diff options
Diffstat (limited to 'arch/arm/mm/mmu.c')
| -rw-r--r-- | arch/arm/mm/mmu.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 4fa9c246ae93..bb80555edac9 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -273,6 +273,18 @@ static struct mem_type mem_types[] = { .prot_l1 = PMD_TYPE_TABLE, .domain = DOMAIN_KERNEL, }, +#ifdef CONFIG_NON_ALIASED_COHERENT_MEM + [MT_DMA_COHERENT] = { + .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | + PMD_SECT_S, + .domain = DOMAIN_IO, + }, + [MT_WC_COHERENT] = { + .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | + PMD_SECT_S, + .domain = DOMAIN_IO, + }, +#endif }; const struct mem_type *get_mem_type(unsigned int type) @@ -353,6 +365,9 @@ static void __init build_mem_type_table(void) mem_types[MT_DEVICE_NONSHARED].prot_sect |= PMD_SECT_XN; mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_XN; mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_XN; +#ifdef CONFIG_NON_ALIASED_COHERENT_MEM + mem_types[MT_DMA_COHERENT].prot_sect |= PMD_SECT_XN; +#endif } if (cpu_arch >= CPU_ARCH_ARMv7 && (cr & CR_TRE)) { /* @@ -457,13 +472,30 @@ static void __init build_mem_type_table(void) /* Non-cacheable Normal is XCB = 001 */ mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_BUFFERED; +#ifdef CONFIG_NON_ALIASED_COHERENT_MEM + mem_types[MT_WC_COHERENT].prot_sect |= + PMD_SECT_BUFFERED; + mem_types[MT_DMA_COHERENT].prot_sect |= + PMD_SECT_BUFFERED; +#endif } else { /* For both ARMv6 and non-TEX-remapping ARMv7 */ mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_TEX(1); +#ifdef CONFIG_NON_ALIASED_COHERENT_MEM + mem_types[MT_WC_COHERENT].prot_sect |= + PMD_SECT_TEX(1); +#ifdef CONFIG_ARM_DMA_MEM_BUFFERABLE + mem_types[MT_DMA_COHERENT].prot_sect |= + PMD_SECT_TEX(1); +#endif +#endif } } else { mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE; +#ifdef CONFIG_NON_ALIASED_COHERENT_MEM + mem_types[MT_WC_COHERENT].prot_sect |= PMD_SECT_BUFFERED; +#endif } for (i = 0; i < 16; i++) { @@ -986,6 +1018,10 @@ static void __init devicemaps_init(struct machine_desc *mdesc) create_mapping(&map); } +#ifdef CONFIG_NON_ALIASED_COHERENT_MEM + dma_coherent_mapping(); +#endif + /* * Ask the machine support to map in the statically mapped devices. */ |