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Variable spltty a la Jason Thorpe. Needed for the DraCo variant of com.c.

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is 1996-11-30 00:33:49 +00:00
parent 9035d87865
commit ff0ad9cabb
1 changed files with 20 additions and 3 deletions
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23
sys/arch/amiga/include/psl.h
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@ -1,4 +1,4 @@
/* $NetBSD: psl.h,v 1.10 1996/10/13 03:07:40 christos Exp $ */
/* $NetBSD: psl.h,v 1.11 1996/11/30 00:33:49 is Exp $ */
#ifndef _MACHINE_PSL_H_
#define _MACHINE_PSL_H_
@ -63,8 +63,25 @@
#define splsoftnet() spl1()
#define splbio() spl3()
#define splnet() spl3()
#define spltty() spl4()
#define splimp() spl4()
/*
* spltty hack, idea by Jason Thorpe.
* drivers which need it (at the present only drcom) raise the variable to
* spl5 (the idea being that only ser.c really wants it below 5, and ser
* and drcom will never be present at the same time).
*
* XXX ttyspl is statically initialized in drcom.c at the moment; should
* be some driver independent file.
*
* XXX should ttyspl be volatile? I think not; it is intended to be set only
* during xxx_attach() time, and will be used only later.
* -is
*/
extern u_int16_t amiga_ttyspl;
#define spltty() _spl(amiga_ttyspl)
#define splimp() spltty() /* XXX for the full story, see i386 */
#ifndef LEV6_DEFER
#define splclock() spl6()
#define splstatclock() spl6()