Logo Search packages:      
Sourcecode: linux version File versions  Download package

ps3_gelic_net.c

/*
 *  PS3 gelic network driver.
 *
 * Copyright (C) 2007 Sony Computer Entertainment Inc.
 * Copyright 2006, 2007 Sony Corporation
 *
 * This file is based on: spider_net.c
 *
 * (C) Copyright IBM Corp. 2005
 *
 * Authors : Utz Bacher <utz.bacher@de.ibm.com>
 *           Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
 *
 * 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, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#undef DEBUG

#include <linux/kernel.h>
#include <linux/module.h>

#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>

#include <linux/in.h>
#include <linux/ip.h>
#include <linux/tcp.h>

#include <linux/dma-mapping.h>
#include <net/checksum.h>
#include <asm/firmware.h>
#include <asm/ps3.h>
#include <asm/lv1call.h>

#include "ps3_gelic_net.h"

#define DRV_NAME "Gelic Network Driver"
#define DRV_VERSION "1.0"

MODULE_AUTHOR("SCE Inc.");
MODULE_DESCRIPTION("Gelic Network driver");
MODULE_LICENSE("GPL");

static inline struct device *ctodev(struct gelic_net_card *card)
{
      return &card->dev->core;
}
static inline unsigned int bus_id(struct gelic_net_card *card)
{
      return card->dev->bus_id;
}
static inline unsigned int dev_id(struct gelic_net_card *card)
{
      return card->dev->dev_id;
}

/* set irq_mask */
static int gelic_net_set_irq_mask(struct gelic_net_card *card, u64 mask)
{
      int status;

      status = lv1_net_set_interrupt_mask(bus_id(card), dev_id(card),
                                  mask, 0);
      if (status)
            dev_info(ctodev(card),
                   "lv1_net_set_interrupt_mask failed %d\n", status);
      return status;
}
static inline void gelic_net_rx_irq_on(struct gelic_net_card *card)
{
      gelic_net_set_irq_mask(card, card->ghiintmask | GELIC_NET_RXINT);
}
static inline void gelic_net_rx_irq_off(struct gelic_net_card *card)
{
      gelic_net_set_irq_mask(card, card->ghiintmask & ~GELIC_NET_RXINT);
}
/**
 * gelic_net_get_descr_status -- returns the status of a descriptor
 * @descr: descriptor to look at
 *
 * returns the status as in the dmac_cmd_status field of the descriptor
 */
static enum gelic_net_descr_status
gelic_net_get_descr_status(struct gelic_net_descr *descr)
{
      u32 cmd_status;

      cmd_status = descr->dmac_cmd_status;
      cmd_status >>= GELIC_NET_DESCR_IND_PROC_SHIFT;
      return cmd_status;
}

/**
 * gelic_net_set_descr_status -- sets the status of a descriptor
 * @descr: descriptor to change
 * @status: status to set in the descriptor
 *
 * changes the status to the specified value. Doesn't change other bits
 * in the status
 */
static void gelic_net_set_descr_status(struct gelic_net_descr *descr,
                               enum gelic_net_descr_status status)
{
      u32 cmd_status;

      /* read the status */
      cmd_status = descr->dmac_cmd_status;
      /* clean the upper 4 bits */
      cmd_status &= GELIC_NET_DESCR_IND_PROC_MASKO;
      /* add the status to it */
      cmd_status |= ((u32)status) << GELIC_NET_DESCR_IND_PROC_SHIFT;
      /* and write it back */
      descr->dmac_cmd_status = cmd_status;
      /*
       * dma_cmd_status field is used to indicate whether the descriptor
       * is valid or not.
       * Usually caller of this function wants to inform that to the
       * hardware, so we assure here the hardware sees the change.
       */
      wmb();
}

/**
 * gelic_net_free_chain - free descriptor chain
 * @card: card structure
 * @descr_in: address of desc
 */
static void gelic_net_free_chain(struct gelic_net_card *card,
                         struct gelic_net_descr *descr_in)
{
      struct gelic_net_descr *descr;

      for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) {
            dma_unmap_single(ctodev(card), descr->bus_addr,
                         GELIC_NET_DESCR_SIZE, DMA_BIDIRECTIONAL);
            descr->bus_addr = 0;
      }
}

/**
 * gelic_net_init_chain - links descriptor chain
 * @card: card structure
 * @chain: address of chain
 * @start_descr: address of descriptor array
 * @no: number of descriptors
 *
 * we manage a circular list that mirrors the hardware structure,
 * except that the hardware uses bus addresses.
 *
 * returns 0 on success, <0 on failure
 */
static int gelic_net_init_chain(struct gelic_net_card *card,
                        struct gelic_net_descr_chain *chain,
                        struct gelic_net_descr *start_descr, int no)
{
      int i;
      struct gelic_net_descr *descr;

      descr = start_descr;
      memset(descr, 0, sizeof(*descr) * no);

      /* set up the hardware pointers in each descriptor */
      for (i = 0; i < no; i++, descr++) {
            gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);
            descr->bus_addr =
                  dma_map_single(ctodev(card), descr,
                               GELIC_NET_DESCR_SIZE,
                               DMA_BIDIRECTIONAL);

            if (!descr->bus_addr)
                  goto iommu_error;

            descr->next = descr + 1;
            descr->prev = descr - 1;
      }
      /* make them as ring */
      (descr - 1)->next = start_descr;
      start_descr->prev = (descr - 1);

      /* chain bus addr of hw descriptor */
      descr = start_descr;
      for (i = 0; i < no; i++, descr++) {
            descr->next_descr_addr = descr->next->bus_addr;
      }

      chain->head = start_descr;
      chain->tail = start_descr;

      /* do not chain last hw descriptor */
      (descr - 1)->next_descr_addr = 0;

      return 0;

iommu_error:
      for (i--, descr--; 0 <= i; i--, descr--)
            if (descr->bus_addr)
                  dma_unmap_single(ctodev(card), descr->bus_addr,
                               GELIC_NET_DESCR_SIZE,
                               DMA_BIDIRECTIONAL);
      return -ENOMEM;
}

/**
 * gelic_net_prepare_rx_descr - reinitializes a rx descriptor
 * @card: card structure
 * @descr: descriptor to re-init
 *
 * return 0 on succes, <0 on failure
 *
 * allocates a new rx skb, iommu-maps it and attaches it to the descriptor.
 * Activate the descriptor state-wise
 */
static int gelic_net_prepare_rx_descr(struct gelic_net_card *card,
                              struct gelic_net_descr *descr)
{
      int offset;
      unsigned int bufsize;

      if (gelic_net_get_descr_status(descr) !=  GELIC_NET_DESCR_NOT_IN_USE) {
            dev_info(ctodev(card), "%s: ERROR status \n", __func__);
      }
      /* we need to round up the buffer size to a multiple of 128 */
      bufsize = ALIGN(GELIC_NET_MAX_MTU, GELIC_NET_RXBUF_ALIGN);

      /* and we need to have it 128 byte aligned, therefore we allocate a
       * bit more */
      descr->skb = netdev_alloc_skb(card->netdev,
            bufsize + GELIC_NET_RXBUF_ALIGN - 1);
      if (!descr->skb) {
            descr->buf_addr = 0; /* tell DMAC don't touch memory */
            dev_info(ctodev(card),
                   "%s:allocate skb failed !!\n", __func__);
            return -ENOMEM;
      }
      descr->buf_size = bufsize;
      descr->dmac_cmd_status = 0;
      descr->result_size = 0;
      descr->valid_size = 0;
      descr->data_error = 0;

      offset = ((unsigned long)descr->skb->data) &
            (GELIC_NET_RXBUF_ALIGN - 1);
      if (offset)
            skb_reserve(descr->skb, GELIC_NET_RXBUF_ALIGN - offset);
      /* io-mmu-map the skb */
      descr->buf_addr = dma_map_single(ctodev(card), descr->skb->data,
                               GELIC_NET_MAX_MTU,
                               DMA_FROM_DEVICE);
      if (!descr->buf_addr) {
            dev_kfree_skb_any(descr->skb);
            descr->skb = NULL;
            dev_info(ctodev(card),
                   "%s:Could not iommu-map rx buffer\n", __func__);
            gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);
            return -ENOMEM;
      } else {
            gelic_net_set_descr_status(descr, GELIC_NET_DESCR_CARDOWNED);
            return 0;
      }
}

/**
 * gelic_net_release_rx_chain - free all skb of rx descr
 * @card: card structure
 *
 */
static void gelic_net_release_rx_chain(struct gelic_net_card *card)
{
      struct gelic_net_descr *descr = card->rx_chain.head;

      do {
            if (descr->skb) {
                  dma_unmap_single(ctodev(card),
                               descr->buf_addr,
                               descr->skb->len,
                               DMA_FROM_DEVICE);
                  descr->buf_addr = 0;
                  dev_kfree_skb_any(descr->skb);
                  descr->skb = NULL;
                  gelic_net_set_descr_status(descr,
                                       GELIC_NET_DESCR_NOT_IN_USE);
            }
            descr = descr->next;
      } while (descr != card->rx_chain.head);
}

/**
 * gelic_net_fill_rx_chain - fills descriptors/skbs in the rx chains
 * @card: card structure
 *
 * fills all descriptors in the rx chain: allocates skbs
 * and iommu-maps them.
 * returns 0 on success, <0 on failure
 */
static int gelic_net_fill_rx_chain(struct gelic_net_card *card)
{
      struct gelic_net_descr *descr = card->rx_chain.head;
      int ret;

      do {
            if (!descr->skb) {
                  ret = gelic_net_prepare_rx_descr(card, descr);
                  if (ret)
                        goto rewind;
            }
            descr = descr->next;
      } while (descr != card->rx_chain.head);

      return 0;
rewind:
      gelic_net_release_rx_chain(card);
      return ret;
}

/**
 * gelic_net_alloc_rx_skbs - allocates rx skbs in rx descriptor chains
 * @card: card structure
 *
 * returns 0 on success, <0 on failure
 */
static int gelic_net_alloc_rx_skbs(struct gelic_net_card *card)
{
      struct gelic_net_descr_chain *chain;
      int ret;
      chain = &card->rx_chain;
      ret = gelic_net_fill_rx_chain(card);
      chain->head = card->rx_top->prev; /* point to the last */
      return ret;
}

/**
 * gelic_net_release_tx_descr - processes a used tx descriptor
 * @card: card structure
 * @descr: descriptor to release
 *
 * releases a used tx descriptor (unmapping, freeing of skb)
 */
static void gelic_net_release_tx_descr(struct gelic_net_card *card,
                      struct gelic_net_descr *descr)
{
      struct sk_buff *skb = descr->skb;

      BUG_ON(!(descr->data_status & (1 << GELIC_NET_TXDESC_TAIL)));

      dma_unmap_single(ctodev(card), descr->buf_addr, skb->len,
                   DMA_TO_DEVICE);
      dev_kfree_skb_any(skb);

      descr->buf_addr = 0;
      descr->buf_size = 0;
      descr->next_descr_addr = 0;
      descr->result_size = 0;
      descr->valid_size = 0;
      descr->data_status = 0;
      descr->data_error = 0;
      descr->skb = NULL;

      /* set descr status */
      gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);
}

/**
 * gelic_net_release_tx_chain - processes sent tx descriptors
 * @card: adapter structure
 * @stop: net_stop sequence
 *
 * releases the tx descriptors that gelic has finished with
 */
static void gelic_net_release_tx_chain(struct gelic_net_card *card, int stop)
{
      struct gelic_net_descr_chain *tx_chain;
      enum gelic_net_descr_status status;
      int release = 0;

      for (tx_chain = &card->tx_chain;
           tx_chain->head != tx_chain->tail && tx_chain->tail;
           tx_chain->tail = tx_chain->tail->next) {
            status = gelic_net_get_descr_status(tx_chain->tail);
            switch (status) {
            case GELIC_NET_DESCR_RESPONSE_ERROR:
            case GELIC_NET_DESCR_PROTECTION_ERROR:
            case GELIC_NET_DESCR_FORCE_END:
                  if (printk_ratelimit())
                        dev_info(ctodev(card),
                               "%s: forcing end of tx descriptor " \
                               "with status %x\n",
                               __func__, status);
                  card->netdev->stats.tx_dropped++;
                  break;

            case GELIC_NET_DESCR_COMPLETE:
                  if (tx_chain->tail->skb) {
                        card->netdev->stats.tx_packets++;
                        card->netdev->stats.tx_bytes +=
                              tx_chain->tail->skb->len;
                  }
                  break;

            case GELIC_NET_DESCR_CARDOWNED:
                  /* pending tx request */
            default:
                  /* any other value (== GELIC_NET_DESCR_NOT_IN_USE) */
                  if (!stop)
                        goto out;
            }
            gelic_net_release_tx_descr(card, tx_chain->tail);
            release ++;
      }
out:
      if (!stop && release)
            netif_wake_queue(card->netdev);
}

/**
 * gelic_net_set_multi - sets multicast addresses and promisc flags
 * @netdev: interface device structure
 *
 * gelic_net_set_multi configures multicast addresses as needed for the
 * netdev interface. It also sets up multicast, allmulti and promisc
 * flags appropriately
 */
static void gelic_net_set_multi(struct net_device *netdev)
{
      struct gelic_net_card *card = netdev_priv(netdev);
      struct dev_mc_list *mc;
      unsigned int i;
      uint8_t *p;
      u64 addr;
      int status;

      /* clear all multicast address */
      status = lv1_net_remove_multicast_address(bus_id(card), dev_id(card),
                                      0, 1);
      if (status)
            dev_err(ctodev(card),
                  "lv1_net_remove_multicast_address failed %d\n",
                  status);
      /* set broadcast address */
      status = lv1_net_add_multicast_address(bus_id(card), dev_id(card),
                                     GELIC_NET_BROADCAST_ADDR, 0);
      if (status)
            dev_err(ctodev(card),
                  "lv1_net_add_multicast_address failed, %d\n",
                  status);

      if (netdev->flags & IFF_ALLMULTI
            || netdev->mc_count > GELIC_NET_MC_COUNT_MAX) { /* list max */
            status = lv1_net_add_multicast_address(bus_id(card),
                                           dev_id(card),
                                           0, 1);
            if (status)
                  dev_err(ctodev(card),
                        "lv1_net_add_multicast_address failed, %d\n",
                        status);
            return;
      }

      /* set multicast address */
      for (mc = netdev->mc_list; mc; mc = mc->next) {
            addr = 0;
            p = mc->dmi_addr;
            for (i = 0; i < ETH_ALEN; i++) {
                  addr <<= 8;
                  addr |= *p++;
            }
            status = lv1_net_add_multicast_address(bus_id(card),
                                           dev_id(card),
                                           addr, 0);
            if (status)
                  dev_err(ctodev(card),
                        "lv1_net_add_multicast_address failed, %d\n",
                        status);
      }
}

/**
 * gelic_net_enable_rxdmac - enables the receive DMA controller
 * @card: card structure
 *
 * gelic_net_enable_rxdmac enables the DMA controller by setting RX_DMA_EN
 * in the GDADMACCNTR register
 */
static inline void gelic_net_enable_rxdmac(struct gelic_net_card *card)
{
      int status;

      status = lv1_net_start_rx_dma(bus_id(card), dev_id(card),
                        card->rx_chain.tail->bus_addr, 0);
      if (status)
            dev_info(ctodev(card),
                   "lv1_net_start_rx_dma failed, status=%d\n", status);
}

/**
 * gelic_net_disable_rxdmac - disables the receive DMA controller
 * @card: card structure
 *
 * gelic_net_disable_rxdmac terminates processing on the DMA controller by
 * turing off DMA and issueing a force end
 */
static inline void gelic_net_disable_rxdmac(struct gelic_net_card *card)
{
      int status;

      /* this hvc blocks until the DMA in progress really stopped */
      status = lv1_net_stop_rx_dma(bus_id(card), dev_id(card), 0);
      if (status)
            dev_err(ctodev(card),
                  "lv1_net_stop_rx_dma faild, %d\n", status);
}

/**
 * gelic_net_disable_txdmac - disables the transmit DMA controller
 * @card: card structure
 *
 * gelic_net_disable_txdmac terminates processing on the DMA controller by
 * turing off DMA and issueing a force end
 */
static inline void gelic_net_disable_txdmac(struct gelic_net_card *card)
{
      int status;

      /* this hvc blocks until the DMA in progress really stopped */
      status = lv1_net_stop_tx_dma(bus_id(card), dev_id(card), 0);
      if (status)
            dev_err(ctodev(card),
                  "lv1_net_stop_tx_dma faild, status=%d\n", status);
}

/**
 * gelic_net_stop - called upon ifconfig down
 * @netdev: interface device structure
 *
 * always returns 0
 */
static int gelic_net_stop(struct net_device *netdev)
{
      struct gelic_net_card *card = netdev_priv(netdev);

      napi_disable(&card->napi);
      netif_stop_queue(netdev);

      /* turn off DMA, force end */
      gelic_net_disable_rxdmac(card);
      gelic_net_disable_txdmac(card);

      gelic_net_set_irq_mask(card, 0);

      /* disconnect event port */
      free_irq(card->netdev->irq, card->netdev);
      ps3_sb_event_receive_port_destroy(card->dev, card->netdev->irq);
      card->netdev->irq = NO_IRQ;

      netif_carrier_off(netdev);

      /* release chains */
      gelic_net_release_tx_chain(card, 1);
      gelic_net_release_rx_chain(card);

      gelic_net_free_chain(card, card->tx_top);
      gelic_net_free_chain(card, card->rx_top);

      return 0;
}

/**
 * gelic_net_get_next_tx_descr - returns the next available tx descriptor
 * @card: device structure to get descriptor from
 *
 * returns the address of the next descriptor, or NULL if not available.
 */
static struct gelic_net_descr *
gelic_net_get_next_tx_descr(struct gelic_net_card *card)
{
      if (!card->tx_chain.head)
            return NULL;
      /*  see if the next descriptor is free */
      if (card->tx_chain.tail != card->tx_chain.head->next &&
          gelic_net_get_descr_status(card->tx_chain.head) ==
          GELIC_NET_DESCR_NOT_IN_USE)
            return card->tx_chain.head;
      else
            return NULL;

}

/**
 * gelic_net_set_txdescr_cmdstat - sets the tx descriptor command field
 * @descr: descriptor structure to fill out
 * @skb: packet to consider
 *
 * fills out the command and status field of the descriptor structure,
 * depending on hardware checksum settings. This function assumes a wmb()
 * has executed before.
 */
static void gelic_net_set_txdescr_cmdstat(struct gelic_net_descr *descr,
                                struct sk_buff *skb)
{
      if (skb->ip_summed != CHECKSUM_PARTIAL)
            descr->dmac_cmd_status = GELIC_NET_DMAC_CMDSTAT_NOCS |
                  GELIC_NET_DMAC_CMDSTAT_END_FRAME;
      else {
            /* is packet ip?
             * if yes: tcp? udp? */
            if (skb->protocol == htons(ETH_P_IP)) {
                  if (ip_hdr(skb)->protocol == IPPROTO_TCP)
                        descr->dmac_cmd_status =
                              GELIC_NET_DMAC_CMDSTAT_TCPCS |
                              GELIC_NET_DMAC_CMDSTAT_END_FRAME;

                  else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
                        descr->dmac_cmd_status =
                              GELIC_NET_DMAC_CMDSTAT_UDPCS |
                              GELIC_NET_DMAC_CMDSTAT_END_FRAME;
                  else  /*
                         * the stack should checksum non-tcp and non-udp
                         * packets on his own: NETIF_F_IP_CSUM
                         */
                        descr->dmac_cmd_status =
                              GELIC_NET_DMAC_CMDSTAT_NOCS |
                              GELIC_NET_DMAC_CMDSTAT_END_FRAME;
            }
      }
}

static inline struct sk_buff *gelic_put_vlan_tag(struct sk_buff *skb,
                                     unsigned short tag)
{
      struct vlan_ethhdr *veth;
      static unsigned int c;

      if (skb_headroom(skb) < VLAN_HLEN) {
            struct sk_buff *sk_tmp = skb;
            pr_debug("%s: hd=%d c=%ud\n", __func__, skb_headroom(skb), c);
            skb = skb_realloc_headroom(sk_tmp, VLAN_HLEN);
            if (!skb)
                  return NULL;
            dev_kfree_skb_any(sk_tmp);
      }
      veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN);

      /* Move the mac addresses to the top of buffer */
      memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN);

      veth->h_vlan_proto = __constant_htons(ETH_P_8021Q);
      veth->h_vlan_TCI = htons(tag);

      return skb;
}

/**
 * gelic_net_prepare_tx_descr_v - get dma address of skb_data
 * @card: card structure
 * @descr: descriptor structure
 * @skb: packet to use
 *
 * returns 0 on success, <0 on failure.
 *
 */
static int gelic_net_prepare_tx_descr_v(struct gelic_net_card *card,
                              struct gelic_net_descr *descr,
                              struct sk_buff *skb)
{
      dma_addr_t buf;

      if (card->vlan_index != -1) {
            struct sk_buff *skb_tmp;
            skb_tmp = gelic_put_vlan_tag(skb,
                                   card->vlan_id[card->vlan_index]);
            if (!skb_tmp)
                  return -ENOMEM;
            skb = skb_tmp;
      }

      buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE);

      if (!buf) {
            dev_err(ctodev(card),
                  "dma map 2 failed (%p, %i). Dropping packet\n",
                  skb->data, skb->len);
            return -ENOMEM;
      }

      descr->buf_addr = buf;
      descr->buf_size = skb->len;
      descr->skb = skb;
      descr->data_status = 0;
      descr->next_descr_addr = 0; /* terminate hw descr */
      gelic_net_set_txdescr_cmdstat(descr, skb);

      /* bump free descriptor pointer */
      card->tx_chain.head = descr->next;
      return 0;
}

/**
 * gelic_net_kick_txdma - enables TX DMA processing
 * @card: card structure
 * @descr: descriptor address to enable TX processing at
 *
 */
static int gelic_net_kick_txdma(struct gelic_net_card *card,
                        struct gelic_net_descr *descr)
{
      int status = 0;

      if (card->tx_dma_progress)
            return 0;

      if (gelic_net_get_descr_status(descr) == GELIC_NET_DESCR_CARDOWNED) {
            card->tx_dma_progress = 1;
            status = lv1_net_start_tx_dma(bus_id(card), dev_id(card),
                                    descr->bus_addr, 0);
            if (status)
                  dev_info(ctodev(card), "lv1_net_start_txdma failed," \
                         "status=%d\n", status);
      }
      return status;
}

/**
 * gelic_net_xmit - transmits a frame over the device
 * @skb: packet to send out
 * @netdev: interface device structure
 *
 * returns 0 on success, <0 on failure
 */
static int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev)
{
      struct gelic_net_card *card = netdev_priv(netdev);
      struct gelic_net_descr *descr;
      int result;
      unsigned long flags;

      spin_lock_irqsave(&card->tx_dma_lock, flags);

      gelic_net_release_tx_chain(card, 0);

      descr = gelic_net_get_next_tx_descr(card);
      if (!descr) {
            /*
             * no more descriptors free
             */
            netif_stop_queue(netdev);
            spin_unlock_irqrestore(&card->tx_dma_lock, flags);
            return NETDEV_TX_BUSY;
      }

      result = gelic_net_prepare_tx_descr_v(card, descr, skb);
      if (result) {
            /*
             * DMA map failed.  As chanses are that failure
             * would continue, just release skb and return
             */
            card->netdev->stats.tx_dropped++;
            dev_kfree_skb_any(skb);
            spin_unlock_irqrestore(&card->tx_dma_lock, flags);
            return NETDEV_TX_OK;
      }
      /*
       * link this prepared descriptor to previous one
       * to achieve high performance
       */
      descr->prev->next_descr_addr = descr->bus_addr;
      /*
       * as hardware descriptor is modified in the above lines,
       * ensure that the hardware sees it
       */
      wmb();
      if (gelic_net_kick_txdma(card, descr)) {
            /*
             * kick failed.
             * release descriptors which were just prepared
             */
            card->netdev->stats.tx_dropped++;
            gelic_net_release_tx_descr(card, descr);
            gelic_net_release_tx_descr(card, descr->next);
            card->tx_chain.tail = descr->next->next;
            dev_info(ctodev(card), "%s: kick failure\n", __func__);
      } else {
            /* OK, DMA started/reserved */
            netdev->trans_start = jiffies;
      }

      spin_unlock_irqrestore(&card->tx_dma_lock, flags);
      return NETDEV_TX_OK;
}

/**
 * gelic_net_pass_skb_up - takes an skb from a descriptor and passes it on
 * @descr: descriptor to process
 * @card: card structure
 *
 * iommu-unmaps the skb, fills out skb structure and passes the data to the
 * stack. The descriptor state is not changed.
 */
static void gelic_net_pass_skb_up(struct gelic_net_descr *descr,
                         struct gelic_net_card *card)
{
      struct sk_buff *skb;
      struct net_device *netdev;
      u32 data_status, data_error;

      data_status = descr->data_status;
      data_error = descr->data_error;
      netdev = card->netdev;
      /* unmap skb buffer */
      skb = descr->skb;
      dma_unmap_single(ctodev(card), descr->buf_addr, GELIC_NET_MAX_MTU,
                   DMA_FROM_DEVICE);

      skb_put(skb, descr->valid_size? descr->valid_size : descr->result_size);
      if (!descr->valid_size)
            dev_info(ctodev(card), "buffer full %x %x %x\n",
                   descr->result_size, descr->buf_size,
                   descr->dmac_cmd_status);

      descr->skb = NULL;
      /*
       * the card put 2 bytes vlan tag in front
       * of the ethernet frame
       */
      skb_pull(skb, 2);
      skb->protocol = eth_type_trans(skb, netdev);

      /* checksum offload */
      if (card->rx_csum) {
            if ((data_status & GELIC_NET_DATA_STATUS_CHK_MASK) &&
                (!(data_error & GELIC_NET_DATA_ERROR_CHK_MASK)))
                  skb->ip_summed = CHECKSUM_UNNECESSARY;
            else
                  skb->ip_summed = CHECKSUM_NONE;
      } else
            skb->ip_summed = CHECKSUM_NONE;

      /* update netdevice statistics */
      card->netdev->stats.rx_packets++;
      card->netdev->stats.rx_bytes += skb->len;

      /* pass skb up to stack */
      netif_receive_skb(skb);
}

/**
 * gelic_net_decode_one_descr - processes an rx descriptor
 * @card: card structure
 *
 * returns 1 if a packet has been sent to the stack, otherwise 0
 *
 * processes an rx descriptor by iommu-unmapping the data buffer and passing
 * the packet up to the stack
 */
static int gelic_net_decode_one_descr(struct gelic_net_card *card)
{
      enum gelic_net_descr_status status;
      struct gelic_net_descr_chain *chain = &card->rx_chain;
      struct gelic_net_descr *descr = chain->tail;
      int dmac_chain_ended;

      status = gelic_net_get_descr_status(descr);
      /* is this descriptor terminated with next_descr == NULL? */
      dmac_chain_ended =
            descr->dmac_cmd_status & GELIC_NET_DMAC_CMDSTAT_RXDCEIS;

      if (status == GELIC_NET_DESCR_CARDOWNED)
            return 0;

      if (status == GELIC_NET_DESCR_NOT_IN_USE) {
            dev_dbg(ctodev(card), "dormant descr? %p\n", descr);
            return 0;
      }

      if ((status == GELIC_NET_DESCR_RESPONSE_ERROR) ||
          (status == GELIC_NET_DESCR_PROTECTION_ERROR) ||
          (status == GELIC_NET_DESCR_FORCE_END)) {
            dev_info(ctodev(card), "dropping RX descriptor with state %x\n",
                   status);
            card->netdev->stats.rx_dropped++;
            goto refill;
      }

      if (status == GELIC_NET_DESCR_BUFFER_FULL) {
            /*
             * Buffer full would occur if and only if
             * the frame length was longer than the size of this
             * descriptor's buffer.  If the frame length was equal
             * to or shorter than buffer'size, FRAME_END condition
             * would occur.
             * Anyway this frame was longer than the MTU,
             * just drop it.
             */
            dev_info(ctodev(card), "overlength frame\n");
            goto refill;
      }
      /*
       * descriptoers any other than FRAME_END here should
       * be treated as error.
       */
      if (status != GELIC_NET_DESCR_FRAME_END) {
            dev_dbg(ctodev(card), "RX descriptor with state %x\n",
                  status);
            goto refill;
      }

      /* ok, we've got a packet in descr */
      gelic_net_pass_skb_up(descr, card);
refill:
      /*
       * So that always DMAC can see the end
       * of the descriptor chain to avoid
       * from unwanted DMAC overrun.
       */
      descr->next_descr_addr = 0;

      /* change the descriptor state: */
      gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);

      /*
       * this call can fail, but for now, just leave this
       * decriptor without skb
       */
      gelic_net_prepare_rx_descr(card, descr);

      chain->head = descr;
      chain->tail = descr->next;

      /*
       * Set this descriptor the end of the chain.
       */
      descr->prev->next_descr_addr = descr->bus_addr;

      /*
       * If dmac chain was met, DMAC stopped.
       * thus re-enable it
       */
      if (dmac_chain_ended) {
            card->rx_dma_restart_required = 1;
            dev_dbg(ctodev(card), "reenable rx dma scheduled\n");
      }

      return 1;
}

/**
 * gelic_net_poll - NAPI poll function called by the stack to return packets
 * @netdev: interface device structure
 * @budget: number of packets we can pass to the stack at most
 *
 * returns 0 if no more packets available to the driver/stack. Returns 1,
 * if the quota is exceeded, but the driver has still packets.
 *
 */
static int gelic_net_poll(struct napi_struct *napi, int budget)
{
      struct gelic_net_card *card = container_of(napi, struct gelic_net_card, napi);
      struct net_device *netdev = card->netdev;
      int packets_done = 0;

      while (packets_done < budget) {
            if (!gelic_net_decode_one_descr(card))
                  break;

            packets_done++;
      }

      if (packets_done < budget) {
            netif_rx_complete(netdev, napi);
            gelic_net_rx_irq_on(card);
      }
      return packets_done;
}
/**
 * gelic_net_change_mtu - changes the MTU of an interface
 * @netdev: interface device structure
 * @new_mtu: new MTU value
 *
 * returns 0 on success, <0 on failure
 */
static int gelic_net_change_mtu(struct net_device *netdev, int new_mtu)
{
      /* no need to re-alloc skbs or so -- the max mtu is about 2.3k
       * and mtu is outbound only anyway */
      if ((new_mtu < GELIC_NET_MIN_MTU) ||
          (new_mtu > GELIC_NET_MAX_MTU)) {
            return -EINVAL;
      }
      netdev->mtu = new_mtu;
      return 0;
}

/**
 * gelic_net_interrupt - event handler for gelic_net
 */
static irqreturn_t gelic_net_interrupt(int irq, void *ptr)
{
      unsigned long flags;
      struct net_device *netdev = ptr;
      struct gelic_net_card *card = netdev_priv(netdev);
      u64 status;

      status = card->irq_status;

      if (!status)
            return IRQ_NONE;

      if (card->rx_dma_restart_required) {
            card->rx_dma_restart_required = 0;
            gelic_net_enable_rxdmac(card);
      }

      if (status & GELIC_NET_RXINT) {
            gelic_net_rx_irq_off(card);
            netif_rx_schedule(netdev, &card->napi);
      }

      if (status & GELIC_NET_TXINT) {
            spin_lock_irqsave(&card->tx_dma_lock, flags);
            card->tx_dma_progress = 0;
            gelic_net_release_tx_chain(card, 0);
            /* kick outstanding tx descriptor if any */
            gelic_net_kick_txdma(card, card->tx_chain.tail);
            spin_unlock_irqrestore(&card->tx_dma_lock, flags);
      }
      return IRQ_HANDLED;
}

#ifdef CONFIG_NET_POLL_CONTROLLER
/**
 * gelic_net_poll_controller - artificial interrupt for netconsole etc.
 * @netdev: interface device structure
 *
 * see Documentation/networking/netconsole.txt
 */
static void gelic_net_poll_controller(struct net_device *netdev)
{
      struct gelic_net_card *card = netdev_priv(netdev);

      gelic_net_set_irq_mask(card, 0);
      gelic_net_interrupt(netdev->irq, netdev);
      gelic_net_set_irq_mask(card, card->ghiintmask);
}
#endif /* CONFIG_NET_POLL_CONTROLLER */

/**
 * gelic_net_open_device - open device and map dma region
 * @card: card structure
 */
static int gelic_net_open_device(struct gelic_net_card *card)
{
      int result;

      result = ps3_sb_event_receive_port_setup(card->dev, PS3_BINDING_CPU_ANY,
            &card->netdev->irq);

      if (result) {
            dev_info(ctodev(card),
                   "%s:%d: gelic_net_open_device failed (%d)\n",
                   __func__, __LINE__, result);
            result = -EPERM;
            goto fail_alloc_irq;
      }

      result = request_irq(card->netdev->irq, gelic_net_interrupt,
                       IRQF_DISABLED, card->netdev->name, card->netdev);

      if (result) {
            dev_info(ctodev(card), "%s:%d: request_irq failed (%d)\n",
                  __func__, __LINE__, result);
            goto fail_request_irq;
      }

      return 0;

fail_request_irq:
      ps3_sb_event_receive_port_destroy(card->dev, card->netdev->irq);
      card->netdev->irq = NO_IRQ;
fail_alloc_irq:
      return result;
}


/**
 * gelic_net_open - called upon ifonfig up
 * @netdev: interface device structure
 *
 * returns 0 on success, <0 on failure
 *
 * gelic_net_open allocates all the descriptors and memory needed for
 * operation, sets up multicast list and enables interrupts
 */
static int gelic_net_open(struct net_device *netdev)
{
      struct gelic_net_card *card = netdev_priv(netdev);

      dev_dbg(ctodev(card), " -> %s:%d\n", __func__, __LINE__);

      gelic_net_open_device(card);

      if (gelic_net_init_chain(card, &card->tx_chain,
                  card->descr, GELIC_NET_TX_DESCRIPTORS))
            goto alloc_tx_failed;
      if (gelic_net_init_chain(card, &card->rx_chain,
                         card->descr + GELIC_NET_TX_DESCRIPTORS,
                         GELIC_NET_RX_DESCRIPTORS))
            goto alloc_rx_failed;

      /* head of chain */
      card->tx_top = card->tx_chain.head;
      card->rx_top = card->rx_chain.head;
      dev_dbg(ctodev(card), "descr rx %p, tx %p, size %#lx, num %#x\n",
            card->rx_top, card->tx_top, sizeof(struct gelic_net_descr),
            GELIC_NET_RX_DESCRIPTORS);
      /* allocate rx skbs */
      if (gelic_net_alloc_rx_skbs(card))
            goto alloc_skbs_failed;

      napi_enable(&card->napi);

      card->tx_dma_progress = 0;
      card->ghiintmask = GELIC_NET_RXINT | GELIC_NET_TXINT;

      gelic_net_set_irq_mask(card, card->ghiintmask);
      gelic_net_enable_rxdmac(card);

      netif_start_queue(netdev);
      netif_carrier_on(netdev);

      return 0;

alloc_skbs_failed:
      gelic_net_free_chain(card, card->rx_top);
alloc_rx_failed:
      gelic_net_free_chain(card, card->tx_top);
alloc_tx_failed:
      return -ENOMEM;
}

static void gelic_net_get_drvinfo (struct net_device *netdev,
                           struct ethtool_drvinfo *info)
{
      strncpy(info->driver, DRV_NAME, sizeof(info->driver) - 1);
      strncpy(info->version, DRV_VERSION, sizeof(info->version) - 1);
}

static int gelic_net_get_settings(struct net_device *netdev,
                          struct ethtool_cmd *cmd)
{
      struct gelic_net_card *card = netdev_priv(netdev);
      int status;
      u64 v1, v2;
      int speed, duplex;

      speed = duplex = -1;
      status = lv1_net_control(bus_id(card), dev_id(card),
                  GELIC_NET_GET_ETH_PORT_STATUS, GELIC_NET_PORT, 0, 0,
                  &v1, &v2);
      if (status) {
            /* link down */
      } else {
            if (v1 & GELIC_NET_FULL_DUPLEX) {
                  duplex = DUPLEX_FULL;
            } else {
                  duplex = DUPLEX_HALF;
            }

            if (v1 & GELIC_NET_SPEED_10 ) {
                  speed = SPEED_10;
            } else if (v1 & GELIC_NET_SPEED_100) {
                  speed = SPEED_100;
            } else if (v1 & GELIC_NET_SPEED_1000) {
                  speed = SPEED_1000;
            }
      }
      cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg |
                  SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
                  SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
                  SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
      cmd->advertising = cmd->supported;
      cmd->speed = speed;
      cmd->duplex = duplex;
      cmd->autoneg = AUTONEG_ENABLE; /* always enabled */
      cmd->port = PORT_TP;

      return 0;
}

static u32 gelic_net_get_link(struct net_device *netdev)
{
      struct gelic_net_card *card = netdev_priv(netdev);
      int status;
      u64 v1, v2;
      int link;

      status = lv1_net_control(bus_id(card), dev_id(card),
                  GELIC_NET_GET_ETH_PORT_STATUS, GELIC_NET_PORT, 0, 0,
                  &v1, &v2);
      if (status)
            return 0; /* link down */

      if (v1 & GELIC_NET_LINK_UP)
            link = 1;
      else
            link = 0;

      return link;
}

static int gelic_net_nway_reset(struct net_device *netdev)
{
      if (netif_running(netdev)) {
            gelic_net_stop(netdev);
            gelic_net_open(netdev);
      }
      return 0;
}

static u32 gelic_net_get_tx_csum(struct net_device *netdev)
{
      return (netdev->features & NETIF_F_IP_CSUM) != 0;
}

static int gelic_net_set_tx_csum(struct net_device *netdev, u32 data)
{
      if (data)
            netdev->features |= NETIF_F_IP_CSUM;
      else
            netdev->features &= ~NETIF_F_IP_CSUM;

      return 0;
}

static u32 gelic_net_get_rx_csum(struct net_device *netdev)
{
      struct gelic_net_card *card = netdev_priv(netdev);

      return card->rx_csum;
}

static int gelic_net_set_rx_csum(struct net_device *netdev, u32 data)
{
      struct gelic_net_card *card = netdev_priv(netdev);

      card->rx_csum = data;
      return 0;
}

static struct ethtool_ops gelic_net_ethtool_ops = {
      .get_drvinfo      = gelic_net_get_drvinfo,
      .get_settings     = gelic_net_get_settings,
      .get_link   = gelic_net_get_link,
      .nway_reset = gelic_net_nway_reset,
      .get_tx_csum      = gelic_net_get_tx_csum,
      .set_tx_csum      = gelic_net_set_tx_csum,
      .get_rx_csum      = gelic_net_get_rx_csum,
      .set_rx_csum      = gelic_net_set_rx_csum,
};

/**
 * gelic_net_tx_timeout_task - task scheduled by the watchdog timeout
 * function (to be called not under interrupt status)
 * @work: work is context of tx timout task
 *
 * called as task when tx hangs, resets interface (if interface is up)
 */
static void gelic_net_tx_timeout_task(struct work_struct *work)
{
      struct gelic_net_card *card =
            container_of(work, struct gelic_net_card, tx_timeout_task);
      struct net_device *netdev = card->netdev;

      dev_info(ctodev(card), "%s:Timed out. Restarting... \n", __func__);

      if (!(netdev->flags & IFF_UP))
            goto out;

      netif_device_detach(netdev);
      gelic_net_stop(netdev);

      gelic_net_open(netdev);
      netif_device_attach(netdev);

out:
      atomic_dec(&card->tx_timeout_task_counter);
}

/**
 * gelic_net_tx_timeout - called when the tx timeout watchdog kicks in.
 * @netdev: interface device structure
 *
 * called, if tx hangs. Schedules a task that resets the interface
 */
static void gelic_net_tx_timeout(struct net_device *netdev)
{
      struct gelic_net_card *card;

      card = netdev_priv(netdev);
      atomic_inc(&card->tx_timeout_task_counter);
      if (netdev->flags & IFF_UP)
            schedule_work(&card->tx_timeout_task);
      else
            atomic_dec(&card->tx_timeout_task_counter);
}

/**
 * gelic_net_setup_netdev_ops - initialization of net_device operations
 * @netdev: net_device structure
 *
 * fills out function pointers in the net_device structure
 */
static void gelic_net_setup_netdev_ops(struct net_device *netdev)
{
      netdev->open = &gelic_net_open;
      netdev->stop = &gelic_net_stop;
      netdev->hard_start_xmit = &gelic_net_xmit;
      netdev->set_multicast_list = &gelic_net_set_multi;
      netdev->change_mtu = &gelic_net_change_mtu;
      /* tx watchdog */
      netdev->tx_timeout = &gelic_net_tx_timeout;
      netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT;
      netdev->ethtool_ops = &gelic_net_ethtool_ops;
}

/**
 * gelic_net_setup_netdev - initialization of net_device
 * @card: card structure
 *
 * Returns 0 on success or <0 on failure
 *
 * gelic_net_setup_netdev initializes the net_device structure
 **/
static int gelic_net_setup_netdev(struct gelic_net_card *card)
{
      struct net_device *netdev = card->netdev;
      struct sockaddr addr;
      unsigned int i;
      int status;
      u64 v1, v2;
      DECLARE_MAC_BUF(mac);

      SET_NETDEV_DEV(netdev, &card->dev->core);
      spin_lock_init(&card->tx_dma_lock);

      card->rx_csum = GELIC_NET_RX_CSUM_DEFAULT;

      gelic_net_setup_netdev_ops(netdev);

      netif_napi_add(netdev, &card->napi,
                   gelic_net_poll, GELIC_NET_NAPI_WEIGHT);

      netdev->features = NETIF_F_IP_CSUM;

      status = lv1_net_control(bus_id(card), dev_id(card),
                         GELIC_NET_GET_MAC_ADDRESS,
                         0, 0, 0, &v1, &v2);
      if (status || !is_valid_ether_addr((u8 *)&v1)) {
            dev_info(ctodev(card),
                   "%s:lv1_net_control GET_MAC_ADDR failed %d\n",
                   __func__, status);
            return -EINVAL;
      }
      v1 <<= 16;
      memcpy(addr.sa_data, &v1, ETH_ALEN);
      memcpy(netdev->dev_addr, addr.sa_data, ETH_ALEN);
      dev_info(ctodev(card), "MAC addr %s\n",
             print_mac(mac, netdev->dev_addr));

      card->vlan_index = -1;  /* no vlan */
      for (i = 0; i < GELIC_NET_VLAN_MAX; i++) {
            status = lv1_net_control(bus_id(card), dev_id(card),
                              GELIC_NET_GET_VLAN_ID,
                              i + 1, /* index; one based */
                              0, 0, &v1, &v2);
            if (status == GELIC_NET_VLAN_NO_ENTRY) {
                  dev_dbg(ctodev(card),
                        "GELIC_VLAN_ID no entry:%d, VLAN disabled\n",
                        status);
                  card->vlan_id[i] = 0;
            } else if (status) {
                  dev_dbg(ctodev(card),
                        "%s:GELIC_NET_VLAN_ID faild, status=%d\n",
                        __func__, status);
                  card->vlan_id[i] = 0;
            } else {
                  card->vlan_id[i] = (u32)v1;
                  dev_dbg(ctodev(card), "vlan_id:%d, %lx\n", i, v1);
            }
      }

      if (card->vlan_id[GELIC_NET_VLAN_WIRED - 1]) {
            card->vlan_index = GELIC_NET_VLAN_WIRED - 1;
            netdev->hard_header_len += VLAN_HLEN;
      }

      status = register_netdev(netdev);
      if (status) {
            dev_err(ctodev(card), "%s:Couldn't register net_device: %d\n",
                  __func__, status);
            return status;
      }

      return 0;
}

/**
 * gelic_net_alloc_card - allocates net_device and card structure
 *
 * returns the card structure or NULL in case of errors
 *
 * the card and net_device structures are linked to each other
 */
static struct gelic_net_card *gelic_net_alloc_card(void)
{
      struct net_device *netdev;
      struct gelic_net_card *card;
      size_t alloc_size;

      alloc_size = sizeof (*card) +
            sizeof (struct gelic_net_descr) * GELIC_NET_RX_DESCRIPTORS +
            sizeof (struct gelic_net_descr) * GELIC_NET_TX_DESCRIPTORS;
      /*
       * we assume private data is allocated 32 bytes (or more) aligned
       * so that gelic_net_descr should be 32 bytes aligned.
       * Current alloc_etherdev() does do it because NETDEV_ALIGN
       * is 32.
       * check this assumption here.
       */
      BUILD_BUG_ON(NETDEV_ALIGN < 32);
      BUILD_BUG_ON(offsetof(struct gelic_net_card, irq_status) % 8);
      BUILD_BUG_ON(offsetof(struct gelic_net_card, descr) % 32);

      netdev = alloc_etherdev(alloc_size);
      if (!netdev)
            return NULL;

      card = netdev_priv(netdev);
      card->netdev = netdev;
      INIT_WORK(&card->tx_timeout_task, gelic_net_tx_timeout_task);
      init_waitqueue_head(&card->waitq);
      atomic_set(&card->tx_timeout_task_counter, 0);

      return card;
}

/**
 * ps3_gelic_driver_probe - add a device to the control of this driver
 */
static int ps3_gelic_driver_probe (struct ps3_system_bus_device *dev)
{
      struct gelic_net_card *card = gelic_net_alloc_card();
      int result;

      if (!card) {
            dev_info(&dev->core, "gelic_net_alloc_card failed\n");
            result = -ENOMEM;
            goto fail_alloc_card;
      }

      ps3_system_bus_set_driver_data(dev, card);
      card->dev = dev;

      result = ps3_open_hv_device(dev);

      if (result) {
            dev_dbg(&dev->core, "ps3_open_hv_device failed\n");
            goto fail_open;
      }

      result = ps3_dma_region_create(dev->d_region);

      if (result) {
            dev_dbg(&dev->core, "ps3_dma_region_create failed(%d)\n",
                  result);
            BUG_ON("check region type");
            goto fail_dma_region;
      }

      result = lv1_net_set_interrupt_status_indicator(bus_id(card),
                                          dev_id(card),
            ps3_mm_phys_to_lpar(__pa(&card->irq_status)),
            0);

      if (result) {
            dev_dbg(&dev->core,
                  "lv1_net_set_interrupt_status_indicator failed: %s\n",
                  ps3_result(result));
            result = -EIO;
            goto fail_status_indicator;
      }

      result = gelic_net_setup_netdev(card);

      if (result) {
            dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
                  "(%d)\n", __func__, __LINE__, result);
            goto fail_setup_netdev;
      }

      return 0;

fail_setup_netdev:
      lv1_net_set_interrupt_status_indicator(bus_id(card),
                                     bus_id(card),
                                     0 , 0);
fail_status_indicator:
      ps3_dma_region_free(dev->d_region);
fail_dma_region:
      ps3_close_hv_device(dev);
fail_open:
      ps3_system_bus_set_driver_data(dev, NULL);
      free_netdev(card->netdev);
fail_alloc_card:
      return result;
}

/**
 * ps3_gelic_driver_remove - remove a device from the control of this driver
 */

static int ps3_gelic_driver_remove (struct ps3_system_bus_device *dev)
{
      struct gelic_net_card *card = ps3_system_bus_get_driver_data(dev);

      wait_event(card->waitq,
               atomic_read(&card->tx_timeout_task_counter) == 0);

      lv1_net_set_interrupt_status_indicator(bus_id(card), dev_id(card),
                                     0 , 0);

      unregister_netdev(card->netdev);
      free_netdev(card->netdev);

      ps3_system_bus_set_driver_data(dev, NULL);

      ps3_dma_region_free(dev->d_region);

      ps3_close_hv_device(dev);

      return 0;
}

static struct ps3_system_bus_driver ps3_gelic_driver = {
      .match_id = PS3_MATCH_ID_GELIC,
      .probe = ps3_gelic_driver_probe,
      .remove = ps3_gelic_driver_remove,
      .shutdown = ps3_gelic_driver_remove,
      .core.name = "ps3_gelic_driver",
      .core.owner = THIS_MODULE,
};

static int __init ps3_gelic_driver_init (void)
{
      return firmware_has_feature(FW_FEATURE_PS3_LV1)
            ? ps3_system_bus_driver_register(&ps3_gelic_driver)
            : -ENODEV;
}

static void __exit ps3_gelic_driver_exit (void)
{
      ps3_system_bus_driver_unregister(&ps3_gelic_driver);
}

module_init (ps3_gelic_driver_init);
module_exit (ps3_gelic_driver_exit);

MODULE_ALIAS(PS3_MODULE_ALIAS_GELIC);


Generated by  Doxygen 1.6.0   Back to index