126 lines
3 KiB
C
126 lines
3 KiB
C
/*
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* Copyright (C) 2018, Samsung Electronics Co. Ltd. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include "../sensorhub/shub_device.h"
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#include "../comm/shub_iio.h"
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#include "../sensormanager/shub_sensor_type.h"
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#include "../utility/shub_utility.h"
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#include "../vendor/shub_vendor.h"
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#include <linux/fs.h>
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#include <linux/io.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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#define SENSORHUB_DUMP_NOTI_EVENT 0xFC
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char *sensorhub_dump;
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int sensorhub_dump_size;
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static ssize_t shub_dump_read(struct file *file, struct kobject *kobj, struct bin_attribute *battr, char *buf,
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loff_t off, size_t size)
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{
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memcpy_fromio(buf, battr->private + off, size);
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return size;
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}
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BIN_ATTR_RO(shub_dump, 0);
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struct bin_attribute *shub_dump_bin_attrs[] = {
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&bin_attr_shub_dump,
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};
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static int create_dump_bin_file(void)
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{
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int ret;
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uint64_t i;
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struct shub_data_t *data = get_shub_data();
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shub_infof();
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sensorhub_dump = kvzalloc(sensorhub_dump_size, GFP_KERNEL);
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if (ZERO_OR_NULL_PTR(sensorhub_dump)) {
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shub_infof("fail to alloc memory");
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return -EINVAL;
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}
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shub_infof("dump size %d", sensorhub_dump_size);
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bin_attr_shub_dump.size = sensorhub_dump_size;
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bin_attr_shub_dump.private = sensorhub_dump;
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for (i = 0; i < ARRAY_SIZE(shub_dump_bin_attrs); i++) {
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struct bin_attribute *battr = shub_dump_bin_attrs[i];
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ret = device_create_bin_file(data->sysfs_dev, battr);
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if (ret < 0) {
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shub_errf("Failed to create file: %s %d", battr->attr.name, ret);
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break;
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}
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}
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if (ret < 0) {
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kvfree(sensorhub_dump);
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sensorhub_dump = NULL;
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sensorhub_dump_size = 0;
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}
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return ret;
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}
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void write_shub_dump_file(char *dump, int dumpsize, int type, int count)
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{
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char buffer[3];
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if (!dump) {
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shub_errf("dump is NULL");
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return;
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} else if (dumpsize != sensorhub_dump_size) {
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shub_errf("dump size is wrong %d(%d)", dumpsize, sensorhub_dump_size);
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return;
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}
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memcpy_fromio(sensorhub_dump, dump, sensorhub_dump_size);
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shub_infof("%d %d", type, count);
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buffer[0] = SENSORHUB_DUMP_NOTI_EVENT;
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buffer[1] = type;
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buffer[2] = count;
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shub_report_sensordata(SENSOR_TYPE_SENSORHUB, get_current_timestamp(), buffer, sizeof(buffer));
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}
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void initialize_shub_dump(void)
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{
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shub_infof();
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sensorhub_dump_size = sensorhub_get_dump_size();
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create_dump_bin_file();
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}
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void remove_shub_dump(void)
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{
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uint64_t i;
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struct shub_data_t *data = get_shub_data();
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if (ZERO_OR_NULL_PTR(sensorhub_dump))
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return;
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kvfree(sensorhub_dump);
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for (i = 0; i < ARRAY_SIZE(shub_dump_bin_attrs); i++)
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device_remove_bin_file(data->sysfs_dev, shub_dump_bin_attrs[i]);
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}
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