A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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Merge "icnss2: Add handler for SMMU faults"

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This commit is contained in:
qctecmdr 2021-02-24 06:59:35 -08:00 • committed by Gerrit - the friendly Code Review server
commit 6ddda8325e
1 changed files with 30 additions and 0 deletions
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30
drivers/soc/qcom/icnss2/main.c
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@ -3530,6 +3530,32 @@ out:
return ret;
}
static int icnss_smmu_fault_handler(struct iommu_domain *domain,
struct device *dev, unsigned long iova,
int flags, void *handler_token)
{
struct icnss_priv *priv = handler_token;
struct icnss_uevent_fw_down_data fw_down_data = {0};
icnss_fatal_err("SMMU fault happened with IOVA 0x%lx\n", iova);
if (!priv) {
icnss_pr_err("priv is NULL\n");
return -ENODEV;
}
if (test_bit(ICNSS_FW_READY, &priv->state)) {
fw_down_data.crashed = true;
icnss_call_driver_uevent(priv, ICNSS_UEVENT_FW_DOWN,
&fw_down_data);
}
icnss_trigger_recovery(&priv->pdev->dev);
/* IOMMU driver requires non-zero return value to print debug info. */
return -EINVAL;
}
static int icnss_smmu_dt_parse(struct icnss_priv *priv)
{
int ret = 0;
@ -3561,6 +3587,10 @@ static int icnss_smmu_dt_parse(struct icnss_priv *priv)
if (!ret && !strcmp("fastmap", iommu_dma_type)) {
icnss_pr_dbg("SMMU S1 stage enabled\n");
priv->smmu_s1_enable = true;
if (priv->device_id == WCN6750_DEVICE_ID)
iommu_set_fault_handler(priv->iommu_domain,
icnss_smmu_fault_handler,
priv);
}
res = platform_get_resource_byname(pdev,