X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/7e80accf90c60efd79f3d1c623877ff332b361d0..49b34728f956238c5fdbec568be0247fb8be95c6:/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 5764b449f..fafb5a52f 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 @@ -39,49 +32,54 @@ #include #include #include -#include #include -#include +#include +#include #include -#include #include #include -#define DRVNAME "ifxmips_mii0" +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 u_boot_ethaddr[MAX_ADDR_LEN]; +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) +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) +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) +ifxmips_ifxmips_mii_open(struct net_device *dev) { - struct switch_priv* priv = (struct switch_priv*)dev->priv; + struct ifxmips_mii_priv* priv = (struct ifxmips_mii_priv*)dev->priv; struct dma_device_info* dma_dev = priv->dma_device; int i; @@ -90,30 +88,26 @@ ifxmips_switch_open (struct net_device *dev) 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; +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) +ifxmips_mii_hw_receive(struct net_device* dev,struct dma_device_info* dma_dev) { - struct switch_priv *priv = (struct switch_priv*)dev->priv; + struct ifxmips_mii_priv *priv = (struct ifxmips_mii_priv*)dev->priv; unsigned char* buf = NULL; struct sk_buff *skb = NULL; int len = 0; @@ -122,22 +116,23 @@ switch_hw_receive (struct net_device* dev,struct dma_device_info* dma_dev) if (len >= ETHERNET_PACKET_DMA_BUFFER_SIZE) { - printk(KERN_INFO DRVNAME ": packet too large %d\n",len); - goto switch_hw_receive_err_exit; + 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 ) + if (skb == NULL) { - printk(KERN_INFO DRVNAME ": cannot restore pointer\n"); - goto switch_hw_receive_err_exit; + 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 DRVNAME ": BUG, len:%d end:%p tail:%p\n", (len+4), skb->end, skb->tail); - goto switch_hw_receive_err_exit; + 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); @@ -147,17 +142,15 @@ 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: +ifxmips_mii_hw_receive_err_exit: if (len == 0) { - if(skb) + if (skb) dev_kfree_skb_any(skb); priv->stats.rx_errors++; priv->stats.rx_dropped++; - return -EIO; } else { return len; @@ -165,23 +158,21 @@ switch_hw_receive_err_exit: } int -switch_hw_tx (char *buf, int len, struct net_device *dev) +ifxmips_mii_hw_tx(char *buf, int len, struct net_device *dev) { int ret = 0; - struct switch_priv *priv = dev->priv; + 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) +ifxmips_mii_tx(struct sk_buff *skb, struct net_device *dev) { int len; char *data; - struct switch_priv *priv = dev->priv; + 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; @@ -194,7 +185,7 @@ switch_tx (struct sk_buff *skb, struct net_device *dev) 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++; @@ -208,37 +199,32 @@ switch_tx (struct sk_buff *skb, struct net_device *dev) } void -switch_tx_timeout (struct net_device *dev) +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) +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(KERN_INFO DRVNAME ": tx buffer full\n"); - netif_stop_queue(&ifxmips_mii0_dev); + 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) @@ -250,7 +236,7 @@ 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; } @@ -258,7 +244,7 @@ dma_intr_handler (struct dma_device_info* dma_dev, int status) } unsigned char* -ifxmips_etop_dma_buffer_alloc (int len, int *byte_offset, void **opt) +ifxmips_etop_dma_buffer_alloc(int len, int *byte_offset, void **opt) { unsigned char *buffer = NULL; struct sk_buff *skb = NULL; @@ -276,11 +262,11 @@ ifxmips_etop_dma_buffer_alloc (int len, int *byte_offset, void **opt) } void -ifxmips_etop_dma_buffer_free (unsigned char *dataptr, void *opt) +ifxmips_etop_dma_buffer_free(unsigned char *dataptr, void *opt) { struct sk_buff *skb = NULL; - if(opt == NULL) + if (opt == NULL) { kfree(dataptr); } else { @@ -290,43 +276,32 @@ ifxmips_etop_dma_buffer_free (unsigned char *dataptr, void *opt) } static struct net_device_stats* -ifxmips_get_stats (struct net_device *dev) +ifxmips_get_stats(struct net_device *dev) { return (struct net_device_stats *)dev->priv; } static int -switch_init (struct net_device *dev) +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(KERN_INFO DRVNAME ": %s is 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){ 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; @@ -339,53 +314,34 @@ switch_init (struct net_device *dev) } 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.*/ + printk(KERN_INFO "ifxmips_mii0: using mac="); for (i = 0; i < 6; i++) - retval += u_boot_ethaddr[i]; - - //TODO - /* ethaddr not set in u-boot ? */ - if (retval == 0) { - printk(KERN_INFO DRVNAME ": using 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]; + dev->dev_addr[i] = mac_addr[i]; + printk("%02X%c", dev->dev_addr[i], (i == 5)?('\n'):(':')); } - return 0; } static void -ifxmips_sw_chip_init (int mode) +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(); } @@ -393,22 +349,20 @@ 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); + 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 DRVNAME ": error %i registering device \"%s\"\n", result, ifxmips_mii0_dev.name); + 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(KERN_INFO DRVNAME ": driver loaded!\n"); + printk(KERN_INFO "ifxmips_mii0: driver loaded!\n"); out: return result; @@ -417,37 +371,35 @@ out: 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(KERN_INFO DRVNAME ": 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; } -static struct -platform_driver ifxmips_mii_driver = { - .probe = ifxmips_mii_probe, - .remove = ifxmips_mii_remove, - .driver = { - .name = DRVNAME, - .owner = THIS_MODULE, - }, +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 DRVNAME ": Error registering platfom driver!"); - - return ret; + int ret = platform_driver_register(&ifxmips_mii_driver); + if (ret) + printk(KERN_INFO "ifxmips_mii0: Error registering platfom driver!"); + return ret; } static void __exit @@ -458,3 +410,7 @@ ifxmips_mii_cleanup(void) 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");