ff18363a3e
type of software interrupt. Roughly, what used to be a bit in spending now maps to a swi thread. Each thread can have multiple handlers, just like a hardware interrupt thread. - Instead of using a bitmask of pending interrupts, we schedule the specific software interrupt thread to run, so spending, NSWI, and the shandlers array are no longer needed. We can now have an arbitrary number of software interrupt threads. When you register a software interrupt thread via sinthand_add(), you get back a struct intrhand that you pass to sched_swi() when you wish to schedule your swi thread to run. - Convert the name of 'struct intrec' to 'struct intrhand' as it is a bit more intuitive. Also, prefix all the members of struct intrhand with 'ih_'. - Make swi_net() a MI function since there is now no point in it being MD. Submitted by: cp
103 lines
4.2 KiB
C
103 lines
4.2 KiB
C
/*-
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* Copyright (c) 1995 Bruce D. Evans.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_MD_VAR_H_
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#define _MACHINE_MD_VAR_H_
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/*
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* Miscellaneous machine-dependent declarations.
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*/
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extern int Maxmem;
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extern u_int atdevbase; /* offset in virtual memory of ISA io mem */
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extern void (*bcopy_vector) __P((const void *from, void *to, size_t len));
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extern int busdma_swi_pending;
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extern int (*copyin_vector) __P((const void *udaddr, void *kaddr,
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size_t len));
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extern int (*copyout_vector) __P((const void *kaddr, void *udaddr,
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size_t len));
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extern u_int cpu_feature;
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extern u_int cpu_high;
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extern u_int cpu_id;
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extern char cpu_vendor[];
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extern u_int cyrix_did;
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extern char kstack[];
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#ifdef PC98
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extern int need_pre_dma_flush;
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extern int need_post_dma_flush;
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#endif
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extern void (*netisrs[32]) __P((void));
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extern int nfs_diskless_valid;
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extern void (*ovbcopy_vector) __P((const void *from, void *to, size_t len));
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extern char sigcode[];
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extern int szsigcode, szosigcode;
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typedef void alias_for_inthand_t __P((u_int cs, u_int ef, u_int esp, u_int ss));
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struct proc;
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struct reg;
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struct fpreg;
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struct dbreg;
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void bcopyb __P((const void *from, void *to, size_t len));
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void busdma_swi __P((void));
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void cpu_halt __P((void));
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void cpu_reset __P((void));
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void cpu_setregs __P((void));
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void cpu_switch_load_gs __P((void)) __asm(__STRING(cpu_switch_load_gs));
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void doreti_iret __P((void)) __asm(__STRING(doreti_iret));
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void doreti_iret_fault __P((void)) __asm(__STRING(doreti_iret_fault));
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void doreti_popl_ds __P((void)) __asm(__STRING(doreti_popl_ds));
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void doreti_popl_ds_fault __P((void)) __asm(__STRING(doreti_popl_ds_fault));
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void doreti_popl_es __P((void)) __asm(__STRING(doreti_popl_es));
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void doreti_popl_es_fault __P((void)) __asm(__STRING(doreti_popl_es_fault));
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void doreti_popl_fs __P((void)) __asm(__STRING(doreti_popl_fs));
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void doreti_popl_fs_fault __P((void)) __asm(__STRING(doreti_popl_fs_fault));
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int fill_fpregs __P((struct proc *, struct fpreg *));
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int fill_regs __P((struct proc *p, struct reg *regs));
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int fill_dbregs __P((struct proc *p, struct dbreg *dbregs));
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void fillw __P((int /*u_short*/ pat, void *base, size_t cnt));
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void i486_bzero __P((void *buf, size_t len));
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void i586_bcopy __P((const void *from, void *to, size_t len));
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void i586_bzero __P((void *buf, size_t len));
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int i586_copyin __P((const void *udaddr, void *kaddr, size_t len));
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int i586_copyout __P((const void *kaddr, void *udaddr, size_t len));
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void i686_pagezero __P((void *addr));
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int is_physical_memory __P((vm_offset_t addr));
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u_long kvtop __P((void *addr));
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void setidt __P((int idx, alias_for_inthand_t *func, int typ, int dpl,
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int selec));
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void swi_vm __P((void *));
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void userconfig __P((void));
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int user_dbreg_trap __P((void));
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int vm_page_zero_idle __P((void));
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#endif /* !_MACHINE_MD_VAR_H_ */
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