Module Name: src
Committed By: thorpej
Date: Tue Sep 29 01:17:22 UTC 2020
Modified Files:
src/sys/arch/alpha/alpha: pal.s
src/sys/arch/alpha/include: alpha_cpu.h
Log Message:
Add alpha_pal_wtint(), which invokes the WTINT PALcode call.
To generate a diff of this commit:
cvs rdiff -u -r1.15 -r1.16 src/sys/arch/alpha/alpha/pal.s
cvs rdiff -u -r1.51 -r1.52 src/sys/arch/alpha/include/alpha_cpu.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/alpha/alpha/pal.s
diff -u src/sys/arch/alpha/alpha/pal.s:1.15 src/sys/arch/alpha/alpha/pal.s:1.16
--- src/sys/arch/alpha/alpha/pal.s:1.15 Mon May 13 21:38:30 2002
+++ src/sys/arch/alpha/alpha/pal.s Tue Sep 29 01:17:22 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: pal.s,v 1.15 2002/05/13 21:38:30 thorpej Exp $ */
+/* $NetBSD: pal.s,v 1.16 2020/09/29 01:17:22 thorpej Exp $ */
/*
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
@@ -39,7 +39,7 @@
* and Richard T. Witek.
*/
-__KERNEL_RCSID(1, "$NetBSD: pal.s,v 1.15 2002/05/13 21:38:30 thorpej Exp $");
+__KERNEL_RCSID(1, "$NetBSD: pal.s,v 1.16 2020/09/29 01:17:22 thorpej Exp $");
inc2: .stabs __FILE__,132,0,0,inc2; .loc 1 __LINE__
/*
@@ -155,3 +155,26 @@ LEAF_NOPROFILE(alpha_pal_wrvptptr,1)
call_pal PAL_OSF1_wrvptptr
RET
END(alpha_pal_wrvptptr)
+
+/*
+ * alpha_pal_wtint: Wait for interrupt. [PRIVILEGED]
+ *
+ * Arguments:
+ * a0 maximum number of clock interrupts to skip
+ *
+ * Return value:
+ * v0 actual number of clock interrupts skipped
+ *
+ * WTINT waits, in a low power mode, for either any device interrupt or
+ * for the next clock interrupt (a0 == 0) or up to the specified number
+ * of clock interrupts to pass. Note that the PCC may slow or stop
+ * while waiting.
+ *
+ * Not all PALcode versions support WTINT. If it is not supported,
+ * an OPDEC fault will occur.
+ */
+ .text
+LEAF_NOPROFILE(alpha_pal_wtint,1)
+ call_pal PAL_wtint
+ RET
+ END(alpha_pal_wtint)
Index: src/sys/arch/alpha/include/alpha_cpu.h
diff -u src/sys/arch/alpha/include/alpha_cpu.h:1.51 src/sys/arch/alpha/include/alpha_cpu.h:1.52
--- src/sys/arch/alpha/include/alpha_cpu.h:1.51 Sat Sep 5 16:29:08 2020
+++ src/sys/arch/alpha/include/alpha_cpu.h Tue Sep 29 01:17:22 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: alpha_cpu.h,v 1.51 2020/09/05 16:29:08 thorpej Exp $ */
+/* $NetBSD: alpha_cpu.h,v 1.52 2020/09/29 01:17:22 thorpej Exp $ */
/*
* Copyright (c) 1996 Carnegie-Mellon University.
@@ -378,6 +378,7 @@ void alpha_pal_halt(void) __attribute__
unsigned long _alpha_pal_swpipl(unsigned long); /* for profiling */
void alpha_pal_wrent(void *, unsigned long);
void alpha_pal_wrvptptr(unsigned long);
+unsigned long alpha_pal_wtint(unsigned long);
#define alpha_pal_draina() __asm volatile("call_pal %0 # PAL_draina" \
: : "i" (PAL_draina) : "memory")
