drivers/net/ethernet/broadcom/bnge/bnge_rmem.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/broadcom/bnge/bnge_rmem.h
Extension
.h
Size
5421 bytes
Lines
203
Domain
Driver Families
Bucket
drivers/net
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 bnge_ring_mem_info {
	/* Number of pages to next level */
	int			nr_pages;
	int			page_size;
	u16			flags;
#define BNGE_RMEM_VALID_PTE_FLAG	1
#define BNGE_RMEM_RING_PTE_FLAG		2
#define BNGE_RMEM_USE_FULL_PAGE_FLAG	4

	u16			depth;

	void			**pg_arr;
	dma_addr_t		*dma_arr;

	__le64			*pg_tbl;
	dma_addr_t		dma_pg_tbl;

	int			vmem_size;
	void			**vmem;

	struct bnge_ctx_mem_type	*ctx_mem;
};

/* The hardware supports certain page sizes.
 * Use the supported page sizes to allocate the rings.
 */
#if (PAGE_SHIFT < 12)
#define BNGE_PAGE_SHIFT	12
#elif (PAGE_SHIFT <= 13)
#define BNGE_PAGE_SHIFT	PAGE_SHIFT
#elif (PAGE_SHIFT < 16)
#define BNGE_PAGE_SHIFT	13
#else
#define BNGE_PAGE_SHIFT	16
#endif
#define BNGE_PAGE_SIZE	(1 << BNGE_PAGE_SHIFT)
/* The RXBD length is 16-bit so we can only support page sizes < 64K */
#if (PAGE_SHIFT > 15)
#define BNGE_RX_PAGE_SHIFT 15
#else
#define BNGE_RX_PAGE_SHIFT PAGE_SHIFT
#endif
#define MAX_CTX_PAGES	(BNGE_PAGE_SIZE / 8)
#define MAX_CTX_TOTAL_PAGES	(MAX_CTX_PAGES * MAX_CTX_PAGES)

struct bnge_ctx_pg_info {
	u32		entries;
	u32		nr_pages;
	void		*ctx_pg_arr[MAX_CTX_PAGES];
	dma_addr_t	ctx_dma_arr[MAX_CTX_PAGES];
	struct bnge_ring_mem_info ring_mem;
	struct bnge_ctx_pg_info **ctx_pg_tbl;
};

#define BNGE_MAX_TQM_SP_RINGS		1
#define BNGE_MAX_TQM_FP_RINGS		8
#define BNGE_MAX_TQM_RINGS		\
	(BNGE_MAX_TQM_SP_RINGS + BNGE_MAX_TQM_FP_RINGS)
#define BNGE_BACKING_STORE_CFG_LEGACY_LEN	256
#define BNGE_SET_CTX_PAGE_ATTR(attr)					\
do {									\
	if (BNGE_PAGE_SIZE == 0x2000)					\
		attr = FUNC_BACKING_STORE_CFG_REQ_SRQ_PG_SIZE_PG_8K;	\
	else if (BNGE_PAGE_SIZE == 0x10000)				\
		attr = FUNC_BACKING_STORE_CFG_REQ_QPC_PG_SIZE_PG_64K;	\
	else								\
		attr = FUNC_BACKING_STORE_CFG_REQ_QPC_PG_SIZE_PG_4K;	\
} while (0)

#define BNGE_CTX_MRAV_AV_SPLIT_ENTRY	0

#define BNGE_CTX_QP	\
	FUNC_BACKING_STORE_QCAPS_V2_REQ_TYPE_QP
#define BNGE_CTX_SRQ	\
	FUNC_BACKING_STORE_QCAPS_V2_REQ_TYPE_SRQ
#define BNGE_CTX_CQ	\
	FUNC_BACKING_STORE_QCAPS_V2_REQ_TYPE_CQ
#define BNGE_CTX_VNIC	\
	FUNC_BACKING_STORE_QCAPS_V2_REQ_TYPE_VNIC
#define BNGE_CTX_STAT	\
	FUNC_BACKING_STORE_QCAPS_V2_REQ_TYPE_STAT
#define BNGE_CTX_STQM	\
	FUNC_BACKING_STORE_QCAPS_V2_REQ_TYPE_SP_TQM_RING
#define BNGE_CTX_FTQM	\
	FUNC_BACKING_STORE_QCAPS_V2_REQ_TYPE_FP_TQM_RING
#define BNGE_CTX_MRAV	\
	FUNC_BACKING_STORE_QCAPS_V2_REQ_TYPE_MRAV
#define BNGE_CTX_TIM	\
	FUNC_BACKING_STORE_QCAPS_V2_REQ_TYPE_TIM
#define BNGE_CTX_TCK	\

Annotation

Implementation Notes