diff options
Diffstat (limited to 'target/linux/ifxmips/files-2.6.32/drivers/net/ifxmips.c')
| -rw-r--r-- | target/linux/ifxmips/files-2.6.32/drivers/net/ifxmips.c | 497 |
1 files changed, 0 insertions, 497 deletions
diff --git a/target/linux/ifxmips/files-2.6.32/drivers/net/ifxmips.c b/target/linux/ifxmips/files-2.6.32/drivers/net/ifxmips.c deleted file mode 100644 index e6d0d9615..000000000 --- a/target/linux/ifxmips/files-2.6.32/drivers/net/ifxmips.c +++ /dev/null @@ -1,497 +0,0 @@ -/* - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. - * - * Copyright (C) 2005 Wu Qi Ming <Qi-Ming.Wu@infineon.com> - * Copyright (C) 2008 John Crispin <blogic@openwrt.org> - */ - -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/interrupt.h> -#include <linux/uaccess.h> -#include <linux/in.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/phy.h> -#include <linux/ip.h> -#include <linux/tcp.h> -#include <linux/skbuff.h> -#include <linux/mm.h> -#include <linux/platform_device.h> -#include <linux/ethtool.h> -#include <linux/init.h> -#include <linux/delay.h> - -#include <asm/checksum.h> - -#include <ifxmips.h> -#include <ifxmips_dma.h> -#include <ifxmips_pmu.h> - -struct ifxmips_mii_priv { - struct net_device_stats stats; - struct dma_device_info *dma_device; - struct sk_buff *skb; - - struct mii_bus *mii_bus; - struct phy_device *phydev; - int oldlink, oldspeed, oldduplex; -}; - -static struct net_device *ifxmips_mii0_dev; -static unsigned char mac_addr[MAX_ADDR_LEN]; - -static int ifxmips_mdiobus_write(struct mii_bus *bus, int phy_addr, - int phy_reg, u16 phy_data) -{ - u32 val = MDIO_ACC_REQUEST | - ((phy_addr & MDIO_ACC_ADDR_MASK) << MDIO_ACC_ADDR_OFFSET) | - ((phy_reg & MDIO_ACC_REG_MASK) << MDIO_ACC_REG_OFFSET) | - phy_data; - - while (ifxmips_r32(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_REQUEST) - ; - ifxmips_w32(val, IFXMIPS_PPE32_MDIO_ACC); - - return 0; -} - -static int ifxmips_mdiobus_read(struct mii_bus *bus, int phy_addr, int phy_reg) -{ - u32 val = MDIO_ACC_REQUEST | MDIO_ACC_READ | - ((phy_addr & MDIO_ACC_ADDR_MASK) << MDIO_ACC_ADDR_OFFSET) | - ((phy_reg & MDIO_ACC_REG_MASK) << MDIO_ACC_REG_OFFSET); - - while (ifxmips_r32(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_REQUEST) - ; - ifxmips_w32(val, IFXMIPS_PPE32_MDIO_ACC); - while (ifxmips_r32(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_REQUEST) - ; - val = ifxmips_r32(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_VAL_MASK; - return val; -} - -int ifxmips_ifxmips_mii_open(struct net_device *dev) -{ - struct ifxmips_mii_priv *priv = (struct ifxmips_mii_priv *)netdev_priv(dev); - struct dma_device_info *dma_dev = priv->dma_device; - int i; - - for (i = 0; i < dma_dev->max_rx_chan_num; i++) { - if ((dma_dev->rx_chan[i])->control == IFXMIPS_DMA_CH_ON) - (dma_dev->rx_chan[i])->open(dma_dev->rx_chan[i]); - } - netif_start_queue(dev); - return 0; -} - -int ifxmips_mii_release(struct net_device *dev) -{ - struct ifxmips_mii_priv *priv = (struct ifxmips_mii_priv *)netdev_priv(dev); - struct dma_device_info *dma_dev = priv->dma_device; - int i; - - for (i = 0; i < dma_dev->max_rx_chan_num; i++) - dma_dev->rx_chan[i]->close(dma_dev->rx_chan[i]); - netif_stop_queue(dev); - return 0; -} - -int ifxmips_mii_hw_receive(struct net_device *dev, struct dma_device_info *dma_dev) -{ - struct ifxmips_mii_priv *priv = (struct ifxmips_mii_priv *)netdev_priv(dev); - unsigned char *buf = NULL; - struct sk_buff *skb = NULL; - int len = 0; - - len = dma_device_read(dma_dev, &buf, (void **)&skb); - - if (len >= ETHERNET_PACKET_DMA_BUFFER_SIZE) { - printk(KERN_INFO "ifxmips_mii0: packet too large %d\n", len); - goto ifxmips_mii_hw_receive_err_exit; - } - - /* remove CRC */ - len -= 4; - if (skb == NULL) { - printk(KERN_INFO "ifxmips_mii0: cannot restore pointer\n"); - goto ifxmips_mii_hw_receive_err_exit; - } - - if (len > (skb->end - skb->tail)) { - printk(KERN_INFO "ifxmips_mii0: BUG, len:%d end:%p tail:%p\n", - (len+4), skb->end, skb->tail); - goto ifxmips_mii_hw_receive_err_exit; - } - - skb_put(skb, len); - skb->dev = dev; - skb->protocol = eth_type_trans(skb, dev); - netif_rx(skb); - - priv->stats.rx_packets++; - priv->stats.rx_bytes += len; - return 0; - -ifxmips_mii_hw_receive_err_exit: - if (len == 0) { - if (skb) - dev_kfree_skb_any(skb); - priv->stats.rx_errors++; - priv->stats.rx_dropped++; - return -EIO; - } else { - return len; - } -} - -int ifxmips_mii_hw_tx(char *buf, int len, struct net_device *dev) -{ - int ret = 0; - struct ifxmips_mii_priv *priv = netdev_priv(dev); - struct dma_device_info *dma_dev = priv->dma_device; - ret = dma_device_write(dma_dev, buf, len, priv->skb); - return ret; -} - -int ifxmips_mii_tx(struct sk_buff *skb, struct net_device *dev) -{ - int len; - char *data; - struct ifxmips_mii_priv *priv = netdev_priv(dev); - struct dma_device_info *dma_dev = priv->dma_device; - - len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len; - data = skb->data; - priv->skb = skb; - dev->trans_start = jiffies; - /* TODO: we got more than 1 dma channel, - so we should do something intelligent here to select one */ - dma_dev->current_tx_chan = 0; - - wmb(); - - if (ifxmips_mii_hw_tx(data, len, dev) != len) { - dev_kfree_skb_any(skb); - priv->stats.tx_errors++; - priv->stats.tx_dropped++; - } else { - priv->stats.tx_packets++; - priv->stats.tx_bytes += len; - } - - return 0; -} - -void ifxmips_mii_tx_timeout(struct net_device *dev) -{ - int i; - struct ifxmips_mii_priv *priv = (struct ifxmips_mii_priv *)netdev_priv(dev); - - priv->stats.tx_errors++; - for (i = 0; i < priv->dma_device->max_tx_chan_num; i++) - priv->dma_device->tx_chan[i]->disable_irq(priv->dma_device->tx_chan[i]); - netif_wake_queue(dev); - return; -} - -int dma_intr_handler(struct dma_device_info *dma_dev, int status) -{ - int i; - - switch (status) { - case RCV_INT: - ifxmips_mii_hw_receive(ifxmips_mii0_dev, dma_dev); - break; - - case TX_BUF_FULL_INT: - printk(KERN_INFO "ifxmips_mii0: tx buffer full\n"); - netif_stop_queue(ifxmips_mii0_dev); - for (i = 0; i < dma_dev->max_tx_chan_num; i++) { - if ((dma_dev->tx_chan[i])->control == IFXMIPS_DMA_CH_ON) - dma_dev->tx_chan[i]->enable_irq(dma_dev->tx_chan[i]); - } - break; - - case TRANSMIT_CPT_INT: - for (i = 0; i < dma_dev->max_tx_chan_num; i++) - dma_dev->tx_chan[i]->disable_irq(dma_dev->tx_chan[i]); - - netif_wake_queue(ifxmips_mii0_dev); - break; - } - - return 0; -} - -unsigned char *ifxmips_etop_dma_buffer_alloc(int len, int *byte_offset, void **opt) -{ - unsigned char *buffer = NULL; - struct sk_buff *skb = NULL; - - skb = dev_alloc_skb(ETHERNET_PACKET_DMA_BUFFER_SIZE); - if (skb == NULL) - return NULL; - - buffer = (unsigned char *)(skb->data); - skb_reserve(skb, 2); - *(int *)opt = (int)skb; - *byte_offset = 2; - - return buffer; -} - -void ifxmips_etop_dma_buffer_free(unsigned char *dataptr, void *opt) -{ - struct sk_buff *skb = NULL; - - if (opt == NULL) { - kfree(dataptr); - } else { - skb = (struct sk_buff *)opt; - dev_kfree_skb_any(skb); - } -} - -static struct net_device_stats *ifxmips_get_stats(struct net_device *dev) -{ - return &((struct ifxmips_mii_priv *)netdev_priv(dev))->stats; -} - -static void -ifxmips_adjust_link(struct net_device *dev) -{ - struct ifxmips_mii_priv *priv = netdev_priv(dev); - struct phy_device *phydev = priv->phydev; - int new_state = 0; - - /* Did anything change? */ - if (priv->oldlink != phydev->link || - priv->oldduplex != phydev->duplex || - priv->oldspeed != phydev->speed) { - /* Yes, so update status and mark as changed */ - new_state = 1; - priv->oldduplex = phydev->duplex; - priv->oldspeed = phydev->speed; - priv->oldlink = phydev->link; - } - - /* If link status changed, show new status */ - if (new_state) - phy_print_status(phydev); -} - -static int mii_probe(struct net_device *dev) -{ - struct ifxmips_mii_priv *priv = netdev_priv(dev); - struct phy_device *phydev = NULL; - int phy_addr; - - priv->oldlink = 0; - priv->oldspeed = 0; - priv->oldduplex = -1; - - /* find the first (lowest address) PHY on the current MAC's MII bus */ - for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { - if (priv->mii_bus->phy_map[phy_addr]) { - phydev = priv->mii_bus->phy_map[phy_addr]; - break; /* break out with first one found */ - } - } - - if (!phydev) { - printk (KERN_ERR "%s: no PHY found\n", dev->name); - return -ENODEV; - } - - /* now we are supposed to have a proper phydev, to attach to... */ - BUG_ON(!phydev); - BUG_ON(phydev->attached_dev); - - phydev = phy_connect(dev, dev_name(&phydev->dev), &ifxmips_adjust_link, - 0, PHY_INTERFACE_MODE_MII); - - if (IS_ERR(phydev)) { - printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name); - return PTR_ERR(phydev); - } - - /* mask with MAC supported features */ - phydev->supported &= (SUPPORTED_10baseT_Half - | SUPPORTED_10baseT_Full - | SUPPORTED_100baseT_Half - | SUPPORTED_100baseT_Full - | SUPPORTED_Autoneg - /* | SUPPORTED_Pause | SUPPORTED_Asym_Pause */ - | SUPPORTED_MII - | SUPPORTED_TP); - - phydev->advertising = phydev->supported; - - priv->phydev = phydev; - - printk(KERN_INFO "%s: attached PHY driver [%s] " - "(mii_bus:phy_addr=%s, irq=%d)\n", - dev->name, phydev->drv->name, dev_name(&phydev->dev), phydev->irq); - - return 0; -} - - -static int ifxmips_mii_dev_init(struct net_device *dev) -{ - int i; - struct ifxmips_mii_priv *priv = (struct ifxmips_mii_priv *)netdev_priv(dev); - ether_setup(dev); - dev->watchdog_timeo = 10 * HZ; - dev->mtu = 1500; - memset(priv, 0, sizeof(struct ifxmips_mii_priv)); - priv->dma_device = dma_device_reserve("PPE"); - if (!priv->dma_device) { - BUG(); - return -ENODEV; - } - priv->dma_device->buffer_alloc = &ifxmips_etop_dma_buffer_alloc; - priv->dma_device->buffer_free = &ifxmips_etop_dma_buffer_free; - priv->dma_device->intr_handler = &dma_intr_handler; - priv->dma_device->max_rx_chan_num = 4; - - for (i = 0; i < priv->dma_device->max_rx_chan_num; i++) { - priv->dma_device->rx_chan[i]->packet_size = ETHERNET_PACKET_DMA_BUFFER_SIZE; - priv->dma_device->rx_chan[i]->control = IFXMIPS_DMA_CH_ON; - } - - for (i = 0; i < priv->dma_device->max_tx_chan_num; i++) - if (i == 0) - priv->dma_device->tx_chan[i]->control = IFXMIPS_DMA_CH_ON; - else - priv->dma_device->tx_chan[i]->control = IFXMIPS_DMA_CH_OFF; - - dma_device_register(priv->dma_device); - - printk(KERN_INFO "%s: using mac=", dev->name); - for (i = 0; i < 6; i++) { - dev->dev_addr[i] = mac_addr[i]; - printk("%02X%c", dev->dev_addr[i], (i == 5) ? ('\n') : (':')); - } - - priv->mii_bus = mdiobus_alloc(); - if (priv->mii_bus == NULL) - return -ENOMEM; - - priv->mii_bus->priv = dev; - priv->mii_bus->read = ifxmips_mdiobus_read; - priv->mii_bus->write = ifxmips_mdiobus_write; - priv->mii_bus->name = "ifxmips_mii"; - snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%x", 0); - priv->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); - for(i = 0; i < PHY_MAX_ADDR; ++i) - priv->mii_bus->irq[i] = PHY_POLL; - - mdiobus_register(priv->mii_bus); - - return mii_probe(dev); -} - -static void ifxmips_mii_chip_init(int mode) -{ - ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_DMA); - ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_PPE); - - if (mode == REV_MII_MODE) - ifxmips_w32_mask(PPE32_MII_MASK, PPE32_MII_REVERSE, IFXMIPS_PPE32_CFG); - else if (mode == MII_MODE) - ifxmips_w32_mask(PPE32_MII_MASK, PPE32_MII_NORMAL, IFXMIPS_PPE32_CFG); - ifxmips_w32(PPE32_PLEN_UNDER | PPE32_PLEN_OVER, IFXMIPS_PPE32_IG_PLEN_CTRL); - ifxmips_w32(PPE32_CGEN, IFXMIPS_PPE32_ENET_MAC_CFG); - wmb(); -} - -static const struct net_device_ops ifxmips_eth_netdev_ops = { - .ndo_init = ifxmips_mii_dev_init, - .ndo_open = ifxmips_ifxmips_mii_open, - .ndo_stop = ifxmips_mii_release, - .ndo_start_xmit = ifxmips_mii_tx, - .ndo_tx_timeout = ifxmips_mii_tx_timeout, - .ndo_change_mtu = eth_change_mtu, - .ndo_set_mac_address = eth_mac_addr, - .ndo_validate_addr = eth_validate_addr, -}; - -static int -ifxmips_mii_probe(struct platform_device *dev) -{ - int result = 0; - unsigned char *mac = (unsigned char *)dev->dev.platform_data; - ifxmips_mii0_dev = alloc_etherdev(sizeof(struct ifxmips_mii_priv)); - ifxmips_mii0_dev->netdev_ops = &ifxmips_eth_netdev_ops; - memcpy(mac_addr, mac, 6); - strcpy(ifxmips_mii0_dev->name, "eth%d"); - ifxmips_mii_chip_init(REV_MII_MODE); - result = register_netdev(ifxmips_mii0_dev); - if (result) { - printk(KERN_INFO "ifxmips_mii0: error %i registering device \"%s\"\n", result, ifxmips_mii0_dev->name); - goto out; - } - - printk(KERN_INFO "ifxmips_mii0: driver loaded!\n"); - -out: - return result; -} - -static int ifxmips_mii_remove(struct platform_device *dev) -{ - struct ifxmips_mii_priv *priv = (struct ifxmips_mii_priv *)netdev_priv(ifxmips_mii0_dev); - - printk(KERN_INFO "ifxmips_mii0: ifxmips_mii0 cleanup\n"); - - dma_device_unregister(priv->dma_device); - dma_device_release(priv->dma_device); - kfree(priv->dma_device); - unregister_netdev(ifxmips_mii0_dev); - return 0; -} - -static struct platform_driver ifxmips_mii_driver = { - .probe = ifxmips_mii_probe, - .remove = ifxmips_mii_remove, - .driver = { - .name = "ifxmips_mii0", - .owner = THIS_MODULE, - }, -}; - -int __init ifxmips_mii_init(void) -{ - int ret = platform_driver_register(&ifxmips_mii_driver); - if (ret) - printk(KERN_INFO "ifxmips_mii0: Error registering platfom driver!"); - return ret; -} - -static void __exit ifxmips_mii_cleanup(void) -{ - platform_driver_unregister(&ifxmips_mii_driver); -} - -module_init(ifxmips_mii_init); -module_exit(ifxmips_mii_cleanup); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("John Crispin <blogic@openwrt.org>"); -MODULE_DESCRIPTION("ethernet driver for IFXMIPS boards"); |