drivers/infiniband/hw/efa/efa.h

Source file repositories/reference/linux-study-clean/drivers/infiniband/hw/efa/efa.h

File Facts

System
Linux kernel
Corpus path
drivers/infiniband/hw/efa/efa.h
Extension
.h
Size
5357 bytes
Lines
198
Domain
Driver Families
Bucket
drivers/infiniband
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 efa_irq {
	irq_handler_t handler;
	void *data;
	u32 irqn;
	u32 vector;
	cpumask_t affinity_hint_mask;
	char name[EFA_IRQNAME_SIZE];
};

/* Don't use anything other than atomic64 */
struct efa_stats {
	atomic64_t alloc_pd_err;
	atomic64_t create_qp_err;
	atomic64_t create_cq_err;
	atomic64_t reg_mr_err;
	atomic64_t alloc_ucontext_err;
	atomic64_t create_ah_err;
	atomic64_t mmap_err;
	atomic64_t keep_alive_rcvd;
};

struct efa_dev {
	struct ib_device ibdev;
	struct efa_com_dev edev;
	struct pci_dev *pdev;
	struct efa_com_get_device_attr_result dev_attr;

	u64 reg_bar_addr;
	u64 reg_bar_len;
	u64 mem_bar_addr;
	u64 mem_bar_len;
	u64 db_bar_addr;
	u64 db_bar_len;

	u32 num_irq_vectors;
	u32 admin_msix_vector_idx;
	struct efa_irq admin_irq;

	struct efa_stats stats;

	/* Array of completion EQs */
	struct efa_eq *eqs;
	u32 neqs;

	/* Only stores CQs with interrupts enabled */
	struct xarray cqs_xa;
};

struct efa_ucontext {
	struct ib_ucontext ibucontext;
	u16 uarn;
};

struct efa_pd {
	struct ib_pd ibpd;
	u16 pdn;
};

struct efa_mr_interconnect_info {
	u16 recv_ic_id;
	u16 rdma_read_ic_id;
	u16 rdma_recv_ic_id;
	u8 recv_ic_id_valid : 1;
	u8 rdma_read_ic_id_valid : 1;
	u8 rdma_recv_ic_id_valid : 1;
};

struct efa_mr {
	struct ib_mr ibmr;
	struct ib_umem *umem;
	struct efa_mr_interconnect_info ic_info;
};

struct efa_cq {
	struct ib_cq ibcq;
	struct efa_ucontext *ucontext;
	dma_addr_t dma_addr;
	void *cpu_addr;
	struct rdma_user_mmap_entry *mmap_entry;
	struct rdma_user_mmap_entry *db_mmap_entry;
	size_t size;
	u16 cq_idx;
	/* NULL when no interrupts requested */
	struct efa_eq *eq;
	struct ib_umem *umem;
};

struct efa_qp {
	struct ib_qp ibqp;
	dma_addr_t rq_dma_addr;

Annotation

Implementation Notes