1 /*- 2 * Copyright (c) 1997-2001 Granch, Ltd. All rights reserved. 3 * Author: Denis I.Timofeev <timofeev@granch.ru> 4 * 5 * Redistributon and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 /* 31 * SBNI12 definitions 32 */ 33 34 /* 35 * CONFIGURATION PARAMETER: 36 * 37 * Uncomment this if you want to use model SBNI12D-11/ISA with same IRQ 38 * for both first and second channels. 39 */ 40 #define SBNI_DUAL_COMPOUND 1 41 42 #define SBNI_DEBUG 0 43 44 #if SBNI_DEBUG 45 #define DP(A) A 46 #else 47 #define DP(A) 48 #endif 49 50 struct sbni_in_stats { 51 u_int32_t all_rx_number; 52 u_int32_t bad_rx_number; 53 u_int32_t timeout_number; 54 u_int32_t all_tx_number; 55 u_int32_t resend_tx_number; 56 }; 57 58 struct sbni_flags { 59 u_int mac_addr : 24; 60 u_int rxl : 4; 61 u_int rate : 2; 62 u_int fixed_rxl : 1; 63 u_int fixed_rate : 1; 64 }; 65 66 67 #ifdef _KERNEL /* to avoid compile this decls with sbniconfig */ 68 69 struct sbni_softc { 70 struct ifnet *ifp; 71 u_char enaddr[6]; 72 73 int io_rid; 74 struct resource *io_res; 75 int io_off; 76 77 int irq_rid; 78 struct resource *irq_res; 79 void *irq_handle; 80 81 struct mbuf *rx_buf_p; /* receive buffer ptr */ 82 struct mbuf *tx_buf_p; /* transmit buffer ptr */ 83 84 u_int pktlen; /* length of transmitting pkt */ 85 u_int framelen; /* current frame length */ 86 u_int maxframe; /* maximum valid frame length */ 87 u_int state; 88 u_int inppos; /* positions in rx/tx buffers */ 89 u_int outpos; /* positions in rx/tx buffers */ 90 91 /* transmitting frame number - from frames qty to 1 */ 92 u_int tx_frameno; 93 94 /* expected number of next receiving frame */ 95 u_int wait_frameno; 96 97 /* count of failed attempts to frame send - 32 attempts do before 98 error - while receiver tunes on opposite side of wire */ 99 u_int trans_errors; 100 101 /* idle time; send pong when limit exceeded */ 102 u_int timer_ticks; 103 104 /* fields used for receive level autoselection */ 105 int delta_rxl; 106 u_int cur_rxl_index; 107 u_int timeout_rxl; 108 u_int32_t cur_rxl_rcvd; 109 u_int32_t prev_rxl_rcvd; 110 111 struct sbni_csr1 csr1; /* current value of CSR1 */ 112 struct sbni_in_stats in_stats; /* internal statistics */ 113 114 struct callout_handle wch; 115 116 struct sbni_softc *slave_sc; 117 118 #ifdef SBNI_DUAL_COMPOUND 119 struct sbni_softc *link; 120 #endif 121 }; 122 123 void sbni_intr(void *); 124 int sbni_probe(struct sbni_softc *); 125 void sbni_attach(struct sbni_softc *, int, struct sbni_flags); 126 127 extern u_int32_t next_sbni_unit; 128 129 #ifdef SBNI_DUAL_COMPOUND 130 extern struct sbni_softc *sbni_headlist; 131 132 struct sbni_softc *connect_to_master(struct sbni_softc *); 133 #endif 134 #endif /* _KERNEL */ 135 136 /* 137 * SBNI socket ioctl params 138 */ 139 #define SIOCGHWFLAGS _IOWR('i', 62, struct ifreq) /* get flags */ 140 #define SIOCSHWFLAGS _IOWR('i', 61, struct ifreq) /* set flags */ 141 #define SIOCGINSTATS _IOWR('i', 60, struct ifreq) /* get internal stats */ 142 #define SIOCRINSTATS _IOWR('i', 63, struct ifreq) /* reset internal stats */ 143 144 145 /* 146 * CRC-32 stuff 147 */ 148 #define CRC32(c,crc) (crc32tab[((size_t)(crc) ^ (c)) & 0xff] ^ (((crc) >> 8) & 0x00ffffff)) 149 /* CRC generator EDB88320 */ 150 /* CRC remainder 2144DF1C */ 151 /* CRC initial value 0 */ 152 #define CRC32_REMAINDER 0x2144df1c 153 #define CRC32_INITIAL 0x00000000 154