drivers/crypto/intel/qat/qat_common/qat_compression.h

File Facts

System

Linux kernel

Corpus path

drivers/crypto/intel/qat/qat_common/qat_compression.h

Extension

.h

Size

846 bytes

Lines

37

Domain

Driver Families

Bucket

drivers/crypto

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/list.h
• linux/types.h
• adf_accel_devices.h
• qat_algs_send.h

Detected Declarations

• struct qat_compression_instance
• function adf_hw_dev_has_compression

Annotated Snippet

struct qat_compression_instance {
	struct adf_etr_ring_data *dc_tx;
	struct adf_etr_ring_data *dc_rx;
	struct adf_accel_dev *accel_dev;
	struct list_head list;
	unsigned long state;
	int id;
	atomic_t refctr;
	struct qat_instance_backlog backlog;
	struct adf_dc_data *dc_data;
};

static inline bool adf_hw_dev_has_compression(struct adf_accel_dev *accel_dev)
{
	struct adf_hw_device_data *hw_device = accel_dev->hw_device;
	u32 mask = ~hw_device->accel_capabilities_mask;

	if (mask & ADF_ACCEL_CAPABILITIES_COMPRESSION)
		return false;

	return true;
}

#endif

Annotation

• Immediate include surface: `linux/list.h`, `linux/types.h`, `adf_accel_devices.h`, `qat_algs_send.h`.
• Detected declarations: `struct qat_compression_instance`, `function adf_hw_dev_has_compression`.
• Atlas domain: Driver Families / drivers/crypto.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.