GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

irq_domain: Move irq_domain code from powerpc to kernel/irq

Browse source 
This patch only moves the code.  It doesn't make any changes, and the
code is still only compiled for powerpc.  Follow-on patches will generalize
the code for other architectures.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Milton Miller <miltonm@bga.com>
Tested-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Grant Likely 2012-02-16 01:37:49 -07:00
parent 6d9285b00f
commit cc79ca691c
5 changed files with 643 additions and 650 deletions
Download patch file Download diff file Expand all files Collapse all files

46
include/linux/irqdomain.h
View file

@ -16,6 +16,17 @@
* (though a domain can cover more than one PIC if they have a flat number
* model). It's the domain callbacks that are responsible for setting the
* irq_chip on a given irq_desc after it's been mapped.
*
* The host code and data structures are agnostic to whether or not
* we use an open firmware device-tree. We do have references to struct
* device_node in two places: in irq_find_host() to find the host matching
* a given interrupt controller node, and of course as an argument to its
* counterpart domain->ops->match() callback. However, those are treated as
* generic pointers by the core and the fact that it's actually a device-node
* pointer is purely a convention between callers and implementation. This
* code could thus be used on other architectures by replacing those two
* by some sort of arch-specific void * "token" used to identify interrupt
* controllers.
*/
#ifndef _LINUX_IRQDOMAIN_H
@ -108,6 +119,32 @@ struct irq_domain {
};
#ifdef CONFIG_IRQ_DOMAIN
#ifdef CONFIG_PPC
extern struct irq_domain *irq_alloc_host(struct device_node *of_node,
unsigned int revmap_type,
unsigned int revmap_arg,
struct irq_domain_ops *ops,
irq_hw_number_t inval_irq);
extern struct irq_domain *irq_find_host(struct device_node *node);
extern void irq_set_default_host(struct irq_domain *host);
extern void irq_set_virq_count(unsigned int count);
extern unsigned int irq_create_mapping(struct irq_domain *host,
irq_hw_number_t hwirq);
extern void irq_dispose_mapping(unsigned int virq);
extern unsigned int irq_find_mapping(struct irq_domain *host,
irq_hw_number_t hwirq);
extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
extern void irq_radix_revmap_insert(struct irq_domain *host, unsigned int virq,
irq_hw_number_t hwirq);
extern unsigned int irq_radix_revmap_lookup(struct irq_domain *host,
irq_hw_number_t hwirq);
extern unsigned int irq_linear_revmap(struct irq_domain *host,
irq_hw_number_t hwirq);
#else /* CONFIG_PPC */
/**
* irq_domain_to_irq() - Translate from a hardware irq to a linux irq number
*
@ -137,15 +174,16 @@ extern void irq_domain_add(struct irq_domain *domain);
extern void irq_domain_del(struct irq_domain *domain);
extern struct irq_domain_ops irq_domain_simple_ops;
#endif /* CONFIG_IRQ_DOMAIN */
#if defined(CONFIG_IRQ_DOMAIN) && defined(CONFIG_OF_IRQ)
#if defined(CONFIG_OF_IRQ)
extern void irq_domain_add_simple(struct device_node *controller, int irq_base);
extern void irq_domain_generate_simple(const struct of_device_id *match,
u64 phys_base, unsigned int irq_start);
#else /* CONFIG_IRQ_DOMAIN && CONFIG_OF_IRQ */
#else /* CONFIG_OF_IRQ */
static inline void irq_domain_generate_simple(const struct of_device_id *match,
u64 phys_base, unsigned int irq_start) { }
#endif /* CONFIG_IRQ_DOMAIN && CONFIG_OF_IRQ */
#endif /* !CONFIG_OF_IRQ */
#endif /* !CONFIG_PPC */
#endif /* CONFIG_IRQ_DOMAIN */
#endif /* _LINUX_IRQDOMAIN_H */