From mboxrd@z Thu Jan 1 00:00:00 1970 From: joro@8bytes.org (Joerg Roedel) Date: Fri, 29 Jan 2016 12:26:45 +0100 Subject: [PATCH v1] iommu/rockchip: reconstruct to support multi slaves In-Reply-To: <1453186980-21055-1-git-send-email-zhengsq@rock-chips.com> References: <1453186980-21055-1-git-send-email-zhengsq@rock-chips.com> Message-ID: <20160129112645.GC4204@8bytes.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jan 19, 2016 at 03:03:00PM +0800, Shunqian Zheng wrote: > From: ZhengShunQian > > There are some IPs, such as video encoder/decoder, contains 2 slave iommus, > one for reading and the other for writing. They share the same irq and > clock with master. > > This patch reconstructs to support this case by making them share the same > Page Directory, Page Tables and even the register operations. > That means every instruction to the reading MMU registers would be > duplicated to the writing MMU and vice versa. > > Signed-off-by: ZhengShunQian > --- > drivers/iommu/rockchip-iommu.c | 214 ++++++++++++++++++++++++++--------------- > 1 file changed, 135 insertions(+), 79 deletions(-) Applied, thanks.