ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/arm/include/asm/domain.h b/marvell/linux/arch/arm/include/asm/domain.h
new file mode 100644
index 0000000..f1d0a78
--- /dev/null
+++ b/marvell/linux/arch/arm/include/asm/domain.h
@@ -0,0 +1,154 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * arch/arm/include/asm/domain.h
+ *
+ * Copyright (C) 1999 Russell King.
+ */
+#ifndef __ASM_PROC_DOMAIN_H
+#define __ASM_PROC_DOMAIN_H
+
+#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
+#include <asm/thread_info.h>
+#endif
+
+/*
+ * 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
+ *
+ * The domain numbering depends on whether we support 36 physical
+ * address for I/O or not. Addresses above the 32 bit boundary can
+ * only be mapped using supersections and supersections can only
+ * be set for domain 0. We could just default to DOMAIN_IO as zero,
+ * but there may be systems with supersection support and no 36-bit
+ * addressing. In such cases, we want to map system memory with
+ * supersections to reduce TLB misses and footprint.
+ *
+ * 36-bit addressing and supersections are only available on
+ * CPUs based on ARMv6+ or the Intel XSC3 core.
+ */
+#ifndef CONFIG_IO_36
+#define DOMAIN_KERNEL 0
+#define DOMAIN_USER 1
+#define DOMAIN_IO 2
+#else
+#define DOMAIN_KERNEL 2
+#define DOMAIN_USER 1
+#define DOMAIN_IO 0
+#endif
+#define DOMAIN_VECTORS 3
+
+/*
+ * Domain types
+ */
+#define DOMAIN_NOACCESS 0
+#define DOMAIN_CLIENT 1
+#ifdef CONFIG_CPU_USE_DOMAINS
+#define DOMAIN_MANAGER 3
+#else
+#define DOMAIN_MANAGER 1
+#endif
+
+#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_CP15_MMU
+static __always_inline unsigned int get_domain(void)
+{
+ unsigned int domain;
+
+ asm(
+ "mrc p15, 0, %0, c3, c0 @ get domain"
+ : "=r" (domain)
+ : "m" (current_thread_info()->cpu_domain));
+
+ return domain;
+}
+
+static __always_inline void set_domain(unsigned int val)
+{
+ asm volatile(
+ "mcr p15, 0, %0, c3, c0 @ set domain"
+ : : "r" (val) : "memory");
+ isb();
+}
+#else
+static __always_inline unsigned int get_domain(void)
+{
+ return 0;
+}
+
+static __always_inline void set_domain(unsigned int val)
+{
+}
+#endif
+
+#ifdef CONFIG_CPU_USE_DOMAINS
+#define modify_domain(dom,type) \
+ do { \
+ unsigned int domain = get_domain(); \
+ domain &= ~domain_mask(dom); \
+ domain = domain | domain_val(dom, type); \
+ set_domain(domain); \
+ } while (0)
+
+#else
+static inline void modify_domain(unsigned dom, unsigned type) { }
+#endif
+
+/*
+ * Generate the T (user) versions of the LDR/STR and related
+ * instructions (inline assembly)
+ */
+#ifdef CONFIG_CPU_USE_DOMAINS
+#define TUSER(instr) TUSERCOND(instr, )
+#define TUSERCOND(instr, cond) #instr "t" #cond
+#else
+#define TUSER(instr) TUSERCOND(instr, )
+#define TUSERCOND(instr, cond) #instr #cond
+#endif
+
+#else /* __ASSEMBLY__ */
+
+/*
+ * Generate the T (user) versions of the LDR/STR and related
+ * instructions
+ */
+#ifdef CONFIG_CPU_USE_DOMAINS
+#define TUSER(instr) instr ## t
+#else
+#define TUSER(instr) instr
+#endif
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* !__ASM_PROC_DOMAIN_H */