if_an_pci.c revision 1.5 
1/*	$NetBSD: if_an_pci.c,v 1.5 2001/07/08 18:02:28 thorpej Exp $	*/
2
3/*
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Atsushi Onoe.
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 * PCI bus front-end for the Aironet PC4500/PC4800 Wireless LAN Adapter.
41 * Unlike WaveLAN, this adapter attached as PCI device using a PLX 9050
42 * PCI to "dumb bus" bridge chip.
43 */
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/mbuf.h>
48#include <sys/malloc.h>
49#include <sys/kernel.h>
50#include <sys/socket.h>
51#include <sys/ioctl.h>
52#include <sys/errno.h>
53#include <sys/device.h>
54#include <sys/callout.h>
55
56#include <machine/endian.h>
57
58#include <net/if.h>
59#include <net/if_dl.h>
60#include <net/if_media.h>
61#include <net/if_ether.h>
62#include <net/if_ieee80211.h>
63
64#include <machine/bus.h>
65#include <machine/intr.h>
66
67#include <dev/ic/anreg.h>
68#include <dev/ic/anvar.h>
69
70#include <dev/pci/pcivar.h>
71#include <dev/pci/pcireg.h>
72#include <dev/pci/pcidevs.h>
73
74#define	AN_PCI_PLX_IOBA		0x14	/* i/o base for PLX chip */
75#define	AN_PCI_IOBA		0x18	/* i/o base */
76
77struct an_pci_softc {
78	struct an_softc sc_an;		/* real "an" softc */
79
80	/* PCI-specific goo. */
81	void	*sc_ih;			/* interrupt handle */
82};
83
84int	an_pci_match __P((struct device *, struct cfdata *, void *));
85void	an_pci_attach __P((struct device *, struct device *, void *));
86
87struct cfattach an_pci_ca = {
88	sizeof(struct an_pci_softc), an_pci_match, an_pci_attach,
89};
90
91const struct an_pci_product {
92	u_int32_t	app_vendor;	/* PCI vendor ID */
93	u_int32_t	app_product;	/* PCI product ID */
94} an_pci_products[] = {
95	{ PCI_VENDOR_AIRONET,		PCI_PRODUCT_AIRONET_PC4xxx },
96	{ PCI_VENDOR_AIRONET,		PCI_PRODUCT_AIRONET_PC4500 },
97	{ PCI_VENDOR_AIRONET,		PCI_PRODUCT_AIRONET_PC4800 },
98	{ PCI_VENDOR_AIRONET,		PCI_PRODUCT_AIRONET_350 },
99	{ 0,				0			   }
100};
101
102int
103an_pci_match(struct device *parent, struct cfdata *match, void *aux)
104{
105	struct pci_attach_args *pa = aux;
106	const struct an_pci_product *app;
107
108	for (app = an_pci_products; app->app_vendor != 0; app++) {
109		if (PCI_VENDOR(pa->pa_id) == app->app_vendor &&
110		    PCI_PRODUCT(pa->pa_id) == app->app_product)
111			return 1;
112	}
113	return 0;
114}
115
116void
117an_pci_attach(struct device *parent, struct device *self, void *aux)
118{
119        struct pci_attach_args *pa = (struct pci_attach_args *)aux;
120	struct an_pci_softc *psc = (struct an_pci_softc *) self;
121	struct an_softc *sc = &psc->sc_an;
122        char devinfo[256];
123	char const *intrstr;
124	pci_intr_handle_t ih;
125	u_int32_t csr;
126
127        pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
128        printf(": %s\n", devinfo);
129
130        /* Map I/O registers */
131        if (pci_mapreg_map(pa, AN_PCI_IOBA, PCI_MAPREG_TYPE_IO, 0,
132	    &sc->an_btag, &sc->an_bhandle, NULL, NULL) != 0) {
133                printf("%s: unable to map registers\n", self->dv_xname);
134                return;
135        }
136
137        /* Enable the device. */
138        csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
139        pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
140                       csr | PCI_COMMAND_MASTER_ENABLE);
141
142	/* Map and establish the interrupt. */
143	if (pci_intr_map(pa, &ih)) {
144        	printf("%s: unable to map interrupt\n", self->dv_xname);
145		return;
146	}
147	intrstr = pci_intr_string(pa->pa_pc, ih);
148	psc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, an_intr, sc);
149	if (psc->sc_ih == NULL) {
150		printf("%s: unable to establish interrupt", self->dv_xname);
151		if (intrstr != NULL)
152			printf(" at %s", intrstr);
153		printf("\n");
154		return;
155	}
156	printf("%s: interrupting at %s\n", self->dv_xname, intrstr);
157	sc->sc_enabled = 1;
158
159	if (an_attach(sc) != 0) {
160		printf("%s: failed to attach controller\n", self->dv_xname);
161		pci_intr_disestablish(pa->pa_pc, psc->sc_ih);
162		bus_space_unmap(sc->an_btag, sc->an_bhandle, AN_IOSIZ);
163	}
164}
165