samsung-sm8650/android_kernel_samsung_sm8650-modules
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msm: camera: smmu: Set the segment size for the context banks

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Set the right segment size in the driver for dma_map_sg to
allow for partial cache maintanence.

Change-Id: I6c439f23e957eb667bf959c830b120c0390e41b1
Signed-off-by: Karthik Anantha Ram <kartanan@codeaurora.org>
Signed-off-by: Jigarkumar Zala <jzala@codeaurora.org>
This commit is contained in:
Jigarkumar Zala
2019-07-29 12:23:14 -07:00
committed by Gerrit - the friendly Code Review server
parent 44abb0120d
commit 87c82dcf6a
1 changed files with 24 additions and 1 deletions
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25
drivers/cam_smmu/cam_smmu_api.c
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@@ -3474,9 +3474,24 @@ static int cam_populate_smmu_context_banks(struct device *dev,
iommu_set_fault_handler(cb->domain, iommu_set_fault_handler(cb->domain,
cam_smmu_iommu_fault_handler, cam_smmu_iommu_fault_handler,
(void *)cb->name); (void *)cb->name);
if (!dev->dma_parms)
dev->dma_parms = devm_kzalloc(dev,
sizeof(*dev->dma_parms), GFP_KERNEL);
if (!dev->dma_parms) {
CAM_WARN(CAM_SMMU,
"Failed to allocate dma_params");
dev->dma_parms = NULL;
goto end;
}
dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
dma_set_seg_boundary(dev, DMA_BIT_MASK(64));
end:
/* increment count to next bank */ /* increment count to next bank */
iommu_cb_set.cb_init_count++; iommu_cb_set.cb_init_count++;
CAM_DBG(CAM_SMMU, "X: cb init count :%d", iommu_cb_set.cb_init_count); CAM_DBG(CAM_SMMU, "X: cb init count :%d", iommu_cb_set.cb_init_count);
cb_init_fail: cb_init_fail:
@@ -3488,6 +3503,7 @@ static int cam_smmu_probe(struct platform_device *pdev)
int rc = 0; int rc = 0;
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
dev->dma_parms = NULL;
if (of_device_is_compatible(dev->of_node, "qcom,msm-cam-smmu")) { if (of_device_is_compatible(dev->of_node, "qcom,msm-cam-smmu")) {
rc = cam_alloc_smmu_context_banks(dev); rc = cam_alloc_smmu_context_banks(dev);
if (rc < 0) { if (rc < 0) {
@@ -3536,8 +3552,15 @@ static int cam_smmu_probe(struct platform_device *pdev)
static int cam_smmu_remove(struct platform_device *pdev) static int cam_smmu_remove(struct platform_device *pdev)
{ {
struct device *dev = &pdev->dev;
/* release all the context banks and memory allocated */ /* release all the context banks and memory allocated */
cam_smmu_reset_iommu_table(CAM_SMMU_TABLE_DEINIT); cam_smmu_reset_iommu_table(CAM_SMMU_TABLE_DEINIT);
if (dev && dev->dma_parms) {
devm_kfree(dev, dev->dma_parms);
dev->dma_parms = NULL;
}
if (of_device_is_compatible(pdev->dev.of_node, "qcom,msm-cam-smmu")) if (of_device_is_compatible(pdev->dev.of_node, "qcom,msm-cam-smmu"))
cam_smmu_release_cb(pdev); cam_smmu_release_cb(pdev);
return 0; return 0;