if_gem_pci.c revision 91398 
1/*
2 * Copyright (C) 2001 Eduardo Horvath.
3 * All rights reserved.
4 *
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 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR  ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR  BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *	from: NetBSD: if_gem_pci.c,v 1.7 2001/10/18 15:09:15 thorpej Exp
28 *
29 * $FreeBSD: head/sys/dev/gem/if_gem_pci.c 91398 2002-02-27 17:41:06Z tmm $
30 */
31
32/*
33 * PCI bindings for Sun GEM ethernet controllers.
34 */
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/bus.h>
39#include <sys/malloc.h>
40#include <sys/kernel.h>
41#include <sys/resource.h>
42#include <sys/socket.h>
43
44#include <machine/endian.h>
45
46#include <net/ethernet.h>
47#include <net/if.h>
48#include <net/if_arp.h>
49#include <net/if_dl.h>
50#include <net/if_media.h>
51
52#include <machine/bus.h>
53#include <machine/resource.h>
54#include <machine/ofw_machdep.h>
55
56#include <sys/rman.h>
57
58#include <dev/mii/mii.h>
59#include <dev/mii/miivar.h>
60
61#include <dev/gem/if_gemreg.h>
62#include <dev/gem/if_gemvar.h>
63
64#include <dev/pci/pcivar.h>
65#include <dev/pci/pcireg.h>
66
67#include "miibus_if.h"
68
69struct gem_pci_softc {
70	struct	gem_softc	gsc_gem;	/* GEM device */
71	struct	resource	*gsc_sres;
72	int			gsc_srid;
73	struct	resource	*gsc_ires;
74	int			gsc_irid;
75	void			*gsc_ih;
76};
77
78static int	gem_pci_probe __P((device_t));
79static int	gem_pci_attach __P((device_t));
80
81
82static device_method_t gem_pci_methods[] = {
83	/* Device interface */
84	DEVMETHOD(device_probe,		gem_pci_probe),
85	DEVMETHOD(device_attach,	gem_pci_attach),
86
87	/* bus interface */
88	DEVMETHOD(bus_print_child,	bus_generic_print_child),
89	DEVMETHOD(bus_driver_added,	bus_generic_driver_added),
90
91	/* MII interface */
92	DEVMETHOD(miibus_readreg,	gem_mii_readreg),
93	DEVMETHOD(miibus_writereg,	gem_mii_writereg),
94	DEVMETHOD(miibus_statchg,	gem_mii_statchg),
95
96	{ 0, 0 }
97};
98
99static driver_t gem_pci_driver = {
100	"gem",
101	gem_pci_methods,
102	sizeof(struct gem_pci_softc)
103};
104
105
106DRIVER_MODULE(if_gem, pci, gem_pci_driver, gem_devclass, 0, 0);
107
108struct gem_pci_dev {
109	u_int32_t	gpd_devid;
110	char	*gpd_desc;
111} gem_pci_devlist[] = {
112	{ 0x1101108e, "Sun ERI 10/100 Ethernet Adaptor" },
113	{ 0x2bad108e, "Sun GEM Gigabit Ethernet Adaptor" },
114	{ 0x0021106b, "Apple GMAC Ethernet Adaptor" },
115	{ 0x0024106b, "Apple GMAC2 Ethernet Adaptor" },
116	{ 0, NULL }
117};
118
119/*
120 * Attach routines need to be split out to different bus-specific files.
121 */
122static int
123gem_pci_probe(dev)
124	device_t dev;
125{
126	int i;
127	u_int32_t devid;
128
129	devid = pci_get_devid(dev);
130	for (i = 0; gem_pci_devlist[i].gpd_desc != NULL; i++) {
131		if (devid == gem_pci_devlist[i].gpd_devid) {
132			device_set_desc(dev, gem_pci_devlist[i].gpd_desc);
133			return (0);
134		}
135	}
136
137	return (ENXIO);
138}
139
140static int
141gem_pci_attach(dev)
142	device_t dev;
143{
144	struct gem_pci_softc *gsc = device_get_softc(dev);
145	struct gem_softc *sc = &gsc->gsc_gem;
146
147	sc->sc_dev = dev;
148	sc->sc_pci = 1;		/* XXX */
149
150	gsc->gsc_srid = PCI_GEM_BASEADDR;
151	gsc->gsc_sres = bus_alloc_resource(dev, SYS_RES_MEMORY, &gsc->gsc_srid,
152	    0, ~0, 1, RF_ACTIVE);
153	if (gsc->gsc_sres == NULL) {
154		device_printf(dev, "failed to allocate bus space resource\n");
155		return (ENXIO);
156	}
157
158	gsc->gsc_irid = 0;
159	gsc->gsc_ires = bus_alloc_resource(dev, SYS_RES_IRQ, &gsc->gsc_irid, 0,
160	    ~0, 1, RF_SHAREABLE | RF_ACTIVE);
161	if (gsc->gsc_ires == NULL) {
162		device_printf(dev, "failed to allocate interrupt resource\n");
163		goto fail_sres;
164	}
165
166	sc->sc_bustag = rman_get_bustag(gsc->gsc_sres);
167	sc->sc_h = rman_get_bushandle(gsc->gsc_sres);
168
169	/* All platform that this driver is used on must provide this. */
170	OF_getetheraddr(dev, sc->sc_arpcom.ac_enaddr);
171
172	/*
173	 * call the main configure
174	 */
175	if (gem_attach(sc) != 0) {
176		device_printf(dev, "could not be configured\n");
177		goto fail_ires;
178	}
179
180	if (bus_setup_intr(dev, gsc->gsc_ires, INTR_TYPE_NET, gem_intr, sc,
181	    &gsc->gsc_ih) != 0) {
182		device_printf(dev, "failed to set up interrupt\n");
183		goto fail_ires;
184	}
185	return (0);
186
187fail_ires:
188	bus_release_resource(dev, SYS_RES_IRQ, gsc->gsc_irid, gsc->gsc_ires);
189fail_sres:
190	bus_release_resource(dev, SYS_RES_MEMORY, gsc->gsc_srid, gsc->gsc_sres);
191	return (ENXIO);
192}
193