diff options
Diffstat (limited to 'drivers/net/ethernet/xscale/ixp2000/enp2611.c')
| -rw-r--r-- | drivers/net/ethernet/xscale/ixp2000/enp2611.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/drivers/net/ethernet/xscale/ixp2000/enp2611.c b/drivers/net/ethernet/xscale/ixp2000/enp2611.c new file mode 100644 index 000000000000..34a6cfd17930 --- /dev/null +++ b/drivers/net/ethernet/xscale/ixp2000/enp2611.c @@ -0,0 +1,232 @@ +/* + * IXP2400 MSF network device driver for the Radisys ENP2611 + * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org> + * Dedicated to Marija Kulikova. + * + * 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/module.h> +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/init.h> +#include <linux/moduleparam.h> +#include <asm/hardware/uengine.h> +#include <asm/mach-types.h> +#include <asm/io.h> +#include "ixpdev.h" +#include "caleb.h" +#include "ixp2400-msf.h" +#include "pm3386.h" + +/*********************************************************************** + * The Radisys ENP2611 is a PCI form factor board with three SFP GBIC + * slots, connected via two PMC/Sierra 3386s and an SPI-3 bridge FPGA + * to the IXP2400. + * + * +-------------+ + * SFP GBIC #0 ---+ | +---------+ + * | PM3386 #0 +-------+ | + * SFP GBIC #1 ---+ | | "Caleb" | +---------+ + * +-------------+ | | | | + * | SPI-3 +---------+ IXP2400 | + * +-------------+ | bridge | | | + * SFP GBIC #2 ---+ | | FPGA | +---------+ + * | PM3386 #1 +-------+ | + * | | +---------+ + * +-------------+ + * ^ ^ ^ + * | 1.25Gbaud | 104MHz | 104MHz + * | SERDES ea. | SPI-3 ea. | SPI-3 + * + ***********************************************************************/ +static struct ixp2400_msf_parameters enp2611_msf_parameters = +{ + .rx_mode = IXP2400_RX_MODE_UTOPIA_POS | + IXP2400_RX_MODE_1x32 | + IXP2400_RX_MODE_MPHY | + IXP2400_RX_MODE_MPHY_32 | + IXP2400_RX_MODE_MPHY_POLLED_STATUS | + IXP2400_RX_MODE_MPHY_LEVEL3 | + IXP2400_RX_MODE_RBUF_SIZE_64, + + .rxclk01_multiplier = IXP2400_PLL_MULTIPLIER_16, + + .rx_poll_ports = 3, + + .rx_channel_mode = { + IXP2400_PORT_RX_MODE_MASTER | + IXP2400_PORT_RX_MODE_POS_PHY | + IXP2400_PORT_RX_MODE_POS_PHY_L3 | + IXP2400_PORT_RX_MODE_ODD_PARITY | + IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_RX_MODE_MASTER | + IXP2400_PORT_RX_MODE_POS_PHY | + IXP2400_PORT_RX_MODE_POS_PHY_L3 | + IXP2400_PORT_RX_MODE_ODD_PARITY | + IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_RX_MODE_MASTER | + IXP2400_PORT_RX_MODE_POS_PHY | + IXP2400_PORT_RX_MODE_POS_PHY_L3 | + IXP2400_PORT_RX_MODE_ODD_PARITY | + IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_RX_MODE_MASTER | + IXP2400_PORT_RX_MODE_POS_PHY | + IXP2400_PORT_RX_MODE_POS_PHY_L3 | + IXP2400_PORT_RX_MODE_ODD_PARITY | + IXP2400_PORT_RX_MODE_2_CYCLE_DECODE + }, + + .tx_mode = IXP2400_TX_MODE_UTOPIA_POS | + IXP2400_TX_MODE_1x32 | + IXP2400_TX_MODE_MPHY | + IXP2400_TX_MODE_MPHY_32 | + IXP2400_TX_MODE_MPHY_POLLED_STATUS | + IXP2400_TX_MODE_MPHY_LEVEL3 | + IXP2400_TX_MODE_TBUF_SIZE_64, + + .txclk01_multiplier = IXP2400_PLL_MULTIPLIER_16, + + .tx_poll_ports = 3, + + .tx_channel_mode = { + IXP2400_PORT_TX_MODE_MASTER | + IXP2400_PORT_TX_MODE_POS_PHY | + IXP2400_PORT_TX_MODE_ODD_PARITY | + IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_TX_MODE_MASTER | + IXP2400_PORT_TX_MODE_POS_PHY | + IXP2400_PORT_TX_MODE_ODD_PARITY | + IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_TX_MODE_MASTER | + IXP2400_PORT_TX_MODE_POS_PHY | + IXP2400_PORT_TX_MODE_ODD_PARITY | + IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, + + IXP2400_PORT_TX_MODE_MASTER | + IXP2400_PORT_TX_MODE_POS_PHY | + IXP2400_PORT_TX_MODE_ODD_PARITY | + IXP2400_PORT_TX_MODE_2_CYCLE_DECODE + } +}; + +static struct net_device *nds[3]; +static struct timer_list link_check_timer; + +/* @@@ Poll the SFP moddef0 line too. */ +/* @@@ Try to use the pm3386 DOOL interrupt as well. */ +static void enp2611_check_link_status(unsigned long __dummy) +{ + int i; + + for (i = 0; i < 3; i++) { + struct net_device *dev; + int status; + + dev = nds[i]; + if (dev == NULL) + continue; + + status = pm3386_is_link_up(i); + if (status && !netif_carrier_ok(dev)) { + /* @@@ Should report autonegotiation status. */ + printk(KERN_INFO "%s: NIC Link is Up\n", dev->name); + + pm3386_enable_tx(i); + caleb_enable_tx(i); + netif_carrier_on(dev); + } else if (!status && netif_carrier_ok(dev)) { + printk(KERN_INFO "%s: NIC Link is Down\n", dev->name); + + netif_carrier_off(dev); + caleb_disable_tx(i); + pm3386_disable_tx(i); + } + } + + link_check_timer.expires = jiffies + HZ / 10; + add_timer(&link_check_timer); +} + +static void enp2611_set_port_admin_status(int port, int up) +{ + if (up) { + caleb_enable_rx(port); + + pm3386_set_carrier(port, 1); + pm3386_enable_rx(port); + } else { + caleb_disable_tx(port); + pm3386_disable_tx(port); + /* @@@ Flush out pending packets. */ + pm3386_set_carrier(port, 0); + + pm3386_disable_rx(port); + caleb_disable_rx(port); + } +} + +static int __init enp2611_init_module(void) +{ + int ports; + int i; + + if (!machine_is_enp2611()) + return -ENODEV; + + caleb_reset(); + pm3386_reset(); + + ports = pm3386_port_count(); + for (i = 0; i < ports; i++) { + nds[i] = ixpdev_alloc(i, sizeof(struct ixpdev_priv)); + if (nds[i] == NULL) { + while (--i >= 0) + free_netdev(nds[i]); + return -ENOMEM; + } + + pm3386_init_port(i); + pm3386_get_mac(i, nds[i]->dev_addr); + } + + ixp2400_msf_init(&enp2611_msf_parameters); + + if (ixpdev_init(ports, nds, enp2611_set_port_admin_status)) { + for (i = 0; i < ports; i++) + if (nds[i]) + free_netdev(nds[i]); + return -EINVAL; + } + + init_timer(&link_check_timer); + link_check_timer.function = enp2611_check_link_status; + link_check_timer.expires = jiffies; + add_timer(&link_check_timer); + + return 0; +} + +static void __exit enp2611_cleanup_module(void) +{ + int i; + + del_timer_sync(&link_check_timer); + + ixpdev_deinit(); + for (i = 0; i < 3; i++) + free_netdev(nds[i]); +} + +module_init(enp2611_init_module); +module_exit(enp2611_cleanup_module); +MODULE_LICENSE("GPL"); |