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Commit 1c894225 authored by Magnus Damm's avatar Magnus Damm Committed by Alex Williamson
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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: default avatarMagnus Damm <damm+renesas@opensource.se>
Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent cda52fcd

drivers/iommu/ipmmu-vmsa.c

+1 −0
Original line number Diff line number Diff line
@@ -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);