From ee51de5645edee4124db6a479d2e135ebe436748 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Mon, 4 Jun 2007 23:00:00 +1000 Subject: [POWERPC] Add irq_create_direct_mapping() This patch adds irq_create_direct_mapping(). This routine is an alternative to irq_create_mapping(), for irq controllers that can use linux virq numbers directly as hardware numbers. Signed-off-by: Michael Ellerman Acked-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- include/asm-powerpc/irq.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include') diff --git a/include/asm-powerpc/irq.h b/include/asm-powerpc/irq.h index 05dd5a3eb3aa..0485c53db2b5 100644 --- a/include/asm-powerpc/irq.h +++ b/include/asm-powerpc/irq.h @@ -223,6 +223,15 @@ extern void irq_dispose_mapping(unsigned int virq); extern unsigned int irq_find_mapping(struct irq_host *host, irq_hw_number_t hwirq); +/** + * irq_create_direct_mapping - Allocate a virq for direct mapping + * @host: host to allocate the virq for or NULL for default host + * + * This routine is used for irq controllers which can choose the hardware + * interrupt numbers they generate. In such a case it's simplest to use + * the linux virq as the hardware interrupt number. + */ +extern unsigned int irq_create_direct_mapping(struct irq_host *host); /** * irq_radix_revmap - Find a linux virq from a hw irq number. -- cgit v1.2.3-59-g8ed1b