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| author | Paul Mackerras <paulus@samba.org> | 2008-11-19 08:10:32 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-11-19 08:10:32 +0300 |
| commit | cea555d384b85271035814c5adad23e6c7fc5d2a (patch) | |
| tree | 1181b6333a69a135293ec75f8a48c849ee32c015 /lib/swiotlb.c | |
| parent | 78608dd32ce46789e970d6c3c423cd668c138d6c (diff) | |
| parent | 7f0f598a0069d1ab072375965a4b69137233169c (diff) | |
| download | linux-cea555d384b85271035814c5adad23e6c7fc5d2a.tar.xz | |
Merge branch 'linux-2.6' into next
Diffstat (limited to 'lib/swiotlb.c')
| -rw-r--r-- | lib/swiotlb.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 78330c37a61b..5f6c629a924d 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -467,9 +467,13 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t dev_addr; void *ret; int order = get_order(size); + u64 dma_mask = DMA_32BIT_MASK; + + if (hwdev && hwdev->coherent_dma_mask) + dma_mask = hwdev->coherent_dma_mask; ret = (void *)__get_free_pages(flags, order); - if (ret && address_needs_mapping(hwdev, virt_to_bus(ret), size)) { + if (ret && !is_buffer_dma_capable(dma_mask, virt_to_bus(ret), size)) { /* * The allocated memory isn't reachable by the device. * Fall back on swiotlb_map_single(). @@ -493,9 +497,9 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size, dev_addr = virt_to_bus(ret); /* Confirm address can be DMA'd by device */ - if (address_needs_mapping(hwdev, dev_addr, size)) { + if (!is_buffer_dma_capable(dma_mask, dev_addr, size)) { printk("hwdev DMA mask = 0x%016Lx, dev_addr = 0x%016Lx\n", - (unsigned long long)*hwdev->dma_mask, + (unsigned long long)dma_mask, (unsigned long long)dev_addr); /* DMA_TO_DEVICE to avoid memcpy in unmap_single */ |