98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// adsp_irq.c-- Mediatek ADSP IRQ handling
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//
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// Copyright (c) 2018 MediaTek Inc.
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#include <linux/spinlock.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <mt-plat/aee.h>
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#include <linux/interrupt.h>
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#include <mt-plat/sync_write.h>
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#include "adsp_ipi.h"
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#include "adsp_helper.h"
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#include "adsp_excep.h"
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#include "adsp_dvfs.h"
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/*
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* handler for wdt irq for adsp
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* dump adsp register
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*/
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#define DRV_Reg32(addr) readl(addr)
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#define DRV_WriteReg32(addr, val) writel(val, addr)
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#define DRV_SetReg32(addr, val) DRV_WriteReg32(addr, DRV_Reg32(addr) | (val))
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#define DRV_ClrReg32(addr, val) DRV_WriteReg32(addr, DRV_Reg32(addr) & ~(val))
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#ifdef CFG_RECOVERY_SUPPORT
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#define ADSP_WDT_TIMEOUT (60 * HZ) /* 60 seconds*/
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static struct timer_list adsp_wdt_timer;
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unsigned int wdt_counter;
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#endif
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irqreturn_t adsp_A_wdt_handler(int irq, void *dev_id)
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{
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/* disable wdt */
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DRV_ClrReg32(ADSP_A_WDT_REG, WDT_EN_BIT);
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#ifdef CFG_RECOVERY_SUPPORT
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if (!wdt_counter && !timer_pending(&adsp_wdt_timer))
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mod_timer(&adsp_wdt_timer, jiffies + ADSP_WDT_TIMEOUT);
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/* recovery failed reboot*/
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if (wdt_counter > WDT_LAST_WAIT_COUNT)
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WARN_ON(1);
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if (adsp_set_reset_status() == ADSP_RESET_STATUS_STOP) {
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wdt_counter++;
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pr_info("[ADSP] WDT exception (%u)\n", wdt_counter);
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adsp_send_reset_wq(ADSP_RESET_TYPE_WDT, ADSP_A_ID);
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} else
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pr_notice("[ADSP] resetting (%u)\n", wdt_counter);
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#else
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adsp_aed_reset(EXCEP_RUNTIME, ADSP_A_ID);
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#endif
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/* clear spm wakeup src */
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writel(0x0, ADSP_TO_SPM_REG);
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return IRQ_HANDLED;
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}
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#ifdef CFG_RECOVERY_SUPPORT
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static void adsp_wdt_counter_reset(struct timer_list *t)
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{
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del_timer(&adsp_wdt_timer);
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wdt_counter = 0;
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pr_info("[ADSP] %s\n", __func__);
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}
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#endif
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/*
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* dispatch adsp irq
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* reset adsp and generate exception if needed
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* @param irq: irq id
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* @param dev_id: should be NULL
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*/
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irqreturn_t adsp_A_irq_handler(int irq, void *dev_id)
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{
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adsp_A_ipi_handler();
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/* write 1 clear */
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writel(ADSP_IRQ_ADSP2HOST, ADSP_A_TO_HOST_REG);
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dsb(SY);
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return IRQ_HANDLED;
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}
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/*
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* adsp irq initialize
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*/
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void adsp_A_irq_init(void)
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{
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writel(ADSP_IRQ_ADSP2HOST, ADSP_A_TO_HOST_REG); /* clear adsp irq */
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#ifdef CFG_RECOVERY_SUPPORT
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timer_setup(&adsp_wdt_timer, adsp_wdt_counter_reset, 0);
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#endif
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}
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