drivers/net/wan/fsl_ucc_hdlc.h

Source file repositories/reference/linux-study-clean/drivers/net/wan/fsl_ucc_hdlc.h

File Facts

System
Linux kernel
Corpus path
drivers/net/wan/fsl_ucc_hdlc.h
Extension
.h
Size
3023 bytes
Lines
146
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 ucc_hdlc_param {
	__be16 riptr;
	__be16 tiptr;
	__be16 res0;
	__be16 mrblr;
	__be32 rstate;
	__be32 rbase;
	__be16 rbdstat;
	__be16 rbdlen;
	__be32 rdptr;
	__be32 tstate;
	__be32 tbase;
	__be16 tbdstat;
	__be16 tbdlen;
	__be32 tdptr;
	__be32 rbptr;
	__be32 tbptr;
	__be32 rcrc;
	__be32 res1;
	__be32 tcrc;
	__be32 res2;
	__be32 res3;
	__be32 c_mask;
	__be32 c_pres;
	__be16 disfc;
	__be16 crcec;
	__be16 abtsc;
	__be16 nmarc;
	__be32 max_cnt;
	__be16 mflr;
	__be16 rfthr;
	__be16 rfcnt;
	__be16 hmask;
	__be16 haddr1;
	__be16 haddr2;
	__be16 haddr3;
	__be16 haddr4;
	__be16 ts_tmp;
	__be16 tmp_mb;
};

struct ucc_hdlc_private {
	struct ucc_tdm	*utdm;
	struct ucc_tdm_info *ut_info;
	struct ucc_fast_private *uccf;
	struct device *dev;
	struct net_device *ndev;
	struct napi_struct napi;
	struct ucc_fast __iomem *uf_regs;	/* UCC Fast registers */
	struct ucc_hdlc_param __iomem *ucc_pram;
	u16 tsa;
	bool hdlc_busy;
	bool loopback;
	bool hdlc_bus;

	u8 *tx_buffer;
	u8 *rx_buffer;
	dma_addr_t dma_tx_addr;
	dma_addr_t dma_rx_addr;

	struct qe_bd *tx_bd_base;
	struct qe_bd *rx_bd_base;
	dma_addr_t dma_tx_bd;
	dma_addr_t dma_rx_bd;
	struct qe_bd *curtx_bd;
	struct qe_bd *currx_bd;
	struct qe_bd *dirty_tx;
	u16 currx_bdnum;

	struct sk_buff **tx_skbuff;
	struct sk_buff **rx_skbuff;
	u16 skb_curtx;
	u16 skb_currx;
	unsigned short skb_dirtytx;

	unsigned short tx_ring_size;
	unsigned short rx_ring_size;
	s32 ucc_pram_offset;

	unsigned short encoding;
	unsigned short parity;
	unsigned short hmask;
	u32 clocking;
	spinlock_t lock;	/* lock for Tx BD and Tx buffer */
#ifdef CONFIG_PM
	struct ucc_hdlc_param *ucc_pram_bak;
	u32 gumr;
	u8 guemr;
	u32 cmxsi1cr_l, cmxsi1cr_h;
	u32 cmxsi1syr;

Annotation

Implementation Notes