diff options
Diffstat (limited to 'drivers/net/e1000/e1000_main.c')
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 163 |
1 files changed, 88 insertions, 75 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index b28a915bd98..9267f16b1b3 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -409,25 +409,21 @@ e1000_release_hw_control(struct e1000_adapter *adapter) { uint32_t ctrl_ext; uint32_t swsm; - uint32_t extcnf; /* Let firmware taken over control of h/w */ switch (adapter->hw.mac_type) { - case e1000_82571: - case e1000_82572: - case e1000_80003es2lan: - ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); - E1000_WRITE_REG(&adapter->hw, CTRL_EXT, - ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); - break; case e1000_82573: swsm = E1000_READ_REG(&adapter->hw, SWSM); E1000_WRITE_REG(&adapter->hw, SWSM, swsm & ~E1000_SWSM_DRV_LOAD); + break; + case e1000_82571: + case e1000_82572: + case e1000_80003es2lan: case e1000_ich8lan: - extcnf = E1000_READ_REG(&adapter->hw, CTRL_EXT); + ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); E1000_WRITE_REG(&adapter->hw, CTRL_EXT, - extcnf & ~E1000_CTRL_EXT_DRV_LOAD); + ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); break; default: break; @@ -450,26 +446,21 @@ e1000_get_hw_control(struct e1000_adapter *adapter) { uint32_t ctrl_ext; uint32_t swsm; - uint32_t extcnf; /* Let firmware know the driver has taken over */ switch (adapter->hw.mac_type) { - case e1000_82571: - case e1000_82572: - case e1000_80003es2lan: - ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); - E1000_WRITE_REG(&adapter->hw, CTRL_EXT, - ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); - break; case e1000_82573: swsm = E1000_READ_REG(&adapter->hw, SWSM); E1000_WRITE_REG(&adapter->hw, SWSM, swsm | E1000_SWSM_DRV_LOAD); break; + case e1000_82571: + case e1000_82572: + case e1000_80003es2lan: case e1000_ich8lan: - extcnf = E1000_READ_REG(&adapter->hw, EXTCNF_CTRL); - E1000_WRITE_REG(&adapter->hw, EXTCNF_CTRL, - extcnf | E1000_EXTCNF_CTRL_SWFLAG); + ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); + E1000_WRITE_REG(&adapter->hw, CTRL_EXT, + ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); break; default: break; @@ -522,14 +513,15 @@ e1000_release_manageability(struct e1000_adapter *adapter) } } -int -e1000_up(struct e1000_adapter *adapter) +/** + * e1000_configure - configure the hardware for RX and TX + * @adapter = private board structure + **/ +static void e1000_configure(struct e1000_adapter *adapter) { struct net_device *netdev = adapter->netdev; int i; - /* hardware has been reset, we need to reload some things */ - e1000_set_multi(netdev); e1000_restore_vlan(adapter); @@ -548,14 +540,20 @@ e1000_up(struct e1000_adapter *adapter) } adapter->tx_queue_len = netdev->tx_queue_len; +} + +int e1000_up(struct e1000_adapter *adapter) +{ + /* hardware has been reset, we need to reload some things */ + e1000_configure(adapter); + + clear_bit(__E1000_DOWN, &adapter->flags); #ifdef CONFIG_E1000_NAPI - netif_poll_enable(netdev); + netif_poll_enable(adapter->netdev); #endif e1000_irq_enable(adapter); - clear_bit(__E1000_DOWN, &adapter->flags); - /* fire a link change interrupt to start the watchdog */ E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); return 0; @@ -640,15 +638,15 @@ e1000_down(struct e1000_adapter *adapter) * reschedule our watchdog timer */ set_bit(__E1000_DOWN, &adapter->flags); +#ifdef CONFIG_E1000_NAPI + netif_poll_disable(netdev); +#endif e1000_irq_disable(adapter); del_timer_sync(&adapter->tx_fifo_stall_timer); del_timer_sync(&adapter->watchdog_timer); del_timer_sync(&adapter->phy_info_timer); -#ifdef CONFIG_E1000_NAPI - netif_poll_disable(netdev); -#endif netdev->tx_queue_len = adapter->tx_queue_len; adapter->link_speed = 0; adapter->link_duplex = 0; @@ -1410,21 +1408,17 @@ e1000_open(struct net_device *netdev) return -EBUSY; /* allocate transmit descriptors */ - if ((err = e1000_setup_all_tx_resources(adapter))) + err = e1000_setup_all_tx_resources(adapter); + if (err) goto err_setup_tx; /* allocate receive descriptors */ - if ((err = e1000_setup_all_rx_resources(adapter))) - goto err_setup_rx; - - err = e1000_request_irq(adapter); + err = e1000_setup_all_rx_resources(adapter); if (err) - goto err_req_irq; + goto err_setup_rx; e1000_power_up_phy(adapter); - if ((err = e1000_up(adapter))) - goto err_up; adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; if ((adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { @@ -1437,12 +1431,33 @@ e1000_open(struct net_device *netdev) e1000_check_mng_mode(&adapter->hw)) e1000_get_hw_control(adapter); + /* before we allocate an interrupt, we must be ready to handle it. + * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt + * as soon as we call pci_request_irq, so we have to setup our + * clean_rx handler before we do so. */ + e1000_configure(adapter); + + err = e1000_request_irq(adapter); + if (err) + goto err_req_irq; + + /* From here on the code is the same as e1000_up() */ + clear_bit(__E1000_DOWN, &adapter->flags); + +#ifdef CONFIG_E1000_NAPI + netif_poll_enable(netdev); +#endif + + e1000_irq_enable(adapter); + + /* fire a link status change interrupt to start the watchdog */ + E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); + return E1000_SUCCESS; -err_up: - e1000_power_down_phy(adapter); - e1000_free_irq(adapter); err_req_irq: + e1000_release_hw_control(adapter); + e1000_power_down_phy(adapter); e1000_free_all_rx_resources(adapter); err_setup_rx: e1000_free_all_tx_resources(adapter); @@ -2887,33 +2902,30 @@ e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, return err; } - hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); + hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); mss = skb_shinfo(skb)->gso_size; if (skb->protocol == htons(ETH_P_IP)) { - skb->nh.iph->tot_len = 0; - skb->nh.iph->check = 0; - skb->h.th->check = - ~csum_tcpudp_magic(skb->nh.iph->saddr, - skb->nh.iph->daddr, - 0, - IPPROTO_TCP, - 0); + struct iphdr *iph = ip_hdr(skb); + iph->tot_len = 0; + iph->check = 0; + tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, + iph->daddr, 0, + IPPROTO_TCP, + 0); cmd_length = E1000_TXD_CMD_IP; - ipcse = skb->h.raw - skb->data - 1; + ipcse = skb_transport_offset(skb) - 1; } else if (skb->protocol == htons(ETH_P_IPV6)) { - skb->nh.ipv6h->payload_len = 0; - skb->h.th->check = - ~csum_ipv6_magic(&skb->nh.ipv6h->saddr, - &skb->nh.ipv6h->daddr, - 0, - IPPROTO_TCP, - 0); + ipv6_hdr(skb)->payload_len = 0; + tcp_hdr(skb)->check = + ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, + &ipv6_hdr(skb)->daddr, + 0, IPPROTO_TCP, 0); ipcse = 0; } - ipcss = skb->nh.raw - skb->data; - ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; - tucss = skb->h.raw - skb->data; - tucso = (void *)&(skb->h.th->check) - (void *)skb->data; + ipcss = skb_network_offset(skb); + ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; + tucss = skb_transport_offset(skb); + tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; tucse = 0; cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | @@ -2954,7 +2966,7 @@ e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, uint8_t css; if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { - css = skb->h.raw - skb->data; + css = skb_transport_offset(skb); i = tx_ring->next_to_use; buffer_info = &tx_ring->buffer_info[i]; @@ -2962,7 +2974,8 @@ e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, context_desc->lower_setup.ip_config = 0; context_desc->upper_setup.tcp_fields.tucss = css; - context_desc->upper_setup.tcp_fields.tucso = css + skb->csum; + context_desc->upper_setup.tcp_fields.tucso = + css + skb->csum_offset; context_desc->upper_setup.tcp_fields.tucse = 0; context_desc->tcp_seg_setup.data = 0; context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); @@ -3296,7 +3309,7 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) /* TSO Workaround for 82571/2/3 Controllers -- if skb->data * points to just header, pull a few bytes of payload from * frags into skb->data */ - hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); + hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) { switch (adapter->hw.mac_type) { unsigned int pull_size; @@ -3307,7 +3320,7 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) * NOTE: this is a TSO only workaround * if end byte alignment not correct move us * into the next dword */ - if ((unsigned long)(skb->tail - 1) & 4) + if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) break; /* fall through */ case e1000_82571: @@ -3363,12 +3376,9 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) (adapter->hw.mac_type == e1000_82573)) e1000_transfer_dhcp_info(adapter, skb); - local_irq_save(flags); - if (!spin_trylock(&tx_ring->tx_lock)) { + if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) /* Collision - tell upper layer to requeue */ - local_irq_restore(flags); return NETDEV_TX_LOCKED; - } /* need: count + 2 desc gap to keep tail from touching * head, otherwise try next time */ @@ -4227,9 +4237,12 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter, netdev_alloc_skb(netdev, length + NET_IP_ALIGN); if (new_skb) { skb_reserve(new_skb, NET_IP_ALIGN); - memcpy(new_skb->data - NET_IP_ALIGN, - skb->data - NET_IP_ALIGN, - length + NET_IP_ALIGN); + skb_copy_to_linear_data_offset(new_skb, + -NET_IP_ALIGN, + (skb->data - + NET_IP_ALIGN), + (length + + NET_IP_ALIGN)); /* save the skb in buffer_info as good */ buffer_info->skb = skb; skb = new_skb; @@ -4391,7 +4404,7 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, PCI_DMA_FROMDEVICE); vaddr = kmap_atomic(ps_page->ps_page[0], KM_SKB_DATA_SOFTIRQ); - memcpy(skb->tail, vaddr, l1); + memcpy(skb_tail_pointer(skb), vaddr, l1); kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); pci_dma_sync_single_for_device(pdev, ps_page_dma->ps_page_dma[0], |