1 /*
2 * Copyright (c) 2000 Matthew R. Green
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * 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 * from: NetBSD: if_hme_pci.c,v 1.4 2001/08/27 22:18:49 augustss Exp
29 *
30 * $FreeBSD: releng/5.0/sys/dev/hme/if_hme_pci.c 93043 2002-03-23 19:37:11Z tmm $
31 */
32
33 /*
34 * PCI front-end device driver for the HME ethernet device.
35 */
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/bus.h>
40 #include <sys/kernel.h>
41 #include <sys/resource.h>
42 #include <sys/socket.h>
43
44 #include <machine/bus.h>
45 #include <machine/ofw_machdep.h>
46 #include <machine/resource.h>
47
48 #include <sys/rman.h>
49
50 #include <net/ethernet.h>
51 #include <net/if.h>
52 #include <net/if_arp.h>
53 #include <net/if_dl.h>
54 #include <net/if_media.h>
55
56 #include <mii/mii.h>
57 #include <mii/miivar.h>
58
59 #include <pci/pcivar.h>
60 #include <pci/pcireg.h>
61
62 #include <hme/if_hmereg.h>
63 #include <hme/if_hmevar.h>
64
65 #include "miibus_if.h"
66
67 struct hme_pci_softc {
68 struct hme_softc hsc_hme; /* HME device */
69 struct resource *hsc_sres;
70 int hsc_srid;
71 struct resource *hsc_ires;
72 int hsc_irid;
73 bus_space_tag_t hsc_memt;
74 bus_space_handle_t hsc_memh;
75 void *hsc_ih;
76 };
77
78 static int hme_pci_probe(device_t);
79 static int hme_pci_attach(device_t);
80
81 static device_method_t hme_pci_methods[] = {
82 /* Device interface */
83 DEVMETHOD(device_probe, hme_pci_probe),
84 DEVMETHOD(device_attach, hme_pci_attach),
85
86 /* bus interface */
87 DEVMETHOD(bus_print_child, bus_generic_print_child),
88 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
89
90 /* MII interface */
91 DEVMETHOD(miibus_readreg, hme_mii_readreg),
92 DEVMETHOD(miibus_writereg, hme_mii_writereg),
93 DEVMETHOD(miibus_statchg, hme_mii_statchg),
94
95 { 0, 0 }
96 };
97
98 static driver_t hme_pci_driver = {
99 "hme",
100 hme_pci_methods,
101 sizeof(struct hme_pci_softc)
102 };
103
104 DRIVER_MODULE(if_hme, pci, hme_pci_driver, hme_devclass, 0, 0);
105
106 int
107 hme_pci_probe(device_t dev)
108 {
109
110 if (pci_get_vendor(dev) == 0x108e &&
111 pci_get_device(dev) == 0x1001) {
112 device_set_desc(dev, "Sun HME 10/100 Ethernet");
113 return (0);
114 }
115 return (ENXIO);
116 }
117
118 int
119 hme_pci_attach(device_t dev)
120 {
121 struct hme_pci_softc *hsc = device_get_softc(dev);
122 struct hme_softc *sc = &hsc->hsc_hme;
123 int error;
124
125 /*
126 * Enable memory-space and bus master accesses. This is kinda of
127 * gross; but the hme comes up with neither enabled.
128 */
129 pci_enable_busmaster(dev);
130 pci_enable_io(dev, SYS_RES_MEMORY);
131
132 sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */
133 sc->sc_dev = dev;
134
135 /*
136 * Map five register banks:
137 *
138 * bank 0: HME SEB registers: +0x0000
139 * bank 1: HME ETX registers: +0x2000
140 * bank 2: HME ERX registers: +0x4000
141 * bank 3: HME MAC registers: +0x6000
142 * bank 4: HME MIF registers: +0x7000
143 *
144 */
145 hsc->hsc_srid = PCI_HME_BASEADDR;
146 hsc->hsc_sres = bus_alloc_resource(dev, SYS_RES_MEMORY, &hsc->hsc_srid,
147 0, ~0, 1, RF_ACTIVE);
148 if (hsc->hsc_sres == NULL) {
149 device_printf(dev, "could not map device registers\n");
150 return (ENXIO);
151 }
152 hsc->hsc_irid = 0;
153 hsc->hsc_ires = bus_alloc_resource(dev, SYS_RES_IRQ, &hsc->hsc_irid, 0,
154 ~0, 1, RF_SHAREABLE | RF_ACTIVE);
155 if (hsc->hsc_ires == NULL) {
156 device_printf(dev, "could not allocate interrupt\n");
157 error = ENXIO;
158 goto fail_sres;
159 }
160 sc->sc_sebt = sc->sc_etxt = sc->sc_erxt = sc->sc_mact = sc->sc_mift =
161 rman_get_bustag(hsc->hsc_sres);
162 sc->sc_sebh = sc->sc_etxh = sc->sc_erxh = sc->sc_mach = sc->sc_mifh =
163 rman_get_bushandle(hsc->hsc_sres);
164 sc->sc_sebo = 0;
165 sc->sc_etxo = 0x2000;
166 sc->sc_erxo = 0x4000;
167 sc->sc_maco = 0x6000;
168 sc->sc_mifo = 0x7000;
169
170 OF_getetheraddr(dev, sc->sc_arpcom.ac_enaddr);
171
172 sc->sc_burst = 64; /* XXX */
173
174 /*
175 * call the main configure
176 */
177 if ((error = hme_config(sc)) != 0) {
178 device_printf(dev, "could not be configured\n");
179 goto fail_ires;
180 }
181
182 if ((error = bus_setup_intr(dev, hsc->hsc_ires, INTR_TYPE_NET, hme_intr,
183 sc, &hsc->hsc_ih)) != 0) {
184 device_printf(dev, "couldn't establish interrupt\n");
185 goto fail_ires;
186 }
187 return (0);
188
189 fail_ires:
190 bus_release_resource(dev, SYS_RES_IRQ, hsc->hsc_irid, hsc->hsc_ires);
191 fail_sres:
192 bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_srid, hsc->hsc_sres);
193 return (ENXIO);
194 }
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