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.pa...@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 0a0cc19..4bd6f31 100644
--- a/drivers/uio/uio_dmem_genirq.c
+++ b/drivers/uio/uio_dmem_genirq.c
@@ -279,7 +279,7 @@ 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;
@@ -295,7 +295,12 @@ 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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