--- /dev/null
+/*
+ * 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.
+ */
+//-----------------------------------------------------------------------
+/*
+ * Description:
+ * Driver for Infineon Amazon 3 port switch
+ */
+//-----------------------------------------------------------------------
+/* Author: Wu Qi Ming[Qi-Ming.Wu@infineon.com]
+ * Created: 7-April-2004
+ */
+//-----------------------------------------------------------------------
+/* History
+ * Changed on: Jun 28, 2004
+ * Changed by: peng.liu@infineon.com
+ * Reason: add hardware flow control (HFC) (CONFIG_NET_HW_FLOWCONTROL)
+ *
+ * Changed on: Apr 6, 2005
+ * Changed by: mars.lin@infineon.com
+ * Reason : supoort port identification
+ */
+
+
+// copyright 2004-2005 infineon.com
+
+// copyright 2007 john crispin <blogic@openwrt.org>
+// copyright 2007 felix fietkau <nbd@openwrt.org>
+// copyright 2009 hauke mehrtens <hauke@hauke-m.de>
+
+
+// TODO
+// port vlan code from bcrm target... the tawainese code was scrapped due to crappyness
+// check all the mmi reg settings and possibly document them better
+// verify the ethtool code
+// remove the while(1) stuff
+// further clean up and rework ... but it works for now
+// check the mode[]=bridge stuff
+// verify that the ethaddr can be set from u-boot
+
+
+#ifndef __KERNEL__
+#define __KERNEL__
+#endif
+
+
+#if defined(CONFIG_MODVERSIONS) && !defined(MODVERSIONS)
+#define MODVERSIONS
+#endif
+
+#if defined(MODVERSIONS) && !defined(__GENKSYMS__)
+#include <linux/modversions.h>
+#endif
+
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/mii.h>
+#include <asm/uaccess.h>
+#include <linux/in.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/skbuff.h>
+#include <linux/in6.h>
+#include <linux/proc_fs.h>
+#include <linux/mm.h>
+#include <linux/ethtool.h>
+#include <asm/checksum.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/amazon/amazon.h>
+#include <asm/amazon/amazon_dma.h>
+#include <asm/amazon/amazon_sw.h>
+
+// how many mii ports are there ?
+#define AMAZON_SW_INT_NO 2
+
+#define ETHERNET_PACKET_DMA_BUFFER_SIZE 1536
+
+/***************************************** Module Parameters *************************************/
+static char mode[] = "bridge";
+module_param_array(mode, charp, NULL, 0);
+
+static int timeout = 1 * HZ;
+module_param(timeout, int, 0);
+
+int switch_init(struct net_device *dev);
+void switch_tx_timeout(struct net_device *dev);
+
+static struct net_device *switch_devs[2];
+
+int add_mac_table_entry(u64 entry_value)
+{
+ int i;
+ u32 data1, data2;
+
+ AMAZON_SW_REG32(AMAZON_SW_ARL_CTL) = ~7;
+
+ for (i = 0; i < 32; i++) {
+ AMAZON_SW_REG32(AMAZON_SW_CPU_ACTL) = 0x80000000 | 0x20 | i;
+ while (AMAZON_SW_REG32(AMAZON_SW_CPU_ACTL) & (0x80000000)) {};
+ data1 = AMAZON_SW_REG32(AMAZON_SW_DATA1);
+ data2 = AMAZON_SW_REG32(AMAZON_SW_DATA2);
+ if ((data1 & (0x00700000)) != 0x00700000)
+ continue;
+ AMAZON_SW_REG32(AMAZON_SW_DATA1) = (u32) (entry_value >> 32);
+ AMAZON_SW_REG32(AMAZON_SW_DATA2) = (u32) entry_value & 0xffffffff;
+ AMAZON_SW_REG32(AMAZON_SW_CPU_ACTL) = 0xc0000020 | i;
+ while (AMAZON_SW_REG32(AMAZON_SW_CPU_ACTL) & (0x80000000)) {};
+ break;
+ }
+ AMAZON_SW_REG32(AMAZON_SW_ARL_CTL) |= 7;
+ if (i >= 32)
+ return -1;
+ return OK;
+}
+
+u64 read_mac_table_entry(int index)
+{
+ u32 data1, data2;
+ u64 value;
+ AMAZON_SW_REG32(AMAZON_SW_CPU_ACTL) = 0x80000000 | 0x20 | index;
+ while (AMAZON_SW_REG32(AMAZON_SW_CPU_ACTL) & (0x80000000)) {};
+ data1 = AMAZON_SW_REG32(AMAZON_SW_DATA1) & 0xffffff;
+ data2 = AMAZON_SW_REG32(AMAZON_SW_DATA2);
+ value = (u64) data1 << 32 | (u64) data2;
+ return value;
+}
+
+int write_mac_table_entry(int index, u64 value)
+{
+ u32 data1, data2;
+ data1 = (u32) (value >> 32);
+ data2 = (u32) value & 0xffffffff;
+ AMAZON_SW_REG32(AMAZON_SW_DATA1) = data1;
+ AMAZON_SW_REG32(AMAZON_SW_DATA2) = data2;
+ AMAZON_SW_REG32(AMAZON_SW_CPU_ACTL) = 0xc0000020 | index;
+ while (AMAZON_SW_REG32(AMAZON_SW_CPU_ACTL) & (0x80000000)) {};
+ return OK;
+}
+
+u32 get_mdio_reg(int phy_addr, int reg_num)
+{
+ u32 value;
+ AMAZON_SW_REG32(AMAZON_SW_MDIO_ACC) = (3 << 30) | ((phy_addr & 0x1f) << 21) | ((reg_num & 0x1f) << 16);
+ while (AMAZON_SW_REG32(AMAZON_SW_MDIO_ACC) & (1 << 31)) {};
+ value = AMAZON_SW_REG32(AMAZON_SW_MDIO_ACC) & 0xffff;
+ return value;
+}
+
+int set_mdio_reg(int phy_addr, int reg_num, u32 value)
+{
+ AMAZON_SW_REG32(AMAZON_SW_MDIO_ACC) = (2 << 30) | ((phy_addr & 0x1f) << 21) | ((reg_num & 0x1f) << 16) | (value & 0xffff);
+ while (AMAZON_SW_REG32(AMAZON_SW_MDIO_ACC) & (1 << 31)) {};
+ return OK;
+}
+
+int auto_negotiate(int phy_addr)
+{
+ u32 value = 0;
+ value = get_mdio_reg(phy_addr, MDIO_BASE_CONTROL_REG);
+ set_mdio_reg(phy_addr, MDIO_BASE_CONTROL_REG, (value | RESTART_AUTO_NEGOTIATION | AUTO_NEGOTIATION_ENABLE | PHY_RESET));
+ return OK;
+}
+
+/*
+ In this version of switch driver, we split the dma channels for the switch.
+ 2 for port0 and 2 for port1. So that we can do internal bridging if necessary.
+ In switch mode, packets coming in from port0 or port1 is able to do Destination
+ address lookup. Packets coming from port0 with destination address of port1 should
+ not go to pmac again. The switch hardware should be able to do the switch in the hard
+ ware level. Packets coming from the pmac should not do the DA look up in that the
+ desination is already known for the kernel. It only needs to go to the correct NIC to
+ find its way out.
+ */
+int amazon_sw_chip_init(void)
+{
+ u32 tmp1;
+ int i = 0;
+
+ /* Aging tick select: 5mins */
+ tmp1 = 0xa0;
+ if (strcmp(mode, "bridge") == 0) {
+ // bridge mode, set militarised mode to 1, no learning!
+ tmp1 |= 0xC00;
+ } else {
+ // enable learning for P0 and P1,
+ tmp1 |= 3;
+ }
+
+ /* unknown broadcast/multicast/unicast to all ports */
+ AMAZON_SW_REG32(AMAZON_SW_UN_DEST) = 0x1ff;
+
+ AMAZON_SW_REG32(AMAZON_SW_ARL_CTL) = tmp1;
+
+ /* OCS:1 set OCS bit, split the two NIC in rx direction EDL:1 (enable DA lookup) */
+#if defined(CONFIG_IFX_NFEXT_AMAZON_SWITCH_PHYPORT) || defined(CONFIG_IFX_NFEXT_AMAZON_SWITCH_PHYPORT_MODULE)
+ AMAZON_SW_REG32(AMAZON_SW_P2_PCTL) = 0x700;
+#else
+ AMAZON_SW_REG32(AMAZON_SW_P2_PCTL) = 0x401;
+#endif
+
+ /* EPC: 1 split the two NIC in tx direction CRC is generated */
+ AMAZON_SW_REG32(AMAZON_SW_P2_CTL) = 0x6;
+
+ // for bi-directional
+ AMAZON_SW_REG32(AMAZON_SW_P0_WM) = 0x14141412;
+ AMAZON_SW_REG32(AMAZON_SW_P1_WM) = 0x14141412;
+ AMAZON_SW_REG32(AMAZON_SW_P2_WM) = 0x28282826;
+ AMAZON_SW_REG32(AMAZON_SW_GBL_WM) = 0x0;
+
+ AMAZON_SW_REG32(AMAZON_CGU_PLL0SR) = (AMAZON_SW_REG32(AMAZON_CGU_PLL0SR)) | 0x58000000;
+ // clock for PHY
+ AMAZON_SW_REG32(AMAZON_CGU_IFCCR) = (AMAZON_SW_REG32(AMAZON_CGU_IFCCR)) | 0x80000004;
+ // enable power for PHY
+ AMAZON_SW_REG32(AMAZON_PMU_PWDCR) = (AMAZON_SW_REG32(AMAZON_PMU_PWDCR)) | AMAZON_PMU_PWDCR_EPHY;
+ // set reverse MII, enable MDIO statemachine
+ AMAZON_SW_REG32(AMAZON_SW_MDIO_CFG) = 0x800027bf;
+ while (1)
+ if (((AMAZON_SW_REG32(AMAZON_SW_MDIO_CFG)) & 0x80000000) == 0)
+ break;
+ AMAZON_SW_REG32(AMAZON_SW_EPHY) = 0xff;
+
+ // auto negotiation
+ AMAZON_SW_REG32(AMAZON_SW_MDIO_ACC) = 0x83e08000;
+ auto_negotiate(0x1f);
+
+ /* enable all ports */
+ AMAZON_SW_REG32(AMAZON_SW_PS_CTL) = 0x7;
+ for (i = 0; i < 32; i++)
+ write_mac_table_entry(i, 1 << 50);
+ return 0;
+}
+
+static unsigned char my_ethaddr[MAX_ADDR_LEN];
+/* need to get the ether addr from u-boot */
+static int __init ethaddr_setup(char *line)
+{
+ char *ep;
+ int i;
+
+ memset(my_ethaddr, 0, MAX_ADDR_LEN);
+ for (i = 0; i < 6; i++) {
+ my_ethaddr[i] = line ? simple_strtoul(line, &ep, 16) : 0;
+ if (line)
+ line = (*ep) ? ep + 1 : ep;
+ }
+ printk(KERN_INFO "amazon_mii0: mac address %2x-%2x-%2x-%2x-%2x-%2x \n", my_ethaddr[0], my_ethaddr[1], my_ethaddr[2], my_ethaddr[3], my_ethaddr[4], my_ethaddr[5]);
+ return 0;
+}
+
+__setup("ethaddr=", ethaddr_setup);
+
+static void open_rx_dma(struct net_device *dev)
+{
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+ struct dma_device_info *dma_dev = priv->dma_device;
+ int i;
+
+ for (i = 0; i < dma_dev->num_rx_chan; i++)
+ dma_dev->rx_chan[i].control = 1;
+ dma_device_update_rx(dma_dev);
+}
+
+#ifdef CONFIG_NET_HW_FLOWCONTROL
+static void close_rx_dma(struct net_device *dev)
+{
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+ struct dma_device_info *dma_dev = priv->dma_device;
+ int i;
+
+ for (i = 0; i < dma_dev->num_rx_chan; i++)
+ dma_dev->rx_chan[i].control = 0;
+ dma_device_update_rx(dma_dev);
+}
+
+void amazon_xon(struct net_device *dev)
+{
+ unsigned long flag;
+ local_irq_save(flag);
+ open_rx_dma(dev);
+ local_irq_restore(flag);
+}
+#endif
+
+int switch_open(struct net_device *dev)
+{
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+ if (!strcmp(dev->name, "eth1")) {
+ priv->mdio_phy_addr = PHY0_ADDR;
+ }
+ open_rx_dma(dev);
+
+#ifdef CONFIG_NET_HW_FLOWCONTROL
+ if ((priv->fc_bit = netdev_register_fc(dev, amazon_xon)) == 0) {
+ printk(KERN_WARNING "amazon_mii0: Hardware Flow Control register fails\n");
+ }
+#endif
+
+ netif_start_queue(dev);
+ return OK;
+}
+
+int switch_release(struct net_device *dev)
+{
+ int i;
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+ struct dma_device_info *dma_dev = priv->dma_device;
+
+ for (i = 0; i < dma_dev->num_tx_chan; i++)
+ dma_dev->tx_chan[i].control = 0;
+ for (i = 0; i < dma_dev->num_rx_chan; i++)
+ dma_dev->rx_chan[i].control = 0;
+
+ dma_device_update(dma_dev);
+
+#ifdef CONFIG_NET_HW_FLOWCONTROL
+ if (priv->fc_bit) {
+ netdev_unregister_fc(priv->fc_bit);
+ }
+#endif
+ netif_stop_queue(dev);
+
+ return OK;
+}
+
+
+void switch_rx(struct net_device *dev, int len, struct sk_buff *skb)
+{
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+#ifdef CONFIG_NET_HW_FLOWCONTROL
+ int mit_sel = 0;
+#endif
+ skb->dev = dev;
+ skb->protocol = eth_type_trans(skb, dev);
+
+#ifdef CONFIG_NET_HW_FLOWCONTROL
+ mit_sel = netif_rx(skb);
+ switch (mit_sel) {
+ case NET_RX_SUCCESS:
+ case NET_RX_CN_LOW:
+ case NET_RX_CN_MOD:
+ break;
+ case NET_RX_CN_HIGH:
+ break;
+ case NET_RX_DROP:
+ if ((priv->fc_bit)
+ && (!test_and_set_bit(priv->fc_bit, &netdev_fc_xoff))) {
+ close_rx_dma(dev);
+ }
+ break;
+ }
+#else
+ netif_rx(skb);
+#endif
+ priv->stats.rx_packets++;
+ priv->stats.rx_bytes += len;
+ return;
+}
+
+int asmlinkage switch_hw_tx(char *buf, int len, struct net_device *dev)
+{
+ struct switch_priv *priv = netdev_priv(dev);
+ struct dma_device_info *dma_dev = priv->dma_device;
+
+ dma_dev->current_tx_chan = 0;
+ return dma_device_write(dma_dev, buf, len, priv->skb);
+}
+
+int asmlinkage switch_tx(struct sk_buff *skb, struct net_device *dev)
+{
+ int len;
+ char *data;
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+
+ len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
+ data = skb->data;
+ priv->skb = skb;
+ dev->trans_start = jiffies;
+
+ if (switch_hw_tx(data, len, dev) != len) {
+ dev_kfree_skb_any(skb);
+ return OK;
+ }
+
+ priv->stats.tx_packets++;
+ priv->stats.tx_bytes += len;
+ return OK;
+}
+
+void switch_tx_timeout(struct net_device *dev)
+{
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+ priv->stats.tx_errors++;
+ netif_wake_queue(dev);
+ return;
+}
+
+void negotiate(struct net_device *dev)
+{
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+ unsigned short data = get_mdio_reg(priv->mdio_phy_addr, MDIO_ADVERTISMENT_REG);
+
+ data &= ~(MDIO_ADVERT_100_HD | MDIO_ADVERT_100_FD | MDIO_ADVERT_10_FD | MDIO_ADVERT_10_HD);
+
+ switch (priv->current_speed_selection) {
+ case 10:
+ if (priv->current_duplex == full)
+ data |= MDIO_ADVERT_10_FD;
+ else if (priv->current_duplex == half)
+ data |= MDIO_ADVERT_10_HD;
+ else
+ data |= MDIO_ADVERT_10_HD | MDIO_ADVERT_10_FD;
+ break;
+
+ case 100:
+ if (priv->current_duplex == full)
+ data |= MDIO_ADVERT_100_FD;
+ else if (priv->current_duplex == half)
+ data |= MDIO_ADVERT_100_HD;
+ else
+ data |= MDIO_ADVERT_100_HD | MDIO_ADVERT_100_FD;
+ break;
+
+ case 0: /* Auto */
+ if (priv->current_duplex == full)
+ data |= MDIO_ADVERT_100_FD | MDIO_ADVERT_10_FD;
+ else if (priv->current_duplex == half)
+ data |= MDIO_ADVERT_100_HD | MDIO_ADVERT_10_HD;
+ else
+ data |= MDIO_ADVERT_100_HD | MDIO_ADVERT_100_FD | MDIO_ADVERT_10_FD | MDIO_ADVERT_10_HD;
+ break;
+
+ default: /* assume autoneg speed and duplex */
+ data |= MDIO_ADVERT_100_HD | MDIO_ADVERT_100_FD | MDIO_ADVERT_10_FD | MDIO_ADVERT_10_HD;
+ }
+
+ set_mdio_reg(priv->mdio_phy_addr, MDIO_ADVERTISMENT_REG, data);
+
+ /* Renegotiate with link partner */
+
+ data = get_mdio_reg(priv->mdio_phy_addr, MDIO_BASE_CONTROL_REG);
+ data |= MDIO_BC_NEGOTIATE;
+
+ set_mdio_reg(priv->mdio_phy_addr, MDIO_BASE_CONTROL_REG, data);
+
+}
+
+
+void set_duplex(struct net_device *dev, enum duplex new_duplex)
+{
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+ if (new_duplex != priv->current_duplex) {
+ priv->current_duplex = new_duplex;
+ negotiate(dev);
+ }
+}
+
+void set_speed(struct net_device *dev, unsigned long speed)
+{
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+ priv->current_speed_selection = speed;
+ negotiate(dev);
+}
+
+static int switch_ethtool_ioctl(struct net_device *dev, struct ifreq *ifr)
+{
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+ struct ethtool_cmd ecmd;
+
+ if (copy_from_user(&ecmd, ifr->ifr_data, sizeof(ecmd)))
+ return -EFAULT;
+
+ switch (ecmd.cmd) {
+ case ETHTOOL_GSET:
+ memset((void *) &ecmd, 0, sizeof(ecmd));
+ ecmd.supported = SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
+ SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
+ ecmd.port = PORT_TP;
+ ecmd.transceiver = XCVR_EXTERNAL;
+ ecmd.phy_address = priv->mdio_phy_addr;
+
+ ecmd.speed = priv->current_speed;
+
+ ecmd.duplex = priv->full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
+
+ ecmd.advertising = ADVERTISED_TP;
+ if (priv->current_duplex == autoneg && priv->current_speed_selection == 0)
+ ecmd.advertising |= ADVERTISED_Autoneg;
+ else {
+ ecmd.advertising |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
+ ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
+ if (priv->current_speed_selection == 10)
+ ecmd.advertising &= ~(ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full);
+ else if (priv->current_speed_selection == 100)
+ ecmd.advertising &= ~(ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full);
+ if (priv->current_duplex == half)
+ ecmd.advertising &= ~(ADVERTISED_10baseT_Full | ADVERTISED_100baseT_Full);
+ else if (priv->current_duplex == full)
+ ecmd.advertising &= ~(ADVERTISED_10baseT_Half | ADVERTISED_100baseT_Half);
+ }
+ ecmd.autoneg = AUTONEG_ENABLE;
+ if (copy_to_user(ifr->ifr_data, &ecmd, sizeof(ecmd)))
+ return -EFAULT;
+ break;
+
+ case ETHTOOL_SSET:
+ if (!capable(CAP_NET_ADMIN)) {
+ return -EPERM;
+ }
+ if (ecmd.autoneg == AUTONEG_ENABLE) {
+ set_duplex(dev, autoneg);
+ set_speed(dev, 0);
+ } else {
+ set_duplex(dev, ecmd.duplex == DUPLEX_HALF ? half : full);
+ set_speed(dev, ecmd.speed == SPEED_10 ? 10 : 100);
+ }
+ break;
+
+ case ETHTOOL_GDRVINFO:
+ {
+ struct ethtool_drvinfo info;
+ memset((void *) &info, 0, sizeof(info));
+ strncpy(info.driver, "AMAZONE", sizeof(info.driver) - 1);
+ strncpy(info.fw_version, "N/A", sizeof(info.fw_version) - 1);
+ strncpy(info.bus_info, "N/A", sizeof(info.bus_info) - 1);
+ info.regdump_len = 0;
+ info.eedump_len = 0;
+ info.testinfo_len = 0;
+ if (copy_to_user(ifr->ifr_data, &info, sizeof(info)))
+ return -EFAULT;
+ }
+ break;
+ case ETHTOOL_NWAY_RST:
+ if (priv->current_duplex == autoneg && priv->current_speed_selection == 0)
+ negotiate(dev);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ break;
+ }
+ return 0;
+}
+
+
+
+int mac_table_tools_ioctl(struct net_device *dev, struct mac_table_req *req)
+{
+ int cmd;
+ int i;
+ cmd = req->cmd;
+ switch (cmd) {
+ case RESET_MAC_TABLE:
+ for (i = 0; i < 32; i++) {
+ write_mac_table_entry(i, 0);
+ }
+ break;
+ case READ_MAC_ENTRY:
+ req->entry_value = read_mac_table_entry(req->index);
+ break;
+ case WRITE_MAC_ENTRY:
+ write_mac_table_entry(req->index, req->entry_value);
+ break;
+ case ADD_MAC_ENTRY:
+ add_mac_table_entry(req->entry_value);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+
+/*
+ the ioctl for the switch driver is developed in the conventional way
+ the control type falls into some basic categories, among them, the
+ SIOCETHTOOL is the traditional eth interface. VLAN_TOOLS and
+ MAC_TABLE_TOOLS are designed specifically for amazon chip. User
+ should be aware of the data structures used in these interfaces.
+*/
+int switch_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct data_req *switch_data_req = (struct data_req *) ifr->ifr_data;
+ struct mac_table_req *switch_mac_table_req;
+ switch (cmd) {
+ case SIOCETHTOOL:
+ switch_ethtool_ioctl(dev, ifr);
+ break;
+ case SIOCGMIIPHY: /* Get PHY address */
+ break;
+ case SIOCGMIIREG: /* Read MII register */
+ break;
+ case SIOCSMIIREG: /* Write MII register */
+ break;
+ case SET_ETH_SPEED_10: /* 10 Mbps */
+ break;
+ case SET_ETH_SPEED_100: /* 100 Mbps */
+ break;
+ case SET_ETH_SPEED_AUTO: /* Auto negotiate speed */
+ break;
+ case SET_ETH_DUPLEX_HALF: /* Half duplex. */
+ break;
+ case SET_ETH_DUPLEX_FULL: /* Full duplex. */
+ break;
+ case SET_ETH_DUPLEX_AUTO: /* Autonegotiate duplex */
+ break;
+ case SET_ETH_REG:
+ AMAZON_SW_REG32(switch_data_req->index) = switch_data_req->value;
+ break;
+ case MAC_TABLE_TOOLS:
+ switch_mac_table_req = (struct mac_table_req *) ifr->ifr_data;
+ mac_table_tools_ioctl(dev, switch_mac_table_req);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+struct net_device_stats *switch_stats(struct net_device *dev)
+{
+ struct switch_priv *priv = (struct switch_priv *) netdev_priv(dev);
+ return &priv->stats;
+}
+
+int switch_change_mtu(struct net_device *dev, int new_mtu)
+{
+ if (new_mtu >= 1516)
+ new_mtu = 1516;
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+int switch_hw_receive(struct net_device *dev, struct dma_device_info *dma_dev)
+{
+ u8 *buf = NULL;
+ int len = 0;
+ struct sk_buff *skb = NULL;
+
+ len = dma_device_read(dma_dev, &buf, (void **) &skb);
+
+ if (len >= 0x600) {
+ printk(KERN_WARNING "amazon_mii0: packet too large %d\n", len);
+ goto switch_hw_receive_err_exit;
+ }
+
+ /* remove CRC */
+ len -= 4;
+ if (skb == NULL) {
+ printk(KERN_WARNING "amazon_mii0: cannot restore pointer\n");
+ goto switch_hw_receive_err_exit;
+ }
+ if (len > (skb->end - skb->tail)) {
+ printk(KERN_WARNING "amazon_mii0: BUG, len:%d end:%p tail:%p\n", (len + 4), skb->end, skb->tail);
+ goto switch_hw_receive_err_exit;
+ }
+ skb_put(skb, len);
+ skb->dev = dev;
+ switch_rx(dev, len, skb);
+ return OK;
+
+ switch_hw_receive_err_exit:
+ if (skb)
+ dev_kfree_skb_any(skb);
+ return -EIO;
+}
+
+int dma_intr_handler(struct dma_device_info *dma_dev, int status)
+{
+ struct net_device *dev;
+
+ dev = dma_dev->priv;
+ switch (status) {
+ case RCV_INT:
+ switch_hw_receive(dev, dma_dev);
+ break;
+ case TX_BUF_FULL_INT:
+ netif_stop_queue(dev);
+ break;
+ case TRANSMIT_CPT_INT:
+ netif_wake_queue(dev);
+ break;
+ }
+ return OK;
+}
+
+/* reserve 2 bytes in front of data pointer*/
+u8 *dma_buffer_alloc(int len, int *byte_offset, void **opt)
+{
+ u8 *buffer = NULL;
+ struct sk_buff *skb = NULL;
+ skb = dev_alloc_skb(ETHERNET_PACKET_DMA_BUFFER_SIZE);
+ if (skb == NULL) {
+ return NULL;
+ }
+ buffer = (u8 *) (skb->data);
+ skb_reserve(skb, 2);
+ *(int *) opt = (int) skb;
+ *byte_offset = 2;
+ return buffer;
+}
+
+int dma_buffer_free(u8 * dataptr, void *opt)
+{
+ struct sk_buff *skb = NULL;
+ if (opt == NULL) {
+ kfree(dataptr);
+ } else {
+ skb = (struct sk_buff *) opt;
+ dev_kfree_skb_any(skb);
+ }
+ return OK;
+}
+
+int init_dma_device(_dma_device_info * dma_dev, struct net_device *dev)
+{
+ int i;
+ int num_tx_chan, num_rx_chan;
+ if (strcmp(dma_dev->device_name, "switch1") == 0) {
+ num_tx_chan = 1;
+ num_rx_chan = 2;
+ } else {
+ num_tx_chan = 1;
+ num_rx_chan = 2;
+ }
+ dma_dev->priv = dev;
+
+ dma_dev->weight = 1;
+ dma_dev->num_tx_chan = num_tx_chan;
+ dma_dev->num_rx_chan = num_rx_chan;
+ dma_dev->ack = 1;
+ dma_dev->tx_burst_len = 4;
+ dma_dev->rx_burst_len = 4;
+ for (i = 0; i < dma_dev->num_tx_chan; i++) {
+ dma_dev->tx_chan[i].weight = QOS_DEFAULT_WGT;
+ dma_dev->tx_chan[i].desc_num = 10;
+ dma_dev->tx_chan[i].packet_size = 0;
+ dma_dev->tx_chan[i].control = 0;
+ }
+ for (i = 0; i < num_rx_chan; i++) {
+ dma_dev->rx_chan[i].weight = QOS_DEFAULT_WGT;
+ dma_dev->rx_chan[i].desc_num = 10;
+ dma_dev->rx_chan[i].packet_size = ETHERNET_PACKET_DMA_BUFFER_SIZE;
+ dma_dev->rx_chan[i].control = 0;
+ }
+ dma_dev->intr_handler = dma_intr_handler;
+ dma_dev->buffer_alloc = dma_buffer_alloc;
+ dma_dev->buffer_free = dma_buffer_free;
+ return 0;
+}
+
+int switch_set_mac_address(struct net_device *dev, void *p)
+{
+ struct sockaddr *addr = p;
+ memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+ return OK;
+}
+
+static const struct net_device_ops amazon_mii_ops = {
+ .ndo_init = switch_init,
+ .ndo_open = switch_open,
+ .ndo_stop = switch_release,
+ .ndo_start_xmit = switch_tx,
+ .ndo_do_ioctl = switch_ioctl,
+ .ndo_get_stats = switch_stats,
+ .ndo_change_mtu = switch_change_mtu,
+ .ndo_set_mac_address = switch_set_mac_address,
+ .ndo_tx_timeout = switch_tx_timeout,
+};
+
+int switch_init(struct net_device *dev)
+{
+ u64 retval = 0;
+ int i;
+ int result;
+ struct switch_priv *priv;
+ ether_setup(dev); /* assign some of the fields */
+ printk(KERN_INFO "amazon_mii0: %s up using ", dev->name);
+ dev->watchdog_timeo = timeout;
+
+ priv = netdev_priv(dev);
+ priv->dma_device = (struct dma_device_info *) kmalloc(sizeof(struct dma_device_info), GFP_KERNEL);
+ if (priv->num == 0) {
+ sprintf(priv->dma_device->device_name, "switch1");
+ } else if (priv->num == 1) {
+ sprintf(priv->dma_device->device_name, "switch2");
+ }
+ printk("\"%s\"\n", priv->dma_device->device_name);
+ init_dma_device(priv->dma_device, dev);
+ result = dma_device_register(priv->dma_device);
+
+ /* read the mac address from the mac table and put them into the mac table. */
+ for (i = 0; i < 6; i++) {
+ retval += my_ethaddr[i];
+ }
+ /* ethaddr not set in u-boot ? */
+ if (retval == 0) {
+ dev->dev_addr[0] = 0x00;
+ dev->dev_addr[1] = 0x20;
+ dev->dev_addr[2] = 0xda;
+ dev->dev_addr[3] = 0x86;
+ dev->dev_addr[4] = 0x23;
+ dev->dev_addr[5] = 0x74 + (unsigned char) priv->num;
+ } else {
+ for (i = 0; i < 6; i++) {
+ dev->dev_addr[i] = my_ethaddr[i];
+ }
+ dev->dev_addr[5] += +(unsigned char) priv->num;
+ }
+ return OK;
+}
+
+static int amazon_mii_probe(struct platform_device *dev)
+{
+ int i = 0, result, device_present = 0;
+ struct switch_priv *priv;
+
+ for (i = 0; i < AMAZON_SW_INT_NO; i++) {
+ switch_devs[i] = alloc_etherdev(sizeof(struct switch_priv));
+ switch_devs[i]->netdev_ops = &amazon_mii_ops;
+ strcpy(switch_devs[i]->name, "eth%d");
+ priv = (struct switch_priv *) netdev_priv(switch_devs[i]);
+ priv->num = i;
+ if ((result = register_netdev(switch_devs[i])))
+ printk(KERN_WARNING "amazon_mii0: error %i registering device \"%s\"\n", result, switch_devs[i]->name);
+ else
+ device_present++;
+ }
+ amazon_sw_chip_init();
+ return device_present ? 0 : -ENODEV;
+}
+
+static int amazon_mii_remove(struct platform_device *dev)
+{
+ int i;
+ struct switch_priv *priv;
+ for (i = 0; i < AMAZON_SW_INT_NO; i++) {
+ priv = netdev_priv(switch_devs[i]);
+ if (priv->dma_device) {
+ dma_device_unregister(priv->dma_device);
+ kfree(priv->dma_device);
+ }
+ kfree(netdev_priv(switch_devs[i]));
+ unregister_netdev(switch_devs[i]);
+ }
+ return 0;
+}
+
+static struct platform_driver amazon_mii_driver = {
+ .probe = amazon_mii_probe,
+ .remove = amazon_mii_remove,
+ .driver = {
+ .name = "amazon_mii0",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init amazon_mii_init(void)
+{
+ int ret = platform_driver_register(&amazon_mii_driver);
+ if (ret)
+ printk(KERN_WARNING "amazon_mii0: Error registering platfom driver!\n");
+ return ret;
+}
+
+static void __exit amazon_mii_cleanup(void)
+{
+ platform_driver_unregister(&amazon_mii_driver);
+}
+
+module_init(amazon_mii_init);
+module_exit(amazon_mii_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Wu Qi Ming");
+MODULE_DESCRIPTION("ethernet driver for AMAZON boards");
+
projects / openwrt / svn-archive / archive.git / blobdiff