#ifndef _M68K_SYSTEM_H
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#ifndef _M68K_SYSTEM_H
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#define _M68K_SYSTEM_H
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#define _M68K_SYSTEM_H
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#include <linux/config.h> /* get configuration macros */
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#include <linux/config.h> /* get configuration macros */
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#include <linux/linkage.h>
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#include <linux/linkage.h>
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#include <asm/segment.h>
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#include <asm/segment.h>
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#ifdef CONFIG_M68328
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#ifdef CONFIG_M68328
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#include <asm/MC68328.h>
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#include <asm/MC68328.h>
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#endif
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#endif
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#ifdef CONFIG_M68EZ328
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#ifdef CONFIG_M68EZ328
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#include <asm/MC68EZ328.h>
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#include <asm/MC68EZ328.h>
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#endif
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#endif
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extern inline unsigned long rdusp(void) {
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extern inline unsigned long rdusp(void) {
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#ifdef CONFIG_COLDFIRE
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#ifdef CONFIG_COLDFIRE
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extern unsigned int sw_usp;
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extern unsigned int sw_usp;
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return(sw_usp);
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return(sw_usp);
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#else
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#else
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unsigned long usp;
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unsigned long usp;
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__asm__ __volatile__("move %/usp,%0"
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__asm__ __volatile__("move %/usp,%0"
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: "=a" (usp));
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: "=a" (usp));
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return usp;
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return usp;
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#endif
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#endif
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}
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}
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extern inline void wrusp(unsigned long usp) {
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extern inline void wrusp(unsigned long usp) {
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#ifdef CONFIG_COLDFIRE
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#ifdef CONFIG_COLDFIRE
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extern unsigned int sw_usp;
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extern unsigned int sw_usp;
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sw_usp = usp;
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sw_usp = usp;
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#else
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#else
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__asm__ __volatile__("move %0,%/usp"
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__asm__ __volatile__("move %0,%/usp"
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:
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:
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: "a" (usp));
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: "a" (usp));
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#endif
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#endif
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}
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}
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extern inline unsigned long rda5(void) {
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extern inline unsigned long rda5(void) {
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unsigned long a5;
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unsigned long a5;
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__asm__ __volatile__("movel %/a5,%0"
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__asm__ __volatile__("movel %/a5,%0"
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: "=a" (a5));
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: "=a" (a5));
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return a5;
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return a5;
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}
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}
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extern inline void wra5(unsigned long a5) {
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extern inline void wra5(unsigned long a5) {
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__asm__ __volatile__("movel %0,%/a5"
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__asm__ __volatile__("movel %0,%/a5"
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:
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:
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: "a" (a5));
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: "a" (a5));
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}
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}
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/*
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/*
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* switch_to(n) should switch tasks to task ptr, first checking that
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* switch_to(n) should switch tasks to task ptr, first checking that
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* ptr isn't the current task, in which case it does nothing. This
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* ptr isn't the current task, in which case it does nothing. This
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* also clears the TS-flag if the task we switched to has used the
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* also clears the TS-flag if the task we switched to has used the
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* math co-processor latest.
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* math co-processor latest.
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*/
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*/
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/*
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/*
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* switch_to() saves the extra registers, that are not saved
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* switch_to() saves the extra registers, that are not saved
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* automatically by SAVE_SWITCH_STACK in resume(), ie. d0-d5 and
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* automatically by SAVE_SWITCH_STACK in resume(), ie. d0-d5 and
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* a0-a1. Some of these are used by schedule() and its predecessors
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* a0-a1. Some of these are used by schedule() and its predecessors
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* and so we might get see unexpected behaviors when a task returns
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* and so we might get see unexpected behaviors when a task returns
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* with unexpected register values.
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* with unexpected register values.
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*
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*
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* syscall stores these registers itself and none of them are used
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* syscall stores these registers itself and none of them are used
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* by syscall after the function in the syscall has been called.
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* by syscall after the function in the syscall has been called.
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*
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*
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* Beware that resume now expects *next to be in d1 and the offset of
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* Beware that resume now expects *next to be in d1 and the offset of
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* tss to be in a1. This saves a few instructions as we no longer have
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* tss to be in a1. This saves a few instructions as we no longer have
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* to push them onto the stack and read them back right after.
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* to push them onto the stack and read them back right after.
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*
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*
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* 02/17/96 - Jes Sorensen (jds@kom.auc.dk)
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* 02/17/96 - Jes Sorensen (jds@kom.auc.dk)
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*
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*
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* Changed 96/09/19 by Andreas Schwab
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* Changed 96/09/19 by Andreas Schwab
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* pass prev in a0, next in a1, offset of tss in d1, and whether
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* pass prev in a0, next in a1, offset of tss in d1, and whether
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* the mm structures are shared in d2 (to avoid atc flushing).
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* the mm structures are shared in d2 (to avoid atc flushing).
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*/
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*/
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asmlinkage void resume(void);
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asmlinkage void resume(void);
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#define switch_to(prev,next) { \
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#define switch_to(prev,next) { \
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register void *_prev __asm__ ("a0") = (prev); \
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register void *_prev __asm__ ("a0") = (prev); \
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register void *_next __asm__ ("a1") = (next); \
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register void *_next __asm__ ("a1") = (next); \
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register int _tssoff __asm__ ("d1") = (int)&((struct task_struct *)0)->tss; \
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register int _tssoff __asm__ ("d1") = (int)&((struct task_struct *)0)->tss; \
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register char _shared __asm__ ("d2") = ((prev)->mm == (next)->mm); \
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register char _shared __asm__ ("d2") = ((prev)->mm == (next)->mm); \
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__asm__ __volatile__("jbsr " SYMBOL_NAME_STR(resume) "\n\t" \
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__asm__ __volatile__("jbsr " SYMBOL_NAME_STR(resume) "\n\t" \
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: : "a" (_prev), "a" (_next), "d" (_tssoff), \
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: : "a" (_prev), "a" (_next), "d" (_tssoff), \
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"d" (_shared) \
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"d" (_shared) \
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: "d0", "d1", "d2", "d3", "d4", "d5", "a0", "a1"); \
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: "d0", "d1", "d2", "d3", "d4", "d5", "a0", "a1"); \
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}
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}
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#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
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#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
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#define tas(ptr) (xchg((ptr),1))
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#define tas(ptr) (xchg((ptr),1))
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struct __xchg_dummy { unsigned long a[100]; };
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struct __xchg_dummy { unsigned long a[100]; };
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#define __xg(x) ((volatile struct __xchg_dummy *)(x))
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#define __xg(x) ((volatile struct __xchg_dummy *)(x))
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#ifdef CONFIG_COLDFIRE
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#ifdef CONFIG_COLDFIRE
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#define sti() __asm__ __volatile__ ( \
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#define sti() __asm__ __volatile__ ( \
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"move %/sr,%%d0\n\t" \
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"move %/sr,%%d0\n\t" \
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"andi.l #0xf8ff,%%d0\n\t" \
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"andi.l #0xf8ff,%%d0\n\t" \
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"move %%d0,%/sr\n" \
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"move %%d0,%/sr\n" \
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: /* no outputs */ \
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: /* no outputs */ \
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: \
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: \
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: "%d0", "memory")
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: "%d0", "memory")
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#define cli() __asm__ __volatile__ ( \
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#define cli() __asm__ __volatile__ ( \
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"move %/sr,%%d0\n\t" \
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"move %/sr,%%d0\n\t" \
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"ori.l #0x0700,%%d0\n\t" \
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"ori.l #0x0700,%%d0\n\t" \
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"move %%d0,%/sr\n" \
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"move %%d0,%/sr\n" \
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: /* no inputs */ \
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: /* no inputs */ \
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: \
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: \
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: "%d0", "memory")
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: "%d0", "memory")
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#else
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#else
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#if defined(CONFIG_ATARI) && !defined(CONFIG_AMIGA) && !defined(CONFIG_MAC)
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#if defined(CONFIG_ATARI) && !defined(CONFIG_AMIGA) && !defined(CONFIG_MAC)
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/* block out HSYNC on the atari */
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/* block out HSYNC on the atari */
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#define sti() __asm__ __volatile__ ("andiw #0xfbff,%/sr": : : "memory")
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#define sti() __asm__ __volatile__ ("andiw #0xfbff,%/sr": : : "memory")
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#else /* portable version */
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#else /* portable version */
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#define sti() __asm__ __volatile__ ("andiw #0xf8ff,%/sr": : : "memory")
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#define sti() __asm__ __volatile__ ("andiw #0xf8ff,%/sr": : : "memory")
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#endif /* machine compilation types */
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#endif /* machine compilation types */
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#define cli() __asm__ __volatile__ ("oriw #0x0700,%/sr": : : "memory")
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#define cli() __asm__ __volatile__ ("oriw #0x0700,%/sr": : : "memory")
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#endif
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#endif
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#define nop() __asm__ __volatile__ ("nop"::)
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#define nop() __asm__ __volatile__ ("nop"::)
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#define mb() __asm__ __volatile__ ("" : : :"memory")
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#define mb() __asm__ __volatile__ ("" : : :"memory")
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#define save_flags(x) \
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#define save_flags(x) \
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__asm__ __volatile__("movew %/sr,%0":"=d" (x) : /* no input */ :"memory")
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__asm__ __volatile__("movew %/sr,%0":"=d" (x) : /* no input */ :"memory")
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#define restore_flags(x) \
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#define restore_flags(x) \
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__asm__ __volatile__("movew %0,%/sr": /* no outputs */ :"d" (x) : "memory")
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__asm__ __volatile__("movew %0,%/sr": /* no outputs */ :"d" (x) : "memory")
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#define iret() __asm__ __volatile__ ("rte": : :"memory", "sp", "cc")
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#define iret() __asm__ __volatile__ ("rte": : :"memory", "sp", "cc")
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#ifndef CONFIG_RMW_INSNS
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#ifndef CONFIG_RMW_INSNS
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static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
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static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
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{
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{
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unsigned long tmp, flags;
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unsigned long tmp, flags;
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save_flags(flags);
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save_flags(flags);
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cli();
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cli();
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switch (size) {
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switch (size) {
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case 1:
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case 1:
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__asm__ __volatile__
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__asm__ __volatile__
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("moveb %2,%0\n\t"
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("moveb %2,%0\n\t"
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"moveb %1,%2"
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"moveb %1,%2"
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: "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
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: "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
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break;
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break;
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case 2:
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case 2:
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__asm__ __volatile__
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__asm__ __volatile__
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("movew %2,%0\n\t"
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("movew %2,%0\n\t"
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"movew %1,%2"
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"movew %1,%2"
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: "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
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: "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
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break;
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break;
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case 4:
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case 4:
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__asm__ __volatile__
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__asm__ __volatile__
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("movel %2,%0\n\t"
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("movel %2,%0\n\t"
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"movel %1,%2"
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"movel %1,%2"
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: "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
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: "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
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break;
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break;
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}
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}
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restore_flags(flags);
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restore_flags(flags);
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return tmp;
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return tmp;
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}
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}
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#else
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#else
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static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
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static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
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{
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{
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switch (size) {
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switch (size) {
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case 1:
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case 1:
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__asm__ __volatile__
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__asm__ __volatile__
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("moveb %2,%0\n\t"
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("moveb %2,%0\n\t"
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"1:\n\t"
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"1:\n\t"
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"casb %0,%1,%2\n\t"
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"casb %0,%1,%2\n\t"
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"jne 1b"
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"jne 1b"
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: "=&d" (x) : "d" (x), "m" (*__xg(ptr)) : "memory");
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: "=&d" (x) : "d" (x), "m" (*__xg(ptr)) : "memory");
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break;
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break;
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case 2:
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case 2:
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__asm__ __volatile__
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__asm__ __volatile__
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("movew %2,%0\n\t"
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("movew %2,%0\n\t"
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"1:\n\t"
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"1:\n\t"
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"casw %0,%1,%2\n\t"
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"casw %0,%1,%2\n\t"
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"jne 1b"
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"jne 1b"
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: "=&d" (x) : "d" (x), "m" (*__xg(ptr)) : "memory");
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: "=&d" (x) : "d" (x), "m" (*__xg(ptr)) : "memory");
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break;
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break;
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case 4:
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case 4:
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__asm__ __volatile__
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__asm__ __volatile__
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("movel %2,%0\n\t"
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("movel %2,%0\n\t"
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"1:\n\t"
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"1:\n\t"
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"casl %0,%1,%2\n\t"
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"casl %0,%1,%2\n\t"
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"jne 1b"
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"jne 1b"
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: "=&d" (x) : "d" (x), "m" (*__xg(ptr)) : "memory");
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: "=&d" (x) : "d" (x), "m" (*__xg(ptr)) : "memory");
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break;
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break;
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}
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}
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return x;
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return x;
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}
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}
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#endif
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#endif
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#ifdef CONFIG_M68332
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#ifdef CONFIG_M68332
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#define HARD_RESET_NOW() ({ \
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#define HARD_RESET_NOW() ({ \
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cli(); \
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cli(); \
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asm(" \
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asm(" \
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movew #0x0000, 0xfffa6a; \
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movew #0x0000, 0xfffa6a; \
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reset; \
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reset; \
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/*movew #0x1557, 0xfffa44;*/ \
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/*movew #0x1557, 0xfffa44;*/ \
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/*movew #0x0155, 0xfffa46;*/ \
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/*movew #0x0155, 0xfffa46;*/ \
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moveal #0, %a0; \
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moveal #0, %a0; \
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movec %a0, %vbr; \
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movec %a0, %vbr; \
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moveal 0, %sp; \
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moveal 0, %sp; \
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moveal 4, %a0; \
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moveal 4, %a0; \
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jmp (%a0); \
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jmp (%a0); \
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"); \
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"); \
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})
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})
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#endif
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#endif
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#if defined( CONFIG_M68328 ) || defined( CONFIG_M68EZ328 )
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#if defined( CONFIG_M68328 ) || defined( CONFIG_M68EZ328 )
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#define HARD_RESET_NOW() ({ \
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#define HARD_RESET_NOW() ({ \
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cli(); \
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cli(); \
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asm(" \
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asm(" \
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moveal #0x10c00000, %a0; \
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moveal #0x10c00000, %a0; \
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moveb #0, 0xFFFFF300; \
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moveb #0, 0xFFFFF300; \
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moveal 0(%a0), %sp; \
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moveal 0(%a0), %sp; \
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moveal 4(%a0), %a0; \
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moveal 4(%a0), %a0; \
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jmp (%a0); \
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jmp (%a0); \
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"); \
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"); \
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})
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})
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#endif
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#endif
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#ifdef CONFIG_COLDFIRE
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#ifdef CONFIG_COLDFIRE
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#if defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || defined(CONFIG_MATtel)
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#if defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || defined(CONFIG_MATtel)
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#define HARD_RESET_NOW() ({ \
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#define HARD_RESET_NOW() ({ \
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asm(" \
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asm(" \
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movew #0x2700, %sr; \
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movew #0x2700, %sr; \
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moveal #0x10000044, %a0; \
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moveal #0x10000044, %a0; \
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movel #0xffffffff, (%a0); \
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movel #0xffffffff, (%a0); \
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moveal #0x10000001, %a0; \
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moveal #0x10000001, %a0; \
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moveb #0x00, (%a0); \
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moveb #0x00, (%a0); \
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moveal #0xf0000004, %a0; \
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moveal #0xf0000004, %a0; \
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moveal (%a0), %a0; \
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moveal (%a0), %a0; \
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jmp (%a0); \
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jmp (%a0); \
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"); \
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"); \
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})
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})
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#else
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#else
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#define HARD_RESET_NOW() ({ \
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#define HARD_RESET_NOW() ({ \
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asm(" \
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asm(" \
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movew #0x2700, %sr; \
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movew #0x2700, %sr; \
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moveal #0x4, %a0; \
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moveal #0x4, %a0; \
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moveal (%a0), %a0; \
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moveal (%a0), %a0; \
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jmp (%a0); \
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jmp (%a0); \
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"); \
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"); \
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})
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})
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#endif
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#endif
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#endif
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#endif
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#endif /* _M68K_SYSTEM_H */
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#endif /* _M68K_SYSTEM_H */
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