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authorRob Herring <rob.herring@calxeda.com>2012-08-21 12:26:24 +0200
committerMarek Szyprowski <m.szyprowski@samsung.com>2012-10-02 08:58:07 +0200
commit48aa820f1e3824e46dde6251db98e5961abf605d (patch)
tree20cac9fd267b7e8bc43e47165c631bb6cadef15b /arch/arm/mm/mmu.c
parent0fa478df444f5837336d7e2fd0b41643c8d704c2 (diff)
ARM: kill off arch_is_coherent
With ixp2xxx removed, there are no platforms that define arch_is_coherent, so the last occurrences of arch_is_coherent can be removed. Any new platform with coherent i/o should use coherent dma mapping functions. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Diffstat (limited to 'arch/arm/mm/mmu.c')
-rw-r--r--arch/arm/mm/mmu.c17
1 files changed, 3 insertions, 14 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index c2fa21d0103..8fd039929ae 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -216,7 +216,7 @@ static struct mem_type mem_types[] = {
.prot_l1 = PMD_TYPE_TABLE,
.prot_sect = PROT_SECT_DEVICE | PMD_SECT_WB,
.domain = DOMAIN_IO,
- },
+ },
[MT_DEVICE_WC] = { /* ioremap_wc */
.prot_pte = PROT_PTE_DEVICE | L_PTE_MT_DEV_WC,
.prot_l1 = PMD_TYPE_TABLE,
@@ -422,17 +422,6 @@ static void __init build_mem_type_table(void)
vecs_pgprot = kern_pgprot = user_pgprot = cp->pte;
/*
- * Enable CPU-specific coherency if supported.
- * (Only available on XSC3 at the moment.)
- */
- if (arch_is_coherent() && cpu_is_xsc3()) {
- mem_types[MT_MEMORY].prot_sect |= PMD_SECT_S;
- mem_types[MT_MEMORY].prot_pte |= L_PTE_SHARED;
- mem_types[MT_MEMORY_DMA_READY].prot_pte |= L_PTE_SHARED;
- mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_S;
- mem_types[MT_MEMORY_NONCACHED].prot_pte |= L_PTE_SHARED;
- }
- /*
* ARMv6 and above have extended page tables.
*/
if (cpu_arch >= CPU_ARCH_ARMv6 && (cr & CR_XP)) {
@@ -777,8 +766,8 @@ void __init iotable_init(struct map_desc *io_desc, int nr)
create_mapping(md);
vm->addr = (void *)(md->virtual & PAGE_MASK);
vm->size = PAGE_ALIGN(md->length + (md->virtual & ~PAGE_MASK));
- vm->phys_addr = __pfn_to_phys(md->pfn);
- vm->flags = VM_IOREMAP | VM_ARM_STATIC_MAPPING;
+ vm->phys_addr = __pfn_to_phys(md->pfn);
+ vm->flags = VM_IOREMAP | VM_ARM_STATIC_MAPPING;
vm->flags |= VM_ARM_MTYPE(md->type);
vm->caller = iotable_init;
vm_area_add_early(vm++);