/* * * Copyright (C) 1999 ARM Limited * * 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 <linux/stddef.h> #include <linux/list.h> #include <linux/timer.h> #include <linux/version.h> #include <linux/io.h> #include <mach/hardware.h> #include <asm/irq.h> #include <asm/mach/irq.h> #include <mach/csp/intcHw_reg.h> #include <mach/csp/mm_io.h> static void bcmring_mask_irq0(unsigned int irq) { writel(1 << (irq - IRQ_INTC0_START), MM_IO_BASE_INTC0 + INTCHW_INTENCLEAR); } static void bcmring_unmask_irq0(unsigned int irq) { writel(1 << (irq - IRQ_INTC0_START), MM_IO_BASE_INTC0 + INTCHW_INTENABLE); } static void bcmring_mask_irq1(unsigned int irq) { writel(1 << (irq - IRQ_INTC1_START), MM_IO_BASE_INTC1 + INTCHW_INTENCLEAR); } static void bcmring_unmask_irq1(unsigned int irq) { writel(1 << (irq - IRQ_INTC1_START), MM_IO_BASE_INTC1 + INTCHW_INTENABLE); } static void bcmring_mask_irq2(unsigned int irq) { writel(1 << (irq - IRQ_SINTC_START), MM_IO_BASE_SINTC + INTCHW_INTENCLEAR); } static void bcmring_unmask_irq2(unsigned int irq) { writel(1 << (irq - IRQ_SINTC_START), MM_IO_BASE_SINTC + INTCHW_INTENABLE); } static struct irq_chip bcmring_irq0_chip = { .typename = "ARM-INTC0", .ack = bcmring_mask_irq0, .mask = bcmring_mask_irq0, /* mask a specific interrupt, blocking its delivery. */ .unmask = bcmring_unmask_irq0, /* unmaks an interrupt */ }; static struct irq_chip bcmring_irq1_chip = { .typename = "ARM-INTC1", .ack = bcmring_mask_irq1, .mask = bcmring_mask_irq1, .unmask = bcmring_unmask_irq1, }; static struct irq_chip bcmring_irq2_chip = { .typename = "ARM-SINTC", .ack = bcmring_mask_irq2, .mask = bcmring_mask_irq2, .unmask = bcmring_unmask_irq2, }; static void vic_init(void __iomem *base, struct irq_chip *chip, unsigned int irq_start, unsigned int vic_sources) { unsigned int i; for (i = 0; i < 32; i++) { unsigned int irq = irq_start + i; set_irq_chip(irq, chip); set_irq_chip_data(irq, base); if (vic_sources & (1 << i)) { set_irq_handler(irq, handle_level_irq); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } } writel(0, base + INTCHW_INTSELECT); writel(0, base + INTCHW_INTENABLE); writel(~0, base + INTCHW_INTENCLEAR); writel(0, base + INTCHW_IRQSTATUS); writel(~0, base + INTCHW_SOFTINTCLEAR); } void __init bcmring_init_irq(void) { vic_init((void __iomem *)MM_IO_BASE_INTC0, &bcmring_irq0_chip, IRQ_INTC0_START, IRQ_INTC0_VALID_MASK); vic_init((void __iomem *)MM_IO_BASE_INTC1, &bcmring_irq1_chip, IRQ_INTC1_START, IRQ_INTC1_VALID_MASK); vic_init((void __iomem *)MM_IO_BASE_SINTC, &bcmring_irq2_chip, IRQ_SINTC_START, IRQ_SINTC_VALID_MASK); /* special cases */ if (INTCHW_INTC1_GPIO0 & IRQ_INTC1_VALID_MASK) { set_irq_handler(IRQ_GPIO0, handle_simple_irq); } if (INTCHW_INTC1_GPIO1 & IRQ_INTC1_VALID_MASK) { set_irq_handler(IRQ_GPIO1, handle_simple_irq); } }