1/*	$NetBSD: if_smsh_gxio.c,v 1.2 2009/11/29 10:08:15 kiyohara Exp $	*/
2/*
3 * Copyright (c) 2008 KIYOHARA Takashi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following 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 ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: if_smsh_gxio.c,v 1.2 2009/11/29 10:08:15 kiyohara Exp $");
30
31#include <sys/param.h>
32#include <sys/device.h>
33#include <sys/errno.h>
34#include <sys/bus.h>
35#include <sys/systm.h>
36
37#include <evbarm/gumstix/gumstixvar.h>
38
39#include <net/if.h>
40#include <net/if_ether.h>
41#include <net/if_media.h>
42
43#include <dev/mii/miivar.h>
44
45#include <dev/ic/lan9118var.h>
46#include <dev/ic/lan9118reg.h>
47
48#include "locators.h"
49
50
51static int smsh_gxio_match(device_t, struct cfdata *, void *);
52static void smsh_gxio_attach(device_t, device_t, void *);
53
54static int ether_serial_digit = 1;
55
56CFATTACH_DECL_NEW(smsh_gxio, sizeof(struct lan9118_softc),
57    smsh_gxio_match, smsh_gxio_attach, NULL, NULL);
58
59
60/* ARGSUSED */
61static int
62smsh_gxio_match(device_t parent, struct cfdata *match, void *aux)
63{
64	struct gxio_attach_args *gxa = aux;
65	bus_space_tag_t iot = gxa->gxa_iot;
66	bus_space_handle_t ioh;
67	uint32_t val;
68	int rv = 0;
69
70	/* Disallow wildcarded values. */
71	if (gxa->gxa_addr == GXIOCF_ADDR_DEFAULT)
72		return 0;
73	if (gxa->gxa_gpirq == GXIOCF_GPIRQ_DEFAULT)
74		return 0;
75
76	if (bus_space_map(iot, gxa->gxa_addr, LAN9118_IOSIZE, 0, &ioh) != 0)
77		return 0;
78
79	bus_space_write_4(iot, ioh, LAN9118_BYTE_TEST, 0);
80	val = bus_space_read_4(iot, ioh, LAN9118_BYTE_TEST);
81	if (val == LAN9118_BYTE_TEST_VALUE)
82		/* Assume we have an SMSC LAN9117 */
83		rv = 1;
84	if (ether_serial_digit > 15)
85		rv = 0;
86
87	bus_space_unmap(iot, ioh, LAN9118_IOSIZE);
88	return rv;
89}
90
91/* ARGSUSED */
92static void
93smsh_gxio_attach(device_t parent, device_t self, void *aux)
94{
95	struct lan9118_softc *sc = device_private(self);
96	struct gxio_attach_args *gxa = aux;
97	void *ih;
98
99	KASSERT(system_serial_high != 0 || system_serial_low != 0);
100
101	sc->sc_dev = self;
102
103	/* Map i/o space. */
104	if (bus_space_map(gxa->gxa_iot, gxa->gxa_addr, LAN9118_IOSIZE, 0,
105	    &sc->sc_ioh))
106		panic("smsh_gxio_attach: can't map i/o space");
107	sc->sc_iot = gxa->gxa_iot;
108
109	sc->sc_enaddr[0] = ((system_serial_high >> 8) & 0xfe) | 0x02;
110	sc->sc_enaddr[1] = system_serial_high;
111	sc->sc_enaddr[2] = system_serial_low >> 24;
112	sc->sc_enaddr[3] = system_serial_low >> 16;
113	sc->sc_enaddr[4] = system_serial_low >> 8;
114	sc->sc_enaddr[5] = (system_serial_low & 0xc0) |
115	    (1 << 4) | ((ether_serial_digit++) & 0x0f);
116	sc->sc_flags = LAN9118_FLAGS_NO_EEPROM;
117	if (lan9118_attach(sc) != 0) {
118		bus_space_unmap(sc->sc_iot, sc->sc_ioh, LAN9118_IOSIZE);
119		return;
120	}
121
122	/* Establish the interrupt handler. */
123	ih = gxio_intr_establish(gxa->gxa_sc,
124	    gxa->gxa_gpirq, IST_EDGE_FALLING, IPL_NET, lan9118_intr, sc);
125	if (ih == NULL) {
126		aprint_error_dev(self,
127		    "couldn't establish interrupt handler\n");
128		bus_space_unmap(sc->sc_iot, sc->sc_ioh, LAN9118_IOSIZE);
129		return;
130	}
131}
132