--- /dev/null
+/*
+ * net/dsa/mv88e6063.c - Driver for Marvell 88e6063 switch chips
+ * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This driver was base on: net/dsa/mv88e6060.c
+ * net/dsa/mv88e6063.c - Driver for Marvell 88e6060 switch chips
+ * 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"
+
+#define REG_BASE 0x10
+#define REG_PHY(p) (REG_BASE + (p))
+#define REG_PORT(p) (REG_BASE + 8 + (p))
+#define REG_GLOBAL (REG_BASE + 0x0f)
+#define NUM_PORTS 7
+
+static int reg_read(struct dsa_switch *ds, int addr, int reg)
+{
+ return mdiobus_read(ds->master_mii_bus, addr, reg);
+}
+
+#define REG_READ(addr, reg) \
+ ({ \
+ int __ret; \
+ \
+ __ret = reg_read(ds, addr, reg); \
+ if (__ret < 0) \
+ return __ret; \
+ __ret; \
+ })
+
+
+static int reg_write(struct dsa_switch *ds, int addr, int reg, u16 val)
+{
+ return mdiobus_write(ds->master_mii_bus, addr, reg, val);
+}
+
+#define REG_WRITE(addr, reg, val) \
+ ({ \
+ int __ret; \
+ \
+ __ret = reg_write(ds, addr, reg, val); \
+ if (__ret < 0) \
+ return __ret; \
+ })
+
+static char *mv88e6063_probe(struct mii_bus *bus, int sw_addr)
+{
+ int ret;
+
+ ret = mdiobus_read(bus, REG_PORT(0), 0x03);
+ if (ret >= 0) {
+ ret &= 0xfff0;
+ if (ret == 0x1530)
+ return "Marvell 88E6063";
+ }
+
+ return NULL;
+}
+
+static int mv88e6063_switch_reset(struct dsa_switch *ds)
+{
+ int i;
+ int ret;
+
+ /*
+ * Set all ports to the disabled state.
+ */
+ for (i = 0; i < NUM_PORTS; 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, 0x0a, 0xa130);
+
+ /*
+ * Wait up to one second for reset to complete.
+ */
+ for (i = 0; i < 1000; i++) {
+ ret = REG_READ(REG_GLOBAL, 0x00);
+ if ((ret & 0x8000) == 0x0000)
+ break;
+
+ msleep(1);
+ }
+ if (i == 1000)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static int mv88e6063_setup_global(struct dsa_switch *ds)
+{
+ /*
+ * Disable discarding of frames with excessive collisions,
+ * set the maximum frame size to 1536 bytes, and mask all
+ * interrupt sources.
+ */
+ REG_WRITE(REG_GLOBAL, 0x04, 0x0800);
+
+ /*
+ * Enable automatic address learning, set the address
+ * database size to 1024 entries, and set the default aging
+ * time to 5 minutes.
+ */
+ REG_WRITE(REG_GLOBAL, 0x0a, 0x2130);
+
+ return 0;
+}
+
+static int mv88e6063_setup_port(struct dsa_switch *ds, int p)
+{
+ int addr = REG_PORT(p);
+
+ /*
+ * Do not force flow control, disable Ingress and Egress
+ * Header tagging, disable VLAN tunneling, and set the port
+ * state to Forwarding. Additionally, if this is the CPU
+ * port, enable Ingress and Egress Trailer tagging mode.
+ */
+ REG_WRITE(addr, 0x04, dsa_is_cpu_port(ds, p) ? 0x4103 : 0x0003);
+
+ /*
+ * 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 CPU port.
+ */
+ REG_WRITE(addr, 0x06,
+ ((p & 0xf) << 12) |
+ (dsa_is_cpu_port(ds, p) ?
+ ds->phys_port_mask :
+ (1 << ds->dst->cpu_port)));
+
+ /*
+ * 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);
+
+ return 0;
+}
+
+static int mv88e6063_setup(struct dsa_switch *ds)
+{
+ int i;
+ int ret;
+
+ ret = mv88e6063_switch_reset(ds);
+ if (ret < 0)
+ return ret;
+
+ /* @@@ initialise atu */
+
+ ret = mv88e6063_setup_global(ds);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < NUM_PORTS; i++) {
+ ret = mv88e6063_setup_port(ds, i);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mv88e6063_set_addr(struct dsa_switch *ds, u8 *addr)
+{
+ REG_WRITE(REG_GLOBAL, 0x01, (addr[0] << 8) | addr[1]);
+ REG_WRITE(REG_GLOBAL, 0x02, (addr[2] << 8) | addr[3]);
+ REG_WRITE(REG_GLOBAL, 0x03, (addr[4] << 8) | addr[5]);
+
+ return 0;
+}
+
+static int mv88e6063_port_to_phy_addr(int port)
+{
+ if (port >= 0 && port <= NUM_PORTS)
+ return REG_PHY(port);
+ return -1;
+}
+
+static int mv88e6063_phy_read(struct dsa_switch *ds, int port, int regnum)
+{
+ int addr;
+
+ addr = mv88e6063_port_to_phy_addr(port);
+ if (addr == -1)
+ return 0xffff;
+
+ return reg_read(ds, addr, regnum);
+}
+
+static int
+mv88e6063_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val)
+{
+ int addr;
+
+ addr = mv88e6063_port_to_phy_addr(port);
+ if (addr == -1)
+ return 0xffff;
+
+ return reg_write(ds, addr, regnum, val);
+}
+
+static void mv88e6063_poll_link(struct dsa_switch *ds)
+{
+ int i;
+
+ for (i = 0; i < DSA_MAX_PORTS; i++) {
+ struct net_device *dev;
+ int uninitialized_var(port_status);
+ int link;
+ int speed;
+ int duplex;
+ int fc;
+
+ dev = ds->ports[i];
+ if (dev == NULL)
+ continue;
+
+ link = 0;
+ if (dev->flags & IFF_UP) {
+ port_status = reg_read(ds, REG_PORT(i), 0x00);
+ if (port_status < 0)
+ continue;
+
+ link = !!(port_status & 0x1000);
+ }
+
+ if (!link) {
+ if (netif_carrier_ok(dev)) {
+ printk(KERN_INFO "%s: link down\n", dev->name);
+ netif_carrier_off(dev);
+ }
+ continue;
+ }
+
+ speed = (port_status & 0x0100) ? 100 : 10;
+ duplex = (port_status & 0x0200) ? 1 : 0;
+ fc = ((port_status & 0xc000) == 0xc000) ? 1 : 0;
+
+ if (!netif_carrier_ok(dev)) {
+ printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, "
+ "flow control %sabled\n", dev->name,
+ speed, duplex ? "full" : "half",
+ fc ? "en" : "dis");
+ netif_carrier_on(dev);
+ }
+ }
+}
+
+static struct dsa_switch_driver mv88e6063_switch_driver = {
+ .tag_protocol = htons(ETH_P_TRAILER),
+ .probe = mv88e6063_probe,
+ .setup = mv88e6063_setup,
+ .set_addr = mv88e6063_set_addr,
+ .phy_read = mv88e6063_phy_read,
+ .phy_write = mv88e6063_phy_write,
+ .poll_link = mv88e6063_poll_link,
+};
+
+static int __init mv88e6063_init(void)
+{
+ register_switch_driver(&mv88e6063_switch_driver);
+ return 0;
+}
+module_init(mv88e6063_init);
+
+static void __exit mv88e6063_cleanup(void)
+{
+ unregister_switch_driver(&mv88e6063_switch_driver);
+}
+module_exit(mv88e6063_cleanup);
projects / openwrt.git / blobdiff