From e975a0a5924fe5f4ed8329164adf371e255e6fea Mon Sep 17 00:00:00 2001
From: briggs <briggs@cvs.openbsd.org>
Date: Tue, 20 Feb 1996 05:38:46 +0000
Subject: A few more things from NetBSD: - Move spl stuff from param.h to
 psl.h.  Prototype delay() in param.h. - param.h: Fix #includes. - param.h:
 Move splimp to 2 and spltty to 1.

---
 sys/arch/mac68k/include/psl.h | 53 ++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 52 insertions(+), 1 deletion(-)

(limited to 'sys/arch/mac68k/include/psl.h')

diff --git a/sys/arch/mac68k/include/psl.h b/sys/arch/mac68k/include/psl.h
index 327f09514ed..a2bb48afb9e 100644
--- a/sys/arch/mac68k/include/psl.h
+++ b/sys/arch/mac68k/include/psl.h
@@ -1,3 +1,54 @@
-/*	$NetBSD: psl.h,v 1.4 1994/10/26 08:46:42 cgd Exp $	*/
+/*	$NetBSD: psl.h,v 1.5 1996/02/17 14:50:42 briggs Exp $	*/
 
+#ifndef PSL_C
 #include <m68k/psl.h>
+
+#if defined(_KERNEL) && !defined(_LOCORE)
+/*
+ * spl functions; all but spl0 are done in-line
+ */
+
+#define _spl(s) \
+({ \
+        register int _spl_r; \
+\
+        __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
+                "&=d" (_spl_r) : "di" (s)); \
+        _spl_r; \
+})
+
+/* spl0 requires checking for software interrupts */
+#define spl1()  _spl(PSL_S|PSL_IPL1)
+#define spl2()  _spl(PSL_S|PSL_IPL2)
+#define spl3()  _spl(PSL_S|PSL_IPL3)
+#define spl4()  _spl(PSL_S|PSL_IPL4)
+#define spl5()  _spl(PSL_S|PSL_IPL5)
+#define spl6()  _spl(PSL_S|PSL_IPL6)
+#define spl7()  _spl(PSL_S|PSL_IPL7)
+
+/* These should be used for:
+   1) ensuring mutual exclusion (why use processor level?)
+   2) allowing faster devices to take priority
+
+   Note that on the mac, most things are masked at spl1, almost
+   everything at spl2, and everything but the panic switch and
+   power at spl4.
+ */
+#define splsoftclock()  spl1()	/* disallow softclock */
+#define splsoftnet()    spl1()	/* disallow network */
+#define splclock()      spl1()	/* disallow clock interrupt */
+#define spltty()        spl1()	/* disallow tty (softserial&adb) interrupts */
+#define splbio()        spl2()	/* disallow block I/O */
+#define splnet()        spl2()	/* disallow network */
+#define splimp()        spl2()	/* disallow imput */
+#define splhigh()       spl7()	/* disallow everything */
+#define splsched()      spl7()	/* disallow scheduling */
+
+#define splstatclock()  spl2()	/* This should be splclock... */
+
+/* watch out for side effects */
+#define splx(s)         ((s) & PSL_IPL ? _spl(s) : spl0())
+
+#endif /* _KERNEL && !_LOCORE */
+
+#endif /* ndef PSL_C */
-- 
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