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author | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-14 19:56:02 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-14 19:56:02 -0800 |
commit | 4060994c3e337b40e0f6fa8ce2cc178e021baf3d (patch) | |
tree | 980297c1747ca89354bc879cc5d17903eacb19e2 /include/asm-x86_64/dma.h | |
parent | 0174f72f848dfe7dc7488799776303c81b181b16 (diff) | |
parent | d3ee871e63d0a0c70413dc0aa5534b8d6cd6ec37 (diff) | |
download | op-kernel-dev-4060994c3e337b40e0f6fa8ce2cc178e021baf3d.zip op-kernel-dev-4060994c3e337b40e0f6fa8ce2cc178e021baf3d.tar.gz |
Merge x86-64 update from Andi
Diffstat (limited to 'include/asm-x86_64/dma.h')
-rw-r--r-- | include/asm-x86_64/dma.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/asm-x86_64/dma.h b/include/asm-x86_64/dma.h index 16fa3a0..6f2a817 100644 --- a/include/asm-x86_64/dma.h +++ b/include/asm-x86_64/dma.h @@ -72,8 +72,15 @@ #define MAX_DMA_CHANNELS 8 -/* The maximum address that we can perform a DMA transfer to on this platform */ -#define MAX_DMA_ADDRESS (PAGE_OFFSET+0x1000000) + +/* 16MB ISA DMA zone */ +#define MAX_DMA_PFN ((16*1024*1024) >> PAGE_SHIFT) + +/* 4GB broken PCI/AGP hardware bus master zone */ +#define MAX_DMA32_PFN ((4UL*1024*1024*1024) >> PAGE_SHIFT) + +/* Compat define for old dma zone */ +#define MAX_DMA_ADDRESS ((unsigned long)__va(MAX_DMA_PFN << PAGE_SHIFT)) /* 8237 DMA controllers */ #define IO_DMA1_BASE 0x00 /* 8 bit slave DMA, channels 0..3 */ |