patch-2.2.18 linux/include/asm-arm/proc-armv/domain.h

• Lines: 47
• Date: Fri Sep 15 23:32:34 2000
• Orig file: v2.2.17/include/asm-arm/proc-armv/domain.h
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/include/asm-arm/proc-armv/domain.h linux/include/asm-arm/proc-armv/domain.h
@@ -0,0 +1,46 @@
+/*
+ * linux/include/asm-arm/proc-armv/domain.h
+ *
+ * Copyright (C) 1999 Russell King.
+ */
+#ifndef __ASM_PROC_DOMAIN_H
+#define __ASM_PROC_DOMAIN_H
+
+/*
+ * Domain numbers
+ *
+ *  DOMAIN_IO     - domain 2 includes all IO only
+ *  DOMAIN_KERNEL - domain 1 includes all kernel memory only
+ *  DOMAIN_USER   - domain 0 includes all user memory only
+ */
+#define DOMAIN_USER	0
+#define DOMAIN_KERNEL	1
+#define DOMAIN_TABLE	1
+#define DOMAIN_IO	2
+
+/*
+ * Domain types
+ */
+#define DOMAIN_NOACCESS	0
+#define DOMAIN_CLIENT	1
+#define DOMAIN_MANAGER	3
+
+#define domain_val(dom,type)	((type) << 2*(dom))
+
+#define set_domain(x)					\
+	do {						\
+	__asm__ __volatile__(				\
+	"mcr	p15, 0, %0, c3, c0	@ set domain"	\
+	  : : "r" (x));					\
+	} while (0)
+
+#define modify_domain(dom,type)				\
+	do {						\
+	unsigned int domain = current->tss.domain;	\
+	domain &= ~domain_val(dom, DOMAIN_MANAGER);	\
+	domain |= domain_val(dom, type);		\
+	current->tss.domain = domain;			\
+	set_domain(current->tss.domain);		\
+	} while (0)
+
+#endif