Re: [POWERPC 04/18] Set archdata.dma_data for direct DMA in cell_dma_dev_setup()

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Tue, 2007-12-18 at 18:48 +0100, arnd@arndb.de wrote:
> plain text document attachment
> (0014-Set-archdata.dma_data-for-direct-DMA-in-cell_dma_dev.patch)
> Store a pointer to the direct_dma_offset in each device's dma_data
> in the case where we're using the direct DMA ops.
> 
> Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Ack.

> ---
>  arch/powerpc/platforms/cell/iommu.c |    5 +++--
>  1 files changed, 3 insertions(+), 2 deletions(-)
> 
> Index: linux-2.6-new/arch/powerpc/platforms/cell/iommu.c
> ===================================================================
> --- linux-2.6-new.orig/arch/powerpc/platforms/cell/iommu.c
> +++ linux-2.6-new/arch/powerpc/platforms/cell/iommu.c
> @@ -496,9 +496,10 @@ static void cell_dma_dev_setup(struct de
>  	struct cbe_iommu *iommu;
>  	struct dev_archdata *archdata = &dev->archdata;
>  
> -	/* If we run without iommu, no need to do anything */
> -	if (get_pci_dma_ops() == &dma_direct_ops)
> +	if (get_pci_dma_ops() == &dma_direct_ops) {
> +		archdata->dma_data = &dma_direct_offset;
>  		return;
> +	}
>  
>  	/* Current implementation uses the first window available in that
>  	 * node's iommu. We -might- do something smarter later though it may
>