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)
144 lines
3.0 KiB
C
144 lines
3.0 KiB
C
/*
|
|
* Copyright (C) 2011-2015 MediaTek Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
* See http://www.gnu.org/licenses/gpl-2.0.html for more details.
|
|
*/
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/types.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/slab.h>
|
|
#include <mt-plat/sync_write.h>
|
|
#include "sspm_define.h"
|
|
#include "sspm_excep.h"
|
|
#include "sspm_helper.h"
|
|
#include "sspm_sysfs.h"
|
|
|
|
#if SSPM_COREDUMP_SUPPORT
|
|
struct coredump_ctrl_s {
|
|
unsigned int base;
|
|
unsigned int size;
|
|
unsigned int db_ofs;
|
|
unsigned int db_size;
|
|
unsigned int buff_ofs;
|
|
unsigned int buff_size;
|
|
};
|
|
#endif
|
|
|
|
#if SSPM_COREDUMP_SUPPORT
|
|
struct coredump_ctrl_s *sspm_cd_ctl;
|
|
static unsigned int sspm_cd_exists;
|
|
#endif
|
|
|
|
#if SSPM_COREDUMP_SUPPORT
|
|
void sspm_log_coredump_recv(unsigned int exists)
|
|
{
|
|
sspm_cd_exists = exists;
|
|
}
|
|
|
|
static ssize_t sspm_aee_read(struct device *kobj, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned int ret;
|
|
|
|
if (!sspm_cd_exists)
|
|
return 0;
|
|
|
|
ret = sspm_cd_ctl->db_size;
|
|
|
|
memcpy_fromio(buf, ((unsigned char *) sspm_cd_ctl) +
|
|
sspm_cd_ctl->db_ofs, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
DEVICE_ATTR(sspm_aee, 0444, sspm_aee_read, NULL);
|
|
|
|
static ssize_t sspm_coredump_read(struct file *filep, struct kobject *kobj,
|
|
struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
|
|
{
|
|
if (!sspm_cd_exists)
|
|
return 0;
|
|
if (offset >= SSPM_COREDUMP_SIZE)
|
|
return 0;
|
|
if ((offset + size) >= SSPM_COREDUMP_SIZE)
|
|
size = SSPM_COREDUMP_SIZE - offset;
|
|
|
|
memcpy_fromio(buf, ((unsigned char *) sspm_cd_ctl) +
|
|
sspm_cd_ctl->buff_ofs + offset, size);
|
|
|
|
return size;
|
|
}
|
|
|
|
BIN_ATTR_RO(sspm_coredump, 0);
|
|
#endif
|
|
/*
|
|
* generate an exception according to exception type
|
|
* @param type: exception type
|
|
*/
|
|
void sspm_aed(enum sspm_excep_id type)
|
|
{
|
|
|
|
}
|
|
|
|
unsigned int __init sspm_coredump_init(phys_addr_t start, phys_addr_t limit)
|
|
{
|
|
#if SSPM_COREDUMP_SUPPORT
|
|
unsigned int last_ofs;
|
|
|
|
sspm_cd_ctl = (struct coredump_ctrl_s *) start;
|
|
sspm_cd_ctl->base = PLT_COREDUMP_READY; /* magic */
|
|
|
|
last_ofs = sizeof(*sspm_cd_ctl);
|
|
sspm_cd_ctl->size = last_ofs;
|
|
|
|
sspm_cd_ctl->db_ofs = last_ofs;
|
|
sspm_cd_ctl->db_size = SSPM_DB_SIZE;
|
|
last_ofs += sspm_cd_ctl->db_size;
|
|
|
|
sspm_cd_ctl->buff_ofs = last_ofs;
|
|
sspm_cd_ctl->buff_size = SSPM_COREDUMP_SIZE;
|
|
last_ofs += sspm_cd_ctl->buff_size;
|
|
|
|
return last_ofs;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
int __init sspm_coredump_init_done(void)
|
|
{
|
|
#if SSPM_COREDUMP_SUPPORT
|
|
int ret;
|
|
|
|
if (sspm_cd_ctl) {
|
|
ret = sspm_sysfs_create_file(&dev_attr_sspm_aee);
|
|
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
ret = sspm_sysfs_create_bin_file(&bin_attr_sspm_coredump);
|
|
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* init excep for sspm
|
|
* @return: 0 if success
|
|
*/
|
|
int __init sspm_excep_init(void)
|
|
{
|
|
return 0;
|
|
}
|