xref: /netbsd-src/sys/dev/pci/if_an_pci.c (revision 13d4bb4cc874de96add7fc4227d38a1d656b03d1)
1 /*	$NetBSD: if_an_pci.c,v 1.38 2022/09/25 17:52:25 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  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 /*
33  * PCI bus front-end for the Aironet PC4500/PC4800 Wireless LAN Adapter.
34  * Unlike WaveLAN, this adapter attached as PCI device using a PLX 9050
35  * PCI to "dumb bus" bridge chip.
36  */
37 
38 #include <sys/cdefs.h>
39 __KERNEL_RCSID(0, "$NetBSD: if_an_pci.c,v 1.38 2022/09/25 17:52:25 thorpej Exp $");
40 
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/mbuf.h>
44 #include <sys/kernel.h>
45 #include <sys/socket.h>
46 #include <sys/ioctl.h>
47 #include <sys/errno.h>
48 #include <sys/device.h>
49 #include <sys/callout.h>
50 
51 #include <machine/endian.h>
52 
53 #include <net/if.h>
54 #include <net/if_dl.h>
55 #include <net/if_media.h>
56 #include <net/if_ether.h>
57 
58 #include <net80211/ieee80211_netbsd.h>
59 #include <net80211/ieee80211_var.h>
60 
61 #include <sys/bus.h>
62 #include <sys/intr.h>
63 
64 #include <dev/ic/anreg.h>
65 #include <dev/ic/anvar.h>
66 
67 #include <dev/pci/pcivar.h>
68 #include <dev/pci/pcireg.h>
69 #include <dev/pci/pcidevs.h>
70 
71 #define	AN_PCI_PLX_IOBA		0x14	/* i/o base for PLX chip */
72 #define AN_PCI_IOBA PCI_BAR(2)	/* i/o base */
73 
74 struct an_pci_softc {
75 	struct an_softc sc_an;		/* real "an" softc */
76 	pci_chipset_tag_t sc_pct;
77 	pcitag_t sc_pcitag;
78 
79 	/* PCI-specific goo. */
80 	void	*sc_ih;			/* interrupt handle */
81 };
82 
83 static int	an_pci_match(device_t, cfdata_t, void *);
84 static void	an_pci_attach(device_t, device_t, void *);
85 
86 CFATTACH_DECL_NEW(an_pci, sizeof(struct an_pci_softc),
87     an_pci_match, an_pci_attach, NULL, NULL);
88 
89 static const struct an_pci_product {
90 	u_int32_t	app_vendor;	/* PCI vendor ID */
91 	u_int32_t	app_product;	/* PCI product ID */
92 } an_pci_products[] = {
93 	{ PCI_VENDOR_AIRONET,		PCI_PRODUCT_AIRONET_PC4xxx },
94 	{ PCI_VENDOR_AIRONET,		PCI_PRODUCT_AIRONET_PC4500 },
95 	{ PCI_VENDOR_AIRONET,		PCI_PRODUCT_AIRONET_PC4800 },
96 	{ PCI_VENDOR_AIRONET,		PCI_PRODUCT_AIRONET_PCI350 },
97 	{ PCI_VENDOR_AIRONET,		PCI_PRODUCT_AIRONET_MPI350 },
98 	{ 0,				0			   }
99 };
100 
101 static int
an_pci_match(device_t parent,cfdata_t match,void * aux)102 an_pci_match(device_t parent, cfdata_t match, void *aux)
103 {
104 	struct pci_attach_args *pa = aux;
105 	const struct an_pci_product *app;
106 
107 	for (app = an_pci_products; app->app_vendor != 0; app++) {
108 		if (PCI_VENDOR(pa->pa_id) == app->app_vendor &&
109 		    PCI_PRODUCT(pa->pa_id) == app->app_product)
110 			return 1;
111 	}
112 	return 0;
113 }
114 
115 static void
an_pci_attach(device_t parent,device_t self,void * aux)116 an_pci_attach(device_t parent, device_t self, void *aux)
117 {
118 	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
119 	struct an_pci_softc *psc = device_private(self);
120 	struct an_softc *sc = &psc->sc_an;
121 	char const *intrstr;
122 	pci_intr_handle_t ih;
123 	bus_size_t iosize;
124 	u_int32_t csr;
125 	char intrbuf[PCI_INTRSTR_LEN];
126 
127 	sc->sc_dev = self;
128 	psc->sc_pct = pa->pa_pc;
129 	psc->sc_pcitag = pa->pa_tag;
130 
131 	pci_aprint_devinfo(pa, "802.11 controller");
132 
133 	/* Map I/O registers */
134 	if (pci_mapreg_map(pa, AN_PCI_IOBA, PCI_MAPREG_TYPE_IO, 0,
135 	    &sc->sc_iot, &sc->sc_ioh, NULL, &iosize) != 0) {
136 		aprint_error_dev(self, "unable to map registers\n");
137 		return;
138 	}
139 
140 	/* Enable the device. */
141 	csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
142 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
143 	    csr | PCI_COMMAND_MASTER_ENABLE);
144 
145 	/* Map and establish the interrupt. */
146 	if (pci_intr_map(pa, &ih)) {
147 		aprint_error_dev(self, "unable to map interrupt\n");
148 		return;
149 	}
150 	intrstr = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf));
151 	psc->sc_ih = pci_intr_establish_xname(pa->pa_pc, ih, IPL_NET, an_intr,
152 	    sc, device_xname(self));
153 	if (psc->sc_ih == NULL) {
154 		aprint_error_dev(self, "unable to establish interrupt");
155 		if (intrstr != NULL)
156 			aprint_error(" at %s", intrstr);
157 		aprint_error("\n");
158 		return;
159 	}
160 	aprint_normal_dev(self, "interrupting at %s\n", intrstr);
161 	sc->sc_enabled = 1;
162 
163 	if (an_attach(sc) != 0) {
164 		aprint_error_dev(self, "failed to attach controller\n");
165 		pci_intr_disestablish(pa->pa_pc, psc->sc_ih);
166 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, iosize);
167 	}
168 
169 	if (pmf_device_register(self, NULL, NULL))
170 		pmf_class_network_register(self, &sc->sc_if);
171 	else
172 		aprint_error_dev(self, "couldn't establish power handler\n");
173 }
174