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45 lines
1.1 KiB
45 lines
1.1 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (C) 2003 Ralf Baechle |
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* |
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* Handler for RM7000 extended interrupts. These are a non-standard |
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* feature so we handle them separately from standard interrupts. |
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*/ |
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#include <linux/init.h> |
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#include <linux/interrupt.h> |
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#include <linux/irq.h> |
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#include <linux/kernel.h> |
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#include <asm/irq_cpu.h> |
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#include <asm/mipsregs.h> |
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static inline void unmask_rm7k_irq(struct irq_data *d) |
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{ |
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set_c0_intcontrol(0x100 << (d->irq - RM7K_CPU_IRQ_BASE)); |
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} |
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static inline void mask_rm7k_irq(struct irq_data *d) |
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{ |
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clear_c0_intcontrol(0x100 << (d->irq - RM7K_CPU_IRQ_BASE)); |
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} |
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static struct irq_chip rm7k_irq_controller = { |
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.name = "RM7000", |
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.irq_ack = mask_rm7k_irq, |
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.irq_mask = mask_rm7k_irq, |
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.irq_mask_ack = mask_rm7k_irq, |
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.irq_unmask = unmask_rm7k_irq, |
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.irq_eoi = unmask_rm7k_irq |
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}; |
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void __init rm7k_cpu_irq_init(void) |
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{ |
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int base = RM7K_CPU_IRQ_BASE; |
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int i; |
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clear_c0_intcontrol(0x00000f00); /* Mask all */ |
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for (i = base; i < base + 4; i++) |
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irq_set_chip_and_handler(i, &rm7k_irq_controller, |
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handle_percpu_irq); |
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}
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