if_ed_sic.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2005, M. Warner Losh
5 * All rights reserved.
6 * Copyright (c) 1995, David Greenman
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice unmodified, this list of conditions, and the following
14 *    disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD: stable/11/sys/dev/ed/if_ed_sic.c 330897 2018-03-14 03:19:51Z eadler $");
34
35#include "opt_ed.h"
36
37#ifdef ED_SIC
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/sockio.h>
41#include <sys/mbuf.h>
42#include <sys/kernel.h>
43#include <sys/socket.h>
44#include <sys/syslog.h>
45
46#include <sys/bus.h>
47
48#include <machine/bus.h>
49#include <sys/rman.h>
50#include <machine/resource.h>
51
52#include <net/ethernet.h>
53#include <net/if.h>
54#include <net/if_arp.h>
55#include <net/if_dl.h>
56#include <net/if_mib.h>
57#include <net/if_media.h>
58
59#include <net/bpf.h>
60
61#include <dev/ed/if_edreg.h>
62#include <dev/ed/if_edvar.h>
63
64/*
65 * Probe and vendor-specific initialization routine for SIC boards
66 */
67int
68ed_probe_SIC(device_t dev, int port_rid, int flags)
69{
70	struct ed_softc *sc = device_get_softc(dev);
71	int	error;
72	int	i;
73	u_int	memsize;
74	u_long	pmem;
75	u_char	sum;
76
77	error = ed_alloc_port(dev, 0, ED_SIC_IO_PORTS);
78	if (error)
79		return (error);
80
81	sc->asic_offset = ED_SIC_ASIC_OFFSET;
82	sc->nic_offset  = ED_SIC_NIC_OFFSET;
83
84	memsize = 16384;
85	/* XXX Needs to allow different msize */
86	error = ed_alloc_memory(dev, 0, memsize);
87	if (error)
88		return (error);
89
90	sc->mem_start = 0;
91	sc->mem_size  = memsize;
92
93	pmem = rman_get_start(sc->mem_res);
94	error = ed_isa_mem_ok(dev, pmem, memsize);
95	if (error)
96		return (error);
97
98	/* Reset card to force it into a known state. */
99	ed_asic_outb(sc, 0, 0x00);
100	DELAY(100);
101
102	/*
103	 * Here we check the card ROM, if the checksum passes, and the
104	 * type code and ethernet address check out, then we know we have
105	 * an SIC card.
106	 */
107	ed_asic_outb(sc, 0, 0x81);
108	DELAY(100);
109
110	sum = bus_space_read_1(sc->mem_bst, sc->mem_bsh, 6);
111	for (i = 0; i < ETHER_ADDR_LEN; i++)
112		sum ^= (sc->enaddr[i] =
113		    bus_space_read_1(sc->mem_bst, sc->mem_bsh, i));
114#ifdef ED_DEBUG
115	device_printf(dev, "ed_probe_sic: got address %6D\n",
116	    sc->enaddr, ":");
117#endif
118	if (sum != 0)
119		return (ENXIO);
120	if ((sc->enaddr[0] | sc->enaddr[1] | sc->enaddr[2]) == 0)
121		return (ENXIO);
122
123	sc->vendor   = ED_VENDOR_SIC;
124	sc->type_str = "SIC";
125	sc->isa16bit = 0;
126	sc->cr_proto = 0;
127
128	/*
129	 * SIC RAM page 0x0000-0x3fff(or 0x7fff)
130	 */
131	ed_asic_outb(sc, 0, 0x80);
132	DELAY(100);
133
134	error = ed_clear_memory(dev);
135	if (error)
136		return (error);
137
138	sc->mem_shared = 1;
139	sc->mem_end = sc->mem_start + sc->mem_size;
140
141	/*
142	 * allocate one xmit buffer if < 16k, two buffers otherwise
143	 */
144	if ((sc->mem_size < 16384) || (flags & ED_FLAGS_NO_MULTI_BUFFERING))
145		sc->txb_cnt = 1;
146	else
147		sc->txb_cnt = 2;
148	sc->tx_page_start = 0;
149
150	sc->rec_page_start = sc->tx_page_start + ED_TXBUF_SIZE * sc->txb_cnt;
151	sc->rec_page_stop = sc->tx_page_start + sc->mem_size / ED_PAGE_SIZE;
152
153	sc->mem_ring = sc->mem_start + sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE;
154
155	sc->sc_write_mbufs = ed_shmem_write_mbufs;
156	return (0);
157}
158
159#endif /* ED_SIC */
160