Annotation of sys/dev/pci/if_an_pci.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: if_an_pci.c,v 1.16 2006/03/10 00:27:56 jsg Exp $ */
2:
3: /*
4: * Copyright (c) 1997, 1998, 1999
5: * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by Bill Paul.
18: * 4. Neither the name of the author nor the names of any co-contributors
19: * may be used to endorse or promote products derived from this software
20: * without specific prior written permission.
21: *
22: * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25: * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32: * THE POSSIBILITY OF SUCH DAMAGE.
33: *
34: * $FreeBSD: src/sys/dev/an/if_an_pci.c,v 1.1 2000/01/14 20:40:56 wpaul Exp $
35: */
36:
37: /*
38: * This is a PCI shim for the Aironet PC4500/4800 wireless network
39: * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
40: * which all have basically the same interface. The ISA and PCI cards
41: * are actually bridge adapters with PCMCIA cards inserted into them,
42: * however they appear as normal PCI or ISA devices to the host.
43: *
44: * All we do here is handle the PCI match and attach and set up an
45: * interrupt handler entry point. The PCI version of the card uses
46: * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
47: * multiple PCI address space mappings. The primary mapping at PCI
48: * register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
49: * The I/O address of the Aironet is actually at register 0x18, which
50: * is the local bus mapping register for bus space 0. There are also
51: * registers for additional register spaces at registers 0x1C and
52: * 0x20, but these are unused in the Aironet devices. To find out
53: * more, you need a datasheet for the 9050 from PLX, but you have
54: * to go through their sales office to get it. Bleh.
55: */
56:
57: #include <sys/param.h>
58: #include <sys/systm.h>
59: #include <sys/device.h>
60: #include <sys/timeout.h>
61: #include <sys/socket.h>
62: #include <sys/tree.h>
63:
64: #include <net/if.h>
65: #include <net/if_dl.h>
66: #include <net/if_media.h>
67:
68: #include <netinet/in.h>
69: #include <netinet/if_ether.h>
70:
71: #include <net80211/ieee80211_radiotap.h>
72: #include <net80211/ieee80211_var.h>
73:
74: #include <machine/bus.h>
75: #include <machine/intr.h>
76:
77: #include <dev/pci/pcireg.h>
78: #include <dev/pci/pcivar.h>
79: #include <dev/pci/pcidevs.h>
80:
81: #include <dev/ic/anreg.h>
82: #include <dev/ic/anvar.h>
83:
84: #define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */
85: #define AN_PCI_LOIO 0x18 /* Aironet iobase */
86:
87: int an_pci_match(struct device *, void *, void *);
88: void an_pci_attach(struct device *, struct device *, void *);
89:
90: struct cfattach an_pci_ca = {
91: sizeof (struct an_softc), an_pci_match, an_pci_attach
92: };
93:
94: const struct pci_matchid an_pci_devices[] = {
95: { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PCI352 },
96: { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4500 },
97: { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4800 },
98: { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4800_1 },
99: };
100:
101: int
102: an_pci_match(struct device *parent, void *match, void *aux)
103: {
104: return (pci_matchbyid((struct pci_attach_args *)aux, an_pci_devices,
105: sizeof(an_pci_devices)/sizeof(an_pci_devices[0])));
106: }
107:
108: void
109: an_pci_attach(struct device *parent, struct device *self, void *aux)
110: {
111: struct an_softc *sc = (struct an_softc *)self;
112: struct pci_attach_args *pa = aux;
113: pci_intr_handle_t ih;
114: bus_space_handle_t ioh;
115: bus_space_tag_t iot = pa->pa_iot;
116: pci_chipset_tag_t pc = pa->pa_pc;
117: const char *intrstr;
118:
119: /* Map the I/O ports. */
120: if (pci_mapreg_map(pa, AN_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
121: &iot, &ioh, NULL, NULL, 0) != 0) {
122: printf(": can't map I/O space\n");
123: return;
124: }
125: sc->sc_iot = iot;
126: sc->sc_ioh = ioh;
127:
128: /* Map and establish the interrupt. */
129: if (pci_intr_map(pa, &ih)) {
130: printf("\n%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
131: return;
132: }
133: intrstr = pci_intr_string(pc, ih);
134: sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, an_intr, sc,
135: sc->sc_dev.dv_xname);
136: if (sc->sc_ih == NULL) {
137: printf("\n%s: couldn't establish interrupt",
138: sc->sc_dev.dv_xname);
139: if (intrstr != NULL)
140: printf(" at %s", intrstr);
141: printf("\n");
142: return;
143: }
144: printf(": %s", intrstr);
145:
146: sc->sc_enabled = 1;
147:
148: an_attach(sc);
149: }
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