diff options
| author |   Magnus Damm <damm+renesas@opensource.se> | 2017-10-16 21:30:07 +0900 |
|---|---|---|
| committer |   Alex Williamson <alex.williamson@redhat.com> | 2017-11-06 10:29:39 -0700 |
| commit | 1c894225bf5b1cdffac0c6ef935b61273203d7d5 (patch) | |
| tree | d047688f577b97c591d81f072fb70b2b55bd0d91 /drivers/iommu | |
| parent | iommu/ipmmu-vmsa: Make use of IOMMU_OF_DECLARE() (diff) | |
| download | linux-dev-1c894225bf5b1cdffac0c6ef935b61273203d7d5.tar.xz linux-dev-1c894225bf5b1cdffac0c6ef935b61273203d7d5.zip | |
iommu/ipmmu-vmsa: IPMMU device is 40-bit bus master
The r8a7795 IPMMU supports 40-bit bus mastering. Both
the coherent DMA mask and the streaming DMA mask are
set to unlock the 40-bit address space for coherent
allocations and streaming operations.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/ipmmu-vmsa.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 9cde61970bb5..6b74ec62f4b4 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -903,6 +903,7 @@ static int ipmmu_probe(struct platform_device *pdev) spin_lock_init(&mmu->lock); bitmap_zero(mmu->ctx, IPMMU_CTX_MAX); mmu->features = of_device_get_match_data(&pdev->dev); + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40)); /* Map I/O memory and request IRQ. */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |