From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- arch/mips/kernel/irq-rm7000.c | 49 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 arch/mips/kernel/irq-rm7000.c (limited to 'arch/mips/kernel/irq-rm7000.c') diff --git a/arch/mips/kernel/irq-rm7000.c b/arch/mips/kernel/irq-rm7000.c new file mode 100644 index 000000000..26f4e4c9d --- /dev/null +++ b/arch/mips/kernel/irq-rm7000.c @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2003 Ralf Baechle + * + * 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. + * + * Handler for RM7000 extended interrupts. These are a non-standard + * feature so we handle them separately from standard interrupts. + */ +#include +#include +#include +#include + +#include +#include + +static inline void unmask_rm7k_irq(struct irq_data *d) +{ + set_c0_intcontrol(0x100 << (d->irq - RM7K_CPU_IRQ_BASE)); +} + +static inline void mask_rm7k_irq(struct irq_data *d) +{ + clear_c0_intcontrol(0x100 << (d->irq - RM7K_CPU_IRQ_BASE)); +} + +static struct irq_chip rm7k_irq_controller = { + .name = "RM7000", + .irq_ack = mask_rm7k_irq, + .irq_mask = mask_rm7k_irq, + .irq_mask_ack = mask_rm7k_irq, + .irq_unmask = unmask_rm7k_irq, + .irq_eoi = unmask_rm7k_irq +}; + +void __init rm7k_cpu_irq_init(void) +{ + int base = RM7K_CPU_IRQ_BASE; + int i; + + clear_c0_intcontrol(0x00000f00); /* Mask all */ + + for (i = base; i < base + 4; i++) + irq_set_chip_and_handler(i, &rm7k_irq_controller, + handle_percpu_irq); +} -- cgit v1.2.3