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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 /* irq_32.c */
86 void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs);
87 
88 /* sun4m_irq.c */
89 void sun4m_nmi(struct pt_regs *regs);
90 
91 /* sun4d_irq.c */
92 void sun4d_handler_irq(unsigned int pil, struct pt_regs *regs);
93 
94 #ifdef CONFIG_SMP
95 
96 /* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */
97 #define SUN4D_IPI_IRQ 13
98 
99 void sun4d_ipi_interrupt(void);
100 
101 #endif
102