203 lines
6.0 KiB
C
203 lines
6.0 KiB
C
/*
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*********************************************************************************************************
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* AR100 SYSTEM
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* AR100 Software System Develop Kits
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* interrupt module
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*
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* (c) Copyright 2012-2016, Sunny China
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* All Rights Reserved
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*
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* File : intc.c
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* By : Sunny
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* Version : v1.0
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* Date : 2012-5-3
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* Descript: interrupt controller module.
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* Update : date auther ver notes
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* 2012-5-3 13:25:40 Sunny 1.0 Create this file.
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*********************************************************************************************************
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*/
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#include "intc_i.h"
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#include "platform-intc.h"
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struct intc_regs *pintc_regs;
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/*
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*********************************************************************************************************
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* INTERRUPT INIT
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*
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* Description: initialize interrupt.
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*
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* Arguments : none.
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*
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* Returns : OK if initialize succeeded, others if failed.
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*
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* Note :
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*********************************************************************************************************
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*/
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s32 intc_init(void)
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{
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pintc_regs = (struct intc_regs *)(SUNXI_R_INTC_PBASE);
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/*initialize interrupt controller */
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pintc_regs->enable = 0x0;
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pintc_regs->mask = 0x0;
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pintc_regs->pending = 0xffffffff;
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pintc_regs->enable1 = 0x0;
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pintc_regs->mask1 = 0x0;
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pintc_regs->pending1 = 0xffffffff;
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pintc_regs->enable2 = 0x0;
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pintc_regs->mask2 = 0x0;
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pintc_regs->pending2 = 0xffffffff;
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return OK;
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}
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/*
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*********************************************************************************************************
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* INTERRUPT EXIT
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*
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* Description: exit interrupt.
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*
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* Arguments : none.
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*
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* Returns : OK if exit succeeded, others if failed.
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*
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* Note :
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*********************************************************************************************************
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*/
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s32 intc_exit(void)
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{
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pintc_regs = NULL;
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return OK;
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}
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/*
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*********************************************************************************************************
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* ENABLE INTERRUPT
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*
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* Description: enable a specific interrupt.
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*
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* Arguments : intno : the source number of interrupt to which we want to enable.
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*
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* Returns : OK if enable interrupt succeeded, others if failed.
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*
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* Note :
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*********************************************************************************************************
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*/
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s32 intc_enable_interrupt(u32 intno)
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{
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/*intno can't beyond then IRQ_SOURCE_MAX */
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/* ASSERT(intno < IRQ_SOUCE_MAX); */
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/*
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* NMI interrupt should clear before enable.
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* by sunny at 2012-6-12 19:30:22.
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*/
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if (intno == SUNXI_RINTC_IRQ_NMI) {
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pintc_regs->pending = (1 << intno);
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}
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/*enable interrupt which number is intno */
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if (intno <= 31)
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pintc_regs->enable |= (1 << intno);
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else if (intno > 31 && intno <= 63)
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pintc_regs->enable1 |= (1 << (intno - 32));
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else
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pintc_regs->enable2 |= (1 << (intno - 64));
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return OK;
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}
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/*
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*********************************************************************************************************
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* DISABLE INTERRUPT
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*
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* Description: disable a specific interrupt.
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*
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* Arguments : intno : the source number of interrupt which we want to disable.
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*
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* Returns : OK if disable interrupt succeeded, others if failed.
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*
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* Note :
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*********************************************************************************************************
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*/
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s32 intc_disable_interrupt(u32 intno)
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{
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/*intno can't beyond then IRQ_SOURCE_MAX */
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/* ASSERT(intno < IRQ_SOUCE_MAX); */
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/*enable interrupt which number is intno */
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if (intno <= 31)
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pintc_regs->enable &= ~(1 << intno);
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else if (intno > 31 && intno <= 63)
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pintc_regs->enable1 &= ~(1 << (intno - 32));
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else
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pintc_regs->enable2 &= ~(1 << (intno - 64));
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return OK;
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}
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/*
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*********************************************************************************************************
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* GET CURRENT INTERRUPT
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*
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* Description: get the source number of current interrupt.
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*
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* Arguments : none.
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*
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* Returns : the source number of current interrupt.
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*
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* Note :
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*********************************************************************************************************
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*/
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u32 intc_get_current_interrupt(void)
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{
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volatile u32 interrupt;
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interrupt = (u32) ((pintc_regs->vector) >> 2);
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return interrupt;
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}
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s32 intc_set_mask(u32 intno, u32 mask)
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{
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/* intno can't beyond then IRQ_SOURCE_MAX */
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/* ASSERT(intno < IRQ_SOUCE_MAX); */
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/* enable interrupt which number is intno */
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if (intno <= 31) {
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pintc_regs->mask &= ~(1 << intno);
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pintc_regs->mask |= (mask << intno);
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} else if (intno > 31 && intno <= 63) {
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pintc_regs->mask1 &= ~(1 << (intno - 32));
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pintc_regs->mask1 |= (mask << intno);
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} else {
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pintc_regs->mask2 &= ~(1 << (intno - 64));
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pintc_regs->mask2 |= (mask << intno);
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}
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return OK;
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}
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s32 intc_set_group_config(u32 grp_irq_num, u32 mask)
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{
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if (grp_irq_num <= 31) {
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pintc_regs->group_config0 &= ~(1 << grp_irq_num);
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pintc_regs->group_config0 |= (mask << grp_irq_num);
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} else if (grp_irq_num > 31 && grp_irq_num <= 63) {
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pintc_regs->group_config1 &= ~(1 << (grp_irq_num - 32));
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pintc_regs->group_config1 |= (mask << grp_irq_num);
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} else if (grp_irq_num > 63 && grp_irq_num <= 95) {
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pintc_regs->group_config2 &= ~(1 << (grp_irq_num - 64));
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pintc_regs->group_config2 |= (mask << grp_irq_num);
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} else {
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pintc_regs->group_config3 &= ~(1 << (grp_irq_num - 64));
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pintc_regs->group_config3 |= (mask << grp_irq_num);
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}
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return OK;
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}
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