X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/20abafaaf5fdb4dd7cb1e09a028b1c2c689557b7..cc7c03a97022c627dac8e4aefb415081722119a5:/target/linux/ifxmips/files/drivers/net/ifxmips_mii0.c diff --git a/target/linux/ifxmips/files/drivers/net/ifxmips_mii0.c b/target/linux/ifxmips/files/drivers/net/ifxmips_mii0.c index 50478bfe0..1185a1537 100644 --- a/target/linux/ifxmips/files/drivers/net/ifxmips_mii0.c +++ b/target/linux/ifxmips/files/drivers/net/ifxmips_mii0.c @@ -1,6 +1,4 @@ /* - * 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 @@ -15,13 +13,8 @@ * 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 - * + * Copyright (C) 2005 Wu Qi Ming + * Copyright (C) 2008 John Crispin */ #include @@ -29,7 +22,7 @@ #include #include #include -#include +#include #include #include #include @@ -37,104 +30,104 @@ #include #include #include +#include #include -#include #include -#include +#include +#include #include -#include #include #include -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 *)dev->priv; + 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 *)dev->priv; + 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 *)dev->priv; + 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); @@ -144,101 +137,84 @@ switch_hw_receive (struct net_device* dev,struct dma_device_info* dma_dev) 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 = dev->priv; + 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 = dev->priv; + 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 *)dev->priv; 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; @@ -247,15 +223,14 @@ dma_intr_handler (struct dma_device_info* dma_dev, int status) 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; @@ -264,170 +239,152 @@ ifxmips_etop_dma_buffer_alloc (int len, int *byte_offset, void **opt) 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; } -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; 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)); + memset(dev->priv, 0, sizeof(struct ifxmips_mii_priv)); priv = dev->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 *)ifxmips_mii0_dev->priv; - 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); + kfree(ifxmips_mii0_dev->priv); + 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 "); +MODULE_DESCRIPTION("ethernet map driver for IFXMIPS boards"); +