diff options
Diffstat (limited to 'drivers/net/igb/igb_main.c')
| -rw-r--r-- | drivers/net/igb/igb_main.c | 5504 |
1 files changed, 0 insertions, 5504 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c deleted file mode 100644 index be480292aba..00000000000 --- a/drivers/net/igb/igb_main.c +++ /dev/null @@ -1,5504 +0,0 @@ -/******************************************************************************* - - Intel(R) Gigabit Ethernet Linux driver - Copyright(c) 2007-2009 Intel Corporation. - - This program is free software; you can redistribute it and/or modify it - under the terms and conditions of the GNU General Public License, - version 2, as published by the Free Software Foundation. - - This program is distributed in the hope 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., - 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - - The full GNU General Public License is included in this distribution in - the file called "COPYING". - - Contact Information: - e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> - Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - -*******************************************************************************/ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/vmalloc.h> -#include <linux/pagemap.h> -#include <linux/netdevice.h> -#include <linux/ipv6.h> -#include <net/checksum.h> -#include <net/ip6_checksum.h> -#include <linux/net_tstamp.h> -#include <linux/mii.h> -#include <linux/ethtool.h> -#include <linux/if_vlan.h> -#include <linux/pci.h> -#include <linux/pci-aspm.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/if_ether.h> -#include <linux/aer.h> -#ifdef CONFIG_IGB_DCA -#include <linux/dca.h> -#endif -#include "igb.h" - -#define DRV_VERSION "1.3.16-k2" -char igb_driver_name[] = "igb"; -char igb_driver_version[] = DRV_VERSION; -static const char igb_driver_string[] = - "Intel(R) Gigabit Ethernet Network Driver"; -static const char igb_copyright[] = "Copyright (c) 2007-2009 Intel Corporation."; - -static const struct e1000_info *igb_info_tbl[] = { - [board_82575] = &e1000_82575_info, -}; - -static struct pci_device_id igb_pci_tbl[] = { - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, - /* required last entry */ - {0, } -}; - -MODULE_DEVICE_TABLE(pci, igb_pci_tbl); - -void igb_reset(struct igb_adapter *); -static int igb_setup_all_tx_resources(struct igb_adapter *); -static int igb_setup_all_rx_resources(struct igb_adapter *); -static void igb_free_all_tx_resources(struct igb_adapter *); -static void igb_free_all_rx_resources(struct igb_adapter *); -void igb_update_stats(struct igb_adapter *); -static int igb_probe(struct pci_dev *, const struct pci_device_id *); -static void __devexit igb_remove(struct pci_dev *pdev); -static int igb_sw_init(struct igb_adapter *); -static int igb_open(struct net_device *); -static int igb_close(struct net_device *); -static void igb_configure_tx(struct igb_adapter *); -static void igb_configure_rx(struct igb_adapter *); -static void igb_setup_rctl(struct igb_adapter *); -static void igb_clean_all_tx_rings(struct igb_adapter *); -static void igb_clean_all_rx_rings(struct igb_adapter *); -static void igb_clean_tx_ring(struct igb_ring *); -static void igb_clean_rx_ring(struct igb_ring *); -static void igb_set_multi(struct net_device *); -static void igb_update_phy_info(unsigned long); -static void igb_watchdog(unsigned long); -static void igb_watchdog_task(struct work_struct *); -static int igb_xmit_frame_ring_adv(struct sk_buff *, struct net_device *, - struct igb_ring *); -static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *); -static struct net_device_stats *igb_get_stats(struct net_device *); -static int igb_change_mtu(struct net_device *, int); -static int igb_set_mac(struct net_device *, void *); -static irqreturn_t igb_intr(int irq, void *); -static irqreturn_t igb_intr_msi(int irq, void *); -static irqreturn_t igb_msix_other(int irq, void *); -static irqreturn_t igb_msix_rx(int irq, void *); -static irqreturn_t igb_msix_tx(int irq, void *); -#ifdef CONFIG_IGB_DCA -static void igb_update_rx_dca(struct igb_ring *); -static void igb_update_tx_dca(struct igb_ring *); -static void igb_setup_dca(struct igb_adapter *); -#endif /* CONFIG_IGB_DCA */ -static bool igb_clean_tx_irq(struct igb_ring *); -static int igb_poll(struct napi_struct *, int); -static bool igb_clean_rx_irq_adv(struct igb_ring *, int *, int); -static void igb_alloc_rx_buffers_adv(struct igb_ring *, int); -static int igb_ioctl(struct net_device *, struct ifreq *, int cmd); -static void igb_tx_timeout(struct net_device *); -static void igb_reset_task(struct work_struct *); -static void igb_vlan_rx_register(struct net_device *, struct vlan_group *); -static void igb_vlan_rx_add_vid(struct net_device *, u16); -static void igb_vlan_rx_kill_vid(struct net_device *, u16); -static void igb_restore_vlan(struct igb_adapter *); -static void igb_ping_all_vfs(struct igb_adapter *); -static void igb_msg_task(struct igb_adapter *); -static int igb_rcv_msg_from_vf(struct igb_adapter *, u32); -static inline void igb_set_rah_pool(struct e1000_hw *, int , int); -static void igb_set_mc_list_pools(struct igb_adapter *, int, u16); -static void igb_vmm_control(struct igb_adapter *); -static inline void igb_set_vmolr(struct e1000_hw *, int); -static inline int igb_set_vf_rlpml(struct igb_adapter *, int, int); -static int igb_set_vf_mac(struct igb_adapter *adapter, int, unsigned char *); -static void igb_restore_vf_multicasts(struct igb_adapter *adapter); - -#ifdef CONFIG_PM -static int igb_suspend(struct pci_dev *, pm_message_t); -static int igb_resume(struct pci_dev *); -#endif -static void igb_shutdown(struct pci_dev *); -#ifdef CONFIG_IGB_DCA -static int igb_notify_dca(struct notifier_block *, unsigned long, void *); -static struct notifier_block dca_notifier = { - .notifier_call = igb_notify_dca, - .next = NULL, - .priority = 0 -}; -#endif -#ifdef CONFIG_NET_POLL_CONTROLLER -/* for netdump / net console */ -static void igb_netpoll(struct net_device *); -#endif -#ifdef CONFIG_PCI_IOV -static unsigned int max_vfs = 0; -module_param(max_vfs, uint, 0); -MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate " - "per physical function"); -#endif /* CONFIG_PCI_IOV */ - -static pci_ers_result_t igb_io_error_detected(struct pci_dev *, - pci_channel_state_t); -static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); -static void igb_io_resume(struct pci_dev *); - -static struct pci_error_handlers igb_err_handler = { - .error_detected = igb_io_error_detected, - .slot_reset = igb_io_slot_reset, - .resume = igb_io_resume, -}; - - -static struct pci_driver igb_driver = { - .name = igb_driver_name, - .id_table = igb_pci_tbl, - .probe = igb_probe, - .remove = __devexit_p(igb_remove), -#ifdef CONFIG_PM - /* Power Managment Hooks */ - .suspend = igb_suspend, - .resume = igb_resume, -#endif - .shutdown = igb_shutdown, - .err_handler = &igb_err_handler -}; - -static int global_quad_port_a; /* global quad port a indication */ - -MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); -MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); - -/** - * Scale the NIC clock cycle by a large factor so that - * relatively small clock corrections can be added or - * substracted at each clock tick. The drawbacks of a - * large factor are a) that the clock register overflows - * more quickly (not such a big deal) and b) that the - * increment per tick has to fit into 24 bits. - * - * Note that - * TIMINCA = IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS * - * IGB_TSYNC_SCALE - * TIMINCA += TIMINCA * adjustment [ppm] / 1e9 - * - * The base scale factor is intentionally a power of two - * so that the division in %struct timecounter can be done with - * a shift. - */ -#define IGB_TSYNC_SHIFT (19) -#define IGB_TSYNC_SCALE (1<<IGB_TSYNC_SHIFT) - -/** - * The duration of one clock cycle of the NIC. - * - * @todo This hard-coded value is part of the specification and might change - * in future hardware revisions. Add revision check. - */ -#define IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS 16 - -#if (IGB_TSYNC_SCALE * IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS) >= (1<<24) -# error IGB_TSYNC_SCALE and/or IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS are too large to fit into TIMINCA -#endif - -/** - * igb_read_clock - read raw cycle counter (to be used by time counter) - */ -static cycle_t igb_read_clock(const struct cyclecounter *tc) -{ - struct igb_adapter *adapter = - container_of(tc, struct igb_adapter, cycles); - struct e1000_hw *hw = &adapter->hw; - u64 stamp; - - stamp = rd32(E1000_SYSTIML); - stamp |= (u64)rd32(E1000_SYSTIMH) << 32ULL; - - return stamp; -} - -#ifdef DEBUG -/** - * igb_get_hw_dev_name - return device name string - * used by hardware layer to print debugging information - **/ -char *igb_get_hw_dev_name(struct e1000_hw *hw) -{ - struct igb_adapter *adapter = hw->back; - return adapter->netdev->name; -} - -/** - * igb_get_time_str - format current NIC and system time as string - */ -static char *igb_get_time_str(struct igb_adapter *adapter, - char buffer[160]) -{ - cycle_t hw = adapter->cycles.read(&adapter->cycles); - struct timespec nic = ns_to_timespec(timecounter_read(&adapter->clock)); - struct timespec sys; - struct timespec delta; - getnstimeofday(&sys); - - delta = timespec_sub(nic, sys); - - sprintf(buffer, - "HW %llu, NIC %ld.%09lus, SYS %ld.%09lus, NIC-SYS %lds + %09luns", - hw, - (long)nic.tv_sec, nic.tv_nsec, - (long)sys.tv_sec, sys.tv_nsec, - (long)delta.tv_sec, delta.tv_nsec); - - return buffer; -} -#endif - -/** - * igb_desc_unused - calculate if we have unused descriptors - **/ -static int igb_desc_unused(struct igb_ring *ring) -{ - if (ring->next_to_clean > ring->next_to_use) - return ring->next_to_clean - ring->next_to_use - 1; - - return ring->count + ring->next_to_clean - ring->next_to_use - 1; -} - -/** - * igb_init_module - Driver Registration Routine - * - * igb_init_module is the first routine called when the driver is - * loaded. All it does is register with the PCI subsystem. - **/ -static int __init igb_init_module(void) -{ - int ret; - printk(KERN_INFO "%s - version %s\n", - igb_driver_string, igb_driver_version); - - printk(KERN_INFO "%s\n", igb_copyright); - - global_quad_port_a = 0; - -#ifdef CONFIG_IGB_DCA - dca_register_notify(&dca_notifier); -#endif - - ret = pci_register_driver(&igb_driver); - return ret; -} - -module_init(igb_init_module); - -/** - * igb_exit_module - Driver Exit Cleanup Routine - * - * igb_exit_module is called just before the driver is removed - * from memory. - **/ -static void __exit igb_exit_module(void) -{ -#ifdef CONFIG_IGB_DCA - dca_unregister_notify(&dca_notifier); -#endif - pci_unregister_driver(&igb_driver); -} - -module_exit(igb_exit_module); - -#define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1)) -/** - * igb_cache_ring_register - Descriptor ring to register mapping - * @adapter: board private structure to initialize - * - * Once we know the feature-set enabled for the device, we'll cache - * the register offset the descriptor ring is assigned to. - **/ -static void igb_cache_ring_register(struct igb_adapter *adapter) -{ - int i; - unsigned int rbase_offset = adapter->vfs_allocated_count; - - switch (adapter->hw.mac.type) { - case e1000_82576: - /* The queues are allocated for virtualization such that VF 0 - * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc. - * In order to avoid collision we start at the first free queue - * and continue consuming queues in the same sequence - */ - for (i = 0; i < adapter->num_rx_queues; i++) - adapter->rx_ring[i].reg_idx = rbase_offset + - Q_IDX_82576(i); - for (i = 0; i < adapter->num_tx_queues; i++) - adapter->tx_ring[i].reg_idx = rbase_offset + - Q_IDX_82576(i); - break; - case e1000_82575: - default: - for (i = 0; i < adapter->num_rx_queues; i++) - adapter->rx_ring[i].reg_idx = i; - for (i = 0; i < adapter->num_tx_queues; i++) - adapter->tx_ring[i].reg_idx = i; - break; - } -} - -/** - * igb_alloc_queues - Allocate memory for all rings - * @adapter: board private structure to initialize - * - * We allocate one ring per queue at run-time since we don't know the - * number of queues at compile-time. - **/ -static int igb_alloc_queues(struct igb_adapter *adapter) -{ - int i; - - adapter->tx_ring = kcalloc(adapter->num_tx_queues, - sizeof(struct igb_ring), GFP_KERNEL); - if (!adapter->tx_ring) - return -ENOMEM; - - adapter->rx_ring = kcalloc(adapter->num_rx_queues, - sizeof(struct igb_ring), GFP_KERNEL); - if (!adapter->rx_ring) { - kfree(adapter->tx_ring); - return -ENOMEM; - } - - adapter->rx_ring->buddy = adapter->tx_ring; - - for (i = 0; i < adapter->num_tx_queues; i++) { - struct igb_ring *ring = &(adapter->tx_ring[i]); - ring->count = adapter->tx_ring_count; - ring->adapter = adapter; - ring->queue_index = i; - } - for (i = 0; i < adapter->num_rx_queues; i++) { - struct igb_ring *ring = &(adapter->rx_ring[i]); - ring->count = adapter->rx_ring_count; - ring->adapter = adapter; - ring->queue_index = i; - ring->itr_register = E1000_ITR; - - /* set a default napi handler for each rx_ring */ - netif_napi_add(adapter->netdev, &ring->napi, igb_poll, 64); - } - - igb_cache_ring_register(adapter); - return 0; -} - -static void igb_free_queues(struct igb_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_rx_queues; i++) - netif_napi_del(&adapter->rx_ring[i].napi); - - adapter->num_rx_queues = 0; - adapter->num_tx_queues = 0; - - kfree(adapter->tx_ring); - kfree(adapter->rx_ring); -} - -#define IGB_N0_QUEUE -1 -static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue, - int tx_queue, int msix_vector) -{ - u32 msixbm = 0; - struct e1000_hw *hw = &adapter->hw; - u32 ivar, index; - - switch (hw->mac.type) { - case e1000_82575: - /* The 82575 assigns vectors using a bitmask, which matches the - bitmask for the EICR/EIMS/EIMC registers. To assign one - or more queues to a vector, we write the appropriate bits - into the MSIXBM register for that vector. */ - if (rx_queue > IGB_N0_QUEUE) { - msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; - adapter->rx_ring[rx_queue].eims_value = msixbm; - } - if (tx_queue > IGB_N0_QUEUE) { - msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; - adapter->tx_ring[tx_queue].eims_value = - E1000_EICR_TX_QUEUE0 << tx_queue; - } - array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); - break; - case e1000_82576: - /* 82576 uses a table-based method for assigning vectors. - Each queue has a single entry in the table to which we write - a vector number along with a "valid" bit. Sadly, the layout - of the table is somewhat counterintuitive. */ - if (rx_queue > IGB_N0_QUEUE) { - index = (rx_queue >> 1) + adapter->vfs_allocated_count; - ivar = array_rd32(E1000_IVAR0, index); - if (rx_queue & 0x1) { - /* vector goes into third byte of register */ - ivar = ivar & 0xFF00FFFF; - ivar |= (msix_vector | E1000_IVAR_VALID) << 16; - } else { - /* vector goes into low byte of register */ - ivar = ivar & 0xFFFFFF00; - ivar |= msix_vector | E1000_IVAR_VALID; - } - adapter->rx_ring[rx_queue].eims_value= 1 << msix_vector; - array_wr32(E1000_IVAR0, index, ivar); - } - if (tx_queue > IGB_N0_QUEUE) { - index = (tx_queue >> 1) + adapter->vfs_allocated_count; - ivar = array_rd32(E1000_IVAR0, index); - if (tx_queue & 0x1) { - /* vector goes into high byte of register */ - ivar = ivar & 0x00FFFFFF; - ivar |= (msix_vector | E1000_IVAR_VALID) << 24; - } else { - /* vector goes into second byte of register */ - ivar = ivar & 0xFFFF00FF; - ivar |= (msix_vector | E1000_IVAR_VALID) << 8; - } - adapter->tx_ring[tx_queue].eims_value= 1 << msix_vector; - array_wr32(E1000_IVAR0, index, ivar); - } - break; - default: - BUG(); - break; - } -} - -/** - * igb_configure_msix - Configure MSI-X hardware - * - * igb_configure_msix sets up the hardware to properly - * generate MSI-X interrupts. - **/ -static void igb_configure_msix(struct igb_adapter *adapter) -{ - u32 tmp; - int i, vector = 0; - struct e1000_hw *hw = &adapter->hw; - - adapter->eims_enable_mask = 0; - if (hw->mac.type == e1000_82576) - /* Turn on MSI-X capability first, or our settings - * won't stick. And it will take days to debug. */ - wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE | - E1000_GPIE_PBA | E1000_GPIE_EIAME | - E1000_GPIE_NSICR); - - for (i = 0; i < adapter->num_tx_queues; i++) { - struct igb_ring *tx_ring = &adapter->tx_ring[i]; - igb_assign_vector(adapter, IGB_N0_QUEUE, i, vector++); - adapter->eims_enable_mask |= tx_ring->eims_value; - if (tx_ring->itr_val) - writel(tx_ring->itr_val, - hw->hw_addr + tx_ring->itr_register); - else - writel(1, hw->hw_addr + tx_ring->itr_register); - } - - for (i = 0; i < adapter->num_rx_queues; i++) { - struct igb_ring *rx_ring = &adapter->rx_ring[i]; - rx_ring->buddy = NULL; - igb_assign_vector(adapter, i, IGB_N0_QUEUE, vector++); - adapter->eims_enable_mask |= rx_ring->eims_value; - if (rx_ring->itr_val) - writel(rx_ring->itr_val, - hw->hw_addr + rx_ring->itr_register); - else - writel(1, hw->hw_addr + rx_ring->itr_register); - } - - - /* set vector for other causes, i.e. link changes */ - switch (hw->mac.type) { - case e1000_82575: - array_wr32(E1000_MSIXBM(0), vector++, - E1000_EIMS_OTHER); - - tmp = rd32(E1000_CTRL_EXT); - /* enable MSI-X PBA support*/ - tmp |= E1000_CTRL_EXT_PBA_CLR; - - /* Auto-Mask interrupts upon ICR read. */ - tmp |= E1000_CTRL_EXT_EIAME; - tmp |= E1000_CTRL_EXT_IRCA; - - wr32(E1000_CTRL_EXT, tmp); - adapter->eims_enable_mask |= E1000_EIMS_OTHER; - adapter->eims_other = E1000_EIMS_OTHER; - - break; - - case e1000_82576: - tmp = (vector++ | E1000_IVAR_VALID) << 8; - wr32(E1000_IVAR_MISC, tmp); - - adapter->eims_enable_mask = (1 << (vector)) - 1; - adapter->eims_other = 1 << (vector - 1); - break; - default: - /* do nothing, since nothing else supports MSI-X */ - break; - } /* switch (hw->mac.type) */ - wrfl(); -} - -/** - * igb_request_msix - Initialize MSI-X interrupts - * - * igb_request_msix allocates MSI-X vectors and requests interrupts from the - * kernel. - **/ -static int igb_request_msix(struct igb_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - int i, err = 0, vector = 0; - - vector = 0; - - for (i = 0; i < adapter->num_tx_queues; i++) { - struct igb_ring *ring = &(adapter->tx_ring[i]); - sprintf(ring->name, "%s-tx-%d", netdev->name, i); - err = request_irq(adapter->msix_entries[vector].vector, - &igb_msix_tx, 0, ring->name, - &(adapter->tx_ring[i])); - if (err) - goto out; - ring->itr_register = E1000_EITR(0) + (vector << 2); - ring->itr_val = 976; /* ~4000 ints/sec */ - vector++; - } - for (i = 0; i < adapter->num_rx_queues; i++) { - struct igb_ring *ring = &(adapter->rx_ring[i]); - if (strlen(netdev->name) < (IFNAMSIZ - 5)) - sprintf(ring->name, "%s-rx-%d", netdev->name, i); - else - memcpy(ring->name, netdev->name, IFNAMSIZ); - err = request_irq(adapter->msix_entries[vector].vector, - &igb_msix_rx, 0, ring->name, - &(adapter->rx_ring[i])); - if (err) - goto out; - ring->itr_register = E1000_EITR(0) + (vector << 2); - ring->itr_val = adapter->itr; - vector++; - } - - err = request_irq(adapter->msix_entries[vector].vector, - &igb_msix_other, 0, netdev->name, netdev); - if (err) - goto out; - - igb_configure_msix(adapter); - return 0; -out: - return err; -} - -static void igb_reset_interrupt_capability(struct igb_adapter *adapter) -{ - if (adapter->msix_entries) { - pci_disable_msix(adapter->pdev); - kfree(adapter->msix_entries); - adapter->msix_entries = NULL; - } else if (adapter->flags & IGB_FLAG_HAS_MSI) - pci_disable_msi(adapter->pdev); - return; -} - - -/** - * igb_set_interrupt_capability - set MSI or MSI-X if supported - * - * Attempt to configure interrupts using the best available - * capabilities of the hardware and kernel. - **/ -static void igb_set_interrupt_capability(struct igb_adapter *adapter) -{ - int err; - int numvecs, i; - - /* Number of supported queues. */ - /* Having more queues than CPUs doesn't make sense. */ - adapter->num_rx_queues = min_t(u32, IGB_MAX_RX_QUEUES, num_online_cpus()); - adapter->num_tx_queues = min_t(u32, IGB_MAX_TX_QUEUES, num_online_cpus()); - - numvecs = adapter->num_tx_queues + adapter->num_rx_queues + 1; - adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry), - GFP_KERNEL); - if (!adapter->msix_entries) - goto msi_only; - - for (i = 0; i < numvecs; i++) - adapter->msix_entries[i].entry = i; - - err = pci_enable_msix(adapter->pdev, - adapter->msix_entries, - numvecs); - if (err == 0) - goto out; - - igb_reset_interrupt_capability(adapter); - - /* If we can't do MSI-X, try MSI */ -msi_only: -#ifdef CONFIG_PCI_IOV - /* disable SR-IOV for non MSI-X configurations */ - if (adapter->vf_data) { - struct e1000_hw *hw = &adapter->hw; - /* disable iov and allow time for transactions to clear */ - pci_disable_sriov(adapter->pdev); - msleep(500); - - kfree(adapter->vf_data); - adapter->vf_data = NULL; - wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); - msleep(100); - dev_info(&adapter->pdev->dev, "IOV Disabled\n"); - } -#endif - adapter->num_rx_queues = 1; - adapter->num_tx_queues = 1; - if (!pci_enable_msi(adapter->pdev)) - adapter->flags |= IGB_FLAG_HAS_MSI; -out: - /* Notify the stack of the (possibly) reduced Tx Queue count. */ - adapter->netdev->real_num_tx_queues = adapter->num_tx_queues; - return; -} - -/** - * igb_request_irq - initialize interrupts - * - * Attempts to configure interrupts using the best available - * capabilities of the hardware and kernel. - **/ -static int igb_request_irq(struct igb_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct e1000_hw *hw = &adapter->hw; - int err = 0; - - if (adapter->msix_entries) { - err = igb_request_msix(adapter); - if (!err) - goto request_done; - /* fall back to MSI */ - igb_reset_interrupt_capability(adapter); - if (!pci_enable_msi(adapter->pdev)) - adapter->flags |= IGB_FLAG_HAS_MSI; - igb_free_all_tx_resources(adapter); - igb_free_all_rx_resources(adapter); - adapter->num_rx_queues = 1; - igb_alloc_queues(adapter); - } else { - switch (hw->mac.type) { - case e1000_82575: - wr32(E1000_MSIXBM(0), - (E1000_EICR_RX_QUEUE0 | E1000_EIMS_OTHER)); - break; - case e1000_82576: - wr32(E1000_IVAR0, E1000_IVAR_VALID); - break; - default: - break; - } - } - - if (adapter->flags & IGB_FLAG_HAS_MSI) { - err = request_irq(adapter->pdev->irq, &igb_intr_msi, 0, - netdev->name, netdev); - if (!err) - goto request_done; - /* fall back to legacy interrupts */ - igb_reset_interrupt_capability(adapter); - adapter->flags &= ~IGB_FLAG_HAS_MSI; - } - - err = request_irq(adapter->pdev->irq, &igb_intr, IRQF_SHARED, - netdev->name, netdev); - - if (err) - dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n", - err); - -request_done: - return err; -} - -static void igb_free_irq(struct igb_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - - if (adapter->msix_entries) { - int vector = 0, i; - - for (i = 0; i < adapter->num_tx_queues; i++) - free_irq(adapter->msix_entries[vector++].vector, - &(adapter->tx_ring[i])); - for (i = 0; i < adapter->num_rx_queues; i++) - free_irq(adapter->msix_entries[vector++].vector, - &(adapter->rx_ring[i])); - - free_irq(adapter->msix_entries[vector++].vector, netdev); - return; - } - - free_irq(adapter->pdev->irq, netdev); -} - -/** - * igb_irq_disable - Mask off interrupt generation on the NIC - * @adapter: board private structure - **/ -static void igb_irq_disable(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - - if (adapter->msix_entries) { - wr32(E1000_EIAM, 0); - wr32(E1000_EIMC, ~0); - wr32(E1000_EIAC, 0); - } - - wr32(E1000_IAM, 0); - wr32(E1000_IMC, ~0); - wrfl(); - synchronize_irq(adapter->pdev->irq); -} - -/** - * igb_irq_enable - Enable default interrupt generation settings - * @adapter: board private structure - **/ -static void igb_irq_enable(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - - if (adapter->msix_entries) { - wr32(E1000_EIAC, adapter->eims_enable_mask); - wr32(E1000_EIAM, adapter->eims_enable_mask); - wr32(E1000_EIMS, adapter->eims_enable_mask); - if (adapter->vfs_allocated_count) - wr32(E1000_MBVFIMR, 0xFF); - wr32(E1000_IMS, (E1000_IMS_LSC | E1000_IMS_VMMB | - E1000_IMS_DOUTSYNC)); - } else { - wr32(E1000_IMS, IMS_ENABLE_MASK); - wr32(E1000_IAM, IMS_ENABLE_MASK); - } -} - -static void igb_update_mng_vlan(struct igb_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - u16 vid = adapter->hw.mng_cookie.vlan_id; - u16 old_vid = adapter->mng_vlan_id; - if (adapter->vlgrp) { - if (!vlan_group_get_device(adapter->vlgrp, vid)) { - if (adapter->hw.mng_cookie.status & - E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { - igb_vlan_rx_add_vid(netdev, vid); - adapter->mng_vlan_id = vid; - } else - adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; - - if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && - (vid != old_vid) && - !vlan_group_get_device(adapter->vlgrp, old_vid)) - igb_vlan_rx_kill_vid(netdev, old_vid); - } else - adapter->mng_vlan_id = vid; - } -} - -/** - * igb_release_hw_control - release control of the h/w to f/w - * @adapter: address of board private structure - * - * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. - * For ASF and Pass Through versions of f/w this means that the - * driver is no longer loaded. - * - **/ -static void igb_release_hw_control(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - u32 ctrl_ext; - - /* Let firmware take over control of h/w */ - ctrl_ext = rd32(E1000_CTRL_EXT); - wr32(E1000_CTRL_EXT, - ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); -} - - -/** - * igb_get_hw_control - get control of the h/w from f/w - * @adapter: address of board private structure - * - * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. - * For ASF and Pass Through versions of f/w this means that - * the driver is loaded. - * - **/ -static void igb_get_hw_control(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - u32 ctrl_ext; - - /* Let firmware know the driver has taken over */ - ctrl_ext = rd32(E1000_CTRL_EXT); - wr32(E1000_CTRL_EXT, - ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); -} - -/** - * igb_configure - configure the hardware for RX and TX - * @adapter: private board structure - **/ -static void igb_configure(struct igb_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - int i; - - igb_get_hw_control(adapter); - igb_set_multi(netdev); - - igb_restore_vlan(adapter); - - igb_configure_tx(adapter); - igb_setup_rctl(adapter); - igb_configure_rx(adapter); - - igb_rx_fifo_flush_82575(&adapter->hw); - - /* call igb_desc_unused which always leaves - * at least 1 descriptor unused to make sure - * next_to_use != next_to_clean */ - for (i = 0; i < adapter->num_rx_queues; i++) { - struct igb_ring *ring = &adapter->rx_ring[i]; - igb_alloc_rx_buffers_adv(ring, igb_desc_unused(ring)); - } - - - adapter->tx_queue_len = netdev->tx_queue_len; -} - - -/** - * igb_up - Open the interface and prepare it to handle traffic - * @adapter: board private structure - **/ - -int igb_up(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - int i; - - /* hardware has been reset, we need to reload some things */ - igb_configure(adapter); - - clear_bit(__IGB_DOWN, &adapter->state); - - for (i = 0; i < adapter->num_rx_queues; i++) - napi_enable(&adapter->rx_ring[i].napi); - if (adapter->msix_entries) - igb_configure_msix(adapter); - - igb_vmm_control(adapter); - igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); - igb_set_vmolr(hw, adapter->vfs_allocated_count); - - /* Clear any pending interrupts. */ - rd32(E1000_ICR); - igb_irq_enable(adapter); - - netif_tx_start_all_queues(adapter->netdev); - - /* Fire a link change interrupt to start the watchdog. */ - wr32(E1000_ICS, E1000_ICS_LSC); - return 0; -} - -void igb_down(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - struct net_device *netdev = adapter->netdev; - u32 tctl, rctl; - int i; - - /* signal that we're down so the interrupt handler does not - * reschedule our watchdog timer */ - set_bit(__IGB_DOWN, &adapter->state); - - /* disable receives in the hardware */ - rctl = rd32(E1000_RCTL); - wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); - /* flush and sleep below */ - - netif_tx_stop_all_queues(netdev); - - /* disable transmits in the hardware */ - tctl = rd32(E1000_TCTL); - tctl &= ~E1000_TCTL_EN; - wr32(E1000_TCTL, tctl); - /* flush both disables and wait for them to finish */ - wrfl(); - msleep(10); - - for (i = 0; i < adapter->num_rx_queues; i++) - napi_disable(&adapter->rx_ring[i].napi); - - igb_irq_disable(adapter); - - del_timer_sync(&adapter->watchdog_timer); - del_timer_sync(&adapter->phy_info_timer); - - netdev->tx_queue_len = adapter->tx_queue_len; - netif_carrier_off(netdev); - - /* record the stats before reset*/ - igb_update_stats(adapter); - - adapter->link_speed = 0; - adapter->link_duplex = 0; - - if (!pci_channel_offline(adapter->pdev)) - igb_reset(adapter); - igb_clean_all_tx_rings(adapter); - igb_clean_all_rx_rings(adapter); -#ifdef CONFIG_IGB_DCA - - /* since we reset the hardware DCA settings were cleared */ - igb_setup_dca(adapter); -#endif -} - -void igb_reinit_locked(struct igb_adapter *adapter) -{ - WARN_ON(in_interrupt()); - while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) - msleep(1); - igb_down(adapter); - igb_up(adapter); - clear_bit(__IGB_RESETTING, &adapter->state); -} - -void igb_reset(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - struct e1000_mac_info *mac = &hw->mac; - struct e1000_fc_info *fc = &hw->fc; - u32 pba = 0, tx_space, min_tx_space, min_rx_space; - u16 hwm; - - /* Repartition Pba for greater than 9k mtu - * To take effect CTRL.RST is required. - */ - switch (mac->type) { - case e1000_82576: - pba = E1000_PBA_64K; - break; - case e1000_82575: - default: - pba = E1000_PBA_34K; - break; - } - - if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) && - (mac->type < e1000_82576)) { - /* adjust PBA for jumbo frames */ - wr32(E1000_PBA, pba); - - /* To maintain wire speed transmits, the Tx FIFO should be - * large enough to accommodate two full transmit packets, - * rounded up to the next 1KB and expressed in KB. Likewise, - * the Rx FIFO should be large enough to accommodate at least - * one full receive packet and is similarly rounded up and - * expressed in KB. */ - pba = rd32(E1000_PBA); - /* upper 16 bits has Tx packet buffer allocation size in KB */ - tx_space = pba >> 16; - /* lower 16 bits has Rx packet buffer allocation size in KB */ - pba &= 0xffff; - /* the tx fifo also stores 16 bytes of information about the tx - * but don't include ethernet FCS because hardware appends it */ - min_tx_space = (adapter->max_frame_size + - sizeof(union e1000_adv_tx_desc) - - ETH_FCS_LEN) * 2; - min_tx_space = ALIGN(min_tx_space, 1024); - min_tx_space >>= 10; - /* software strips receive CRC, so leave room for it */ - min_rx_space = adapter->max_frame_size; - min_rx_space = ALIGN(min_rx_space, 1024); - min_rx_space >>= 10; - - /* If current Tx allocation is less than the min Tx FIFO size, - * and the min Tx FIFO size is less than the current Rx FIFO - * allocation, take space away from current Rx allocation */ - if (tx_space < min_tx_space && - ((min_tx_space - tx_space) < pba)) { - pba = pba - (min_tx_space - tx_space); - - /* if short on rx space, rx wins and must trump tx - * adjustment */ - if (pba < min_rx_space) - pba = min_rx_space; - } - wr32(E1000_PBA, pba); - } - - /* flow control settings */ - /* The high water mark must be low enough to fit one full frame - * (or the size used for early receive) above it in the Rx FIFO. - * Set it to the lower of: - * - 90% of the Rx FIFO size, or - * - the full Rx FIFO size minus one full frame */ - hwm = min(((pba << 10) * 9 / 10), - ((pba << 10) - 2 * adapter->max_frame_size)); - - if (mac->type < e1000_82576) { - fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */ - fc->low_water = fc->high_water - 8; - } else { - fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */ - fc->low_water = fc->high_water - 16; - } - fc->pause_time = 0xFFFF; - fc->send_xon = 1; - fc->type = fc->original_type; - - /* disable receive for all VFs and wait one second */ - if (adapter->vfs_allocated_count) { - int i; - for (i = 0 ; i < adapter->vfs_allocated_count; i++) - adapter->vf_data[i].clear_to_send = false; - - /* ping all the active vfs to let them know we are going down */ - igb_ping_all_vfs(adapter); - - /* disable transmits and receives */ - wr32(E1000_VFRE, 0); - wr32(E1000_VFTE, 0); - } - - /* Allow time for pending master requests to run */ - adapter->hw.mac.ops.reset_hw(&adapter->hw); - wr32(E1000_WUC, 0); - - if (adapter->hw.mac.ops.init_hw(&adapter->hw)) - dev_err(&adapter->pdev->dev, "Hardware Error\n"); - - igb_update_mng_vlan(adapter); - - /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ - wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); - - igb_reset_adaptive(&adapter->hw); - igb_get_phy_info(&adapter->hw); -} - -static const struct net_device_ops igb_netdev_ops = { - .ndo_open = igb_open, - .ndo_stop = igb_close, - .ndo_start_xmit = igb_xmit_frame_adv, - .ndo_get_stats = igb_get_stats, - .ndo_set_multicast_list = igb_set_multi, - .ndo_set_mac_address = igb_set_mac, - .ndo_change_mtu = igb_change_mtu, - .ndo_do_ioctl = igb_ioctl, - .ndo_tx_timeout = igb_tx_timeout, - .ndo_validate_addr = eth_validate_addr, - .ndo_vlan_rx_register = igb_vlan_rx_register, - .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, - .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = igb_netpoll, -#endif -}; - -/** - * igb_probe - Device Initialization Routine - * @pdev: PCI device information struct - * @ent: entry in igb_pci_tbl - * - * Returns 0 on success, negative on failure - * - * igb_probe initializes an adapter identified by a pci_dev structure. - * The OS initialization, configuring of the adapter private structure, - * and a hardware reset occur. - **/ -static int __devinit igb_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct net_device *netdev; - struct igb_adapter *adapter; - struct e1000_hw *hw; - const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; - unsigned long mmio_start, mmio_len; - int err, pci_using_dac; - u16 eeprom_data = 0; - u16 eeprom_apme_mask = IGB_EEPROM_APME; - u32 part_num; - - err = pci_enable_device_mem(pdev); - if (err) - return err; - - pci_using_dac = 0; - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); - if (!err) { - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); - if (!err) - pci_using_dac = 1; - } else { - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (err) { - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, "No usable DMA " - "configuration, aborting\n"); - goto err_dma; - } - } - } - - err = pci_request_selected_regions(pdev, pci_select_bars(pdev, - IORESOURCE_MEM), - igb_driver_name); - if (err) - goto err_pci_reg; - - err = pci_enable_pcie_error_reporting(pdev); - if (err) { - dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed " - "0x%x\n", err); - /* non-fatal, continue */ - } - - pci_set_master(pdev); - pci_save_state(pdev); - - err = -ENOMEM; - netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), - IGB_ABS_MAX_TX_QUEUES); - if (!netdev) - goto err_alloc_etherdev; - - SET_NETDEV_DEV(netdev, &pdev->dev); - - pci_set_drvdata(pdev, netdev); - adapter = netdev_priv(netdev); - adapter->netdev = netdev; - adapter->pdev = pdev; - hw = &adapter->hw; - hw->back = adapter; - adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE; - - mmio_start = pci_resource_start(pdev, 0); - mmio_len = pci_resource_len(pdev, 0); - - err = -EIO; - hw->hw_addr = ioremap(mmio_start, mmio_len); - if (!hw->hw_addr) - goto err_ioremap; - - netdev->netdev_ops = &igb_netdev_ops; - igb_set_ethtool_ops(netdev); - netdev->watchdog_timeo = 5 * HZ; - - strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); - - netdev->mem_start = mmio_start; - netdev->mem_end = mmio_start + mmio_len; - - /* PCI config space info */ - hw->vendor_id = pdev->vendor; - hw->device_id = pdev->device; - hw->revision_id = pdev->revision; - hw->subsystem_vendor_id = pdev->subsystem_vendor; - hw->subsystem_device_id = pdev->subsystem_device; - - /* setup the private structure */ - hw->back = adapter; - /* Copy the default MAC, PHY and NVM function pointers */ - memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); - memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); - memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); - /* Initialize skew-specific constants */ - err = ei->get_invariants(hw); - if (err) - goto err_sw_init; - -#ifdef CONFIG_PCI_IOV - /* since iov functionality isn't critical to base device function we - * can accept failure. If it fails we don't allow iov to be enabled */ - if (hw->mac.type == e1000_82576) { - /* 82576 supports a maximum of 7 VFs in addition to the PF */ - unsigned int num_vfs = (max_vfs > 7) ? 7 : max_vfs; - int i; - unsigned char mac_addr[ETH_ALEN]; - - if (num_vfs) { - adapter->vf_data = kcalloc(num_vfs, - sizeof(struct vf_data_storage), - GFP_KERNEL); - if (!adapter->vf_data) { - dev_err(&pdev->dev, - "Could not allocate VF private data - " - "IOV enable failed\n"); - } else { - err = pci_enable_sriov(pdev, num_vfs); - if (!err) { - adapter->vfs_allocated_count = num_vfs; - dev_info(&pdev->dev, - "%d vfs allocated\n", - num_vfs); - for (i = 0; - i < adapter->vfs_allocated_count; - i++) { - random_ether_addr(mac_addr); - igb_set_vf_mac(adapter, i, - mac_addr); - } - } else { - kfree(adapter->vf_data); - adapter->vf_data = NULL; - } - } - } - } - -#endif - /* setup the private structure */ - err = igb_sw_init(adapter); - if (err) - goto err_sw_init; - - igb_get_bus_info_pcie(hw); - - /* set flags */ - switch (hw->mac.type) { - case e1000_82575: - adapter->flags |= IGB_FLAG_NEED_CTX_IDX; - break; - case e1000_82576: - default: - break; - } - - hw->phy.autoneg_wait_to_complete = false; - hw->mac.adaptive_ifs = true; - - /* Copper options */ - if (hw->phy.media_type == e1000_media_type_copper) { - hw->phy.mdix = AUTO_ALL_MODES; - hw->phy.disable_polarity_correction = false; - hw->phy.ms_type = e1000_ms_hw_default; - } - - if (igb_check_reset_block(hw)) - dev_info(&pdev->dev, - "PHY reset is blocked due to SOL/IDER session.\n"); - - netdev->features = NETIF_F_SG | - NETIF_F_IP_CSUM | - NETIF_F_HW_VLAN_TX | - NETIF_F_HW_VLAN_RX | - NETIF_F_HW_VLAN_FILTER; - - netdev->features |= NETIF_F_IPV6_CSUM; - netdev->features |= NETIF_F_TSO; - netdev->features |= NETIF_F_TSO6; - - netdev->features |= NETIF_F_GRO; - - netdev->vlan_features |= NETIF_F_TSO; - netdev->vlan_features |= NETIF_F_TSO6; - netdev->vlan_features |= NETIF_F_IP_CSUM; - netdev->vlan_features |= NETIF_F_SG; - - if (pci_using_dac) - netdev->features |= NETIF_F_HIGHDMA; - - if (adapter->hw.mac.type == e1000_82576) - netdev->features |= NETIF_F_SCTP_CSUM; - - adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw); - - /* before reading the NVM, reset the controller to put the device in a - * known good starting state */ - hw->mac.ops.reset_hw(hw); - - /* make sure the NVM is good */ - if (igb_validate_nvm_checksum(hw) < 0) { - dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); - err = -EIO; - goto err_eeprom; - } - - /* copy the MAC address out of the NVM */ - if (hw->mac.ops.read_mac_addr(hw)) - dev_err(&pdev->dev, "NVM Read Error\n"); - - memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); - memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len); - - if (!is_valid_ether_addr(netdev->perm_addr)) { - dev_err(&pdev->dev, "Invalid MAC Address\n"); - err = -EIO; - goto err_eeprom; - } - - setup_timer(&adapter->watchdog_timer, &igb_watchdog, - (unsigned long) adapter); - setup_timer(&adapter->phy_info_timer, &igb_update_phy_info, - (unsigned long) adapter); - - INIT_WORK(&adapter->reset_task, igb_reset_task); - INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); - - /* Initialize link properties that are user-changeable */ - adapter->fc_autoneg = true; - hw->mac.autoneg = true; - hw->phy.autoneg_advertised = 0x2f; - - hw->fc.original_type = e1000_fc_default; - hw->fc.type = e1000_fc_default; - - adapter->itr_setting = IGB_DEFAULT_ITR; - adapter->itr = IGB_START_ITR; - - igb_validate_mdi_setting(hw); - - /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM, - * enable the ACPI Magic Packet filter - */ - - if (hw->bus.func == 0) - hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); - else if (hw->bus.func == 1) - hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); - - if (eeprom_data & eeprom_apme_mask) - adapter->eeprom_wol |= E1000_WUFC_MAG; - - /* now that we have the eeprom settings, apply the special cases where - * the eeprom may be wrong or the board simply won't support wake on - * lan on a particular port */ - switch (pdev->device) { - case E1000_DEV_ID_82575GB_QUAD_COPPER: - adapter->eeprom_wol = 0; - break; - case E1000_DEV_ID_82575EB_FIBER_SERDES: - case E1000_DEV_ID_82576_FIBER: - case E1000_DEV_ID_82576_SERDES: - /* Wake events only supported on port A for dual fiber - * regardless of eeprom setting */ - if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) - adapter->eeprom_wol = 0; - break; - case E1000_DEV_ID_82576_QUAD_COPPER: - /* if quad port adapter, disable WoL on all but port A */ - if (global_quad_port_a != 0) - adapter->eeprom_wol = 0; - else - adapter->flags |= IGB_FLAG_QUAD_PORT_A; - /* Reset for multiple quad port adapters */ - if (++global_quad_port_a == 4) - global_quad_port_a = 0; - break; - } - - /* initialize the wol settings based on the eeprom settings */ - adapter->wol = adapter->eeprom_wol; - device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); - - /* reset the hardware with the new settings */ - igb_reset(adapter); - - /* let the f/w know that the h/w is now under the control of the - * driver. */ - igb_get_hw_control(adapter); - - strcpy(netdev->name, "eth%d"); - err = register_netdev(netdev); - if (err) - goto err_register; - - /* carrier off reporting is important to ethtool even BEFORE open */ - netif_carrier_off(netdev); - -#ifdef CONFIG_IGB_DCA - if (dca_add_requester(&pdev->dev) == 0) { - adapter->flags |= IGB_FLAG_DCA_ENABLED; - dev_info(&pdev->dev, "DCA enabled\n"); - igb_setup_dca(adapter); - } -#endif - - /* - * Initialize hardware timer: we keep it running just in case - * that some program needs it later on. - */ - memset(&adapter->cycles, 0, sizeof(adapter->cycles)); - adapter->cycles.read = igb_read_clock; - adapter->cycles.mask = CLOCKSOURCE_MASK(64); - adapter->cycles.mult = 1; - adapter->cycles.shift = IGB_TSYNC_SHIFT; - wr32(E1000_TIMINCA, - (1<<24) | - IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS * IGB_TSYNC_SCALE); -#if 0 - /* - * Avoid rollover while we initialize by resetting the time counter. - */ - wr32(E1000_SYSTIML, 0x00000000); - wr32(E1000_SYSTIMH, 0x00000000); -#else - /* - * Set registers so that rollover occurs soon to test this. - */ - wr32(E1000_SYSTIML, 0x00000000); - wr32(E1000_SYSTIMH, 0xFF800000); -#endif - wrfl(); - timecounter_init(&adapter->clock, - &adapter->cycles, - ktime_to_ns(ktime_get_real())); - - /* - * Synchronize our NIC clock against system wall clock. NIC - * time stamp reading requires ~3us per sample, each sample - * was pretty stable even under load => only require 10 - * samples for each offset comparison. - */ - memset(&adapter->compare, 0, sizeof(adapter->compare)); - adapter->compare.source = &adapter->clock; - adapter->compare.target = ktime_get_real; - adapter->compare.num_samples = 10; - timecompare_update(&adapter->compare, 0); - -#ifdef DEBUG - { - char buffer[160]; - printk(KERN_DEBUG - "igb: %s: hw %p initialized timer\n", - igb_get_time_str(adapter, buffer), - &adapter->hw); - } -#endif - - dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); - /* print bus type/speed/width info */ - dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", - netdev->name, - ((hw->bus.speed == e1000_bus_speed_2500) - ? "2.5Gb/s" : "unknown"), - ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : - (hw->bus.width == e1000_bus_width_pcie_x2) ? "Width x2" : - (hw->bus.width == e1000_bus_width_pcie_x1) ? "Width x1" : - "unknown"), - netdev->dev_addr); - - igb_read_part_num(hw, &part_num); - dev_info(&pdev->dev, "%s: PBA No: %06x-%03x\n", netdev->name, - (part_num >> 8), (part_num & 0xff)); - - dev_info(&pdev->dev, - "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", - adapter->msix_entries ? "MSI-X" : - (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", - adapter->num_rx_queues, adapter->num_tx_queues); - - return 0; - -err_register: - igb_release_hw_control(adapter); -err_eeprom: - if (!igb_check_reset_block(hw)) - igb_reset_phy(hw); - - if (hw->flash_address) - iounmap(hw->flash_address); - - igb_free_queues(adapter); -err_sw_init: - iounmap(hw->hw_addr); -err_ioremap: - free_netdev(netdev); -err_alloc_etherdev: - pci_release_selected_regions(pdev, pci_select_bars(pdev, - IORESOURCE_MEM)); -err_pci_reg: -err_dma: - pci_disable_device(pdev); - return err; -} - -/** - * igb_remove - Device Removal Routine - * @pdev: PCI device information struct - * - * igb_remove is called by the PCI subsystem to alert the driver - * that it should release a PCI device. The could be caused by a - * Hot-Plug event, or because the driver is going to be removed from - * memory. - **/ -static void __devexit igb_remove(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - int err; - - /* flush_scheduled work may reschedule our watchdog task, so - * explicitly disable watchdog tasks from being rescheduled */ - set_bit(__IGB_DOWN, &adapter->state); - del_timer_sync(&adapter->watchdog_timer); - del_timer_sync(&adapter->phy_info_timer); - - flush_scheduled_work(); - -#ifdef CONFIG_IGB_DCA - if (adapter->flags & IGB_FLAG_DCA_ENABLED) { - dev_info(&pdev->dev, "DCA disabled\n"); - dca_remove_requester(&pdev->dev); - adapter->flags &= ~IGB_FLAG_DCA_ENABLED; - wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); - } -#endif - - /* Release control of h/w to f/w. If f/w is AMT enabled, this - * would have already happened in close and is redundant. */ - igb_release_hw_control(adapter); - - unregister_netdev(netdev); - - if (!igb_check_reset_block(&adapter->hw)) - igb_reset_phy(&adapter->hw); - - igb_reset_interrupt_capability(adapter); - - igb_free_queues(adapter); - -#ifdef CONFIG_PCI_IOV - /* reclaim resources allocated to VFs */ - if (adapter->vf_data) { - /* disable iov and allow time for transactions to clear */ - pci_disable_sriov(pdev); - msleep(500); - - kfree(adapter->vf_data); - adapter->vf_data = NULL; - wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); - msleep(100); - dev_info(&pdev->dev, "IOV Disabled\n"); - } -#endif - iounmap(hw->hw_addr); - if (hw->flash_address) - iounmap(hw->flash_address); - pci_release_selected_regions(pdev, pci_select_bars(pdev, - IORESOURCE_MEM)); - - free_netdev(netdev); - - err = pci_disable_pcie_error_reporting(pdev); - if (err) - dev_err(&pdev->dev, - "pci_disable_pcie_error_reporting failed 0x%x\n", err); - - pci_disable_device(pdev); -} - -/** - * igb_sw_init - Initialize general software structures (struct igb_adapter) - * @adapter: board private structure to initialize - * - * igb_sw_init initializes the Adapter private data structure. - * Fields are initialized based on PCI device information and - * OS network device settings (MTU size). - **/ -static int __devinit igb_sw_init(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - struct net_device *netdev = adapter->netdev; - struct pci_dev *pdev = adapter->pdev; - - pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); - - adapter->tx_ring_count = IGB_DEFAULT_TXD; - adapter->rx_ring_count = IGB_DEFAULT_RXD; - adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; - adapter->rx_ps_hdr_size = 0; /* disable packet split */ - adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; - adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; - - /* This call may decrease the number of queues depending on - * interrupt mode. */ - igb_set_interrupt_capability(adapter); - - if (igb_alloc_queues(adapter)) { - dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); - return -ENOMEM; - } - - /* Explicitly disable IRQ since the NIC can be in any state. */ - igb_irq_disable(adapter); - - set_bit(__IGB_DOWN, &adapter->state); - return 0; -} - -/** - * igb_open - Called when a network interface is made active - * @netdev: network interface device structure - * - * Returns 0 on success, negative value on failure - * - * The open entry point is called when a network interface is made - * active by the system (IFF_UP). At this point all resources needed - * for transmit and receive operations are allocated, the interrupt - * handler is registered with the OS, the watchdog timer is started, - * and the stack is notified that the interface is ready. - **/ -static int igb_open(struct net_device *netdev) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - int err; - int i; - - /* disallow open during test */ - if (test_bit(__IGB_TESTING, &adapter->state)) - return -EBUSY; - - netif_carrier_off(netdev); - - /* allocate transmit descriptors */ - err = igb_setup_all_tx_resources(adapter); - if (err) - goto err_setup_tx; - - /* allocate receive descriptors */ - err = igb_setup_all_rx_resources(adapter); - if (err) - goto err_setup_rx; - - /* e1000_power_up_phy(adapter); */ - - adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; - if ((adapter->hw.mng_cookie.status & - E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) - igb_update_mng_vlan(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. */ - igb_configure(adapter); - - igb_vmm_control(adapter); - igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); - igb_set_vmolr(hw, adapter->vfs_allocated_count); - - err = igb_request_irq(adapter); - if (err) - goto err_req_irq; - - /* From here on the code is the same as igb_up() */ - clear_bit(__IGB_DOWN, &adapter->state); - - for (i = 0; i < adapter->num_rx_queues; i++) - napi_enable(&adapter->rx_ring[i].napi); - - /* Clear any pending interrupts. */ - rd32(E1000_ICR); - - igb_irq_enable(adapter); - - netif_tx_start_all_queues(netdev); - - /* Fire a link status change interrupt to start the watchdog. */ - wr32(E1000_ICS, E1000_ICS_LSC); - - return 0; - -err_req_irq: - igb_release_hw_control(adapter); - /* e1000_power_down_phy(adapter); */ - igb_free_all_rx_resources(adapter); -err_setup_rx: - igb_free_all_tx_resources(adapter); -err_setup_tx: - igb_reset(adapter); - - return err; -} - -/** - * igb_close - Disables a network interface - * @netdev: network interface device structure - * - * Returns 0, this is not allowed to fail - * - * The close entry point is called when an interface is de-activated - * by the OS. The hardware is still under the driver's control, but - * needs to be disabled. A global MAC reset is issued to stop the - * hardware, and all transmit and receive resources are freed. - **/ -static int igb_close(struct net_device *netdev) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - - WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); - igb_down(adapter); - - igb_free_irq(adapter); - - igb_free_all_tx_resources(adapter); - igb_free_all_rx_resources(adapter); - - /* kill manageability vlan ID if supported, but not if a vlan with - * the same ID is registered on the host OS (let 8021q kill it) */ - if ((adapter->hw.mng_cookie.status & - E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && - !(adapter->vlgrp && - vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) - igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); - - return 0; -} - -/** - * igb_setup_tx_resources - allocate Tx resources (Descriptors) - * @adapter: board private structure - * @tx_ring: tx descriptor ring (for a specific queue) to setup - * - * Return 0 on success, negative on failure - **/ -int igb_setup_tx_resources(struct igb_adapter *adapter, - struct igb_ring *tx_ring) -{ - struct pci_dev *pdev = adapter->pdev; - int size; - - size = sizeof(struct igb_buffer) * tx_ring->count; - tx_ring->buffer_info = vmalloc(size); - if (!tx_ring->buffer_info) - goto err; - memset(tx_ring->buffer_info, 0, size); - - /* round up to nearest 4K */ - tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); - tx_ring->size = ALIGN(tx_ring->size, 4096); - - tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, - &tx_ring->dma); - - if (!tx_ring->desc) - goto err; - - tx_ring->adapter = adapter; - tx_ring->next_to_use = 0; - tx_ring->next_to_clean = 0; - return 0; - -err: - vfree(tx_ring->buffer_info); - dev_err(&adapter->pdev->dev, - "Unable to allocate memory for the transmit descriptor ring\n"); - return -ENOMEM; -} - -/** - * igb_setup_all_tx_resources - wrapper to allocate Tx resources - * (Descriptors) for all queues - * @adapter: board private structure - * - * Return 0 on success, negative on failure - **/ -static int igb_setup_all_tx_resources(struct igb_adapter *adapter) -{ - int i, err = 0; - int r_idx; - - for (i = 0; i < adapter->num_tx_queues; i++) { - err = igb_setup_tx_resources(adapter, &adapter->tx_ring[i]); - if (err) { - dev_err(&adapter->pdev->dev, - "Allocation for Tx Queue %u failed\n", i); - for (i--; i >= 0; i--) - igb_free_tx_resources(&adapter->tx_ring[i]); - break; - } - } - - for (i = 0; i < IGB_MAX_TX_QUEUES; i++) { - r_idx = i % adapter->num_tx_queues; - adapter->multi_tx_table[i] = &adapter->tx_ring[r_idx]; - } - return err; -} - -/** - * igb_configure_tx - Configure transmit Unit after Reset - * @adapter: board private structure - * - * Configure the Tx unit of the MAC after a reset. - **/ -static void igb_configure_tx(struct igb_adapter *adapter) -{ - u64 tdba; - struct e1000_hw *hw = &adapter->hw; - u32 tctl; - u32 txdctl, txctrl; - int i, j; - - for (i = 0; i < adapter->num_tx_queues; i++) { - struct igb_ring *ring = &adapter->tx_ring[i]; - j = ring->reg_idx; - wr32(E1000_TDLEN(j), - ring->count * sizeof(union e1000_adv_tx_desc)); - tdba = ring->dma; - wr32(E1000_TDBAL(j), - tdba & 0x00000000ffffffffULL); - wr32(E1000_TDBAH(j), tdba >> 32); - - ring->head = E1000_TDH(j); - ring->tail = E1000_TDT(j); - writel(0, hw->hw_addr + ring->tail); - writel(0, hw->hw_addr + ring->head); - txdctl = rd32(E1000_TXDCTL(j)); - txdctl |= E1000_TXDCTL_QUEUE_ENABLE; - wr32(E1000_TXDCTL(j), txdctl); - - /* Turn off Relaxed Ordering on head write-backs. The - * writebacks MUST be delivered in order or it will - * completely screw up our bookeeping. - */ - txctrl = rd32(E1000_DCA_TXCTRL(j)); - txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; - wr32(E1000_DCA_TXCTRL(j), txctrl); - } - - /* disable queue 0 to prevent tail bump w/o re-configuration */ - if (adapter->vfs_allocated_count) - wr32(E1000_TXDCTL(0), 0); - - /* Program the Transmit Control Register */ - tctl = rd32(E1000_TCTL); - tctl &= ~E1000_TCTL_CT; - tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | - (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); - - igb_config_collision_dist(hw); - - /* Setup Transmit Descriptor Settings for eop descriptor */ - adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS; - - /* Enable transmits */ - tctl |= E1000_TCTL_EN; - - wr32(E1000_TCTL, tctl); -} - -/** - * igb_setup_rx_resources - allocate Rx resources (Descriptors) - * @adapter: board private structure - * @rx_ring: rx descriptor ring (for a specific queue) to setup - * - * Returns 0 on success, negative on failure - **/ -int igb_setup_rx_resources(struct igb_adapter *adapter, - struct igb_ring *rx_ring) -{ - struct pci_dev *pdev = adapter->pdev; - int size, desc_len; - - size = sizeof(struct igb_buffer) * rx_ring->count; - rx_ring->buffer_info = vmalloc(size); - if (!rx_ring->buffer_info) - goto err; - memset(rx_ring->buffer_info, 0, size); - - desc_len = sizeof(union e1000_adv_rx_desc); - - /* Round up to nearest 4K */ - rx_ring->size = rx_ring->count * desc_len; - rx_ring->size = ALIGN(rx_ring->size, 4096); - - rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, - &rx_ring->dma); - - if (!rx_ring->desc) - goto err; - - rx_ring->next_to_clean = 0; - rx_ring->next_to_use = 0; - - rx_ring->adapter = adapter; - - return 0; - -err: - vfree(rx_ring->buffer_info); - dev_err(&adapter->pdev->dev, "Unable to allocate memory for " - "the receive descriptor ring\n"); - return -ENOMEM; -} - -/** - * igb_setup_all_rx_resources - wrapper to allocate Rx resources - * (Descriptors) for all queues - * @adapter: board private structure - * - * Return 0 on success, negative on failure - **/ -static int igb_setup_all_rx_resources(struct igb_adapter *adapter) -{ - int i, err = 0; - - for (i = 0; i < adapter->num_rx_queues; i++) { - err = igb_setup_rx_resources(adapter, &adapter->rx_ring[i]); - if (err) { - dev_err(&adapter->pdev->dev, - "Allocation for Rx Queue %u failed\n", i); - for (i--; i >= 0; i--) - igb_free_rx_resources(&adapter->rx_ring[i]); - break; - } - } - - return err; -} - -/** - * igb_setup_rctl - configure the receive control registers - * @adapter: Board private structure - **/ -static void igb_setup_rctl(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - u32 rctl; - u32 srrctl = 0; - int i; - - rctl = rd32(E1000_RCTL); - - rctl &= ~(3 << E1000_RCTL_MO_SHIFT); - rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); - - rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | - (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); - - /* - * enable stripping of CRC. It's unlikely this will break BMC - * redirection as it did with e1000. Newer features require - * that the HW strips the CRC. - */ - rctl |= E1000_RCTL_SECRC; - - /* - * disable store bad packets and clear size bits. - */ - rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); - - /* enable LPE when to prevent packets larger than max_frame_size */ - rctl |= E1000_RCTL_LPE; - - /* Setup buffer sizes */ - switch (adapter->rx_buffer_len) { - case IGB_RXBUFFER_256: - rctl |= E1000_RCTL_SZ_256; - break; - case IGB_RXBUFFER_512: - rctl |= E1000_RCTL_SZ_512; - break; - default: - srrctl = ALIGN(adapter->rx_buffer_len, 1024) - >> E1000_SRRCTL_BSIZEPKT_SHIFT; - break; - } - - /* 82575 and greater support packet-split where the protocol - * header is placed in skb->data and the packet data is - * placed in pages hanging off of skb_shinfo(skb)->nr_frags. - * In the case of a non-split, skb->data is linearly filled, - * followed by the page buffers. Therefore, skb->data is - * sized to hold the largest protocol header. - */ - /* allocations using alloc_page take too long for regular MTU - * so only enable packet split for jumbo frames */ - if (adapter->netdev->mtu > ETH_DATA_LEN) { - adapter->rx_ps_hdr_size = IGB_RXBUFFER_128; - srrctl |= adapter->rx_ps_hdr_size << - E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; - srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; - } else { - adapter->rx_ps_hdr_size = 0; - srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; - } - - /* Attention!!! For SR-IOV PF driver operations you must enable - * queue drop for all VF and PF queues to prevent head of line blocking - * if an un-trusted VF does not provide descriptors to hardware. - */ - if (adapter->vfs_allocated_count) { - u32 vmolr; - - /* set all queue drop enable bits */ - wr32(E1000_QDE, ALL_QUEUES); - srrctl |= E1000_SRRCTL_DROP_EN; - - /* disable queue 0 to prevent tail write w/o re-config */ - wr32(E1000_RXDCTL(0), 0); - - vmolr = rd32(E1000_VMOLR(adapter->vfs_allocated_count)); - if (rctl & E1000_RCTL_LPE) - vmolr |= E1000_VMOLR_LPE; - if (adapter->num_rx_queues > 1) - vmolr |= E1000_VMOLR_RSSE; - wr32(E1000_VMOLR(adapter->vfs_allocated_count), vmolr); - } - - for (i = 0; i < adapter->num_rx_queues; i++) { - int j = adapter->rx_ring[i].reg_idx; - wr32(E1000_SRRCTL(j), srrctl); - } - - wr32(E1000_RCTL, rctl); -} - -/** - * igb_rlpml_set - set maximum receive packet size - * @adapter: board private structure - * - * Configure maximum receivable packet size. - **/ -static void igb_rlpml_set(struct igb_adapter *adapter) -{ - u32 max_frame_size = adapter->max_frame_size; - struct e1000_hw *hw = &adapter->hw; - u16 pf_id = adapter->vfs_allocated_count; - - if (adapter->vlgrp) - max_frame_size += VLAN_TAG_SIZE; - - /* if vfs are enabled we set RLPML to the largest possible request - * size and set the VMOLR RLPML to the size we need */ - if (pf_id) { - igb_set_vf_rlpml(adapter, max_frame_size, pf_id); - max_frame_size = MAX_STD_JUMBO_FRAME_SIZE + VLAN_TAG_SIZE; - } - - wr32(E1000_RLPML, max_frame_size); -} - -/** - * igb_configure_vt_default_pool - Configure VT default pool - * @adapter: board private structure - * - * Configure the default pool - **/ -static void igb_configure_vt_default_pool(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - u16 pf_id = adapter->vfs_allocated_count; - u32 vtctl; - - /* not in sr-iov mode - do nothing */ - if (!pf_id) - return; - - vtctl = rd32(E1000_VT_CTL); - vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK | - E1000_VT_CTL_DISABLE_DEF_POOL); - vtctl |= pf_id << E1000_VT_CTL_DEFAULT_POOL_SHIFT; - wr32(E1000_VT_CTL, vtctl); -} - -/** - * igb_configure_rx - Configure receive Unit after Reset - * @adapter: board private structure - * - * Configure the Rx unit of the MAC after a reset. - **/ -static void igb_configure_rx(struct igb_adapter *adapter) -{ - u64 rdba; - struct e1000_hw *hw = &adapter->hw; - u32 rctl, rxcsum; - u32 rxdctl; - int i; - - /* disable receives while setting up the descriptors */ - rctl = rd32(E1000_RCTL); - wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); - wrfl(); - mdelay(10); - - if (adapter->itr_setting > 3) - wr32(E1000_ITR, adapter->itr); - - /* Setup the HW Rx Head and Tail Descriptor Pointers and - * the Base and Length of the Rx Descriptor Ring */ - for (i = 0; i < adapter->num_rx_queues; i++) { - struct igb_ring *ring = &adapter->rx_ring[i]; - int j = ring->reg_idx; - rdba = ring->dma; - wr32(E1000_RDBAL(j), - rdba & 0x00000000ffffffffULL); - wr32(E1000_RDBAH(j), rdba >> 32); - wr32(E1000_RDLEN(j), - ring->count * sizeof(union e1000_adv_rx_desc)); - - ring->head = E1000_RDH(j); - ring->tail = E1000_RDT(j); - writel(0, hw->hw_addr + ring->tail); - writel(0, hw->hw_addr + ring->head); - - rxdctl = rd32(E1000_RXDCTL(j)); - rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; - rxdctl &= 0xFFF00000; - rxdctl |= IGB_RX_PTHRESH; - rxdctl |= IGB_RX_HTHRESH << 8; - rxdctl |= IGB_RX_WTHRESH << 16; - wr32(E1000_RXDCTL(j), rxdctl); - } - - if (adapter->num_rx_queues > 1) { - u32 random[10]; - u32 mrqc; - u32 j, shift; - union e1000_reta { - u32 dword; - u8 bytes[4]; - } reta; - - get_random_bytes(&random[0], 40); - - if (hw->mac.type >= e1000_82576) - shift = 0; - else - shift = 6; - for (j = 0; j < (32 * 4); j++) { - reta.bytes[j & 3] = - adapter->rx_ring[(j % adapter->num_rx_queues)].reg_idx << shift; - if ((j & 3) == 3) - writel(reta.dword, - hw->hw_addr + E1000_RETA(0) + (j & ~3)); - } - if (adapter->vfs_allocated_count) - mrqc = E1000_MRQC_ENABLE_VMDQ_RSS_2Q; - else - mrqc = E1000_MRQC_ENABLE_RSS_4Q; - - /* Fill out hash function seeds */ - for (j = 0; j < 10; j++) - array_wr32(E1000_RSSRK(0), j, random[j]); - - mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 | - E1000_MRQC_RSS_FIELD_IPV4_TCP); - mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 | - E1000_MRQC_RSS_FIELD_IPV6_TCP); - mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP | - E1000_MRQC_RSS_FIELD_IPV6_UDP); - mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX | - E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); - - wr32(E1000_MRQC, mrqc); - } else if (adapter->vfs_allocated_count) { - /* Enable multi-queue for sr-iov */ - wr32(E1000_MRQC, E1000_MRQC_ENABLE_VMDQ); - } - - /* Enable Receive Checksum Offload for TCP and UDP */ - rxcsum = rd32(E1000_RXCSUM); - /* Disable raw packet checksumming */ - rxcsum |= E1000_RXCSUM_PCSD; - - if (adapter->hw.mac.type == e1000_82576) - /* Enable Receive Checksum Offload for SCTP */ - rxcsum |= E1000_RXCSUM_CRCOFL; - - /* Don't need to set TUOFL or IPOFL, they default to 1 */ - wr32(E1000_RXCSUM, rxcsum); - - /* Set the default pool for the PF's first queue */ - igb_configure_vt_default_pool(adapter); - - igb_rlpml_set(adapter); - - /* Enable Receives */ - wr32(E1000_RCTL, rctl); -} - -/** - * igb_free_tx_resources - Free Tx Resources per Queue - * @tx_ring: Tx descriptor ring for a specific queue - * - * Free all transmit software resources - **/ -void igb_free_tx_resources(struct igb_ring *tx_ring) -{ - struct pci_dev *pdev = tx_ring->adapter->pdev; - - igb_clean_tx_ring(tx_ring); - - vfree(tx_ring->buffer_info); - tx_ring->buffer_info = NULL; - - pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); - - tx_ring->desc = NULL; -} - -/** - * igb_free_all_tx_resources - Free Tx Resources for All Queues - * @adapter: board private structure - * - * Free all transmit software resources - **/ -static void igb_free_all_tx_resources(struct igb_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_tx_queues; i++) - igb_free_tx_resources(&adapter->tx_ring[i]); -} - -static void igb_unmap_and_free_tx_resource(struct igb_adapter *adapter, - struct igb_buffer *buffer_info) -{ - buffer_info->dma = 0; - if (buffer_info->skb) { - skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb, - DMA_TO_DEVICE); - dev_kfree_skb_any(buffer_info->skb); - buffer_info->skb = NULL; - } - buffer_info->time_stamp = 0; - /* buffer_info must be completely set up in the transmit path */ -} - -/** - * igb_clean_tx_ring - Free Tx Buffers - * @tx_ring: ring to be cleaned - **/ -static void igb_clean_tx_ring(struct igb_ring *tx_ring) -{ - struct igb_adapter *adapter = tx_ring->adapter; - struct igb_buffer *buffer_info; - unsigned long size; - unsigned int i; - - if (!tx_ring->buffer_info) - return; - /* Free all the Tx ring sk_buffs */ - - for (i = 0; i < tx_ring->count; i++) { - buffer_info = &tx_ring->buffer_info[i]; - igb_unmap_and_free_tx_resource(adapter, buffer_info); - } - - size = sizeof(struct igb_buffer) * tx_ring->count; - memset(tx_ring->buffer_info, 0, size); - - /* Zero out the descriptor ring */ - - memset(tx_ring->desc, 0, tx_ring->size); - - tx_ring->next_to_use = 0; - tx_ring->next_to_clean = 0; - - writel(0, adapter->hw.hw_addr + tx_ring->head); - writel(0, adapter->hw.hw_addr + tx_ring->tail); -} - -/** - * igb_clean_all_tx_rings - Free Tx Buffers for all queues - * @adapter: board private structure - **/ -static void igb_clean_all_tx_rings(struct igb_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_tx_queues; i++) - igb_clean_tx_ring(&adapter->tx_ring[i]); -} - -/** - * igb_free_rx_resources - Free Rx Resources - * @rx_ring: ring to clean the resources from - * - * Free all receive software resources - **/ -void igb_free_rx_resources(struct igb_ring *rx_ring) -{ - struct pci_dev *pdev = rx_ring->adapter->pdev; - - igb_clean_rx_ring(rx_ring); - - vfree(rx_ring->buffer_info); - rx_ring->buffer_info = NULL; - - pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); - - rx_ring->desc = NULL; -} - -/** - * igb_free_all_rx_resources - Free Rx Resources for All Queues - * @adapter: board private structure - * - * Free all receive software resources - **/ -static void igb_free_all_rx_resources(struct igb_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_rx_queues; i++) - igb_free_rx_resources(&adapter->rx_ring[i]); -} - -/** - * igb_clean_rx_ring - Free Rx Buffers per Queue - * @rx_ring: ring to free buffers from - **/ -static void igb_clean_rx_ring(struct igb_ring *rx_ring) -{ - struct igb_adapter *adapter = rx_ring->adapter; - struct igb_buffer *buffer_info; - struct pci_dev *pdev = adapter->pdev; - unsigned long size; - unsigned int i; - - if (!rx_ring->buffer_info) - return; - /* Free all the Rx ring sk_buffs */ - for (i = 0; i < rx_ring->count; i++) { - buffer_info = &rx_ring->buffer_info[i]; - if (buffer_info->dma) { - if (adapter->rx_ps_hdr_size) - pci_unmap_single(pdev, buffer_info->dma, - adapter->rx_ps_hdr_size, - PCI_DMA_FROMDEVICE); - else - pci_unmap_single(pdev, buffer_info->dma, - adapter->rx_buffer_len, - PCI_DMA_FROMDEVICE); - buffer_info->dma = 0; - } - - if (buffer_info->skb) { - dev_kfree_skb(buffer_info->skb); - buffer_info->skb = NULL; - } - if (buffer_info->page) { - if (buffer_info->page_dma) - pci_unmap_page(pdev, buffer_info->page_dma, - PAGE_SIZE / 2, - PCI_DMA_FROMDEVICE); - put_page(buffer_info->page); - buffer_info->page = NULL; - buffer_info->page_dma = 0; - buffer_info->page_offset = 0; - } - } - - size = sizeof(struct igb_buffer) * rx_ring->count; - memset(rx_ring->buffer_info, 0, size); - - /* Zero out the descriptor ring */ - memset(rx_ring->desc, 0, rx_ring->size); - - rx_ring->next_to_clean = 0; - rx_ring->next_to_use = 0; - - writel(0, adapter->hw.hw_addr + rx_ring->head); - writel(0, adapter->hw.hw_addr + rx_ring->tail); -} - -/** - * igb_clean_all_rx_rings - Free Rx Buffers for all queues - * @adapter: board private structure - **/ -static void igb_clean_all_rx_rings(struct igb_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_rx_queues; i++) - igb_clean_rx_ring(&adapter->rx_ring[i]); -} - -/** - * igb_set_mac - Change the Ethernet Address of the NIC - * @netdev: network interface device structure - * @p: pointer to an address structure - * - * Returns 0 on success, negative on failure - **/ -static int igb_set_mac(struct net_device *netdev, void *p) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - struct sockaddr *addr = p; - - if (!is_valid_ether_addr(addr->sa_data)) - return -EADDRNOTAVAIL; - - memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); - memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); - - hw->mac.ops.rar_set(hw, hw->mac.addr, 0); - - igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); - - return 0; -} - -/** - * igb_set_multi - Multicast and Promiscuous mode set - * @netdev: network interface device structure - * - * The set_multi entry point is called whenever the multicast address - * list or the network interface flags are updated. This routine is - * responsible for configuring the hardware for proper multicast, - * promiscuous mode, and all-multi behavior. - **/ -static void igb_set_multi(struct net_device *netdev) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - struct e1000_mac_info *mac = &hw->mac; - struct dev_mc_list *mc_ptr; - u8 *mta_list = NULL; - u32 rctl; - int i; - - /* Check for Promiscuous and All Multicast modes */ - - rctl = rd32(E1000_RCTL); - - if (netdev->flags & IFF_PROMISC) { - rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); - rctl &= ~E1000_RCTL_VFE; - } else { - if (netdev->flags & IFF_ALLMULTI) { - rctl |= E1000_RCTL_MPE; - rctl &= ~E1000_RCTL_UPE; - } else - rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); - rctl |= E1000_RCTL_VFE; - } - wr32(E1000_RCTL, rctl); - - if (netdev->mc_count) { - mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC); - if (!mta_list) { - dev_err(&adapter->pdev->dev, - "failed to allocate multicast filter list\n"); - return; - } - } - - /* The shared function expects a packed array of only addresses. */ - mc_ptr = netdev->mc_list; - - for (i = 0; i < netdev->mc_count; i++) { - if (!mc_ptr) - break; - memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN); - mc_ptr = mc_ptr->next; - } - igb_update_mc_addr_list(hw, mta_list, i, - adapter->vfs_allocated_count + 1, - mac->rar_entry_count); - - igb_set_mc_list_pools(adapter, i, mac->rar_entry_count); - igb_restore_vf_multicasts(adapter); - - kfree(mta_list); -} - -/* Need to wait a few seconds after link up to get diagnostic information from - * the phy */ -static void igb_update_phy_info(unsigned long data) -{ - struct igb_adapter *adapter = (struct igb_adapter *) data; - igb_get_phy_info(&adapter->hw); -} - -/** - * igb_has_link - check shared code for link and determine up/down - * @adapter: pointer to driver private info - **/ -static bool igb_has_link(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - bool link_active = false; - s32 ret_val = 0; - - /* get_link_status is set on LSC (link status) interrupt or - * rx sequence error interrupt. get_link_status will stay - * false until the e1000_check_for_link establishes link - * for copper adapters ONLY - */ - switch (hw->phy.media_type) { - case e1000_media_type_copper: - if (hw->mac.get_link_status) { - ret_val = hw->mac.ops.check_for_link(hw); - link_active = !hw->mac.get_link_status; - } else { - link_active = true; - } - break; - case e1000_media_type_fiber: - ret_val = hw->mac.ops.check_for_link(hw); - link_active = !!(rd32(E1000_STATUS) & E1000_STATUS_LU); - break; - case e1000_media_type_internal_serdes: - ret_val = hw->mac.ops.check_for_link(hw); - link_active = hw->mac.serdes_has_link; - break; - default: - case e1000_media_type_unknown: - break; - } - - return link_active; -} - -/** - * igb_watchdog - Timer Call-back - * @data: pointer to adapter cast into an unsigned long - **/ -static void igb_watchdog(unsigned long data) -{ - struct igb_adapter *adapter = (struct igb_adapter *)data; - /* Do the rest outside of interrupt context */ - schedule_work(&adapter->watchdog_task); -} - -static void igb_watchdog_task(struct work_struct *work) -{ - struct igb_adapter *adapter = container_of(work, - struct igb_adapter, watchdog_task); - struct e1000_hw *hw = &adapter->hw; - struct net_device *netdev = adapter->netdev; - struct igb_ring *tx_ring = adapter->tx_ring; - u32 link; - u32 eics = 0; - int i; - - link = igb_has_link(adapter); - if ((netif_carrier_ok(netdev)) && link) - goto link_up; - - if (link) { - if (!netif_carrier_ok(netdev)) { - u32 ctrl; - hw->mac.ops.get_speed_and_duplex(&adapter->hw, - &adapter->link_speed, - &adapter->link_duplex); - - ctrl = rd32(E1000_CTRL); - /* Links status message must follow this format */ - printk(KERN_INFO "igb: %s NIC Link is Up %d Mbps %s, " - "Flow Control: %s\n", - netdev->name, - adapter->link_speed, - adapter->link_duplex == FULL_DUPLEX ? - "Full Duplex" : "Half Duplex", - ((ctrl & E1000_CTRL_TFCE) && (ctrl & - E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & - E1000_CTRL_RFCE) ? "RX" : ((ctrl & - E1000_CTRL_TFCE) ? "TX" : "None"))); - - /* tweak tx_queue_len according to speed/duplex and - * adjust the timeout factor */ - netdev->tx_queue_len = adapter->tx_queue_len; - adapter->tx_timeout_factor = 1; - switch (adapter->link_speed) { - case SPEED_10: - netdev->tx_queue_len = 10; - adapter->tx_timeout_factor = 14; - break; - case SPEED_100: - netdev->tx_queue_len = 100; - /* maybe add some timeout factor ? */ - break; - } - - netif_carrier_on(netdev); - - igb_ping_all_vfs(adapter); - - /* link state has changed, schedule phy info update */ - if (!test_bit(__IGB_DOWN, &adapter->state)) - mod_timer(&adapter->phy_info_timer, - round_jiffies(jiffies + 2 * HZ)); - } - } else { - if (netif_carrier_ok(netdev)) { - adapter->link_speed = 0; - adapter->link_duplex = 0; - /* Links status message must follow this format */ - printk(KERN_INFO "igb: %s NIC Link is Down\n", - netdev->name); - netif_carrier_off(netdev); - - igb_ping_all_vfs(adapter); - - /* link state has changed, schedule phy info update */ - if (!test_bit(__IGB_DOWN, &adapter->state)) - mod_timer(&adapter->phy_info_timer, - round_jiffies(jiffies + 2 * HZ)); - } - } - -link_up: - igb_update_stats(adapter); - - hw->mac.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; - adapter->tpt_old = adapter->stats.tpt; - hw->mac.collision_delta = adapter->stats.colc - adapter->colc_old; - adapter->colc_old = adapter->stats.colc; - - adapter->gorc = adapter->stats.gorc - adapter->gorc_old; - adapter->gorc_old = adapter->stats.gorc; - adapter->gotc = adapter->stats.gotc - adapter->gotc_old; - adapter->gotc_old = adapter->stats.gotc; - - igb_update_adaptive(&adapter->hw); - - if (!netif_carrier_ok(netdev)) { - if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) { - /* We've lost link, so the controller stops DMA, - * but we've got queued Tx work that's never going - * to get done, so reset controller to flush Tx. - * (Do the reset outside of interrupt context). */ - adapter->tx_timeout_count++; - schedule_work(&adapter->reset_task); - /* return immediately since reset is imminent */ - return; - } - } - - /* Cause software interrupt to ensure rx ring is cleaned */ - if (adapter->msix_entries) { - for (i = 0; i < adapter->num_rx_queues; i++) - eics |= adapter->rx_ring[i].eims_value; - wr32(E1000_EICS, eics); - } else { - wr32(E1000_ICS, E1000_ICS_RXDMT0); - } - - /* Force detection of hung controller every watchdog period */ - tx_ring->detect_tx_hung = true; - - /* Reset the timer */ - if (!test_bit(__IGB_DOWN, &adapter->state)) - mod_timer(&adapter->watchdog_timer, - round_jiffies(jiffies + 2 * HZ)); -} - -enum latency_range { - lowest_latency = 0, - low_latency = 1, - bulk_latency = 2, - latency_invalid = 255 -}; - - -/** - * igb_update_ring_itr - update the dynamic ITR value based on packet size - * - * Stores a new ITR value based on strictly on packet size. This - * algorithm is less sophisticated than that used in igb_update_itr, - * due to the difficulty of synchronizing statistics across multiple - * receive rings. The divisors and thresholds used by this fuction - * were determined based on theoretical maximum wire speed and testing - * data, in order to minimize response time while increasing bulk - * throughput. - * This functionality is controlled by the InterruptThrottleRate module - * parameter (see igb_param.c) - * NOTE: This function is called only when operating in a multiqueue - * receive environment. - * @rx_ring: pointer to ring - **/ -static void igb_update_ring_itr(struct igb_ring *rx_ring) -{ - int new_val = rx_ring->itr_val; - int avg_wire_size = 0; - struct igb_adapter *adapter = rx_ring->adapter; - - if (!rx_ring->total_packets) - goto clear_counts; /* no packets, so don't do anything */ - - /* For non-gigabit speeds, just fix the interrupt rate at 4000 - * ints/sec - ITR timer value of 120 ticks. - */ - if (adapter->link_speed != SPEED_1000) { - new_val = 120; - goto set_itr_val; - } - avg_wire_size = rx_ring->total_bytes / rx_ring->total_packets; - - /* Add 24 bytes to size to account for CRC, preamble, and gap */ - avg_wire_size += 24; - - /* Don't starve jumbo frames */ - avg_wire_size = min(avg_wire_size, 3000); - - /* Give a little boost to mid-size frames */ - if ((avg_wire_size > 300) && (avg_wire_size < 1200)) - new_val = avg_wire_size / 3; - else - new_val = avg_wire_size / 2; - -set_itr_val: - if (new_val != rx_ring->itr_val) { - rx_ring->itr_val = new_val; - rx_ring->set_itr = 1; - } -clear_counts: - rx_ring->total_bytes = 0; - rx_ring->total_packets = 0; -} - -/** - * igb_update_itr - update the dynamic ITR value based on statistics - * Stores a new ITR value based on packets and byte - * counts during the last interrupt. The advantage of per interrupt - * computation is faster updates and more accurate ITR for the current - * traffic pattern. Constants in this function were computed - * based on theoretical maximum wire speed and thresholds were set based - * on testing data as well as attempting to minimize response time - * while increasing bulk throughput. - * this functionality is controlled by the InterruptThrottleRate module - * parameter (see igb_param.c) - * NOTE: These calculations are only valid when operating in a single- - * queue environment. - * @adapter: pointer to adapter - * @itr_setting: current adapter->itr - * @packets: the number of packets during this measurement interval - * @bytes: the number of bytes during this measurement interval - **/ -static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting, - int packets, int bytes) -{ - unsigned int retval = itr_setting; - - if (packets == 0) - goto update_itr_done; - - switch (itr_setting) { - case lowest_latency: - /* handle TSO and jumbo frames */ - if (bytes/packets > 8000) - retval = bulk_latency; - else if ((packets < 5) && (bytes > 512)) - retval = low_latency; - break; - case low_latency: /* 50 usec aka 20000 ints/s */ - if (bytes > 10000) { - /* this if handles the TSO accounting */ - if (bytes/packets > 8000) { - retval = bulk_latency; - } else if ((packets < 10) || ((bytes/packets) > 1200)) { - retval = bulk_latency; - } else if ((packets > 35)) { - retval = lowest_latency; - } - } else if (bytes/packets > 2000) { - retval = bulk_latency; - } else if (packets <= 2 && bytes < 512) { - retval = lowest_latency; - } - break; - case bulk_latency: /* 250 usec aka 4000 ints/s */ - if (bytes > 25000) { - if (packets > 35) - retval = low_latency; - } else if (bytes < 1500) { - retval = low_latency; - } - break; - } - -update_itr_done: - return retval; -} - -static void igb_set_itr(struct igb_adapter *adapter) -{ - u16 current_itr; - u32 new_itr = adapter->itr; - - /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ - if (adapter->link_speed != SPEED_1000) { - current_itr = 0; - new_itr = 4000; - goto set_itr_now; - } - - adapter->rx_itr = igb_update_itr(adapter, - adapter->rx_itr, - adapter->rx_ring->total_packets, - adapter->rx_ring->total_bytes); - - if (adapter->rx_ring->buddy) { - adapter->tx_itr = igb_update_itr(adapter, - adapter->tx_itr, - adapter->tx_ring->total_packets, - adapter->tx_ring->total_bytes); - current_itr = max(adapter->rx_itr, adapter->tx_itr); - } else { - current_itr = adapter->rx_itr; - } - - /* conservative mode (itr 3) eliminates the lowest_latency setting */ - if (adapter->itr_setting == 3 && current_itr == lowest_latency) - current_itr = low_latency; - - switch (current_itr) { - /* counts and packets in update_itr are dependent on these numbers */ - case lowest_latency: - new_itr = 56; /* aka 70,000 ints/sec */ - break; - case low_latency: - new_itr = 196; /* aka 20,000 ints/sec */ - break; - case bulk_latency: - new_itr = 980; /* aka 4,000 ints/sec */ - break; - default: - break; - } - -set_itr_now: - adapter->rx_ring->total_bytes = 0; - adapter->rx_ring->total_packets = 0; - if (adapter->rx_ring->buddy) { - adapter->rx_ring->buddy->total_bytes = 0; - adapter->rx_ring->buddy->total_packets = 0; - } - - if (new_itr != adapter->itr) { - /* this attempts to bias the interrupt rate towards Bulk - * by adding intermediate steps when interrupt rate is - * increasing */ - new_itr = new_itr > adapter->itr ? - max((new_itr * adapter->itr) / - (new_itr + (adapter->itr >> 2)), new_itr) : - new_itr; - /* Don't write the value here; it resets the adapter's - * internal timer, and causes us to delay far longer than - * we should between interrupts. Instead, we write the ITR - * value at the beginning of the next interrupt so the timing - * ends up being correct. - */ - adapter->itr = new_itr; - adapter->rx_ring->itr_val = new_itr; - adapter->rx_ring->set_itr = 1; - } - - return; -} - - -#define IGB_TX_FLAGS_CSUM 0x00000001 -#define IGB_TX_FLAGS_VLAN 0x00000002 -#define IGB_TX_FLAGS_TSO 0x00000004 -#define IGB_TX_FLAGS_IPV4 0x00000008 -#define IGB_TX_FLAGS_TSTAMP 0x00000010 -#define IGB_TX_FLAGS_VLAN_MASK 0xffff0000 -#define IGB_TX_FLAGS_VLAN_SHIFT 16 - -static inline int igb_tso_adv(struct igb_adapter *adapter, - struct igb_ring *tx_ring, - struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) -{ - struct e1000_adv_tx_context_desc *context_desc; - unsigned int i; - int err; - struct igb_buffer *buffer_info; - u32 info = 0, tu_cmd = 0; - u32 mss_l4len_idx, l4len; - *hdr_len = 0; - - if (skb_header_cloned(skb)) { - err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); - if (err) - return err; - } - - l4len = tcp_hdrlen(skb); - *hdr_len += l4len; - - if (skb->protocol == htons(ETH_P_IP)) { - 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); - } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { - 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); - } - - i = tx_ring->next_to_use; - - buffer_info = &tx_ring->buffer_info[i]; - context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); - /* VLAN MACLEN IPLEN */ - if (tx_flags & IGB_TX_FLAGS_VLAN) - info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); - info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); - *hdr_len += skb_network_offset(skb); - info |= skb_network_header_len(skb); - *hdr_len += skb_network_header_len(skb); - context_desc->vlan_macip_lens = cpu_to_le32(info); - - /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ - tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); - - if (skb->protocol == htons(ETH_P_IP)) - tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; - tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; - - context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); - - /* MSS L4LEN IDX */ - mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); - mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); - - /* For 82575, context index must be unique per ring. */ - if (adapter->flags & IGB_FLAG_NEED_CTX_IDX) - mss_l4len_idx |= tx_ring->queue_index << 4; - - context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); - context_desc->seqnum_seed = 0; - - buffer_info->time_stamp = jiffies; - buffer_info->next_to_watch = i; - buffer_info->dma = 0; - i++; - if (i == tx_ring->count) - i = 0; - - tx_ring->next_to_use = i; - - return true; -} - -static inline bool igb_tx_csum_adv(struct igb_adapter *adapter, - struct igb_ring *tx_ring, - struct sk_buff *skb, u32 tx_flags) -{ - struct e1000_adv_tx_context_desc *context_desc; - unsigned int i; - struct igb_buffer *buffer_info; - u32 info = 0, tu_cmd = 0; - - if ((skb->ip_summed == CHECKSUM_PARTIAL) || - (tx_flags & IGB_TX_FLAGS_VLAN)) { - i = tx_ring->next_to_use; - buffer_info = &tx_ring->buffer_info[i]; - context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); - - if (tx_flags & IGB_TX_FLAGS_VLAN) - info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); - info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); - if (skb->ip_summed == CHECKSUM_PARTIAL) - info |= skb_network_header_len(skb); - - context_desc->vlan_macip_lens = cpu_to_le32(info); - - tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); - - if (skb->ip_summed == CHECKSUM_PARTIAL) { - __be16 protocol; - - if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) { - const struct vlan_ethhdr *vhdr = - (const struct vlan_ethhdr*)skb->data; - - protocol = vhdr->h_vlan_encapsulated_proto; - } else { - protocol = skb->protocol; - } - - switch (protocol) { - case cpu_to_be16(ETH_P_IP): - tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; - if (ip_hdr(skb)->protocol == IPPROTO_TCP) - tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; - else if (ip_hdr(skb)->protocol == IPPROTO_SCTP) - tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; - break; - case cpu_to_be16(ETH_P_IPV6): - /* XXX what about other V6 headers?? */ - if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) - tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; - else if (ipv6_hdr(skb)->nexthdr == IPPROTO_SCTP) - tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; - break; - default: - if (unlikely(net_ratelimit())) - dev_warn(&adapter->pdev->dev, - "partial checksum but proto=%x!\n", - skb->protocol); - break; - } - } - - context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); - context_desc->seqnum_seed = 0; - if (adapter->flags & IGB_FLAG_NEED_CTX_IDX) - context_desc->mss_l4len_idx = - cpu_to_le32(tx_ring->queue_index << 4); - else - context_desc->mss_l4len_idx = 0; - - buffer_info->time_stamp = jiffies; - buffer_info->next_to_watch = i; - buffer_info->dma = 0; - - i++; - if (i == tx_ring->count) - i = 0; - tx_ring->next_to_use = i; - - return true; - } - return false; -} - -#define IGB_MAX_TXD_PWR 16 -#define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR) - -static inline int igb_tx_map_adv(struct igb_adapter *adapter, - struct igb_ring *tx_ring, struct sk_buff *skb, - unsigned int first) -{ - struct igb_buffer *buffer_info; - unsigned int len = skb_headlen(skb); - unsigned int count = 0, i; - unsigned int f; - dma_addr_t *map; - - i = tx_ring->next_to_use; - - if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) { - dev_err(&adapter->pdev->dev, "TX DMA map failed\n"); - return 0; - } - - map = skb_shinfo(skb)->dma_maps; - - buffer_info = &tx_ring->buffer_info[i]; - BUG_ON(len >= IGB_MAX_DATA_PER_TXD); - buffer_info->length = len; - /* set time_stamp *before* dma to help avoid a possible race */ - buffer_info->time_stamp = jiffies; - buffer_info->next_to_watch = i; - buffer_info->dma = skb_shinfo(skb)->dma_head; - - for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { - struct skb_frag_struct *frag; - - i++; - if (i == tx_ring->count) - i = 0; - - frag = &skb_shinfo(skb)->frags[f]; - len = frag->size; - - buffer_info = &tx_ring->buffer_info[i]; - BUG_ON(len >= IGB_MAX_DATA_PER_TXD); - buffer_info->length = len; - buffer_info->time_stamp = jiffies; - buffer_info->next_to_watch = i; - buffer_info->dma = map[count]; - count++; - } - - tx_ring->buffer_info[i].skb = skb; - tx_ring->buffer_info[first].next_to_watch = i; - - return count + 1; -} - -static inline void igb_tx_queue_adv(struct igb_adapter *adapter, - struct igb_ring *tx_ring, - int tx_flags, int count, u32 paylen, - u8 hdr_len) -{ - union e1000_adv_tx_desc *tx_desc = NULL; - struct igb_buffer *buffer_info; - u32 olinfo_status = 0, cmd_type_len; - unsigned int i; - - cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | - E1000_ADVTXD_DCMD_DEXT); - - if (tx_flags & IGB_TX_FLAGS_VLAN) - cmd_type_len |= E1000_ADVTXD_DCMD_VLE; - - if (tx_flags & IGB_TX_FLAGS_TSTAMP) - cmd_type_len |= E1000_ADVTXD_MAC_TSTAMP; - - if (tx_flags & IGB_TX_FLAGS_TSO) { - cmd_type_len |= E1000_ADVTXD_DCMD_TSE; - - /* insert tcp checksum */ - olinfo_status |= E1000_TXD_POPTS_TXSM << 8; - - /* insert ip checksum */ - if (tx_flags & IGB_TX_FLAGS_IPV4) - olinfo_status |= E1000_TXD_POPTS_IXSM << 8; - - } else if (tx_flags & IGB_TX_FLAGS_CSUM) { - olinfo_status |= E1000_TXD_POPTS_TXSM << 8; - } - - if ((adapter->flags & IGB_FLAG_NEED_CTX_IDX) && - (tx_flags & (IGB_TX_FLAGS_CSUM | IGB_TX_FLAGS_TSO | - IGB_TX_FLAGS_VLAN))) - olinfo_status |= tx_ring->queue_index << 4; - - olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); - - i = tx_ring->next_to_use; - while (count--) { - buffer_info = &tx_ring->buffer_info[i]; - tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); - tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); - tx_desc->read.cmd_type_len = - cpu_to_le32(cmd_type_len | buffer_info->length); - tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); - i++; - if (i == tx_ring->count) - i = 0; - } - - tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); - /* Force memory writes to complete before letting h/w - * know there are new descriptors to fetch. (Only - * applicable for weak-ordered memory model archs, - * such as IA-64). */ - wmb(); - - tx_ring->next_to_use = i; - writel(i, adapter->hw.hw_addr + tx_ring->tail); - /* we need this if more than one processor can write to our tail - * at a time, it syncronizes IO on IA64/Altix systems */ - mmiowb(); -} - -static int __igb_maybe_stop_tx(struct net_device *netdev, - struct igb_ring *tx_ring, int size) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - - netif_stop_subqueue(netdev, tx_ring->queue_index); - - /* Herbert's original patch had: - * smp_mb__after_netif_stop_queue(); - * but since that doesn't exist yet, just open code it. */ - smp_mb(); - - /* We need to check again in a case another CPU has just - * made room available. */ - if (igb_desc_unused(tx_ring) < size) - return -EBUSY; - - /* A reprieve! */ - netif_wake_subqueue(netdev, tx_ring->queue_index); - ++adapter->restart_queue; - return 0; -} - -static int igb_maybe_stop_tx(struct net_device *netdev, - struct igb_ring *tx_ring, int size) -{ - if (igb_desc_unused(tx_ring) >= size) - return 0; - return __igb_maybe_stop_tx(netdev, tx_ring, size); -} - -static int igb_xmit_frame_ring_adv(struct sk_buff *skb, - struct net_device *netdev, - struct igb_ring *tx_ring) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - unsigned int first; - unsigned int tx_flags = 0; - u8 hdr_len = 0; - int count = 0; - int tso = 0; - union skb_shared_tx *shtx; - - if (test_bit(__IGB_DOWN, &adapter->state)) { - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - - if (skb->len <= 0) { - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - - /* need: 1 descriptor per page, - * + 2 desc gap to keep tail from touching head, - * + 1 desc for skb->data, - * + 1 desc for context descriptor, - * otherwise try next time */ - if (igb_maybe_stop_tx(netdev, tx_ring, skb_shinfo(skb)->nr_frags + 4)) { - /* this is a hard error */ - return NETDEV_TX_BUSY; - } - - /* - * TODO: check that there currently is no other packet with - * time stamping in the queue - * - * When doing time stamping, keep the connection to the socket - * a while longer: it is still needed by skb_hwtstamp_tx(), - * called either in igb_tx_hwtstamp() or by our caller when - * doing software time stamping. - */ - shtx = skb_tx(skb); - if (unlikely(shtx->hardware)) { - shtx->in_progress = 1; - tx_flags |= IGB_TX_FLAGS_TSTAMP; - } - - if (adapter->vlgrp && vlan_tx_tag_present(skb)) { - tx_flags |= IGB_TX_FLAGS_VLAN; - tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); - } - - if (skb->protocol == htons(ETH_P_IP)) - tx_flags |= IGB_TX_FLAGS_IPV4; - - first = tx_ring->next_to_use; - tso = skb_is_gso(skb) ? igb_tso_adv(adapter, tx_ring, skb, tx_flags, - &hdr_len) : 0; - - if (tso < 0) { - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - - if (tso) - tx_flags |= IGB_TX_FLAGS_TSO; - else if (igb_tx_csum_adv(adapter, tx_ring, skb, tx_flags) && - (skb->ip_summed == CHECKSUM_PARTIAL)) - tx_flags |= IGB_TX_FLAGS_CSUM; - - /* - * count reflects descriptors mapped, if 0 then mapping error - * has occured and we need to rewind the descriptor queue - */ - count = igb_tx_map_adv(adapter, tx_ring, skb, first); - - if (count) { - igb_tx_queue_adv(adapter, tx_ring, tx_flags, count, - skb->len, hdr_len); - /* Make sure there is space in the ring for the next send. */ - igb_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 4); - } else { - dev_kfree_skb_any(skb); - tx_ring->buffer_info[first].time_stamp = 0; - tx_ring->next_to_use = first; - } - - return NETDEV_TX_OK; -} - -static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *netdev) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct igb_ring *tx_ring; - - int r_idx = 0; - r_idx = skb->queue_mapping & (IGB_ABS_MAX_TX_QUEUES - 1); - tx_ring = adapter->multi_tx_table[r_idx]; - - /* This goes back to the question of how to logically map a tx queue - * to a flow. Right now, performance is impacted slightly negatively - * if using multiple tx queues. If the stack breaks away from a - * single qdisc implementation, we can look at this again. */ - return (igb_xmit_frame_ring_adv(skb, netdev, tx_ring)); -} - -/** - * igb_tx_timeout - Respond to a Tx Hang - * @netdev: network interface device structure - **/ -static void igb_tx_timeout(struct net_device *netdev) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - - /* Do the reset outside of interrupt context */ - adapter->tx_timeout_count++; - schedule_work(&adapter->reset_task); - wr32(E1000_EICS, - (adapter->eims_enable_mask & ~adapter->eims_other)); -} - -static void igb_reset_task(struct work_struct *work) -{ - struct igb_adapter *adapter; - adapter = container_of(work, struct igb_adapter, reset_task); - - igb_reinit_locked(adapter); -} - -/** - * igb_get_stats - Get System Network Statistics - * @netdev: network interface device structure - * - * Returns the address of the device statistics structure. - * The statistics are actually updated from the timer callback. - **/ -static struct net_device_stats *igb_get_stats(struct net_device *netdev) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - - /* only return the current stats */ - return &adapter->net_stats; -} - -/** - * igb_change_mtu - Change the Maximum Transfer Unit - * @netdev: network interface device structure - * @new_mtu: new value for maximum frame size - * - * Returns 0 on success, negative on failure - **/ -static int igb_change_mtu(struct net_device *netdev, int new_mtu) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; - - if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || - (max_frame > MAX_JUMBO_FRAME_SIZE)) { - dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); - return -EINVAL; - } - - if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { - dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); - return -EINVAL; - } - - while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) - msleep(1); - - /* igb_down has a dependency on max_frame_size */ - adapter->max_frame_size = max_frame; - if (netif_running(netdev)) - igb_down(adapter); - - /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN - * means we reserve 2 more, this pushes us to allocate from the next - * larger slab size. - * i.e. RXBUFFER_2048 --> size-4096 slab - */ - - if (max_frame <= IGB_RXBUFFER_256) - adapter->rx_buffer_len = IGB_RXBUFFER_256; - else if (max_frame <= IGB_RXBUFFER_512) - adapter->rx_buffer_len = IGB_RXBUFFER_512; - else if (max_frame <= IGB_RXBUFFER_1024) - adapter->rx_buffer_len = IGB_RXBUFFER_1024; - else if (max_frame <= IGB_RXBUFFER_2048) - adapter->rx_buffer_len = IGB_RXBUFFER_2048; - else -#if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 - adapter->rx_buffer_len = IGB_RXBUFFER_16384; -#else - adapter->rx_buffer_len = PAGE_SIZE / 2; -#endif - - /* if sr-iov is enabled we need to force buffer size to 1K or larger */ - if (adapter->vfs_allocated_count && - (adapter->rx_buffer_len < IGB_RXBUFFER_1024)) - adapter->rx_buffer_len = IGB_RXBUFFER_1024; - - /* adjust allocation if LPE protects us, and we aren't using SBP */ - if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || - (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)) - adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; - - dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", - netdev->mtu, new_mtu); - netdev->mtu = new_mtu; - - if (netif_running(netdev)) - igb_up(adapter); - else - igb_reset(adapter); - - clear_bit(__IGB_RESETTING, &adapter->state); - - return 0; -} - -/** - * igb_update_stats - Update the board statistics counters - * @adapter: board private structure - **/ - -void igb_update_stats(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - struct pci_dev *pdev = adapter->pdev; - u16 phy_tmp; - -#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF - - /* - * Prevent stats update while adapter is being reset, or if the pci - * connection is down. - */ - if (adapter->link_speed == 0) - return; - if (pci_channel_offline(pdev)) - return; - - adapter->stats.crcerrs += rd32(E1000_CRCERRS); - adapter->stats.gprc += rd32(E1000_GPRC); - adapter->stats.gorc += rd32(E1000_GORCL); - rd32(E1000_GORCH); /* clear GORCL */ - adapter->stats.bprc += rd32(E1000_BPRC); - adapter->stats.mprc += rd32(E1000_MPRC); - adapter->stats.roc += rd32(E1000_ROC); - - adapter->stats.prc64 += rd32(E1000_PRC64); - adapter->stats.prc127 += rd32(E1000_PRC127); - adapter->stats.prc255 += rd32(E1000_PRC255); - adapter->stats.prc511 += rd32(E1000_PRC511); - adapter->stats.prc1023 += rd32(E1000_PRC1023); - adapter->stats.prc1522 += rd32(E1000_PRC1522); - adapter->stats.symerrs += rd32(E1000_SYMERRS); - adapter->stats.sec += rd32(E1000_SEC); - - adapter->stats.mpc += rd32(E1000_MPC); - adapter->stats.scc += rd32(E1000_SCC); - adapter->stats.ecol += rd32(E1000_ECOL); - adapter->stats.mcc += rd32(E1000_MCC); - adapter->stats.latecol += rd32(E1000_LATECOL); - adapter->stats.dc += rd32(E1000_DC); - adapter->stats.rlec += rd32(E1000_RLEC); - adapter->stats.xonrxc += rd32(E1000_XONRXC); - adapter->stats.xontxc += rd32(E1000_XONTXC); - adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); - adapter->stats.xofftxc += rd32(E1000_XOFFTXC); - adapter->stats.fcruc += rd32(E1000_FCRUC); - adapter->stats.gptc += rd32(E1000_GPTC); - adapter->stats.gotc += rd32(E1000_GOTCL); - rd32(E1000_GOTCH); /* clear GOTCL */ - adapter->stats.rnbc += rd32(E1000_RNBC); - adapter->stats.ruc += rd32(E1000_RUC); - adapter->stats.rfc += rd32(E1000_RFC); - adapter->stats.rjc += rd32(E1000_RJC); - adapter->stats.tor += rd32(E1000_TORH); - adapter->stats.tot += rd32(E1000_TOTH); - adapter->stats.tpr += rd32(E1000_TPR); - - adapter->stats.ptc64 += rd32(E1000_PTC64); - adapter->stats.ptc127 += rd32(E1000_PTC127); - adapter->stats.ptc255 += rd32(E1000_PTC255); - adapter->stats.ptc511 += rd32(E1000_PTC511); - adapter->stats.ptc1023 += rd32(E1000_PTC1023); - adapter->stats.ptc1522 += rd32(E1000_PTC1522); - - adapter->stats.mptc += rd32(E1000_MPTC); - adapter->stats.bptc += rd32(E1000_BPTC); - - /* used for adaptive IFS */ - - hw->mac.tx_packet_delta = rd32(E1000_TPT); - adapter->stats.tpt += hw->mac.tx_packet_delta; - hw->mac.collision_delta = rd32(E1000_COLC); - adapter->stats.colc += hw->mac.collision_delta; - - adapter->stats.algnerrc += rd32(E1000_ALGNERRC); - adapter->stats.rxerrc += rd32(E1000_RXERRC); - adapter->stats.tncrs += rd32(E1000_TNCRS); - adapter->stats.tsctc += rd32(E1000_TSCTC); - adapter->stats.tsctfc += rd32(E1000_TSCTFC); - - adapter->stats.iac += rd32(E1000_IAC); - adapter->stats.icrxoc += rd32(E1000_ICRXOC); - adapter->stats.icrxptc += rd32(E1000_ICRXPTC); - adapter->stats.icrxatc += rd32(E1000_ICRXATC); - adapter->stats.ictxptc += rd32(E1000_ICTXPTC); - adapter->stats.ictxatc += rd32(E1000_ICTXATC); - adapter->stats.ictxqec += rd32(E1000_ICTXQEC); - adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); - adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); - - /* Fill out the OS statistics structure */ - adapter->net_stats.multicast = adapter->stats.mprc; - adapter->net_stats.collisions = adapter->stats.colc; - - /* Rx Errors */ - - if (hw->mac.type != e1000_82575) { - u32 rqdpc_tmp; - u64 rqdpc_total = 0; - int i; - /* Read out drops stats per RX queue. Notice RQDPC (Receive - * Queue Drop Packet Count) stats only gets incremented, if - * the DROP_EN but it set (in the SRRCTL register for that - * queue). If DROP_EN bit is NOT set, then the some what - * equivalent count is stored in RNBC (not per queue basis). - * Also note the drop count is due to lack of available - * descriptors. - */ - for (i = 0; i < adapter->num_rx_queues; i++) { - rqdpc_tmp = rd32(E1000_RQDPC(i)) & 0xFFF; - adapter->rx_ring[i].rx_stats.drops += rqdpc_tmp; - rqdpc_total += adapter->rx_ring[i].rx_stats.drops; - } - adapter->net_stats.rx_fifo_errors = rqdpc_total; - } - - /* Note RNBC (Receive No Buffers Count) is an not an exact - * drop count as the hardware FIFO might save the day. Thats - * one of the reason for saving it in rx_fifo_errors, as its - * potentially not a true drop. - */ - adapter->net_stats.rx_fifo_errors += adapter->stats.rnbc; - - /* RLEC on some newer hardware can be incorrect so build - * our own version based on RUC and ROC */ - adapter->net_stats.rx_errors = adapter->stats.rxerrc + - adapter->stats.crcerrs + adapter->stats.algnerrc + - adapter->stats.ruc + adapter->stats.roc + - adapter->stats.cexterr; - adapter->net_stats.rx_length_errors = adapter->stats.ruc + - adapter->stats.roc; - adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; - adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; - adapter->net_stats.rx_missed_errors = adapter->stats.mpc; - - /* Tx Errors */ - adapter->net_stats.tx_errors = adapter->stats.ecol + - adapter->stats.latecol; - adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; - adapter->net_stats.tx_window_errors = adapter->stats.latecol; - adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; - - /* Tx Dropped needs to be maintained elsewhere */ - - /* Phy Stats */ - if (hw->phy.media_type == e1000_media_type_copper) { - if ((adapter->link_speed == SPEED_1000) && - (!igb_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { - phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; - adapter->phy_stats.idle_errors += phy_tmp; - } - } - - /* Management Stats */ - adapter->stats.mgptc += rd32(E1000_MGTPTC); - adapter->stats.mgprc += rd32(E1000_MGTPRC); - adapter->stats.mgpdc += rd32(E1000_MGTPDC); -} - -static irqreturn_t igb_msix_other(int irq, void *data) -{ - struct net_device *netdev = data; - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - u32 icr = rd32(E1000_ICR); - - /* reading ICR causes bit 31 of EICR to be cleared */ - - if(icr & E1000_ICR_DOUTSYNC) { - /* HW is reporting DMA is out of sync */ - adapter->stats.doosync++; - } - - /* Check for a mailbox event */ - if (icr & E1000_ICR_VMMB) - igb_msg_task(adapter); - - if (icr & E1000_ICR_LSC) { - hw->mac.get_link_status = 1; - /* guard against interrupt when we're going down */ - if (!test_bit(__IGB_DOWN, &adapter->state)) - mod_timer(&adapter->watchdog_timer, jiffies + 1); - } - - wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC | E1000_IMS_VMMB); - wr32(E1000_EIMS, adapter->eims_other); - - return IRQ_HANDLED; -} - -static irqreturn_t igb_msix_tx(int irq, void *data) -{ - struct igb_ring *tx_ring = data; - struct igb_adapter *adapter = tx_ring->adapter; - struct e1000_hw *hw = &adapter->hw; - -#ifdef CONFIG_IGB_DCA - if (adapter->flags & IGB_FLAG_DCA_ENABLED) - igb_update_tx_dca(tx_ring); -#endif - - tx_ring->total_bytes = 0; - tx_ring->total_packets = 0; - - /* auto mask will automatically reenable the interrupt when we write - * EICS */ - if (!igb_clean_tx_irq(tx_ring)) - /* Ring was not completely cleaned, so fire another interrupt */ - wr32(E1000_EICS, tx_ring->eims_value); - else - wr32(E1000_EIMS, tx_ring->eims_value); - - return IRQ_HANDLED; -} - -static void igb_write_itr(struct igb_ring *ring) -{ - struct e1000_hw *hw = &ring->adapter->hw; - if ((ring->adapter->itr_setting & 3) && ring->set_itr) { - switch (hw->mac.type) { - case e1000_82576: - wr32(ring->itr_register, ring->itr_val | - 0x80000000); - break; - default: - wr32(ring->itr_register, ring->itr_val | - (ring->itr_val << 16)); - break; - } - ring->set_itr = 0; - } -} - -static irqreturn_t igb_msix_rx(int irq, void *data) -{ - struct igb_ring *rx_ring = data; - - /* Write the ITR value calculated at the end of the - * previous interrupt. - */ - - igb_write_itr(rx_ring); - - if (napi_schedule_prep(&rx_ring->napi)) - __napi_schedule(&rx_ring->napi); - -#ifdef CONFIG_IGB_DCA - if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) - igb_update_rx_dca(rx_ring); -#endif - return IRQ_HANDLED; -} - -#ifdef CONFIG_IGB_DCA -static void igb_update_rx_dca(struct igb_ring *rx_ring) -{ - u32 dca_rxctrl; - struct igb_adapter *adapter = rx_ring->adapter; - struct e1000_hw *hw = &adapter->hw; - int cpu = get_cpu(); - int q = rx_ring->reg_idx; - - if (rx_ring->cpu != cpu) { - dca_rxctrl = rd32(E1000_DCA_RXCTRL(q)); - if (hw->mac.type == e1000_82576) { - dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576; - dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << - E1000_DCA_RXCTRL_CPUID_SHIFT; - } else { - dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK; - dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); - } - dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN; - dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN; - dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN; - wr32(E1000_DCA_RXCTRL(q), dca_rxctrl); - rx_ring->cpu = cpu; - } - put_cpu(); -} - -static void igb_update_tx_dca(struct igb_ring *tx_ring) -{ - u32 dca_txctrl; - struct igb_adapter *adapter = tx_ring->adapter; - struct e1000_hw *hw = &adapter->hw; - int cpu = get_cpu(); - int q = tx_ring->reg_idx; - - if (tx_ring->cpu != cpu) { - dca_txctrl = rd32(E1000_DCA_TXCTRL(q)); - if (hw->mac.type == e1000_82576) { - dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576; - dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << - E1000_DCA_TXCTRL_CPUID_SHIFT; - } else { - dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK; - dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); - } - dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN; - wr32(E1000_DCA_TXCTRL(q), dca_txctrl); - tx_ring->cpu = cpu; - } - put_cpu(); -} - -static void igb_setup_dca(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - int i; - - if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) - return; - - /* Always use CB2 mode, difference is masked in the CB driver. */ - wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); - - for (i = 0; i < adapter->num_tx_queues; i++) { - adapter->tx_ring[i].cpu = -1; - igb_update_tx_dca(&adapter->tx_ring[i]); - } - for (i = 0; i < adapter->num_rx_queues; i++) { - adapter->rx_ring[i].cpu = -1; - igb_update_rx_dca(&adapter->rx_ring[i]); - } -} - -static int __igb_notify_dca(struct device *dev, void *data) -{ - struct net_device *netdev = dev_get_drvdata(dev); - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - unsigned long event = *(unsigned long *)data; - - switch (event) { - case DCA_PROVIDER_ADD: - /* if already enabled, don't do it again */ - if (adapter->flags & IGB_FLAG_DCA_ENABLED) - break; - /* Always use CB2 mode, difference is masked - * in the CB driver. */ - wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); - if (dca_add_requester(dev) == 0) { - adapter->flags |= IGB_FLAG_DCA_ENABLED; - dev_info(&adapter->pdev->dev, "DCA enabled\n"); - igb_setup_dca(adapter); - break; - } - /* Fall Through since DCA is disabled. */ - case DCA_PROVIDER_REMOVE: - if (adapter->flags & IGB_FLAG_DCA_ENABLED) { - /* without this a class_device is left - * hanging around in the sysfs model */ - dca_remove_requester(dev); - dev_info(&adapter->pdev->dev, "DCA disabled\n"); - adapter->flags &= ~IGB_FLAG_DCA_ENABLED; - wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); - } - break; - } - - return 0; -} - -static int igb_notify_dca(struct notifier_block *nb, unsigned long event, - void *p) -{ - int ret_val; - - ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, - __igb_notify_dca); - - return ret_val ? NOTIFY_BAD : NOTIFY_DONE; -} -#endif /* CONFIG_IGB_DCA */ - -static void igb_ping_all_vfs(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - u32 ping; - int i; - - for (i = 0 ; i < adapter->vfs_allocated_count; i++) { - ping = E1000_PF_CONTROL_MSG; - if (adapter->vf_data[i].clear_to_send) - ping |= E1000_VT_MSGTYPE_CTS; - igb_write_mbx(hw, &ping, 1, i); - } -} - -static int igb_set_vf_multicasts(struct igb_adapter *adapter, - u32 *msgbuf, u32 vf) -{ - int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; - u16 *hash_list = (u16 *)&msgbuf[1]; - struct vf_data_storage *vf_data = &adapter->vf_data[vf]; - int i; - - /* only up to 30 hash values supported */ - if (n > 30) - n = 30; - - /* salt away the number of multi cast addresses assigned - * to this VF for later use to restore when the PF multi cast - * list changes - */ - vf_data->num_vf_mc_hashes = n; - - /* VFs are limited to using the MTA hash table for their multicast - * addresses */ - for (i = 0; i < n; i++) - vf_data->vf_mc_hashes[i] = hash_list[i];; - - /* Flush and reset the mta with the new values */ - igb_set_multi(adapter->netdev); - - return 0; -} - -static void igb_restore_vf_multicasts(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - struct vf_data_storage *vf_data; - int i, j; - - for (i = 0; i < adapter->vfs_allocated_count; i++) { - vf_data = &adapter->vf_data[i]; - for (j = 0; j < vf_data->num_vf_mc_hashes; j++) - igb_mta_set(hw, vf_data->vf_mc_hashes[j]); - } -} - -static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf) -{ - struct e1000_hw *hw = &adapter->hw; - u32 pool_mask, reg, vid; - int i; - - pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); - - /* Find the vlan filter for this id */ - for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { - reg = rd32(E1000_VLVF(i)); - - /* remove the vf from the pool */ - reg &= ~pool_mask; - - /* if pool is empty then remove entry from vfta */ - if (!(reg & E1000_VLVF_POOLSEL_MASK) && - (reg & E1000_VLVF_VLANID_ENABLE)) { - reg = 0; - vid = reg & E1000_VLVF_VLANID_MASK; - igb_vfta_set(hw, vid, false); - } - - wr32(E1000_VLVF(i), reg); - } -} - -static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf) -{ - struct e1000_hw *hw = &adapter->hw; - u32 reg, i; - - /* It is an error to call this function when VFs are not enabled */ - if (!adapter->vfs_allocated_count) - return -1; - - /* Find the vlan filter for this id */ - for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { - reg = rd32(E1000_VLVF(i)); - if ((reg & E1000_VLVF_VLANID_ENABLE) && - vid == (reg & E1000_VLVF_VLANID_MASK)) - break; - } - - if (add) { - if (i == E1000_VLVF_ARRAY_SIZE) { - /* Did not find a matching VLAN ID entry that was - * enabled. Search for a free filter entry, i.e. - * one without the enable bit set - */ - for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { - reg = rd32(E1000_VLVF(i)); - if (!(reg & E1000_VLVF_VLANID_ENABLE)) - break; - } - } - if (i < E1000_VLVF_ARRAY_SIZE) { - /* Found an enabled/available entry */ - reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); - - /* if !enabled we need to set this up in vfta */ - if (!(reg & E1000_VLVF_VLANID_ENABLE)) { - /* add VID to filter table, if bit already set - * PF must have added it outside of table */ - if (igb_vfta_set(hw, vid, true)) - reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + - adapter->vfs_allocated_count); - reg |= E1000_VLVF_VLANID_ENABLE; - } - reg &= ~E1000_VLVF_VLANID_MASK; - reg |= vid; - - wr32(E1000_VLVF(i), reg); - return 0; - } - } else { - if (i < E1000_VLVF_ARRAY_SIZE) { - /* remove vf from the pool */ - reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf)); - /* if pool is empty then remove entry from vfta */ - if (!(reg & E1000_VLVF_POOLSEL_MASK)) { - reg = 0; - igb_vfta_set(hw, vid, false); - } - wr32(E1000_VLVF(i), reg); - return 0; - } - } - return -1; -} - -static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) -{ - int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; - int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); - - return igb_vlvf_set(adapter, vid, add, vf); -} - -static inline void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf) -{ - struct e1000_hw *hw = &adapter->hw; - - /* disable mailbox functionality for vf */ - adapter->vf_data[vf].clear_to_send = false; - - /* reset offloads to defaults */ - igb_set_vmolr(hw, vf); - - /* reset vlans for device */ - igb_clear_vf_vfta(adapter, vf); - - /* reset multicast table array for vf */ - adapter->vf_data[vf].num_vf_mc_hashes = 0; - - /* Flush and reset the mta with the new values */ - igb_set_multi(adapter->netdev); -} - -static inline void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) -{ - struct e1000_hw *hw = &adapter->hw; - unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; - u32 reg, msgbuf[3]; - u8 *addr = (u8 *)(&msgbuf[1]); - - /* process all the same items cleared in a function level reset */ - igb_vf_reset_event(adapter, vf); - - /* set vf mac address */ - igb_rar_set(hw, vf_mac, vf + 1); - igb_set_rah_pool(hw, vf, vf + 1); - - /* enable transmit and receive for vf */ - reg = rd32(E1000_VFTE); - wr32(E1000_VFTE, reg | (1 << vf)); - reg = rd32(E1000_VFRE); - wr32(E1000_VFRE, reg | (1 << vf)); - - /* enable mailbox functionality for vf */ - adapter->vf_data[vf].clear_to_send = true; - - /* reply to reset with ack and vf mac address */ - msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK; - memcpy(addr, vf_mac, 6); - igb_write_mbx(hw, msgbuf, 3, vf); -} - -static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf) -{ - unsigned char *addr = (char *)&msg[1]; - int err = -1; - - if (is_valid_ether_addr(addr)) - err = igb_set_vf_mac(adapter, vf, addr); - - return err; - -} - -static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf) -{ - struct e1000_hw *hw = &adapter->hw; - u32 msg = E1000_VT_MSGTYPE_NACK; - - /* if device isn't clear to send it shouldn't be reading either */ - if (!adapter->vf_data[vf].clear_to_send) - igb_write_mbx(hw, &msg, 1, vf); -} - - -static void igb_msg_task(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - u32 vf; - - for (vf = 0; vf < adapter->vfs_allocated_count; vf++) { - /* process any reset requests */ - if (!igb_check_for_rst(hw, vf)) { - adapter->vf_data[vf].clear_to_send = false; - igb_vf_reset_event(adapter, vf); - } - - /* process any messages pending */ - if (!igb_check_for_msg(hw, vf)) - igb_rcv_msg_from_vf(adapter, vf); - - /* process any acks */ - if (!igb_check_for_ack(hw, vf)) - igb_rcv_ack_from_vf(adapter, vf); - - } -} - -static int igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) -{ - u32 mbx_size = E1000_VFMAILBOX_SIZE; - u32 msgbuf[mbx_size]; - struct e1000_hw *hw = &adapter->hw; - s32 retval; - - retval = igb_read_mbx(hw, msgbuf, mbx_size, vf); - - if (retval) - dev_err(&adapter->pdev->dev, - "Error receiving message from VF\n"); - - /* this is a message we already processed, do nothing */ - if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK)) - return retval; - - /* - * until the vf completes a reset it should not be - * allowed to start any configuration. - */ - - if (msgbuf[0] == E1000_VF_RESET) { - igb_vf_reset_msg(adapter, vf); - - return retval; - } - - if (!adapter->vf_data[vf].clear_to_send) { - msgbuf[0] |= E1000_VT_MSGTYPE_NACK; - igb_write_mbx(hw, msgbuf, 1, vf); - return retval; - } - - switch ((msgbuf[0] & 0xFFFF)) { - case E1000_VF_SET_MAC_ADDR: - retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); - break; - case E1000_VF_SET_MULTICAST: - retval = igb_set_vf_multicasts(adapter, msgbuf, vf); - break; - case E1000_VF_SET_LPE: - retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf); - break; - case E1000_VF_SET_VLAN: - retval = igb_set_vf_vlan(adapter, msgbuf, vf); - break; - default: - dev_err(&adapter->pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); - retval = -1; - break; - } - - /* notify the VF of the results of what it sent us */ - if (retval) - msgbuf[0] |= E1000_VT_MSGTYPE_NACK; - else - msgbuf[0] |= E1000_VT_MSGTYPE_ACK; - - msgbuf[0] |= E1000_VT_MSGTYPE_CTS; - - igb_write_mbx(hw, msgbuf, 1, vf); - - return retval; -} - -/** - * igb_intr_msi - Interrupt Handler - * @irq: interrupt number - * @data: pointer to a network interface device structure - **/ -static irqreturn_t igb_intr_msi(int irq, void *data) -{ - struct net_device *netdev = data; - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - /* read ICR disables interrupts using IAM */ - u32 icr = rd32(E1000_ICR); - - igb_write_itr(adapter->rx_ring); - - if(icr & E1000_ICR_DOUTSYNC) { - /* HW is reporting DMA is out of sync */ - adapter->stats.doosync++; - } - - if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { - hw->mac.get_link_status = 1; - if (!test_bit(__IGB_DOWN, &adapter->state)) - mod_timer(&adapter->watchdog_timer, jiffies + 1); - } - - napi_schedule(&adapter->rx_ring[0].napi); - - return IRQ_HANDLED; -} - -/** - * igb_intr - Legacy Interrupt Handler - * @irq: interrupt number - * @data: pointer to a network interface device structure - **/ -static irqreturn_t igb_intr(int irq, void *data) -{ - struct net_device *netdev = data; - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No - * need for the IMC write */ - u32 icr = rd32(E1000_ICR); - if (!icr) - return IRQ_NONE; /* Not our interrupt */ - - igb_write_itr(adapter->rx_ring); - - /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is - * not set, then the adapter didn't send an interrupt */ - if (!(icr & E1000_ICR_INT_ASSERTED)) - return IRQ_NONE; - - if(icr & E1000_ICR_DOUTSYNC) { - /* HW is reporting DMA is out of sync */ - adapter->stats.doosync++; - } - - if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { - hw->mac.get_link_status = 1; - /* guard against interrupt when we're going down */ - if (!test_bit(__IGB_DOWN, &adapter->state)) - mod_timer(&adapter->watchdog_timer, jiffies + 1); - } - - napi_schedule(&adapter->rx_ring[0].napi); - - return IRQ_HANDLED; -} - -static inline void igb_rx_irq_enable(struct igb_ring *rx_ring) -{ - struct igb_adapter *adapter = rx_ring->adapter; - struct e1000_hw *hw = &adapter->hw; - - if (adapter->itr_setting & 3) { - if (adapter->num_rx_queues == 1) - igb_set_itr(adapter); - else - igb_update_ring_itr(rx_ring); - } - - if (!test_bit(__IGB_DOWN, &adapter->state)) { - if (adapter->msix_entries) - wr32(E1000_EIMS, rx_ring->eims_value); - else - igb_irq_enable(adapter); - } -} - -/** - * igb_poll - NAPI Rx polling callback - * @napi: napi polling structure - * @budget: count of how many packets we should handle - **/ -static int igb_poll(struct napi_struct *napi, int budget) -{ - struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi); - int work_done = 0; - -#ifdef CONFIG_IGB_DCA - if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) - igb_update_rx_dca(rx_ring); -#endif - igb_clean_rx_irq_adv(rx_ring, &work_done, budget); - - if (rx_ring->buddy) { -#ifdef CONFIG_IGB_DCA - if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) - igb_update_tx_dca(rx_ring->buddy); -#endif - if (!igb_clean_tx_irq(rx_ring->buddy)) - work_done = budget; - } - - /* If not enough Rx work done, exit the polling mode */ - if (work_done < budget) { - napi_complete(napi); - igb_rx_irq_enable(rx_ring); - } - - return work_done; -} - -/** - * igb_hwtstamp - utility function which checks for TX time stamp - * @adapter: board private structure - * @skb: packet that was just sent - * - * If we were asked to do hardware stamping and such a time stamp is - * available, then it must have been for this skb here because we only - * allow only one such packet into the queue. - */ -static void igb_tx_hwtstamp(struct igb_adapter *adapter, struct sk_buff *skb) -{ - union skb_shared_tx *shtx = skb_tx(skb); - struct e1000_hw *hw = &adapter->hw; - - if (unlikely(shtx->hardware)) { - u32 valid = rd32(E1000_TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID; - if (valid) { - u64 regval = rd32(E1000_TXSTMPL); - u64 ns; - struct skb_shared_hwtstamps shhwtstamps; - - memset(&shhwtstamps, 0, sizeof(shhwtstamps)); - regval |= (u64)rd32(E1000_TXSTMPH) << 32; - ns = timecounter_cyc2time(&adapter->clock, - regval); - timecompare_update(&adapter->compare, ns); - shhwtstamps.hwtstamp = ns_to_ktime(ns); - shhwtstamps.syststamp = - timecompare_transform(&adapter->compare, ns); - skb_tstamp_tx(skb, &shhwtstamps); - } - } -} - -/** - * igb_clean_tx_irq - Reclaim resources after transmit completes - * @adapter: board private structure - * returns true if ring is completely cleaned - **/ -static bool igb_clean_tx_irq(struct igb_ring *tx_ring) -{ - struct igb_adapter *adapter = tx_ring->adapter; - struct net_device *netdev = adapter->netdev; - struct e1000_hw *hw = &adapter->hw; - struct igb_buffer *buffer_info; - struct sk_buff *skb; - union e1000_adv_tx_desc *tx_desc, *eop_desc; - unsigned int total_bytes = 0, total_packets = 0; - unsigned int i, eop, count = 0; - bool cleaned = false; - - i = tx_ring->next_to_clean; - eop = tx_ring->buffer_info[i].next_to_watch; - eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); - - while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && - (count < tx_ring->count)) { - for (cleaned = false; !cleaned; count++) { - tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); - buffer_info = &tx_ring->buffer_info[i]; - cleaned = (i == eop); - skb = buffer_info->skb; - - if (skb) { - unsigned int segs, bytecount; - /* gso_segs is currently only valid for tcp */ - segs = skb_shinfo(skb)->gso_segs ?: 1; - /* multiply data chunks by size of headers */ - bytecount = ((segs - 1) * skb_headlen(skb)) + - skb->len; - total_packets += segs; - total_bytes += bytecount; - - igb_tx_hwtstamp(adapter, skb); - } - - igb_unmap_and_free_tx_resource(adapter, buffer_info); - tx_desc->wb.status = 0; - - i++; - if (i == tx_ring->count) - i = 0; - } - eop = tx_ring->buffer_info[i].next_to_watch; - eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); - } - - tx_ring->next_to_clean = i; - - if (unlikely(count && - netif_carrier_ok(netdev) && - igb_desc_unused(tx_ring) >= IGB_TX_QUEUE_WAKE)) { - /* Make sure that anybody stopping the queue after this - * sees the new next_to_clean. - */ - smp_mb(); - if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && - !(test_bit(__IGB_DOWN, &adapter->state))) { - netif_wake_subqueue(netdev, tx_ring->queue_index); - ++adapter->restart_queue; - } - } - - if (tx_ring->detect_tx_hung) { - /* Detect a transmit hang in hardware, this serializes the - * check with the clearing of time_stamp and movement of i */ - tx_ring->detect_tx_hung = false; - if (tx_ring->buffer_info[i].time_stamp && - time_after(jiffies, tx_ring->buffer_info[i].time_stamp + - (adapter->tx_timeout_factor * HZ)) - && !(rd32(E1000_STATUS) & - E1000_STATUS_TXOFF)) { - - /* detected Tx unit hang */ - dev_err(&adapter->pdev->dev, - "Detected Tx Unit Hang\n" - " Tx Queue <%d>\n" - " TDH <%x>\n" - " TDT <%x>\n" - " next_to_use <%x>\n" - " next_to_clean <%x>\n" - "buffer_info[next_to_clean]\n" - " time_stamp <%lx>\n" - " next_to_watch <%x>\n" - " jiffies <%lx>\n" - " desc.status <%x>\n", - tx_ring->queue_index, - readl(adapter->hw.hw_addr + tx_ring->head), - readl(adapter->hw.hw_addr + tx_ring->tail), - tx_ring->next_to_use, - tx_ring->next_to_clean, - tx_ring->buffer_info[i].time_stamp, - eop, - jiffies, - eop_desc->wb.status); - netif_stop_subqueue(netdev, tx_ring->queue_index); - } - } - tx_ring->total_bytes += total_bytes; - tx_ring->total_packets += total_packets; - tx_ring->tx_stats.bytes += total_bytes; - tx_ring->tx_stats.packets += total_packets; - adapter->net_stats.tx_bytes += total_bytes; - adapter->net_stats.tx_packets += total_packets; - return (count < tx_ring->count); -} - -/** - * igb_receive_skb - helper function to handle rx indications - * @ring: pointer to receive ring receving this packet - * @status: descriptor status field as written by hardware - * @rx_desc: receive descriptor containing vlan and type information. - * @skb: pointer to sk_buff to be indicated to stack - **/ -static void igb_receive_skb(struct igb_ring *ring, u8 status, - union e1000_adv_rx_desc * rx_desc, - struct sk_buff *skb) -{ - struct igb_adapter * adapter = ring->adapter; - bool vlan_extracted = (adapter->vlgrp && (status & E1000_RXD_STAT_VP)); - - skb_record_rx_queue(skb, ring->queue_index); - if (vlan_extracted) - vlan_gro_receive(&ring->napi, adapter->vlgrp, - le16_to_cpu(rx_desc->wb.upper.vlan), - skb); - else - napi_gro_receive(&ring->napi, skb); -} - -static inline void igb_rx_checksum_adv(struct igb_adapter *adapter, - u32 status_err, struct sk_buff *skb) -{ - skb->ip_summed = CHECKSUM_NONE; - - /* Ignore Checksum bit is set or checksum is disabled through ethtool */ - if ((status_err & E1000_RXD_STAT_IXSM) || - (adapter->flags & IGB_FLAG_RX_CSUM_DISABLED)) - return; - /* TCP/UDP checksum error bit is set */ - if (status_err & - (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { - /* - * work around errata with sctp packets where the TCPE aka - * L4E bit is set incorrectly on 64 byte (60 byte w/o crc) - * packets, (aka let the stack check the crc32c) - */ - if (!((adapter->hw.mac.type == e1000_82576) && - (skb->len == 60))) - adapter->hw_csum_err++; - /* let the stack verify checksum errors */ - return; - } - /* It must be a TCP or UDP packet with a valid checksum */ - if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) - skb->ip_summed = CHECKSUM_UNNECESSARY; - - dev_dbg(&adapter->pdev->dev, "cksum success: bits %08X\n", status_err); - adapter->hw_csum_good++; -} - -static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring, - int *work_done, int budget) -{ - struct igb_adapter *adapter = rx_ring->adapter; - struct net_device *netdev = adapter->netdev; - struct e1000_hw *hw = &adapter->hw; - struct pci_dev *pdev = adapter->pdev; - union e1000_adv_rx_desc *rx_desc , *next_rxd; - struct igb_buffer *buffer_info , *next_buffer; - struct sk_buff *skb; - bool cleaned = false; - int cleaned_count = 0; - unsigned int total_bytes = 0, total_packets = 0; - unsigned int i; - u32 length, hlen, staterr; - - i = rx_ring->next_to_clean; - buffer_info = &rx_ring->buffer_info[i]; - rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); - staterr = le32_to_cpu(rx_desc->wb.upper.status_error); - - while (staterr & E1000_RXD_STAT_DD) { - if (*work_done >= budget) - break; - (*work_done)++; - - skb = buffer_info->skb; - prefetch(skb->data - NET_IP_ALIGN); - buffer_info->skb = NULL; - - i++; - if (i == rx_ring->count) - i = 0; - next_rxd = E1000_RX_DESC_ADV(*rx_ring, i); - prefetch(next_rxd); - next_buffer = &rx_ring->buffer_info[i]; - - length = le16_to_cpu(rx_desc->wb.upper.length); - cleaned = true; - cleaned_count++; - - /* this is the fast path for the non-packet split case */ - if (!adapter->rx_ps_hdr_size) { - pci_unmap_single(pdev, buffer_info->dma, - adapter->rx_buffer_len, - PCI_DMA_FROMDEVICE); - buffer_info->dma = 0; - skb_put(skb, length); - goto send_up; - } - - /* HW will not DMA in data larger than the given buffer, even - * if it parses the (NFS, of course) header to be larger. In - * that case, it fills the header buffer and spills the rest - * into the page. - */ - hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) & - E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; - if (hlen > adapter->rx_ps_hdr_size) - hlen = adapter->rx_ps_hdr_size; - - if (!skb_shinfo(skb)->nr_frags) { - pci_unmap_single(pdev, buffer_info->dma, - adapter->rx_ps_hdr_size, - PCI_DMA_FROMDEVICE); - buffer_info->dma = 0; - skb_put(skb, hlen); - } - - if (length) { - pci_unmap_page(pdev, buffer_info->page_dma, - PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); - buffer_info->page_dma = 0; - - skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++, - buffer_info->page, - buffer_info->page_offset, - length); - - if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || - (page_count(buffer_info->page) != 1)) - buffer_info->page = NULL; - else - get_page(buffer_info->page); - - skb->len += length; - skb->data_len += length; - - skb->truesize += length; - } - - if (!(staterr & E1000_RXD_STAT_EOP)) { - buffer_info->skb = next_buffer->skb; - buffer_info->dma = next_buffer->dma; - next_buffer->skb = skb; - next_buffer->dma = 0; - goto next_desc; - } -send_up: - /* - * If this bit is set, then the RX registers contain - * the time stamp. No other packet will be time - * stamped until we read these registers, so read the - * registers to make them available again. Because - * only one packet can be time stamped at a time, we - * know that the register values must belong to this - * one here and therefore we don't need to compare - * any of the additional attributes stored for it. - * - * If nothing went wrong, then it should have a - * skb_shared_tx that we can turn into a - * skb_shared_hwtstamps. - * - * TODO: can time stamping be triggered (thus locking - * the registers) without the packet reaching this point - * here? In that case RX time stamping would get stuck. - * - * TODO: in "time stamp all packets" mode this bit is - * not set. Need a global flag for this mode and then - * always read the registers. Cannot be done without - * a race condition. - */ - if (unlikely(staterr & E1000_RXD_STAT_TS)) { - u64 regval; - u64 ns; - struct skb_shared_hwtstamps *shhwtstamps = - skb_hwtstamps(skb); - - WARN(!(rd32(E1000_TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID), - "igb: no RX time stamp available for time stamped packet"); - regval = rd32(E1000_RXSTMPL); - regval |= (u64)rd32(E1000_RXSTMPH) << 32; - ns = timecounter_cyc2time(&adapter->clock, regval); - timecompare_update(&adapter->compare, ns); - memset(shhwtstamps, 0, sizeof(*shhwtstamps)); - shhwtstamps->hwtstamp = ns_to_ktime(ns); - shhwtstamps->syststamp = - timecompare_transform(&adapter->compare, ns); - } - - if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { - dev_kfree_skb_irq(skb); - goto next_desc; - } - - total_bytes += skb->len; - total_packets++; - - igb_rx_checksum_adv(adapter, staterr, skb); - - skb->protocol = eth_type_trans(skb, netdev); - - igb_receive_skb(rx_ring, staterr, rx_desc, skb); - -next_desc: - rx_desc->wb.upper.status_error = 0; - - /* return some buffers to hardware, one at a time is too slow */ - if (cleaned_count >= IGB_RX_BUFFER_WRITE) { - igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); - cleaned_count = 0; - } - - /* use prefetched values */ - rx_desc = next_rxd; - buffer_info = next_buffer; - staterr = le32_to_cpu(rx_desc->wb.upper.status_error); - } - - rx_ring->next_to_clean = i; - cleaned_count = igb_desc_unused(rx_ring); - - if (cleaned_count) - igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); - - rx_ring->total_packets += total_packets; - rx_ring->total_bytes += total_bytes; - rx_ring->rx_stats.packets += total_packets; - rx_ring->rx_stats.bytes += total_bytes; - adapter->net_stats.rx_bytes += total_bytes; - adapter->net_stats.rx_packets += total_packets; - return cleaned; -} - -/** - * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split - * @adapter: address of board private structure - **/ -static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring, - int cleaned_count) -{ - struct igb_adapter *adapter = rx_ring->adapter; - struct net_device *netdev = adapter->netdev; - struct pci_dev *pdev = adapter->pdev; - union e1000_adv_rx_desc *rx_desc; - struct igb_buffer *buffer_info; - struct sk_buff *skb; - unsigned int i; - int bufsz; - - i = rx_ring->next_to_use; - buffer_info = &rx_ring->buffer_info[i]; - - if (adapter->rx_ps_hdr_size) - bufsz = adapter->rx_ps_hdr_size; - else - bufsz = adapter->rx_buffer_len; - - while (cleaned_count--) { - rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); - - if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { - if (!buffer_info->page) { - buffer_info->page = alloc_page(GFP_ATOMIC); - if (!buffer_info->page) { - adapter->alloc_rx_buff_failed++; - goto no_buffers; - } - buffer_info->page_offset = 0; - } else { - buffer_info->page_offset ^= PAGE_SIZE / 2; - } - buffer_info->page_dma = - pci_map_page(pdev, buffer_info->page, - buffer_info->page_offset, - PAGE_SIZE / 2, - PCI_DMA_FROMDEVICE); - } - - if (!buffer_info->skb) { - skb = netdev_alloc_skb(netdev, bufsz + NET_IP_ALIGN); - if (!skb) { - adapter->alloc_rx_buff_failed++; - goto no_buffers; - } - - /* Make buffer alignment 2 beyond a 16 byte boundary - * this will result in a 16 byte aligned IP header after - * the 14 byte MAC header is removed - */ - skb_reserve(skb, NET_IP_ALIGN); - - buffer_info->skb = skb; - buffer_info->dma = pci_map_single(pdev, skb->data, - bufsz, - PCI_DMA_FROMDEVICE); - } - /* Refresh the desc even if buffer_addrs didn't change because - * each write-back erases this info. */ - if (adapter->rx_ps_hdr_size) { - rx_desc->read.pkt_addr = - cpu_to_le64(buffer_info->page_dma); - rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); - } else { - rx_desc->read.pkt_addr = - cpu_to_le64(buffer_info->dma); - rx_desc->read.hdr_addr = 0; - } - - i++; - if (i == rx_ring->count) - i = 0; - buffer_info = &rx_ring->buffer_info[i]; - } - -no_buffers: - if (rx_ring->next_to_use != i) { - rx_ring->next_to_use = i; - if (i == 0) - i = (rx_ring->count - 1); - else - i--; - - /* Force memory writes to complete before letting h/w - * know there are new descriptors to fetch. (Only - * applicable for weak-ordered memory model archs, - * such as IA-64). */ - wmb(); - writel(i, adapter->hw.hw_addr + rx_ring->tail); - } -} - -/** - * igb_mii_ioctl - - * @netdev: - * @ifreq: - * @cmd: - **/ -static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct mii_ioctl_data *data = if_mii(ifr); - - if (adapter->hw.phy.media_type != e1000_media_type_copper) - return -EOPNOTSUPP; - - switch (cmd) { - case SIOCGMIIPHY: - data->phy_id = adapter->hw.phy.addr; - break; - case SIOCGMIIREG: - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, - &data->val_out)) - return -EIO; - break; - case SIOCSMIIREG: - default: - return -EOPNOTSUPP; - } - return 0; -} - -/** - * igb_hwtstamp_ioctl - control hardware time stamping - * @netdev: - * @ifreq: - * @cmd: - * - * Outgoing time stamping can be enabled and disabled. Play nice and - * disable it when requested, although it shouldn't case any overhead - * when no packet needs it. At most one packet in the queue may be - * marked for time stamping, otherwise it would be impossible to tell - * for sure to which packet the hardware time stamp belongs. - * - * Incoming time stamping has to be configured via the hardware - * filters. Not all combinations are supported, in particular event - * type has to be specified. Matching the kind of event packet is - * not supported, with the exception of "all V2 events regardless of - * level 2 or 4". - * - **/ -static int igb_hwtstamp_ioctl(struct net_device *netdev, - struct ifreq *ifr, int cmd) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - struct hwtstamp_config config; - u32 tsync_tx_ctl_bit = E1000_TSYNCTXCTL_ENABLED; - u32 tsync_rx_ctl_bit = E1000_TSYNCRXCTL_ENABLED; - u32 tsync_rx_ctl_type = 0; - u32 tsync_rx_cfg = 0; - int is_l4 = 0; - int is_l2 = 0; - short port = 319; /* PTP */ - u32 regval; - - if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) - return -EFAULT; - - /* reserved for future extensions */ - if (config.flags) - return -EINVAL; - - switch (config.tx_type) { - case HWTSTAMP_TX_OFF: - tsync_tx_ctl_bit = 0; - break; - case HWTSTAMP_TX_ON: - tsync_tx_ctl_bit = E1000_TSYNCTXCTL_ENABLED; - break; - default: - return -ERANGE; - } - - switch (config.rx_filter) { - case HWTSTAMP_FILTER_NONE: - tsync_rx_ctl_bit = 0; - break; - case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: - case HWTSTAMP_FILTER_ALL: - /* - * register TSYNCRXCFG must be set, therefore it is not - * possible to time stamp both Sync and Delay_Req messages - * => fall back to time stamping all packets - */ - tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_ALL; - config.rx_filter = HWTSTAMP_FILTER_ALL; - break; - case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: - tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L4_V1; - tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_SYNC_MESSAGE; - is_l4 = 1; - break; - case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: - tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L4_V1; - tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_DELAY_REQ_MESSAGE; - is_l4 = 1; - break; - case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: - case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: - tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L2_L4_V2; - tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_SYNC_MESSAGE; - is_l2 = 1; - is_l4 = 1; - config.rx_filter = HWTSTAMP_FILTER_SOME; - break; - case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: - case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: - tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L2_L4_V2; - tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_DELAY_REQ_MESSAGE; - is_l2 = 1; - is_l4 = 1; - config.rx_filter = HWTSTAMP_FILTER_SOME; - break; - case HWTSTAMP_FILTER_PTP_V2_EVENT: - case HWTSTAMP_FILTER_PTP_V2_SYNC: - case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: - tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_EVENT_V2; - config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; - is_l2 = 1; - break; - default: - return -ERANGE; - } - - /* enable/disable TX */ - regval = rd32(E1000_TSYNCTXCTL); - regval = (regval & ~E1000_TSYNCTXCTL_ENABLED) | tsync_tx_ctl_bit; - wr32(E1000_TSYNCTXCTL, regval); - - /* enable/disable RX, define which PTP packets are time stamped */ - regval = rd32(E1000_TSYNCRXCTL); - regval = (regval & ~E1000_TSYNCRXCTL_ENABLED) | tsync_rx_ctl_bit; - regval = (regval & ~0xE) | tsync_rx_ctl_type; - wr32(E1000_TSYNCRXCTL, regval); - wr32(E1000_TSYNCRXCFG, tsync_rx_cfg); - - /* - * Ethertype Filter Queue Filter[0][15:0] = 0x88F7 - * (Ethertype to filter on) - * Ethertype Filter Queue Filter[0][26] = 0x1 (Enable filter) - * Ethertype Filter Queue Filter[0][30] = 0x1 (Enable Timestamping) - */ - wr32(E1000_ETQF0, is_l2 ? 0x440088f7 : 0); - - /* L4 Queue Filter[0]: only filter by source and destination port */ - wr32(E1000_SPQF0, htons(port)); - wr32(E1000_IMIREXT(0), is_l4 ? - ((1<<12) | (1<<19) /* bypass size and control flags */) : 0); - wr32(E1000_IMIR(0), is_l4 ? - (htons(port) - | (0<<16) /* immediate interrupt disabled */ - | 0 /* (1<<17) bit cleared: do not bypass - destination port check */) - : 0); - wr32(E1000_FTQF0, is_l4 ? - (0x11 /* UDP */ - | (1<<15) /* VF not compared */ - | (1<<27) /* Enable Timestamping */ - | (7<<28) /* only source port filter enabled, - source/target address and protocol - masked */) - : ((1<<15) | (15<<28) /* all mask bits set = filter not - enabled */)); - - wrfl(); - - adapter->hwtstamp_config = config; - - /* clear TX/RX time stamp registers, just to be sure */ - regval = rd32(E1000_TXSTMPH); - regval = rd32(E1000_RXSTMPH); - - return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? - -EFAULT : 0; -} - -/** - * igb_ioctl - - * @netdev: - * @ifreq: - * @cmd: - **/ -static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) -{ - switch (cmd) { - case SIOCGMIIPHY: - case SIOCGMIIREG: - case SIOCSMIIREG: - return igb_mii_ioctl(netdev, ifr, cmd); - case SIOCSHWTSTAMP: - return igb_hwtstamp_ioctl(netdev, ifr, cmd); - default: - return -EOPNOTSUPP; - } -} - -static void igb_vlan_rx_register(struct net_device *netdev, - struct vlan_group *grp) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - u32 ctrl, rctl; - - igb_irq_disable(adapter); - adapter->vlgrp = grp; - - if (grp) { - /* enable VLAN tag insert/strip */ - ctrl = rd32(E1000_CTRL); - ctrl |= E1000_CTRL_VME; - wr32(E1000_CTRL, ctrl); - - /* enable VLAN receive filtering */ - rctl = rd32(E1000_RCTL); - rctl &= ~E1000_RCTL_CFIEN; - wr32(E1000_RCTL, rctl); - igb_update_mng_vlan(adapter); - } else { - /* disable VLAN tag insert/strip */ - ctrl = rd32(E1000_CTRL); - ctrl &= ~E1000_CTRL_VME; - wr32(E1000_CTRL, ctrl); - - if (adapter->mng_vlan_id != (u16)IGB_MNG_VLAN_NONE) { - igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); - adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; - } - } - - igb_rlpml_set(adapter); - - if (!test_bit(__IGB_DOWN, &adapter->state)) - igb_irq_enable(adapter); -} - -static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - int pf_id = adapter->vfs_allocated_count; - - if ((hw->mng_cookie.status & - E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && - (vid == adapter->mng_vlan_id)) - return; - - /* add vid to vlvf if sr-iov is enabled, - * if that fails add directly to filter table */ - if (igb_vlvf_set(adapter, vid, true, pf_id)) - igb_vfta_set(hw, vid, true); - -} - -static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - int pf_id = adapter->vfs_allocated_count; - - igb_irq_disable(adapter); - vlan_group_set_device(adapter->vlgrp, vid, NULL); - - if (!test_bit(__IGB_DOWN, &adapter->state)) - igb_irq_enable(adapter); - - if ((adapter->hw.mng_cookie.status & - E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && - (vid == adapter->mng_vlan_id)) { - /* release control to f/w */ - igb_release_hw_control(adapter); - return; - } - - /* remove vid from vlvf if sr-iov is enabled, - * if not in vlvf remove from vfta */ - if (igb_vlvf_set(adapter, vid, false, pf_id)) - igb_vfta_set(hw, vid, false); -} - -static void igb_restore_vlan(struct igb_adapter *adapter) -{ - igb_vlan_rx_register(adapter->netdev, adapter->vlgrp); - - if (adapter->vlgrp) { - u16 vid; - for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { - if (!vlan_group_get_device(adapter->vlgrp, vid)) - continue; - igb_vlan_rx_add_vid(adapter->netdev, vid); - } - } -} - -int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx) -{ - struct e1000_mac_info *mac = &adapter->hw.mac; - - mac->autoneg = 0; - - /* Fiber NICs only allow 1000 gbps Full duplex */ - if ((adapter->hw.phy.media_type == e1000_media_type_fiber) && - spddplx != (SPEED_1000 + DUPLEX_FULL)) { - dev_err(&adapter->pdev->dev, - "Unsupported Speed/Duplex configuration\n"); - return -EINVAL; - } - - switch (spddplx) { - case SPEED_10 + DUPLEX_HALF: - mac->forced_speed_duplex = ADVERTISE_10_HALF; - break; - case SPEED_10 + DUPLEX_FULL: - mac->forced_speed_duplex = ADVERTISE_10_FULL; - break; - case SPEED_100 + DUPLEX_HALF: - mac->forced_speed_duplex = ADVERTISE_100_HALF; - break; - case SPEED_100 + DUPLEX_FULL: - mac->forced_speed_duplex = ADVERTISE_100_FULL; - break; - case SPEED_1000 + DUPLEX_FULL: - mac->autoneg = 1; - adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; - break; - case SPEED_1000 + DUPLEX_HALF: /* not supported */ - default: - dev_err(&adapter->pdev->dev, - "Unsupported Speed/Duplex configuration\n"); - return -EINVAL; - } - return 0; -} - -static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - u32 ctrl, rctl, status; - u32 wufc = adapter->wol; -#ifdef CONFIG_PM - int retval = 0; -#endif - - netif_device_detach(netdev); - - if (netif_running(netdev)) - igb_close(netdev); - - igb_reset_interrupt_capability(adapter); - - igb_free_queues(adapter); - -#ifdef CONFIG_PM - retval = pci_save_state(pdev); - if (retval) - return retval; -#endif - - status = rd32(E1000_STATUS); - if (status & E1000_STATUS_LU) - wufc &= ~E1000_WUFC_LNKC; - - if (wufc) { - igb_setup_rctl(adapter); - igb_set_multi(netdev); - - /* turn on all-multi mode if wake on multicast is enabled */ - if (wufc & E1000_WUFC_MC) { - rctl = rd32(E1000_RCTL); - rctl |= E1000_RCTL_MPE; - wr32(E1000_RCTL, rctl); - } - - ctrl = rd32(E1000_CTRL); - /* advertise wake from D3Cold */ - #define E1000_CTRL_ADVD3WUC 0x00100000 - /* phy power management enable */ - #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 - ctrl |= E1000_CTRL_ADVD3WUC; - wr32(E1000_CTRL, ctrl); - - /* Allow time for pending master requests to run */ - igb_disable_pcie_master(&adapter->hw); - - wr32(E1000_WUC, E1000_WUC_PME_EN); - wr32(E1000_WUFC, wufc); - } else { - wr32(E1000_WUC, 0); - wr32(E1000_WUFC, 0); - } - - *enable_wake = wufc || adapter->en_mng_pt; - if (!*enable_wake) - igb_shutdown_fiber_serdes_link_82575(hw); - - /* Release control of h/w to f/w. If f/w is AMT enabled, this - * would have already happened in close and is redundant. */ - igb_release_hw_control(adapter); - - pci_disable_device(pdev); - - return 0; -} - -#ifdef CONFIG_PM -static int igb_suspend(struct pci_dev *pdev, pm_message_t state) -{ - int retval; - bool wake; - - retval = __igb_shutdown(pdev, &wake); - if (retval) - return retval; - - if (wake) { - pci_prepare_to_sleep(pdev); - } else { - pci_wake_from_d3(pdev, false); - pci_set_power_state(pdev, PCI_D3hot); - } - - return 0; -} - -static int igb_resume(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - u32 err; - - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - - err = pci_enable_device_mem(pdev); - if (err) { - dev_err(&pdev->dev, - "igb: Cannot enable PCI device from suspend\n"); - return err; - } - pci_set_master(pdev); - - pci_enable_wake(pdev, PCI_D3hot, 0); - pci_enable_wake(pdev, PCI_D3cold, 0); - - igb_set_interrupt_capability(adapter); - - if (igb_alloc_queues(adapter)) { - dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); - return -ENOMEM; - } - - /* e1000_power_up_phy(adapter); */ - - igb_reset(adapter); - - /* let the f/w know that the h/w is now under the control of the - * driver. */ - igb_get_hw_control(adapter); - - wr32(E1000_WUS, ~0); - - if (netif_running(netdev)) { - err = igb_open(netdev); - if (err) - return err; - } - - netif_device_attach(netdev); - - return 0; -} -#endif - -static void igb_shutdown(struct pci_dev *pdev) -{ - bool wake; - - __igb_shutdown(pdev, &wake); - - if (system_state == SYSTEM_POWER_OFF) { - pci_wake_from_d3(pdev, wake); - pci_set_power_state(pdev, PCI_D3hot); - } -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -/* - * Polling 'interrupt' - used by things like netconsole to send skbs - * without having to re-enable interrupts. It's not called while - * the interrupt routine is executing. - */ -static void igb_netpoll(struct net_device *netdev) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - int i; - - if (!adapter->msix_entries) { - igb_irq_disable(adapter); - napi_schedule(&adapter->rx_ring[0].napi); - return; - } - - for (i = 0; i < adapter->num_tx_queues; i++) { - struct igb_ring *tx_ring = &adapter->tx_ring[i]; - wr32(E1000_EIMC, tx_ring->eims_value); - igb_clean_tx_irq(tx_ring); - wr32(E1000_EIMS, tx_ring->eims_value); - } - - for (i = 0; i < adapter->num_rx_queues; i++) { - struct igb_ring *rx_ring = &adapter->rx_ring[i]; - wr32(E1000_EIMC, rx_ring->eims_value); - napi_schedule(&rx_ring->napi); - } -} -#endif /* CONFIG_NET_POLL_CONTROLLER */ - -/** - * igb_io_error_detected - called when PCI error is detected - * @pdev: Pointer to PCI device - * @state: The current pci connection state - * - * This function is called after a PCI bus error affecting - * this device has been detected. - */ -static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, - pci_channel_state_t state) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct igb_adapter *adapter = netdev_priv(netdev); - - netif_device_detach(netdev); - - if (state == pci_channel_io_perm_failure) - return PCI_ERS_RESULT_DISCONNECT; - - if (netif_running(netdev)) - igb_down(adapter); - pci_disable_device(pdev); - - /* Request a slot slot reset. */ - return PCI_ERS_RESULT_NEED_RESET; -} - -/** - * igb_io_slot_reset - called after the pci bus has been reset. - * @pdev: Pointer to PCI device - * - * Restart the card from scratch, as if from a cold-boot. Implementation - * resembles the first-half of the igb_resume routine. - */ -static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - pci_ers_result_t result; - int err; - - if (pci_enable_device_mem(pdev)) { - dev_err(&pdev->dev, - "Cannot re-enable PCI device after reset.\n"); - result = PCI_ERS_RESULT_DISCONNECT; - } else { - pci_set_master(pdev); - pci_restore_state(pdev); - - pci_enable_wake(pdev, PCI_D3hot, 0); - pci_enable_wake(pdev, PCI_D3cold, 0); - - igb_reset(adapter); - wr32(E1000_WUS, ~0); - result = PCI_ERS_RESULT_RECOVERED; - } - - err = pci_cleanup_aer_uncorrect_error_status(pdev); - if (err) { - dev_err(&pdev->dev, "pci_cleanup_aer_uncorrect_error_status " - "failed 0x%0x\n", err); - /* non-fatal, continue */ - } - - return result; -} - -/** - * igb_io_resume - called when traffic can start flowing again. - * @pdev: Pointer to PCI device - * - * This callback is called when the error recovery driver tells us that - * its OK to resume normal operation. Implementation resembles the - * second-half of the igb_resume routine. - */ -static void igb_io_resume(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct igb_adapter *adapter = netdev_priv(netdev); - - if (netif_running(netdev)) { - if (igb_up(adapter)) { - dev_err(&pdev->dev, "igb_up failed after reset\n"); - return; - } - } - - netif_device_attach(netdev); - - /* let the f/w know that the h/w is now under the control of the - * driver. */ - igb_get_hw_control(adapter); -} - -static inline void igb_set_vmolr(struct e1000_hw *hw, int vfn) -{ - u32 reg_data; - - reg_data = rd32(E1000_VMOLR(vfn)); - reg_data |= E1000_VMOLR_BAM | /* Accept broadcast */ - E1000_VMOLR_ROPE | /* Accept packets matched in UTA */ - E1000_VMOLR_ROMPE | /* Accept packets matched in MTA */ - E1000_VMOLR_AUPE | /* Accept untagged packets */ - E1000_VMOLR_STRVLAN; /* Strip vlan tags */ - wr32(E1000_VMOLR(vfn), reg_data); -} - -static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, - int vfn) -{ - struct e1000_hw *hw = &adapter->hw; - u32 vmolr; - - vmolr = rd32(E1000_VMOLR(vfn)); - vmolr &= ~E1000_VMOLR_RLPML_MASK; - vmolr |= size | E1000_VMOLR_LPE; - wr32(E1000_VMOLR(vfn), vmolr); - - return 0; -} - -static inline void igb_set_rah_pool(struct e1000_hw *hw, int pool, int entry) -{ - u32 reg_data; - - reg_data = rd32(E1000_RAH(entry)); - reg_data &= ~E1000_RAH_POOL_MASK; - reg_data |= E1000_RAH_POOL_1 << pool;; - wr32(E1000_RAH(entry), reg_data); -} - -static void igb_set_mc_list_pools(struct igb_adapter *adapter, - int entry_count, u16 total_rar_filters) -{ - struct e1000_hw *hw = &adapter->hw; - int i = adapter->vfs_allocated_count + 1; - - if ((i + entry_count) < total_rar_filters) - total_rar_filters = i + entry_count; - - for (; i < total_rar_filters; i++) - igb_set_rah_pool(hw, adapter->vfs_allocated_count, i); -} - -static int igb_set_vf_mac(struct igb_adapter *adapter, - int vf, unsigned char *mac_addr) -{ - struct e1000_hw *hw = &adapter->hw; - int rar_entry = vf + 1; /* VF MAC addresses start at entry 1 */ - - igb_rar_set(hw, mac_addr, rar_entry); - - memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN); - - igb_set_rah_pool(hw, vf, rar_entry); - - return 0; -} - -static void igb_vmm_control(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - u32 reg_data; - - if (!adapter->vfs_allocated_count) - return; - - /* VF's need PF reset indication before they - * can send/receive mail */ - reg_data = rd32(E1000_CTRL_EXT); - reg_data |= E1000_CTRL_EXT_PFRSTD; - wr32(E1000_CTRL_EXT, reg_data); - - igb_vmdq_set_loopback_pf(hw, true); - igb_vmdq_set_replication_pf(hw, true); -} - -/* igb_main.c */ |