[PATCH RESEND v2 8/8] uio: Use new memtypes in uio_dmem_genirq

From	Anup Patel <anup.patel@broadcom.com>
Newsgroups	linux.kernel
Subject	[PATCH RESEND v2 8/8] uio: Use new memtypes in uio_dmem_genirq
Date	2016-08-08 08:00 +0200
Message-ID	<s3LLr-5N8-1@gated-at.bofh.it> (permalink)
References	<s3LLr-5N8-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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This patch extends uio_dmem_genirq driver to use recently
added memtypes as follows:
1. Use UIO_MEM_DEVICE memtype for MEM resources
2. Use UIO_MEM_PHYS_CACHE memtype for dynamic regions
when UIO DT node is marked as DMA coherent.

Signed-off-by: Anup Patel <anup.patel@broadcom.com>
---
 drivers/uio/uio_dmem_genirq.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/uio/uio_dmem_genirq.c b/drivers/uio/uio_dmem_genirq.c
index 1db2559..ce36afd 100644
--- a/drivers/uio/uio_dmem_genirq.c
+++ b/drivers/uio/uio_dmem_genirq.c
@@ -327,7 +327,7 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
 			break;
 		}
 
-		uiomem->memtype = UIO_MEM_PHYS;
+		uiomem->memtype = UIO_MEM_DEVICE;
 		uiomem->addr = r->start;
 		uiomem->size = resource_size(r);
 		++uiomem;
@@ -343,7 +343,12 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
 					" dynamic and fixed memory regions.\n");
 			break;
 		}
-		uiomem->memtype = UIO_MEM_PHYS;
+
+		if (pdev->dev.of_node &&
+		    of_dma_is_coherent(pdev->dev.of_node))
+			uiomem->memtype = UIO_MEM_PHYS_CACHE;
+		else
+			uiomem->memtype = UIO_MEM_PHYS;
 		uiomem->addr = DMEM_MAP_ERROR;
 		uiomem->size = pdata->dynamic_region_sizes[i];
 		++uiomem;
-- 
1.9.1

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[PATCH RESEND v2 8/8] uio: Use new memtypes in uio_dmem_genirq Anup Patel <anup.patel@broadcom.com> - 2016-08-08 08:00 +0200

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