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
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/module.h>
34 #include <sys/bus.h>
35 #include <sys/rman.h>
36 #include <sys/socket.h>
37 #include <sys/taskqueue.h>
38
39 #include <net/ethernet.h>
40 #include <net/if.h>
41 #include <net/if_media.h>
42
43 #include <netinet/in.h>
44 #include <netinet/ip.h>
45 #include <netinet/tcp_lro.h>
46
47 #include <machine/bus.h>
48 #include <machine/resource.h>
49
50 #include <dev/ofw/ofw_bus.h>
51 #include <dev/ofw/ofw_bus_subr.h>
52
53 #include <dev/mii/mii.h>
54 #include <dev/mii/miivar.h>
55
56 #include "if_mvnetareg.h"
57 #include "if_mvnetavar.h"
58
59 #ifdef MVNETA_DEBUG
60 #define STATIC /* nothing */
61 #else
62 #define STATIC static
63 #endif
64
65 #define PHY_MODE_MAXLEN 10
66 #define INBAND_STATUS_MAXLEN 16
67
68 static int mvneta_fdt_probe(device_t);
69 static int mvneta_fdt_attach(device_t);
70 STATIC boolean_t mvneta_find_ethernet_prop_switch(phandle_t, phandle_t);
71
72 static device_method_t mvneta_fdt_methods[] = {
73 /* Device interface */
74 DEVMETHOD(device_probe, mvneta_fdt_probe),
75 DEVMETHOD(device_attach, mvneta_fdt_attach),
76
77 /* End */
78 DEVMETHOD_END
79 };
80
81 DEFINE_CLASS_1(mvneta, mvneta_fdt_driver, mvneta_fdt_methods,
82 sizeof(struct mvneta_softc), mvneta_driver);
83
84 DRIVER_MODULE(mvneta, ofwbus, mvneta_fdt_driver, 0, 0);
85 DRIVER_MODULE(mvneta, simplebus, mvneta_fdt_driver, 0, 0);
86
87 static int mvneta_fdt_phy_acquire(device_t);
88
89 static struct ofw_compat_data compat_data[] = {
90 {"marvell,armada-370-neta", true},
91 {"marvell,armada-3700-neta", true},
92 {NULL, false}
93 };
94
95 SIMPLEBUS_PNP_INFO(compat_data);
96
97 static int
mvneta_fdt_probe(device_t dev)98 mvneta_fdt_probe(device_t dev)
99 {
100
101 if (!ofw_bus_status_okay(dev))
102 return (ENXIO);
103
104 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
105 return (ENXIO);
106
107 device_set_desc(dev, "NETA controller");
108 return (BUS_PROBE_DEFAULT);
109 }
110
111 static int
mvneta_fdt_attach(device_t dev)112 mvneta_fdt_attach(device_t dev)
113 {
114 struct mvneta_softc *sc;
115 uint32_t tx_csum_limit;
116 int err;
117
118 sc = device_get_softc(dev);
119
120 /* Try to fetch PHY information from FDT */
121 err = mvneta_fdt_phy_acquire(dev);
122 if (err != 0)
123 return (err);
124
125 if (ofw_bus_is_compatible(dev, "marvell,armada-370-neta")) {
126 tx_csum_limit = MVNETA_A370_MAX_CSUM_MTU;
127 } else {
128 tx_csum_limit = MVNETA_A3700_MAX_CSUM_MTU;
129 }
130
131 if (ofw_bus_has_prop(dev, "tx-csum-limit")) {
132 err = OF_getencprop(ofw_bus_get_node(dev), "tx-csum-limit",
133 &tx_csum_limit, sizeof(tx_csum_limit));
134 if (err <= 0) {
135 device_printf(dev,
136 "Failed to acquire tx-csum-limit property\n");
137 return (ENXIO);
138 }
139 }
140 sc->tx_csum_limit = tx_csum_limit;
141
142 return (mvneta_attach(dev));
143 }
144
145 static int
mvneta_fdt_phy_acquire(device_t dev)146 mvneta_fdt_phy_acquire(device_t dev)
147 {
148 struct mvneta_softc *sc;
149 phandle_t node, child, phy_handle;
150 char phymode[PHY_MODE_MAXLEN];
151 char managed[INBAND_STATUS_MAXLEN];
152 char *name;
153
154 sc = device_get_softc(dev);
155 node = ofw_bus_get_node(dev);
156
157 /* PHY mode is crucial */
158 if (OF_getprop(node, "phy-mode", phymode, sizeof(phymode)) <= 0) {
159 device_printf(dev, "Failed to acquire PHY mode from FDT.\n");
160 return (ENXIO);
161 }
162
163 if (strncmp(phymode, "rgmii-id", 8) == 0)
164 sc->phy_mode = MVNETA_PHY_RGMII_ID;
165 else if (strncmp(phymode, "rgmii", 5) == 0)
166 sc->phy_mode = MVNETA_PHY_RGMII;
167 else if (strncmp(phymode, "sgmii", 5) == 0)
168 sc->phy_mode = MVNETA_PHY_SGMII;
169 else if (strncmp(phymode, "qsgmii", 6) == 0)
170 sc->phy_mode = MVNETA_PHY_QSGMII;
171 else
172 sc->phy_mode = MVNETA_PHY_SGMII;
173
174 /* Check if in-band link status will be used */
175 if (OF_getprop(node, "managed", managed, sizeof(managed)) > 0) {
176 if (strncmp(managed, "in-band-status", 14) == 0) {
177 sc->use_inband_status = TRUE;
178 device_printf(dev, "Use in-band link status.\n");
179 return (0);
180 }
181 }
182
183 if (OF_getencprop(node, "phy", (void *)&phy_handle,
184 sizeof(phy_handle)) <= 0) {
185 /* Test for fixed-link (present i.e. in 388-gp) */
186 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
187 if (OF_getprop_alloc(child,
188 "name", (void **)&name) <= 0) {
189 continue;
190 }
191 if (strncmp(name, "fixed-link", 10) == 0) {
192 free(name, M_OFWPROP);
193 if (OF_getencprop(child, "speed",
194 &sc->phy_speed, sizeof(sc->phy_speed)) <= 0) {
195 if (bootverbose) {
196 device_printf(dev,
197 "No PHY information.\n");
198 }
199 return (ENXIO);
200 }
201 if (OF_hasprop(child, "full-duplex"))
202 sc->phy_fdx = TRUE;
203 else
204 sc->phy_fdx = FALSE;
205
206 /* Keep this flag just for the record */
207 sc->phy_addr = MII_PHY_ANY;
208
209 return (0);
210 }
211 free(name, M_OFWPROP);
212 }
213 if (bootverbose) {
214 device_printf(dev,
215 "Could not find PHY information in FDT.\n");
216 }
217 return (ENXIO);
218 } else {
219 phy_handle = OF_instance_to_package(phy_handle);
220 if (OF_getencprop(phy_handle, "reg", &sc->phy_addr,
221 sizeof(sc->phy_addr)) <= 0) {
222 device_printf(dev,
223 "Could not find PHY address in FDT.\n");
224 return (ENXIO);
225 }
226 }
227
228 return (0);
229 }
230
231 int
mvneta_fdt_mac_address(struct mvneta_softc * sc,uint8_t * addr)232 mvneta_fdt_mac_address(struct mvneta_softc *sc, uint8_t *addr)
233 {
234 phandle_t node;
235 uint8_t lmac[ETHER_ADDR_LEN];
236 uint8_t zeromac[] = {[0 ... (ETHER_ADDR_LEN - 1)] = 0};
237 int len;
238
239 /*
240 * Retrieve hw address from the device tree.
241 */
242 node = ofw_bus_get_node(sc->dev);
243 if (node == 0)
244 return (ENXIO);
245
246 len = OF_getprop(node, "local-mac-address", (void *)lmac, sizeof(lmac));
247 if (len != ETHER_ADDR_LEN)
248 return (ENOENT);
249
250 if (memcmp(lmac, zeromac, ETHER_ADDR_LEN) == 0) {
251 /* Invalid MAC address (all zeros) */
252 return (EINVAL);
253 }
254 memcpy(addr, lmac, ETHER_ADDR_LEN);
255
256 return (0);
257 }
258
259 STATIC boolean_t
mvneta_find_ethernet_prop_switch(phandle_t ethernet,phandle_t node)260 mvneta_find_ethernet_prop_switch(phandle_t ethernet, phandle_t node)
261 {
262 boolean_t ret;
263 phandle_t child, switch_eth_handle, switch_eth;
264
265 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
266 if (OF_getencprop(child, "ethernet", (void*)&switch_eth_handle,
267 sizeof(switch_eth_handle)) > 0) {
268 if (switch_eth_handle > 0) {
269 switch_eth = OF_node_from_xref(
270 switch_eth_handle);
271
272 if (switch_eth == ethernet)
273 return (true);
274 }
275 }
276
277 ret = mvneta_find_ethernet_prop_switch(ethernet, child);
278 if (ret != 0)
279 return (ret);
280 }
281
282 return (false);
283 }
284
285 boolean_t
mvneta_has_switch_fdt(device_t self)286 mvneta_has_switch_fdt(device_t self)
287 {
288 phandle_t node;
289
290 node = ofw_bus_get_node(self);
291
292 return mvneta_find_ethernet_prop_switch(node, OF_finddevice("/"));
293 }
294