From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001 From: Yuval Adam <_@yuv.al> Date: Wed, 30 Aug 2017 08:25:59 +0000 Subject: Initial file dump from open source release --- arch/ia64/kernel/irq_lsapic.c | 44 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 arch/ia64/kernel/irq_lsapic.c (limited to 'arch/ia64/kernel/irq_lsapic.c') diff --git a/arch/ia64/kernel/irq_lsapic.c b/arch/ia64/kernel/irq_lsapic.c new file mode 100644 index 00000000..1b3a776e --- /dev/null +++ b/arch/ia64/kernel/irq_lsapic.c @@ -0,0 +1,44 @@ +/* + * LSAPIC Interrupt Controller + * + * This takes care of interrupts that are generated by the CPU's + * internal Streamlined Advanced Programmable Interrupt Controller + * (LSAPIC), such as the ITC and IPI interrupts. + * + * Copyright (C) 1999 VA Linux Systems + * Copyright (C) 1999 Walt Drummond + * Copyright (C) 2000 Hewlett-Packard Co + * Copyright (C) 2000 David Mosberger-Tang + */ + +#include +#include + +static unsigned int +lsapic_noop_startup (struct irq_data *data) +{ + return 0; +} + +static void +lsapic_noop (struct irq_data *data) +{ + /* nothing to do... */ +} + +static int lsapic_retrigger(struct irq_data *data) +{ + ia64_resend_irq(data->irq); + + return 1; +} + +struct irq_chip irq_type_ia64_lsapic = { + .name = "LSAPIC", + .irq_startup = lsapic_noop_startup, + .irq_shutdown = lsapic_noop, + .irq_enable = lsapic_noop, + .irq_disable = lsapic_noop, + .irq_ack = lsapic_noop, + .irq_retrigger = lsapic_retrigger, +}; -- cgit v1.3.1