| 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 | |