net/dsa/mv88e6131.c - pub/scm/linux/kernel/git/horms/ipvs-next - Git at Google

 /*
  * net/dsa/mv88e6131.c - Marvell 88e6095/6095f/6131 switch chip support
  * Copyright (c) 2008-2009 Marvell Semiconductor
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  */

 #include <linux/list.h>
 #include <linux/netdevice.h>
 #include <linux/phy.h>
 #include "dsa_priv.h"
 #include "mv88e6xxx.h"

 /*
  * Switch product IDs
  */
 #define ID_6085		0x04a0
 #define ID_6095		0x0950
 #define ID_6131		0x1060

 static char *mv88e6131_probe(struct mii_bus *bus, int sw_addr)
 {
 	int ret;

 	ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), 0x03);
 	if (ret >= 0) {
 		ret &= 0xfff0;
 		if (ret == ID_6085)
 			return "Marvell 88E6085";
 		if (ret == ID_6095)
 			return "Marvell 88E6095/88E6095F";
 		if (ret == ID_6131)
 			return "Marvell 88E6131";
 	}

 	return NULL;
 }

 static int mv88e6131_switch_reset(struct dsa_switch *ds)
 {
 	int i;
 	int ret;

 	/*
 	 * Set all ports to the disabled state.
 	 */
 	for (i = 0; i < 11; i++) {
 		ret = REG_READ(REG_PORT(i), 0x04);
 		REG_WRITE(REG_PORT(i), 0x04, ret & 0xfffc);
 	}

 	/*
 	 * Wait for transmit queues to drain.
 	 */
 	msleep(2);

 	/*
 	 * Reset the switch.
 	 */
 	REG_WRITE(REG_GLOBAL, 0x04, 0xc400);

 	/*
 	 * Wait up to one second for reset to complete.
 	 */
 	for (i = 0; i < 1000; i++) {
 		ret = REG_READ(REG_GLOBAL, 0x00);
 		if ((ret & 0xc800) == 0xc800)
 			break;

 		msleep(1);
 	}
 	if (i == 1000)
 		return -ETIMEDOUT;

 	return 0;
 }

 static int mv88e6131_setup_global(struct dsa_switch *ds)
 {
 	int ret;
 	int i;

 	/*
 	 * Enable the PHY polling unit, don't discard packets with
 	 * excessive collisions, use a weighted fair queueing scheme
 	 * to arbitrate between packet queues, set the maximum frame
 	 * size to 1632, and mask all interrupt sources.
 	 */
 	REG_WRITE(REG_GLOBAL, 0x04, 0x4400);

 	/*
 	 * Set the default address aging time to 5 minutes, and
 	 * enable address learn messages to be sent to all message
 	 * ports.
 	 */
 	REG_WRITE(REG_GLOBAL, 0x0a, 0x0148);

 	/*
 	 * Configure the priority mapping registers.
 	 */
 	ret = mv88e6xxx_config_prio(ds);
 	if (ret < 0)
 		return ret;

 	/*
 	 * Set the VLAN ethertype to 0x8100.
 	 */
 	REG_WRITE(REG_GLOBAL, 0x19, 0x8100);

 	/*
 	 * Disable ARP mirroring, and configure the upstream port as
 	 * the port to which ingress and egress monitor frames are to
 	 * be sent.
 	 */
 	REG_WRITE(REG_GLOBAL, 0x1a, (dsa_upstream_port(ds) * 0x1100) | 0x00f0);

 	/*
 	 * Disable cascade port functionality unless this device
 	 * is used in a cascade configuration, and set the switch's
 	 * DSA device number.
 	 */
 	if (ds->dst->pd->nr_chips > 1)
 		REG_WRITE(REG_GLOBAL, 0x1c, 0xf000 | (ds->index & 0x1f));
 	else
 		REG_WRITE(REG_GLOBAL, 0x1c, 0xe000 | (ds->index & 0x1f));

 	/*
 	 * Send all frames with destination addresses matching
 	 * 01:80:c2:00:00:0x to the CPU port.
 	 */
 	REG_WRITE(REG_GLOBAL2, 0x03, 0xffff);

 	/*
 	 * Ignore removed tag data on doubly tagged packets, disable
 	 * flow control messages, force flow control priority to the
 	 * highest, and send all special multicast frames to the CPU
 	 * port at the highest priority.
 	 */
 	REG_WRITE(REG_GLOBAL2, 0x05, 0x00ff);

 	/*
 	 * Program the DSA routing table.
 	 */
 	for (i = 0; i < 32; i++) {
 		int nexthop;

 		nexthop = 0x1f;
 		if (i != ds->index && i < ds->dst->pd->nr_chips)
 			nexthop = ds->pd->rtable[i] & 0x1f;

 		REG_WRITE(REG_GLOBAL2, 0x06, 0x8000 | (i << 8) | nexthop);
 	}

 	/*
 	 * Clear all trunk masks.
 	 */
 	for (i = 0; i < 8; i++)
 		REG_WRITE(REG_GLOBAL2, 0x07, 0x8000 | (i << 12) | 0x7ff);

 	/*
 	 * Clear all trunk mappings.
 	 */
 	for (i = 0; i < 16; i++)
 		REG_WRITE(REG_GLOBAL2, 0x08, 0x8000 | (i << 11));

 	/*
 	 * Force the priority of IGMP/MLD snoop frames and ARP frames
 	 * to the highest setting.
 	 */
 	REG_WRITE(REG_GLOBAL2, 0x0f, 0x00ff);

 	return 0;
 }

 static int mv88e6131_setup_port(struct dsa_switch *ds, int p)
 {
 	struct mv88e6xxx_priv_state *ps = (void *)(ds + 1);
 	int addr = REG_PORT(p);
 	u16 val;

 	/*
 	 * MAC Forcing register: don't force link, speed, duplex
 	 * or flow control state to any particular values on physical
 	 * ports, but force the CPU port and all DSA ports to 1000 Mb/s
 	 * (100 Mb/s on 6085) full duplex.
 	 */
 	if (dsa_is_cpu_port(ds, p) || ds->dsa_port_mask & (1 << p))
 		if (ps->id == ID_6085)
 			REG_WRITE(addr, 0x01, 0x003d); /* 100 Mb/s */
 		else
 			REG_WRITE(addr, 0x01, 0x003e); /* 1000 Mb/s */
 	else
 		REG_WRITE(addr, 0x01, 0x0003);

 	/*
 	 * Port Control: disable Core Tag, disable Drop-on-Lock,
 	 * transmit frames unmodified, disable Header mode,
 	 * enable IGMP/MLD snoop, disable DoubleTag, disable VLAN
 	 * tunneling, determine priority by looking at 802.1p and
 	 * IP priority fields (IP prio has precedence), and set STP
 	 * state to Forwarding.
 	 *
 	 * If this is the upstream port for this switch, enable
 	 * forwarding of unknown unicasts, and enable DSA tagging
 	 * mode.
 	 *
 	 * If this is the link to another switch, use DSA tagging
 	 * mode, but do not enable forwarding of unknown unicasts.
 	 */
 	val = 0x0433;
 	if (p == dsa_upstream_port(ds)) {
 		val |= 0x0104;
 		/*
 		 * On 6085, unknown multicast forward is controlled
 		 * here rather than in Port Control 2 register.
 		 */
 		if (ps->id == ID_6085)
 			val |= 0x0008;
 	}
 	if (ds->dsa_port_mask & (1 << p))
 		val |= 0x0100;
 	REG_WRITE(addr, 0x04, val);

 	/*
 	 * Port Control 1: disable trunking.  Also, if this is the
 	 * CPU port, enable learn messages to be sent to this port.
 	 */
 	REG_WRITE(addr, 0x05, dsa_is_cpu_port(ds, p) ? 0x8000 : 0x0000);

 	/*
 	 * Port based VLAN map: give each port its own address
 	 * database, allow the CPU port to talk to each of the 'real'
 	 * ports, and allow each of the 'real' ports to only talk to
 	 * the upstream port.
 	 */
 	val = (p & 0xf) << 12;
 	if (dsa_is_cpu_port(ds, p))
 		val |= ds->phys_port_mask;
 	else
 		val |= 1 << dsa_upstream_port(ds);
 	REG_WRITE(addr, 0x06, val);

 	/*
 	 * Default VLAN ID and priority: don't set a default VLAN
 	 * ID, and set the default packet priority to zero.
 	 */
 	REG_WRITE(addr, 0x07, 0x0000);

 	/*
 	 * Port Control 2: don't force a good FCS, don't use
 	 * VLAN-based, source address-based or destination
 	 * address-based priority overrides, don't let the switch
 	 * add or strip 802.1q tags, don't discard tagged or
 	 * untagged frames on this port, do a destination address
 	 * lookup on received packets as usual, don't send a copy
 	 * of all transmitted/received frames on this port to the
 	 * CPU, and configure the upstream port number.
 	 *
 	 * If this is the upstream port for this switch, enable
 	 * forwarding of unknown multicast addresses.
 	 */
 	if (ps->id == ID_6085)
 		/*
 		 * on 6085, bits 3:0 are reserved, bit 6 control ARP
 		 * mirroring, and multicast forward is handled in
 		 * Port Control register.
 		 */
 		REG_WRITE(addr, 0x08, 0x0080);
 	else {
 		val = 0x0080 | dsa_upstream_port(ds);
 		if (p == dsa_upstream_port(ds))
 			val |= 0x0040;
 		REG_WRITE(addr, 0x08, val);
 	}

 	/*
 	 * Rate Control: disable ingress rate limiting.
 	 */
 	REG_WRITE(addr, 0x09, 0x0000);

 	/*
 	 * Rate Control 2: disable egress rate limiting.
 	 */
 	REG_WRITE(addr, 0x0a, 0x0000);

 	/*
 	 * Port Association Vector: when learning source addresses
 	 * of packets, add the address to the address database using
 	 * a port bitmap that has only the bit for this port set and
 	 * the other bits clear.
 	 */
 	REG_WRITE(addr, 0x0b, 1 << p);

 	/*
 	 * Tag Remap: use an identity 802.1p prio -> switch prio
 	 * mapping.
 	 */
 	REG_WRITE(addr, 0x18, 0x3210);

 	/*
 	 * Tag Remap 2: use an identity 802.1p prio -> switch prio
 	 * mapping.
 	 */
 	REG_WRITE(addr, 0x19, 0x7654);

 	return 0;
 }

 static int mv88e6131_setup(struct dsa_switch *ds)
 {
 	struct mv88e6xxx_priv_state *ps = (void *)(ds + 1);
 	int i;
 	int ret;

 	mutex_init(&ps->smi_mutex);
 	mv88e6xxx_ppu_state_init(ds);
 	mutex_init(&ps->stats_mutex);

 	ps->id = REG_READ(REG_PORT(0), 0x03) & 0xfff0;

 	ret = mv88e6131_switch_reset(ds);
 	if (ret < 0)
 		return ret;

 	/* @@@ initialise vtu and atu */

 	ret = mv88e6131_setup_global(ds);
 	if (ret < 0)
 		return ret;

 	for (i = 0; i < 11; i++) {
 		ret = mv88e6131_setup_port(ds, i);
 		if (ret < 0)
 			return ret;
 	}

 	return 0;
 }

 static int mv88e6131_port_to_phy_addr(int port)
 {
 	if (port >= 0 && port <= 11)
 		return port;
 	return -1;
 }

 static int
 mv88e6131_phy_read(struct dsa_switch *ds, int port, int regnum)
 {
 	int addr = mv88e6131_port_to_phy_addr(port);
 	return mv88e6xxx_phy_read_ppu(ds, addr, regnum);
 }

 static int
 mv88e6131_phy_write(struct dsa_switch *ds,
 			      int port, int regnum, u16 val)
 {
 	int addr = mv88e6131_port_to_phy_addr(port);
 	return mv88e6xxx_phy_write_ppu(ds, addr, regnum, val);
 }

 static struct mv88e6xxx_hw_stat mv88e6131_hw_stats[] = {
 	{ "in_good_octets", 8, 0x00, },
 	{ "in_bad_octets", 4, 0x02, },
 	{ "in_unicast", 4, 0x04, },
 	{ "in_broadcasts", 4, 0x06, },
 	{ "in_multicasts", 4, 0x07, },
 	{ "in_pause", 4, 0x16, },
 	{ "in_undersize", 4, 0x18, },
 	{ "in_fragments", 4, 0x19, },
 	{ "in_oversize", 4, 0x1a, },
 	{ "in_jabber", 4, 0x1b, },
 	{ "in_rx_error", 4, 0x1c, },
 	{ "in_fcs_error", 4, 0x1d, },
 	{ "out_octets", 8, 0x0e, },
 	{ "out_unicast", 4, 0x10, },
 	{ "out_broadcasts", 4, 0x13, },
 	{ "out_multicasts", 4, 0x12, },
 	{ "out_pause", 4, 0x15, },
 	{ "excessive", 4, 0x11, },
 	{ "collisions", 4, 0x1e, },
 	{ "deferred", 4, 0x05, },
 	{ "single", 4, 0x14, },
 	{ "multiple", 4, 0x17, },
 	{ "out_fcs_error", 4, 0x03, },
 	{ "late", 4, 0x1f, },
 	{ "hist_64bytes", 4, 0x08, },
 	{ "hist_65_127bytes", 4, 0x09, },
 	{ "hist_128_255bytes", 4, 0x0a, },
 	{ "hist_256_511bytes", 4, 0x0b, },
 	{ "hist_512_1023bytes", 4, 0x0c, },
 	{ "hist_1024_max_bytes", 4, 0x0d, },
 };

 static void
 mv88e6131_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
 {
 	mv88e6xxx_get_strings(ds, ARRAY_SIZE(mv88e6131_hw_stats),
 			      mv88e6131_hw_stats, port, data);
 }

 static void
 mv88e6131_get_ethtool_stats(struct dsa_switch *ds,
 				  int port, uint64_t *data)
 {
 	mv88e6xxx_get_ethtool_stats(ds, ARRAY_SIZE(mv88e6131_hw_stats),
 				    mv88e6131_hw_stats, port, data);
 }

 static int mv88e6131_get_sset_count(struct dsa_switch *ds)
 {
 	return ARRAY_SIZE(mv88e6131_hw_stats);
 }

 static struct dsa_switch_driver mv88e6131_switch_driver = {
 	.tag_protocol		= cpu_to_be16(ETH_P_DSA),
 	.priv_size		= sizeof(struct mv88e6xxx_priv_state),
 	.probe			= mv88e6131_probe,
 	.setup			= mv88e6131_setup,
 	.set_addr		= mv88e6xxx_set_addr_direct,
 	.phy_read		= mv88e6131_phy_read,
 	.phy_write		= mv88e6131_phy_write,
 	.poll_link		= mv88e6xxx_poll_link,
 	.get_strings		= mv88e6131_get_strings,
 	.get_ethtool_stats	= mv88e6131_get_ethtool_stats,
 	.get_sset_count		= mv88e6131_get_sset_count,
 };

 static int __init mv88e6131_init(void)
 {
 	register_switch_driver(&mv88e6131_switch_driver);
 	return 0;
 }
 module_init(mv88e6131_init);

 static void __exit mv88e6131_cleanup(void)
 {
 	unregister_switch_driver(&mv88e6131_switch_driver);
 }
 module_exit(mv88e6131_cleanup);
	/*
	* net/dsa/mv88e6131.c - Marvell 88e6095/6095f/6131 switch chip support
	* Copyright (c) 2008-2009 Marvell Semiconductor
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*/

	#include <linux/list.h>
	#include <linux/netdevice.h>
	#include <linux/phy.h>
	#include "dsa_priv.h"
	#include "mv88e6xxx.h"

	/*
	* Switch product IDs
	*/
	#define ID_6085 0x04a0
	#define ID_6095 0x0950
	#define ID_6131 0x1060

	static char mv88e6131_probe(struct mii_bus bus, int sw_addr)
	{
	int ret;

	ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), 0x03);
	if (ret >= 0) {
	ret &= 0xfff0;
	if (ret == ID_6085)
	return "Marvell 88E6085";
	if (ret == ID_6095)
	return "Marvell 88E6095/88E6095F";
	if (ret == ID_6131)
	return "Marvell 88E6131";
	}

	return NULL;
	}

	static int mv88e6131_switch_reset(struct dsa_switch *ds)
	{
	int i;
	int ret;

	/*
	* Set all ports to the disabled state.
	*/
	for (i = 0; i < 11; i++) {
	ret = REG_READ(REG_PORT(i), 0x04);
	REG_WRITE(REG_PORT(i), 0x04, ret & 0xfffc);
	}

	/*
	* Wait for transmit queues to drain.
	*/
	msleep(2);

	/*
	* Reset the switch.
	*/
	REG_WRITE(REG_GLOBAL, 0x04, 0xc400);

	/*
	* Wait up to one second for reset to complete.
	*/
	for (i = 0; i < 1000; i++) {
	ret = REG_READ(REG_GLOBAL, 0x00);
	if ((ret & 0xc800) == 0xc800)
	break;

	msleep(1);
	}
	if (i == 1000)
	return -ETIMEDOUT;

	return 0;
	}

	static int mv88e6131_setup_global(struct dsa_switch *ds)
	{
	int ret;
	int i;

	/*
	* Enable the PHY polling unit, don't discard packets with
	* excessive collisions, use a weighted fair queueing scheme
	* to arbitrate between packet queues, set the maximum frame
	* size to 1632, and mask all interrupt sources.
	*/
	REG_WRITE(REG_GLOBAL, 0x04, 0x4400);

	/*
	* Set the default address aging time to 5 minutes, and
	* enable address learn messages to be sent to all message
	* ports.
	*/
	REG_WRITE(REG_GLOBAL, 0x0a, 0x0148);

	/*
	* Configure the priority mapping registers.
	*/
	ret = mv88e6xxx_config_prio(ds);
	if (ret < 0)
	return ret;

	/*
	* Set the VLAN ethertype to 0x8100.
	*/
	REG_WRITE(REG_GLOBAL, 0x19, 0x8100);

	/*
	* Disable ARP mirroring, and configure the upstream port as
	* the port to which ingress and egress monitor frames are to
	* be sent.
	*/
	REG_WRITE(REG_GLOBAL, 0x1a, (dsa_upstream_port(ds) * 0x1100) \| 0x00f0);

	/*
	* Disable cascade port functionality unless this device
	* is used in a cascade configuration, and set the switch's
	* DSA device number.
	*/
	if (ds->dst->pd->nr_chips > 1)
	REG_WRITE(REG_GLOBAL, 0x1c, 0xf000 \| (ds->index & 0x1f));
	else
	REG_WRITE(REG_GLOBAL, 0x1c, 0xe000 \| (ds->index & 0x1f));

	/*
	* Send all frames with destination addresses matching
	* 01:80:c2:00:00:0x to the CPU port.
	*/
	REG_WRITE(REG_GLOBAL2, 0x03, 0xffff);

	/*
	* Ignore removed tag data on doubly tagged packets, disable
	* flow control messages, force flow control priority to the
	* highest, and send all special multicast frames to the CPU
	* port at the highest priority.
	*/
	REG_WRITE(REG_GLOBAL2, 0x05, 0x00ff);

	/*
	* Program the DSA routing table.
	*/
	for (i = 0; i < 32; i++) {
	int nexthop;

	nexthop = 0x1f;
	if (i != ds->index && i < ds->dst->pd->nr_chips)
	nexthop = ds->pd->rtable[i] & 0x1f;

	REG_WRITE(REG_GLOBAL2, 0x06, 0x8000 \| (i << 8) \| nexthop);
	}

	/*
	* Clear all trunk masks.
	*/
	for (i = 0; i < 8; i++)
	REG_WRITE(REG_GLOBAL2, 0x07, 0x8000 \| (i << 12) \| 0x7ff);

	/*
	* Clear all trunk mappings.
	*/
	for (i = 0; i < 16; i++)
	REG_WRITE(REG_GLOBAL2, 0x08, 0x8000 \| (i << 11));

	/*
	* Force the priority of IGMP/MLD snoop frames and ARP frames
	* to the highest setting.
	*/
	REG_WRITE(REG_GLOBAL2, 0x0f, 0x00ff);

	return 0;
	}

	static int mv88e6131_setup_port(struct dsa_switch *ds, int p)
	{
	struct mv88e6xxx_priv_state ps = (void )(ds + 1);
	int addr = REG_PORT(p);
	u16 val;

	/*
	* MAC Forcing register: don't force link, speed, duplex
	* or flow control state to any particular values on physical
	* ports, but force the CPU port and all DSA ports to 1000 Mb/s
	* (100 Mb/s on 6085) full duplex.
	*/
	if (dsa_is_cpu_port(ds, p) \|\| ds->dsa_port_mask & (1 << p))
	if (ps->id == ID_6085)
	REG_WRITE(addr, 0x01, 0x003d); /* 100 Mb/s */
	else
	REG_WRITE(addr, 0x01, 0x003e); /* 1000 Mb/s */
	else
	REG_WRITE(addr, 0x01, 0x0003);

	/*
	* Port Control: disable Core Tag, disable Drop-on-Lock,
	* transmit frames unmodified, disable Header mode,
	* enable IGMP/MLD snoop, disable DoubleTag, disable VLAN
	* tunneling, determine priority by looking at 802.1p and
	* IP priority fields (IP prio has precedence), and set STP
	* state to Forwarding.
	*
	* If this is the upstream port for this switch, enable
	* forwarding of unknown unicasts, and enable DSA tagging
	* mode.
	*
	* If this is the link to another switch, use DSA tagging
	* mode, but do not enable forwarding of unknown unicasts.
	*/
	val = 0x0433;
	if (p == dsa_upstream_port(ds)) {
	val \|= 0x0104;
	/*
	* On 6085, unknown multicast forward is controlled
	* here rather than in Port Control 2 register.
	*/
	if (ps->id == ID_6085)
	val \|= 0x0008;
	}
	if (ds->dsa_port_mask & (1 << p))
	val \|= 0x0100;
	REG_WRITE(addr, 0x04, val);

	/*
	* Port Control 1: disable trunking. Also, if this is the
	* CPU port, enable learn messages to be sent to this port.
	*/
	REG_WRITE(addr, 0x05, dsa_is_cpu_port(ds, p) ? 0x8000 : 0x0000);

	/*
	* Port based VLAN map: give each port its own address
	* database, allow the CPU port to talk to each of the 'real'
	* ports, and allow each of the 'real' ports to only talk to
	* the upstream port.
	*/
	val = (p & 0xf) << 12;
	if (dsa_is_cpu_port(ds, p))
	val \|= ds->phys_port_mask;
	else
	val \|= 1 << dsa_upstream_port(ds);
	REG_WRITE(addr, 0x06, val);

	/*
	* Default VLAN ID and priority: don't set a default VLAN
	* ID, and set the default packet priority to zero.
	*/
	REG_WRITE(addr, 0x07, 0x0000);

	/*
	* Port Control 2: don't force a good FCS, don't use
	* VLAN-based, source address-based or destination
	* address-based priority overrides, don't let the switch
	* add or strip 802.1q tags, don't discard tagged or
	* untagged frames on this port, do a destination address
	* lookup on received packets as usual, don't send a copy
	* of all transmitted/received frames on this port to the
	* CPU, and configure the upstream port number.
	*
	* If this is the upstream port for this switch, enable
	* forwarding of unknown multicast addresses.
	*/
	if (ps->id == ID_6085)
	/*
	* on 6085, bits 3:0 are reserved, bit 6 control ARP
	* mirroring, and multicast forward is handled in
	* Port Control register.
	*/
	REG_WRITE(addr, 0x08, 0x0080);
	else {
	val = 0x0080 \| dsa_upstream_port(ds);
	if (p == dsa_upstream_port(ds))
	val \|= 0x0040;
	REG_WRITE(addr, 0x08, val);
	}

	/*
	* Rate Control: disable ingress rate limiting.
	*/
	REG_WRITE(addr, 0x09, 0x0000);

	/*
	* Rate Control 2: disable egress rate limiting.
	*/
	REG_WRITE(addr, 0x0a, 0x0000);

	/*
	* Port Association Vector: when learning source addresses
	* of packets, add the address to the address database using
	* a port bitmap that has only the bit for this port set and
	* the other bits clear.
	*/
	REG_WRITE(addr, 0x0b, 1 << p);

	/*
	* Tag Remap: use an identity 802.1p prio -> switch prio
	* mapping.
	*/
	REG_WRITE(addr, 0x18, 0x3210);

	/*
	* Tag Remap 2: use an identity 802.1p prio -> switch prio
	* mapping.
	*/
	REG_WRITE(addr, 0x19, 0x7654);

	return 0;
	}

	static int mv88e6131_setup(struct dsa_switch *ds)
	{
	struct mv88e6xxx_priv_state ps = (void )(ds + 1);
	int i;
	int ret;

	mutex_init(&ps->smi_mutex);
	mv88e6xxx_ppu_state_init(ds);
	mutex_init(&ps->stats_mutex);

	ps->id = REG_READ(REG_PORT(0), 0x03) & 0xfff0;

	ret = mv88e6131_switch_reset(ds);
	if (ret < 0)
	return ret;

	/* @@@ initialise vtu and atu */

	ret = mv88e6131_setup_global(ds);
	if (ret < 0)
	return ret;

	for (i = 0; i < 11; i++) {
	ret = mv88e6131_setup_port(ds, i);
	if (ret < 0)
	return ret;
	}

	return 0;
	}

	static int mv88e6131_port_to_phy_addr(int port)
	{
	if (port >= 0 && port <= 11)
	return port;
	return -1;
	}

	static int
	mv88e6131_phy_read(struct dsa_switch *ds, int port, int regnum)
	{
	int addr = mv88e6131_port_to_phy_addr(port);
	return mv88e6xxx_phy_read_ppu(ds, addr, regnum);
	}

	static int
	mv88e6131_phy_write(struct dsa_switch *ds,
	int port, int regnum, u16 val)
	{
	int addr = mv88e6131_port_to_phy_addr(port);
	return mv88e6xxx_phy_write_ppu(ds, addr, regnum, val);
	}

	static struct mv88e6xxx_hw_stat mv88e6131_hw_stats[] = {
	{ "in_good_octets", 8, 0x00, },
	{ "in_bad_octets", 4, 0x02, },
	{ "in_unicast", 4, 0x04, },
	{ "in_broadcasts", 4, 0x06, },
	{ "in_multicasts", 4, 0x07, },
	{ "in_pause", 4, 0x16, },
	{ "in_undersize", 4, 0x18, },
	{ "in_fragments", 4, 0x19, },
	{ "in_oversize", 4, 0x1a, },
	{ "in_jabber", 4, 0x1b, },
	{ "in_rx_error", 4, 0x1c, },
	{ "in_fcs_error", 4, 0x1d, },
	{ "out_octets", 8, 0x0e, },
	{ "out_unicast", 4, 0x10, },
	{ "out_broadcasts", 4, 0x13, },
	{ "out_multicasts", 4, 0x12, },
	{ "out_pause", 4, 0x15, },
	{ "excessive", 4, 0x11, },
	{ "collisions", 4, 0x1e, },
	{ "deferred", 4, 0x05, },
	{ "single", 4, 0x14, },
	{ "multiple", 4, 0x17, },
	{ "out_fcs_error", 4, 0x03, },
	{ "late", 4, 0x1f, },
	{ "hist_64bytes", 4, 0x08, },
	{ "hist_65_127bytes", 4, 0x09, },
	{ "hist_128_255bytes", 4, 0x0a, },
	{ "hist_256_511bytes", 4, 0x0b, },
	{ "hist_512_1023bytes", 4, 0x0c, },
	{ "hist_1024_max_bytes", 4, 0x0d, },
	};

	static void
	mv88e6131_get_strings(struct dsa_switch ds, int port, uint8_t data)
	{
	mv88e6xxx_get_strings(ds, ARRAY_SIZE(mv88e6131_hw_stats),
	mv88e6131_hw_stats, port, data);
	}

	static void
	mv88e6131_get_ethtool_stats(struct dsa_switch *ds,
	int port, uint64_t *data)
	{
	mv88e6xxx_get_ethtool_stats(ds, ARRAY_SIZE(mv88e6131_hw_stats),
	mv88e6131_hw_stats, port, data);
	}

	static int mv88e6131_get_sset_count(struct dsa_switch *ds)
	{
	return ARRAY_SIZE(mv88e6131_hw_stats);
	}

	static struct dsa_switch_driver mv88e6131_switch_driver = {
	.tag_protocol = cpu_to_be16(ETH_P_DSA),
	.priv_size = sizeof(struct mv88e6xxx_priv_state),
	.probe = mv88e6131_probe,
	.setup = mv88e6131_setup,
	.set_addr = mv88e6xxx_set_addr_direct,
	.phy_read = mv88e6131_phy_read,
	.phy_write = mv88e6131_phy_write,
	.poll_link = mv88e6xxx_poll_link,
	.get_strings = mv88e6131_get_strings,
	.get_ethtool_stats = mv88e6131_get_ethtool_stats,
	.get_sset_count = mv88e6131_get_sset_count,
	};

	static int __init mv88e6131_init(void)
	{
	register_switch_driver(&mv88e6131_switch_driver);
	return 0;
	}
	module_init(mv88e6131_init);

	static void __exit mv88e6131_cleanup(void)
	{
	unregister_switch_driver(&mv88e6131_switch_driver);
	}
	module_exit(mv88e6131_cleanup);