diff options
Diffstat (limited to 'net/dsa/mv88e6131.c')
| -rw-r--r-- | net/dsa/mv88e6131.c | 380 |
1 files changed, 380 insertions, 0 deletions
diff --git a/net/dsa/mv88e6131.c b/net/dsa/mv88e6131.c new file mode 100644 index 0000000..36e01eb --- /dev/null +++ b/net/dsa/mv88e6131.c @@ -0,0 +1,380 @@ +/* + * net/dsa/mv88e6131.c - Marvell 88e6131 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 *mv88e6131_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 == 0x1060) + return "Marvell 88E6131"; + } + + return NULL; +} + +static int mv88e6131_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 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 cpu port as the + * port to which ingress and egress monitor frames are to be + * sent. + */ + REG_WRITE(REG_GLOBAL, 0x1a, (ds->cpu_port * 0x1100) | 0x00f0); + + /* + * Disable cascade port functionality, and set the switch's + * DSA device number to zero. + */ + REG_WRITE(REG_GLOBAL, 0x1c, 0xe000); + + /* + * 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 higest 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)); + + /* + * 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) +{ + 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); + + /* + * 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. Finally, if this is the CPU port, + * additionally enable DSA tagging and forwarding of unknown + * unicast addresses. + */ + REG_WRITE(addr, 0x04, (p == ds->cpu_port) ? 0x0537 : 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, 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 CPU port number. Also, if this + * is the CPU port, enable forwarding of unknown multicast + * addresses. + */ + REG_WRITE(addr, 0x08, + ((p == ds->cpu_port) ? 0x00c0 : 0x0080) | + ds->cpu_port); + + /* + * 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 = (void *)(ds + 1); + int i; + int ret; + + mutex_init(&ps->smi_mutex); + mv88e6xxx_ppu_state_init(ds); + mutex_init(&ps->stats_mutex); + + 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 < 6; 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 != 3 && port <= 7) + 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); +} + +static struct dsa_switch_driver mv88e6131_switch_driver = { + .tag_protocol = __constant_htons(ETH_P_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, +}; + +int __init mv88e6131_init(void) +{ + register_switch_driver(&mv88e6131_switch_driver); + return 0; +} +module_init(mv88e6131_init); + +void __exit mv88e6131_cleanup(void) +{ + unregister_switch_driver(&mv88e6131_switch_driver); +} +module_exit(mv88e6131_cleanup); |
