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