From: Hideki EIRAKU <hdk@igel.co.jp>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] Use dma_mmap_coherent to support IOMMU mapper
Date: Wed, 25 Jul 2012 06:29:21 +0000 [thread overview]
Message-ID: <1343197764-13659-1-git-send-email-hdk@igel.co.jp> (raw)
There is a dma_mmap_coherent() API in some architectures. This API
provides a mmap function for memory allocated by dma_alloc_coherent().
Some drivers mmap a dma_addr_t returned by dma_alloc_coherent() as a
physical address. But such drivers do not work correctly when IOMMU
mapper is used.
Hideki EIRAKU (3):
ARM: dma-mapping: define ARCH_HAS_DMA_MMAP_COHERENT
media: videobuf2-dma-contig: use dma_mmap_coherent if available
fbdev: sh_mobile_lcdc: use dma_mmap_coherent if available
arch/arm/include/asm/dma-mapping.h | 1 +
drivers/media/video/videobuf2-dma-contig.c | 18 ++++++++++++++++++
drivers/video/sh_mobile_lcdcfb.c | 14 ++++++++++++++
3 files changed, 33 insertions(+), 0 deletions(-)
next reply other threads:[~2012-07-25 6:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-25 6:29 Hideki EIRAKU [this message]
2012-07-25 6:29 ` [PATCH 1/3] ARM: dma-mapping: define ARCH_HAS_DMA_MMAP_COHERENT Hideki EIRAKU
2012-07-25 6:29 ` [PATCH 2/3] media: videobuf2-dma-contig: use dma_mmap_coherent if available Hideki EIRAKU
2012-07-25 6:29 ` [PATCH 3/3] fbdev: sh_mobile_lcdc: " Hideki EIRAKU
2012-07-25 11:10 ` Laurent Pinchart
2012-07-25 16:01 ` [PATCH] ALSA: pcm - Don't define ARCH_HAS_DMA_MMAP_COHERENT privately for ARM Laurent Pinchart
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