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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/sparc/kernel/irq.h
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#include <linux/platform_device.h>

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#include <asm/btfixup.h>

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struct irq_bucket {

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        struct irq_bucket *next;

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        unsigned int real_irq;

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        unsigned int irq;

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        unsigned int pil;

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};

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#define SUN4D_MAX_BOARD 10

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

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/* Map between the irq identifier used in hw to the

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 * irq_bucket. The map is sufficient large to hold

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 * the sun4d hw identifiers.

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 */

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extern struct irq_bucket *irq_map[SUN4D_MAX_IRQ];

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/* sun4m specific type definitions */

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/* This maps direct to CPU specific interrupt registers */

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struct sun4m_irq_percpu {

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	u32	pending;

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	u32	clear;

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	u32	set;

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};

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/* This maps direct to global interrupt registers */

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struct sun4m_irq_global {

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	u32	pending;

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	u32	mask;

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	u32	mask_clear;

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	u32	mask_set;

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	u32	interrupt_target;

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};

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extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS];

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extern struct sun4m_irq_global __iomem *sun4m_irq_global;

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/*

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 * Platform specific irq configuration

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 * The individual platforms assign their platform

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 * specifics in their init functions.

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 */

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struct sparc_irq_config {

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	void (*init_timers)(irq_handler_t);

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	unsigned int (*build_device_irq)(struct platform_device *op,

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	                                 unsigned int real_irq);

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};

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extern struct sparc_irq_config sparc_irq_config;

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unsigned int irq_alloc(unsigned int real_irq, unsigned int pil);

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void irq_link(unsigned int irq);

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void irq_unlink(unsigned int irq);

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void handler_irq(unsigned int pil, struct pt_regs *regs);

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/* Dave Redman ([email protected])

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 * changed these to function pointers.. it saves cycles and will allow

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 * the irq dependencies to be split into different files at a later date

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 * sun4c_irq.c, sun4m_irq.c etc so we could reduce the kernel size.

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 * Jakub Jelinek ([email protected])

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 * Changed these to btfixup entities... It saves cycles :)

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 */

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BTFIXUPDEF_CALL(void, clear_clock_irq, void)

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BTFIXUPDEF_CALL(void, load_profile_irq, int, unsigned int)

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static inline void clear_clock_irq(void)

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{

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	BTFIXUP_CALL(clear_clock_irq)();

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}

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static inline void load_profile_irq(int cpu, int limit)

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{

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	BTFIXUP_CALL(load_profile_irq)(cpu, limit);

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}

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#ifdef CONFIG_SMP

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BTFIXUPDEF_CALL(void, set_cpu_int, int, int)

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BTFIXUPDEF_CALL(void, clear_cpu_int, int, int)

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BTFIXUPDEF_CALL(void, set_irq_udt, int)

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#define set_cpu_int(cpu,level) BTFIXUP_CALL(set_cpu_int)(cpu,level)

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#define clear_cpu_int(cpu,level) BTFIXUP_CALL(clear_cpu_int)(cpu,level)

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#define set_irq_udt(cpu) BTFIXUP_CALL(set_irq_udt)(cpu)

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

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#define SUN4D_IPI_IRQ 14

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extern void sun4d_ipi_interrupt(void);

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#endif

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