From: Magnus Damm <magnus.damm@gmail.com>
To: joro@8bytes.org
Cc: laurent.pinchart+renesas@ideasonboard.com,
geert+renesas@glider.be, linux-kernel@vger.kernel.org,
linux-renesas-soc@vger.kernel.org,
iommu@lists.linux-foundation.org, horms+renesas@verge.net.au,
Magnus Damm <magnus.damm@gmail.com>,
robin.murphy@arm.com, m.szyprowski@samsung.com
Subject: [PATCH v5 05/09] iommu/ipmmu-vmsa: IPMMU device is 40-bit bus master
Date: Mon, 16 Oct 2017 21:30:07 +0900 [thread overview]
Message-ID: <150815700766.32763.4264924157922538405.sendpatchset@little-apple> (raw)
In-Reply-To: <150815695455.32763.1660214306749693609.sendpatchset@little-apple>
From: Magnus Damm <damm+renesas@opensource.se>
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>
---
Changes since V4:
- None
Changes since V3:
- None
Changes since V2:
- Updated the code and commit message to use 40 bits instead of 64 bits
Changes since V1:
- Updated the commit message
drivers/iommu/ipmmu-vmsa.c | 1 +
1 file changed, 1 insertion(+)
--- 0012/drivers/iommu/ipmmu-vmsa.c
+++ work/drivers/iommu/ipmmu-vmsa.c 2017-10-16 20:37:31.480607110 +0900
@@ -996,6 +996,7 @@ static int ipmmu_probe(struct platform_d
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);
next prev parent reply other threads:[~2017-10-16 12:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-16 12:29 [PATCH v5 00/09] iommu/ipmmu-vmsa: r8a7795 support V5 Magnus Damm
2017-10-16 12:29 ` [PATCH v5 01/09] iommu/ipmmu-vmsa: Introduce features, break out alias Magnus Damm
2017-10-16 12:29 ` [PATCH v5 02/09] iommu/ipmmu-vmsa: Add optional root device feature Magnus Damm
2017-10-16 12:29 ` [PATCH v5 03/09] iommu/ipmmu-vmsa: Enable multi context support Magnus Damm
2017-10-16 12:29 ` [PATCH v5 04/09] iommu/ipmmu-vmsa: Make use of IOMMU_OF_DECLARE() Magnus Damm
2017-10-16 12:30 ` Magnus Damm [this message]
2017-10-16 12:30 ` [PATCH v5 06/09] iommu/ipmmu-vmsa: Write IMCTR twice Magnus Damm
2017-10-16 12:30 ` [PATCH v5 07/09] iommu/ipmmu-vmsa: Make IMBUSCTR setup optional Magnus Damm
2017-10-16 12:30 ` [PATCH v5 08/09] iommu/ipmmu-vmsa: Allow two bit SL0 Magnus Damm
2017-10-16 12:30 ` [PATCH v5 09/09] iommu/ipmmu-vmsa: Hook up r8a7795 DT matching code Magnus Damm
2017-11-06 20:08 ` [PATCH v5 00/09] iommu/ipmmu-vmsa: r8a7795 support V5 Alex Williamson
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