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| author | darylm503 <darylm503@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-04-27 21:42:16 +0000 |
|---|---|---|
| committer | darylm503 <darylm503@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-04-27 21:42:16 +0000 |
| commit | 2aa62f2bc9a9654687b377d9ca8a8c2c860a3852 (patch) | |
| tree | 62a0991a44327154fb88bf95bd6f7522053db7bb /StdLib/Include/Ipf/machine/acpi_func.h | |
| parent | 98790d814871cc30bbd536673d3a0948047cd2f0 (diff) | |
| download | edk2-platforms-2aa62f2bc9a9654687b377d9ca8a8c2c860a3852.tar.xz | |
Standard Libraries for EDK II.
This set of three packages: AppPkg, StdLib, StdLibPrivateInternalFiles; contains the implementation of libraries based upon non-UEFI standards such as ISO/IEC-9899, the library portion of the C Language Standard, POSIX, etc.
AppPkg contains applications that make use of the standard libraries defined in the StdLib Package.
StdLib contains header (include) files and the implementations of the standard libraries.
StdLibPrivateInternalFiles contains files for the exclusive use of the library implementations in StdLib. These files should never be directly referenced from applications or other code.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11600 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'StdLib/Include/Ipf/machine/acpi_func.h')
| -rw-r--r-- | StdLib/Include/Ipf/machine/acpi_func.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/StdLib/Include/Ipf/machine/acpi_func.h b/StdLib/Include/Ipf/machine/acpi_func.h new file mode 100644 index 0000000000..000fbbd9ac --- /dev/null +++ b/StdLib/Include/Ipf/machine/acpi_func.h @@ -0,0 +1,107 @@ +/* $NetBSD: acpi_func.h,v 1.2 2006/05/14 21:55:38 elad Exp $ */
+
+/*-
+ * Copyright (c) 2002 Mitsuru IWASAKI
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD: src/sys/ia64/include/acpica_machdep.h,v 1.4 2004/10/11 05:39:15 njl Exp $
+ */
+
+/******************************************************************************
+ *
+ * Name: acpica_machdep.h - arch-specific defines, etc.
+ * $Revision: 1.2 $
+ *
+ *****************************************************************************/
+
+#ifndef _IA64_ACPI_FUNC_H_
+#define _IA64_ACPI_FUNC_H_
+
+#include <machine/cpufunc.h>
+#include <machine/atomic.h>
+
+/* Asm macros */
+
+#define ACPI_ASM_MACROS
+#define BREAKPOINT3
+#define ACPI_DISABLE_IRQS() disable_intr()
+#define ACPI_ENABLE_IRQS() enable_intr()
+
+#define ACPI_FLUSH_CPU_CACHE() /* XXX ia64_fc()? */
+
+
+/* Section 5.2.9.1: global lock acquire/release functions */
+extern int acpi_acquire_global_lock(uint32_t *lock);
+extern int acpi_release_global_lock(uint32_t *lock);
+#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
+ ((Acq) = acpi_acquire_global_lock(GLptr))
+#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
+ ((Acq) = acpi_release_global_lock(GLptr))
+
+
+/* Section 5.2.9.1: global lock acquire/release functions */
+#define GL_ACQUIRED (-1)
+#define GL_BUSY 0
+#define GL_BIT_PENDING 0x1
+#define GL_BIT_OWNED 0x2
+#define GL_BIT_MASK (GL_BIT_PENDING | GL_BIT_OWNED)
+
+/*
+ * Acquire the global lock. If busy, set the pending bit. The caller
+ * will wait for notification from the BIOS that the lock is available
+ * and then attempt to acquire it again.
+ */
+int
+acpi_acquire_global_lock(uint32_t *lock)
+{
+ uint32_t new, old;
+
+ do {
+ old = *lock;
+ new = ((old & ~GL_BIT_MASK) | GL_BIT_OWNED) |
+ ((old >> 1) & GL_BIT_PENDING);
+ } while (atomic_cmpset_acq_int(lock, old, new) == 0);
+
+ return ((new < GL_BIT_MASK) ? GL_ACQUIRED : GL_BUSY);
+}
+
+/*
+ * Release the global lock, returning whether there is a waiter pending.
+ * If the BIOS set the pending bit, OSPM must notify the BIOS when it
+ * releases the lock.
+ */
+int
+acpi_release_global_lock(uint32_t *lock)
+{
+ uint32_t new, old;
+
+ do {
+ old = *lock;
+ new = old & ~GL_BIT_MASK;
+ } while (atomic_cmpset_rel_int(lock, old, new) == 0);
+
+ return (old & GL_BIT_PENDING);
+}
+
+#endif /* _IA64_ACPI_FUNC_H_ */
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