/* * net/dsa/mv88e6123_61_65.c - Marvell 88e6123/6161/6165 switch chip support * Copyright (c) 2008 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" static char *mv88e6123_61_65_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 == 0x1210) return "Marvell 88E6123"; if (ret == 0x1610) return "Marvell 88E6161"; if (ret == 0x1650) return "Marvell 88E6165"; } return NULL; } static int mv88e6123_61_65_switch_reset(struct dsa_switch *ds) { int i; int ret; /* * Set all ports to the disabled state. */ for (i = 0; i < 8; 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 mv88e6123_61_65_setup_global(struct dsa_switch *ds) { int ret; int i; /* * Disable the PHY polling unit (since there won't be any * external PHYs to poll), don't discard packets with * excessive collisions, and mask all interrupt sources. */ REG_WRITE(REG_GLOBAL, 0x04, 0x0000); /* * 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; /* * Configure the cpu port, and configure the cpu port as the * port to which ingress and egress monitor frames are to be * sent. */ REG_WRITE(REG_GLOBAL, 0x1a, (ds->cpu_port * 0x1110)); /* * Disable remote management for now, and set the switch's * DSA device number to zero. */ REG_WRITE(REG_GLOBAL, 0x1c, 0x0000); /* * Send all frames with destination addresses matching * 01:80:c2:00:00:2x to the CPU port. */ REG_WRITE(REG_GLOBAL2, 0x02, 0xffff); /* * Send all frames with destination addresses matching * 01:80:c2:00:00:0x to the CPU port. */ REG_WRITE(REG_GLOBAL2, 0x03, 0xffff); /* * Disable the loopback filter, disable flow control * messages, disable flood broadcast override, disable * removing of provider tags, disable ATU age violation * interrupts, disable tag flow control, force flow * control priority to the highest, and send all special * multicast frames to the CPU at the highest priority. */ REG_WRITE(REG_GLOBAL2, 0x05, 0x00ff); /* * Map all DSA device IDs to the CPU port. */ for (i = 0; i < 32; i++) REG_WRITE(REG_GLOBAL2, 0x06, 0x8000 | (i << 8) | ds->cpu_port); /* * Clear all trunk masks. */ for (i = 0; i < 8; i++) REG_WRITE(REG_GLOBAL2, 0x07, 0x8000 | (i << 12) | 0xff); /* * Clear all trunk mappings. */ for (i = 0; i < 16; i++) REG_WRITE(REG_GLOBAL2, 0x08, 0x8000 | (i << 11)); /* * Disable ingress rate limiting by resetting all ingress * rate limit registers to their initial state. */ for (i = 0; i < 6; i++) REG_WRITE(REG_GLOBAL2, 0x09, 0x9000 | (i << 8)); /* * Initialise cross-chip port VLAN table to reset defaults. */ REG_WRITE(REG_GLOBAL2, 0x0b, 0x9000); /* * Clear the priority override table. */ for (i = 0; i < 16; i++) REG_WRITE(REG_GLOBAL2, 0x0f, 0x8000 | (i << 8)); /* @@@ initialise AVB (22/23) watchdog (27) sdet (29) registers */ return 0; } static int mv88e6123_61_65_setup_port(struct dsa_switch *ds, int p) { int addr = REG_PORT(p); /* * MAC Forcing register: don't force link, speed, duplex * or flow control state to any particular values. */ REG_WRITE(addr, 0x01, 0x0003); /* * Do not limit the period of time that this port can be * paused for by the remote end or the period of time that * this port can pause the remote end. */ REG_WRITE(addr, 0x02, 0x0000); /* * Port Control: disable Drop-on-Unlock, disable Drop-on-Lock, * configure the requested (DSA/EDSA) tagging mode if this is * the CPU port, disable Header mode, enable IGMP/MLD snooping, * disable VLAN tunneling, determine priority by looking at * 802.1p and IP priority fields (IP prio has precedence), and * set STP state to Forwarding. Finally, if this is the CPU * port, additionally enable forwarding of unknown unicast and * multicast addresses. */ REG_WRITE(addr, 0x04, (p == ds->cpu_port) ? (ds->tag_protocol == htons(ETH_P_DSA)) ? 0x053f : 0x373f : 0x0433); /* * 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, (p == ds->cpu_port) ? 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 CPU port. */ REG_WRITE(addr, 0x06, ((p & 0xf) << 12) | ((p == ds->cpu_port) ? ds->valid_port_mask : (1 << ds->cpu_port))); /* * 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, set the maximum * frame size to 10240 bytes, 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 all * received packets as usual, disable ARP mirroring and don't * send a copy of all transmitted/received frames on this port * to the CPU. */ REG_WRITE(addr, 0x08, 0x2080); /* * Egress rate control: disable egress rate control. */ REG_WRITE(addr, 0x09, 0x0001); /* * Egress rate control 2: disable egress rate control. */ 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); /* * Port ATU control: disable limiting the number of address * database entries that this port is allowed to use. */ REG_WRITE(addr, 0x0c, 0x0000); /* * Priorit Override: disable DA, SA and VTU priority override. */ REG_WRITE(addr, 0x0d, 0x0000); /* * Port Ethertype: use the Ethertype DSA Ethertype value. */ REG_WRITE(addr, 0x0f, ETH_P_EDSA); /* * 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 mv88e6123_61_65_setup(struct dsa_switch *ds) { struct mv88e6xxx_priv_state *ps = (void *)(ds + 1); int i; int ret; mutex_init(&ps->smi_mutex); mutex_init(&ps->stats_mutex); ret = mv88e6123_61_65_switch_reset(ds); if (ret < 0) return ret; /* @@@ initialise vtu and atu */ ret = mv88e6123_61_65_setup_global(ds); if (ret < 0) return ret; for (i = 0; i < 6; i++) { ret = mv88e6123_61_65_setup_port(ds, i); if (ret < 0) return ret; } return 0; } static int mv88e6123_61_65_port_to_phy_addr(int port) { if (port >= 0 && port <= 4) return port; return -1; } static int mv88e6123_61_65_phy_read(struct dsa_switch *ds, int port, int regnum) { int addr = mv88e6123_61_65_port_to_phy_addr(port); return mv88e6xxx_phy_read(ds, addr, regnum); } static int mv88e6123_61_65_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val) { int addr = mv88e6123_61_65_port_to_phy_addr(port); return mv88e6xxx_phy_write(ds, addr, regnum, val); } static struct mv88e6xxx_hw_stat mv88e6123_61_65_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 mv88e6123_61_65_get_strings(struct dsa_switch *ds, int port, uint8_t *data) { mv88e6xxx_get_strings(ds, ARRAY_SIZE(mv88e6123_61_65_hw_stats), mv88e6123_61_65_hw_stats, port, data); } static void mv88e6123_61_65_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data) { mv88e6xxx_get_ethtool_stats(ds, ARRAY_SIZE(mv88e6123_61_65_hw_stats), mv88e6123_61_65_hw_stats, port, data); } static int mv88e6123_61_65_get_sset_count(struct dsa_switch *ds) { return ARRAY_SIZE(mv88e6123_61_65_hw_stats); } static struct dsa_switch_driver mv88e6123_61_65_switch_driver = { .tag_protocol = __constant_htons(ETH_P_EDSA), .priv_size = sizeof(struct mv88e6xxx_priv_state), .probe = mv88e6123_61_65_probe, .setup = mv88e6123_61_65_setup, .set_addr = mv88e6xxx_set_addr_indirect, .phy_read = mv88e6123_61_65_phy_read, .phy_write = mv88e6123_61_65_phy_write, .poll_link = mv88e6xxx_poll_link, .get_strings = mv88e6123_61_65_get_strings, .get_ethtool_stats = mv88e6123_61_65_get_ethtool_stats, .get_sset_count = mv88e6123_61_65_get_sset_count, }; int __init mv88e6123_61_65_init(void) { register_switch_driver(&mv88e6123_61_65_switch_driver); return 0; } module_init(mv88e6123_61_65_init); void __exit mv88e6123_61_65_cleanup(void) { unregister_switch_driver(&mv88e6123_61_65_switch_driver); } module_exit(mv88e6123_61_65_cleanup);