xref: /freebsd/sys/dev/etherswitch/ip17x/ip175d.c (revision 248dd6039ded56dd72f1a77cf0148a9b113ad3c8)
1 /*-
2  * Copyright (c) 2013 Luiz Otavio O Souza.
3  * Copyright (c) 2011-2012 Stefan Bethke.
4  * Copyright (c) 2012 Adrian Chadd.
5  * Copyright (C) 2008 Patrick Horn.
6  * Copyright (C) 2008, 2010 Martin Mares.
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  *
30  * $FreeBSD$
31  */
32 
33 #include <sys/param.h>
34 #include <sys/bus.h>
35 #include <sys/kernel.h>
36 #include <sys/lock.h>
37 #include <sys/mutex.h>
38 #include <sys/systm.h>
39 #include <sys/socket.h>
40 
41 #include <net/if.h>
42 
43 #include <dev/mii/mii.h>
44 
45 #include <dev/etherswitch/etherswitch.h>
46 #include <dev/etherswitch/ip17x/ip17x_phy.h>
47 #include <dev/etherswitch/ip17x/ip17x_reg.h>
48 #include <dev/etherswitch/ip17x/ip17x_var.h>
49 #include <dev/etherswitch/ip17x/ip17x_vlans.h>
50 #include <dev/etherswitch/ip17x/ip175d.h>
51 
52 /*
53  * IP175D specific functions.
54  */
55 
56 /*
57  * Reset the switch to default state.
58  */
59 static int
60 ip175d_reset(struct ip17x_softc *sc)
61 {
62 
63 	/* Reset all the switch settings. */
64 	ip17x_writephy(sc->sc_dev, IP175D_RESET_PHY, IP175D_RESET_REG, 0x175d);
65 	DELAY(2);
66 
67 	/* Disable the special tagging mode. */
68 	ip17x_updatephy(sc->sc_dev, 21, 22, 0x3, 0x0);
69 
70 	/* Set 802.1q protocol type. */
71 	ip17x_writephy(sc->sc_dev, 22, 3, 0x8100);
72 
73 	return (0);
74 }
75 
76 /*
77  * Set the Switch configuration.
78  */
79 static int
80 ip175d_hw_setup(struct ip17x_softc *sc)
81 {
82 	struct ip17x_vlan *v;
83 	uint32_t ports[IP17X_MAX_VLANS];
84 	uint32_t addtag[IP17X_MAX_VLANS];
85 	uint32_t striptag[IP17X_MAX_VLANS];
86 	uint32_t vlan_mask;
87 	int i, j;
88 
89 	vlan_mask = 0;
90 	for (i = 0; i < IP17X_MAX_VLANS; i++) {
91 
92 		ports[i] = 0;
93 		addtag[i] = 0;
94 		striptag[i] = 0;
95 
96 		v = &sc->vlan[i];
97 		if (v->vlanid == 0 || sc->vlan_mode == 0) {
98 			/* Vlangroup disabled.  Reset the filter. */
99 			ip17x_writephy(sc->sc_dev, 22, 14 + i, i + 1);
100 			ports[i] = 0x3f;
101 			continue;
102 		}
103 
104 		vlan_mask |= (1 << i);
105 		ports[i] = v->ports;
106 
107 		/* Setup the filter, write the VLAN id. */
108 		ip17x_writephy(sc->sc_dev, 22, 14 + i, v->vlanid);
109 
110 		for (j = 0; j < MII_NPHY; j++) {
111 			if ((ports[i] & (1 << j)) == 0)
112 				continue;
113 			if (sc->addtag & (1 << j))
114 				addtag[i] |= (1 << j);
115 			if (sc->striptag & (1 << j))
116 				striptag[i] |= (1 << j);
117 		}
118 	}
119 
120 	/* Write the port masks, tag adds and removals. */
121 	for (i = 0; i < IP17X_MAX_VLANS / 2; i++) {
122 		ip17x_writephy(sc->sc_dev, 23, i,
123 		    ports[2 * i] | (ports[2 * i + 1] << 8));
124 		ip17x_writephy(sc->sc_dev, 23, i + 8,
125 		    addtag[2 * i] | (addtag[2 * i + 1] << 8));
126 		ip17x_writephy(sc->sc_dev, 23, i + 16,
127 		    striptag[2 * i] | (striptag[2 * i + 1] << 8));
128 	}
129 
130 	/* Write the in use vlan mask. */
131 	ip17x_writephy(sc->sc_dev, 22, 10, vlan_mask);
132 
133 	/* Write the PVID of each port. */
134 	for (i = 0; i < sc->numports; i++)
135 		ip17x_writephy(sc->sc_dev, 22, 4 + i, sc->pvid[i]);
136 
137 	return (0);
138 }
139 
140 /*
141  * Set the switch VLAN mode.
142  */
143 static int
144 ip175d_set_vlan_mode(struct ip17x_softc *sc, uint32_t mode)
145 {
146 
147 	switch (mode) {
148 	case ETHERSWITCH_VLAN_DOT1Q:
149 		/*
150 		 * VLAN classification rules: tag-based VLANs,
151 		 * use VID to classify, drop packets that cannot
152 		 * be classified.
153 		 */
154 		ip17x_updatephy(sc->sc_dev, 22, 0, 0x3fff, 0x003f);
155 		sc->vlan_mode = mode;
156 		break;
157 	case ETHERSWITCH_VLAN_PORT:
158 		sc->vlan_mode = mode;
159 		/* fallthrough */
160 	default:
161 		/*
162 		 * VLAN classification rules: everything off &
163 		 * clear table.
164 		 */
165 		ip17x_updatephy(sc->sc_dev, 22, 0, 0xbfff, 0x8000);
166 		sc->vlan_mode = 0;
167 		break;
168 	};
169 
170 	if (sc->vlan_mode != 0) {
171 		/*
172 		 * Ingress rules: CFI=1 dropped, null VID is untagged, VID=1 passed,
173 		 * VID=0xfff discarded, admin both tagged and untagged, ingress
174 		 * filters enabled.
175 		 */
176 		ip17x_updatephy(sc->sc_dev, 22, 1, 0x0fff, 0x0c3f);
177 
178 		/* Egress rules: IGMP processing off, keep VLAN header off. */
179 		ip17x_updatephy(sc->sc_dev, 22, 2, 0x0fff, 0x0000);
180 	} else {
181 		ip17x_updatephy(sc->sc_dev, 22, 1, 0x0fff, 0x043f);
182 		ip17x_updatephy(sc->sc_dev, 22, 2, 0x0fff, 0x0020);
183 	}
184 
185 	/* Reset vlans. */
186 	ip17x_reset_vlans(sc, sc->vlan_mode);
187 
188 	/* Update switch configuration. */
189 	ip175d_hw_setup(sc);
190 
191 	return (0);
192 }
193 
194 /*
195  * Get the switch VLAN mode.
196  */
197 static int
198 ip175d_get_vlan_mode(struct ip17x_softc *sc)
199 {
200 
201 	return (sc->vlan_mode);
202 }
203 
204 void
205 ip175d_attach(struct ip17x_softc *sc)
206 {
207 
208 	sc->hal.ip17x_reset = ip175d_reset;
209 	sc->hal.ip17x_hw_setup = ip175d_hw_setup;
210 	sc->hal.ip17x_get_vlan_mode = ip175d_get_vlan_mode;
211 	sc->hal.ip17x_set_vlan_mode = ip175d_set_vlan_mode;
212 
213 	/* Defaults for IP175C. */
214 	sc->cpuport = IP175X_CPU_PORT;
215 	sc->numports = IP175X_NUM_PORTS;
216 	sc->info.es_vlan_caps = ETHERSWITCH_VLAN_DOT1Q;
217 
218 	device_printf(sc->sc_dev, "type: IP175D\n");
219 }
220