diff options
author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-07-24 21:01:17 (GMT) |
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committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-13 06:46:51 (GMT) |
commit | 9c8571da0a85e4491d1d5bda088b534087e29497 (patch) | |
tree | c565160211fd681db03e2e802ddf669a0b6d105c /drivers/net/dnet.c | |
parent | 7e25d72458c64e6ca76d69ae8da9ba98f1bf9d25 (diff) | |
download | linux-9c8571da0a85e4491d1d5bda088b534087e29497.tar.xz |
dnet: Move the Dave Ethernet driver
Move the Dave Ethernet driver into drivers/net/ethernet/ and
make the necessary Kconfig and Makefile changes.
CC: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/dnet.c')
-rw-r--r-- | drivers/net/dnet.c | 996 |
1 files changed, 0 insertions, 996 deletions
diff --git a/drivers/net/dnet.c b/drivers/net/dnet.c deleted file mode 100644 index c1063d1..0000000 --- a/drivers/net/dnet.c +++ /dev/null @@ -1,996 +0,0 @@ -/* - * Dave DNET Ethernet Controller driver - * - * Copyright (C) 2008 Dave S.r.l. <www.dave.eu> - * Copyright (C) 2009 Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/io.h> -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/dma-mapping.h> -#include <linux/platform_device.h> -#include <linux/phy.h> - -#include "dnet.h" - -#undef DEBUG - -/* function for reading internal MAC register */ -static u16 dnet_readw_mac(struct dnet *bp, u16 reg) -{ - u16 data_read; - - /* issue a read */ - dnet_writel(bp, reg, MACREG_ADDR); - - /* since a read/write op to the MAC is very slow, - * we must wait before reading the data */ - ndelay(500); - - /* read data read from the MAC register */ - data_read = dnet_readl(bp, MACREG_DATA); - - /* all done */ - return data_read; -} - -/* function for writing internal MAC register */ -static void dnet_writew_mac(struct dnet *bp, u16 reg, u16 val) -{ - /* load data to write */ - dnet_writel(bp, val, MACREG_DATA); - - /* issue a write */ - dnet_writel(bp, reg | DNET_INTERNAL_WRITE, MACREG_ADDR); - - /* since a read/write op to the MAC is very slow, - * we must wait before exiting */ - ndelay(500); -} - -static void __dnet_set_hwaddr(struct dnet *bp) -{ - u16 tmp; - - tmp = be16_to_cpup((__be16 *)bp->dev->dev_addr); - dnet_writew_mac(bp, DNET_INTERNAL_MAC_ADDR_0_REG, tmp); - tmp = be16_to_cpup((__be16 *)(bp->dev->dev_addr + 2)); - dnet_writew_mac(bp, DNET_INTERNAL_MAC_ADDR_1_REG, tmp); - tmp = be16_to_cpup((__be16 *)(bp->dev->dev_addr + 4)); - dnet_writew_mac(bp, DNET_INTERNAL_MAC_ADDR_2_REG, tmp); -} - -static void __devinit dnet_get_hwaddr(struct dnet *bp) -{ - u16 tmp; - u8 addr[6]; - - /* - * from MAC docs: - * "Note that the MAC address is stored in the registers in Hexadecimal - * form. For example, to set the MAC Address to: AC-DE-48-00-00-80 - * would require writing 0xAC (octet 0) to address 0x0B (high byte of - * Mac_addr[15:0]), 0xDE (octet 1) to address 0x0A (Low byte of - * Mac_addr[15:0]), 0x48 (octet 2) to address 0x0D (high byte of - * Mac_addr[15:0]), 0x00 (octet 3) to address 0x0C (Low byte of - * Mac_addr[15:0]), 0x00 (octet 4) to address 0x0F (high byte of - * Mac_addr[15:0]), and 0x80 (octet 5) to address * 0x0E (Low byte of - * Mac_addr[15:0]). - */ - tmp = dnet_readw_mac(bp, DNET_INTERNAL_MAC_ADDR_0_REG); - *((__be16 *)addr) = cpu_to_be16(tmp); - tmp = dnet_readw_mac(bp, DNET_INTERNAL_MAC_ADDR_1_REG); - *((__be16 *)(addr + 2)) = cpu_to_be16(tmp); - tmp = dnet_readw_mac(bp, DNET_INTERNAL_MAC_ADDR_2_REG); - *((__be16 *)(addr + 4)) = cpu_to_be16(tmp); - - if (is_valid_ether_addr(addr)) - memcpy(bp->dev->dev_addr, addr, sizeof(addr)); -} - -static int dnet_mdio_read(struct mii_bus *bus, int mii_id, int regnum) -{ - struct dnet *bp = bus->priv; - u16 value; - - while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG) - & DNET_INTERNAL_GMII_MNG_CMD_FIN)) - cpu_relax(); - - /* only 5 bits allowed for phy-addr and reg_offset */ - mii_id &= 0x1f; - regnum &= 0x1f; - - /* prepare reg_value for a read */ - value = (mii_id << 8); - value |= regnum; - - /* write control word */ - dnet_writew_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG, value); - - /* wait for end of transfer */ - while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG) - & DNET_INTERNAL_GMII_MNG_CMD_FIN)) - cpu_relax(); - - value = dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_DAT_REG); - - pr_debug("mdio_read %02x:%02x <- %04x\n", mii_id, regnum, value); - - return value; -} - -static int dnet_mdio_write(struct mii_bus *bus, int mii_id, int regnum, - u16 value) -{ - struct dnet *bp = bus->priv; - u16 tmp; - - pr_debug("mdio_write %02x:%02x <- %04x\n", mii_id, regnum, value); - - while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG) - & DNET_INTERNAL_GMII_MNG_CMD_FIN)) - cpu_relax(); - - /* prepare for a write operation */ - tmp = (1 << 13); - - /* only 5 bits allowed for phy-addr and reg_offset */ - mii_id &= 0x1f; - regnum &= 0x1f; - - /* only 16 bits on data */ - value &= 0xffff; - - /* prepare reg_value for a write */ - tmp |= (mii_id << 8); - tmp |= regnum; - - /* write data to write first */ - dnet_writew_mac(bp, DNET_INTERNAL_GMII_MNG_DAT_REG, value); - - /* write control word */ - dnet_writew_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG, tmp); - - while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG) - & DNET_INTERNAL_GMII_MNG_CMD_FIN)) - cpu_relax(); - - return 0; -} - -static int dnet_mdio_reset(struct mii_bus *bus) -{ - return 0; -} - -static void dnet_handle_link_change(struct net_device *dev) -{ - struct dnet *bp = netdev_priv(dev); - struct phy_device *phydev = bp->phy_dev; - unsigned long flags; - u32 mode_reg, ctl_reg; - - int status_change = 0; - - spin_lock_irqsave(&bp->lock, flags); - - mode_reg = dnet_readw_mac(bp, DNET_INTERNAL_MODE_REG); - ctl_reg = dnet_readw_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG); - - if (phydev->link) { - if (bp->duplex != phydev->duplex) { - if (phydev->duplex) - ctl_reg &= - ~(DNET_INTERNAL_RXTX_CONTROL_ENABLEHALFDUP); - else - ctl_reg |= - DNET_INTERNAL_RXTX_CONTROL_ENABLEHALFDUP; - - bp->duplex = phydev->duplex; - status_change = 1; - } - - if (bp->speed != phydev->speed) { - status_change = 1; - switch (phydev->speed) { - case 1000: - mode_reg |= DNET_INTERNAL_MODE_GBITEN; - break; - case 100: - case 10: - mode_reg &= ~DNET_INTERNAL_MODE_GBITEN; - break; - default: - printk(KERN_WARNING - "%s: Ack! Speed (%d) is not " - "10/100/1000!\n", dev->name, - phydev->speed); - break; - } - bp->speed = phydev->speed; - } - } - - if (phydev->link != bp->link) { - if (phydev->link) { - mode_reg |= - (DNET_INTERNAL_MODE_RXEN | DNET_INTERNAL_MODE_TXEN); - } else { - mode_reg &= - ~(DNET_INTERNAL_MODE_RXEN | - DNET_INTERNAL_MODE_TXEN); - bp->speed = 0; - bp->duplex = -1; - } - bp->link = phydev->link; - - status_change = 1; - } - - if (status_change) { - dnet_writew_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG, ctl_reg); - dnet_writew_mac(bp, DNET_INTERNAL_MODE_REG, mode_reg); - } - - spin_unlock_irqrestore(&bp->lock, flags); - - if (status_change) { - if (phydev->link) - printk(KERN_INFO "%s: link up (%d/%s)\n", - dev->name, phydev->speed, - DUPLEX_FULL == phydev->duplex ? "Full" : "Half"); - else - printk(KERN_INFO "%s: link down\n", dev->name); - } -} - -static int dnet_mii_probe(struct net_device *dev) -{ - struct dnet *bp = netdev_priv(dev); - struct phy_device *phydev = NULL; - int phy_addr; - - /* find the first phy */ - for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { - if (bp->mii_bus->phy_map[phy_addr]) { - phydev = bp->mii_bus->phy_map[phy_addr]; - break; - } - } - - if (!phydev) { - printk(KERN_ERR "%s: no PHY found\n", dev->name); - return -ENODEV; - } - - /* TODO : add pin_irq */ - - /* attach the mac to the phy */ - if (bp->capabilities & DNET_HAS_RMII) { - phydev = phy_connect(dev, dev_name(&phydev->dev), - &dnet_handle_link_change, 0, - PHY_INTERFACE_MODE_RMII); - } else { - phydev = phy_connect(dev, dev_name(&phydev->dev), - &dnet_handle_link_change, 0, - PHY_INTERFACE_MODE_MII); - } - - if (IS_ERR(phydev)) { - printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name); - return PTR_ERR(phydev); - } - - /* mask with MAC supported features */ - if (bp->capabilities & DNET_HAS_GIGABIT) - phydev->supported &= PHY_GBIT_FEATURES; - else - phydev->supported &= PHY_BASIC_FEATURES; - - phydev->supported |= SUPPORTED_Asym_Pause | SUPPORTED_Pause; - - phydev->advertising = phydev->supported; - - bp->link = 0; - bp->speed = 0; - bp->duplex = -1; - bp->phy_dev = phydev; - - return 0; -} - -static int dnet_mii_init(struct dnet *bp) -{ - int err, i; - - bp->mii_bus = mdiobus_alloc(); - if (bp->mii_bus == NULL) - return -ENOMEM; - - bp->mii_bus->name = "dnet_mii_bus"; - bp->mii_bus->read = &dnet_mdio_read; - bp->mii_bus->write = &dnet_mdio_write; - bp->mii_bus->reset = &dnet_mdio_reset; - - snprintf(bp->mii_bus->id, MII_BUS_ID_SIZE, "%x", 0); - - bp->mii_bus->priv = bp; - - bp->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); - if (!bp->mii_bus->irq) { - err = -ENOMEM; - goto err_out; - } - - for (i = 0; i < PHY_MAX_ADDR; i++) - bp->mii_bus->irq[i] = PHY_POLL; - - if (mdiobus_register(bp->mii_bus)) { - err = -ENXIO; - goto err_out_free_mdio_irq; - } - - if (dnet_mii_probe(bp->dev) != 0) { - err = -ENXIO; - goto err_out_unregister_bus; - } - - return 0; - -err_out_unregister_bus: - mdiobus_unregister(bp->mii_bus); -err_out_free_mdio_irq: - kfree(bp->mii_bus->irq); -err_out: - mdiobus_free(bp->mii_bus); - return err; -} - -/* For Neptune board: LINK1000 as Link LED and TX as activity LED */ -static int dnet_phy_marvell_fixup(struct phy_device *phydev) -{ - return phy_write(phydev, 0x18, 0x4148); -} - -static void dnet_update_stats(struct dnet *bp) -{ - u32 __iomem *reg = bp->regs + DNET_RX_PKT_IGNR_CNT; - u32 *p = &bp->hw_stats.rx_pkt_ignr; - u32 *end = &bp->hw_stats.rx_byte + 1; - - WARN_ON((unsigned long)(end - p - 1) != - (DNET_RX_BYTE_CNT - DNET_RX_PKT_IGNR_CNT) / 4); - - for (; p < end; p++, reg++) - *p += readl(reg); - - reg = bp->regs + DNET_TX_UNICAST_CNT; - p = &bp->hw_stats.tx_unicast; - end = &bp->hw_stats.tx_byte + 1; - - WARN_ON((unsigned long)(end - p - 1) != - (DNET_TX_BYTE_CNT - DNET_TX_UNICAST_CNT) / 4); - - for (; p < end; p++, reg++) - *p += readl(reg); -} - -static int dnet_poll(struct napi_struct *napi, int budget) -{ - struct dnet *bp = container_of(napi, struct dnet, napi); - struct net_device *dev = bp->dev; - int npackets = 0; - unsigned int pkt_len; - struct sk_buff *skb; - unsigned int *data_ptr; - u32 int_enable; - u32 cmd_word; - int i; - - while (npackets < budget) { - /* - * break out of while loop if there are no more - * packets waiting - */ - if (!(dnet_readl(bp, RX_FIFO_WCNT) >> 16)) { - napi_complete(napi); - int_enable = dnet_readl(bp, INTR_ENB); - int_enable |= DNET_INTR_SRC_RX_CMDFIFOAF; - dnet_writel(bp, int_enable, INTR_ENB); - return 0; - } - - cmd_word = dnet_readl(bp, RX_LEN_FIFO); - pkt_len = cmd_word & 0xFFFF; - - if (cmd_word & 0xDF180000) - printk(KERN_ERR "%s packet receive error %x\n", - __func__, cmd_word); - - skb = dev_alloc_skb(pkt_len + 5); - if (skb != NULL) { - /* Align IP on 16 byte boundaries */ - skb_reserve(skb, 2); - /* - * 'skb_put()' points to the start of sk_buff - * data area. - */ - data_ptr = (unsigned int *)skb_put(skb, pkt_len); - for (i = 0; i < (pkt_len + 3) >> 2; i++) - *data_ptr++ = dnet_readl(bp, RX_DATA_FIFO); - skb->protocol = eth_type_trans(skb, dev); - netif_receive_skb(skb); - npackets++; - } else - printk(KERN_NOTICE - "%s: No memory to allocate a sk_buff of " - "size %u.\n", dev->name, pkt_len); - } - - budget -= npackets; - - if (npackets < budget) { - /* We processed all packets available. Tell NAPI it can - * stop polling then re-enable rx interrupts */ - napi_complete(napi); - int_enable = dnet_readl(bp, INTR_ENB); - int_enable |= DNET_INTR_SRC_RX_CMDFIFOAF; - dnet_writel(bp, int_enable, INTR_ENB); - return 0; - } - - /* There are still packets waiting */ - return 1; -} - -static irqreturn_t dnet_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct dnet *bp = netdev_priv(dev); - u32 int_src, int_enable, int_current; - unsigned long flags; - unsigned int handled = 0; - - spin_lock_irqsave(&bp->lock, flags); - - /* read and clear the DNET irq (clear on read) */ - int_src = dnet_readl(bp, INTR_SRC); - int_enable = dnet_readl(bp, INTR_ENB); - int_current = int_src & int_enable; - - /* restart the queue if we had stopped it for TX fifo almost full */ - if (int_current & DNET_INTR_SRC_TX_FIFOAE) { - int_enable = dnet_readl(bp, INTR_ENB); - int_enable &= ~DNET_INTR_ENB_TX_FIFOAE; - dnet_writel(bp, int_enable, INTR_ENB); - netif_wake_queue(dev); - handled = 1; - } - - /* RX FIFO error checking */ - if (int_current & - (DNET_INTR_SRC_RX_CMDFIFOFF | DNET_INTR_SRC_RX_DATAFIFOFF)) { - printk(KERN_ERR "%s: RX fifo error %x, irq %x\n", __func__, - dnet_readl(bp, RX_STATUS), int_current); - /* we can only flush the RX FIFOs */ - dnet_writel(bp, DNET_SYS_CTL_RXFIFOFLUSH, SYS_CTL); - ndelay(500); - dnet_writel(bp, 0, SYS_CTL); - handled = 1; - } - - /* TX FIFO error checking */ - if (int_current & - (DNET_INTR_SRC_TX_FIFOFULL | DNET_INTR_SRC_TX_DISCFRM)) { - printk(KERN_ERR "%s: TX fifo error %x, irq %x\n", __func__, - dnet_readl(bp, TX_STATUS), int_current); - /* we can only flush the TX FIFOs */ - dnet_writel(bp, DNET_SYS_CTL_TXFIFOFLUSH, SYS_CTL); - ndelay(500); - dnet_writel(bp, 0, SYS_CTL); - handled = 1; - } - - if (int_current & DNET_INTR_SRC_RX_CMDFIFOAF) { - if (napi_schedule_prep(&bp->napi)) { - /* - * There's no point taking any more interrupts - * until we have processed the buffers - */ - /* Disable Rx interrupts and schedule NAPI poll */ - int_enable = dnet_readl(bp, INTR_ENB); - int_enable &= ~DNET_INTR_SRC_RX_CMDFIFOAF; - dnet_writel(bp, int_enable, INTR_ENB); - __napi_schedule(&bp->napi); - } - handled = 1; - } - - if (!handled) - pr_debug("%s: irq %x remains\n", __func__, int_current); - - spin_unlock_irqrestore(&bp->lock, flags); - - return IRQ_RETVAL(handled); -} - -#ifdef DEBUG -static inline void dnet_print_skb(struct sk_buff *skb) -{ - int k; - printk(KERN_DEBUG PFX "data:"); - for (k = 0; k < skb->len; k++) - printk(" %02x", (unsigned int)skb->data[k]); - printk("\n"); -} -#else -#define dnet_print_skb(skb) do {} while (0) -#endif - -static netdev_tx_t dnet_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - - struct dnet *bp = netdev_priv(dev); - u32 tx_status, irq_enable; - unsigned int len, i, tx_cmd, wrsz; - unsigned long flags; - unsigned int *bufp; - - tx_status = dnet_readl(bp, TX_STATUS); - - pr_debug("start_xmit: len %u head %p data %p\n", - skb->len, skb->head, skb->data); - dnet_print_skb(skb); - - /* frame size (words) */ - len = (skb->len + 3) >> 2; - - spin_lock_irqsave(&bp->lock, flags); - - tx_status = dnet_readl(bp, TX_STATUS); - - bufp = (unsigned int *)(((unsigned long) skb->data) & ~0x3UL); - wrsz = (u32) skb->len + 3; - wrsz += ((unsigned long) skb->data) & 0x3; - wrsz >>= 2; - tx_cmd = ((((unsigned long)(skb->data)) & 0x03) << 16) | (u32) skb->len; - - /* check if there is enough room for the current frame */ - if (wrsz < (DNET_FIFO_SIZE - dnet_readl(bp, TX_FIFO_WCNT))) { - for (i = 0; i < wrsz; i++) - dnet_writel(bp, *bufp++, TX_DATA_FIFO); - - /* - * inform MAC that a packet's written and ready to be - * shipped out - */ - dnet_writel(bp, tx_cmd, TX_LEN_FIFO); - } - - if (dnet_readl(bp, TX_FIFO_WCNT) > DNET_FIFO_TX_DATA_AF_TH) { - netif_stop_queue(dev); - tx_status = dnet_readl(bp, INTR_SRC); - irq_enable = dnet_readl(bp, INTR_ENB); - irq_enable |= DNET_INTR_ENB_TX_FIFOAE; - dnet_writel(bp, irq_enable, INTR_ENB); - } - - skb_tx_timestamp(skb); - - /* free the buffer */ - dev_kfree_skb(skb); - - spin_unlock_irqrestore(&bp->lock, flags); - - return NETDEV_TX_OK; -} - -static void dnet_reset_hw(struct dnet *bp) -{ - /* put ts_mac in IDLE state i.e. disable rx/tx */ - dnet_writew_mac(bp, DNET_INTERNAL_MODE_REG, DNET_INTERNAL_MODE_FCEN); - - /* - * RX FIFO almost full threshold: only cmd FIFO almost full is - * implemented for RX side - */ - dnet_writel(bp, DNET_FIFO_RX_CMD_AF_TH, RX_FIFO_TH); - /* - * TX FIFO almost empty threshold: only data FIFO almost empty - * is implemented for TX side - */ - dnet_writel(bp, DNET_FIFO_TX_DATA_AE_TH, TX_FIFO_TH); - - /* flush rx/tx fifos */ - dnet_writel(bp, DNET_SYS_CTL_RXFIFOFLUSH | DNET_SYS_CTL_TXFIFOFLUSH, - SYS_CTL); - msleep(1); - dnet_writel(bp, 0, SYS_CTL); -} - -static void dnet_init_hw(struct dnet *bp) -{ - u32 config; - - dnet_reset_hw(bp); - __dnet_set_hwaddr(bp); - - config = dnet_readw_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG); - - if (bp->dev->flags & IFF_PROMISC) - /* Copy All Frames */ - config |= DNET_INTERNAL_RXTX_CONTROL_ENPROMISC; - if (!(bp->dev->flags & IFF_BROADCAST)) - /* No BroadCast */ - config |= DNET_INTERNAL_RXTX_CONTROL_RXMULTICAST; - - config |= DNET_INTERNAL_RXTX_CONTROL_RXPAUSE | - DNET_INTERNAL_RXTX_CONTROL_RXBROADCAST | - DNET_INTERNAL_RXTX_CONTROL_DROPCONTROL | - DNET_INTERNAL_RXTX_CONTROL_DISCFXFCS; - - dnet_writew_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG, config); - - /* clear irq before enabling them */ - config = dnet_readl(bp, INTR_SRC); - - /* enable RX/TX interrupt, recv packet ready interrupt */ - dnet_writel(bp, DNET_INTR_ENB_GLOBAL_ENABLE | DNET_INTR_ENB_RX_SUMMARY | - DNET_INTR_ENB_TX_SUMMARY | DNET_INTR_ENB_RX_FIFOERR | - DNET_INTR_ENB_RX_ERROR | DNET_INTR_ENB_RX_FIFOFULL | - DNET_INTR_ENB_TX_FIFOFULL | DNET_INTR_ENB_TX_DISCFRM | - DNET_INTR_ENB_RX_PKTRDY, INTR_ENB); -} - -static int dnet_open(struct net_device *dev) -{ - struct dnet *bp = netdev_priv(dev); - - /* if the phy is not yet register, retry later */ - if (!bp->phy_dev) - return -EAGAIN; - - if (!is_valid_ether_addr(dev->dev_addr)) - return -EADDRNOTAVAIL; - - napi_enable(&bp->napi); - dnet_init_hw(bp); - - phy_start_aneg(bp->phy_dev); - - /* schedule a link state check */ - phy_start(bp->phy_dev); - - netif_start_queue(dev); - - return 0; -} - -static int dnet_close(struct net_device *dev) -{ - struct dnet *bp = netdev_priv(dev); - - netif_stop_queue(dev); - napi_disable(&bp->napi); - - if (bp->phy_dev) - phy_stop(bp->phy_dev); - - dnet_reset_hw(bp); - netif_carrier_off(dev); - - return 0; -} - -static inline void dnet_print_pretty_hwstats(struct dnet_stats *hwstat) -{ - pr_debug("%s\n", __func__); - pr_debug("----------------------------- RX statistics " - "-------------------------------\n"); - pr_debug("RX_PKT_IGNR_CNT %-8x\n", hwstat->rx_pkt_ignr); - pr_debug("RX_LEN_CHK_ERR_CNT %-8x\n", hwstat->rx_len_chk_err); - pr_debug("RX_LNG_FRM_CNT %-8x\n", hwstat->rx_lng_frm); - pr_debug("RX_SHRT_FRM_CNT %-8x\n", hwstat->rx_shrt_frm); - pr_debug("RX_IPG_VIOL_CNT %-8x\n", hwstat->rx_ipg_viol); - pr_debug("RX_CRC_ERR_CNT %-8x\n", hwstat->rx_crc_err); - pr_debug("RX_OK_PKT_CNT %-8x\n", hwstat->rx_ok_pkt); - pr_debug("RX_CTL_FRM_CNT %-8x\n", hwstat->rx_ctl_frm); - pr_debug("RX_PAUSE_FRM_CNT %-8x\n", hwstat->rx_pause_frm); - pr_debug("RX_MULTICAST_CNT %-8x\n", hwstat->rx_multicast); - pr_debug("RX_BROADCAST_CNT %-8x\n", hwstat->rx_broadcast); - pr_debug("RX_VLAN_TAG_CNT %-8x\n", hwstat->rx_vlan_tag); - pr_debug("RX_PRE_SHRINK_CNT %-8x\n", hwstat->rx_pre_shrink); - pr_debug("RX_DRIB_NIB_CNT %-8x\n", hwstat->rx_drib_nib); - pr_debug("RX_UNSUP_OPCD_CNT %-8x\n", hwstat->rx_unsup_opcd); - pr_debug("RX_BYTE_CNT %-8x\n", hwstat->rx_byte); - pr_debug("----------------------------- TX statistics " - "-------------------------------\n"); - pr_debug("TX_UNICAST_CNT %-8x\n", hwstat->tx_unicast); - pr_debug("TX_PAUSE_FRM_CNT %-8x\n", hwstat->tx_pause_frm); - pr_debug("TX_MULTICAST_CNT %-8x\n", hwstat->tx_multicast); - pr_debug("TX_BRDCAST_CNT %-8x\n", hwstat->tx_brdcast); - pr_debug("TX_VLAN_TAG_CNT %-8x\n", hwstat->tx_vlan_tag); - pr_debug("TX_BAD_FCS_CNT %-8x\n", hwstat->tx_bad_fcs); - pr_debug("TX_JUMBO_CNT %-8x\n", hwstat->tx_jumbo); - pr_debug("TX_BYTE_CNT %-8x\n", hwstat->tx_byte); -} - -static struct net_device_stats *dnet_get_stats(struct net_device *dev) -{ - - struct dnet *bp = netdev_priv(dev); - struct net_device_stats *nstat = &dev->stats; - struct dnet_stats *hwstat = &bp->hw_stats; - - /* read stats from hardware */ - dnet_update_stats(bp); - - /* Convert HW stats into netdevice stats */ - nstat->rx_errors = (hwstat->rx_len_chk_err + - hwstat->rx_lng_frm + hwstat->rx_shrt_frm + - /* ignore IGP violation error - hwstat->rx_ipg_viol + */ - hwstat->rx_crc_err + - hwstat->rx_pre_shrink + - hwstat->rx_drib_nib + hwstat->rx_unsup_opcd); - nstat->tx_errors = hwstat->tx_bad_fcs; - nstat->rx_length_errors = (hwstat->rx_len_chk_err + - hwstat->rx_lng_frm + - hwstat->rx_shrt_frm + hwstat->rx_pre_shrink); - nstat->rx_crc_errors = hwstat->rx_crc_err; - nstat->rx_frame_errors = hwstat->rx_pre_shrink + hwstat->rx_drib_nib; - nstat->rx_packets = hwstat->rx_ok_pkt; - nstat->tx_packets = (hwstat->tx_unicast + - hwstat->tx_multicast + hwstat->tx_brdcast); - nstat->rx_bytes = hwstat->rx_byte; - nstat->tx_bytes = hwstat->tx_byte; - nstat->multicast = hwstat->rx_multicast; - nstat->rx_missed_errors = hwstat->rx_pkt_ignr; - - dnet_print_pretty_hwstats(hwstat); - - return nstat; -} - -static int dnet_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct dnet *bp = netdev_priv(dev); - struct phy_device *phydev = bp->phy_dev; - - if (!phydev) - return -ENODEV; - - return phy_ethtool_gset(phydev, cmd); -} - -static int dnet_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct dnet *bp = netdev_priv(dev); - struct phy_device *phydev = bp->phy_dev; - - if (!phydev) - return -ENODEV; - - return phy_ethtool_sset(phydev, cmd); -} - -static int dnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct dnet *bp = netdev_priv(dev); - struct phy_device *phydev = bp->phy_dev; - - if (!netif_running(dev)) - return -EINVAL; - - if (!phydev) - return -ENODEV; - - return phy_mii_ioctl(phydev, rq, cmd); -} - -static void dnet_get_drvinfo(struct net_device *dev, - struct ethtool_drvinfo *info) -{ - strcpy(info->driver, DRV_NAME); - strcpy(info->version, DRV_VERSION); - strcpy(info->bus_info, "0"); -} - -static const struct ethtool_ops dnet_ethtool_ops = { - .get_settings = dnet_get_settings, - .set_settings = dnet_set_settings, - .get_drvinfo = dnet_get_drvinfo, - .get_link = ethtool_op_get_link, -}; - -static const struct net_device_ops dnet_netdev_ops = { - .ndo_open = dnet_open, - .ndo_stop = dnet_close, - .ndo_get_stats = dnet_get_stats, - .ndo_start_xmit = dnet_start_xmit, - .ndo_do_ioctl = dnet_ioctl, - .ndo_set_mac_address = eth_mac_addr, - .ndo_validate_addr = eth_validate_addr, - .ndo_change_mtu = eth_change_mtu, -}; - -static int __devinit dnet_probe(struct platform_device *pdev) -{ - struct resource *res; - struct net_device *dev; - struct dnet *bp; - struct phy_device *phydev; - int err = -ENXIO; - unsigned int mem_base, mem_size, irq; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "no mmio resource defined\n"); - goto err_out; - } - mem_base = res->start; - mem_size = resource_size(res); - irq = platform_get_irq(pdev, 0); - - if (!request_mem_region(mem_base, mem_size, DRV_NAME)) { - dev_err(&pdev->dev, "no memory region available\n"); - err = -EBUSY; - goto err_out; - } - - err = -ENOMEM; - dev = alloc_etherdev(sizeof(*bp)); - if (!dev) { - dev_err(&pdev->dev, "etherdev alloc failed, aborting.\n"); - goto err_out_release_mem; - } - - /* TODO: Actually, we have some interesting features... */ - dev->features |= 0; - - bp = netdev_priv(dev); - bp->dev = dev; - - platform_set_drvdata(pdev, dev); - SET_NETDEV_DEV(dev, &pdev->dev); - - spin_lock_init(&bp->lock); - - bp->regs = ioremap(mem_base, mem_size); - if (!bp->regs) { - dev_err(&pdev->dev, "failed to map registers, aborting.\n"); - err = -ENOMEM; - goto err_out_free_dev; - } - - dev->irq = irq; - err = request_irq(dev->irq, dnet_interrupt, 0, DRV_NAME, dev); - if (err) { - dev_err(&pdev->dev, "Unable to request IRQ %d (error %d)\n", - irq, err); - goto err_out_iounmap; - } - - dev->netdev_ops = &dnet_netdev_ops; - netif_napi_add(dev, &bp->napi, dnet_poll, 64); - dev->ethtool_ops = &dnet_ethtool_ops; - - dev->base_addr = (unsigned long)bp->regs; - - bp->capabilities = dnet_readl(bp, VERCAPS) & DNET_CAPS_MASK; - - dnet_get_hwaddr(bp); - - if (!is_valid_ether_addr(dev->dev_addr)) { - /* choose a random ethernet address */ - random_ether_addr(dev->dev_addr); - __dnet_set_hwaddr(bp); - } - - err = register_netdev(dev); - if (err) { - dev_err(&pdev->dev, "Cannot register net device, aborting.\n"); - goto err_out_free_irq; - } - - /* register the PHY board fixup (for Marvell 88E1111) */ - err = phy_register_fixup_for_uid(0x01410cc0, 0xfffffff0, - dnet_phy_marvell_fixup); - /* we can live without it, so just issue a warning */ - if (err) - dev_warn(&pdev->dev, "Cannot register PHY board fixup.\n"); - - err = dnet_mii_init(bp); - if (err) - goto err_out_unregister_netdev; - - dev_info(&pdev->dev, "Dave DNET at 0x%p (0x%08x) irq %d %pM\n", - bp->regs, mem_base, dev->irq, dev->dev_addr); - dev_info(&pdev->dev, "has %smdio, %sirq, %sgigabit, %sdma\n", - (bp->capabilities & DNET_HAS_MDIO) ? "" : "no ", - (bp->capabilities & DNET_HAS_IRQ) ? "" : "no ", - (bp->capabilities & DNET_HAS_GIGABIT) ? "" : "no ", - (bp->capabilities & DNET_HAS_DMA) ? "" : "no "); - phydev = bp->phy_dev; - dev_info(&pdev->dev, "attached PHY driver [%s] " - "(mii_bus:phy_addr=%s, irq=%d)\n", - phydev->drv->name, dev_name(&phydev->dev), phydev->irq); - - return 0; - -err_out_unregister_netdev: - unregister_netdev(dev); -err_out_free_irq: - free_irq(dev->irq, dev); -err_out_iounmap: - iounmap(bp->regs); -err_out_free_dev: - free_netdev(dev); -err_out_release_mem: - release_mem_region(mem_base, mem_size); -err_out: - return err; -} - -static int __devexit dnet_remove(struct platform_device *pdev) -{ - - struct net_device *dev; - struct dnet *bp; - - dev = platform_get_drvdata(pdev); - - if (dev) { - bp = netdev_priv(dev); - if (bp->phy_dev) - phy_disconnect(bp->phy_dev); - mdiobus_unregister(bp->mii_bus); - kfree(bp->mii_bus->irq); - mdiobus_free(bp->mii_bus); - unregister_netdev(dev); - free_irq(dev->irq, dev); - iounmap(bp->regs); - free_netdev(dev); - } - - return 0; -} - -static struct platform_driver dnet_driver = { - .probe = dnet_probe, - .remove = __devexit_p(dnet_remove), - .driver = { - .name = "dnet", - }, -}; - -static int __init dnet_init(void) -{ - return platform_driver_register(&dnet_driver); -} - -static void __exit dnet_exit(void) -{ - platform_driver_unregister(&dnet_driver); -} - -module_init(dnet_init); -module_exit(dnet_exit); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Dave DNET Ethernet driver"); -MODULE_AUTHOR("Ilya Yanok <yanok@emcraft.com>, " - "Matteo Vit <matteo.vit@dave.eu>"); |