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Diffstat (limited to 'arch/arm/include/asm/domain.h')
-rw-r--r--arch/arm/include/asm/domain.h53
1 files changed, 43 insertions, 10 deletions
diff --git a/arch/arm/include/asm/domain.h b/arch/arm/include/asm/domain.h
index 6ddbe446425e..e878129f2fee 100644
--- a/arch/arm/include/asm/domain.h
+++ b/arch/arm/include/asm/domain.h
@@ -34,15 +34,14 @@
*/
#ifndef CONFIG_IO_36
#define DOMAIN_KERNEL 0
-#define DOMAIN_TABLE 0
#define DOMAIN_USER 1
#define DOMAIN_IO 2
#else
#define DOMAIN_KERNEL 2
-#define DOMAIN_TABLE 2
#define DOMAIN_USER 1
#define DOMAIN_IO 0
#endif
+#define DOMAIN_VECTORS 3
/*
* Domain types
@@ -55,11 +54,46 @@
#define DOMAIN_MANAGER 1
#endif
-#define domain_val(dom,type) ((type) << (2*(dom)))
+#define domain_mask(dom) ((3) << (2 * (dom)))
+#define domain_val(dom,type) ((type) << (2 * (dom)))
+
+#ifdef CONFIG_CPU_SW_DOMAIN_PAN
+#define DACR_INIT \
+ (domain_val(DOMAIN_USER, DOMAIN_NOACCESS) | \
+ domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \
+ domain_val(DOMAIN_IO, DOMAIN_CLIENT) | \
+ domain_val(DOMAIN_VECTORS, DOMAIN_CLIENT))
+#else
+#define DACR_INIT \
+ (domain_val(DOMAIN_USER, DOMAIN_CLIENT) | \
+ domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \
+ domain_val(DOMAIN_IO, DOMAIN_CLIENT) | \
+ domain_val(DOMAIN_VECTORS, DOMAIN_CLIENT))
+#endif
+
+#define __DACR_DEFAULT \
+ domain_val(DOMAIN_KERNEL, DOMAIN_CLIENT) | \
+ domain_val(DOMAIN_IO, DOMAIN_CLIENT) | \
+ domain_val(DOMAIN_VECTORS, DOMAIN_CLIENT)
+
+#define DACR_UACCESS_DISABLE \
+ (__DACR_DEFAULT | domain_val(DOMAIN_USER, DOMAIN_NOACCESS))
+#define DACR_UACCESS_ENABLE \
+ (__DACR_DEFAULT | domain_val(DOMAIN_USER, DOMAIN_CLIENT))
#ifndef __ASSEMBLY__
-#ifdef CONFIG_CPU_USE_DOMAINS
+static inline unsigned int get_domain(void)
+{
+ unsigned int domain;
+
+ asm(
+ "mrc p15, 0, %0, c3, c0 @ get domain"
+ : "=r" (domain));
+
+ return domain;
+}
+
static inline void set_domain(unsigned val)
{
asm volatile(
@@ -68,17 +102,16 @@ static inline void set_domain(unsigned val)
isb();
}
+#ifdef CONFIG_CPU_USE_DOMAINS
#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); \
+ unsigned int domain = get_domain(); \
+ domain &= ~domain_mask(dom); \
+ domain = domain | domain_val(dom, type); \
+ set_domain(domain); \
} while (0)
#else
-static inline void set_domain(unsigned val) { }
static inline void modify_domain(unsigned dom, unsigned type) { }
#endif