if_tra_mca.c revision 1.2 
1/*	$NetBSD: if_tra_mca.c,v 1.2 2005/04/03 11:36:32 jdolecek Exp $	*/
2
3/*-
4 * Copyright (c) 2004 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jaromir Dolecek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following 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 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the NetBSD
21 *	Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39/*
40 * Driver for Tiara LANCard/E II and friends adapted from if_ate_mca.c
41 * by Dave J. Barnes 2004.
42 */
43
44#include <sys/cdefs.h>
45__KERNEL_RCSID(0, "$NetBSD: if_tra_mca.c,v 1.2 2005/04/03 11:36:32 jdolecek Exp $");
46
47#include <sys/param.h>
48#include <sys/systm.h>
49#include <sys/device.h>
50#include <sys/socket.h>
51#include <sys/syslog.h>
52
53#include <net/if.h>
54#include <net/if_ether.h>
55#include <net/if_media.h>
56
57#include <machine/bus.h>
58#include <machine/intr.h>
59
60#include <dev/ic/mb86950reg.h>
61#include <dev/ic/mb86950var.h>
62
63#include <dev/mca/mcavar.h>
64#include <dev/mca/mcadevs.h>
65
66int	tiara_mca_match __P((struct device *, struct cfdata *, void *));
67void	tiara_mca_attach __P((struct device *, struct device *, void *));
68
69#define TIARA_NPORTS 0x20 /* 32 */
70#define TIARA_PROM_ID 24 /* offset to mac addr stored in prom */
71
72struct tiara_softc {
73	struct	mb86950_softc sc_mb86950;	/* real "mb86950" softc */
74
75	/* MCA-specific goo. */
76	void	*sc_ih;				/* interrupt cookie */
77};
78
79CFATTACH_DECL(tra_mca, sizeof(struct tiara_softc),
80    tiara_mca_match, tiara_mca_attach, NULL, NULL);
81
82static const struct tiara_mca_product {
83	u_int32_t	tra_prodid;	/* MCA product ID */
84	const char	*tra_name;	/* device name */
85} tiara_mca_products[] = {
86	{ MCA_PRODUCT_TIARA,	"Tiara LANCard/E2"},
87	{ MCA_PRODUCT_TIARA_TP,	"Tiara LANCard/E2 TP"},
88	{ MCA_PRODUCT_SMC3016,  "SMC 3016/MC"},
89	{ 0	}
90};
91
92static const struct tiara_mca_product *tiara_mca_lookup __P((u_int32_t));
93
94static const struct tiara_mca_product *
95tiara_mca_lookup(id)
96	u_int32_t id;
97{
98	const struct tiara_mca_product *tra_p;
99
100	for (tra_p = tiara_mca_products; tra_p->tra_name != NULL; tra_p++)
101		if (id == tra_p->tra_prodid)
102			return (tra_p);
103
104	return (NULL);
105}
106
107int
108tiara_mca_match(parent, match, aux)
109	struct device *parent;
110	struct cfdata *match;
111	void *aux;
112{
113	struct mca_attach_args *ma = (struct mca_attach_args *) aux;
114
115	if (tiara_mca_lookup(ma->ma_id) != NULL)
116		return (1);
117
118	return (0);
119}
120
121/* see POS diagrams below for explanation */
122static const int tiara_irq[] = {
123	3, 4, 7, 9
124};
125static const int smc_iobase[] = {
126	0x300, 0x340, 0x360, 0x1980, 0x2000, 0x5680, 0x5900, 0x8080
127};
128static const int smc_irq[] = {
129	9, 10, 11, 15, 3, 5, 7, 4
130};
131
132void
133tiara_mca_attach(parent, self, aux)
134	struct device *parent, *self;
135	void *aux;
136{
137	struct tiara_softc *isc = (struct tiara_softc *)self;
138	struct mb86950_softc *sc = &isc->sc_mb86950;
139	struct mca_attach_args *ma = aux;
140	bus_space_tag_t iot = ma->ma_iot;
141	bus_space_handle_t ioh;
142	u_int8_t myea[ETHER_ADDR_LEN];
143	int pos2;
144	int iobase = 0, irq = 0;
145	const struct tiara_mca_product *tra_p;
146
147	pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
148
149	tra_p = tiara_mca_lookup(ma->ma_id);
150
151	switch (tra_p->tra_prodid) {
152
153	case MCA_PRODUCT_TIARA:
154	case MCA_PRODUCT_TIARA_TP:
155		/*
156		 * POS register 2: (adf pos0)
157		 * 7 6 5 4 3 2 1 0
158		 * \_____/ \_/  \ \__ enable: 0=disabled, 1=enabled
159		 *       \   \   \___ boot rom: 0=disabled, 1=enabled
160		 *        \   \______ IRQ 00=3 01=4 10=7 11=9
161		 *         \_________ Base I/O Port
162		 *			0000=0x1200 0001=0x1220 ... 1110=0x13c0 1111=0x13e0
163		 *
164		 * POS register 3: (adf pos1) not used
165		 * POS register 4: (adf pos2) not used
166		 *
167		 * POS register 5: (adf pos3) ignored
168		 *
169		 * 7 6 5 4 3 2 1 0
170		 * 1 1 0 X \____/
171		 *              \____EPROM Address
172		 */
173		iobase = 0x1200 + ((pos2 & 0xf0) << 1);
174		irq = tiara_irq[((pos2 & 0x0c) >> 2)];
175
176		/* XXX SWAG for number pkts. */
177		/* My Tiara LANCard has 128K memory ?!? */
178		sc->txb_num_pkt = 4;
179		sc->rxb_num_pkt = (65535 - 8192 - 4) / 64;
180		/* XXX                       */
181
182		break;
183
184	case MCA_PRODUCT_SMC3016:
185		/*
186		 * POS register 2: (adf pos0)
187		 * 7 6 5 4 3 2 1 0
188		 * \_____/ \___/  \__ enable: 0=disabled, 1=enabled
189		 *       \     \_____ I/O Address (see ioaddr table)
190		 *        \__________ IRQ (see irq table)
191		 *
192		 * POS register 3: (adf pos1) ignored
193		 * 7 6 5 4 3 2 1 0
194		 * X X X X \____/
195		 *              \____EPROM Address (0000 = not used)
196		 */
197		iobase = smc_iobase[((pos2 & 0x0e) >> 1)];
198		if ((pos2 & 0x80) != 0)
199			irq = smc_irq[((pos2 & 0x70) >> 4)];
200		else {
201			printf("%s: unsupported irq selected\n",
202			    sc->sc_dev.dv_xname);
203			return;
204		}
205
206		/* XXX SWAG for number pkts. */
207		/* The SMC3016 has a 12K rx buffer and a 4k tx buffer */
208		sc->txb_num_pkt = 2;
209		sc->rxb_num_pkt = (12288 - 4) / 64;
210		/* XXX                       */
211
212		break;
213	}
214
215
216#ifdef DIAGNOSTIC
217	tra_p = tiara_mca_lookup(ma->ma_id);
218	if (tra_p == NULL) {
219		printf("\n%s: where did the card go?\n", sc->sc_dev.dv_xname);
220		return;
221	}
222#endif
223
224	printf(" slot %d ports %#x-%#x irq %d: %s\n", ma->ma_slot + 1,iobase, iobase + TIARA_NPORTS, irq, tra_p->tra_name);
225
226	/* Map i/o space. */
227	if (bus_space_map(iot, iobase, TIARA_NPORTS, 0, &ioh)) {
228		printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
229		return;
230	}
231
232	sc->sc_bst = iot;
233	sc->sc_bsh = ioh;
234
235	/* Get ethernet address from PROM */
236	bus_space_read_region_1(iot, ioh, TIARA_PROM_ID, myea, ETHER_ADDR_LEN);
237
238	/* This interface is always enabled. */
239	/* XXX
240	sc->sc_stat |= NIC_STAT_ENABLED;
241	*/
242
243	/*
244	 * Do generic MB86950 attach.
245	 */
246	mb86950_attach(sc, myea);
247
248
249	mb86950_config(sc, NULL, 0, 0);
250
251	/* Establish the interrupt handler. */
252	isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET,
253			mb86950_intr, sc);
254	if (isc->sc_ih == NULL) {
255		printf("%s: couldn't establish interrupt handler\n",
256		    sc->sc_dev.dv_xname);
257		return;
258	}
259}
260