drivers/atm/eni.h

1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* drivers/atm/eni.h - Efficient Networks ENI155P device driver declarations */
4 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
28 #define TX_DMA_BUF	100		/* should be enough for 64 kB */
33 #define ENI_ZEROES_SIZE	  4		/* need that many DMA-able zero bytes */
42 	void __iomem *send;		/* base, 0 if unused */
45 	unsigned long tx_pos;		/* current TX write position */
46 	unsigned long words;		/* size of TX queue */
47 	int index;			/* TX channel number */
50 	struct sk_buff_head backlog;	/* queue of waiting TX buffers */
59 	struct eni_tx *tx;		/* TXer, NULL if none */  member
62 	int txing;			/* number of pending TX bytes */
70 	/*-------------------------------- spinlock */
74 	/*-------------------------------- base pointers into Midway address
78 	void __iomem *reg;		/* register base */
79 	void __iomem *ram;		/* RAM base */
82 	void __iomem *tx_dma;		/* TX DMA queue */
84 	/*-------------------------------- TX part */
85 	struct eni_tx tx[NR_CHAN];	/* TX channels */  member
87 	struct sk_buff_head tx_queue;	/* PDUs currently being TX DMAed*/
96 	/*-------------------------------- RX part */
101 	struct sk_buff_head rx_queue;	/* PDUs currently being RX-DMAed */
104 	/*-------------------------------- statistics */
106 	/*-------------------------------- memory management */
107 	unsigned long base_diff;	/* virtual-real base address */
111 	/*-------------------------------- ENI links */
113 	/*-------------------------------- general information */
121 #define ENI_DEV(d) ((struct eni_dev *) (d)->dev_data)
122 #define ENI_VCC(d) ((struct eni_vcc *) (d)->dev_data)
132 #define ENI_PRV_SIZE(skb) (((struct eni_skb_prv *) (skb)->cb)->size)
133 #define ENI_PRV_POS(skb) (((struct eni_skb_prv *) (skb)->cb)->pos)
134 #define ENI_PRV_PADDR(skb) (((struct eni_skb_prv *) (skb)->cb)->paddr)