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Date: Thu, 29 Aug 2013 19:32:31 +0100 From: Stefano Stabellini <stefano.stabellini@...citrix.com> To: <xen-devel@...ts.xensource.com> CC: <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <konrad.wilk@...cle.com>, <Stefano.Stabellini@...citrix.com>, <Ian.Campbell@...rix.com>, Stefano Stabellini <stefano.stabellini@...citrix.com> Subject: [PATCH v5 10/13] swiotlb-xen: introduce xen_swiotlb_set_dma_mask Implement xen_swiotlb_set_dma_mask, use it for set_dma_mask on arm. Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com> --- arch/arm/xen/mm.c | 1 + drivers/xen/swiotlb-xen.c | 12 ++++++++++++ include/xen/swiotlb-xen.h | 2 ++ 3 files changed, 15 insertions(+), 0 deletions(-) diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index 916deb2..1477ace 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -107,6 +107,7 @@ static struct dma_map_ops xen_swiotlb_dma_ops = { .map_page = xen_swiotlb_map_page, .unmap_page = xen_swiotlb_unmap_page, .dma_supported = xen_swiotlb_dma_supported, + .set_dma_mask = xen_swiotlb_set_dma_mask, }; int __init xen_mm_init(void) diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index b11a11f..010da31 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -732,3 +732,15 @@ xen_swiotlb_dma_supported(struct device *hwdev, u64 mask) return xen_virt_to_bus(xen_io_tlb_end - 1) <= mask; } EXPORT_SYMBOL_GPL(xen_swiotlb_dma_supported); + +int +xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask) +{ + if (!dev->dma_mask || !xen_swiotlb_dma_supported(dev, dma_mask)) + return -EIO; + + *dev->dma_mask = dma_mask; + + return 0; +} +EXPORT_SYMBOL_GPL(xen_swiotlb_set_dma_mask); diff --git a/include/xen/swiotlb-xen.h b/include/xen/swiotlb-xen.h index de8bcc6..7b64465 100644 --- a/include/xen/swiotlb-xen.h +++ b/include/xen/swiotlb-xen.h @@ -55,4 +55,6 @@ xen_swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr); extern int xen_swiotlb_dma_supported(struct device *hwdev, u64 mask); +extern int +xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask); #endif /* __LINUX_SWIOTLB_XEN_H */ -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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