/*
- * drivers/net/ifxmips_mii0.c
- *
* 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
* 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 Infineon
- *
- * Rewrite of Infineon IFXMips code, thanks to infineon for the support,
- * software and hardware
- *
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- *
+ * 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/errno.h>
#include <linux/types.h>
#include <linux/interrupt.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <linux/in.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/tcp.h>
#include <linux/skbuff.h>
#include <linux/mm.h>
+#include <linux/platform_device.h>
#include <linux/ethtool.h>
-#include <asm/checksum.h>
#include <linux/init.h>
-#include <asm/delay.h>
+#include <linux/delay.h>
+#include <asm/checksum.h>
#include <asm/ifxmips/ifxmips.h>
-#include <asm/ifxmips/ifxmips_mii0.h>
#include <asm/ifxmips/ifxmips_dma.h>
#include <asm/ifxmips/ifxmips_pmu.h>
-static struct net_device ifxmips_mii0_dev;
-static unsigned char u_boot_ethaddr[MAX_ADDR_LEN];
+struct ifxmips_mii_priv {
+ struct net_device_stats stats;
+ struct dma_device_info *dma_device;
+ struct sk_buff *skb;
+};
+
+static struct net_device *ifxmips_mii0_dev;
+static unsigned char mac_addr[MAX_ADDR_LEN];
-void
-ifxmips_write_mdio (u32 phy_addr, u32 phy_reg, u16 phy_data)
+void ifxmips_write_mdio(u32 phy_addr, u32 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 (readl(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_REQUEST);
- writel(val, IFXMIPS_PPE32_MDIO_ACC);
+ while (ifxmips_r32(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_REQUEST)
+ ;
+ ifxmips_w32(val, IFXMIPS_PPE32_MDIO_ACC);
}
+EXPORT_SYMBOL(ifxmips_write_mdio);
-unsigned short
-ifxmips_read_mdio (u32 phy_addr, u32 phy_reg)
+unsigned short ifxmips_read_mdio(u32 phy_addr, u32 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);
- writel(val, IFXMIPS_PPE32_MDIO_ACC);
- while (readl(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_REQUEST){};
- val = readl(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_VAL_MASK;
-
+ 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;
}
+EXPORT_SYMBOL(ifxmips_read_mdio);
-int
-ifxmips_switch_open (struct net_device *dev)
+int ifxmips_ifxmips_mii_open(struct net_device *dev)
{
- struct switch_priv* priv = (struct switch_priv*)dev->priv;
- struct dma_device_info* dma_dev = priv->dma_device;
+ 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++)
- {
+ 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
-switch_release (struct net_device *dev){
- struct switch_priv* priv = (struct switch_priv*)dev->priv;
- struct dma_device_info* dma_dev = priv->dma_device;
+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
-switch_hw_receive (struct net_device* dev,struct dma_device_info* dma_dev)
+int ifxmips_mii_hw_receive(struct net_device *dev, struct dma_device_info *dma_dev)
{
- struct switch_priv *priv = (struct switch_priv*)dev->priv;
- unsigned char* buf = NULL;
+ 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);
+ len = dma_device_read(dma_dev, &buf, (void **)&skb);
- if (len >= ETHERNET_PACKET_DMA_BUFFER_SIZE)
- {
- printk("packet too large %d\n",len);
- goto switch_hw_receive_err_exit;
+ 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("cannot restore pointer\n");
- goto switch_hw_receive_err_exit;
+ 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("BUG, len:%d end:%p tail:%p\n", (len+4), skb->end, skb->tail);
- goto switch_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);
priv->stats.rx_packets++;
priv->stats.rx_bytes += len;
-
return 0;
-switch_hw_receive_err_exit:
- if (len == 0)
- {
- if(skb)
+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
-switch_hw_tx (char *buf, int len, struct net_device *dev)
+int ifxmips_mii_hw_tx(char *buf, int len, struct net_device *dev)
{
int ret = 0;
- struct switch_priv *priv = dev->priv;
- struct dma_device_info* dma_dev = priv->dma_device;
-
+ 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
-switch_tx (struct sk_buff *skb, struct net_device *dev)
+int ifxmips_mii_tx(struct sk_buff *skb, struct net_device *dev)
{
int len;
char *data;
- struct switch_priv *priv = dev->priv;
- struct dma_device_info* dma_dev = priv->dma_device;
+ 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
+ /* 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 (switch_hw_tx(data, len, dev) != len)
- {
+ 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;
+ priv->stats.tx_bytes += len;
}
return 0;
}
-void
-switch_tx_timeout (struct net_device *dev)
+void ifxmips_mii_tx_timeout(struct net_device *dev)
{
int i;
- struct switch_priv* priv = (struct switch_priv*)dev->priv;
+ 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 dma_intr_handler(struct dma_device_info *dma_dev, int status)
{
int i;
- switch (status)
- {
+ switch (status) {
case RCV_INT:
- switch_hw_receive(&ifxmips_mii0_dev, dma_dev);
+ ifxmips_mii_hw_receive(ifxmips_mii0_dev, dma_dev);
break;
case TX_BUF_FULL_INT:
- printk("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)
+ 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;
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);
+ 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 *ifxmips_etop_dma_buffer_alloc(int len, int *byte_offset, void **opt)
{
unsigned char *buffer = NULL;
struct sk_buff *skb = NULL;
if (skb == NULL)
return NULL;
- buffer = (unsigned char*)(skb->data);
+ buffer = (unsigned char *)(skb->data);
skb_reserve(skb, 2);
- *(int*)opt = (int)skb;
+ *(int *)opt = (int)skb;
*byte_offset = 2;
return buffer;
}
-void
-ifxmips_etop_dma_buffer_free (unsigned char *dataptr, void *opt)
+void ifxmips_etop_dma_buffer_free(unsigned char *dataptr, void *opt)
{
struct sk_buff *skb = NULL;
- if(opt == NULL)
- {
+ if (opt == NULL) {
kfree(dataptr);
} else {
- skb = (struct sk_buff*)opt;
+ skb = (struct sk_buff *)opt;
dev_kfree_skb_any(skb);
}
}
-static struct net_device_stats*
-ifxmips_get_stats (struct net_device *dev)
+static struct net_device_stats *ifxmips_get_stats(struct net_device *dev)
{
- return (struct net_device_stats *)dev->priv;
+ return &((struct ifxmips_mii_priv *)netdev_priv(dev))->stats;
}
-static int
-switch_init (struct net_device *dev)
+static int ifxmips_mii_dev_init(struct net_device *dev)
{
- u64 retval = 0;
int i;
- struct switch_priv *priv;
-
+ struct ifxmips_mii_priv *priv = (struct ifxmips_mii_priv *)netdev_priv(dev);
ether_setup(dev);
-
- printk("%s up\n", dev->name);
-
- dev->open = ifxmips_switch_open;
- dev->stop = switch_release;
- dev->hard_start_xmit = switch_tx;
+ printk(KERN_INFO "ifxmips_mii0: %s is up\n", dev->name);
+ dev->open = ifxmips_ifxmips_mii_open;
+ dev->stop = ifxmips_mii_release;
+ dev->hard_start_xmit = ifxmips_mii_tx;
dev->get_stats = ifxmips_get_stats;
- dev->tx_timeout = switch_tx_timeout;
+ dev->tx_timeout = ifxmips_mii_tx_timeout;
dev->watchdog_timeo = 10 * HZ;
- dev->priv = kmalloc(sizeof(struct switch_priv), GFP_KERNEL);
-
- if (dev->priv == NULL)
- return -ENOMEM;
-
- memset(dev->priv, 0, sizeof(struct switch_priv));
- priv = dev->priv;
-
+ memset(priv, 0, sizeof(struct ifxmips_mii_priv));
priv->dma_device = dma_device_reserve("PPE");
-
- if (!priv->dma_device){
+ 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++)
- {
+ 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)
+ 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);
- /*read the mac address from the mac table and put them into the mac table.*/
- for (i = 0; i < 6; i++)
- {
- retval += u_boot_ethaddr[i];
+ printk(KERN_INFO "ifxmips_mii0: using mac=");
+ for (i = 0; i < 6; i++) {
+ dev->dev_addr[i] = mac_addr[i];
+ printk("%02X%c", dev->dev_addr[i], (i == 5) ? ('\n') : (':'));
}
-
- //TODO
- /* ethaddr not set in u-boot ? */
- if (retval == 0)
- {
- printk("use default MAC address\n");
- dev->dev_addr[0] = 0x00;
- dev->dev_addr[1] = 0x11;
- dev->dev_addr[2] = 0x22;
- dev->dev_addr[3] = 0x33;
- dev->dev_addr[4] = 0x44;
- dev->dev_addr[5] = 0x55;
- } else {
- for (i = 0; i < 6; i++)
- dev->dev_addr[i] = u_boot_ethaddr[i];
- }
-
return 0;
}
-static void
-ifxmips_sw_chip_init (int mode)
+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)
- writel((readl(IFXMIPS_PPE32_CFG) & PPE32_MII_MASK) | PPE32_MII_REVERSE, IFXMIPS_PPE32_CFG);
- else if(mode == MII_MODE)
- writel((readl(IFXMIPS_PPE32_CFG) & PPE32_MII_MASK) | PPE32_MII_NORMAL, IFXMIPS_PPE32_CFG);
-
- writel(PPE32_PLEN_UNDER | PPE32_PLEN_OVER, IFXMIPS_PPE32_IG_PLEN_CTRL);
-
- writel(PPE32_CGEN, IFXMIPS_PPE32_ENET_MAC_CFG);
-
+ 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();
}
-int __init
-switch_init_module(void)
+static int ifxmips_mii_probe(struct platform_device *dev)
{
int result = 0;
-
- ifxmips_mii0_dev.init = switch_init;
-
- strcpy(ifxmips_mii0_dev.name, "eth%d");
- SET_MODULE_OWNER(dev);
-
- result = register_netdev(&ifxmips_mii0_dev);
- if (result)
- {
- printk("error %i registering device \"%s\"\n", result, ifxmips_mii0_dev.name);
+ unsigned char *mac = (unsigned char *)dev->dev.platform_data;
+ ifxmips_mii0_dev = alloc_etherdev(sizeof(struct ifxmips_mii_priv));
+ ifxmips_mii0_dev->init = ifxmips_mii_dev_init;
+ 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;
}
- /* ifxmips eval kit connects the phy/switch in REV mode */
- ifxmips_sw_chip_init(REV_MII_MODE);
- printk("ifxmips MAC driver loaded!\n");
+ printk(KERN_INFO "ifxmips_mii0: driver loaded!\n");
out:
return result;
}
-static void __exit
-switch_cleanup(void)
+static int ifxmips_mii_remove(struct platform_device *dev)
{
- struct switch_priv *priv = (struct switch_priv*)ifxmips_mii0_dev.priv;
+ struct ifxmips_mii_priv *priv = (struct ifxmips_mii_priv *)netdev_priv(ifxmips_mii0_dev);
- printk("ifxmips_mii0 cleanup\n");
+ 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);
- kfree(ifxmips_mii0_dev.priv);
- unregister_netdev(&ifxmips_mii0_dev);
+ unregister_netdev(ifxmips_mii0_dev);
+ return 0;
+}
- return;
+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(switch_init_module);
-module_exit(switch_cleanup);
+module_init(ifxmips_mii_init);
+module_exit(ifxmips_mii_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
+MODULE_DESCRIPTION("ethernet map driver for IFXMIPS boards");
+
projects / openwrt / openwrt.git / blobdiff