diff options
Diffstat (limited to 'kernel/arch/mips/mti-sead3/sead3-int.c')
| -rw-r--r-- | kernel/arch/mips/mti-sead3/sead3-int.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/kernel/arch/mips/mti-sead3/sead3-int.c b/kernel/arch/mips/mti-sead3/sead3-int.c new file mode 100644 index 000000000..e31e17f81 --- /dev/null +++ b/kernel/arch/mips/mti-sead3/sead3-int.c @@ -0,0 +1,42 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/irqchip/mips-gic.h> +#include <linux/io.h> + +#include <asm/irq_cpu.h> +#include <asm/setup.h> + +#include <asm/mips-boards/sead3int.h> + +#define SEAD_CONFIG_GIC_PRESENT_SHF 1 +#define SEAD_CONFIG_GIC_PRESENT_MSK (1 << SEAD_CONFIG_GIC_PRESENT_SHF) +#define SEAD_CONFIG_BASE 0x1b100110 +#define SEAD_CONFIG_SIZE 4 + +static void __iomem *sead3_config_reg; + +void __init arch_init_irq(void) +{ + if (!cpu_has_veic) + mips_cpu_irq_init(); + + sead3_config_reg = ioremap_nocache(SEAD_CONFIG_BASE, SEAD_CONFIG_SIZE); + gic_present = (__raw_readl(sead3_config_reg) & + SEAD_CONFIG_GIC_PRESENT_MSK) >> + SEAD_CONFIG_GIC_PRESENT_SHF; + pr_info("GIC: %spresent\n", (gic_present) ? "" : "not "); + pr_info("EIC: %s\n", + (current_cpu_data.options & MIPS_CPU_VEIC) ? "on" : "off"); + + if (gic_present) + gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, CPU_INT_GIC, + MIPS_GIC_IRQ_BASE); +} + |