108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2019 MediaTek Inc.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <asm/page.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/of.h>
|
||
|
|
#include <linux/of_irq.h>
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/compiler.h>
|
||
|
|
#include <linux/interrupt.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <emi.h>
|
||
|
|
#include <devmpu.h>
|
||
|
|
#include <devmpu_emi.h>
|
||
|
|
|
||
|
|
#define LOG_TAG "[DEVMPU_ACP]"
|
||
|
|
|
||
|
|
#ifdef pr_fmt
|
||
|
|
#undef pr_fmt
|
||
|
|
#endif
|
||
|
|
#define pr_fmt(fmt) LOG_TAG " " fmt
|
||
|
|
|
||
|
|
static irqreturn_t devmpu_irq_handler_emi(unsigned int emi_id,
|
||
|
|
struct reg_info_t *dump, unsigned int leng)
|
||
|
|
{
|
||
|
|
unsigned int i;
|
||
|
|
unsigned int mpus = 0, mput = 0, mput_2nd = 0;
|
||
|
|
unsigned long long vio_addr;
|
||
|
|
unsigned int master_id, domain_id;
|
||
|
|
unsigned int port_id;
|
||
|
|
unsigned int wr_vio, wr_oo_vio;
|
||
|
|
unsigned int hp_wr_vio;
|
||
|
|
|
||
|
|
for (i = 0; i < leng; i++) {
|
||
|
|
if (dump[i].offset == EMI_MPUS_OFFSET)
|
||
|
|
mpus = dump[i].value;
|
||
|
|
|
||
|
|
if (dump[i].offset == EMI_MPUT_OFFSET)
|
||
|
|
mput = dump[i].value;
|
||
|
|
|
||
|
|
if (dump[i].offset == EMI_MPUT_2ND_OFFSET)
|
||
|
|
mput_2nd = dump[i].value;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!mput && !mput_2nd) {
|
||
|
|
pr_err("%s:%d failed to get violation from emi\n",
|
||
|
|
__func__, __LINE__);
|
||
|
|
return IRQ_NONE;
|
||
|
|
}
|
||
|
|
|
||
|
|
vio_addr = ((((unsigned long long)(mput_2nd & 0xF)) << 32) + mput);
|
||
|
|
hp_wr_vio = (mput_2nd >> 21) & 0x3;
|
||
|
|
|
||
|
|
master_id = mpus & 0xFFFF;
|
||
|
|
domain_id = (mpus >> 21) & 0xF;
|
||
|
|
wr_vio = (mpus >> 29) & 0x3;
|
||
|
|
wr_oo_vio = (mpus >> 27) & 0x3;
|
||
|
|
port_id = master_id & 0x7;
|
||
|
|
|
||
|
|
#ifdef CONFIG_MTK_ENABLE_GENIEZONE
|
||
|
|
if ((wr_vio == 2) && (wr_oo_vio == 0) &&
|
||
|
|
((port_id == 0) || (port_id == 1)))
|
||
|
|
return IRQ_HANDLED;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* if is hyperviosr MPU violation, deliver to DevMPU */
|
||
|
|
if (hp_wr_vio) {
|
||
|
|
devmpu_print_violation(vio_addr, master_id, domain_id,
|
||
|
|
hp_wr_vio, true);
|
||
|
|
return IRQ_HANDLED;
|
||
|
|
}
|
||
|
|
|
||
|
|
return IRQ_NONE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void devmpu_vio_clear_emi(unsigned int emi_id)
|
||
|
|
{
|
||
|
|
devmpu_vio_clear(emi_id);
|
||
|
|
}
|
||
|
|
|
||
|
|
int devmpu_regist_emi(void)
|
||
|
|
{
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
ret = mtk_emimpu_prehandle_register(devmpu_irq_handler_emi);
|
||
|
|
if (ret) {
|
||
|
|
pr_err("%s:%d failed to register emi prehandle, %d\n",
|
||
|
|
__func__, __LINE__, ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = mtk_emimpu_postclear_register(devmpu_vio_clear_emi);
|
||
|
|
if (ret) {
|
||
|
|
pr_err("%s:%d failed to register emi postclear, %d\n",
|
||
|
|
__func__, __LINE__, ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("Mediatek Device MPU Driver with EMI");
|
||
|
|
MODULE_AUTHOR("Calvin Liao <calvin.liao@mediatek.com>");
|
||
|
|
MODULE_LICENSE("GPL");
|