diff options
| author | Fenkart/Bostandzhyan <andreas.fenkart@streamunlimited.com> | 2010-02-07 21:46:33 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-02-15 21:40:32 +0000 |
| commit | a7bd08c82e4f74387a39eeebb942712f23967420 (patch) | |
| tree | 4637930167da99522bcff48e4877bdfa961f13c1 | |
| parent | db9ef1af4879c121c354ad2f653f185f1d50fd89 (diff) | |
| download | lwn-a7bd08c82e4f74387a39eeebb942712f23967420.tar.gz lwn-a7bd08c82e4f74387a39eeebb942712f23967420.zip | |
ARM: 5927/1: Make delimiters of DMA area globally visibly.
Adds DMA area to 'virtual memory map' startup message
Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/include/asm/memory.h | 19 | ||||
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 3 | ||||
| -rw-r--r-- | arch/arm/mm/init.c | 6 |
3 files changed, 17 insertions, 11 deletions
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index 5421d82a2572..f5e693b8bab3 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -76,6 +76,17 @@ */ #define IOREMAP_MAX_ORDER 24 +/* + * Size of DMA-consistent memory region. Must be multiple of 2M, + * between 2MB and 14MB inclusive. + */ +#ifndef CONSISTENT_DMA_SIZE +#define CONSISTENT_DMA_SIZE SZ_2M +#endif + +#define CONSISTENT_END (0xffe00000UL) +#define CONSISTENT_BASE (CONSISTENT_END - CONSISTENT_DMA_SIZE) + #else /* CONFIG_MMU */ /* @@ -113,14 +124,6 @@ #endif /* !CONFIG_MMU */ /* - * Size of DMA-consistent memory region. Must be multiple of 2M, - * between 2MB and 14MB inclusive. - */ -#ifndef CONSISTENT_DMA_SIZE -#define CONSISTENT_DMA_SIZE SZ_2M -#endif - -/* * Physical vs virtual RAM address space conversion. These are * private definitions which should NOT be used outside memory.h * files. Use virt_to_phys/phys_to_virt/__pa/__va instead. diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 26325cb5d368..48eedab1609b 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -29,9 +29,6 @@ #error "CONSISTENT_DMA_SIZE must be multiple of 2MiB" #endif -#define CONSISTENT_END (0xffe00000) -#define CONSISTENT_BASE (CONSISTENT_END - CONSISTENT_DMA_SIZE) - #define CONSISTENT_OFFSET(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT) #define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PGDIR_SHIFT) #define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PGDIR_SHIFT) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index e8e3a74ac5b5..bda481e6bc0f 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -651,6 +651,9 @@ void __init mem_init(void) printk(KERN_NOTICE "Virtual kernel memory layout:\n" " vector : 0x%08lx - 0x%08lx (%4ld kB)\n" " fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n" +#ifdef CONFIG_MMU + " DMA : 0x%08lx - 0x%08lx (%4ld MB)\n" +#endif " vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n" " lowmem : 0x%08lx - 0x%08lx (%4ld MB)\n" #ifdef CONFIG_HIGHMEM @@ -664,6 +667,9 @@ void __init mem_init(void) MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) + (PAGE_SIZE)), MLK(FIXADDR_START, FIXADDR_TOP), +#ifdef CONFIG_MMU + MLM(CONSISTENT_BASE, CONSISTENT_END), +#endif MLM(VMALLOC_START, (unsigned long)VMALLOC_END), MLM(PAGE_OFFSET, (unsigned long)high_memory), #ifdef CONFIG_HIGHMEM |