[deliverable/linux.git] / drivers / net / dsa / mv88e6171.c

/* net/dsa/mv88e6171.c - Marvell 88e6171 switch chip support
 * Copyright (c) 2008-2009 Marvell Semiconductor
 * Copyright (c) 2014 Claudio Leite <leitec@staticky.com>
 *
 * 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/delay.h>
#include <linux/jiffies.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/phy.h>
#include <net/dsa.h>
#include "mv88e6xxx.h"

static char *mv88e6171_probe(struct device *host_dev, int sw_addr)
{
	struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
	int ret;

	if (bus == NULL)
		return NULL;

	ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
	if (ret >= 0) {
		if ((ret & 0xfff0) == PORT_SWITCH_ID_6171)
			return "Marvell 88E6171";
	}

	return NULL;
}

static int mv88e6171_setup_global(struct dsa_switch *ds)
{
	u32 upstream_port = dsa_upstream_port(ds);
	int ret;
	u32 reg;

	ret = mv88e6xxx_setup_global(ds);
	if (ret)
		return ret;

	/* Discard packets with excessive collisions, mask all
	 * interrupt sources, enable PPU.
	 */
	REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL,
		  GLOBAL_CONTROL_PPU_ENABLE | GLOBAL_CONTROL_DISCARD_EXCESS);

	/* Configure the upstream port, and configure the upstream
	 * port as the port to which ingress and egress monitor frames
	 * are to be sent.
	 */
	reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT |
		upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT |
		upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT |
		upstream_port << GLOBAL_MONITOR_CONTROL_MIRROR_SHIFT;
	REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);

	/* Disable remote management for now, and set the switch's
	 * DSA device number.
	 */
	REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2, ds->index & 0x1f);

	return 0;
}

static int mv88e6171_setup(struct dsa_switch *ds)
{
	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
	int ret;

	ret = mv88e6xxx_setup_common(ds);
	if (ret < 0)
		return ret;

	ps->num_ports = 7;

	ret = mv88e6xxx_switch_reset(ds, true);
	if (ret < 0)
		return ret;

	ret = mv88e6171_setup_global(ds);
	if (ret < 0)
		return ret;

	return mv88e6xxx_setup_ports(ds);
}

struct dsa_switch_driver mv88e6171_switch_driver = {
	.tag_protocol		= DSA_TAG_PROTO_EDSA,
	.priv_size		= sizeof(struct mv88e6xxx_priv_state),
	.probe			= mv88e6171_probe,
	.setup			= mv88e6171_setup,
	.set_addr		= mv88e6xxx_set_addr_indirect,
	.phy_read		= mv88e6xxx_phy_read_indirect,
	.phy_write		= mv88e6xxx_phy_write_indirect,
	.poll_link		= mv88e6xxx_poll_link,
	.get_strings		= mv88e6xxx_get_strings,
	.get_ethtool_stats	= mv88e6xxx_get_ethtool_stats,
	.get_sset_count		= mv88e6xxx_get_sset_count,
#ifdef CONFIG_NET_DSA_HWMON
	.get_temp               = mv88e6xxx_get_temp,
#endif
	.get_regs_len		= mv88e6xxx_get_regs_len,
	.get_regs		= mv88e6xxx_get_regs,
	.port_join_bridge       = mv88e6xxx_join_bridge,
	.port_leave_bridge      = mv88e6xxx_leave_bridge,
	.port_stp_update        = mv88e6xxx_port_stp_update,
	.fdb_add		= mv88e6xxx_port_fdb_add,
	.fdb_del		= mv88e6xxx_port_fdb_del,
	.fdb_getnext		= mv88e6xxx_port_fdb_getnext,
};

MODULE_ALIAS("platform:mv88e6171");
Commit	Line	Data
1636d883	1	/* net/dsa/mv88e6171.c - Marvell 88e6171 switch chip support
42f27253 AL	2	* Copyright (c) 2008-2009 Marvell Semiconductor
	3	* Copyright (c) 2014 Claudio Leite <leitec@staticky.com>
	4	*
	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.
	9	*/
	10
	11	#include <linux/delay.h>
	12	#include <linux/jiffies.h>
	13	#include <linux/list.h>
	14	#include <linux/module.h>
	15	#include <linux/netdevice.h>
	16	#include <linux/phy.h>
	17	#include <net/dsa.h>
	18	#include "mv88e6xxx.h"
	19
b4d2394d	20	static char mv88e6171_probe(struct device host_dev, int sw_addr)
42f27253	21	{
b4d2394d	22	struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
42f27253 AL	23	int ret;
42f27253 AL	24
b4d2394d AD	25	if (bus == NULL)
	26	return NULL;
	27
cca8b133	28	ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
42f27253	29	if (ret >= 0) {
cca8b133	30	if ((ret & 0xfff0) == PORT_SWITCH_ID_6171)
42f27253 AL	31	return "Marvell 88E6171";
	32	}
	33
	34	return NULL;
	35	}
	36
42f27253 AL	37	static int mv88e6171_setup_global(struct dsa_switch *ds)
42f27253 AL	38	{
15966a2a	39	u32 upstream_port = dsa_upstream_port(ds);
42f27253	40	int ret;
1636d883	41	u32 reg;
54d792f2 AL	42
	43	ret = mv88e6xxx_setup_global(ds);
	44	if (ret)
	45	return ret;
42f27253	46
4c732668 AL	47	/* Discard packets with excessive collisions, mask all
4c732668 AL	48	* interrupt sources, enable PPU.
42f27253	49	*/
15966a2a AL	50	REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL,
15966a2a AL	51	GLOBAL_CONTROL_PPU_ENABLE \| GLOBAL_CONTROL_DISCARD_EXCESS);
42f27253	52
42f27253 AL	53	/* Configure the upstream port, and configure the upstream
	54	* port as the port to which ingress and egress monitor frames
	55	* are to be sent.
	56	*/
1636d883 AL	57	reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT \|
	58	upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT \|
	59	upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT \|
	60	upstream_port << GLOBAL_MONITOR_CONTROL_MIRROR_SHIFT;
	61	REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
42f27253 AL	62
	63	/* Disable remote management for now, and set the switch's
	64	* DSA device number.
	65	*/
15966a2a	66	REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2, ds->index & 0x1f);
42f27253	67
42f27253 AL	68	return 0;
	69	}
	70
42f27253 AL	71	static int mv88e6171_setup(struct dsa_switch *ds)
42f27253 AL	72	{
44e50ddb	73	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
42f27253 AL	74	int ret;
42f27253 AL	75
acdaffcc GR	76	ret = mv88e6xxx_setup_common(ds);
	77	if (ret < 0)
	78	return ret;
42f27253	79
44e50ddb AL	80	ps->num_ports = 7;
44e50ddb AL	81
143a8307	82	ret = mv88e6xxx_switch_reset(ds, true);
42f27253 AL	83	if (ret < 0)
	84	return ret;
	85
42f27253 AL	86	ret = mv88e6171_setup_global(ds);
	87	if (ret < 0)
	88	return ret;
	89
dbde9e66	90	return mv88e6xxx_setup_ports(ds);
42f27253 AL	91	}
42f27253 AL	92
42f27253	93	struct dsa_switch_driver mv88e6171_switch_driver = {
c146b778	94	.tag_protocol = DSA_TAG_PROTO_EDSA,
42f27253 AL	95	.priv_size = sizeof(struct mv88e6xxx_priv_state),
	96	.probe = mv88e6171_probe,
	97	.setup = mv88e6171_setup,
	98	.set_addr = mv88e6xxx_set_addr_indirect,
fd3a0ee4 AL	99	.phy_read = mv88e6xxx_phy_read_indirect,
fd3a0ee4 AL	100	.phy_write = mv88e6xxx_phy_write_indirect,
42f27253	101	.poll_link = mv88e6xxx_poll_link,
e413e7e1 AL	102	.get_strings = mv88e6xxx_get_strings,
	103	.get_ethtool_stats = mv88e6xxx_get_ethtool_stats,
	104	.get_sset_count = mv88e6xxx_get_sset_count,
4dd38cdb AL	105	#ifdef CONFIG_NET_DSA_HWMON
	106	.get_temp = mv88e6xxx_get_temp,
	107	#endif
03d6faa9 AL	108	.get_regs_len = mv88e6xxx_get_regs_len,
03d6faa9 AL	109	.get_regs = mv88e6xxx_get_regs,
b2a6b93a AL	110	.port_join_bridge = mv88e6xxx_join_bridge,
	111	.port_leave_bridge = mv88e6xxx_leave_bridge,
	112	.port_stp_update = mv88e6xxx_port_stp_update,
	113	.fdb_add = mv88e6xxx_port_fdb_add,
	114	.fdb_del = mv88e6xxx_port_fdb_del,
	115	.fdb_getnext = mv88e6xxx_port_fdb_getnext,
42f27253 AL	116	};
	117
	118	MODULE_ALIAS("platform:mv88e6171");