Hi Joerg, Thank you for your quick review. From: Joerg Roedel <joerg.roedel@xxxxxxx> Subject: Re: [PATCH v2 1/2] [RFC] ARM: IOMMU: Tegra20: iommu_ops for GART driver Date: Fri, 16 Dec 2011 16:43:31 +0100 Message-ID: <20111216154331.GD29877@xxxxxxx> > On Thu, Dec 15, 2011 at 03:11:29PM +0200, Hiroshi DOYU wrote: > > Tegra 20 IOMMU H/W, GART (Graphics Address Relocation Table). This > > patch implements struct iommu_ops for GART for the upper IOMMU API. > > > > This H/W module supports only single virtual address space(domain), > > and manages a single level 1-to-1 mapping H/W translation page table. > > > > Signed-off-by: Hiroshi DOYU <hdoyu@xxxxxxxxxx> > > --- > > drivers/iommu/Kconfig | 11 + > > drivers/iommu/Makefile | 1 + > > drivers/iommu/tegra-gart.c | 451 ++++++++++++++++++++++++++++++++++++++++++++ > > The code looks good in general. Thanks. > I think we need to extend the IOMMU-API > a little bit to better support GART IOMMUs. A user of the IOMMU-API > should be able to get the information about the iova-base and size of > the aperture for example. These extensions will be beneficial for > porting other GART-like driver to the IOMMU-API too. is it similar to how ".pgsize_bitmap" is passed? > > > Joerg > > -- > AMD Operating System Research Center > > Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach > General Managers: Alberto Bozzo, Andrew Bowd > Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632 > -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
