599 lines
14 KiB
C
599 lines
14 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2019 MediaTek Inc.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/kallsyms.h>
|
||
|
|
#include <linux/interrupt.h>
|
||
|
|
#include <linux/delay.h>
|
||
|
|
#include <linux/sched.h>
|
||
|
|
#include <linux/of_address.h>
|
||
|
|
#include <linux/of_irq.h>
|
||
|
|
#include <linux/signal.h>
|
||
|
|
#include <linux/cpu.h>
|
||
|
|
#include "systracker_v2.h"
|
||
|
|
|
||
|
|
void __iomem *BUS_DBG_BASE;
|
||
|
|
void __iomem *BUS_DBG_INFRA_BASE;
|
||
|
|
struct systracker_config_t track_config;
|
||
|
|
struct systracker_entry_t track_entry;
|
||
|
|
|
||
|
|
static const struct of_device_id systracker_of_ids[] = {
|
||
|
|
{ .compatible = "mediatek,bus_dbg-v2", },
|
||
|
|
{}
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct mt_systracker_driver mt_systracker_drv = {
|
||
|
|
.driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "systracker",
|
||
|
|
.bus = &platform_bus_type,
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.of_match_table = systracker_of_ids,
|
||
|
|
},
|
||
|
|
.probe = systracker_probe,
|
||
|
|
.remove = systracker_remove,
|
||
|
|
.suspend = systracker_suspend,
|
||
|
|
.resume = systracker_resume,
|
||
|
|
},
|
||
|
|
.device = {
|
||
|
|
.name = "systracker",
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static int systracker_probe(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
void __iomem *infra_ao_base;
|
||
|
|
unsigned int bus_dbg_con_offset;
|
||
|
|
|
||
|
|
pr_notice("systracker probe\n");
|
||
|
|
|
||
|
|
/* iomap register */
|
||
|
|
BUS_DBG_BASE = of_iomap(pdev->dev.of_node, 0);
|
||
|
|
if (!BUS_DBG_BASE) {
|
||
|
|
pr_notice("can't of_iomap for systracker!!\n");
|
||
|
|
return -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
pr_notice("of_iomap for systracker @ 0x%p\n", BUS_DBG_BASE);
|
||
|
|
|
||
|
|
infra_ao_base = of_iomap(pdev->dev.of_node, 1);
|
||
|
|
if (!infra_ao_base) {
|
||
|
|
pr_notice("[systracker] bus_dbg_con is in infra\n");
|
||
|
|
BUS_DBG_INFRA_BASE = BUS_DBG_BASE;
|
||
|
|
} else {
|
||
|
|
pr_notice("[systracker] bus_dbg_con is in infra_ao\n");
|
||
|
|
if (of_property_read_u32
|
||
|
|
(pdev->dev.of_node, "mediatek,bus_dbg_con_offset",
|
||
|
|
&bus_dbg_con_offset)) {
|
||
|
|
pr_notice
|
||
|
|
("[systracker] cannot get bus_dbg_con_offset\n");
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
BUS_DBG_INFRA_BASE = infra_ao_base + bus_dbg_con_offset;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* save entry info */
|
||
|
|
save_entry();
|
||
|
|
memset(&track_config, 0, sizeof(struct systracker_config_t));
|
||
|
|
|
||
|
|
track_config.enable_timeout = 1;
|
||
|
|
track_config.enable_slave_err = 1;
|
||
|
|
track_config.enable_irq = 0;
|
||
|
|
track_config.timeout_ms = 100;
|
||
|
|
track_config.timeout2_ms = 2000;
|
||
|
|
|
||
|
|
systracker_reset();
|
||
|
|
systracker_enable();
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int systracker_remove(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int systracker_suspend(struct platform_device *pdev, pm_message_t state)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int systracker_resume_default(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
if (track_config.state || track_config.enable_wp)
|
||
|
|
systracker_enable();
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int systracker_resume(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
return systracker_resume_default(pdev);
|
||
|
|
}
|
||
|
|
|
||
|
|
void save_entry(void)
|
||
|
|
{
|
||
|
|
int i = 0;
|
||
|
|
|
||
|
|
track_entry.dbg_con = readl(BUS_DBG_CON);
|
||
|
|
track_entry.dbg_con_infra = readl(BUS_DBG_CON_INFRA);
|
||
|
|
|
||
|
|
for (i = 0; i < BUS_DBG_NUM_TRACKER; i++) {
|
||
|
|
track_entry.ar_track_l[i] =
|
||
|
|
readl(BUS_DBG_AR_TRACK_L(i));
|
||
|
|
track_entry.ar_track_h[i] =
|
||
|
|
readl(BUS_DBG_AR_TRACK_H(i));
|
||
|
|
track_entry.ar_trans_tid[i] =
|
||
|
|
readl(BUS_DBG_AR_TRANS_TID(i));
|
||
|
|
track_entry.aw_track_l[i] =
|
||
|
|
readl(BUS_DBG_AW_TRACK_L(i));
|
||
|
|
track_entry.aw_track_h[i] =
|
||
|
|
readl(BUS_DBG_AW_TRACK_H(i));
|
||
|
|
track_entry.aw_trans_tid[i] =
|
||
|
|
readl(BUS_DBG_AW_TRANS_TID(i));
|
||
|
|
}
|
||
|
|
|
||
|
|
track_entry.w_track_data6 = readl(BUS_DBG_W_TRACK_DATA6);
|
||
|
|
track_entry.w_track_data7 = readl(BUS_DBG_W_TRACK_DATA7);
|
||
|
|
track_entry.w_track_data_valid =
|
||
|
|
readl(BUS_DBG_W_TRACK_DATA_VALID);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int systracker_watchpoint_enable_default(void)
|
||
|
|
{
|
||
|
|
unsigned int con;
|
||
|
|
|
||
|
|
track_config.enable_wp = 1;
|
||
|
|
|
||
|
|
writel(track_config.wp_phy_address, BUS_DBG_WP);
|
||
|
|
writel(0x00000000, BUS_DBG_WP_MASK);
|
||
|
|
|
||
|
|
con = readl(BUS_DBG_CON_INFRA) | BUS_DBG_CON_WP_EN;
|
||
|
|
writel(con, BUS_DBG_CON_INFRA);
|
||
|
|
/* ensure access complete */
|
||
|
|
mb();
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int systracker_watchpoint_enable(void)
|
||
|
|
{
|
||
|
|
return systracker_watchpoint_enable_default();
|
||
|
|
}
|
||
|
|
|
||
|
|
static int systracker_watchpoint_disable_default(void)
|
||
|
|
{
|
||
|
|
track_config.enable_wp = 0;
|
||
|
|
writel(readl(BUS_DBG_CON_INFRA) & (~BUS_DBG_CON_WP_EN),
|
||
|
|
BUS_DBG_CON_INFRA);
|
||
|
|
/* ensure access complete */
|
||
|
|
mb();
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int systracker_watchpoint_disable(void)
|
||
|
|
{
|
||
|
|
return systracker_watchpoint_disable_default();
|
||
|
|
}
|
||
|
|
|
||
|
|
void systracker_reset_default(void)
|
||
|
|
{
|
||
|
|
writel(readl(BUS_DBG_CON) |
|
||
|
|
BUS_DBG_CON_SW_RST, BUS_DBG_CON);
|
||
|
|
writel(readl(BUS_DBG_CON) |
|
||
|
|
BUS_DBG_CON_IRQ_CLR, BUS_DBG_CON);
|
||
|
|
writel(readl(BUS_DBG_CON) |
|
||
|
|
BUS_DBG_CON_TIMEOUT_CLR, BUS_DBG_CON);
|
||
|
|
/* ensure access complete */
|
||
|
|
mb();
|
||
|
|
}
|
||
|
|
|
||
|
|
void systracker_reset(void)
|
||
|
|
{
|
||
|
|
systracker_reset_default();
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned int systracker_timeout_value_default(void)
|
||
|
|
{
|
||
|
|
/* prescale = (133 * (10 ^ 6)) / 16 = 8312500/s */
|
||
|
|
return (BUS_DBG_BUS_MHZ * 1000 / 16) * track_config.timeout_ms;
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned int systracker_timeout2_value_default(void)
|
||
|
|
{
|
||
|
|
/* prescale = (133 * (10 ^ 6)) / 16 = 8312500/s */
|
||
|
|
return (BUS_DBG_BUS_MHZ * 1000 / 16) * track_config.timeout2_ms;
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned int systracker_timeout_value(void)
|
||
|
|
{
|
||
|
|
return systracker_timeout_value_default();
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned int systracker_timeout2_value(void)
|
||
|
|
{
|
||
|
|
return systracker_timeout2_value_default();
|
||
|
|
}
|
||
|
|
|
||
|
|
void systracker_enable_default(void)
|
||
|
|
{
|
||
|
|
unsigned int con;
|
||
|
|
unsigned int timer_control_value;
|
||
|
|
|
||
|
|
timer_control_value = systracker_timeout_value();
|
||
|
|
#ifndef CONFIG_FPGA_EARLY_PORTING
|
||
|
|
writel(timer_control_value, BUS_DBG_TIMER_CON0);
|
||
|
|
#else
|
||
|
|
writel(BUS_DBG_MAX_TIMEOUT_VAL, BUS_DBG_TIMER_CON0);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
timer_control_value = systracker_timeout2_value();
|
||
|
|
#ifndef CONFIG_FPGA_EARLY_PORTING
|
||
|
|
writel(timer_control_value, BUS_DBG_TIMER_CON1);
|
||
|
|
#else
|
||
|
|
writel(BUS_DBG_MAX_TIMEOUT_VAL, BUS_DBG_TIMER_CON1);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
track_config.state = 1;
|
||
|
|
con = BUS_DBG_CON_BUS_DBG_EN | BUS_DBG_CON_BUS_OT_EN;
|
||
|
|
if (track_config.enable_timeout)
|
||
|
|
con |= BUS_DBG_CON_TIMEOUT_EN;
|
||
|
|
|
||
|
|
if (track_config.enable_slave_err)
|
||
|
|
con |= BUS_DBG_CON_SLV_ERR_EN;
|
||
|
|
|
||
|
|
if (track_config.enable_irq) {
|
||
|
|
con |= BUS_DBG_CON_IRQ_EN;
|
||
|
|
con &= ~BUS_DBG_CON_IRQ_WP_EN;
|
||
|
|
}
|
||
|
|
|
||
|
|
con |= BUS_DBG_CON_HALT_ON_EN;
|
||
|
|
writel(con, BUS_DBG_CON_INFRA);
|
||
|
|
/* ensure access complete */
|
||
|
|
mb();
|
||
|
|
}
|
||
|
|
|
||
|
|
void systracker_enable(void)
|
||
|
|
{
|
||
|
|
systracker_enable_default();
|
||
|
|
}
|
||
|
|
|
||
|
|
void enable_systracker(void)
|
||
|
|
{
|
||
|
|
systracker_enable();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void systracker_disable_default(void)
|
||
|
|
{
|
||
|
|
track_config.state = 0;
|
||
|
|
writel(readl(BUS_DBG_CON_INFRA) &
|
||
|
|
~BUS_DBG_CON_BUS_DBG_EN, BUS_DBG_CON_INFRA);
|
||
|
|
/* ensure access complete */
|
||
|
|
mb();
|
||
|
|
}
|
||
|
|
|
||
|
|
void systracker_disable(void)
|
||
|
|
{
|
||
|
|
systracker_disable_default();
|
||
|
|
}
|
||
|
|
|
||
|
|
int systracker_test_init(void)
|
||
|
|
{
|
||
|
|
if (mt_systracker_drv.systracker_test_init)
|
||
|
|
return mt_systracker_drv.systracker_test_init();
|
||
|
|
|
||
|
|
pr_notice("mt_systracker_drv.%s is NULL", __func__);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
int tracker_dump(char *buf)
|
||
|
|
{
|
||
|
|
|
||
|
|
char *ptr = buf;
|
||
|
|
unsigned int reg_value;
|
||
|
|
int i;
|
||
|
|
unsigned int entry_valid;
|
||
|
|
unsigned int entry_secure;
|
||
|
|
unsigned int entry_tid;
|
||
|
|
unsigned int entry_id;
|
||
|
|
unsigned int entry_address;
|
||
|
|
unsigned int entry_data_size;
|
||
|
|
unsigned int entry_burst_length;
|
||
|
|
|
||
|
|
{
|
||
|
|
/* Get tracker info and save to buf */
|
||
|
|
|
||
|
|
/* BUS_DBG_AR_TRACK_L(__n)
|
||
|
|
* [31:0] ARADDR: DBG read tracker entry read address
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* BUS_DBG_AR_TRACK_H(__n)
|
||
|
|
* [21] Valid:DBG read tracker entry valid
|
||
|
|
* [20:8] ARID:DBG read tracker entry read ID
|
||
|
|
* [6:4] ARSIZE:DBG read tracker entry read data size
|
||
|
|
* [3:0] ARLEN: DBG read tracker entry read burst length
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* BUS_DBG_AR_TRACK_TID(__n)
|
||
|
|
* [2:0] BUS_DBG_AR_TRANS0_ENTRY_ID:
|
||
|
|
* DBG read tracker entry ID of 1st transaction
|
||
|
|
*/
|
||
|
|
|
||
|
|
ptr += sprintf(ptr,
|
||
|
|
"[TRACKER] BUS_DBG_CON = (0x%x, 0x%x), T0= 0x%x, T1 = 0x%x\n",
|
||
|
|
track_entry.dbg_con,
|
||
|
|
readl(BUS_DBG_CON),
|
||
|
|
readl(BUS_DBG_TIMER_CON0),
|
||
|
|
readl(BUS_DBG_TIMER_CON1));
|
||
|
|
|
||
|
|
ptr += sprintf(ptr, "BUS_DBG_CON_INFRA = (0x%x, 0x%x)\n",
|
||
|
|
track_entry.dbg_con_infra,
|
||
|
|
readl(BUS_DBG_CON_INFRA));
|
||
|
|
|
||
|
|
for (i = 0; i < BUS_DBG_NUM_TRACKER; i++) {
|
||
|
|
entry_address = track_entry.ar_track_l[i];
|
||
|
|
reg_value = track_entry.ar_track_h[i];
|
||
|
|
entry_valid =
|
||
|
|
extract_n2mbits(reg_value, 22, 22);
|
||
|
|
entry_secure =
|
||
|
|
extract_n2mbits(reg_value, 21, 21);
|
||
|
|
entry_id =
|
||
|
|
extract_n2mbits(reg_value, 8, 20);
|
||
|
|
entry_data_size =
|
||
|
|
extract_n2mbits(reg_value, 4, 6);
|
||
|
|
entry_burst_length =
|
||
|
|
extract_n2mbits(reg_value, 0, 3);
|
||
|
|
entry_tid = track_entry.ar_trans_tid[i];
|
||
|
|
|
||
|
|
ptr += sprintf(ptr,
|
||
|
|
"read entry = %d, valid = 0x%x, secure = 0x%x,",
|
||
|
|
i, entry_valid, entry_secure);
|
||
|
|
ptr += sprintf(ptr,
|
||
|
|
"read id = 0x%x, address = 0x%x, data_size = 0x%x,",
|
||
|
|
entry_id, entry_address, entry_data_size);
|
||
|
|
ptr += sprintf(ptr, "burst_length = 0x%x\n",
|
||
|
|
entry_burst_length);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* BUS_DBG_AW_TRACK_L(__n)
|
||
|
|
* [31:0] AWADDR: DBG write tracker entry write address
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* BUS_DBG_AW_TRACK_H(__n)
|
||
|
|
* [21] Valid:DBG write tracker entry valid
|
||
|
|
* [20:8] ARID:DBG write tracker entry write ID
|
||
|
|
* [6:4] ARSIZE:DBG write tracker entry write data size
|
||
|
|
* [3:0] ARLEN: DBG write tracker entry write burst length
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* BUS_DBG_AW_TRACK_TID(__n)
|
||
|
|
* [2:0] BUS_DBG_AW_TRANS0_ENTRY_ID:
|
||
|
|
* DBG write tracker entry ID of 1st transaction
|
||
|
|
*/
|
||
|
|
|
||
|
|
for (i = 0; i < BUS_DBG_NUM_TRACKER; i++) {
|
||
|
|
entry_address = track_entry.aw_track_l[i];
|
||
|
|
reg_value = track_entry.aw_track_h[i];
|
||
|
|
entry_valid =
|
||
|
|
extract_n2mbits(reg_value, 22, 22);
|
||
|
|
entry_secure =
|
||
|
|
extract_n2mbits(reg_value, 21, 21);
|
||
|
|
entry_id =
|
||
|
|
extract_n2mbits(reg_value, 8, 20);
|
||
|
|
entry_data_size =
|
||
|
|
extract_n2mbits(reg_value, 4, 6);
|
||
|
|
entry_burst_length =
|
||
|
|
extract_n2mbits(reg_value, 0, 3);
|
||
|
|
entry_tid = track_entry.aw_trans_tid[i];
|
||
|
|
|
||
|
|
ptr += sprintf(ptr,
|
||
|
|
"write entry = %d, valid = 0x%x, secure = 0x%x,",
|
||
|
|
i, entry_valid, entry_secure);
|
||
|
|
ptr += sprintf(ptr,
|
||
|
|
"read id = 0x%x, address = 0x%x, data_size = 0x%x, ",
|
||
|
|
entry_id, entry_address, entry_data_size);
|
||
|
|
ptr += sprintf(ptr,
|
||
|
|
"burst_length = 0x%x\n",
|
||
|
|
entry_burst_length);
|
||
|
|
}
|
||
|
|
|
||
|
|
ptr += sprintf(ptr,
|
||
|
|
"write entry ~ 6, valid = 0x%x, data = 0x%x\n",
|
||
|
|
((track_entry.w_track_data_valid&(0x1<<6))>>6),
|
||
|
|
track_entry.w_track_data6);
|
||
|
|
ptr += sprintf(ptr,
|
||
|
|
"write entry ~ 7, valid = 0x%x, data = 0x%x\n",
|
||
|
|
((track_entry.w_track_data_valid&(0x1<<7))>>7),
|
||
|
|
track_entry.w_track_data7);
|
||
|
|
|
||
|
|
return strlen(buf);
|
||
|
|
}
|
||
|
|
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t tracker_run_show(struct device_driver *driver, char *buf)
|
||
|
|
{
|
||
|
|
return snprintf(buf, PAGE_SIZE,
|
||
|
|
"BUS_DBG_CON=0x%x, BUS_DBG_CON_INFRA=0x%x\n",
|
||
|
|
readl(BUS_DBG_CON),
|
||
|
|
readl(BUS_DBG_CON_INFRA));
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t tracker_run_store(struct device_driver *driver,
|
||
|
|
const char *buf, size_t count)
|
||
|
|
{
|
||
|
|
unsigned int value;
|
||
|
|
|
||
|
|
if (kstrtou32(buf, 10, &value))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
if (value == 1)
|
||
|
|
systracker_enable();
|
||
|
|
else if (value == 0)
|
||
|
|
systracker_disable();
|
||
|
|
else
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
DRIVER_ATTR_RW(tracker_run);
|
||
|
|
|
||
|
|
static ssize_t enable_wp_show(struct device_driver *driver, char *buf)
|
||
|
|
{
|
||
|
|
return snprintf(buf, PAGE_SIZE, "%x\n", track_config.enable_wp);
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t enable_wp_store(struct device_driver *driver,
|
||
|
|
const char *buf, size_t count)
|
||
|
|
{
|
||
|
|
unsigned int value;
|
||
|
|
|
||
|
|
if (kstrtou32(buf, 10, &value))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
if (value == 1)
|
||
|
|
systracker_watchpoint_enable();
|
||
|
|
else if (value == 0)
|
||
|
|
systracker_watchpoint_disable();
|
||
|
|
else
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
static DRIVER_ATTR_RW(enable_wp);
|
||
|
|
|
||
|
|
static ssize_t set_wp_address_show(struct device_driver *driver, char *buf)
|
||
|
|
{
|
||
|
|
return snprintf(buf, PAGE_SIZE, "%x\n", track_config.wp_phy_address);
|
||
|
|
}
|
||
|
|
|
||
|
|
int systracker_set_watchpoint_addr(unsigned int addr)
|
||
|
|
{
|
||
|
|
if (mt_systracker_drv.set_watchpoint_address)
|
||
|
|
return mt_systracker_drv.set_watchpoint_address(addr);
|
||
|
|
|
||
|
|
track_config.wp_phy_address = addr;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t set_wp_address_store
|
||
|
|
(struct device_driver *driver, const char *buf, size_t count)
|
||
|
|
{
|
||
|
|
unsigned int value;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = kstrtou32(buf, 16, &value);
|
||
|
|
pr_debug("watch address:0x%x, ret = %d\n", value, ret);
|
||
|
|
systracker_set_watchpoint_addr(value);
|
||
|
|
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
static DRIVER_ATTR_RW(set_wp_address);
|
||
|
|
|
||
|
|
static ssize_t tracker_entry_dump_show
|
||
|
|
(struct device_driver *driver, char *buf)
|
||
|
|
{
|
||
|
|
int ret = tracker_dump(buf);
|
||
|
|
|
||
|
|
if (ret == -1)
|
||
|
|
pr_notice("Dump error in %s, %d\n", __func__, __LINE__);
|
||
|
|
|
||
|
|
return strlen(buf);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static ssize_t tracker_swtrst_show(struct device_driver *driver, char *buf)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t tracker_swtrst_store
|
||
|
|
(struct device_driver *driver, const char *buf, size_t count)
|
||
|
|
{
|
||
|
|
writel(readl(BUS_DBG_CON) |
|
||
|
|
BUS_DBG_CON_SW_RST, BUS_DBG_CON);
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
static DRIVER_ATTR_RW(tracker_swtrst);
|
||
|
|
|
||
|
|
static ssize_t tracker_entry_dump_store
|
||
|
|
(struct device_driver *driver, const char *buf, size_t count)
|
||
|
|
{
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
static DRIVER_ATTR_RW(tracker_entry_dump);
|
||
|
|
|
||
|
|
static ssize_t tracker_last_status_show
|
||
|
|
(struct device_driver *driver, char *buf)
|
||
|
|
{
|
||
|
|
|
||
|
|
if (track_entry.dbg_con & BUS_DBG_CON_TIMEOUT)
|
||
|
|
return snprintf(buf, PAGE_SIZE, "1\n");
|
||
|
|
else
|
||
|
|
return snprintf(buf, PAGE_SIZE, "0\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t tracker_last_status_store
|
||
|
|
(struct device_driver *driver, const char *buf, size_t count)
|
||
|
|
{
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
static DRIVER_ATTR_RW(tracker_last_status);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* driver initialization entry point
|
||
|
|
*/
|
||
|
|
static int __init systracker_init(void)
|
||
|
|
{
|
||
|
|
int err = 0;
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
err = platform_driver_register(&mt_systracker_drv.driver);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
/* Create sysfs entry */
|
||
|
|
ret = driver_create_file(&mt_systracker_drv.driver.driver,
|
||
|
|
&driver_attr_tracker_entry_dump);
|
||
|
|
ret |= driver_create_file(&mt_systracker_drv.driver.driver,
|
||
|
|
&driver_attr_tracker_run);
|
||
|
|
ret |= driver_create_file(&mt_systracker_drv.driver.driver,
|
||
|
|
&driver_attr_enable_wp);
|
||
|
|
ret |= driver_create_file(&mt_systracker_drv.driver.driver,
|
||
|
|
&driver_attr_set_wp_address);
|
||
|
|
ret |= driver_create_file(&mt_systracker_drv.driver.driver,
|
||
|
|
&driver_attr_tracker_swtrst);
|
||
|
|
ret |= driver_create_file(&mt_systracker_drv.driver.driver,
|
||
|
|
&driver_attr_tracker_last_status);
|
||
|
|
if (ret)
|
||
|
|
pr_notice("Fail to create systracker_drv sysfs files");
|
||
|
|
|
||
|
|
pr_debug("systracker init done\n");
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* driver exit point
|
||
|
|
*/
|
||
|
|
static void __exit systracker_exit(void)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
arch_initcall_sync(systracker_init);
|
||
|
|
module_exit(systracker_exit);
|