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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
f5e706ad SR |
2 | /* irq.h: IRQ registers on the 64-bit Sparc. |
3 | * | |
4 | * Copyright (C) 1996 David S. Miller (davem@davemloft.net) | |
5 | * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz) | |
6 | */ | |
7 | ||
8 | #ifndef _SPARC64_IRQ_H | |
9 | #define _SPARC64_IRQ_H | |
10 | ||
11 | #include <linux/linkage.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/errno.h> | |
14 | #include <linux/interrupt.h> | |
15 | #include <asm/pil.h> | |
16 | #include <asm/ptrace.h> | |
17 | ||
18 | /* IMAP/ICLR register defines */ | |
19 | #define IMAP_VALID 0x80000000UL /* IRQ Enabled */ | |
20 | #define IMAP_TID_UPA 0x7c000000UL /* UPA TargetID */ | |
21 | #define IMAP_TID_JBUS 0x7c000000UL /* JBUS TargetID */ | |
22 | #define IMAP_TID_SHIFT 26 | |
23 | #define IMAP_AID_SAFARI 0x7c000000UL /* Safari AgentID */ | |
24 | #define IMAP_AID_SHIFT 26 | |
25 | #define IMAP_NID_SAFARI 0x03e00000UL /* Safari NodeID */ | |
26 | #define IMAP_NID_SHIFT 21 | |
27 | #define IMAP_IGN 0x000007c0UL /* IRQ Group Number */ | |
28 | #define IMAP_INO 0x0000003fUL /* IRQ Number */ | |
29 | #define IMAP_INR 0x000007ffUL /* Full interrupt number*/ | |
30 | ||
31 | #define ICLR_IDLE 0x00000000UL /* Idle state */ | |
32 | #define ICLR_TRANSMIT 0x00000001UL /* Transmit state */ | |
33 | #define ICLR_PENDING 0x00000003UL /* Pending state */ | |
34 | ||
35 | /* The largest number of unique interrupt sources we support. | |
36 | * If this needs to ever be larger than 255, you need to change | |
44ed3c0c | 37 | * the type of ino_bucket->irq as appropriate. |
f5e706ad | 38 | * |
44ed3c0c | 39 | * ino_bucket->irq allocation is made during {sun4v_,}build_irq(). |
f5e706ad | 40 | */ |
ee6a9333 | 41 | #define NR_IRQS (2048) |
f5e706ad | 42 | |
f05a6865 SR |
43 | void irq_install_pre_handler(int irq, |
44 | void (*func)(unsigned int, void *, void *), | |
45 | void *arg1, void *arg2); | |
f5e706ad | 46 | #define irq_canonicalize(irq) (irq) |
f05a6865 SR |
47 | unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap); |
48 | unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino); | |
49 | unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino); | |
50 | unsigned int sun4v_build_msi(u32 devhandle, unsigned int *irq_p, | |
51 | unsigned int msi_devino_start, | |
52 | unsigned int msi_devino_end); | |
53 | void sun4v_destroy_msi(unsigned int irq); | |
54 | unsigned int sun4u_build_msi(u32 portid, unsigned int *irq_p, | |
55 | unsigned int msi_devino_start, | |
56 | unsigned int msi_devino_end, | |
57 | unsigned long imap_base, | |
58 | unsigned long iclr_base); | |
59 | void sun4u_destroy_msi(unsigned int irq); | |
60 | ||
ee6a9333 | 61 | unsigned int irq_alloc(unsigned int dev_handle, unsigned int dev_ino); |
f05a6865 | 62 | void irq_free(unsigned int irq); |
f5e706ad | 63 | |
f05a6865 SR |
64 | void __init init_IRQ(void); |
65 | void fixup_irqs(void); | |
f5e706ad SR |
66 | |
67 | static inline void set_softint(unsigned long bits) | |
68 | { | |
69 | __asm__ __volatile__("wr %0, 0x0, %%set_softint" | |
70 | : /* No outputs */ | |
71 | : "r" (bits)); | |
72 | } | |
73 | ||
74 | static inline void clear_softint(unsigned long bits) | |
75 | { | |
76 | __asm__ __volatile__("wr %0, 0x0, %%clear_softint" | |
77 | : /* No outputs */ | |
78 | : "r" (bits)); | |
79 | } | |
80 | ||
81 | static inline unsigned long get_softint(void) | |
82 | { | |
83 | unsigned long retval; | |
84 | ||
85 | __asm__ __volatile__("rd %%softint, %0" | |
86 | : "=r" (retval)); | |
87 | return retval; | |
88 | } | |
89 | ||
9a01c3ed CM |
90 | void arch_trigger_cpumask_backtrace(const struct cpumask *mask, |
91 | bool exclude_self); | |
92 | #define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace | |
09ee167c | 93 | |
4f70f7a9 DM |
94 | extern void *hardirq_stack[NR_CPUS]; |
95 | extern void *softirq_stack[NR_CPUS]; | |
96 | #define __ARCH_HAS_DO_SOFTIRQ | |
97 | ||
16550680 DM |
98 | #define NO_IRQ 0xffffffff |
99 | ||
f5e706ad | 100 | #endif |