From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Mon, 10 Sep 2012 12:35:54 +1000 From: David Gibson To: Alexey Kardashevskiy Subject: Re: [PATCH] powerpc-powernv: added tce_get callback for powernv platform Message-ID: <20120910023554.GP12554@truffula.fritz.box> References: <1346807975-2323-1-git-send-email-aik@ozlabs.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1346807975-2323-1-git-send-email-aik@ozlabs.ru> Cc: linuxppc-dev@lists.ozlabs.org, Paul Mackerras List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Wed, Sep 05, 2012 at 11:19:35AM +1000, Alexey Kardashevskiy wrote: > The upcoming VFIO support requires a way to know which > entry in the TCE map is not empty in order to do cleanup > at QEMU exit/crash. This patch adds such functionality > to POWERNV platform code. > > Signed-off-by: Alexey Kardashevskiy Looks good to me. Ben, do you plan to merge this soon? > --- > arch/powerpc/platforms/powernv/pci.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c > index be3cfc5..05205cf 100644 > --- a/arch/powerpc/platforms/powernv/pci.c > +++ b/arch/powerpc/platforms/powernv/pci.c > @@ -447,6 +447,11 @@ static void pnv_tce_free(struct iommu_table *tbl, long index, long npages) > pnv_tce_invalidate(tbl, tces, tcep - 1); > } > > +static unsigned long pnv_tce_get(struct iommu_table *tbl, long index) > +{ > + return ((u64 *)tbl->it_base)[index - tbl->it_offset]; > +} > + > void pnv_pci_setup_iommu_table(struct iommu_table *tbl, > void *tce_mem, u64 tce_size, > u64 dma_offset) > @@ -597,6 +602,7 @@ void __init pnv_pci_init(void) > ppc_md.pci_dma_dev_setup = pnv_pci_dma_dev_setup; > ppc_md.tce_build = pnv_tce_build; > ppc_md.tce_free = pnv_tce_free; > + ppc_md.tce_get = pnv_tce_get; > ppc_md.pci_probe_mode = pnv_pci_probe_mode; > set_pci_dma_ops(&dma_iommu_ops); > -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson