diff options
| author |   Michael Ellerman <michael@ellerman.id.au> | 2007-06-04 23:00:00 +1000 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2007-06-25 17:02:07 +1000 |
| commit | ee51de5645edee4124db6a479d2e135ebe436748 (patch) | |
| tree | ac1ceab5d8051ca458b8a5f94377eec899dc97cc /include | |
| parent | [POWERPC] Split virq setup logic out into irq_setup_virq() (diff) | |
| download | linux-dev-ee51de5645edee4124db6a479d2e135ebe436748.tar.xz linux-dev-ee51de5645edee4124db6a479d2e135ebe436748.zip | |
[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 <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-powerpc/irq.h | 9 |
1 files changed, 9 insertions, 0 deletions
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. |