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Date: Thu, 23 Sep 2010 15:38:09 -0700 From: David Daney <ddaney@...iumnetworks.com> To: linux-mips@...ux-mips.org, ralf@...ux-mips.org, linux-kernel@...r.kernel.org Cc: David Daney <ddaney@...iumnetworks.com> Subject: [PATCH 2/9] MIPS: Allow MAX_DMA32_PFN to be overridden. DMA mapping may reduce the usable physical address range usable for 32-bit DMA. Signed-off-by: David Daney <ddaney@...iumnetworks.com> --- arch/mips/include/asm/dma.h | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/mips/include/asm/dma.h b/arch/mips/include/asm/dma.h index 1353c81..2d47da6 100644 --- a/arch/mips/include/asm/dma.h +++ b/arch/mips/include/asm/dma.h @@ -91,7 +91,10 @@ #define MAX_DMA_ADDRESS (PAGE_OFFSET + 0x01000000) #endif #define MAX_DMA_PFN PFN_DOWN(virt_to_phys((void *)MAX_DMA_ADDRESS)) + +#ifndef MAX_DMA32_PFN #define MAX_DMA32_PFN (1UL << (32 - PAGE_SHIFT)) +#endif /* 8237 DMA controllers */ #define IO_DMA1_BASE 0x00 /* 8 bit slave DMA, channels 0..3 */ -- 1.7.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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