/* $OpenBSD: footbridge_intr.h,v 1.4 2005/04/19 15:29:47 mickey Exp $ */ /* $NetBSD: footbridge_intr.h,v 1.4 2003/01/03 00:56:00 thorpej Exp $ */ /* * Copyright (c) 2001, 2002 Wasabi Systems, Inc. * All rights reserved. * * Written by Jason R. Thorpe for Wasabi Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _FOOTBRIDGE_INTR_H_ #define _FOOTBRIDGE_INTR_H_ #include /* Define the various Interrupt Priority Levels */ /* Hardware Interrupt Priority Levels are not mutually exclusive. */ #define IPL_NONE 0 /* nothing */ #define IPL_SOFT 1 /* generic soft interrupts */ #define IPL_SOFTCLOCK 2 /* clock software interrupts */ #define IPL_SOFTNET 3 /* network software interrupts */ #define IPL_BIO 4 /* block I/O */ #define IPL_NET 5 /* network */ #define IPL_SOFTSERIAL 6 /* serial software interrupts */ #define IPL_TTY 7 /* terminal */ #define IPL_VM 8 /* memory allocation */ #define IPL_AUDIO 9 /* audio */ #define IPL_CLOCK 10 /* clock */ #define IPL_STATCLOCK 11 /* statclock */ #define IPL_HIGH 12 /* everything */ #define IPL_SERIAL 13 /* serial */ #define NIPL 14 #define IST_UNUSABLE -1 /* interrupt cannot be used */ #define IST_NONE 0 /* none (dummy) */ #define IST_PULSE 1 /* pulsed */ #define IST_EDGE 2 /* edge-triggered */ #define IST_LEVEL 3 /* level-triggered */ #define __NEWINTR /* enables new hooks in cpu_fork()/cpu_switch() */ #define ARM_IRQ_HANDLER _C_LABEL(footbridge_intr_dispatch) #ifndef _LOCORE #include #include #include #include #define INT_SWMASK \ ((1U << IRQ_SOFTINT) | (1U << IRQ_RESERVED0) | \ (1U << IRQ_RESERVED1) | (1U << IRQ_RESERVED2)) #define ICU_INT_HWMASK (0xffffffff & ~(INT_SWMASK | (1U << IRQ_RESERVED3))) /* only call this with interrupts off */ static __inline void __attribute__((__unused__)) footbridge_set_intrmask(void) { extern __volatile uint32_t intr_enabled; /* fetch once so we write the same number to both registers */ uint32_t tmp = intr_enabled & ICU_INT_HWMASK; ((__volatile uint32_t*)(DC21285_ARMCSR_VBASE))[IRQ_ENABLE_SET>>2] = tmp; ((__volatile uint32_t*)(DC21285_ARMCSR_VBASE))[IRQ_ENABLE_CLEAR>>2] = ~tmp; } static __inline void __attribute__((__unused__)) footbridge_splx(int newspl) { extern __volatile uint32_t intr_enabled; extern __volatile int current_spl_level; extern __volatile int footbridge_ipending; extern void footbridge_do_pending(void); int oldirqstate, hwpend; current_spl_level = newspl; hwpend = (footbridge_ipending & ICU_INT_HWMASK) & ~newspl; if (hwpend != 0) { oldirqstate = disable_interrupts(I32_bit); intr_enabled |= hwpend; footbridge_set_intrmask(); restore_interrupts(oldirqstate); } if ((footbridge_ipending & INT_SWMASK) & ~newspl) footbridge_do_pending(); } static __inline int __attribute__((__unused__)) footbridge_splraise(int ipl) { extern __volatile int current_spl_level; extern int footbridge_imask[]; int old; old = current_spl_level; current_spl_level |= footbridge_imask[ipl]; return (old); } static __inline int __attribute__((__unused__)) footbridge_spllower(int ipl) { extern __volatile int current_spl_level; extern int footbridge_imask[]; int old = current_spl_level; footbridge_splx(footbridge_imask[ipl]); return(old); } /* should only be defined in footbridge_intr.c */ #if !defined(ARM_SPL_NOINLINE) #define splx(newspl) footbridge_splx(newspl) #define _spllower(ipl) footbridge_spllower(ipl) #define _splraise(ipl) footbridge_splraise(ipl) void _setsoftintr(int); #else int _splraise(int); int _spllower(int); void splx(int); void _setsoftintr(int); #endif /* ! ARM_SPL_NOINLINE */ #include #include #include #define splsoft() _splraise(IPL_SOFT) #define splsoftclock() _splraise(IPL_SOFTCLOCK) #define splsoftnet() _splraise(IPL_SOFTNET) #define splbio() _splraise(IPL_BIO) #define splnet() _splraise(IPL_NET) #define splsoftserial() _splraise(IPL_SOFTSERIAL) #define spltty() _splraise(IPL_TTY) #define spllpt() spltty() #define splvm() _splraise(IPL_VM) #define splimp() _splraise(IPL_VM) #define splaudio() _splraise(IPL_AUDIO) #define splclock() _splraise(IPL_CLOCK) #define splstatclock() _splraise(IPL_STATCLOCK) #define splhigh() _splraise(IPL_HIGH) #define splserial() _splraise(IPL_SERIAL) #define spl0() (void)_spllower(IPL_NONE) #define splsched() splhigh() #define spllock() splhigh() /* Use generic software interrupt support. */ #include /* footbridge has 32 interrupt lines */ #define NIRQ 32 struct intrhand { TAILQ_ENTRY(intrhand) ih_list; /* link on intrq list */ struct evcount ih_count; /* interrupt counter */ int (*ih_func)(void *); /* handler */ void *ih_arg; /* arg for handler */ int ih_ipl; /* IPL_* */ int ih_irq; /* IRQ number */ }; #define IRQNAMESIZE sizeof("footbridge irq 31") struct intrq { TAILQ_HEAD(, intrhand) iq_list; /* handler list */ int iq_mask; /* IRQs to mask while handling */ int iq_levels; /* IPL_*'s this IRQ has */ int iq_ist; /* share type */ }; #endif /* _LOCORE */ #endif /* _FOOTBRIDGE_INTR_H */