034dc442ad
sections. - Add implementations of the critical_enter() and critical_exit() functions and remove restore_intr() and save_intr(). - Remove the somewhat bogus disable_intr() and enable_intr() functions on the alpha as the alpha actually uses a priority level and not simple bit flag on the CPU.
197 lines
3.9 KiB
C
197 lines
3.9 KiB
C
/*-
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* Copyright (c) 1998 Doug Rabson
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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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*
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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_CPUFUNC_H_
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#define _MACHINE_CPUFUNC_H_
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#ifdef _KERNEL
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#include <sys/types.h>
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#ifdef __GNUC__
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static __inline void
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breakpoint(void)
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{
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__asm __volatile("break 0x80100"); /* XXX use linux value */
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}
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#endif
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static __inline u_int8_t
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inb(u_int port)
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{
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return 0; /* TODO: implement this */
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}
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static __inline u_int16_t
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inw(u_int port)
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{
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return 0; /* TODO: implement this */
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}
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static __inline u_int32_t
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inl(u_int port)
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{
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return 0; /* TODO: implement this */
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}
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static __inline void
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insb(u_int port, void *addr, size_t count)
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{
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u_int8_t *p = addr;
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while (count--)
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*p++ = inb(port);
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}
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static __inline void
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insw(u_int port, void *addr, size_t count)
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{
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u_int16_t *p = addr;
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while (count--)
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*p++ = inw(port);
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}
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static __inline void
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insl(u_int port, void *addr, size_t count)
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{
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u_int32_t *p = addr;
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while (count--)
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*p++ = inl(port);
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}
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static __inline void
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outb(u_int port, u_int8_t data)
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{
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return; /* TODO: implement this */
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}
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static __inline void
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outw(u_int port, u_int16_t data)
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{
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return; /* TODO: implement this */
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}
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static __inline void
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outl(u_int port, u_int32_t data)
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{
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return; /* TODO: implement this */
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}
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static __inline void
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outsb(u_int port, const void *addr, size_t count)
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{
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const u_int8_t *p = addr;
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while (count--)
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outb(port, *p++);
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}
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static __inline void
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outsw(u_int port, const void *addr, size_t count)
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{
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const u_int16_t *p = addr;
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while (count--)
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outw(port, *p++);
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}
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static __inline void
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outsl(u_int port, const void *addr, size_t count)
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{
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const u_int32_t *p = addr;
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while (count--)
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outl(port, *p++);
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}
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static __inline u_int8_t
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readb(u_int addr)
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{
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return 0; /* TODO: implement this */
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}
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static __inline u_int16_t
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readw(u_int addr)
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{
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return 0; /* TODO: implement this */
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}
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static __inline u_int32_t
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readl(u_int addr)
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{
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return 0; /* TODO: implement this */
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}
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static __inline void
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writeb(u_int addr, u_int8_t data)
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{
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return; /* TODO: implement this */
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}
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static __inline void
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writew(u_int addr, u_int16_t data)
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{
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return; /* TODO: implement this */
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}
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static __inline void
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writel(u_int addr, u_int32_t data)
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{
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return; /* TODO: implement this */
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}
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static __inline void
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disable_intr(void)
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{
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__asm __volatile ("rsm psr.i;;");
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}
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static __inline void
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enable_intr(void)
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{
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__asm __volatile (";; ssm psr.i;; srlz.d");
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}
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static __inline critical_t
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critical_enter(void)
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{
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critical_t psr;
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__asm __volatile ("mov %0=psr;;" : "=r" (psr));
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disable_intr();
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return (psr);
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}
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static __inline void
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critical_exit(critical_t psr)
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{
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__asm __volatile ("mov psr.l=%0;; srlz.d" :: "r" (psr));
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}
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#endif /* _KERNEL */
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#endif /* !_MACHINE_CPUFUNC_H_ */
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