diff options
Diffstat (limited to 'drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c')
| -rw-r--r-- | drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 112 |
1 files changed, 69 insertions, 43 deletions
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c index 3787c64ee71..feb85d56c75 100644 --- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c +++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c @@ -26,7 +26,7 @@ #include <linux/ptp_classify.h> #endif -#define DRV_VERSION "1.00" +#define DRV_VERSION "1.01" const char pch_driver_version[] = DRV_VERSION; #define PCI_DEVICE_ID_INTEL_IOH1_GBE 0x8802 /* Pci device ID */ @@ -35,7 +35,7 @@ const char pch_driver_version[] = DRV_VERSION; #define DSC_INIT16 0xC000 #define PCH_GBE_DMA_ALIGN 0 #define PCH_GBE_DMA_PADDING 2 -#define PCH_GBE_WATCHDOG_PERIOD (1 * HZ) /* watchdog time */ +#define PCH_GBE_WATCHDOG_PERIOD (5 * HZ) /* watchdog time */ #define PCH_GBE_COPYBREAK_DEFAULT 256 #define PCH_GBE_PCI_BAR 1 #define PCH_GBE_RESERVE_MEMORY 0x200000 /* 2MB */ @@ -301,7 +301,7 @@ inline void pch_gbe_mac_load_mac_addr(struct pch_gbe_hw *hw) /** * pch_gbe_mac_read_mac_addr - Read MAC address * @hw: Pointer to the HW structure - * Returns + * Returns: * 0: Successful. */ s32 pch_gbe_mac_read_mac_addr(struct pch_gbe_hw *hw) @@ -483,7 +483,7 @@ static void pch_gbe_mac_mc_addr_list_update(struct pch_gbe_hw *hw, /** * pch_gbe_mac_force_mac_fc - Force the MAC's flow control settings * @hw: Pointer to the HW structure - * Returns + * Returns: * 0: Successful. * Negative value: Failed. */ @@ -639,7 +639,7 @@ static void pch_gbe_mac_set_pause_packet(struct pch_gbe_hw *hw) /** * pch_gbe_alloc_queues - Allocate memory for all rings * @adapter: Board private structure to initialize - * Returns + * Returns: * 0: Successfully * Negative value: Failed */ @@ -670,7 +670,7 @@ static void pch_gbe_init_stats(struct pch_gbe_adapter *adapter) /** * pch_gbe_init_phy - Initialize PHY * @adapter: Board private structure to initialize - * Returns + * Returns: * 0: Successfully * Negative value: Failed */ @@ -720,7 +720,7 @@ static int pch_gbe_init_phy(struct pch_gbe_adapter *adapter) * @netdev: Network interface device structure * @addr: Phy ID * @reg: Access location - * Returns + * Returns: * 0: Successfully * Negative value: Failed */ @@ -1364,7 +1364,7 @@ static void pch_gbe_start_receive(struct pch_gbe_hw *hw) * pch_gbe_intr - Interrupt Handler * @irq: Interrupt number * @data: Pointer to a network interface device structure - * Returns + * Returns: * - IRQ_HANDLED: Our interrupt * - IRQ_NONE: Not our interrupt */ @@ -1566,7 +1566,7 @@ static void pch_gbe_alloc_tx_buffers(struct pch_gbe_adapter *adapter, * pch_gbe_clean_tx - Reclaim resources after transmit completes * @adapter: Board private structure * @tx_ring: Tx descriptor ring - * Returns + * Returns: * true: Cleaned the descriptor * false: Not cleaned the descriptor */ @@ -1579,7 +1579,8 @@ pch_gbe_clean_tx(struct pch_gbe_adapter *adapter, struct sk_buff *skb; unsigned int i; unsigned int cleaned_count = 0; - bool cleaned = true; + bool cleaned = false; + int unused, thresh; pr_debug("next_to_clean : %d\n", tx_ring->next_to_clean); @@ -1588,10 +1589,36 @@ pch_gbe_clean_tx(struct pch_gbe_adapter *adapter, pr_debug("gbec_status:0x%04x dma_status:0x%04x\n", tx_desc->gbec_status, tx_desc->dma_status); + unused = PCH_GBE_DESC_UNUSED(tx_ring); + thresh = tx_ring->count - PCH_GBE_TX_WEIGHT; + if ((tx_desc->gbec_status == DSC_INIT16) && (unused < thresh)) + { /* current marked clean, tx queue filling up, do extra clean */ + int j, k; + if (unused < 8) { /* tx queue nearly full */ + pr_debug("clean_tx: transmit queue warning (%x,%x) unused=%d\n", + tx_ring->next_to_clean,tx_ring->next_to_use,unused); + } + + /* current marked clean, scan for more that need cleaning. */ + k = i; + for (j = 0; j < PCH_GBE_TX_WEIGHT; j++) + { + tx_desc = PCH_GBE_TX_DESC(*tx_ring, k); + if (tx_desc->gbec_status != DSC_INIT16) break; /*found*/ + if (++k >= tx_ring->count) k = 0; /*increment, wrap*/ + } + if (j < PCH_GBE_TX_WEIGHT) { + pr_debug("clean_tx: unused=%d loops=%d found tx_desc[%x,%x:%x].gbec_status=%04x\n", + unused,j, i,k, tx_ring->next_to_use, tx_desc->gbec_status); + i = k; /*found one to clean, usu gbec_status==2000.*/ + } + } + while ((tx_desc->gbec_status & DSC_INIT16) == 0x0000) { pr_debug("gbec_status:0x%04x\n", tx_desc->gbec_status); buffer_info = &tx_ring->buffer_info[i]; skb = buffer_info->skb; + cleaned = true; if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_ABT)) { adapter->stats.tx_aborted_errors++; @@ -1639,18 +1666,21 @@ pch_gbe_clean_tx(struct pch_gbe_adapter *adapter, } pr_debug("called pch_gbe_unmap_and_free_tx_resource() %d count\n", cleaned_count); - /* Recover from running out of Tx resources in xmit_frame */ - spin_lock(&tx_ring->tx_lock); - if (unlikely(cleaned && (netif_queue_stopped(adapter->netdev)))) { - netif_wake_queue(adapter->netdev); - adapter->stats.tx_restart_count++; - pr_debug("Tx wake queue\n"); - } + if (cleaned_count > 0) { /*skip this if nothing cleaned*/ + /* Recover from running out of Tx resources in xmit_frame */ + spin_lock(&tx_ring->tx_lock); + if (unlikely(cleaned && (netif_queue_stopped(adapter->netdev)))) + { + netif_wake_queue(adapter->netdev); + adapter->stats.tx_restart_count++; + pr_debug("Tx wake queue\n"); + } - tx_ring->next_to_clean = i; + tx_ring->next_to_clean = i; - pr_debug("next_to_clean : %d\n", tx_ring->next_to_clean); - spin_unlock(&tx_ring->tx_lock); + pr_debug("next_to_clean : %d\n", tx_ring->next_to_clean); + spin_unlock(&tx_ring->tx_lock); + } return cleaned; } @@ -1660,7 +1690,7 @@ pch_gbe_clean_tx(struct pch_gbe_adapter *adapter, * @rx_ring: Rx descriptor ring * @work_done: Completed count * @work_to_do: Request count - * Returns + * Returns: * true: Cleaned the descriptor * false: Not cleaned the descriptor */ @@ -1775,7 +1805,7 @@ pch_gbe_clean_rx(struct pch_gbe_adapter *adapter, * pch_gbe_setup_tx_resources - Allocate Tx resources (Descriptors) * @adapter: Board private structure * @tx_ring: Tx descriptor ring (for a specific queue) to setup - * Returns + * Returns: * 0: Successfully * Negative value: Failed */ @@ -1822,7 +1852,7 @@ int pch_gbe_setup_tx_resources(struct pch_gbe_adapter *adapter, * pch_gbe_setup_rx_resources - Allocate Rx resources (Descriptors) * @adapter: Board private structure * @rx_ring: Rx descriptor ring (for a specific queue) to setup - * Returns + * Returns: * 0: Successfully * Negative value: Failed */ @@ -1899,7 +1929,7 @@ void pch_gbe_free_rx_resources(struct pch_gbe_adapter *adapter, /** * pch_gbe_request_irq - Allocate an interrupt line * @adapter: Board private structure - * Returns + * Returns: * 0: Successfully * Negative value: Failed */ @@ -1932,7 +1962,7 @@ static int pch_gbe_request_irq(struct pch_gbe_adapter *adapter) /** * pch_gbe_up - Up GbE network device * @adapter: Board private structure - * Returns + * Returns: * 0: Successfully * Negative value: Failed */ @@ -1988,6 +2018,7 @@ int pch_gbe_up(struct pch_gbe_adapter *adapter) void pch_gbe_down(struct pch_gbe_adapter *adapter) { struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring; /* signal that we're down so the interrupt handler does not @@ -2004,7 +2035,8 @@ void pch_gbe_down(struct pch_gbe_adapter *adapter) netif_carrier_off(netdev); netif_stop_queue(netdev); - pch_gbe_reset(adapter); + if ((pdev->error_state) && (pdev->error_state != pci_channel_io_normal)) + pch_gbe_reset(adapter); pch_gbe_clean_tx_ring(adapter, adapter->tx_ring); pch_gbe_clean_rx_ring(adapter, adapter->rx_ring); @@ -2018,7 +2050,7 @@ void pch_gbe_down(struct pch_gbe_adapter *adapter) /** * pch_gbe_sw_init - Initialize general software structures (struct pch_gbe_adapter) * @adapter: Board private structure to initialize - * Returns + * Returns: * 0: Successfully * Negative value: Failed */ @@ -2057,7 +2089,7 @@ static int pch_gbe_sw_init(struct pch_gbe_adapter *adapter) /** * pch_gbe_open - Called when a network interface is made active * @netdev: Network interface device structure - * Returns + * Returns: * 0: Successfully * Negative value: Failed */ @@ -2097,7 +2129,7 @@ err_setup_tx: /** * pch_gbe_stop - Disables a network interface * @netdev: Network interface device structure - * Returns + * Returns: * 0: Successfully */ static int pch_gbe_stop(struct net_device *netdev) @@ -2117,7 +2149,7 @@ static int pch_gbe_stop(struct net_device *netdev) * pch_gbe_xmit_frame - Packet transmitting start * @skb: Socket buffer structure * @netdev: Network interface device structure - * Returns + * Returns: * - NETDEV_TX_OK: Normal end * - NETDEV_TX_BUSY: Error end */ @@ -2127,13 +2159,6 @@ static int pch_gbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring; unsigned long flags; - if (unlikely(skb->len > (adapter->hw.mac.max_frame_size - 4))) { - pr_err("Transfer length Error: skb len: %d > max: %d\n", - skb->len, adapter->hw.mac.max_frame_size); - dev_kfree_skb_any(skb); - adapter->stats.tx_length_errors++; - return NETDEV_TX_OK; - } if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) { /* Collision - tell upper layer to requeue */ return NETDEV_TX_LOCKED; @@ -2225,7 +2250,7 @@ static void pch_gbe_set_multi(struct net_device *netdev) * pch_gbe_set_mac - Change the Ethernet Address of the NIC * @netdev: Network interface device structure * @addr: Pointer to an address structure - * Returns + * Returns: * 0: Successfully * -EADDRNOTAVAIL: Failed */ @@ -2256,7 +2281,7 @@ static int pch_gbe_set_mac(struct net_device *netdev, void *addr) * pch_gbe_change_mtu - Change the Maximum Transfer Unit * @netdev: Network interface device structure * @new_mtu: New value for maximum frame size - * Returns + * Returns: * 0: Successfully * -EINVAL: Failed */ @@ -2309,7 +2334,7 @@ static int pch_gbe_change_mtu(struct net_device *netdev, int new_mtu) * pch_gbe_set_features - Reset device after features changed * @netdev: Network interface device structure * @features: New features - * Returns + * Returns: * 0: HW state updated successfully */ static int pch_gbe_set_features(struct net_device *netdev, @@ -2334,7 +2359,7 @@ static int pch_gbe_set_features(struct net_device *netdev, * @netdev: Network interface device structure * @ifr: Pointer to ifr structure * @cmd: Control command - * Returns + * Returns: * 0: Successfully * Negative value: Failed */ @@ -2369,7 +2394,7 @@ static void pch_gbe_tx_timeout(struct net_device *netdev) * pch_gbe_napi_poll - NAPI receive and transfer polling callback * @napi: Pointer of polling device struct * @budget: The maximum number of a packet - * Returns + * Returns: * false: Exit the polling mode * true: Continue the polling mode */ @@ -2387,7 +2412,7 @@ static int pch_gbe_napi_poll(struct napi_struct *napi, int budget) pch_gbe_clean_rx(adapter, adapter->rx_ring, &work_done, budget); cleaned = pch_gbe_clean_tx(adapter, adapter->tx_ring); - if (!cleaned) + if (cleaned) work_done = budget; /* If no Tx and not enough Rx work done, * exit the polling mode @@ -2793,6 +2818,7 @@ static int __init pch_gbe_init_module(void) { int ret; + pr_info("EG20T PCH Gigabit Ethernet Driver - version %s\n",DRV_VERSION); ret = pci_register_driver(&pch_gbe_driver); if (copybreak != PCH_GBE_COPYBREAK_DEFAULT) { if (copybreak == 0) { |