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From: Hiroshi Doyu <hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: [RFC 1/3] common: DMA-mapping: add DMA_ATTR_READ_ONLY attribute
Date: Thu, 20 Jun 2013 08:49:42 +0300	[thread overview]
Message-ID: <1371707384-30037-2-git-send-email-hdoyu@nvidia.com> (raw)
In-Reply-To: <1371707384-30037-1-git-send-email-hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

This patch adds DMA_ATTR_READ_ONLY attribute to the DMA-mapping
subsystem.

This sets mapping attribute read-only.

Signed-off-by: Hiroshi Doyu <hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
 include/linux/dma-attrs.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/dma-attrs.h b/include/linux/dma-attrs.h
index f272809..5d7371c 100644
--- a/include/linux/dma-attrs.h
+++ b/include/linux/dma-attrs.h
@@ -18,6 +18,7 @@ enum dma_attr {
 	DMA_ATTR_NO_KERNEL_MAPPING,
 	DMA_ATTR_SKIP_CPU_SYNC,
 	DMA_ATTR_SKIP_FREE_IOVA,
+	DMA_ATTR_READ_ONLY,
 	DMA_ATTR_MAX,
 };
 
-- 
1.8.1.5

  parent reply	other threads:[~2013-06-20  5:49 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-20  5:49 [RFC 0/3] How to pass IOMMU map attr via DMA API? Hiroshi Doyu
     [not found] ` <1371707384-30037-1-git-send-email-hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-06-20  5:49   ` Hiroshi Doyu [this message]
2013-06-20  5:49   ` [RFC 2/3] ARM: dma-mapping: Pass DMA attrs as IOMMU prot Hiroshi Doyu
     [not found]     ` <1371707384-30037-3-git-send-email-hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-06-20  8:07       ` [Linaro-mm-sig] " Nishanth Peethambaran
     [not found]         ` <CAMcxFTRnnCnPnvMi89r7rUsN4xeYzZGqy9s5v5ukm_fJ_d_RGg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-20  8:24           ` Hiroshi Doyu
     [not found]             ` <20130620.112439.1330557591655135630.hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-06-20  8:55               ` Nishanth Peethambaran
     [not found]                 ` <CAMcxFTS0dUUEfGj-=-cb_rdfy+qWvtsaoR6Tv+-x05XX0mZmmw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-20  9:54                   ` Hiroshi Doyu
     [not found]                     ` <20130620.125431.1161068035083905855.hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-06-20 10:13                       ` Arnd Bergmann
     [not found]                         ` <201306201213.13644.arnd-r2nGTMty4D4@public.gmane.org>
2013-06-20 10:34                           ` Hiroshi Doyu
     [not found]                             ` <20130620.133407.798194318297047071.hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-06-20 10:57                               ` Arnd Bergmann
     [not found]                                 ` <201306201257.58419.arnd-r2nGTMty4D4@public.gmane.org>
2013-06-20 12:49                                   ` Nishanth Peethambaran
2013-06-20  5:49   ` [RFC 3/3] iommu/tegra: smmu: Support read-only mapping Hiroshi Doyu
     [not found]     ` <1371707384-30037-4-git-send-email-hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-06-20  6:50       ` [Linaro-mm-sig] " Kyungmin Park
     [not found]         ` <CAH9JG2VUCJErBNwT0_u_9niaSWUza5gJ-+q8OOJhrrdw5D-hUg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-20  7:27           ` Hiroshi Doyu
2013-06-20  9:31   ` [RFC 0/3] How to pass IOMMU map attr via DMA API? Will Deacon
     [not found]     ` <20130620093152.GE2842-MRww78TxoiP5vMa5CHWGZ34zcgK1vI+I0E9HWUfgJXw@public.gmane.org>
2013-06-20  9:59       ` Hiroshi Doyu
     [not found]         ` <20130620.125929.2250094502232662356.hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-06-20 10:11           ` Catalin Marinas
     [not found]             ` <20130620101110.GB18536-5wv7dgnIgG8@public.gmane.org>
2013-06-20 11:00               ` Hiroshi Doyu
2013-06-20 10:12           ` Will Deacon
2013-06-21  7:17   ` Marek Szyprowski
     [not found]     ` <51C3FE27.5070702-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2013-06-21 16:03       ` Joerg Roedel
     [not found]         ` <20130621160344.GM11309-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2013-06-24  5:17           ` Hiroshi Doyu
     [not found]             ` <20130624081759.76e66d42bbf7c2c54ed1975c-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-06-24  7:21               ` Joerg Roedel

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