if_tlp_eisa.c revision 1.12 
1/*	$NetBSD: if_tlp_eisa.c,v 1.12 2004/08/23 05:50:02 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by the NetBSD
22 *	Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 *    contributors may be used to endorse or promote products derived
25 *    from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40/*
41 * EISA bus front-end for the Digital Semiconductor ``Tulip'' (21x4x)
42 * Ethernet controller family driver.
43 */
44
45#include <sys/cdefs.h>
46__KERNEL_RCSID(0, "$NetBSD: if_tlp_eisa.c,v 1.12 2004/08/23 05:50:02 thorpej Exp $");
47
48#include "opt_inet.h"
49#include "opt_ns.h"
50#include "bpfilter.h"
51
52#include <sys/param.h>
53#include <sys/systm.h>
54#include <sys/mbuf.h>
55#include <sys/malloc.h>
56#include <sys/kernel.h>
57#include <sys/socket.h>
58#include <sys/ioctl.h>
59#include <sys/errno.h>
60#include <sys/device.h>
61
62#include <machine/endian.h>
63
64#include <net/if.h>
65#include <net/if_dl.h>
66#include <net/if_media.h>
67#include <net/if_ether.h>
68
69#if NBPFILTER > 0
70#include <net/bpf.h>
71#endif
72
73#ifdef INET
74#include <netinet/in.h>
75#include <netinet/if_inarp.h>
76#endif
77
78#ifdef NS
79#include <netns/ns.h>
80#include <netns/ns_if.h>
81#endif
82
83#include <machine/bus.h>
84#include <machine/intr.h>
85
86#include <dev/mii/miivar.h>
87#include <dev/mii/mii_bitbang.h>
88
89#include <dev/ic/tulipreg.h>
90#include <dev/ic/tulipvar.h>
91
92#include <dev/eisa/eisareg.h>
93#include <dev/eisa/eisavar.h>
94#include <dev/eisa/eisadevs.h>
95
96#include <dev/pci/pcireg.h>
97
98/*
99 * DE425 configuration registers; literal offsets from CSR base.
100 * This is effectively the 21040 PCI configuration space interleaved
101 * into the CSR space (CSRs are space 16 bytes on the DE425).
102 *
103 * What a cool address decoder hack they must have on that board...
104 */
105#define	DE425_CFID		0x08	/* Configuration ID */
106#define	DE425_CFCS		0x0c	/* Configuration Command-Status */
107#define	DE425_CFRV		0x18	/* Configuration Revision */
108#define	DE425_CFLT		0x1c	/* Configuration Latency Timer */
109#define	DE425_CBIO		0x28	/* Configuration Base I/O Address */
110#define	DE425_CFDA		0x2c	/* Configuration Driver Area */
111#define	DE425_ENETROM		0xc90	/* Offset in I/O space for ENETROM */
112#define	DE425_CFG0		0xc88	/* IRQ Configuration Register */
113
114struct tulip_eisa_softc {
115	struct tulip_softc sc_tulip;	/* real Tulip softc */
116
117	/* EISA-specific goo. */
118	void	*sc_ih;			/* interrupt handle */
119};
120
121static int	tlp_eisa_match(struct device *, struct cfdata *, void *);
122static void	tlp_eisa_attach(struct device *, struct device *, void *);
123
124CFATTACH_DECL(tlp_eisa, sizeof(struct tulip_eisa_softc),
125    tlp_eisa_match, tlp_eisa_attach, NULL, NULL);
126
127static const int tlp_eisa_irqs[] = { 5, 9, 10, 11 };
128
129static const struct tulip_eisa_product {
130	const char	*tep_eisaid;	/* EISA ID */
131	const char	*tep_name;	/* device name */
132	tulip_chip_t	tep_chip;	/* base Tulip chip type */
133} tlp_eisa_products[] = {
134	{ "DEC4250",			"DEC DE425",
135	  TULIP_CHIP_DE425 },
136
137	{ NULL,				NULL,
138	  TULIP_CHIP_INVALID },
139};
140
141static const struct tulip_eisa_product *
142tlp_eisa_lookup(const struct eisa_attach_args *ea)
143{
144	const struct tulip_eisa_product *tep;
145
146	for (tep = tlp_eisa_products;
147	     tep->tep_chip != TULIP_CHIP_INVALID; tep++)
148		if (strcmp(ea->ea_idstring, tep->tep_eisaid) == 0)
149			return (tep);
150	return (NULL);
151}
152
153static int
154tlp_eisa_match(struct device *parent, struct cfdata *match, void *aux)
155{
156	struct eisa_attach_args *ea = aux;
157
158	if (tlp_eisa_lookup(ea) != NULL)
159		return (1);
160
161	return (0);
162}
163
164static void
165tlp_eisa_attach(struct device *parent, struct device *self, void *aux)
166{
167	static const u_int8_t testpat[] =
168	    { 0xff, 0, 0x55, 0xaa, 0xff, 0, 0x55, 0xaa };
169	struct tulip_eisa_softc *esc = (void *) self;
170	struct tulip_softc *sc = &esc->sc_tulip;
171	struct eisa_attach_args *ea = aux;
172	eisa_chipset_tag_t ec = ea->ea_ec;
173	eisa_intr_handle_t ih;
174	bus_space_tag_t iot = ea->ea_iot;
175	bus_space_handle_t ioh;
176	const char *intrstr;
177	const struct tulip_eisa_product *tep;
178	u_int8_t enaddr[ETHER_ADDR_LEN], tmpbuf[sizeof(testpat)];
179	u_int32_t val;
180	int irq, i, cnt;
181
182	/*
183	 * Map the device.
184	 */
185	if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot),
186	    EISA_SLOT_SIZE, 0, &ioh)) {
187		printf(": unable to map I/O space\n");
188		return;
189	}
190
191	sc->sc_st = iot;
192	sc->sc_sh = ioh;
193
194	tep = tlp_eisa_lookup(ea);
195	if (tep == NULL) {
196		printf("\n");
197		panic("tlp_eisa_attach: impossible");
198	}
199	sc->sc_chip = tep->tep_chip;
200
201	/*
202	 * DE425's registers are 16 bytes long; the PCI configuration
203	 * space registers are interleaved in the I/O space.
204	 */
205	sc->sc_regshift = 4;
206
207	/*
208	 * No power management hooks.
209	 */
210	sc->sc_flags |= TULIPF_ENABLED;
211
212	/*
213	 * CBIO must map the EISA slot, and I/O access and Bus Mastering
214	 * must be enabled.
215	 */
216	bus_space_write_4(iot, ioh, DE425_CBIO, EISA_SLOT_ADDR(ea->ea_slot));
217	bus_space_write_4(iot, ioh, DE425_CFCS,
218	    bus_space_read_4(iot, ioh, DE425_CFCS) |
219	    PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MASTER_ENABLE);
220
221	/*
222	 * Get revision info.
223	 */
224	sc->sc_rev = bus_space_read_4(iot, ioh, DE425_CFRV) & 0xff;
225
226	printf(": %s Ethernet, pass %d.%d\n",
227	    tep->tep_name, (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf);
228
229	sc->sc_dmat = ea->ea_dmat;
230
231	/*
232	 * EISA doesn't have a cache line register.
233	 */
234	sc->sc_cacheline = 0;
235
236	/*
237	 * Find the beginning of the Ethernet Address ROM.
238	 */
239	for (i = 0, cnt = 0; i < sizeof(testpat) && cnt < 32; cnt++) {
240		tmpbuf[i] = bus_space_read_1(iot, ioh, DE425_ENETROM);
241		if (tmpbuf[i] == testpat[i])
242			i++;
243		else
244			i = 0;
245	}
246
247	/*
248	 * ...and now read the contents of the Ethernet Address ROM.
249	 */
250	sc->sc_srom = malloc(32, M_DEVBUF, M_WAITOK|M_ZERO);
251	for (i = 0; i < 32; i++)
252		sc->sc_srom[i] = bus_space_read_1(iot, ioh, DE425_ENETROM);
253
254	/*
255	 * None of the DE425 boards have the new-style SROMs.
256	 */
257	if (tlp_parse_old_srom(sc, enaddr) == 0) {
258		printf("%s: unable to decode old-style SROM\n",
259		    sc->sc_dev.dv_xname);
260		return;
261	}
262
263	/*
264	 * All DE425 boards use the 21040 media switch.
265	 */
266	sc->sc_mediasw = &tlp_21040_mediasw;
267
268	/*
269	 * Figure out which IRQ we want to use, and determine of it's
270	 * edge- or level-triggered.
271	 */
272	val = bus_space_read_4(iot, ioh, DE425_CFG0);
273	irq = tlp_eisa_irqs[(val >> 1) & 0x03];
274
275	/*
276	 * Map and establish our interrupt.
277	 */
278	if (eisa_intr_map(ec, irq, &ih)) {
279		printf("%s: unable to map interrupt (%u)\n",
280		    sc->sc_dev.dv_xname, irq);
281		return;
282	}
283	intrstr = eisa_intr_string(ec, ih);
284	esc->sc_ih = eisa_intr_establish(ec, ih,
285	    (val & 0x01) ? IST_EDGE : IST_LEVEL, IPL_NET, tlp_intr, sc);
286	if (esc->sc_ih == NULL) {
287		printf("%s: unable to establish interrupt",
288		    sc->sc_dev.dv_xname);
289		if (intrstr != NULL)
290			printf(" at %s", intrstr);
291		printf("\n");
292		return;
293	}
294	if (intrstr != NULL)
295		printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname,
296		    intrstr);
297
298	/*
299	 * Finish off the attach.
300	 */
301	tlp_attach(sc, enaddr);
302}
303