openwrt/target/linux/layerscape/patches-4.4/3011-arm-add-new-non-shareable-ioremap.patch

From 707627a28924320a7a36bdb8b02c05651c0c384d Mon Sep 17 00:00:00 2001
From: Pan Jiafei <Jiafei.Pan@nxp.com>
Date: Fri, 8 Jul 2016 11:16:13 +0800
Subject: [PATCH 11/70] arm: add new non-shareable ioremap

commit 17d7448eef0fa57a0899e6a864d875e7a9082561
[modify ioremap_cache_ns according to Linux v4.4.7]

Signed-off-by: Pan Jiafei <Jiafei.Pan@nxp.com>
Integrated-by: Zhao Qiang <qiang.zhao@nxp.com>
---
 arch/arm/include/asm/io.h       |    4 ++++
 arch/arm/include/asm/mach/map.h |    4 ++--
 arch/arm/mm/ioremap.c           |    7 +++++++
 arch/arm/mm/mmu.c               |    9 +++++++++
 4 files changed, 22 insertions(+), 2 deletions(-)

--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -129,6 +129,7 @@ static inline u32 __raw_readl(const vola
 #define MT_DEVICE_NONSHARED	1
 #define MT_DEVICE_CACHED	2
 #define MT_DEVICE_WC		3
+#define MT_MEMORY_RW_NS		4
 /*
  * types 4 onwards can be found in asm/mach/map.h and are undefined
  * for ioremap
@@ -399,6 +400,9 @@ void __iomem *ioremap_wc(resource_size_t
 #define ioremap_wc ioremap_wc
 #define ioremap_wt ioremap_wc
 
+void __iomem *ioremap_cache_ns(resource_size_t res_cookie, size_t size);
+#define ioremap_cache_ns ioremap_cache_ns
+
 void iounmap(volatile void __iomem *iomem_cookie);
 #define iounmap iounmap
 
--- a/arch/arm/include/asm/mach/map.h
+++ b/arch/arm/include/asm/mach/map.h
@@ -21,9 +21,9 @@ struct map_desc {
 	unsigned int type;
 };
 
-/* types 0-3 are defined in asm/io.h */
+/* types 0-4 are defined in asm/io.h */
 enum {
-	MT_UNCACHED = 4,
+	MT_UNCACHED = 5,
 	MT_CACHECLEAN,
 	MT_MINICLEAN,
 	MT_LOW_VECTORS,
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -394,6 +394,13 @@ void __iomem *ioremap_wc(resource_size_t
 }
 EXPORT_SYMBOL(ioremap_wc);
 
+void __iomem *ioremap_cache_ns(resource_size_t res_cookie, size_t size)
+{
+	return arch_ioremap_caller(res_cookie, size, MT_MEMORY_RW_NS,
+				   __builtin_return_address(0));
+}
+EXPORT_SYMBOL(ioremap_cache_ns);
+
 /*
  * Remap an arbitrary physical address space into the kernel virtual
  * address space as memory. Needed when the kernel wants to execute
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -313,6 +313,13 @@ static struct mem_type mem_types[] = {
 		.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
 		.domain    = DOMAIN_KERNEL,
 	},
+	[MT_MEMORY_RW_NS] = {
+		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
+			     L_PTE_XN,
+		.prot_l1   = PMD_TYPE_TABLE,
+		.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_XN,
+		.domain    = DOMAIN_KERNEL,
+	},
 	[MT_ROM] = {
 		.prot_sect = PMD_TYPE_SECT,
 		.domain    = DOMAIN_KERNEL,
@@ -644,6 +651,7 @@ static void __init build_mem_type_table(
 	}
 	kern_pgprot |= PTE_EXT_AF;
 	vecs_pgprot |= PTE_EXT_AF;
+	mem_types[MT_MEMORY_RW_NS].prot_pte |= PTE_EXT_AF | cp->pte;
 
 	/*
 	 * Set PXN for user mappings
@@ -672,6 +680,7 @@ static void __init build_mem_type_table(
 	mem_types[MT_MEMORY_RWX].prot_pte |= kern_pgprot;
 	mem_types[MT_MEMORY_RW].prot_sect |= ecc_mask | cp->pmd;
 	mem_types[MT_MEMORY_RW].prot_pte |= kern_pgprot;
+	mem_types[MT_MEMORY_RW_NS].prot_sect |= ecc_mask | cp->pmd;
 	mem_types[MT_MEMORY_DMA_READY].prot_pte |= kern_pgprot;
 	mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= ecc_mask;
 	mem_types[MT_ROM].prot_sect |= cp->pmd;