net: fec: build fec.c and fec_ptp.c to one module
authorFrank Li <Frank.Li@freescale.com>
Sun, 24 Mar 2013 15:03:42 +0000 (15:03 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 25 Mar 2013 16:14:57 +0000 (12:14 -0400)
fec_ptp.ko can't run individually
rename fec.c to fec_main.c
Build fec.o and fec_ptp.o into one fec.ko
Remove unnessary EXPORT_SYMBOL in fec_ptp

Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/freescale/Makefile
drivers/net/ethernet/freescale/fec.c [deleted file]
drivers/net/ethernet/freescale/fec_main.c [new file with mode: 0644]
drivers/net/ethernet/freescale/fec_ptp.c

index b7d58fe6f531635acebc3d4d7c00e80fc63414e7..549ce13b92acee78b6559e360c427c8720b7493b 100644 (file)
@@ -2,7 +2,8 @@
 # Makefile for the Freescale network device drivers.
 #
 
-obj-$(CONFIG_FEC) += fec.o fec_ptp.o
+obj-$(CONFIG_FEC) += fec.o
+fec-objs :=fec_main.o fec_ptp.o
 obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx.o
 ifeq ($(CONFIG_FEC_MPC52xx_MDIO),y)
        obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx_phy.o
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
deleted file mode 100644 (file)
index 3eb608f..0000000
+++ /dev/null
@@ -1,1966 +0,0 @@
-/*
- * Fast Ethernet Controller (FEC) driver for Motorola MPC8xx.
- * Copyright (c) 1997 Dan Malek (dmalek@jlc.net)
- *
- * Right now, I am very wasteful with the buffers.  I allocate memory
- * pages and then divide them into 2K frame buffers.  This way I know I
- * have buffers large enough to hold one frame within one buffer descriptor.
- * Once I get this working, I will use 64 or 128 byte CPM buffers, which
- * will be much more memory efficient and will easily handle lots of
- * small packets.
- *
- * Much better multiple PHY support by Magnus Damm.
- * Copyright (c) 2000 Ericsson Radio Systems AB.
- *
- * Support for FEC controller of ColdFire processors.
- * Copyright (c) 2001-2005 Greg Ungerer (gerg@snapgear.com)
- *
- * Bug fixes and cleanup by Philippe De Muyter (phdm@macqel.be)
- * Copyright (c) 2004-2006 Macq Electronique SA.
- *
- * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/ptrace.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/spinlock.h>
-#include <linux/workqueue.h>
-#include <linux/bitops.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/clk.h>
-#include <linux/platform_device.h>
-#include <linux/phy.h>
-#include <linux/fec.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_gpio.h>
-#include <linux/of_net.h>
-#include <linux/pinctrl/consumer.h>
-#include <linux/regulator/consumer.h>
-
-#include <asm/cacheflush.h>
-
-#ifndef CONFIG_ARM
-#include <asm/coldfire.h>
-#include <asm/mcfsim.h>
-#endif
-
-#include "fec.h"
-
-#if defined(CONFIG_ARM)
-#define FEC_ALIGNMENT  0xf
-#else
-#define FEC_ALIGNMENT  0x3
-#endif
-
-#define DRIVER_NAME    "fec"
-#define FEC_NAPI_WEIGHT        64
-
-/* Pause frame feild and FIFO threshold */
-#define FEC_ENET_FCE   (1 << 5)
-#define FEC_ENET_RSEM_V        0x84
-#define FEC_ENET_RSFL_V        16
-#define FEC_ENET_RAEM_V        0x8
-#define FEC_ENET_RAFL_V        0x8
-#define FEC_ENET_OPD_V 0xFFF0
-
-/* Controller is ENET-MAC */
-#define FEC_QUIRK_ENET_MAC             (1 << 0)
-/* Controller needs driver to swap frame */
-#define FEC_QUIRK_SWAP_FRAME           (1 << 1)
-/* Controller uses gasket */
-#define FEC_QUIRK_USE_GASKET           (1 << 2)
-/* Controller has GBIT support */
-#define FEC_QUIRK_HAS_GBIT             (1 << 3)
-/* Controller has extend desc buffer */
-#define FEC_QUIRK_HAS_BUFDESC_EX       (1 << 4)
-
-static struct platform_device_id fec_devtype[] = {
-       {
-               /* keep it for coldfire */
-               .name = DRIVER_NAME,
-               .driver_data = 0,
-       }, {
-               .name = "imx25-fec",
-               .driver_data = FEC_QUIRK_USE_GASKET,
-       }, {
-               .name = "imx27-fec",
-               .driver_data = 0,
-       }, {
-               .name = "imx28-fec",
-               .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_SWAP_FRAME,
-       }, {
-               .name = "imx6q-fec",
-               .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_GBIT |
-                               FEC_QUIRK_HAS_BUFDESC_EX,
-       }, {
-               /* sentinel */
-       }
-};
-MODULE_DEVICE_TABLE(platform, fec_devtype);
-
-enum imx_fec_type {
-       IMX25_FEC = 1,  /* runs on i.mx25/50/53 */
-       IMX27_FEC,      /* runs on i.mx27/35/51 */
-       IMX28_FEC,
-       IMX6Q_FEC,
-};
-
-static const struct of_device_id fec_dt_ids[] = {
-       { .compatible = "fsl,imx25-fec", .data = &fec_devtype[IMX25_FEC], },
-       { .compatible = "fsl,imx27-fec", .data = &fec_devtype[IMX27_FEC], },
-       { .compatible = "fsl,imx28-fec", .data = &fec_devtype[IMX28_FEC], },
-       { .compatible = "fsl,imx6q-fec", .data = &fec_devtype[IMX6Q_FEC], },
-       { /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, fec_dt_ids);
-
-static unsigned char macaddr[ETH_ALEN];
-module_param_array(macaddr, byte, NULL, 0);
-MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
-
-#if defined(CONFIG_M5272)
-/*
- * Some hardware gets it MAC address out of local flash memory.
- * if this is non-zero then assume it is the address to get MAC from.
- */
-#if defined(CONFIG_NETtel)
-#define        FEC_FLASHMAC    0xf0006006
-#elif defined(CONFIG_GILBARCONAP) || defined(CONFIG_SCALES)
-#define        FEC_FLASHMAC    0xf0006000
-#elif defined(CONFIG_CANCam)
-#define        FEC_FLASHMAC    0xf0020000
-#elif defined (CONFIG_M5272C3)
-#define        FEC_FLASHMAC    (0xffe04000 + 4)
-#elif defined(CONFIG_MOD5272)
-#define FEC_FLASHMAC   0xffc0406b
-#else
-#define        FEC_FLASHMAC    0
-#endif
-#endif /* CONFIG_M5272 */
-
-#if (((RX_RING_SIZE + TX_RING_SIZE) * 32) > PAGE_SIZE)
-#error "FEC: descriptor ring size constants too large"
-#endif
-
-/* Interrupt events/masks. */
-#define FEC_ENET_HBERR ((uint)0x80000000)      /* Heartbeat error */
-#define FEC_ENET_BABR  ((uint)0x40000000)      /* Babbling receiver */
-#define FEC_ENET_BABT  ((uint)0x20000000)      /* Babbling transmitter */
-#define FEC_ENET_GRA   ((uint)0x10000000)      /* Graceful stop complete */
-#define FEC_ENET_TXF   ((uint)0x08000000)      /* Full frame transmitted */
-#define FEC_ENET_TXB   ((uint)0x04000000)      /* A buffer was transmitted */
-#define FEC_ENET_RXF   ((uint)0x02000000)      /* Full frame received */
-#define FEC_ENET_RXB   ((uint)0x01000000)      /* A buffer was received */
-#define FEC_ENET_MII   ((uint)0x00800000)      /* MII interrupt */
-#define FEC_ENET_EBERR ((uint)0x00400000)      /* SDMA bus error */
-
-#define FEC_DEFAULT_IMASK (FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII)
-#define FEC_RX_DISABLED_IMASK (FEC_DEFAULT_IMASK & (~FEC_ENET_RXF))
-
-/* The FEC stores dest/src/type, data, and checksum for receive packets.
- */
-#define PKT_MAXBUF_SIZE                1518
-#define PKT_MINBUF_SIZE                64
-#define PKT_MAXBLR_SIZE                1520
-
-/*
- * The 5270/5271/5280/5282/532x RX control register also contains maximum frame
- * size bits. Other FEC hardware does not, so we need to take that into
- * account when setting it.
- */
-#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
-    defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM)
-#define        OPT_FRAME_SIZE  (PKT_MAXBUF_SIZE << 16)
-#else
-#define        OPT_FRAME_SIZE  0
-#endif
-
-/* FEC MII MMFR bits definition */
-#define FEC_MMFR_ST            (1 << 30)
-#define FEC_MMFR_OP_READ       (2 << 28)
-#define FEC_MMFR_OP_WRITE      (1 << 28)
-#define FEC_MMFR_PA(v)         ((v & 0x1f) << 23)
-#define FEC_MMFR_RA(v)         ((v & 0x1f) << 18)
-#define FEC_MMFR_TA            (2 << 16)
-#define FEC_MMFR_DATA(v)       (v & 0xffff)
-
-#define FEC_MII_TIMEOUT                30000 /* us */
-
-/* Transmitter timeout */
-#define TX_TIMEOUT (2 * HZ)
-
-#define FEC_PAUSE_FLAG_AUTONEG 0x1
-#define FEC_PAUSE_FLAG_ENABLE  0x2
-
-static int mii_cnt;
-
-static struct bufdesc *fec_enet_get_nextdesc(struct bufdesc *bdp, int is_ex)
-{
-       struct bufdesc_ex *ex = (struct bufdesc_ex *)bdp;
-       if (is_ex)
-               return (struct bufdesc *)(ex + 1);
-       else
-               return bdp + 1;
-}
-
-static struct bufdesc *fec_enet_get_prevdesc(struct bufdesc *bdp, int is_ex)
-{
-       struct bufdesc_ex *ex = (struct bufdesc_ex *)bdp;
-       if (is_ex)
-               return (struct bufdesc *)(ex - 1);
-       else
-               return bdp - 1;
-}
-
-static void *swap_buffer(void *bufaddr, int len)
-{
-       int i;
-       unsigned int *buf = bufaddr;
-
-       for (i = 0; i < (len + 3) / 4; i++, buf++)
-               *buf = cpu_to_be32(*buf);
-
-       return bufaddr;
-}
-
-static netdev_tx_t
-fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       const struct platform_device_id *id_entry =
-                               platform_get_device_id(fep->pdev);
-       struct bufdesc *bdp;
-       void *bufaddr;
-       unsigned short  status;
-       unsigned int index;
-
-       if (!fep->link) {
-               /* Link is down or autonegotiation is in progress. */
-               return NETDEV_TX_BUSY;
-       }
-
-       /* Fill in a Tx ring entry */
-       bdp = fep->cur_tx;
-
-       status = bdp->cbd_sc;
-
-       if (status & BD_ENET_TX_READY) {
-               /* Ooops.  All transmit buffers are full.  Bail out.
-                * This should not happen, since ndev->tbusy should be set.
-                */
-               printk("%s: tx queue full!.\n", ndev->name);
-               return NETDEV_TX_BUSY;
-       }
-
-       /* Clear all of the status flags */
-       status &= ~BD_ENET_TX_STATS;
-
-       /* Set buffer length and buffer pointer */
-       bufaddr = skb->data;
-       bdp->cbd_datlen = skb->len;
-
-       /*
-        * On some FEC implementations data must be aligned on
-        * 4-byte boundaries. Use bounce buffers to copy data
-        * and get it aligned. Ugh.
-        */
-       if (fep->bufdesc_ex)
-               index = (struct bufdesc_ex *)bdp -
-                       (struct bufdesc_ex *)fep->tx_bd_base;
-       else
-               index = bdp - fep->tx_bd_base;
-
-       if (((unsigned long) bufaddr) & FEC_ALIGNMENT) {
-               memcpy(fep->tx_bounce[index], skb->data, skb->len);
-               bufaddr = fep->tx_bounce[index];
-       }
-
-       /*
-        * Some design made an incorrect assumption on endian mode of
-        * the system that it's running on. As the result, driver has to
-        * swap every frame going to and coming from the controller.
-        */
-       if (id_entry->driver_data & FEC_QUIRK_SWAP_FRAME)
-               swap_buffer(bufaddr, skb->len);
-
-       /* Save skb pointer */
-       fep->tx_skbuff[index] = skb;
-
-       /* Push the data cache so the CPM does not get stale memory
-        * data.
-        */
-       bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, bufaddr,
-                       FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE);
-
-       /* Send it on its way.  Tell FEC it's ready, interrupt when done,
-        * it's the last BD of the frame, and to put the CRC on the end.
-        */
-       status |= (BD_ENET_TX_READY | BD_ENET_TX_INTR
-                       | BD_ENET_TX_LAST | BD_ENET_TX_TC);
-       bdp->cbd_sc = status;
-
-       if (fep->bufdesc_ex) {
-
-               struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
-               ebdp->cbd_bdu = 0;
-               if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
-                       fep->hwts_tx_en)) {
-                       ebdp->cbd_esc = (BD_ENET_TX_TS | BD_ENET_TX_INT);
-                       skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
-               } else {
-
-                       ebdp->cbd_esc = BD_ENET_TX_INT;
-               }
-       }
-       /* If this was the last BD in the ring, start at the beginning again. */
-       if (status & BD_ENET_TX_WRAP)
-               bdp = fep->tx_bd_base;
-       else
-               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
-
-       fep->cur_tx = bdp;
-
-       if (fep->cur_tx == fep->dirty_tx)
-               netif_stop_queue(ndev);
-
-       /* Trigger transmission start */
-       writel(0, fep->hwp + FEC_X_DES_ACTIVE);
-
-       skb_tx_timestamp(skb);
-
-       return NETDEV_TX_OK;
-}
-
-/* This function is called to start or restart the FEC during a link
- * change.  This only happens when switching between half and full
- * duplex.
- */
-static void
-fec_restart(struct net_device *ndev, int duplex)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       const struct platform_device_id *id_entry =
-                               platform_get_device_id(fep->pdev);
-       int i;
-       u32 temp_mac[2];
-       u32 rcntl = OPT_FRAME_SIZE | 0x04;
-       u32 ecntl = 0x2; /* ETHEREN */
-
-       /* Whack a reset.  We should wait for this. */
-       writel(1, fep->hwp + FEC_ECNTRL);
-       udelay(10);
-
-       /*
-        * enet-mac reset will reset mac address registers too,
-        * so need to reconfigure it.
-        */
-       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
-               memcpy(&temp_mac, ndev->dev_addr, ETH_ALEN);
-               writel(cpu_to_be32(temp_mac[0]), fep->hwp + FEC_ADDR_LOW);
-               writel(cpu_to_be32(temp_mac[1]), fep->hwp + FEC_ADDR_HIGH);
-       }
-
-       /* Clear any outstanding interrupt. */
-       writel(0xffc00000, fep->hwp + FEC_IEVENT);
-
-       /* Reset all multicast. */
-       writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
-       writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
-#ifndef CONFIG_M5272
-       writel(0, fep->hwp + FEC_HASH_TABLE_HIGH);
-       writel(0, fep->hwp + FEC_HASH_TABLE_LOW);
-#endif
-
-       /* Set maximum receive buffer size. */
-       writel(PKT_MAXBLR_SIZE, fep->hwp + FEC_R_BUFF_SIZE);
-
-       /* Set receive and transmit descriptor base. */
-       writel(fep->bd_dma, fep->hwp + FEC_R_DES_START);
-       if (fep->bufdesc_ex)
-               writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc_ex)
-                       * RX_RING_SIZE, fep->hwp + FEC_X_DES_START);
-       else
-               writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc)
-                       * RX_RING_SIZE, fep->hwp + FEC_X_DES_START);
-
-       fep->cur_rx = fep->rx_bd_base;
-
-       for (i = 0; i <= TX_RING_MOD_MASK; i++) {
-               if (fep->tx_skbuff[i]) {
-                       dev_kfree_skb_any(fep->tx_skbuff[i]);
-                       fep->tx_skbuff[i] = NULL;
-               }
-       }
-
-       /* Enable MII mode */
-       if (duplex) {
-               /* FD enable */
-               writel(0x04, fep->hwp + FEC_X_CNTRL);
-       } else {
-               /* No Rcv on Xmit */
-               rcntl |= 0x02;
-               writel(0x0, fep->hwp + FEC_X_CNTRL);
-       }
-
-       fep->full_duplex = duplex;
-
-       /* Set MII speed */
-       writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
-
-       /*
-        * The phy interface and speed need to get configured
-        * differently on enet-mac.
-        */
-       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
-               /* Enable flow control and length check */
-               rcntl |= 0x40000000 | 0x00000020;
-
-               /* RGMII, RMII or MII */
-               if (fep->phy_interface == PHY_INTERFACE_MODE_RGMII)
-                       rcntl |= (1 << 6);
-               else if (fep->phy_interface == PHY_INTERFACE_MODE_RMII)
-                       rcntl |= (1 << 8);
-               else
-                       rcntl &= ~(1 << 8);
-
-               /* 1G, 100M or 10M */
-               if (fep->phy_dev) {
-                       if (fep->phy_dev->speed == SPEED_1000)
-                               ecntl |= (1 << 5);
-                       else if (fep->phy_dev->speed == SPEED_100)
-                               rcntl &= ~(1 << 9);
-                       else
-                               rcntl |= (1 << 9);
-               }
-       } else {
-#ifdef FEC_MIIGSK_ENR
-               if (id_entry->driver_data & FEC_QUIRK_USE_GASKET) {
-                       u32 cfgr;
-                       /* disable the gasket and wait */
-                       writel(0, fep->hwp + FEC_MIIGSK_ENR);
-                       while (readl(fep->hwp + FEC_MIIGSK_ENR) & 4)
-                               udelay(1);
-
-                       /*
-                        * configure the gasket:
-                        *   RMII, 50 MHz, no loopback, no echo
-                        *   MII, 25 MHz, no loopback, no echo
-                        */
-                       cfgr = (fep->phy_interface == PHY_INTERFACE_MODE_RMII)
-                               ? BM_MIIGSK_CFGR_RMII : BM_MIIGSK_CFGR_MII;
-                       if (fep->phy_dev && fep->phy_dev->speed == SPEED_10)
-                               cfgr |= BM_MIIGSK_CFGR_FRCONT_10M;
-                       writel(cfgr, fep->hwp + FEC_MIIGSK_CFGR);
-
-                       /* re-enable the gasket */
-                       writel(2, fep->hwp + FEC_MIIGSK_ENR);
-               }
-#endif
-       }
-
-       /* enable pause frame*/
-       if ((fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) ||
-           ((fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) &&
-            fep->phy_dev && fep->phy_dev->pause)) {
-               rcntl |= FEC_ENET_FCE;
-
-               /* set FIFO thresh hold parameter to reduce overrun */
-               writel(FEC_ENET_RSEM_V, fep->hwp + FEC_R_FIFO_RSEM);
-               writel(FEC_ENET_RSFL_V, fep->hwp + FEC_R_FIFO_RSFL);
-               writel(FEC_ENET_RAEM_V, fep->hwp + FEC_R_FIFO_RAEM);
-               writel(FEC_ENET_RAFL_V, fep->hwp + FEC_R_FIFO_RAFL);
-
-               /* OPD */
-               writel(FEC_ENET_OPD_V, fep->hwp + FEC_OPD);
-       } else {
-               rcntl &= ~FEC_ENET_FCE;
-       }
-
-       writel(rcntl, fep->hwp + FEC_R_CNTRL);
-
-       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
-               /* enable ENET endian swap */
-               ecntl |= (1 << 8);
-               /* enable ENET store and forward mode */
-               writel(1 << 8, fep->hwp + FEC_X_WMRK);
-       }
-
-       if (fep->bufdesc_ex)
-               ecntl |= (1 << 4);
-
-       /* And last, enable the transmit and receive processing */
-       writel(ecntl, fep->hwp + FEC_ECNTRL);
-       writel(0, fep->hwp + FEC_R_DES_ACTIVE);
-
-       if (fep->bufdesc_ex)
-               fec_ptp_start_cyclecounter(ndev);
-
-       /* Enable interrupts we wish to service */
-       writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
-}
-
-static void
-fec_stop(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       const struct platform_device_id *id_entry =
-                               platform_get_device_id(fep->pdev);
-       u32 rmii_mode = readl(fep->hwp + FEC_R_CNTRL) & (1 << 8);
-
-       /* We cannot expect a graceful transmit stop without link !!! */
-       if (fep->link) {
-               writel(1, fep->hwp + FEC_X_CNTRL); /* Graceful transmit stop */
-               udelay(10);
-               if (!(readl(fep->hwp + FEC_IEVENT) & FEC_ENET_GRA))
-                       printk("fec_stop : Graceful transmit stop did not complete !\n");
-       }
-
-       /* Whack a reset.  We should wait for this. */
-       writel(1, fep->hwp + FEC_ECNTRL);
-       udelay(10);
-       writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
-       writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
-
-       /* We have to keep ENET enabled to have MII interrupt stay working */
-       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
-               writel(2, fep->hwp + FEC_ECNTRL);
-               writel(rmii_mode, fep->hwp + FEC_R_CNTRL);
-       }
-}
-
-
-static void
-fec_timeout(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-
-       ndev->stats.tx_errors++;
-
-       fec_restart(ndev, fep->full_duplex);
-       netif_wake_queue(ndev);
-}
-
-static void
-fec_enet_tx(struct net_device *ndev)
-{
-       struct  fec_enet_private *fep;
-       struct bufdesc *bdp;
-       unsigned short status;
-       struct  sk_buff *skb;
-       int     index = 0;
-
-       fep = netdev_priv(ndev);
-       bdp = fep->dirty_tx;
-
-       /* get next bdp of dirty_tx */
-       if (bdp->cbd_sc & BD_ENET_TX_WRAP)
-               bdp = fep->tx_bd_base;
-       else
-               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
-
-       while (((status = bdp->cbd_sc) & BD_ENET_TX_READY) == 0) {
-
-               /* current queue is empty */
-               if (bdp == fep->cur_tx)
-                       break;
-
-               if (fep->bufdesc_ex)
-                       index = (struct bufdesc_ex *)bdp -
-                               (struct bufdesc_ex *)fep->tx_bd_base;
-               else
-                       index = bdp - fep->tx_bd_base;
-
-               dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr,
-                               FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE);
-               bdp->cbd_bufaddr = 0;
-
-               skb = fep->tx_skbuff[index];
-
-               /* Check for errors. */
-               if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC |
-                                  BD_ENET_TX_RL | BD_ENET_TX_UN |
-                                  BD_ENET_TX_CSL)) {
-                       ndev->stats.tx_errors++;
-                       if (status & BD_ENET_TX_HB)  /* No heartbeat */
-                               ndev->stats.tx_heartbeat_errors++;
-                       if (status & BD_ENET_TX_LC)  /* Late collision */
-                               ndev->stats.tx_window_errors++;
-                       if (status & BD_ENET_TX_RL)  /* Retrans limit */
-                               ndev->stats.tx_aborted_errors++;
-                       if (status & BD_ENET_TX_UN)  /* Underrun */
-                               ndev->stats.tx_fifo_errors++;
-                       if (status & BD_ENET_TX_CSL) /* Carrier lost */
-                               ndev->stats.tx_carrier_errors++;
-               } else {
-                       ndev->stats.tx_packets++;
-               }
-
-               if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS) &&
-                       fep->bufdesc_ex) {
-                       struct skb_shared_hwtstamps shhwtstamps;
-                       unsigned long flags;
-                       struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
-
-                       memset(&shhwtstamps, 0, sizeof(shhwtstamps));
-                       spin_lock_irqsave(&fep->tmreg_lock, flags);
-                       shhwtstamps.hwtstamp = ns_to_ktime(
-                               timecounter_cyc2time(&fep->tc, ebdp->ts));
-                       spin_unlock_irqrestore(&fep->tmreg_lock, flags);
-                       skb_tstamp_tx(skb, &shhwtstamps);
-               }
-
-               if (status & BD_ENET_TX_READY)
-                       printk("HEY! Enet xmit interrupt and TX_READY.\n");
-
-               /* Deferred means some collisions occurred during transmit,
-                * but we eventually sent the packet OK.
-                */
-               if (status & BD_ENET_TX_DEF)
-                       ndev->stats.collisions++;
-
-               /* Free the sk buffer associated with this last transmit */
-               dev_kfree_skb_any(skb);
-               fep->tx_skbuff[index] = NULL;
-
-               fep->dirty_tx = bdp;
-
-               /* Update pointer to next buffer descriptor to be transmitted */
-               if (status & BD_ENET_TX_WRAP)
-                       bdp = fep->tx_bd_base;
-               else
-                       bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
-
-               /* Since we have freed up a buffer, the ring is no longer full
-                */
-               if (fep->dirty_tx != fep->cur_tx) {
-                       if (netif_queue_stopped(ndev))
-                               netif_wake_queue(ndev);
-               }
-       }
-       return;
-}
-
-
-/* During a receive, the cur_rx points to the current incoming buffer.
- * When we update through the ring, if the next incoming buffer has
- * not been given to the system, we just set the empty indicator,
- * effectively tossing the packet.
- */
-static int
-fec_enet_rx(struct net_device *ndev, int budget)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       const struct platform_device_id *id_entry =
-                               platform_get_device_id(fep->pdev);
-       struct bufdesc *bdp;
-       unsigned short status;
-       struct  sk_buff *skb;
-       ushort  pkt_len;
-       __u8 *data;
-       int     pkt_received = 0;
-
-#ifdef CONFIG_M532x
-       flush_cache_all();
-#endif
-
-       /* First, grab all of the stats for the incoming packet.
-        * These get messed up if we get called due to a busy condition.
-        */
-       bdp = fep->cur_rx;
-
-       while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) {
-
-               if (pkt_received >= budget)
-                       break;
-               pkt_received++;
-
-               /* Since we have allocated space to hold a complete frame,
-                * the last indicator should be set.
-                */
-               if ((status & BD_ENET_RX_LAST) == 0)
-                       printk("FEC ENET: rcv is not +last\n");
-
-               if (!fep->opened)
-                       goto rx_processing_done;
-
-               /* Check for errors. */
-               if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO |
-                          BD_ENET_RX_CR | BD_ENET_RX_OV)) {
-                       ndev->stats.rx_errors++;
-                       if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH)) {
-                               /* Frame too long or too short. */
-                               ndev->stats.rx_length_errors++;
-                       }
-                       if (status & BD_ENET_RX_NO)     /* Frame alignment */
-                               ndev->stats.rx_frame_errors++;
-                       if (status & BD_ENET_RX_CR)     /* CRC Error */
-                               ndev->stats.rx_crc_errors++;
-                       if (status & BD_ENET_RX_OV)     /* FIFO overrun */
-                               ndev->stats.rx_fifo_errors++;
-               }
-
-               /* Report late collisions as a frame error.
-                * On this error, the BD is closed, but we don't know what we
-                * have in the buffer.  So, just drop this frame on the floor.
-                */
-               if (status & BD_ENET_RX_CL) {
-                       ndev->stats.rx_errors++;
-                       ndev->stats.rx_frame_errors++;
-                       goto rx_processing_done;
-               }
-
-               /* Process the incoming frame. */
-               ndev->stats.rx_packets++;
-               pkt_len = bdp->cbd_datlen;
-               ndev->stats.rx_bytes += pkt_len;
-               data = (__u8*)__va(bdp->cbd_bufaddr);
-
-               dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr,
-                               FEC_ENET_TX_FRSIZE, DMA_FROM_DEVICE);
-
-               if (id_entry->driver_data & FEC_QUIRK_SWAP_FRAME)
-                       swap_buffer(data, pkt_len);
-
-               /* This does 16 byte alignment, exactly what we need.
-                * The packet length includes FCS, but we don't want to
-                * include that when passing upstream as it messes up
-                * bridging applications.
-                */
-               skb = netdev_alloc_skb(ndev, pkt_len - 4 + NET_IP_ALIGN);
-
-               if (unlikely(!skb)) {
-                       ndev->stats.rx_dropped++;
-               } else {
-                       skb_reserve(skb, NET_IP_ALIGN);
-                       skb_put(skb, pkt_len - 4);      /* Make room */
-                       skb_copy_to_linear_data(skb, data, pkt_len - 4);
-                       skb->protocol = eth_type_trans(skb, ndev);
-
-                       /* Get receive timestamp from the skb */
-                       if (fep->hwts_rx_en && fep->bufdesc_ex) {
-                               struct skb_shared_hwtstamps *shhwtstamps =
-                                                           skb_hwtstamps(skb);
-                               unsigned long flags;
-                               struct bufdesc_ex *ebdp =
-                                       (struct bufdesc_ex *)bdp;
-
-                               memset(shhwtstamps, 0, sizeof(*shhwtstamps));
-
-                               spin_lock_irqsave(&fep->tmreg_lock, flags);
-                               shhwtstamps->hwtstamp = ns_to_ktime(
-                                   timecounter_cyc2time(&fep->tc, ebdp->ts));
-                               spin_unlock_irqrestore(&fep->tmreg_lock, flags);
-                       }
-
-                       if (!skb_defer_rx_timestamp(skb))
-                               napi_gro_receive(&fep->napi, skb);
-               }
-
-               bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, data,
-                               FEC_ENET_TX_FRSIZE, DMA_FROM_DEVICE);
-rx_processing_done:
-               /* Clear the status flags for this buffer */
-               status &= ~BD_ENET_RX_STATS;
-
-               /* Mark the buffer empty */
-               status |= BD_ENET_RX_EMPTY;
-               bdp->cbd_sc = status;
-
-               if (fep->bufdesc_ex) {
-                       struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
-
-                       ebdp->cbd_esc = BD_ENET_RX_INT;
-                       ebdp->cbd_prot = 0;
-                       ebdp->cbd_bdu = 0;
-               }
-
-               /* Update BD pointer to next entry */
-               if (status & BD_ENET_RX_WRAP)
-                       bdp = fep->rx_bd_base;
-               else
-                       bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
-               /* Doing this here will keep the FEC running while we process
-                * incoming frames.  On a heavily loaded network, we should be
-                * able to keep up at the expense of system resources.
-                */
-               writel(0, fep->hwp + FEC_R_DES_ACTIVE);
-       }
-       fep->cur_rx = bdp;
-
-       return pkt_received;
-}
-
-static irqreturn_t
-fec_enet_interrupt(int irq, void *dev_id)
-{
-       struct net_device *ndev = dev_id;
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       uint int_events;
-       irqreturn_t ret = IRQ_NONE;
-
-       do {
-               int_events = readl(fep->hwp + FEC_IEVENT);
-               writel(int_events, fep->hwp + FEC_IEVENT);
-
-               if (int_events & (FEC_ENET_RXF | FEC_ENET_TXF)) {
-                       ret = IRQ_HANDLED;
-
-                       /* Disable the RX interrupt */
-                       if (napi_schedule_prep(&fep->napi)) {
-                               writel(FEC_RX_DISABLED_IMASK,
-                                       fep->hwp + FEC_IMASK);
-                               __napi_schedule(&fep->napi);
-                       }
-               }
-
-               if (int_events & FEC_ENET_MII) {
-                       ret = IRQ_HANDLED;
-                       complete(&fep->mdio_done);
-               }
-       } while (int_events);
-
-       return ret;
-}
-
-static int fec_enet_rx_napi(struct napi_struct *napi, int budget)
-{
-       struct net_device *ndev = napi->dev;
-       int pkts = fec_enet_rx(ndev, budget);
-       struct fec_enet_private *fep = netdev_priv(ndev);
-
-       fec_enet_tx(ndev);
-
-       if (pkts < budget) {
-               napi_complete(napi);
-               writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
-       }
-       return pkts;
-}
-
-/* ------------------------------------------------------------------------- */
-static void fec_get_mac(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       struct fec_platform_data *pdata = fep->pdev->dev.platform_data;
-       unsigned char *iap, tmpaddr[ETH_ALEN];
-
-       /*
-        * try to get mac address in following order:
-        *
-        * 1) module parameter via kernel command line in form
-        *    fec.macaddr=0x00,0x04,0x9f,0x01,0x30,0xe0
-        */
-       iap = macaddr;
-
-#ifdef CONFIG_OF
-       /*
-        * 2) from device tree data
-        */
-       if (!is_valid_ether_addr(iap)) {
-               struct device_node *np = fep->pdev->dev.of_node;
-               if (np) {
-                       const char *mac = of_get_mac_address(np);
-                       if (mac)
-                               iap = (unsigned char *) mac;
-               }
-       }
-#endif
-
-       /*
-        * 3) from flash or fuse (via platform data)
-        */
-       if (!is_valid_ether_addr(iap)) {
-#ifdef CONFIG_M5272
-               if (FEC_FLASHMAC)
-                       iap = (unsigned char *)FEC_FLASHMAC;
-#else
-               if (pdata)
-                       iap = (unsigned char *)&pdata->mac;
-#endif
-       }
-
-       /*
-        * 4) FEC mac registers set by bootloader
-        */
-       if (!is_valid_ether_addr(iap)) {
-               *((unsigned long *) &tmpaddr[0]) =
-                       be32_to_cpu(readl(fep->hwp + FEC_ADDR_LOW));
-               *((unsigned short *) &tmpaddr[4]) =
-                       be16_to_cpu(readl(fep->hwp + FEC_ADDR_HIGH) >> 16);
-               iap = &tmpaddr[0];
-       }
-
-       memcpy(ndev->dev_addr, iap, ETH_ALEN);
-
-       /* Adjust MAC if using macaddr */
-       if (iap == macaddr)
-                ndev->dev_addr[ETH_ALEN-1] = macaddr[ETH_ALEN-1] + fep->dev_id;
-}
-
-/* ------------------------------------------------------------------------- */
-
-/*
- * Phy section
- */
-static void fec_enet_adjust_link(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       struct phy_device *phy_dev = fep->phy_dev;
-       unsigned long flags;
-
-       int status_change = 0;
-
-       spin_lock_irqsave(&fep->hw_lock, flags);
-
-       /* Prevent a state halted on mii error */
-       if (fep->mii_timeout && phy_dev->state == PHY_HALTED) {
-               phy_dev->state = PHY_RESUMING;
-               goto spin_unlock;
-       }
-
-       if (phy_dev->link) {
-               if (!fep->link) {
-                       fep->link = phy_dev->link;
-                       status_change = 1;
-               }
-
-               if (fep->full_duplex != phy_dev->duplex)
-                       status_change = 1;
-
-               if (phy_dev->speed != fep->speed) {
-                       fep->speed = phy_dev->speed;
-                       status_change = 1;
-               }
-
-               /* if any of the above changed restart the FEC */
-               if (status_change)
-                       fec_restart(ndev, phy_dev->duplex);
-       } else {
-               if (fep->link) {
-                       fec_stop(ndev);
-                       status_change = 1;
-               }
-       }
-
-spin_unlock:
-       spin_unlock_irqrestore(&fep->hw_lock, flags);
-
-       if (status_change)
-               phy_print_status(phy_dev);
-}
-
-static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
-{
-       struct fec_enet_private *fep = bus->priv;
-       unsigned long time_left;
-
-       fep->mii_timeout = 0;
-       init_completion(&fep->mdio_done);
-
-       /* start a read op */
-       writel(FEC_MMFR_ST | FEC_MMFR_OP_READ |
-               FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) |
-               FEC_MMFR_TA, fep->hwp + FEC_MII_DATA);
-
-       /* wait for end of transfer */
-       time_left = wait_for_completion_timeout(&fep->mdio_done,
-                       usecs_to_jiffies(FEC_MII_TIMEOUT));
-       if (time_left == 0) {
-               fep->mii_timeout = 1;
-               printk(KERN_ERR "FEC: MDIO read timeout\n");
-               return -ETIMEDOUT;
-       }
-
-       /* return value */
-       return FEC_MMFR_DATA(readl(fep->hwp + FEC_MII_DATA));
-}
-
-static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
-                          u16 value)
-{
-       struct fec_enet_private *fep = bus->priv;
-       unsigned long time_left;
-
-       fep->mii_timeout = 0;
-       init_completion(&fep->mdio_done);
-
-       /* start a write op */
-       writel(FEC_MMFR_ST | FEC_MMFR_OP_WRITE |
-               FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) |
-               FEC_MMFR_TA | FEC_MMFR_DATA(value),
-               fep->hwp + FEC_MII_DATA);
-
-       /* wait for end of transfer */
-       time_left = wait_for_completion_timeout(&fep->mdio_done,
-                       usecs_to_jiffies(FEC_MII_TIMEOUT));
-       if (time_left == 0) {
-               fep->mii_timeout = 1;
-               printk(KERN_ERR "FEC: MDIO write timeout\n");
-               return -ETIMEDOUT;
-       }
-
-       return 0;
-}
-
-static int fec_enet_mdio_reset(struct mii_bus *bus)
-{
-       return 0;
-}
-
-static int fec_enet_mii_probe(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       const struct platform_device_id *id_entry =
-                               platform_get_device_id(fep->pdev);
-       struct phy_device *phy_dev = NULL;
-       char mdio_bus_id[MII_BUS_ID_SIZE];
-       char phy_name[MII_BUS_ID_SIZE + 3];
-       int phy_id;
-       int dev_id = fep->dev_id;
-
-       fep->phy_dev = NULL;
-
-       /* check for attached phy */
-       for (phy_id = 0; (phy_id < PHY_MAX_ADDR); phy_id++) {
-               if ((fep->mii_bus->phy_mask & (1 << phy_id)))
-                       continue;
-               if (fep->mii_bus->phy_map[phy_id] == NULL)
-                       continue;
-               if (fep->mii_bus->phy_map[phy_id]->phy_id == 0)
-                       continue;
-               if (dev_id--)
-                       continue;
-               strncpy(mdio_bus_id, fep->mii_bus->id, MII_BUS_ID_SIZE);
-               break;
-       }
-
-       if (phy_id >= PHY_MAX_ADDR) {
-               printk(KERN_INFO
-                       "%s: no PHY, assuming direct connection to switch\n",
-                       ndev->name);
-               strncpy(mdio_bus_id, "fixed-0", MII_BUS_ID_SIZE);
-               phy_id = 0;
-       }
-
-       snprintf(phy_name, sizeof(phy_name), PHY_ID_FMT, mdio_bus_id, phy_id);
-       phy_dev = phy_connect(ndev, phy_name, &fec_enet_adjust_link,
-                             fep->phy_interface);
-       if (IS_ERR(phy_dev)) {
-               printk(KERN_ERR "%s: could not attach to PHY\n", ndev->name);
-               return PTR_ERR(phy_dev);
-       }
-
-       /* mask with MAC supported features */
-       if (id_entry->driver_data & FEC_QUIRK_HAS_GBIT) {
-               phy_dev->supported &= PHY_GBIT_FEATURES;
-               phy_dev->supported |= SUPPORTED_Pause;
-       }
-       else
-               phy_dev->supported &= PHY_BASIC_FEATURES;
-
-       phy_dev->advertising = phy_dev->supported;
-
-       fep->phy_dev = phy_dev;
-       fep->link = 0;
-       fep->full_duplex = 0;
-
-       printk(KERN_INFO
-               "%s: Freescale FEC PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n",
-               ndev->name,
-               fep->phy_dev->drv->name, dev_name(&fep->phy_dev->dev),
-               fep->phy_dev->irq);
-
-       return 0;
-}
-
-static int fec_enet_mii_init(struct platform_device *pdev)
-{
-       static struct mii_bus *fec0_mii_bus;
-       struct net_device *ndev = platform_get_drvdata(pdev);
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       const struct platform_device_id *id_entry =
-                               platform_get_device_id(fep->pdev);
-       int err = -ENXIO, i;
-
-       /*
-        * The dual fec interfaces are not equivalent with enet-mac.
-        * Here are the differences:
-        *
-        *  - fec0 supports MII & RMII modes while fec1 only supports RMII
-        *  - fec0 acts as the 1588 time master while fec1 is slave
-        *  - external phys can only be configured by fec0
-        *
-        * That is to say fec1 can not work independently. It only works
-        * when fec0 is working. The reason behind this design is that the
-        * second interface is added primarily for Switch mode.
-        *
-        * Because of the last point above, both phys are attached on fec0
-        * mdio interface in board design, and need to be configured by
-        * fec0 mii_bus.
-        */
-       if ((id_entry->driver_data & FEC_QUIRK_ENET_MAC) && fep->dev_id > 0) {
-               /* fec1 uses fec0 mii_bus */
-               if (mii_cnt && fec0_mii_bus) {
-                       fep->mii_bus = fec0_mii_bus;
-                       mii_cnt++;
-                       return 0;
-               }
-               return -ENOENT;
-       }
-
-       fep->mii_timeout = 0;
-
-       /*
-        * Set MII speed to 2.5 MHz (= clk_get_rate() / 2 * phy_speed)
-        *
-        * The formula for FEC MDC is 'ref_freq / (MII_SPEED x 2)' while
-        * for ENET-MAC is 'ref_freq / ((MII_SPEED + 1) x 2)'.  The i.MX28
-        * Reference Manual has an error on this, and gets fixed on i.MX6Q
-        * document.
-        */
-       fep->phy_speed = DIV_ROUND_UP(clk_get_rate(fep->clk_ahb), 5000000);
-       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC)
-               fep->phy_speed--;
-       fep->phy_speed <<= 1;
-       writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
-
-       fep->mii_bus = mdiobus_alloc();
-       if (fep->mii_bus == NULL) {
-               err = -ENOMEM;
-               goto err_out;
-       }
-
-       fep->mii_bus->name = "fec_enet_mii_bus";
-       fep->mii_bus->read = fec_enet_mdio_read;
-       fep->mii_bus->write = fec_enet_mdio_write;
-       fep->mii_bus->reset = fec_enet_mdio_reset;
-       snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
-               pdev->name, fep->dev_id + 1);
-       fep->mii_bus->priv = fep;
-       fep->mii_bus->parent = &pdev->dev;
-
-       fep->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
-       if (!fep->mii_bus->irq) {
-               err = -ENOMEM;
-               goto err_out_free_mdiobus;
-       }
-
-       for (i = 0; i < PHY_MAX_ADDR; i++)
-               fep->mii_bus->irq[i] = PHY_POLL;
-
-       if (mdiobus_register(fep->mii_bus))
-               goto err_out_free_mdio_irq;
-
-       mii_cnt++;
-
-       /* save fec0 mii_bus */
-       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC)
-               fec0_mii_bus = fep->mii_bus;
-
-       return 0;
-
-err_out_free_mdio_irq:
-       kfree(fep->mii_bus->irq);
-err_out_free_mdiobus:
-       mdiobus_free(fep->mii_bus);
-err_out:
-       return err;
-}
-
-static void fec_enet_mii_remove(struct fec_enet_private *fep)
-{
-       if (--mii_cnt == 0) {
-               mdiobus_unregister(fep->mii_bus);
-               kfree(fep->mii_bus->irq);
-               mdiobus_free(fep->mii_bus);
-       }
-}
-
-static int fec_enet_get_settings(struct net_device *ndev,
-                                 struct ethtool_cmd *cmd)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       struct phy_device *phydev = fep->phy_dev;
-
-       if (!phydev)
-               return -ENODEV;
-
-       return phy_ethtool_gset(phydev, cmd);
-}
-
-static int fec_enet_set_settings(struct net_device *ndev,
-                                struct ethtool_cmd *cmd)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       struct phy_device *phydev = fep->phy_dev;
-
-       if (!phydev)
-               return -ENODEV;
-
-       return phy_ethtool_sset(phydev, cmd);
-}
-
-static void fec_enet_get_drvinfo(struct net_device *ndev,
-                                struct ethtool_drvinfo *info)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-
-       strlcpy(info->driver, fep->pdev->dev.driver->name,
-               sizeof(info->driver));
-       strlcpy(info->version, "Revision: 1.0", sizeof(info->version));
-       strlcpy(info->bus_info, dev_name(&ndev->dev), sizeof(info->bus_info));
-}
-
-static int fec_enet_get_ts_info(struct net_device *ndev,
-                               struct ethtool_ts_info *info)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-
-       if (fep->bufdesc_ex) {
-
-               info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
-                                       SOF_TIMESTAMPING_RX_SOFTWARE |
-                                       SOF_TIMESTAMPING_SOFTWARE |
-                                       SOF_TIMESTAMPING_TX_HARDWARE |
-                                       SOF_TIMESTAMPING_RX_HARDWARE |
-                                       SOF_TIMESTAMPING_RAW_HARDWARE;
-               if (fep->ptp_clock)
-                       info->phc_index = ptp_clock_index(fep->ptp_clock);
-               else
-                       info->phc_index = -1;
-
-               info->tx_types = (1 << HWTSTAMP_TX_OFF) |
-                                (1 << HWTSTAMP_TX_ON);
-
-               info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
-                                  (1 << HWTSTAMP_FILTER_ALL);
-               return 0;
-       } else {
-               return ethtool_op_get_ts_info(ndev, info);
-       }
-}
-
-static void fec_enet_get_pauseparam(struct net_device *ndev,
-                                   struct ethtool_pauseparam *pause)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-
-       pause->autoneg = (fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) != 0;
-       pause->tx_pause = (fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) != 0;
-       pause->rx_pause = pause->tx_pause;
-}
-
-static int fec_enet_set_pauseparam(struct net_device *ndev,
-                                  struct ethtool_pauseparam *pause)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-
-       if (pause->tx_pause != pause->rx_pause) {
-               netdev_info(ndev,
-                       "hardware only support enable/disable both tx and rx");
-               return -EINVAL;
-       }
-
-       fep->pause_flag = 0;
-
-       /* tx pause must be same as rx pause */
-       fep->pause_flag |= pause->rx_pause ? FEC_PAUSE_FLAG_ENABLE : 0;
-       fep->pause_flag |= pause->autoneg ? FEC_PAUSE_FLAG_AUTONEG : 0;
-
-       if (pause->rx_pause || pause->autoneg) {
-               fep->phy_dev->supported |= ADVERTISED_Pause;
-               fep->phy_dev->advertising |= ADVERTISED_Pause;
-       } else {
-               fep->phy_dev->supported &= ~ADVERTISED_Pause;
-               fep->phy_dev->advertising &= ~ADVERTISED_Pause;
-       }
-
-       if (pause->autoneg) {
-               if (netif_running(ndev))
-                       fec_stop(ndev);
-               phy_start_aneg(fep->phy_dev);
-       }
-       if (netif_running(ndev))
-               fec_restart(ndev, 0);
-
-       return 0;
-}
-
-static const struct ethtool_ops fec_enet_ethtool_ops = {
-       .get_pauseparam         = fec_enet_get_pauseparam,
-       .set_pauseparam         = fec_enet_set_pauseparam,
-       .get_settings           = fec_enet_get_settings,
-       .set_settings           = fec_enet_set_settings,
-       .get_drvinfo            = fec_enet_get_drvinfo,
-       .get_link               = ethtool_op_get_link,
-       .get_ts_info            = fec_enet_get_ts_info,
-};
-
-static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       struct phy_device *phydev = fep->phy_dev;
-
-       if (!netif_running(ndev))
-               return -EINVAL;
-
-       if (!phydev)
-               return -ENODEV;
-
-       if (cmd == SIOCSHWTSTAMP && fep->bufdesc_ex)
-               return fec_ptp_ioctl(ndev, rq, cmd);
-
-       return phy_mii_ioctl(phydev, rq, cmd);
-}
-
-static void fec_enet_free_buffers(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       unsigned int i;
-       struct sk_buff *skb;
-       struct bufdesc  *bdp;
-
-       bdp = fep->rx_bd_base;
-       for (i = 0; i < RX_RING_SIZE; i++) {
-               skb = fep->rx_skbuff[i];
-
-               if (bdp->cbd_bufaddr)
-                       dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr,
-                                       FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE);
-               if (skb)
-                       dev_kfree_skb(skb);
-               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
-       }
-
-       bdp = fep->tx_bd_base;
-       for (i = 0; i < TX_RING_SIZE; i++)
-               kfree(fep->tx_bounce[i]);
-}
-
-static int fec_enet_alloc_buffers(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       unsigned int i;
-       struct sk_buff *skb;
-       struct bufdesc  *bdp;
-
-       bdp = fep->rx_bd_base;
-       for (i = 0; i < RX_RING_SIZE; i++) {
-               skb = netdev_alloc_skb(ndev, FEC_ENET_RX_FRSIZE);
-               if (!skb) {
-                       fec_enet_free_buffers(ndev);
-                       return -ENOMEM;
-               }
-               fep->rx_skbuff[i] = skb;
-
-               bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, skb->data,
-                               FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE);
-               bdp->cbd_sc = BD_ENET_RX_EMPTY;
-
-               if (fep->bufdesc_ex) {
-                       struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
-                       ebdp->cbd_esc = BD_ENET_RX_INT;
-               }
-
-               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
-       }
-
-       /* Set the last buffer to wrap. */
-       bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex);
-       bdp->cbd_sc |= BD_SC_WRAP;
-
-       bdp = fep->tx_bd_base;
-       for (i = 0; i < TX_RING_SIZE; i++) {
-               fep->tx_bounce[i] = kmalloc(FEC_ENET_TX_FRSIZE, GFP_KERNEL);
-
-               bdp->cbd_sc = 0;
-               bdp->cbd_bufaddr = 0;
-
-               if (fep->bufdesc_ex) {
-                       struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
-                       ebdp->cbd_esc = BD_ENET_RX_INT;
-               }
-
-               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
-       }
-
-       /* Set the last buffer to wrap. */
-       bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex);
-       bdp->cbd_sc |= BD_SC_WRAP;
-
-       return 0;
-}
-
-static int
-fec_enet_open(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       int ret;
-
-       napi_enable(&fep->napi);
-
-       /* I should reset the ring buffers here, but I don't yet know
-        * a simple way to do that.
-        */
-
-       ret = fec_enet_alloc_buffers(ndev);
-       if (ret)
-               return ret;
-
-       /* Probe and connect to PHY when open the interface */
-       ret = fec_enet_mii_probe(ndev);
-       if (ret) {
-               fec_enet_free_buffers(ndev);
-               return ret;
-       }
-       phy_start(fep->phy_dev);
-       netif_start_queue(ndev);
-       fep->opened = 1;
-       return 0;
-}
-
-static int
-fec_enet_close(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-
-       /* Don't know what to do yet. */
-       napi_disable(&fep->napi);
-       fep->opened = 0;
-       netif_stop_queue(ndev);
-       fec_stop(ndev);
-
-       if (fep->phy_dev) {
-               phy_stop(fep->phy_dev);
-               phy_disconnect(fep->phy_dev);
-       }
-
-       fec_enet_free_buffers(ndev);
-
-       return 0;
-}
-
-/* Set or clear the multicast filter for this adaptor.
- * Skeleton taken from sunlance driver.
- * The CPM Ethernet implementation allows Multicast as well as individual
- * MAC address filtering.  Some of the drivers check to make sure it is
- * a group multicast address, and discard those that are not.  I guess I
- * will do the same for now, but just remove the test if you want
- * individual filtering as well (do the upper net layers want or support
- * this kind of feature?).
- */
-
-#define HASH_BITS      6               /* #bits in hash */
-#define CRC32_POLY     0xEDB88320
-
-static void set_multicast_list(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       struct netdev_hw_addr *ha;
-       unsigned int i, bit, data, crc, tmp;
-       unsigned char hash;
-
-       if (ndev->flags & IFF_PROMISC) {
-               tmp = readl(fep->hwp + FEC_R_CNTRL);
-               tmp |= 0x8;
-               writel(tmp, fep->hwp + FEC_R_CNTRL);
-               return;
-       }
-
-       tmp = readl(fep->hwp + FEC_R_CNTRL);
-       tmp &= ~0x8;
-       writel(tmp, fep->hwp + FEC_R_CNTRL);
-
-       if (ndev->flags & IFF_ALLMULTI) {
-               /* Catch all multicast addresses, so set the
-                * filter to all 1's
-                */
-               writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
-               writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
-
-               return;
-       }
-
-       /* Clear filter and add the addresses in hash register
-        */
-       writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
-       writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
-
-       netdev_for_each_mc_addr(ha, ndev) {
-               /* calculate crc32 value of mac address */
-               crc = 0xffffffff;
-
-               for (i = 0; i < ndev->addr_len; i++) {
-                       data = ha->addr[i];
-                       for (bit = 0; bit < 8; bit++, data >>= 1) {
-                               crc = (crc >> 1) ^
-                               (((crc ^ data) & 1) ? CRC32_POLY : 0);
-                       }
-               }
-
-               /* only upper 6 bits (HASH_BITS) are used
-                * which point to specific bit in he hash registers
-                */
-               hash = (crc >> (32 - HASH_BITS)) & 0x3f;
-
-               if (hash > 31) {
-                       tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
-                       tmp |= 1 << (hash - 32);
-                       writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
-               } else {
-                       tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_LOW);
-                       tmp |= 1 << hash;
-                       writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
-               }
-       }
-}
-
-/* Set a MAC change in hardware. */
-static int
-fec_set_mac_address(struct net_device *ndev, void *p)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       struct sockaddr *addr = p;
-
-       if (!is_valid_ether_addr(addr->sa_data))
-               return -EADDRNOTAVAIL;
-
-       memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
-
-       writel(ndev->dev_addr[3] | (ndev->dev_addr[2] << 8) |
-               (ndev->dev_addr[1] << 16) | (ndev->dev_addr[0] << 24),
-               fep->hwp + FEC_ADDR_LOW);
-       writel((ndev->dev_addr[5] << 16) | (ndev->dev_addr[4] << 24),
-               fep->hwp + FEC_ADDR_HIGH);
-       return 0;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/**
- * fec_poll_controller - FEC Poll controller function
- * @dev: The FEC network adapter
- *
- * Polled functionality used by netconsole and others in non interrupt mode
- *
- */
-static void fec_poll_controller(struct net_device *dev)
-{
-       int i;
-       struct fec_enet_private *fep = netdev_priv(dev);
-
-       for (i = 0; i < FEC_IRQ_NUM; i++) {
-               if (fep->irq[i] > 0) {
-                       disable_irq(fep->irq[i]);
-                       fec_enet_interrupt(fep->irq[i], dev);
-                       enable_irq(fep->irq[i]);
-               }
-       }
-}
-#endif
-
-static const struct net_device_ops fec_netdev_ops = {
-       .ndo_open               = fec_enet_open,
-       .ndo_stop               = fec_enet_close,
-       .ndo_start_xmit         = fec_enet_start_xmit,
-       .ndo_set_rx_mode        = set_multicast_list,
-       .ndo_change_mtu         = eth_change_mtu,
-       .ndo_validate_addr      = eth_validate_addr,
-       .ndo_tx_timeout         = fec_timeout,
-       .ndo_set_mac_address    = fec_set_mac_address,
-       .ndo_do_ioctl           = fec_enet_ioctl,
-#ifdef CONFIG_NET_POLL_CONTROLLER
-       .ndo_poll_controller    = fec_poll_controller,
-#endif
-};
-
- /*
-  * XXX:  We need to clean up on failure exits here.
-  *
-  */
-static int fec_enet_init(struct net_device *ndev)
-{
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       struct bufdesc *cbd_base;
-       struct bufdesc *bdp;
-       unsigned int i;
-
-       /* Allocate memory for buffer descriptors. */
-       cbd_base = dma_alloc_coherent(NULL, PAGE_SIZE, &fep->bd_dma,
-                                     GFP_KERNEL);
-       if (!cbd_base)
-               return -ENOMEM;
-
-       spin_lock_init(&fep->hw_lock);
-
-       fep->netdev = ndev;
-
-       /* Get the Ethernet address */
-       fec_get_mac(ndev);
-
-       /* Set receive and transmit descriptor base. */
-       fep->rx_bd_base = cbd_base;
-       if (fep->bufdesc_ex)
-               fep->tx_bd_base = (struct bufdesc *)
-                       (((struct bufdesc_ex *)cbd_base) + RX_RING_SIZE);
-       else
-               fep->tx_bd_base = cbd_base + RX_RING_SIZE;
-
-       /* The FEC Ethernet specific entries in the device structure */
-       ndev->watchdog_timeo = TX_TIMEOUT;
-       ndev->netdev_ops = &fec_netdev_ops;
-       ndev->ethtool_ops = &fec_enet_ethtool_ops;
-
-       writel(FEC_RX_DISABLED_IMASK, fep->hwp + FEC_IMASK);
-       netif_napi_add(ndev, &fep->napi, fec_enet_rx_napi, FEC_NAPI_WEIGHT);
-
-       /* Initialize the receive buffer descriptors. */
-       bdp = fep->rx_bd_base;
-       for (i = 0; i < RX_RING_SIZE; i++) {
-
-               /* Initialize the BD for every fragment in the page. */
-               bdp->cbd_sc = 0;
-               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
-       }
-
-       /* Set the last buffer to wrap */
-       bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex);
-       bdp->cbd_sc |= BD_SC_WRAP;
-
-       /* ...and the same for transmit */
-       bdp = fep->tx_bd_base;
-       fep->cur_tx = bdp;
-       for (i = 0; i < TX_RING_SIZE; i++) {
-
-               /* Initialize the BD for every fragment in the page. */
-               bdp->cbd_sc = 0;
-               bdp->cbd_bufaddr = 0;
-               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
-       }
-
-       /* Set the last buffer to wrap */
-       bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex);
-       bdp->cbd_sc |= BD_SC_WRAP;
-       fep->dirty_tx = bdp;
-
-       fec_restart(ndev, 0);
-
-       return 0;
-}
-
-#ifdef CONFIG_OF
-static int fec_get_phy_mode_dt(struct platform_device *pdev)
-{
-       struct device_node *np = pdev->dev.of_node;
-
-       if (np)
-               return of_get_phy_mode(np);
-
-       return -ENODEV;
-}
-
-static void fec_reset_phy(struct platform_device *pdev)
-{
-       int err, phy_reset;
-       int msec = 1;
-       struct device_node *np = pdev->dev.of_node;
-
-       if (!np)
-               return;
-
-       of_property_read_u32(np, "phy-reset-duration", &msec);
-       /* A sane reset duration should not be longer than 1s */
-       if (msec > 1000)
-               msec = 1;
-
-       phy_reset = of_get_named_gpio(np, "phy-reset-gpios", 0);
-       if (!gpio_is_valid(phy_reset))
-               return;
-
-       err = devm_gpio_request_one(&pdev->dev, phy_reset,
-                                   GPIOF_OUT_INIT_LOW, "phy-reset");
-       if (err) {
-               dev_err(&pdev->dev, "failed to get phy-reset-gpios: %d\n", err);
-               return;
-       }
-       msleep(msec);
-       gpio_set_value(phy_reset, 1);
-}
-#else /* CONFIG_OF */
-static int fec_get_phy_mode_dt(struct platform_device *pdev)
-{
-       return -ENODEV;
-}
-
-static void fec_reset_phy(struct platform_device *pdev)
-{
-       /*
-        * In case of platform probe, the reset has been done
-        * by machine code.
-        */
-}
-#endif /* CONFIG_OF */
-
-static int
-fec_probe(struct platform_device *pdev)
-{
-       struct fec_enet_private *fep;
-       struct fec_platform_data *pdata;
-       struct net_device *ndev;
-       int i, irq, ret = 0;
-       struct resource *r;
-       const struct of_device_id *of_id;
-       static int dev_id;
-       struct pinctrl *pinctrl;
-       struct regulator *reg_phy;
-
-       of_id = of_match_device(fec_dt_ids, &pdev->dev);
-       if (of_id)
-               pdev->id_entry = of_id->data;
-
-       r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (!r)
-               return -ENXIO;
-
-       /* Init network device */
-       ndev = alloc_etherdev(sizeof(struct fec_enet_private));
-       if (!ndev)
-               return -ENOMEM;
-
-       SET_NETDEV_DEV(ndev, &pdev->dev);
-
-       /* setup board info structure */
-       fep = netdev_priv(ndev);
-
-       /* default enable pause frame auto negotiation */
-       if (pdev->id_entry &&
-           (pdev->id_entry->driver_data & FEC_QUIRK_HAS_GBIT))
-               fep->pause_flag |= FEC_PAUSE_FLAG_AUTONEG;
-
-       fep->hwp = devm_request_and_ioremap(&pdev->dev, r);
-       fep->pdev = pdev;
-       fep->dev_id = dev_id++;
-
-       fep->bufdesc_ex = 0;
-
-       if (!fep->hwp) {
-               ret = -ENOMEM;
-               goto failed_ioremap;
-       }
-
-       platform_set_drvdata(pdev, ndev);
-
-       ret = fec_get_phy_mode_dt(pdev);
-       if (ret < 0) {
-               pdata = pdev->dev.platform_data;
-               if (pdata)
-                       fep->phy_interface = pdata->phy;
-               else
-                       fep->phy_interface = PHY_INTERFACE_MODE_MII;
-       } else {
-               fep->phy_interface = ret;
-       }
-
-       pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
-       if (IS_ERR(pinctrl)) {
-               ret = PTR_ERR(pinctrl);
-               goto failed_pin;
-       }
-
-       fep->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
-       if (IS_ERR(fep->clk_ipg)) {
-               ret = PTR_ERR(fep->clk_ipg);
-               goto failed_clk;
-       }
-
-       fep->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
-       if (IS_ERR(fep->clk_ahb)) {
-               ret = PTR_ERR(fep->clk_ahb);
-               goto failed_clk;
-       }
-
-       fep->clk_ptp = devm_clk_get(&pdev->dev, "ptp");
-       fep->bufdesc_ex =
-               pdev->id_entry->driver_data & FEC_QUIRK_HAS_BUFDESC_EX;
-       if (IS_ERR(fep->clk_ptp)) {
-               ret = PTR_ERR(fep->clk_ptp);
-               fep->bufdesc_ex = 0;
-       }
-
-       clk_prepare_enable(fep->clk_ahb);
-       clk_prepare_enable(fep->clk_ipg);
-       if (!IS_ERR(fep->clk_ptp))
-               clk_prepare_enable(fep->clk_ptp);
-
-       reg_phy = devm_regulator_get(&pdev->dev, "phy");
-       if (!IS_ERR(reg_phy)) {
-               ret = regulator_enable(reg_phy);
-               if (ret) {
-                       dev_err(&pdev->dev,
-                               "Failed to enable phy regulator: %d\n", ret);
-                       goto failed_regulator;
-               }
-       }
-
-       fec_reset_phy(pdev);
-
-       if (fep->bufdesc_ex)
-               fec_ptp_init(ndev, pdev);
-
-       ret = fec_enet_init(ndev);
-       if (ret)
-               goto failed_init;
-
-       for (i = 0; i < FEC_IRQ_NUM; i++) {
-               irq = platform_get_irq(pdev, i);
-               if (irq < 0) {
-                       if (i)
-                               break;
-                       ret = irq;
-                       goto failed_irq;
-               }
-               ret = request_irq(irq, fec_enet_interrupt, IRQF_DISABLED, pdev->name, ndev);
-               if (ret) {
-                       while (--i >= 0) {
-                               irq = platform_get_irq(pdev, i);
-                               free_irq(irq, ndev);
-                       }
-                       goto failed_irq;
-               }
-       }
-
-       ret = fec_enet_mii_init(pdev);
-       if (ret)
-               goto failed_mii_init;
-
-       /* Carrier starts down, phylib will bring it up */
-       netif_carrier_off(ndev);
-
-       ret = register_netdev(ndev);
-       if (ret)
-               goto failed_register;
-
-       return 0;
-
-failed_register:
-       fec_enet_mii_remove(fep);
-failed_mii_init:
-failed_init:
-       for (i = 0; i < FEC_IRQ_NUM; i++) {
-               irq = platform_get_irq(pdev, i);
-               if (irq > 0)
-                       free_irq(irq, ndev);
-       }
-failed_irq:
-failed_regulator:
-       clk_disable_unprepare(fep->clk_ahb);
-       clk_disable_unprepare(fep->clk_ipg);
-       if (!IS_ERR(fep->clk_ptp))
-               clk_disable_unprepare(fep->clk_ptp);
-failed_pin:
-failed_clk:
-failed_ioremap:
-       free_netdev(ndev);
-
-       return ret;
-}
-
-static int
-fec_drv_remove(struct platform_device *pdev)
-{
-       struct net_device *ndev = platform_get_drvdata(pdev);
-       struct fec_enet_private *fep = netdev_priv(ndev);
-       int i;
-
-       unregister_netdev(ndev);
-       fec_enet_mii_remove(fep);
-       del_timer_sync(&fep->time_keep);
-       clk_disable_unprepare(fep->clk_ptp);
-       if (fep->ptp_clock)
-               ptp_clock_unregister(fep->ptp_clock);
-       clk_disable_unprepare(fep->clk_ahb);
-       clk_disable_unprepare(fep->clk_ipg);
-       for (i = 0; i < FEC_IRQ_NUM; i++) {
-               int irq = platform_get_irq(pdev, i);
-               if (irq > 0)
-                       free_irq(irq, ndev);
-       }
-       free_netdev(ndev);
-
-       platform_set_drvdata(pdev, NULL);
-
-       return 0;
-}
-
-#ifdef CONFIG_PM
-static int
-fec_suspend(struct device *dev)
-{
-       struct net_device *ndev = dev_get_drvdata(dev);
-       struct fec_enet_private *fep = netdev_priv(ndev);
-
-       if (netif_running(ndev)) {
-               fec_stop(ndev);
-               netif_device_detach(ndev);
-       }
-       clk_disable_unprepare(fep->clk_ahb);
-       clk_disable_unprepare(fep->clk_ipg);
-
-       return 0;
-}
-
-static int
-fec_resume(struct device *dev)
-{
-       struct net_device *ndev = dev_get_drvdata(dev);
-       struct fec_enet_private *fep = netdev_priv(ndev);
-
-       clk_prepare_enable(fep->clk_ahb);
-       clk_prepare_enable(fep->clk_ipg);
-       if (netif_running(ndev)) {
-               fec_restart(ndev, fep->full_duplex);
-               netif_device_attach(ndev);
-       }
-
-       return 0;
-}
-
-static const struct dev_pm_ops fec_pm_ops = {
-       .suspend        = fec_suspend,
-       .resume         = fec_resume,
-       .freeze         = fec_suspend,
-       .thaw           = fec_resume,
-       .poweroff       = fec_suspend,
-       .restore        = fec_resume,
-};
-#endif
-
-static struct platform_driver fec_driver = {
-       .driver = {
-               .name   = DRIVER_NAME,
-               .owner  = THIS_MODULE,
-#ifdef CONFIG_PM
-               .pm     = &fec_pm_ops,
-#endif
-               .of_match_table = fec_dt_ids,
-       },
-       .id_table = fec_devtype,
-       .probe  = fec_probe,
-       .remove = fec_drv_remove,
-};
-
-module_platform_driver(fec_driver);
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
new file mode 100644 (file)
index 0000000..3eb608f
--- /dev/null
@@ -0,0 +1,1966 @@
+/*
+ * Fast Ethernet Controller (FEC) driver for Motorola MPC8xx.
+ * Copyright (c) 1997 Dan Malek (dmalek@jlc.net)
+ *
+ * Right now, I am very wasteful with the buffers.  I allocate memory
+ * pages and then divide them into 2K frame buffers.  This way I know I
+ * have buffers large enough to hold one frame within one buffer descriptor.
+ * Once I get this working, I will use 64 or 128 byte CPM buffers, which
+ * will be much more memory efficient and will easily handle lots of
+ * small packets.
+ *
+ * Much better multiple PHY support by Magnus Damm.
+ * Copyright (c) 2000 Ericsson Radio Systems AB.
+ *
+ * Support for FEC controller of ColdFire processors.
+ * Copyright (c) 2001-2005 Greg Ungerer (gerg@snapgear.com)
+ *
+ * Bug fixes and cleanup by Philippe De Muyter (phdm@macqel.be)
+ * Copyright (c) 2004-2006 Macq Electronique SA.
+ *
+ * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/ptrace.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <linux/phy.h>
+#include <linux/fec.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/of_net.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <asm/cacheflush.h>
+
+#ifndef CONFIG_ARM
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#endif
+
+#include "fec.h"
+
+#if defined(CONFIG_ARM)
+#define FEC_ALIGNMENT  0xf
+#else
+#define FEC_ALIGNMENT  0x3
+#endif
+
+#define DRIVER_NAME    "fec"
+#define FEC_NAPI_WEIGHT        64
+
+/* Pause frame feild and FIFO threshold */
+#define FEC_ENET_FCE   (1 << 5)
+#define FEC_ENET_RSEM_V        0x84
+#define FEC_ENET_RSFL_V        16
+#define FEC_ENET_RAEM_V        0x8
+#define FEC_ENET_RAFL_V        0x8
+#define FEC_ENET_OPD_V 0xFFF0
+
+/* Controller is ENET-MAC */
+#define FEC_QUIRK_ENET_MAC             (1 << 0)
+/* Controller needs driver to swap frame */
+#define FEC_QUIRK_SWAP_FRAME           (1 << 1)
+/* Controller uses gasket */
+#define FEC_QUIRK_USE_GASKET           (1 << 2)
+/* Controller has GBIT support */
+#define FEC_QUIRK_HAS_GBIT             (1 << 3)
+/* Controller has extend desc buffer */
+#define FEC_QUIRK_HAS_BUFDESC_EX       (1 << 4)
+
+static struct platform_device_id fec_devtype[] = {
+       {
+               /* keep it for coldfire */
+               .name = DRIVER_NAME,
+               .driver_data = 0,
+       }, {
+               .name = "imx25-fec",
+               .driver_data = FEC_QUIRK_USE_GASKET,
+       }, {
+               .name = "imx27-fec",
+               .driver_data = 0,
+       }, {
+               .name = "imx28-fec",
+               .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_SWAP_FRAME,
+       }, {
+               .name = "imx6q-fec",
+               .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_GBIT |
+                               FEC_QUIRK_HAS_BUFDESC_EX,
+       }, {
+               /* sentinel */
+       }
+};
+MODULE_DEVICE_TABLE(platform, fec_devtype);
+
+enum imx_fec_type {
+       IMX25_FEC = 1,  /* runs on i.mx25/50/53 */
+       IMX27_FEC,      /* runs on i.mx27/35/51 */
+       IMX28_FEC,
+       IMX6Q_FEC,
+};
+
+static const struct of_device_id fec_dt_ids[] = {
+       { .compatible = "fsl,imx25-fec", .data = &fec_devtype[IMX25_FEC], },
+       { .compatible = "fsl,imx27-fec", .data = &fec_devtype[IMX27_FEC], },
+       { .compatible = "fsl,imx28-fec", .data = &fec_devtype[IMX28_FEC], },
+       { .compatible = "fsl,imx6q-fec", .data = &fec_devtype[IMX6Q_FEC], },
+       { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, fec_dt_ids);
+
+static unsigned char macaddr[ETH_ALEN];
+module_param_array(macaddr, byte, NULL, 0);
+MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
+
+#if defined(CONFIG_M5272)
+/*
+ * Some hardware gets it MAC address out of local flash memory.
+ * if this is non-zero then assume it is the address to get MAC from.
+ */
+#if defined(CONFIG_NETtel)
+#define        FEC_FLASHMAC    0xf0006006
+#elif defined(CONFIG_GILBARCONAP) || defined(CONFIG_SCALES)
+#define        FEC_FLASHMAC    0xf0006000
+#elif defined(CONFIG_CANCam)
+#define        FEC_FLASHMAC    0xf0020000
+#elif defined (CONFIG_M5272C3)
+#define        FEC_FLASHMAC    (0xffe04000 + 4)
+#elif defined(CONFIG_MOD5272)
+#define FEC_FLASHMAC   0xffc0406b
+#else
+#define        FEC_FLASHMAC    0
+#endif
+#endif /* CONFIG_M5272 */
+
+#if (((RX_RING_SIZE + TX_RING_SIZE) * 32) > PAGE_SIZE)
+#error "FEC: descriptor ring size constants too large"
+#endif
+
+/* Interrupt events/masks. */
+#define FEC_ENET_HBERR ((uint)0x80000000)      /* Heartbeat error */
+#define FEC_ENET_BABR  ((uint)0x40000000)      /* Babbling receiver */
+#define FEC_ENET_BABT  ((uint)0x20000000)      /* Babbling transmitter */
+#define FEC_ENET_GRA   ((uint)0x10000000)      /* Graceful stop complete */
+#define FEC_ENET_TXF   ((uint)0x08000000)      /* Full frame transmitted */
+#define FEC_ENET_TXB   ((uint)0x04000000)      /* A buffer was transmitted */
+#define FEC_ENET_RXF   ((uint)0x02000000)      /* Full frame received */
+#define FEC_ENET_RXB   ((uint)0x01000000)      /* A buffer was received */
+#define FEC_ENET_MII   ((uint)0x00800000)      /* MII interrupt */
+#define FEC_ENET_EBERR ((uint)0x00400000)      /* SDMA bus error */
+
+#define FEC_DEFAULT_IMASK (FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII)
+#define FEC_RX_DISABLED_IMASK (FEC_DEFAULT_IMASK & (~FEC_ENET_RXF))
+
+/* The FEC stores dest/src/type, data, and checksum for receive packets.
+ */
+#define PKT_MAXBUF_SIZE                1518
+#define PKT_MINBUF_SIZE                64
+#define PKT_MAXBLR_SIZE                1520
+
+/*
+ * The 5270/5271/5280/5282/532x RX control register also contains maximum frame
+ * size bits. Other FEC hardware does not, so we need to take that into
+ * account when setting it.
+ */
+#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
+    defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM)
+#define        OPT_FRAME_SIZE  (PKT_MAXBUF_SIZE << 16)
+#else
+#define        OPT_FRAME_SIZE  0
+#endif
+
+/* FEC MII MMFR bits definition */
+#define FEC_MMFR_ST            (1 << 30)
+#define FEC_MMFR_OP_READ       (2 << 28)
+#define FEC_MMFR_OP_WRITE      (1 << 28)
+#define FEC_MMFR_PA(v)         ((v & 0x1f) << 23)
+#define FEC_MMFR_RA(v)         ((v & 0x1f) << 18)
+#define FEC_MMFR_TA            (2 << 16)
+#define FEC_MMFR_DATA(v)       (v & 0xffff)
+
+#define FEC_MII_TIMEOUT                30000 /* us */
+
+/* Transmitter timeout */
+#define TX_TIMEOUT (2 * HZ)
+
+#define FEC_PAUSE_FLAG_AUTONEG 0x1
+#define FEC_PAUSE_FLAG_ENABLE  0x2
+
+static int mii_cnt;
+
+static struct bufdesc *fec_enet_get_nextdesc(struct bufdesc *bdp, int is_ex)
+{
+       struct bufdesc_ex *ex = (struct bufdesc_ex *)bdp;
+       if (is_ex)
+               return (struct bufdesc *)(ex + 1);
+       else
+               return bdp + 1;
+}
+
+static struct bufdesc *fec_enet_get_prevdesc(struct bufdesc *bdp, int is_ex)
+{
+       struct bufdesc_ex *ex = (struct bufdesc_ex *)bdp;
+       if (is_ex)
+               return (struct bufdesc *)(ex - 1);
+       else
+               return bdp - 1;
+}
+
+static void *swap_buffer(void *bufaddr, int len)
+{
+       int i;
+       unsigned int *buf = bufaddr;
+
+       for (i = 0; i < (len + 3) / 4; i++, buf++)
+               *buf = cpu_to_be32(*buf);
+
+       return bufaddr;
+}
+
+static netdev_tx_t
+fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       const struct platform_device_id *id_entry =
+                               platform_get_device_id(fep->pdev);
+       struct bufdesc *bdp;
+       void *bufaddr;
+       unsigned short  status;
+       unsigned int index;
+
+       if (!fep->link) {
+               /* Link is down or autonegotiation is in progress. */
+               return NETDEV_TX_BUSY;
+       }
+
+       /* Fill in a Tx ring entry */
+       bdp = fep->cur_tx;
+
+       status = bdp->cbd_sc;
+
+       if (status & BD_ENET_TX_READY) {
+               /* Ooops.  All transmit buffers are full.  Bail out.
+                * This should not happen, since ndev->tbusy should be set.
+                */
+               printk("%s: tx queue full!.\n", ndev->name);
+               return NETDEV_TX_BUSY;
+       }
+
+       /* Clear all of the status flags */
+       status &= ~BD_ENET_TX_STATS;
+
+       /* Set buffer length and buffer pointer */
+       bufaddr = skb->data;
+       bdp->cbd_datlen = skb->len;
+
+       /*
+        * On some FEC implementations data must be aligned on
+        * 4-byte boundaries. Use bounce buffers to copy data
+        * and get it aligned. Ugh.
+        */
+       if (fep->bufdesc_ex)
+               index = (struct bufdesc_ex *)bdp -
+                       (struct bufdesc_ex *)fep->tx_bd_base;
+       else
+               index = bdp - fep->tx_bd_base;
+
+       if (((unsigned long) bufaddr) & FEC_ALIGNMENT) {
+               memcpy(fep->tx_bounce[index], skb->data, skb->len);
+               bufaddr = fep->tx_bounce[index];
+       }
+
+       /*
+        * Some design made an incorrect assumption on endian mode of
+        * the system that it's running on. As the result, driver has to
+        * swap every frame going to and coming from the controller.
+        */
+       if (id_entry->driver_data & FEC_QUIRK_SWAP_FRAME)
+               swap_buffer(bufaddr, skb->len);
+
+       /* Save skb pointer */
+       fep->tx_skbuff[index] = skb;
+
+       /* Push the data cache so the CPM does not get stale memory
+        * data.
+        */
+       bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, bufaddr,
+                       FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE);
+
+       /* Send it on its way.  Tell FEC it's ready, interrupt when done,
+        * it's the last BD of the frame, and to put the CRC on the end.
+        */
+       status |= (BD_ENET_TX_READY | BD_ENET_TX_INTR
+                       | BD_ENET_TX_LAST | BD_ENET_TX_TC);
+       bdp->cbd_sc = status;
+
+       if (fep->bufdesc_ex) {
+
+               struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
+               ebdp->cbd_bdu = 0;
+               if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
+                       fep->hwts_tx_en)) {
+                       ebdp->cbd_esc = (BD_ENET_TX_TS | BD_ENET_TX_INT);
+                       skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+               } else {
+
+                       ebdp->cbd_esc = BD_ENET_TX_INT;
+               }
+       }
+       /* If this was the last BD in the ring, start at the beginning again. */
+       if (status & BD_ENET_TX_WRAP)
+               bdp = fep->tx_bd_base;
+       else
+               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
+
+       fep->cur_tx = bdp;
+
+       if (fep->cur_tx == fep->dirty_tx)
+               netif_stop_queue(ndev);
+
+       /* Trigger transmission start */
+       writel(0, fep->hwp + FEC_X_DES_ACTIVE);
+
+       skb_tx_timestamp(skb);
+
+       return NETDEV_TX_OK;
+}
+
+/* This function is called to start or restart the FEC during a link
+ * change.  This only happens when switching between half and full
+ * duplex.
+ */
+static void
+fec_restart(struct net_device *ndev, int duplex)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       const struct platform_device_id *id_entry =
+                               platform_get_device_id(fep->pdev);
+       int i;
+       u32 temp_mac[2];
+       u32 rcntl = OPT_FRAME_SIZE | 0x04;
+       u32 ecntl = 0x2; /* ETHEREN */
+
+       /* Whack a reset.  We should wait for this. */
+       writel(1, fep->hwp + FEC_ECNTRL);
+       udelay(10);
+
+       /*
+        * enet-mac reset will reset mac address registers too,
+        * so need to reconfigure it.
+        */
+       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
+               memcpy(&temp_mac, ndev->dev_addr, ETH_ALEN);
+               writel(cpu_to_be32(temp_mac[0]), fep->hwp + FEC_ADDR_LOW);
+               writel(cpu_to_be32(temp_mac[1]), fep->hwp + FEC_ADDR_HIGH);
+       }
+
+       /* Clear any outstanding interrupt. */
+       writel(0xffc00000, fep->hwp + FEC_IEVENT);
+
+       /* Reset all multicast. */
+       writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+       writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+#ifndef CONFIG_M5272
+       writel(0, fep->hwp + FEC_HASH_TABLE_HIGH);
+       writel(0, fep->hwp + FEC_HASH_TABLE_LOW);
+#endif
+
+       /* Set maximum receive buffer size. */
+       writel(PKT_MAXBLR_SIZE, fep->hwp + FEC_R_BUFF_SIZE);
+
+       /* Set receive and transmit descriptor base. */
+       writel(fep->bd_dma, fep->hwp + FEC_R_DES_START);
+       if (fep->bufdesc_ex)
+               writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc_ex)
+                       * RX_RING_SIZE, fep->hwp + FEC_X_DES_START);
+       else
+               writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc)
+                       * RX_RING_SIZE, fep->hwp + FEC_X_DES_START);
+
+       fep->cur_rx = fep->rx_bd_base;
+
+       for (i = 0; i <= TX_RING_MOD_MASK; i++) {
+               if (fep->tx_skbuff[i]) {
+                       dev_kfree_skb_any(fep->tx_skbuff[i]);
+                       fep->tx_skbuff[i] = NULL;
+               }
+       }
+
+       /* Enable MII mode */
+       if (duplex) {
+               /* FD enable */
+               writel(0x04, fep->hwp + FEC_X_CNTRL);
+       } else {
+               /* No Rcv on Xmit */
+               rcntl |= 0x02;
+               writel(0x0, fep->hwp + FEC_X_CNTRL);
+       }
+
+       fep->full_duplex = duplex;
+
+       /* Set MII speed */
+       writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
+
+       /*
+        * The phy interface and speed need to get configured
+        * differently on enet-mac.
+        */
+       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
+               /* Enable flow control and length check */
+               rcntl |= 0x40000000 | 0x00000020;
+
+               /* RGMII, RMII or MII */
+               if (fep->phy_interface == PHY_INTERFACE_MODE_RGMII)
+                       rcntl |= (1 << 6);
+               else if (fep->phy_interface == PHY_INTERFACE_MODE_RMII)
+                       rcntl |= (1 << 8);
+               else
+                       rcntl &= ~(1 << 8);
+
+               /* 1G, 100M or 10M */
+               if (fep->phy_dev) {
+                       if (fep->phy_dev->speed == SPEED_1000)
+                               ecntl |= (1 << 5);
+                       else if (fep->phy_dev->speed == SPEED_100)
+                               rcntl &= ~(1 << 9);
+                       else
+                               rcntl |= (1 << 9);
+               }
+       } else {
+#ifdef FEC_MIIGSK_ENR
+               if (id_entry->driver_data & FEC_QUIRK_USE_GASKET) {
+                       u32 cfgr;
+                       /* disable the gasket and wait */
+                       writel(0, fep->hwp + FEC_MIIGSK_ENR);
+                       while (readl(fep->hwp + FEC_MIIGSK_ENR) & 4)
+                               udelay(1);
+
+                       /*
+                        * configure the gasket:
+                        *   RMII, 50 MHz, no loopback, no echo
+                        *   MII, 25 MHz, no loopback, no echo
+                        */
+                       cfgr = (fep->phy_interface == PHY_INTERFACE_MODE_RMII)
+                               ? BM_MIIGSK_CFGR_RMII : BM_MIIGSK_CFGR_MII;
+                       if (fep->phy_dev && fep->phy_dev->speed == SPEED_10)
+                               cfgr |= BM_MIIGSK_CFGR_FRCONT_10M;
+                       writel(cfgr, fep->hwp + FEC_MIIGSK_CFGR);
+
+                       /* re-enable the gasket */
+                       writel(2, fep->hwp + FEC_MIIGSK_ENR);
+               }
+#endif
+       }
+
+       /* enable pause frame*/
+       if ((fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) ||
+           ((fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) &&
+            fep->phy_dev && fep->phy_dev->pause)) {
+               rcntl |= FEC_ENET_FCE;
+
+               /* set FIFO thresh hold parameter to reduce overrun */
+               writel(FEC_ENET_RSEM_V, fep->hwp + FEC_R_FIFO_RSEM);
+               writel(FEC_ENET_RSFL_V, fep->hwp + FEC_R_FIFO_RSFL);
+               writel(FEC_ENET_RAEM_V, fep->hwp + FEC_R_FIFO_RAEM);
+               writel(FEC_ENET_RAFL_V, fep->hwp + FEC_R_FIFO_RAFL);
+
+               /* OPD */
+               writel(FEC_ENET_OPD_V, fep->hwp + FEC_OPD);
+       } else {
+               rcntl &= ~FEC_ENET_FCE;
+       }
+
+       writel(rcntl, fep->hwp + FEC_R_CNTRL);
+
+       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
+               /* enable ENET endian swap */
+               ecntl |= (1 << 8);
+               /* enable ENET store and forward mode */
+               writel(1 << 8, fep->hwp + FEC_X_WMRK);
+       }
+
+       if (fep->bufdesc_ex)
+               ecntl |= (1 << 4);
+
+       /* And last, enable the transmit and receive processing */
+       writel(ecntl, fep->hwp + FEC_ECNTRL);
+       writel(0, fep->hwp + FEC_R_DES_ACTIVE);
+
+       if (fep->bufdesc_ex)
+               fec_ptp_start_cyclecounter(ndev);
+
+       /* Enable interrupts we wish to service */
+       writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
+}
+
+static void
+fec_stop(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       const struct platform_device_id *id_entry =
+                               platform_get_device_id(fep->pdev);
+       u32 rmii_mode = readl(fep->hwp + FEC_R_CNTRL) & (1 << 8);
+
+       /* We cannot expect a graceful transmit stop without link !!! */
+       if (fep->link) {
+               writel(1, fep->hwp + FEC_X_CNTRL); /* Graceful transmit stop */
+               udelay(10);
+               if (!(readl(fep->hwp + FEC_IEVENT) & FEC_ENET_GRA))
+                       printk("fec_stop : Graceful transmit stop did not complete !\n");
+       }
+
+       /* Whack a reset.  We should wait for this. */
+       writel(1, fep->hwp + FEC_ECNTRL);
+       udelay(10);
+       writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
+       writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
+
+       /* We have to keep ENET enabled to have MII interrupt stay working */
+       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
+               writel(2, fep->hwp + FEC_ECNTRL);
+               writel(rmii_mode, fep->hwp + FEC_R_CNTRL);
+       }
+}
+
+
+static void
+fec_timeout(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+
+       ndev->stats.tx_errors++;
+
+       fec_restart(ndev, fep->full_duplex);
+       netif_wake_queue(ndev);
+}
+
+static void
+fec_enet_tx(struct net_device *ndev)
+{
+       struct  fec_enet_private *fep;
+       struct bufdesc *bdp;
+       unsigned short status;
+       struct  sk_buff *skb;
+       int     index = 0;
+
+       fep = netdev_priv(ndev);
+       bdp = fep->dirty_tx;
+
+       /* get next bdp of dirty_tx */
+       if (bdp->cbd_sc & BD_ENET_TX_WRAP)
+               bdp = fep->tx_bd_base;
+       else
+               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
+
+       while (((status = bdp->cbd_sc) & BD_ENET_TX_READY) == 0) {
+
+               /* current queue is empty */
+               if (bdp == fep->cur_tx)
+                       break;
+
+               if (fep->bufdesc_ex)
+                       index = (struct bufdesc_ex *)bdp -
+                               (struct bufdesc_ex *)fep->tx_bd_base;
+               else
+                       index = bdp - fep->tx_bd_base;
+
+               dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr,
+                               FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE);
+               bdp->cbd_bufaddr = 0;
+
+               skb = fep->tx_skbuff[index];
+
+               /* Check for errors. */
+               if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC |
+                                  BD_ENET_TX_RL | BD_ENET_TX_UN |
+                                  BD_ENET_TX_CSL)) {
+                       ndev->stats.tx_errors++;
+                       if (status & BD_ENET_TX_HB)  /* No heartbeat */
+                               ndev->stats.tx_heartbeat_errors++;
+                       if (status & BD_ENET_TX_LC)  /* Late collision */
+                               ndev->stats.tx_window_errors++;
+                       if (status & BD_ENET_TX_RL)  /* Retrans limit */
+                               ndev->stats.tx_aborted_errors++;
+                       if (status & BD_ENET_TX_UN)  /* Underrun */
+                               ndev->stats.tx_fifo_errors++;
+                       if (status & BD_ENET_TX_CSL) /* Carrier lost */
+                               ndev->stats.tx_carrier_errors++;
+               } else {
+                       ndev->stats.tx_packets++;
+               }
+
+               if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS) &&
+                       fep->bufdesc_ex) {
+                       struct skb_shared_hwtstamps shhwtstamps;
+                       unsigned long flags;
+                       struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
+
+                       memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+                       spin_lock_irqsave(&fep->tmreg_lock, flags);
+                       shhwtstamps.hwtstamp = ns_to_ktime(
+                               timecounter_cyc2time(&fep->tc, ebdp->ts));
+                       spin_unlock_irqrestore(&fep->tmreg_lock, flags);
+                       skb_tstamp_tx(skb, &shhwtstamps);
+               }
+
+               if (status & BD_ENET_TX_READY)
+                       printk("HEY! Enet xmit interrupt and TX_READY.\n");
+
+               /* Deferred means some collisions occurred during transmit,
+                * but we eventually sent the packet OK.
+                */
+               if (status & BD_ENET_TX_DEF)
+                       ndev->stats.collisions++;
+
+               /* Free the sk buffer associated with this last transmit */
+               dev_kfree_skb_any(skb);
+               fep->tx_skbuff[index] = NULL;
+
+               fep->dirty_tx = bdp;
+
+               /* Update pointer to next buffer descriptor to be transmitted */
+               if (status & BD_ENET_TX_WRAP)
+                       bdp = fep->tx_bd_base;
+               else
+                       bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
+
+               /* Since we have freed up a buffer, the ring is no longer full
+                */
+               if (fep->dirty_tx != fep->cur_tx) {
+                       if (netif_queue_stopped(ndev))
+                               netif_wake_queue(ndev);
+               }
+       }
+       return;
+}
+
+
+/* During a receive, the cur_rx points to the current incoming buffer.
+ * When we update through the ring, if the next incoming buffer has
+ * not been given to the system, we just set the empty indicator,
+ * effectively tossing the packet.
+ */
+static int
+fec_enet_rx(struct net_device *ndev, int budget)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       const struct platform_device_id *id_entry =
+                               platform_get_device_id(fep->pdev);
+       struct bufdesc *bdp;
+       unsigned short status;
+       struct  sk_buff *skb;
+       ushort  pkt_len;
+       __u8 *data;
+       int     pkt_received = 0;
+
+#ifdef CONFIG_M532x
+       flush_cache_all();
+#endif
+
+       /* First, grab all of the stats for the incoming packet.
+        * These get messed up if we get called due to a busy condition.
+        */
+       bdp = fep->cur_rx;
+
+       while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) {
+
+               if (pkt_received >= budget)
+                       break;
+               pkt_received++;
+
+               /* Since we have allocated space to hold a complete frame,
+                * the last indicator should be set.
+                */
+               if ((status & BD_ENET_RX_LAST) == 0)
+                       printk("FEC ENET: rcv is not +last\n");
+
+               if (!fep->opened)
+                       goto rx_processing_done;
+
+               /* Check for errors. */
+               if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO |
+                          BD_ENET_RX_CR | BD_ENET_RX_OV)) {
+                       ndev->stats.rx_errors++;
+                       if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH)) {
+                               /* Frame too long or too short. */
+                               ndev->stats.rx_length_errors++;
+                       }
+                       if (status & BD_ENET_RX_NO)     /* Frame alignment */
+                               ndev->stats.rx_frame_errors++;
+                       if (status & BD_ENET_RX_CR)     /* CRC Error */
+                               ndev->stats.rx_crc_errors++;
+                       if (status & BD_ENET_RX_OV)     /* FIFO overrun */
+                               ndev->stats.rx_fifo_errors++;
+               }
+
+               /* Report late collisions as a frame error.
+                * On this error, the BD is closed, but we don't know what we
+                * have in the buffer.  So, just drop this frame on the floor.
+                */
+               if (status & BD_ENET_RX_CL) {
+                       ndev->stats.rx_errors++;
+                       ndev->stats.rx_frame_errors++;
+                       goto rx_processing_done;
+               }
+
+               /* Process the incoming frame. */
+               ndev->stats.rx_packets++;
+               pkt_len = bdp->cbd_datlen;
+               ndev->stats.rx_bytes += pkt_len;
+               data = (__u8*)__va(bdp->cbd_bufaddr);
+
+               dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr,
+                               FEC_ENET_TX_FRSIZE, DMA_FROM_DEVICE);
+
+               if (id_entry->driver_data & FEC_QUIRK_SWAP_FRAME)
+                       swap_buffer(data, pkt_len);
+
+               /* This does 16 byte alignment, exactly what we need.
+                * The packet length includes FCS, but we don't want to
+                * include that when passing upstream as it messes up
+                * bridging applications.
+                */
+               skb = netdev_alloc_skb(ndev, pkt_len - 4 + NET_IP_ALIGN);
+
+               if (unlikely(!skb)) {
+                       ndev->stats.rx_dropped++;
+               } else {
+                       skb_reserve(skb, NET_IP_ALIGN);
+                       skb_put(skb, pkt_len - 4);      /* Make room */
+                       skb_copy_to_linear_data(skb, data, pkt_len - 4);
+                       skb->protocol = eth_type_trans(skb, ndev);
+
+                       /* Get receive timestamp from the skb */
+                       if (fep->hwts_rx_en && fep->bufdesc_ex) {
+                               struct skb_shared_hwtstamps *shhwtstamps =
+                                                           skb_hwtstamps(skb);
+                               unsigned long flags;
+                               struct bufdesc_ex *ebdp =
+                                       (struct bufdesc_ex *)bdp;
+
+                               memset(shhwtstamps, 0, sizeof(*shhwtstamps));
+
+                               spin_lock_irqsave(&fep->tmreg_lock, flags);
+                               shhwtstamps->hwtstamp = ns_to_ktime(
+                                   timecounter_cyc2time(&fep->tc, ebdp->ts));
+                               spin_unlock_irqrestore(&fep->tmreg_lock, flags);
+                       }
+
+                       if (!skb_defer_rx_timestamp(skb))
+                               napi_gro_receive(&fep->napi, skb);
+               }
+
+               bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, data,
+                               FEC_ENET_TX_FRSIZE, DMA_FROM_DEVICE);
+rx_processing_done:
+               /* Clear the status flags for this buffer */
+               status &= ~BD_ENET_RX_STATS;
+
+               /* Mark the buffer empty */
+               status |= BD_ENET_RX_EMPTY;
+               bdp->cbd_sc = status;
+
+               if (fep->bufdesc_ex) {
+                       struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
+
+                       ebdp->cbd_esc = BD_ENET_RX_INT;
+                       ebdp->cbd_prot = 0;
+                       ebdp->cbd_bdu = 0;
+               }
+
+               /* Update BD pointer to next entry */
+               if (status & BD_ENET_RX_WRAP)
+                       bdp = fep->rx_bd_base;
+               else
+                       bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
+               /* Doing this here will keep the FEC running while we process
+                * incoming frames.  On a heavily loaded network, we should be
+                * able to keep up at the expense of system resources.
+                */
+               writel(0, fep->hwp + FEC_R_DES_ACTIVE);
+       }
+       fep->cur_rx = bdp;
+
+       return pkt_received;
+}
+
+static irqreturn_t
+fec_enet_interrupt(int irq, void *dev_id)
+{
+       struct net_device *ndev = dev_id;
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       uint int_events;
+       irqreturn_t ret = IRQ_NONE;
+
+       do {
+               int_events = readl(fep->hwp + FEC_IEVENT);
+               writel(int_events, fep->hwp + FEC_IEVENT);
+
+               if (int_events & (FEC_ENET_RXF | FEC_ENET_TXF)) {
+                       ret = IRQ_HANDLED;
+
+                       /* Disable the RX interrupt */
+                       if (napi_schedule_prep(&fep->napi)) {
+                               writel(FEC_RX_DISABLED_IMASK,
+                                       fep->hwp + FEC_IMASK);
+                               __napi_schedule(&fep->napi);
+                       }
+               }
+
+               if (int_events & FEC_ENET_MII) {
+                       ret = IRQ_HANDLED;
+                       complete(&fep->mdio_done);
+               }
+       } while (int_events);
+
+       return ret;
+}
+
+static int fec_enet_rx_napi(struct napi_struct *napi, int budget)
+{
+       struct net_device *ndev = napi->dev;
+       int pkts = fec_enet_rx(ndev, budget);
+       struct fec_enet_private *fep = netdev_priv(ndev);
+
+       fec_enet_tx(ndev);
+
+       if (pkts < budget) {
+               napi_complete(napi);
+               writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
+       }
+       return pkts;
+}
+
+/* ------------------------------------------------------------------------- */
+static void fec_get_mac(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       struct fec_platform_data *pdata = fep->pdev->dev.platform_data;
+       unsigned char *iap, tmpaddr[ETH_ALEN];
+
+       /*
+        * try to get mac address in following order:
+        *
+        * 1) module parameter via kernel command line in form
+        *    fec.macaddr=0x00,0x04,0x9f,0x01,0x30,0xe0
+        */
+       iap = macaddr;
+
+#ifdef CONFIG_OF
+       /*
+        * 2) from device tree data
+        */
+       if (!is_valid_ether_addr(iap)) {
+               struct device_node *np = fep->pdev->dev.of_node;
+               if (np) {
+                       const char *mac = of_get_mac_address(np);
+                       if (mac)
+                               iap = (unsigned char *) mac;
+               }
+       }
+#endif
+
+       /*
+        * 3) from flash or fuse (via platform data)
+        */
+       if (!is_valid_ether_addr(iap)) {
+#ifdef CONFIG_M5272
+               if (FEC_FLASHMAC)
+                       iap = (unsigned char *)FEC_FLASHMAC;
+#else
+               if (pdata)
+                       iap = (unsigned char *)&pdata->mac;
+#endif
+       }
+
+       /*
+        * 4) FEC mac registers set by bootloader
+        */
+       if (!is_valid_ether_addr(iap)) {
+               *((unsigned long *) &tmpaddr[0]) =
+                       be32_to_cpu(readl(fep->hwp + FEC_ADDR_LOW));
+               *((unsigned short *) &tmpaddr[4]) =
+                       be16_to_cpu(readl(fep->hwp + FEC_ADDR_HIGH) >> 16);
+               iap = &tmpaddr[0];
+       }
+
+       memcpy(ndev->dev_addr, iap, ETH_ALEN);
+
+       /* Adjust MAC if using macaddr */
+       if (iap == macaddr)
+                ndev->dev_addr[ETH_ALEN-1] = macaddr[ETH_ALEN-1] + fep->dev_id;
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Phy section
+ */
+static void fec_enet_adjust_link(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       struct phy_device *phy_dev = fep->phy_dev;
+       unsigned long flags;
+
+       int status_change = 0;
+
+       spin_lock_irqsave(&fep->hw_lock, flags);
+
+       /* Prevent a state halted on mii error */
+       if (fep->mii_timeout && phy_dev->state == PHY_HALTED) {
+               phy_dev->state = PHY_RESUMING;
+               goto spin_unlock;
+       }
+
+       if (phy_dev->link) {
+               if (!fep->link) {
+                       fep->link = phy_dev->link;
+                       status_change = 1;
+               }
+
+               if (fep->full_duplex != phy_dev->duplex)
+                       status_change = 1;
+
+               if (phy_dev->speed != fep->speed) {
+                       fep->speed = phy_dev->speed;
+                       status_change = 1;
+               }
+
+               /* if any of the above changed restart the FEC */
+               if (status_change)
+                       fec_restart(ndev, phy_dev->duplex);
+       } else {
+               if (fep->link) {
+                       fec_stop(ndev);
+                       status_change = 1;
+               }
+       }
+
+spin_unlock:
+       spin_unlock_irqrestore(&fep->hw_lock, flags);
+
+       if (status_change)
+               phy_print_status(phy_dev);
+}
+
+static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
+{
+       struct fec_enet_private *fep = bus->priv;
+       unsigned long time_left;
+
+       fep->mii_timeout = 0;
+       init_completion(&fep->mdio_done);
+
+       /* start a read op */
+       writel(FEC_MMFR_ST | FEC_MMFR_OP_READ |
+               FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) |
+               FEC_MMFR_TA, fep->hwp + FEC_MII_DATA);
+
+       /* wait for end of transfer */
+       time_left = wait_for_completion_timeout(&fep->mdio_done,
+                       usecs_to_jiffies(FEC_MII_TIMEOUT));
+       if (time_left == 0) {
+               fep->mii_timeout = 1;
+               printk(KERN_ERR "FEC: MDIO read timeout\n");
+               return -ETIMEDOUT;
+       }
+
+       /* return value */
+       return FEC_MMFR_DATA(readl(fep->hwp + FEC_MII_DATA));
+}
+
+static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
+                          u16 value)
+{
+       struct fec_enet_private *fep = bus->priv;
+       unsigned long time_left;
+
+       fep->mii_timeout = 0;
+       init_completion(&fep->mdio_done);
+
+       /* start a write op */
+       writel(FEC_MMFR_ST | FEC_MMFR_OP_WRITE |
+               FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) |
+               FEC_MMFR_TA | FEC_MMFR_DATA(value),
+               fep->hwp + FEC_MII_DATA);
+
+       /* wait for end of transfer */
+       time_left = wait_for_completion_timeout(&fep->mdio_done,
+                       usecs_to_jiffies(FEC_MII_TIMEOUT));
+       if (time_left == 0) {
+               fep->mii_timeout = 1;
+               printk(KERN_ERR "FEC: MDIO write timeout\n");
+               return -ETIMEDOUT;
+       }
+
+       return 0;
+}
+
+static int fec_enet_mdio_reset(struct mii_bus *bus)
+{
+       return 0;
+}
+
+static int fec_enet_mii_probe(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       const struct platform_device_id *id_entry =
+                               platform_get_device_id(fep->pdev);
+       struct phy_device *phy_dev = NULL;
+       char mdio_bus_id[MII_BUS_ID_SIZE];
+       char phy_name[MII_BUS_ID_SIZE + 3];
+       int phy_id;
+       int dev_id = fep->dev_id;
+
+       fep->phy_dev = NULL;
+
+       /* check for attached phy */
+       for (phy_id = 0; (phy_id < PHY_MAX_ADDR); phy_id++) {
+               if ((fep->mii_bus->phy_mask & (1 << phy_id)))
+                       continue;
+               if (fep->mii_bus->phy_map[phy_id] == NULL)
+                       continue;
+               if (fep->mii_bus->phy_map[phy_id]->phy_id == 0)
+                       continue;
+               if (dev_id--)
+                       continue;
+               strncpy(mdio_bus_id, fep->mii_bus->id, MII_BUS_ID_SIZE);
+               break;
+       }
+
+       if (phy_id >= PHY_MAX_ADDR) {
+               printk(KERN_INFO
+                       "%s: no PHY, assuming direct connection to switch\n",
+                       ndev->name);
+               strncpy(mdio_bus_id, "fixed-0", MII_BUS_ID_SIZE);
+               phy_id = 0;
+       }
+
+       snprintf(phy_name, sizeof(phy_name), PHY_ID_FMT, mdio_bus_id, phy_id);
+       phy_dev = phy_connect(ndev, phy_name, &fec_enet_adjust_link,
+                             fep->phy_interface);
+       if (IS_ERR(phy_dev)) {
+               printk(KERN_ERR "%s: could not attach to PHY\n", ndev->name);
+               return PTR_ERR(phy_dev);
+       }
+
+       /* mask with MAC supported features */
+       if (id_entry->driver_data & FEC_QUIRK_HAS_GBIT) {
+               phy_dev->supported &= PHY_GBIT_FEATURES;
+               phy_dev->supported |= SUPPORTED_Pause;
+       }
+       else
+               phy_dev->supported &= PHY_BASIC_FEATURES;
+
+       phy_dev->advertising = phy_dev->supported;
+
+       fep->phy_dev = phy_dev;
+       fep->link = 0;
+       fep->full_duplex = 0;
+
+       printk(KERN_INFO
+               "%s: Freescale FEC PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n",
+               ndev->name,
+               fep->phy_dev->drv->name, dev_name(&fep->phy_dev->dev),
+               fep->phy_dev->irq);
+
+       return 0;
+}
+
+static int fec_enet_mii_init(struct platform_device *pdev)
+{
+       static struct mii_bus *fec0_mii_bus;
+       struct net_device *ndev = platform_get_drvdata(pdev);
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       const struct platform_device_id *id_entry =
+                               platform_get_device_id(fep->pdev);
+       int err = -ENXIO, i;
+
+       /*
+        * The dual fec interfaces are not equivalent with enet-mac.
+        * Here are the differences:
+        *
+        *  - fec0 supports MII & RMII modes while fec1 only supports RMII
+        *  - fec0 acts as the 1588 time master while fec1 is slave
+        *  - external phys can only be configured by fec0
+        *
+        * That is to say fec1 can not work independently. It only works
+        * when fec0 is working. The reason behind this design is that the
+        * second interface is added primarily for Switch mode.
+        *
+        * Because of the last point above, both phys are attached on fec0
+        * mdio interface in board design, and need to be configured by
+        * fec0 mii_bus.
+        */
+       if ((id_entry->driver_data & FEC_QUIRK_ENET_MAC) && fep->dev_id > 0) {
+               /* fec1 uses fec0 mii_bus */
+               if (mii_cnt && fec0_mii_bus) {
+                       fep->mii_bus = fec0_mii_bus;
+                       mii_cnt++;
+                       return 0;
+               }
+               return -ENOENT;
+       }
+
+       fep->mii_timeout = 0;
+
+       /*
+        * Set MII speed to 2.5 MHz (= clk_get_rate() / 2 * phy_speed)
+        *
+        * The formula for FEC MDC is 'ref_freq / (MII_SPEED x 2)' while
+        * for ENET-MAC is 'ref_freq / ((MII_SPEED + 1) x 2)'.  The i.MX28
+        * Reference Manual has an error on this, and gets fixed on i.MX6Q
+        * document.
+        */
+       fep->phy_speed = DIV_ROUND_UP(clk_get_rate(fep->clk_ahb), 5000000);
+       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC)
+               fep->phy_speed--;
+       fep->phy_speed <<= 1;
+       writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
+
+       fep->mii_bus = mdiobus_alloc();
+       if (fep->mii_bus == NULL) {
+               err = -ENOMEM;
+               goto err_out;
+       }
+
+       fep->mii_bus->name = "fec_enet_mii_bus";
+       fep->mii_bus->read = fec_enet_mdio_read;
+       fep->mii_bus->write = fec_enet_mdio_write;
+       fep->mii_bus->reset = fec_enet_mdio_reset;
+       snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+               pdev->name, fep->dev_id + 1);
+       fep->mii_bus->priv = fep;
+       fep->mii_bus->parent = &pdev->dev;
+
+       fep->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
+       if (!fep->mii_bus->irq) {
+               err = -ENOMEM;
+               goto err_out_free_mdiobus;
+       }
+
+       for (i = 0; i < PHY_MAX_ADDR; i++)
+               fep->mii_bus->irq[i] = PHY_POLL;
+
+       if (mdiobus_register(fep->mii_bus))
+               goto err_out_free_mdio_irq;
+
+       mii_cnt++;
+
+       /* save fec0 mii_bus */
+       if (id_entry->driver_data & FEC_QUIRK_ENET_MAC)
+               fec0_mii_bus = fep->mii_bus;
+
+       return 0;
+
+err_out_free_mdio_irq:
+       kfree(fep->mii_bus->irq);
+err_out_free_mdiobus:
+       mdiobus_free(fep->mii_bus);
+err_out:
+       return err;
+}
+
+static void fec_enet_mii_remove(struct fec_enet_private *fep)
+{
+       if (--mii_cnt == 0) {
+               mdiobus_unregister(fep->mii_bus);
+               kfree(fep->mii_bus->irq);
+               mdiobus_free(fep->mii_bus);
+       }
+}
+
+static int fec_enet_get_settings(struct net_device *ndev,
+                                 struct ethtool_cmd *cmd)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       struct phy_device *phydev = fep->phy_dev;
+
+       if (!phydev)
+               return -ENODEV;
+
+       return phy_ethtool_gset(phydev, cmd);
+}
+
+static int fec_enet_set_settings(struct net_device *ndev,
+                                struct ethtool_cmd *cmd)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       struct phy_device *phydev = fep->phy_dev;
+
+       if (!phydev)
+               return -ENODEV;
+
+       return phy_ethtool_sset(phydev, cmd);
+}
+
+static void fec_enet_get_drvinfo(struct net_device *ndev,
+                                struct ethtool_drvinfo *info)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+
+       strlcpy(info->driver, fep->pdev->dev.driver->name,
+               sizeof(info->driver));
+       strlcpy(info->version, "Revision: 1.0", sizeof(info->version));
+       strlcpy(info->bus_info, dev_name(&ndev->dev), sizeof(info->bus_info));
+}
+
+static int fec_enet_get_ts_info(struct net_device *ndev,
+                               struct ethtool_ts_info *info)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+
+       if (fep->bufdesc_ex) {
+
+               info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
+                                       SOF_TIMESTAMPING_RX_SOFTWARE |
+                                       SOF_TIMESTAMPING_SOFTWARE |
+                                       SOF_TIMESTAMPING_TX_HARDWARE |
+                                       SOF_TIMESTAMPING_RX_HARDWARE |
+                                       SOF_TIMESTAMPING_RAW_HARDWARE;
+               if (fep->ptp_clock)
+                       info->phc_index = ptp_clock_index(fep->ptp_clock);
+               else
+                       info->phc_index = -1;
+
+               info->tx_types = (1 << HWTSTAMP_TX_OFF) |
+                                (1 << HWTSTAMP_TX_ON);
+
+               info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
+                                  (1 << HWTSTAMP_FILTER_ALL);
+               return 0;
+       } else {
+               return ethtool_op_get_ts_info(ndev, info);
+       }
+}
+
+static void fec_enet_get_pauseparam(struct net_device *ndev,
+                                   struct ethtool_pauseparam *pause)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+
+       pause->autoneg = (fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) != 0;
+       pause->tx_pause = (fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) != 0;
+       pause->rx_pause = pause->tx_pause;
+}
+
+static int fec_enet_set_pauseparam(struct net_device *ndev,
+                                  struct ethtool_pauseparam *pause)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+
+       if (pause->tx_pause != pause->rx_pause) {
+               netdev_info(ndev,
+                       "hardware only support enable/disable both tx and rx");
+               return -EINVAL;
+       }
+
+       fep->pause_flag = 0;
+
+       /* tx pause must be same as rx pause */
+       fep->pause_flag |= pause->rx_pause ? FEC_PAUSE_FLAG_ENABLE : 0;
+       fep->pause_flag |= pause->autoneg ? FEC_PAUSE_FLAG_AUTONEG : 0;
+
+       if (pause->rx_pause || pause->autoneg) {
+               fep->phy_dev->supported |= ADVERTISED_Pause;
+               fep->phy_dev->advertising |= ADVERTISED_Pause;
+       } else {
+               fep->phy_dev->supported &= ~ADVERTISED_Pause;
+               fep->phy_dev->advertising &= ~ADVERTISED_Pause;
+       }
+
+       if (pause->autoneg) {
+               if (netif_running(ndev))
+                       fec_stop(ndev);
+               phy_start_aneg(fep->phy_dev);
+       }
+       if (netif_running(ndev))
+               fec_restart(ndev, 0);
+
+       return 0;
+}
+
+static const struct ethtool_ops fec_enet_ethtool_ops = {
+       .get_pauseparam         = fec_enet_get_pauseparam,
+       .set_pauseparam         = fec_enet_set_pauseparam,
+       .get_settings           = fec_enet_get_settings,
+       .set_settings           = fec_enet_set_settings,
+       .get_drvinfo            = fec_enet_get_drvinfo,
+       .get_link               = ethtool_op_get_link,
+       .get_ts_info            = fec_enet_get_ts_info,
+};
+
+static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       struct phy_device *phydev = fep->phy_dev;
+
+       if (!netif_running(ndev))
+               return -EINVAL;
+
+       if (!phydev)
+               return -ENODEV;
+
+       if (cmd == SIOCSHWTSTAMP && fep->bufdesc_ex)
+               return fec_ptp_ioctl(ndev, rq, cmd);
+
+       return phy_mii_ioctl(phydev, rq, cmd);
+}
+
+static void fec_enet_free_buffers(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       unsigned int i;
+       struct sk_buff *skb;
+       struct bufdesc  *bdp;
+
+       bdp = fep->rx_bd_base;
+       for (i = 0; i < RX_RING_SIZE; i++) {
+               skb = fep->rx_skbuff[i];
+
+               if (bdp->cbd_bufaddr)
+                       dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr,
+                                       FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE);
+               if (skb)
+                       dev_kfree_skb(skb);
+               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
+       }
+
+       bdp = fep->tx_bd_base;
+       for (i = 0; i < TX_RING_SIZE; i++)
+               kfree(fep->tx_bounce[i]);
+}
+
+static int fec_enet_alloc_buffers(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       unsigned int i;
+       struct sk_buff *skb;
+       struct bufdesc  *bdp;
+
+       bdp = fep->rx_bd_base;
+       for (i = 0; i < RX_RING_SIZE; i++) {
+               skb = netdev_alloc_skb(ndev, FEC_ENET_RX_FRSIZE);
+               if (!skb) {
+                       fec_enet_free_buffers(ndev);
+                       return -ENOMEM;
+               }
+               fep->rx_skbuff[i] = skb;
+
+               bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, skb->data,
+                               FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE);
+               bdp->cbd_sc = BD_ENET_RX_EMPTY;
+
+               if (fep->bufdesc_ex) {
+                       struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
+                       ebdp->cbd_esc = BD_ENET_RX_INT;
+               }
+
+               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
+       }
+
+       /* Set the last buffer to wrap. */
+       bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex);
+       bdp->cbd_sc |= BD_SC_WRAP;
+
+       bdp = fep->tx_bd_base;
+       for (i = 0; i < TX_RING_SIZE; i++) {
+               fep->tx_bounce[i] = kmalloc(FEC_ENET_TX_FRSIZE, GFP_KERNEL);
+
+               bdp->cbd_sc = 0;
+               bdp->cbd_bufaddr = 0;
+
+               if (fep->bufdesc_ex) {
+                       struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
+                       ebdp->cbd_esc = BD_ENET_RX_INT;
+               }
+
+               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
+       }
+
+       /* Set the last buffer to wrap. */
+       bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex);
+       bdp->cbd_sc |= BD_SC_WRAP;
+
+       return 0;
+}
+
+static int
+fec_enet_open(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       int ret;
+
+       napi_enable(&fep->napi);
+
+       /* I should reset the ring buffers here, but I don't yet know
+        * a simple way to do that.
+        */
+
+       ret = fec_enet_alloc_buffers(ndev);
+       if (ret)
+               return ret;
+
+       /* Probe and connect to PHY when open the interface */
+       ret = fec_enet_mii_probe(ndev);
+       if (ret) {
+               fec_enet_free_buffers(ndev);
+               return ret;
+       }
+       phy_start(fep->phy_dev);
+       netif_start_queue(ndev);
+       fep->opened = 1;
+       return 0;
+}
+
+static int
+fec_enet_close(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+
+       /* Don't know what to do yet. */
+       napi_disable(&fep->napi);
+       fep->opened = 0;
+       netif_stop_queue(ndev);
+       fec_stop(ndev);
+
+       if (fep->phy_dev) {
+               phy_stop(fep->phy_dev);
+               phy_disconnect(fep->phy_dev);
+       }
+
+       fec_enet_free_buffers(ndev);
+
+       return 0;
+}
+
+/* Set or clear the multicast filter for this adaptor.
+ * Skeleton taken from sunlance driver.
+ * The CPM Ethernet implementation allows Multicast as well as individual
+ * MAC address filtering.  Some of the drivers check to make sure it is
+ * a group multicast address, and discard those that are not.  I guess I
+ * will do the same for now, but just remove the test if you want
+ * individual filtering as well (do the upper net layers want or support
+ * this kind of feature?).
+ */
+
+#define HASH_BITS      6               /* #bits in hash */
+#define CRC32_POLY     0xEDB88320
+
+static void set_multicast_list(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       struct netdev_hw_addr *ha;
+       unsigned int i, bit, data, crc, tmp;
+       unsigned char hash;
+
+       if (ndev->flags & IFF_PROMISC) {
+               tmp = readl(fep->hwp + FEC_R_CNTRL);
+               tmp |= 0x8;
+               writel(tmp, fep->hwp + FEC_R_CNTRL);
+               return;
+       }
+
+       tmp = readl(fep->hwp + FEC_R_CNTRL);
+       tmp &= ~0x8;
+       writel(tmp, fep->hwp + FEC_R_CNTRL);
+
+       if (ndev->flags & IFF_ALLMULTI) {
+               /* Catch all multicast addresses, so set the
+                * filter to all 1's
+                */
+               writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+               writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+
+               return;
+       }
+
+       /* Clear filter and add the addresses in hash register
+        */
+       writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+       writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+
+       netdev_for_each_mc_addr(ha, ndev) {
+               /* calculate crc32 value of mac address */
+               crc = 0xffffffff;
+
+               for (i = 0; i < ndev->addr_len; i++) {
+                       data = ha->addr[i];
+                       for (bit = 0; bit < 8; bit++, data >>= 1) {
+                               crc = (crc >> 1) ^
+                               (((crc ^ data) & 1) ? CRC32_POLY : 0);
+                       }
+               }
+
+               /* only upper 6 bits (HASH_BITS) are used
+                * which point to specific bit in he hash registers
+                */
+               hash = (crc >> (32 - HASH_BITS)) & 0x3f;
+
+               if (hash > 31) {
+                       tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+                       tmp |= 1 << (hash - 32);
+                       writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+               } else {
+                       tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+                       tmp |= 1 << hash;
+                       writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+               }
+       }
+}
+
+/* Set a MAC change in hardware. */
+static int
+fec_set_mac_address(struct net_device *ndev, void *p)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       struct sockaddr *addr = p;
+
+       if (!is_valid_ether_addr(addr->sa_data))
+               return -EADDRNOTAVAIL;
+
+       memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
+
+       writel(ndev->dev_addr[3] | (ndev->dev_addr[2] << 8) |
+               (ndev->dev_addr[1] << 16) | (ndev->dev_addr[0] << 24),
+               fep->hwp + FEC_ADDR_LOW);
+       writel((ndev->dev_addr[5] << 16) | (ndev->dev_addr[4] << 24),
+               fep->hwp + FEC_ADDR_HIGH);
+       return 0;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/**
+ * fec_poll_controller - FEC Poll controller function
+ * @dev: The FEC network adapter
+ *
+ * Polled functionality used by netconsole and others in non interrupt mode
+ *
+ */
+static void fec_poll_controller(struct net_device *dev)
+{
+       int i;
+       struct fec_enet_private *fep = netdev_priv(dev);
+
+       for (i = 0; i < FEC_IRQ_NUM; i++) {
+               if (fep->irq[i] > 0) {
+                       disable_irq(fep->irq[i]);
+                       fec_enet_interrupt(fep->irq[i], dev);
+                       enable_irq(fep->irq[i]);
+               }
+       }
+}
+#endif
+
+static const struct net_device_ops fec_netdev_ops = {
+       .ndo_open               = fec_enet_open,
+       .ndo_stop               = fec_enet_close,
+       .ndo_start_xmit         = fec_enet_start_xmit,
+       .ndo_set_rx_mode        = set_multicast_list,
+       .ndo_change_mtu         = eth_change_mtu,
+       .ndo_validate_addr      = eth_validate_addr,
+       .ndo_tx_timeout         = fec_timeout,
+       .ndo_set_mac_address    = fec_set_mac_address,
+       .ndo_do_ioctl           = fec_enet_ioctl,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+       .ndo_poll_controller    = fec_poll_controller,
+#endif
+};
+
+ /*
+  * XXX:  We need to clean up on failure exits here.
+  *
+  */
+static int fec_enet_init(struct net_device *ndev)
+{
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       struct bufdesc *cbd_base;
+       struct bufdesc *bdp;
+       unsigned int i;
+
+       /* Allocate memory for buffer descriptors. */
+       cbd_base = dma_alloc_coherent(NULL, PAGE_SIZE, &fep->bd_dma,
+                                     GFP_KERNEL);
+       if (!cbd_base)
+               return -ENOMEM;
+
+       spin_lock_init(&fep->hw_lock);
+
+       fep->netdev = ndev;
+
+       /* Get the Ethernet address */
+       fec_get_mac(ndev);
+
+       /* Set receive and transmit descriptor base. */
+       fep->rx_bd_base = cbd_base;
+       if (fep->bufdesc_ex)
+               fep->tx_bd_base = (struct bufdesc *)
+                       (((struct bufdesc_ex *)cbd_base) + RX_RING_SIZE);
+       else
+               fep->tx_bd_base = cbd_base + RX_RING_SIZE;
+
+       /* The FEC Ethernet specific entries in the device structure */
+       ndev->watchdog_timeo = TX_TIMEOUT;
+       ndev->netdev_ops = &fec_netdev_ops;
+       ndev->ethtool_ops = &fec_enet_ethtool_ops;
+
+       writel(FEC_RX_DISABLED_IMASK, fep->hwp + FEC_IMASK);
+       netif_napi_add(ndev, &fep->napi, fec_enet_rx_napi, FEC_NAPI_WEIGHT);
+
+       /* Initialize the receive buffer descriptors. */
+       bdp = fep->rx_bd_base;
+       for (i = 0; i < RX_RING_SIZE; i++) {
+
+               /* Initialize the BD for every fragment in the page. */
+               bdp->cbd_sc = 0;
+               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
+       }
+
+       /* Set the last buffer to wrap */
+       bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex);
+       bdp->cbd_sc |= BD_SC_WRAP;
+
+       /* ...and the same for transmit */
+       bdp = fep->tx_bd_base;
+       fep->cur_tx = bdp;
+       for (i = 0; i < TX_RING_SIZE; i++) {
+
+               /* Initialize the BD for every fragment in the page. */
+               bdp->cbd_sc = 0;
+               bdp->cbd_bufaddr = 0;
+               bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex);
+       }
+
+       /* Set the last buffer to wrap */
+       bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex);
+       bdp->cbd_sc |= BD_SC_WRAP;
+       fep->dirty_tx = bdp;
+
+       fec_restart(ndev, 0);
+
+       return 0;
+}
+
+#ifdef CONFIG_OF
+static int fec_get_phy_mode_dt(struct platform_device *pdev)
+{
+       struct device_node *np = pdev->dev.of_node;
+
+       if (np)
+               return of_get_phy_mode(np);
+
+       return -ENODEV;
+}
+
+static void fec_reset_phy(struct platform_device *pdev)
+{
+       int err, phy_reset;
+       int msec = 1;
+       struct device_node *np = pdev->dev.of_node;
+
+       if (!np)
+               return;
+
+       of_property_read_u32(np, "phy-reset-duration", &msec);
+       /* A sane reset duration should not be longer than 1s */
+       if (msec > 1000)
+               msec = 1;
+
+       phy_reset = of_get_named_gpio(np, "phy-reset-gpios", 0);
+       if (!gpio_is_valid(phy_reset))
+               return;
+
+       err = devm_gpio_request_one(&pdev->dev, phy_reset,
+                                   GPIOF_OUT_INIT_LOW, "phy-reset");
+       if (err) {
+               dev_err(&pdev->dev, "failed to get phy-reset-gpios: %d\n", err);
+               return;
+       }
+       msleep(msec);
+       gpio_set_value(phy_reset, 1);
+}
+#else /* CONFIG_OF */
+static int fec_get_phy_mode_dt(struct platform_device *pdev)
+{
+       return -ENODEV;
+}
+
+static void fec_reset_phy(struct platform_device *pdev)
+{
+       /*
+        * In case of platform probe, the reset has been done
+        * by machine code.
+        */
+}
+#endif /* CONFIG_OF */
+
+static int
+fec_probe(struct platform_device *pdev)
+{
+       struct fec_enet_private *fep;
+       struct fec_platform_data *pdata;
+       struct net_device *ndev;
+       int i, irq, ret = 0;
+       struct resource *r;
+       const struct of_device_id *of_id;
+       static int dev_id;
+       struct pinctrl *pinctrl;
+       struct regulator *reg_phy;
+
+       of_id = of_match_device(fec_dt_ids, &pdev->dev);
+       if (of_id)
+               pdev->id_entry = of_id->data;
+
+       r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       if (!r)
+               return -ENXIO;
+
+       /* Init network device */
+       ndev = alloc_etherdev(sizeof(struct fec_enet_private));
+       if (!ndev)
+               return -ENOMEM;
+
+       SET_NETDEV_DEV(ndev, &pdev->dev);
+
+       /* setup board info structure */
+       fep = netdev_priv(ndev);
+
+       /* default enable pause frame auto negotiation */
+       if (pdev->id_entry &&
+           (pdev->id_entry->driver_data & FEC_QUIRK_HAS_GBIT))
+               fep->pause_flag |= FEC_PAUSE_FLAG_AUTONEG;
+
+       fep->hwp = devm_request_and_ioremap(&pdev->dev, r);
+       fep->pdev = pdev;
+       fep->dev_id = dev_id++;
+
+       fep->bufdesc_ex = 0;
+
+       if (!fep->hwp) {
+               ret = -ENOMEM;
+               goto failed_ioremap;
+       }
+
+       platform_set_drvdata(pdev, ndev);
+
+       ret = fec_get_phy_mode_dt(pdev);
+       if (ret < 0) {
+               pdata = pdev->dev.platform_data;
+               if (pdata)
+                       fep->phy_interface = pdata->phy;
+               else
+                       fep->phy_interface = PHY_INTERFACE_MODE_MII;
+       } else {
+               fep->phy_interface = ret;
+       }
+
+       pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+       if (IS_ERR(pinctrl)) {
+               ret = PTR_ERR(pinctrl);
+               goto failed_pin;
+       }
+
+       fep->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
+       if (IS_ERR(fep->clk_ipg)) {
+               ret = PTR_ERR(fep->clk_ipg);
+               goto failed_clk;
+       }
+
+       fep->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
+       if (IS_ERR(fep->clk_ahb)) {
+               ret = PTR_ERR(fep->clk_ahb);
+               goto failed_clk;
+       }
+
+       fep->clk_ptp = devm_clk_get(&pdev->dev, "ptp");
+       fep->bufdesc_ex =
+               pdev->id_entry->driver_data & FEC_QUIRK_HAS_BUFDESC_EX;
+       if (IS_ERR(fep->clk_ptp)) {
+               ret = PTR_ERR(fep->clk_ptp);
+               fep->bufdesc_ex = 0;
+       }
+
+       clk_prepare_enable(fep->clk_ahb);
+       clk_prepare_enable(fep->clk_ipg);
+       if (!IS_ERR(fep->clk_ptp))
+               clk_prepare_enable(fep->clk_ptp);
+
+       reg_phy = devm_regulator_get(&pdev->dev, "phy");
+       if (!IS_ERR(reg_phy)) {
+               ret = regulator_enable(reg_phy);
+               if (ret) {
+                       dev_err(&pdev->dev,
+                               "Failed to enable phy regulator: %d\n", ret);
+                       goto failed_regulator;
+               }
+       }
+
+       fec_reset_phy(pdev);
+
+       if (fep->bufdesc_ex)
+               fec_ptp_init(ndev, pdev);
+
+       ret = fec_enet_init(ndev);
+       if (ret)
+               goto failed_init;
+
+       for (i = 0; i < FEC_IRQ_NUM; i++) {
+               irq = platform_get_irq(pdev, i);
+               if (irq < 0) {
+                       if (i)
+                               break;
+                       ret = irq;
+                       goto failed_irq;
+               }
+               ret = request_irq(irq, fec_enet_interrupt, IRQF_DISABLED, pdev->name, ndev);
+               if (ret) {
+                       while (--i >= 0) {
+                               irq = platform_get_irq(pdev, i);
+                               free_irq(irq, ndev);
+                       }
+                       goto failed_irq;
+               }
+       }
+
+       ret = fec_enet_mii_init(pdev);
+       if (ret)
+               goto failed_mii_init;
+
+       /* Carrier starts down, phylib will bring it up */
+       netif_carrier_off(ndev);
+
+       ret = register_netdev(ndev);
+       if (ret)
+               goto failed_register;
+
+       return 0;
+
+failed_register:
+       fec_enet_mii_remove(fep);
+failed_mii_init:
+failed_init:
+       for (i = 0; i < FEC_IRQ_NUM; i++) {
+               irq = platform_get_irq(pdev, i);
+               if (irq > 0)
+                       free_irq(irq, ndev);
+       }
+failed_irq:
+failed_regulator:
+       clk_disable_unprepare(fep->clk_ahb);
+       clk_disable_unprepare(fep->clk_ipg);
+       if (!IS_ERR(fep->clk_ptp))
+               clk_disable_unprepare(fep->clk_ptp);
+failed_pin:
+failed_clk:
+failed_ioremap:
+       free_netdev(ndev);
+
+       return ret;
+}
+
+static int
+fec_drv_remove(struct platform_device *pdev)
+{
+       struct net_device *ndev = platform_get_drvdata(pdev);
+       struct fec_enet_private *fep = netdev_priv(ndev);
+       int i;
+
+       unregister_netdev(ndev);
+       fec_enet_mii_remove(fep);
+       del_timer_sync(&fep->time_keep);
+       clk_disable_unprepare(fep->clk_ptp);
+       if (fep->ptp_clock)
+               ptp_clock_unregister(fep->ptp_clock);
+       clk_disable_unprepare(fep->clk_ahb);
+       clk_disable_unprepare(fep->clk_ipg);
+       for (i = 0; i < FEC_IRQ_NUM; i++) {
+               int irq = platform_get_irq(pdev, i);
+               if (irq > 0)
+                       free_irq(irq, ndev);
+       }
+       free_netdev(ndev);
+
+       platform_set_drvdata(pdev, NULL);
+
+       return 0;
+}
+
+#ifdef CONFIG_PM
+static int
+fec_suspend(struct device *dev)
+{
+       struct net_device *ndev = dev_get_drvdata(dev);
+       struct fec_enet_private *fep = netdev_priv(ndev);
+
+       if (netif_running(ndev)) {
+               fec_stop(ndev);
+               netif_device_detach(ndev);
+       }
+       clk_disable_unprepare(fep->clk_ahb);
+       clk_disable_unprepare(fep->clk_ipg);
+
+       return 0;
+}
+
+static int
+fec_resume(struct device *dev)
+{
+       struct net_device *ndev = dev_get_drvdata(dev);
+       struct fec_enet_private *fep = netdev_priv(ndev);
+
+       clk_prepare_enable(fep->clk_ahb);
+       clk_prepare_enable(fep->clk_ipg);
+       if (netif_running(ndev)) {
+               fec_restart(ndev, fep->full_duplex);
+               netif_device_attach(ndev);
+       }
+
+       return 0;
+}
+
+static const struct dev_pm_ops fec_pm_ops = {
+       .suspend        = fec_suspend,
+       .resume         = fec_resume,
+       .freeze         = fec_suspend,
+       .thaw           = fec_resume,
+       .poweroff       = fec_suspend,
+       .restore        = fec_resume,
+};
+#endif
+
+static struct platform_driver fec_driver = {
+       .driver = {
+               .name   = DRIVER_NAME,
+               .owner  = THIS_MODULE,
+#ifdef CONFIG_PM
+               .pm     = &fec_pm_ops,
+#endif
+               .of_match_table = fec_dt_ids,
+       },
+       .id_table = fec_devtype,
+       .probe  = fec_probe,
+       .remove = fec_drv_remove,
+};
+
+module_platform_driver(fec_driver);
+
+MODULE_LICENSE("GPL");
index 0d8df400a4798c06a1345773b9a0f821b4ab7cb2..1f17ca0f22019d8350af2affdcc6b00739ce966f 100644 (file)
@@ -128,7 +128,6 @@ void fec_ptp_start_cyclecounter(struct net_device *ndev)
 
        spin_unlock_irqrestore(&fep->tmreg_lock, flags);
 }
-EXPORT_SYMBOL(fec_ptp_start_cyclecounter);
 
 /**
  * fec_ptp_adjfreq - adjust ptp cycle frequency
@@ -319,7 +318,6 @@ int fec_ptp_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd)
        return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
            -EFAULT : 0;
 }
-EXPORT_SYMBOL(fec_ptp_ioctl);
 
 /**
  * fec_time_keep - call timecounter_read every second to avoid timer overrun
@@ -385,4 +383,3 @@ void fec_ptp_init(struct net_device *ndev, struct platform_device *pdev)
                pr_info("registered PHC device on %s\n", ndev->name);
        }
 }
-EXPORT_SYMBOL(fec_ptp_init);