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f5e706ad SR |
1 | /* irq.h: IRQ registers on the 64-bit Sparc. |
2 | * | |
3 | * Copyright (C) 1996 David S. Miller (davem@davemloft.net) | |
4 | * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz) | |
5 | */ | |
6 | ||
7 | #ifndef _SPARC64_IRQ_H | |
8 | #define _SPARC64_IRQ_H | |
9 | ||
10 | #include <linux/linkage.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/errno.h> | |
13 | #include <linux/interrupt.h> | |
14 | #include <asm/pil.h> | |
15 | #include <asm/ptrace.h> | |
16 | ||
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*/ | |
29 | ||
30 | #define ICLR_IDLE 0x00000000UL /* Idle state */ | |
31 | #define ICLR_TRANSMIT 0x00000001UL /* Transmit state */ | |
32 | #define ICLR_PENDING 0x00000003UL /* Pending state */ | |
33 | ||
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->virt_irq as appropriate. | |
37 | * | |
38 | * ino_bucket->virt_irq allocation is made during {sun4v_,}build_irq(). | |
39 | */ | |
40 | #define NR_IRQS 255 | |
41 | ||
42 | extern void irq_install_pre_handler(int virt_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 *virt_irq_p, | |
50 | unsigned int msi_devino_start, | |
51 | unsigned int msi_devino_end); | |
52 | extern void sun4v_destroy_msi(unsigned int virt_irq); | |
53 | extern unsigned int sun4u_build_msi(u32 portid, unsigned int *virt_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 virt_irq); | |
59 | extern unsigned int sbus_build_irq(void *sbus, unsigned int ino); | |
60 | ||
61 | extern unsigned char virt_irq_alloc(unsigned int dev_handle, | |
62 | unsigned int dev_ino); | |
63 | #ifdef CONFIG_PCI_MSI | |
64 | extern void virt_irq_free(unsigned int virt_irq); | |
65 | #endif | |
66 | ||
67 | extern void __init init_IRQ(void); | |
68 | extern void fixup_irqs(void); | |
69 | ||
70 | static inline void set_softint(unsigned long bits) | |
71 | { | |
72 | __asm__ __volatile__("wr %0, 0x0, %%set_softint" | |
73 | : /* No outputs */ | |
74 | : "r" (bits)); | |
75 | } | |
76 | ||
77 | static inline void clear_softint(unsigned long bits) | |
78 | { | |
79 | __asm__ __volatile__("wr %0, 0x0, %%clear_softint" | |
80 | : /* No outputs */ | |
81 | : "r" (bits)); | |
82 | } | |
83 | ||
84 | static inline unsigned long get_softint(void) | |
85 | { | |
86 | unsigned long retval; | |
87 | ||
88 | __asm__ __volatile__("rd %%softint, %0" | |
89 | : "=r" (retval)); | |
90 | return retval; | |
91 | } | |
92 | ||
93 | #endif |