diff options
Diffstat (limited to 'drivers/net/ethernet/toshiba/ps3_gelic_net.c')
| -rw-r--r-- | drivers/net/ethernet/toshiba/ps3_gelic_net.c | 1896 |
1 files changed, 1896 insertions, 0 deletions
diff --git a/drivers/net/ethernet/toshiba/ps3_gelic_net.c b/drivers/net/ethernet/toshiba/ps3_gelic_net.c new file mode 100644 index 000000000000..ddb33cfd3543 --- /dev/null +++ b/drivers/net/ethernet/toshiba/ps3_gelic_net.c @@ -0,0 +1,1896 @@ +/* + * 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"); + + +static inline void gelic_card_enable_rxdmac(struct gelic_card *card); +static inline void gelic_card_disable_rxdmac(struct gelic_card *card); +static inline void gelic_card_disable_txdmac(struct gelic_card *card); +static inline void gelic_card_reset_chain(struct gelic_card *card, + struct gelic_descr_chain *chain, + struct gelic_descr *start_descr); + +/* 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 inline 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 inline 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; +} + +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_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_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 __devinit 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_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; +} +/** + * 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 __devinit 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_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 inline 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 inline 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), 0); + if (status) + dev_err(ctodev(card), + "lv1_net_stop_rx_dma failed, %d\n", status); +} + +/** + * 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 inline 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), 0); + if (status) + dev_err(ctodev(card), + "lv1_net_stop_tx_dma failed, status=%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 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 = 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 + * decriptor 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) +{ + strncpy(info->driver, DRV_NAME, sizeof(info->driver) - 1); + strncpy(info->version, DRV_VERSION, sizeof(info->version) - 1); +} + +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 __devinit 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, GELIC_NET_NAPI_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 __devinit 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 * __devinit 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 __devinit 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 __devinit 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__); + 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, + IRQF_DISABLED, 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; + + + if (gelic_card_init_chain(card, &card->tx_chain, + card->descr, GELIC_NET_TX_DESCRIPTORS)) + goto fail_alloc_tx; + if (gelic_card_init_chain(card, &card->rx_chain, + card->descr + GELIC_NET_TX_DESCRIPTORS, + GELIC_NET_RX_DESCRIPTORS)) + 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 */ + if (gelic_card_alloc_rx_skbs(card)) + 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 + if (gelic_wl_driver_probe(card)) { + 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); + |