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Merge "icnss2: Add support to enable IO Coherency"

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qctecmdr 2021-02-04 04:20:35 -08:00 • committed by Gerrit - the friendly Code Review server
commit 9d2aa50e8c
1 changed files with 9 additions and 1 deletions
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10
drivers/soc/qcom/icnss2/main.c
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@ -2859,6 +2859,8 @@ int icnss_smmu_map(struct device *dev,
phys_addr_t paddr, uint32_t *iova_addr, size_t size)
{
struct icnss_priv *priv = dev_get_drvdata(dev);
int flag = IOMMU_READ | IOMMU_WRITE;
bool dma_coherent = false;
unsigned long iova;
int prop_len = 0;
size_t len;
@ -2888,11 +2890,17 @@ int icnss_smmu_map(struct device *dev,
return -ENOMEM;
}
dma_coherent = of_property_read_bool(dev->of_node, "dma-coherent");
icnss_pr_dbg("dma-coherent is %s\n",
dma_coherent ? "enabled" : "disabled");
if (dma_coherent)
flag |= IOMMU_CACHE;
icnss_pr_dbg("IOMMU Map: iova %lx, len %zu\n", iova, len);
ret = iommu_map(priv->iommu_domain, iova,
rounddown(paddr, PAGE_SIZE), len,
IOMMU_READ | IOMMU_WRITE);
flag);
if (ret) {
icnss_pr_err("PA to IOVA mapping failed, ret %d\n", ret);
return ret;