patch-2.4.19 linux-2.4.19/include/asm-mips/sibyte/64bit.h

• Lines: 78
• Date: Fri Aug 2 17:39:45 2002
• Orig file: linux-2.4.18/include/asm-mips/sibyte/64bit.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/include/asm-mips/sibyte/64bit.h linux-2.4.19/include/asm-mips/sibyte/64bit.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2000, 2001 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef _SB1_64BIT_H
+#define _SB1_64BIT_H
+
+#include <linux/types.h>
+#include <asm/system.h>
+
+/*
+ * This is annoying...we can't actually write the 64-bit IO register properly
+ * without having access to 64-bit registers...  which doesn't work by default
+ * in o32 format...grrr...
+*/
+
+static inline void out64(u64 val, unsigned long addr)
+{
+	u32 low, high, tmp;
+	unsigned long flags;
+
+	high = val >> 32;
+	low = val & 0xffffffff;
+	__save_and_cli(flags);
+	__asm__ __volatile__ (
+		".set push\t\t\t# out64n"
+		".set noreorder\n"
+		".set noat\n"
+		".set mips4\n"
+		"   dsll32 %0, %2, 0   \n"
+		"   dsll32 $1, %1, 0   \n"
+		"   dsrl32 %0, %0, 0   \n"
+		"   or     $1, $1, %0  \n"
+		"   sd $1, (%3)\n"
+		".set pop\n"
+		: "=&r" (tmp)
+		: "r" (high), "r" (low), "r" (addr));
+	__restore_flags(flags);
+}
+
+static inline u64 in64(unsigned long addr)
+{
+	unsigned long flags;
+	u32 low, high;
+
+	__save_and_cli(flags);
+	__asm__ __volatile__ (
+		".set push\t\t\t# in64\n"
+		".set noreorder\n"
+		".set noat     \n"
+		".set mips4    \n"
+		"  ld     %1, (%2)\n"
+		"  dsra32 %0, %1, 0\n"
+		"  sll    %1, %1, 0\n"
+		".set pop\n"
+		: "=r" (high), "=r" (low)
+		: "r" (addr));
+	__restore_flags(flags);
+
+	return (((u64)high) << 32) | low;
+}
+
+#endif /* _SB1_64BIT_H */