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Commit a4491e82 authored by Venu Yeshala's avatar Venu Yeshala Committed by Gerrit - the friendly Code Review server
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msm: camera: isp: Disable SMMU stall upon VFE page fault 



Terminate fault transaction and don't stall SMMU for VFE.

CRs-Fixed: 2048270
Change-Id: I357d7b92c7c066bf2ba157bb35b4e350bcbebdda
Signed-off-by: default avatarVenu Yeshala <vyeshala@codeaurora.org>
parent a62f4296

drivers/media/platform/msm/camera_v2/common/cam_smmu_api.c

+2 −1
Original line number Diff line number Diff line
@@ -1360,11 +1360,12 @@ int cam_smmu_set_attr(int handle, uint32_t flags, int32_t *data) 
		/* set attributes */

		ret = iommu_domain_set_attr(domain, cb->attr, (void *)data);

		if (ret < 0) {

			mutex_unlock(&iommu_cb_set.cb_info[idx].lock);

			pr_err("Error: set attr\n");

			return -ENODEV;

		}

	} else {

		return -EINVAL;

		ret = -EINVAL;

	}

	mutex_unlock(&iommu_cb_set.cb_info[idx].lock);

	return ret;

drivers/media/platform/msm/camera_v2/isp/msm_buf_mgr.c

+5 −0
Original line number Diff line number Diff line
@@ -1166,10 +1166,15 @@ int msm_isp_smmu_attach(struct msm_isp_buf_mgr *buf_mgr, 
{

	struct msm_vfe_smmu_attach_cmd *cmd = arg;

	int rc = 0;

	int32_t stall_disable = 1;



	pr_debug("%s: cmd->security_mode : %d\n", __func__, cmd->security_mode);



	mutex_lock(&buf_mgr->lock);

	if (cmd->iommu_attach_mode == IOMMU_ATTACH) {

		/* disable smmu stall on fault */

		cam_smmu_set_attr(buf_mgr->iommu_hdl,

			DOMAIN_ATTR_CB_STALL_DISABLE, &stall_disable);

		/*

		 * Call hypervisor thru scm call to notify secure or

		 * non-secure mode