tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* net/dsa/mv88e6171.c - Marvell 88e6171 switch chip support
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
20static char *mv88e6171_probe(struct device *host_dev, int sw_addr)
21{
22 struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
23 int ret;
24
25 if (bus == NULL)
26 return NULL;
27
28 ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
29 if (ret >= 0) {
30 if ((ret & 0xfff0) == PORT_SWITCH_ID_6171)
31 return "Marvell 88E6171";
32 if ((ret & 0xfff0) == PORT_SWITCH_ID_6175)
33 return "Marvell 88E6175";
34 if ((ret & 0xfff0) == PORT_SWITCH_ID_6350)
35 return "Marvell 88E6350";
36 if ((ret & 0xfff0) == PORT_SWITCH_ID_6351)
37 return "Marvell 88E6351";
38 }
39
40 return NULL;
41}
42
43static int mv88e6171_setup_global(struct dsa_switch *ds)
44{
45 u32 upstream_port = dsa_upstream_port(ds);
46 int ret;
47 u32 reg;
48
49 ret = mv88e6xxx_setup_global(ds);
50 if (ret)
51 return ret;
52
53 /* Discard packets with excessive collisions, mask all
54 * interrupt sources, enable PPU.
55 */
56 REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL,
57 GLOBAL_CONTROL_PPU_ENABLE | GLOBAL_CONTROL_DISCARD_EXCESS);
58
59 /* Configure the upstream port, and configure the upstream
60 * port as the port to which ingress and egress monitor frames
61 * are to be sent.
62 */
63 reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT |
64 upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT |
65 upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT |
66 upstream_port << GLOBAL_MONITOR_CONTROL_MIRROR_SHIFT;
67 REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
68
69 /* Disable remote management for now, and set the switch's
70 * DSA device number.
71 */
72 REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2, ds->index & 0x1f);
73
74 return 0;
75}
76
77static int mv88e6171_setup(struct dsa_switch *ds)
78{
79 struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
80 int ret;
81
82 ret = mv88e6xxx_setup_common(ds);
83 if (ret < 0)
84 return ret;
85
86 ps->num_ports = 7;
87
88 ret = mv88e6xxx_switch_reset(ds, true);
89 if (ret < 0)
90 return ret;
91
92 ret = mv88e6171_setup_global(ds);
93 if (ret < 0)
94 return ret;
95
96 return mv88e6xxx_setup_ports(ds);
97}
98
99struct dsa_switch_driver mv88e6171_switch_driver = {
100 .tag_protocol = DSA_TAG_PROTO_EDSA,
101 .priv_size = sizeof(struct mv88e6xxx_priv_state),
102 .probe = mv88e6171_probe,
103 .setup = mv88e6171_setup,
104 .set_addr = mv88e6xxx_set_addr_indirect,
105 .phy_read = mv88e6xxx_phy_read_indirect,
106 .phy_write = mv88e6xxx_phy_write_indirect,
107 .poll_link = mv88e6xxx_poll_link,
108 .get_strings = mv88e6xxx_get_strings,
109 .get_ethtool_stats = mv88e6xxx_get_ethtool_stats,
110 .get_sset_count = mv88e6xxx_get_sset_count,
111 .adjust_link = mv88e6xxx_adjust_link,
112#ifdef CONFIG_NET_DSA_HWMON
113 .get_temp = mv88e6xxx_get_temp,
114#endif
115 .get_regs_len = mv88e6xxx_get_regs_len,
116 .get_regs = mv88e6xxx_get_regs,
117 .port_join_bridge = mv88e6xxx_join_bridge,
118 .port_leave_bridge = mv88e6xxx_leave_bridge,
119 .port_stp_update = mv88e6xxx_port_stp_update,
120 .port_pvid_get = mv88e6xxx_port_pvid_get,
121 .port_pvid_set = mv88e6xxx_port_pvid_set,
122 .port_vlan_add = mv88e6xxx_port_vlan_add,
123 .port_vlan_del = mv88e6xxx_port_vlan_del,
124 .vlan_getnext = mv88e6xxx_vlan_getnext,
125 .port_fdb_add = mv88e6xxx_port_fdb_add,
126 .port_fdb_del = mv88e6xxx_port_fdb_del,
127 .port_fdb_getnext = mv88e6xxx_port_fdb_getnext,
128};
129
130MODULE_ALIAS("platform:mv88e6171");
131MODULE_ALIAS("platform:mv88e6175");
132MODULE_ALIAS("platform:mv88e6350");
133MODULE_ALIAS("platform:mv88e6351");