/*- * Copyright (c) 1993 The Regents of the University of California. * All rights reserved. * * 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 by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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. * * $Id: ipl.h,v 1.11 1997/08/21 05:15:08 fsmp Exp $ */ #ifndef _MACHINE_IPL_H_ #define _MACHINE_IPL_H_ #if defined(KERNEL) && !defined(ACTUALLY_LKM_NOT_KERNEL) #ifdef APIC_IO #include #else #include #endif /* * Software interrupt bit numbers in priority order. The priority only * determines which swi will be dispatched next; a higher priority swi * may be dispatched when a nested h/w interrupt handler returns. */ #define SWI_TTY (NHWI + 0) #define SWI_NET (NHWI + 1) #define SWI_CAMNET (NHWI + 2) #define SWI_CAMBIO (NHWI + 3) #define SWI_CLOCK 30 #define SWI_AST 31 /* * Corresponding interrupt-pending bits for ipending. */ #define SWI_TTY_PENDING (1 << SWI_TTY) #define SWI_NET_PENDING (1 << SWI_NET) #define SWI_CAMNET_PENDING (1 << SWI_CAMNET) #define SWI_CAMBIO_PENDING (1 << SWI_CAMBIO) #define SWI_CLOCK_PENDING (1 << SWI_CLOCK) #define SWI_AST_PENDING (1 << SWI_AST) /* * Corresponding interrupt-disable masks for cpl. The ordering is now by * inclusion (where each mask is considered as a set of bits). Everything * except SWI_AST_MASK includes SWI_CLOCK_MASK so that softclock() doesn't * run while other swi handlers are running and timeout routines can call * swi handlers. Everything includes SWI_AST_MASK so that AST's are masked * until just before return to user mode. SWI_TTY_MASK includes SWI_NET_MASK * in case tty interrupts are processed at splsofttty() for a tty that is in * SLIP or PPP line discipline (this is weaker than merging net_imask with * tty_imask in isa.c - splimp() must mask hard and soft tty interrupts, but * spltty() apparently only needs to mask soft net interrupts). */ #define SWI_TTY_MASK (SWI_TTY_PENDING | SWI_CLOCK_MASK | SWI_NET_MASK) #define SWI_CAMNET_MASK (SWI_CAMNET_PENDING | SWI_CLOCK_MASK) #define SWI_CAMBIO_MASK (SWI_CAMBIO_PENDING | SWI_CLOCK_MASK) #define SWI_NET_MASK (SWI_NET_PENDING | SWI_CLOCK_MASK) #define SWI_CLOCK_MASK (SWI_CLOCK_PENDING | SWI_AST_MASK) #define SWI_AST_MASK SWI_AST_PENDING #define SWI_MASK (~HWI_MASK) #endif /* KERNEL && !ACTUALLY_LKM_NOT_KERNEL */ #ifndef LOCORE /* * cpl is preserved by interrupt handlers so it is effectively nonvolatile. * ipending and idelayed are changed by interrupt handlers so they are * volatile. */ #ifdef notyet /* in until pci drivers stop hacking on them */ extern unsigned bio_imask; /* group of interrupts masked with splbio() */ #endif extern unsigned cpl; /* current priority level mask */ #ifdef SMP extern unsigned cil; /* current INTerrupt level mask */ #endif extern volatile unsigned idelayed; /* interrupts to become pending */ extern volatile unsigned ipending; /* active interrupts masked by cpl */ #ifdef notyet /* in until pci drivers stop hacking on them */ extern unsigned net_imask; /* group of interrupts masked with splimp() */ extern unsigned stat_imask; /* interrupts masked with splstatclock() */ extern unsigned tty_imask; /* group of interrupts masked with spltty() */ #endif #endif /* !LOCORE */ #endif /* !_MACHINE_IPL_H_ */