if_cs_ofisa.c revision 1.20 
1/*	$NetBSD: if_cs_ofisa.c,v 1.20 2009/03/14 21:04:21 dsl Exp $	*/
2
3/*-
4 * Copyright (c) 1998 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 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__KERNEL_RCSID(0, "$NetBSD: if_cs_ofisa.c,v 1.20 2009/03/14 21:04:21 dsl Exp $");
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/socket.h>
39#include <sys/device.h>
40#include <sys/malloc.h>
41
42#include "rnd.h"
43#if NRND > 0
44#include <sys/rnd.h>
45#endif
46
47#include <net/if.h>
48#include <net/if_ether.h>
49#include <net/if_media.h>
50#ifdef INET
51#include <netinet/in.h>
52#include <netinet/if_inarp.h>
53#endif
54
55#include <sys/bus.h>
56#include <sys/intr.h>
57
58#include <dev/ofw/openfirm.h>
59#include <dev/isa/isavar.h>
60#include <dev/ofisa/ofisavar.h>
61
62#include <dev/ic/cs89x0reg.h>
63#include <dev/ic/cs89x0var.h>
64#include <dev/isa/cs89x0isavar.h>
65
66int	cs_ofisa_match(struct device *, struct cfdata *, void *);
67void	cs_ofisa_attach(struct device *, struct device *, void *);
68
69CFATTACH_DECL(cs_ofisa, sizeof(struct cs_softc_isa),
70    cs_ofisa_match, cs_ofisa_attach, NULL, NULL);
71
72int
73cs_ofisa_match(struct device *parent, struct cfdata *cf, void *aux)
74{
75	struct ofisa_attach_args *aa = aux;
76	static const char *const compatible_strings[] = {
77		"CRUS,CS8900",
78		/* XXX CS8920, CS8920M? */
79		/* XXX PNP names? */
80		NULL,
81	};
82	int rv = 0;
83
84	if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
85		rv = 5;
86#ifdef _CS_OFISA_MD_MATCH
87	if (rv == 0)
88		rv = cs_ofisa_md_match(parent, cf, aux);
89#endif
90	return (rv);
91}
92
93void
94cs_ofisa_attach(struct device *parent, struct device *self, void *aux)
95{
96	struct cs_softc *sc = device_private(self);
97	struct cs_softc_isa *isc = (void *)sc;
98	struct ofisa_attach_args *aa = aux;
99	struct ofisa_reg_desc reg[2];
100	struct ofisa_intr_desc intr;
101	struct ofisa_dma_desc dma;
102	int i, n, *media, nmedia, defmedia;
103	bus_addr_t io_addr, mem_addr;
104	char *model = NULL;
105	const char *message = NULL;
106	u_int8_t enaddr[6];
107
108	isc->sc_ic = aa->ic;
109	sc->sc_iot = aa->iot;
110	sc->sc_memt = aa->memt;
111
112	/*
113	 * We're living on an OFW.  We have to ask the OFW what our
114	 * registers and interrupts properties look like.
115	 *
116	 * We expect:
117	 *
118	 *	1 i/o register region
119	 *	0 or 1 memory region
120	 *	1 interrupt
121	 *	0 or 1 DMA channel
122	 */
123
124	io_addr = mem_addr = -1;
125
126	n = ofisa_reg_get(aa->oba.oba_phandle, reg, 2);
127#ifdef _CS_OFISA_MD_REG_FIXUP
128	n = cs_ofisa_md_reg_fixup(parent, self, aux, reg, 2, n);
129#endif
130	if (n < 1 || n > 2) {
131		printf(": error getting register data\n");
132		return;
133	}
134
135	for (i = 0; i < n; i++) {
136		if (reg[i].type == OFISA_REG_TYPE_IO) {
137			if (io_addr != (bus_addr_t) -1) {
138				printf(": multiple I/O regions\n");
139				return;
140			}
141			if (reg[i].len != CS8900_IOSIZE) {
142				printf(": weird register size (%lu, expected %d)\n",
143				    (unsigned long)reg[i].len, CS8900_IOSIZE);
144				return;
145			}
146			io_addr = reg[i].addr;
147		} else {
148			if (mem_addr != (bus_addr_t) -1) {
149				printf(": multiple memory regions\n");
150				return;
151			}
152			if (reg[i].len != CS8900_MEMSIZE) {
153				printf(": weird register size (%lu, expected %d)\n",
154				    (unsigned long)reg[i].len, CS8900_MEMSIZE);
155				return;
156			}
157			mem_addr = reg[i].addr;
158		}
159	}
160
161	n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
162#ifdef _CS_OFISA_MD_INTR_FIXUP
163	n = cs_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n);
164#endif
165	if (n != 1) {
166		printf(": error getting interrupt data\n");
167		return;
168	}
169	sc->sc_irq = intr.irq;
170
171	if (CS8900_IRQ_ISVALID(sc->sc_irq) == 0) {
172		printf(": invalid IRQ %d\n", sc->sc_irq);
173		return;
174	}
175
176	isc->sc_drq = -1;
177	n = ofisa_dma_get(aa->oba.oba_phandle, &dma, 1);
178#ifdef _CS_OFISA_MD_DMA_FIXUP
179	n = cs_ofisa_md_dma_fixup(parent, self, aux, &dma, 1, n);
180#endif
181	if (n == 1)
182		isc->sc_drq = dma.drq;
183
184	if (io_addr == (bus_addr_t) -1) {
185		printf(": no I/O space\n");
186		return;
187	}
188	if (bus_space_map(sc->sc_iot, io_addr, CS8900_IOSIZE, 0,
189	    &sc->sc_ioh)) {
190		printf(": unable to map register space\n");
191		return;
192	}
193
194	if (mem_addr != (bus_addr_t) -1) {
195		if (bus_space_map(sc->sc_memt, mem_addr, CS8900_MEMSIZE, 0,
196		    &sc->sc_memh)) {
197			message = "unable to map memory space";
198		} else {
199			sc->sc_cfgflags |= CFGFLG_MEM_MODE;
200			sc->sc_pktpgaddr = mem_addr;
201		}
202	}
203
204	/* Dig MAC address out of the firmware. */
205	if (OF_getprop(aa->oba.oba_phandle, "mac-address", enaddr,
206	    sizeof(enaddr)) < 0) {
207		printf(": unable to get Ethernet address\n");
208		return;
209	}
210
211	/* Dig media out of the firmware. */
212	media = of_network_decode_media(aa->oba.oba_phandle, &nmedia,
213	    &defmedia);
214#ifdef _CS_OFISA_MD_MEDIA_FIXUP
215	media = cs_ofisa_md_media_fixup(parent, self, aux, media, &nmedia,
216	    &defmedia);
217#endif
218	if (media == NULL) {
219		printf(": unable to get media information\n");
220		return;
221	}
222
223	n = OF_getproplen(aa->oba.oba_phandle, "model");
224	if (n > 0) {
225		model = alloca(n);
226		if (OF_getprop(aa->oba.oba_phandle, "model", model, n) != n)
227			model = NULL;	/* Safe; alloca is on-stack */
228	}
229	if (model != NULL)
230		printf(": %s\n", model);
231	else
232		printf("\n");
233
234	if (message != NULL)
235		printf("%s: %s\n", device_xname(&sc->sc_dev), message);
236
237	if (defmedia == -1) {
238		aprint_error_dev(&sc->sc_dev, "unable to get default media\n");
239		defmedia = media[0];	/* XXX What to do? */
240	}
241
242	sc->sc_ih = isa_intr_establish(isc->sc_ic, sc->sc_irq, intr.share,
243	    IPL_NET, cs_intr, sc);
244	if (sc->sc_ih == NULL) {
245		aprint_error_dev(&sc->sc_dev, "unable to establish interrupt\n");
246		return;
247	}
248
249#ifdef _CS_OFISA_MD_CFGFLAGS_FIXUP
250	sc->sc_cfgflags |= cs_ofisa_md_cfgflags_fixup(parent, self, aux);
251#endif
252
253	sc->sc_dma_chipinit = cs_isa_dma_chipinit;
254	sc->sc_dma_attach = cs_isa_dma_attach;
255	sc->sc_dma_process_rx = cs_process_rx_dma;
256
257	cs_attach(sc, enaddr, media, nmedia, defmedia);
258
259	/* This is malloc'd. */
260	free(media, M_DEVBUF);
261}
262