threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
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* Copyright (c) 2015-2019, MICROTRUST Incorporated
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* Copyright (C) 2015 Google, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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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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#ifndef _TRUSTY_LOG_H_
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#define _TRUSTY_LOG_H_
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#include <imsg_log.h>
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#define TZ_LOG_SIZE (PAGE_SIZE * 64)
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#define TZ_LINE_BUFFER_SIZE 256
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#define TZ_LOG_RATELIMIT_INTERVAL (1 * HZ)
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#define TZ_LOG_RATELIMIT_BURST 200
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/*
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* Ring buffer that supports one secure producer thread and one
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* linux side consumer thread.
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*/
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struct log_rb {
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TZ_VOLATILE(uint32_t alloc);
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TZ_VOLATILE(uint32_t put);
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TZ_NON_VOLATILE(uint32_t sz);
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TZ_VOLATILE(char data[0]);
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} __packed;
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struct boot_log_rb {
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uint32_t get;
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uint32_t put;
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uint32_t sz;
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char data[0];
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} __packed;
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struct tz_log_state {
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struct device *dev;
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/*
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* This lock is here to ensure only one consumer will read
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* from the log ring buffer at a time.
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*/
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spinlock_t lock;
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struct log_rb *log;
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struct boot_log_rb *boot_log;
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uint32_t get;
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uint32_t read_get;
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struct page *log_pages;
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struct page *boot_log_pages;
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struct notifier_block call_notifier;
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struct notifier_block panic_notifier;
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char line_buffer[TZ_LINE_BUFFER_SIZE];
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};
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int tz_log_probe(struct platform_device *pdev);
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int tz_log_remove(struct platform_device *pdev);
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int tz_driver_read_logs(char *buffer, unsigned long count);
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#ifdef CONFIG_MICROTRUST_TZ_LOG
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int teei_log_fn(void *work);
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int init_tlog_comp_fn(void);
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void teei_notify_log_fn(void);
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#endif
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int teei_change_log_status(unsigned long new_status);
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#endif
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