[deliverable/linux.git] / arch / sparc / kernel / irq.h

#include <linux/platform_device.h>

#include <asm/cpu_type.h>

struct irq_bucket {
        struct irq_bucket *next;
        unsigned int real_irq;
        unsigned int irq;
        unsigned int pil;
};

#define SUN4M_HARD_INT(x)       (0x000000001 << (x))
#define SUN4M_SOFT_INT(x)       (0x000010000 << (x))

#define SUN4D_MAX_BOARD 10
#define SUN4D_MAX_IRQ ((SUN4D_MAX_BOARD + 2) << 5)

/* Map between the irq identifier used in hw to the
 * irq_bucket. The map is sufficient large to hold
 * the sun4d hw identifiers.
 */
extern struct irq_bucket *irq_map[SUN4D_MAX_IRQ];


/* sun4m specific type definitions */

/* This maps direct to CPU specific interrupt registers */
struct sun4m_irq_percpu {
	u32	pending;
	u32	clear;
	u32	set;
};

/* This maps direct to global interrupt registers */
struct sun4m_irq_global {
	u32	pending;
	u32	mask;
	u32	mask_clear;
	u32	mask_set;
	u32	interrupt_target;
};

extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS];
extern struct sun4m_irq_global __iomem *sun4m_irq_global;

/* The following definitions describe the individual platform features: */
#define FEAT_L10_CLOCKSOURCE (1 << 0) /* L10 timer is used as a clocksource */
#define FEAT_L10_CLOCKEVENT  (1 << 1) /* L10 timer is used as a clockevent */
#define FEAT_L14_ONESHOT     (1 << 2) /* L14 timer clockevent can oneshot */

/*
 * Platform specific configuration
 * The individual platforms assign their platform
 * specifics in their init functions.
 */
struct sparc_config {
	void (*init_timers)(void);
	unsigned int (*build_device_irq)(struct platform_device *op,
	                                 unsigned int real_irq);

	/* generic clockevent features - see FEAT_* above */
	int features;

	/* clock rate used for clock event timer */
	int clock_rate;

	/* one period for clock source timer */
	unsigned int cs_period;

	/* function to obtain offsett for cs period */
	unsigned int (*get_cycles_offset)(void);

	void (*clear_clock_irq)(void);
	void (*load_profile_irq)(int cpu, unsigned int limit);
};
extern struct sparc_config sparc_config;

unsigned int irq_alloc(unsigned int real_irq, unsigned int pil);
void irq_link(unsigned int irq);
void irq_unlink(unsigned int irq);
void handler_irq(unsigned int pil, struct pt_regs *regs);

unsigned long leon_get_irqmask(unsigned int irq);

#ifdef CONFIG_SMP

/* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */
#define SUN4D_IPI_IRQ 13

extern void sun4d_ipi_interrupt(void);

#endif
Commit	Line	Data
	1	#include <linux/platform_device.h>
	2
	3	#include <asm/cpu_type.h>
	4
	5	struct irq_bucket {
	6	struct irq_bucket *next;
	7	unsigned int real_irq;
	8	unsigned int irq;
	9	unsigned int pil;
	10	};
	11
	12	#define SUN4M_HARD_INT(x) (0x000000001 << (x))
	13	#define SUN4M_SOFT_INT(x) (0x000010000 << (x))
	14
	15	#define SUN4D_MAX_BOARD 10
	16	#define SUN4D_MAX_IRQ ((SUN4D_MAX_BOARD + 2) << 5)
	17
	18	/* Map between the irq identifier used in hw to the
	19	* irq_bucket. The map is sufficient large to hold
	20	* the sun4d hw identifiers.
	21	*/
	22	extern struct irq_bucket *irq_map[SUN4D_MAX_IRQ];
	23
	24
	25	/* sun4m specific type definitions */
	26
	27	/* This maps direct to CPU specific interrupt registers */
	28	struct sun4m_irq_percpu {
	29	u32 pending;
	30	u32 clear;
	31	u32 set;
	32	};
	33
	34	/* This maps direct to global interrupt registers */
	35	struct sun4m_irq_global {
	36	u32 pending;
	37	u32 mask;
	38	u32 mask_clear;
	39	u32 mask_set;
	40	u32 interrupt_target;
	41	};
	42
	43	extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS];
	44	extern struct sun4m_irq_global __iomem *sun4m_irq_global;
	45
	46	/* The following definitions describe the individual platform features: */
	47	#define FEAT_L10_CLOCKSOURCE (1 << 0) /* L10 timer is used as a clocksource */
	48	#define FEAT_L10_CLOCKEVENT (1 << 1) /* L10 timer is used as a clockevent */
	49	#define FEAT_L14_ONESHOT (1 << 2) /* L14 timer clockevent can oneshot */
	50
	51	/*
	52	* Platform specific configuration
	53	* The individual platforms assign their platform
	54	* specifics in their init functions.
	55	*/
	56	struct sparc_config {
	57	void (*init_timers)(void);
	58	unsigned int (build_device_irq)(struct platform_device op,
	59	unsigned int real_irq);
	60
	61	/* generic clockevent features - see FEAT_* above */
	62	int features;
	63
	64	/* clock rate used for clock event timer */
	65	int clock_rate;
	66
	67	/* one period for clock source timer */
	68	unsigned int cs_period;
	69
	70	/* function to obtain offsett for cs period */
	71	unsigned int (*get_cycles_offset)(void);
	72
	73	void (*clear_clock_irq)(void);
	74	void (*load_profile_irq)(int cpu, unsigned int limit);
	75	};
	76	extern struct sparc_config sparc_config;
	77
	78	unsigned int irq_alloc(unsigned int real_irq, unsigned int pil);
	79	void irq_link(unsigned int irq);
	80	void irq_unlink(unsigned int irq);
	81	void handler_irq(unsigned int pil, struct pt_regs *regs);
	82
	83	unsigned long leon_get_irqmask(unsigned int irq);
	84
	85	#ifdef CONFIG_SMP
	86
	87	/* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */
	88	#define SUN4D_IPI_IRQ 13
	89
	90	extern void sun4d_ipi_interrupt(void);
	91
	92	#endif