1 /* 2 * bfin_mac.h - some defines/structures for the Blackfin on-chip MAC. 3 * 4 * Copyright (c) 2005-2008 Analog Device, Inc. 5 * 6 * Licensed under the GPL-2 or later. 7 */ 8 9 #ifndef __BFIN_MAC_H__ 10 #define __BFIN_MAC_H__ 11 12 #define RECV_BUFSIZE (0x614) 13 14 typedef struct ADI_DMA_CONFIG_REG { 15 u16 b_DMA_EN:1; /* 0 Enabled */ 16 u16 b_WNR:1; /* 1 Direction */ 17 u16 b_WDSIZE:2; /* 2:3 Transfer word size */ 18 u16 b_DMA2D:1; /* 4 DMA mode */ 19 u16 b_RESTART:1; /* 5 Retain FIFO */ 20 u16 b_DI_SEL:1; /* 6 Data interrupt timing select */ 21 u16 b_DI_EN:1; /* 7 Data interrupt enabled */ 22 u16 b_NDSIZE:4; /* 8:11 Flex descriptor size */ 23 u16 b_FLOW:3; /* 12:14Flow */ 24 } ADI_DMA_CONFIG_REG; 25 26 typedef struct adi_ether_frame_buffer { 27 u16 NoBytes; /* the no. of following bytes */ 28 u8 Dest[6]; /* destination MAC address */ 29 u8 Srce[6]; /* source MAC address */ 30 u16 LTfield; /* length/type field */ 31 u8 Data[0]; /* payload bytes */ 32 } ADI_ETHER_FRAME_BUFFER; 33 /* 16 bytes/struct */ 34 35 typedef struct dma_descriptor { 36 struct dma_descriptor *NEXT_DESC_PTR; 37 u32 START_ADDR; 38 union { 39 u16 CONFIG_DATA; 40 ADI_DMA_CONFIG_REG CONFIG; 41 }; 42 } DMA_DESCRIPTOR; 43 /* 10 bytes/struct in 12 bytes */ 44 45 typedef struct adi_ether_buffer { 46 DMA_DESCRIPTOR Dma[2]; /* first for the frame, second for the status */ 47 ADI_ETHER_FRAME_BUFFER *FrmData;/* pointer to data */ 48 struct adi_ether_buffer *pNext; /* next buffer */ 49 struct adi_ether_buffer *pPrev; /* prev buffer */ 50 u16 IPHdrChksum; /* the IP header checksum */ 51 u16 IPPayloadChksum; /* the IP header and payload checksum */ 52 volatile u32 StatusWord; /* the frame status word */ 53 } ADI_ETHER_BUFFER; 54 /* 40 bytes/struct in 44 bytes */ 55 56 static ADI_ETHER_BUFFER *SetupRxBuffer(int no); 57 static ADI_ETHER_BUFFER *SetupTxBuffer(int no); 58 59 static int bfin_EMAC_init(struct eth_device *dev, bd_t *bd); 60 static void bfin_EMAC_halt(struct eth_device *dev); 61 static int bfin_EMAC_send(struct eth_device *dev, volatile void *packet, int length); 62 static int bfin_EMAC_recv(struct eth_device *dev); 63 static int bfin_EMAC_setup_addr(struct eth_device *dev); 64 65 #endif 66