bfin_mac: Move the Analog Devices Inc driver
authorJeff Kirsher <jeffrey.t.kirsher@intel.com>
Sat, 18 Jun 2011 07:01:26 +0000 (00:01 -0700)
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>
Fri, 12 Aug 2011 19:38:13 +0000 (12:38 -0700)
Move the Analog Devices Inc driver into drivers/net/ethernet/adi/ and
make the necessary Kconfig and Makefile changes.

CC: <uclinux-dist-devel@blackfin.uclinux.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Bob Liu <bob.liu@analog.com>
MAINTAINERS
drivers/net/Kconfig
drivers/net/Makefile
drivers/net/bfin_mac.c [deleted file]
drivers/net/bfin_mac.h [deleted file]
drivers/net/ethernet/Kconfig
drivers/net/ethernet/Makefile
drivers/net/ethernet/adi/Kconfig [new file with mode: 0644]
drivers/net/ethernet/adi/Makefile [new file with mode: 0644]
drivers/net/ethernet/adi/bfin_mac.c [new file with mode: 0644]
drivers/net/ethernet/adi/bfin_mac.h [new file with mode: 0644]

index 879c17ebf38a20081eb9c6995c340e8d7774957b..15d70213be536ea88b1ee84e233ac0cfdee72153 100644 (file)
@@ -1446,7 +1446,7 @@ BLACKFIN EMAC DRIVER
 L:     uclinux-dist-devel@blackfin.uclinux.org
 W:     http://blackfin.uclinux.org
 S:     Supported
-F:     drivers/net/bfin_mac.*
+F:     drivers/net/ethernet/adi/
 
 BLACKFIN RTC DRIVER
 M:     Mike Frysinger <vapier.adi@gmail.com>
index fd333803be8cc6ea264ebb3a8a2f28f6f0a48725..10c25b5bb2fec4b621b51ce350eba7154b06e31a 100644 (file)
@@ -252,52 +252,6 @@ config SH_ETH
          This driver supporting CPUs are:
                - SH7710, SH7712, SH7763, SH7619, SH7724, and SH7757.
 
-config BFIN_MAC
-       tristate "Blackfin on-chip MAC support"
-       depends on NET_ETHERNET && (BF516 || BF518 || BF526 || BF527 || BF536 || BF537)
-       select CRC32
-       select MII
-       select PHYLIB
-       select BFIN_MAC_USE_L1 if DMA_UNCACHED_NONE
-       help
-         This is the driver for Blackfin on-chip mac device. Say Y if you want it
-         compiled into the kernel. This driver is also available as a module
-         ( = code which can be inserted in and removed from the running kernel
-         whenever you want). The module will be called bfin_mac.
-
-config BFIN_MAC_USE_L1
-       bool "Use L1 memory for rx/tx packets"
-       depends on BFIN_MAC && (BF527 || BF537)
-       default y
-       help
-         To get maximum network performance, you should use L1 memory as rx/tx buffers.
-         Say N here if you want to reserve L1 memory for other uses.
-
-config BFIN_TX_DESC_NUM
-       int "Number of transmit buffer packets"
-       depends on BFIN_MAC
-       range 6 10 if BFIN_MAC_USE_L1
-       range 10 100
-       default "10"
-       help
-         Set the number of buffer packets used in driver.
-
-config BFIN_RX_DESC_NUM
-       int "Number of receive buffer packets"
-       depends on BFIN_MAC
-       range 20 100 if BFIN_MAC_USE_L1
-       range 20 800
-       default "20"
-       help
-         Set the number of buffer packets used in driver.
-
-config BFIN_MAC_USE_HWSTAMP
-       bool "Use IEEE 1588 hwstamp"
-       depends on BFIN_MAC && BF518
-       default y
-       help
-         To support the IEEE 1588 Precision Time Protocol (PTP), select y here
-
 config NET_NETX
        tristate "NetX Ethernet support"
        select MII
index 8e6dbd741206fe0aeb831b068a0a87262971f3a5..d249d76ce2f98d4b0039ac4aabdd8c5af574d1ce 100644 (file)
@@ -57,7 +57,6 @@ obj-$(CONFIG_EQUALIZER) += eql.o
 obj-$(CONFIG_TUN) += tun.o
 obj-$(CONFIG_VETH) += veth.o
 obj-$(CONFIG_NET_NETX) += netx-eth.o
-obj-$(CONFIG_BFIN_MAC) += bfin_mac.o
 obj-$(CONFIG_DM9000) += dm9000.o
 obj-$(CONFIG_ENC28J60) += enc28j60.o
 obj-$(CONFIG_ETHOC) += ethoc.o
diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c
deleted file mode 100644 (file)
index 6c019e1..0000000
+++ /dev/null
@@ -1,1767 +0,0 @@
-/*
- * Blackfin On-Chip MAC Driver
- *
- * Copyright 2004-2010 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- *
- * Licensed under the GPL-2 or later.
- */
-
-#define DRV_VERSION    "1.1"
-#define DRV_DESC       "Blackfin on-chip Ethernet MAC driver"
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/ioport.h>
-#include <linux/crc32.h>
-#include <linux/device.h>
-#include <linux/spinlock.h>
-#include <linux/mii.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/skbuff.h>
-#include <linux/platform_device.h>
-
-#include <asm/dma.h>
-#include <linux/dma-mapping.h>
-
-#include <asm/div64.h>
-#include <asm/dpmc.h>
-#include <asm/blackfin.h>
-#include <asm/cacheflush.h>
-#include <asm/portmux.h>
-#include <mach/pll.h>
-
-#include "bfin_mac.h"
-
-MODULE_AUTHOR("Bryan Wu, Luke Yang");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION(DRV_DESC);
-MODULE_ALIAS("platform:bfin_mac");
-
-#if defined(CONFIG_BFIN_MAC_USE_L1)
-# define bfin_mac_alloc(dma_handle, size, num)  l1_data_sram_zalloc(size*num)
-# define bfin_mac_free(dma_handle, ptr, num)    l1_data_sram_free(ptr)
-#else
-# define bfin_mac_alloc(dma_handle, size, num) \
-       dma_alloc_coherent(NULL, size*num, dma_handle, GFP_KERNEL)
-# define bfin_mac_free(dma_handle, ptr, num) \
-       dma_free_coherent(NULL, sizeof(*ptr)*num, ptr, dma_handle)
-#endif
-
-#define PKT_BUF_SZ 1580
-
-#define MAX_TIMEOUT_CNT        500
-
-/* pointers to maintain transmit list */
-static struct net_dma_desc_tx *tx_list_head;
-static struct net_dma_desc_tx *tx_list_tail;
-static struct net_dma_desc_rx *rx_list_head;
-static struct net_dma_desc_rx *rx_list_tail;
-static struct net_dma_desc_rx *current_rx_ptr;
-static struct net_dma_desc_tx *current_tx_ptr;
-static struct net_dma_desc_tx *tx_desc;
-static struct net_dma_desc_rx *rx_desc;
-
-static void desc_list_free(void)
-{
-       struct net_dma_desc_rx *r;
-       struct net_dma_desc_tx *t;
-       int i;
-#if !defined(CONFIG_BFIN_MAC_USE_L1)
-       dma_addr_t dma_handle = 0;
-#endif
-
-       if (tx_desc) {
-               t = tx_list_head;
-               for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) {
-                       if (t) {
-                               if (t->skb) {
-                                       dev_kfree_skb(t->skb);
-                                       t->skb = NULL;
-                               }
-                               t = t->next;
-                       }
-               }
-               bfin_mac_free(dma_handle, tx_desc, CONFIG_BFIN_TX_DESC_NUM);
-       }
-
-       if (rx_desc) {
-               r = rx_list_head;
-               for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) {
-                       if (r) {
-                               if (r->skb) {
-                                       dev_kfree_skb(r->skb);
-                                       r->skb = NULL;
-                               }
-                               r = r->next;
-                       }
-               }
-               bfin_mac_free(dma_handle, rx_desc, CONFIG_BFIN_RX_DESC_NUM);
-       }
-}
-
-static int desc_list_init(void)
-{
-       int i;
-       struct sk_buff *new_skb;
-#if !defined(CONFIG_BFIN_MAC_USE_L1)
-       /*
-        * This dma_handle is useless in Blackfin dma_alloc_coherent().
-        * The real dma handler is the return value of dma_alloc_coherent().
-        */
-       dma_addr_t dma_handle;
-#endif
-
-       tx_desc = bfin_mac_alloc(&dma_handle,
-                               sizeof(struct net_dma_desc_tx),
-                               CONFIG_BFIN_TX_DESC_NUM);
-       if (tx_desc == NULL)
-               goto init_error;
-
-       rx_desc = bfin_mac_alloc(&dma_handle,
-                               sizeof(struct net_dma_desc_rx),
-                               CONFIG_BFIN_RX_DESC_NUM);
-       if (rx_desc == NULL)
-               goto init_error;
-
-       /* init tx_list */
-       tx_list_head = tx_list_tail = tx_desc;
-
-       for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) {
-               struct net_dma_desc_tx *t = tx_desc + i;
-               struct dma_descriptor *a = &(t->desc_a);
-               struct dma_descriptor *b = &(t->desc_b);
-
-               /*
-                * disable DMA
-                * read from memory WNR = 0
-                * wordsize is 32 bits
-                * 6 half words is desc size
-                * large desc flow
-                */
-               a->config = WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
-               a->start_addr = (unsigned long)t->packet;
-               a->x_count = 0;
-               a->next_dma_desc = b;
-
-               /*
-                * enabled DMA
-                * write to memory WNR = 1
-                * wordsize is 32 bits
-                * disable interrupt
-                * 6 half words is desc size
-                * large desc flow
-                */
-               b->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
-               b->start_addr = (unsigned long)(&(t->status));
-               b->x_count = 0;
-
-               t->skb = NULL;
-               tx_list_tail->desc_b.next_dma_desc = a;
-               tx_list_tail->next = t;
-               tx_list_tail = t;
-       }
-       tx_list_tail->next = tx_list_head;      /* tx_list is a circle */
-       tx_list_tail->desc_b.next_dma_desc = &(tx_list_head->desc_a);
-       current_tx_ptr = tx_list_head;
-
-       /* init rx_list */
-       rx_list_head = rx_list_tail = rx_desc;
-
-       for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) {
-               struct net_dma_desc_rx *r = rx_desc + i;
-               struct dma_descriptor *a = &(r->desc_a);
-               struct dma_descriptor *b = &(r->desc_b);
-
-               /* allocate a new skb for next time receive */
-               new_skb = dev_alloc_skb(PKT_BUF_SZ + NET_IP_ALIGN);
-               if (!new_skb) {
-                       pr_notice("init: low on mem - packet dropped\n");
-                       goto init_error;
-               }
-               skb_reserve(new_skb, NET_IP_ALIGN);
-               /* Invidate the data cache of skb->data range when it is write back
-                * cache. It will prevent overwritting the new data from DMA
-                */
-               blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
-                                        (unsigned long)new_skb->end);
-               r->skb = new_skb;
-
-               /*
-                * enabled DMA
-                * write to memory WNR = 1
-                * wordsize is 32 bits
-                * disable interrupt
-                * 6 half words is desc size
-                * large desc flow
-                */
-               a->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
-               /* since RXDWA is enabled */
-               a->start_addr = (unsigned long)new_skb->data - 2;
-               a->x_count = 0;
-               a->next_dma_desc = b;
-
-               /*
-                * enabled DMA
-                * write to memory WNR = 1
-                * wordsize is 32 bits
-                * enable interrupt
-                * 6 half words is desc size
-                * large desc flow
-                */
-               b->config = DMAEN | WNR | WDSIZE_32 | DI_EN |
-                               NDSIZE_6 | DMAFLOW_LARGE;
-               b->start_addr = (unsigned long)(&(r->status));
-               b->x_count = 0;
-
-               rx_list_tail->desc_b.next_dma_desc = a;
-               rx_list_tail->next = r;
-               rx_list_tail = r;
-       }
-       rx_list_tail->next = rx_list_head;      /* rx_list is a circle */
-       rx_list_tail->desc_b.next_dma_desc = &(rx_list_head->desc_a);
-       current_rx_ptr = rx_list_head;
-
-       return 0;
-
-init_error:
-       desc_list_free();
-       pr_err("kmalloc failed\n");
-       return -ENOMEM;
-}
-
-
-/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
-
-/*
- * MII operations
- */
-/* Wait until the previous MDC/MDIO transaction has completed */
-static int bfin_mdio_poll(void)
-{
-       int timeout_cnt = MAX_TIMEOUT_CNT;
-
-       /* poll the STABUSY bit */
-       while ((bfin_read_EMAC_STAADD()) & STABUSY) {
-               udelay(1);
-               if (timeout_cnt-- < 0) {
-                       pr_err("wait MDC/MDIO transaction to complete timeout\n");
-                       return -ETIMEDOUT;
-               }
-       }
-
-       return 0;
-}
-
-/* Read an off-chip register in a PHY through the MDC/MDIO port */
-static int bfin_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum)
-{
-       int ret;
-
-       ret = bfin_mdio_poll();
-       if (ret)
-               return ret;
-
-       /* read mode */
-       bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) |
-                               SET_REGAD((u16) regnum) |
-                               STABUSY);
-
-       ret = bfin_mdio_poll();
-       if (ret)
-               return ret;
-
-       return (int) bfin_read_EMAC_STADAT();
-}
-
-/* Write an off-chip register in a PHY through the MDC/MDIO port */
-static int bfin_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum,
-                             u16 value)
-{
-       int ret;
-
-       ret = bfin_mdio_poll();
-       if (ret)
-               return ret;
-
-       bfin_write_EMAC_STADAT((u32) value);
-
-       /* write mode */
-       bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) |
-                               SET_REGAD((u16) regnum) |
-                               STAOP |
-                               STABUSY);
-
-       return bfin_mdio_poll();
-}
-
-static int bfin_mdiobus_reset(struct mii_bus *bus)
-{
-       return 0;
-}
-
-static void bfin_mac_adjust_link(struct net_device *dev)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-       struct phy_device *phydev = lp->phydev;
-       unsigned long flags;
-       int new_state = 0;
-
-       spin_lock_irqsave(&lp->lock, flags);
-       if (phydev->link) {
-               /* Now we make sure that we can be in full duplex mode.
-                * If not, we operate in half-duplex mode. */
-               if (phydev->duplex != lp->old_duplex) {
-                       u32 opmode = bfin_read_EMAC_OPMODE();
-                       new_state = 1;
-
-                       if (phydev->duplex)
-                               opmode |= FDMODE;
-                       else
-                               opmode &= ~(FDMODE);
-
-                       bfin_write_EMAC_OPMODE(opmode);
-                       lp->old_duplex = phydev->duplex;
-               }
-
-               if (phydev->speed != lp->old_speed) {
-                       if (phydev->interface == PHY_INTERFACE_MODE_RMII) {
-                               u32 opmode = bfin_read_EMAC_OPMODE();
-                               switch (phydev->speed) {
-                               case 10:
-                                       opmode |= RMII_10;
-                                       break;
-                               case 100:
-                                       opmode &= ~RMII_10;
-                                       break;
-                               default:
-                                       netdev_warn(dev,
-                                               "Ack! Speed (%d) is not 10/100!\n",
-                                               phydev->speed);
-                                       break;
-                               }
-                               bfin_write_EMAC_OPMODE(opmode);
-                       }
-
-                       new_state = 1;
-                       lp->old_speed = phydev->speed;
-               }
-
-               if (!lp->old_link) {
-                       new_state = 1;
-                       lp->old_link = 1;
-               }
-       } else if (lp->old_link) {
-               new_state = 1;
-               lp->old_link = 0;
-               lp->old_speed = 0;
-               lp->old_duplex = -1;
-       }
-
-       if (new_state) {
-               u32 opmode = bfin_read_EMAC_OPMODE();
-               phy_print_status(phydev);
-               pr_debug("EMAC_OPMODE = 0x%08x\n", opmode);
-       }
-
-       spin_unlock_irqrestore(&lp->lock, flags);
-}
-
-/* MDC  = 2.5 MHz */
-#define MDC_CLK 2500000
-
-static int mii_probe(struct net_device *dev, int phy_mode)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-       struct phy_device *phydev = NULL;
-       unsigned short sysctl;
-       int i;
-       u32 sclk, mdc_div;
-
-       /* Enable PHY output early */
-       if (!(bfin_read_VR_CTL() & CLKBUFOE))
-               bfin_write_VR_CTL(bfin_read_VR_CTL() | CLKBUFOE);
-
-       sclk = get_sclk();
-       mdc_div = ((sclk / MDC_CLK) / 2) - 1;
-
-       sysctl = bfin_read_EMAC_SYSCTL();
-       sysctl = (sysctl & ~MDCDIV) | SET_MDCDIV(mdc_div);
-       bfin_write_EMAC_SYSCTL(sysctl);
-
-       /* search for connected PHY device */
-       for (i = 0; i < PHY_MAX_ADDR; ++i) {
-               struct phy_device *const tmp_phydev = lp->mii_bus->phy_map[i];
-
-               if (!tmp_phydev)
-                       continue; /* no PHY here... */
-
-               phydev = tmp_phydev;
-               break; /* found it */
-       }
-
-       /* now we are supposed to have a proper phydev, to attach to... */
-       if (!phydev) {
-               netdev_err(dev, "no phy device found\n");
-               return -ENODEV;
-       }
-
-       if (phy_mode != PHY_INTERFACE_MODE_RMII &&
-               phy_mode != PHY_INTERFACE_MODE_MII) {
-               netdev_err(dev, "invalid phy interface mode\n");
-               return -EINVAL;
-       }
-
-       phydev = phy_connect(dev, dev_name(&phydev->dev), &bfin_mac_adjust_link,
-                       0, phy_mode);
-
-       if (IS_ERR(phydev)) {
-               netdev_err(dev, "could not attach PHY\n");
-               return PTR_ERR(phydev);
-       }
-
-       /* mask with MAC supported features */
-       phydev->supported &= (SUPPORTED_10baseT_Half
-                             | SUPPORTED_10baseT_Full
-                             | SUPPORTED_100baseT_Half
-                             | SUPPORTED_100baseT_Full
-                             | SUPPORTED_Autoneg
-                             | SUPPORTED_Pause | SUPPORTED_Asym_Pause
-                             | SUPPORTED_MII
-                             | SUPPORTED_TP);
-
-       phydev->advertising = phydev->supported;
-
-       lp->old_link = 0;
-       lp->old_speed = 0;
-       lp->old_duplex = -1;
-       lp->phydev = phydev;
-
-       pr_info("attached PHY driver [%s] "
-               "(mii_bus:phy_addr=%s, irq=%d, mdc_clk=%dHz(mdc_div=%d)@sclk=%dMHz)\n",
-               phydev->drv->name, dev_name(&phydev->dev), phydev->irq,
-               MDC_CLK, mdc_div, sclk/1000000);
-
-       return 0;
-}
-
-/*
- * Ethtool support
- */
-
-/*
- * interrupt routine for magic packet wakeup
- */
-static irqreturn_t bfin_mac_wake_interrupt(int irq, void *dev_id)
-{
-       return IRQ_HANDLED;
-}
-
-static int
-bfin_mac_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-
-       if (lp->phydev)
-               return phy_ethtool_gset(lp->phydev, cmd);
-
-       return -EINVAL;
-}
-
-static int
-bfin_mac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-
-       if (!capable(CAP_NET_ADMIN))
-               return -EPERM;
-
-       if (lp->phydev)
-               return phy_ethtool_sset(lp->phydev, cmd);
-
-       return -EINVAL;
-}
-
-static void bfin_mac_ethtool_getdrvinfo(struct net_device *dev,
-                                       struct ethtool_drvinfo *info)
-{
-       strcpy(info->driver, KBUILD_MODNAME);
-       strcpy(info->version, DRV_VERSION);
-       strcpy(info->fw_version, "N/A");
-       strcpy(info->bus_info, dev_name(&dev->dev));
-}
-
-static void bfin_mac_ethtool_getwol(struct net_device *dev,
-       struct ethtool_wolinfo *wolinfo)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-
-       wolinfo->supported = WAKE_MAGIC;
-       wolinfo->wolopts = lp->wol;
-}
-
-static int bfin_mac_ethtool_setwol(struct net_device *dev,
-       struct ethtool_wolinfo *wolinfo)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-       int rc;
-
-       if (wolinfo->wolopts & (WAKE_MAGICSECURE |
-                               WAKE_UCAST |
-                               WAKE_MCAST |
-                               WAKE_BCAST |
-                               WAKE_ARP))
-               return -EOPNOTSUPP;
-
-       lp->wol = wolinfo->wolopts;
-
-       if (lp->wol && !lp->irq_wake_requested) {
-               /* register wake irq handler */
-               rc = request_irq(IRQ_MAC_WAKEDET, bfin_mac_wake_interrupt,
-                                IRQF_DISABLED, "EMAC_WAKE", dev);
-               if (rc)
-                       return rc;
-               lp->irq_wake_requested = true;
-       }
-
-       if (!lp->wol && lp->irq_wake_requested) {
-               free_irq(IRQ_MAC_WAKEDET, dev);
-               lp->irq_wake_requested = false;
-       }
-
-       /* Make sure the PHY driver doesn't suspend */
-       device_init_wakeup(&dev->dev, lp->wol);
-
-       return 0;
-}
-
-static const struct ethtool_ops bfin_mac_ethtool_ops = {
-       .get_settings = bfin_mac_ethtool_getsettings,
-       .set_settings = bfin_mac_ethtool_setsettings,
-       .get_link = ethtool_op_get_link,
-       .get_drvinfo = bfin_mac_ethtool_getdrvinfo,
-       .get_wol = bfin_mac_ethtool_getwol,
-       .set_wol = bfin_mac_ethtool_setwol,
-};
-
-/**************************************************************************/
-static void setup_system_regs(struct net_device *dev)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-       int i;
-       unsigned short sysctl;
-
-       /*
-        * Odd word alignment for Receive Frame DMA word
-        * Configure checksum support and rcve frame word alignment
-        */
-       sysctl = bfin_read_EMAC_SYSCTL();
-       /*
-        * check if interrupt is requested for any PHY,
-        * enable PHY interrupt only if needed
-        */
-       for (i = 0; i < PHY_MAX_ADDR; ++i)
-               if (lp->mii_bus->irq[i] != PHY_POLL)
-                       break;
-       if (i < PHY_MAX_ADDR)
-               sysctl |= PHYIE;
-       sysctl |= RXDWA;
-#if defined(BFIN_MAC_CSUM_OFFLOAD)
-       sysctl |= RXCKS;
-#else
-       sysctl &= ~RXCKS;
-#endif
-       bfin_write_EMAC_SYSCTL(sysctl);
-
-       bfin_write_EMAC_MMC_CTL(RSTC | CROLL);
-
-       /* Set vlan regs to let 1522 bytes long packets pass through */
-       bfin_write_EMAC_VLAN1(lp->vlan1_mask);
-       bfin_write_EMAC_VLAN2(lp->vlan2_mask);
-
-       /* Initialize the TX DMA channel registers */
-       bfin_write_DMA2_X_COUNT(0);
-       bfin_write_DMA2_X_MODIFY(4);
-       bfin_write_DMA2_Y_COUNT(0);
-       bfin_write_DMA2_Y_MODIFY(0);
-
-       /* Initialize the RX DMA channel registers */
-       bfin_write_DMA1_X_COUNT(0);
-       bfin_write_DMA1_X_MODIFY(4);
-       bfin_write_DMA1_Y_COUNT(0);
-       bfin_write_DMA1_Y_MODIFY(0);
-}
-
-static void setup_mac_addr(u8 *mac_addr)
-{
-       u32 addr_low = le32_to_cpu(*(__le32 *) & mac_addr[0]);
-       u16 addr_hi = le16_to_cpu(*(__le16 *) & mac_addr[4]);
-
-       /* this depends on a little-endian machine */
-       bfin_write_EMAC_ADDRLO(addr_low);
-       bfin_write_EMAC_ADDRHI(addr_hi);
-}
-
-static int bfin_mac_set_mac_address(struct net_device *dev, void *p)
-{
-       struct sockaddr *addr = p;
-       if (netif_running(dev))
-               return -EBUSY;
-       memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
-       setup_mac_addr(dev->dev_addr);
-       return 0;
-}
-
-#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
-#define bfin_mac_hwtstamp_is_none(cfg) ((cfg) == HWTSTAMP_FILTER_NONE)
-
-static int bfin_mac_hwtstamp_ioctl(struct net_device *netdev,
-               struct ifreq *ifr, int cmd)
-{
-       struct hwtstamp_config config;
-       struct bfin_mac_local *lp = netdev_priv(netdev);
-       u16 ptpctl;
-       u32 ptpfv1, ptpfv2, ptpfv3, ptpfoff;
-
-       if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
-               return -EFAULT;
-
-       pr_debug("%s config flag:0x%x, tx_type:0x%x, rx_filter:0x%x\n",
-                       __func__, config.flags, config.tx_type, config.rx_filter);
-
-       /* reserved for future extensions */
-       if (config.flags)
-               return -EINVAL;
-
-       if ((config.tx_type != HWTSTAMP_TX_OFF) &&
-                       (config.tx_type != HWTSTAMP_TX_ON))
-               return -ERANGE;
-
-       ptpctl = bfin_read_EMAC_PTP_CTL();
-
-       switch (config.rx_filter) {
-       case HWTSTAMP_FILTER_NONE:
-               /*
-                * Dont allow any timestamping
-                */
-               ptpfv3 = 0xFFFFFFFF;
-               bfin_write_EMAC_PTP_FV3(ptpfv3);
-               break;
-       case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
-       case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
-       case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
-               /*
-                * Clear the five comparison mask bits (bits[12:8]) in EMAC_PTP_CTL)
-                * to enable all the field matches.
-                */
-               ptpctl &= ~0x1F00;
-               bfin_write_EMAC_PTP_CTL(ptpctl);
-               /*
-                * Keep the default values of the EMAC_PTP_FOFF register.
-                */
-               ptpfoff = 0x4A24170C;
-               bfin_write_EMAC_PTP_FOFF(ptpfoff);
-               /*
-                * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2
-                * registers.
-                */
-               ptpfv1 = 0x11040800;
-               bfin_write_EMAC_PTP_FV1(ptpfv1);
-               ptpfv2 = 0x0140013F;
-               bfin_write_EMAC_PTP_FV2(ptpfv2);
-               /*
-                * The default value (0xFFFC) allows the timestamping of both
-                * received Sync messages and Delay_Req messages.
-                */
-               ptpfv3 = 0xFFFFFFFC;
-               bfin_write_EMAC_PTP_FV3(ptpfv3);
-
-               config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
-               break;
-       case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
-       case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
-       case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
-               /* Clear all five comparison mask bits (bits[12:8]) in the
-                * EMAC_PTP_CTL register to enable all the field matches.
-                */
-               ptpctl &= ~0x1F00;
-               bfin_write_EMAC_PTP_CTL(ptpctl);
-               /*
-                * Keep the default values of the EMAC_PTP_FOFF register, except set
-                * the PTPCOF field to 0x2A.
-                */
-               ptpfoff = 0x2A24170C;
-               bfin_write_EMAC_PTP_FOFF(ptpfoff);
-               /*
-                * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2
-                * registers.
-                */
-               ptpfv1 = 0x11040800;
-               bfin_write_EMAC_PTP_FV1(ptpfv1);
-               ptpfv2 = 0x0140013F;
-               bfin_write_EMAC_PTP_FV2(ptpfv2);
-               /*
-                * To allow the timestamping of Pdelay_Req and Pdelay_Resp, set
-                * the value to 0xFFF0.
-                */
-               ptpfv3 = 0xFFFFFFF0;
-               bfin_write_EMAC_PTP_FV3(ptpfv3);
-
-               config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT;
-               break;
-       case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
-       case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
-       case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
-               /*
-                * Clear bits 8 and 12 of the EMAC_PTP_CTL register to enable only the
-                * EFTM and PTPCM field comparison.
-                */
-               ptpctl &= ~0x1100;
-               bfin_write_EMAC_PTP_CTL(ptpctl);
-               /*
-                * Keep the default values of all the fields of the EMAC_PTP_FOFF
-                * register, except set the PTPCOF field to 0x0E.
-                */
-               ptpfoff = 0x0E24170C;
-               bfin_write_EMAC_PTP_FOFF(ptpfoff);
-               /*
-                * Program bits [15:0] of the EMAC_PTP_FV1 register to 0x88F7, which
-                * corresponds to PTP messages on the MAC layer.
-                */
-               ptpfv1 = 0x110488F7;
-               bfin_write_EMAC_PTP_FV1(ptpfv1);
-               ptpfv2 = 0x0140013F;
-               bfin_write_EMAC_PTP_FV2(ptpfv2);
-               /*
-                * To allow the timestamping of Pdelay_Req and Pdelay_Resp
-                * messages, set the value to 0xFFF0.
-                */
-               ptpfv3 = 0xFFFFFFF0;
-               bfin_write_EMAC_PTP_FV3(ptpfv3);
-
-               config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
-               break;
-       default:
-               return -ERANGE;
-       }
-
-       if (config.tx_type == HWTSTAMP_TX_OFF &&
-           bfin_mac_hwtstamp_is_none(config.rx_filter)) {
-               ptpctl &= ~PTP_EN;
-               bfin_write_EMAC_PTP_CTL(ptpctl);
-
-               SSYNC();
-       } else {
-               ptpctl |= PTP_EN;
-               bfin_write_EMAC_PTP_CTL(ptpctl);
-
-               /*
-                * clear any existing timestamp
-                */
-               bfin_read_EMAC_PTP_RXSNAPLO();
-               bfin_read_EMAC_PTP_RXSNAPHI();
-
-               bfin_read_EMAC_PTP_TXSNAPLO();
-               bfin_read_EMAC_PTP_TXSNAPHI();
-
-               /*
-                * Set registers so that rollover occurs soon to test this.
-                */
-               bfin_write_EMAC_PTP_TIMELO(0x00000000);
-               bfin_write_EMAC_PTP_TIMEHI(0xFF800000);
-
-               SSYNC();
-
-               lp->compare.last_update = 0;
-               timecounter_init(&lp->clock,
-                               &lp->cycles,
-                               ktime_to_ns(ktime_get_real()));
-               timecompare_update(&lp->compare, 0);
-       }
-
-       lp->stamp_cfg = config;
-       return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
-               -EFAULT : 0;
-}
-
-static void bfin_dump_hwtamp(char *s, ktime_t *hw, ktime_t *ts, struct timecompare *cmp)
-{
-       ktime_t sys = ktime_get_real();
-
-       pr_debug("%s %s hardware:%d,%d transform system:%d,%d system:%d,%d, cmp:%lld, %lld\n",
-                       __func__, s, hw->tv.sec, hw->tv.nsec, ts->tv.sec, ts->tv.nsec, sys.tv.sec,
-                       sys.tv.nsec, cmp->offset, cmp->skew);
-}
-
-static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
-{
-       struct bfin_mac_local *lp = netdev_priv(netdev);
-
-       if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
-               int timeout_cnt = MAX_TIMEOUT_CNT;
-
-               /* When doing time stamping, keep the connection to the socket
-                * a while longer
-                */
-               skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
-
-               /*
-                * The timestamping is done at the EMAC module's MII/RMII interface
-                * when the module sees the Start of Frame of an event message packet. This
-                * interface is the closest possible place to the physical Ethernet transmission
-                * medium, providing the best timing accuracy.
-                */
-               while ((!(bfin_read_EMAC_PTP_ISTAT() & TXTL)) && (--timeout_cnt))
-                       udelay(1);
-               if (timeout_cnt == 0)
-                       netdev_err(netdev, "timestamp the TX packet failed\n");
-               else {
-                       struct skb_shared_hwtstamps shhwtstamps;
-                       u64 ns;
-                       u64 regval;
-
-                       regval = bfin_read_EMAC_PTP_TXSNAPLO();
-                       regval |= (u64)bfin_read_EMAC_PTP_TXSNAPHI() << 32;
-                       memset(&shhwtstamps, 0, sizeof(shhwtstamps));
-                       ns = timecounter_cyc2time(&lp->clock,
-                                       regval);
-                       timecompare_update(&lp->compare, ns);
-                       shhwtstamps.hwtstamp = ns_to_ktime(ns);
-                       shhwtstamps.syststamp =
-                               timecompare_transform(&lp->compare, ns);
-                       skb_tstamp_tx(skb, &shhwtstamps);
-
-                       bfin_dump_hwtamp("TX", &shhwtstamps.hwtstamp, &shhwtstamps.syststamp, &lp->compare);
-               }
-       }
-}
-
-static void bfin_rx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
-{
-       struct bfin_mac_local *lp = netdev_priv(netdev);
-       u32 valid;
-       u64 regval, ns;
-       struct skb_shared_hwtstamps *shhwtstamps;
-
-       if (bfin_mac_hwtstamp_is_none(lp->stamp_cfg.rx_filter))
-               return;
-
-       valid = bfin_read_EMAC_PTP_ISTAT() & RXEL;
-       if (!valid)
-               return;
-
-       shhwtstamps = skb_hwtstamps(skb);
-
-       regval = bfin_read_EMAC_PTP_RXSNAPLO();
-       regval |= (u64)bfin_read_EMAC_PTP_RXSNAPHI() << 32;
-       ns = timecounter_cyc2time(&lp->clock, regval);
-       timecompare_update(&lp->compare, ns);
-       memset(shhwtstamps, 0, sizeof(*shhwtstamps));
-       shhwtstamps->hwtstamp = ns_to_ktime(ns);
-       shhwtstamps->syststamp = timecompare_transform(&lp->compare, ns);
-
-       bfin_dump_hwtamp("RX", &shhwtstamps->hwtstamp, &shhwtstamps->syststamp, &lp->compare);
-}
-
-/*
- * bfin_read_clock - read raw cycle counter (to be used by time counter)
- */
-static cycle_t bfin_read_clock(const struct cyclecounter *tc)
-{
-       u64 stamp;
-
-       stamp =  bfin_read_EMAC_PTP_TIMELO();
-       stamp |= (u64)bfin_read_EMAC_PTP_TIMEHI() << 32ULL;
-
-       return stamp;
-}
-
-#define PTP_CLK 25000000
-
-static void bfin_mac_hwtstamp_init(struct net_device *netdev)
-{
-       struct bfin_mac_local *lp = netdev_priv(netdev);
-       u64 append;
-
-       /* Initialize hardware timer */
-       append = PTP_CLK * (1ULL << 32);
-       do_div(append, get_sclk());
-       bfin_write_EMAC_PTP_ADDEND((u32)append);
-
-       memset(&lp->cycles, 0, sizeof(lp->cycles));
-       lp->cycles.read = bfin_read_clock;
-       lp->cycles.mask = CLOCKSOURCE_MASK(64);
-       lp->cycles.mult = 1000000000 / PTP_CLK;
-       lp->cycles.shift = 0;
-
-       /* Synchronize our NIC clock against system wall clock */
-       memset(&lp->compare, 0, sizeof(lp->compare));
-       lp->compare.source = &lp->clock;
-       lp->compare.target = ktime_get_real;
-       lp->compare.num_samples = 10;
-
-       /* Initialize hwstamp config */
-       lp->stamp_cfg.rx_filter = HWTSTAMP_FILTER_NONE;
-       lp->stamp_cfg.tx_type = HWTSTAMP_TX_OFF;
-}
-
-#else
-# define bfin_mac_hwtstamp_is_none(cfg) 0
-# define bfin_mac_hwtstamp_init(dev)
-# define bfin_mac_hwtstamp_ioctl(dev, ifr, cmd) (-EOPNOTSUPP)
-# define bfin_rx_hwtstamp(dev, skb)
-# define bfin_tx_hwtstamp(dev, skb)
-#endif
-
-static inline void _tx_reclaim_skb(void)
-{
-       do {
-               tx_list_head->desc_a.config &= ~DMAEN;
-               tx_list_head->status.status_word = 0;
-               if (tx_list_head->skb) {
-                       dev_kfree_skb(tx_list_head->skb);
-                       tx_list_head->skb = NULL;
-               }
-               tx_list_head = tx_list_head->next;
-
-       } while (tx_list_head->status.status_word != 0);
-}
-
-static void tx_reclaim_skb(struct bfin_mac_local *lp)
-{
-       int timeout_cnt = MAX_TIMEOUT_CNT;
-
-       if (tx_list_head->status.status_word != 0)
-               _tx_reclaim_skb();
-
-       if (current_tx_ptr->next == tx_list_head) {
-               while (tx_list_head->status.status_word == 0) {
-                       /* slow down polling to avoid too many queue stop. */
-                       udelay(10);
-                       /* reclaim skb if DMA is not running. */
-                       if (!(bfin_read_DMA2_IRQ_STATUS() & DMA_RUN))
-                               break;
-                       if (timeout_cnt-- < 0)
-                               break;
-               }
-
-               if (timeout_cnt >= 0)
-                       _tx_reclaim_skb();
-               else
-                       netif_stop_queue(lp->ndev);
-       }
-
-       if (current_tx_ptr->next != tx_list_head &&
-               netif_queue_stopped(lp->ndev))
-               netif_wake_queue(lp->ndev);
-
-       if (tx_list_head != current_tx_ptr) {
-               /* shorten the timer interval if tx queue is stopped */
-               if (netif_queue_stopped(lp->ndev))
-                       lp->tx_reclaim_timer.expires =
-                               jiffies + (TX_RECLAIM_JIFFIES >> 4);
-               else
-                       lp->tx_reclaim_timer.expires =
-                               jiffies + TX_RECLAIM_JIFFIES;
-
-               mod_timer(&lp->tx_reclaim_timer,
-                       lp->tx_reclaim_timer.expires);
-       }
-
-       return;
-}
-
-static void tx_reclaim_skb_timeout(unsigned long lp)
-{
-       tx_reclaim_skb((struct bfin_mac_local *)lp);
-}
-
-static int bfin_mac_hard_start_xmit(struct sk_buff *skb,
-                               struct net_device *dev)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-       u16 *data;
-       u32 data_align = (unsigned long)(skb->data) & 0x3;
-
-       current_tx_ptr->skb = skb;
-
-       if (data_align == 0x2) {
-               /* move skb->data to current_tx_ptr payload */
-               data = (u16 *)(skb->data) - 1;
-               *data = (u16)(skb->len);
-               /*
-                * When transmitting an Ethernet packet, the PTP_TSYNC module requires
-                * a DMA_Length_Word field associated with the packet. The lower 12 bits
-                * of this field are the length of the packet payload in bytes and the higher
-                * 4 bits are the timestamping enable field.
-                */
-               if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
-                       *data |= 0x1000;
-
-               current_tx_ptr->desc_a.start_addr = (u32)data;
-               /* this is important! */
-               blackfin_dcache_flush_range((u32)data,
-                               (u32)((u8 *)data + skb->len + 4));
-       } else {
-               *((u16 *)(current_tx_ptr->packet)) = (u16)(skb->len);
-               /* enable timestamping for the sent packet */
-               if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
-                       *((u16 *)(current_tx_ptr->packet)) |= 0x1000;
-               memcpy((u8 *)(current_tx_ptr->packet + 2), skb->data,
-                       skb->len);
-               current_tx_ptr->desc_a.start_addr =
-                       (u32)current_tx_ptr->packet;
-               blackfin_dcache_flush_range(
-                       (u32)current_tx_ptr->packet,
-                       (u32)(current_tx_ptr->packet + skb->len + 2));
-       }
-
-       /* make sure the internal data buffers in the core are drained
-        * so that the DMA descriptors are completely written when the
-        * DMA engine goes to fetch them below
-        */
-       SSYNC();
-
-       /* always clear status buffer before start tx dma */
-       current_tx_ptr->status.status_word = 0;
-
-       /* enable this packet's dma */
-       current_tx_ptr->desc_a.config |= DMAEN;
-
-       /* tx dma is running, just return */
-       if (bfin_read_DMA2_IRQ_STATUS() & DMA_RUN)
-               goto out;
-
-       /* tx dma is not running */
-       bfin_write_DMA2_NEXT_DESC_PTR(&(current_tx_ptr->desc_a));
-       /* dma enabled, read from memory, size is 6 */
-       bfin_write_DMA2_CONFIG(current_tx_ptr->desc_a.config);
-       /* Turn on the EMAC tx */
-       bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE);
-
-out:
-       bfin_tx_hwtstamp(dev, skb);
-
-       current_tx_ptr = current_tx_ptr->next;
-       dev->stats.tx_packets++;
-       dev->stats.tx_bytes += (skb->len);
-
-       tx_reclaim_skb(lp);
-
-       return NETDEV_TX_OK;
-}
-
-#define IP_HEADER_OFF  0
-#define RX_ERROR_MASK (RX_LONG | RX_ALIGN | RX_CRC | RX_LEN | \
-       RX_FRAG | RX_ADDR | RX_DMAO | RX_PHY | RX_LATE | RX_RANGE)
-
-static void bfin_mac_rx(struct net_device *dev)
-{
-       struct sk_buff *skb, *new_skb;
-       unsigned short len;
-       struct bfin_mac_local *lp __maybe_unused = netdev_priv(dev);
-#if defined(BFIN_MAC_CSUM_OFFLOAD)
-       unsigned int i;
-       unsigned char fcs[ETH_FCS_LEN + 1];
-#endif
-
-       /* check if frame status word reports an error condition
-        * we which case we simply drop the packet
-        */
-       if (current_rx_ptr->status.status_word & RX_ERROR_MASK) {
-               netdev_notice(dev, "rx: receive error - packet dropped\n");
-               dev->stats.rx_dropped++;
-               goto out;
-       }
-
-       /* allocate a new skb for next time receive */
-       skb = current_rx_ptr->skb;
-
-       new_skb = dev_alloc_skb(PKT_BUF_SZ + NET_IP_ALIGN);
-       if (!new_skb) {
-               netdev_notice(dev, "rx: low on mem - packet dropped\n");
-               dev->stats.rx_dropped++;
-               goto out;
-       }
-       /* reserve 2 bytes for RXDWA padding */
-       skb_reserve(new_skb, NET_IP_ALIGN);
-       /* Invidate the data cache of skb->data range when it is write back
-        * cache. It will prevent overwritting the new data from DMA
-        */
-       blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
-                                        (unsigned long)new_skb->end);
-
-       current_rx_ptr->skb = new_skb;
-       current_rx_ptr->desc_a.start_addr = (unsigned long)new_skb->data - 2;
-
-       len = (unsigned short)((current_rx_ptr->status.status_word) & RX_FRLEN);
-       /* Deduce Ethernet FCS length from Ethernet payload length */
-       len -= ETH_FCS_LEN;
-       skb_put(skb, len);
-
-       skb->protocol = eth_type_trans(skb, dev);
-
-       bfin_rx_hwtstamp(dev, skb);
-
-#if defined(BFIN_MAC_CSUM_OFFLOAD)
-       /* Checksum offloading only works for IPv4 packets with the standard IP header
-        * length of 20 bytes, because the blackfin MAC checksum calculation is
-        * based on that assumption. We must NOT use the calculated checksum if our
-        * IP version or header break that assumption.
-        */
-       if (skb->data[IP_HEADER_OFF] == 0x45) {
-               skb->csum = current_rx_ptr->status.ip_payload_csum;
-               /*
-                * Deduce Ethernet FCS from hardware generated IP payload checksum.
-                * IP checksum is based on 16-bit one's complement algorithm.
-                * To deduce a value from checksum is equal to add its inversion.
-                * If the IP payload len is odd, the inversed FCS should also
-                * begin from odd address and leave first byte zero.
-                */
-               if (skb->len % 2) {
-                       fcs[0] = 0;
-                       for (i = 0; i < ETH_FCS_LEN; i++)
-                               fcs[i + 1] = ~skb->data[skb->len + i];
-                       skb->csum = csum_partial(fcs, ETH_FCS_LEN + 1, skb->csum);
-               } else {
-                       for (i = 0; i < ETH_FCS_LEN; i++)
-                               fcs[i] = ~skb->data[skb->len + i];
-                       skb->csum = csum_partial(fcs, ETH_FCS_LEN, skb->csum);
-               }
-               skb->ip_summed = CHECKSUM_COMPLETE;
-       }
-#endif
-
-       netif_rx(skb);
-       dev->stats.rx_packets++;
-       dev->stats.rx_bytes += len;
-out:
-       current_rx_ptr->status.status_word = 0x00000000;
-       current_rx_ptr = current_rx_ptr->next;
-}
-
-/* interrupt routine to handle rx and error signal */
-static irqreturn_t bfin_mac_interrupt(int irq, void *dev_id)
-{
-       struct net_device *dev = dev_id;
-       int number = 0;
-
-get_one_packet:
-       if (current_rx_ptr->status.status_word == 0) {
-               /* no more new packet received */
-               if (number == 0) {
-                       if (current_rx_ptr->next->status.status_word != 0) {
-                               current_rx_ptr = current_rx_ptr->next;
-                               goto real_rx;
-                       }
-               }
-               bfin_write_DMA1_IRQ_STATUS(bfin_read_DMA1_IRQ_STATUS() |
-                                          DMA_DONE | DMA_ERR);
-               return IRQ_HANDLED;
-       }
-
-real_rx:
-       bfin_mac_rx(dev);
-       number++;
-       goto get_one_packet;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void bfin_mac_poll(struct net_device *dev)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-
-       disable_irq(IRQ_MAC_RX);
-       bfin_mac_interrupt(IRQ_MAC_RX, dev);
-       tx_reclaim_skb(lp);
-       enable_irq(IRQ_MAC_RX);
-}
-#endif                         /* CONFIG_NET_POLL_CONTROLLER */
-
-static void bfin_mac_disable(void)
-{
-       unsigned int opmode;
-
-       opmode = bfin_read_EMAC_OPMODE();
-       opmode &= (~RE);
-       opmode &= (~TE);
-       /* Turn off the EMAC */
-       bfin_write_EMAC_OPMODE(opmode);
-}
-
-/*
- * Enable Interrupts, Receive, and Transmit
- */
-static int bfin_mac_enable(struct phy_device *phydev)
-{
-       int ret;
-       u32 opmode;
-
-       pr_debug("%s\n", __func__);
-
-       /* Set RX DMA */
-       bfin_write_DMA1_NEXT_DESC_PTR(&(rx_list_head->desc_a));
-       bfin_write_DMA1_CONFIG(rx_list_head->desc_a.config);
-
-       /* Wait MII done */
-       ret = bfin_mdio_poll();
-       if (ret)
-               return ret;
-
-       /* We enable only RX here */
-       /* ASTP   : Enable Automatic Pad Stripping
-          PR     : Promiscuous Mode for test
-          PSF    : Receive frames with total length less than 64 bytes.
-          FDMODE : Full Duplex Mode
-          LB     : Internal Loopback for test
-          RE     : Receiver Enable */
-       opmode = bfin_read_EMAC_OPMODE();
-       if (opmode & FDMODE)
-               opmode |= PSF;
-       else
-               opmode |= DRO | DC | PSF;
-       opmode |= RE;
-
-       if (phydev->interface == PHY_INTERFACE_MODE_RMII) {
-               opmode |= RMII; /* For Now only 100MBit are supported */
-#if defined(CONFIG_BF537) || defined(CONFIG_BF536)
-               if (__SILICON_REVISION__ < 3) {
-                       /*
-                        * This isn't publicly documented (fun times!), but in
-                        * silicon <=0.2, the RX and TX pins are clocked together.
-                        * So in order to recv, we must enable the transmit side
-                        * as well.  This will cause a spurious TX interrupt too,
-                        * but we can easily consume that.
-                        */
-                       opmode |= TE;
-               }
-#endif
-       }
-
-       /* Turn on the EMAC rx */
-       bfin_write_EMAC_OPMODE(opmode);
-
-       return 0;
-}
-
-/* Our watchdog timed out. Called by the networking layer */
-static void bfin_mac_timeout(struct net_device *dev)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-
-       pr_debug("%s: %s\n", dev->name, __func__);
-
-       bfin_mac_disable();
-
-       del_timer(&lp->tx_reclaim_timer);
-
-       /* reset tx queue and free skb */
-       while (tx_list_head != current_tx_ptr) {
-               tx_list_head->desc_a.config &= ~DMAEN;
-               tx_list_head->status.status_word = 0;
-               if (tx_list_head->skb) {
-                       dev_kfree_skb(tx_list_head->skb);
-                       tx_list_head->skb = NULL;
-               }
-               tx_list_head = tx_list_head->next;
-       }
-
-       if (netif_queue_stopped(lp->ndev))
-               netif_wake_queue(lp->ndev);
-
-       bfin_mac_enable(lp->phydev);
-
-       /* We can accept TX packets again */
-       dev->trans_start = jiffies; /* prevent tx timeout */
-       netif_wake_queue(dev);
-}
-
-static void bfin_mac_multicast_hash(struct net_device *dev)
-{
-       u32 emac_hashhi, emac_hashlo;
-       struct netdev_hw_addr *ha;
-       u32 crc;
-
-       emac_hashhi = emac_hashlo = 0;
-
-       netdev_for_each_mc_addr(ha, dev) {
-               crc = ether_crc(ETH_ALEN, ha->addr);
-               crc >>= 26;
-
-               if (crc & 0x20)
-                       emac_hashhi |= 1 << (crc & 0x1f);
-               else
-                       emac_hashlo |= 1 << (crc & 0x1f);
-       }
-
-       bfin_write_EMAC_HASHHI(emac_hashhi);
-       bfin_write_EMAC_HASHLO(emac_hashlo);
-}
-
-/*
- * This routine will, depending on the values passed to it,
- * either make it accept multicast packets, go into
- * promiscuous mode (for TCPDUMP and cousins) or accept
- * a select set of multicast packets
- */
-static void bfin_mac_set_multicast_list(struct net_device *dev)
-{
-       u32 sysctl;
-
-       if (dev->flags & IFF_PROMISC) {
-               netdev_info(dev, "set promisc mode\n");
-               sysctl = bfin_read_EMAC_OPMODE();
-               sysctl |= PR;
-               bfin_write_EMAC_OPMODE(sysctl);
-       } else if (dev->flags & IFF_ALLMULTI) {
-               /* accept all multicast */
-               sysctl = bfin_read_EMAC_OPMODE();
-               sysctl |= PAM;
-               bfin_write_EMAC_OPMODE(sysctl);
-       } else if (!netdev_mc_empty(dev)) {
-               /* set up multicast hash table */
-               sysctl = bfin_read_EMAC_OPMODE();
-               sysctl |= HM;
-               bfin_write_EMAC_OPMODE(sysctl);
-               bfin_mac_multicast_hash(dev);
-       } else {
-               /* clear promisc or multicast mode */
-               sysctl = bfin_read_EMAC_OPMODE();
-               sysctl &= ~(RAF | PAM);
-               bfin_write_EMAC_OPMODE(sysctl);
-       }
-}
-
-static int bfin_mac_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
-{
-       struct bfin_mac_local *lp = netdev_priv(netdev);
-
-       if (!netif_running(netdev))
-               return -EINVAL;
-
-       switch (cmd) {
-       case SIOCSHWTSTAMP:
-               return bfin_mac_hwtstamp_ioctl(netdev, ifr, cmd);
-       default:
-               if (lp->phydev)
-                       return phy_mii_ioctl(lp->phydev, ifr, cmd);
-               else
-                       return -EOPNOTSUPP;
-       }
-}
-
-/*
- * this puts the device in an inactive state
- */
-static void bfin_mac_shutdown(struct net_device *dev)
-{
-       /* Turn off the EMAC */
-       bfin_write_EMAC_OPMODE(0x00000000);
-       /* Turn off the EMAC RX DMA */
-       bfin_write_DMA1_CONFIG(0x0000);
-       bfin_write_DMA2_CONFIG(0x0000);
-}
-
-/*
- * Open and Initialize the interface
- *
- * Set up everything, reset the card, etc..
- */
-static int bfin_mac_open(struct net_device *dev)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-       int ret;
-       pr_debug("%s: %s\n", dev->name, __func__);
-
-       /*
-        * Check that the address is valid.  If its not, refuse
-        * to bring the device up.  The user must specify an
-        * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
-        */
-       if (!is_valid_ether_addr(dev->dev_addr)) {
-               netdev_warn(dev, "no valid ethernet hw addr\n");
-               return -EINVAL;
-       }
-
-       /* initial rx and tx list */
-       ret = desc_list_init();
-       if (ret)
-               return ret;
-
-       phy_start(lp->phydev);
-       phy_write(lp->phydev, MII_BMCR, BMCR_RESET);
-       setup_system_regs(dev);
-       setup_mac_addr(dev->dev_addr);
-
-       bfin_mac_disable();
-       ret = bfin_mac_enable(lp->phydev);
-       if (ret)
-               return ret;
-       pr_debug("hardware init finished\n");
-
-       netif_start_queue(dev);
-       netif_carrier_on(dev);
-
-       return 0;
-}
-
-/*
- * this makes the board clean up everything that it can
- * and not talk to the outside world.   Caused by
- * an 'ifconfig ethX down'
- */
-static int bfin_mac_close(struct net_device *dev)
-{
-       struct bfin_mac_local *lp = netdev_priv(dev);
-       pr_debug("%s: %s\n", dev->name, __func__);
-
-       netif_stop_queue(dev);
-       netif_carrier_off(dev);
-
-       phy_stop(lp->phydev);
-       phy_write(lp->phydev, MII_BMCR, BMCR_PDOWN);
-
-       /* clear everything */
-       bfin_mac_shutdown(dev);
-
-       /* free the rx/tx buffers */
-       desc_list_free();
-
-       return 0;
-}
-
-static const struct net_device_ops bfin_mac_netdev_ops = {
-       .ndo_open               = bfin_mac_open,
-       .ndo_stop               = bfin_mac_close,
-       .ndo_start_xmit         = bfin_mac_hard_start_xmit,
-       .ndo_set_mac_address    = bfin_mac_set_mac_address,
-       .ndo_tx_timeout         = bfin_mac_timeout,
-       .ndo_set_multicast_list = bfin_mac_set_multicast_list,
-       .ndo_do_ioctl           = bfin_mac_ioctl,
-       .ndo_validate_addr      = eth_validate_addr,
-       .ndo_change_mtu         = eth_change_mtu,
-#ifdef CONFIG_NET_POLL_CONTROLLER
-       .ndo_poll_controller    = bfin_mac_poll,
-#endif
-};
-
-static int __devinit bfin_mac_probe(struct platform_device *pdev)
-{
-       struct net_device *ndev;
-       struct bfin_mac_local *lp;
-       struct platform_device *pd;
-       struct bfin_mii_bus_platform_data *mii_bus_data;
-       int rc;
-
-       ndev = alloc_etherdev(sizeof(struct bfin_mac_local));
-       if (!ndev) {
-               dev_err(&pdev->dev, "Cannot allocate net device!\n");
-               return -ENOMEM;
-       }
-
-       SET_NETDEV_DEV(ndev, &pdev->dev);
-       platform_set_drvdata(pdev, ndev);
-       lp = netdev_priv(ndev);
-       lp->ndev = ndev;
-
-       /* Grab the MAC address in the MAC */
-       *(__le32 *) (&(ndev->dev_addr[0])) = cpu_to_le32(bfin_read_EMAC_ADDRLO());
-       *(__le16 *) (&(ndev->dev_addr[4])) = cpu_to_le16((u16) bfin_read_EMAC_ADDRHI());
-
-       /* probe mac */
-       /*todo: how to proble? which is revision_register */
-       bfin_write_EMAC_ADDRLO(0x12345678);
-       if (bfin_read_EMAC_ADDRLO() != 0x12345678) {
-               dev_err(&pdev->dev, "Cannot detect Blackfin on-chip ethernet MAC controller!\n");
-               rc = -ENODEV;
-               goto out_err_probe_mac;
-       }
-
-
-       /*
-        * Is it valid? (Did bootloader initialize it?)
-        * Grab the MAC from the board somehow
-        * this is done in the arch/blackfin/mach-bfxxx/boards/eth_mac.c
-        */
-       if (!is_valid_ether_addr(ndev->dev_addr))
-               bfin_get_ether_addr(ndev->dev_addr);
-
-       /* If still not valid, get a random one */
-       if (!is_valid_ether_addr(ndev->dev_addr))
-               random_ether_addr(ndev->dev_addr);
-
-       setup_mac_addr(ndev->dev_addr);
-
-       if (!pdev->dev.platform_data) {
-               dev_err(&pdev->dev, "Cannot get platform device bfin_mii_bus!\n");
-               rc = -ENODEV;
-               goto out_err_probe_mac;
-       }
-       pd = pdev->dev.platform_data;
-       lp->mii_bus = platform_get_drvdata(pd);
-       if (!lp->mii_bus) {
-               dev_err(&pdev->dev, "Cannot get mii_bus!\n");
-               rc = -ENODEV;
-               goto out_err_probe_mac;
-       }
-       lp->mii_bus->priv = ndev;
-       mii_bus_data = pd->dev.platform_data;
-
-       rc = mii_probe(ndev, mii_bus_data->phy_mode);
-       if (rc) {
-               dev_err(&pdev->dev, "MII Probe failed!\n");
-               goto out_err_mii_probe;
-       }
-
-       lp->vlan1_mask = ETH_P_8021Q | mii_bus_data->vlan1_mask;
-       lp->vlan2_mask = ETH_P_8021Q | mii_bus_data->vlan2_mask;
-
-       /* Fill in the fields of the device structure with ethernet values. */
-       ether_setup(ndev);
-
-       ndev->netdev_ops = &bfin_mac_netdev_ops;
-       ndev->ethtool_ops = &bfin_mac_ethtool_ops;
-
-       init_timer(&lp->tx_reclaim_timer);
-       lp->tx_reclaim_timer.data = (unsigned long)lp;
-       lp->tx_reclaim_timer.function = tx_reclaim_skb_timeout;
-
-       spin_lock_init(&lp->lock);
-
-       /* now, enable interrupts */
-       /* register irq handler */
-       rc = request_irq(IRQ_MAC_RX, bfin_mac_interrupt,
-                       IRQF_DISABLED, "EMAC_RX", ndev);
-       if (rc) {
-               dev_err(&pdev->dev, "Cannot request Blackfin MAC RX IRQ!\n");
-               rc = -EBUSY;
-               goto out_err_request_irq;
-       }
-
-       rc = register_netdev(ndev);
-       if (rc) {
-               dev_err(&pdev->dev, "Cannot register net device!\n");
-               goto out_err_reg_ndev;
-       }
-
-       bfin_mac_hwtstamp_init(ndev);
-
-       /* now, print out the card info, in a short format.. */
-       netdev_info(ndev, "%s, Version %s\n", DRV_DESC, DRV_VERSION);
-
-       return 0;
-
-out_err_reg_ndev:
-       free_irq(IRQ_MAC_RX, ndev);
-out_err_request_irq:
-out_err_mii_probe:
-       mdiobus_unregister(lp->mii_bus);
-       mdiobus_free(lp->mii_bus);
-out_err_probe_mac:
-       platform_set_drvdata(pdev, NULL);
-       free_netdev(ndev);
-
-       return rc;
-}
-
-static int __devexit bfin_mac_remove(struct platform_device *pdev)
-{
-       struct net_device *ndev = platform_get_drvdata(pdev);
-       struct bfin_mac_local *lp = netdev_priv(ndev);
-
-       platform_set_drvdata(pdev, NULL);
-
-       lp->mii_bus->priv = NULL;
-
-       unregister_netdev(ndev);
-
-       free_irq(IRQ_MAC_RX, ndev);
-
-       free_netdev(ndev);
-
-       return 0;
-}
-
-#ifdef CONFIG_PM
-static int bfin_mac_suspend(struct platform_device *pdev, pm_message_t mesg)
-{
-       struct net_device *net_dev = platform_get_drvdata(pdev);
-       struct bfin_mac_local *lp = netdev_priv(net_dev);
-
-       if (lp->wol) {
-               bfin_write_EMAC_OPMODE((bfin_read_EMAC_OPMODE() & ~TE) | RE);
-               bfin_write_EMAC_WKUP_CTL(MPKE);
-               enable_irq_wake(IRQ_MAC_WAKEDET);
-       } else {
-               if (netif_running(net_dev))
-                       bfin_mac_close(net_dev);
-       }
-
-       return 0;
-}
-
-static int bfin_mac_resume(struct platform_device *pdev)
-{
-       struct net_device *net_dev = platform_get_drvdata(pdev);
-       struct bfin_mac_local *lp = netdev_priv(net_dev);
-
-       if (lp->wol) {
-               bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE);
-               bfin_write_EMAC_WKUP_CTL(0);
-               disable_irq_wake(IRQ_MAC_WAKEDET);
-       } else {
-               if (netif_running(net_dev))
-                       bfin_mac_open(net_dev);
-       }
-
-       return 0;
-}
-#else
-#define bfin_mac_suspend NULL
-#define bfin_mac_resume NULL
-#endif /* CONFIG_PM */
-
-static int __devinit bfin_mii_bus_probe(struct platform_device *pdev)
-{
-       struct mii_bus *miibus;
-       struct bfin_mii_bus_platform_data *mii_bus_pd;
-       const unsigned short *pin_req;
-       int rc, i;
-
-       mii_bus_pd = dev_get_platdata(&pdev->dev);
-       if (!mii_bus_pd) {
-               dev_err(&pdev->dev, "No peripherals in platform data!\n");
-               return -EINVAL;
-       }
-
-       /*
-        * We are setting up a network card,
-        * so set the GPIO pins to Ethernet mode
-        */
-       pin_req = mii_bus_pd->mac_peripherals;
-       rc = peripheral_request_list(pin_req, KBUILD_MODNAME);
-       if (rc) {
-               dev_err(&pdev->dev, "Requesting peripherals failed!\n");
-               return rc;
-       }
-
-       rc = -ENOMEM;
-       miibus = mdiobus_alloc();
-       if (miibus == NULL)
-               goto out_err_alloc;
-       miibus->read = bfin_mdiobus_read;
-       miibus->write = bfin_mdiobus_write;
-       miibus->reset = bfin_mdiobus_reset;
-
-       miibus->parent = &pdev->dev;
-       miibus->name = "bfin_mii_bus";
-       miibus->phy_mask = mii_bus_pd->phy_mask;
-
-       snprintf(miibus->id, MII_BUS_ID_SIZE, "0");
-       miibus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
-       if (!miibus->irq)
-               goto out_err_irq_alloc;
-
-       for (i = rc; i < PHY_MAX_ADDR; ++i)
-               miibus->irq[i] = PHY_POLL;
-
-       rc = clamp(mii_bus_pd->phydev_number, 0, PHY_MAX_ADDR);
-       if (rc != mii_bus_pd->phydev_number)
-               dev_err(&pdev->dev, "Invalid number (%i) of phydevs\n",
-                       mii_bus_pd->phydev_number);
-       for (i = 0; i < rc; ++i) {
-               unsigned short phyaddr = mii_bus_pd->phydev_data[i].addr;
-               if (phyaddr < PHY_MAX_ADDR)
-                       miibus->irq[phyaddr] = mii_bus_pd->phydev_data[i].irq;
-               else
-                       dev_err(&pdev->dev,
-                               "Invalid PHY address %i for phydev %i\n",
-                               phyaddr, i);
-       }
-
-       rc = mdiobus_register(miibus);
-       if (rc) {
-               dev_err(&pdev->dev, "Cannot register MDIO bus!\n");
-               goto out_err_mdiobus_register;
-       }
-
-       platform_set_drvdata(pdev, miibus);
-       return 0;
-
-out_err_mdiobus_register:
-       kfree(miibus->irq);
-out_err_irq_alloc:
-       mdiobus_free(miibus);
-out_err_alloc:
-       peripheral_free_list(pin_req);
-
-       return rc;
-}
-
-static int __devexit bfin_mii_bus_remove(struct platform_device *pdev)
-{
-       struct mii_bus *miibus = platform_get_drvdata(pdev);
-       struct bfin_mii_bus_platform_data *mii_bus_pd =
-               dev_get_platdata(&pdev->dev);
-
-       platform_set_drvdata(pdev, NULL);
-       mdiobus_unregister(miibus);
-       kfree(miibus->irq);
-       mdiobus_free(miibus);
-       peripheral_free_list(mii_bus_pd->mac_peripherals);
-
-       return 0;
-}
-
-static struct platform_driver bfin_mii_bus_driver = {
-       .probe = bfin_mii_bus_probe,
-       .remove = __devexit_p(bfin_mii_bus_remove),
-       .driver = {
-               .name = "bfin_mii_bus",
-               .owner  = THIS_MODULE,
-       },
-};
-
-static struct platform_driver bfin_mac_driver = {
-       .probe = bfin_mac_probe,
-       .remove = __devexit_p(bfin_mac_remove),
-       .resume = bfin_mac_resume,
-       .suspend = bfin_mac_suspend,
-       .driver = {
-               .name = KBUILD_MODNAME,
-               .owner  = THIS_MODULE,
-       },
-};
-
-static int __init bfin_mac_init(void)
-{
-       int ret;
-       ret = platform_driver_register(&bfin_mii_bus_driver);
-       if (!ret)
-               return platform_driver_register(&bfin_mac_driver);
-       return -ENODEV;
-}
-
-module_init(bfin_mac_init);
-
-static void __exit bfin_mac_cleanup(void)
-{
-       platform_driver_unregister(&bfin_mac_driver);
-       platform_driver_unregister(&bfin_mii_bus_driver);
-}
-
-module_exit(bfin_mac_cleanup);
-
diff --git a/drivers/net/bfin_mac.h b/drivers/net/bfin_mac.h
deleted file mode 100644 (file)
index f8559ac..0000000
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * Blackfin On-Chip MAC Driver
- *
- * Copyright 2004-2007 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- *
- * Licensed under the GPL-2 or later.
- */
-#ifndef _BFIN_MAC_H_
-#define _BFIN_MAC_H_
-
-#include <linux/net_tstamp.h>
-#include <linux/clocksource.h>
-#include <linux/timecompare.h>
-#include <linux/timer.h>
-#include <linux/etherdevice.h>
-#include <linux/bfin_mac.h>
-
-/*
- * Disable hardware checksum for bug #5600 if writeback cache is
- * enabled. Otherwize, corrupted RX packet will be sent up stack
- * without error mark.
- */
-#ifndef CONFIG_BFIN_EXTMEM_WRITEBACK
-#define BFIN_MAC_CSUM_OFFLOAD
-#endif
-
-#define TX_RECLAIM_JIFFIES (HZ / 5)
-
-struct dma_descriptor {
-       struct dma_descriptor *next_dma_desc;
-       unsigned long start_addr;
-       unsigned short config;
-       unsigned short x_count;
-};
-
-struct status_area_rx {
-#if defined(BFIN_MAC_CSUM_OFFLOAD)
-       unsigned short ip_hdr_csum;     /* ip header checksum */
-       /* ip payload(udp or tcp or others) checksum */
-       unsigned short ip_payload_csum;
-#endif
-       unsigned long status_word;      /* the frame status word */
-};
-
-struct status_area_tx {
-       unsigned long status_word;      /* the frame status word */
-};
-
-/* use two descriptors for a packet */
-struct net_dma_desc_rx {
-       struct net_dma_desc_rx *next;
-       struct sk_buff *skb;
-       struct dma_descriptor desc_a;
-       struct dma_descriptor desc_b;
-       struct status_area_rx status;
-};
-
-/* use two descriptors for a packet */
-struct net_dma_desc_tx {
-       struct net_dma_desc_tx *next;
-       struct sk_buff *skb;
-       struct dma_descriptor desc_a;
-       struct dma_descriptor desc_b;
-       unsigned char packet[1560];
-       struct status_area_tx status;
-};
-
-struct bfin_mac_local {
-       /*
-        * these are things that the kernel wants me to keep, so users
-        * can find out semi-useless statistics of how well the card is
-        * performing
-        */
-       struct net_device_stats stats;
-
-       spinlock_t lock;
-
-       int wol;                /* Wake On Lan */
-       int irq_wake_requested;
-       struct timer_list tx_reclaim_timer;
-       struct net_device *ndev;
-
-       /* Data for EMAC_VLAN1 regs */
-       u16 vlan1_mask, vlan2_mask;
-
-       /* MII and PHY stuffs */
-       int old_link;          /* used by bf537_adjust_link */
-       int old_speed;
-       int old_duplex;
-
-       struct phy_device *phydev;
-       struct mii_bus *mii_bus;
-
-#if defined(CONFIG_BFIN_MAC_USE_HWSTAMP)
-       struct cyclecounter cycles;
-       struct timecounter clock;
-       struct timecompare compare;
-       struct hwtstamp_config stamp_cfg;
-#endif
-};
-
-extern void bfin_get_ether_addr(char *addr);
-
-#endif
index 6b3b3dc172e72680788c36d023eb0a393f7455e7..e087337f92b5c0294121a7e0a57170f85796632b 100644 (file)
@@ -15,6 +15,7 @@ source "drivers/net/ethernet/3com/Kconfig"
 source "drivers/net/ethernet/amd/Kconfig"
 source "drivers/net/ethernet/apple/Kconfig"
 source "drivers/net/ethernet/atheros/Kconfig"
+source "drivers/net/ethernet/adi/Kconfig"
 source "drivers/net/ethernet/broadcom/Kconfig"
 source "drivers/net/ethernet/brocade/Kconfig"
 source "drivers/net/ethernet/chelsio/Kconfig"
index 2a1cbce02789bd81802c22e243667510bd4d35a8..826db27564af72cfea30691b594ad23456a86c6e 100644 (file)
@@ -7,6 +7,7 @@ obj-$(CONFIG_NET_VENDOR_8390) += 8390/
 obj-$(CONFIG_NET_VENDOR_AMD) += amd/
 obj-$(CONFIG_NET_VENDOR_APPLE) += apple/
 obj-$(CONFIG_NET_VENDOR_ATHEROS) += atheros/
+obj-$(CONFIG_NET_BFIN) += adi/
 obj-$(CONFIG_NET_VENDOR_BROADCOM) += broadcom/
 obj-$(CONFIG_NET_VENDOR_BROCADE) += brocade/
 obj-$(CONFIG_NET_VENDOR_CHELSIO) += chelsio/
diff --git a/drivers/net/ethernet/adi/Kconfig b/drivers/net/ethernet/adi/Kconfig
new file mode 100644 (file)
index 0000000..6de9851
--- /dev/null
@@ -0,0 +1,68 @@
+#
+# Blackfin device configuration
+#
+
+config NET_BFIN
+       bool "Blackfin devices"
+       depends on BF516 || BF518 || BF526 || BF527 || BF536 || BF537
+       ---help---
+         If you have a network (Ethernet) card belonging to this class, say Y.
+         Make sure you know the name of your card. Read the Ethernet-HOWTO,
+         available from <http://www.tldp.org/docs.html#howto>.
+
+         If unsure, say Y.
+
+         Note that the answer to this question doesn't directly affect the
+         kernel: saying N will just cause the configurator to skip all
+         the remaining Blackfin card questions. If you say Y, you will be
+         asked for your specific card in the following questions.
+
+if NET_BFIN
+
+config BFIN_MAC
+       tristate "Blackfin on-chip MAC support"
+       depends on (BF516 || BF518 || BF526 || BF527 || BF536 || BF537)
+       select CRC32
+       select MII
+       select PHYLIB
+       select BFIN_MAC_USE_L1 if DMA_UNCACHED_NONE
+       ---help---
+         This is the driver for Blackfin on-chip mac device. Say Y if you want
+         it compiled into the kernel. This driver is also available as a
+         module ( = code which can be inserted in and removed from the running
+         kernel whenever you want). The module will be called bfin_mac.
+
+config BFIN_MAC_USE_L1
+       bool "Use L1 memory for rx/tx packets"
+       depends on BFIN_MAC && (BF527 || BF537)
+       default y
+       ---help---
+         To get maximum network performance, you should use L1 memory as rx/tx
+         buffers. Say N here if you want to reserve L1 memory for other uses.
+
+config BFIN_TX_DESC_NUM
+       int "Number of transmit buffer packets"
+       depends on BFIN_MAC
+       range 6 10 if BFIN_MAC_USE_L1
+       range 10 100
+       default "10"
+       ---help---
+         Set the number of buffer packets used in driver.
+
+config BFIN_RX_DESC_NUM
+       int "Number of receive buffer packets"
+       depends on BFIN_MAC
+       range 20 100 if BFIN_MAC_USE_L1
+       range 20 800
+       default "20"
+       ---help---
+         Set the number of buffer packets used in driver.
+
+config BFIN_MAC_USE_HWSTAMP
+       bool "Use IEEE 1588 hwstamp"
+       depends on BFIN_MAC && BF518
+       default y
+       ---help---
+         To support the IEEE 1588 Precision Time Protocol (PTP), select y here
+
+endif # NET_BFIN
diff --git a/drivers/net/ethernet/adi/Makefile b/drivers/net/ethernet/adi/Makefile
new file mode 100644 (file)
index 0000000..b1fbe19
--- /dev/null
@@ -0,0 +1,5 @@
+#
+# Makefile for the Blackfin device drivers.
+#
+
+obj-$(CONFIG_BFIN_MAC) += bfin_mac.o
diff --git a/drivers/net/ethernet/adi/bfin_mac.c b/drivers/net/ethernet/adi/bfin_mac.c
new file mode 100644 (file)
index 0000000..6c019e1
--- /dev/null
@@ -0,0 +1,1767 @@
+/*
+ * Blackfin On-Chip MAC Driver
+ *
+ * Copyright 2004-2010 Analog Devices Inc.
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#define DRV_VERSION    "1.1"
+#define DRV_DESC       "Blackfin on-chip Ethernet MAC driver"
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/crc32.h>
+#include <linux/device.h>
+#include <linux/spinlock.h>
+#include <linux/mii.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/skbuff.h>
+#include <linux/platform_device.h>
+
+#include <asm/dma.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/div64.h>
+#include <asm/dpmc.h>
+#include <asm/blackfin.h>
+#include <asm/cacheflush.h>
+#include <asm/portmux.h>
+#include <mach/pll.h>
+
+#include "bfin_mac.h"
+
+MODULE_AUTHOR("Bryan Wu, Luke Yang");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(DRV_DESC);
+MODULE_ALIAS("platform:bfin_mac");
+
+#if defined(CONFIG_BFIN_MAC_USE_L1)
+# define bfin_mac_alloc(dma_handle, size, num)  l1_data_sram_zalloc(size*num)
+# define bfin_mac_free(dma_handle, ptr, num)    l1_data_sram_free(ptr)
+#else
+# define bfin_mac_alloc(dma_handle, size, num) \
+       dma_alloc_coherent(NULL, size*num, dma_handle, GFP_KERNEL)
+# define bfin_mac_free(dma_handle, ptr, num) \
+       dma_free_coherent(NULL, sizeof(*ptr)*num, ptr, dma_handle)
+#endif
+
+#define PKT_BUF_SZ 1580
+
+#define MAX_TIMEOUT_CNT        500
+
+/* pointers to maintain transmit list */
+static struct net_dma_desc_tx *tx_list_head;
+static struct net_dma_desc_tx *tx_list_tail;
+static struct net_dma_desc_rx *rx_list_head;
+static struct net_dma_desc_rx *rx_list_tail;
+static struct net_dma_desc_rx *current_rx_ptr;
+static struct net_dma_desc_tx *current_tx_ptr;
+static struct net_dma_desc_tx *tx_desc;
+static struct net_dma_desc_rx *rx_desc;
+
+static void desc_list_free(void)
+{
+       struct net_dma_desc_rx *r;
+       struct net_dma_desc_tx *t;
+       int i;
+#if !defined(CONFIG_BFIN_MAC_USE_L1)
+       dma_addr_t dma_handle = 0;
+#endif
+
+       if (tx_desc) {
+               t = tx_list_head;
+               for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) {
+                       if (t) {
+                               if (t->skb) {
+                                       dev_kfree_skb(t->skb);
+                                       t->skb = NULL;
+                               }
+                               t = t->next;
+                       }
+               }
+               bfin_mac_free(dma_handle, tx_desc, CONFIG_BFIN_TX_DESC_NUM);
+       }
+
+       if (rx_desc) {
+               r = rx_list_head;
+               for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) {
+                       if (r) {
+                               if (r->skb) {
+                                       dev_kfree_skb(r->skb);
+                                       r->skb = NULL;
+                               }
+                               r = r->next;
+                       }
+               }
+               bfin_mac_free(dma_handle, rx_desc, CONFIG_BFIN_RX_DESC_NUM);
+       }
+}
+
+static int desc_list_init(void)
+{
+       int i;
+       struct sk_buff *new_skb;
+#if !defined(CONFIG_BFIN_MAC_USE_L1)
+       /*
+        * This dma_handle is useless in Blackfin dma_alloc_coherent().
+        * The real dma handler is the return value of dma_alloc_coherent().
+        */
+       dma_addr_t dma_handle;
+#endif
+
+       tx_desc = bfin_mac_alloc(&dma_handle,
+                               sizeof(struct net_dma_desc_tx),
+                               CONFIG_BFIN_TX_DESC_NUM);
+       if (tx_desc == NULL)
+               goto init_error;
+
+       rx_desc = bfin_mac_alloc(&dma_handle,
+                               sizeof(struct net_dma_desc_rx),
+                               CONFIG_BFIN_RX_DESC_NUM);
+       if (rx_desc == NULL)
+               goto init_error;
+
+       /* init tx_list */
+       tx_list_head = tx_list_tail = tx_desc;
+
+       for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) {
+               struct net_dma_desc_tx *t = tx_desc + i;
+               struct dma_descriptor *a = &(t->desc_a);
+               struct dma_descriptor *b = &(t->desc_b);
+
+               /*
+                * disable DMA
+                * read from memory WNR = 0
+                * wordsize is 32 bits
+                * 6 half words is desc size
+                * large desc flow
+                */
+               a->config = WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
+               a->start_addr = (unsigned long)t->packet;
+               a->x_count = 0;
+               a->next_dma_desc = b;
+
+               /*
+                * enabled DMA
+                * write to memory WNR = 1
+                * wordsize is 32 bits
+                * disable interrupt
+                * 6 half words is desc size
+                * large desc flow
+                */
+               b->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
+               b->start_addr = (unsigned long)(&(t->status));
+               b->x_count = 0;
+
+               t->skb = NULL;
+               tx_list_tail->desc_b.next_dma_desc = a;
+               tx_list_tail->next = t;
+               tx_list_tail = t;
+       }
+       tx_list_tail->next = tx_list_head;      /* tx_list is a circle */
+       tx_list_tail->desc_b.next_dma_desc = &(tx_list_head->desc_a);
+       current_tx_ptr = tx_list_head;
+
+       /* init rx_list */
+       rx_list_head = rx_list_tail = rx_desc;
+
+       for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) {
+               struct net_dma_desc_rx *r = rx_desc + i;
+               struct dma_descriptor *a = &(r->desc_a);
+               struct dma_descriptor *b = &(r->desc_b);
+
+               /* allocate a new skb for next time receive */
+               new_skb = dev_alloc_skb(PKT_BUF_SZ + NET_IP_ALIGN);
+               if (!new_skb) {
+                       pr_notice("init: low on mem - packet dropped\n");
+                       goto init_error;
+               }
+               skb_reserve(new_skb, NET_IP_ALIGN);
+               /* Invidate the data cache of skb->data range when it is write back
+                * cache. It will prevent overwritting the new data from DMA
+                */
+               blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
+                                        (unsigned long)new_skb->end);
+               r->skb = new_skb;
+
+               /*
+                * enabled DMA
+                * write to memory WNR = 1
+                * wordsize is 32 bits
+                * disable interrupt
+                * 6 half words is desc size
+                * large desc flow
+                */
+               a->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
+               /* since RXDWA is enabled */
+               a->start_addr = (unsigned long)new_skb->data - 2;
+               a->x_count = 0;
+               a->next_dma_desc = b;
+
+               /*
+                * enabled DMA
+                * write to memory WNR = 1
+                * wordsize is 32 bits
+                * enable interrupt
+                * 6 half words is desc size
+                * large desc flow
+                */
+               b->config = DMAEN | WNR | WDSIZE_32 | DI_EN |
+                               NDSIZE_6 | DMAFLOW_LARGE;
+               b->start_addr = (unsigned long)(&(r->status));
+               b->x_count = 0;
+
+               rx_list_tail->desc_b.next_dma_desc = a;
+               rx_list_tail->next = r;
+               rx_list_tail = r;
+       }
+       rx_list_tail->next = rx_list_head;      /* rx_list is a circle */
+       rx_list_tail->desc_b.next_dma_desc = &(rx_list_head->desc_a);
+       current_rx_ptr = rx_list_head;
+
+       return 0;
+
+init_error:
+       desc_list_free();
+       pr_err("kmalloc failed\n");
+       return -ENOMEM;
+}
+
+
+/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
+
+/*
+ * MII operations
+ */
+/* Wait until the previous MDC/MDIO transaction has completed */
+static int bfin_mdio_poll(void)
+{
+       int timeout_cnt = MAX_TIMEOUT_CNT;
+
+       /* poll the STABUSY bit */
+       while ((bfin_read_EMAC_STAADD()) & STABUSY) {
+               udelay(1);
+               if (timeout_cnt-- < 0) {
+                       pr_err("wait MDC/MDIO transaction to complete timeout\n");
+                       return -ETIMEDOUT;
+               }
+       }
+
+       return 0;
+}
+
+/* Read an off-chip register in a PHY through the MDC/MDIO port */
+static int bfin_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum)
+{
+       int ret;
+
+       ret = bfin_mdio_poll();
+       if (ret)
+               return ret;
+
+       /* read mode */
+       bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) |
+                               SET_REGAD((u16) regnum) |
+                               STABUSY);
+
+       ret = bfin_mdio_poll();
+       if (ret)
+               return ret;
+
+       return (int) bfin_read_EMAC_STADAT();
+}
+
+/* Write an off-chip register in a PHY through the MDC/MDIO port */
+static int bfin_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum,
+                             u16 value)
+{
+       int ret;
+
+       ret = bfin_mdio_poll();
+       if (ret)
+               return ret;
+
+       bfin_write_EMAC_STADAT((u32) value);
+
+       /* write mode */
+       bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) |
+                               SET_REGAD((u16) regnum) |
+                               STAOP |
+                               STABUSY);
+
+       return bfin_mdio_poll();
+}
+
+static int bfin_mdiobus_reset(struct mii_bus *bus)
+{
+       return 0;
+}
+
+static void bfin_mac_adjust_link(struct net_device *dev)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+       struct phy_device *phydev = lp->phydev;
+       unsigned long flags;
+       int new_state = 0;
+
+       spin_lock_irqsave(&lp->lock, flags);
+       if (phydev->link) {
+               /* Now we make sure that we can be in full duplex mode.
+                * If not, we operate in half-duplex mode. */
+               if (phydev->duplex != lp->old_duplex) {
+                       u32 opmode = bfin_read_EMAC_OPMODE();
+                       new_state = 1;
+
+                       if (phydev->duplex)
+                               opmode |= FDMODE;
+                       else
+                               opmode &= ~(FDMODE);
+
+                       bfin_write_EMAC_OPMODE(opmode);
+                       lp->old_duplex = phydev->duplex;
+               }
+
+               if (phydev->speed != lp->old_speed) {
+                       if (phydev->interface == PHY_INTERFACE_MODE_RMII) {
+                               u32 opmode = bfin_read_EMAC_OPMODE();
+                               switch (phydev->speed) {
+                               case 10:
+                                       opmode |= RMII_10;
+                                       break;
+                               case 100:
+                                       opmode &= ~RMII_10;
+                                       break;
+                               default:
+                                       netdev_warn(dev,
+                                               "Ack! Speed (%d) is not 10/100!\n",
+                                               phydev->speed);
+                                       break;
+                               }
+                               bfin_write_EMAC_OPMODE(opmode);
+                       }
+
+                       new_state = 1;
+                       lp->old_speed = phydev->speed;
+               }
+
+               if (!lp->old_link) {
+                       new_state = 1;
+                       lp->old_link = 1;
+               }
+       } else if (lp->old_link) {
+               new_state = 1;
+               lp->old_link = 0;
+               lp->old_speed = 0;
+               lp->old_duplex = -1;
+       }
+
+       if (new_state) {
+               u32 opmode = bfin_read_EMAC_OPMODE();
+               phy_print_status(phydev);
+               pr_debug("EMAC_OPMODE = 0x%08x\n", opmode);
+       }
+
+       spin_unlock_irqrestore(&lp->lock, flags);
+}
+
+/* MDC  = 2.5 MHz */
+#define MDC_CLK 2500000
+
+static int mii_probe(struct net_device *dev, int phy_mode)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+       struct phy_device *phydev = NULL;
+       unsigned short sysctl;
+       int i;
+       u32 sclk, mdc_div;
+
+       /* Enable PHY output early */
+       if (!(bfin_read_VR_CTL() & CLKBUFOE))
+               bfin_write_VR_CTL(bfin_read_VR_CTL() | CLKBUFOE);
+
+       sclk = get_sclk();
+       mdc_div = ((sclk / MDC_CLK) / 2) - 1;
+
+       sysctl = bfin_read_EMAC_SYSCTL();
+       sysctl = (sysctl & ~MDCDIV) | SET_MDCDIV(mdc_div);
+       bfin_write_EMAC_SYSCTL(sysctl);
+
+       /* search for connected PHY device */
+       for (i = 0; i < PHY_MAX_ADDR; ++i) {
+               struct phy_device *const tmp_phydev = lp->mii_bus->phy_map[i];
+
+               if (!tmp_phydev)
+                       continue; /* no PHY here... */
+
+               phydev = tmp_phydev;
+               break; /* found it */
+       }
+
+       /* now we are supposed to have a proper phydev, to attach to... */
+       if (!phydev) {
+               netdev_err(dev, "no phy device found\n");
+               return -ENODEV;
+       }
+
+       if (phy_mode != PHY_INTERFACE_MODE_RMII &&
+               phy_mode != PHY_INTERFACE_MODE_MII) {
+               netdev_err(dev, "invalid phy interface mode\n");
+               return -EINVAL;
+       }
+
+       phydev = phy_connect(dev, dev_name(&phydev->dev), &bfin_mac_adjust_link,
+                       0, phy_mode);
+
+       if (IS_ERR(phydev)) {
+               netdev_err(dev, "could not attach PHY\n");
+               return PTR_ERR(phydev);
+       }
+
+       /* mask with MAC supported features */
+       phydev->supported &= (SUPPORTED_10baseT_Half
+                             | SUPPORTED_10baseT_Full
+                             | SUPPORTED_100baseT_Half
+                             | SUPPORTED_100baseT_Full
+                             | SUPPORTED_Autoneg
+                             | SUPPORTED_Pause | SUPPORTED_Asym_Pause
+                             | SUPPORTED_MII
+                             | SUPPORTED_TP);
+
+       phydev->advertising = phydev->supported;
+
+       lp->old_link = 0;
+       lp->old_speed = 0;
+       lp->old_duplex = -1;
+       lp->phydev = phydev;
+
+       pr_info("attached PHY driver [%s] "
+               "(mii_bus:phy_addr=%s, irq=%d, mdc_clk=%dHz(mdc_div=%d)@sclk=%dMHz)\n",
+               phydev->drv->name, dev_name(&phydev->dev), phydev->irq,
+               MDC_CLK, mdc_div, sclk/1000000);
+
+       return 0;
+}
+
+/*
+ * Ethtool support
+ */
+
+/*
+ * interrupt routine for magic packet wakeup
+ */
+static irqreturn_t bfin_mac_wake_interrupt(int irq, void *dev_id)
+{
+       return IRQ_HANDLED;
+}
+
+static int
+bfin_mac_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+
+       if (lp->phydev)
+               return phy_ethtool_gset(lp->phydev, cmd);
+
+       return -EINVAL;
+}
+
+static int
+bfin_mac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+
+       if (!capable(CAP_NET_ADMIN))
+               return -EPERM;
+
+       if (lp->phydev)
+               return phy_ethtool_sset(lp->phydev, cmd);
+
+       return -EINVAL;
+}
+
+static void bfin_mac_ethtool_getdrvinfo(struct net_device *dev,
+                                       struct ethtool_drvinfo *info)
+{
+       strcpy(info->driver, KBUILD_MODNAME);
+       strcpy(info->version, DRV_VERSION);
+       strcpy(info->fw_version, "N/A");
+       strcpy(info->bus_info, dev_name(&dev->dev));
+}
+
+static void bfin_mac_ethtool_getwol(struct net_device *dev,
+       struct ethtool_wolinfo *wolinfo)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+
+       wolinfo->supported = WAKE_MAGIC;
+       wolinfo->wolopts = lp->wol;
+}
+
+static int bfin_mac_ethtool_setwol(struct net_device *dev,
+       struct ethtool_wolinfo *wolinfo)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+       int rc;
+
+       if (wolinfo->wolopts & (WAKE_MAGICSECURE |
+                               WAKE_UCAST |
+                               WAKE_MCAST |
+                               WAKE_BCAST |
+                               WAKE_ARP))
+               return -EOPNOTSUPP;
+
+       lp->wol = wolinfo->wolopts;
+
+       if (lp->wol && !lp->irq_wake_requested) {
+               /* register wake irq handler */
+               rc = request_irq(IRQ_MAC_WAKEDET, bfin_mac_wake_interrupt,
+                                IRQF_DISABLED, "EMAC_WAKE", dev);
+               if (rc)
+                       return rc;
+               lp->irq_wake_requested = true;
+       }
+
+       if (!lp->wol && lp->irq_wake_requested) {
+               free_irq(IRQ_MAC_WAKEDET, dev);
+               lp->irq_wake_requested = false;
+       }
+
+       /* Make sure the PHY driver doesn't suspend */
+       device_init_wakeup(&dev->dev, lp->wol);
+
+       return 0;
+}
+
+static const struct ethtool_ops bfin_mac_ethtool_ops = {
+       .get_settings = bfin_mac_ethtool_getsettings,
+       .set_settings = bfin_mac_ethtool_setsettings,
+       .get_link = ethtool_op_get_link,
+       .get_drvinfo = bfin_mac_ethtool_getdrvinfo,
+       .get_wol = bfin_mac_ethtool_getwol,
+       .set_wol = bfin_mac_ethtool_setwol,
+};
+
+/**************************************************************************/
+static void setup_system_regs(struct net_device *dev)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+       int i;
+       unsigned short sysctl;
+
+       /*
+        * Odd word alignment for Receive Frame DMA word
+        * Configure checksum support and rcve frame word alignment
+        */
+       sysctl = bfin_read_EMAC_SYSCTL();
+       /*
+        * check if interrupt is requested for any PHY,
+        * enable PHY interrupt only if needed
+        */
+       for (i = 0; i < PHY_MAX_ADDR; ++i)
+               if (lp->mii_bus->irq[i] != PHY_POLL)
+                       break;
+       if (i < PHY_MAX_ADDR)
+               sysctl |= PHYIE;
+       sysctl |= RXDWA;
+#if defined(BFIN_MAC_CSUM_OFFLOAD)
+       sysctl |= RXCKS;
+#else
+       sysctl &= ~RXCKS;
+#endif
+       bfin_write_EMAC_SYSCTL(sysctl);
+
+       bfin_write_EMAC_MMC_CTL(RSTC | CROLL);
+
+       /* Set vlan regs to let 1522 bytes long packets pass through */
+       bfin_write_EMAC_VLAN1(lp->vlan1_mask);
+       bfin_write_EMAC_VLAN2(lp->vlan2_mask);
+
+       /* Initialize the TX DMA channel registers */
+       bfin_write_DMA2_X_COUNT(0);
+       bfin_write_DMA2_X_MODIFY(4);
+       bfin_write_DMA2_Y_COUNT(0);
+       bfin_write_DMA2_Y_MODIFY(0);
+
+       /* Initialize the RX DMA channel registers */
+       bfin_write_DMA1_X_COUNT(0);
+       bfin_write_DMA1_X_MODIFY(4);
+       bfin_write_DMA1_Y_COUNT(0);
+       bfin_write_DMA1_Y_MODIFY(0);
+}
+
+static void setup_mac_addr(u8 *mac_addr)
+{
+       u32 addr_low = le32_to_cpu(*(__le32 *) & mac_addr[0]);
+       u16 addr_hi = le16_to_cpu(*(__le16 *) & mac_addr[4]);
+
+       /* this depends on a little-endian machine */
+       bfin_write_EMAC_ADDRLO(addr_low);
+       bfin_write_EMAC_ADDRHI(addr_hi);
+}
+
+static int bfin_mac_set_mac_address(struct net_device *dev, void *p)
+{
+       struct sockaddr *addr = p;
+       if (netif_running(dev))
+               return -EBUSY;
+       memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+       setup_mac_addr(dev->dev_addr);
+       return 0;
+}
+
+#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
+#define bfin_mac_hwtstamp_is_none(cfg) ((cfg) == HWTSTAMP_FILTER_NONE)
+
+static int bfin_mac_hwtstamp_ioctl(struct net_device *netdev,
+               struct ifreq *ifr, int cmd)
+{
+       struct hwtstamp_config config;
+       struct bfin_mac_local *lp = netdev_priv(netdev);
+       u16 ptpctl;
+       u32 ptpfv1, ptpfv2, ptpfv3, ptpfoff;
+
+       if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
+               return -EFAULT;
+
+       pr_debug("%s config flag:0x%x, tx_type:0x%x, rx_filter:0x%x\n",
+                       __func__, config.flags, config.tx_type, config.rx_filter);
+
+       /* reserved for future extensions */
+       if (config.flags)
+               return -EINVAL;
+
+       if ((config.tx_type != HWTSTAMP_TX_OFF) &&
+                       (config.tx_type != HWTSTAMP_TX_ON))
+               return -ERANGE;
+
+       ptpctl = bfin_read_EMAC_PTP_CTL();
+
+       switch (config.rx_filter) {
+       case HWTSTAMP_FILTER_NONE:
+               /*
+                * Dont allow any timestamping
+                */
+               ptpfv3 = 0xFFFFFFFF;
+               bfin_write_EMAC_PTP_FV3(ptpfv3);
+               break;
+       case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
+       case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+       case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+               /*
+                * Clear the five comparison mask bits (bits[12:8]) in EMAC_PTP_CTL)
+                * to enable all the field matches.
+                */
+               ptpctl &= ~0x1F00;
+               bfin_write_EMAC_PTP_CTL(ptpctl);
+               /*
+                * Keep the default values of the EMAC_PTP_FOFF register.
+                */
+               ptpfoff = 0x4A24170C;
+               bfin_write_EMAC_PTP_FOFF(ptpfoff);
+               /*
+                * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2
+                * registers.
+                */
+               ptpfv1 = 0x11040800;
+               bfin_write_EMAC_PTP_FV1(ptpfv1);
+               ptpfv2 = 0x0140013F;
+               bfin_write_EMAC_PTP_FV2(ptpfv2);
+               /*
+                * The default value (0xFFFC) allows the timestamping of both
+                * received Sync messages and Delay_Req messages.
+                */
+               ptpfv3 = 0xFFFFFFFC;
+               bfin_write_EMAC_PTP_FV3(ptpfv3);
+
+               config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
+               break;
+       case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
+       case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
+       case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
+               /* Clear all five comparison mask bits (bits[12:8]) in the
+                * EMAC_PTP_CTL register to enable all the field matches.
+                */
+               ptpctl &= ~0x1F00;
+               bfin_write_EMAC_PTP_CTL(ptpctl);
+               /*
+                * Keep the default values of the EMAC_PTP_FOFF register, except set
+                * the PTPCOF field to 0x2A.
+                */
+               ptpfoff = 0x2A24170C;
+               bfin_write_EMAC_PTP_FOFF(ptpfoff);
+               /*
+                * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2
+                * registers.
+                */
+               ptpfv1 = 0x11040800;
+               bfin_write_EMAC_PTP_FV1(ptpfv1);
+               ptpfv2 = 0x0140013F;
+               bfin_write_EMAC_PTP_FV2(ptpfv2);
+               /*
+                * To allow the timestamping of Pdelay_Req and Pdelay_Resp, set
+                * the value to 0xFFF0.
+                */
+               ptpfv3 = 0xFFFFFFF0;
+               bfin_write_EMAC_PTP_FV3(ptpfv3);
+
+               config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT;
+               break;
+       case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
+       case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
+       case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
+               /*
+                * Clear bits 8 and 12 of the EMAC_PTP_CTL register to enable only the
+                * EFTM and PTPCM field comparison.
+                */
+               ptpctl &= ~0x1100;
+               bfin_write_EMAC_PTP_CTL(ptpctl);
+               /*
+                * Keep the default values of all the fields of the EMAC_PTP_FOFF
+                * register, except set the PTPCOF field to 0x0E.
+                */
+               ptpfoff = 0x0E24170C;
+               bfin_write_EMAC_PTP_FOFF(ptpfoff);
+               /*
+                * Program bits [15:0] of the EMAC_PTP_FV1 register to 0x88F7, which
+                * corresponds to PTP messages on the MAC layer.
+                */
+               ptpfv1 = 0x110488F7;
+               bfin_write_EMAC_PTP_FV1(ptpfv1);
+               ptpfv2 = 0x0140013F;
+               bfin_write_EMAC_PTP_FV2(ptpfv2);
+               /*
+                * To allow the timestamping of Pdelay_Req and Pdelay_Resp
+                * messages, set the value to 0xFFF0.
+                */
+               ptpfv3 = 0xFFFFFFF0;
+               bfin_write_EMAC_PTP_FV3(ptpfv3);
+
+               config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
+               break;
+       default:
+               return -ERANGE;
+       }
+
+       if (config.tx_type == HWTSTAMP_TX_OFF &&
+           bfin_mac_hwtstamp_is_none(config.rx_filter)) {
+               ptpctl &= ~PTP_EN;
+               bfin_write_EMAC_PTP_CTL(ptpctl);
+
+               SSYNC();
+       } else {
+               ptpctl |= PTP_EN;
+               bfin_write_EMAC_PTP_CTL(ptpctl);
+
+               /*
+                * clear any existing timestamp
+                */
+               bfin_read_EMAC_PTP_RXSNAPLO();
+               bfin_read_EMAC_PTP_RXSNAPHI();
+
+               bfin_read_EMAC_PTP_TXSNAPLO();
+               bfin_read_EMAC_PTP_TXSNAPHI();
+
+               /*
+                * Set registers so that rollover occurs soon to test this.
+                */
+               bfin_write_EMAC_PTP_TIMELO(0x00000000);
+               bfin_write_EMAC_PTP_TIMEHI(0xFF800000);
+
+               SSYNC();
+
+               lp->compare.last_update = 0;
+               timecounter_init(&lp->clock,
+                               &lp->cycles,
+                               ktime_to_ns(ktime_get_real()));
+               timecompare_update(&lp->compare, 0);
+       }
+
+       lp->stamp_cfg = config;
+       return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
+               -EFAULT : 0;
+}
+
+static void bfin_dump_hwtamp(char *s, ktime_t *hw, ktime_t *ts, struct timecompare *cmp)
+{
+       ktime_t sys = ktime_get_real();
+
+       pr_debug("%s %s hardware:%d,%d transform system:%d,%d system:%d,%d, cmp:%lld, %lld\n",
+                       __func__, s, hw->tv.sec, hw->tv.nsec, ts->tv.sec, ts->tv.nsec, sys.tv.sec,
+                       sys.tv.nsec, cmp->offset, cmp->skew);
+}
+
+static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
+{
+       struct bfin_mac_local *lp = netdev_priv(netdev);
+
+       if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
+               int timeout_cnt = MAX_TIMEOUT_CNT;
+
+               /* When doing time stamping, keep the connection to the socket
+                * a while longer
+                */
+               skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+
+               /*
+                * The timestamping is done at the EMAC module's MII/RMII interface
+                * when the module sees the Start of Frame of an event message packet. This
+                * interface is the closest possible place to the physical Ethernet transmission
+                * medium, providing the best timing accuracy.
+                */
+               while ((!(bfin_read_EMAC_PTP_ISTAT() & TXTL)) && (--timeout_cnt))
+                       udelay(1);
+               if (timeout_cnt == 0)
+                       netdev_err(netdev, "timestamp the TX packet failed\n");
+               else {
+                       struct skb_shared_hwtstamps shhwtstamps;
+                       u64 ns;
+                       u64 regval;
+
+                       regval = bfin_read_EMAC_PTP_TXSNAPLO();
+                       regval |= (u64)bfin_read_EMAC_PTP_TXSNAPHI() << 32;
+                       memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+                       ns = timecounter_cyc2time(&lp->clock,
+                                       regval);
+                       timecompare_update(&lp->compare, ns);
+                       shhwtstamps.hwtstamp = ns_to_ktime(ns);
+                       shhwtstamps.syststamp =
+                               timecompare_transform(&lp->compare, ns);
+                       skb_tstamp_tx(skb, &shhwtstamps);
+
+                       bfin_dump_hwtamp("TX", &shhwtstamps.hwtstamp, &shhwtstamps.syststamp, &lp->compare);
+               }
+       }
+}
+
+static void bfin_rx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
+{
+       struct bfin_mac_local *lp = netdev_priv(netdev);
+       u32 valid;
+       u64 regval, ns;
+       struct skb_shared_hwtstamps *shhwtstamps;
+
+       if (bfin_mac_hwtstamp_is_none(lp->stamp_cfg.rx_filter))
+               return;
+
+       valid = bfin_read_EMAC_PTP_ISTAT() & RXEL;
+       if (!valid)
+               return;
+
+       shhwtstamps = skb_hwtstamps(skb);
+
+       regval = bfin_read_EMAC_PTP_RXSNAPLO();
+       regval |= (u64)bfin_read_EMAC_PTP_RXSNAPHI() << 32;
+       ns = timecounter_cyc2time(&lp->clock, regval);
+       timecompare_update(&lp->compare, ns);
+       memset(shhwtstamps, 0, sizeof(*shhwtstamps));
+       shhwtstamps->hwtstamp = ns_to_ktime(ns);
+       shhwtstamps->syststamp = timecompare_transform(&lp->compare, ns);
+
+       bfin_dump_hwtamp("RX", &shhwtstamps->hwtstamp, &shhwtstamps->syststamp, &lp->compare);
+}
+
+/*
+ * bfin_read_clock - read raw cycle counter (to be used by time counter)
+ */
+static cycle_t bfin_read_clock(const struct cyclecounter *tc)
+{
+       u64 stamp;
+
+       stamp =  bfin_read_EMAC_PTP_TIMELO();
+       stamp |= (u64)bfin_read_EMAC_PTP_TIMEHI() << 32ULL;
+
+       return stamp;
+}
+
+#define PTP_CLK 25000000
+
+static void bfin_mac_hwtstamp_init(struct net_device *netdev)
+{
+       struct bfin_mac_local *lp = netdev_priv(netdev);
+       u64 append;
+
+       /* Initialize hardware timer */
+       append = PTP_CLK * (1ULL << 32);
+       do_div(append, get_sclk());
+       bfin_write_EMAC_PTP_ADDEND((u32)append);
+
+       memset(&lp->cycles, 0, sizeof(lp->cycles));
+       lp->cycles.read = bfin_read_clock;
+       lp->cycles.mask = CLOCKSOURCE_MASK(64);
+       lp->cycles.mult = 1000000000 / PTP_CLK;
+       lp->cycles.shift = 0;
+
+       /* Synchronize our NIC clock against system wall clock */
+       memset(&lp->compare, 0, sizeof(lp->compare));
+       lp->compare.source = &lp->clock;
+       lp->compare.target = ktime_get_real;
+       lp->compare.num_samples = 10;
+
+       /* Initialize hwstamp config */
+       lp->stamp_cfg.rx_filter = HWTSTAMP_FILTER_NONE;
+       lp->stamp_cfg.tx_type = HWTSTAMP_TX_OFF;
+}
+
+#else
+# define bfin_mac_hwtstamp_is_none(cfg) 0
+# define bfin_mac_hwtstamp_init(dev)
+# define bfin_mac_hwtstamp_ioctl(dev, ifr, cmd) (-EOPNOTSUPP)
+# define bfin_rx_hwtstamp(dev, skb)
+# define bfin_tx_hwtstamp(dev, skb)
+#endif
+
+static inline void _tx_reclaim_skb(void)
+{
+       do {
+               tx_list_head->desc_a.config &= ~DMAEN;
+               tx_list_head->status.status_word = 0;
+               if (tx_list_head->skb) {
+                       dev_kfree_skb(tx_list_head->skb);
+                       tx_list_head->skb = NULL;
+               }
+               tx_list_head = tx_list_head->next;
+
+       } while (tx_list_head->status.status_word != 0);
+}
+
+static void tx_reclaim_skb(struct bfin_mac_local *lp)
+{
+       int timeout_cnt = MAX_TIMEOUT_CNT;
+
+       if (tx_list_head->status.status_word != 0)
+               _tx_reclaim_skb();
+
+       if (current_tx_ptr->next == tx_list_head) {
+               while (tx_list_head->status.status_word == 0) {
+                       /* slow down polling to avoid too many queue stop. */
+                       udelay(10);
+                       /* reclaim skb if DMA is not running. */
+                       if (!(bfin_read_DMA2_IRQ_STATUS() & DMA_RUN))
+                               break;
+                       if (timeout_cnt-- < 0)
+                               break;
+               }
+
+               if (timeout_cnt >= 0)
+                       _tx_reclaim_skb();
+               else
+                       netif_stop_queue(lp->ndev);
+       }
+
+       if (current_tx_ptr->next != tx_list_head &&
+               netif_queue_stopped(lp->ndev))
+               netif_wake_queue(lp->ndev);
+
+       if (tx_list_head != current_tx_ptr) {
+               /* shorten the timer interval if tx queue is stopped */
+               if (netif_queue_stopped(lp->ndev))
+                       lp->tx_reclaim_timer.expires =
+                               jiffies + (TX_RECLAIM_JIFFIES >> 4);
+               else
+                       lp->tx_reclaim_timer.expires =
+                               jiffies + TX_RECLAIM_JIFFIES;
+
+               mod_timer(&lp->tx_reclaim_timer,
+                       lp->tx_reclaim_timer.expires);
+       }
+
+       return;
+}
+
+static void tx_reclaim_skb_timeout(unsigned long lp)
+{
+       tx_reclaim_skb((struct bfin_mac_local *)lp);
+}
+
+static int bfin_mac_hard_start_xmit(struct sk_buff *skb,
+                               struct net_device *dev)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+       u16 *data;
+       u32 data_align = (unsigned long)(skb->data) & 0x3;
+
+       current_tx_ptr->skb = skb;
+
+       if (data_align == 0x2) {
+               /* move skb->data to current_tx_ptr payload */
+               data = (u16 *)(skb->data) - 1;
+               *data = (u16)(skb->len);
+               /*
+                * When transmitting an Ethernet packet, the PTP_TSYNC module requires
+                * a DMA_Length_Word field associated with the packet. The lower 12 bits
+                * of this field are the length of the packet payload in bytes and the higher
+                * 4 bits are the timestamping enable field.
+                */
+               if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
+                       *data |= 0x1000;
+
+               current_tx_ptr->desc_a.start_addr = (u32)data;
+               /* this is important! */
+               blackfin_dcache_flush_range((u32)data,
+                               (u32)((u8 *)data + skb->len + 4));
+       } else {
+               *((u16 *)(current_tx_ptr->packet)) = (u16)(skb->len);
+               /* enable timestamping for the sent packet */
+               if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
+                       *((u16 *)(current_tx_ptr->packet)) |= 0x1000;
+               memcpy((u8 *)(current_tx_ptr->packet + 2), skb->data,
+                       skb->len);
+               current_tx_ptr->desc_a.start_addr =
+                       (u32)current_tx_ptr->packet;
+               blackfin_dcache_flush_range(
+                       (u32)current_tx_ptr->packet,
+                       (u32)(current_tx_ptr->packet + skb->len + 2));
+       }
+
+       /* make sure the internal data buffers in the core are drained
+        * so that the DMA descriptors are completely written when the
+        * DMA engine goes to fetch them below
+        */
+       SSYNC();
+
+       /* always clear status buffer before start tx dma */
+       current_tx_ptr->status.status_word = 0;
+
+       /* enable this packet's dma */
+       current_tx_ptr->desc_a.config |= DMAEN;
+
+       /* tx dma is running, just return */
+       if (bfin_read_DMA2_IRQ_STATUS() & DMA_RUN)
+               goto out;
+
+       /* tx dma is not running */
+       bfin_write_DMA2_NEXT_DESC_PTR(&(current_tx_ptr->desc_a));
+       /* dma enabled, read from memory, size is 6 */
+       bfin_write_DMA2_CONFIG(current_tx_ptr->desc_a.config);
+       /* Turn on the EMAC tx */
+       bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE);
+
+out:
+       bfin_tx_hwtstamp(dev, skb);
+
+       current_tx_ptr = current_tx_ptr->next;
+       dev->stats.tx_packets++;
+       dev->stats.tx_bytes += (skb->len);
+
+       tx_reclaim_skb(lp);
+
+       return NETDEV_TX_OK;
+}
+
+#define IP_HEADER_OFF  0
+#define RX_ERROR_MASK (RX_LONG | RX_ALIGN | RX_CRC | RX_LEN | \
+       RX_FRAG | RX_ADDR | RX_DMAO | RX_PHY | RX_LATE | RX_RANGE)
+
+static void bfin_mac_rx(struct net_device *dev)
+{
+       struct sk_buff *skb, *new_skb;
+       unsigned short len;
+       struct bfin_mac_local *lp __maybe_unused = netdev_priv(dev);
+#if defined(BFIN_MAC_CSUM_OFFLOAD)
+       unsigned int i;
+       unsigned char fcs[ETH_FCS_LEN + 1];
+#endif
+
+       /* check if frame status word reports an error condition
+        * we which case we simply drop the packet
+        */
+       if (current_rx_ptr->status.status_word & RX_ERROR_MASK) {
+               netdev_notice(dev, "rx: receive error - packet dropped\n");
+               dev->stats.rx_dropped++;
+               goto out;
+       }
+
+       /* allocate a new skb for next time receive */
+       skb = current_rx_ptr->skb;
+
+       new_skb = dev_alloc_skb(PKT_BUF_SZ + NET_IP_ALIGN);
+       if (!new_skb) {
+               netdev_notice(dev, "rx: low on mem - packet dropped\n");
+               dev->stats.rx_dropped++;
+               goto out;
+       }
+       /* reserve 2 bytes for RXDWA padding */
+       skb_reserve(new_skb, NET_IP_ALIGN);
+       /* Invidate the data cache of skb->data range when it is write back
+        * cache. It will prevent overwritting the new data from DMA
+        */
+       blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
+                                        (unsigned long)new_skb->end);
+
+       current_rx_ptr->skb = new_skb;
+       current_rx_ptr->desc_a.start_addr = (unsigned long)new_skb->data - 2;
+
+       len = (unsigned short)((current_rx_ptr->status.status_word) & RX_FRLEN);
+       /* Deduce Ethernet FCS length from Ethernet payload length */
+       len -= ETH_FCS_LEN;
+       skb_put(skb, len);
+
+       skb->protocol = eth_type_trans(skb, dev);
+
+       bfin_rx_hwtstamp(dev, skb);
+
+#if defined(BFIN_MAC_CSUM_OFFLOAD)
+       /* Checksum offloading only works for IPv4 packets with the standard IP header
+        * length of 20 bytes, because the blackfin MAC checksum calculation is
+        * based on that assumption. We must NOT use the calculated checksum if our
+        * IP version or header break that assumption.
+        */
+       if (skb->data[IP_HEADER_OFF] == 0x45) {
+               skb->csum = current_rx_ptr->status.ip_payload_csum;
+               /*
+                * Deduce Ethernet FCS from hardware generated IP payload checksum.
+                * IP checksum is based on 16-bit one's complement algorithm.
+                * To deduce a value from checksum is equal to add its inversion.
+                * If the IP payload len is odd, the inversed FCS should also
+                * begin from odd address and leave first byte zero.
+                */
+               if (skb->len % 2) {
+                       fcs[0] = 0;
+                       for (i = 0; i < ETH_FCS_LEN; i++)
+                               fcs[i + 1] = ~skb->data[skb->len + i];
+                       skb->csum = csum_partial(fcs, ETH_FCS_LEN + 1, skb->csum);
+               } else {
+                       for (i = 0; i < ETH_FCS_LEN; i++)
+                               fcs[i] = ~skb->data[skb->len + i];
+                       skb->csum = csum_partial(fcs, ETH_FCS_LEN, skb->csum);
+               }
+               skb->ip_summed = CHECKSUM_COMPLETE;
+       }
+#endif
+
+       netif_rx(skb);
+       dev->stats.rx_packets++;
+       dev->stats.rx_bytes += len;
+out:
+       current_rx_ptr->status.status_word = 0x00000000;
+       current_rx_ptr = current_rx_ptr->next;
+}
+
+/* interrupt routine to handle rx and error signal */
+static irqreturn_t bfin_mac_interrupt(int irq, void *dev_id)
+{
+       struct net_device *dev = dev_id;
+       int number = 0;
+
+get_one_packet:
+       if (current_rx_ptr->status.status_word == 0) {
+               /* no more new packet received */
+               if (number == 0) {
+                       if (current_rx_ptr->next->status.status_word != 0) {
+                               current_rx_ptr = current_rx_ptr->next;
+                               goto real_rx;
+                       }
+               }
+               bfin_write_DMA1_IRQ_STATUS(bfin_read_DMA1_IRQ_STATUS() |
+                                          DMA_DONE | DMA_ERR);
+               return IRQ_HANDLED;
+       }
+
+real_rx:
+       bfin_mac_rx(dev);
+       number++;
+       goto get_one_packet;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void bfin_mac_poll(struct net_device *dev)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+
+       disable_irq(IRQ_MAC_RX);
+       bfin_mac_interrupt(IRQ_MAC_RX, dev);
+       tx_reclaim_skb(lp);
+       enable_irq(IRQ_MAC_RX);
+}
+#endif                         /* CONFIG_NET_POLL_CONTROLLER */
+
+static void bfin_mac_disable(void)
+{
+       unsigned int opmode;
+
+       opmode = bfin_read_EMAC_OPMODE();
+       opmode &= (~RE);
+       opmode &= (~TE);
+       /* Turn off the EMAC */
+       bfin_write_EMAC_OPMODE(opmode);
+}
+
+/*
+ * Enable Interrupts, Receive, and Transmit
+ */
+static int bfin_mac_enable(struct phy_device *phydev)
+{
+       int ret;
+       u32 opmode;
+
+       pr_debug("%s\n", __func__);
+
+       /* Set RX DMA */
+       bfin_write_DMA1_NEXT_DESC_PTR(&(rx_list_head->desc_a));
+       bfin_write_DMA1_CONFIG(rx_list_head->desc_a.config);
+
+       /* Wait MII done */
+       ret = bfin_mdio_poll();
+       if (ret)
+               return ret;
+
+       /* We enable only RX here */
+       /* ASTP   : Enable Automatic Pad Stripping
+          PR     : Promiscuous Mode for test
+          PSF    : Receive frames with total length less than 64 bytes.
+          FDMODE : Full Duplex Mode
+          LB     : Internal Loopback for test
+          RE     : Receiver Enable */
+       opmode = bfin_read_EMAC_OPMODE();
+       if (opmode & FDMODE)
+               opmode |= PSF;
+       else
+               opmode |= DRO | DC | PSF;
+       opmode |= RE;
+
+       if (phydev->interface == PHY_INTERFACE_MODE_RMII) {
+               opmode |= RMII; /* For Now only 100MBit are supported */
+#if defined(CONFIG_BF537) || defined(CONFIG_BF536)
+               if (__SILICON_REVISION__ < 3) {
+                       /*
+                        * This isn't publicly documented (fun times!), but in
+                        * silicon <=0.2, the RX and TX pins are clocked together.
+                        * So in order to recv, we must enable the transmit side
+                        * as well.  This will cause a spurious TX interrupt too,
+                        * but we can easily consume that.
+                        */
+                       opmode |= TE;
+               }
+#endif
+       }
+
+       /* Turn on the EMAC rx */
+       bfin_write_EMAC_OPMODE(opmode);
+
+       return 0;
+}
+
+/* Our watchdog timed out. Called by the networking layer */
+static void bfin_mac_timeout(struct net_device *dev)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+
+       pr_debug("%s: %s\n", dev->name, __func__);
+
+       bfin_mac_disable();
+
+       del_timer(&lp->tx_reclaim_timer);
+
+       /* reset tx queue and free skb */
+       while (tx_list_head != current_tx_ptr) {
+               tx_list_head->desc_a.config &= ~DMAEN;
+               tx_list_head->status.status_word = 0;
+               if (tx_list_head->skb) {
+                       dev_kfree_skb(tx_list_head->skb);
+                       tx_list_head->skb = NULL;
+               }
+               tx_list_head = tx_list_head->next;
+       }
+
+       if (netif_queue_stopped(lp->ndev))
+               netif_wake_queue(lp->ndev);
+
+       bfin_mac_enable(lp->phydev);
+
+       /* We can accept TX packets again */
+       dev->trans_start = jiffies; /* prevent tx timeout */
+       netif_wake_queue(dev);
+}
+
+static void bfin_mac_multicast_hash(struct net_device *dev)
+{
+       u32 emac_hashhi, emac_hashlo;
+       struct netdev_hw_addr *ha;
+       u32 crc;
+
+       emac_hashhi = emac_hashlo = 0;
+
+       netdev_for_each_mc_addr(ha, dev) {
+               crc = ether_crc(ETH_ALEN, ha->addr);
+               crc >>= 26;
+
+               if (crc & 0x20)
+                       emac_hashhi |= 1 << (crc & 0x1f);
+               else
+                       emac_hashlo |= 1 << (crc & 0x1f);
+       }
+
+       bfin_write_EMAC_HASHHI(emac_hashhi);
+       bfin_write_EMAC_HASHLO(emac_hashlo);
+}
+
+/*
+ * This routine will, depending on the values passed to it,
+ * either make it accept multicast packets, go into
+ * promiscuous mode (for TCPDUMP and cousins) or accept
+ * a select set of multicast packets
+ */
+static void bfin_mac_set_multicast_list(struct net_device *dev)
+{
+       u32 sysctl;
+
+       if (dev->flags & IFF_PROMISC) {
+               netdev_info(dev, "set promisc mode\n");
+               sysctl = bfin_read_EMAC_OPMODE();
+               sysctl |= PR;
+               bfin_write_EMAC_OPMODE(sysctl);
+       } else if (dev->flags & IFF_ALLMULTI) {
+               /* accept all multicast */
+               sysctl = bfin_read_EMAC_OPMODE();
+               sysctl |= PAM;
+               bfin_write_EMAC_OPMODE(sysctl);
+       } else if (!netdev_mc_empty(dev)) {
+               /* set up multicast hash table */
+               sysctl = bfin_read_EMAC_OPMODE();
+               sysctl |= HM;
+               bfin_write_EMAC_OPMODE(sysctl);
+               bfin_mac_multicast_hash(dev);
+       } else {
+               /* clear promisc or multicast mode */
+               sysctl = bfin_read_EMAC_OPMODE();
+               sysctl &= ~(RAF | PAM);
+               bfin_write_EMAC_OPMODE(sysctl);
+       }
+}
+
+static int bfin_mac_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+       struct bfin_mac_local *lp = netdev_priv(netdev);
+
+       if (!netif_running(netdev))
+               return -EINVAL;
+
+       switch (cmd) {
+       case SIOCSHWTSTAMP:
+               return bfin_mac_hwtstamp_ioctl(netdev, ifr, cmd);
+       default:
+               if (lp->phydev)
+                       return phy_mii_ioctl(lp->phydev, ifr, cmd);
+               else
+                       return -EOPNOTSUPP;
+       }
+}
+
+/*
+ * this puts the device in an inactive state
+ */
+static void bfin_mac_shutdown(struct net_device *dev)
+{
+       /* Turn off the EMAC */
+       bfin_write_EMAC_OPMODE(0x00000000);
+       /* Turn off the EMAC RX DMA */
+       bfin_write_DMA1_CONFIG(0x0000);
+       bfin_write_DMA2_CONFIG(0x0000);
+}
+
+/*
+ * Open and Initialize the interface
+ *
+ * Set up everything, reset the card, etc..
+ */
+static int bfin_mac_open(struct net_device *dev)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+       int ret;
+       pr_debug("%s: %s\n", dev->name, __func__);
+
+       /*
+        * Check that the address is valid.  If its not, refuse
+        * to bring the device up.  The user must specify an
+        * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
+        */
+       if (!is_valid_ether_addr(dev->dev_addr)) {
+               netdev_warn(dev, "no valid ethernet hw addr\n");
+               return -EINVAL;
+       }
+
+       /* initial rx and tx list */
+       ret = desc_list_init();
+       if (ret)
+               return ret;
+
+       phy_start(lp->phydev);
+       phy_write(lp->phydev, MII_BMCR, BMCR_RESET);
+       setup_system_regs(dev);
+       setup_mac_addr(dev->dev_addr);
+
+       bfin_mac_disable();
+       ret = bfin_mac_enable(lp->phydev);
+       if (ret)
+               return ret;
+       pr_debug("hardware init finished\n");
+
+       netif_start_queue(dev);
+       netif_carrier_on(dev);
+
+       return 0;
+}
+
+/*
+ * this makes the board clean up everything that it can
+ * and not talk to the outside world.   Caused by
+ * an 'ifconfig ethX down'
+ */
+static int bfin_mac_close(struct net_device *dev)
+{
+       struct bfin_mac_local *lp = netdev_priv(dev);
+       pr_debug("%s: %s\n", dev->name, __func__);
+
+       netif_stop_queue(dev);
+       netif_carrier_off(dev);
+
+       phy_stop(lp->phydev);
+       phy_write(lp->phydev, MII_BMCR, BMCR_PDOWN);
+
+       /* clear everything */
+       bfin_mac_shutdown(dev);
+
+       /* free the rx/tx buffers */
+       desc_list_free();
+
+       return 0;
+}
+
+static const struct net_device_ops bfin_mac_netdev_ops = {
+       .ndo_open               = bfin_mac_open,
+       .ndo_stop               = bfin_mac_close,
+       .ndo_start_xmit         = bfin_mac_hard_start_xmit,
+       .ndo_set_mac_address    = bfin_mac_set_mac_address,
+       .ndo_tx_timeout         = bfin_mac_timeout,
+       .ndo_set_multicast_list = bfin_mac_set_multicast_list,
+       .ndo_do_ioctl           = bfin_mac_ioctl,
+       .ndo_validate_addr      = eth_validate_addr,
+       .ndo_change_mtu         = eth_change_mtu,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+       .ndo_poll_controller    = bfin_mac_poll,
+#endif
+};
+
+static int __devinit bfin_mac_probe(struct platform_device *pdev)
+{
+       struct net_device *ndev;
+       struct bfin_mac_local *lp;
+       struct platform_device *pd;
+       struct bfin_mii_bus_platform_data *mii_bus_data;
+       int rc;
+
+       ndev = alloc_etherdev(sizeof(struct bfin_mac_local));
+       if (!ndev) {
+               dev_err(&pdev->dev, "Cannot allocate net device!\n");
+               return -ENOMEM;
+       }
+
+       SET_NETDEV_DEV(ndev, &pdev->dev);
+       platform_set_drvdata(pdev, ndev);
+       lp = netdev_priv(ndev);
+       lp->ndev = ndev;
+
+       /* Grab the MAC address in the MAC */
+       *(__le32 *) (&(ndev->dev_addr[0])) = cpu_to_le32(bfin_read_EMAC_ADDRLO());
+       *(__le16 *) (&(ndev->dev_addr[4])) = cpu_to_le16((u16) bfin_read_EMAC_ADDRHI());
+
+       /* probe mac */
+       /*todo: how to proble? which is revision_register */
+       bfin_write_EMAC_ADDRLO(0x12345678);
+       if (bfin_read_EMAC_ADDRLO() != 0x12345678) {
+               dev_err(&pdev->dev, "Cannot detect Blackfin on-chip ethernet MAC controller!\n");
+               rc = -ENODEV;
+               goto out_err_probe_mac;
+       }
+
+
+       /*
+        * Is it valid? (Did bootloader initialize it?)
+        * Grab the MAC from the board somehow
+        * this is done in the arch/blackfin/mach-bfxxx/boards/eth_mac.c
+        */
+       if (!is_valid_ether_addr(ndev->dev_addr))
+               bfin_get_ether_addr(ndev->dev_addr);
+
+       /* If still not valid, get a random one */
+       if (!is_valid_ether_addr(ndev->dev_addr))
+               random_ether_addr(ndev->dev_addr);
+
+       setup_mac_addr(ndev->dev_addr);
+
+       if (!pdev->dev.platform_data) {
+               dev_err(&pdev->dev, "Cannot get platform device bfin_mii_bus!\n");
+               rc = -ENODEV;
+               goto out_err_probe_mac;
+       }
+       pd = pdev->dev.platform_data;
+       lp->mii_bus = platform_get_drvdata(pd);
+       if (!lp->mii_bus) {
+               dev_err(&pdev->dev, "Cannot get mii_bus!\n");
+               rc = -ENODEV;
+               goto out_err_probe_mac;
+       }
+       lp->mii_bus->priv = ndev;
+       mii_bus_data = pd->dev.platform_data;
+
+       rc = mii_probe(ndev, mii_bus_data->phy_mode);
+       if (rc) {
+               dev_err(&pdev->dev, "MII Probe failed!\n");
+               goto out_err_mii_probe;
+       }
+
+       lp->vlan1_mask = ETH_P_8021Q | mii_bus_data->vlan1_mask;
+       lp->vlan2_mask = ETH_P_8021Q | mii_bus_data->vlan2_mask;
+
+       /* Fill in the fields of the device structure with ethernet values. */
+       ether_setup(ndev);
+
+       ndev->netdev_ops = &bfin_mac_netdev_ops;
+       ndev->ethtool_ops = &bfin_mac_ethtool_ops;
+
+       init_timer(&lp->tx_reclaim_timer);
+       lp->tx_reclaim_timer.data = (unsigned long)lp;
+       lp->tx_reclaim_timer.function = tx_reclaim_skb_timeout;
+
+       spin_lock_init(&lp->lock);
+
+       /* now, enable interrupts */
+       /* register irq handler */
+       rc = request_irq(IRQ_MAC_RX, bfin_mac_interrupt,
+                       IRQF_DISABLED, "EMAC_RX", ndev);
+       if (rc) {
+               dev_err(&pdev->dev, "Cannot request Blackfin MAC RX IRQ!\n");
+               rc = -EBUSY;
+               goto out_err_request_irq;
+       }
+
+       rc = register_netdev(ndev);
+       if (rc) {
+               dev_err(&pdev->dev, "Cannot register net device!\n");
+               goto out_err_reg_ndev;
+       }
+
+       bfin_mac_hwtstamp_init(ndev);
+
+       /* now, print out the card info, in a short format.. */
+       netdev_info(ndev, "%s, Version %s\n", DRV_DESC, DRV_VERSION);
+
+       return 0;
+
+out_err_reg_ndev:
+       free_irq(IRQ_MAC_RX, ndev);
+out_err_request_irq:
+out_err_mii_probe:
+       mdiobus_unregister(lp->mii_bus);
+       mdiobus_free(lp->mii_bus);
+out_err_probe_mac:
+       platform_set_drvdata(pdev, NULL);
+       free_netdev(ndev);
+
+       return rc;
+}
+
+static int __devexit bfin_mac_remove(struct platform_device *pdev)
+{
+       struct net_device *ndev = platform_get_drvdata(pdev);
+       struct bfin_mac_local *lp = netdev_priv(ndev);
+
+       platform_set_drvdata(pdev, NULL);
+
+       lp->mii_bus->priv = NULL;
+
+       unregister_netdev(ndev);
+
+       free_irq(IRQ_MAC_RX, ndev);
+
+       free_netdev(ndev);
+
+       return 0;
+}
+
+#ifdef CONFIG_PM
+static int bfin_mac_suspend(struct platform_device *pdev, pm_message_t mesg)
+{
+       struct net_device *net_dev = platform_get_drvdata(pdev);
+       struct bfin_mac_local *lp = netdev_priv(net_dev);
+
+       if (lp->wol) {
+               bfin_write_EMAC_OPMODE((bfin_read_EMAC_OPMODE() & ~TE) | RE);
+               bfin_write_EMAC_WKUP_CTL(MPKE);
+               enable_irq_wake(IRQ_MAC_WAKEDET);
+       } else {
+               if (netif_running(net_dev))
+                       bfin_mac_close(net_dev);
+       }
+
+       return 0;
+}
+
+static int bfin_mac_resume(struct platform_device *pdev)
+{
+       struct net_device *net_dev = platform_get_drvdata(pdev);
+       struct bfin_mac_local *lp = netdev_priv(net_dev);
+
+       if (lp->wol) {
+               bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE);
+               bfin_write_EMAC_WKUP_CTL(0);
+               disable_irq_wake(IRQ_MAC_WAKEDET);
+       } else {
+               if (netif_running(net_dev))
+                       bfin_mac_open(net_dev);
+       }
+
+       return 0;
+}
+#else
+#define bfin_mac_suspend NULL
+#define bfin_mac_resume NULL
+#endif /* CONFIG_PM */
+
+static int __devinit bfin_mii_bus_probe(struct platform_device *pdev)
+{
+       struct mii_bus *miibus;
+       struct bfin_mii_bus_platform_data *mii_bus_pd;
+       const unsigned short *pin_req;
+       int rc, i;
+
+       mii_bus_pd = dev_get_platdata(&pdev->dev);
+       if (!mii_bus_pd) {
+               dev_err(&pdev->dev, "No peripherals in platform data!\n");
+               return -EINVAL;
+       }
+
+       /*
+        * We are setting up a network card,
+        * so set the GPIO pins to Ethernet mode
+        */
+       pin_req = mii_bus_pd->mac_peripherals;
+       rc = peripheral_request_list(pin_req, KBUILD_MODNAME);
+       if (rc) {
+               dev_err(&pdev->dev, "Requesting peripherals failed!\n");
+               return rc;
+       }
+
+       rc = -ENOMEM;
+       miibus = mdiobus_alloc();
+       if (miibus == NULL)
+               goto out_err_alloc;
+       miibus->read = bfin_mdiobus_read;
+       miibus->write = bfin_mdiobus_write;
+       miibus->reset = bfin_mdiobus_reset;
+
+       miibus->parent = &pdev->dev;
+       miibus->name = "bfin_mii_bus";
+       miibus->phy_mask = mii_bus_pd->phy_mask;
+
+       snprintf(miibus->id, MII_BUS_ID_SIZE, "0");
+       miibus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
+       if (!miibus->irq)
+               goto out_err_irq_alloc;
+
+       for (i = rc; i < PHY_MAX_ADDR; ++i)
+               miibus->irq[i] = PHY_POLL;
+
+       rc = clamp(mii_bus_pd->phydev_number, 0, PHY_MAX_ADDR);
+       if (rc != mii_bus_pd->phydev_number)
+               dev_err(&pdev->dev, "Invalid number (%i) of phydevs\n",
+                       mii_bus_pd->phydev_number);
+       for (i = 0; i < rc; ++i) {
+               unsigned short phyaddr = mii_bus_pd->phydev_data[i].addr;
+               if (phyaddr < PHY_MAX_ADDR)
+                       miibus->irq[phyaddr] = mii_bus_pd->phydev_data[i].irq;
+               else
+                       dev_err(&pdev->dev,
+                               "Invalid PHY address %i for phydev %i\n",
+                               phyaddr, i);
+       }
+
+       rc = mdiobus_register(miibus);
+       if (rc) {
+               dev_err(&pdev->dev, "Cannot register MDIO bus!\n");
+               goto out_err_mdiobus_register;
+       }
+
+       platform_set_drvdata(pdev, miibus);
+       return 0;
+
+out_err_mdiobus_register:
+       kfree(miibus->irq);
+out_err_irq_alloc:
+       mdiobus_free(miibus);
+out_err_alloc:
+       peripheral_free_list(pin_req);
+
+       return rc;
+}
+
+static int __devexit bfin_mii_bus_remove(struct platform_device *pdev)
+{
+       struct mii_bus *miibus = platform_get_drvdata(pdev);
+       struct bfin_mii_bus_platform_data *mii_bus_pd =
+               dev_get_platdata(&pdev->dev);
+
+       platform_set_drvdata(pdev, NULL);
+       mdiobus_unregister(miibus);
+       kfree(miibus->irq);
+       mdiobus_free(miibus);
+       peripheral_free_list(mii_bus_pd->mac_peripherals);
+
+       return 0;
+}
+
+static struct platform_driver bfin_mii_bus_driver = {
+       .probe = bfin_mii_bus_probe,
+       .remove = __devexit_p(bfin_mii_bus_remove),
+       .driver = {
+               .name = "bfin_mii_bus",
+               .owner  = THIS_MODULE,
+       },
+};
+
+static struct platform_driver bfin_mac_driver = {
+       .probe = bfin_mac_probe,
+       .remove = __devexit_p(bfin_mac_remove),
+       .resume = bfin_mac_resume,
+       .suspend = bfin_mac_suspend,
+       .driver = {
+               .name = KBUILD_MODNAME,
+               .owner  = THIS_MODULE,
+       },
+};
+
+static int __init bfin_mac_init(void)
+{
+       int ret;
+       ret = platform_driver_register(&bfin_mii_bus_driver);
+       if (!ret)
+               return platform_driver_register(&bfin_mac_driver);
+       return -ENODEV;
+}
+
+module_init(bfin_mac_init);
+
+static void __exit bfin_mac_cleanup(void)
+{
+       platform_driver_unregister(&bfin_mac_driver);
+       platform_driver_unregister(&bfin_mii_bus_driver);
+}
+
+module_exit(bfin_mac_cleanup);
+
diff --git a/drivers/net/ethernet/adi/bfin_mac.h b/drivers/net/ethernet/adi/bfin_mac.h
new file mode 100644 (file)
index 0000000..f8559ac
--- /dev/null
@@ -0,0 +1,106 @@
+/*
+ * Blackfin On-Chip MAC Driver
+ *
+ * Copyright 2004-2007 Analog Devices Inc.
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Licensed under the GPL-2 or later.
+ */
+#ifndef _BFIN_MAC_H_
+#define _BFIN_MAC_H_
+
+#include <linux/net_tstamp.h>
+#include <linux/clocksource.h>
+#include <linux/timecompare.h>
+#include <linux/timer.h>
+#include <linux/etherdevice.h>
+#include <linux/bfin_mac.h>
+
+/*
+ * Disable hardware checksum for bug #5600 if writeback cache is
+ * enabled. Otherwize, corrupted RX packet will be sent up stack
+ * without error mark.
+ */
+#ifndef CONFIG_BFIN_EXTMEM_WRITEBACK
+#define BFIN_MAC_CSUM_OFFLOAD
+#endif
+
+#define TX_RECLAIM_JIFFIES (HZ / 5)
+
+struct dma_descriptor {
+       struct dma_descriptor *next_dma_desc;
+       unsigned long start_addr;
+       unsigned short config;
+       unsigned short x_count;
+};
+
+struct status_area_rx {
+#if defined(BFIN_MAC_CSUM_OFFLOAD)
+       unsigned short ip_hdr_csum;     /* ip header checksum */
+       /* ip payload(udp or tcp or others) checksum */
+       unsigned short ip_payload_csum;
+#endif
+       unsigned long status_word;      /* the frame status word */
+};
+
+struct status_area_tx {
+       unsigned long status_word;      /* the frame status word */
+};
+
+/* use two descriptors for a packet */
+struct net_dma_desc_rx {
+       struct net_dma_desc_rx *next;
+       struct sk_buff *skb;
+       struct dma_descriptor desc_a;
+       struct dma_descriptor desc_b;
+       struct status_area_rx status;
+};
+
+/* use two descriptors for a packet */
+struct net_dma_desc_tx {
+       struct net_dma_desc_tx *next;
+       struct sk_buff *skb;
+       struct dma_descriptor desc_a;
+       struct dma_descriptor desc_b;
+       unsigned char packet[1560];
+       struct status_area_tx status;
+};
+
+struct bfin_mac_local {
+       /*
+        * these are things that the kernel wants me to keep, so users
+        * can find out semi-useless statistics of how well the card is
+        * performing
+        */
+       struct net_device_stats stats;
+
+       spinlock_t lock;
+
+       int wol;                /* Wake On Lan */
+       int irq_wake_requested;
+       struct timer_list tx_reclaim_timer;
+       struct net_device *ndev;
+
+       /* Data for EMAC_VLAN1 regs */
+       u16 vlan1_mask, vlan2_mask;
+
+       /* MII and PHY stuffs */
+       int old_link;          /* used by bf537_adjust_link */
+       int old_speed;
+       int old_duplex;
+
+       struct phy_device *phydev;
+       struct mii_bus *mii_bus;
+
+#if defined(CONFIG_BFIN_MAC_USE_HWSTAMP)
+       struct cyclecounter cycles;
+       struct timecounter clock;
+       struct timecompare compare;
+       struct hwtstamp_config stamp_cfg;
+#endif
+};
+
+extern void bfin_get_ether_addr(char *addr);
+
+#endif