cirrus: Move the Cirrus network driver
authorJeff Kirsher <jeffrey.t.kirsher@intel.com>
Sun, 17 Jul 2011 06:50:52 +0000 (23:50 -0700)
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>
Fri, 12 Aug 2011 10:40:54 +0000 (03:40 -0700)
Move the Cirrus Ethernet driver into drivers/net/ethernet/cirrus/
and make the necessary Kconfig and Makefile changes

CC: Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
MAINTAINERS
drivers/net/arm/Kconfig
drivers/net/arm/Makefile
drivers/net/arm/ep93xx_eth.c [deleted file]
drivers/net/ethernet/Kconfig
drivers/net/ethernet/Makefile
drivers/net/ethernet/cirrus/Kconfig [new file with mode: 0644]
drivers/net/ethernet/cirrus/Makefile [new file with mode: 0644]
drivers/net/ethernet/cirrus/ep93xx_eth.c [new file with mode: 0644]

index 96a2d4732e3f52945527ff9c0f0ab91107856dda..ee4ebb470122b83af46e62bf195cc746809760f8 100644 (file)
@@ -1768,7 +1768,7 @@ CIRRUS LOGIC EP93XX ETHERNET DRIVER
 M:     Hartley Sweeten <hsweeten@visionengravers.com>
 L:     netdev@vger.kernel.org
 S:     Maintained
-F:     drivers/net/arm/ep93xx_eth.c
+F:     drivers/net/ethernet/cirrus/ep93xx_eth.c
 
 CIRRUS LOGIC EP93XX OHCI USB HOST DRIVER
 M:     Lennert Buytenhek <kernel@wantstofly.org>
index 4f748ccdefe2497176f01cdcdbf788fbf0d56e34..fc94b4bd65f715d8d86268b42d7f418b7f89342f 100644 (file)
@@ -11,14 +11,6 @@ config ARM_AT91_ETHER
          If you wish to compile a kernel for the AT91RM9200 and enable
          ethernet support, then you should always answer Y to this.
 
-config EP93XX_ETH
-       tristate "EP93xx Ethernet support"
-       depends on ARM && ARCH_EP93XX
-       select MII
-       help
-         This is a driver for the ethernet hardware included in EP93xx CPUs.
-         Say Y if you are building a kernel for EP93xx based devices.
-
 config W90P910_ETH
        tristate "Nuvoton w90p910 Ethernet support"
        depends on ARM && ARCH_W90X900
index 316b06c94af57a753a63b206ecc0ac3c22ee1cb0..462b3a4fe70a184ee2bcddd1fd2e790a1bf81395 100644 (file)
@@ -4,5 +4,4 @@
 #
 
 obj-$(CONFIG_ARM_AT91_ETHER)   += at91_ether.o
-obj-$(CONFIG_EP93XX_ETH)       += ep93xx_eth.o
 obj-$(CONFIG_W90P910_ETH)      += w90p910_ether.o
diff --git a/drivers/net/arm/ep93xx_eth.c b/drivers/net/arm/ep93xx_eth.c
deleted file mode 100644 (file)
index 4317af8..0000000
+++ /dev/null
@@ -1,904 +0,0 @@
-/*
- * EP93xx ethernet network device driver
- * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
- * Dedicated to Marija Kulikova.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
-
-#include <linux/dma-mapping.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/mii.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/moduleparam.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-
-#include <mach/hardware.h>
-
-#define DRV_MODULE_NAME                "ep93xx-eth"
-#define DRV_MODULE_VERSION     "0.1"
-
-#define RX_QUEUE_ENTRIES       64
-#define TX_QUEUE_ENTRIES       8
-
-#define MAX_PKT_SIZE           2044
-#define PKT_BUF_SIZE           2048
-
-#define REG_RXCTL              0x0000
-#define  REG_RXCTL_DEFAULT     0x00073800
-#define REG_TXCTL              0x0004
-#define  REG_TXCTL_ENABLE      0x00000001
-#define REG_MIICMD             0x0010
-#define  REG_MIICMD_READ       0x00008000
-#define  REG_MIICMD_WRITE      0x00004000
-#define REG_MIIDATA            0x0014
-#define REG_MIISTS             0x0018
-#define  REG_MIISTS_BUSY       0x00000001
-#define REG_SELFCTL            0x0020
-#define  REG_SELFCTL_RESET     0x00000001
-#define REG_INTEN              0x0024
-#define  REG_INTEN_TX          0x00000008
-#define  REG_INTEN_RX          0x00000007
-#define REG_INTSTSP            0x0028
-#define  REG_INTSTS_TX         0x00000008
-#define  REG_INTSTS_RX         0x00000004
-#define REG_INTSTSC            0x002c
-#define REG_AFP                        0x004c
-#define REG_INDAD0             0x0050
-#define REG_INDAD1             0x0051
-#define REG_INDAD2             0x0052
-#define REG_INDAD3             0x0053
-#define REG_INDAD4             0x0054
-#define REG_INDAD5             0x0055
-#define REG_GIINTMSK           0x0064
-#define  REG_GIINTMSK_ENABLE   0x00008000
-#define REG_BMCTL              0x0080
-#define  REG_BMCTL_ENABLE_TX   0x00000100
-#define  REG_BMCTL_ENABLE_RX   0x00000001
-#define REG_BMSTS              0x0084
-#define  REG_BMSTS_RX_ACTIVE   0x00000008
-#define REG_RXDQBADD           0x0090
-#define REG_RXDQBLEN           0x0094
-#define REG_RXDCURADD          0x0098
-#define REG_RXDENQ             0x009c
-#define REG_RXSTSQBADD         0x00a0
-#define REG_RXSTSQBLEN         0x00a4
-#define REG_RXSTSQCURADD       0x00a8
-#define REG_RXSTSENQ           0x00ac
-#define REG_TXDQBADD           0x00b0
-#define REG_TXDQBLEN           0x00b4
-#define REG_TXDQCURADD         0x00b8
-#define REG_TXDENQ             0x00bc
-#define REG_TXSTSQBADD         0x00c0
-#define REG_TXSTSQBLEN         0x00c4
-#define REG_TXSTSQCURADD       0x00c8
-#define REG_MAXFRMLEN          0x00e8
-
-struct ep93xx_rdesc
-{
-       u32     buf_addr;
-       u32     rdesc1;
-};
-
-#define RDESC1_NSOF            0x80000000
-#define RDESC1_BUFFER_INDEX    0x7fff0000
-#define RDESC1_BUFFER_LENGTH   0x0000ffff
-
-struct ep93xx_rstat
-{
-       u32     rstat0;
-       u32     rstat1;
-};
-
-#define RSTAT0_RFP             0x80000000
-#define RSTAT0_RWE             0x40000000
-#define RSTAT0_EOF             0x20000000
-#define RSTAT0_EOB             0x10000000
-#define RSTAT0_AM              0x00c00000
-#define RSTAT0_RX_ERR          0x00200000
-#define RSTAT0_OE              0x00100000
-#define RSTAT0_FE              0x00080000
-#define RSTAT0_RUNT            0x00040000
-#define RSTAT0_EDATA           0x00020000
-#define RSTAT0_CRCE            0x00010000
-#define RSTAT0_CRCI            0x00008000
-#define RSTAT0_HTI             0x00003f00
-#define RSTAT1_RFP             0x80000000
-#define RSTAT1_BUFFER_INDEX    0x7fff0000
-#define RSTAT1_FRAME_LENGTH    0x0000ffff
-
-struct ep93xx_tdesc
-{
-       u32     buf_addr;
-       u32     tdesc1;
-};
-
-#define TDESC1_EOF             0x80000000
-#define TDESC1_BUFFER_INDEX    0x7fff0000
-#define TDESC1_BUFFER_ABORT    0x00008000
-#define TDESC1_BUFFER_LENGTH   0x00000fff
-
-struct ep93xx_tstat
-{
-       u32     tstat0;
-};
-
-#define TSTAT0_TXFP            0x80000000
-#define TSTAT0_TXWE            0x40000000
-#define TSTAT0_FA              0x20000000
-#define TSTAT0_LCRS            0x10000000
-#define TSTAT0_OW              0x04000000
-#define TSTAT0_TXU             0x02000000
-#define TSTAT0_ECOLL           0x01000000
-#define TSTAT0_NCOLL           0x001f0000
-#define TSTAT0_BUFFER_INDEX    0x00007fff
-
-struct ep93xx_descs
-{
-       struct ep93xx_rdesc     rdesc[RX_QUEUE_ENTRIES];
-       struct ep93xx_tdesc     tdesc[TX_QUEUE_ENTRIES];
-       struct ep93xx_rstat     rstat[RX_QUEUE_ENTRIES];
-       struct ep93xx_tstat     tstat[TX_QUEUE_ENTRIES];
-};
-
-struct ep93xx_priv
-{
-       struct resource         *res;
-       void __iomem            *base_addr;
-       int                     irq;
-
-       struct ep93xx_descs     *descs;
-       dma_addr_t              descs_dma_addr;
-
-       void                    *rx_buf[RX_QUEUE_ENTRIES];
-       void                    *tx_buf[TX_QUEUE_ENTRIES];
-
-       spinlock_t              rx_lock;
-       unsigned int            rx_pointer;
-       unsigned int            tx_clean_pointer;
-       unsigned int            tx_pointer;
-       spinlock_t              tx_pending_lock;
-       unsigned int            tx_pending;
-
-       struct net_device       *dev;
-       struct napi_struct      napi;
-
-       struct mii_if_info      mii;
-       u8                      mdc_divisor;
-};
-
-#define rdb(ep, off)           __raw_readb((ep)->base_addr + (off))
-#define rdw(ep, off)           __raw_readw((ep)->base_addr + (off))
-#define rdl(ep, off)           __raw_readl((ep)->base_addr + (off))
-#define wrb(ep, off, val)      __raw_writeb((val), (ep)->base_addr + (off))
-#define wrw(ep, off, val)      __raw_writew((val), (ep)->base_addr + (off))
-#define wrl(ep, off, val)      __raw_writel((val), (ep)->base_addr + (off))
-
-static int ep93xx_mdio_read(struct net_device *dev, int phy_id, int reg)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       int data;
-       int i;
-
-       wrl(ep, REG_MIICMD, REG_MIICMD_READ | (phy_id << 5) | reg);
-
-       for (i = 0; i < 10; i++) {
-               if ((rdl(ep, REG_MIISTS) & REG_MIISTS_BUSY) == 0)
-                       break;
-               msleep(1);
-       }
-
-       if (i == 10) {
-               pr_info("mdio read timed out\n");
-               data = 0xffff;
-       } else {
-               data = rdl(ep, REG_MIIDATA);
-       }
-
-       return data;
-}
-
-static void ep93xx_mdio_write(struct net_device *dev, int phy_id, int reg, int data)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       int i;
-
-       wrl(ep, REG_MIIDATA, data);
-       wrl(ep, REG_MIICMD, REG_MIICMD_WRITE | (phy_id << 5) | reg);
-
-       for (i = 0; i < 10; i++) {
-               if ((rdl(ep, REG_MIISTS) & REG_MIISTS_BUSY) == 0)
-                       break;
-               msleep(1);
-       }
-
-       if (i == 10)
-               pr_info("mdio write timed out\n");
-}
-
-static int ep93xx_rx(struct net_device *dev, int processed, int budget)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-
-       while (processed < budget) {
-               int entry;
-               struct ep93xx_rstat *rstat;
-               u32 rstat0;
-               u32 rstat1;
-               int length;
-               struct sk_buff *skb;
-
-               entry = ep->rx_pointer;
-               rstat = ep->descs->rstat + entry;
-
-               rstat0 = rstat->rstat0;
-               rstat1 = rstat->rstat1;
-               if (!(rstat0 & RSTAT0_RFP) || !(rstat1 & RSTAT1_RFP))
-                       break;
-
-               rstat->rstat0 = 0;
-               rstat->rstat1 = 0;
-
-               if (!(rstat0 & RSTAT0_EOF))
-                       pr_crit("not end-of-frame %.8x %.8x\n", rstat0, rstat1);
-               if (!(rstat0 & RSTAT0_EOB))
-                       pr_crit("not end-of-buffer %.8x %.8x\n", rstat0, rstat1);
-               if ((rstat1 & RSTAT1_BUFFER_INDEX) >> 16 != entry)
-                       pr_crit("entry mismatch %.8x %.8x\n", rstat0, rstat1);
-
-               if (!(rstat0 & RSTAT0_RWE)) {
-                       dev->stats.rx_errors++;
-                       if (rstat0 & RSTAT0_OE)
-                               dev->stats.rx_fifo_errors++;
-                       if (rstat0 & RSTAT0_FE)
-                               dev->stats.rx_frame_errors++;
-                       if (rstat0 & (RSTAT0_RUNT | RSTAT0_EDATA))
-                               dev->stats.rx_length_errors++;
-                       if (rstat0 & RSTAT0_CRCE)
-                               dev->stats.rx_crc_errors++;
-                       goto err;
-               }
-
-               length = rstat1 & RSTAT1_FRAME_LENGTH;
-               if (length > MAX_PKT_SIZE) {
-                       pr_notice("invalid length %.8x %.8x\n", rstat0, rstat1);
-                       goto err;
-               }
-
-               /* Strip FCS.  */
-               if (rstat0 & RSTAT0_CRCI)
-                       length -= 4;
-
-               skb = dev_alloc_skb(length + 2);
-               if (likely(skb != NULL)) {
-                       struct ep93xx_rdesc *rxd = &ep->descs->rdesc[entry];
-                       skb_reserve(skb, 2);
-                       dma_sync_single_for_cpu(dev->dev.parent, rxd->buf_addr,
-                                               length, DMA_FROM_DEVICE);
-                       skb_copy_to_linear_data(skb, ep->rx_buf[entry], length);
-                       dma_sync_single_for_device(dev->dev.parent,
-                                                  rxd->buf_addr, length,
-                                                  DMA_FROM_DEVICE);
-                       skb_put(skb, length);
-                       skb->protocol = eth_type_trans(skb, dev);
-
-                       netif_receive_skb(skb);
-
-                       dev->stats.rx_packets++;
-                       dev->stats.rx_bytes += length;
-               } else {
-                       dev->stats.rx_dropped++;
-               }
-
-err:
-               ep->rx_pointer = (entry + 1) & (RX_QUEUE_ENTRIES - 1);
-               processed++;
-       }
-
-       return processed;
-}
-
-static int ep93xx_have_more_rx(struct ep93xx_priv *ep)
-{
-       struct ep93xx_rstat *rstat = ep->descs->rstat + ep->rx_pointer;
-       return !!((rstat->rstat0 & RSTAT0_RFP) && (rstat->rstat1 & RSTAT1_RFP));
-}
-
-static int ep93xx_poll(struct napi_struct *napi, int budget)
-{
-       struct ep93xx_priv *ep = container_of(napi, struct ep93xx_priv, napi);
-       struct net_device *dev = ep->dev;
-       int rx = 0;
-
-poll_some_more:
-       rx = ep93xx_rx(dev, rx, budget);
-       if (rx < budget) {
-               int more = 0;
-
-               spin_lock_irq(&ep->rx_lock);
-               __napi_complete(napi);
-               wrl(ep, REG_INTEN, REG_INTEN_TX | REG_INTEN_RX);
-               if (ep93xx_have_more_rx(ep)) {
-                       wrl(ep, REG_INTEN, REG_INTEN_TX);
-                       wrl(ep, REG_INTSTSP, REG_INTSTS_RX);
-                       more = 1;
-               }
-               spin_unlock_irq(&ep->rx_lock);
-
-               if (more && napi_reschedule(napi))
-                       goto poll_some_more;
-       }
-
-       if (rx) {
-               wrw(ep, REG_RXDENQ, rx);
-               wrw(ep, REG_RXSTSENQ, rx);
-       }
-
-       return rx;
-}
-
-static int ep93xx_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       struct ep93xx_tdesc *txd;
-       int entry;
-
-       if (unlikely(skb->len > MAX_PKT_SIZE)) {
-               dev->stats.tx_dropped++;
-               dev_kfree_skb(skb);
-               return NETDEV_TX_OK;
-       }
-
-       entry = ep->tx_pointer;
-       ep->tx_pointer = (ep->tx_pointer + 1) & (TX_QUEUE_ENTRIES - 1);
-
-       txd = &ep->descs->tdesc[entry];
-
-       txd->tdesc1 = TDESC1_EOF | (entry << 16) | (skb->len & 0xfff);
-       dma_sync_single_for_cpu(dev->dev.parent, txd->buf_addr, skb->len,
-                               DMA_TO_DEVICE);
-       skb_copy_and_csum_dev(skb, ep->tx_buf[entry]);
-       dma_sync_single_for_device(dev->dev.parent, txd->buf_addr, skb->len,
-                                  DMA_TO_DEVICE);
-       dev_kfree_skb(skb);
-
-       spin_lock_irq(&ep->tx_pending_lock);
-       ep->tx_pending++;
-       if (ep->tx_pending == TX_QUEUE_ENTRIES)
-               netif_stop_queue(dev);
-       spin_unlock_irq(&ep->tx_pending_lock);
-
-       wrl(ep, REG_TXDENQ, 1);
-
-       return NETDEV_TX_OK;
-}
-
-static void ep93xx_tx_complete(struct net_device *dev)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       int wake;
-
-       wake = 0;
-
-       spin_lock(&ep->tx_pending_lock);
-       while (1) {
-               int entry;
-               struct ep93xx_tstat *tstat;
-               u32 tstat0;
-
-               entry = ep->tx_clean_pointer;
-               tstat = ep->descs->tstat + entry;
-
-               tstat0 = tstat->tstat0;
-               if (!(tstat0 & TSTAT0_TXFP))
-                       break;
-
-               tstat->tstat0 = 0;
-
-               if (tstat0 & TSTAT0_FA)
-                       pr_crit("frame aborted %.8x\n", tstat0);
-               if ((tstat0 & TSTAT0_BUFFER_INDEX) != entry)
-                       pr_crit("entry mismatch %.8x\n", tstat0);
-
-               if (tstat0 & TSTAT0_TXWE) {
-                       int length = ep->descs->tdesc[entry].tdesc1 & 0xfff;
-
-                       dev->stats.tx_packets++;
-                       dev->stats.tx_bytes += length;
-               } else {
-                       dev->stats.tx_errors++;
-               }
-
-               if (tstat0 & TSTAT0_OW)
-                       dev->stats.tx_window_errors++;
-               if (tstat0 & TSTAT0_TXU)
-                       dev->stats.tx_fifo_errors++;
-               dev->stats.collisions += (tstat0 >> 16) & 0x1f;
-
-               ep->tx_clean_pointer = (entry + 1) & (TX_QUEUE_ENTRIES - 1);
-               if (ep->tx_pending == TX_QUEUE_ENTRIES)
-                       wake = 1;
-               ep->tx_pending--;
-       }
-       spin_unlock(&ep->tx_pending_lock);
-
-       if (wake)
-               netif_wake_queue(dev);
-}
-
-static irqreturn_t ep93xx_irq(int irq, void *dev_id)
-{
-       struct net_device *dev = dev_id;
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       u32 status;
-
-       status = rdl(ep, REG_INTSTSC);
-       if (status == 0)
-               return IRQ_NONE;
-
-       if (status & REG_INTSTS_RX) {
-               spin_lock(&ep->rx_lock);
-               if (likely(napi_schedule_prep(&ep->napi))) {
-                       wrl(ep, REG_INTEN, REG_INTEN_TX);
-                       __napi_schedule(&ep->napi);
-               }
-               spin_unlock(&ep->rx_lock);
-       }
-
-       if (status & REG_INTSTS_TX)
-               ep93xx_tx_complete(dev);
-
-       return IRQ_HANDLED;
-}
-
-static void ep93xx_free_buffers(struct ep93xx_priv *ep)
-{
-       struct device *dev = ep->dev->dev.parent;
-       int i;
-
-       for (i = 0; i < RX_QUEUE_ENTRIES; i++) {
-               dma_addr_t d;
-
-               d = ep->descs->rdesc[i].buf_addr;
-               if (d)
-                       dma_unmap_single(dev, d, PKT_BUF_SIZE, DMA_FROM_DEVICE);
-
-               if (ep->rx_buf[i] != NULL)
-                       kfree(ep->rx_buf[i]);
-       }
-
-       for (i = 0; i < TX_QUEUE_ENTRIES; i++) {
-               dma_addr_t d;
-
-               d = ep->descs->tdesc[i].buf_addr;
-               if (d)
-                       dma_unmap_single(dev, d, PKT_BUF_SIZE, DMA_TO_DEVICE);
-
-               if (ep->tx_buf[i] != NULL)
-                       kfree(ep->tx_buf[i]);
-       }
-
-       dma_free_coherent(dev, sizeof(struct ep93xx_descs), ep->descs,
-                                                       ep->descs_dma_addr);
-}
-
-static int ep93xx_alloc_buffers(struct ep93xx_priv *ep)
-{
-       struct device *dev = ep->dev->dev.parent;
-       int i;
-
-       ep->descs = dma_alloc_coherent(dev, sizeof(struct ep93xx_descs),
-                               &ep->descs_dma_addr, GFP_KERNEL);
-       if (ep->descs == NULL)
-               return 1;
-
-       for (i = 0; i < RX_QUEUE_ENTRIES; i++) {
-               void *buf;
-               dma_addr_t d;
-
-               buf = kmalloc(PKT_BUF_SIZE, GFP_KERNEL);
-               if (buf == NULL)
-                       goto err;
-
-               d = dma_map_single(dev, buf, PKT_BUF_SIZE, DMA_FROM_DEVICE);
-               if (dma_mapping_error(dev, d)) {
-                       kfree(buf);
-                       goto err;
-               }
-
-               ep->rx_buf[i] = buf;
-               ep->descs->rdesc[i].buf_addr = d;
-               ep->descs->rdesc[i].rdesc1 = (i << 16) | PKT_BUF_SIZE;
-       }
-
-       for (i = 0; i < TX_QUEUE_ENTRIES; i++) {
-               void *buf;
-               dma_addr_t d;
-
-               buf = kmalloc(PKT_BUF_SIZE, GFP_KERNEL);
-               if (buf == NULL)
-                       goto err;
-
-               d = dma_map_single(dev, buf, PKT_BUF_SIZE, DMA_TO_DEVICE);
-               if (dma_mapping_error(dev, d)) {
-                       kfree(buf);
-                       goto err;
-               }
-
-               ep->tx_buf[i] = buf;
-               ep->descs->tdesc[i].buf_addr = d;
-       }
-
-       return 0;
-
-err:
-       ep93xx_free_buffers(ep);
-       return 1;
-}
-
-static int ep93xx_start_hw(struct net_device *dev)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       unsigned long addr;
-       int i;
-
-       wrl(ep, REG_SELFCTL, REG_SELFCTL_RESET);
-       for (i = 0; i < 10; i++) {
-               if ((rdl(ep, REG_SELFCTL) & REG_SELFCTL_RESET) == 0)
-                       break;
-               msleep(1);
-       }
-
-       if (i == 10) {
-               pr_crit("hw failed to reset\n");
-               return 1;
-       }
-
-       wrl(ep, REG_SELFCTL, ((ep->mdc_divisor - 1) << 9));
-
-       /* Does the PHY support preamble suppress?  */
-       if ((ep93xx_mdio_read(dev, ep->mii.phy_id, MII_BMSR) & 0x0040) != 0)
-               wrl(ep, REG_SELFCTL, ((ep->mdc_divisor - 1) << 9) | (1 << 8));
-
-       /* Receive descriptor ring.  */
-       addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, rdesc);
-       wrl(ep, REG_RXDQBADD, addr);
-       wrl(ep, REG_RXDCURADD, addr);
-       wrw(ep, REG_RXDQBLEN, RX_QUEUE_ENTRIES * sizeof(struct ep93xx_rdesc));
-
-       /* Receive status ring.  */
-       addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, rstat);
-       wrl(ep, REG_RXSTSQBADD, addr);
-       wrl(ep, REG_RXSTSQCURADD, addr);
-       wrw(ep, REG_RXSTSQBLEN, RX_QUEUE_ENTRIES * sizeof(struct ep93xx_rstat));
-
-       /* Transmit descriptor ring.  */
-       addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, tdesc);
-       wrl(ep, REG_TXDQBADD, addr);
-       wrl(ep, REG_TXDQCURADD, addr);
-       wrw(ep, REG_TXDQBLEN, TX_QUEUE_ENTRIES * sizeof(struct ep93xx_tdesc));
-
-       /* Transmit status ring.  */
-       addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, tstat);
-       wrl(ep, REG_TXSTSQBADD, addr);
-       wrl(ep, REG_TXSTSQCURADD, addr);
-       wrw(ep, REG_TXSTSQBLEN, TX_QUEUE_ENTRIES * sizeof(struct ep93xx_tstat));
-
-       wrl(ep, REG_BMCTL, REG_BMCTL_ENABLE_TX | REG_BMCTL_ENABLE_RX);
-       wrl(ep, REG_INTEN, REG_INTEN_TX | REG_INTEN_RX);
-       wrl(ep, REG_GIINTMSK, 0);
-
-       for (i = 0; i < 10; i++) {
-               if ((rdl(ep, REG_BMSTS) & REG_BMSTS_RX_ACTIVE) != 0)
-                       break;
-               msleep(1);
-       }
-
-       if (i == 10) {
-               pr_crit("hw failed to start\n");
-               return 1;
-       }
-
-       wrl(ep, REG_RXDENQ, RX_QUEUE_ENTRIES);
-       wrl(ep, REG_RXSTSENQ, RX_QUEUE_ENTRIES);
-
-       wrb(ep, REG_INDAD0, dev->dev_addr[0]);
-       wrb(ep, REG_INDAD1, dev->dev_addr[1]);
-       wrb(ep, REG_INDAD2, dev->dev_addr[2]);
-       wrb(ep, REG_INDAD3, dev->dev_addr[3]);
-       wrb(ep, REG_INDAD4, dev->dev_addr[4]);
-       wrb(ep, REG_INDAD5, dev->dev_addr[5]);
-       wrl(ep, REG_AFP, 0);
-
-       wrl(ep, REG_MAXFRMLEN, (MAX_PKT_SIZE << 16) | MAX_PKT_SIZE);
-
-       wrl(ep, REG_RXCTL, REG_RXCTL_DEFAULT);
-       wrl(ep, REG_TXCTL, REG_TXCTL_ENABLE);
-
-       return 0;
-}
-
-static void ep93xx_stop_hw(struct net_device *dev)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       int i;
-
-       wrl(ep, REG_SELFCTL, REG_SELFCTL_RESET);
-       for (i = 0; i < 10; i++) {
-               if ((rdl(ep, REG_SELFCTL) & REG_SELFCTL_RESET) == 0)
-                       break;
-               msleep(1);
-       }
-
-       if (i == 10)
-               pr_crit("hw failed to reset\n");
-}
-
-static int ep93xx_open(struct net_device *dev)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       int err;
-
-       if (ep93xx_alloc_buffers(ep))
-               return -ENOMEM;
-
-       napi_enable(&ep->napi);
-
-       if (ep93xx_start_hw(dev)) {
-               napi_disable(&ep->napi);
-               ep93xx_free_buffers(ep);
-               return -EIO;
-       }
-
-       spin_lock_init(&ep->rx_lock);
-       ep->rx_pointer = 0;
-       ep->tx_clean_pointer = 0;
-       ep->tx_pointer = 0;
-       spin_lock_init(&ep->tx_pending_lock);
-       ep->tx_pending = 0;
-
-       err = request_irq(ep->irq, ep93xx_irq, IRQF_SHARED, dev->name, dev);
-       if (err) {
-               napi_disable(&ep->napi);
-               ep93xx_stop_hw(dev);
-               ep93xx_free_buffers(ep);
-               return err;
-       }
-
-       wrl(ep, REG_GIINTMSK, REG_GIINTMSK_ENABLE);
-
-       netif_start_queue(dev);
-
-       return 0;
-}
-
-static int ep93xx_close(struct net_device *dev)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-
-       napi_disable(&ep->napi);
-       netif_stop_queue(dev);
-
-       wrl(ep, REG_GIINTMSK, 0);
-       free_irq(ep->irq, dev);
-       ep93xx_stop_hw(dev);
-       ep93xx_free_buffers(ep);
-
-       return 0;
-}
-
-static int ep93xx_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       struct mii_ioctl_data *data = if_mii(ifr);
-
-       return generic_mii_ioctl(&ep->mii, data, cmd, NULL);
-}
-
-static void ep93xx_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
-{
-       strcpy(info->driver, DRV_MODULE_NAME);
-       strcpy(info->version, DRV_MODULE_VERSION);
-}
-
-static int ep93xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       return mii_ethtool_gset(&ep->mii, cmd);
-}
-
-static int ep93xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       return mii_ethtool_sset(&ep->mii, cmd);
-}
-
-static int ep93xx_nway_reset(struct net_device *dev)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       return mii_nway_restart(&ep->mii);
-}
-
-static u32 ep93xx_get_link(struct net_device *dev)
-{
-       struct ep93xx_priv *ep = netdev_priv(dev);
-       return mii_link_ok(&ep->mii);
-}
-
-static const struct ethtool_ops ep93xx_ethtool_ops = {
-       .get_drvinfo            = ep93xx_get_drvinfo,
-       .get_settings           = ep93xx_get_settings,
-       .set_settings           = ep93xx_set_settings,
-       .nway_reset             = ep93xx_nway_reset,
-       .get_link               = ep93xx_get_link,
-};
-
-static const struct net_device_ops ep93xx_netdev_ops = {
-       .ndo_open               = ep93xx_open,
-       .ndo_stop               = ep93xx_close,
-       .ndo_start_xmit         = ep93xx_xmit,
-       .ndo_do_ioctl           = ep93xx_ioctl,
-       .ndo_validate_addr      = eth_validate_addr,
-       .ndo_change_mtu         = eth_change_mtu,
-       .ndo_set_mac_address    = eth_mac_addr,
-};
-
-static struct net_device *ep93xx_dev_alloc(struct ep93xx_eth_data *data)
-{
-       struct net_device *dev;
-
-       dev = alloc_etherdev(sizeof(struct ep93xx_priv));
-       if (dev == NULL)
-               return NULL;
-
-       memcpy(dev->dev_addr, data->dev_addr, ETH_ALEN);
-
-       dev->ethtool_ops = &ep93xx_ethtool_ops;
-       dev->netdev_ops = &ep93xx_netdev_ops;
-
-       dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
-
-       return dev;
-}
-
-
-static int ep93xx_eth_remove(struct platform_device *pdev)
-{
-       struct net_device *dev;
-       struct ep93xx_priv *ep;
-
-       dev = platform_get_drvdata(pdev);
-       if (dev == NULL)
-               return 0;
-       platform_set_drvdata(pdev, NULL);
-
-       ep = netdev_priv(dev);
-
-       /* @@@ Force down.  */
-       unregister_netdev(dev);
-       ep93xx_free_buffers(ep);
-
-       if (ep->base_addr != NULL)
-               iounmap(ep->base_addr);
-
-       if (ep->res != NULL) {
-               release_resource(ep->res);
-               kfree(ep->res);
-       }
-
-       free_netdev(dev);
-
-       return 0;
-}
-
-static int ep93xx_eth_probe(struct platform_device *pdev)
-{
-       struct ep93xx_eth_data *data;
-       struct net_device *dev;
-       struct ep93xx_priv *ep;
-       struct resource *mem;
-       int irq;
-       int err;
-
-       if (pdev == NULL)
-               return -ENODEV;
-       data = pdev->dev.platform_data;
-
-       mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       irq = platform_get_irq(pdev, 0);
-       if (!mem || irq < 0)
-               return -ENXIO;
-
-       dev = ep93xx_dev_alloc(data);
-       if (dev == NULL) {
-               err = -ENOMEM;
-               goto err_out;
-       }
-       ep = netdev_priv(dev);
-       ep->dev = dev;
-       SET_NETDEV_DEV(dev, &pdev->dev);
-       netif_napi_add(dev, &ep->napi, ep93xx_poll, 64);
-
-       platform_set_drvdata(pdev, dev);
-
-       ep->res = request_mem_region(mem->start, resource_size(mem),
-                                    dev_name(&pdev->dev));
-       if (ep->res == NULL) {
-               dev_err(&pdev->dev, "Could not reserve memory region\n");
-               err = -ENOMEM;
-               goto err_out;
-       }
-
-       ep->base_addr = ioremap(mem->start, resource_size(mem));
-       if (ep->base_addr == NULL) {
-               dev_err(&pdev->dev, "Failed to ioremap ethernet registers\n");
-               err = -EIO;
-               goto err_out;
-       }
-       ep->irq = irq;
-
-       ep->mii.phy_id = data->phy_id;
-       ep->mii.phy_id_mask = 0x1f;
-       ep->mii.reg_num_mask = 0x1f;
-       ep->mii.dev = dev;
-       ep->mii.mdio_read = ep93xx_mdio_read;
-       ep->mii.mdio_write = ep93xx_mdio_write;
-       ep->mdc_divisor = 40;   /* Max HCLK 100 MHz, min MDIO clk 2.5 MHz.  */
-
-       if (is_zero_ether_addr(dev->dev_addr))
-               random_ether_addr(dev->dev_addr);
-
-       err = register_netdev(dev);
-       if (err) {
-               dev_err(&pdev->dev, "Failed to register netdev\n");
-               goto err_out;
-       }
-
-       printk(KERN_INFO "%s: ep93xx on-chip ethernet, IRQ %d, %pM\n",
-                       dev->name, ep->irq, dev->dev_addr);
-
-       return 0;
-
-err_out:
-       ep93xx_eth_remove(pdev);
-       return err;
-}
-
-
-static struct platform_driver ep93xx_eth_driver = {
-       .probe          = ep93xx_eth_probe,
-       .remove         = ep93xx_eth_remove,
-       .driver         = {
-               .name   = "ep93xx-eth",
-               .owner  = THIS_MODULE,
-       },
-};
-
-static int __init ep93xx_eth_init_module(void)
-{
-       printk(KERN_INFO DRV_MODULE_NAME " version " DRV_MODULE_VERSION " loading\n");
-       return platform_driver_register(&ep93xx_eth_driver);
-}
-
-static void __exit ep93xx_eth_cleanup_module(void)
-{
-       platform_driver_unregister(&ep93xx_eth_driver);
-}
-
-module_init(ep93xx_eth_init_module);
-module_exit(ep93xx_eth_cleanup_module);
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:ep93xx-eth");
index b15b1e2ed3982a0fbf3c07643c1b8c2fbd245f25..ff0740816543b407e15d5ef7a0e85ac3176a7970 100644 (file)
@@ -18,6 +18,7 @@ source "drivers/net/ethernet/atheros/Kconfig"
 source "drivers/net/ethernet/broadcom/Kconfig"
 source "drivers/net/ethernet/brocade/Kconfig"
 source "drivers/net/ethernet/chelsio/Kconfig"
+source "drivers/net/ethernet/cirrus/Kconfig"
 source "drivers/net/ethernet/cisco/Kconfig"
 source "drivers/net/ethernet/dec/Kconfig"
 source "drivers/net/ethernet/dlink/Kconfig"
index 1f45ec9a9dcac4dea34568f449b9666506d64bd2..3a17413a3d95e6e9b18a47a3285ef6c8e7886be7 100644 (file)
@@ -10,6 +10,7 @@ obj-$(CONFIG_NET_VENDOR_ATHEROS) += atheros/
 obj-$(CONFIG_NET_VENDOR_BROADCOM) += broadcom/
 obj-$(CONFIG_NET_VENDOR_BROCADE) += brocade/
 obj-$(CONFIG_NET_VENDOR_CHELSIO) += chelsio/
+obj-$(CONFIG_NET_VENDOR_CIRRUS) += cirrus/
 obj-$(CONFIG_NET_VENDOR_CISCO) += cisco/
 obj-$(CONFIG_NET_VENDOR_DEC) += dec/
 obj-$(CONFIG_NET_VENDOR_DLINK) += dlink/
diff --git a/drivers/net/ethernet/cirrus/Kconfig b/drivers/net/ethernet/cirrus/Kconfig
new file mode 100644 (file)
index 0000000..53ebe78
--- /dev/null
@@ -0,0 +1,28 @@
+#
+# Cirrus network device configuration
+#
+
+config NET_VENDOR_CIRRUS
+       bool "Cirrus devices"
+       depends on ARM && ARCH_EP93XX
+       ---help---
+         If you have a network (Ethernet) card belonging to this class, say Y
+         and read the Ethernet-HOWTO, available from
+         <http://www.tldp.org/docs.html#howto>.
+
+         Note that the answer to this question doesn't directly affect the
+         kernel: saying N will just cause the configurator to skip all
+         the questions about Cirrus cards. If you say Y, you will be asked
+         for your specific card in the following questions.
+
+if NET_VENDOR_CIRRUS
+
+config EP93XX_ETH
+       tristate "EP93xx Ethernet support"
+       depends on ARM && ARCH_EP93XX
+       select MII
+       help
+         This is a driver for the ethernet hardware included in EP93xx CPUs.
+         Say Y if you are building a kernel for EP93xx based devices.
+
+endif # NET_VENDOR_CIRRUS
diff --git a/drivers/net/ethernet/cirrus/Makefile b/drivers/net/ethernet/cirrus/Makefile
new file mode 100644 (file)
index 0000000..9905ea2
--- /dev/null
@@ -0,0 +1,5 @@
+#
+# Makefile for the Cirrus network device drivers.
+#
+
+obj-$(CONFIG_EP93XX_ETH) += ep93xx_eth.o
diff --git a/drivers/net/ethernet/cirrus/ep93xx_eth.c b/drivers/net/ethernet/cirrus/ep93xx_eth.c
new file mode 100644 (file)
index 0000000..4317af8
--- /dev/null
@@ -0,0 +1,904 @@
+/*
+ * EP93xx ethernet network device driver
+ * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
+
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/mii.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/moduleparam.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+
+#include <mach/hardware.h>
+
+#define DRV_MODULE_NAME                "ep93xx-eth"
+#define DRV_MODULE_VERSION     "0.1"
+
+#define RX_QUEUE_ENTRIES       64
+#define TX_QUEUE_ENTRIES       8
+
+#define MAX_PKT_SIZE           2044
+#define PKT_BUF_SIZE           2048
+
+#define REG_RXCTL              0x0000
+#define  REG_RXCTL_DEFAULT     0x00073800
+#define REG_TXCTL              0x0004
+#define  REG_TXCTL_ENABLE      0x00000001
+#define REG_MIICMD             0x0010
+#define  REG_MIICMD_READ       0x00008000
+#define  REG_MIICMD_WRITE      0x00004000
+#define REG_MIIDATA            0x0014
+#define REG_MIISTS             0x0018
+#define  REG_MIISTS_BUSY       0x00000001
+#define REG_SELFCTL            0x0020
+#define  REG_SELFCTL_RESET     0x00000001
+#define REG_INTEN              0x0024
+#define  REG_INTEN_TX          0x00000008
+#define  REG_INTEN_RX          0x00000007
+#define REG_INTSTSP            0x0028
+#define  REG_INTSTS_TX         0x00000008
+#define  REG_INTSTS_RX         0x00000004
+#define REG_INTSTSC            0x002c
+#define REG_AFP                        0x004c
+#define REG_INDAD0             0x0050
+#define REG_INDAD1             0x0051
+#define REG_INDAD2             0x0052
+#define REG_INDAD3             0x0053
+#define REG_INDAD4             0x0054
+#define REG_INDAD5             0x0055
+#define REG_GIINTMSK           0x0064
+#define  REG_GIINTMSK_ENABLE   0x00008000
+#define REG_BMCTL              0x0080
+#define  REG_BMCTL_ENABLE_TX   0x00000100
+#define  REG_BMCTL_ENABLE_RX   0x00000001
+#define REG_BMSTS              0x0084
+#define  REG_BMSTS_RX_ACTIVE   0x00000008
+#define REG_RXDQBADD           0x0090
+#define REG_RXDQBLEN           0x0094
+#define REG_RXDCURADD          0x0098
+#define REG_RXDENQ             0x009c
+#define REG_RXSTSQBADD         0x00a0
+#define REG_RXSTSQBLEN         0x00a4
+#define REG_RXSTSQCURADD       0x00a8
+#define REG_RXSTSENQ           0x00ac
+#define REG_TXDQBADD           0x00b0
+#define REG_TXDQBLEN           0x00b4
+#define REG_TXDQCURADD         0x00b8
+#define REG_TXDENQ             0x00bc
+#define REG_TXSTSQBADD         0x00c0
+#define REG_TXSTSQBLEN         0x00c4
+#define REG_TXSTSQCURADD       0x00c8
+#define REG_MAXFRMLEN          0x00e8
+
+struct ep93xx_rdesc
+{
+       u32     buf_addr;
+       u32     rdesc1;
+};
+
+#define RDESC1_NSOF            0x80000000
+#define RDESC1_BUFFER_INDEX    0x7fff0000
+#define RDESC1_BUFFER_LENGTH   0x0000ffff
+
+struct ep93xx_rstat
+{
+       u32     rstat0;
+       u32     rstat1;
+};
+
+#define RSTAT0_RFP             0x80000000
+#define RSTAT0_RWE             0x40000000
+#define RSTAT0_EOF             0x20000000
+#define RSTAT0_EOB             0x10000000
+#define RSTAT0_AM              0x00c00000
+#define RSTAT0_RX_ERR          0x00200000
+#define RSTAT0_OE              0x00100000
+#define RSTAT0_FE              0x00080000
+#define RSTAT0_RUNT            0x00040000
+#define RSTAT0_EDATA           0x00020000
+#define RSTAT0_CRCE            0x00010000
+#define RSTAT0_CRCI            0x00008000
+#define RSTAT0_HTI             0x00003f00
+#define RSTAT1_RFP             0x80000000
+#define RSTAT1_BUFFER_INDEX    0x7fff0000
+#define RSTAT1_FRAME_LENGTH    0x0000ffff
+
+struct ep93xx_tdesc
+{
+       u32     buf_addr;
+       u32     tdesc1;
+};
+
+#define TDESC1_EOF             0x80000000
+#define TDESC1_BUFFER_INDEX    0x7fff0000
+#define TDESC1_BUFFER_ABORT    0x00008000
+#define TDESC1_BUFFER_LENGTH   0x00000fff
+
+struct ep93xx_tstat
+{
+       u32     tstat0;
+};
+
+#define TSTAT0_TXFP            0x80000000
+#define TSTAT0_TXWE            0x40000000
+#define TSTAT0_FA              0x20000000
+#define TSTAT0_LCRS            0x10000000
+#define TSTAT0_OW              0x04000000
+#define TSTAT0_TXU             0x02000000
+#define TSTAT0_ECOLL           0x01000000
+#define TSTAT0_NCOLL           0x001f0000
+#define TSTAT0_BUFFER_INDEX    0x00007fff
+
+struct ep93xx_descs
+{
+       struct ep93xx_rdesc     rdesc[RX_QUEUE_ENTRIES];
+       struct ep93xx_tdesc     tdesc[TX_QUEUE_ENTRIES];
+       struct ep93xx_rstat     rstat[RX_QUEUE_ENTRIES];
+       struct ep93xx_tstat     tstat[TX_QUEUE_ENTRIES];
+};
+
+struct ep93xx_priv
+{
+       struct resource         *res;
+       void __iomem            *base_addr;
+       int                     irq;
+
+       struct ep93xx_descs     *descs;
+       dma_addr_t              descs_dma_addr;
+
+       void                    *rx_buf[RX_QUEUE_ENTRIES];
+       void                    *tx_buf[TX_QUEUE_ENTRIES];
+
+       spinlock_t              rx_lock;
+       unsigned int            rx_pointer;
+       unsigned int            tx_clean_pointer;
+       unsigned int            tx_pointer;
+       spinlock_t              tx_pending_lock;
+       unsigned int            tx_pending;
+
+       struct net_device       *dev;
+       struct napi_struct      napi;
+
+       struct mii_if_info      mii;
+       u8                      mdc_divisor;
+};
+
+#define rdb(ep, off)           __raw_readb((ep)->base_addr + (off))
+#define rdw(ep, off)           __raw_readw((ep)->base_addr + (off))
+#define rdl(ep, off)           __raw_readl((ep)->base_addr + (off))
+#define wrb(ep, off, val)      __raw_writeb((val), (ep)->base_addr + (off))
+#define wrw(ep, off, val)      __raw_writew((val), (ep)->base_addr + (off))
+#define wrl(ep, off, val)      __raw_writel((val), (ep)->base_addr + (off))
+
+static int ep93xx_mdio_read(struct net_device *dev, int phy_id, int reg)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       int data;
+       int i;
+
+       wrl(ep, REG_MIICMD, REG_MIICMD_READ | (phy_id << 5) | reg);
+
+       for (i = 0; i < 10; i++) {
+               if ((rdl(ep, REG_MIISTS) & REG_MIISTS_BUSY) == 0)
+                       break;
+               msleep(1);
+       }
+
+       if (i == 10) {
+               pr_info("mdio read timed out\n");
+               data = 0xffff;
+       } else {
+               data = rdl(ep, REG_MIIDATA);
+       }
+
+       return data;
+}
+
+static void ep93xx_mdio_write(struct net_device *dev, int phy_id, int reg, int data)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       int i;
+
+       wrl(ep, REG_MIIDATA, data);
+       wrl(ep, REG_MIICMD, REG_MIICMD_WRITE | (phy_id << 5) | reg);
+
+       for (i = 0; i < 10; i++) {
+               if ((rdl(ep, REG_MIISTS) & REG_MIISTS_BUSY) == 0)
+                       break;
+               msleep(1);
+       }
+
+       if (i == 10)
+               pr_info("mdio write timed out\n");
+}
+
+static int ep93xx_rx(struct net_device *dev, int processed, int budget)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+
+       while (processed < budget) {
+               int entry;
+               struct ep93xx_rstat *rstat;
+               u32 rstat0;
+               u32 rstat1;
+               int length;
+               struct sk_buff *skb;
+
+               entry = ep->rx_pointer;
+               rstat = ep->descs->rstat + entry;
+
+               rstat0 = rstat->rstat0;
+               rstat1 = rstat->rstat1;
+               if (!(rstat0 & RSTAT0_RFP) || !(rstat1 & RSTAT1_RFP))
+                       break;
+
+               rstat->rstat0 = 0;
+               rstat->rstat1 = 0;
+
+               if (!(rstat0 & RSTAT0_EOF))
+                       pr_crit("not end-of-frame %.8x %.8x\n", rstat0, rstat1);
+               if (!(rstat0 & RSTAT0_EOB))
+                       pr_crit("not end-of-buffer %.8x %.8x\n", rstat0, rstat1);
+               if ((rstat1 & RSTAT1_BUFFER_INDEX) >> 16 != entry)
+                       pr_crit("entry mismatch %.8x %.8x\n", rstat0, rstat1);
+
+               if (!(rstat0 & RSTAT0_RWE)) {
+                       dev->stats.rx_errors++;
+                       if (rstat0 & RSTAT0_OE)
+                               dev->stats.rx_fifo_errors++;
+                       if (rstat0 & RSTAT0_FE)
+                               dev->stats.rx_frame_errors++;
+                       if (rstat0 & (RSTAT0_RUNT | RSTAT0_EDATA))
+                               dev->stats.rx_length_errors++;
+                       if (rstat0 & RSTAT0_CRCE)
+                               dev->stats.rx_crc_errors++;
+                       goto err;
+               }
+
+               length = rstat1 & RSTAT1_FRAME_LENGTH;
+               if (length > MAX_PKT_SIZE) {
+                       pr_notice("invalid length %.8x %.8x\n", rstat0, rstat1);
+                       goto err;
+               }
+
+               /* Strip FCS.  */
+               if (rstat0 & RSTAT0_CRCI)
+                       length -= 4;
+
+               skb = dev_alloc_skb(length + 2);
+               if (likely(skb != NULL)) {
+                       struct ep93xx_rdesc *rxd = &ep->descs->rdesc[entry];
+                       skb_reserve(skb, 2);
+                       dma_sync_single_for_cpu(dev->dev.parent, rxd->buf_addr,
+                                               length, DMA_FROM_DEVICE);
+                       skb_copy_to_linear_data(skb, ep->rx_buf[entry], length);
+                       dma_sync_single_for_device(dev->dev.parent,
+                                                  rxd->buf_addr, length,
+                                                  DMA_FROM_DEVICE);
+                       skb_put(skb, length);
+                       skb->protocol = eth_type_trans(skb, dev);
+
+                       netif_receive_skb(skb);
+
+                       dev->stats.rx_packets++;
+                       dev->stats.rx_bytes += length;
+               } else {
+                       dev->stats.rx_dropped++;
+               }
+
+err:
+               ep->rx_pointer = (entry + 1) & (RX_QUEUE_ENTRIES - 1);
+               processed++;
+       }
+
+       return processed;
+}
+
+static int ep93xx_have_more_rx(struct ep93xx_priv *ep)
+{
+       struct ep93xx_rstat *rstat = ep->descs->rstat + ep->rx_pointer;
+       return !!((rstat->rstat0 & RSTAT0_RFP) && (rstat->rstat1 & RSTAT1_RFP));
+}
+
+static int ep93xx_poll(struct napi_struct *napi, int budget)
+{
+       struct ep93xx_priv *ep = container_of(napi, struct ep93xx_priv, napi);
+       struct net_device *dev = ep->dev;
+       int rx = 0;
+
+poll_some_more:
+       rx = ep93xx_rx(dev, rx, budget);
+       if (rx < budget) {
+               int more = 0;
+
+               spin_lock_irq(&ep->rx_lock);
+               __napi_complete(napi);
+               wrl(ep, REG_INTEN, REG_INTEN_TX | REG_INTEN_RX);
+               if (ep93xx_have_more_rx(ep)) {
+                       wrl(ep, REG_INTEN, REG_INTEN_TX);
+                       wrl(ep, REG_INTSTSP, REG_INTSTS_RX);
+                       more = 1;
+               }
+               spin_unlock_irq(&ep->rx_lock);
+
+               if (more && napi_reschedule(napi))
+                       goto poll_some_more;
+       }
+
+       if (rx) {
+               wrw(ep, REG_RXDENQ, rx);
+               wrw(ep, REG_RXSTSENQ, rx);
+       }
+
+       return rx;
+}
+
+static int ep93xx_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       struct ep93xx_tdesc *txd;
+       int entry;
+
+       if (unlikely(skb->len > MAX_PKT_SIZE)) {
+               dev->stats.tx_dropped++;
+               dev_kfree_skb(skb);
+               return NETDEV_TX_OK;
+       }
+
+       entry = ep->tx_pointer;
+       ep->tx_pointer = (ep->tx_pointer + 1) & (TX_QUEUE_ENTRIES - 1);
+
+       txd = &ep->descs->tdesc[entry];
+
+       txd->tdesc1 = TDESC1_EOF | (entry << 16) | (skb->len & 0xfff);
+       dma_sync_single_for_cpu(dev->dev.parent, txd->buf_addr, skb->len,
+                               DMA_TO_DEVICE);
+       skb_copy_and_csum_dev(skb, ep->tx_buf[entry]);
+       dma_sync_single_for_device(dev->dev.parent, txd->buf_addr, skb->len,
+                                  DMA_TO_DEVICE);
+       dev_kfree_skb(skb);
+
+       spin_lock_irq(&ep->tx_pending_lock);
+       ep->tx_pending++;
+       if (ep->tx_pending == TX_QUEUE_ENTRIES)
+               netif_stop_queue(dev);
+       spin_unlock_irq(&ep->tx_pending_lock);
+
+       wrl(ep, REG_TXDENQ, 1);
+
+       return NETDEV_TX_OK;
+}
+
+static void ep93xx_tx_complete(struct net_device *dev)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       int wake;
+
+       wake = 0;
+
+       spin_lock(&ep->tx_pending_lock);
+       while (1) {
+               int entry;
+               struct ep93xx_tstat *tstat;
+               u32 tstat0;
+
+               entry = ep->tx_clean_pointer;
+               tstat = ep->descs->tstat + entry;
+
+               tstat0 = tstat->tstat0;
+               if (!(tstat0 & TSTAT0_TXFP))
+                       break;
+
+               tstat->tstat0 = 0;
+
+               if (tstat0 & TSTAT0_FA)
+                       pr_crit("frame aborted %.8x\n", tstat0);
+               if ((tstat0 & TSTAT0_BUFFER_INDEX) != entry)
+                       pr_crit("entry mismatch %.8x\n", tstat0);
+
+               if (tstat0 & TSTAT0_TXWE) {
+                       int length = ep->descs->tdesc[entry].tdesc1 & 0xfff;
+
+                       dev->stats.tx_packets++;
+                       dev->stats.tx_bytes += length;
+               } else {
+                       dev->stats.tx_errors++;
+               }
+
+               if (tstat0 & TSTAT0_OW)
+                       dev->stats.tx_window_errors++;
+               if (tstat0 & TSTAT0_TXU)
+                       dev->stats.tx_fifo_errors++;
+               dev->stats.collisions += (tstat0 >> 16) & 0x1f;
+
+               ep->tx_clean_pointer = (entry + 1) & (TX_QUEUE_ENTRIES - 1);
+               if (ep->tx_pending == TX_QUEUE_ENTRIES)
+                       wake = 1;
+               ep->tx_pending--;
+       }
+       spin_unlock(&ep->tx_pending_lock);
+
+       if (wake)
+               netif_wake_queue(dev);
+}
+
+static irqreturn_t ep93xx_irq(int irq, void *dev_id)
+{
+       struct net_device *dev = dev_id;
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       u32 status;
+
+       status = rdl(ep, REG_INTSTSC);
+       if (status == 0)
+               return IRQ_NONE;
+
+       if (status & REG_INTSTS_RX) {
+               spin_lock(&ep->rx_lock);
+               if (likely(napi_schedule_prep(&ep->napi))) {
+                       wrl(ep, REG_INTEN, REG_INTEN_TX);
+                       __napi_schedule(&ep->napi);
+               }
+               spin_unlock(&ep->rx_lock);
+       }
+
+       if (status & REG_INTSTS_TX)
+               ep93xx_tx_complete(dev);
+
+       return IRQ_HANDLED;
+}
+
+static void ep93xx_free_buffers(struct ep93xx_priv *ep)
+{
+       struct device *dev = ep->dev->dev.parent;
+       int i;
+
+       for (i = 0; i < RX_QUEUE_ENTRIES; i++) {
+               dma_addr_t d;
+
+               d = ep->descs->rdesc[i].buf_addr;
+               if (d)
+                       dma_unmap_single(dev, d, PKT_BUF_SIZE, DMA_FROM_DEVICE);
+
+               if (ep->rx_buf[i] != NULL)
+                       kfree(ep->rx_buf[i]);
+       }
+
+       for (i = 0; i < TX_QUEUE_ENTRIES; i++) {
+               dma_addr_t d;
+
+               d = ep->descs->tdesc[i].buf_addr;
+               if (d)
+                       dma_unmap_single(dev, d, PKT_BUF_SIZE, DMA_TO_DEVICE);
+
+               if (ep->tx_buf[i] != NULL)
+                       kfree(ep->tx_buf[i]);
+       }
+
+       dma_free_coherent(dev, sizeof(struct ep93xx_descs), ep->descs,
+                                                       ep->descs_dma_addr);
+}
+
+static int ep93xx_alloc_buffers(struct ep93xx_priv *ep)
+{
+       struct device *dev = ep->dev->dev.parent;
+       int i;
+
+       ep->descs = dma_alloc_coherent(dev, sizeof(struct ep93xx_descs),
+                               &ep->descs_dma_addr, GFP_KERNEL);
+       if (ep->descs == NULL)
+               return 1;
+
+       for (i = 0; i < RX_QUEUE_ENTRIES; i++) {
+               void *buf;
+               dma_addr_t d;
+
+               buf = kmalloc(PKT_BUF_SIZE, GFP_KERNEL);
+               if (buf == NULL)
+                       goto err;
+
+               d = dma_map_single(dev, buf, PKT_BUF_SIZE, DMA_FROM_DEVICE);
+               if (dma_mapping_error(dev, d)) {
+                       kfree(buf);
+                       goto err;
+               }
+
+               ep->rx_buf[i] = buf;
+               ep->descs->rdesc[i].buf_addr = d;
+               ep->descs->rdesc[i].rdesc1 = (i << 16) | PKT_BUF_SIZE;
+       }
+
+       for (i = 0; i < TX_QUEUE_ENTRIES; i++) {
+               void *buf;
+               dma_addr_t d;
+
+               buf = kmalloc(PKT_BUF_SIZE, GFP_KERNEL);
+               if (buf == NULL)
+                       goto err;
+
+               d = dma_map_single(dev, buf, PKT_BUF_SIZE, DMA_TO_DEVICE);
+               if (dma_mapping_error(dev, d)) {
+                       kfree(buf);
+                       goto err;
+               }
+
+               ep->tx_buf[i] = buf;
+               ep->descs->tdesc[i].buf_addr = d;
+       }
+
+       return 0;
+
+err:
+       ep93xx_free_buffers(ep);
+       return 1;
+}
+
+static int ep93xx_start_hw(struct net_device *dev)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       unsigned long addr;
+       int i;
+
+       wrl(ep, REG_SELFCTL, REG_SELFCTL_RESET);
+       for (i = 0; i < 10; i++) {
+               if ((rdl(ep, REG_SELFCTL) & REG_SELFCTL_RESET) == 0)
+                       break;
+               msleep(1);
+       }
+
+       if (i == 10) {
+               pr_crit("hw failed to reset\n");
+               return 1;
+       }
+
+       wrl(ep, REG_SELFCTL, ((ep->mdc_divisor - 1) << 9));
+
+       /* Does the PHY support preamble suppress?  */
+       if ((ep93xx_mdio_read(dev, ep->mii.phy_id, MII_BMSR) & 0x0040) != 0)
+               wrl(ep, REG_SELFCTL, ((ep->mdc_divisor - 1) << 9) | (1 << 8));
+
+       /* Receive descriptor ring.  */
+       addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, rdesc);
+       wrl(ep, REG_RXDQBADD, addr);
+       wrl(ep, REG_RXDCURADD, addr);
+       wrw(ep, REG_RXDQBLEN, RX_QUEUE_ENTRIES * sizeof(struct ep93xx_rdesc));
+
+       /* Receive status ring.  */
+       addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, rstat);
+       wrl(ep, REG_RXSTSQBADD, addr);
+       wrl(ep, REG_RXSTSQCURADD, addr);
+       wrw(ep, REG_RXSTSQBLEN, RX_QUEUE_ENTRIES * sizeof(struct ep93xx_rstat));
+
+       /* Transmit descriptor ring.  */
+       addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, tdesc);
+       wrl(ep, REG_TXDQBADD, addr);
+       wrl(ep, REG_TXDQCURADD, addr);
+       wrw(ep, REG_TXDQBLEN, TX_QUEUE_ENTRIES * sizeof(struct ep93xx_tdesc));
+
+       /* Transmit status ring.  */
+       addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, tstat);
+       wrl(ep, REG_TXSTSQBADD, addr);
+       wrl(ep, REG_TXSTSQCURADD, addr);
+       wrw(ep, REG_TXSTSQBLEN, TX_QUEUE_ENTRIES * sizeof(struct ep93xx_tstat));
+
+       wrl(ep, REG_BMCTL, REG_BMCTL_ENABLE_TX | REG_BMCTL_ENABLE_RX);
+       wrl(ep, REG_INTEN, REG_INTEN_TX | REG_INTEN_RX);
+       wrl(ep, REG_GIINTMSK, 0);
+
+       for (i = 0; i < 10; i++) {
+               if ((rdl(ep, REG_BMSTS) & REG_BMSTS_RX_ACTIVE) != 0)
+                       break;
+               msleep(1);
+       }
+
+       if (i == 10) {
+               pr_crit("hw failed to start\n");
+               return 1;
+       }
+
+       wrl(ep, REG_RXDENQ, RX_QUEUE_ENTRIES);
+       wrl(ep, REG_RXSTSENQ, RX_QUEUE_ENTRIES);
+
+       wrb(ep, REG_INDAD0, dev->dev_addr[0]);
+       wrb(ep, REG_INDAD1, dev->dev_addr[1]);
+       wrb(ep, REG_INDAD2, dev->dev_addr[2]);
+       wrb(ep, REG_INDAD3, dev->dev_addr[3]);
+       wrb(ep, REG_INDAD4, dev->dev_addr[4]);
+       wrb(ep, REG_INDAD5, dev->dev_addr[5]);
+       wrl(ep, REG_AFP, 0);
+
+       wrl(ep, REG_MAXFRMLEN, (MAX_PKT_SIZE << 16) | MAX_PKT_SIZE);
+
+       wrl(ep, REG_RXCTL, REG_RXCTL_DEFAULT);
+       wrl(ep, REG_TXCTL, REG_TXCTL_ENABLE);
+
+       return 0;
+}
+
+static void ep93xx_stop_hw(struct net_device *dev)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       int i;
+
+       wrl(ep, REG_SELFCTL, REG_SELFCTL_RESET);
+       for (i = 0; i < 10; i++) {
+               if ((rdl(ep, REG_SELFCTL) & REG_SELFCTL_RESET) == 0)
+                       break;
+               msleep(1);
+       }
+
+       if (i == 10)
+               pr_crit("hw failed to reset\n");
+}
+
+static int ep93xx_open(struct net_device *dev)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       int err;
+
+       if (ep93xx_alloc_buffers(ep))
+               return -ENOMEM;
+
+       napi_enable(&ep->napi);
+
+       if (ep93xx_start_hw(dev)) {
+               napi_disable(&ep->napi);
+               ep93xx_free_buffers(ep);
+               return -EIO;
+       }
+
+       spin_lock_init(&ep->rx_lock);
+       ep->rx_pointer = 0;
+       ep->tx_clean_pointer = 0;
+       ep->tx_pointer = 0;
+       spin_lock_init(&ep->tx_pending_lock);
+       ep->tx_pending = 0;
+
+       err = request_irq(ep->irq, ep93xx_irq, IRQF_SHARED, dev->name, dev);
+       if (err) {
+               napi_disable(&ep->napi);
+               ep93xx_stop_hw(dev);
+               ep93xx_free_buffers(ep);
+               return err;
+       }
+
+       wrl(ep, REG_GIINTMSK, REG_GIINTMSK_ENABLE);
+
+       netif_start_queue(dev);
+
+       return 0;
+}
+
+static int ep93xx_close(struct net_device *dev)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+
+       napi_disable(&ep->napi);
+       netif_stop_queue(dev);
+
+       wrl(ep, REG_GIINTMSK, 0);
+       free_irq(ep->irq, dev);
+       ep93xx_stop_hw(dev);
+       ep93xx_free_buffers(ep);
+
+       return 0;
+}
+
+static int ep93xx_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       struct mii_ioctl_data *data = if_mii(ifr);
+
+       return generic_mii_ioctl(&ep->mii, data, cmd, NULL);
+}
+
+static void ep93xx_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+       strcpy(info->driver, DRV_MODULE_NAME);
+       strcpy(info->version, DRV_MODULE_VERSION);
+}
+
+static int ep93xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       return mii_ethtool_gset(&ep->mii, cmd);
+}
+
+static int ep93xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       return mii_ethtool_sset(&ep->mii, cmd);
+}
+
+static int ep93xx_nway_reset(struct net_device *dev)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       return mii_nway_restart(&ep->mii);
+}
+
+static u32 ep93xx_get_link(struct net_device *dev)
+{
+       struct ep93xx_priv *ep = netdev_priv(dev);
+       return mii_link_ok(&ep->mii);
+}
+
+static const struct ethtool_ops ep93xx_ethtool_ops = {
+       .get_drvinfo            = ep93xx_get_drvinfo,
+       .get_settings           = ep93xx_get_settings,
+       .set_settings           = ep93xx_set_settings,
+       .nway_reset             = ep93xx_nway_reset,
+       .get_link               = ep93xx_get_link,
+};
+
+static const struct net_device_ops ep93xx_netdev_ops = {
+       .ndo_open               = ep93xx_open,
+       .ndo_stop               = ep93xx_close,
+       .ndo_start_xmit         = ep93xx_xmit,
+       .ndo_do_ioctl           = ep93xx_ioctl,
+       .ndo_validate_addr      = eth_validate_addr,
+       .ndo_change_mtu         = eth_change_mtu,
+       .ndo_set_mac_address    = eth_mac_addr,
+};
+
+static struct net_device *ep93xx_dev_alloc(struct ep93xx_eth_data *data)
+{
+       struct net_device *dev;
+
+       dev = alloc_etherdev(sizeof(struct ep93xx_priv));
+       if (dev == NULL)
+               return NULL;
+
+       memcpy(dev->dev_addr, data->dev_addr, ETH_ALEN);
+
+       dev->ethtool_ops = &ep93xx_ethtool_ops;
+       dev->netdev_ops = &ep93xx_netdev_ops;
+
+       dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
+
+       return dev;
+}
+
+
+static int ep93xx_eth_remove(struct platform_device *pdev)
+{
+       struct net_device *dev;
+       struct ep93xx_priv *ep;
+
+       dev = platform_get_drvdata(pdev);
+       if (dev == NULL)
+               return 0;
+       platform_set_drvdata(pdev, NULL);
+
+       ep = netdev_priv(dev);
+
+       /* @@@ Force down.  */
+       unregister_netdev(dev);
+       ep93xx_free_buffers(ep);
+
+       if (ep->base_addr != NULL)
+               iounmap(ep->base_addr);
+
+       if (ep->res != NULL) {
+               release_resource(ep->res);
+               kfree(ep->res);
+       }
+
+       free_netdev(dev);
+
+       return 0;
+}
+
+static int ep93xx_eth_probe(struct platform_device *pdev)
+{
+       struct ep93xx_eth_data *data;
+       struct net_device *dev;
+       struct ep93xx_priv *ep;
+       struct resource *mem;
+       int irq;
+       int err;
+
+       if (pdev == NULL)
+               return -ENODEV;
+       data = pdev->dev.platform_data;
+
+       mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       irq = platform_get_irq(pdev, 0);
+       if (!mem || irq < 0)
+               return -ENXIO;
+
+       dev = ep93xx_dev_alloc(data);
+       if (dev == NULL) {
+               err = -ENOMEM;
+               goto err_out;
+       }
+       ep = netdev_priv(dev);
+       ep->dev = dev;
+       SET_NETDEV_DEV(dev, &pdev->dev);
+       netif_napi_add(dev, &ep->napi, ep93xx_poll, 64);
+
+       platform_set_drvdata(pdev, dev);
+
+       ep->res = request_mem_region(mem->start, resource_size(mem),
+                                    dev_name(&pdev->dev));
+       if (ep->res == NULL) {
+               dev_err(&pdev->dev, "Could not reserve memory region\n");
+               err = -ENOMEM;
+               goto err_out;
+       }
+
+       ep->base_addr = ioremap(mem->start, resource_size(mem));
+       if (ep->base_addr == NULL) {
+               dev_err(&pdev->dev, "Failed to ioremap ethernet registers\n");
+               err = -EIO;
+               goto err_out;
+       }
+       ep->irq = irq;
+
+       ep->mii.phy_id = data->phy_id;
+       ep->mii.phy_id_mask = 0x1f;
+       ep->mii.reg_num_mask = 0x1f;
+       ep->mii.dev = dev;
+       ep->mii.mdio_read = ep93xx_mdio_read;
+       ep->mii.mdio_write = ep93xx_mdio_write;
+       ep->mdc_divisor = 40;   /* Max HCLK 100 MHz, min MDIO clk 2.5 MHz.  */
+
+       if (is_zero_ether_addr(dev->dev_addr))
+               random_ether_addr(dev->dev_addr);
+
+       err = register_netdev(dev);
+       if (err) {
+               dev_err(&pdev->dev, "Failed to register netdev\n");
+               goto err_out;
+       }
+
+       printk(KERN_INFO "%s: ep93xx on-chip ethernet, IRQ %d, %pM\n",
+                       dev->name, ep->irq, dev->dev_addr);
+
+       return 0;
+
+err_out:
+       ep93xx_eth_remove(pdev);
+       return err;
+}
+
+
+static struct platform_driver ep93xx_eth_driver = {
+       .probe          = ep93xx_eth_probe,
+       .remove         = ep93xx_eth_remove,
+       .driver         = {
+               .name   = "ep93xx-eth",
+               .owner  = THIS_MODULE,
+       },
+};
+
+static int __init ep93xx_eth_init_module(void)
+{
+       printk(KERN_INFO DRV_MODULE_NAME " version " DRV_MODULE_VERSION " loading\n");
+       return platform_driver_register(&ep93xx_eth_driver);
+}
+
+static void __exit ep93xx_eth_cleanup_module(void)
+{
+       platform_driver_unregister(&ep93xx_eth_driver);
+}
+
+module_init(ep93xx_eth_init_module);
+module_exit(ep93xx_eth_cleanup_module);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ep93xx-eth");