1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2012,2013 Bjoern A. Zeeb
5 * All rights reserved.
6 *
7 * This software was developed by SRI International and the University of
8 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-11-C-0249)
9 * ("MRC2"), as part of the DARPA MRC research programme.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 #include "opt_device_polling.h"
35
36 #include <sys/param.h>
37 #include <sys/kernel.h>
38 #include <sys/bus.h>
39 #include <sys/module.h>
40 #include <sys/rman.h>
41 #include <sys/socket.h>
42 #include <sys/types.h>
43
44 #include <machine/bus.h>
45 #include <machine/resource.h>
46
47 #include <net/ethernet.h>
48 #include <net/if.h>
49 #include <net/if_media.h>
50 #include <net/if_var.h>
51
52 #include <dev/mii/mii.h>
53 #include <dev/mii/miivar.h>
54
55 #include <dev/altera/atse/if_atsereg.h>
56
57 /* "device miibus" required. See GENERIC if you get errors here. */
58 #include "miibus_if.h"
59
60 MODULE_DEPEND(atse, ether, 1, 1, 1);
61 MODULE_DEPEND(atse, miibus, 1, 1, 1);
62
63 /*
64 * Device routines for interacting with nexus (probe, attach, detach) & helpers.
65 * XXX We should add suspend/resume later.
66 */
67 static int __unused
atse_resource_int(device_t dev,const char * resname,int * v)68 atse_resource_int(device_t dev, const char *resname, int *v)
69 {
70 int error;
71
72 error = resource_int_value(device_get_name(dev), device_get_unit(dev),
73 resname, v);
74 if (error != 0) {
75 /* If it does not exist, we fail, so not ingoring ENOENT. */
76 device_printf(dev, "could not fetch '%s' hint\n", resname);
77 return (error);
78 }
79
80 return (0);
81 }
82
83 static int __unused
atse_resource_long(device_t dev,const char * resname,long * v)84 atse_resource_long(device_t dev, const char *resname, long *v)
85 {
86 int error;
87
88 error = resource_long_value(device_get_name(dev), device_get_unit(dev),
89 resname, v);
90 if (error != 0) {
91 /* If it does not exist, we fail, so not ingoring ENOENT. */
92 device_printf(dev, "could not fetch '%s' hint\n", resname);
93 return (error);
94 }
95
96 return (0);
97 }
98
99 static int
atse_probe_nexus(device_t dev)100 atse_probe_nexus(device_t dev)
101 {
102
103 device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore");
104
105 return (BUS_PROBE_NOWILDCARD);
106 }
107
108 static int
atse_attach_nexus(device_t dev)109 atse_attach_nexus(device_t dev)
110 {
111 struct atse_softc *sc;
112 int error;
113
114 sc = device_get_softc(dev);
115 sc->atse_dev = dev;
116 sc->atse_unit = device_get_unit(dev);
117
118 /* Avalon-MM, atse management register region. */
119 sc->atse_mem_rid = 0;
120 sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
121 &sc->atse_mem_rid, RF_ACTIVE);
122 if (sc->atse_mem_res == NULL) {
123 device_printf(dev, "failed to map memory for ctrl region\n");
124 return (ENXIO);
125 }
126
127 error = atse_attach(dev);
128 if (error) {
129 /* Cleanup. */
130 atse_detach_resources(dev);
131 return (error);
132 }
133
134 return (0);
135 }
136
137 static device_method_t atse_methods_nexus[] = {
138 /* Device interface */
139 DEVMETHOD(device_probe, atse_probe_nexus),
140 DEVMETHOD(device_attach, atse_attach_nexus),
141 DEVMETHOD(device_detach, atse_detach_dev),
142
143 /* MII interface */
144 DEVMETHOD(miibus_readreg, atse_miibus_readreg),
145 DEVMETHOD(miibus_writereg, atse_miibus_writereg),
146 DEVMETHOD(miibus_statchg, atse_miibus_statchg),
147
148 DEVMETHOD_END
149 };
150
151 static driver_t atse_driver_nexus = {
152 "atse",
153 atse_methods_nexus,
154 sizeof(struct atse_softc)
155 };
156
157 DRIVER_MODULE(atse, nexus, atse_driver_nexus, atse_devclass, 0, 0);
158 DRIVER_MODULE(miibus, atse, miibus_driver, miibus_devclass, 0, 0);
159