From c1605eb37aa658b810a5a7080412d656ddce2f76 Mon Sep 17 00:00:00 2001 From: Jeff Kirsher Date: Thu, 2 Mar 2006 18:16:38 -0800 Subject: [PATCH] e1000: Remove Multiqueue code until we have support for MSI-X in our hardware Signed-off-by: Jeff Kirsher Signed-off-by: Jesse Brandeburg Signed-off-by: John Ronciak --- drivers/net/e1000/e1000.h | 26 ---- drivers/net/e1000/e1000_ethtool.c | 43 ------ drivers/net/e1000/e1000_main.c | 227 +----------------------------- 3 files changed, 4 insertions(+), 292 deletions(-) diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h index 99baf0e099fc..658f36ad8b4f 100644 --- a/drivers/net/e1000/e1000.h +++ b/drivers/net/e1000/e1000.h @@ -83,10 +83,6 @@ struct e1000_adapter; #include "e1000_hw.h" -#ifdef CONFIG_E1000_MQ -#include -#include -#endif #ifdef DBG #define E1000_DBG(args...) printk(KERN_DEBUG "e1000: " args) @@ -169,12 +165,6 @@ struct e1000_buffer { uint16_t next_to_watch; }; -#ifdef CONFIG_E1000_MQ -struct e1000_queue_stats { - uint64_t packets; - uint64_t bytes; -}; -#endif struct e1000_ps_page { struct page *ps_page[PS_PAGE_BUFFERS]; }; struct e1000_ps_page_dma { uint64_t ps_page_dma[PS_PAGE_BUFFERS]; }; @@ -198,12 +188,7 @@ struct e1000_tx_ring { spinlock_t tx_lock; uint16_t tdh; uint16_t tdt; - boolean_t last_tx_tso; - -#ifdef CONFIG_E1000_MQ - struct e1000_queue_stats tx_stats; -#endif }; struct e1000_rx_ring { @@ -230,9 +215,6 @@ struct e1000_rx_ring { uint16_t rdh; uint16_t rdt; -#ifdef CONFIG_E1000_MQ - struct e1000_queue_stats rx_stats; -#endif }; #define E1000_DESC_UNUSED(R) \ @@ -278,9 +260,6 @@ struct e1000_adapter { /* TX */ struct e1000_tx_ring *tx_ring; /* One per active queue */ -#ifdef CONFIG_E1000_MQ - struct e1000_tx_ring **cpu_tx_ring; /* per-cpu */ -#endif unsigned long tx_queue_len; uint32_t txd_cmd; uint32_t tx_int_delay; @@ -313,11 +292,6 @@ struct e1000_adapter { struct e1000_rx_ring *rx_ring; /* One per active queue */ #ifdef CONFIG_E1000_NAPI struct net_device *polling_netdev; /* One per active queue */ -#endif -#ifdef CONFIG_E1000_MQ - struct net_device **cpu_netdev; /* per-cpu */ - struct call_async_data_struct rx_sched_call_data; - cpumask_t cpumask; #endif int num_tx_queues; int num_rx_queues; diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c index 5cedc81786e3..c7b47911f003 100644 --- a/drivers/net/e1000/e1000_ethtool.c +++ b/drivers/net/e1000/e1000_ethtool.c @@ -97,14 +97,7 @@ static const struct e1000_stats e1000_gstrings_stats[] = { { "alloc_rx_buff_failed", E1000_STAT(alloc_rx_buff_failed) }, }; -#ifdef CONFIG_E1000_MQ -#define E1000_QUEUE_STATS_LEN \ - (((struct e1000_adapter *)netdev->priv)->num_tx_queues + \ - ((struct e1000_adapter *)netdev->priv)->num_rx_queues) \ - * (sizeof(struct e1000_queue_stats) / sizeof(uint64_t)) -#else #define E1000_QUEUE_STATS_LEN 0 -#endif #define E1000_GLOBAL_STATS_LEN \ sizeof(e1000_gstrings_stats) / sizeof(struct e1000_stats) #define E1000_STATS_LEN (E1000_GLOBAL_STATS_LEN + E1000_QUEUE_STATS_LEN) @@ -1799,11 +1792,6 @@ e1000_get_ethtool_stats(struct net_device *netdev, struct ethtool_stats *stats, uint64_t *data) { struct e1000_adapter *adapter = netdev_priv(netdev); -#ifdef CONFIG_E1000_MQ - uint64_t *queue_stat; - int stat_count = sizeof(struct e1000_queue_stats) / sizeof(uint64_t); - int j, k; -#endif int i; e1000_update_stats(adapter); @@ -1812,29 +1800,12 @@ e1000_get_ethtool_stats(struct net_device *netdev, data[i] = (e1000_gstrings_stats[i].sizeof_stat == sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p; } -#ifdef CONFIG_E1000_MQ - for (j = 0; j < adapter->num_tx_queues; j++) { - queue_stat = (uint64_t *)&adapter->tx_ring[j].tx_stats; - for (k = 0; k < stat_count; k++) - data[i + k] = queue_stat[k]; - i += k; - } - for (j = 0; j < adapter->num_rx_queues; j++) { - queue_stat = (uint64_t *)&adapter->rx_ring[j].rx_stats; - for (k = 0; k < stat_count; k++) - data[i + k] = queue_stat[k]; - i += k; - } -#endif /* BUG_ON(i != E1000_STATS_LEN); */ } static void e1000_get_strings(struct net_device *netdev, uint32_t stringset, uint8_t *data) { -#ifdef CONFIG_E1000_MQ - struct e1000_adapter *adapter = netdev_priv(netdev); -#endif uint8_t *p = data; int i; @@ -1849,20 +1820,6 @@ e1000_get_strings(struct net_device *netdev, uint32_t stringset, uint8_t *data) ETH_GSTRING_LEN); p += ETH_GSTRING_LEN; } -#ifdef CONFIG_E1000_MQ - for (i = 0; i < adapter->num_tx_queues; i++) { - sprintf(p, "tx_queue_%u_packets", i); - p += ETH_GSTRING_LEN; - sprintf(p, "tx_queue_%u_bytes", i); - p += ETH_GSTRING_LEN; - } - for (i = 0; i < adapter->num_rx_queues; i++) { - sprintf(p, "rx_queue_%u_packets", i); - p += ETH_GSTRING_LEN; - sprintf(p, "rx_queue_%u_bytes", i); - p += ETH_GSTRING_LEN; - } -#endif /* BUG_ON(p - data != E1000_STATS_LEN * ETH_GSTRING_LEN); */ break; } diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 5b7d0f425af2..af87eb04d832 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -103,7 +103,7 @@ static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; #else #define DRIVERNAPI "-NAPI" #endif -#define DRV_VERSION "6.3.9-k4"DRIVERNAPI +#define DRV_VERSION "7.0.33-k2"DRIVERNAPI char e1000_driver_version[] = DRV_VERSION; static char e1000_copyright[] = "Copyright (c) 1999-2005 Intel Corporation."; @@ -191,9 +191,6 @@ static void e1000_exit_module(void); static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); static void __devexit e1000_remove(struct pci_dev *pdev); static int e1000_alloc_queues(struct e1000_adapter *adapter); -#ifdef CONFIG_E1000_MQ -static void e1000_setup_queue_mapping(struct e1000_adapter *adapter); -#endif static int e1000_sw_init(struct e1000_adapter *adapter); static int e1000_open(struct net_device *netdev); static int e1000_close(struct net_device *netdev); @@ -265,10 +262,6 @@ static int e1000_resume(struct pci_dev *pdev); static void e1000_netpoll (struct net_device *netdev); #endif -#ifdef CONFIG_E1000_MQ -/* for multiple Rx queues */ -void e1000_rx_schedule(void *data); -#endif /* Exported from other modules */ @@ -502,10 +495,6 @@ e1000_up(struct e1000_adapter *adapter) return err; } -#ifdef CONFIG_E1000_MQ - e1000_setup_queue_mapping(adapter); -#endif - adapter->tx_queue_len = netdev->tx_queue_len; mod_timer(&adapter->watchdog_timer, jiffies); @@ -526,9 +515,7 @@ e1000_down(struct e1000_adapter *adapter) e1000_check_mng_mode(&adapter->hw); e1000_irq_disable(adapter); -#ifdef CONFIG_E1000_MQ - while (atomic_read(&adapter->rx_sched_call_data.count) != 0); -#endif + free_irq(adapter->pdev->irq, netdev); #ifdef CONFIG_PCI_MSI if (adapter->hw.mac_type > e1000_82547_rev_2 && @@ -972,10 +959,6 @@ e1000_remove(struct pci_dev *pdev) iounmap(adapter->hw.hw_addr); pci_release_regions(pdev); -#ifdef CONFIG_E1000_MQ - free_percpu(adapter->cpu_netdev); - free_percpu(adapter->cpu_tx_ring); -#endif free_netdev(netdev); pci_disable_device(pdev); @@ -1056,40 +1039,8 @@ e1000_sw_init(struct e1000_adapter *adapter) hw->master_slave = E1000_MASTER_SLAVE; } -#ifdef CONFIG_E1000_MQ - /* Number of supported queues */ - switch (hw->mac_type) { - case e1000_82571: - case e1000_82572: - /* These controllers support 2 tx queues, but with a single - * qdisc implementation, multiple tx queues aren't quite as - * interesting. If we can find a logical way of mapping - * flows to a queue, then perhaps we can up the num_tx_queue - * count back to its default. Until then, we run the risk of - * terrible performance due to SACK overload. */ - adapter->num_tx_queues = 1; - adapter->num_rx_queues = 2; - break; - default: - adapter->num_tx_queues = 1; - adapter->num_rx_queues = 1; - break; - } - adapter->num_rx_queues = min(adapter->num_rx_queues, num_online_cpus()); - adapter->num_tx_queues = min(adapter->num_tx_queues, num_online_cpus()); - DPRINTK(DRV, INFO, "Multiqueue Enabled: Rx Queue count = %u %s\n", - adapter->num_rx_queues, - ((adapter->num_rx_queues == 1) - ? ((num_online_cpus() > 1) - ? "(due to unsupported feature in current adapter)" - : "(due to unsupported system configuration)") - : "")); - DPRINTK(DRV, INFO, "Multiqueue Enabled: Tx Queue count = %u\n", - adapter->num_tx_queues); -#else adapter->num_tx_queues = 1; adapter->num_rx_queues = 1; -#endif if (e1000_alloc_queues(adapter)) { DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); @@ -1152,51 +1103,9 @@ e1000_alloc_queues(struct e1000_adapter *adapter) memset(adapter->polling_netdev, 0, size); #endif -#ifdef CONFIG_E1000_MQ - adapter->rx_sched_call_data.func = e1000_rx_schedule; - adapter->rx_sched_call_data.info = adapter->netdev; - - adapter->cpu_netdev = alloc_percpu(struct net_device *); - adapter->cpu_tx_ring = alloc_percpu(struct e1000_tx_ring *); -#endif - return E1000_SUCCESS; } -#ifdef CONFIG_E1000_MQ -static void __devinit -e1000_setup_queue_mapping(struct e1000_adapter *adapter) -{ - int i, cpu; - - adapter->rx_sched_call_data.func = e1000_rx_schedule; - adapter->rx_sched_call_data.info = adapter->netdev; - cpus_clear(adapter->rx_sched_call_data.cpumask); - - adapter->cpu_netdev = alloc_percpu(struct net_device *); - adapter->cpu_tx_ring = alloc_percpu(struct e1000_tx_ring *); - - lock_cpu_hotplug(); - i = 0; - for_each_online_cpu(cpu) { - *per_cpu_ptr(adapter->cpu_tx_ring, cpu) = &adapter->tx_ring[i % adapter->num_tx_queues]; - /* This is incomplete because we'd like to assign separate - * physical cpus to these netdev polling structures and - * avoid saturating a subset of cpus. - */ - if (i < adapter->num_rx_queues) { - *per_cpu_ptr(adapter->cpu_netdev, cpu) = &adapter->polling_netdev[i]; - adapter->rx_ring[i].cpu = cpu; - cpu_set(cpu, adapter->cpumask); - } else - *per_cpu_ptr(adapter->cpu_netdev, cpu) = NULL; - - i++; - } - unlock_cpu_hotplug(); -} -#endif - /** * e1000_open - Called when a network interface is made active * @netdev: network interface device structure @@ -1435,18 +1344,6 @@ e1000_configure_tx(struct e1000_adapter *adapter) /* Setup the HW Tx Head and Tail descriptor pointers */ switch (adapter->num_tx_queues) { - case 2: - tdba = adapter->tx_ring[1].dma; - tdlen = adapter->tx_ring[1].count * - sizeof(struct e1000_tx_desc); - E1000_WRITE_REG(hw, TDBAL1, (tdba & 0x00000000ffffffffULL)); - E1000_WRITE_REG(hw, TDBAH1, (tdba >> 32)); - E1000_WRITE_REG(hw, TDLEN1, tdlen); - E1000_WRITE_REG(hw, TDH1, 0); - E1000_WRITE_REG(hw, TDT1, 0); - adapter->tx_ring[1].tdh = E1000_TDH1; - adapter->tx_ring[1].tdt = E1000_TDT1; - /* Fall Through */ case 1: default: tdba = adapter->tx_ring[0].dma; @@ -1790,10 +1687,6 @@ e1000_configure_rx(struct e1000_adapter *adapter) uint64_t rdba; struct e1000_hw *hw = &adapter->hw; uint32_t rdlen, rctl, rxcsum, ctrl_ext; -#ifdef CONFIG_E1000_MQ - uint32_t reta, mrqc; - int i; -#endif if (adapter->rx_ps_pages) { rdlen = adapter->rx_ring[0].count * @@ -1837,18 +1730,6 @@ e1000_configure_rx(struct e1000_adapter *adapter) /* Setup the HW Rx Head and Tail Descriptor Pointers and * the Base and Length of the Rx Descriptor Ring */ switch (adapter->num_rx_queues) { -#ifdef CONFIG_E1000_MQ - case 2: - rdba = adapter->rx_ring[1].dma; - E1000_WRITE_REG(hw, RDBAL1, (rdba & 0x00000000ffffffffULL)); - E1000_WRITE_REG(hw, RDBAH1, (rdba >> 32)); - E1000_WRITE_REG(hw, RDLEN1, rdlen); - E1000_WRITE_REG(hw, RDH1, 0); - E1000_WRITE_REG(hw, RDT1, 0); - adapter->rx_ring[1].rdh = E1000_RDH1; - adapter->rx_ring[1].rdt = E1000_RDT1; - /* Fall Through */ -#endif case 1: default: rdba = adapter->rx_ring[0].dma; @@ -1862,46 +1743,6 @@ e1000_configure_rx(struct e1000_adapter *adapter) break; } -#ifdef CONFIG_E1000_MQ - if (adapter->num_rx_queues > 1) { - uint32_t random[10]; - - get_random_bytes(&random[0], 40); - - if (hw->mac_type <= e1000_82572) { - E1000_WRITE_REG(hw, RSSIR, 0); - E1000_WRITE_REG(hw, RSSIM, 0); - } - - switch (adapter->num_rx_queues) { - case 2: - default: - reta = 0x00800080; - mrqc = E1000_MRQC_ENABLE_RSS_2Q; - break; - } - - /* Fill out redirection table */ - for (i = 0; i < 32; i++) - E1000_WRITE_REG_ARRAY(hw, RETA, i, reta); - /* Fill out hash function seeds */ - for (i = 0; i < 10; i++) - E1000_WRITE_REG_ARRAY(hw, RSSRK, i, random[i]); - - mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 | - E1000_MRQC_RSS_FIELD_IPV4_TCP); - E1000_WRITE_REG(hw, MRQC, mrqc); - } - - /* Multiqueue and packet checksumming are mutually exclusive. */ - if (hw->mac_type >= e1000_82571) { - rxcsum = E1000_READ_REG(hw, RXCSUM); - rxcsum |= E1000_RXCSUM_PCSD; - E1000_WRITE_REG(hw, RXCSUM, rxcsum); - } - -#else - /* Enable 82543 Receive Checksum Offload for TCP and UDP */ if (hw->mac_type >= e1000_82543) { rxcsum = E1000_READ_REG(hw, RXCSUM); @@ -1920,7 +1761,6 @@ e1000_configure_rx(struct e1000_adapter *adapter) } E1000_WRITE_REG(hw, RXCSUM, rxcsum); } -#endif /* CONFIG_E1000_MQ */ if (hw->mac_type == e1000_82573) E1000_WRITE_REG(hw, ERT, 0x0100); @@ -2465,9 +2305,6 @@ e1000_watchdog_task(struct e1000_adapter *adapter) e1000_update_adaptive(&adapter->hw); -#ifdef CONFIG_E1000_MQ - txdr = *per_cpu_ptr(adapter->cpu_tx_ring, smp_processor_id()); -#endif if (!netif_carrier_ok(netdev)) { if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { /* We've lost link, so the controller stops DMA, @@ -2881,11 +2718,7 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) unsigned int f; len -= skb->data_len; -#ifdef CONFIG_E1000_MQ - tx_ring = *per_cpu_ptr(adapter->cpu_tx_ring, smp_processor_id()); -#else tx_ring = adapter->tx_ring; -#endif if (unlikely(skb->len <= 0)) { dev_kfree_skb_any(skb); @@ -3288,29 +3121,6 @@ e1000_update_stats(struct e1000_adapter *adapter) spin_unlock_irqrestore(&adapter->stats_lock, flags); } -#ifdef CONFIG_E1000_MQ -void -e1000_rx_schedule(void *data) -{ - struct net_device *poll_dev, *netdev = data; - struct e1000_adapter *adapter = netdev->priv; - int this_cpu = get_cpu(); - - poll_dev = *per_cpu_ptr(adapter->cpu_netdev, this_cpu); - if (poll_dev == NULL) { - put_cpu(); - return; - } - - if (likely(netif_rx_schedule_prep(poll_dev))) - __netif_rx_schedule(poll_dev); - else - e1000_irq_enable(adapter); - - put_cpu(); -} -#endif - /** * e1000_intr - Interrupt Handler * @irq: interrupt number @@ -3355,26 +3165,11 @@ e1000_intr(int irq, void *data, struct pt_regs *regs) E1000_WRITE_REG(hw, IMC, ~0); E1000_WRITE_FLUSH(hw); } -#ifdef CONFIG_E1000_MQ - if (atomic_read(&adapter->rx_sched_call_data.count) == 0) { - /* We must setup the cpumask once count == 0 since - * each cpu bit is cleared when the work is done. */ - adapter->rx_sched_call_data.cpumask = adapter->cpumask; - atomic_add(adapter->num_rx_queues - 1, &adapter->irq_sem); - atomic_set(&adapter->rx_sched_call_data.count, - adapter->num_rx_queues); - smp_call_async_mask(&adapter->rx_sched_call_data); - } else { - printk("call_data.count == %u\n", atomic_read(&adapter->rx_sched_call_data.count)); - } -#else /* if !CONFIG_E1000_MQ */ if (likely(netif_rx_schedule_prep(&adapter->polling_netdev[0]))) __netif_rx_schedule(&adapter->polling_netdev[0]); else e1000_irq_enable(adapter); -#endif /* CONFIG_E1000_MQ */ - -#else /* if !CONFIG_E1000_NAPI */ +#else /* Writing IMC and IMS is needed for 82547. * Due to Hub Link bus being occupied, an interrupt * de-assertion message is not able to be sent. @@ -3398,7 +3193,7 @@ e1000_intr(int irq, void *data, struct pt_regs *regs) if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) e1000_irq_enable(adapter); -#endif /* CONFIG_E1000_NAPI */ +#endif return IRQ_HANDLED; } @@ -3486,18 +3281,12 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter, buffer_info = &tx_ring->buffer_info[i]; cleaned = (i == eop); -#ifdef CONFIG_E1000_MQ - tx_ring->tx_stats.bytes += buffer_info->length; -#endif e1000_unmap_and_free_tx_resource(adapter, buffer_info); memset(tx_desc, 0, sizeof(struct e1000_tx_desc)); if (unlikely(++i == tx_ring->count)) i = 0; } -#ifdef CONFIG_E1000_MQ - tx_ring->tx_stats.packets++; -#endif eop = tx_ring->buffer_info[i].next_to_watch; eop_desc = E1000_TX_DESC(*tx_ring, eop); @@ -3733,10 +3522,6 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter, } #endif /* CONFIG_E1000_NAPI */ netdev->last_rx = jiffies; -#ifdef CONFIG_E1000_MQ - rx_ring->rx_stats.packets++; - rx_ring->rx_stats.bytes += length; -#endif next_desc: rx_desc->status = 0; @@ -3878,10 +3663,6 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, } #endif /* CONFIG_E1000_NAPI */ netdev->last_rx = jiffies; -#ifdef CONFIG_E1000_MQ - rx_ring->rx_stats.packets++; - rx_ring->rx_stats.bytes += length; -#endif next_desc: rx_desc->wb.middle.status_error &= ~0xFF; -- 2.20.1