if_cs_ofisa.c revision 1.24 
1/*	$NetBSD: if_cs_ofisa.c,v 1.24 2009/09/22 16:44:08 tsutsui 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 1.24 2009/09/22 16:44:08 tsutsui 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
66static int	cs_ofisa_match(device_t, cfdata_t, void *);
67static void	cs_ofisa_attach(device_t, device_t, void *);
68
69CFATTACH_DECL_NEW(cs_ofisa, sizeof(struct cs_softc_isa),
70    cs_ofisa_match, cs_ofisa_attach, NULL, NULL);
71
72int
73cs_ofisa_match(device_t parent, cfdata_t 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(device_t parent, device_t self, void *aux)
95{
96	struct cs_softc_isa *isc = device_private(self);
97	struct cs_softc *sc = &isc->sc_cs;
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	sc->sc_dev = self;
109	isc->sc_ic = aa->ic;
110	sc->sc_iot = aa->iot;
111	sc->sc_memt = aa->memt;
112
113	/*
114	 * We're living on an OFW.  We have to ask the OFW what our
115	 * registers and interrupts properties look like.
116	 *
117	 * We expect:
118	 *
119	 *	1 i/o register region
120	 *	0 or 1 memory region
121	 *	1 interrupt
122	 *	0 or 1 DMA channel
123	 */
124
125	io_addr = mem_addr = -1;
126
127	n = ofisa_reg_get(aa->oba.oba_phandle, reg, 2);
128#ifdef _CS_OFISA_MD_REG_FIXUP
129	n = cs_ofisa_md_reg_fixup(parent, self, aux, reg, 2, n);
130#endif
131	if (n < 1 || n > 2) {
132		printf(": error getting register data\n");
133		return;
134	}
135
136	for (i = 0; i < n; i++) {
137		if (reg[i].type == OFISA_REG_TYPE_IO) {
138			if (io_addr != (bus_addr_t) -1) {
139				printf(": multiple I/O regions\n");
140				return;
141			}
142			if (reg[i].len != CS8900_IOSIZE) {
143				printf(": weird register size (%lu, expected %d)\n",
144				    (unsigned long)reg[i].len, CS8900_IOSIZE);
145				return;
146			}
147			io_addr = reg[i].addr;
148		} else {
149			if (mem_addr != (bus_addr_t) -1) {
150				printf(": multiple memory regions\n");
151				return;
152			}
153			if (reg[i].len != CS8900_MEMSIZE) {
154				printf(": weird register size (%lu, expected %d)\n",
155				    (unsigned long)reg[i].len, CS8900_MEMSIZE);
156				return;
157			}
158			mem_addr = reg[i].addr;
159		}
160	}
161
162	n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
163#ifdef _CS_OFISA_MD_INTR_FIXUP
164	n = cs_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n);
165#endif
166	if (n != 1) {
167		printf(": error getting interrupt data\n");
168		return;
169	}
170	sc->sc_irq = intr.irq;
171
172	if (CS8900_IRQ_ISVALID(sc->sc_irq) == 0) {
173		printf(": invalid IRQ %d\n", sc->sc_irq);
174		return;
175	}
176
177	isc->sc_drq = -1;
178	n = ofisa_dma_get(aa->oba.oba_phandle, &dma, 1);
179#ifdef _CS_OFISA_MD_DMA_FIXUP
180	n = cs_ofisa_md_dma_fixup(parent, self, aux, &dma, 1, n);
181#endif
182	if (n == 1)
183		isc->sc_drq = dma.drq;
184
185	if (io_addr == (bus_addr_t) -1) {
186		printf(": no I/O space\n");
187		return;
188	}
189	if (bus_space_map(sc->sc_iot, io_addr, CS8900_IOSIZE, 0,
190	    &sc->sc_ioh)) {
191		printf(": unable to map register space\n");
192		return;
193	}
194
195	if (mem_addr != (bus_addr_t) -1) {
196		if (bus_space_map(sc->sc_memt, mem_addr, CS8900_MEMSIZE, 0,
197		    &sc->sc_memh)) {
198			message = "unable to map memory space";
199		} else {
200			sc->sc_cfgflags |= CFGFLG_MEM_MODE;
201			sc->sc_pktpgaddr = mem_addr;
202		}
203	}
204
205	/* Dig MAC address out of the firmware. */
206	if (OF_getprop(aa->oba.oba_phandle, "mac-address", enaddr,
207	    sizeof(enaddr)) < 0) {
208		printf(": unable to get Ethernet address\n");
209		return;
210	}
211
212	/* Dig media out of the firmware. */
213	media = of_network_decode_media(aa->oba.oba_phandle, &nmedia,
214	    &defmedia);
215#ifdef _CS_OFISA_MD_MEDIA_FIXUP
216	media = cs_ofisa_md_media_fixup(parent, self, aux, media, &nmedia,
217	    &defmedia);
218#endif
219	if (media == NULL) {
220		printf(": unable to get media information\n");
221		return;
222	}
223
224	n = OF_getproplen(aa->oba.oba_phandle, "model");
225	if (n > 0) {
226		model = alloca(n);
227		if (OF_getprop(aa->oba.oba_phandle, "model", model, n) != n)
228			model = NULL;	/* Safe; alloca is on-stack */
229	}
230	if (model != NULL)
231		printf(": %s\n", model);
232	else
233		printf("\n");
234
235	if (message != NULL)
236		printf("%s: %s\n", device_xname(self), message);
237
238	if (defmedia == -1) {
239		aprint_error_dev(self, "unable to get default media\n");
240		defmedia = media[0];	/* XXX What to do? */
241	}
242
243	sc->sc_ih = isa_intr_establish(isc->sc_ic, sc->sc_irq, intr.share,
244	    IPL_NET, cs_intr, sc);
245	if (sc->sc_ih == NULL) {
246		aprint_error_dev(self, "unable to establish interrupt\n");
247		return;
248	}
249
250#ifdef _CS_OFISA_MD_CFGFLAGS_FIXUP
251	sc->sc_cfgflags |= cs_ofisa_md_cfgflags_fixup(parent, self, aux);
252#endif
253
254	sc->sc_dma_chipinit = cs_isa_dma_chipinit;
255	sc->sc_dma_attach = cs_isa_dma_attach;
256	sc->sc_dma_process_rx = cs_process_rx_dma;
257
258	cs_attach(sc, enaddr, media, nmedia, defmedia);
259
260	/* This is malloc'd. */
261	free(media, M_DEVBUF);
262}
263