/*
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* Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
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*
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* Copyright (C) 2004, 2005
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* Cory T. Tusar, Videon Central, Inc., <ctusar@videon-central.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _EP93XX_ETH_H
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#define _EP93XX_ETH_H
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#include <net.h>
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/**
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* #define this to dump device status and queue info during initialization and
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* following errors.
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*/
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#undef EP93XX_MAC_DEBUG
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/**
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* Number of descriptor and status entries in our RX queues.
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* It must be power of 2 !
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*/
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#define NUMRXDESC PKTBUFSRX
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/**
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* Number of descriptor and status entries in our TX queues.
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*/
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#define NUMTXDESC 1
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/**
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* 944 = (1024 - 64) - 16, Fifo size - Minframesize - 16 (Chip FACT)
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*/
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#define TXSTARTMAX 944
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/**
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* Receive descriptor queue entry
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*/
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struct rx_descriptor {
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uint32_t word1;
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uint32_t word2;
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};
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/**
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* Receive status queue entry
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*/
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struct rx_status {
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uint32_t word1;
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uint32_t word2;
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};
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#define RX_STATUS_RWE(rx_status) ((rx_status->word1 >> 30) & 0x01)
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#define RX_STATUS_RFP(rx_status) ((rx_status->word1 >> 31) & 0x01)
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#define RX_STATUS_FRAME_LEN(rx_status) (rx_status->word2 & 0xFFFF)
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/**
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* Transmit descriptor queue entry
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*/
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struct tx_descriptor {
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uint32_t word1;
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uint32_t word2;
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};
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#define TX_DESC_EOF (1 << 31)
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/**
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* Transmit status queue entry
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*/
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struct tx_status {
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uint32_t word1;
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};
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#define TX_STATUS_TXWE(tx_status) (((tx_status)->word1 >> 30) & 0x01)
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#define TX_STATUS_TXFP(tx_status) (((tx_status)->word1 >> 31) & 0x01)
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/**
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* Transmit descriptor queue
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*/
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struct tx_descriptor_queue {
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struct tx_descriptor *base;
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struct tx_descriptor *current;
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struct tx_descriptor *end;
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};
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/**
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* Transmit status queue
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*/
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struct tx_status_queue {
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struct tx_status *base;
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volatile struct tx_status *current;
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struct tx_status *end;
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};
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/**
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* Receive descriptor queue
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*/
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struct rx_descriptor_queue {
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struct rx_descriptor *base;
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struct rx_descriptor *current;
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struct rx_descriptor *end;
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};
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/**
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* Receive status queue
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*/
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struct rx_status_queue {
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struct rx_status *base;
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volatile struct rx_status *current;
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struct rx_status *end;
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};
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/**
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* EP93xx MAC private data structure
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*/
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struct ep93xx_priv {
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struct rx_descriptor_queue rx_dq;
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struct rx_status_queue rx_sq;
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void *rx_buffer[NUMRXDESC];
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struct tx_descriptor_queue tx_dq;
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struct tx_status_queue tx_sq;
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struct mac_regs *regs;
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};
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#endif
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