diff options
| author | Christoph Hellwig <hch@lst.de> | 2018-03-19 13:38:15 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-03-20 12:01:56 +0300 |
| commit | fec777c385b6376048fc4b08f039366545b335cd (patch) | |
| tree | a613e68a5746d74d69bf3aa06818b05119d8e500 /arch/x86/kernel/amd_gart_64.c | |
| parent | 038d07a283d62336b32cc23b62aecdf9418cfc11 (diff) | |
| download | linux-fec777c385b6376048fc4b08f039366545b335cd.tar.xz | |
x86/dma: Use DMA-direct (CONFIG_DMA_DIRECT_OPS=y)
The generic DMA-direct (CONFIG_DMA_DIRECT_OPS=y) implementation is now
functionally equivalent to the x86 nommu dma_map implementation, so
switch over to using it.
That includes switching from using x86_dma_supported in various IOMMU
drivers to use dma_direct_supported instead, which provides the same
functionality.
Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Jon Mason <jdmason@kudzu.us>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Muli Ben-Yehuda <mulix@mulix.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: iommu@lists.linux-foundation.org
Link: http://lkml.kernel.org/r/20180319103826.12853-4-hch@lst.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/amd_gart_64.c')
| -rw-r--r-- | arch/x86/kernel/amd_gart_64.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index ecd486cb06ab..52e3abcf3e70 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -501,8 +501,7 @@ gart_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr, } __free_pages(page, get_order(size)); } else - return dma_generic_alloc_coherent(dev, size, dma_addr, flag, - attrs); + return dma_direct_alloc(dev, size, dma_addr, flag, attrs); return NULL; } @@ -513,7 +512,7 @@ gart_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_addr, unsigned long attrs) { gart_unmap_page(dev, dma_addr, size, DMA_BIDIRECTIONAL, 0); - dma_generic_free_coherent(dev, size, vaddr, dma_addr, attrs); + dma_direct_free(dev, size, vaddr, dma_addr, attrs); } static int gart_mapping_error(struct device *dev, dma_addr_t dma_addr) @@ -705,7 +704,7 @@ static const struct dma_map_ops gart_dma_ops = { .alloc = gart_alloc_coherent, .free = gart_free_coherent, .mapping_error = gart_mapping_error, - .dma_supported = x86_dma_supported, + .dma_supported = dma_direct_supported, }; static void gart_iommu_shutdown(void) |