1 files changed, 49 insertions, 0 deletions

diff --git a/arch/x86/include/asm/acenv.h b/arch/x86/include/asm/acenv.h
new file mode 100644
index 000000000000..66873297e9f5
--- /dev/null
+++ b/arch/x86/include/asm/acenv.h
@@ -0,0 +1,49 @@
+/*
+ * X86 specific ACPICA environments and implementation
+ *
+ * Copyright (C) 2014, Intel Corporation
+ *   Author: Lv Zheng <lv.zheng@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _ASM_X86_ACENV_H
+#define _ASM_X86_ACENV_H
+
+#include <asm/special_insns.h>
+
+/* Asm macros */
+
+#define ACPI_FLUSH_CPU_CACHE()  wbinvd()
+
+#ifdef CONFIG_ACPI
+
+int __acpi_acquire_global_lock(unsigned int *lock);
+int __acpi_release_global_lock(unsigned int *lock);
+
+#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
+        ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
+
+#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
+        ((Acq) = __acpi_release_global_lock(&facs->global_lock))
+
+/*
+ * Math helper asm macros
+ */
+#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
+        asm("divl %2;"                               \
+            : "=a"(q32), "=d"(r32)                   \
+            : "r"(d32),                              \
+             "0"(n_lo), "1"(n_hi))
+
+#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
+        asm("shrl   $1,%2       ;"      \
+            "rcrl   $1,%3;"             \
+            : "=r"(n_hi), "=r"(n_lo)    \
+            : "0"(n_hi), "1"(n_lo))
+
+#endif
+
+#endif /* _ASM_X86_ACENV_H */