/* * net/dsa/mv88e6131.c - Marvell 88e6095/6095f/6131 switch chip support * 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 #include #include #include #include #include #include #include "mv88e6xxx.h" /* Switch product IDs */ #define ID_6085 0x04a0 #define ID_6095 0x0950 #define ID_6131 0x1060 #define ID_6131_B2 0x1066 static char *mv88e6131_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), 0x03); if (ret >= 0) { int ret_masked = ret & 0xfff0; if (ret_masked == ID_6085) return "Marvell 88E6085"; if (ret_masked == ID_6095) return "Marvell 88E6095/88E6095F"; if (ret == ID_6131_B2) return "Marvell 88E6131 (B2)"; if (ret_masked == ID_6131) return "Marvell 88E6131"; } return NULL; } static int mv88e6131_switch_reset(struct dsa_switch *ds) { int i; int ret; unsigned long timeout; /* Set all ports to the disabled state. */ for (i = 0; i < 11; i++) { ret = REG_READ(REG_PORT(i), 0x04); REG_WRITE(REG_PORT(i), 0x04, ret & 0xfffc); } /* Wait for transmit queues to drain. */ usleep_range(2000, 4000); /* Reset the switch. */ REG_WRITE(REG_GLOBAL, 0x04, 0xc400); /* Wait up to one second for reset to complete. */ timeout = jiffies + 1 * HZ; while (time_before(jiffies, timeout)) { ret = REG_READ(REG_GLOBAL, 0x00); if ((ret & 0xc800) == 0xc800) break; usleep_range(1000, 2000); } if (time_after(jiffies, timeout)) return -ETIMEDOUT; return 0; } static int mv88e6131_setup_global(struct dsa_switch *ds) { int ret; int i; /* Enable the PHY polling unit, don't discard packets with * excessive collisions, use a weighted fair queueing scheme * to arbitrate between packet queues, set the maximum frame * size to 1632, and mask all interrupt sources. */ REG_WRITE(REG_GLOBAL, 0x04, 0x4400); /* 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; /* Set the VLAN ethertype to 0x8100. */ REG_WRITE(REG_GLOBAL, 0x19, 0x8100); /* Disable ARP mirroring, and configure the upstream port as * the port to which ingress and egress monitor frames are to * be sent. */ REG_WRITE(REG_GLOBAL, 0x1a, (dsa_upstream_port(ds) * 0x1100) | 0x00f0); /* Disable cascade port functionality unless this device * is used in a cascade configuration, and set the switch's * DSA device number. */ if (ds->dst->pd->nr_chips > 1) REG_WRITE(REG_GLOBAL, 0x1c, 0xf000 | (ds->index & 0x1f)); else REG_WRITE(REG_GLOBAL, 0x1c, 0xe000 | (ds->index & 0x1f)); /* Send all frames with destination addresses matching * 01:80:c2:00:00:0x to the CPU port. */ REG_WRITE(REG_GLOBAL2, 0x03, 0xffff); /* Ignore removed tag data on doubly tagged packets, disable * flow control messages, force flow control priority to the * highest, and send all special multicast frames to the CPU * port at the highest priority. */ REG_WRITE(REG_GLOBAL2, 0x05, 0x00ff); /* Program the DSA routing table. */ for (i = 0; i < 32; i++) { int nexthop; nexthop = 0x1f; if (i != ds->index && i < ds->dst->pd->nr_chips) nexthop = ds->pd->rtable[i] & 0x1f; REG_WRITE(REG_GLOBAL2, 0x06, 0x8000 | (i << 8) | nexthop); } /* Clear all trunk masks. */ for (i = 0; i < 8; i++) REG_WRITE(REG_GLOBAL2, 0x07, 0x8000 | (i << 12) | 0x7ff); /* Clear all trunk mappings. */ for (i = 0; i < 16; i++) REG_WRITE(REG_GLOBAL2, 0x08, 0x8000 | (i << 11)); /* Force the priority of IGMP/MLD snoop frames and ARP frames * to the highest setting. */ REG_WRITE(REG_GLOBAL2, 0x0f, 0x00ff); return 0; } static int mv88e6131_setup_port(struct dsa_switch *ds, int p) { struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); int addr = REG_PORT(p); u16 val; /* MAC Forcing register: don't force link, speed, duplex * or flow control state to any particular values on physical * ports, but force the CPU port and all DSA ports to 1000 Mb/s * (100 Mb/s on 6085) full duplex. */ if (dsa_is_cpu_port(ds, p) || ds->dsa_port_mask & (1 << p)) if (ps->id == ID_6085) REG_WRITE(addr, 0x01, 0x003d); /* 100 Mb/s */ else REG_WRITE(addr, 0x01, 0x003e); /* 1000 Mb/s */ else REG_WRITE(addr, 0x01, 0x0003); /* Port Control: disable Core Tag, disable Drop-on-Lock, * transmit frames unmodified, disable Header mode, * enable IGMP/MLD snoop, disable DoubleTag, disable VLAN * tunneling, determine priority by looking at 802.1p and * IP priority fields (IP prio has precedence), and set STP * state to Forwarding. * * If this is the upstream port for this switch, enable * forwarding of unknown unicasts, and enable DSA tagging * mode. * * If this is the link to another switch, use DSA tagging * mode, but do not enable forwarding of unknown unicasts. */ val = 0x0433; if (p == dsa_upstream_port(ds)) { val |= 0x0104; /* On 6085, unknown multicast forward is controlled * here rather than in Port Control 2 register. */ if (ps->id == ID_6085) val |= 0x0008; } if (ds->dsa_port_mask & (1 << p)) val |= 0x0100; REG_WRITE(addr, 0x04, val); /* 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, dsa_is_cpu_port(ds, p) ? 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 upstream port. */ val = (p & 0xf) << 12; if (dsa_is_cpu_port(ds, p)) val |= ds->phys_port_mask; else val |= 1 << dsa_upstream_port(ds); REG_WRITE(addr, 0x06, val); /* 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, don't use * VLAN-based, source address-based or destination * address-based priority overrides, 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 received packets as usual, don't send a copy * of all transmitted/received frames on this port to the * CPU, and configure the upstream port number. * * If this is the upstream port for this switch, enable * forwarding of unknown multicast addresses. */ if (ps->id == ID_6085) /* on 6085, bits 3:0 are reserved, bit 6 control ARP * mirroring, and multicast forward is handled in * Port Control register. */ REG_WRITE(addr, 0x08, 0x0080); else { val = 0x0080 | dsa_upstream_port(ds); if (p == dsa_upstream_port(ds)) val |= 0x0040; REG_WRITE(addr, 0x08, val); } /* Rate Control: disable ingress rate limiting. */ REG_WRITE(addr, 0x09, 0x0000); /* Rate Control 2: disable egress rate limiting. */ 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); /* 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 mv88e6131_setup(struct dsa_switch *ds) { struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); int i; int ret; mutex_init(&ps->smi_mutex); mv88e6xxx_ppu_state_init(ds); mutex_init(&ps->stats_mutex); ps->id = REG_READ(REG_PORT(0), 0x03) & 0xfff0; ret = mv88e6131_switch_reset(ds); if (ret < 0) return ret; /* @@@ initialise vtu and atu */ ret = mv88e6131_setup_global(ds); if (ret < 0) return ret; for (i = 0; i < 11; i++) { ret = mv88e6131_setup_port(ds, i); if (ret < 0) return ret; } return 0; } static int mv88e6131_port_to_phy_addr(int port) { if (port >= 0 && port <= 11) return port; return -1; } static int mv88e6131_phy_read(struct dsa_switch *ds, int port, int regnum) { int addr = mv88e6131_port_to_phy_addr(port); return mv88e6xxx_phy_read_ppu(ds, addr, regnum); } static int mv88e6131_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val) { int addr = mv88e6131_port_to_phy_addr(port); return mv88e6xxx_phy_write_ppu(ds, addr, regnum, val); } static struct mv88e6xxx_hw_stat mv88e6131_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 mv88e6131_get_strings(struct dsa_switch *ds, int port, uint8_t *data) { mv88e6xxx_get_strings(ds, ARRAY_SIZE(mv88e6131_hw_stats), mv88e6131_hw_stats, port, data); } static void mv88e6131_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data) { mv88e6xxx_get_ethtool_stats(ds, ARRAY_SIZE(mv88e6131_hw_stats), mv88e6131_hw_stats, port, data); } static int mv88e6131_get_sset_count(struct dsa_switch *ds) { return ARRAY_SIZE(mv88e6131_hw_stats); } struct dsa_switch_driver mv88e6131_switch_driver = { .tag_protocol = DSA_TAG_PROTO_DSA, .priv_size = sizeof(struct mv88e6xxx_priv_state), .probe = mv88e6131_probe, .setup = mv88e6131_setup, .set_addr = mv88e6xxx_set_addr_direct, .phy_read = mv88e6131_phy_read, .phy_write = mv88e6131_phy_write, .poll_link = mv88e6xxx_poll_link, .get_strings = mv88e6131_get_strings, .get_ethtool_stats = mv88e6131_get_ethtool_stats, .get_sset_count = mv88e6131_get_sset_count, }; MODULE_ALIAS("platform:mv88e6085"); MODULE_ALIAS("platform:mv88e6095"); MODULE_ALIAS("platform:mv88e6095f"); MODULE_ALIAS("platform:mv88e6131");