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
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