if_mwl_pci.c revision 331722 
1/*-
2 * Copyright (c) 2007-2009 Sam Leffler, Errno Consulting
3 * Copyright (c) 2007-2009 Marvell Semiconductor, Inc.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer,
11 *    without modification.
12 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
13 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
14 *    redistribution must be conditioned upon including a substantially
15 *    similar Disclaimer requirement for further binary redistribution.
16 *
17 * NO WARRANTY
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
21 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
23 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
26 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGES.
29 */
30
31#include <sys/cdefs.h>
32#ifdef __FreeBSD__
33__FBSDID("$FreeBSD: stable/11/sys/dev/mwl/if_mwl_pci.c 331722 2018-03-29 02:50:57Z eadler $");
34#endif
35
36/*
37 * PCI front-end for the Marvell Wireless LAN controller driver.
38 */
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/module.h>
43#include <sys/kernel.h>
44#include <sys/lock.h>
45#include <sys/malloc.h>
46#include <sys/mbuf.h>
47#include <sys/mutex.h>
48#include <sys/errno.h>
49
50#include <machine/bus.h>
51#include <machine/resource.h>
52#include <sys/bus.h>
53#include <sys/rman.h>
54
55#include <sys/socket.h>
56
57#include <net/ethernet.h>
58#include <net/if.h>
59#include <net/if_media.h>
60#include <net/if_arp.h>
61#include <net/route.h>
62
63#include <net80211/ieee80211_var.h>
64
65#include <dev/mwl/if_mwlvar.h>
66
67#include <dev/pci/pcivar.h>
68#include <dev/pci/pcireg.h>
69
70/*
71 * PCI glue.
72 */
73
74struct mwl_pci_softc {
75	struct mwl_softc	sc_sc;
76	struct resource		*sc_sr0;	/* BAR0 memory resource */
77	struct resource		*sc_sr1;	/* BAR1 memory resource */
78	struct resource		*sc_irq;	/* irq resource */
79	void			*sc_ih;		/* interrupt handler */
80};
81
82#define	BS_BAR0	0x10
83#define	BS_BAR1	0x14
84
85struct mwl_pci_ident {
86	uint16_t	vendor;
87	uint16_t	device;
88	const char	*name;
89};
90
91static const struct mwl_pci_ident mwl_pci_ids[] = {
92	{ 0x11ab, 0x2a02, "Marvell 88W8363" },
93	{ 0x11ab, 0x2a03, "Marvell 88W8363" },
94	{ 0x11ab, 0x2a0a, "Marvell 88W8363" },
95	{ 0x11ab, 0x2a0b, "Marvell 88W8363" },
96	{ 0x11ab, 0x2a0c, "Marvell 88W8363" },
97	{ 0x11ab, 0x2a21, "Marvell 88W8363" },
98	{ 0x11ab, 0x2a24, "Marvell 88W8363" },
99
100	{ 0, 0, NULL }
101};
102
103const static struct mwl_pci_ident *
104mwl_pci_lookup(int vendor, int device)
105{
106	const struct mwl_pci_ident *ident;
107
108	for (ident = mwl_pci_ids; ident->name != NULL; ident++)
109		if (vendor == ident->vendor && device == ident->device)
110			return ident;
111	return NULL;
112}
113
114static int
115mwl_pci_probe(device_t dev)
116{
117	const struct mwl_pci_ident *ident;
118
119	ident = mwl_pci_lookup(pci_get_vendor(dev), pci_get_device(dev));
120	if (ident != NULL) {
121		device_set_desc(dev, ident->name);
122		return BUS_PROBE_DEFAULT;
123	}
124	return ENXIO;
125}
126
127static int
128mwl_pci_attach(device_t dev)
129{
130	struct mwl_pci_softc *psc = device_get_softc(dev);
131	struct mwl_softc *sc = &psc->sc_sc;
132	int rid, error = ENXIO;
133
134	sc->sc_dev = dev;
135
136	pci_enable_busmaster(dev);
137
138	/*
139	 * Setup memory-mapping of PCI registers.
140	 */
141	rid = BS_BAR0;
142	psc->sc_sr0 = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
143					    RF_ACTIVE);
144	if (psc->sc_sr0 == NULL) {
145		device_printf(dev, "cannot map BAR0 register space\n");
146		goto bad;
147	}
148	rid = BS_BAR1;
149	psc->sc_sr1 = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
150					    RF_ACTIVE);
151	if (psc->sc_sr1 == NULL) {
152		device_printf(dev, "cannot map BAR1 register space\n");
153		goto bad1;
154	}
155	sc->sc_invalid = 1;
156
157	/*
158	 * Arrange interrupt line.
159	 */
160	rid = 0;
161	psc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
162					     RF_SHAREABLE|RF_ACTIVE);
163	if (psc->sc_irq == NULL) {
164		device_printf(dev, "could not map interrupt\n");
165		goto bad2;
166	}
167	if (bus_setup_intr(dev, psc->sc_irq,
168			   INTR_TYPE_NET | INTR_MPSAFE,
169			   NULL, mwl_intr, sc, &psc->sc_ih)) {
170		device_printf(dev, "could not establish interrupt\n");
171		goto bad3;
172	}
173
174	/*
175	 * Setup DMA descriptor area.
176	 */
177	if (bus_dma_tag_create(bus_get_dma_tag(dev),	/* parent */
178			       1, 0,			/* alignment, bounds */
179			       BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
180			       BUS_SPACE_MAXADDR,	/* highaddr */
181			       NULL, NULL,		/* filter, filterarg */
182			       BUS_SPACE_MAXSIZE,	/* maxsize */
183			       MWL_TXDESC,		/* nsegments */
184			       BUS_SPACE_MAXSIZE,	/* maxsegsize */
185			       0,			/* flags */
186			       NULL,			/* lockfunc */
187			       NULL,			/* lockarg */
188			       &sc->sc_dmat)) {
189		device_printf(dev, "cannot allocate DMA tag\n");
190		goto bad4;
191	}
192
193	/*
194	 * Finish off the attach.
195	 */
196	MWL_LOCK_INIT(sc);
197	sc->sc_io0t = rman_get_bustag(psc->sc_sr0);
198	sc->sc_io0h = rman_get_bushandle(psc->sc_sr0);
199	sc->sc_io1t = rman_get_bustag(psc->sc_sr1);
200	sc->sc_io1h = rman_get_bushandle(psc->sc_sr1);
201	if (mwl_attach(pci_get_device(dev), sc) == 0)
202		return (0);
203
204	MWL_LOCK_DESTROY(sc);
205	bus_dma_tag_destroy(sc->sc_dmat);
206bad4:
207	bus_teardown_intr(dev, psc->sc_irq, psc->sc_ih);
208bad3:
209	bus_release_resource(dev, SYS_RES_IRQ, 0, psc->sc_irq);
210bad2:
211	bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR1, psc->sc_sr1);
212bad1:
213	bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR0, psc->sc_sr0);
214bad:
215	return (error);
216}
217
218static int
219mwl_pci_detach(device_t dev)
220{
221	struct mwl_pci_softc *psc = device_get_softc(dev);
222	struct mwl_softc *sc = &psc->sc_sc;
223
224	/* check if device was removed */
225	sc->sc_invalid = !bus_child_present(dev);
226
227	mwl_detach(sc);
228
229	bus_generic_detach(dev);
230	bus_teardown_intr(dev, psc->sc_irq, psc->sc_ih);
231	bus_release_resource(dev, SYS_RES_IRQ, 0, psc->sc_irq);
232
233	bus_dma_tag_destroy(sc->sc_dmat);
234	bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR1, psc->sc_sr1);
235	bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR0, psc->sc_sr0);
236
237	MWL_LOCK_DESTROY(sc);
238
239	return (0);
240}
241
242static int
243mwl_pci_shutdown(device_t dev)
244{
245	struct mwl_pci_softc *psc = device_get_softc(dev);
246
247	mwl_shutdown(&psc->sc_sc);
248	return (0);
249}
250
251static int
252mwl_pci_suspend(device_t dev)
253{
254	struct mwl_pci_softc *psc = device_get_softc(dev);
255
256	mwl_suspend(&psc->sc_sc);
257
258	return (0);
259}
260
261static int
262mwl_pci_resume(device_t dev)
263{
264	struct mwl_pci_softc *psc = device_get_softc(dev);
265
266	pci_enable_busmaster(dev);
267
268	mwl_resume(&psc->sc_sc);
269
270	return (0);
271}
272
273static device_method_t mwl_pci_methods[] = {
274	/* Device interface */
275	DEVMETHOD(device_probe,		mwl_pci_probe),
276	DEVMETHOD(device_attach,	mwl_pci_attach),
277	DEVMETHOD(device_detach,	mwl_pci_detach),
278	DEVMETHOD(device_shutdown,	mwl_pci_shutdown),
279	DEVMETHOD(device_suspend,	mwl_pci_suspend),
280	DEVMETHOD(device_resume,	mwl_pci_resume),
281
282	{ 0,0 }
283};
284static driver_t mwl_pci_driver = {
285	"mwl",
286	mwl_pci_methods,
287	sizeof (struct mwl_pci_softc)
288};
289static	devclass_t mwl_devclass;
290DRIVER_MODULE(mwl, pci, mwl_pci_driver, mwl_devclass, 0, 0);
291MODULE_VERSION(mwl, 1);
292MODULE_DEPEND(mwl, wlan, 1, 1, 1);		/* 802.11 media layer */
293MODULE_DEPEND(mwl, firmware, 1, 1, 1);
294