1 /*
2 * Copyright (c) 2017 Stormshield.
3 * Copyright (c) 2017 Semihalf.
4 * All rights reserved.
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 ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "opt_platform.h"
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD: stable/12/sys/dev/neta/if_mvneta_fdt.c 332310 2018-04-08 22:59:34Z gonzo $");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/bus.h>
37 #include <sys/rman.h>
38 #include <sys/socket.h>
39 #include <sys/taskqueue.h>
40
41 #include <net/ethernet.h>
42 #include <net/if.h>
43 #include <net/if_media.h>
44
45 #include <netinet/in.h>
46 #include <netinet/ip.h>
47 #include <netinet/tcp_lro.h>
48
49 #include <machine/bus.h>
50 #include <machine/resource.h>
51
52 #include <dev/ofw/ofw_bus.h>
53 #include <dev/ofw/ofw_bus_subr.h>
54
55 #include <dev/mii/mii.h>
56 #include <dev/mii/miivar.h>
57
58 #include "if_mvnetareg.h"
59 #include "if_mvnetavar.h"
60
61 #define PHY_MODE_MAXLEN 10
62 #define INBAND_STATUS_MAXLEN 16
63
64 static int mvneta_fdt_probe(device_t);
65 static int mvneta_fdt_attach(device_t);
66
67 static device_method_t mvneta_fdt_methods[] = {
68 /* Device interface */
69 DEVMETHOD(device_probe, mvneta_fdt_probe),
70 DEVMETHOD(device_attach, mvneta_fdt_attach),
71
72 /* End */
73 DEVMETHOD_END
74 };
75
76 DEFINE_CLASS_1(mvneta, mvneta_fdt_driver, mvneta_fdt_methods,
77 sizeof(struct mvneta_softc), mvneta_driver);
78
79 static devclass_t mvneta_fdt_devclass;
80
81 DRIVER_MODULE(mvneta, ofwbus, mvneta_fdt_driver, mvneta_fdt_devclass, 0, 0);
82 DRIVER_MODULE(mvneta, simplebus, mvneta_fdt_driver, mvneta_fdt_devclass, 0, 0);
83
84 static int mvneta_fdt_phy_acquire(device_t);
85
86 static struct ofw_compat_data compat_data[] = {
87 {"marvell,armada-370-neta", true},
88 {"marvell,armada-3700-neta", true},
89 {NULL, false}
90 };
91
92 static int
mvneta_fdt_probe(device_t dev)93 mvneta_fdt_probe(device_t dev)
94 {
95
96 if (!ofw_bus_status_okay(dev))
97 return (ENXIO);
98
99 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
100 return (ENXIO);
101
102 device_set_desc(dev, "NETA controller");
103 return (BUS_PROBE_DEFAULT);
104 }
105
106 static int
mvneta_fdt_attach(device_t dev)107 mvneta_fdt_attach(device_t dev)
108 {
109 int err;
110
111 /* Try to fetch PHY information from FDT */
112 err = mvneta_fdt_phy_acquire(dev);
113 if (err != 0)
114 return (err);
115
116 return (mvneta_attach(dev));
117 }
118
119 static int
mvneta_fdt_phy_acquire(device_t dev)120 mvneta_fdt_phy_acquire(device_t dev)
121 {
122 struct mvneta_softc *sc;
123 phandle_t node, child, phy_handle;
124 char phymode[PHY_MODE_MAXLEN];
125 char managed[INBAND_STATUS_MAXLEN];
126 char *name;
127
128 sc = device_get_softc(dev);
129 node = ofw_bus_get_node(dev);
130
131 /* PHY mode is crucial */
132 if (OF_getprop(node, "phy-mode", phymode, sizeof(phymode)) <= 0) {
133 device_printf(dev, "Failed to acquire PHY mode from FDT.\n");
134 return (ENXIO);
135 }
136
137 if (strncmp(phymode, "rgmii-id", 8) == 0)
138 sc->phy_mode = MVNETA_PHY_RGMII_ID;
139 else if (strncmp(phymode, "rgmii", 5) == 0)
140 sc->phy_mode = MVNETA_PHY_RGMII;
141 else if (strncmp(phymode, "sgmii", 5) == 0)
142 sc->phy_mode = MVNETA_PHY_SGMII;
143 else if (strncmp(phymode, "qsgmii", 6) == 0)
144 sc->phy_mode = MVNETA_PHY_QSGMII;
145 else
146 sc->phy_mode = MVNETA_PHY_SGMII;
147
148 /* Check if in-band link status will be used */
149 if (OF_getprop(node, "managed", managed, sizeof(managed)) > 0) {
150 if (strncmp(managed, "in-band-status", 14) == 0) {
151 sc->use_inband_status = TRUE;
152 device_printf(dev, "Use in-band link status.\n");
153 return (0);
154 }
155 }
156
157 if (OF_getencprop(node, "phy", (void *)&phy_handle,
158 sizeof(phy_handle)) <= 0) {
159 /* Test for fixed-link (present i.e. in 388-gp) */
160 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
161 if (OF_getprop_alloc(child,
162 "name", (void **)&name) <= 0) {
163 continue;
164 }
165 if (strncmp(name, "fixed-link", 10) == 0) {
166 free(name, M_OFWPROP);
167 if (OF_getencprop(child, "speed",
168 &sc->phy_speed, sizeof(sc->phy_speed)) <= 0) {
169 if (bootverbose) {
170 device_printf(dev,
171 "No PHY information.\n");
172 }
173 return (ENXIO);
174 }
175 if (OF_hasprop(child, "full-duplex"))
176 sc->phy_fdx = TRUE;
177 else
178 sc->phy_fdx = FALSE;
179
180 /* Keep this flag just for the record */
181 sc->phy_addr = MII_PHY_ANY;
182
183 return (0);
184 }
185 free(name, M_OFWPROP);
186 }
187 if (bootverbose) {
188 device_printf(dev,
189 "Could not find PHY information in FDT.\n");
190 }
191 return (ENXIO);
192 } else {
193 phy_handle = OF_instance_to_package(phy_handle);
194 if (OF_getencprop(phy_handle, "reg", &sc->phy_addr,
195 sizeof(sc->phy_addr)) <= 0) {
196 device_printf(dev,
197 "Could not find PHY address in FDT.\n");
198 return (ENXIO);
199 }
200 }
201
202 return (0);
203 }
204
205 int
mvneta_fdt_mac_address(struct mvneta_softc * sc,uint8_t * addr)206 mvneta_fdt_mac_address(struct mvneta_softc *sc, uint8_t *addr)
207 {
208 phandle_t node;
209 uint8_t lmac[ETHER_ADDR_LEN];
210 uint8_t zeromac[] = {[0 ... (ETHER_ADDR_LEN - 1)] = 0};
211 int len;
212
213 /*
214 * Retrieve hw address from the device tree.
215 */
216 node = ofw_bus_get_node(sc->dev);
217 if (node == 0)
218 return (ENXIO);
219
220 len = OF_getprop(node, "local-mac-address", (void *)lmac, sizeof(lmac));
221 if (len != ETHER_ADDR_LEN)
222 return (ENOENT);
223
224 if (memcmp(lmac, zeromac, ETHER_ADDR_LEN) == 0) {
225 /* Invalid MAC address (all zeros) */
226 return (EINVAL);
227 }
228 memcpy(addr, lmac, ETHER_ADDR_LEN);
229
230 return (0);
231 }
232