1 /* irq.h: IRQ registers on the 64-bit Sparc.
3 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
10 #include <linux/linkage.h>
11 #include <linux/kernel.h>
12 #include <linux/errno.h>
13 #include <linux/interrupt.h>
15 #include <asm/ptrace.h>
17 /* IMAP/ICLR register defines */
18 #define IMAP_VALID 0x80000000UL /* IRQ Enabled */
19 #define IMAP_TID_UPA 0x7c000000UL /* UPA TargetID */
20 #define IMAP_TID_JBUS 0x7c000000UL /* JBUS TargetID */
21 #define IMAP_TID_SHIFT 26
22 #define IMAP_AID_SAFARI 0x7c000000UL /* Safari AgentID */
23 #define IMAP_AID_SHIFT 26
24 #define IMAP_NID_SAFARI 0x03e00000UL /* Safari NodeID */
25 #define IMAP_NID_SHIFT 21
26 #define IMAP_IGN 0x000007c0UL /* IRQ Group Number */
27 #define IMAP_INO 0x0000003fUL /* IRQ Number */
28 #define IMAP_INR 0x000007ffUL /* Full interrupt number*/
30 #define ICLR_IDLE 0x00000000UL /* Idle state */
31 #define ICLR_TRANSMIT 0x00000001UL /* Transmit state */
32 #define ICLR_PENDING 0x00000003UL /* Pending state */
34 /* The largest number of unique interrupt sources we support.
35 * If this needs to ever be larger than 255, you need to change
36 * the type of ino_bucket->irq as appropriate.
38 * ino_bucket->irq allocation is made during {sun4v_,}build_irq().
42 extern void irq_install_pre_handler(int irq
,
43 void (*func
)(unsigned int, void *, void *),
44 void *arg1
, void *arg2
);
45 #define irq_canonicalize(irq) (irq)
46 extern unsigned int build_irq(int inofixup
, unsigned long iclr
, unsigned long imap
);
47 extern unsigned int sun4v_build_irq(u32 devhandle
, unsigned int devino
);
48 extern unsigned int sun4v_build_virq(u32 devhandle
, unsigned int devino
);
49 extern unsigned int sun4v_build_msi(u32 devhandle
, unsigned int *irq_p
,
50 unsigned int msi_devino_start
,
51 unsigned int msi_devino_end
);
52 extern void sun4v_destroy_msi(unsigned int irq
);
53 extern unsigned int sun4u_build_msi(u32 portid
, unsigned int *irq_p
,
54 unsigned int msi_devino_start
,
55 unsigned int msi_devino_end
,
56 unsigned long imap_base
,
57 unsigned long iclr_base
);
58 extern void sun4u_destroy_msi(unsigned int irq
);
60 extern unsigned char irq_alloc(unsigned int dev_handle
,
61 unsigned int dev_ino
);
63 extern void irq_free(unsigned int irq
);
66 extern void __init
init_IRQ(void);
67 extern void fixup_irqs(void);
69 static inline void set_softint(unsigned long bits
)
71 __asm__
__volatile__("wr %0, 0x0, %%set_softint"
76 static inline void clear_softint(unsigned long bits
)
78 __asm__
__volatile__("wr %0, 0x0, %%clear_softint"
83 static inline unsigned long get_softint(void)
87 __asm__
__volatile__("rd %%softint, %0"
92 void arch_trigger_all_cpu_backtrace(void);
93 #define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
95 extern void *hardirq_stack
[NR_CPUS
];
96 extern void *softirq_stack
[NR_CPUS
];
97 #define __ARCH_HAS_DO_SOFTIRQ
99 #define NO_IRQ 0xffffffff