--- /dev/null
+/*
+ * 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/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.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"
+#include "ps3_gelic_wireless.h"
+
+#define DRV_NAME "Gelic Network Driver"
+#define DRV_VERSION "2.0"
+
+MODULE_AUTHOR("SCE Inc.");
+MODULE_DESCRIPTION("Gelic Network driver");
+MODULE_LICENSE("GPL");
+
+
+/* set irq_mask */
+int gelic_card_set_irq_mask(struct gelic_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),
+ "%s failed %d\n", __func__, status);
+ return status;
+}
+
+static void gelic_card_rx_irq_on(struct gelic_card *card)
+{
+ card->irq_mask |= GELIC_CARD_RXINT;
+ gelic_card_set_irq_mask(card, card->irq_mask);
+}
+static void gelic_card_rx_irq_off(struct gelic_card *card)
+{
+ card->irq_mask &= ~GELIC_CARD_RXINT;
+ gelic_card_set_irq_mask(card, card->irq_mask);
+}
+
+static void gelic_card_get_ether_port_status(struct gelic_card *card,
+ int inform)
+{
+ u64 v2;
+ struct net_device *ether_netdev;
+
+ lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_LV1_GET_ETH_PORT_STATUS,
+ GELIC_LV1_VLAN_TX_ETHERNET_0, 0, 0,
+ &card->ether_port_status, &v2);
+
+ if (inform) {
+ ether_netdev = card->netdev[GELIC_PORT_ETHERNET_0];
+ if (card->ether_port_status & GELIC_LV1_ETHER_LINK_UP)
+ netif_carrier_on(ether_netdev);
+ else
+ netif_carrier_off(ether_netdev);
+ }
+}
+
+static int gelic_card_set_link_mode(struct gelic_card *card, int mode)
+{
+ int status;
+ u64 v1, v2;
+
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_LV1_SET_NEGOTIATION_MODE,
+ GELIC_LV1_PHY_ETHERNET_0, mode, 0, &v1, &v2);
+ if (status) {
+ pr_info("%s: failed setting negotiation mode %d\n", __func__,
+ status);
+ return -EBUSY;
+ }
+
+ card->link_mode = mode;
+ return 0;
+}
+
+/**
+ * gelic_card_disable_txdmac - disables the transmit DMA controller
+ * @card: card structure
+ *
+ * gelic_card_disable_txdmac terminates processing on the DMA controller by
+ * turing off DMA and issuing a force end
+ */
+static void gelic_card_disable_txdmac(struct gelic_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));
+ if (status)
+ dev_err(ctodev(card),
+ "lv1_net_stop_tx_dma failed, status=%d\n", status);
+}
+
+/**
+ * gelic_card_enable_rxdmac - enables the receive DMA controller
+ * @card: card structure
+ *
+ * gelic_card_enable_rxdmac enables the DMA controller by setting RX_DMA_EN
+ * in the GDADMACCNTR register
+ */
+static void gelic_card_enable_rxdmac(struct gelic_card *card)
+{
+ int status;
+
+#ifdef DEBUG
+ if (gelic_descr_get_status(card->rx_chain.head) !=
+ GELIC_DESCR_DMA_CARDOWNED) {
+ printk(KERN_ERR "%s: status=%x\n", __func__,
+ be32_to_cpu(card->rx_chain.head->dmac_cmd_status));
+ printk(KERN_ERR "%s: nextphy=%x\n", __func__,
+ be32_to_cpu(card->rx_chain.head->next_descr_addr));
+ printk(KERN_ERR "%s: head=%p\n", __func__,
+ card->rx_chain.head);
+ }
+#endif
+ status = lv1_net_start_rx_dma(bus_id(card), dev_id(card),
+ card->rx_chain.head->bus_addr, 0);
+ if (status)
+ dev_info(ctodev(card),
+ "lv1_net_start_rx_dma failed, status=%d\n", status);
+}
+
+/**
+ * gelic_card_disable_rxdmac - disables the receive DMA controller
+ * @card: card structure
+ *
+ * gelic_card_disable_rxdmac terminates processing on the DMA controller by
+ * turing off DMA and issuing a force end
+ */
+static void gelic_card_disable_rxdmac(struct gelic_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));
+ if (status)
+ dev_err(ctodev(card),
+ "lv1_net_stop_rx_dma failed, %d\n", status);
+}
+
+/**
+ * gelic_descr_set_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_descr_set_status(struct gelic_descr *descr,
+ enum gelic_descr_dma_status status)
+{
+ descr->dmac_cmd_status = cpu_to_be32(status |
+ (be32_to_cpu(descr->dmac_cmd_status) &
+ ~GELIC_DESCR_DMA_STAT_MASK));
+ /*
+ * 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_card_reset_chain - reset status of a descriptor chain
+ * @card: card structure
+ * @chain: address of chain
+ * @start_descr: address of descriptor array
+ *
+ * Reset the status of dma descriptors to ready state
+ * and re-initialize the hardware chain for later use
+ */
+static void gelic_card_reset_chain(struct gelic_card *card,
+ struct gelic_descr_chain *chain,
+ struct gelic_descr *start_descr)
+{
+ struct gelic_descr *descr;
+
+ for (descr = start_descr; start_descr != descr->next; descr++) {
+ gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED);
+ descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr);
+ }
+
+ chain->head = start_descr;
+ chain->tail = (descr - 1);
+
+ (descr - 1)->next_descr_addr = 0;
+}
+
+void gelic_card_up(struct gelic_card *card)
+{
+ pr_debug("%s: called\n", __func__);
+ mutex_lock(&card->updown_lock);
+ if (atomic_inc_return(&card->users) == 1) {
+ pr_debug("%s: real do\n", __func__);
+ /* enable irq */
+ gelic_card_set_irq_mask(card, card->irq_mask);
+ /* start rx */
+ gelic_card_enable_rxdmac(card);
+
+ napi_enable(&card->napi);
+ }
+ mutex_unlock(&card->updown_lock);
+ pr_debug("%s: done\n", __func__);
+}
+
+void gelic_card_down(struct gelic_card *card)
+{
+ u64 mask;
+ pr_debug("%s: called\n", __func__);
+ mutex_lock(&card->updown_lock);
+ if (atomic_dec_if_positive(&card->users) == 0) {
+ pr_debug("%s: real do\n", __func__);
+ napi_disable(&card->napi);
+ /*
+ * Disable irq. Wireless interrupts will
+ * be disabled later if any
+ */
+ mask = card->irq_mask & (GELIC_CARD_WLAN_EVENT_RECEIVED |
+ GELIC_CARD_WLAN_COMMAND_COMPLETED);
+ gelic_card_set_irq_mask(card, mask);
+ /* stop rx */
+ gelic_card_disable_rxdmac(card);
+ gelic_card_reset_chain(card, &card->rx_chain,
+ card->descr + GELIC_NET_TX_DESCRIPTORS);
+ /* stop tx */
+ gelic_card_disable_txdmac(card);
+ }
+ mutex_unlock(&card->updown_lock);
+ pr_debug("%s: done\n", __func__);
+}
+
+/**
+ * gelic_descr_get_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_descr_dma_status
+gelic_descr_get_status(struct gelic_descr *descr)
+{
+ return be32_to_cpu(descr->dmac_cmd_status) & GELIC_DESCR_DMA_STAT_MASK;
+}
+
+/**
+ * gelic_card_free_chain - free descriptor chain
+ * @card: card structure
+ * @descr_in: address of desc
+ */
+static void gelic_card_free_chain(struct gelic_card *card,
+ struct gelic_descr *descr_in)
+{
+ struct gelic_descr *descr;
+
+ for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) {
+ dma_unmap_single(ctodev(card), descr->bus_addr,
+ GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL);
+ descr->bus_addr = 0;
+ }
+}
+
+/**
+ * gelic_card_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_card_init_chain(struct gelic_card *card,
+ struct gelic_descr_chain *chain,
+ struct gelic_descr *start_descr, int no)
+{
+ int i;
+ struct gelic_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_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE);
+ descr->bus_addr =
+ dma_map_single(ctodev(card), descr,
+ GELIC_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 = cpu_to_be32(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_DESCR_SIZE,
+ DMA_BIDIRECTIONAL);
+ return -ENOMEM;
+}
+
+/**
+ * gelic_descr_prepare_rx - reinitializes a rx descriptor
+ * @card: card structure
+ * @descr: descriptor to re-init
+ *
+ * return 0 on success, <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_descr_prepare_rx(struct gelic_card *card,
+ struct gelic_descr *descr)
+{
+ int offset;
+ unsigned int bufsize;
+
+ if (gelic_descr_get_status(descr) != GELIC_DESCR_DMA_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 = dev_alloc_skb(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 = cpu_to_be32(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 = cpu_to_be32(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_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE);
+ return -ENOMEM;
+ } else {
+ gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED);
+ return 0;
+ }
+}
+
+/**
+ * gelic_card_release_rx_chain - free all skb of rx descr
+ * @card: card structure
+ *
+ */
+static void gelic_card_release_rx_chain(struct gelic_card *card)
+{
+ struct gelic_descr *descr = card->rx_chain.head;
+
+ do {
+ if (descr->skb) {
+ dma_unmap_single(ctodev(card),
+ be32_to_cpu(descr->buf_addr),
+ descr->skb->len,
+ DMA_FROM_DEVICE);
+ descr->buf_addr = 0;
+ dev_kfree_skb_any(descr->skb);
+ descr->skb = NULL;
+ gelic_descr_set_status(descr,
+ GELIC_DESCR_DMA_NOT_IN_USE);
+ }
+ descr = descr->next;
+ } while (descr != card->rx_chain.head);
+}
+
+/**
+ * gelic_card_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_card_fill_rx_chain(struct gelic_card *card)
+{
+ struct gelic_descr *descr = card->rx_chain.head;
+ int ret;
+
+ do {
+ if (!descr->skb) {
+ ret = gelic_descr_prepare_rx(card, descr);
+ if (ret)
+ goto rewind;
+ }
+ descr = descr->next;
+ } while (descr != card->rx_chain.head);
+
+ return 0;
+rewind:
+ gelic_card_release_rx_chain(card);
+ return ret;
+}
+
+/**
+ * gelic_card_alloc_rx_skbs - allocates rx skbs in rx descriptor chains
+ * @card: card structure
+ *
+ * returns 0 on success, < 0 on failure
+ */
+static int gelic_card_alloc_rx_skbs(struct gelic_card *card)
+{
+ struct gelic_descr_chain *chain;
+ int ret;
+ chain = &card->rx_chain;
+ ret = gelic_card_fill_rx_chain(card);
+ chain->tail = card->rx_top->prev; /* point to the last */
+ return ret;
+}
+
+/**
+ * gelic_descr_release_tx - processes a used tx descriptor
+ * @card: card structure
+ * @descr: descriptor to release
+ *
+ * releases a used tx descriptor (unmapping, freeing of skb)
+ */
+static void gelic_descr_release_tx(struct gelic_card *card,
+ struct gelic_descr *descr)
+{
+ struct sk_buff *skb = descr->skb;
+
+ BUG_ON(!(be32_to_cpu(descr->data_status) & GELIC_DESCR_TX_TAIL));
+
+ dma_unmap_single(ctodev(card), be32_to_cpu(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_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE);
+}
+
+static void gelic_card_stop_queues(struct gelic_card *card)
+{
+ netif_stop_queue(card->netdev[GELIC_PORT_ETHERNET_0]);
+
+ if (card->netdev[GELIC_PORT_WIRELESS])
+ netif_stop_queue(card->netdev[GELIC_PORT_WIRELESS]);
+}
+static void gelic_card_wake_queues(struct gelic_card *card)
+{
+ netif_wake_queue(card->netdev[GELIC_PORT_ETHERNET_0]);
+
+ if (card->netdev[GELIC_PORT_WIRELESS])
+ netif_wake_queue(card->netdev[GELIC_PORT_WIRELESS]);
+}
+/**
+ * gelic_card_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_card_release_tx_chain(struct gelic_card *card, int stop)
+{
+ struct gelic_descr_chain *tx_chain;
+ enum gelic_descr_dma_status status;
+ struct net_device *netdev;
+ 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_descr_get_status(tx_chain->tail);
+ netdev = tx_chain->tail->skb->dev;
+ switch (status) {
+ case GELIC_DESCR_DMA_RESPONSE_ERROR:
+ case GELIC_DESCR_DMA_PROTECTION_ERROR:
+ case GELIC_DESCR_DMA_FORCE_END:
+ if (printk_ratelimit())
+ dev_info(ctodev(card),
+ "%s: forcing end of tx descriptor " \
+ "with status %x\n",
+ __func__, status);
+ netdev->stats.tx_dropped++;
+ break;
+
+ case GELIC_DESCR_DMA_COMPLETE:
+ if (tx_chain->tail->skb) {
+ netdev->stats.tx_packets++;
+ netdev->stats.tx_bytes +=
+ tx_chain->tail->skb->len;
+ }
+ break;
+
+ case GELIC_DESCR_DMA_CARDOWNED:
+ /* pending tx request */
+ default:
+ /* any other value (== GELIC_DESCR_DMA_NOT_IN_USE) */
+ if (!stop)
+ goto out;
+ }
+ gelic_descr_release_tx(card, tx_chain->tail);
+ release ++;
+ }
+out:
+ if (!stop && release)
+ gelic_card_wake_queues(card);
+}
+
+/**
+ * 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
+ */
+void gelic_net_set_multi(struct net_device *netdev)
+{
+ struct gelic_card *card = netdev_card(netdev);
+ struct netdev_hw_addr *ha;
+ 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(netdev) > GELIC_NET_MC_COUNT_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 addresses */
+ netdev_for_each_mc_addr(ha, netdev) {
+ addr = 0;
+ p = ha->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_stop - called upon ifconfig down
+ * @netdev: interface device structure
+ *
+ * always returns 0
+ */
+int gelic_net_stop(struct net_device *netdev)
+{
+ struct gelic_card *card;
+
+ pr_debug("%s: start\n", __func__);
+
+ netif_stop_queue(netdev);
+ netif_carrier_off(netdev);
+
+ card = netdev_card(netdev);
+ gelic_card_down(card);
+
+ pr_debug("%s: done\n", __func__);
+ return 0;
+}
+
+/**
+ * gelic_card_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_descr *
+gelic_card_get_next_tx_descr(struct gelic_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_descr_get_status(card->tx_chain.head) ==
+ GELIC_DESCR_DMA_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_descr_set_tx_cmdstat(struct gelic_descr *descr,
+ struct sk_buff *skb)
+{
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ descr->dmac_cmd_status =
+ cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM |
+ GELIC_DESCR_TX_DMA_FRAME_TAIL);
+ 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 =
+ cpu_to_be32(GELIC_DESCR_DMA_CMD_TCP_CHKSUM |
+ GELIC_DESCR_TX_DMA_FRAME_TAIL);
+
+ else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
+ descr->dmac_cmd_status =
+ cpu_to_be32(GELIC_DESCR_DMA_CMD_UDP_CHKSUM |
+ GELIC_DESCR_TX_DMA_FRAME_TAIL);
+ else /*
+ * the stack should checksum non-tcp and non-udp
+ * packets on his own: NETIF_F_IP_CSUM
+ */
+ descr->dmac_cmd_status =
+ cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM |
+ GELIC_DESCR_TX_DMA_FRAME_TAIL);
+ }
+ }
+}
+
+static 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 = cpu_to_be16(ETH_P_8021Q);
+ veth->h_vlan_TCI = htons(tag);
+
+ return skb;
+}
+
+/**
+ * gelic_descr_prepare_tx - setup a descriptor for sending packets
+ * @card: card structure
+ * @descr: descriptor structure
+ * @skb: packet to use
+ *
+ * returns 0 on success, <0 on failure.
+ *
+ */
+static int gelic_descr_prepare_tx(struct gelic_card *card,
+ struct gelic_descr *descr,
+ struct sk_buff *skb)
+{
+ dma_addr_t buf;
+
+ if (card->vlan_required) {
+ struct sk_buff *skb_tmp;
+ enum gelic_port_type type;
+
+ type = netdev_port(skb->dev)->type;
+ skb_tmp = gelic_put_vlan_tag(skb,
+ card->vlan[type].tx);
+ 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 = cpu_to_be32(buf);
+ descr->buf_size = cpu_to_be32(skb->len);
+ descr->skb = skb;
+ descr->data_status = 0;
+ descr->next_descr_addr = 0; /* terminate hw descr */
+ gelic_descr_set_tx_cmdstat(descr, skb);
+
+ /* bump free descriptor pointer */
+ card->tx_chain.head = descr->next;
+ return 0;
+}
+
+/**
+ * gelic_card_kick_txdma - enables TX DMA processing
+ * @card: card structure
+ * @descr: descriptor address to enable TX processing at
+ *
+ */
+static int gelic_card_kick_txdma(struct gelic_card *card,
+ struct gelic_descr *descr)
+{
+ int status = 0;
+
+ if (card->tx_dma_progress)
+ return 0;
+
+ if (gelic_descr_get_status(descr) == GELIC_DESCR_DMA_CARDOWNED) {
+ card->tx_dma_progress = 1;
+ status = lv1_net_start_tx_dma(bus_id(card), dev_id(card),
+ descr->bus_addr, 0);
+ if (status) {
+ card->tx_dma_progress = 0;
+ 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
+ */
+int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct gelic_card *card = netdev_card(netdev);
+ struct gelic_descr *descr;
+ int result;
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->tx_lock, flags);
+
+ gelic_card_release_tx_chain(card, 0);
+
+ descr = gelic_card_get_next_tx_descr(card);
+ if (!descr) {
+ /*
+ * no more descriptors free
+ */
+ gelic_card_stop_queues(card);
+ spin_unlock_irqrestore(&card->tx_lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+
+ result = gelic_descr_prepare_tx(card, descr, skb);
+ if (result) {
+ /*
+ * DMA map failed. As chances are that failure
+ * would continue, just release skb and return
+ */
+ netdev->stats.tx_dropped++;
+ dev_kfree_skb_any(skb);
+ spin_unlock_irqrestore(&card->tx_lock, flags);
+ return NETDEV_TX_OK;
+ }
+ /*
+ * link this prepared descriptor to previous one
+ * to achieve high performance
+ */
+ descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr);
+ /*
+ * as hardware descriptor is modified in the above lines,
+ * ensure that the hardware sees it
+ */
+ wmb();
+ if (gelic_card_kick_txdma(card, descr)) {
+ /*
+ * kick failed.
+ * release descriptor which was just prepared
+ */
+ netdev->stats.tx_dropped++;
+ /* don't trigger BUG_ON() in gelic_descr_release_tx */
+ descr->data_status = cpu_to_be32(GELIC_DESCR_TX_TAIL);
+ gelic_descr_release_tx(card, descr);
+ /* reset head */
+ card->tx_chain.head = descr;
+ /* reset hw termination */
+ descr->prev->next_descr_addr = 0;
+ dev_info(ctodev(card), "%s: kick failure\n", __func__);
+ }
+
+ spin_unlock_irqrestore(&card->tx_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
+ * @netdev: net_device structure to be passed packet
+ *
+ * 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_descr *descr,
+ struct gelic_card *card,
+ struct net_device *netdev)
+
+{
+ struct sk_buff *skb = descr->skb;
+ u32 data_status, data_error;
+
+ data_status = be32_to_cpu(descr->data_status);
+ data_error = be32_to_cpu(descr->data_error);
+ /* unmap skb buffer */
+ dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr),
+ GELIC_NET_MAX_MTU,
+ DMA_FROM_DEVICE);
+
+ skb_put(skb, be32_to_cpu(descr->valid_size)?
+ be32_to_cpu(descr->valid_size) :
+ be32_to_cpu(descr->result_size));
+ if (!descr->valid_size)
+ dev_info(ctodev(card), "buffer full %x %x %x\n",
+ be32_to_cpu(descr->result_size),
+ be32_to_cpu(descr->buf_size),
+ be32_to_cpu(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 (netdev->features & NETIF_F_RXCSUM) {
+ if ((data_status & GELIC_DESCR_DATA_STATUS_CHK_MASK) &&
+ (!(data_error & GELIC_DESCR_DATA_ERROR_CHK_MASK)))
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ else
+ skb_checksum_none_assert(skb);
+ } else
+ skb_checksum_none_assert(skb);
+
+ /* update netdevice statistics */
+ netdev->stats.rx_packets++;
+ netdev->stats.rx_bytes += skb->len;
+
+ /* pass skb up to stack */
+ netif_receive_skb(skb);
+}
+
+/**
+ * gelic_card_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_card_decode_one_descr(struct gelic_card *card)
+{
+ enum gelic_descr_dma_status status;
+ struct gelic_descr_chain *chain = &card->rx_chain;
+ struct gelic_descr *descr = chain->head;
+ struct net_device *netdev = NULL;
+ int dmac_chain_ended;
+
+ status = gelic_descr_get_status(descr);
+
+ if (status == GELIC_DESCR_DMA_CARDOWNED)
+ return 0;
+
+ if (status == GELIC_DESCR_DMA_NOT_IN_USE) {
+ dev_dbg(ctodev(card), "dormant descr? %p\n", descr);
+ return 0;
+ }
+
+ /* netdevice select */
+ if (card->vlan_required) {
+ unsigned int i;
+ u16 vid;
+ vid = *(u16 *)(descr->skb->data) & VLAN_VID_MASK;
+ for (i = 0; i < GELIC_PORT_MAX; i++) {
+ if (card->vlan[i].rx == vid) {
+ netdev = card->netdev[i];
+ break;
+ }
+ }
+ if (GELIC_PORT_MAX <= i) {
+ pr_info("%s: unknown packet vid=%x\n", __func__, vid);
+ goto refill;
+ }
+ } else
+ netdev = card->netdev[GELIC_PORT_ETHERNET_0];
+
+ if ((status == GELIC_DESCR_DMA_RESPONSE_ERROR) ||
+ (status == GELIC_DESCR_DMA_PROTECTION_ERROR) ||
+ (status == GELIC_DESCR_DMA_FORCE_END)) {
+ dev_info(ctodev(card), "dropping RX descriptor with state %x\n",
+ status);
+ netdev->stats.rx_dropped++;
+ goto refill;
+ }
+
+ if (status == GELIC_DESCR_DMA_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;
+ }
+ /*
+ * descriptors any other than FRAME_END here should
+ * be treated as error.
+ */
+ if (status != GELIC_DESCR_DMA_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, netdev);
+refill:
+
+ /* is the current descriptor terminated with next_descr == NULL? */
+ dmac_chain_ended =
+ be32_to_cpu(descr->dmac_cmd_status) &
+ GELIC_DESCR_RX_DMA_CHAIN_END;
+ /*
+ * 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_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE);
+
+ /*
+ * this call can fail, but for now, just leave this
+ * descriptor without skb
+ */
+ gelic_descr_prepare_rx(card, descr);
+
+ chain->tail = descr;
+ chain->head = descr->next;
+
+ /*
+ * Set this descriptor the end of the chain.
+ */
+ descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr);
+
+ /*
+ * If dmac chain was met, DMAC stopped.
+ * thus re-enable it
+ */
+
+ if (dmac_chain_ended)
+ gelic_card_enable_rxdmac(card);
+
+ return 1;
+}
+
+/**
+ * gelic_net_poll - NAPI poll function called by the stack to return packets
+ * @napi: napi structure
+ * @budget: number of packets we can pass to the stack at most
+ *
+ * returns the number of the processed packets
+ *
+ */
+static int gelic_net_poll(struct napi_struct *napi, int budget)
+{
+ struct gelic_card *card = container_of(napi, struct gelic_card, napi);
+ int packets_done = 0;
+
+ while (packets_done < budget) {
+ if (!gelic_card_decode_one_descr(card))
+ break;
+
+ packets_done++;
+ }
+
+ if (packets_done < budget) {
+ napi_complete(napi);
+ gelic_card_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
+ */
+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_card_interrupt - event handler for gelic_net
+ */
+static irqreturn_t gelic_card_interrupt(int irq, void *ptr)
+{
+ unsigned long flags;
+ struct gelic_card *card = ptr;
+ u64 status;
+
+ status = card->irq_status;
+
+ if (!status)
+ return IRQ_NONE;
+
+ status &= card->irq_mask;
+
+ if (status & GELIC_CARD_RXINT) {
+ gelic_card_rx_irq_off(card);
+ napi_schedule(&card->napi);
+ }
+
+ if (status & GELIC_CARD_TXINT) {
+ spin_lock_irqsave(&card->tx_lock, flags);
+ card->tx_dma_progress = 0;
+ gelic_card_release_tx_chain(card, 0);
+ /* kick outstanding tx descriptor if any */
+ gelic_card_kick_txdma(card, card->tx_chain.tail);
+ spin_unlock_irqrestore(&card->tx_lock, flags);
+ }
+
+ /* ether port status changed */
+ if (status & GELIC_CARD_PORT_STATUS_CHANGED)
+ gelic_card_get_ether_port_status(card, 1);
+
+#ifdef CONFIG_GELIC_WIRELESS
+ if (status & (GELIC_CARD_WLAN_EVENT_RECEIVED |
+ GELIC_CARD_WLAN_COMMAND_COMPLETED))
+ gelic_wl_interrupt(card->netdev[GELIC_PORT_WIRELESS], status);
+#endif
+
+ 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
+ */
+void gelic_net_poll_controller(struct net_device *netdev)
+{
+ struct gelic_card *card = netdev_card(netdev);
+
+ gelic_card_set_irq_mask(card, 0);
+ gelic_card_interrupt(netdev->irq, netdev);
+ gelic_card_set_irq_mask(card, card->irq_mask);
+}
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
+/**
+ * gelic_net_open - called upon ifconfig 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
+ */
+int gelic_net_open(struct net_device *netdev)
+{
+ struct gelic_card *card = netdev_card(netdev);
+
+ dev_dbg(ctodev(card), " -> %s %p\n", __func__, netdev);
+
+ gelic_card_up(card);
+
+ netif_start_queue(netdev);
+ gelic_card_get_ether_port_status(card, 1);
+
+ dev_dbg(ctodev(card), " <- %s\n", __func__);
+ return 0;
+}
+
+void gelic_net_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *info)
+{
+ strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
+ strlcpy(info->version, DRV_VERSION, sizeof(info->version));
+}
+
+static int gelic_ether_get_settings(struct net_device *netdev,
+ struct ethtool_cmd *cmd)
+{
+ struct gelic_card *card = netdev_card(netdev);
+
+ gelic_card_get_ether_port_status(card, 0);
+
+ if (card->ether_port_status & GELIC_LV1_ETHER_FULL_DUPLEX)
+ cmd->duplex = DUPLEX_FULL;
+ else
+ cmd->duplex = DUPLEX_HALF;
+
+ switch (card->ether_port_status & GELIC_LV1_ETHER_SPEED_MASK) {
+ case GELIC_LV1_ETHER_SPEED_10:
+ ethtool_cmd_speed_set(cmd, SPEED_10);
+ break;
+ case GELIC_LV1_ETHER_SPEED_100:
+ ethtool_cmd_speed_set(cmd, SPEED_100);
+ break;
+ case GELIC_LV1_ETHER_SPEED_1000:
+ ethtool_cmd_speed_set(cmd, SPEED_1000);
+ break;
+ default:
+ pr_info("%s: speed unknown\n", __func__);
+ ethtool_cmd_speed_set(cmd, SPEED_10);
+ break;
+ }
+
+ cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg |
+ SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
+ SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
+ SUPPORTED_1000baseT_Full;
+ cmd->advertising = cmd->supported;
+ if (card->link_mode & GELIC_LV1_ETHER_AUTO_NEG) {
+ cmd->autoneg = AUTONEG_ENABLE;
+ } else {
+ cmd->autoneg = AUTONEG_DISABLE;
+ cmd->advertising &= ~ADVERTISED_Autoneg;
+ }
+ cmd->port = PORT_TP;
+
+ return 0;
+}
+
+static int gelic_ether_set_settings(struct net_device *netdev,
+ struct ethtool_cmd *cmd)
+{
+ struct gelic_card *card = netdev_card(netdev);
+ u64 mode;
+ int ret;
+
+ if (cmd->autoneg == AUTONEG_ENABLE) {
+ mode = GELIC_LV1_ETHER_AUTO_NEG;
+ } else {
+ switch (cmd->speed) {
+ case SPEED_10:
+ mode = GELIC_LV1_ETHER_SPEED_10;
+ break;
+ case SPEED_100:
+ mode = GELIC_LV1_ETHER_SPEED_100;
+ break;
+ case SPEED_1000:
+ mode = GELIC_LV1_ETHER_SPEED_1000;
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (cmd->duplex == DUPLEX_FULL)
+ mode |= GELIC_LV1_ETHER_FULL_DUPLEX;
+ else if (cmd->speed == SPEED_1000) {
+ pr_info("1000 half duplex is not supported.\n");
+ return -EINVAL;
+ }
+ }
+
+ ret = gelic_card_set_link_mode(card, mode);
+
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void gelic_net_get_wol(struct net_device *netdev,
+ struct ethtool_wolinfo *wol)
+{
+ if (0 <= ps3_compare_firmware_version(2, 2, 0))
+ wol->supported = WAKE_MAGIC;
+ else
+ wol->supported = 0;
+
+ wol->wolopts = ps3_sys_manager_get_wol() ? wol->supported : 0;
+ memset(&wol->sopass, 0, sizeof(wol->sopass));
+}
+static int gelic_net_set_wol(struct net_device *netdev,
+ struct ethtool_wolinfo *wol)
+{
+ int status;
+ struct gelic_card *card;
+ u64 v1, v2;
+
+ if (ps3_compare_firmware_version(2, 2, 0) < 0 ||
+ !capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (wol->wolopts & ~WAKE_MAGIC)
+ return -EINVAL;
+
+ card = netdev_card(netdev);
+ if (wol->wolopts & WAKE_MAGIC) {
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_LV1_SET_WOL,
+ GELIC_LV1_WOL_MAGIC_PACKET,
+ 0, GELIC_LV1_WOL_MP_ENABLE,
+ &v1, &v2);
+ if (status) {
+ pr_info("%s: enabling WOL failed %d\n", __func__,
+ status);
+ status = -EIO;
+ goto done;
+ }
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_LV1_SET_WOL,
+ GELIC_LV1_WOL_ADD_MATCH_ADDR,
+ 0, GELIC_LV1_WOL_MATCH_ALL,
+ &v1, &v2);
+ if (!status)
+ ps3_sys_manager_set_wol(1);
+ else {
+ pr_info("%s: enabling WOL filter failed %d\n",
+ __func__, status);
+ status = -EIO;
+ }
+ } else {
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_LV1_SET_WOL,
+ GELIC_LV1_WOL_MAGIC_PACKET,
+ 0, GELIC_LV1_WOL_MP_DISABLE,
+ &v1, &v2);
+ if (status) {
+ pr_info("%s: disabling WOL failed %d\n", __func__,
+ status);
+ status = -EIO;
+ goto done;
+ }
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_LV1_SET_WOL,
+ GELIC_LV1_WOL_DELETE_MATCH_ADDR,
+ 0, GELIC_LV1_WOL_MATCH_ALL,
+ &v1, &v2);
+ if (!status)
+ ps3_sys_manager_set_wol(0);
+ else {
+ pr_info("%s: removing WOL filter failed %d\n",
+ __func__, status);
+ status = -EIO;
+ }
+ }
+done:
+ return status;
+}
+
+static const struct ethtool_ops gelic_ether_ethtool_ops = {
+ .get_drvinfo = gelic_net_get_drvinfo,
+ .get_settings = gelic_ether_get_settings,
+ .set_settings = gelic_ether_set_settings,
+ .get_link = ethtool_op_get_link,
+ .get_wol = gelic_net_get_wol,
+ .set_wol = gelic_net_set_wol,
+};
+
+/**
+ * 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_card *card =
+ container_of(work, struct gelic_card, tx_timeout_task);
+ struct net_device *netdev = card->netdev[GELIC_PORT_ETHERNET_0];
+
+ 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
+ */
+void gelic_net_tx_timeout(struct net_device *netdev)
+{
+ struct gelic_card *card;
+
+ card = netdev_card(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);
+}
+
+static const struct net_device_ops gelic_netdevice_ops = {
+ .ndo_open = gelic_net_open,
+ .ndo_stop = gelic_net_stop,
+ .ndo_start_xmit = gelic_net_xmit,
+ .ndo_set_rx_mode = gelic_net_set_multi,
+ .ndo_change_mtu = gelic_net_change_mtu,
+ .ndo_tx_timeout = gelic_net_tx_timeout,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = gelic_net_poll_controller,
+#endif
+};
+
+/**
+ * gelic_ether_setup_netdev_ops - initialization of net_device operations
+ * @netdev: net_device structure
+ *
+ * fills out function pointers in the net_device structure
+ */
+static void gelic_ether_setup_netdev_ops(struct net_device *netdev,
+ struct napi_struct *napi)
+{
+ netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT;
+ /* NAPI */
+ netif_napi_add(netdev, napi, gelic_net_poll, NAPI_POLL_WEIGHT);
+ netdev->ethtool_ops = &gelic_ether_ethtool_ops;
+ netdev->netdev_ops = &gelic_netdevice_ops;
+}
+
+/**
+ * gelic_ether_setup_netdev - initialization of net_device
+ * @netdev: net_device structure
+ * @card: card structure
+ *
+ * Returns 0 on success or <0 on failure
+ *
+ * gelic_ether_setup_netdev initializes the net_device structure
+ * and register it.
+ **/
+int gelic_net_setup_netdev(struct net_device *netdev, struct gelic_card *card)
+{
+ int status;
+ u64 v1, v2;
+
+ netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
+
+ netdev->features = NETIF_F_IP_CSUM;
+ if (GELIC_CARD_RX_CSUM_DEFAULT)
+ netdev->features |= NETIF_F_RXCSUM;
+
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_LV1_GET_MAC_ADDRESS,
+ 0, 0, 0, &v1, &v2);
+ v1 <<= 16;
+ 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;
+ }
+ memcpy(netdev->dev_addr, &v1, ETH_ALEN);
+
+ if (card->vlan_required) {
+ netdev->hard_header_len += VLAN_HLEN;
+ /*
+ * As vlan is internally used,
+ * we can not receive vlan packets
+ */
+ netdev->features |= NETIF_F_VLAN_CHALLENGED;
+ }
+
+ status = register_netdev(netdev);
+ if (status) {
+ dev_err(ctodev(card), "%s:Couldn't register %s %d\n",
+ __func__, netdev->name, status);
+ return status;
+ }
+ dev_info(ctodev(card), "%s: MAC addr %pM\n",
+ netdev->name, netdev->dev_addr);
+
+ return 0;
+}
+
+/**
+ * gelic_alloc_card_net - 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
+ */
+#define GELIC_ALIGN (32)
+static struct gelic_card *gelic_alloc_card_net(struct net_device **netdev)
+{
+ struct gelic_card *card;
+ struct gelic_port *port;
+ void *p;
+ size_t alloc_size;
+ /*
+ * gelic requires dma descriptor is 32 bytes aligned and
+ * the hypervisor requires irq_status is 8 bytes aligned.
+ */
+ BUILD_BUG_ON(offsetof(struct gelic_card, irq_status) % 8);
+ BUILD_BUG_ON(offsetof(struct gelic_card, descr) % 32);
+ alloc_size =
+ sizeof(struct gelic_card) +
+ sizeof(struct gelic_descr) * GELIC_NET_RX_DESCRIPTORS +
+ sizeof(struct gelic_descr) * GELIC_NET_TX_DESCRIPTORS +
+ GELIC_ALIGN - 1;
+
+ p = kzalloc(alloc_size, GFP_KERNEL);
+ if (!p)
+ return NULL;
+ card = PTR_ALIGN(p, GELIC_ALIGN);
+ card->unalign = p;
+
+ /*
+ * alloc netdev
+ */
+ *netdev = alloc_etherdev(sizeof(struct gelic_port));
+ if (!*netdev) {
+ kfree(card->unalign);
+ return NULL;
+ }
+ port = netdev_priv(*netdev);
+
+ /* gelic_port */
+ port->netdev = *netdev;
+ port->card = card;
+ port->type = GELIC_PORT_ETHERNET_0;
+
+ /* gelic_card */
+ card->netdev[GELIC_PORT_ETHERNET_0] = *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);
+ mutex_init(&card->updown_lock);
+ atomic_set(&card->users, 0);
+
+ return card;
+}
+
+static void gelic_card_get_vlan_info(struct gelic_card *card)
+{
+ u64 v1, v2;
+ int status;
+ unsigned int i;
+ struct {
+ int tx;
+ int rx;
+ } vlan_id_ix[2] = {
+ [GELIC_PORT_ETHERNET_0] = {
+ .tx = GELIC_LV1_VLAN_TX_ETHERNET_0,
+ .rx = GELIC_LV1_VLAN_RX_ETHERNET_0
+ },
+ [GELIC_PORT_WIRELESS] = {
+ .tx = GELIC_LV1_VLAN_TX_WIRELESS,
+ .rx = GELIC_LV1_VLAN_RX_WIRELESS
+ }
+ };
+
+ for (i = 0; i < ARRAY_SIZE(vlan_id_ix); i++) {
+ /* tx tag */
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_LV1_GET_VLAN_ID,
+ vlan_id_ix[i].tx,
+ 0, 0, &v1, &v2);
+ if (status || !v1) {
+ if (status != LV1_NO_ENTRY)
+ dev_dbg(ctodev(card),
+ "get vlan id for tx(%d) failed(%d)\n",
+ vlan_id_ix[i].tx, status);
+ card->vlan[i].tx = 0;
+ card->vlan[i].rx = 0;
+ continue;
+ }
+ card->vlan[i].tx = (u16)v1;
+
+ /* rx tag */
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_LV1_GET_VLAN_ID,
+ vlan_id_ix[i].rx,
+ 0, 0, &v1, &v2);
+ if (status || !v1) {
+ if (status != LV1_NO_ENTRY)
+ dev_info(ctodev(card),
+ "get vlan id for rx(%d) failed(%d)\n",
+ vlan_id_ix[i].rx, status);
+ card->vlan[i].tx = 0;
+ card->vlan[i].rx = 0;
+ continue;
+ }
+ card->vlan[i].rx = (u16)v1;
+
+ dev_dbg(ctodev(card), "vlan_id[%d] tx=%02x rx=%02x\n",
+ i, card->vlan[i].tx, card->vlan[i].rx);
+ }
+
+ if (card->vlan[GELIC_PORT_ETHERNET_0].tx) {
+ BUG_ON(!card->vlan[GELIC_PORT_WIRELESS].tx);
+ card->vlan_required = 1;
+ } else
+ card->vlan_required = 0;
+
+ /* check wirelss capable firmware */
+ if (ps3_compare_firmware_version(1, 6, 0) < 0) {
+ card->vlan[GELIC_PORT_WIRELESS].tx = 0;
+ card->vlan[GELIC_PORT_WIRELESS].rx = 0;
+ }
+
+ dev_info(ctodev(card), "internal vlan %s\n",
+ card->vlan_required? "enabled" : "disabled");
+}
+/**
+ * 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_card *card;
+ struct net_device *netdev;
+ int result;
+
+ pr_debug("%s: called\n", __func__);
+
+ udbg_shutdown_ps3gelic();
+
+ result = ps3_open_hv_device(dev);
+
+ if (result) {
+ dev_dbg(&dev->core, "%s:ps3_open_hv_device failed\n",
+ __func__);
+ goto fail_open;
+ }
+
+ result = ps3_dma_region_create(dev->d_region);
+
+ if (result) {
+ dev_dbg(&dev->core, "%s:ps3_dma_region_create failed(%d)\n",
+ __func__, result);
+ BUG_ON("check region type");
+ goto fail_dma_region;
+ }
+
+ /* alloc card/netdevice */
+ card = gelic_alloc_card_net(&netdev);
+ if (!card) {
+ dev_info(&dev->core, "%s:gelic_net_alloc_card failed\n",
+ __func__);
+ result = -ENOMEM;
+ goto fail_alloc_card;
+ }
+ ps3_system_bus_set_drvdata(dev, card);
+ card->dev = dev;
+
+ /* get internal vlan info */
+ gelic_card_get_vlan_info(card);
+
+ card->link_mode = GELIC_LV1_ETHER_AUTO_NEG;
+
+ /* setup interrupt */
+ 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,
+ "%s:set_interrupt_status_indicator failed: %s\n",
+ __func__, ps3_result(result));
+ result = -EIO;
+ goto fail_status_indicator;
+ }
+
+ result = ps3_sb_event_receive_port_setup(dev, PS3_BINDING_CPU_ANY,
+ &card->irq);
+
+ if (result) {
+ dev_info(ctodev(card),
+ "%s:gelic_net_open_device failed (%d)\n",
+ __func__, result);
+ result = -EPERM;
+ goto fail_alloc_irq;
+ }
+ result = request_irq(card->irq, gelic_card_interrupt,
+ 0, netdev->name, card);
+
+ if (result) {
+ dev_info(ctodev(card), "%s:request_irq failed (%d)\n",
+ __func__, result);
+ goto fail_request_irq;
+ }
+
+ /* setup card structure */
+ card->irq_mask = GELIC_CARD_RXINT | GELIC_CARD_TXINT |
+ GELIC_CARD_PORT_STATUS_CHANGED;
+
+
+ result = gelic_card_init_chain(card, &card->tx_chain,
+ card->descr, GELIC_NET_TX_DESCRIPTORS);
+ if (result)
+ goto fail_alloc_tx;
+ result = gelic_card_init_chain(card, &card->rx_chain,
+ card->descr + GELIC_NET_TX_DESCRIPTORS,
+ GELIC_NET_RX_DESCRIPTORS);
+ if (result)
+ goto fail_alloc_rx;
+
+ /* 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_descr),
+ GELIC_NET_RX_DESCRIPTORS);
+ /* allocate rx skbs */
+ result = gelic_card_alloc_rx_skbs(card);
+ if (result)
+ goto fail_alloc_skbs;
+
+ spin_lock_init(&card->tx_lock);
+ card->tx_dma_progress = 0;
+
+ /* setup net_device structure */
+ netdev->irq = card->irq;
+ SET_NETDEV_DEV(netdev, &card->dev->core);
+ gelic_ether_setup_netdev_ops(netdev, &card->napi);
+ result = gelic_net_setup_netdev(netdev, card);
+ if (result) {
+ dev_dbg(&dev->core, "%s: setup_netdev failed %d",
+ __func__, result);
+ goto fail_setup_netdev;
+ }
+
+#ifdef CONFIG_GELIC_WIRELESS
+ result = gelic_wl_driver_probe(card);
+ if (result) {
+ dev_dbg(&dev->core, "%s: WL init failed\n", __func__);
+ goto fail_setup_netdev;
+ }
+#endif
+ pr_debug("%s: done\n", __func__);
+ return 0;
+
+fail_setup_netdev:
+fail_alloc_skbs:
+ gelic_card_free_chain(card, card->rx_chain.head);
+fail_alloc_rx:
+ gelic_card_free_chain(card, card->tx_chain.head);
+fail_alloc_tx:
+ free_irq(card->irq, card);
+ netdev->irq = NO_IRQ;
+fail_request_irq:
+ ps3_sb_event_receive_port_destroy(dev, card->irq);
+fail_alloc_irq:
+ lv1_net_set_interrupt_status_indicator(bus_id(card),
+ bus_id(card),
+ 0, 0);
+fail_status_indicator:
+ ps3_system_bus_set_drvdata(dev, NULL);
+ kfree(netdev_card(netdev)->unalign);
+ free_netdev(netdev);
+fail_alloc_card:
+ ps3_dma_region_free(dev->d_region);
+fail_dma_region:
+ ps3_close_hv_device(dev);
+fail_open:
+ 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_card *card = ps3_system_bus_get_drvdata(dev);
+ struct net_device *netdev0;
+ pr_debug("%s: called\n", __func__);
+
+ /* set auto-negotiation */
+ gelic_card_set_link_mode(card, GELIC_LV1_ETHER_AUTO_NEG);
+
+#ifdef CONFIG_GELIC_WIRELESS
+ gelic_wl_driver_remove(card);
+#endif
+ /* stop interrupt */
+ gelic_card_set_irq_mask(card, 0);
+
+ /* turn off DMA, force end */
+ gelic_card_disable_rxdmac(card);
+ gelic_card_disable_txdmac(card);
+
+ /* release chains */
+ gelic_card_release_tx_chain(card, 1);
+ gelic_card_release_rx_chain(card);
+
+ gelic_card_free_chain(card, card->tx_top);
+ gelic_card_free_chain(card, card->rx_top);
+
+ netdev0 = card->netdev[GELIC_PORT_ETHERNET_0];
+ /* disconnect event port */
+ free_irq(card->irq, card);
+ netdev0->irq = NO_IRQ;
+ ps3_sb_event_receive_port_destroy(card->dev, card->irq);
+
+ 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(netdev0);
+ kfree(netdev_card(netdev0)->unalign);
+ free_netdev(netdev0);
+
+ ps3_system_bus_set_drvdata(dev, NULL);
+
+ ps3_dma_region_free(dev->d_region);
+
+ ps3_close_hv_device(dev);
+
+ pr_debug("%s: done\n", __func__);
+ 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);
+
Code Review / kvmfornfv.git / blobdiff