diff options
Diffstat (limited to 'target/linux/lantiq/files/drivers/net/ethernet/svip_eth.c')
| -rw-r--r-- | target/linux/lantiq/files/drivers/net/ethernet/svip_eth.c | 636 |
1 files changed, 0 insertions, 636 deletions
diff --git a/target/linux/lantiq/files/drivers/net/ethernet/svip_eth.c b/target/linux/lantiq/files/drivers/net/ethernet/svip_eth.c deleted file mode 100644 index 1e25795a2a..0000000000 --- a/target/linux/lantiq/files/drivers/net/ethernet/svip_eth.c +++ /dev/null @@ -1,636 +0,0 @@ -/************************************************************************ - * - * Copyright (c) 2005 - * Infineon Technologies AG - * St. Martin Strasse 53; 81669 Muenchen; Germany - * - * 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/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/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/module.h> -#include <linux/delay.h> -#include <asm/checksum.h> - -#if 1 /** TODO: MOVE TO APPROPRIATE PLACE */ - -#define ETHERNET_PACKET_DMA_BUFFER_SIZE 0x600 -#define REV_MII_MODE 2 - -#endif - -#define DRV_NAME "ifxmips_mii0" - -#include <lantiq_soc.h> -#include <svip_dma.h> - -#ifdef CONFIG_DEBUG_MINI_BOOT -#define IKOS_MINI_BOOT -#endif - -/* debugging */ -#undef INCAIP2_SW_DUMP - -#define INCAIP2_SW_EMSG(fmt,args...) printk("%s: " fmt, __FUNCTION__ , ##args) - -#define INCAIP2_SW_CHIP_NO 1 -#define INCAIP2_SW_CHIP_ID 0 -#define INCAIP2_SW_DEVICE_NO 1 - -#ifdef INCAIP2_SW_DEBUG_MSG -#define INCAIP2_SW_DMSG(fmt,args...) printk("%s: " fmt, __FUNCTION__ , ##args) -#else -#define INCAIP2_SW_DMSG(fmt,args...) -#endif - -/************************** Module Parameters *****************************/ -static char *mode = "bridge"; -module_param(mode, charp, 0000); -MODULE_PARM_DESC(mode, "<description>"); - -#ifdef HAVE_TX_TIMEOUT -static int timeout = 10*HZ; -module_param(timeout, int, 0); -MODULE_PARM_DESC(timeout, "Transmission watchdog timeout in seconds>"); -#endif - -#ifdef IKOS_MINI_BOOT -#ifdef CONFIG_INCAIP2 -extern s32 incaip2_sw_to_mbx(struct sk_buff* skb); -#endif -extern s32 svip_sw_to_mbx(struct sk_buff* skb); -#endif - -struct svip_mii_priv { - struct net_device_stats stats; - struct dma_device_info *dma_device; - struct sk_buff *skb; -}; - -static struct net_device *svip_mii0_dev; -static unsigned char mac_addr[MAX_ADDR_LEN]; -static unsigned char my_ethaddr[MAX_ADDR_LEN]; - -/** - * Initialize MAC address. - * This function copies the ethernet address from kernel command line. - * - * \param line Pointer to parameter - * \return 0 OK - * \ingroup Internal - */ -static int __init svip_eth_ethaddr_setup(char *line) -{ - char *ep; - int i; - - memset(my_ethaddr, 0, MAX_ADDR_LEN); - /* there should really be routines to do this stuff */ - for (i = 0; i < 6; i++) - { - my_ethaddr[i] = line ? simple_strtoul(line, &ep, 16) : 0; - if (line) - line = (*ep) ? ep+1 : ep; - } - INCAIP2_SW_DMSG("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=", svip_eth_ethaddr_setup); - - -/** - * Open RX DMA channels. - * This function opens all DMA rx channels. - * - * \param dma_dev pointer to DMA device information - * \ingroup Internal - */ -static void svip_eth_open_rx_dma(struct dma_device_info *dma_dev) -{ - int i; - - for(i=0; i<dma_dev->num_rx_chan; i++) - { - dma_dev->rx_chan[i]->open(dma_dev->rx_chan[i]); - } -} - - -/** - * Open TX DMA channels. - * This function opens all DMA tx channels. - * - * \param dev pointer to net device structure that comprises - * DMA device information pointed to by it's priv field. - * \ingroup Internal - */ -static void svip_eth_open_tx_dma(struct dma_device_info *dma_dev) -{ - int i; - - for (i=0; i<dma_dev->num_tx_chan; i++) - { - dma_dev->tx_chan[i]->open(dma_dev->tx_chan[i]); - } -} - - -#ifdef CONFIG_NET_HW_FLOWCONTROL -/** - * Enable receiving DMA. - * This function enables the receiving DMA channel. - * - * \param dev pointer to net device structure that comprises - * DMA device information pointed to by it's priv field. - * \ingroup Internal - */ -void svip_eth_xon(struct net_device *dev) -{ - struct switch_priv *sw_dev = (struct switch_priv *)dev->priv; - struct dma_device_info* dma_dev = - (struct dma_device_info *)sw_dev->dma_device; - unsigned long flag; - - local_irq_save(flag); - - INCAIP2_SW_DMSG("wakeup\n"); - svip_eth_open_rx_dma(dma_dev); - - local_irq_restore(flag); -} -#endif /* CONFIG_NET_HW_FLOWCONTROL */ - - -/** - * Open network device. - * This functions opens the network device and starts the interface queue. - * - * \param dev Device structure for Ethernet device - * \return 0 OK, device opened - * \return -1 Error, registering DMA device - * \ingroup API - */ -int svip_mii_open(struct net_device *dev) -{ - struct svip_mii_priv *priv = netdev_priv(dev); - struct dma_device_info *dma_dev = priv->dma_device; - - svip_eth_open_rx_dma(dma_dev); - svip_eth_open_tx_dma(dma_dev); - - netif_start_queue(dev); - return 0; -} - - -/** - * Close network device. - * This functions closes the network device, which will also stop the interface - * queue. - * - * \param dev Device structure for Ethernet device - * \return 0 OK, device closed (cannot fail) - * \ingroup API - */ -int svip_mii_release(struct net_device *dev) -{ - struct svip_mii_priv *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; -} - - -/** - * Read data from DMA device. - * This function reads data from the DMA device. The function is called by - * the switch/DMA pseudo interrupt handler dma_intr_handler on occurence of - * a DMA receive interrupt. - * - * \param dev Pointer to network device structure - * \param dma_dev Pointer to dma device structure - * \return OK In case of successful data reception from dma - * -EIO Incorrect opt pointer provided by device - * \ingroup Internal - */ -int svip_mii_hw_receive(struct net_device *dev, struct dma_device_info *dma_dev) -{ - struct svip_mii_priv *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 DRV_NAME ": packet too large %d\n", len); - goto mii_hw_receive_err_exit; - } - - if (skb == NULL) { - printk(KERN_INFO DRV_NAME ": cannot restore pointer\n"); - goto mii_hw_receive_err_exit; - } - - if (len > (skb->end - skb->tail)) { - printk(KERN_INFO DRV_NAME ": BUG, len:%d end:%p tail:%p\n", - len, skb->end, skb->tail); - goto 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; - -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; - } -} - - -/** - * Write data to Ethernet switch. - * This function writes the data comprised in skb structure via DMA to the - * Ethernet Switch. It is installed as the switch driver's hard_start_xmit - * method. - * - * \param skb Pointer to socket buffer structure that contains the data - * to be sent - * \param dev Pointer to network device structure which is used for - * data transmission - * \return 1 Transmission error - * \return 0 OK, successful data transmission - * \ingroup API - */ -static int svip_mii_hw_tx(char *buf, int len, struct net_device *dev) -{ - int ret = 0; - struct svip_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; -} - -static int svip_mii_tx(struct sk_buff *skb, struct net_device *dev) -{ - int len; - char *data; - struct svip_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 (svip_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; -} - - -/** - * Transmission timeout callback. - * This functions is called when a trasmission timeout occurs. It will wake up - * the interface queue again. - * - * \param dev Device structure for Ethernet device - * \ingroup API - */ -void svip_mii_tx_timeout(struct net_device *dev) -{ - int i; - struct svip_mii_priv *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; -} - - -/** - * Get device statistics. - * This functions returns the device statistics, stored in the device structure. - * - * \param dev Device structure for Ethernet device - * \return stats Pointer to statistics structure - * \ingroup API - */ -static struct net_device_stats *svip_get_stats(struct net_device *dev) -{ - struct svip_mii_priv *priv = netdev_priv(dev); - return &priv->stats; -} - - -/** - * Pseudo Interrupt handler for DMA. - * This function processes DMA interrupts notified to the switch device driver. - * The function is installed at the DMA core as interrupt handler for the - * switch dma device. - * It handles the following DMA interrupts: - * passes received data to the upper layer in case of rx interrupt, - * In case of a dma receive interrupt the received data is passed to the upper layer. - * In case of a transmit buffer full interrupt the transmit queue is stopped. - * In case of a transmission complete interrupt the transmit queue is restarted. - * - * \param dma_dev pointer to dma device structure - * \param status type of interrupt being notified (RCV_INT: dma receive - * interrupt, TX_BUF_FULL_INT: transmit buffer full interrupt, - * TRANSMIT_CPT_INT: transmission complete interrupt) - * \return OK In case of successful data reception from dma - * \ingroup Internal - */ -int dma_intr_handler(struct dma_device_info *dma_dev, int status) -{ - int i; - - switch (status) { - case RCV_INT: - svip_mii_hw_receive(svip_mii0_dev, dma_dev); - break; - - case TX_BUF_FULL_INT: - printk(KERN_INFO DRV_NAME ": tx buffer full\n"); - netif_stop_queue(svip_mii0_dev); - for (i = 0; i < dma_dev->max_tx_chan_num; i++) { - if ((dma_dev->tx_chan[i])->control == LTQ_DMA_CH_ON) - dma_dev->tx_chan[i]->enable_irq(dma_dev->tx_chan[i]); - } - break; - - case TRANSMIT_CPT_INT: - -#if 0 - for (i = 0; i < dma_dev->max_tx_chan_num; i++) -#if 0 - dma_dev->tx_chan[i]->disable_irq(dma_dev->tx_chan[i]); -#else - dma_dev->tx_chan[i]->disable_irq(dma_dev->tx_chan[i], (char *)__FUNCTION__); -#endif - netif_wake_queue(svip_mii0_dev); -#endif - break; - } - - return 0; -} - - -/** - * Allocates buffer sufficient for Ethernet Frame. - * This function is installed as DMA callback function to be called on DMA - * receive interrupt. - * - * \param len Unused - * \param *byte_offset Pointer to byte offset - * \param **opt pointer to skb structure - * \return NULL In case of buffer allocation fails - * buffer Pointer to allocated memory - * \ingroup Internal - */ -unsigned char *svip_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; -} - - -/** - * Free DMA buffer. - * This function frees a buffer, which can be either a data buffer or an - * skb structure. - * - * \param *dataptr Pointer to data buffer - * \param *opt Pointer to skb structure - * \return 0 OK - * \ingroup Internal - */ -void svip_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 int svip_mii_dev_init(struct net_device *dev); - -static const struct net_device_ops svip_eth_netdev_ops = { - .ndo_init = svip_mii_dev_init, - .ndo_open = svip_mii_open, - .ndo_stop = svip_mii_release, - .ndo_start_xmit = svip_mii_tx, - .ndo_get_stats = svip_get_stats, - .ndo_tx_timeout = svip_mii_tx_timeout, -}; - -//#include <linux/device.h> - -/** - * Initialize switch driver. - * This functions initializes the switch driver structures and registers the - * Ethernet device. - * - * \param dev Device structure for Ethernet device - * \return 0 OK - * \return ENOMEM No memory for structures available - * \return -1 Error during DMA init or Ethernet address configuration. - * \ingroup API - */ -static int svip_mii_dev_init(struct net_device *dev) -{ - int i; - struct svip_mii_priv *priv = netdev_priv(dev); - - - ether_setup(dev); - printk(KERN_INFO DRV_NAME ": %s is up\n", dev->name); - dev->watchdog_timeo = 10 * HZ; - memset(priv, 0, sizeof(*priv)); - priv->dma_device = dma_device_reserve("SW"); - if (!priv->dma_device) { - BUG(); - return -ENODEV; - } - priv->dma_device->buffer_alloc = svip_etop_dma_buffer_alloc; - priv->dma_device->buffer_free = svip_etop_dma_buffer_free; - priv->dma_device->intr_handler = dma_intr_handler; - - 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; - - for (i = 0; i < priv->dma_device->max_tx_chan_num; i++) { - priv->dma_device->tx_chan[i]->tx_weight=DEFAULT_SW_CHANNEL_WEIGHT; - priv->dma_device->tx_chan[i]->packet_size = - ETHERNET_PACKET_DMA_BUFFER_SIZE; - } - - dma_device_register(priv->dma_device); - - printk(KERN_INFO DRV_NAME ": 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') : (':')); - } - - return 0; -} - -static void svip_mii_chip_init(int mode) -{ -} - -static int svip_mii_probe(struct platform_device *dev) -{ - int result = 0; - unsigned char *mac = (unsigned char *)dev->dev.platform_data; - svip_mii0_dev = alloc_etherdev(sizeof(struct svip_mii_priv)); - svip_mii0_dev->netdev_ops = &svip_eth_netdev_ops; - memcpy(mac_addr, mac, 6); - strcpy(svip_mii0_dev->name, "eth%d"); - svip_mii_chip_init(REV_MII_MODE); - result = register_netdev(svip_mii0_dev); - if (result) { - printk(KERN_INFO DRV_NAME - ": error %i registering device \"%s\"\n", - result, svip_mii0_dev->name); - goto out; - } - printk(KERN_INFO DRV_NAME ": driver loaded!\n"); - -out: - return result; -} - -static int svip_mii_remove(struct platform_device *dev) -{ - struct svip_mii_priv *priv = netdev_priv(svip_mii0_dev); - - printk(KERN_INFO DRV_NAME ": cleanup\n"); - - dma_device_unregister(priv->dma_device); - dma_device_release(priv->dma_device); - kfree(priv->dma_device); - unregister_netdev(svip_mii0_dev); - free_netdev(svip_mii0_dev); - return 0; -} - - -static struct platform_driver svip_mii_driver = { - .probe = svip_mii_probe, - .remove = svip_mii_remove, - .driver = { - .name = DRV_NAME, - .owner = THIS_MODULE, - }, -}; - - -/** - * Initialize switch driver as module. - * This functions initializes the switch driver structures and registers the - * Ethernet device for module usage. - * - * \return 0 OK - * \return ENODEV An error occured during initialization - * \ingroup API - */ -int __init svip_mii_init(void) -{ - int ret = platform_driver_register(&svip_mii_driver); - if (ret) - printk(KERN_INFO DRV_NAME - ": Error registering platfom driver!\n"); - return ret; -} - - -/** - * Remove driver module. - * This functions removes the driver and unregisters all devices. - * - * \ingroup API - */ -static void __exit svip_mii_cleanup(void) -{ - platform_driver_unregister(&svip_mii_driver); -} - -module_init(svip_mii_init); -module_exit(svip_mii_cleanup); - -MODULE_LICENSE("GPL"); |