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media: rockchip: isp: add iommu fault handler

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Change-Id: Ic0cf002567e00dbdf2170cfcb3f6ac9bc6924d31
Signed-off-by: Cai YiWei <cyw@rock-chips.com>
This commit is contained in:
Cai YiWei
2025-07-29 10:03:31 +08:00
committed by Tao Huang
parent 2c7f131ecb
commit 3d712791cd
1 changed files with 21 additions and 2 deletions
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23
drivers/media/platform/rockchip/isp/hw.c
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@@ -1014,9 +1014,25 @@ static const struct of_device_id rkisp_hw_of_match[] = {
{},
};
static inline bool is_iommu_enable(struct device *dev)
static int rkisp_iommu_fault_handle(struct iommu_domain *iommu, struct device *iommu_dev,
unsigned long iova, int status, void *arg)
{
struct rkisp_hw_dev *hw_dev = arg;
dev_err(iommu_dev, "fault addr:0x%08lx status:%x arg:%p\n", iova, status, arg);
if (!hw_dev) {
dev_err(iommu_dev, "pagefault without device to handle\n");
return 0;
}
rockchip_iommu_mask_irq(hw_dev->dev);
return 0;
}
static inline bool is_iommu_enable(struct rkisp_hw_dev *hw_dev)
{
struct device *dev = hw_dev->dev;
struct device_node *iommu;
struct iommu_domain *domain;
iommu = of_parse_phandle(dev->of_node, "iommus", 0);
if (!iommu) {
@@ -1029,6 +1045,9 @@ static inline bool is_iommu_enable(struct device *dev)
}
of_node_put(iommu);
domain = iommu_get_domain_for_dev(dev);
if (domain)
iommu_set_fault_handler(domain, rkisp_iommu_fault_handle, hw_dev);
return true;
}
@@ -1469,7 +1488,7 @@ static int rkisp_hw_probe(struct platform_device *pdev)
hw_dev->is_dma_sg_ops = true;
hw_dev->is_buf_init = false;
hw_dev->is_shutdown = false;
hw_dev->is_mmu = is_iommu_enable(dev);
hw_dev->is_mmu = is_iommu_enable(hw_dev);
ret = of_reserved_mem_device_init(dev);
if (ret) {
is_mem_reserved = false;