Introduce the new kernel sub-tree x86 which should contain all the code

shared and generalized between our current amd64, i386 and pc98.

This is just an initial step that should lead to a more complete effort.
For the moment, a very simple porting of cpufreq modules, BIOS calls and
the whole MD specific ISA bus part is added to the sub-tree but ideally
a lot of code might be added and more shared support should grow.

Sponsored by:	Sandvine Incorporated
Reviewed by:	emaste, kib, jhb, imp
Discussed on:	arch
MFC:		3 weeks

1 files changed, 53 insertions, 0 deletions

diff --git a/sys/x86/isa/icu.h b/sys/x86/isa/icu.h
new file mode 100644
index 0000000..d7cd87a
--- /dev/null
+++ b/sys/x86/isa/icu.h
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	from: @(#)icu.h	5.6 (Berkeley) 5/9/91
+ * $FreeBSD$
+ */
+
+/*
+ * AT/386 Interrupt Control constants
+ * W. Jolitz 8/89
+ */
+
+#ifndef _X86_ISA_ICU_H_
+#define	_X86_ISA_ICU_H_
+
+#ifdef PC98
+#define	ICU_IMR_OFFSET	2
+#else
+#define	ICU_IMR_OFFSET	1
+#endif
+
+void	atpic_handle_intr(u_int vector, struct trapframe *frame);
+void	atpic_startup(void);
+
+#endif /* !_X86_ISA_ICU_H_ */