cf3c20ae |
1 | /* $OpenBSD: intc.h,v 1.2 2014/03/29 18:09:28 guenther Exp $ */ |
2 | /* |
3 | * Copyright (c) 2007,2009 Dale Rahn <drahn@openbsd.org> |
4 | * |
5 | * Permission to use, copy, modify, and distribute this software for any |
6 | * purpose with or without fee is hereby granted, provided that the above |
7 | * copyright notice and this permission notice appear in all copies. |
8 | * |
9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
16 | */ |
17 | |
18 | #ifndef _OMAPINTC_INTR_H_ |
19 | #define _OMAPINTC_INTR_H_ |
20 | |
21 | #ifndef _LOCORE |
22 | |
23 | #include <arm/armreg.h> |
24 | #include <arm/cpufunc.h> |
25 | #include <machine/intr.h> |
26 | #include <arm/softintr.h> |
27 | |
28 | extern volatile int current_spl_level; |
29 | extern volatile int softint_pending; |
30 | void intc_do_pending(void); |
31 | |
32 | #define SI_TO_IRQBIT(si) (1U<<(si)) |
33 | void intc_setipl(int new); |
34 | void intc_splx(int new); |
35 | int intc_splraise(int ipl); |
36 | int intc_spllower(int ipl); |
37 | void intc_setsoftintr(int si); |
38 | |
39 | /* |
40 | * An useful function for interrupt handlers. |
41 | * XXX: This shouldn't be here. |
42 | */ |
43 | static __inline int |
44 | find_first_bit( uint32_t bits ) |
45 | { |
46 | int count; |
47 | |
48 | /* since CLZ is available only on ARMv5, this isn't portable |
49 | * to all ARM CPUs. This file is for OMAPINTC processor. |
50 | */ |
51 | asm( "clz %0, %1" : "=r" (count) : "r" (bits) ); |
52 | return 31-count; |
53 | } |
54 | |
55 | |
56 | /* |
57 | * This function *MUST* be called very early on in a port's |
58 | * initarm() function, before ANY spl*() functions are called. |
59 | * |
60 | * The parameter is the virtual address of the OMAPINTC's Interrupt |
61 | * Controller registers. |
62 | */ |
63 | void intc_intr_bootstrap(vaddr_t); |
64 | |
65 | void intc_irq_handler(void *); |
66 | void *intc_intr_establish(int irqno, int level, int (*func)(void *), |
67 | void *cookie, char *name); |
68 | void intc_intr_disestablish(void *cookie); |
69 | const char *intc_intr_string(void *cookie); |
70 | |
71 | #endif /* ! _LOCORE */ |
72 | |
73 | #endif /* _OMAPINTC_INTR_H_ */ |
74 | |