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ANDROID: iommu: add vendor hooks for change dma property

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A vendor hook was added that allows the property value to vary depending
on the dma attribute.

Bug: 327086402
Change-Id: Ic415f019b861730feb40e10ada856ee63327153e
Signed-off-by: Janghyuck Kim <janghyuck.kim@samsung.com>
This commit is contained in:
Janghyuck Kim
2024-02-27 15:56:07 +09:00
committed by Treehugger Robot
parent f22b02c473
commit 7d3b2c27d0
3 changed files with 7 additions and 0 deletions
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drivers/android/vendor_hooks.c
+1
View File
@@ -110,6 +110,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_io_statistics);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cgroup_attach);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_iommu_setup_dma_ops);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_iommu_alloc_insert_iova);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_iommu_dma_info_to_prot);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_iommu_iovad_alloc_iova);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_iommu_iovad_free_iova);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_psci_tos_resident_on);
drivers/iommu/dma-iommu.c
+2
View File
@@ -751,6 +751,8 @@ static int dma_info_to_prot(enum dma_data_direction dir, bool coherent,
if (attrs & DMA_ATTR_PRIVILEGED)
prot |= IOMMU_PRIV;
trace_android_rvh_iommu_dma_info_to_prot(attrs, &prot);
switch (dir) {
case DMA_BIDIRECTIONAL:
return prot | IOMMU_READ | IOMMU_WRITE;
include/trace/hooks/iommu.h
+4
View File
@@ -23,6 +23,10 @@ DECLARE_RESTRICTED_HOOK(android_rvh_iommu_alloc_insert_iova,
TP_ARGS(iovad, size, limit_pfn, new_iova, size_aligned, ret),
1);
DECLARE_RESTRICTED_HOOK(android_rvh_iommu_dma_info_to_prot,
TP_PROTO(unsigned long attrs, int *prot),
TP_ARGS(attrs, prot), 1);
DECLARE_HOOK(android_vh_iommu_iovad_alloc_iova,
TP_PROTO(struct device *dev, struct iova_domain *iovad, dma_addr_t iova, size_t size),
TP_ARGS(dev, iovad, iova, size));