drivers/crypto/qce/dma.h

Source file repositories/reference/linux-study-clean/drivers/crypto/qce/dma.h

File Facts

System
Linux kernel
Corpus path
drivers/crypto/qce/dma.h
Extension
.h
Size
1333 bytes
Lines
48
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct qce_result_dump {
	u32 auth_iv[QCE_AUTHIV_REGS_CNT];
	u32 auth_byte_count[QCE_AUTH_BYTECOUNT_REGS_CNT];
	u32 encr_cntr_iv[QCE_CNTRIV_REGS_CNT];
	u32 status;
	u32 status2;
};

#define QCE_IGNORE_BUF_SZ	(2 * QCE_BAM_BURST_SIZE)
#define QCE_RESULT_BUF_SZ	\
		ALIGN(sizeof(struct qce_result_dump), QCE_BAM_BURST_SIZE)

struct qce_dma_data {
	struct dma_chan *txchan;
	struct dma_chan *rxchan;
	struct qce_result_dump *result_buf;
	void *ignore_buf;
};

int devm_qce_dma_request(struct device *dev, struct qce_dma_data *dma);
int qce_dma_prep_sgs(struct qce_dma_data *dma, struct scatterlist *sg_in,
		     int in_ents, struct scatterlist *sg_out, int out_ents,
		     dma_async_tx_callback cb, void *cb_param);
void qce_dma_issue_pending(struct qce_dma_data *dma);
int qce_dma_terminate_all(struct qce_dma_data *dma);
struct scatterlist *
qce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add,
		unsigned int max_len);

#endif /* _DMA_H_ */

Annotation

Implementation Notes