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authorFenkart/Bostandzhyan <andreas.fenkart@streamunlimited.com>2010-02-07 21:46:33 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-02-15 21:40:32 +0000
commita7bd08c82e4f74387a39eeebb942712f23967420 (patch)
tree4637930167da99522bcff48e4877bdfa961f13c1 /arch
parentdb9ef1af4879c121c354ad2f653f185f1d50fd89 (diff)
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/include/asm/memory.h19
-rw-r--r--arch/arm/mm/dma-mapping.c3
-rw-r--r--arch/arm/mm/init.c6
3 files changed, 17 insertions, 11 deletions
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 5421d82a257..f5e693b8bab 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 26325cb5d36..48eedab1609 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 e8e3a74ac5b..bda481e6bc0 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