2 * net/dsa/mv88e6123_61_65.c - Marvell 88e6123/6161/6165 switch chip support
3 * Copyright (c) 2008 Marvell Semiconductor
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
11 #include <linux/list.h>
12 #include <linux/netdevice.h>
13 #include <linux/phy.h>
15 #include "mv88e6xxx.h"
17 static char *mv88e6123_61_65_probe(struct mii_bus *bus, int sw_addr)
21 ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), 0x03);
25 return "Marvell 88E6123";
27 return "Marvell 88E6161";
29 return "Marvell 88E6165";
35 static int mv88e6123_61_65_switch_reset(struct dsa_switch *ds)
41 * Set all ports to the disabled state.
43 for (i = 0; i < 8; i++) {
44 ret = REG_READ(REG_PORT(i), 0x04);
45 REG_WRITE(REG_PORT(i), 0x04, ret & 0xfffc);
49 * Wait for transmit queues to drain.
56 REG_WRITE(REG_GLOBAL, 0x04, 0xc400);
59 * Wait up to one second for reset to complete.
61 for (i = 0; i < 1000; i++) {
62 ret = REG_READ(REG_GLOBAL, 0x00);
63 if ((ret & 0xc800) == 0xc800)
74 static int mv88e6123_61_65_setup_global(struct dsa_switch *ds)
80 * Disable the PHY polling unit (since there won't be any
81 * external PHYs to poll), don't discard packets with
82 * excessive collisions, and mask all interrupt sources.
84 REG_WRITE(REG_GLOBAL, 0x04, 0x0000);
87 * Set the default address aging time to 5 minutes, and
88 * enable address learn messages to be sent to all message
91 REG_WRITE(REG_GLOBAL, 0x0a, 0x0148);
94 * Configure the priority mapping registers.
96 ret = mv88e6xxx_config_prio(ds);
101 * Configure the cpu port, and configure the cpu port as the
102 * port to which ingress and egress monitor frames are to be
105 REG_WRITE(REG_GLOBAL, 0x1a, (ds->cpu_port * 0x1110));
108 * Disable remote management for now, and set the switch's
109 * DSA device number to zero.
111 REG_WRITE(REG_GLOBAL, 0x1c, 0x0000);
114 * Send all frames with destination addresses matching
115 * 01:80:c2:00:00:2x to the CPU port.
117 REG_WRITE(REG_GLOBAL2, 0x02, 0xffff);
120 * Send all frames with destination addresses matching
121 * 01:80:c2:00:00:0x to the CPU port.
123 REG_WRITE(REG_GLOBAL2, 0x03, 0xffff);
126 * Disable the loopback filter, disable flow control
127 * messages, disable flood broadcast override, disable
128 * removing of provider tags, disable ATU age violation
129 * interrupts, disable tag flow control, force flow
130 * control priority to the highest, and send all special
131 * multicast frames to the CPU at the highest priority.
133 REG_WRITE(REG_GLOBAL2, 0x05, 0x00ff);
136 * Map all DSA device IDs to the CPU port.
138 for (i = 0; i < 32; i++)
139 REG_WRITE(REG_GLOBAL2, 0x06, 0x8000 | (i << 8) | ds->cpu_port);
142 * Clear all trunk masks.
144 for (i = 0; i < 8; i++)
145 REG_WRITE(REG_GLOBAL2, 0x07, 0x8000 | (i << 12) | 0xff);
148 * Clear all trunk mappings.
150 for (i = 0; i < 16; i++)
151 REG_WRITE(REG_GLOBAL2, 0x08, 0x8000 | (i << 11));
154 * Disable ingress rate limiting by resetting all ingress
155 * rate limit registers to their initial state.
157 for (i = 0; i < 6; i++)
158 REG_WRITE(REG_GLOBAL2, 0x09, 0x9000 | (i << 8));
161 * Initialise cross-chip port VLAN table to reset defaults.
163 REG_WRITE(REG_GLOBAL2, 0x0b, 0x9000);
166 * Clear the priority override table.
168 for (i = 0; i < 16; i++)
169 REG_WRITE(REG_GLOBAL2, 0x0f, 0x8000 | (i << 8));
171 /* @@@ initialise AVB (22/23) watchdog (27) sdet (29) registers */
176 static int mv88e6123_61_65_setup_port(struct dsa_switch *ds, int p)
178 int addr = REG_PORT(p);
181 * MAC Forcing register: don't force link, speed, duplex
182 * or flow control state to any particular values.
184 REG_WRITE(addr, 0x01, 0x0003);
187 * Do not limit the period of time that this port can be
188 * paused for by the remote end or the period of time that
189 * this port can pause the remote end.
191 REG_WRITE(addr, 0x02, 0x0000);
194 * Port Control: disable Drop-on-Unlock, disable Drop-on-Lock,
195 * configure the requested (DSA/EDSA) tagging mode if this is
196 * the CPU port, disable Header mode, enable IGMP/MLD snooping,
197 * disable VLAN tunneling, determine priority by looking at
198 * 802.1p and IP priority fields (IP prio has precedence), and
199 * set STP state to Forwarding. Finally, if this is the CPU
200 * port, additionally enable forwarding of unknown unicast and
201 * multicast addresses.
203 REG_WRITE(addr, 0x04,
204 (p == ds->cpu_port) ?
205 (ds->tag_protocol == htons(ETH_P_DSA)) ?
210 * Port Control 1: disable trunking. Also, if this is the
211 * CPU port, enable learn messages to be sent to this port.
213 REG_WRITE(addr, 0x05, (p == ds->cpu_port) ? 0x8000 : 0x0000);
216 * Port based VLAN map: give each port its own address
217 * database, allow the CPU port to talk to each of the 'real'
218 * ports, and allow each of the 'real' ports to only talk to
221 REG_WRITE(addr, 0x06,
223 ((p == ds->cpu_port) ?
224 ds->valid_port_mask :
225 (1 << ds->cpu_port)));
228 * Default VLAN ID and priority: don't set a default VLAN
229 * ID, and set the default packet priority to zero.
231 REG_WRITE(addr, 0x07, 0x0000);
234 * Port Control 2: don't force a good FCS, set the maximum
235 * frame size to 10240 bytes, don't let the switch add or
236 * strip 802.1q tags, don't discard tagged or untagged frames
237 * on this port, do a destination address lookup on all
238 * received packets as usual, disable ARP mirroring and don't
239 * send a copy of all transmitted/received frames on this port
242 REG_WRITE(addr, 0x08, 0x2080);
245 * Egress rate control: disable egress rate control.
247 REG_WRITE(addr, 0x09, 0x0001);
250 * Egress rate control 2: disable egress rate control.
252 REG_WRITE(addr, 0x0a, 0x0000);
255 * Port Association Vector: when learning source addresses
256 * of packets, add the address to the address database using
257 * a port bitmap that has only the bit for this port set and
258 * the other bits clear.
260 REG_WRITE(addr, 0x0b, 1 << p);
263 * Port ATU control: disable limiting the number of address
264 * database entries that this port is allowed to use.
266 REG_WRITE(addr, 0x0c, 0x0000);
269 * Priorit Override: disable DA, SA and VTU priority override.
271 REG_WRITE(addr, 0x0d, 0x0000);
274 * Port Ethertype: use the Ethertype DSA Ethertype value.
276 REG_WRITE(addr, 0x0f, ETH_P_EDSA);
279 * Tag Remap: use an identity 802.1p prio -> switch prio
282 REG_WRITE(addr, 0x18, 0x3210);
285 * Tag Remap 2: use an identity 802.1p prio -> switch prio
288 REG_WRITE(addr, 0x19, 0x7654);
293 static int mv88e6123_61_65_setup(struct dsa_switch *ds)
295 struct mv88e6xxx_priv_state *ps = (void *)(ds + 1);
299 mutex_init(&ps->smi_mutex);
300 mutex_init(&ps->stats_mutex);
302 ret = mv88e6123_61_65_switch_reset(ds);
306 /* @@@ initialise vtu and atu */
308 ret = mv88e6123_61_65_setup_global(ds);
312 for (i = 0; i < 6; i++) {
313 ret = mv88e6123_61_65_setup_port(ds, i);
321 static int mv88e6123_61_65_port_to_phy_addr(int port)
323 if (port >= 0 && port <= 4)
329 mv88e6123_61_65_phy_read(struct dsa_switch *ds, int port, int regnum)
331 int addr = mv88e6123_61_65_port_to_phy_addr(port);
332 return mv88e6xxx_phy_read(ds, addr, regnum);
336 mv88e6123_61_65_phy_write(struct dsa_switch *ds,
337 int port, int regnum, u16 val)
339 int addr = mv88e6123_61_65_port_to_phy_addr(port);
340 return mv88e6xxx_phy_write(ds, addr, regnum, val);
343 static struct mv88e6xxx_hw_stat mv88e6123_61_65_hw_stats[] = {
344 { "in_good_octets", 8, 0x00, },
345 { "in_bad_octets", 4, 0x02, },
346 { "in_unicast", 4, 0x04, },
347 { "in_broadcasts", 4, 0x06, },
348 { "in_multicasts", 4, 0x07, },
349 { "in_pause", 4, 0x16, },
350 { "in_undersize", 4, 0x18, },
351 { "in_fragments", 4, 0x19, },
352 { "in_oversize", 4, 0x1a, },
353 { "in_jabber", 4, 0x1b, },
354 { "in_rx_error", 4, 0x1c, },
355 { "in_fcs_error", 4, 0x1d, },
356 { "out_octets", 8, 0x0e, },
357 { "out_unicast", 4, 0x10, },
358 { "out_broadcasts", 4, 0x13, },
359 { "out_multicasts", 4, 0x12, },
360 { "out_pause", 4, 0x15, },
361 { "excessive", 4, 0x11, },
362 { "collisions", 4, 0x1e, },
363 { "deferred", 4, 0x05, },
364 { "single", 4, 0x14, },
365 { "multiple", 4, 0x17, },
366 { "out_fcs_error", 4, 0x03, },
367 { "late", 4, 0x1f, },
368 { "hist_64bytes", 4, 0x08, },
369 { "hist_65_127bytes", 4, 0x09, },
370 { "hist_128_255bytes", 4, 0x0a, },
371 { "hist_256_511bytes", 4, 0x0b, },
372 { "hist_512_1023bytes", 4, 0x0c, },
373 { "hist_1024_max_bytes", 4, 0x0d, },
377 mv88e6123_61_65_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
379 mv88e6xxx_get_strings(ds, ARRAY_SIZE(mv88e6123_61_65_hw_stats),
380 mv88e6123_61_65_hw_stats, port, data);
384 mv88e6123_61_65_get_ethtool_stats(struct dsa_switch *ds,
385 int port, uint64_t *data)
387 mv88e6xxx_get_ethtool_stats(ds, ARRAY_SIZE(mv88e6123_61_65_hw_stats),
388 mv88e6123_61_65_hw_stats, port, data);
391 static int mv88e6123_61_65_get_sset_count(struct dsa_switch *ds)
393 return ARRAY_SIZE(mv88e6123_61_65_hw_stats);
396 static struct dsa_switch_driver mv88e6123_61_65_switch_driver = {
397 .tag_protocol = cpu_to_be16(ETH_P_EDSA),
398 .priv_size = sizeof(struct mv88e6xxx_priv_state),
399 .probe = mv88e6123_61_65_probe,
400 .setup = mv88e6123_61_65_setup,
401 .set_addr = mv88e6xxx_set_addr_indirect,
402 .phy_read = mv88e6123_61_65_phy_read,
403 .phy_write = mv88e6123_61_65_phy_write,
404 .poll_link = mv88e6xxx_poll_link,
405 .get_strings = mv88e6123_61_65_get_strings,
406 .get_ethtool_stats = mv88e6123_61_65_get_ethtool_stats,
407 .get_sset_count = mv88e6123_61_65_get_sset_count,
410 static int __init mv88e6123_61_65_init(void)
412 register_switch_driver(&mv88e6123_61_65_switch_driver);
415 module_init(mv88e6123_61_65_init);
417 static void __exit mv88e6123_61_65_cleanup(void)
419 unregister_switch_driver(&mv88e6123_61_65_switch_driver);
421 module_exit(mv88e6123_61_65_cleanup);