diff options
Diffstat (limited to 'drivers/net/fec_mpc52xx.c')
| -rw-r--r-- | drivers/net/fec_mpc52xx.c | 1104 |
1 files changed, 0 insertions, 1104 deletions
diff --git a/drivers/net/fec_mpc52xx.c b/drivers/net/fec_mpc52xx.c deleted file mode 100644 index cb4416e591f..00000000000 --- a/drivers/net/fec_mpc52xx.c +++ /dev/null @@ -1,1104 +0,0 @@ -/* - * Driver for the MPC5200 Fast Ethernet Controller - * - * Originally written by Dale Farnsworth <dfarnsworth@mvista.com> and - * now maintained by Sylvain Munaut <tnt@246tNt.com> - * - * Copyright (C) 2007 Domen Puncer, Telargo, Inc. - * Copyright (C) 2007 Sylvain Munaut <tnt@246tNt.com> - * Copyright (C) 2003-2004 MontaVista, Software, Inc. - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - * - */ - -#include <linux/dma-mapping.h> -#include <linux/module.h> - -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/spinlock.h> -#include <linux/slab.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/crc32.h> -#include <linux/hardirq.h> -#include <linux/delay.h> -#include <linux/of_device.h> -#include <linux/of_mdio.h> -#include <linux/of_platform.h> - -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/skbuff.h> - -#include <asm/io.h> -#include <asm/delay.h> -#include <asm/mpc52xx.h> - -#include <sysdev/bestcomm/bestcomm.h> -#include <sysdev/bestcomm/fec.h> - -#include "fec_mpc52xx.h" - -#define DRIVER_NAME "mpc52xx-fec" - -/* Private driver data structure */ -struct mpc52xx_fec_priv { - struct net_device *ndev; - int duplex; - int speed; - int r_irq; - int t_irq; - struct mpc52xx_fec __iomem *fec; - struct bcom_task *rx_dmatsk; - struct bcom_task *tx_dmatsk; - spinlock_t lock; - int msg_enable; - - /* MDIO link details */ - unsigned int mdio_speed; - struct device_node *phy_node; - struct phy_device *phydev; - enum phy_state link; - int seven_wire_mode; -}; - - -static irqreturn_t mpc52xx_fec_interrupt(int, void *); -static irqreturn_t mpc52xx_fec_rx_interrupt(int, void *); -static irqreturn_t mpc52xx_fec_tx_interrupt(int, void *); -static void mpc52xx_fec_stop(struct net_device *dev); -static void mpc52xx_fec_start(struct net_device *dev); -static void mpc52xx_fec_reset(struct net_device *dev); - -static u8 mpc52xx_fec_mac_addr[6]; -module_param_array_named(mac, mpc52xx_fec_mac_addr, byte, NULL, 0); -MODULE_PARM_DESC(mac, "six hex digits, ie. 0x1,0x2,0xc0,0x01,0xba,0xbe"); - -#define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \ - NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP) -static int debug = -1; /* the above default */ -module_param(debug, int, 0); -MODULE_PARM_DESC(debug, "debugging messages level"); - -static void mpc52xx_fec_tx_timeout(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - unsigned long flags; - - dev_warn(&dev->dev, "transmit timed out\n"); - - spin_lock_irqsave(&priv->lock, flags); - mpc52xx_fec_reset(dev); - dev->stats.tx_errors++; - spin_unlock_irqrestore(&priv->lock, flags); - - netif_wake_queue(dev); -} - -static void mpc52xx_fec_set_paddr(struct net_device *dev, u8 *mac) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct mpc52xx_fec __iomem *fec = priv->fec; - - out_be32(&fec->paddr1, *(u32 *)(&mac[0])); - out_be32(&fec->paddr2, (*(u16 *)(&mac[4]) << 16) | FEC_PADDR2_TYPE); -} - -static void mpc52xx_fec_get_paddr(struct net_device *dev, u8 *mac) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct mpc52xx_fec __iomem *fec = priv->fec; - - *(u32 *)(&mac[0]) = in_be32(&fec->paddr1); - *(u16 *)(&mac[4]) = in_be32(&fec->paddr2) >> 16; -} - -static int mpc52xx_fec_set_mac_address(struct net_device *dev, void *addr) -{ - struct sockaddr *sock = addr; - - memcpy(dev->dev_addr, sock->sa_data, dev->addr_len); - - mpc52xx_fec_set_paddr(dev, sock->sa_data); - return 0; -} - -static void mpc52xx_fec_free_rx_buffers(struct net_device *dev, struct bcom_task *s) -{ - while (!bcom_queue_empty(s)) { - struct bcom_fec_bd *bd; - struct sk_buff *skb; - - skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd); - dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len, - DMA_FROM_DEVICE); - kfree_skb(skb); - } -} - -static void -mpc52xx_fec_rx_submit(struct net_device *dev, struct sk_buff *rskb) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct bcom_fec_bd *bd; - - bd = (struct bcom_fec_bd *) bcom_prepare_next_buffer(priv->rx_dmatsk); - bd->status = FEC_RX_BUFFER_SIZE; - bd->skb_pa = dma_map_single(dev->dev.parent, rskb->data, - FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE); - bcom_submit_next_buffer(priv->rx_dmatsk, rskb); -} - -static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, struct bcom_task *rxtsk) -{ - struct sk_buff *skb; - - while (!bcom_queue_full(rxtsk)) { - skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE); - if (!skb) - return -EAGAIN; - - /* zero out the initial receive buffers to aid debugging */ - memset(skb->data, 0, FEC_RX_BUFFER_SIZE); - mpc52xx_fec_rx_submit(dev, skb); - } - return 0; -} - -/* based on generic_adjust_link from fs_enet-main.c */ -static void mpc52xx_fec_adjust_link(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct phy_device *phydev = priv->phydev; - int new_state = 0; - - if (phydev->link != PHY_DOWN) { - if (phydev->duplex != priv->duplex) { - struct mpc52xx_fec __iomem *fec = priv->fec; - u32 rcntrl; - u32 tcntrl; - - new_state = 1; - priv->duplex = phydev->duplex; - - rcntrl = in_be32(&fec->r_cntrl); - tcntrl = in_be32(&fec->x_cntrl); - - rcntrl &= ~FEC_RCNTRL_DRT; - tcntrl &= ~FEC_TCNTRL_FDEN; - if (phydev->duplex == DUPLEX_FULL) - tcntrl |= FEC_TCNTRL_FDEN; /* FD enable */ - else - rcntrl |= FEC_RCNTRL_DRT; /* disable Rx on Tx (HD) */ - - out_be32(&fec->r_cntrl, rcntrl); - out_be32(&fec->x_cntrl, tcntrl); - } - - if (phydev->speed != priv->speed) { - new_state = 1; - priv->speed = phydev->speed; - } - - if (priv->link == PHY_DOWN) { - new_state = 1; - priv->link = phydev->link; - } - - } else if (priv->link) { - new_state = 1; - priv->link = PHY_DOWN; - priv->speed = 0; - priv->duplex = -1; - } - - if (new_state && netif_msg_link(priv)) - phy_print_status(phydev); -} - -static int mpc52xx_fec_open(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - int err = -EBUSY; - - if (priv->phy_node) { - priv->phydev = of_phy_connect(priv->ndev, priv->phy_node, - mpc52xx_fec_adjust_link, 0, 0); - if (!priv->phydev) { - dev_err(&dev->dev, "of_phy_connect failed\n"); - return -ENODEV; - } - phy_start(priv->phydev); - } - - if (request_irq(dev->irq, mpc52xx_fec_interrupt, IRQF_SHARED, - DRIVER_NAME "_ctrl", dev)) { - dev_err(&dev->dev, "ctrl interrupt request failed\n"); - goto free_phy; - } - if (request_irq(priv->r_irq, mpc52xx_fec_rx_interrupt, 0, - DRIVER_NAME "_rx", dev)) { - dev_err(&dev->dev, "rx interrupt request failed\n"); - goto free_ctrl_irq; - } - if (request_irq(priv->t_irq, mpc52xx_fec_tx_interrupt, 0, - DRIVER_NAME "_tx", dev)) { - dev_err(&dev->dev, "tx interrupt request failed\n"); - goto free_2irqs; - } - - bcom_fec_rx_reset(priv->rx_dmatsk); - bcom_fec_tx_reset(priv->tx_dmatsk); - - err = mpc52xx_fec_alloc_rx_buffers(dev, priv->rx_dmatsk); - if (err) { - dev_err(&dev->dev, "mpc52xx_fec_alloc_rx_buffers failed\n"); - goto free_irqs; - } - - bcom_enable(priv->rx_dmatsk); - bcom_enable(priv->tx_dmatsk); - - mpc52xx_fec_start(dev); - - netif_start_queue(dev); - - return 0; - - free_irqs: - free_irq(priv->t_irq, dev); - free_2irqs: - free_irq(priv->r_irq, dev); - free_ctrl_irq: - free_irq(dev->irq, dev); - free_phy: - if (priv->phydev) { - phy_stop(priv->phydev); - phy_disconnect(priv->phydev); - priv->phydev = NULL; - } - - return err; -} - -static int mpc52xx_fec_close(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - - netif_stop_queue(dev); - - mpc52xx_fec_stop(dev); - - mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); - - free_irq(dev->irq, dev); - free_irq(priv->r_irq, dev); - free_irq(priv->t_irq, dev); - - if (priv->phydev) { - /* power down phy */ - phy_stop(priv->phydev); - phy_disconnect(priv->phydev); - priv->phydev = NULL; - } - - return 0; -} - -/* This will only be invoked if your driver is _not_ in XOFF state. - * What this means is that you need not check it, and that this - * invariant will hold if you make sure that the netif_*_queue() - * calls are done at the proper times. - */ -static int mpc52xx_fec_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct bcom_fec_bd *bd; - unsigned long flags; - - if (bcom_queue_full(priv->tx_dmatsk)) { - if (net_ratelimit()) - dev_err(&dev->dev, "transmit queue overrun\n"); - return NETDEV_TX_BUSY; - } - - spin_lock_irqsave(&priv->lock, flags); - - bd = (struct bcom_fec_bd *) - bcom_prepare_next_buffer(priv->tx_dmatsk); - - bd->status = skb->len | BCOM_FEC_TX_BD_TFD | BCOM_FEC_TX_BD_TC; - bd->skb_pa = dma_map_single(dev->dev.parent, skb->data, skb->len, - DMA_TO_DEVICE); - - skb_tx_timestamp(skb); - bcom_submit_next_buffer(priv->tx_dmatsk, skb); - spin_unlock_irqrestore(&priv->lock, flags); - - if (bcom_queue_full(priv->tx_dmatsk)) { - netif_stop_queue(dev); - } - - return NETDEV_TX_OK; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void mpc52xx_fec_poll_controller(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - - disable_irq(priv->t_irq); - mpc52xx_fec_tx_interrupt(priv->t_irq, dev); - enable_irq(priv->t_irq); - disable_irq(priv->r_irq); - mpc52xx_fec_rx_interrupt(priv->r_irq, dev); - enable_irq(priv->r_irq); -} -#endif - - -/* This handles BestComm transmit task interrupts - */ -static irqreturn_t mpc52xx_fec_tx_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - - spin_lock(&priv->lock); - while (bcom_buffer_done(priv->tx_dmatsk)) { - struct sk_buff *skb; - struct bcom_fec_bd *bd; - skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL, - (struct bcom_bd **)&bd); - dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len, - DMA_TO_DEVICE); - - dev_kfree_skb_irq(skb); - } - spin_unlock(&priv->lock); - - netif_wake_queue(dev); - - return IRQ_HANDLED; -} - -static irqreturn_t mpc52xx_fec_rx_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct sk_buff *rskb; /* received sk_buff */ - struct sk_buff *skb; /* new sk_buff to enqueue in its place */ - struct bcom_fec_bd *bd; - u32 status, physaddr; - int length; - - spin_lock(&priv->lock); - - while (bcom_buffer_done(priv->rx_dmatsk)) { - - rskb = bcom_retrieve_buffer(priv->rx_dmatsk, &status, - (struct bcom_bd **)&bd); - physaddr = bd->skb_pa; - - /* Test for errors in received frame */ - if (status & BCOM_FEC_RX_BD_ERRORS) { - /* Drop packet and reuse the buffer */ - mpc52xx_fec_rx_submit(dev, rskb); - dev->stats.rx_dropped++; - continue; - } - - /* skbs are allocated on open, so now we allocate a new one, - * and remove the old (with the packet) */ - skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE); - if (!skb) { - /* Can't get a new one : reuse the same & drop pkt */ - dev_notice(&dev->dev, "Low memory - dropped packet.\n"); - mpc52xx_fec_rx_submit(dev, rskb); - dev->stats.rx_dropped++; - continue; - } - - /* Enqueue the new sk_buff back on the hardware */ - mpc52xx_fec_rx_submit(dev, skb); - - /* Process the received skb - Drop the spin lock while - * calling into the network stack */ - spin_unlock(&priv->lock); - - dma_unmap_single(dev->dev.parent, physaddr, rskb->len, - DMA_FROM_DEVICE); - length = status & BCOM_FEC_RX_BD_LEN_MASK; - skb_put(rskb, length - 4); /* length without CRC32 */ - rskb->protocol = eth_type_trans(rskb, dev); - if (!skb_defer_rx_timestamp(skb)) - netif_rx(rskb); - - spin_lock(&priv->lock); - } - - spin_unlock(&priv->lock); - - return IRQ_HANDLED; -} - -static irqreturn_t mpc52xx_fec_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct mpc52xx_fec __iomem *fec = priv->fec; - u32 ievent; - - ievent = in_be32(&fec->ievent); - - ievent &= ~FEC_IEVENT_MII; /* mii is handled separately */ - if (!ievent) - return IRQ_NONE; - - out_be32(&fec->ievent, ievent); /* clear pending events */ - - /* on fifo error, soft-reset fec */ - if (ievent & (FEC_IEVENT_RFIFO_ERROR | FEC_IEVENT_XFIFO_ERROR)) { - - if (net_ratelimit() && (ievent & FEC_IEVENT_RFIFO_ERROR)) - dev_warn(&dev->dev, "FEC_IEVENT_RFIFO_ERROR\n"); - if (net_ratelimit() && (ievent & FEC_IEVENT_XFIFO_ERROR)) - dev_warn(&dev->dev, "FEC_IEVENT_XFIFO_ERROR\n"); - - spin_lock(&priv->lock); - mpc52xx_fec_reset(dev); - spin_unlock(&priv->lock); - - return IRQ_HANDLED; - } - - if (ievent & ~FEC_IEVENT_TFINT) - dev_dbg(&dev->dev, "ievent: %08x\n", ievent); - - return IRQ_HANDLED; -} - -/* - * Get the current statistics. - * This may be called with the card open or closed. - */ -static struct net_device_stats *mpc52xx_fec_get_stats(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct net_device_stats *stats = &dev->stats; - struct mpc52xx_fec __iomem *fec = priv->fec; - - stats->rx_bytes = in_be32(&fec->rmon_r_octets); - stats->rx_packets = in_be32(&fec->rmon_r_packets); - stats->rx_errors = in_be32(&fec->rmon_r_crc_align) + - in_be32(&fec->rmon_r_undersize) + - in_be32(&fec->rmon_r_oversize) + - in_be32(&fec->rmon_r_frag) + - in_be32(&fec->rmon_r_jab); - - stats->tx_bytes = in_be32(&fec->rmon_t_octets); - stats->tx_packets = in_be32(&fec->rmon_t_packets); - stats->tx_errors = in_be32(&fec->rmon_t_crc_align) + - in_be32(&fec->rmon_t_undersize) + - in_be32(&fec->rmon_t_oversize) + - in_be32(&fec->rmon_t_frag) + - in_be32(&fec->rmon_t_jab); - - stats->multicast = in_be32(&fec->rmon_r_mc_pkt); - stats->collisions = in_be32(&fec->rmon_t_col); - - /* detailed rx_errors: */ - stats->rx_length_errors = in_be32(&fec->rmon_r_undersize) - + in_be32(&fec->rmon_r_oversize) - + in_be32(&fec->rmon_r_frag) - + in_be32(&fec->rmon_r_jab); - stats->rx_over_errors = in_be32(&fec->r_macerr); - stats->rx_crc_errors = in_be32(&fec->ieee_r_crc); - stats->rx_frame_errors = in_be32(&fec->ieee_r_align); - stats->rx_fifo_errors = in_be32(&fec->rmon_r_drop); - stats->rx_missed_errors = in_be32(&fec->rmon_r_drop); - - /* detailed tx_errors: */ - stats->tx_aborted_errors = 0; - stats->tx_carrier_errors = in_be32(&fec->ieee_t_cserr); - stats->tx_fifo_errors = in_be32(&fec->rmon_t_drop); - stats->tx_heartbeat_errors = in_be32(&fec->ieee_t_sqe); - stats->tx_window_errors = in_be32(&fec->ieee_t_lcol); - - return stats; -} - -/* - * Read MIB counters in order to reset them, - * then zero all the stats fields in memory - */ -static void mpc52xx_fec_reset_stats(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct mpc52xx_fec __iomem *fec = priv->fec; - - out_be32(&fec->mib_control, FEC_MIB_DISABLE); - memset_io(&fec->rmon_t_drop, 0, - offsetof(struct mpc52xx_fec, reserved10) - - offsetof(struct mpc52xx_fec, rmon_t_drop)); - out_be32(&fec->mib_control, 0); - - memset(&dev->stats, 0, sizeof(dev->stats)); -} - -/* - * Set or clear the multicast filter for this adaptor. - */ -static void mpc52xx_fec_set_multicast_list(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct mpc52xx_fec __iomem *fec = priv->fec; - u32 rx_control; - - rx_control = in_be32(&fec->r_cntrl); - - if (dev->flags & IFF_PROMISC) { - rx_control |= FEC_RCNTRL_PROM; - out_be32(&fec->r_cntrl, rx_control); - } else { - rx_control &= ~FEC_RCNTRL_PROM; - out_be32(&fec->r_cntrl, rx_control); - - if (dev->flags & IFF_ALLMULTI) { - out_be32(&fec->gaddr1, 0xffffffff); - out_be32(&fec->gaddr2, 0xffffffff); - } else { - u32 crc; - struct netdev_hw_addr *ha; - u32 gaddr1 = 0x00000000; - u32 gaddr2 = 0x00000000; - - netdev_for_each_mc_addr(ha, dev) { - crc = ether_crc_le(6, ha->addr) >> 26; - if (crc >= 32) - gaddr1 |= 1 << (crc-32); - else - gaddr2 |= 1 << crc; - } - out_be32(&fec->gaddr1, gaddr1); - out_be32(&fec->gaddr2, gaddr2); - } - } -} - -/** - * mpc52xx_fec_hw_init - * @dev: network device - * - * Setup various hardware setting, only needed once on start - */ -static void mpc52xx_fec_hw_init(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct mpc52xx_fec __iomem *fec = priv->fec; - int i; - - /* Whack a reset. We should wait for this. */ - out_be32(&fec->ecntrl, FEC_ECNTRL_RESET); - for (i = 0; i < FEC_RESET_DELAY; ++i) { - if ((in_be32(&fec->ecntrl) & FEC_ECNTRL_RESET) == 0) - break; - udelay(1); - } - if (i == FEC_RESET_DELAY) - dev_err(&dev->dev, "FEC Reset timeout!\n"); - - /* set pause to 0x20 frames */ - out_be32(&fec->op_pause, FEC_OP_PAUSE_OPCODE | 0x20); - - /* high service request will be deasserted when there's < 7 bytes in fifo - * low service request will be deasserted when there's < 4*7 bytes in fifo - */ - out_be32(&fec->rfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7); - out_be32(&fec->tfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7); - - /* alarm when <= x bytes in FIFO */ - out_be32(&fec->rfifo_alarm, 0x0000030c); - out_be32(&fec->tfifo_alarm, 0x00000100); - - /* begin transmittion when 256 bytes are in FIFO (or EOF or FIFO full) */ - out_be32(&fec->x_wmrk, FEC_FIFO_WMRK_256B); - - /* enable crc generation */ - out_be32(&fec->xmit_fsm, FEC_XMIT_FSM_APPEND_CRC | FEC_XMIT_FSM_ENABLE_CRC); - out_be32(&fec->iaddr1, 0x00000000); /* No individual filter */ - out_be32(&fec->iaddr2, 0x00000000); /* No individual filter */ - - /* set phy speed. - * this can't be done in phy driver, since it needs to be called - * before fec stuff (even on resume) */ - out_be32(&fec->mii_speed, priv->mdio_speed); -} - -/** - * mpc52xx_fec_start - * @dev: network device - * - * This function is called to start or restart the FEC during a link - * change. This happens on fifo errors or when switching between half - * and full duplex. - */ -static void mpc52xx_fec_start(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct mpc52xx_fec __iomem *fec = priv->fec; - u32 rcntrl; - u32 tcntrl; - u32 tmp; - - /* clear sticky error bits */ - tmp = FEC_FIFO_STATUS_ERR | FEC_FIFO_STATUS_UF | FEC_FIFO_STATUS_OF; - out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status) & tmp); - out_be32(&fec->tfifo_status, in_be32(&fec->tfifo_status) & tmp); - - /* FIFOs will reset on mpc52xx_fec_enable */ - out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_ENABLE_IS_RESET); - - /* Set station address. */ - mpc52xx_fec_set_paddr(dev, dev->dev_addr); - - mpc52xx_fec_set_multicast_list(dev); - - /* set max frame len, enable flow control, select mii mode */ - rcntrl = FEC_RX_BUFFER_SIZE << 16; /* max frame length */ - rcntrl |= FEC_RCNTRL_FCE; - - if (!priv->seven_wire_mode) - rcntrl |= FEC_RCNTRL_MII_MODE; - - if (priv->duplex == DUPLEX_FULL) - tcntrl = FEC_TCNTRL_FDEN; /* FD enable */ - else { - rcntrl |= FEC_RCNTRL_DRT; /* disable Rx on Tx (HD) */ - tcntrl = 0; - } - out_be32(&fec->r_cntrl, rcntrl); - out_be32(&fec->x_cntrl, tcntrl); - - /* Clear any outstanding interrupt. */ - out_be32(&fec->ievent, 0xffffffff); - - /* Enable interrupts we wish to service. */ - out_be32(&fec->imask, FEC_IMASK_ENABLE); - - /* And last, enable the transmit and receive processing. */ - out_be32(&fec->ecntrl, FEC_ECNTRL_ETHER_EN); - out_be32(&fec->r_des_active, 0x01000000); -} - -/** - * mpc52xx_fec_stop - * @dev: network device - * - * stop all activity on fec and empty dma buffers - */ -static void mpc52xx_fec_stop(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct mpc52xx_fec __iomem *fec = priv->fec; - unsigned long timeout; - - /* disable all interrupts */ - out_be32(&fec->imask, 0); - - /* Disable the rx task. */ - bcom_disable(priv->rx_dmatsk); - - /* Wait for tx queue to drain, but only if we're in process context */ - if (!in_interrupt()) { - timeout = jiffies + msecs_to_jiffies(2000); - while (time_before(jiffies, timeout) && - !bcom_queue_empty(priv->tx_dmatsk)) - msleep(100); - - if (time_after_eq(jiffies, timeout)) - dev_err(&dev->dev, "queues didn't drain\n"); -#if 1 - if (time_after_eq(jiffies, timeout)) { - dev_err(&dev->dev, " tx: index: %i, outdex: %i\n", - priv->tx_dmatsk->index, - priv->tx_dmatsk->outdex); - dev_err(&dev->dev, " rx: index: %i, outdex: %i\n", - priv->rx_dmatsk->index, - priv->rx_dmatsk->outdex); - } -#endif - } - - bcom_disable(priv->tx_dmatsk); - - /* Stop FEC */ - out_be32(&fec->ecntrl, in_be32(&fec->ecntrl) & ~FEC_ECNTRL_ETHER_EN); -} - -/* reset fec and bestcomm tasks */ -static void mpc52xx_fec_reset(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct mpc52xx_fec __iomem *fec = priv->fec; - - mpc52xx_fec_stop(dev); - - out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status)); - out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_RESET_FIFO); - - mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); - - mpc52xx_fec_hw_init(dev); - - bcom_fec_rx_reset(priv->rx_dmatsk); - bcom_fec_tx_reset(priv->tx_dmatsk); - - mpc52xx_fec_alloc_rx_buffers(dev, priv->rx_dmatsk); - - bcom_enable(priv->rx_dmatsk); - bcom_enable(priv->tx_dmatsk); - - mpc52xx_fec_start(dev); - - netif_wake_queue(dev); -} - - -/* ethtool interface */ - -static int mpc52xx_fec_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - - if (!priv->phydev) - return -ENODEV; - - return phy_ethtool_gset(priv->phydev, cmd); -} - -static int mpc52xx_fec_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - - if (!priv->phydev) - return -ENODEV; - - return phy_ethtool_sset(priv->phydev, cmd); -} - -static u32 mpc52xx_fec_get_msglevel(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - return priv->msg_enable; -} - -static void mpc52xx_fec_set_msglevel(struct net_device *dev, u32 level) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - priv->msg_enable = level; -} - -static const struct ethtool_ops mpc52xx_fec_ethtool_ops = { - .get_settings = mpc52xx_fec_get_settings, - .set_settings = mpc52xx_fec_set_settings, - .get_link = ethtool_op_get_link, - .get_msglevel = mpc52xx_fec_get_msglevel, - .set_msglevel = mpc52xx_fec_set_msglevel, -}; - - -static int mpc52xx_fec_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - - if (!priv->phydev) - return -ENOTSUPP; - - return phy_mii_ioctl(priv->phydev, rq, cmd); -} - -static const struct net_device_ops mpc52xx_fec_netdev_ops = { - .ndo_open = mpc52xx_fec_open, - .ndo_stop = mpc52xx_fec_close, - .ndo_start_xmit = mpc52xx_fec_start_xmit, - .ndo_set_multicast_list = mpc52xx_fec_set_multicast_list, - .ndo_set_mac_address = mpc52xx_fec_set_mac_address, - .ndo_validate_addr = eth_validate_addr, - .ndo_do_ioctl = mpc52xx_fec_ioctl, - .ndo_change_mtu = eth_change_mtu, - .ndo_tx_timeout = mpc52xx_fec_tx_timeout, - .ndo_get_stats = mpc52xx_fec_get_stats, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = mpc52xx_fec_poll_controller, -#endif -}; - -/* ======================================================================== */ -/* OF Driver */ -/* ======================================================================== */ - -static int __devinit mpc52xx_fec_probe(struct platform_device *op) -{ - int rv; - struct net_device *ndev; - struct mpc52xx_fec_priv *priv = NULL; - struct resource mem; - const u32 *prop; - int prop_size; - - phys_addr_t rx_fifo; - phys_addr_t tx_fifo; - - /* Get the ether ndev & it's private zone */ - ndev = alloc_etherdev(sizeof(struct mpc52xx_fec_priv)); - if (!ndev) - return -ENOMEM; - - priv = netdev_priv(ndev); - priv->ndev = ndev; - - /* Reserve FEC control zone */ - rv = of_address_to_resource(op->dev.of_node, 0, &mem); - if (rv) { - printk(KERN_ERR DRIVER_NAME ": " - "Error while parsing device node resource\n" ); - goto err_netdev; - } - if (resource_size(&mem) < sizeof(struct mpc52xx_fec)) { - printk(KERN_ERR DRIVER_NAME - " - invalid resource size (%lx < %x), check mpc52xx_devices.c\n", - (unsigned long)resource_size(&mem), - sizeof(struct mpc52xx_fec)); - rv = -EINVAL; - goto err_netdev; - } - - if (!request_mem_region(mem.start, sizeof(struct mpc52xx_fec), - DRIVER_NAME)) { - rv = -EBUSY; - goto err_netdev; - } - - /* Init ether ndev with what we have */ - ndev->netdev_ops = &mpc52xx_fec_netdev_ops; - ndev->ethtool_ops = &mpc52xx_fec_ethtool_ops; - ndev->watchdog_timeo = FEC_WATCHDOG_TIMEOUT; - ndev->base_addr = mem.start; - SET_NETDEV_DEV(ndev, &op->dev); - - spin_lock_init(&priv->lock); - - /* ioremap the zones */ - priv->fec = ioremap(mem.start, sizeof(struct mpc52xx_fec)); - - if (!priv->fec) { - rv = -ENOMEM; - goto err_mem_region; - } - - /* Bestcomm init */ - rx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, rfifo_data); - tx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, tfifo_data); - - priv->rx_dmatsk = bcom_fec_rx_init(FEC_RX_NUM_BD, rx_fifo, FEC_RX_BUFFER_SIZE); - priv->tx_dmatsk = bcom_fec_tx_init(FEC_TX_NUM_BD, tx_fifo); - - if (!priv->rx_dmatsk || !priv->tx_dmatsk) { - printk(KERN_ERR DRIVER_NAME ": Can not init SDMA tasks\n" ); - rv = -ENOMEM; - goto err_rx_tx_dmatsk; - } - - /* Get the IRQ we need one by one */ - /* Control */ - ndev->irq = irq_of_parse_and_map(op->dev.of_node, 0); - - /* RX */ - priv->r_irq = bcom_get_task_irq(priv->rx_dmatsk); - - /* TX */ - priv->t_irq = bcom_get_task_irq(priv->tx_dmatsk); - - /* MAC address init */ - if (!is_zero_ether_addr(mpc52xx_fec_mac_addr)) - memcpy(ndev->dev_addr, mpc52xx_fec_mac_addr, 6); - else - mpc52xx_fec_get_paddr(ndev, ndev->dev_addr); - - priv->msg_enable = netif_msg_init(debug, MPC52xx_MESSAGES_DEFAULT); - - /* - * Link mode configuration - */ - - /* Start with safe defaults for link connection */ - priv->speed = 100; - priv->duplex = DUPLEX_HALF; - priv->mdio_speed = ((mpc5xxx_get_bus_frequency(op->dev.of_node) >> 20) / 5) << 1; - - /* The current speed preconfigures the speed of the MII link */ - prop = of_get_property(op->dev.of_node, "current-speed", &prop_size); - if (prop && (prop_size >= sizeof(u32) * 2)) { - priv->speed = prop[0]; - priv->duplex = prop[1] ? DUPLEX_FULL : DUPLEX_HALF; - } - - /* If there is a phy handle, then get the PHY node */ - priv->phy_node = of_parse_phandle(op->dev.of_node, "phy-handle", 0); - - /* the 7-wire property means don't use MII mode */ - if (of_find_property(op->dev.of_node, "fsl,7-wire-mode", NULL)) { - priv->seven_wire_mode = 1; - dev_info(&ndev->dev, "using 7-wire PHY mode\n"); - } - - /* Hardware init */ - mpc52xx_fec_hw_init(ndev); - mpc52xx_fec_reset_stats(ndev); - - rv = register_netdev(ndev); - if (rv < 0) - goto err_node; - - /* We're done ! */ - dev_set_drvdata(&op->dev, ndev); - - return 0; - -err_node: - of_node_put(priv->phy_node); - irq_dispose_mapping(ndev->irq); -err_rx_tx_dmatsk: - if (priv->rx_dmatsk) - bcom_fec_rx_release(priv->rx_dmatsk); - if (priv->tx_dmatsk) - bcom_fec_tx_release(priv->tx_dmatsk); - iounmap(priv->fec); -err_mem_region: - release_mem_region(mem.start, sizeof(struct mpc52xx_fec)); -err_netdev: - free_netdev(ndev); - - return rv; -} - -static int -mpc52xx_fec_remove(struct platform_device *op) -{ - struct net_device *ndev; - struct mpc52xx_fec_priv *priv; - - ndev = dev_get_drvdata(&op->dev); - priv = netdev_priv(ndev); - - unregister_netdev(ndev); - - if (priv->phy_node) - of_node_put(priv->phy_node); - priv->phy_node = NULL; - - irq_dispose_mapping(ndev->irq); - - bcom_fec_rx_release(priv->rx_dmatsk); - bcom_fec_tx_release(priv->tx_dmatsk); - - iounmap(priv->fec); - - release_mem_region(ndev->base_addr, sizeof(struct mpc52xx_fec)); - - free_netdev(ndev); - - dev_set_drvdata(&op->dev, NULL); - return 0; -} - -#ifdef CONFIG_PM -static int mpc52xx_fec_of_suspend(struct platform_device *op, pm_message_t state) -{ - struct net_device *dev = dev_get_drvdata(&op->dev); - - if (netif_running(dev)) - mpc52xx_fec_close(dev); - - return 0; -} - -static int mpc52xx_fec_of_resume(struct platform_device *op) -{ - struct net_device *dev = dev_get_drvdata(&op->dev); - - mpc52xx_fec_hw_init(dev); - mpc52xx_fec_reset_stats(dev); - - if (netif_running(dev)) - mpc52xx_fec_open(dev); - - return 0; -} -#endif - -static struct of_device_id mpc52xx_fec_match[] = { - { .compatible = "fsl,mpc5200b-fec", }, - { .compatible = "fsl,mpc5200-fec", }, - { .compatible = "mpc5200-fec", }, - { } -}; - -MODULE_DEVICE_TABLE(of, mpc52xx_fec_match); - -static struct platform_driver mpc52xx_fec_driver = { - .driver = { - .name = DRIVER_NAME, - .owner = THIS_MODULE, - .of_match_table = mpc52xx_fec_match, - }, - .probe = mpc52xx_fec_probe, - .remove = mpc52xx_fec_remove, -#ifdef CONFIG_PM - .suspend = mpc52xx_fec_of_suspend, - .resume = mpc52xx_fec_of_resume, -#endif -}; - - -/* ======================================================================== */ -/* Module */ -/* ======================================================================== */ - -static int __init -mpc52xx_fec_init(void) -{ -#ifdef CONFIG_FEC_MPC52xx_MDIO - int ret; - ret = platform_driver_register(&mpc52xx_fec_mdio_driver); - if (ret) { - printk(KERN_ERR DRIVER_NAME ": failed to register mdio driver\n"); - return ret; - } -#endif - return platform_driver_register(&mpc52xx_fec_driver); -} - -static void __exit -mpc52xx_fec_exit(void) -{ - platform_driver_unregister(&mpc52xx_fec_driver); -#ifdef CONFIG_FEC_MPC52xx_MDIO - platform_driver_unregister(&mpc52xx_fec_mdio_driver); -#endif -} - - -module_init(mpc52xx_fec_init); -module_exit(mpc52xx_fec_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Dale Farnsworth"); -MODULE_DESCRIPTION("Ethernet driver for the Freescale MPC52xx FEC"); |