Merge branch 'linux-2.6'

1 files changed, 34 insertions, 46 deletions

diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 0ac615c0f79..d6167ad4e01 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -32,6 +32,9 @@
 #include <asm/tlbflush.h>
 #include <asm/sizes.h>
 
+#include <asm/mach/map.h>
+#include "mm.h"
+
 /*
  * Used by ioremap() and iounmap() code to mark (super)section-mapped
  * I/O regions in vm_struct->flags field.
@@ -39,8 +42,9 @@
 #define VM_ARM_SECTION_MAPPING	0x80000000
 
 static int remap_area_pte(pmd_t *pmd, unsigned long addr, unsigned long end,
-			  unsigned long phys_addr, pgprot_t prot)
+			  unsigned long phys_addr, const struct mem_type *type)
 {
+	pgprot_t prot = __pgprot(type->prot_pte);
 	pte_t *pte;
 
 	pte = pte_alloc_kernel(pmd, addr);
@@ -51,7 +55,8 @@ static int remap_area_pte(pmd_t *pmd, unsigned long addr, unsigned long end,
 		if (!pte_none(*pte))
 			goto bad;
 
-		set_pte_ext(pte, pfn_pte(phys_addr >> PAGE_SHIFT, prot), 0);
+		set_pte_ext(pte, pfn_pte(phys_addr >> PAGE_SHIFT, prot),
+			    type->prot_pte_ext);
 		phys_addr += PAGE_SIZE;
 	} while (pte++, addr += PAGE_SIZE, addr != end);
 	return 0;
@@ -63,7 +68,7 @@ static int remap_area_pte(pmd_t *pmd, unsigned long addr, unsigned long end,
 
 static inline int remap_area_pmd(pgd_t *pgd, unsigned long addr,
 				 unsigned long end, unsigned long phys_addr,
-				 pgprot_t prot)
+				 const struct mem_type *type)
 {
 	unsigned long next;
 	pmd_t *pmd;
@@ -75,7 +80,7 @@ static inline int remap_area_pmd(pgd_t *pgd, unsigned long addr,
 
 	do {
 		next = pmd_addr_end(addr, end);
-		ret = remap_area_pte(pmd, addr, next, phys_addr, prot);
+		ret = remap_area_pte(pmd, addr, next, phys_addr, type);
 		if (ret)
 			return ret;
 		phys_addr += next - addr;
@@ -84,13 +89,11 @@ static inline int remap_area_pmd(pgd_t *pgd, unsigned long addr,
 }
 
 static int remap_area_pages(unsigned long start, unsigned long pfn,
-			    unsigned long size, unsigned long flags)
+			    size_t size, const struct mem_type *type)
 {
 	unsigned long addr = start;
 	unsigned long next, end = start + size;
 	unsigned long phys_addr = __pfn_to_phys(pfn);
-	pgprot_t prot = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG |
-				 L_PTE_DIRTY | L_PTE_WRITE | flags);
 	pgd_t *pgd;
 	int err = 0;
 
@@ -98,7 +101,7 @@ static int remap_area_pages(unsigned long start, unsigned long pfn,
 	pgd = pgd_offset_k(addr);
 	do {
 		next = pgd_addr_end(addr, end);
-		err = remap_area_pmd(pgd, addr, next, phys_addr, prot);
+		err = remap_area_pmd(pgd, addr, next, phys_addr, type);
 		if (err)
 			break;
 		phys_addr += next - addr;
@@ -178,9 +181,9 @@ static void unmap_area_sections(unsigned long virt, unsigned long size)
 
 static int
 remap_area_sections(unsigned long virt, unsigned long pfn,
-		    unsigned long size, unsigned long flags)
+		    size_t size, const struct mem_type *type)
 {
-	unsigned long prot, addr = virt, end = virt + size;
+	unsigned long addr = virt, end = virt + size;
 	pgd_t *pgd;
 
 	/*
@@ -189,23 +192,13 @@ remap_area_sections(unsigned long virt, unsigned long pfn,
 	 */
 	unmap_area_sections(virt, size);
 
-	prot = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_DOMAIN(DOMAIN_IO) |
-	       (flags & (L_PTE_CACHEABLE | L_PTE_BUFFERABLE));
-
-	/*
-	 * ARMv6 and above need XN set to prevent speculative prefetches
-	 * hitting IO.
-	 */
-	if (cpu_architecture() >= CPU_ARCH_ARMv6)
-		prot |= PMD_SECT_XN;
-
 	pgd = pgd_offset_k(addr);
 	do {
 		pmd_t *pmd = pmd_offset(pgd, addr);
 
-		pmd[0] = __pmd(__pfn_to_phys(pfn) | prot);
+		pmd[0] = __pmd(__pfn_to_phys(pfn) | type->prot_sect);
 		pfn += SZ_1M >> PAGE_SHIFT;
-		pmd[1] = __pmd(__pfn_to_phys(pfn) | prot);
+		pmd[1] = __pmd(__pfn_to_phys(pfn) | type->prot_sect);
 		pfn += SZ_1M >> PAGE_SHIFT;
 		flush_pmd_entry(pmd);
 
@@ -218,9 +211,9 @@ remap_area_sections(unsigned long virt, unsigned long pfn,
 
 static int
 remap_area_supersections(unsigned long virt, unsigned long pfn,
-			 unsigned long size, unsigned long flags)
+			 size_t size, const struct mem_type *type)
 {
-	unsigned long prot, addr = virt, end = virt + size;
+	unsigned long addr = virt, end = virt + size;
 	pgd_t *pgd;
 
 	/*
@@ -229,22 +222,12 @@ remap_area_supersections(unsigned long virt, unsigned long pfn,
 	 */
 	unmap_area_sections(virt, size);
 
-	prot = PMD_TYPE_SECT | PMD_SECT_SUPER | PMD_SECT_AP_WRITE |
-			PMD_DOMAIN(DOMAIN_IO) |
-			(flags & (L_PTE_CACHEABLE | L_PTE_BUFFERABLE));
-
-	/*
-	 * ARMv6 and above need XN set to prevent speculative prefetches
-	 * hitting IO.
-	 */
-	if (cpu_architecture() >= CPU_ARCH_ARMv6)
-		prot |= PMD_SECT_XN;
-
 	pgd = pgd_offset_k(virt);
 	do {
 		unsigned long super_pmd_val, i;
 
-		super_pmd_val = __pfn_to_phys(pfn) | prot;
+		super_pmd_val = __pfn_to_phys(pfn) | type->prot_sect |
+				PMD_SECT_SUPER;
 		super_pmd_val |= ((pfn >> (32 - PAGE_SHIFT)) & 0xf) << 20;
 
 		for (i = 0; i < 8; i++) {
@@ -279,9 +262,10 @@ remap_area_supersections(unsigned long virt, unsigned long pfn,
  * mapping.  See include/asm-arm/proc-armv/pgtable.h for more information.
  */
 void __iomem *
-__ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
-	      unsigned long flags)
+__arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
+		  unsigned int mtype)
 {
+	const struct mem_type *type;
 	int err;
 	unsigned long addr;
  	struct vm_struct * area;
@@ -292,6 +276,10 @@ __ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
 	if (pfn >= 0x100000 && (__pfn_to_phys(pfn) & ~SUPERSECTION_MASK))
 		return NULL;
 
+	type = get_mem_type(mtype);
+	if (!type)
+		return NULL;
+
 	size = PAGE_ALIGN(size);
 
  	area = get_vm_area(size, VM_IOREMAP);
@@ -302,16 +290,16 @@ __ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
 #ifndef CONFIG_SMP
 	if (DOMAIN_IO == 0 &&
 	    (((cpu_architecture() >= CPU_ARCH_ARMv6) && (get_cr() & CR_XP)) ||
-	       cpu_is_xsc3()) &&
+	       cpu_is_xsc3()) && pfn >= 0x100000 &&
 	       !((__pfn_to_phys(pfn) | size | addr) & ~SUPERSECTION_MASK)) {
 		area->flags |= VM_ARM_SECTION_MAPPING;
-		err = remap_area_supersections(addr, pfn, size, flags);
+		err = remap_area_supersections(addr, pfn, size, type);
 	} else if (!((__pfn_to_phys(pfn) | size | addr) & ~PMD_MASK)) {
 		area->flags |= VM_ARM_SECTION_MAPPING;
-		err = remap_area_sections(addr, pfn, size, flags);
+		err = remap_area_sections(addr, pfn, size, type);
 	} else
 #endif
-		err = remap_area_pages(addr, pfn, size, flags);
+		err = remap_area_pages(addr, pfn, size, type);
 
 	if (err) {
  		vunmap((void *)addr);
@@ -321,10 +309,10 @@ __ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
 	flush_cache_vmap(addr, addr + size);
 	return (void __iomem *) (offset + addr);
 }
-EXPORT_SYMBOL(__ioremap_pfn);
+EXPORT_SYMBOL(__arm_ioremap_pfn);
 
 void __iomem *
-__ioremap(unsigned long phys_addr, size_t size, unsigned long flags)
+__arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
 {
 	unsigned long last_addr;
  	unsigned long offset = phys_addr & ~PAGE_MASK;
@@ -342,9 +330,9 @@ __ioremap(unsigned long phys_addr, size_t size, unsigned long flags)
 	 */
 	size = PAGE_ALIGN(last_addr + 1) - phys_addr;
 
- 	return __ioremap_pfn(pfn, offset, size, flags);
+ 	return __arm_ioremap_pfn(pfn, offset, size, mtype);
 }
-EXPORT_SYMBOL(__ioremap);
+EXPORT_SYMBOL(__arm_ioremap);
 
 void __iounmap(volatile void __iomem *addr)
 {