1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/platform_device.h>
3
4 #include <asm/cpu_type.h>
5
6 struct irq_bucket {
7 struct irq_bucket *next;
8 unsigned int real_irq;
9 unsigned int irq;
10 unsigned int pil;
11 };
12
13 #define SUN4M_HARD_INT(x) (0x000000001 << (x))
14 #define SUN4M_SOFT_INT(x) (0x000010000 << (x))
15
16 #define SUN4D_MAX_BOARD 10
17 #define SUN4D_MAX_IRQ ((SUN4D_MAX_BOARD + 2) << 5)
18
19 /* Map between the irq identifier used in hw to the
20 * irq_bucket. The map is sufficient large to hold
21 * the sun4d hw identifiers.
22 */
23 extern struct irq_bucket *irq_map[SUN4D_MAX_IRQ];
24
25
26 /* sun4m specific type definitions */
27
28 /* This maps direct to CPU specific interrupt registers */
29 struct sun4m_irq_percpu {
30 u32 pending;
31 u32 clear;
32 u32 set;
33 };
34
35 /* This maps direct to global interrupt registers */
36 struct sun4m_irq_global {
37 u32 pending;
38 u32 mask;
39 u32 mask_clear;
40 u32 mask_set;
41 u32 interrupt_target;
42 };
43
44 extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS];
45 extern struct sun4m_irq_global __iomem *sun4m_irq_global;
46
47 /* The following definitions describe the individual platform features: */
48 #define FEAT_L10_CLOCKSOURCE (1 << 0) /* L10 timer is used as a clocksource */
49 #define FEAT_L10_CLOCKEVENT (1 << 1) /* L10 timer is used as a clockevent */
50 #define FEAT_L14_ONESHOT (1 << 2) /* L14 timer clockevent can oneshot */
51
52 /*
53 * Platform specific configuration
54 * The individual platforms assign their platform
55 * specifics in their init functions.
56 */
57 struct sparc_config {
58 void (*init_timers)(void);
59 unsigned int (*build_device_irq)(struct platform_device *op,
60 unsigned int real_irq);
61
62 /* generic clockevent features - see FEAT_* above */
63 int features;
64
65 /* clock rate used for clock event timer */
66 int clock_rate;
67
68 /* one period for clock source timer */
69 unsigned int cs_period;
70
71 /* function to obtain offsett for cs period */
72 unsigned int (*get_cycles_offset)(void);
73
74 void (*clear_clock_irq)(void);
75 void (*load_profile_irq)(int cpu, unsigned int limit);
76 };
77 extern struct sparc_config sparc_config;
78
79 unsigned int irq_alloc(unsigned int real_irq, unsigned int pil);
80 void irq_link(unsigned int irq);
81 void irq_unlink(unsigned int irq);
82 void handler_irq(unsigned int pil, struct pt_regs *regs);
83
84 unsigned long leon_get_irqmask(unsigned int irq);
85
86 /* irq_32.c */
87 void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs);
88
89 /* sun4m_irq.c */
90 void sun4m_nmi(struct pt_regs *regs);
91
92 /* sun4d_irq.c */
93 void sun4d_handler_irq(unsigned int pil, struct pt_regs *regs);
94
95 #ifdef CONFIG_SMP
96
97 /* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */
98 #define SUN4D_IPI_IRQ 13
99
100 void sun4d_ipi_interrupt(void);
101
102 #endif
103
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