if_ral_pci.c revision 279157 
1/*-
2 * Copyright (c) 2005, 2006
3 *	Damien Bergamini <damien.bergamini@free.fr>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <sys/cdefs.h>
19__FBSDID("$FreeBSD: stable/10/sys/dev/ral/if_ral_pci.c 279157 2015-02-22 15:27:02Z kevlo $");
20
21/*
22 * PCI/Cardbus front-end for the Ralink RT2560/RT2561/RT2561S/RT2661 driver.
23 */
24
25#include <sys/param.h>
26#include <sys/systm.h>
27#include <sys/bus.h>
28#include <sys/kernel.h>
29#include <sys/lock.h>
30#include <sys/malloc.h>
31#include <sys/module.h>
32#include <sys/mutex.h>
33#include <sys/rman.h>
34#include <sys/socket.h>
35
36#include <machine/bus.h>
37#include <machine/resource.h>
38
39#include <net/ethernet.h>
40#include <net/if.h>
41#include <net/if_media.h>
42#include <net/route.h>
43
44#include <net80211/ieee80211_var.h>
45#include <net80211/ieee80211_radiotap.h>
46
47#include <dev/pci/pcireg.h>
48#include <dev/pci/pcivar.h>
49
50#include <dev/ral/rt2560var.h>
51#include <dev/ral/rt2661var.h>
52#include <dev/ral/rt2860var.h>
53
54MODULE_DEPEND(ral, pci, 1, 1, 1);
55MODULE_DEPEND(ral, firmware, 1, 1, 1);
56MODULE_DEPEND(ral, wlan, 1, 1, 1);
57MODULE_DEPEND(ral, wlan_amrr, 1, 1, 1);
58
59static int ral_msi_disable;
60TUNABLE_INT("hw.ral.msi_disable", &ral_msi_disable);
61
62struct ral_pci_ident {
63	uint16_t	vendor;
64	uint16_t	device;
65	const char	*name;
66};
67
68static const struct ral_pci_ident ral_pci_ids[] = {
69	{ 0x1432, 0x7708, "Edimax RT2860" },
70	{ 0x1432, 0x7711, "Edimax RT3591" },
71	{ 0x1432, 0x7722, "Edimax RT3591" },
72	{ 0x1432, 0x7727, "Edimax RT2860" },
73	{ 0x1432, 0x7728, "Edimax RT2860" },
74	{ 0x1432, 0x7738, "Edimax RT2860" },
75	{ 0x1432, 0x7748, "Edimax RT2860" },
76	{ 0x1432, 0x7758, "Edimax RT2860" },
77	{ 0x1432, 0x7768, "Edimax RT2860" },
78	{ 0x1462, 0x891a, "MSI RT3090" },
79	{ 0x1814, 0x0201, "Ralink Technology RT2560" },
80	{ 0x1814, 0x0301, "Ralink Technology RT2561S" },
81	{ 0x1814, 0x0302, "Ralink Technology RT2561" },
82	{ 0x1814, 0x0401, "Ralink Technology RT2661" },
83	{ 0x1814, 0x0601, "Ralink Technology RT2860" },
84	{ 0x1814, 0x0681, "Ralink Technology RT2890" },
85	{ 0x1814, 0x0701, "Ralink Technology RT2760" },
86	{ 0x1814, 0x0781, "Ralink Technology RT2790" },
87	{ 0x1814, 0x3060, "Ralink Technology RT3060" },
88	{ 0x1814, 0x3062, "Ralink Technology RT3062" },
89	{ 0x1814, 0x3090, "Ralink Technology RT3090" },
90	{ 0x1814, 0x3091, "Ralink Technology RT3091" },
91	{ 0x1814, 0x3092, "Ralink Technology RT3092" },
92	{ 0x1814, 0x3390, "Ralink Technology RT3390" },
93	{ 0x1814, 0x3562, "Ralink Technology RT3562" },
94	{ 0x1814, 0x3592, "Ralink Technology RT3592" },
95	{ 0x1814, 0x3593, "Ralink Technology RT3593" },
96	{ 0x1814, 0x5360, "Ralink Technology RT5390" },
97	{ 0x1814, 0x5362, "Ralink Technology RT5392" },
98	{ 0x1814, 0x5390, "Ralink Technology RT5390" },
99	{ 0x1814, 0x5392, "Ralink Technology RT5392" },
100	{ 0x1814, 0x539a, "Ralink Technology RT5390" },
101	{ 0x1814, 0x539f, "Ralink Technology RT5390" },
102	{ 0x1a3b, 0x1059, "AWT RT2890" },
103	{ 0, 0, NULL }
104};
105
106static const struct ral_opns {
107	int	(*attach)(device_t, int);
108	int	(*detach)(void *);
109	void	(*shutdown)(void *);
110	void	(*suspend)(void *);
111	void	(*resume)(void *);
112	void	(*intr)(void *);
113
114}  ral_rt2560_opns = {
115	rt2560_attach,
116	rt2560_detach,
117	rt2560_stop,
118	rt2560_stop,
119	rt2560_resume,
120	rt2560_intr
121
122}, ral_rt2661_opns = {
123	rt2661_attach,
124	rt2661_detach,
125	rt2661_shutdown,
126	rt2661_suspend,
127	rt2661_resume,
128	rt2661_intr
129}, ral_rt2860_opns = {
130	rt2860_attach,
131	rt2860_detach,
132	rt2860_shutdown,
133	rt2860_suspend,
134	rt2860_resume,
135	rt2860_intr
136};
137
138struct ral_pci_softc {
139	union {
140		struct rt2560_softc sc_rt2560;
141		struct rt2661_softc sc_rt2661;
142		struct rt2860_softc sc_rt2860;
143	} u;
144
145	const struct ral_opns	*sc_opns;
146	struct resource		*irq;
147	struct resource		*mem;
148	void			*sc_ih;
149};
150
151static int ral_pci_probe(device_t);
152static int ral_pci_attach(device_t);
153static int ral_pci_detach(device_t);
154static int ral_pci_shutdown(device_t);
155static int ral_pci_suspend(device_t);
156static int ral_pci_resume(device_t);
157
158static device_method_t ral_pci_methods[] = {
159	/* Device interface */
160	DEVMETHOD(device_probe,		ral_pci_probe),
161	DEVMETHOD(device_attach,	ral_pci_attach),
162	DEVMETHOD(device_detach,	ral_pci_detach),
163	DEVMETHOD(device_shutdown,	ral_pci_shutdown),
164	DEVMETHOD(device_suspend,	ral_pci_suspend),
165	DEVMETHOD(device_resume,	ral_pci_resume),
166
167	DEVMETHOD_END
168};
169
170static driver_t ral_pci_driver = {
171	"ral",
172	ral_pci_methods,
173	sizeof (struct ral_pci_softc)
174};
175
176static devclass_t ral_devclass;
177
178DRIVER_MODULE(ral, pci, ral_pci_driver, ral_devclass, NULL, NULL);
179
180static int
181ral_pci_probe(device_t dev)
182{
183	const struct ral_pci_ident *ident;
184
185	for (ident = ral_pci_ids; ident->name != NULL; ident++) {
186		if (pci_get_vendor(dev) == ident->vendor &&
187		    pci_get_device(dev) == ident->device) {
188			device_set_desc(dev, ident->name);
189			return (BUS_PROBE_DEFAULT);
190		}
191	}
192	return ENXIO;
193}
194
195static int
196ral_pci_attach(device_t dev)
197{
198	struct ral_pci_softc *psc = device_get_softc(dev);
199	struct rt2560_softc *sc = &psc->u.sc_rt2560;
200	int count, error, rid;
201
202	pci_enable_busmaster(dev);
203
204	switch (pci_get_device(dev)) {
205	case 0x0201:
206		psc->sc_opns = &ral_rt2560_opns;
207		break;
208	case 0x0301:
209	case 0x0302:
210	case 0x0401:
211		psc->sc_opns = &ral_rt2661_opns;
212		break;
213	default:
214		psc->sc_opns = &ral_rt2860_opns;
215		break;
216	}
217
218	rid = PCIR_BAR(0);
219	psc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
220	    RF_ACTIVE);
221	if (psc->mem == NULL) {
222		device_printf(dev, "could not allocate memory resource\n");
223		return ENXIO;
224	}
225
226	sc->sc_st = rman_get_bustag(psc->mem);
227	sc->sc_sh = rman_get_bushandle(psc->mem);
228	sc->sc_invalid = 1;
229
230	rid = 0;
231	if (ral_msi_disable == 0) {
232		count = 1;
233		if (pci_alloc_msi(dev, &count) == 0)
234			rid = 1;
235	}
236	psc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
237	    (rid != 0 ? 0 : RF_SHAREABLE));
238	if (psc->irq == NULL) {
239		device_printf(dev, "could not allocate interrupt resource\n");
240		pci_release_msi(dev);
241		bus_release_resource(dev, SYS_RES_MEMORY,
242		    rman_get_rid(psc->mem), psc->mem);
243		return ENXIO;
244	}
245
246	error = (*psc->sc_opns->attach)(dev, pci_get_device(dev));
247	if (error != 0) {
248		(void)ral_pci_detach(dev);
249		return error;
250	}
251
252	/*
253	 * Hook our interrupt after all initialization is complete.
254	 */
255	error = bus_setup_intr(dev, psc->irq, INTR_TYPE_NET | INTR_MPSAFE,
256	    NULL, psc->sc_opns->intr, psc, &psc->sc_ih);
257	if (error != 0) {
258		device_printf(dev, "could not set up interrupt\n");
259		(void)ral_pci_detach(dev);
260		return error;
261	}
262	sc->sc_invalid = 0;
263
264	return 0;
265}
266
267static int
268ral_pci_detach(device_t dev)
269{
270	struct ral_pci_softc *psc = device_get_softc(dev);
271	struct rt2560_softc *sc = &psc->u.sc_rt2560;
272
273	/* check if device was removed */
274	sc->sc_invalid = !bus_child_present(dev);
275
276	if (psc->sc_ih != NULL)
277		bus_teardown_intr(dev, psc->irq, psc->sc_ih);
278	(*psc->sc_opns->detach)(psc);
279
280	bus_generic_detach(dev);
281	bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(psc->irq),
282	    psc->irq);
283	pci_release_msi(dev);
284
285	bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(psc->mem),
286	    psc->mem);
287
288	return 0;
289}
290
291static int
292ral_pci_shutdown(device_t dev)
293{
294	struct ral_pci_softc *psc = device_get_softc(dev);
295
296	(*psc->sc_opns->shutdown)(psc);
297
298	return 0;
299}
300
301static int
302ral_pci_suspend(device_t dev)
303{
304	struct ral_pci_softc *psc = device_get_softc(dev);
305
306	(*psc->sc_opns->suspend)(psc);
307
308	return 0;
309}
310
311static int
312ral_pci_resume(device_t dev)
313{
314	struct ral_pci_softc *psc = device_get_softc(dev);
315
316	(*psc->sc_opns->resume)(psc);
317
318	return 0;
319}
320