arswitch_8316.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2011-2012 Stefan Bethke.
5 * Copyright (c) 2012 Adrian Chadd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/11/sys/dev/etherswitch/arswitch/arswitch_8316.c 330897 2018-03-14 03:19:51Z eadler $
30 */
31
32#include <sys/param.h>
33#include <sys/bus.h>
34#include <sys/errno.h>
35#include <sys/kernel.h>
36#include <sys/module.h>
37#include <sys/socket.h>
38#include <sys/sockio.h>
39#include <sys/sysctl.h>
40#include <sys/systm.h>
41
42#include <net/if.h>
43#include <net/if_arp.h>
44#include <net/ethernet.h>
45#include <net/if_dl.h>
46#include <net/if_media.h>
47#include <net/if_types.h>
48
49#include <machine/bus.h>
50#include <dev/iicbus/iic.h>
51#include <dev/iicbus/iiconf.h>
52#include <dev/iicbus/iicbus.h>
53#include <dev/mii/mii.h>
54#include <dev/mii/miivar.h>
55#include <dev/mdio/mdio.h>
56
57#include <dev/etherswitch/etherswitch.h>
58
59#include <dev/etherswitch/arswitch/arswitchreg.h>
60#include <dev/etherswitch/arswitch/arswitchvar.h>
61#include <dev/etherswitch/arswitch/arswitch_reg.h>
62#include <dev/etherswitch/arswitch/arswitch_8316.h>
63
64#include "mdio_if.h"
65#include "miibus_if.h"
66#include "etherswitch_if.h"
67
68/*
69 * AR8316 specific functions
70 */
71static int
72ar8316_hw_setup(struct arswitch_softc *sc)
73{
74
75	/*
76	 * Configure the switch mode based on whether:
77	 *
78	 * + The switch port is GMII/RGMII;
79	 * + Port 4 is either connected to the CPU or to the internal switch.
80	 */
81	if (sc->is_rgmii && sc->phy4cpu) {
82		arswitch_writereg(sc->sc_dev, AR8X16_REG_MODE,
83		    AR8X16_MODE_RGMII_PORT4_ISO);
84		device_printf(sc->sc_dev,
85		    "%s: MAC port == RGMII, port 4 = dedicated PHY\n",
86		    __func__);
87	} else if (sc->is_rgmii) {
88		arswitch_writereg(sc->sc_dev, AR8X16_REG_MODE,
89		    AR8X16_MODE_RGMII_PORT4_SWITCH);
90		device_printf(sc->sc_dev,
91		    "%s: MAC port == RGMII, port 4 = switch port\n",
92		    __func__);
93	} else if (sc->is_gmii) {
94		arswitch_writereg(sc->sc_dev, AR8X16_REG_MODE,
95		    AR8X16_MODE_GMII);
96		device_printf(sc->sc_dev, "%s: MAC port == GMII\n", __func__);
97	} else {
98		device_printf(sc->sc_dev, "%s: unknown switch PHY config\n",
99		    __func__);
100		return (ENXIO);
101	}
102
103	DELAY(1000);	/* 1ms wait for things to settle */
104
105	/*
106	 * If port 4 is RGMII, force workaround
107	 */
108	if (sc->is_rgmii && sc->phy4cpu) {
109		device_printf(sc->sc_dev,
110		    "%s: port 4 RGMII workaround\n",
111		    __func__);
112
113		/* work around for phy4 rgmii mode */
114		arswitch_writedbg(sc->sc_dev, 4, 0x12, 0x480c);
115		/* rx delay */
116		arswitch_writedbg(sc->sc_dev, 4, 0x0, 0x824e);
117		/* tx delay */
118		arswitch_writedbg(sc->sc_dev, 4, 0x5, 0x3d47);
119		DELAY(1000);	/* 1ms, again to let things settle */
120	}
121
122	return (0);
123}
124
125/*
126 * Initialise other global values, for the AR8316.
127 */
128static int
129ar8316_hw_global_setup(struct arswitch_softc *sc)
130{
131
132	arswitch_writereg(sc->sc_dev, 0x38, AR8X16_MAGIC);
133
134	/* Enable CPU port and disable mirror port. */
135	arswitch_writereg(sc->sc_dev, AR8X16_REG_CPU_PORT,
136	    AR8X16_CPU_PORT_EN | AR8X16_CPU_MIRROR_DIS);
137
138	/* Setup TAG priority mapping. */
139	arswitch_writereg(sc->sc_dev, AR8X16_REG_TAG_PRIO, 0xfa50);
140
141	/* Enable ARP frame acknowledge. */
142	/* XXX TODO: aging? */
143	arswitch_modifyreg(sc->sc_dev, AR8X16_REG_AT_CTRL, 0,
144	    AR8X16_AT_CTRL_ARP_EN);
145
146	/*
147	 * Flood address table misses to all ports, and enable forwarding of
148	 * broadcasts to the cpu port.
149	 */
150	arswitch_writereg(sc->sc_dev, AR8X16_REG_FLOOD_MASK,
151	    AR8X16_FLOOD_MASK_BCAST_TO_CPU | 0x003f003f);
152
153	/* Enable jumbo frames. */
154	arswitch_modifyreg(sc->sc_dev, AR8X16_REG_GLOBAL_CTRL,
155	    AR8316_GLOBAL_CTRL_MTU_MASK, 9018 + 8 + 2);
156
157	/* Setup service TAG. */
158	arswitch_modifyreg(sc->sc_dev, AR8X16_REG_SERVICE_TAG,
159	    AR8X16_SERVICE_TAG_MASK, 0);
160
161	return (0);
162}
163
164void
165ar8316_attach(struct arswitch_softc *sc)
166{
167
168	sc->hal.arswitch_hw_setup = ar8316_hw_setup;
169	sc->hal.arswitch_hw_global_setup = ar8316_hw_global_setup;
170
171	/* Set the switch vlan capabilities. */
172	sc->info.es_vlan_caps = ETHERSWITCH_VLAN_DOT1Q |
173	    ETHERSWITCH_VLAN_PORT | ETHERSWITCH_VLAN_DOUBLE_TAG;
174	sc->info.es_nvlangroups = AR8X16_MAX_VLANS;
175}
176