1/* $NetBSD: if_bwi_pci.c,v 1.15 2016/07/07 06:55:41 msaitoh Exp $ */
2/* $OpenBSD: if_bwi_pci.c,v 1.6 2008/02/14 22:10:02 brad Exp $ */
3
4/*
5 * Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/*
21 * Broadcom AirForce BCM43xx IEEE 802.11b/g wireless network driver
22 * PCI front end
23 */
24
25
26#include <sys/cdefs.h>
27__KERNEL_RCSID(0, "$NetBSD: if_bwi_pci.c,v 1.15 2016/07/07 06:55:41 msaitoh Exp $");
28
29#include <sys/param.h>
30#include <sys/callout.h>
31#include <sys/device.h>
32#include <sys/kernel.h>
33#include <sys/malloc.h>
34#include <sys/mbuf.h>
35#include <sys/socket.h>
36#include <sys/sockio.h>
37#include <sys/systm.h>
38
39#include <sys/bus.h>
40
41#include <net/if.h>
42#include <net/if_dl.h>
43#include <net/if_ether.h>
44#include <net/if_media.h>
45
46#include <net80211/ieee80211_var.h>
47#include <net80211/ieee80211_amrr.h>
48#include <net80211/ieee80211_radiotap.h>
49
50#include <dev/ic/bwivar.h>
51
52#include <dev/pci/pcireg.h>
53#include <dev/pci/pcivar.h>
54#include <dev/pci/pcidevs.h>
55
56/* Base Address Register */
57#define BWI_PCI_BAR0 PCI_BAR(0)
58
59static int bwi_pci_match(device_t, cfdata_t, void *);
60static void bwi_pci_attach(device_t, device_t, void *);
61static int bwi_pci_detach(device_t, int);
62static void bwi_pci_conf_write(void *, uint32_t, uint32_t);
63static uint32_t bwi_pci_conf_read(void *, uint32_t);
64
65struct bwi_pci_softc {
66 struct bwi_softc psc_bwi;
67
68 pci_chipset_tag_t psc_pc;
69 pcitag_t psc_pcitag;
70
71 bus_size_t psc_mapsize;
72};
73
74CFATTACH_DECL_NEW(bwi_pci, sizeof(struct bwi_pci_softc),
75 bwi_pci_match, bwi_pci_attach, bwi_pci_detach, NULL);
76
77static int
78bwi_pci_match(device_t parent, cfdata_t match, void *aux)
79{
80 struct pci_attach_args *pa = aux;
81
82 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_BROADCOM)
83 return (0);
84
85 switch (PCI_PRODUCT(pa->pa_id)) {
86 case PCI_PRODUCT_BROADCOM_BCM4303:
87 case PCI_PRODUCT_BROADCOM_BCM4306:
88 case PCI_PRODUCT_BROADCOM_BCM4306_2:
89 case PCI_PRODUCT_BROADCOM_BCM4307:
90 case PCI_PRODUCT_BROADCOM_BCM4309:
91 case PCI_PRODUCT_BROADCOM_BCM4311:
92 case PCI_PRODUCT_BROADCOM_BCM4312:
93 case PCI_PRODUCT_BROADCOM_BCM4318:
94 case PCI_PRODUCT_BROADCOM_BCM4319:
95 case PCI_PRODUCT_BROADCOM_BCM4322:
96 case PCI_PRODUCT_BROADCOM_BCM43XG:
97 case PCI_PRODUCT_BROADCOM_BCM4328:
98 return (1);
99 }
100
101 return (0);
102}
103
104static void
105bwi_pci_attach(device_t parent, device_t self, void *aux)
106{
107 struct bwi_pci_softc *psc = device_private(self);
108 struct pci_attach_args *pa = aux;
109 struct bwi_softc *sc = &psc->psc_bwi;
110 const char *intrstr = NULL;
111 pci_intr_handle_t ih;
112 pcireg_t memtype, reg;
113 int error = 0;
114 char intrbuf[PCI_INTRSTR_LEN];
115
116 aprint_naive("\n");
117 aprint_normal(": Broadcom Wireless\n");
118
119 sc->sc_dev = self;
120 sc->sc_dmat = pa->pa_dmat;
121 psc->psc_pc = pa->pa_pc;
122 psc->psc_pcitag = pa->pa_tag;
123
124 /* map control / status registers */
125 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, BWI_PCI_BAR0);
126 switch (memtype) {
127 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT:
128 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT:
129 break;
130 default:
131 aprint_error_dev(self, "invalid base address register\n");
132 return;
133 }
134
135 if (pci_mapreg_map(pa, BWI_PCI_BAR0, memtype, 0, &sc->sc_mem_bt,
136 &sc->sc_mem_bh, NULL, &psc->psc_mapsize) != 0) {
137 aprint_error_dev(self, "could not map mem space\n");
138 return;
139 }
140
141 /* map interrupt */
142 if (pci_intr_map(pa, &ih) != 0) {
143 aprint_error_dev(self, "could not map interrupt\n");
144 goto fail;
145 }
146
147 /* establish interrupt */
148 intrstr = pci_intr_string(psc->psc_pc, ih, intrbuf, sizeof(intrbuf));
149 sc->sc_ih = pci_intr_establish(psc->psc_pc, ih, IPL_NET, bwi_intr, sc);
150 if (sc->sc_ih == NULL) {
151 aprint_error_dev(self, "could not establish interrupt");
152 if (intrstr != NULL)
153 aprint_error(" at %s", intrstr);
154 aprint_error("\n");
155 goto fail;
156 }
157 aprint_normal_dev(self, "interrupting at %s\n", intrstr);
158
159 /* we need to access PCI config space from the driver */
160 sc->sc_conf_write = bwi_pci_conf_write;
161 sc->sc_conf_read = bwi_pci_conf_read;
162
163 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
164
165 sc->sc_pci_revid = PCI_REVISION(pa->pa_class);
166 sc->sc_pci_did = PCI_PRODUCT(pa->pa_id);
167 sc->sc_pci_subvid = PCI_VENDOR(reg);
168 sc->sc_pci_subdid = PCI_PRODUCT(reg);
169
170 if (!pmf_device_register(self, bwi_suspend, bwi_resume))
171 aprint_error_dev(self, "couldn't establish power handler\n");
172
173 error = bwi_attach(sc);
174 if (error)
175 goto fail;
176 return;
177
178fail:
179 if (sc->sc_ih) {
180 pci_intr_disestablish(psc->psc_pc, sc->sc_ih);
181 sc->sc_ih = NULL;
182 }
183 if (psc->psc_mapsize) {
184 bus_space_unmap(sc->sc_mem_bt, sc->sc_mem_bh, psc->psc_mapsize);
185 psc->psc_mapsize = 0;
186 }
187 return;
188}
189
190int
191bwi_pci_detach(device_t self, int flags)
192{
193 struct bwi_pci_softc *psc = device_private(self);
194 struct bwi_softc *sc = &psc->psc_bwi;
195
196 pmf_device_deregister(self);
197
198 bwi_detach(sc);
199
200 if (sc->sc_ih != NULL) {
201 pci_intr_disestablish(psc->psc_pc, sc->sc_ih);
202 sc->sc_ih = NULL;
203 }
204
205 return (0);
206}
207
208static void
209bwi_pci_conf_write(void *sc, uint32_t reg, uint32_t val)
210{
211 struct bwi_pci_softc *psc = (struct bwi_pci_softc *)sc;
212
213 pci_conf_write(psc->psc_pc, psc->psc_pcitag, reg, val);
214}
215
216static uint32_t
217bwi_pci_conf_read(void *sc, uint32_t reg)
218{
219 struct bwi_pci_softc *psc = (struct bwi_pci_softc *)sc;
220
221 return (pci_conf_read(psc->psc_pc, psc->psc_pcitag, reg));
222}
223