summaryrefslogtreecommitdiffstats
path: root/include/asm-arm/domain.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-arm/domain.h')
-rw-r--r--include/asm-arm/domain.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/include/asm-arm/domain.h b/include/asm-arm/domain.h
new file mode 100644
index 000000000000..da1d960387d9
--- /dev/null
+++ b/include/asm-arm/domain.h
@@ -0,0 +1,52 @@
+/*
+ * linux/include/asm-arm/domain.h
+ *
+ * Copyright (C) 1999 Russell King.
+ *
+ * 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_PROC_DOMAIN_H
+#define __ASM_PROC_DOMAIN_H
+
+/*
+ * Domain numbers
+ *
+ * DOMAIN_IO - domain 2 includes all IO only
+ * DOMAIN_USER - domain 1 includes all user memory only
+ * DOMAIN_KERNEL - domain 0 includes all kernel memory only
+ */
+#define DOMAIN_KERNEL 0
+#define DOMAIN_TABLE 0
+#define DOMAIN_USER 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)))
+
+#ifndef __ASSEMBLY__
+#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 { \
+ struct thread_info *thread = current_thread_info(); \
+ unsigned int domain = thread->cpu_domain; \
+ domain &= ~domain_val(dom, DOMAIN_MANAGER); \
+ thread->cpu_domain = domain | domain_val(dom, type); \
+ set_domain(thread->cpu_domain); \
+ } while (0)
+
+#endif
+#endif /* !__ASSEMBLY__ */