xref: /freebsd/sys/dev/etherswitch/ip17x/ip17x_vlans.c (revision a98ff317388a00b992f1bf8404dee596f9383f5e)
1 /*-
2  * Copyright (c) 2013 Luiz Otavio O Souza.
3  * Copyright (c) 2011-2012 Stefan Bethke.
4  * Copyright (c) 2012 Adrian Chadd.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, 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  * $FreeBSD$
29  */
30 
31 #include <sys/param.h>
32 #include <sys/bus.h>
33 #include <sys/errno.h>
34 #include <sys/kernel.h>
35 #include <sys/systm.h>
36 #include <sys/socket.h>
37 
38 #include <net/if.h>
39 
40 #include <dev/mii/mii.h>
41 
42 #include <dev/etherswitch/etherswitch.h>
43 #include <dev/etherswitch/ip17x/ip17x_phy.h>
44 #include <dev/etherswitch/ip17x/ip17x_reg.h>
45 #include <dev/etherswitch/ip17x/ip17x_var.h>
46 #include <dev/etherswitch/ip17x/ip17x_vlans.h>
47 #include <dev/etherswitch/ip17x/ip175c.h>
48 
49 #include "mdio_if.h"
50 #include "miibus_if.h"
51 #include "etherswitch_if.h"
52 
53 /*
54  * Reset vlans to default state.
55  */
56 int
57 ip17x_reset_vlans(struct ip17x_softc *sc, uint32_t vlan_mode)
58 {
59 	struct ip17x_vlan *v;
60 	int i, j, phy;
61 
62 	/* Do not add or strip vlan tags on any port. */
63 	sc->addtag = 0;
64 	sc->striptag = 0;
65 
66 	/* Reset all vlan data. */
67 	memset(sc->vlan, 0, sizeof(sc->vlan));
68 	memset(sc->pvid, 0, sizeof(uint32_t) * sc->numports);
69 
70 	if (vlan_mode == ETHERSWITCH_VLAN_PORT) {
71 
72 		/* Initialize port based vlans. */
73 		for (i = 0, phy = 0; phy < MII_NPHY; phy++) {
74 			if (((1 << phy) & sc->phymask) == 0)
75 				continue;
76 			v = &sc->vlan[i];
77 			v->vlanid = i++ | ETHERSWITCH_VID_VALID;
78 			v->ports = (1 << sc->cpuport);
79 			for (j = 0; j < MII_NPHY; j++) {
80 				if (((1 << j) & sc->phymask) == 0)
81 					continue;
82 				v->ports |= (1 << j);
83 			}
84 		}
85 
86 	} else if (vlan_mode == ETHERSWITCH_VLAN_DOT1Q) {
87 
88 		/*
89 		 * Setup vlan 1 as PVID for all switch ports.  Add all ports as
90 		 * members of vlan 1.
91 		 */
92 		v = &sc->vlan[0];
93 		v->vlanid = 1 | ETHERSWITCH_VID_VALID;
94 		/* Set PVID to 1 for everyone. */
95 		for (i = 0; i < sc->numports; i++)
96 			sc->pvid[i] = 1;
97 		for (i = 0; i < MII_NPHY; i++) {
98 			if ((sc->phymask & (1 << i)) == 0)
99 				continue;
100 			v->ports |= (1 << i);
101 		}
102 	}
103 
104 	return (0);
105 }
106 
107 int
108 ip17x_getvgroup(device_t dev, etherswitch_vlangroup_t *vg)
109 {
110 	struct ip17x_softc *sc;
111 	uint32_t port;
112 	int i;
113 
114 	sc = device_get_softc(dev);
115 
116 	/* Vlan ID. */
117 	vg->es_vid = sc->vlan[vg->es_vlangroup].vlanid;
118 
119 	/* Member Ports. */
120 	vg->es_member_ports = 0;
121 	for (i = 0; i < MII_NPHY; i++) {
122 		if ((sc->phymask & (1 << i)) == 0)
123 			continue;
124 		if ((sc->vlan[vg->es_vlangroup].ports & (1 << i)) == 0)
125 			continue;
126 		port = sc->phyport[i];
127 		vg->es_member_ports |= (1 << port);
128 	}
129 
130 	/* Not supported. */
131 	vg->es_untagged_ports = vg->es_member_ports;
132 	vg->es_fid = 0;
133 
134 	return (0);
135 }
136 
137 int
138 ip17x_setvgroup(device_t dev, etherswitch_vlangroup_t *vg)
139 {
140 	struct ip17x_softc *sc;
141 	uint32_t phy;
142 	int i;
143 
144 	sc = device_get_softc(dev);
145 
146 	/* Check VLAN mode. */
147 	if (sc->vlan_mode == 0)
148 		return (EINVAL);
149 
150 	/* IP175C don't support VLAN IDs > 15. */
151 	if (IP17X_IS_SWITCH(sc, IP175C) &&
152 	    (vg->es_vid & ETHERSWITCH_VID_MASK) > IP175C_LAST_VLAN)
153 		return (EINVAL);
154 
155 	/* Vlan ID. */
156 	if (sc->vlan_mode == ETHERSWITCH_VLAN_DOT1Q) {
157 		for (i = 0; i < sc->info.es_nvlangroups; i++) {
158 			/* Is this Vlan ID already set in another vlangroup ? */
159 			if (i != vg->es_vlangroup &&
160 			    sc->vlan[i].vlanid & ETHERSWITCH_VID_VALID &&
161 			    (sc->vlan[i].vlanid & ETHERSWITCH_VID_MASK) ==
162 			    (vg->es_vid & ETHERSWITCH_VID_MASK))
163 				return (EINVAL);
164 		}
165 		sc->vlan[vg->es_vlangroup].vlanid = vg->es_vid &
166 		    ETHERSWITCH_VID_MASK;
167 		/* Setting the vlanid to zero disables the vlangroup. */
168 		if (sc->vlan[vg->es_vlangroup].vlanid == 0) {
169 			sc->vlan[vg->es_vlangroup].ports = 0;
170 			return (sc->hal.ip17x_hw_setup(sc));
171 		}
172 		sc->vlan[vg->es_vlangroup].vlanid |= ETHERSWITCH_VID_VALID;
173 	}
174 
175 	/* Member Ports. */
176 	sc->vlan[vg->es_vlangroup].ports = 0;
177 	for (i = 0; i < sc->numports; i++) {
178 		if ((vg->es_member_ports & (1 << i)) == 0)
179 			continue;
180 		phy = sc->portphy[i];
181 		sc->vlan[vg->es_vlangroup].ports |= (1 << phy);
182 	}
183 
184 	return (sc->hal.ip17x_hw_setup(sc));
185 }
186