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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/x86/include/asm/acenv.h
Initial import
Diffstat (limited to 'arch/x86/include/asm/acenv.h')
-rw-r--r--arch/x86/include/asm/acenv.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/x86/include/asm/acenv.h b/arch/x86/include/asm/acenv.h
new file mode 100644
index 000000000..1b010a859
--- /dev/null
+++ b/arch/x86/include/asm/acenv.h
@@ -0,0 +1,45 @@
+/*
+ * 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()
+
+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 /* _ASM_X86_ACENV_H */