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| author |   Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-11-06 15:36:37 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-11-06 15:36:37 +0100 |
| commit | 2fc2991175bf77395e6b15fe6b2304d3bf72da40 (patch) | |
| tree | b0ff38c09240e7c00e1577d447ebe89143d752dc /arch/mips/qemu/q-irq.c | |
| parent | [MTD] mtdchar: Return EINVAL for bad seeks instead of fixing up to valid byte (diff) | |
| parent | [PATCH] nvidiafb: Geforce 7800 series support added (diff) | |
| download | linux-dev-2fc2991175bf77395e6b15fe6b2304d3bf72da40.tar.xz linux-dev-2fc2991175bf77395e6b15fe6b2304d3bf72da40.zip | |
Merge branch 'master' of /home/tglx/work/mtd/git/linux-2.6.git/
Diffstat (limited to 'arch/mips/qemu/q-irq.c')
| -rw-r--r-- | arch/mips/qemu/q-irq.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/mips/qemu/q-irq.c b/arch/mips/qemu/q-irq.c new file mode 100644 index 000000000000..2c4e0704ff10 --- /dev/null +++ b/arch/mips/qemu/q-irq.c @@ -0,0 +1,37 @@ +#include <linux/init.h> +#include <linux/linkage.h> + +#include <asm/i8259.h> +#include <asm/mipsregs.h> +#include <asm/qemu.h> +#include <asm/system.h> +#include <asm/time.h> + +extern asmlinkage void qemu_handle_int(void); + +asmlinkage void do_qemu_int(struct pt_regs *regs) +{ + unsigned int pending = read_c0_status() & read_c0_cause(); + + if (pending & 0x8000) { + ll_timer_interrupt(Q_COUNT_COMPARE_IRQ, regs); + return; + } + if (pending & 0x0400) { + int irq = i8259_irq(); + + if (likely(irq >= 0)) + do_IRQ(irq, regs); + + return; + } +} + +void __init arch_init_irq(void) +{ + set_except_vector(0, qemu_handle_int); + mips_hpt_frequency = QEMU_C0_COUNTER_CLOCK; /* 100MHz */ + + init_i8259_irqs(); + set_c0_status(0x8400); +} |