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 #ifdef _KERNEL /* to avoid compile this decls with sbniconfig */ 67 68 struct sbni_softc { 69 struct ifnet *ifp; 70 device_t dev; 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 wch; 115 struct mtx lock; 116 117 struct sbni_softc *slave_sc; 118 119 #ifdef SBNI_DUAL_COMPOUND 120 struct sbni_softc *link; 121 #endif 122 }; 123 124 #define SBNI_LOCK(sc) mtx_lock(&(sc)->lock) 125 #define SBNI_UNLOCK(sc) mtx_unlock(&(sc)->lock) 126 #define SBNI_ASSERT_LOCKED(sc) mtx_assert(&(sc)->lock, MA_OWNED) 127 128 void sbni_intr(void *); 129 int sbni_probe(struct sbni_softc *); 130 int sbni_attach(struct sbni_softc *, int, struct sbni_flags); 131 void sbni_detach(struct sbni_softc *); 132 void sbni_release_resources(struct sbni_softc *); 133 134 extern u_int32_t next_sbni_unit; 135 136 #ifdef SBNI_DUAL_COMPOUND 137 void sbni_add(struct sbni_softc *); 138 struct sbni_softc *connect_to_master(struct sbni_softc *); 139 #endif 140 #endif /* _KERNEL */ 141 142 /* 143 * SBNI socket ioctl params 144 */ 145 #define SIOCGHWFLAGS _IOWR('i', 62, struct ifreq) /* get flags */ 146 #define SIOCSHWFLAGS _IOWR('i', 61, struct ifreq) /* set flags */ 147 #define SIOCGINSTATS _IOWR('i', 60, struct ifreq) /* get internal stats */ 148 #define SIOCRINSTATS _IOWR('i', 63, struct ifreq) /* reset internal stats */ 149 150 /* 151 * CRC-32 stuff 152 */ 153 #define CRC32(c,crc) (crc32tab[((size_t)(crc) ^ (c)) & 0xff] ^ (((crc) >> 8) & 0x00ffffff)) 154 /* CRC generator EDB88320 */ 155 /* CRC remainder 2144DF1C */ 156 /* CRC initial value 0 */ 157 #define CRC32_REMAINDER 0x2144df1c 158 #define CRC32_INITIAL 0x00000000 159