2 * net/dsa/mv88e6063.c - Driver for Marvell 88e6063 switch chips
3 * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org>
5 * This driver was base on: net/dsa/mv88e6060.c
6 * net/dsa/mv88e6063.c - Driver for Marvell 88e6060 switch chips
7 * Copyright (c) 2008-2009 Marvell Semiconductor
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
15 #include <linux/version.h>
16 #include <linux/list.h>
17 #include <linux/netdevice.h>
18 #include <linux/phy.h>
22 #define REG_PHY(p) (REG_BASE + (p))
23 #define REG_PORT(p) (REG_BASE + 8 + (p))
24 #define REG_GLOBAL (REG_BASE + 0x0f)
27 static int reg_read(struct dsa_switch *ds, int addr, int reg)
29 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,15,0)
30 return mdiobus_read(ds->master_mii_bus, addr, reg);
32 struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev);
33 return mdiobus_read(bus, addr, reg);
37 #define REG_READ(addr, reg) \
41 __ret = reg_read(ds, addr, reg); \
48 static int reg_write(struct dsa_switch *ds, int addr, int reg, u16 val)
50 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,15,0)
51 return mdiobus_write(ds->master_mii_bus, addr, reg, val);
53 struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev);
54 return mdiobus_write(bus, addr, reg, val);
58 #define REG_WRITE(addr, reg, val) \
62 __ret = reg_write(ds, addr, reg, val); \
67 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,15,0)
68 static char *mv88e6063_probe(struct mii_bus *bus, int sw_addr)
70 static char *mv88e6063_probe(struct device *host_dev, int sw_addr)
73 struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
76 ret = mdiobus_read(bus, REG_PORT(0), 0x03);
80 return "Marvell 88E6063";
86 static int mv88e6063_switch_reset(struct dsa_switch *ds)
92 * Set all ports to the disabled state.
94 for (i = 0; i < NUM_PORTS; i++) {
95 ret = REG_READ(REG_PORT(i), 0x04);
96 REG_WRITE(REG_PORT(i), 0x04, ret & 0xfffc);
100 * Wait for transmit queues to drain.
107 REG_WRITE(REG_GLOBAL, 0x0a, 0xa130);
110 * Wait up to one second for reset to complete.
112 for (i = 0; i < 1000; i++) {
113 ret = REG_READ(REG_GLOBAL, 0x00);
114 if ((ret & 0x8000) == 0x0000)
125 static int mv88e6063_setup_global(struct dsa_switch *ds)
128 * Disable discarding of frames with excessive collisions,
129 * set the maximum frame size to 1536 bytes, and mask all
132 REG_WRITE(REG_GLOBAL, 0x04, 0x0800);
135 * Enable automatic address learning, set the address
136 * database size to 1024 entries, and set the default aging
139 REG_WRITE(REG_GLOBAL, 0x0a, 0x2130);
144 static int mv88e6063_setup_port(struct dsa_switch *ds, int p)
146 int addr = REG_PORT(p);
149 * Do not force flow control, disable Ingress and Egress
150 * Header tagging, disable VLAN tunneling, and set the port
151 * state to Forwarding. Additionally, if this is the CPU
152 * port, enable Ingress and Egress Trailer tagging mode.
154 REG_WRITE(addr, 0x04, dsa_is_cpu_port(ds, p) ? 0x4103 : 0x0003);
157 * Port based VLAN map: give each port its own address
158 * database, allow the CPU port to talk to each of the 'real'
159 * ports, and allow each of the 'real' ports to only talk to
162 REG_WRITE(addr, 0x06,
164 (dsa_is_cpu_port(ds, p) ?
166 (1 << ds->dst->cpu_port)));
169 * Port Association Vector: when learning source addresses
170 * of packets, add the address to the address database using
171 * a port bitmap that has only the bit for this port set and
172 * the other bits clear.
174 REG_WRITE(addr, 0x0b, 1 << p);
179 static int mv88e6063_setup(struct dsa_switch *ds)
184 ret = mv88e6063_switch_reset(ds);
188 /* @@@ initialise atu */
190 ret = mv88e6063_setup_global(ds);
194 for (i = 0; i < NUM_PORTS; i++) {
195 ret = mv88e6063_setup_port(ds, i);
203 static int mv88e6063_set_addr(struct dsa_switch *ds, u8 *addr)
205 REG_WRITE(REG_GLOBAL, 0x01, (addr[0] << 8) | addr[1]);
206 REG_WRITE(REG_GLOBAL, 0x02, (addr[2] << 8) | addr[3]);
207 REG_WRITE(REG_GLOBAL, 0x03, (addr[4] << 8) | addr[5]);
212 static int mv88e6063_port_to_phy_addr(int port)
214 if (port >= 0 && port <= NUM_PORTS)
215 return REG_PHY(port);
219 static int mv88e6063_phy_read(struct dsa_switch *ds, int port, int regnum)
223 addr = mv88e6063_port_to_phy_addr(port);
227 return reg_read(ds, addr, regnum);
231 mv88e6063_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val)
235 addr = mv88e6063_port_to_phy_addr(port);
239 return reg_write(ds, addr, regnum, val);
242 static void mv88e6063_poll_link(struct dsa_switch *ds)
246 for (i = 0; i < DSA_MAX_PORTS; i++) {
247 struct net_device *dev;
248 int uninitialized_var(port_status);
259 if (dev->flags & IFF_UP) {
260 port_status = reg_read(ds, REG_PORT(i), 0x00);
264 link = !!(port_status & 0x1000);
268 if (netif_carrier_ok(dev)) {
269 printk(KERN_INFO "%s: link down\n", dev->name);
270 netif_carrier_off(dev);
275 speed = (port_status & 0x0100) ? 100 : 10;
276 duplex = (port_status & 0x0200) ? 1 : 0;
277 fc = ((port_status & 0xc000) == 0xc000) ? 1 : 0;
279 if (!netif_carrier_ok(dev)) {
280 printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, "
281 "flow control %sabled\n", dev->name,
282 speed, duplex ? "full" : "half",
284 netif_carrier_on(dev);
289 static struct dsa_switch_driver mv88e6063_switch_driver = {
290 .tag_protocol = htons(ETH_P_TRAILER),
291 .probe = mv88e6063_probe,
292 .setup = mv88e6063_setup,
293 .set_addr = mv88e6063_set_addr,
294 .phy_read = mv88e6063_phy_read,
295 .phy_write = mv88e6063_phy_write,
296 .poll_link = mv88e6063_poll_link,
299 static int __init mv88e6063_init(void)
301 register_switch_driver(&mv88e6063_switch_driver);
304 module_init(mv88e6063_init);
306 static void __exit mv88e6063_cleanup(void)
308 unregister_switch_driver(&mv88e6063_switch_driver);
310 module_exit(mv88e6063_cleanup);