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 v4 05/09] iommu/ipmmu-vmsa: IPMMU device is 40-bit bus master
Date: Mon, 19 Jun 2017 18:14:38 +0900 [thread overview]
Message-ID: <149786367805.14868.13104785061519090144.sendpatchset@little-apple> (raw)
In-Reply-To: <149786362527.14868.2143461703972595839.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 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(+)
--- 0021/drivers/iommu/ipmmu-vmsa.c
+++ work/drivers/iommu/ipmmu-vmsa.c 2017-06-19 14:05:33.720607110 +0900
@@ -1004,6 +1004,7 @@ 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:[~2017-06-19 9:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-19 9:13 [PATCH v4 00/09] iommu/ipmmu-vmsa: r8a7795 support V4 Magnus Damm
2017-06-19 9:13 ` [PATCH v4 01/09] iommu/ipmmu-vmsa: Introduce features, break out alias Magnus Damm
2017-06-19 9:14 ` [PATCH v4 02/09] iommu/ipmmu-vmsa: Add optional root device feature Magnus Damm
2017-06-19 17:19 ` Robin Murphy
2017-10-16 12:47 ` Magnus Damm
2017-06-19 9:14 ` [PATCH v4 03/09] iommu/ipmmu-vmsa: Enable multi context support Magnus Damm
2017-06-19 9:14 ` [PATCH v4 04/09] iommu/ipmmu-vmsa: Make use of IOMMU_OF_DECLARE() Magnus Damm
2017-06-19 9:14 ` Magnus Damm [this message]
2017-06-19 9:14 ` [PATCH v4 06/09] iommu/ipmmu-vmsa: Write IMCTR twice Magnus Damm
2017-06-19 9:14 ` [PATCH v4 07/09] iommu/ipmmu-vmsa: Make IMBUSCTR setup optional Magnus Damm
2017-06-19 9:15 ` [PATCH v4 08/09] iommu/ipmmu-vmsa: Allow two bit SL0 Magnus Damm
2017-06-19 9:15 ` [PATCH v4 09/09] iommu/ipmmu-vmsa: Hook up r8a7795 DT matching code Magnus Damm
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