drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h

File Facts

System

Linux kernel

Corpus path

drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h

Extension

.h

Size

1130 bytes

Lines

45

Domain

Driver Families

Bucket

drivers/iommu

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• struct qcom_smmu
• struct qcom_smmu_config
• struct qcom_smmu_match_data
• enum qcom_smmu_impl_reg_offset
• function qcom_smmu_tlb_sync_debug

Annotated Snippet

struct qcom_smmu {
	struct arm_smmu_device smmu;
	const struct qcom_smmu_match_data *data;
	bool bypass_quirk;
	u8 bypass_cbndx;
	u32 stall_enabled;
};

enum qcom_smmu_impl_reg_offset {
	QCOM_SMMU_TBU_PWR_STATUS,
	QCOM_SMMU_STATS_SYNC_INV_TBU_ACK,
	QCOM_SMMU_MMU2QSS_AND_SAFE_WAIT_CNTR,
};

struct qcom_smmu_config {
	const u32 *reg_offset;
};

struct qcom_smmu_match_data {
	const struct qcom_smmu_config *cfg;
	const struct arm_smmu_impl *impl;
	const struct arm_smmu_impl *adreno_impl;
	const struct of_device_id * const client_match;
};

irqreturn_t qcom_smmu_context_fault(int irq, void *dev);

#ifdef CONFIG_ARM_SMMU_QCOM_DEBUG
void qcom_smmu_tlb_sync_debug(struct arm_smmu_device *smmu);
int qcom_tbu_probe(struct platform_device *pdev);
#else
static inline void qcom_smmu_tlb_sync_debug(struct arm_smmu_device *smmu) { }
static inline int qcom_tbu_probe(struct platform_device *pdev) { return -EINVAL; }
#endif

#endif /* _ARM_SMMU_QCOM_H */

Annotation

• Detected declarations: `struct qcom_smmu`, `struct qcom_smmu_config`, `struct qcom_smmu_match_data`, `enum qcom_smmu_impl_reg_offset`, `function qcom_smmu_tlb_sync_debug`.
• Atlas domain: Driver Families / drivers/iommu.
• Implementation status: source implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.