if_ral_pci.c revision 170530 
1/*	$FreeBSD: head/sys/dev/ral/if_ral_pci.c 170530 2007-06-11 03:36:55Z sam $	*/
2
3/*-
4 * Copyright (c) 2005, 2006
5 *	Damien Bergamini <damien.bergamini@free.fr>
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#include <sys/cdefs.h>
21__FBSDID("$FreeBSD: head/sys/dev/ral/if_ral_pci.c 170530 2007-06-11 03:36:55Z sam $");
22
23/*
24 * PCI/Cardbus front-end for the Ralink RT2560/RT2561/RT2561S/RT2661 driver.
25 */
26
27#include <sys/param.h>
28#include <sys/sysctl.h>
29#include <sys/sockio.h>
30#include <sys/mbuf.h>
31#include <sys/kernel.h>
32#include <sys/socket.h>
33#include <sys/systm.h>
34#include <sys/malloc.h>
35#include <sys/module.h>
36#include <sys/bus.h>
37#include <sys/endian.h>
38
39#include <machine/bus.h>
40#include <machine/resource.h>
41#include <sys/rman.h>
42
43#include <net/bpf.h>
44#include <net/if.h>
45#include <net/if_arp.h>
46#include <net/ethernet.h>
47#include <net/if_dl.h>
48#include <net/if_media.h>
49#include <net/if_types.h>
50
51#include <net80211/ieee80211_var.h>
52#include <net80211/ieee80211_radiotap.h>
53
54#include <dev/pci/pcireg.h>
55#include <dev/pci/pcivar.h>
56
57#include <dev/ral/if_ralrate.h>
58#include <dev/ral/rt2560var.h>
59#include <dev/ral/rt2661var.h>
60
61MODULE_DEPEND(ral, pci, 1, 1, 1);
62MODULE_DEPEND(ral, wlan, 1, 1, 1);
63
64struct ral_pci_ident {
65	uint16_t	vendor;
66	uint16_t	device;
67	const char	*name;
68};
69
70static const struct ral_pci_ident ral_pci_ids[] = {
71	{ 0x1814, 0x0201, "Ralink Technology RT2560" },
72	{ 0x1814, 0x0301, "Ralink Technology RT2561S" },
73	{ 0x1814, 0x0302, "Ralink Technology RT2561" },
74	{ 0x1814, 0x0401, "Ralink Technology RT2661" },
75
76	{ 0, 0, NULL }
77};
78
79static struct ral_opns {
80	int	(*attach)(device_t, int);
81	int	(*detach)(void *);
82	void	(*shutdown)(void *);
83	void	(*suspend)(void *);
84	void	(*resume)(void *);
85	void	(*intr)(void *);
86
87}  ral_rt2560_opns = {
88	rt2560_attach,
89	rt2560_detach,
90	rt2560_stop,
91	rt2560_stop,
92	rt2560_resume,
93	rt2560_intr
94
95}, ral_rt2661_opns = {
96	rt2661_attach,
97	rt2661_detach,
98	rt2661_shutdown,
99	rt2661_suspend,
100	rt2661_resume,
101	rt2661_intr
102};
103
104struct ral_pci_softc {
105	union {
106		struct rt2560_softc sc_rt2560;
107		struct rt2661_softc sc_rt2661;
108	} u;
109
110	struct ral_opns		*sc_opns;
111	int			irq_rid;
112	int			mem_rid;
113	struct resource		*irq;
114	struct resource		*mem;
115	void			*sc_ih;
116};
117
118static int ral_pci_probe(device_t);
119static int ral_pci_attach(device_t);
120static int ral_pci_detach(device_t);
121static int ral_pci_shutdown(device_t);
122static int ral_pci_suspend(device_t);
123static int ral_pci_resume(device_t);
124
125static device_method_t ral_pci_methods[] = {
126	/* Device interface */
127	DEVMETHOD(device_probe,		ral_pci_probe),
128	DEVMETHOD(device_attach,	ral_pci_attach),
129	DEVMETHOD(device_detach,	ral_pci_detach),
130	DEVMETHOD(device_shutdown,	ral_pci_shutdown),
131	DEVMETHOD(device_suspend,	ral_pci_suspend),
132	DEVMETHOD(device_resume,	ral_pci_resume),
133
134	{ 0, 0 }
135};
136
137static driver_t ral_pci_driver = {
138	"ral",
139	ral_pci_methods,
140	sizeof (struct ral_pci_softc)
141};
142
143static devclass_t ral_devclass;
144
145DRIVER_MODULE(ral, pci, ral_pci_driver, ral_devclass, 0, 0);
146DRIVER_MODULE(ral, cardbus, ral_pci_driver, ral_devclass, 0, 0);
147
148static int
149ral_pci_probe(device_t dev)
150{
151	const struct ral_pci_ident *ident;
152
153	for (ident = ral_pci_ids; ident->name != NULL; ident++) {
154		if (pci_get_vendor(dev) == ident->vendor &&
155		    pci_get_device(dev) == ident->device) {
156			device_set_desc(dev, ident->name);
157			return 0;
158		}
159	}
160	return ENXIO;
161}
162
163/* Base Address Register */
164#define RAL_PCI_BAR0	0x10
165
166static int
167ral_pci_attach(device_t dev)
168{
169	struct ral_pci_softc *psc = device_get_softc(dev);
170	struct rt2560_softc *sc = &psc->u.sc_rt2560;
171	int error;
172
173	if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
174		device_printf(dev, "chip is in D%d power mode "
175		    "-- setting to D0\n", pci_get_powerstate(dev));
176		pci_set_powerstate(dev, PCI_POWERSTATE_D0);
177	}
178
179	/* enable bus-mastering */
180	pci_enable_busmaster(dev);
181
182	psc->sc_opns = (pci_get_device(dev) == 0x0201) ? &ral_rt2560_opns :
183	    &ral_rt2661_opns;
184
185	psc->mem_rid = RAL_PCI_BAR0;
186	psc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &psc->mem_rid,
187	    RF_ACTIVE);
188	if (psc->mem == NULL) {
189		device_printf(dev, "could not allocate memory resource\n");
190		return ENXIO;
191	}
192
193	sc->sc_st = rman_get_bustag(psc->mem);
194	sc->sc_sh = rman_get_bushandle(psc->mem);
195	sc->sc_invalid = 1;
196
197	psc->irq_rid = 0;
198	psc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &psc->irq_rid,
199	    RF_ACTIVE | RF_SHAREABLE);
200	if (psc->irq == NULL) {
201		device_printf(dev, "could not allocate interrupt resource\n");
202		return ENXIO;
203	}
204
205	error = (*psc->sc_opns->attach)(dev, pci_get_device(dev));
206	if (error != 0)
207		return error;
208
209	/*
210	 * Hook our interrupt after all initialization is complete.
211	 */
212	error = bus_setup_intr(dev, psc->irq, INTR_TYPE_NET | INTR_MPSAFE,
213	    NULL, psc->sc_opns->intr, psc, &psc->sc_ih);
214	if (error != 0) {
215		device_printf(dev, "could not set up interrupt\n");
216		return error;
217	}
218	sc->sc_invalid = 0;
219
220	return 0;
221}
222
223static int
224ral_pci_detach(device_t dev)
225{
226	struct ral_pci_softc *psc = device_get_softc(dev);
227	struct rt2560_softc *sc = &psc->u.sc_rt2560;
228
229	/* check if device was removed */
230	sc->sc_invalid = !bus_child_present(dev);
231
232	(*psc->sc_opns->detach)(psc);
233
234	bus_generic_detach(dev);
235	bus_teardown_intr(dev, psc->irq, psc->sc_ih);
236	bus_release_resource(dev, SYS_RES_IRQ, psc->irq_rid, psc->irq);
237
238	bus_release_resource(dev, SYS_RES_MEMORY, psc->mem_rid, psc->mem);
239
240	return 0;
241}
242
243static int
244ral_pci_shutdown(device_t dev)
245{
246	struct ral_pci_softc *psc = device_get_softc(dev);
247
248	(*psc->sc_opns->shutdown)(psc);
249
250	return 0;
251}
252
253static int
254ral_pci_suspend(device_t dev)
255{
256	struct ral_pci_softc *psc = device_get_softc(dev);
257
258	(*psc->sc_opns->suspend)(psc);
259
260	return 0;
261}
262
263static int
264ral_pci_resume(device_t dev)
265{
266	struct ral_pci_softc *psc = device_get_softc(dev);
267
268	(*psc->sc_opns->resume)(psc);
269
270	return 0;
271}
272