OpenWrt – Rev 1
?pathlinks?
/*
* 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/version.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/phy.h>
#include <net/dsa.h>
#include <linux/version.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)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,7,0)
struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev);
return mdiobus_read(bus, addr, reg);
#else
struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->dev);
return mdiobus_read(bus, addr, reg);
#endif
}
#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)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,7,0)
struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->master_dev);
return mdiobus_write(bus, addr, reg, val);
#else
struct mii_bus *bus = dsa_host_dev_to_mii_bus(ds->dev);
return mdiobus_write(bus, addr, reg, val);
#endif
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0)
static enum dsa_tag_protocol mv88e6063_get_tag_protocol(struct dsa_switch *ds)
{
return DSA_TAG_PROTO_TRAILER;
}
#endif
#define REG_WRITE(addr, reg, val) \
({ \
int __ret; \
\
__ret = reg_write(ds, addr, reg, val); \
if (__ret < 0) \
return __ret; \
})
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,7,0)
static char *mv88e6063_drv_probe(struct device *host_dev, int sw_addr)
#else
static const char *mv88e6063_drv_probe(struct device *dsa_dev,
struct device *host_dev, int sw_addr,
void **_priv)
#endif
{
struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
int ret;
if (!bus)
return NULL;
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) ?
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,7,0)
ds->phys_port_mask :
#else
ds->enabled_port_mask :
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
(1 << ds->dst->cpu_port)));
#else
(1 << ds->dst->cpu_dp->index)));
#endif
/*
* 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);
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,9,0)
static struct dsa_switch_driver mv88e6063_switch_ops = {
#else
static struct dsa_switch_ops mv88e6063_switch_ops = {
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,8,0)
.tag_protocol = htons(ETH_P_TRAILER),
#else
.get_tag_protocol = mv88e6063_get_tag_protocol,
#endif
.probe = mv88e6063_drv_probe,
.setup = mv88e6063_setup,
.set_addr = mv88e6063_set_addr,
.phy_read = mv88e6063_phy_read,
.phy_write = mv88e6063_phy_write,
};
#if LINUX_VERSION_CODE > KERNEL_VERSION(4,13,0)
static struct dsa_switch_driver mv88e6063_switch_drv = {
.ops = &mv88e6063_switch_ops,
};
#endif
static int __init mv88e6063_init(void)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
register_switch_driver(&mv88e6063_switch_ops);
#else
register_switch_driver(&mv88e6063_switch_drv);
#endif
return 0;
}
module_init(mv88e6063_init);
static void __exit mv88e6063_cleanup(void)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
unregister_switch_driver(&mv88e6063_switch_ops);
#else
unregister_switch_driver(&mv88e6063_switch_drv);
#endif
}
module_exit(mv88e6063_cleanup);