xref: /freebsd/sys/dev/bwn/if_bwn_pci.c (revision 60eddb209b5ad13a549ca74a41b7cb38a31da5ef)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2015-2016 Landon Fuller <landonf@FreeBSD.org>
5  * 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  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 
32 #include "opt_bwn.h"
33 #include "opt_wlan.h"
34 
35 #include <sys/param.h>
36 #include <sys/kernel.h>
37 #include <sys/bus.h>
38 #include <sys/module.h>
39 
40 #include <dev/pci/pcireg.h>
41 #include <dev/pci/pcivar.h>
42 
43 #include <dev/bhnd/bhndb/bhndb_pcivar.h>
44 #include <dev/bhnd/bhndb/bhndb_hwdata.h>
45 #include <dev/bhnd/bhndb/bhndb_pci_hwdata.h>
46 
47 #include <dev/bhnd/bhnd_ids.h>
48 
49 #include "bhndb_bus_if.h"
50 
51 #include "if_bwn_pcivar.h"
52 
53 /* If non-zero, enable attachment of BWN_QUIRK_UNTESTED devices */
54 static int attach_untested = 0;
55 TUNABLE_INT("hw.bwn_pci.attach_untested", &attach_untested);
56 
57 /* If non-zero, probe at a higher priority than the stable if_bwn driver. */
58 static int prefer_new_driver = 0;
59 TUNABLE_INT("hw.bwn_pci.preferred", &prefer_new_driver);
60 
61 /* SIBA Devices */
62 static const struct bwn_pci_device siba_devices[] = {
63 	BWN_BCM_DEV(BCM4306_D11A,	"BCM4306 802.11a",
64 	    BWN_QUIRK_WLAN_DUALCORE),
65 	BWN_BCM_DEV(BCM4307,		"BCM4307 802.11b",		0),
66 
67 	BWN_BCM_DEV(BCM4311_D11G,	"BCM4311 802.11b/g",		0),
68 	BWN_BCM_DEV(BCM4311_D11DUAL,	"BCM4311 802.11a/b/g",		0),
69 	BWN_BCM_DEV(BCM4311_D11A,	"BCM4311 802.11a",
70 	    BWN_QUIRK_UNTESTED|BWN_QUIRK_WLAN_DUALCORE),
71 
72 	BWN_BCM_DEV(BCM4318_D11G,	"BCM4318 802.11b/g",		0),
73 	BWN_BCM_DEV(BCM4318_D11DUAL,	"BCM4318 802.11a/b/g",		0),
74 	BWN_BCM_DEV(BCM4318_D11A,	"BCM4318 802.11a",
75 	    BWN_QUIRK_UNTESTED|BWN_QUIRK_WLAN_DUALCORE),
76 
77 	BWN_BCM_DEV(BCM4321_D11N,	"BCM4321 802.11n Dual-Band",
78 	    BWN_QUIRK_USBH_UNPOPULATED),
79 	BWN_BCM_DEV(BCM4321_D11N2G,	"BCM4321 802.11n 2GHz",
80 	    BWN_QUIRK_USBH_UNPOPULATED),
81 	BWN_BCM_DEV(BCM4321_D11N5G,	"BCM4321 802.11n 5GHz",
82 	    BWN_QUIRK_UNTESTED|BWN_QUIRK_USBH_UNPOPULATED),
83 
84 	BWN_BCM_DEV(BCM4322_D11N,	"BCM4322 802.11n Dual-Band",	0),
85 	BWN_BCM_DEV(BCM4322_D11N2G,	"BCM4322 802.11n 2GHz",
86 	    BWN_QUIRK_UNTESTED),
87 	BWN_BCM_DEV(BCM4322_D11N5G,	"BCM4322 802.11n 5GHz",
88 	    BWN_QUIRK_UNTESTED),
89 
90 	BWN_BCM_DEV(BCM4328_D11G,	"BCM4328/4312 802.11g",		0),
91 
92 	{ 0, 0, NULL, 0 }
93 };
94 
95 /** BCMA Devices */
96 static const struct bwn_pci_device bcma_devices[] = {
97 	BWN_BCM_DEV(BCM4331_D11N,	"BCM4331 802.11n Dual-Band",	0),
98 	BWN_BCM_DEV(BCM4331_D11N2G,	"BCM4331 802.11n 2GHz",		0),
99 	BWN_BCM_DEV(BCM4331_D11N5G,	"BCM4331 802.11n 5GHz",		0),
100 	BWN_BCM_DEV(BCM43224_D11N,	"BCM43224 802.11n Dual-Band",	0),
101 	BWN_BCM_DEV(BCM43224_D11N_ID_VEN1, "BCM43224 802.11n Dual-Band",0),
102 	BWN_BCM_DEV(BCM43225_D11N2G,	"BCM43225 802.11n 2GHz",	0),
103 
104 	{ 0, 0, NULL, 0}
105 };
106 
107 /** Device configuration table */
108 static const struct bwn_pci_devcfg bwn_pci_devcfgs[] = {
109 	/* SIBA devices */
110 	{
111 		.bridge_hwcfg	= &bhndb_pci_siba_generic_hwcfg,
112 		.bridge_hwtable	= bhndb_pci_generic_hw_table,
113 		.bridge_hwprio	= bhndb_siba_priority_table,
114 		.devices	= siba_devices
115 	},
116 	/* BCMA devices */
117 	{
118 		.bridge_hwcfg	= &bhndb_pci_bcma_generic_hwcfg,
119 		.bridge_hwtable	= bhndb_pci_generic_hw_table,
120 		.bridge_hwprio	= bhndb_bcma_priority_table,
121 		.devices	= bcma_devices
122 	},
123 	{ NULL, NULL, NULL }
124 };
125 
126 /** Search the device configuration table for an entry matching @p dev. */
127 static int
128 bwn_pci_find_devcfg(device_t dev, const struct bwn_pci_devcfg **cfg,
129     const struct bwn_pci_device **device)
130 {
131 	const struct bwn_pci_devcfg	*dvc;
132 	const struct bwn_pci_device	*dv;
133 
134 	for (dvc = bwn_pci_devcfgs; dvc->devices != NULL; dvc++) {
135 		for (dv = dvc->devices; dv->device != 0; dv++) {
136 			if (pci_get_vendor(dev) == dv->vendor &&
137 			    pci_get_device(dev) == dv->device)
138 			{
139 				if (cfg != NULL)
140 					*cfg = dvc;
141 
142 				if (device != NULL)
143 					*device = dv;
144 
145 				return (0);
146 			}
147 		}
148 	}
149 
150 	return (ENOENT);
151 }
152 
153 static int
154 bwn_pci_probe(device_t dev)
155 {
156 	const struct bwn_pci_device	*ident;
157 
158 	if (bwn_pci_find_devcfg(dev, NULL, &ident))
159 		return (ENXIO);
160 
161 	/* Skip untested devices */
162 	if (ident->quirks & BWN_QUIRK_UNTESTED && !attach_untested)
163 		return (ENXIO);
164 
165 	device_set_desc(dev, ident->desc);
166 
167 	/* Until this driver is complete, require explicit opt-in before
168 	 * superceding if_bwn/siba_bwn. */
169 	if (prefer_new_driver)
170 		return (BUS_PROBE_DEFAULT+1);
171 	else
172 		return (BUS_PROBE_LOW_PRIORITY);
173 
174 	// return (BUS_PROBE_DEFAULT);
175 }
176 
177 static int
178 bwn_pci_attach(device_t dev)
179 {
180 	struct bwn_pci_softc		*sc;
181 	const struct bwn_pci_device	*ident;
182 	int				 error;
183 
184 	sc = device_get_softc(dev);
185 	sc->dev = dev;
186 
187 	/* Find our hardware config */
188 	if (bwn_pci_find_devcfg(dev, &sc->devcfg, &ident))
189 		return (ENXIO);
190 
191 	/* Save quirk flags */
192 	sc->quirks = ident->quirks;
193 
194 	/* Attach bridge device */
195 	if ((error = bhndb_attach_bridge(dev, &sc->bhndb_dev, -1)))
196 		return (ENXIO);
197 
198 	/* Success */
199 	return (0);
200 }
201 
202 static int
203 bwn_pci_detach(device_t dev)
204 {
205 	int error;
206 
207 	if ((error = bus_generic_detach(dev)))
208 		return (error);
209 
210 	return (device_delete_children(dev));
211 }
212 
213 static void
214 bwn_pci_probe_nomatch(device_t dev, device_t child)
215 {
216 	const char *name;
217 
218 	name = device_get_name(child);
219 	if (name == NULL)
220 		name = "unknown device";
221 
222 	device_printf(dev, "<%s> (no driver attached)\n", name);
223 }
224 
225 static const struct bhndb_hwcfg *
226 bwn_pci_get_generic_hwcfg(device_t dev, device_t child)
227 {
228 	struct bwn_pci_softc *sc = device_get_softc(dev);
229 	return (sc->devcfg->bridge_hwcfg);
230 }
231 
232 static const struct bhndb_hw *
233 bwn_pci_get_bhndb_hwtable(device_t dev, device_t child)
234 {
235 	struct bwn_pci_softc *sc = device_get_softc(dev);
236 	return (sc->devcfg->bridge_hwtable);
237 }
238 
239 static const struct bhndb_hw_priority *
240 bwn_pci_get_bhndb_hwprio(device_t dev, device_t child)
241 {
242 	struct bwn_pci_softc *sc = device_get_softc(dev);
243 	return (sc->devcfg->bridge_hwprio);
244 }
245 
246 static bool
247 bwn_pci_is_core_disabled(device_t dev, device_t child,
248     struct bhnd_core_info *core)
249 {
250 	struct bwn_pci_softc	*sc;
251 
252 	sc = device_get_softc(dev);
253 
254 	switch (bhnd_core_class(core)) {
255 	case BHND_DEVCLASS_WLAN:
256 		if (core->unit > 0 && !(sc->quirks & BWN_QUIRK_WLAN_DUALCORE))
257 			return (true);
258 
259 		return (false);
260 
261 	case BHND_DEVCLASS_ENET:
262 	case BHND_DEVCLASS_ENET_MAC:
263 	case BHND_DEVCLASS_ENET_PHY:
264 		return ((sc->quirks & BWN_QUIRK_ENET_HW_UNPOPULATED) != 0);
265 
266 	case BHND_DEVCLASS_USB_HOST:
267 		return ((sc->quirks & BWN_QUIRK_USBH_UNPOPULATED) != 0);
268 
269 	default:
270 		return (false);
271 	}
272 }
273 
274 static device_method_t bwn_pci_methods[] = {
275 	/* Device interface */
276 	DEVMETHOD(device_probe,			bwn_pci_probe),
277 	DEVMETHOD(device_attach,		bwn_pci_attach),
278 	DEVMETHOD(device_detach,		bwn_pci_detach),
279 	DEVMETHOD(device_shutdown,		bus_generic_shutdown),
280 	DEVMETHOD(device_suspend,		bus_generic_suspend),
281 	DEVMETHOD(device_resume,		bus_generic_resume),
282 
283 	/* Bus interface */
284 	DEVMETHOD(bus_probe_nomatch,		bwn_pci_probe_nomatch),
285 
286 	/* BHNDB_BUS Interface */
287 	DEVMETHOD(bhndb_bus_get_generic_hwcfg,	bwn_pci_get_generic_hwcfg),
288 	DEVMETHOD(bhndb_bus_get_hardware_table,	bwn_pci_get_bhndb_hwtable),
289 	DEVMETHOD(bhndb_bus_get_hardware_prio,	bwn_pci_get_bhndb_hwprio),
290 	DEVMETHOD(bhndb_bus_is_core_disabled,	bwn_pci_is_core_disabled),
291 
292 	DEVMETHOD_END
293 };
294 
295 static devclass_t bwn_pci_devclass;
296 
297 DEFINE_CLASS_0(bwn_pci, bwn_pci_driver, bwn_pci_methods,
298     sizeof(struct bwn_pci_softc));
299 DRIVER_MODULE_ORDERED(bwn_pci, pci, bwn_pci_driver, bwn_pci_devclass, NULL,
300     NULL, SI_ORDER_ANY);
301 DRIVER_MODULE(bhndb, bwn_pci, bhndb_pci_driver, bhndb_devclass, NULL, NULL);
302 
303 MODULE_DEPEND(bwn_pci, bwn, 1, 1, 1);
304 MODULE_DEPEND(bwn_pci, bhnd, 1, 1, 1);
305 MODULE_DEPEND(bwn_pci, bhndb, 1, 1, 1);
306 MODULE_DEPEND(bwn_pci, bhndb_pci, 1, 1, 1);
307 MODULE_DEPEND(bwn_pci, bcma_bhndb, 1, 1, 1);
308 MODULE_DEPEND(bwn_pci, siba_bhndb, 1, 1, 1);
309