66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/*
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* bfin_mac.h - some defines/structures for the Blackfin on-chip MAC.
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*
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* Copyright (c) 2005-2008 Analog Device, Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#ifndef __BFIN_MAC_H__
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#define __BFIN_MAC_H__
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#define RECV_BUFSIZE (0x614)
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typedef struct ADI_DMA_CONFIG_REG {
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u16 b_DMA_EN:1; /* 0 Enabled */
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u16 b_WNR:1; /* 1 Direction */
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u16 b_WDSIZE:2; /* 2:3 Transfer word size */
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u16 b_DMA2D:1; /* 4 DMA mode */
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u16 b_RESTART:1; /* 5 Retain FIFO */
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u16 b_DI_SEL:1; /* 6 Data interrupt timing select */
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u16 b_DI_EN:1; /* 7 Data interrupt enabled */
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u16 b_NDSIZE:4; /* 8:11 Flex descriptor size */
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u16 b_FLOW:3; /* 12:14Flow */
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} ADI_DMA_CONFIG_REG;
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typedef struct adi_ether_frame_buffer {
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u16 NoBytes; /* the no. of following bytes */
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u8 Dest[6]; /* destination MAC address */
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u8 Srce[6]; /* source MAC address */
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u16 LTfield; /* length/type field */
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u8 Data[0]; /* payload bytes */
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} ADI_ETHER_FRAME_BUFFER;
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/* 16 bytes/struct */
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typedef struct dma_descriptor {
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struct dma_descriptor *NEXT_DESC_PTR;
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u32 START_ADDR;
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union {
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u16 CONFIG_DATA;
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ADI_DMA_CONFIG_REG CONFIG;
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};
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} DMA_DESCRIPTOR;
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/* 10 bytes/struct in 12 bytes */
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typedef struct adi_ether_buffer {
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DMA_DESCRIPTOR Dma[2]; /* first for the frame, second for the status */
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ADI_ETHER_FRAME_BUFFER *FrmData;/* pointer to data */
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struct adi_ether_buffer *pNext; /* next buffer */
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struct adi_ether_buffer *pPrev; /* prev buffer */
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u16 IPHdrChksum; /* the IP header checksum */
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u16 IPPayloadChksum; /* the IP header and payload checksum */
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volatile u32 StatusWord; /* the frame status word */
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} ADI_ETHER_BUFFER;
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/* 40 bytes/struct in 44 bytes */
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static ADI_ETHER_BUFFER *SetupRxBuffer(int no);
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static ADI_ETHER_BUFFER *SetupTxBuffer(int no);
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static int bfin_EMAC_init(struct eth_device *dev, bd_t *bd);
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static void bfin_EMAC_halt(struct eth_device *dev);
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static int bfin_EMAC_send(struct eth_device *dev, void *packet, int length);
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static int bfin_EMAC_recv(struct eth_device *dev);
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static int bfin_EMAC_setup_addr(struct eth_device *dev);
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#endif
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