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/* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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 the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/kallsyms.h>
#include <linux/slab.h>
#include <linux/kmemleak.h>
#include <linux/async.h>
#include <linux/thread_info.h>
#include <soc/qcom/memory_dump.h>
#include <soc/qcom/minidump.h>
#include <asm/sections.h>
#define MISC_DUMP_DATA_LEN 4096
#define PMIC_DUMP_DATA_LEN (64 * 1024)
#define VSENSE_DUMP_DATA_LEN 4096
#define RPM_DUMP_DATA_LEN (160 * 1024)
void register_misc_dump(void)
{
void *misc_buf;
int ret;
struct msm_dump_entry dump_entry;
struct msm_dump_data *misc_data;
if (MSM_DUMP_MAJOR(msm_dump_table_version()) > 1) {
misc_data = kzalloc(sizeof(struct msm_dump_data), GFP_KERNEL);
if (!misc_data)
return;
misc_buf = kzalloc(MISC_DUMP_DATA_LEN, GFP_KERNEL);
if (!misc_buf)
goto err0;
strlcpy(misc_data->name, "KMISC", sizeof(misc_data->name));
misc_data->addr = virt_to_phys(misc_buf);
misc_data->len = MISC_DUMP_DATA_LEN;
dump_entry.id = MSM_DUMP_DATA_MISC;
dump_entry.addr = virt_to_phys(misc_data);
ret = msm_dump_data_register(MSM_DUMP_TABLE_APPS, &dump_entry);
if (ret)
goto err1;
return;
err1:
kfree(misc_buf);
err0:
kfree(misc_data);
}
}
static void register_pmic_dump(void)
{
static void *dump_addr;
int ret;
struct msm_dump_entry dump_entry;
struct msm_dump_data *dump_data;
if (MSM_DUMP_MAJOR(msm_dump_table_version()) > 1) {
dump_data = kzalloc(sizeof(struct msm_dump_data), GFP_KERNEL);
if (!dump_data) {
pr_err("dump data structure allocation failed\n");
return;
}
dump_addr = kzalloc(PMIC_DUMP_DATA_LEN, GFP_KERNEL);
if (!dump_addr)
goto err0;
strlcpy(dump_data->name, "KPMIC", sizeof(dump_data->name));
dump_data->addr = virt_to_phys(dump_addr);
dump_data->len = PMIC_DUMP_DATA_LEN;
dump_entry.id = MSM_DUMP_DATA_PMIC;
dump_entry.addr = virt_to_phys(dump_data);
ret = msm_dump_data_register(MSM_DUMP_TABLE_APPS, &dump_entry);
if (ret) {
pr_err("Registering pmic dump region failed\n");
goto err1;
}
return;
err1:
kfree(dump_addr);
err0:
kfree(dump_data);
}
}
static void register_vsense_dump(void)
{
static void *dump_addr;
int ret;
struct msm_dump_entry dump_entry;
struct msm_dump_data *dump_data;
if (MSM_DUMP_MAJOR(msm_dump_table_version()) > 1) {
dump_data = kzalloc(sizeof(struct msm_dump_data), GFP_KERNEL);
if (!dump_data) {
pr_err("dump data structure allocation failed for vsense data\n");
return;
}
dump_addr = kzalloc(VSENSE_DUMP_DATA_LEN, GFP_KERNEL);
if (!dump_addr)
goto err0;
strlcpy(dump_data->name, "KVSENSE",
sizeof(dump_data->name));
dump_data->addr = virt_to_phys(dump_addr);
dump_data->len = VSENSE_DUMP_DATA_LEN;
dump_entry.id = MSM_DUMP_DATA_VSENSE;
dump_entry.addr = virt_to_phys(dump_data);
ret = msm_dump_data_register(MSM_DUMP_TABLE_APPS, &dump_entry);
if (ret) {
pr_err("Registering vsense dump region failed\n");
goto err1;
}
return;
err1:
kfree(dump_addr);
err0:
kfree(dump_data);
}
}
void register_rpm_dump(void)
{
static void *dump_addr;
int ret;
struct msm_dump_entry dump_entry;
struct msm_dump_data *dump_data;
if (MSM_DUMP_MAJOR(msm_dump_table_version()) > 1) {
dump_data = kzalloc(sizeof(struct msm_dump_data), GFP_KERNEL);
if (!dump_data)
return;
dump_addr = kzalloc(RPM_DUMP_DATA_LEN, GFP_KERNEL);
if (!dump_addr)
goto err0;
strlcpy(dump_data->name, "KRPM", sizeof(dump_data->name));
dump_data->addr = virt_to_phys(dump_addr);
dump_data->len = RPM_DUMP_DATA_LEN;
dump_entry.id = MSM_DUMP_DATA_RPM;
dump_entry.addr = virt_to_phys(dump_data);
ret = msm_dump_data_register(MSM_DUMP_TABLE_APPS, &dump_entry);
if (ret) {
pr_err("Registering rpm dump region failed\n");
goto err1;
}
return;
err1:
kfree(dump_addr);
err0:
kfree(dump_data);
}
}
static void __init common_log_register_log_buf(void)
{
char **log_bufp;
uint32_t *log_buf_lenp;
uint32_t *fist_idxp;
struct msm_client_dump dump_log_buf, dump_first_idx;
struct msm_dump_entry entry_log_buf, entry_first_idx;
struct msm_dump_data *dump_data;
log_bufp = (char **)kallsyms_lookup_name("log_buf");
log_buf_lenp = (uint32_t *)kallsyms_lookup_name("log_buf_len");
if (!log_bufp || !log_buf_lenp) {
pr_err("Unable to find log_buf by kallsyms!\n");
return;
}
fist_idxp = (uint32_t *)kallsyms_lookup_name("log_first_idx");
if (MSM_DUMP_MAJOR(msm_dump_table_version()) == 1) {
dump_log_buf.id = MSM_LOG_BUF;
dump_log_buf.start_addr = virt_to_phys(*log_bufp);
dump_log_buf.end_addr = virt_to_phys(*log_bufp + *log_buf_lenp);
if (msm_dump_tbl_register(&dump_log_buf))
pr_err("Unable to register %d.\n", dump_log_buf.id);
dump_first_idx.id = MSM_LOG_BUF_FIRST_IDX;
if (fist_idxp) {
dump_first_idx.start_addr = virt_to_phys(fist_idxp);
if (msm_dump_tbl_register(&dump_first_idx))
pr_err("Unable to register %d.\n",
dump_first_idx.id);
}
} else {
dump_data = kzalloc(sizeof(struct msm_dump_data),
GFP_KERNEL);
if (!dump_data)
return;
dump_data->len = *log_buf_lenp;
dump_data->addr = virt_to_phys(*log_bufp);
entry_log_buf.id = MSM_DUMP_DATA_LOG_BUF;
entry_log_buf.addr = virt_to_phys(dump_data);
if (msm_dump_data_register(MSM_DUMP_TABLE_APPS,
&entry_log_buf)) {
kfree(dump_data);
pr_err("Unable to register %d.\n", entry_log_buf.id);
} else
kmemleak_not_leak(dump_data);
if (fist_idxp) {
dump_data = kzalloc(sizeof(struct msm_dump_data),
GFP_KERNEL);
if (!dump_data)
return;
dump_data->addr = virt_to_phys(fist_idxp);
entry_first_idx.id = MSM_DUMP_DATA_LOG_BUF_FIRST_IDX;
entry_first_idx.addr = virt_to_phys(dump_data);
if (msm_dump_data_register(MSM_DUMP_TABLE_APPS,
&entry_first_idx)) {
kfree(dump_data);
pr_err("Unable to register %d.\n",
entry_first_idx.id);
} else
kmemleak_not_leak(dump_data);
}
}
}
static void __init register_kernel_sections(void)
{
struct md_region ksec_entry;
char *data_name = "KDATABSS";
const size_t static_size = __per_cpu_end - __per_cpu_start;
void __percpu *base = (void __percpu *)__per_cpu_start;
unsigned int cpu;
strlcpy(ksec_entry.name, data_name, sizeof(ksec_entry.name));
ksec_entry.virt_addr = (uintptr_t)_sdata;
ksec_entry.phys_addr = virt_to_phys(_sdata);
ksec_entry.size = roundup((__bss_stop - _sdata), 4);
if (msm_minidump_add_region(&ksec_entry))
pr_err("Failed to add data section in Minidump\n");
/* Add percpu static sections */
for_each_possible_cpu(cpu) {
void *start = per_cpu_ptr(base, cpu);
memset(&ksec_entry, 0, sizeof(ksec_entry));
scnprintf(ksec_entry.name, sizeof(ksec_entry.name),
"KSPERCPU%d", cpu);
ksec_entry.virt_addr = (uintptr_t)start;
ksec_entry.phys_addr = per_cpu_ptr_to_phys(start);
ksec_entry.size = static_size;
if (msm_minidump_add_region(&ksec_entry))
pr_err("Failed to add percpu sections in Minidump\n");
}
}
#ifdef CONFIG_QCOM_MINIDUMP
void dump_stack_minidump(u64 sp)
{
struct md_region ksp_entry, ktsk_entry;
u32 cpu = smp_processor_id();
if (sp < KIMAGE_VADDR || sp > -256UL)
sp = current_stack_pointer;
sp &= ~(THREAD_SIZE - 1);
scnprintf(ksp_entry.name, sizeof(ksp_entry.name), "KSTACK%d", cpu);
ksp_entry.virt_addr = sp;
ksp_entry.phys_addr = virt_to_phys((uintptr_t *)sp);
ksp_entry.size = THREAD_SIZE;
if (msm_minidump_add_region(&ksp_entry))
pr_err("Failed to add stack of cpu %d in Minidump\n", cpu);
scnprintf(ktsk_entry.name, sizeof(ktsk_entry.name), "KTASK%d", cpu);
ktsk_entry.virt_addr = (u64)current;
ktsk_entry.phys_addr = virt_to_phys((uintptr_t *)current);
ktsk_entry.size = sizeof(struct task_struct);
if (msm_minidump_add_region(&ktsk_entry))
pr_err("Failed to add current task %d in Minidump\n", cpu);
}
#endif
static void __init async_common_log_init(void *data, async_cookie_t cookie)
{
register_kernel_sections();
common_log_register_log_buf();
register_misc_dump();
register_pmic_dump();
register_vsense_dump();
register_rpm_dump();
}
static int __init msm_common_log_init(void)
{
/* Initialize asynchronously to reduce boot time */
async_schedule(async_common_log_init, NULL);
return 0;
}
late_initcall(msm_common_log_init);
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