Matthias Kaehlcke | 594d57d | 2010-01-31 17:39:49 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> |
| 3 | * |
| 4 | * Copyright (C) 2004, 2005 |
| 5 | * Cory T. Tusar, Videon Central, Inc., <ctusar@videon-central.com> |
| 6 | * |
| 7 | * See file CREDITS for list of people who contributed to this |
| 8 | * project. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License as |
| 12 | * published by the Free Software Foundation; either version 2 of |
| 13 | * the License, or (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 23 | * MA 02111-1307 USA |
| 24 | * |
| 25 | */ |
| 26 | |
| 27 | #ifndef _EP93XX_ETH_H |
| 28 | #define _EP93XX_ETH_H |
| 29 | |
| 30 | #include <net.h> |
| 31 | |
| 32 | /** |
| 33 | * #define this to dump device status and queue info during initialization and |
| 34 | * following errors. |
| 35 | */ |
| 36 | #undef EP93XX_MAC_DEBUG |
| 37 | |
| 38 | /** |
| 39 | * Number of descriptor and status entries in our RX queues. |
| 40 | * It must be power of 2 ! |
| 41 | */ |
| 42 | #define NUMRXDESC PKTBUFSRX |
| 43 | |
| 44 | /** |
| 45 | * Number of descriptor and status entries in our TX queues. |
| 46 | */ |
| 47 | #define NUMTXDESC 1 |
| 48 | |
| 49 | /** |
| 50 | * 944 = (1024 - 64) - 16, Fifo size - Minframesize - 16 (Chip FACT) |
| 51 | */ |
| 52 | #define TXSTARTMAX 944 |
| 53 | |
| 54 | /** |
| 55 | * Receive descriptor queue entry |
| 56 | */ |
| 57 | struct rx_descriptor { |
| 58 | uint32_t word1; |
| 59 | uint32_t word2; |
| 60 | }; |
| 61 | |
| 62 | /** |
| 63 | * Receive status queue entry |
| 64 | */ |
| 65 | struct rx_status { |
| 66 | uint32_t word1; |
| 67 | uint32_t word2; |
| 68 | }; |
| 69 | |
| 70 | #define RX_STATUS_RWE(rx_status) ((rx_status->word1 >> 30) & 0x01) |
| 71 | #define RX_STATUS_RFP(rx_status) ((rx_status->word1 >> 31) & 0x01) |
| 72 | #define RX_STATUS_FRAME_LEN(rx_status) (rx_status->word2 & 0xFFFF) |
| 73 | |
| 74 | /** |
| 75 | * Transmit descriptor queue entry |
| 76 | */ |
| 77 | struct tx_descriptor { |
| 78 | uint32_t word1; |
| 79 | uint32_t word2; |
| 80 | }; |
| 81 | |
| 82 | #define TX_DESC_EOF (1 << 31) |
| 83 | |
| 84 | /** |
| 85 | * Transmit status queue entry |
| 86 | */ |
| 87 | struct tx_status { |
| 88 | uint32_t word1; |
| 89 | }; |
| 90 | |
| 91 | #define TX_STATUS_TXWE(tx_status) (((tx_status)->word1 >> 30) & 0x01) |
| 92 | #define TX_STATUS_TXFP(tx_status) (((tx_status)->word1 >> 31) & 0x01) |
| 93 | |
| 94 | /** |
| 95 | * Transmit descriptor queue |
| 96 | */ |
| 97 | struct tx_descriptor_queue { |
| 98 | struct tx_descriptor *base; |
| 99 | struct tx_descriptor *current; |
| 100 | struct tx_descriptor *end; |
| 101 | }; |
| 102 | |
| 103 | /** |
| 104 | * Transmit status queue |
| 105 | */ |
| 106 | struct tx_status_queue { |
| 107 | struct tx_status *base; |
| 108 | volatile struct tx_status *current; |
| 109 | struct tx_status *end; |
| 110 | }; |
| 111 | |
| 112 | /** |
| 113 | * Receive descriptor queue |
| 114 | */ |
| 115 | struct rx_descriptor_queue { |
| 116 | struct rx_descriptor *base; |
| 117 | struct rx_descriptor *current; |
| 118 | struct rx_descriptor *end; |
| 119 | }; |
| 120 | |
| 121 | /** |
| 122 | * Receive status queue |
| 123 | */ |
| 124 | struct rx_status_queue { |
| 125 | struct rx_status *base; |
| 126 | volatile struct rx_status *current; |
| 127 | struct rx_status *end; |
| 128 | }; |
| 129 | |
| 130 | /** |
| 131 | * EP93xx MAC private data structure |
| 132 | */ |
| 133 | struct ep93xx_priv { |
| 134 | struct rx_descriptor_queue rx_dq; |
| 135 | struct rx_status_queue rx_sq; |
| 136 | void *rx_buffer[NUMRXDESC]; |
| 137 | |
| 138 | struct tx_descriptor_queue tx_dq; |
| 139 | struct tx_status_queue tx_sq; |
| 140 | |
| 141 | struct mac_regs *regs; |
| 142 | }; |
| 143 | |
| 144 | #endif |