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https://opencores.org/ocsvn/or1k_soc_on_altera_embedded_dev_kit/or1k_soc_on_altera_embedded_dev_kit/trunk
Subversion Repositories or1k_soc_on_altera_embedded_dev_kit
[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [arch/] [mips/] [qemu/] [q-irq.c] - Rev 3
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#include <linux/init.h> #include <linux/interrupt.h> #include <linux/linkage.h> #include <asm/i8259.h> #include <asm/irq_cpu.h> #include <asm/mipsregs.h> #include <asm/qemu.h> #include <asm/system.h> #include <asm/time.h> asmlinkage void plat_irq_dispatch(void) { unsigned int pending = read_c0_status() & read_c0_cause(); if (pending & 0x8000) { do_IRQ(Q_COUNT_COMPARE_IRQ); return; } if (pending & 0x0400) { int irq = i8259_irq(); if (likely(irq >= 0)) do_IRQ(irq); return; } } void __init arch_init_irq(void) { mips_hpt_frequency = QEMU_C0_COUNTER_CLOCK; /* 100MHz */ mips_cpu_irq_init(); init_i8259_irqs(); set_c0_status(0x400); }