---

yaml
---
r: 57124
b: refs/heads/master
c: 2ccdd1e
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 919a84292070949691346adaf3dfba642f12329e
+refs/heads/master: 2ccdd1e77da52ad494e9af46bf272d816830cb28

trunk/arch/arm/mm/Kconfig

@@ -379,7 +379,7 @@ config CPU_V7
 	select CPU_CP15_MMU
 	select CPU_HAS_ASID
 	select CPU_COPY_V6 if MMU
-	select CPU_TLB_V6 if MMU
+	select CPU_TLB_V7 if MMU
 
 # Figure out what processor architecture version we should be using.
 # This defines the compiler instruction set which depends on the machine type.
@@ -498,6 +498,9 @@ config CPU_TLB_V4WBI
 config CPU_TLB_V6
 	bool
 
+config CPU_TLB_V7
+	bool
+
 endif
 
 config CPU_HAS_ASID

trunk/arch/arm/mm/Makefile

@@ -46,6 +46,7 @@ obj-$(CONFIG_CPU_TLB_V4WT)	+= tlb-v4.o
 obj-$(CONFIG_CPU_TLB_V4WB)	+= tlb-v4wb.o
 obj-$(CONFIG_CPU_TLB_V4WBI)	+= tlb-v4wbi.o
 obj-$(CONFIG_CPU_TLB_V6)	+= tlb-v6.o
+obj-$(CONFIG_CPU_TLB_V7)	+= tlb-v7.o
 
 obj-$(CONFIG_CPU_ARM610)	+= proc-arm6_7.o
 obj-$(CONFIG_CPU_ARM710)	+= proc-arm6_7.o

trunk/arch/arm/mm/proc-v7.S

@@ -256,7 +256,7 @@ __v7_proc_info:
 	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
 	.long	cpu_v7_name
 	.long	v7_processor_functions
-	.long	v6wbi_tlb_fns
+	.long	v7wbi_tlb_fns
 	.long	v6_user_fns
 	.long	v7_cache_fns
 	.size	__v7_proc_info, . - __v7_proc_info

trunk/arch/arm/mm/tlb-v7.S

@@ -0,0 +1,88 @@
+/*
+ *  linux/arch/arm/mm/tlb-v7.S
+ *
+ *  Copyright (C) 1997-2002 Russell King
+ *  Modified for ARMv7 by Catalin Marinas
+ *
+ * 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.
+ *
+ *  ARM architecture version 6 TLB handling functions.
+ *  These assume a split I/D TLB.
+ */
+#include <linux/linkage.h>
+#include <asm/asm-offsets.h>
+#include <asm/page.h>
+#include <asm/tlbflush.h>
+#include "proc-macros.S"
+
+/*
+ *	v7wbi_flush_user_tlb_range(start, end, vma)
+ *
+ *	Invalidate a range of TLB entries in the specified address space.
+ *
+ *	- start - start address (may not be aligned)
+ *	- end   - end address (exclusive, may not be aligned)
+ *	- vma   - vma_struct describing address range
+ *
+ *	It is assumed that:
+ *	- the "Invalidate single entry" instruction will invalidate
+ *	  both the I and the D TLBs on Harvard-style TLBs
+ */
+ENTRY(v7wbi_flush_user_tlb_range)
+	vma_vm_mm r3, r2			@ get vma->vm_mm
+	mmid	r3, r3				@ get vm_mm->context.id
+	dsb
+	mov	r0, r0, lsr #PAGE_SHIFT		@ align address
+	mov	r1, r1, lsr #PAGE_SHIFT
+	asid	r3, r3				@ mask ASID
+	orr	r0, r3, r0, lsl #PAGE_SHIFT	@ Create initial MVA
+	mov	r1, r1, lsl #PAGE_SHIFT
+	vma_vm_flags r2, r2			@ get vma->vm_flags
+1:
+	mcr	p15, 0, r0, c8, c6, 1		@ TLB invalidate D MVA (was 1)
+	tst	r2, #VM_EXEC			@ Executable area ?
+	mcrne	p15, 0, r0, c8, c5, 1		@ TLB invalidate I MVA (was 1)
+	add	r0, r0, #PAGE_SZ
+	cmp	r0, r1
+	blo	1b
+	mov	ip, #0
+	mcr	p15, 0, ip, c7, c5, 6		@ flush BTAC/BTB
+	dsb
+	mov	pc, lr
+
+/*
+ *	v7wbi_flush_kern_tlb_range(start,end)
+ *
+ *	Invalidate a range of kernel TLB entries
+ *
+ *	- start - start address (may not be aligned)
+ *	- end   - end address (exclusive, may not be aligned)
+ */
+ENTRY(v7wbi_flush_kern_tlb_range)
+	dsb
+	mov	r0, r0, lsr #PAGE_SHIFT		@ align address
+	mov	r1, r1, lsr #PAGE_SHIFT
+	mov	r0, r0, lsl #PAGE_SHIFT
+	mov	r1, r1, lsl #PAGE_SHIFT
+1:
+	mcr	p15, 0, r0, c8, c6, 1		@ TLB invalidate D MVA
+	mcr	p15, 0, r0, c8, c5, 1		@ TLB invalidate I MVA
+	add	r0, r0, #PAGE_SZ
+	cmp	r0, r1
+	blo	1b
+	mov	r2, #0
+	mcr	p15, 0, r2, c7, c5, 6		@ flush BTAC/BTB
+	dsb
+	isb
+	mov	pc, lr
+
+	.section ".text.init", #alloc, #execinstr
+
+	.type	v7wbi_tlb_fns, #object
+ENTRY(v7wbi_tlb_fns)
+	.long	v7wbi_flush_user_tlb_range
+	.long	v7wbi_flush_kern_tlb_range
+	.long	v6wbi_tlb_flags
+	.size	v7wbi_tlb_fns, . - v7wbi_tlb_fns

trunk/include/asm-arm/tlbflush.h

@@ -138,6 +138,19 @@
 # define v6wbi_always_flags	(-1UL)
 #endif
 
+#ifdef CONFIG_CPU_TLB_V7
+# define v7wbi_possible_flags	v6wbi_tlb_flags
+# define v7wbi_always_flags	v6wbi_tlb_flags
+# ifdef _TLB
+#  define MULTI_TLB 1
+# else
+#  define _TLB v7wbi
+# endif
+#else
+# define v7wbi_possible_flags	0
+# define v7wbi_always_flags	(-1UL)
+#endif
+
 #ifndef _TLB
 #error Unknown TLB model
 #endif