2 * bfin_mac.h - some defines/structures for the Blackfin on-chip MAC.
4 * Copyright (c) 2005-2008 Analog Device, Inc.
6 * Licensed under the GPL-2 or later.
10 #define __BFIN_MAC_H__
13 #define RECV_BUFSIZE (0x614)
15 typedef struct ADI_DMA_CONFIG_REG {
16 u16 b_DMA_EN:1; /* 0 Enabled */
17 u16 b_WNR:1; /* 1 Direction */
18 u16 b_WDSIZE:2; /* 2:3 Transfer word size */
19 u16 b_DMA2D:1; /* 4 DMA mode */
20 u16 b_RESTART:1; /* 5 Retain FIFO */
21 u16 b_DI_SEL:1; /* 6 Data interrupt timing select */
22 u16 b_DI_EN:1; /* 7 Data interrupt enabled */
23 u16 b_NDSIZE:4; /* 8:11 Flex descriptor size */
24 u16 b_FLOW:3; /* 12:14Flow */
27 typedef struct adi_ether_frame_buffer {
28 u16 NoBytes; /* the no. of following bytes */
29 u8 Dest[6]; /* destination MAC address */
30 u8 Srce[6]; /* source MAC address */
31 u16 LTfield; /* length/type field */
32 u8 Data[0]; /* payload bytes */
33 } ADI_ETHER_FRAME_BUFFER;
36 typedef struct dma_descriptor {
37 struct dma_descriptor *NEXT_DESC_PTR;
39 ADI_DMA_CONFIG_REG CONFIG;
41 /* 10 bytes/struct in 12 bytes */
43 typedef struct adi_ether_buffer {
44 DMA_DESCRIPTOR Dma[2]; /* first for the frame, second for the status */
45 ADI_ETHER_FRAME_BUFFER *FrmData;/* pointer to data */
46 struct adi_ether_buffer *pNext; /* next buffer */
47 struct adi_ether_buffer *pPrev; /* prev buffer */
48 u16 IPHdrChksum; /* the IP header checksum */
49 u16 IPPayloadChksum; /* the IP header and payload checksum */
50 volatile u32 StatusWord; /* the frame status word */
52 /* 40 bytes/struct in 44 bytes */
54 static ADI_ETHER_BUFFER *SetupRxBuffer(int no);
55 static ADI_ETHER_BUFFER *SetupTxBuffer(int no);
57 static int bfin_EMAC_init(struct eth_device *dev, bd_t *bd);
58 static void bfin_EMAC_halt(struct eth_device *dev);
59 static int bfin_EMAC_send(struct eth_device *dev, volatile void *packet, int length);
60 static int bfin_EMAC_recv(struct eth_device *dev);
62 static void bfin_EMAC_setup_addr(bd_t *bd);