboot(rce_dev);
	if (ret)
		goto error;

	seq_puts(file, "0\n");

error:
	tegra_ivc_channel_runtime_put(ch);
	return ret;
}

DEFINE_SEQ_FOPS(camrtc_dbgfs_fops_reboot, camrtc_show_reboot);

static void camrtc_debug_notify(struct tegra_ivc_channel *ch)
{
	struct camrtc_debug *crd = tegra_ivc_channel_get_drvdata(ch);

	wake_up_all(&crd->waitq);
}

static int camrtc_show_forced_reset_restore(struct seq_file *file, void *data)
{
	struct tegra_ivc_channel *ch = file->private;
	struct device *rce_dev = camrtc_get_device(ch);
	int ret = 0;

	/* Make rtcpu online */
	ret = tegra_ivc_channel_runtime_get(ch);
	if (ret < 0)
		goto error;

	ret = tegra_camrtc_restore(rce_dev);
	if (ret)
		goto error;

	seq_puts(file, "0\n");

error:
	tegra_ivc_channel_runtime_put(ch);
	return ret;
}

DEFINE_SEQ_FOPS(camrtc_dbgfs_fops_forced_reset_restore,
			camrtc_show_forced_reset_restore);

static int camrtc_ivc_dbg_full_frame_xact(
	struct tegra_ivc_channel <