irq.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:3k
- /*
- * linux/arch/arm/mach-clps711x/irq.c
- *
- * Copyright (C) 2000 Deep Blue Solutions Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- #include <linux/init.h>
- #include <asm/mach/irq.h>
- #include <asm/hardware.h>
- #include <asm/io.h>
- #include <asm/irq.h>
- #include <asm/hardware/clps7111.h>
- static void mask_irq_int1(unsigned int irq)
- {
- u32 intmr1;
- intmr1 = clps_readl(INTMR1);
- intmr1 &= ~(1 << irq);
- clps_writel(intmr1, INTMR1);
- }
- static void mask_ack_irq_int1(unsigned int irq)
- {
- u32 intmr1;
- intmr1 = clps_readl(INTMR1);
- intmr1 &= ~(1 << irq);
- clps_writel(intmr1, INTMR1);
- switch (irq) {
- case IRQ_CSINT: clps_writel(0, COEOI); break;
- case IRQ_TC1OI: clps_writel(0, TC1EOI); break;
- case IRQ_TC2OI: clps_writel(0, TC2EOI); break;
- case IRQ_RTCMI: clps_writel(0, RTCEOI); break;
- case IRQ_TINT: clps_writel(0, TEOI); break;
- case IRQ_UMSINT: clps_writel(0, UMSEOI); break;
- }
- }
- static void unmask_irq_int1(unsigned int irq)
- {
- u32 intmr1;
- intmr1 = clps_readl(INTMR1);
- intmr1 |= 1 << irq;
- clps_writel(intmr1, INTMR1);
- }
- static void mask_irq_int2(unsigned int irq)
- {
- u32 intmr2;
- intmr2 = clps_readl(INTMR2);
- intmr2 &= ~(1 << (irq - 16));
- clps_writel(intmr2, INTMR2);
- }
- static void mask_ack_irq_int2(unsigned int irq)
- {
- u32 intmr2;
- intmr2 = clps_readl(INTMR2);
- intmr2 &= ~(1 << (irq - 16));
- clps_writel(intmr2, INTMR2);
- switch (irq) {
- case IRQ_KBDINT: clps_writel(0, KBDEOI); break;
- }
- }
- static void unmask_irq_int2(unsigned int irq)
- {
- u32 intmr2;
- intmr2 = clps_readl(INTMR2);
- intmr2 |= 1 << (irq - 16);
- clps_writel(intmr2, INTMR2);
- }
- void __init clps711x_init_irq(void)
- {
- unsigned int i;
- for (i = 0; i < NR_IRQS; i++) {
- if (INT1_IRQS & (1 << i)) {
- irq_desc[i].valid = 1;
- irq_desc[i].probe_ok = 1;
- irq_desc[i].mask_ack = (INT1_ACK_IRQS & (1 << i)) ?
- mask_ack_irq_int1 :
- mask_irq_int1;
- irq_desc[i].mask = mask_irq_int1;
- irq_desc[i].unmask = unmask_irq_int1;
- }
- if (INT2_IRQS & (1 << i)) {
- irq_desc[i].valid = 1;
- irq_desc[i].probe_ok = 1;
- irq_desc[i].mask_ack = (INT2_ACK_IRQS & (1 << i)) ?
- mask_ack_irq_int2 :
- mask_irq_int2;
- irq_desc[i].mask = mask_irq_int2;
- irq_desc[i].unmask = unmask_irq_int2;
- }
- }
- /*
- * Disable interrupts
- */
- clps_writel(0, INTMR1);
- clps_writel(0, INTMR2);
- /*
- * Clear down any pending interrupts
- */
- clps_writel(0, COEOI);
- clps_writel(0, TC1EOI);
- clps_writel(0, TC2EOI);
- clps_writel(0, RTCEOI);
- clps_writel(0, TEOI);
- clps_writel(0, UMSEOI);
- clps_writel(0, SYNCIO);
- clps_writel(0, KBDEOI);
- }