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sparc32,leon: add support for extended interrupt controller

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The extended IRQ controller gives the LEON 16 more IRQs.

The patch installs a custom handler for the exetended controller
IRQ, where a register is read and the "real" IRQ causing IRQ is
determined.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Hellstrom
2011-04-19 23:41:22 +00:00
committed by David S. Miller
parent d61a38b2ce
commit 4c6773c395
2 changed files with 74 additions and 28 deletions
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7
arch/sparc/include/asm/leon.h
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@ -183,7 +183,6 @@ static inline void leon_srmmu_enabletlb(void)
/* macro access for leon_readnobuffer_reg() */
#define LEON_BYPASSCACHE_LOAD_VA(x) leon_readnobuffer_reg((unsigned long)(x))
extern void sparc_leon_eirq_register(int eirq);
extern void leon_init(void);
extern void leon_switch_mm(void);
extern void leon_init_IRQ(void);
@ -339,9 +338,9 @@ struct leon2_cacheregs {
#include <linux/interrupt.h>
struct device_node;
extern int sparc_leon_eirq_get(int eirq, int cpu);
extern irqreturn_t sparc_leon_eirq_isr(int dummy, void *dev_id);
extern void sparc_leon_eirq_register(int eirq);
extern unsigned int leon_build_device_irq(unsigned int real_irq,
irq_flow_handler_t flow_handler,
const char *name, int do_ack);
extern void leon_clear_clock_irq(void);
extern void leon_load_profile_irq(int cpu, unsigned int limit);
extern void leon_init_timers(irq_handler_t counter_fn);