diff options
| author | Leon Romanovsky <leonro@nvidia.com> | 2025-09-09 16:27:38 +0300 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2025-09-12 00:18:20 +0200 |
| commit | bf0ecb3c32396b3518f787d962c575f5a5cf097e (patch) | |
| tree | 613ba9ab426217b492a49db04faed6f54cd45700 | |
| parent | 18c9cbb042c930eb37f68df216319a371f4fcb22 (diff) | |
xen: swiotlb: Open code map_resource callback
General dma_direct_map_resource() is going to be removed
in next patch, so simply open-code it in xen driver.
Reviewed-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/e9c66a92e818f416875441b6711963f9782dbbeb.1757423202.git.leonro@nvidia.com
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index da1a7d3d377c..dd7747a2de87 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -392,6 +392,25 @@ xen_swiotlb_sync_sg_for_device(struct device *dev, struct scatterlist *sgl, } } +static dma_addr_t xen_swiotlb_direct_map_resource(struct device *dev, + phys_addr_t paddr, + size_t size, + enum dma_data_direction dir, + unsigned long attrs) +{ + dma_addr_t dma_addr = paddr; + + if (unlikely(!dma_capable(dev, dma_addr, size, false))) { + dev_err_once(dev, + "DMA addr %pad+%zu overflow (mask %llx, bus limit %llx).\n", + &dma_addr, size, *dev->dma_mask, dev->bus_dma_limit); + WARN_ON_ONCE(1); + return DMA_MAPPING_ERROR; + } + + return dma_addr; +} + /* * Return whether the given device DMA address mask can be supported * properly. For example, if your device can only drive the low 24-bits @@ -426,5 +445,5 @@ const struct dma_map_ops xen_swiotlb_dma_ops = { .alloc_pages_op = dma_common_alloc_pages, .free_pages = dma_common_free_pages, .max_mapping_size = swiotlb_max_mapping_size, - .map_resource = dma_direct_map_resource, + .map_resource = xen_swiotlb_direct_map_resource, }; |