diff options
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_main.c')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_main.c | 7936 |
1 files changed, 0 insertions, 7936 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c deleted file mode 100644 index 22790394318a..000000000000 --- a/drivers/net/ixgbe/ixgbe_main.c +++ /dev/null @@ -1,7936 +0,0 @@ -/******************************************************************************* - - Intel 10 Gigabit PCI Express Linux driver - Copyright(c) 1999 - 2011 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/types.h> -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/netdevice.h> -#include <linux/vmalloc.h> -#include <linux/string.h> -#include <linux/in.h> -#include <linux/interrupt.h> -#include <linux/ip.h> -#include <linux/tcp.h> -#include <linux/sctp.h> -#include <linux/pkt_sched.h> -#include <linux/ipv6.h> -#include <linux/slab.h> -#include <net/checksum.h> -#include <net/ip6_checksum.h> -#include <linux/ethtool.h> -#include <linux/if_vlan.h> -#include <linux/prefetch.h> -#include <scsi/fc/fc_fcoe.h> - -#include "ixgbe.h" -#include "ixgbe_common.h" -#include "ixgbe_dcb_82599.h" -#include "ixgbe_sriov.h" - -char ixgbe_driver_name[] = "ixgbe"; -static const char ixgbe_driver_string[] = - "Intel(R) 10 Gigabit PCI Express Network Driver"; -#define MAJ 3 -#define MIN 4 -#define BUILD 8 -#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \ - __stringify(BUILD) "-k" -const char ixgbe_driver_version[] = DRV_VERSION; -static const char ixgbe_copyright[] = - "Copyright (c) 1999-2011 Intel Corporation."; - -static const struct ixgbe_info *ixgbe_info_tbl[] = { - [board_82598] = &ixgbe_82598_info, - [board_82599] = &ixgbe_82599_info, - [board_X540] = &ixgbe_X540_info, -}; - -/* ixgbe_pci_tbl - PCI Device ID Table - * - * Wildcard entries (PCI_ANY_ID) should come last - * Last entry must be all 0s - * - * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, - * Class, Class Mask, private data (not used) } - */ -static DEFINE_PCI_DEVICE_TABLE(ixgbe_pci_tbl) = { - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), - board_82598 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), - board_X540 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), - board_82599 }, - {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), - board_82599 }, - - /* required last entry */ - {0, } -}; -MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); - -#ifdef CONFIG_IXGBE_DCA -static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, - void *p); -static struct notifier_block dca_notifier = { - .notifier_call = ixgbe_notify_dca, - .next = NULL, - .priority = 0 -}; -#endif - -#ifdef CONFIG_PCI_IOV -static unsigned int max_vfs; -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 */ - -MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); -MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); - -#define DEFAULT_DEBUG_LEVEL_SHIFT 3 - -static inline void ixgbe_disable_sriov(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 gcr; - u32 gpie; - u32 vmdctl; - -#ifdef CONFIG_PCI_IOV - /* disable iov and allow time for transactions to clear */ - pci_disable_sriov(adapter->pdev); -#endif - - /* turn off device IOV mode */ - gcr = IXGBE_READ_REG(hw, IXGBE_GCR_EXT); - gcr &= ~(IXGBE_GCR_EXT_SRIOV); - IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr); - gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); - gpie &= ~IXGBE_GPIE_VTMODE_MASK; - IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); - - /* set default pool back to 0 */ - vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); - vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; - IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); - IXGBE_WRITE_FLUSH(hw); - - /* take a breather then clean up driver data */ - msleep(100); - - kfree(adapter->vfinfo); - adapter->vfinfo = NULL; - - adapter->num_vfs = 0; - adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; -} - -static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter) -{ - if (!test_bit(__IXGBE_DOWN, &adapter->state) && - !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state)) - schedule_work(&adapter->service_task); -} - -static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter) -{ - BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state)); - - /* flush memory to make sure state is correct before next watchog */ - smp_mb__before_clear_bit(); - clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); -} - -struct ixgbe_reg_info { - u32 ofs; - char *name; -}; - -static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = { - - /* General Registers */ - {IXGBE_CTRL, "CTRL"}, - {IXGBE_STATUS, "STATUS"}, - {IXGBE_CTRL_EXT, "CTRL_EXT"}, - - /* Interrupt Registers */ - {IXGBE_EICR, "EICR"}, - - /* RX Registers */ - {IXGBE_SRRCTL(0), "SRRCTL"}, - {IXGBE_DCA_RXCTRL(0), "DRXCTL"}, - {IXGBE_RDLEN(0), "RDLEN"}, - {IXGBE_RDH(0), "RDH"}, - {IXGBE_RDT(0), "RDT"}, - {IXGBE_RXDCTL(0), "RXDCTL"}, - {IXGBE_RDBAL(0), "RDBAL"}, - {IXGBE_RDBAH(0), "RDBAH"}, - - /* TX Registers */ - {IXGBE_TDBAL(0), "TDBAL"}, - {IXGBE_TDBAH(0), "TDBAH"}, - {IXGBE_TDLEN(0), "TDLEN"}, - {IXGBE_TDH(0), "TDH"}, - {IXGBE_TDT(0), "TDT"}, - {IXGBE_TXDCTL(0), "TXDCTL"}, - - /* List Terminator */ - {} -}; - - -/* - * ixgbe_regdump - register printout routine - */ -static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo) -{ - int i = 0, j = 0; - char rname[16]; - u32 regs[64]; - - switch (reginfo->ofs) { - case IXGBE_SRRCTL(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i)); - break; - case IXGBE_DCA_RXCTRL(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); - break; - case IXGBE_RDLEN(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i)); - break; - case IXGBE_RDH(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i)); - break; - case IXGBE_RDT(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i)); - break; - case IXGBE_RXDCTL(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); - break; - case IXGBE_RDBAL(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i)); - break; - case IXGBE_RDBAH(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i)); - break; - case IXGBE_TDBAL(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i)); - break; - case IXGBE_TDBAH(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i)); - break; - case IXGBE_TDLEN(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i)); - break; - case IXGBE_TDH(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i)); - break; - case IXGBE_TDT(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i)); - break; - case IXGBE_TXDCTL(0): - for (i = 0; i < 64; i++) - regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i)); - break; - default: - pr_info("%-15s %08x\n", reginfo->name, - IXGBE_READ_REG(hw, reginfo->ofs)); - return; - } - - for (i = 0; i < 8; i++) { - snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i*8, i*8+7); - pr_err("%-15s", rname); - for (j = 0; j < 8; j++) - pr_cont(" %08x", regs[i*8+j]); - pr_cont("\n"); - } - -} - -/* - * ixgbe_dump - Print registers, tx-rings and rx-rings - */ -static void ixgbe_dump(struct ixgbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct ixgbe_hw *hw = &adapter->hw; - struct ixgbe_reg_info *reginfo; - int n = 0; - struct ixgbe_ring *tx_ring; - struct ixgbe_tx_buffer *tx_buffer_info; - union ixgbe_adv_tx_desc *tx_desc; - struct my_u0 { u64 a; u64 b; } *u0; - struct ixgbe_ring *rx_ring; - union ixgbe_adv_rx_desc *rx_desc; - struct ixgbe_rx_buffer *rx_buffer_info; - u32 staterr; - int i = 0; - - if (!netif_msg_hw(adapter)) - return; - - /* Print netdevice Info */ - if (netdev) { - dev_info(&adapter->pdev->dev, "Net device Info\n"); - pr_info("Device Name state " - "trans_start last_rx\n"); - pr_info("%-15s %016lX %016lX %016lX\n", - netdev->name, - netdev->state, - netdev->trans_start, - netdev->last_rx); - } - - /* Print Registers */ - dev_info(&adapter->pdev->dev, "Register Dump\n"); - pr_info(" Register Name Value\n"); - for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl; - reginfo->name; reginfo++) { - ixgbe_regdump(hw, reginfo); - } - - /* Print TX Ring Summary */ - if (!netdev || !netif_running(netdev)) - goto exit; - - dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); - pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); - for (n = 0; n < adapter->num_tx_queues; n++) { - tx_ring = adapter->tx_ring[n]; - tx_buffer_info = - &tx_ring->tx_buffer_info[tx_ring->next_to_clean]; - pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n", - n, tx_ring->next_to_use, tx_ring->next_to_clean, - (u64)tx_buffer_info->dma, - tx_buffer_info->length, - tx_buffer_info->next_to_watch, - (u64)tx_buffer_info->time_stamp); - } - - /* Print TX Rings */ - if (!netif_msg_tx_done(adapter)) - goto rx_ring_summary; - - dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); - - /* Transmit Descriptor Formats - * - * Advanced Transmit Descriptor - * +--------------------------------------------------------------+ - * 0 | Buffer Address [63:0] | - * +--------------------------------------------------------------+ - * 8 | PAYLEN | PORTS | IDX | STA | DCMD |DTYP | RSV | DTALEN | - * +--------------------------------------------------------------+ - * 63 46 45 40 39 36 35 32 31 24 23 20 19 0 - */ - - for (n = 0; n < adapter->num_tx_queues; n++) { - tx_ring = adapter->tx_ring[n]; - pr_info("------------------------------------\n"); - pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index); - pr_info("------------------------------------\n"); - pr_info("T [desc] [address 63:0 ] " - "[PlPOIdStDDt Ln] [bi->dma ] " - "leng ntw timestamp bi->skb\n"); - - for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { - tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i); - tx_buffer_info = &tx_ring->tx_buffer_info[i]; - u0 = (struct my_u0 *)tx_desc; - pr_info("T [0x%03X] %016llX %016llX %016llX" - " %04X %3X %016llX %p", i, - le64_to_cpu(u0->a), - le64_to_cpu(u0->b), - (u64)tx_buffer_info->dma, - tx_buffer_info->length, - tx_buffer_info->next_to_watch, - (u64)tx_buffer_info->time_stamp, - tx_buffer_info->skb); - if (i == tx_ring->next_to_use && - i == tx_ring->next_to_clean) - pr_cont(" NTC/U\n"); - else if (i == tx_ring->next_to_use) - pr_cont(" NTU\n"); - else if (i == tx_ring->next_to_clean) - pr_cont(" NTC\n"); - else - pr_cont("\n"); - - if (netif_msg_pktdata(adapter) && - tx_buffer_info->dma != 0) - print_hex_dump(KERN_INFO, "", - DUMP_PREFIX_ADDRESS, 16, 1, - phys_to_virt(tx_buffer_info->dma), - tx_buffer_info->length, true); - } - } - - /* Print RX Rings Summary */ -rx_ring_summary: - dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); - pr_info("Queue [NTU] [NTC]\n"); - for (n = 0; n < adapter->num_rx_queues; n++) { - rx_ring = adapter->rx_ring[n]; - pr_info("%5d %5X %5X\n", - n, rx_ring->next_to_use, rx_ring->next_to_clean); - } - - /* Print RX Rings */ - if (!netif_msg_rx_status(adapter)) - goto exit; - - dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); - - /* Advanced Receive Descriptor (Read) Format - * 63 1 0 - * +-----------------------------------------------------+ - * 0 | Packet Buffer Address [63:1] |A0/NSE| - * +----------------------------------------------+------+ - * 8 | Header Buffer Address [63:1] | DD | - * +-----------------------------------------------------+ - * - * - * Advanced Receive Descriptor (Write-Back) Format - * - * 63 48 47 32 31 30 21 20 16 15 4 3 0 - * +------------------------------------------------------+ - * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS | - * | Checksum Ident | | | | Type | Type | - * +------------------------------------------------------+ - * 8 | VLAN Tag | Length | Extended Error | Extended Status | - * +------------------------------------------------------+ - * 63 48 47 32 31 20 19 0 - */ - for (n = 0; n < adapter->num_rx_queues; n++) { - rx_ring = adapter->rx_ring[n]; - pr_info("------------------------------------\n"); - pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index); - pr_info("------------------------------------\n"); - pr_info("R [desc] [ PktBuf A0] " - "[ HeadBuf DD] [bi->dma ] [bi->skb] " - "<-- Adv Rx Read format\n"); - pr_info("RWB[desc] [PcsmIpSHl PtRs] " - "[vl er S cks ln] ---------------- [bi->skb] " - "<-- Adv Rx Write-Back format\n"); - - for (i = 0; i < rx_ring->count; i++) { - rx_buffer_info = &rx_ring->rx_buffer_info[i]; - rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i); - u0 = (struct my_u0 *)rx_desc; - staterr = le32_to_cpu(rx_desc->wb.upper.status_error); - if (staterr & IXGBE_RXD_STAT_DD) { - /* Descriptor Done */ - pr_info("RWB[0x%03X] %016llX " - "%016llX ---------------- %p", i, - le64_to_cpu(u0->a), - le64_to_cpu(u0->b), - rx_buffer_info->skb); - } else { - pr_info("R [0x%03X] %016llX " - "%016llX %016llX %p", i, - le64_to_cpu(u0->a), - le64_to_cpu(u0->b), - (u64)rx_buffer_info->dma, - rx_buffer_info->skb); - - if (netif_msg_pktdata(adapter)) { - print_hex_dump(KERN_INFO, "", - DUMP_PREFIX_ADDRESS, 16, 1, - phys_to_virt(rx_buffer_info->dma), - rx_ring->rx_buf_len, true); - - if (rx_ring->rx_buf_len - < IXGBE_RXBUFFER_2048) - print_hex_dump(KERN_INFO, "", - DUMP_PREFIX_ADDRESS, 16, 1, - phys_to_virt( - rx_buffer_info->page_dma + - rx_buffer_info->page_offset - ), - PAGE_SIZE/2, true); - } - } - - if (i == rx_ring->next_to_use) - pr_cont(" NTU\n"); - else if (i == rx_ring->next_to_clean) - pr_cont(" NTC\n"); - else - pr_cont("\n"); - - } - } - -exit: - return; -} - -static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) -{ - u32 ctrl_ext; - - /* Let firmware take over control of h/w */ - ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, - ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); -} - -static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) -{ - u32 ctrl_ext; - - /* Let firmware know the driver has taken over */ - ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, - ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); -} - -/* - * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors - * @adapter: pointer to adapter struct - * @direction: 0 for Rx, 1 for Tx, -1 for other causes - * @queue: queue to map the corresponding interrupt to - * @msix_vector: the vector to map to the corresponding queue - * - */ -static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction, - u8 queue, u8 msix_vector) -{ - u32 ivar, index; - struct ixgbe_hw *hw = &adapter->hw; - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - msix_vector |= IXGBE_IVAR_ALLOC_VAL; - if (direction == -1) - direction = 0; - index = (((direction * 64) + queue) >> 2) & 0x1F; - ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index)); - ivar &= ~(0xFF << (8 * (queue & 0x3))); - ivar |= (msix_vector << (8 * (queue & 0x3))); - IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - if (direction == -1) { - /* other causes */ - msix_vector |= IXGBE_IVAR_ALLOC_VAL; - index = ((queue & 1) * 8); - ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC); - ivar &= ~(0xFF << index); - ivar |= (msix_vector << index); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar); - break; - } else { - /* tx or rx causes */ - msix_vector |= IXGBE_IVAR_ALLOC_VAL; - index = ((16 * (queue & 1)) + (8 * direction)); - ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1)); - ivar &= ~(0xFF << index); - ivar |= (msix_vector << index); - IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar); - break; - } - default: - break; - } -} - -static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter, - u64 qmask) -{ - u32 mask; - - switch (adapter->hw.mac.type) { - case ixgbe_mac_82598EB: - mask = (IXGBE_EIMS_RTX_QUEUE & qmask); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - mask = (qmask & 0xFFFFFFFF); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask); - mask = (qmask >> 32); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask); - break; - default: - break; - } -} - -void ixgbe_unmap_and_free_tx_resource(struct ixgbe_ring *tx_ring, - struct ixgbe_tx_buffer *tx_buffer_info) -{ - if (tx_buffer_info->dma) { - if (tx_buffer_info->mapped_as_page) - dma_unmap_page(tx_ring->dev, - tx_buffer_info->dma, - tx_buffer_info->length, - DMA_TO_DEVICE); - else - dma_unmap_single(tx_ring->dev, - tx_buffer_info->dma, - tx_buffer_info->length, - DMA_TO_DEVICE); - tx_buffer_info->dma = 0; - } - if (tx_buffer_info->skb) { - dev_kfree_skb_any(tx_buffer_info->skb); - tx_buffer_info->skb = NULL; - } - tx_buffer_info->time_stamp = 0; - /* tx_buffer_info must be completely set up in the transmit path */ -} - -static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - struct ixgbe_hw_stats *hwstats = &adapter->stats; - u32 data = 0; - u32 xoff[8] = {0}; - int i; - - if ((hw->fc.current_mode == ixgbe_fc_full) || - (hw->fc.current_mode == ixgbe_fc_rx_pause)) { - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); - break; - default: - data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); - } - hwstats->lxoffrxc += data; - - /* refill credits (no tx hang) if we received xoff */ - if (!data) - return; - - for (i = 0; i < adapter->num_tx_queues; i++) - clear_bit(__IXGBE_HANG_CHECK_ARMED, - &adapter->tx_ring[i]->state); - return; - } else if (!(adapter->dcb_cfg.pfc_mode_enable)) - return; - - /* update stats for each tc, only valid with PFC enabled */ - for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) { - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - xoff[i] = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); - break; - default: - xoff[i] = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); - } - hwstats->pxoffrxc[i] += xoff[i]; - } - - /* disarm tx queues that have received xoff frames */ - for (i = 0; i < adapter->num_tx_queues; i++) { - struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; - u8 tc = tx_ring->dcb_tc; - - if (xoff[tc]) - clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); - } -} - -static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring) -{ - return ring->tx_stats.completed; -} - -static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring) -{ - struct ixgbe_adapter *adapter = netdev_priv(ring->netdev); - struct ixgbe_hw *hw = &adapter->hw; - - u32 head = IXGBE_READ_REG(hw, IXGBE_TDH(ring->reg_idx)); - u32 tail = IXGBE_READ_REG(hw, IXGBE_TDT(ring->reg_idx)); - - if (head != tail) - return (head < tail) ? - tail - head : (tail + ring->count - head); - - return 0; -} - -static inline bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring) -{ - u32 tx_done = ixgbe_get_tx_completed(tx_ring); - u32 tx_done_old = tx_ring->tx_stats.tx_done_old; - u32 tx_pending = ixgbe_get_tx_pending(tx_ring); - bool ret = false; - - clear_check_for_tx_hang(tx_ring); - - /* - * Check for a hung queue, but be thorough. This verifies - * that a transmit has been completed since the previous - * check AND there is at least one packet pending. The - * ARMED bit is set to indicate a potential hang. The - * bit is cleared if a pause frame is received to remove - * false hang detection due to PFC or 802.3x frames. By - * requiring this to fail twice we avoid races with - * pfc clearing the ARMED bit and conditions where we - * run the check_tx_hang logic with a transmit completion - * pending but without time to complete it yet. - */ - if ((tx_done_old == tx_done) && tx_pending) { - /* make sure it is true for two checks in a row */ - ret = test_and_set_bit(__IXGBE_HANG_CHECK_ARMED, - &tx_ring->state); - } else { - /* update completed stats and continue */ - tx_ring->tx_stats.tx_done_old = tx_done; - /* reset the countdown */ - clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); - } - - return ret; -} - -/** - * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout - * @adapter: driver private struct - **/ -static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter) -{ - - /* Do the reset outside of interrupt context */ - if (!test_bit(__IXGBE_DOWN, &adapter->state)) { - adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED; - ixgbe_service_event_schedule(adapter); - } -} - -/** - * ixgbe_clean_tx_irq - Reclaim resources after transmit completes - * @q_vector: structure containing interrupt and ring information - * @tx_ring: tx ring to clean - **/ -static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector, - struct ixgbe_ring *tx_ring) -{ - struct ixgbe_adapter *adapter = q_vector->adapter; - union ixgbe_adv_tx_desc *tx_desc, *eop_desc; - struct ixgbe_tx_buffer *tx_buffer_info; - unsigned int total_bytes = 0, total_packets = 0; - u16 i, eop, count = 0; - - i = tx_ring->next_to_clean; - eop = tx_ring->tx_buffer_info[i].next_to_watch; - eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop); - - while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) && - (count < q_vector->tx.work_limit)) { - bool cleaned = false; - rmb(); /* read buffer_info after eop_desc */ - for ( ; !cleaned; count++) { - tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i); - tx_buffer_info = &tx_ring->tx_buffer_info[i]; - - tx_desc->wb.status = 0; - cleaned = (i == eop); - - i++; - if (i == tx_ring->count) - i = 0; - - if (cleaned && tx_buffer_info->skb) { - total_bytes += tx_buffer_info->bytecount; - total_packets += tx_buffer_info->gso_segs; - } - - ixgbe_unmap_and_free_tx_resource(tx_ring, - tx_buffer_info); - } - - tx_ring->tx_stats.completed++; - eop = tx_ring->tx_buffer_info[i].next_to_watch; - eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop); - } - - tx_ring->next_to_clean = i; - tx_ring->stats.bytes += total_bytes; - tx_ring->stats.packets += total_packets; - u64_stats_update_begin(&tx_ring->syncp); - q_vector->tx.total_bytes += total_bytes; - q_vector->tx.total_packets += total_packets; - u64_stats_update_end(&tx_ring->syncp); - - if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) { - /* schedule immediate reset if we believe we hung */ - struct ixgbe_hw *hw = &adapter->hw; - tx_desc = IXGBE_TX_DESC_ADV(tx_ring, eop); - e_err(drv, "Detected Tx Unit Hang\n" - " Tx Queue <%d>\n" - " TDH, TDT <%x>, <%x>\n" - " next_to_use <%x>\n" - " next_to_clean <%x>\n" - "tx_buffer_info[next_to_clean]\n" - " time_stamp <%lx>\n" - " jiffies <%lx>\n", - tx_ring->queue_index, - IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)), - IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)), - tx_ring->next_to_use, eop, - tx_ring->tx_buffer_info[eop].time_stamp, jiffies); - - netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index); - - e_info(probe, - "tx hang %d detected on queue %d, resetting adapter\n", - adapter->tx_timeout_count + 1, tx_ring->queue_index); - - /* schedule immediate reset if we believe we hung */ - ixgbe_tx_timeout_reset(adapter); - - /* the adapter is about to reset, no point in enabling stuff */ - return true; - } - -#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) - if (unlikely(count && netif_carrier_ok(tx_ring->netdev) && - (ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) { - /* Make sure that anybody stopping the queue after this - * sees the new next_to_clean. - */ - smp_mb(); - if (__netif_subqueue_stopped(tx_ring->netdev, tx_ring->queue_index) && - !test_bit(__IXGBE_DOWN, &adapter->state)) { - netif_wake_subqueue(tx_ring->netdev, tx_ring->queue_index); - ++tx_ring->tx_stats.restart_queue; - } - } - - return count < q_vector->tx.work_limit; -} - -#ifdef CONFIG_IXGBE_DCA -static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, - struct ixgbe_ring *rx_ring, - int cpu) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 rxctrl; - u8 reg_idx = rx_ring->reg_idx; - - rxctrl = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(reg_idx)); - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK; - rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599; - rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) << - IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599); - break; - default: - break; - } - rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN; - rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN; - rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN); - IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl); -} - -static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, - struct ixgbe_ring *tx_ring, - int cpu) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 txctrl; - u8 reg_idx = tx_ring->reg_idx; - - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(reg_idx)); - txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK; - txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); - txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN; - IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(reg_idx), txctrl); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(reg_idx)); - txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599; - txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) << - IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599); - txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN; - IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(reg_idx), txctrl); - break; - default: - break; - } -} - -static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector) -{ - struct ixgbe_adapter *adapter = q_vector->adapter; - int cpu = get_cpu(); - long r_idx; - int i; - - if (q_vector->cpu == cpu) - goto out_no_update; - - r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues); - for (i = 0; i < q_vector->tx.count; i++) { - ixgbe_update_tx_dca(adapter, adapter->tx_ring[r_idx], cpu); - r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues, - r_idx + 1); - } - - r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues); - for (i = 0; i < q_vector->rx.count; i++) { - ixgbe_update_rx_dca(adapter, adapter->rx_ring[r_idx], cpu); - r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues, - r_idx + 1); - } - - q_vector->cpu = cpu; -out_no_update: - put_cpu(); -} - -static void ixgbe_setup_dca(struct ixgbe_adapter *adapter) -{ - int num_q_vectors; - int i; - - if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED)) - return; - - /* always use CB2 mode, difference is masked in the CB driver */ - IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2); - - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) - num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - else - num_q_vectors = 1; - - for (i = 0; i < num_q_vectors; i++) { - adapter->q_vector[i]->cpu = -1; - ixgbe_update_dca(adapter->q_vector[i]); - } -} - -static int __ixgbe_notify_dca(struct device *dev, void *data) -{ - struct ixgbe_adapter *adapter = dev_get_drvdata(dev); - unsigned long event = *(unsigned long *)data; - - if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE)) - return 0; - - switch (event) { - case DCA_PROVIDER_ADD: - /* if we're already enabled, don't do it again */ - if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) - break; - if (dca_add_requester(dev) == 0) { - adapter->flags |= IXGBE_FLAG_DCA_ENABLED; - ixgbe_setup_dca(adapter); - break; - } - /* Fall Through since DCA is disabled. */ - case DCA_PROVIDER_REMOVE: - if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { - dca_remove_requester(dev); - adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; - IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1); - } - break; - } - - return 0; -} -#endif /* CONFIG_IXGBE_DCA */ - -static inline void ixgbe_rx_hash(union ixgbe_adv_rx_desc *rx_desc, - struct sk_buff *skb) -{ - skb->rxhash = le32_to_cpu(rx_desc->wb.lower.hi_dword.rss); -} - -/** - * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type - * @adapter: address of board private structure - * @rx_desc: advanced rx descriptor - * - * Returns : true if it is FCoE pkt - */ -static inline bool ixgbe_rx_is_fcoe(struct ixgbe_adapter *adapter, - union ixgbe_adv_rx_desc *rx_desc) -{ - __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; - - return (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) && - ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) == - (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE << - IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT))); -} - -/** - * ixgbe_receive_skb - Send a completed packet up the stack - * @adapter: board private structure - * @skb: packet to send up - * @status: hardware indication of status of receive - * @rx_ring: rx descriptor ring (for a specific queue) to setup - * @rx_desc: rx descriptor - **/ -static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector, - struct sk_buff *skb, u8 status, - struct ixgbe_ring *ring, - union ixgbe_adv_rx_desc *rx_desc) -{ - struct ixgbe_adapter *adapter = q_vector->adapter; - struct napi_struct *napi = &q_vector->napi; - bool is_vlan = (status & IXGBE_RXD_STAT_VP); - u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan); - - if (is_vlan && (tag & VLAN_VID_MASK)) - __vlan_hwaccel_put_tag(skb, tag); - - if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) - napi_gro_receive(napi, skb); - else - netif_rx(skb); -} - -/** - * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum - * @adapter: address of board private structure - * @status_err: hardware indication of status of receive - * @skb: skb currently being received and modified - * @status_err: status error value of last descriptor in packet - **/ -static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter, - union ixgbe_adv_rx_desc *rx_desc, - struct sk_buff *skb, - u32 status_err) -{ - skb->ip_summed = CHECKSUM_NONE; - - /* Rx csum disabled */ - if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED)) - return; - - /* if IP and error */ - if ((status_err & IXGBE_RXD_STAT_IPCS) && - (status_err & IXGBE_RXDADV_ERR_IPE)) { - adapter->hw_csum_rx_error++; - return; - } - - if (!(status_err & IXGBE_RXD_STAT_L4CS)) - return; - - if (status_err & IXGBE_RXDADV_ERR_TCPE) { - u16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; - - /* - * 82599 errata, UDP frames with a 0 checksum can be marked as - * checksum errors. - */ - if ((pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) && - (adapter->hw.mac.type == ixgbe_mac_82599EB)) - return; - - adapter->hw_csum_rx_error++; - return; - } - - /* It must be a TCP or UDP packet with a valid checksum */ - skb->ip_summed = CHECKSUM_UNNECESSARY; -} - -static inline void ixgbe_release_rx_desc(struct ixgbe_ring *rx_ring, u32 val) -{ - /* - * 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(val, rx_ring->tail); -} - -/** - * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split - * @rx_ring: ring to place buffers on - * @cleaned_count: number of buffers to replace - **/ -void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count) -{ - union ixgbe_adv_rx_desc *rx_desc; - struct ixgbe_rx_buffer *bi; - struct sk_buff *skb; - u16 i = rx_ring->next_to_use; - - /* do nothing if no valid netdev defined */ - if (!rx_ring->netdev) - return; - - while (cleaned_count--) { - rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i); - bi = &rx_ring->rx_buffer_info[i]; - skb = bi->skb; - - if (!skb) { - skb = netdev_alloc_skb_ip_align(rx_ring->netdev, - rx_ring->rx_buf_len); - if (!skb) { - rx_ring->rx_stats.alloc_rx_buff_failed++; - goto no_buffers; - } - /* initialize queue mapping */ - skb_record_rx_queue(skb, rx_ring->queue_index); - bi->skb = skb; - } - - if (!bi->dma) { - bi->dma = dma_map_single(rx_ring->dev, - skb->data, - rx_ring->rx_buf_len, - DMA_FROM_DEVICE); - if (dma_mapping_error(rx_ring->dev, bi->dma)) { - rx_ring->rx_stats.alloc_rx_buff_failed++; - bi->dma = 0; - goto no_buffers; - } - } - - if (ring_is_ps_enabled(rx_ring)) { - if (!bi->page) { - bi->page = netdev_alloc_page(rx_ring->netdev); - if (!bi->page) { - rx_ring->rx_stats.alloc_rx_page_failed++; - goto no_buffers; - } - } - - if (!bi->page_dma) { - /* use a half page if we're re-using */ - bi->page_offset ^= PAGE_SIZE / 2; - bi->page_dma = dma_map_page(rx_ring->dev, - bi->page, - bi->page_offset, - PAGE_SIZE / 2, - DMA_FROM_DEVICE); - if (dma_mapping_error(rx_ring->dev, - bi->page_dma)) { - rx_ring->rx_stats.alloc_rx_page_failed++; - bi->page_dma = 0; - goto no_buffers; - } - } - - /* Refresh the desc even if buffer_addrs didn't change - * because each write-back erases this info. */ - rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma); - rx_desc->read.hdr_addr = cpu_to_le64(bi->dma); - } else { - rx_desc->read.pkt_addr = cpu_to_le64(bi->dma); - rx_desc->read.hdr_addr = 0; - } - - i++; - if (i == rx_ring->count) - i = 0; - } - -no_buffers: - if (rx_ring->next_to_use != i) { - rx_ring->next_to_use = i; - ixgbe_release_rx_desc(rx_ring, i); - } -} - -static inline u16 ixgbe_get_hlen(union ixgbe_adv_rx_desc *rx_desc) -{ - /* 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. - */ - u16 hdr_info = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info); - u16 hlen = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >> - IXGBE_RXDADV_HDRBUFLEN_SHIFT; - if (hlen > IXGBE_RX_HDR_SIZE) - hlen = IXGBE_RX_HDR_SIZE; - return hlen; -} - -/** - * ixgbe_transform_rsc_queue - change rsc queue into a full packet - * @skb: pointer to the last skb in the rsc queue - * - * This function changes a queue full of hw rsc buffers into a completed - * packet. It uses the ->prev pointers to find the first packet and then - * turns it into the frag list owner. - **/ -static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb) -{ - unsigned int frag_list_size = 0; - unsigned int skb_cnt = 1; - - while (skb->prev) { - struct sk_buff *prev = skb->prev; - frag_list_size += skb->len; - skb->prev = NULL; - skb = prev; - skb_cnt++; - } - - skb_shinfo(skb)->frag_list = skb->next; - skb->next = NULL; - skb->len += frag_list_size; - skb->data_len += frag_list_size; - skb->truesize += frag_list_size; - IXGBE_RSC_CB(skb)->skb_cnt = skb_cnt; - - return skb; -} - -static inline bool ixgbe_get_rsc_state(union ixgbe_adv_rx_desc *rx_desc) -{ - return !!(le32_to_cpu(rx_desc->wb.lower.lo_dword.data) & - IXGBE_RXDADV_RSCCNT_MASK); -} - -static void ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, - struct ixgbe_ring *rx_ring, - int *work_done, int work_to_do) -{ - struct ixgbe_adapter *adapter = q_vector->adapter; - union ixgbe_adv_rx_desc *rx_desc, *next_rxd; - struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer; - struct sk_buff *skb; - unsigned int total_rx_bytes = 0, total_rx_packets = 0; - const int current_node = numa_node_id(); -#ifdef IXGBE_FCOE - int ddp_bytes = 0; -#endif /* IXGBE_FCOE */ - u32 staterr; - u16 i; - u16 cleaned_count = 0; - bool pkt_is_rsc = false; - - i = rx_ring->next_to_clean; - rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i); - staterr = le32_to_cpu(rx_desc->wb.upper.status_error); - - while (staterr & IXGBE_RXD_STAT_DD) { - u32 upper_len = 0; - - rmb(); /* read descriptor and rx_buffer_info after status DD */ - - rx_buffer_info = &rx_ring->rx_buffer_info[i]; - - skb = rx_buffer_info->skb; - rx_buffer_info->skb = NULL; - prefetch(skb->data); - - if (ring_is_rsc_enabled(rx_ring)) - pkt_is_rsc = ixgbe_get_rsc_state(rx_desc); - - /* if this is a skb from previous receive DMA will be 0 */ - if (rx_buffer_info->dma) { - u16 hlen; - if (pkt_is_rsc && - !(staterr & IXGBE_RXD_STAT_EOP) && - !skb->prev) { - /* - * When HWRSC is enabled, delay unmapping - * of the first packet. It carries the - * header information, HW may still - * access the header after the writeback. - * Only unmap it when EOP is reached - */ - IXGBE_RSC_CB(skb)->delay_unmap = true; - IXGBE_RSC_CB(skb)->dma = rx_buffer_info->dma; - } else { - dma_unmap_single(rx_ring->dev, - rx_buffer_info->dma, - rx_ring->rx_buf_len, - DMA_FROM_DEVICE); - } - rx_buffer_info->dma = 0; - - if (ring_is_ps_enabled(rx_ring)) { - hlen = ixgbe_get_hlen(rx_desc); - upper_len = le16_to_cpu(rx_desc->wb.upper.length); - } else { - hlen = le16_to_cpu(rx_desc->wb.upper.length); - } - - skb_put(skb, hlen); - } else { - /* assume packet split since header is unmapped */ - upper_len = le16_to_cpu(rx_desc->wb.upper.length); - } - - if (upper_len) { - dma_unmap_page(rx_ring->dev, - rx_buffer_info->page_dma, - PAGE_SIZE / 2, - DMA_FROM_DEVICE); - rx_buffer_info->page_dma = 0; - skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, - rx_buffer_info->page, - rx_buffer_info->page_offset, - upper_len); - - if ((page_count(rx_buffer_info->page) == 1) && - (page_to_nid(rx_buffer_info->page) == current_node)) - get_page(rx_buffer_info->page); - else - rx_buffer_info->page = NULL; - - skb->len += upper_len; - skb->data_len += upper_len; - skb->truesize += upper_len; - } - - i++; - if (i == rx_ring->count) - i = 0; - - next_rxd = IXGBE_RX_DESC_ADV(rx_ring, i); - prefetch(next_rxd); - cleaned_count++; - - if (pkt_is_rsc) { - u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >> - IXGBE_RXDADV_NEXTP_SHIFT; - next_buffer = &rx_ring->rx_buffer_info[nextp]; - } else { - next_buffer = &rx_ring->rx_buffer_info[i]; - } - - if (!(staterr & IXGBE_RXD_STAT_EOP)) { - if (ring_is_ps_enabled(rx_ring)) { - rx_buffer_info->skb = next_buffer->skb; - rx_buffer_info->dma = next_buffer->dma; - next_buffer->skb = skb; - next_buffer->dma = 0; - } else { - skb->next = next_buffer->skb; - skb->next->prev = skb; - } - rx_ring->rx_stats.non_eop_descs++; - goto next_desc; - } - - if (skb->prev) { - skb = ixgbe_transform_rsc_queue(skb); - /* if we got here without RSC the packet is invalid */ - if (!pkt_is_rsc) { - __pskb_trim(skb, 0); - rx_buffer_info->skb = skb; - goto next_desc; - } - } - - if (ring_is_rsc_enabled(rx_ring)) { - if (IXGBE_RSC_CB(skb)->delay_unmap) { - dma_unmap_single(rx_ring->dev, - IXGBE_RSC_CB(skb)->dma, - rx_ring->rx_buf_len, - DMA_FROM_DEVICE); - IXGBE_RSC_CB(skb)->dma = 0; - IXGBE_RSC_CB(skb)->delay_unmap = false; - } - } - if (pkt_is_rsc) { - if (ring_is_ps_enabled(rx_ring)) - rx_ring->rx_stats.rsc_count += - skb_shinfo(skb)->nr_frags; - else - rx_ring->rx_stats.rsc_count += - IXGBE_RSC_CB(skb)->skb_cnt; - rx_ring->rx_stats.rsc_flush++; - } - - /* ERR_MASK will only have valid bits if EOP set */ - if (unlikely(staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK)) { - dev_kfree_skb_any(skb); - goto next_desc; - } - - ixgbe_rx_checksum(adapter, rx_desc, skb, staterr); - if (adapter->netdev->features & NETIF_F_RXHASH) - ixgbe_rx_hash(rx_desc, skb); - - /* probably a little skewed due to removing CRC */ - total_rx_bytes += skb->len; - total_rx_packets++; - - skb->protocol = eth_type_trans(skb, rx_ring->netdev); -#ifdef IXGBE_FCOE - /* if ddp, not passing to ULD unless for FCP_RSP or error */ - if (ixgbe_rx_is_fcoe(adapter, rx_desc)) { - ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb, - staterr); - if (!ddp_bytes) { - dev_kfree_skb_any(skb); - goto next_desc; - } - } -#endif /* IXGBE_FCOE */ - ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc); - -next_desc: - rx_desc->wb.upper.status_error = 0; - - (*work_done)++; - if (*work_done >= work_to_do) - break; - - /* return some buffers to hardware, one at a time is too slow */ - if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { - ixgbe_alloc_rx_buffers(rx_ring, cleaned_count); - cleaned_count = 0; - } - - /* use prefetched values */ - rx_desc = next_rxd; - staterr = le32_to_cpu(rx_desc->wb.upper.status_error); - } - - rx_ring->next_to_clean = i; - cleaned_count = ixgbe_desc_unused(rx_ring); - - if (cleaned_count) - ixgbe_alloc_rx_buffers(rx_ring, cleaned_count); - -#ifdef IXGBE_FCOE - /* include DDPed FCoE data */ - if (ddp_bytes > 0) { - unsigned int mss; - - mss = rx_ring->netdev->mtu - sizeof(struct fcoe_hdr) - - sizeof(struct fc_frame_header) - - sizeof(struct fcoe_crc_eof); - if (mss > 512) - mss &= ~511; - total_rx_bytes += ddp_bytes; - total_rx_packets += DIV_ROUND_UP(ddp_bytes, mss); - } -#endif /* IXGBE_FCOE */ - - u64_stats_update_begin(&rx_ring->syncp); - rx_ring->stats.packets += total_rx_packets; - rx_ring->stats.bytes += total_rx_bytes; - u64_stats_update_end(&rx_ring->syncp); - q_vector->rx.total_packets += total_rx_packets; - q_vector->rx.total_bytes += total_rx_bytes; -} - -static int ixgbe_clean_rxonly(struct napi_struct *, int); -/** - * ixgbe_configure_msix - Configure MSI-X hardware - * @adapter: board private structure - * - * ixgbe_configure_msix sets up the hardware to properly generate MSI-X - * interrupts. - **/ -static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) -{ - struct ixgbe_q_vector *q_vector; - int i, q_vectors, v_idx, r_idx; - u32 mask; - - q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - - /* - * Populate the IVAR table and set the ITR values to the - * corresponding register. - */ - for (v_idx = 0; v_idx < q_vectors; v_idx++) { - q_vector = adapter->q_vector[v_idx]; - /* XXX for_each_set_bit(...) */ - r_idx = find_first_bit(q_vector->rx.idx, - adapter->num_rx_queues); - - for (i = 0; i < q_vector->rx.count; i++) { - u8 reg_idx = adapter->rx_ring[r_idx]->reg_idx; - ixgbe_set_ivar(adapter, 0, reg_idx, v_idx); - r_idx = find_next_bit(q_vector->rx.idx, - adapter->num_rx_queues, - r_idx + 1); - } - r_idx = find_first_bit(q_vector->tx.idx, - adapter->num_tx_queues); - - for (i = 0; i < q_vector->tx.count; i++) { - u8 reg_idx = adapter->tx_ring[r_idx]->reg_idx; - ixgbe_set_ivar(adapter, 1, reg_idx, v_idx); - r_idx = find_next_bit(q_vector->tx.idx, - adapter->num_tx_queues, - r_idx + 1); - } - - if (q_vector->tx.count && !q_vector->rx.count) - /* tx only */ - q_vector->eitr = adapter->tx_eitr_param; - else if (q_vector->rx.count) - /* rx or mixed */ - q_vector->eitr = adapter->rx_eitr_param; - - ixgbe_write_eitr(q_vector); - /* If ATR is enabled, set interrupt affinity */ - if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { - /* - * Allocate the affinity_hint cpumask, assign the mask - * for this vector, and set our affinity_hint for - * this irq. - */ - if (!alloc_cpumask_var(&q_vector->affinity_mask, - GFP_KERNEL)) - return; - cpumask_set_cpu(v_idx, q_vector->affinity_mask); - irq_set_affinity_hint(adapter->msix_entries[v_idx].vector, - q_vector->affinity_mask); - } - } - - switch (adapter->hw.mac.type) { - case ixgbe_mac_82598EB: - ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX, - v_idx); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - ixgbe_set_ivar(adapter, -1, 1, v_idx); - break; - - default: - break; - } - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); - - /* set up to autoclear timer, and the vectors */ - mask = IXGBE_EIMS_ENABLE_MASK; - if (adapter->num_vfs) - mask &= ~(IXGBE_EIMS_OTHER | - IXGBE_EIMS_MAILBOX | - IXGBE_EIMS_LSC); - else - mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); -} - -enum latency_range { - lowest_latency = 0, - low_latency = 1, - bulk_latency = 2, - latency_invalid = 255 -}; - -/** - * ixgbe_update_itr - update the dynamic ITR value based on statistics - * @q_vector: structure containing interrupt and ring information - * @ring_container: structure containing ring performance data - * - * 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 ixgbe_param.c) - **/ -static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector, - struct ixgbe_ring_container *ring_container) -{ - u64 bytes_perint; - struct ixgbe_adapter *adapter = q_vector->adapter; - int bytes = ring_container->total_bytes; - int packets = ring_container->total_packets; - u32 timepassed_us; - u8 itr_setting = ring_container->itr; - - if (packets == 0) - return; - - /* simple throttlerate management - * 0-20MB/s lowest (100000 ints/s) - * 20-100MB/s low (20000 ints/s) - * 100-1249MB/s bulk (8000 ints/s) - */ - /* what was last interrupt timeslice? */ - timepassed_us = 1000000/q_vector->eitr; - bytes_perint = bytes / timepassed_us; /* bytes/usec */ - - switch (itr_setting) { - case lowest_latency: - if (bytes_perint > adapter->eitr_low) - itr_setting = low_latency; - break; - case low_latency: - if (bytes_perint > adapter->eitr_high) - itr_setting = bulk_latency; - else if (bytes_perint <= adapter->eitr_low) - itr_setting = lowest_latency; - break; - case bulk_latency: - if (bytes_perint <= adapter->eitr_high) - itr_setting = low_latency; - break; - } - - /* clear work counters since we have the values we need */ - ring_container->total_bytes = 0; - ring_container->total_packets = 0; - - /* write updated itr to ring container */ - ring_container->itr = itr_setting; -} - -/** - * ixgbe_write_eitr - write EITR register in hardware specific way - * @q_vector: structure containing interrupt and ring information - * - * This function is made to be called by ethtool and by the driver - * when it needs to update EITR registers at runtime. Hardware - * specific quirks/differences are taken care of here. - */ -void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) -{ - struct ixgbe_adapter *adapter = q_vector->adapter; - struct ixgbe_hw *hw = &adapter->hw; - int v_idx = q_vector->v_idx; - u32 itr_reg = EITR_INTS_PER_SEC_TO_REG(q_vector->eitr); - - switch (adapter->hw.mac.type) { - case ixgbe_mac_82598EB: - /* must write high and low 16 bits to reset counter */ - itr_reg |= (itr_reg << 16); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - /* - * 82599 and X540 can support a value of zero, so allow it for - * max interrupt rate, but there is an errata where it can - * not be zero with RSC - */ - if (itr_reg == 8 && - !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) - itr_reg = 0; - - /* - * set the WDIS bit to not clear the timer bits and cause an - * immediate assertion of the interrupt - */ - itr_reg |= IXGBE_EITR_CNT_WDIS; - break; - default: - break; - } - IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg); -} - -static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector) -{ - u32 new_itr = q_vector->eitr; - u8 current_itr; - - ixgbe_update_itr(q_vector, &q_vector->tx); - ixgbe_update_itr(q_vector, &q_vector->rx); - - current_itr = max(q_vector->rx.itr, q_vector->tx.itr); - - switch (current_itr) { - /* counts and packets in update_itr are dependent on these numbers */ - case lowest_latency: - new_itr = 100000; - break; - case low_latency: - new_itr = 20000; /* aka hwitr = ~200 */ - break; - case bulk_latency: - new_itr = 8000; - break; - default: - break; - } - - if (new_itr != q_vector->eitr) { - /* do an exponential smoothing */ - new_itr = ((q_vector->eitr * 9) + new_itr)/10; - - /* save the algorithm value here */ - q_vector->eitr = new_itr; - - ixgbe_write_eitr(q_vector); - } -} - -/** - * ixgbe_check_overtemp_subtask - check for over tempurature - * @adapter: pointer to adapter - **/ -static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 eicr = adapter->interrupt_event; - - if (test_bit(__IXGBE_DOWN, &adapter->state)) - return; - - if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) && - !(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT)) - return; - - adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT; - - switch (hw->device_id) { - case IXGBE_DEV_ID_82599_T3_LOM: - /* - * Since the warning interrupt is for both ports - * we don't have to check if: - * - This interrupt wasn't for our port. - * - We may have missed the interrupt so always have to - * check if we got a LSC - */ - if (!(eicr & IXGBE_EICR_GPI_SDP0) && - !(eicr & IXGBE_EICR_LSC)) - return; - - if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) { - u32 autoneg; - bool link_up = false; - - hw->mac.ops.check_link(hw, &autoneg, &link_up, false); - - if (link_up) - return; - } - - /* Check if this is not due to overtemp */ - if (hw->phy.ops.check_overtemp(hw) != IXGBE_ERR_OVERTEMP) - return; - - break; - default: - if (!(eicr & IXGBE_EICR_GPI_SDP0)) - return; - break; - } - e_crit(drv, - "Network adapter has been stopped because it has over heated. " - "Restart the computer. If the problem persists, " - "power off the system and replace the adapter\n"); - - adapter->interrupt_event = 0; -} - -static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr) -{ - struct ixgbe_hw *hw = &adapter->hw; - - if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) && - (eicr & IXGBE_EICR_GPI_SDP1)) { - e_crit(probe, "Fan has stopped, replace the adapter\n"); - /* write to clear the interrupt */ - IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1); - } -} - -static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr) -{ - struct ixgbe_hw *hw = &adapter->hw; - - if (eicr & IXGBE_EICR_GPI_SDP2) { - /* Clear the interrupt */ - IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2); - if (!test_bit(__IXGBE_DOWN, &adapter->state)) { - adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; - ixgbe_service_event_schedule(adapter); - } - } - - if (eicr & IXGBE_EICR_GPI_SDP1) { - /* Clear the interrupt */ - IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1); - if (!test_bit(__IXGBE_DOWN, &adapter->state)) { - adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; - ixgbe_service_event_schedule(adapter); - } - } -} - -static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - - adapter->lsc_int++; - adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; - adapter->link_check_timeout = jiffies; - if (!test_bit(__IXGBE_DOWN, &adapter->state)) { - IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); - IXGBE_WRITE_FLUSH(hw); - ixgbe_service_event_schedule(adapter); - } -} - -static irqreturn_t ixgbe_msix_lsc(int irq, void *data) -{ - struct ixgbe_adapter *adapter = data; - struct ixgbe_hw *hw = &adapter->hw; - u32 eicr; - - /* - * Workaround for Silicon errata. Use clear-by-write instead - * of clear-by-read. Reading with EICS will return the - * interrupt causes without clearing, which later be done - * with the write to EICR. - */ - eicr = IXGBE_READ_REG(hw, IXGBE_EICS); - IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr); - - if (eicr & IXGBE_EICR_LSC) - ixgbe_check_lsc(adapter); - - if (eicr & IXGBE_EICR_MAILBOX) - ixgbe_msg_task(adapter); - - switch (hw->mac.type) { - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - /* Handle Flow Director Full threshold interrupt */ - if (eicr & IXGBE_EICR_FLOW_DIR) { - int reinit_count = 0; - int i; - for (i = 0; i < adapter->num_tx_queues; i++) { - struct ixgbe_ring *ring = adapter->tx_ring[i]; - if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE, - &ring->state)) - reinit_count++; - } - if (reinit_count) { - /* no more flow director interrupts until after init */ - IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR); - eicr &= ~IXGBE_EICR_FLOW_DIR; - adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT; - ixgbe_service_event_schedule(adapter); - } - } - ixgbe_check_sfp_event(adapter, eicr); - if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) && - ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC))) { - if (!test_bit(__IXGBE_DOWN, &adapter->state)) { - adapter->interrupt_event = eicr; - adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; - ixgbe_service_event_schedule(adapter); - } - } - break; - default: - break; - } - - ixgbe_check_fan_failure(adapter, eicr); - - /* re-enable the original interrupt state, no lsc, no queues */ - if (!test_bit(__IXGBE_DOWN, &adapter->state)) - IXGBE_WRITE_REG(hw, IXGBE_EIMS, eicr & - ~(IXGBE_EIMS_LSC | IXGBE_EIMS_RTX_QUEUE)); - - return IRQ_HANDLED; -} - -static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter, - u64 qmask) -{ - u32 mask; - struct ixgbe_hw *hw = &adapter->hw; - - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - mask = (IXGBE_EIMS_RTX_QUEUE & qmask); - IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - mask = (qmask & 0xFFFFFFFF); - if (mask) - IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask); - mask = (qmask >> 32); - if (mask) - IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask); - break; - default: - break; - } - /* skip the flush */ -} - -static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter, - u64 qmask) -{ - u32 mask; - struct ixgbe_hw *hw = &adapter->hw; - - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - mask = (IXGBE_EIMS_RTX_QUEUE & qmask); - IXGBE_WRITE_REG(hw, IXGBE_EIMC, mask); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - mask = (qmask & 0xFFFFFFFF); - if (mask) - IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(0), mask); - mask = (qmask >> 32); - if (mask) - IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(1), mask); - break; - default: - break; - } - /* skip the flush */ -} - -static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data) -{ - struct ixgbe_q_vector *q_vector = data; - struct ixgbe_adapter *adapter = q_vector->adapter; - struct ixgbe_ring *tx_ring; - int i, r_idx; - - if (!q_vector->tx.count) - return IRQ_HANDLED; - - r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues); - for (i = 0; i < q_vector->tx.count; i++) { - tx_ring = adapter->tx_ring[r_idx]; - r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues, - r_idx + 1); - } - - /* EIAM disabled interrupts (on this vector) for us */ - napi_schedule(&q_vector->napi); - - return IRQ_HANDLED; -} - -/** - * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues) - * @irq: unused - * @data: pointer to our q_vector struct for this interrupt vector - **/ -static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data) -{ - struct ixgbe_q_vector *q_vector = data; - struct ixgbe_adapter *adapter = q_vector->adapter; - struct ixgbe_ring *rx_ring; - int r_idx; - int i; - -#ifdef CONFIG_IXGBE_DCA - if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) - ixgbe_update_dca(q_vector); -#endif - - r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues); - for (i = 0; i < q_vector->rx.count; i++) { - rx_ring = adapter->rx_ring[r_idx]; - r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues, - r_idx + 1); - } - - if (!q_vector->rx.count) - return IRQ_HANDLED; - - /* EIAM disabled interrupts (on this vector) for us */ - napi_schedule(&q_vector->napi); - - return IRQ_HANDLED; -} - -static irqreturn_t ixgbe_msix_clean_many(int irq, void *data) -{ - struct ixgbe_q_vector *q_vector = data; - struct ixgbe_adapter *adapter = q_vector->adapter; - struct ixgbe_ring *ring; - int r_idx; - int i; - - if (!q_vector->tx.count && !q_vector->rx.count) - return IRQ_HANDLED; - - r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues); - for (i = 0; i < q_vector->tx.count; i++) { - ring = adapter->tx_ring[r_idx]; - r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues, - r_idx + 1); - } - - r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues); - for (i = 0; i < q_vector->rx.count; i++) { - ring = adapter->rx_ring[r_idx]; - r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues, - r_idx + 1); - } - - /* EIAM disabled interrupts (on this vector) for us */ - napi_schedule(&q_vector->napi); - - return IRQ_HANDLED; -} - -/** - * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine - * @napi: napi struct with our devices info in it - * @budget: amount of work driver is allowed to do this pass, in packets - * - * This function is optimized for cleaning one queue only on a single - * q_vector!!! - **/ -static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget) -{ - struct ixgbe_q_vector *q_vector = - container_of(napi, struct ixgbe_q_vector, napi); - struct ixgbe_adapter *adapter = q_vector->adapter; - struct ixgbe_ring *rx_ring = NULL; - int work_done = 0; - long r_idx; - -#ifdef CONFIG_IXGBE_DCA - if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) - ixgbe_update_dca(q_vector); -#endif - - r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues); - rx_ring = adapter->rx_ring[r_idx]; - - ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget); - - /* If all Rx work done, exit the polling mode */ - if (work_done < budget) { - napi_complete(napi); - if (adapter->rx_itr_setting & 1) - ixgbe_set_itr(q_vector); - if (!test_bit(__IXGBE_DOWN, &adapter->state)) - ixgbe_irq_enable_queues(adapter, - ((u64)1 << q_vector->v_idx)); - } - - return work_done; -} - -/** - * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine - * @napi: napi struct with our devices info in it - * @budget: amount of work driver is allowed to do this pass, in packets - * - * This function will clean more than one rx queue associated with a - * q_vector. - **/ -static int ixgbe_clean_rxtx_many(struct napi_struct *napi, int budget) -{ - struct ixgbe_q_vector *q_vector = - container_of(napi, struct ixgbe_q_vector, napi); - struct ixgbe_adapter *adapter = q_vector->adapter; - struct ixgbe_ring *ring = NULL; - int work_done = 0, i; - long r_idx; - bool tx_clean_complete = true; - -#ifdef CONFIG_IXGBE_DCA - if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) - ixgbe_update_dca(q_vector); -#endif - - r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues); - for (i = 0; i < q_vector->tx.count; i++) { - ring = adapter->tx_ring[r_idx]; - tx_clean_complete &= ixgbe_clean_tx_irq(q_vector, ring); - r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues, - r_idx + 1); - } - - /* attempt to distribute budget to each queue fairly, but don't allow - * the budget to go below 1 because we'll exit polling */ - budget /= (q_vector->rx.count ?: 1); - budget = max(budget, 1); - r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues); - for (i = 0; i < q_vector->rx.count; i++) { - ring = adapter->rx_ring[r_idx]; - ixgbe_clean_rx_irq(q_vector, ring, &work_done, budget); - r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues, - r_idx + 1); - } - - r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues); - ring = adapter->rx_ring[r_idx]; - /* If all Rx work done, exit the polling mode */ - if (work_done < budget) { - napi_complete(napi); - if (adapter->rx_itr_setting & 1) - ixgbe_set_itr(q_vector); - if (!test_bit(__IXGBE_DOWN, &adapter->state)) - ixgbe_irq_enable_queues(adapter, - ((u64)1 << q_vector->v_idx)); - return 0; - } - - return work_done; -} - -/** - * ixgbe_clean_txonly - msix (aka one shot) tx clean routine - * @napi: napi struct with our devices info in it - * @budget: amount of work driver is allowed to do this pass, in packets - * - * This function is optimized for cleaning one queue only on a single - * q_vector!!! - **/ -static int ixgbe_clean_txonly(struct napi_struct *napi, int budget) -{ - struct ixgbe_q_vector *q_vector = - container_of(napi, struct ixgbe_q_vector, napi); - struct ixgbe_adapter *adapter = q_vector->adapter; - struct ixgbe_ring *tx_ring = NULL; - int work_done = 0; - long r_idx; - -#ifdef CONFIG_IXGBE_DCA - if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) - ixgbe_update_dca(q_vector); -#endif - - r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues); - tx_ring = adapter->tx_ring[r_idx]; - - if (!ixgbe_clean_tx_irq(q_vector, tx_ring)) - work_done = budget; - - /* If all Tx work done, exit the polling mode */ - if (work_done < budget) { - napi_complete(napi); - if (adapter->tx_itr_setting & 1) - ixgbe_set_itr(q_vector); - if (!test_bit(__IXGBE_DOWN, &adapter->state)) - ixgbe_irq_enable_queues(adapter, - ((u64)1 << q_vector->v_idx)); - } - - return work_done; -} - -static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx, - int r_idx) -{ - struct ixgbe_q_vector *q_vector = a->q_vector[v_idx]; - struct ixgbe_ring *rx_ring = a->rx_ring[r_idx]; - - set_bit(r_idx, q_vector->rx.idx); - q_vector->rx.count++; - rx_ring->q_vector = q_vector; -} - -static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx, - int t_idx) -{ - struct ixgbe_q_vector *q_vector = a->q_vector[v_idx]; - struct ixgbe_ring *tx_ring = a->tx_ring[t_idx]; - - set_bit(t_idx, q_vector->tx.idx); - q_vector->tx.count++; - tx_ring->q_vector = q_vector; - q_vector->tx.work_limit = a->tx_work_limit; -} - -/** - * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors - * @adapter: board private structure to initialize - * - * This function maps descriptor rings to the queue-specific vectors - * we were allotted through the MSI-X enabling code. Ideally, we'd have - * one vector per ring/queue, but on a constrained vector budget, we - * group the rings as "efficiently" as possible. You would add new - * mapping configurations in here. - **/ -static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter) -{ - int q_vectors; - int v_start = 0; - int rxr_idx = 0, txr_idx = 0; - int rxr_remaining = adapter->num_rx_queues; - int txr_remaining = adapter->num_tx_queues; - int i, j; - int rqpv, tqpv; - int err = 0; - - /* No mapping required if MSI-X is disabled. */ - if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) - goto out; - - q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - - /* - * The ideal configuration... - * We have enough vectors to map one per queue. - */ - if (q_vectors == adapter->num_rx_queues + adapter->num_tx_queues) { - for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) - map_vector_to_rxq(adapter, v_start, rxr_idx); - - for (; txr_idx < txr_remaining; v_start++, txr_idx++) - map_vector_to_txq(adapter, v_start, txr_idx); - - goto out; - } - - /* - * If we don't have enough vectors for a 1-to-1 - * mapping, we'll have to group them so there are - * multiple queues per vector. - */ - /* Re-adjusting *qpv takes care of the remainder. */ - for (i = v_start; i < q_vectors; i++) { - rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i); - for (j = 0; j < rqpv; j++) { - map_vector_to_rxq(adapter, i, rxr_idx); - rxr_idx++; - rxr_remaining--; - } - tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i); - for (j = 0; j < tqpv; j++) { - map_vector_to_txq(adapter, i, txr_idx); - txr_idx++; - txr_remaining--; - } - } -out: - return err; -} - -/** - * ixgbe_request_msix_irqs - Initialize MSI-X interrupts - * @adapter: board private structure - * - * ixgbe_request_msix_irqs allocates MSI-X vectors and requests - * interrupts from the kernel. - **/ -static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - irqreturn_t (*handler)(int, void *); - int i, vector, q_vectors, err; - int ri = 0, ti = 0; - - /* Decrement for Other and TCP Timer vectors */ - q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - - err = ixgbe_map_rings_to_vectors(adapter); - if (err) - return err; - -#define SET_HANDLER(_v) (((_v)->rx.count && (_v)->tx.count) \ - ? &ixgbe_msix_clean_many : \ - (_v)->rx.count ? &ixgbe_msix_clean_rx : \ - (_v)->tx.count ? &ixgbe_msix_clean_tx : \ - NULL) - for (vector = 0; vector < q_vectors; vector++) { - struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; - handler = SET_HANDLER(q_vector); - - if (handler == &ixgbe_msix_clean_rx) { - snprintf(q_vector->name, sizeof(q_vector->name) - 1, - "%s-%s-%d", netdev->name, "rx", ri++); - } else if (handler == &ixgbe_msix_clean_tx) { - snprintf(q_vector->name, sizeof(q_vector->name) - 1, - "%s-%s-%d", netdev->name, "tx", ti++); - } else if (handler == &ixgbe_msix_clean_many) { - snprintf(q_vector->name, sizeof(q_vector->name) - 1, - "%s-%s-%d", netdev->name, "TxRx", ri++); - ti++; - } else { - /* skip this unused q_vector */ - continue; - } - err = request_irq(adapter->msix_entries[vector].vector, - handler, 0, q_vector->name, - q_vector); - if (err) { - e_err(probe, "request_irq failed for MSIX interrupt " - "Error: %d\n", err); - goto free_queue_irqs; - } - } - - sprintf(adapter->lsc_int_name, "%s:lsc", netdev->name); - err = request_irq(adapter->msix_entries[vector].vector, - ixgbe_msix_lsc, 0, adapter->lsc_int_name, adapter); - if (err) { - e_err(probe, "request_irq for msix_lsc failed: %d\n", err); - goto free_queue_irqs; - } - - return 0; - -free_queue_irqs: - for (i = vector - 1; i >= 0; i--) - free_irq(adapter->msix_entries[--vector].vector, - adapter->q_vector[i]); - adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; - pci_disable_msix(adapter->pdev); - kfree(adapter->msix_entries); - adapter->msix_entries = NULL; - return err; -} - -/** - * ixgbe_irq_enable - Enable default interrupt generation settings - * @adapter: board private structure - **/ -static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues, - bool flush) -{ - u32 mask; - - mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE); - if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) - mask |= IXGBE_EIMS_GPI_SDP0; - if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) - mask |= IXGBE_EIMS_GPI_SDP1; - switch (adapter->hw.mac.type) { - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - mask |= IXGBE_EIMS_ECC; - mask |= IXGBE_EIMS_GPI_SDP1; - mask |= IXGBE_EIMS_GPI_SDP2; - if (adapter->num_vfs) - mask |= IXGBE_EIMS_MAILBOX; - break; - default: - break; - } - if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) - mask |= IXGBE_EIMS_FLOW_DIR; - - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); - if (queues) - ixgbe_irq_enable_queues(adapter, ~0); - if (flush) - IXGBE_WRITE_FLUSH(&adapter->hw); - - if (adapter->num_vfs > 32) { - u32 eitrsel = (1 << (adapter->num_vfs - 32)) - 1; - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel); - } -} - -/** - * ixgbe_intr - legacy mode Interrupt Handler - * @irq: interrupt number - * @data: pointer to a network interface device structure - **/ -static irqreturn_t ixgbe_intr(int irq, void *data) -{ - struct ixgbe_adapter *adapter = data; - struct ixgbe_hw *hw = &adapter->hw; - struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; - u32 eicr; - - /* - * Workaround for silicon errata on 82598. Mask the interrupts - * before the read of EICR. - */ - IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); - - /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read - * therefore no explict interrupt disable is necessary */ - eicr = IXGBE_READ_REG(hw, IXGBE_EICR); - if (!eicr) { - /* - * shared interrupt alert! - * make sure interrupts are enabled because the read will - * have disabled interrupts due to EIAM - * finish the workaround of silicon errata on 82598. Unmask - * the interrupt that we masked before the EICR read. - */ - if (!test_bit(__IXGBE_DOWN, &adapter->state)) - ixgbe_irq_enable(adapter, true, true); - return IRQ_NONE; /* Not our interrupt */ - } - - if (eicr & IXGBE_EICR_LSC) - ixgbe_check_lsc(adapter); - - switch (hw->mac.type) { - case ixgbe_mac_82599EB: - ixgbe_check_sfp_event(adapter, eicr); - if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) && - ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC))) { - if (!test_bit(__IXGBE_DOWN, &adapter->state)) { - adapter->interrupt_event = eicr; - adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; - ixgbe_service_event_schedule(adapter); - } - } - break; - default: - break; - } - - ixgbe_check_fan_failure(adapter, eicr); - - if (napi_schedule_prep(&(q_vector->napi))) { - /* would disable interrupts here but EIAM disabled it */ - __napi_schedule(&(q_vector->napi)); - } - - /* - * re-enable link(maybe) and non-queue interrupts, no flush. - * ixgbe_poll will re-enable the queue interrupts - */ - - if (!test_bit(__IXGBE_DOWN, &adapter->state)) - ixgbe_irq_enable(adapter, false, false); - - return IRQ_HANDLED; -} - -static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter) -{ - int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - - for (i = 0; i < q_vectors; i++) { - struct ixgbe_q_vector *q_vector = adapter->q_vector[i]; - bitmap_zero(q_vector->rx.idx, MAX_RX_QUEUES); - bitmap_zero(q_vector->tx.idx, MAX_TX_QUEUES); - q_vector->rx.count = 0; - q_vector->tx.count = 0; - } -} - -/** - * ixgbe_request_irq - initialize interrupts - * @adapter: board private structure - * - * Attempts to configure interrupts using the best available - * capabilities of the hardware and kernel. - **/ -static int ixgbe_request_irq(struct ixgbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - int err; - - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { - err = ixgbe_request_msix_irqs(adapter); - } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { - err = request_irq(adapter->pdev->irq, ixgbe_intr, 0, - netdev->name, adapter); - } else { - err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED, - netdev->name, adapter); - } - - if (err) - e_err(probe, "request_irq failed, Error %d\n", err); - - return err; -} - -static void ixgbe_free_irq(struct ixgbe_adapter *adapter) -{ - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { - int i, q_vectors; - - q_vectors = adapter->num_msix_vectors; - - i = q_vectors - 1; - free_irq(adapter->msix_entries[i].vector, adapter); - - i--; - for (; i >= 0; i--) { - /* free only the irqs that were actually requested */ - if (!adapter->q_vector[i]->rx.count && - !adapter->q_vector[i]->tx.count) - continue; - - free_irq(adapter->msix_entries[i].vector, - adapter->q_vector[i]); - } - - ixgbe_reset_q_vectors(adapter); - } else { - free_irq(adapter->pdev->irq, adapter); - } -} - -/** - * ixgbe_irq_disable - Mask off interrupt generation on the NIC - * @adapter: board private structure - **/ -static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) -{ - switch (adapter->hw.mac.type) { - case ixgbe_mac_82598EB: - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0); - if (adapter->num_vfs > 32) - IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0); - break; - default: - break; - } - IXGBE_WRITE_FLUSH(&adapter->hw); - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { - int i; - for (i = 0; i < adapter->num_msix_vectors; i++) - synchronize_irq(adapter->msix_entries[i].vector); - } else { - synchronize_irq(adapter->pdev->irq); - } -} - -/** - * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts - * - **/ -static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - - IXGBE_WRITE_REG(hw, IXGBE_EITR(0), - EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr_param)); - - ixgbe_set_ivar(adapter, 0, 0, 0); - ixgbe_set_ivar(adapter, 1, 0, 0); - - map_vector_to_rxq(adapter, 0, 0); - map_vector_to_txq(adapter, 0, 0); - - e_info(hw, "Legacy interrupt IVAR setup done\n"); -} - -/** - * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset - * @adapter: board private structure - * @ring: structure containing ring specific data - * - * Configure the Tx descriptor ring after a reset. - **/ -void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter, - struct ixgbe_ring *ring) -{ - struct ixgbe_hw *hw = &adapter->hw; - u64 tdba = ring->dma; - int wait_loop = 10; - u32 txdctl; - u8 reg_idx = ring->reg_idx; - - /* disable queue to avoid issues while updating state */ - txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); - IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), - txdctl & ~IXGBE_TXDCTL_ENABLE); - IXGBE_WRITE_FLUSH(hw); - - IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx), - (tdba & DMA_BIT_MASK(32))); - IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32)); - IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx), - ring->count * sizeof(union ixgbe_adv_tx_desc)); - IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0); - IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0); - ring->tail = hw->hw_addr + IXGBE_TDT(reg_idx); - - /* configure fetching thresholds */ - if (adapter->rx_itr_setting == 0) { - /* cannot set wthresh when itr==0 */ - txdctl &= ~0x007F0000; - } else { - /* enable WTHRESH=8 descriptors, to encourage burst writeback */ - txdctl |= (8 << 16); - } - if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { - /* PThresh workaround for Tx hang with DFP enabled. */ - txdctl |= 32; - } - - /* reinitialize flowdirector state */ - if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) && - adapter->atr_sample_rate) { - ring->atr_sample_rate = adapter->atr_sample_rate; - ring->atr_count = 0; - set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state); - } else { - ring->atr_sample_rate = 0; - } - - clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state); - - /* enable queue */ - txdctl |= IXGBE_TXDCTL_ENABLE; - IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl); - - /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */ - if (hw->mac.type == ixgbe_mac_82598EB && - !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) - return; - - /* poll to verify queue is enabled */ - do { - usleep_range(1000, 2000); - txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); - } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE)); - if (!wait_loop) - e_err(drv, "Could not enable Tx Queue %d\n", reg_idx); -} - -static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 rttdcs; - u32 reg; - u8 tcs = netdev_get_num_tc(adapter->netdev); - - if (hw->mac.type == ixgbe_mac_82598EB) - return; - - /* disable the arbiter while setting MTQC */ - rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS); - rttdcs |= IXGBE_RTTDCS_ARBDIS; - IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); - - /* set transmit pool layout */ - switch (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { - case (IXGBE_FLAG_SRIOV_ENABLED): - IXGBE_WRITE_REG(hw, IXGBE_MTQC, - (IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF)); - break; - default: - if (!tcs) - reg = IXGBE_MTQC_64Q_1PB; - else if (tcs <= 4) - reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; - else - reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; - - IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg); - - /* Enable Security TX Buffer IFG for multiple pb */ - if (tcs) { - reg = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG); - reg |= IXGBE_SECTX_DCB; - IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, reg); - } - break; - } - - /* re-enable the arbiter */ - rttdcs &= ~IXGBE_RTTDCS_ARBDIS; - IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); -} - -/** - * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset - * @adapter: board private structure - * - * Configure the Tx unit of the MAC after a reset. - **/ -static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 dmatxctl; - u32 i; - - ixgbe_setup_mtqc(adapter); - - if (hw->mac.type != ixgbe_mac_82598EB) { - /* DMATXCTL.EN must be before Tx queues are enabled */ - dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); - dmatxctl |= IXGBE_DMATXCTL_TE; - IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); - } - - /* Setup the HW Tx Head and Tail descriptor pointers */ - for (i = 0; i < adapter->num_tx_queues; i++) - ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]); -} - -#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 - -static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, - struct ixgbe_ring *rx_ring) -{ - u32 srrctl; - u8 reg_idx = rx_ring->reg_idx; - - switch (adapter->hw.mac.type) { - case ixgbe_mac_82598EB: { - struct ixgbe_ring_feature *feature = adapter->ring_feature; - const int mask = feature[RING_F_RSS].mask; - reg_idx = reg_idx & mask; - } - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - default: - break; - } - - srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(reg_idx)); - - srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; - srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK; - if (adapter->num_vfs) - srrctl |= IXGBE_SRRCTL_DROP_EN; - - srrctl |= (IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & - IXGBE_SRRCTL_BSIZEHDR_MASK; - - if (ring_is_ps_enabled(rx_ring)) { -#if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER - srrctl |= IXGBE_MAX_RXBUFFER >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; -#else - srrctl |= (PAGE_SIZE / 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; -#endif - srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; - } else { - srrctl |= ALIGN(rx_ring->rx_buf_len, 1024) >> - IXGBE_SRRCTL_BSIZEPKT_SHIFT; - srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; - } - - IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(reg_idx), srrctl); -} - -static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D, - 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE, - 0x6A3E67EA, 0x14364D17, 0x3BED200D}; - u32 mrqc = 0, reta = 0; - u32 rxcsum; - int i, j; - u8 tcs = netdev_get_num_tc(adapter->netdev); - int maxq = adapter->ring_feature[RING_F_RSS].indices; - - if (tcs) - maxq = min(maxq, adapter->num_tx_queues / tcs); - - /* Fill out hash function seeds */ - for (i = 0; i < 10; i++) - IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]); - - /* Fill out redirection table */ - for (i = 0, j = 0; i < 128; i++, j++) { - if (j == maxq) - j = 0; - /* reta = 4-byte sliding window of - * 0x00..(indices-1)(indices-1)00..etc. */ - reta = (reta << 8) | (j * 0x11); - if ((i & 3) == 3) - IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); - } - - /* Disable indicating checksum in descriptor, enables RSS hash */ - rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); - rxcsum |= IXGBE_RXCSUM_PCSD; - IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); - - if (adapter->hw.mac.type == ixgbe_mac_82598EB && - (adapter->flags & IXGBE_FLAG_RSS_ENABLED)) { - mrqc = IXGBE_MRQC_RSSEN; - } else { - int mask = adapter->flags & (IXGBE_FLAG_RSS_ENABLED - | IXGBE_FLAG_SRIOV_ENABLED); - - switch (mask) { - case (IXGBE_FLAG_RSS_ENABLED): - if (!tcs) - mrqc = IXGBE_MRQC_RSSEN; - else if (tcs <= 4) - mrqc = IXGBE_MRQC_RTRSS4TCEN; - else - mrqc = IXGBE_MRQC_RTRSS8TCEN; - break; - case (IXGBE_FLAG_SRIOV_ENABLED): - mrqc = IXGBE_MRQC_VMDQEN; - break; - default: - break; - } - } - - /* Perform hash on these packet types */ - mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4 - | IXGBE_MRQC_RSS_FIELD_IPV4_TCP - | IXGBE_MRQC_RSS_FIELD_IPV6 - | IXGBE_MRQC_RSS_FIELD_IPV6_TCP; - - IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); -} - -/** - * ixgbe_configure_rscctl - enable RSC for the indicated ring - * @adapter: address of board private structure - * @index: index of ring to set - **/ -static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter, - struct ixgbe_ring *ring) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 rscctrl; - int rx_buf_len; - u8 reg_idx = ring->reg_idx; - - if (!ring_is_rsc_enabled(ring)) - return; - - rx_buf_len = ring->rx_buf_len; - rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx)); - rscctrl |= IXGBE_RSCCTL_RSCEN; - /* - * we must limit the number of descriptors so that the - * total size of max desc * buf_len is not greater - * than 65535 - */ - if (ring_is_ps_enabled(ring)) { -#if (MAX_SKB_FRAGS > 16) - rscctrl |= IXGBE_RSCCTL_MAXDESC_16; -#elif (MAX_SKB_FRAGS > 8) - rscctrl |= IXGBE_RSCCTL_MAXDESC_8; -#elif (MAX_SKB_FRAGS > 4) - rscctrl |= IXGBE_RSCCTL_MAXDESC_4; -#else - rscctrl |= IXGBE_RSCCTL_MAXDESC_1; -#endif - } else { - if (rx_buf_len < IXGBE_RXBUFFER_4096) - rscctrl |= IXGBE_RSCCTL_MAXDESC_16; - else if (rx_buf_len < IXGBE_RXBUFFER_8192) - rscctrl |= IXGBE_RSCCTL_MAXDESC_8; - else - rscctrl |= IXGBE_RSCCTL_MAXDESC_4; - } - IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl); -} - -/** - * ixgbe_set_uta - Set unicast filter table address - * @adapter: board private structure - * - * The unicast table address is a register array of 32-bit registers. - * The table is meant to be used in a way similar to how the MTA is used - * however due to certain limitations in the hardware it is necessary to - * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous - * enable bit to allow vlan tag stripping when promiscuous mode is enabled - **/ -static void ixgbe_set_uta(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - int i; - - /* The UTA table only exists on 82599 hardware and newer */ - if (hw->mac.type < ixgbe_mac_82599EB) - return; - - /* we only need to do this if VMDq is enabled */ - if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) - return; - - for (i = 0; i < 128; i++) - IXGBE_WRITE_REG(hw, IXGBE_UTA(i), ~0); -} - -#define IXGBE_MAX_RX_DESC_POLL 10 -static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter, - struct ixgbe_ring *ring) -{ - struct ixgbe_hw *hw = &adapter->hw; - int wait_loop = IXGBE_MAX_RX_DESC_POLL; - u32 rxdctl; - u8 reg_idx = ring->reg_idx; - - /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */ - if (hw->mac.type == ixgbe_mac_82598EB && - !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) - return; - - do { - usleep_range(1000, 2000); - rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); - } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE)); - - if (!wait_loop) { - e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within " - "the polling period\n", reg_idx); - } -} - -void ixgbe_disable_rx_queue(struct ixgbe_adapter *adapter, - struct ixgbe_ring *ring) -{ - struct ixgbe_hw *hw = &adapter->hw; - int wait_loop = IXGBE_MAX_RX_DESC_POLL; - u32 rxdctl; - u8 reg_idx = ring->reg_idx; - - rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); - rxdctl &= ~IXGBE_RXDCTL_ENABLE; - - /* write value back with RXDCTL.ENABLE bit cleared */ - IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); - - if (hw->mac.type == ixgbe_mac_82598EB && - !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) - return; - - /* the hardware may take up to 100us to really disable the rx queue */ - do { - udelay(10); - rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); - } while (--wait_loop && (rxdctl & IXGBE_RXDCTL_ENABLE)); - - if (!wait_loop) { - e_err(drv, "RXDCTL.ENABLE on Rx queue %d not cleared within " - "the polling period\n", reg_idx); - } -} - -void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter, - struct ixgbe_ring *ring) -{ - struct ixgbe_hw *hw = &adapter->hw; - u64 rdba = ring->dma; - u32 rxdctl; - u8 reg_idx = ring->reg_idx; - - /* disable queue to avoid issues while updating state */ - rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); - ixgbe_disable_rx_queue(adapter, ring); - - IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32))); - IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32)); - IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx), - ring->count * sizeof(union ixgbe_adv_rx_desc)); - IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0); - IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0); - ring->tail = hw->hw_addr + IXGBE_RDT(reg_idx); - - ixgbe_configure_srrctl(adapter, ring); - ixgbe_configure_rscctl(adapter, ring); - - /* If operating in IOV mode set RLPML for X540 */ - if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && - hw->mac.type == ixgbe_mac_X540) { - rxdctl &= ~IXGBE_RXDCTL_RLPMLMASK; - rxdctl |= ((ring->netdev->mtu + ETH_HLEN + - ETH_FCS_LEN + VLAN_HLEN) | IXGBE_RXDCTL_RLPML_EN); - } - - if (hw->mac.type == ixgbe_mac_82598EB) { - /* - * enable cache line friendly hardware writes: - * PTHRESH=32 descriptors (half the internal cache), - * this also removes ugly rx_no_buffer_count increment - * HTHRESH=4 descriptors (to minimize latency on fetch) - * WTHRESH=8 burst writeback up to two cache lines - */ - rxdctl &= ~0x3FFFFF; - rxdctl |= 0x080420; - } - - /* enable receive descriptor ring */ - rxdctl |= IXGBE_RXDCTL_ENABLE; - IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); - - ixgbe_rx_desc_queue_enable(adapter, ring); - ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring)); -} - -static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - int p; - - /* PSRTYPE must be initialized in non 82598 adapters */ - u32 psrtype = IXGBE_PSRTYPE_TCPHDR | - IXGBE_PSRTYPE_UDPHDR | - IXGBE_PSRTYPE_IPV4HDR | - IXGBE_PSRTYPE_L2HDR | - IXGBE_PSRTYPE_IPV6HDR; - - if (hw->mac.type == ixgbe_mac_82598EB) - return; - - if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) - psrtype |= (adapter->num_rx_queues_per_pool << 29); - - for (p = 0; p < adapter->num_rx_pools; p++) - IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(adapter->num_vfs + p), - psrtype); -} - -static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 gcr_ext; - u32 vt_reg_bits; - u32 reg_offset, vf_shift; - u32 vmdctl; - - if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) - return; - - vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); - vt_reg_bits = IXGBE_VMD_CTL_VMDQ_EN | IXGBE_VT_CTL_REPLEN; - vt_reg_bits |= (adapter->num_vfs << IXGBE_VT_CTL_POOL_SHIFT); - IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl | vt_reg_bits); - - vf_shift = adapter->num_vfs % 32; - reg_offset = (adapter->num_vfs > 32) ? 1 : 0; - - /* Enable only the PF's pool for Tx/Rx */ - IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), (1 << vf_shift)); - IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), 0); - IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), (1 << vf_shift)); - IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), 0); - IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); - - /* Map PF MAC address in RAR Entry 0 to first pool following VFs */ - hw->mac.ops.set_vmdq(hw, 0, adapter->num_vfs); - - /* - * Set up VF register offsets for selected VT Mode, - * i.e. 32 or 64 VFs for SR-IOV - */ - gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT); - gcr_ext |= IXGBE_GCR_EXT_MSIX_EN; - gcr_ext |= IXGBE_GCR_EXT_VT_MODE_64; - IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext); - - /* enable Tx loopback for VF/PF communication */ - IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); - /* Enable MAC Anti-Spoofing */ - hw->mac.ops.set_mac_anti_spoofing(hw, - (adapter->antispoofing_enabled = - (adapter->num_vfs != 0)), - adapter->num_vfs); -} - -static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - struct net_device *netdev = adapter->netdev; - int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; - int rx_buf_len; - struct ixgbe_ring *rx_ring; - int i; - u32 mhadd, hlreg0; - - /* Decide whether to use packet split mode or not */ - /* On by default */ - adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; - - /* Do not use packet split if we're in SR-IOV Mode */ - if (adapter->num_vfs) - adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; - - /* Disable packet split due to 82599 erratum #45 */ - if (hw->mac.type == ixgbe_mac_82599EB) - adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; - - /* Set the RX buffer length according to the mode */ - if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { - rx_buf_len = IXGBE_RX_HDR_SIZE; - } else { - if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) && - (netdev->mtu <= ETH_DATA_LEN)) - rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE; - else - rx_buf_len = ALIGN(max_frame + VLAN_HLEN, 1024); - } - -#ifdef IXGBE_FCOE - /* adjust max frame to be able to do baby jumbo for FCoE */ - if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) && - (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE)) - max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE; - -#endif /* IXGBE_FCOE */ - mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); - if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { - mhadd &= ~IXGBE_MHADD_MFS_MASK; - mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; - - IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); - } - - hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); - /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */ - hlreg0 |= IXGBE_HLREG0_JUMBOEN; - IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); - - /* - * 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++) { - rx_ring = adapter->rx_ring[i]; - rx_ring->rx_buf_len = rx_buf_len; - - if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) - set_ring_ps_enabled(rx_ring); - else - clear_ring_ps_enabled(rx_ring); - - if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) - set_ring_rsc_enabled(rx_ring); - else - clear_ring_rsc_enabled(rx_ring); - -#ifdef IXGBE_FCOE - if (netdev->features & NETIF_F_FCOE_MTU) { - struct ixgbe_ring_feature *f; - f = &adapter->ring_feature[RING_F_FCOE]; - if ((i >= f->mask) && (i < f->mask + f->indices)) { - clear_ring_ps_enabled(rx_ring); - if (rx_buf_len < IXGBE_FCOE_JUMBO_FRAME_SIZE) - rx_ring->rx_buf_len = - IXGBE_FCOE_JUMBO_FRAME_SIZE; - } else if (!ring_is_rsc_enabled(rx_ring) && - !ring_is_ps_enabled(rx_ring)) { - rx_ring->rx_buf_len = - IXGBE_FCOE_JUMBO_FRAME_SIZE; - } - } -#endif /* IXGBE_FCOE */ - } -} - -static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); - - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - /* - * For VMDq support of different descriptor types or - * buffer sizes through the use of multiple SRRCTL - * registers, RDRXCTL.MVMEN must be set to 1 - * - * also, the manual doesn't mention it clearly but DCA hints - * will only use queue 0's tags unless this bit is set. Side - * effects of setting this bit are only that SRRCTL must be - * fully programmed [0..15] - */ - rdrxctl |= IXGBE_RDRXCTL_MVMEN; - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - /* Disable RSC for ACK packets */ - IXGBE_WRITE_REG(hw, IXGBE_RSCDBU, - (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU))); - rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE; - /* hardware requires some bits to be set by default */ - rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX); - rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP; - break; - default: - /* We should do nothing since we don't know this hardware */ - return; - } - - IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); -} - -/** - * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset - * @adapter: board private structure - * - * Configure the Rx unit of the MAC after a reset. - **/ -static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - int i; - u32 rxctrl; - - /* disable receives while setting up the descriptors */ - rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); - IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); - - ixgbe_setup_psrtype(adapter); - ixgbe_setup_rdrxctl(adapter); - - /* Program registers for the distribution of queues */ - ixgbe_setup_mrqc(adapter); - - ixgbe_set_uta(adapter); - - /* set_rx_buffer_len must be called before ring initialization */ - ixgbe_set_rx_buffer_len(adapter); - - /* - * 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++) - ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]); - - /* disable drop enable for 82598 parts */ - if (hw->mac.type == ixgbe_mac_82598EB) - rxctrl |= IXGBE_RXCTRL_DMBYPS; - - /* enable all receives */ - rxctrl |= IXGBE_RXCTRL_RXEN; - hw->mac.ops.enable_rx_dma(hw, rxctrl); -} - -static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - struct ixgbe_hw *hw = &adapter->hw; - int pool_ndx = adapter->num_vfs; - - /* add VID to filter table */ - hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, true); - set_bit(vid, adapter->active_vlans); -} - -static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - struct ixgbe_hw *hw = &adapter->hw; - int pool_ndx = adapter->num_vfs; - - /* remove VID from filter table */ - hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, false); - clear_bit(vid, adapter->active_vlans); -} - -/** - * ixgbe_vlan_filter_disable - helper to disable hw vlan filtering - * @adapter: driver data - */ -static void ixgbe_vlan_filter_disable(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 vlnctrl; - - vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); - vlnctrl &= ~(IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN); - IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); -} - -/** - * ixgbe_vlan_filter_enable - helper to enable hw vlan filtering - * @adapter: driver data - */ -static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 vlnctrl; - - vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); - vlnctrl |= IXGBE_VLNCTRL_VFE; - vlnctrl &= ~IXGBE_VLNCTRL_CFIEN; - IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); -} - -/** - * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping - * @adapter: driver data - */ -static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 vlnctrl; - int i, j; - - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); - vlnctrl &= ~IXGBE_VLNCTRL_VME; - IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - for (i = 0; i < adapter->num_rx_queues; i++) { - j = adapter->rx_ring[i]->reg_idx; - vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); - vlnctrl &= ~IXGBE_RXDCTL_VME; - IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); - } - break; - default: - break; - } -} - -/** - * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping - * @adapter: driver data - */ -static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 vlnctrl; - int i, j; - - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); - vlnctrl |= IXGBE_VLNCTRL_VME; - IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - for (i = 0; i < adapter->num_rx_queues; i++) { - j = adapter->rx_ring[i]->reg_idx; - vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); - vlnctrl |= IXGBE_RXDCTL_VME; - IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); - } - break; - default: - break; - } -} - -static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) -{ - u16 vid; - - ixgbe_vlan_rx_add_vid(adapter->netdev, 0); - - for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) - ixgbe_vlan_rx_add_vid(adapter->netdev, vid); -} - -/** - * ixgbe_write_uc_addr_list - write unicast addresses to RAR table - * @netdev: network interface device structure - * - * Writes unicast address list to the RAR table. - * Returns: -ENOMEM on failure/insufficient address space - * 0 on no addresses written - * X on writing X addresses to the RAR table - **/ -static int ixgbe_write_uc_addr_list(struct net_device *netdev) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - struct ixgbe_hw *hw = &adapter->hw; - unsigned int vfn = adapter->num_vfs; - unsigned int rar_entries = IXGBE_MAX_PF_MACVLANS; - int count = 0; - - /* return ENOMEM indicating insufficient memory for addresses */ - if (netdev_uc_count(netdev) > rar_entries) - return -ENOMEM; - - if (!netdev_uc_empty(netdev) && rar_entries) { - struct netdev_hw_addr *ha; - /* return error if we do not support writing to RAR table */ - if (!hw->mac.ops.set_rar) - return -ENOMEM; - - netdev_for_each_uc_addr(ha, netdev) { - if (!rar_entries) - break; - hw->mac.ops.set_rar(hw, rar_entries--, ha->addr, - vfn, IXGBE_RAH_AV); - count++; - } - } - /* write the addresses in reverse order to avoid write combining */ - for (; rar_entries > 0 ; rar_entries--) - hw->mac.ops.clear_rar(hw, rar_entries); - - return count; -} - -/** - * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set - * @netdev: network interface device structure - * - * The set_rx_method entry point is called whenever the unicast/multicast - * address list or the network interface flags are updated. This routine is - * responsible for configuring the hardware for proper unicast, multicast and - * promiscuous mode. - **/ -void ixgbe_set_rx_mode(struct net_device *netdev) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - struct ixgbe_hw *hw = &adapter->hw; - u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE; - int count; - - /* Check for Promiscuous and All Multicast modes */ - - fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); - - /* set all bits that we expect to always be set */ - fctrl |= IXGBE_FCTRL_BAM; - fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */ - fctrl |= IXGBE_FCTRL_PMCF; - - /* clear the bits we are changing the status of */ - fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); - - if (netdev->flags & IFF_PROMISC) { - hw->addr_ctrl.user_set_promisc = true; - fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); - vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_MPE); - /* don't hardware filter vlans in promisc mode */ - ixgbe_vlan_filter_disable(adapter); - } else { - if (netdev->flags & IFF_ALLMULTI) { - fctrl |= IXGBE_FCTRL_MPE; - vmolr |= IXGBE_VMOLR_MPE; - } else { - /* - * Write addresses to the MTA, if the attempt fails - * then we should just turn on promiscuous mode so - * that we can at least receive multicast traffic - */ - hw->mac.ops.update_mc_addr_list(hw, netdev); - vmolr |= IXGBE_VMOLR_ROMPE; - } - ixgbe_vlan_filter_enable(adapter); - hw->addr_ctrl.user_set_promisc = false; - /* - * Write addresses to available RAR registers, if there is not - * sufficient space to store all the addresses then enable - * unicast promiscuous mode - */ - count = ixgbe_write_uc_addr_list(netdev); - if (count < 0) { - fctrl |= IXGBE_FCTRL_UPE; - vmolr |= IXGBE_VMOLR_ROPE; - } - } - - if (adapter->num_vfs) { - ixgbe_restore_vf_multicasts(adapter); - vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(adapter->num_vfs)) & - ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE | - IXGBE_VMOLR_ROPE); - IXGBE_WRITE_REG(hw, IXGBE_VMOLR(adapter->num_vfs), vmolr); - } - - IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); - - if (netdev->features & NETIF_F_HW_VLAN_RX) - ixgbe_vlan_strip_enable(adapter); - else - ixgbe_vlan_strip_disable(adapter); -} - -static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter) -{ - int q_idx; - struct ixgbe_q_vector *q_vector; - int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - - /* legacy and MSI only use one vector */ - if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) - q_vectors = 1; - - for (q_idx = 0; q_idx < q_vectors; q_idx++) { - struct napi_struct *napi; - q_vector = adapter->q_vector[q_idx]; - napi = &q_vector->napi; - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { - if (!q_vector->rx.count || !q_vector->tx.count) { - if (q_vector->tx.count == 1) - napi->poll = &ixgbe_clean_txonly; - else if (q_vector->rx.count == 1) - napi->poll = &ixgbe_clean_rxonly; - } - } - - napi_enable(napi); - } -} - -static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) -{ - int q_idx; - struct ixgbe_q_vector *q_vector; - int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - - /* legacy and MSI only use one vector */ - if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) - q_vectors = 1; - - for (q_idx = 0; q_idx < q_vectors; q_idx++) { - q_vector = adapter->q_vector[q_idx]; - napi_disable(&q_vector->napi); - } -} - -#ifdef CONFIG_IXGBE_DCB -/* - * ixgbe_configure_dcb - Configure DCB hardware - * @adapter: ixgbe adapter struct - * - * This is called by the driver on open to configure the DCB hardware. - * This is also called by the gennetlink interface when reconfiguring - * the DCB state. - */ -static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN; - - if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) { - if (hw->mac.type == ixgbe_mac_82598EB) - netif_set_gso_max_size(adapter->netdev, 65536); - return; - } - - if (hw->mac.type == ixgbe_mac_82598EB) - netif_set_gso_max_size(adapter->netdev, 32768); - - - /* Enable VLAN tag insert/strip */ - adapter->netdev->features |= NETIF_F_HW_VLAN_RX; - - hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true); - - /* reconfigure the hardware */ - if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) { -#ifdef CONFIG_FCOE - if (adapter->netdev->features & NETIF_F_FCOE_MTU) - max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE); -#endif - ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, - DCB_TX_CONFIG); - ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, - DCB_RX_CONFIG); - ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg); - } else { - struct net_device *dev = adapter->netdev; - - if (adapter->ixgbe_ieee_ets) - dev->dcbnl_ops->ieee_setets(dev, - adapter->ixgbe_ieee_ets); - if (adapter->ixgbe_ieee_pfc) - dev->dcbnl_ops->ieee_setpfc(dev, - adapter->ixgbe_ieee_pfc); - } - - /* Enable RSS Hash per TC */ - if (hw->mac.type != ixgbe_mac_82598EB) { - int i; - u32 reg = 0; - - for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { - u8 msb = 0; - u8 cnt = adapter->netdev->tc_to_txq[i].count; - - while (cnt >>= 1) - msb++; - - reg |= msb << IXGBE_RQTC_SHIFT_TC(i); - } - IXGBE_WRITE_REG(hw, IXGBE_RQTC, reg); - } -} - -#endif - -static void ixgbe_configure_pb(struct ixgbe_adapter *adapter) -{ - int hdrm = 0; - int num_tc = netdev_get_num_tc(adapter->netdev); - struct ixgbe_hw *hw = &adapter->hw; - - if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE || - adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) - hdrm = 64 << adapter->fdir_pballoc; - - hw->mac.ops.set_rxpba(&adapter->hw, num_tc, hdrm, PBA_STRATEGY_EQUAL); -} - -static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - struct hlist_node *node, *node2; - struct ixgbe_fdir_filter *filter; - - spin_lock(&adapter->fdir_perfect_lock); - - if (!hlist_empty(&adapter->fdir_filter_list)) - ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask); - - hlist_for_each_entry_safe(filter, node, node2, - &adapter->fdir_filter_list, fdir_node) { - ixgbe_fdir_write_perfect_filter_82599(hw, - &filter->filter, - filter->sw_idx, - (filter->action == IXGBE_FDIR_DROP_QUEUE) ? - IXGBE_FDIR_DROP_QUEUE : - adapter->rx_ring[filter->action]->reg_idx); - } - - spin_unlock(&adapter->fdir_perfect_lock); -} - -static void ixgbe_configure(struct ixgbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct ixgbe_hw *hw = &adapter->hw; - int i; - - ixgbe_configure_pb(adapter); -#ifdef CONFIG_IXGBE_DCB - ixgbe_configure_dcb(adapter); -#endif - - ixgbe_set_rx_mode(netdev); - ixgbe_restore_vlan(adapter); - -#ifdef IXGBE_FCOE - if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) - ixgbe_configure_fcoe(adapter); - -#endif /* IXGBE_FCOE */ - if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { - for (i = 0; i < adapter->num_tx_queues; i++) - adapter->tx_ring[i]->atr_sample_rate = - adapter->atr_sample_rate; - ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc); - } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) { - ixgbe_init_fdir_perfect_82599(&adapter->hw, - adapter->fdir_pballoc); - ixgbe_fdir_filter_restore(adapter); - } - ixgbe_configure_virtualization(adapter); - - ixgbe_configure_tx(adapter); - ixgbe_configure_rx(adapter); -} - -static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw) -{ - switch (hw->phy.type) { - case ixgbe_phy_sfp_avago: - case ixgbe_phy_sfp_ftl: - case ixgbe_phy_sfp_intel: - case ixgbe_phy_sfp_unknown: - case ixgbe_phy_sfp_passive_tyco: - case ixgbe_phy_sfp_passive_unknown: - case ixgbe_phy_sfp_active_unknown: - case ixgbe_phy_sfp_ftl_active: - return true; - default: - return false; - } -} - -/** - * ixgbe_sfp_link_config - set up SFP+ link - * @adapter: pointer to private adapter struct - **/ -static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter) -{ - /* - * We are assuming the worst case scenerio here, and that - * is that an SFP was inserted/removed after the reset - * but before SFP detection was enabled. As such the best - * solution is to just start searching as soon as we start - */ - if (adapter->hw.mac.type == ixgbe_mac_82598EB) - adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; - - adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; -} - -/** - * ixgbe_non_sfp_link_config - set up non-SFP+ link - * @hw: pointer to private hardware struct - * - * Returns 0 on success, negative on failure - **/ -static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw) -{ - u32 autoneg; - bool negotiation, link_up = false; - u32 ret = IXGBE_ERR_LINK_SETUP; - - if (hw->mac.ops.check_link) - ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false); - - if (ret) - goto link_cfg_out; - - autoneg = hw->phy.autoneg_advertised; - if ((!autoneg) && (hw->mac.ops.get_link_capabilities)) - ret = hw->mac.ops.get_link_capabilities(hw, &autoneg, - &negotiation); - if (ret) - goto link_cfg_out; - - if (hw->mac.ops.setup_link) - ret = hw->mac.ops.setup_link(hw, autoneg, negotiation, link_up); -link_cfg_out: - return ret; -} - -static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 gpie = 0; - - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { - gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT | - IXGBE_GPIE_OCD; - gpie |= IXGBE_GPIE_EIAME; - /* - * use EIAM to auto-mask when MSI-X interrupt is asserted - * this saves a register write for every interrupt - */ - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - default: - IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF); - IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF); - break; - } - } else { - /* legacy interrupts, use EIAM to auto-mask when reading EICR, - * specifically only auto mask tx and rx interrupts */ - IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); - } - - /* XXX: to interrupt immediately for EICS writes, enable this */ - /* gpie |= IXGBE_GPIE_EIMEN; */ - - if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { - gpie &= ~IXGBE_GPIE_VTMODE_MASK; - gpie |= IXGBE_GPIE_VTMODE_64; - } - - /* Enable fan failure interrupt */ - if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) - gpie |= IXGBE_SDP1_GPIEN; - - if (hw->mac.type == ixgbe_mac_82599EB) { - gpie |= IXGBE_SDP1_GPIEN; - gpie |= IXGBE_SDP2_GPIEN; - } - - IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); -} - -static int ixgbe_up_complete(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - int err; - u32 ctrl_ext; - - ixgbe_get_hw_control(adapter); - ixgbe_setup_gpie(adapter); - - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) - ixgbe_configure_msix(adapter); - else - ixgbe_configure_msi_and_legacy(adapter); - - /* enable the optics for both mult-speed fiber and 82599 SFP+ fiber */ - if (hw->mac.ops.enable_tx_laser && - ((hw->phy.multispeed_fiber) || - ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) && - (hw->mac.type == ixgbe_mac_82599EB)))) - hw->mac.ops.enable_tx_laser(hw); - - clear_bit(__IXGBE_DOWN, &adapter->state); - ixgbe_napi_enable_all(adapter); - - if (ixgbe_is_sfp(hw)) { - ixgbe_sfp_link_config(adapter); - } else { - err = ixgbe_non_sfp_link_config(hw); - if (err) - e_err(probe, "link_config FAILED %d\n", err); - } - - /* clear any pending interrupts, may auto mask */ - IXGBE_READ_REG(hw, IXGBE_EICR); - ixgbe_irq_enable(adapter, true, true); - - /* - * If this adapter has a fan, check to see if we had a failure - * before we enabled the interrupt. - */ - if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { - u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); - if (esdp & IXGBE_ESDP_SDP1) - e_crit(drv, "Fan has stopped, replace the adapter\n"); - } - - /* enable transmits */ - netif_tx_start_all_queues(adapter->netdev); - - /* bring the link up in the watchdog, this could race with our first - * link up interrupt but shouldn't be a problem */ - adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; - adapter->link_check_timeout = jiffies; - mod_timer(&adapter->service_timer, jiffies); - - /* Set PF Reset Done bit so PF/VF Mail Ops can work */ - ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); - ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD; - IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); - - return 0; -} - -void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) -{ - WARN_ON(in_interrupt()); - /* put off any impending NetWatchDogTimeout */ - adapter->netdev->trans_start = jiffies; - - while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) - usleep_range(1000, 2000); - ixgbe_down(adapter); - /* - * If SR-IOV enabled then wait a bit before bringing the adapter - * back up to give the VFs time to respond to the reset. The - * two second wait is based upon the watchdog timer cycle in - * the VF driver. - */ - if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) - msleep(2000); - ixgbe_up(adapter); - clear_bit(__IXGBE_RESETTING, &adapter->state); -} - -int ixgbe_up(struct ixgbe_adapter *adapter) -{ - /* hardware has been reset, we need to reload some things */ - ixgbe_configure(adapter); - - return ixgbe_up_complete(adapter); -} - -void ixgbe_reset(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - int err; - - /* lock SFP init bit to prevent race conditions with the watchdog */ - while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) - usleep_range(1000, 2000); - - /* clear all SFP and link config related flags while holding SFP_INIT */ - adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP | - IXGBE_FLAG2_SFP_NEEDS_RESET); - adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; - - err = hw->mac.ops.init_hw(hw); - switch (err) { - case 0: - case IXGBE_ERR_SFP_NOT_PRESENT: - case IXGBE_ERR_SFP_NOT_SUPPORTED: - break; - case IXGBE_ERR_MASTER_REQUESTS_PENDING: - e_dev_err("master disable timed out\n"); - break; - case IXGBE_ERR_EEPROM_VERSION: - /* We are running on a pre-production device, log a warning */ - e_dev_warn("This device is a pre-production adapter/LOM. " - "Please be aware there may be issuesassociated with " - "your hardware. If you are experiencing problems " - "please contact your Intel or hardware " - "representative who provided you with this " - "hardware.\n"); - break; - default: - e_dev_err("Hardware Error: %d\n", err); - } - - clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); - - /* reprogram the RAR[0] in case user changed it. */ - hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs, - IXGBE_RAH_AV); -} - -/** - * ixgbe_clean_rx_ring - Free Rx Buffers per Queue - * @rx_ring: ring to free buffers from - **/ -static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring) -{ - struct device *dev = rx_ring->dev; - unsigned long size; - u16 i; - - /* ring already cleared, nothing to do */ - if (!rx_ring->rx_buffer_info) - return; - - /* Free all the Rx ring sk_buffs */ - for (i = 0; i < rx_ring->count; i++) { - struct ixgbe_rx_buffer *rx_buffer_info; - - rx_buffer_info = &rx_ring->rx_buffer_info[i]; - if (rx_buffer_info->dma) { - dma_unmap_single(rx_ring->dev, rx_buffer_info->dma, - rx_ring->rx_buf_len, - DMA_FROM_DEVICE); - rx_buffer_info->dma = 0; - } - if (rx_buffer_info->skb) { - struct sk_buff *skb = rx_buffer_info->skb; - rx_buffer_info->skb = NULL; - do { - struct sk_buff *this = skb; - if (IXGBE_RSC_CB(this)->delay_unmap) { - dma_unmap_single(dev, - IXGBE_RSC_CB(this)->dma, - rx_ring->rx_buf_len, - DMA_FROM_DEVICE); - IXGBE_RSC_CB(this)->dma = 0; - IXGBE_RSC_CB(skb)->delay_unmap = false; - } - skb = skb->prev; - dev_kfree_skb(this); - } while (skb); - } - if (!rx_buffer_info->page) - continue; - if (rx_buffer_info->page_dma) { - dma_unmap_page(dev, rx_buffer_info->page_dma, - PAGE_SIZE / 2, DMA_FROM_DEVICE); - rx_buffer_info->page_dma = 0; - } - put_page(rx_buffer_info->page); - rx_buffer_info->page = NULL; - rx_buffer_info->page_offset = 0; - } - - size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; - memset(rx_ring->rx_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; -} - -/** - * ixgbe_clean_tx_ring - Free Tx Buffers - * @tx_ring: ring to be cleaned - **/ -static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring) -{ - struct ixgbe_tx_buffer *tx_buffer_info; - unsigned long size; - u16 i; - - /* ring already cleared, nothing to do */ - if (!tx_ring->tx_buffer_info) - return; - - /* Free all the Tx ring sk_buffs */ - for (i = 0; i < tx_ring->count; i++) { - tx_buffer_info = &tx_ring->tx_buffer_info[i]; - ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info); - } - - size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; - memset(tx_ring->tx_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; -} - -/** - * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues - * @adapter: board private structure - **/ -static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_rx_queues; i++) - ixgbe_clean_rx_ring(adapter->rx_ring[i]); -} - -/** - * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues - * @adapter: board private structure - **/ -static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_tx_queues; i++) - ixgbe_clean_tx_ring(adapter->tx_ring[i]); -} - -static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter) -{ - struct hlist_node *node, *node2; - struct ixgbe_fdir_filter *filter; - - spin_lock(&adapter->fdir_perfect_lock); - - hlist_for_each_entry_safe(filter, node, node2, - &adapter->fdir_filter_list, fdir_node) { - hlist_del(&filter->fdir_node); - kfree(filter); - } - adapter->fdir_filter_count = 0; - - spin_unlock(&adapter->fdir_perfect_lock); -} - -void ixgbe_down(struct ixgbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct ixgbe_hw *hw = &adapter->hw; - u32 rxctrl; - int i; - int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - - /* signal that we are down to the interrupt handler */ - set_bit(__IXGBE_DOWN, &adapter->state); - - /* disable receives */ - rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); - IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); - - /* disable all enabled rx queues */ - for (i = 0; i < adapter->num_rx_queues; i++) - /* this call also flushes the previous write */ - ixgbe_disable_rx_queue(adapter, adapter->rx_ring[i]); - - usleep_range(10000, 20000); - - netif_tx_stop_all_queues(netdev); - - /* call carrier off first to avoid false dev_watchdog timeouts */ - netif_carrier_off(netdev); - netif_tx_disable(netdev); - - ixgbe_irq_disable(adapter); - - ixgbe_napi_disable_all(adapter); - - adapter->flags2 &= ~(IXGBE_FLAG2_FDIR_REQUIRES_REINIT | - IXGBE_FLAG2_RESET_REQUESTED); - adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; - - del_timer_sync(&adapter->service_timer); - - /* disable receive for all VFs and wait one second */ - if (adapter->num_vfs) { - /* ping all the active vfs to let them know we are going down */ - ixgbe_ping_all_vfs(adapter); - - /* Disable all VFTE/VFRE TX/RX */ - ixgbe_disable_tx_rx(adapter); - - /* Mark all the VFs as inactive */ - for (i = 0 ; i < adapter->num_vfs; i++) - adapter->vfinfo[i].clear_to_send = 0; - } - - /* Cleanup the affinity_hint CPU mask memory and callback */ - for (i = 0; i < num_q_vectors; i++) { - struct ixgbe_q_vector *q_vector = adapter->q_vector[i]; - /* clear the affinity_mask in the IRQ descriptor */ - irq_set_affinity_hint(adapter->msix_entries[i]. vector, NULL); - /* release the CPU mask memory */ - free_cpumask_var(q_vector->affinity_mask); - } - - /* disable transmits in the hardware now that interrupts are off */ - for (i = 0; i < adapter->num_tx_queues; i++) { - u8 reg_idx = adapter->tx_ring[i]->reg_idx; - IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); - } - - /* Disable the Tx DMA engine on 82599 and X540 */ - switch (hw->mac.type) { - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, - (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) & - ~IXGBE_DMATXCTL_TE)); - break; - default: - break; - } - - if (!pci_channel_offline(adapter->pdev)) - ixgbe_reset(adapter); - - /* power down the optics for multispeed fiber and 82599 SFP+ fiber */ - if (hw->mac.ops.disable_tx_laser && - ((hw->phy.multispeed_fiber) || - ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) && - (hw->mac.type == ixgbe_mac_82599EB)))) - hw->mac.ops.disable_tx_laser(hw); - - ixgbe_clean_all_tx_rings(adapter); - ixgbe_clean_all_rx_rings(adapter); - -#ifdef CONFIG_IXGBE_DCA - /* since we reset the hardware DCA settings were cleared */ - ixgbe_setup_dca(adapter); -#endif -} - -/** - * ixgbe_poll - NAPI Rx polling callback - * @napi: structure for representing this polling device - * @budget: how many packets driver is allowed to clean - * - * This function is used for legacy and MSI, NAPI mode - **/ -static int ixgbe_poll(struct napi_struct *napi, int budget) -{ - struct ixgbe_q_vector *q_vector = - container_of(napi, struct ixgbe_q_vector, napi); - struct ixgbe_adapter *adapter = q_vector->adapter; - int tx_clean_complete, work_done = 0; - -#ifdef CONFIG_IXGBE_DCA - if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) - ixgbe_update_dca(q_vector); -#endif - - tx_clean_complete = ixgbe_clean_tx_irq(q_vector, adapter->tx_ring[0]); - ixgbe_clean_rx_irq(q_vector, adapter->rx_ring[0], &work_done, budget); - - if (!tx_clean_complete) - work_done = budget; - - /* If budget not fully consumed, exit the polling mode */ - if (work_done < budget) { - napi_complete(napi); - if (adapter->rx_itr_setting & 1) - ixgbe_set_itr(q_vector); - if (!test_bit(__IXGBE_DOWN, &adapter->state)) - ixgbe_irq_enable_queues(adapter, IXGBE_EIMS_RTX_QUEUE); - } - return work_done; -} - -/** - * ixgbe_tx_timeout - Respond to a Tx Hang - * @netdev: network interface device structure - **/ -static void ixgbe_tx_timeout(struct net_device *netdev) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - - /* Do the reset outside of interrupt context */ - ixgbe_tx_timeout_reset(adapter); -} - -/** - * ixgbe_set_rss_queues: Allocate queues for RSS - * @adapter: board private structure to initialize - * - * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try - * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU. - * - **/ -static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter) -{ - bool ret = false; - struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_RSS]; - - if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { - f->mask = 0xF; - adapter->num_rx_queues = f->indices; - adapter->num_tx_queues = f->indices; - ret = true; - } else { - ret = false; - } - - return ret; -} - -/** - * ixgbe_set_fdir_queues: Allocate queues for Flow Director - * @adapter: board private structure to initialize - * - * Flow Director is an advanced Rx filter, attempting to get Rx flows back - * to the original CPU that initiated the Tx session. This runs in addition - * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the - * Rx load across CPUs using RSS. - * - **/ -static inline bool ixgbe_set_fdir_queues(struct ixgbe_adapter *adapter) -{ - bool ret = false; - struct ixgbe_ring_feature *f_fdir = &adapter->ring_feature[RING_F_FDIR]; - - f_fdir->indices = min((int)num_online_cpus(), f_fdir->indices); - f_fdir->mask = 0; - - /* Flow Director must have RSS enabled */ - if ((adapter->flags & IXGBE_FLAG_RSS_ENABLED) && - (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)) { - adapter->num_tx_queues = f_fdir->indices; - adapter->num_rx_queues = f_fdir->indices; - ret = true; - } else { - adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; - } - return ret; -} - -#ifdef IXGBE_FCOE -/** - * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE) - * @adapter: board private structure to initialize - * - * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges. - * The ring feature mask is not used as a mask for FCoE, as it can take any 8 - * rx queues out of the max number of rx queues, instead, it is used as the - * index of the first rx queue used by FCoE. - * - **/ -static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter *adapter) -{ - struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE]; - - if (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) - return false; - - f->indices = min((int)num_online_cpus(), f->indices); - - adapter->num_rx_queues = 1; - adapter->num_tx_queues = 1; - - if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { - e_info(probe, "FCoE enabled with RSS\n"); - if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) - ixgbe_set_fdir_queues(adapter); - else - ixgbe_set_rss_queues(adapter); - } - - /* adding FCoE rx rings to the end */ - f->mask = adapter->num_rx_queues; - adapter->num_rx_queues += f->indices; - adapter->num_tx_queues += f->indices; - - return true; -} -#endif /* IXGBE_FCOE */ - -/* Artificial max queue cap per traffic class in DCB mode */ -#define DCB_QUEUE_CAP 8 - -#ifdef CONFIG_IXGBE_DCB -static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter) -{ - int per_tc_q, q, i, offset = 0; - struct net_device *dev = adapter->netdev; - int tcs = netdev_get_num_tc(dev); - - if (!tcs) - return false; - - /* Map queue offset and counts onto allocated tx queues */ - per_tc_q = min(dev->num_tx_queues / tcs, (unsigned int)DCB_QUEUE_CAP); - q = min((int)num_online_cpus(), per_tc_q); - - for (i = 0; i < tcs; i++) { - netdev_set_prio_tc_map(dev, i, i); - netdev_set_tc_queue(dev, i, q, offset); - offset += q; - } - - adapter->num_tx_queues = q * tcs; - adapter->num_rx_queues = q * tcs; - -#ifdef IXGBE_FCOE - /* FCoE enabled queues require special configuration indexed - * by feature specific indices and mask. Here we map FCoE - * indices onto the DCB queue pairs allowing FCoE to own - * configuration later. - */ - if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) { - int tc; - struct ixgbe_ring_feature *f = - &adapter->ring_feature[RING_F_FCOE]; - - tc = netdev_get_prio_tc_map(dev, adapter->fcoe.up); - f->indices = dev->tc_to_txq[tc].count; - f->mask = dev->tc_to_txq[tc].offset; - } -#endif - - return true; -} -#endif - -/** - * ixgbe_set_sriov_queues: Allocate queues for IOV use - * @adapter: board private structure to initialize - * - * IOV doesn't actually use anything, so just NAK the - * request for now and let the other queue routines - * figure out what to do. - */ -static inline bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter) -{ - return false; -} - -/* - * ixgbe_set_num_queues: Allocate queues for device, feature dependent - * @adapter: board private structure to initialize - * - * This is the top level queue allocation routine. The order here is very - * important, starting with the "most" number of features turned on at once, - * and ending with the smallest set of features. This way large combinations - * can be allocated if they're turned on, and smaller combinations are the - * fallthrough conditions. - * - **/ -static int ixgbe_set_num_queues(struct ixgbe_adapter *adapter) -{ - /* Start with base case */ - adapter->num_rx_queues = 1; - adapter->num_tx_queues = 1; - adapter->num_rx_pools = adapter->num_rx_queues; - adapter->num_rx_queues_per_pool = 1; - - if (ixgbe_set_sriov_queues(adapter)) - goto done; - -#ifdef CONFIG_IXGBE_DCB - if (ixgbe_set_dcb_queues(adapter)) - goto done; - -#endif -#ifdef IXGBE_FCOE - if (ixgbe_set_fcoe_queues(adapter)) - goto done; - -#endif /* IXGBE_FCOE */ - if (ixgbe_set_fdir_queues(adapter)) - goto done; - - if (ixgbe_set_rss_queues(adapter)) - goto done; - - /* fallback to base case */ - adapter->num_rx_queues = 1; - adapter->num_tx_queues = 1; - -done: - /* Notify the stack of the (possibly) reduced queue counts. */ - netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); - return netif_set_real_num_rx_queues(adapter->netdev, - adapter->num_rx_queues); -} - -static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter, - int vectors) -{ - int err, vector_threshold; - - /* We'll want at least 3 (vector_threshold): - * 1) TxQ[0] Cleanup - * 2) RxQ[0] Cleanup - * 3) Other (Link Status Change, etc.) - * 4) TCP Timer (optional) - */ - vector_threshold = MIN_MSIX_COUNT; - - /* The more we get, the more we will assign to Tx/Rx Cleanup - * for the separate queues...where Rx Cleanup >= Tx Cleanup. - * Right now, we simply care about how many we'll get; we'll - * set them up later while requesting irq's. - */ - while (vectors >= vector_threshold) { - err = pci_enable_msix(adapter->pdev, adapter->msix_entries, - vectors); - if (!err) /* Success in acquiring all requested vectors. */ - break; - else if (err < 0) - vectors = 0; /* Nasty failure, quit now */ - else /* err == number of vectors we should try again with */ - vectors = err; - } - - if (vectors < vector_threshold) { - /* Can't allocate enough MSI-X interrupts? Oh well. - * This just means we'll go with either a single MSI - * vector or fall back to legacy interrupts. - */ - netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev, - "Unable to allocate MSI-X interrupts\n"); - adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; - kfree(adapter->msix_entries); - adapter->msix_entries = NULL; - } else { - adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */ - /* - * Adjust for only the vectors we'll use, which is minimum - * of max_msix_q_vectors + NON_Q_VECTORS, or the number of - * vectors we were allocated. - */ - adapter->num_msix_vectors = min(vectors, - adapter->max_msix_q_vectors + NON_Q_VECTORS); - } -} - -/** - * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS - * @adapter: board private structure to initialize - * - * Cache the descriptor ring offsets for RSS to the assigned rings. - * - **/ -static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter) -{ - int i; - - if (!(adapter->flags & IXGBE_FLAG_RSS_ENABLED)) - return false; - - 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; - - return true; -} - -#ifdef CONFIG_IXGBE_DCB - -/* ixgbe_get_first_reg_idx - Return first register index associated with ring */ -static void ixgbe_get_first_reg_idx(struct ixgbe_adapter *adapter, u8 tc, - unsigned int *tx, unsigned int *rx) -{ - struct net_device *dev = adapter->netdev; - struct ixgbe_hw *hw = &adapter->hw; - u8 num_tcs = netdev_get_num_tc(dev); - - *tx = 0; - *rx = 0; - - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - *tx = tc << 2; - *rx = tc << 3; - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - if (num_tcs == 8) { - if (tc < 3) { - *tx = tc << 5; - *rx = tc << 4; - } else if (tc < 5) { - *tx = ((tc + 2) << 4); - *rx = tc << 4; - } else if (tc < num_tcs) { - *tx = ((tc + 8) << 3); - *rx = tc << 4; - } - } else if (num_tcs == 4) { - *rx = tc << 5; - switch (tc) { - case 0: - *tx = 0; - break; - case 1: - *tx = 64; - break; - case 2: - *tx = 96; - break; - case 3: - *tx = 112; - break; - default: - break; - } - } - break; - default: - break; - } -} - -/** - * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB - * @adapter: board private structure to initialize - * - * Cache the descriptor ring offsets for DCB to the assigned rings. - * - **/ -static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter) -{ - struct net_device *dev = adapter->netdev; - int i, j, k; - u8 num_tcs = netdev_get_num_tc(dev); - - if (!num_tcs) - return false; - - for (i = 0, k = 0; i < num_tcs; i++) { - unsigned int tx_s, rx_s; - u16 count = dev->tc_to_txq[i].count; - - ixgbe_get_first_reg_idx(adapter, i, &tx_s, &rx_s); - for (j = 0; j < count; j++, k++) { - adapter->tx_ring[k]->reg_idx = tx_s + j; - adapter->rx_ring[k]->reg_idx = rx_s + j; - adapter->tx_ring[k]->dcb_tc = i; - adapter->rx_ring[k]->dcb_tc = i; - } - } - - return true; -} -#endif - -/** - * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director - * @adapter: board private structure to initialize - * - * Cache the descriptor ring offsets for Flow Director to the assigned rings. - * - **/ -static inline bool ixgbe_cache_ring_fdir(struct ixgbe_adapter *adapter) -{ - int i; - bool ret = false; - - if ((adapter->flags & IXGBE_FLAG_RSS_ENABLED) && - (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)) { - 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; - ret = true; - } - - return ret; -} - -#ifdef IXGBE_FCOE -/** - * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE - * @adapter: board private structure to initialize - * - * Cache the descriptor ring offsets for FCoE mode to the assigned rings. - * - */ -static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter *adapter) -{ - struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE]; - int i; - u8 fcoe_rx_i = 0, fcoe_tx_i = 0; - - if (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) - return false; - - if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { - if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) - ixgbe_cache_ring_fdir(adapter); - else - ixgbe_cache_ring_rss(adapter); - - fcoe_rx_i = f->mask; - fcoe_tx_i = f->mask; - } - for (i = 0; i < f->indices; i++, fcoe_rx_i++, fcoe_tx_i++) { - adapter->rx_ring[f->mask + i]->reg_idx = fcoe_rx_i; - adapter->tx_ring[f->mask + i]->reg_idx = fcoe_tx_i; - } - return true; -} - -#endif /* IXGBE_FCOE */ -/** - * ixgbe_cache_ring_sriov - Descriptor ring to register mapping for sriov - * @adapter: board private structure to initialize - * - * SR-IOV doesn't use any descriptor rings but changes the default if - * no other mapping is used. - * - */ -static inline bool ixgbe_cache_ring_sriov(struct ixgbe_adapter *adapter) -{ - adapter->rx_ring[0]->reg_idx = adapter->num_vfs * 2; - adapter->tx_ring[0]->reg_idx = adapter->num_vfs * 2; - if (adapter->num_vfs) - return true; - else - return false; -} - -/** - * ixgbe_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. - * - * Note, the order the various feature calls is important. It must start with - * the "most" features enabled at the same time, then trickle down to the - * least amount of features turned on at once. - **/ -static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter) -{ - /* start with default case */ - adapter->rx_ring[0]->reg_idx = 0; - adapter->tx_ring[0]->reg_idx = 0; - - if (ixgbe_cache_ring_sriov(adapter)) - return; - -#ifdef CONFIG_IXGBE_DCB - if (ixgbe_cache_ring_dcb(adapter)) - return; -#endif - -#ifdef IXGBE_FCOE - if (ixgbe_cache_ring_fcoe(adapter)) - return; -#endif /* IXGBE_FCOE */ - - if (ixgbe_cache_ring_fdir(adapter)) - return; - - if (ixgbe_cache_ring_rss(adapter)) - return; -} - -/** - * ixgbe_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. The polling_netdev array is - * intended for Multiqueue, but should work fine with a single queue. - **/ -static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter) -{ - int rx = 0, tx = 0, nid = adapter->node; - - if (nid < 0 || !node_online(nid)) - nid = first_online_node; - - for (; tx < adapter->num_tx_queues; tx++) { - struct ixgbe_ring *ring; - - ring = kzalloc_node(sizeof(*ring), GFP_KERNEL, nid); - if (!ring) - ring = kzalloc(sizeof(*ring), GFP_KERNEL); - if (!ring) - goto err_allocation; - ring->count = adapter->tx_ring_count; - ring->queue_index = tx; - ring->numa_node = nid; - ring->dev = &adapter->pdev->dev; - ring->netdev = adapter->netdev; - - adapter->tx_ring[tx] = ring; - } - - for (; rx < adapter->num_rx_queues; rx++) { - struct ixgbe_ring *ring; - - ring = kzalloc_node(sizeof(*ring), GFP_KERNEL, nid); - if (!ring) - ring = kzalloc(sizeof(*ring), GFP_KERNEL); - if (!ring) - goto err_allocation; - ring->count = adapter->rx_ring_count; - ring->queue_index = rx; - ring->numa_node = nid; - ring->dev = &adapter->pdev->dev; - ring->netdev = adapter->netdev; - - adapter->rx_ring[rx] = ring; - } - - ixgbe_cache_ring_register(adapter); - - return 0; - -err_allocation: - while (tx) - kfree(adapter->tx_ring[--tx]); - - while (rx) - kfree(adapter->rx_ring[--rx]); - return -ENOMEM; -} - -/** - * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported - * @adapter: board private structure to initialize - * - * Attempt to configure the interrupts using the best available - * capabilities of the hardware and the kernel. - **/ -static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - int err = 0; - int vector, v_budget; - - /* - * It's easy to be greedy for MSI-X vectors, but it really - * doesn't do us much good if we have a lot more vectors - * than CPU's. So let's be conservative and only ask for - * (roughly) the same number of vectors as there are CPU's. - */ - v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues, - (int)num_online_cpus()) + NON_Q_VECTORS; - - /* - * At the same time, hardware can only support a maximum of - * hw.mac->max_msix_vectors vectors. With features - * such as RSS and VMDq, we can easily surpass the number of Rx and Tx - * descriptor queues supported by our device. Thus, we cap it off in - * those rare cases where the cpu count also exceeds our vector limit. - */ - v_budget = min(v_budget, (int)hw->mac.max_msix_vectors); - - /* A failure in MSI-X entry allocation isn't fatal, but it does - * mean we disable MSI-X capabilities of the adapter. */ - adapter->msix_entries = kcalloc(v_budget, - sizeof(struct msix_entry), GFP_KERNEL); - if (adapter->msix_entries) { - for (vector = 0; vector < v_budget; vector++) - adapter->msix_entries[vector].entry = vector; - - ixgbe_acquire_msix_vectors(adapter, v_budget); - - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) - goto out; - } - - adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; - adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; - if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { - e_err(probe, - "ATR is not supported while multiple " - "queues are disabled. Disabling Flow Director\n"); - } - adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; - adapter->atr_sample_rate = 0; - if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) - ixgbe_disable_sriov(adapter); - - err = ixgbe_set_num_queues(adapter); - if (err) - return err; - - err = pci_enable_msi(adapter->pdev); - if (!err) { - adapter->flags |= IXGBE_FLAG_MSI_ENABLED; - } else { - netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev, - "Unable to allocate MSI interrupt, " - "falling back to legacy. Error: %d\n", err); - /* reset err */ - err = 0; - } - -out: - return err; -} - -/** - * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors - * @adapter: board private structure to initialize - * - * We allocate one q_vector per queue interrupt. If allocation fails we - * return -ENOMEM. - **/ -static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter) -{ - int q_idx, num_q_vectors; - struct ixgbe_q_vector *q_vector; - int (*poll)(struct napi_struct *, int); - - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { - num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - poll = &ixgbe_clean_rxtx_many; - } else { - num_q_vectors = 1; - poll = &ixgbe_poll; - } - - for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { - q_vector = kzalloc_node(sizeof(struct ixgbe_q_vector), - GFP_KERNEL, adapter->node); - if (!q_vector) - q_vector = kzalloc(sizeof(struct ixgbe_q_vector), - GFP_KERNEL); - if (!q_vector) - goto err_out; - q_vector->adapter = adapter; - if (q_vector->tx.count && !q_vector->rx.count) - q_vector->eitr = adapter->tx_eitr_param; - else - q_vector->eitr = adapter->rx_eitr_param; - q_vector->v_idx = q_idx; - netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64); - adapter->q_vector[q_idx] = q_vector; - } - - return 0; - -err_out: - while (q_idx) { - q_idx--; - q_vector = adapter->q_vector[q_idx]; - netif_napi_del(&q_vector->napi); - kfree(q_vector); - adapter->q_vector[q_idx] = NULL; - } - return -ENOMEM; -} - -/** - * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors - * @adapter: board private structure to initialize - * - * This function frees the memory allocated to the q_vectors. In addition if - * NAPI is enabled it will delete any references to the NAPI struct prior - * to freeing the q_vector. - **/ -static void ixgbe_free_q_vectors(struct ixgbe_adapter *adapter) -{ - int q_idx, num_q_vectors; - - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) - num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - else - num_q_vectors = 1; - - for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { - struct ixgbe_q_vector *q_vector = adapter->q_vector[q_idx]; - adapter->q_vector[q_idx] = NULL; - netif_napi_del(&q_vector->napi); - kfree(q_vector); - } -} - -static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter) -{ - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { - adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; - pci_disable_msix(adapter->pdev); - kfree(adapter->msix_entries); - adapter->msix_entries = NULL; - } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { - adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; - pci_disable_msi(adapter->pdev); - } -} - -/** - * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme - * @adapter: board private structure to initialize - * - * We determine which interrupt scheme to use based on... - * - Kernel support (MSI, MSI-X) - * - which can be user-defined (via MODULE_PARAM) - * - Hardware queue count (num_*_queues) - * - defined by miscellaneous hardware support/features (RSS, etc.) - **/ -int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter) -{ - int err; - - /* Number of supported queues */ - err = ixgbe_set_num_queues(adapter); - if (err) - return err; - - err = ixgbe_set_interrupt_capability(adapter); - if (err) { - e_dev_err("Unable to setup interrupt capabilities\n"); - goto err_set_interrupt; - } - - err = ixgbe_alloc_q_vectors(adapter); - if (err) { - e_dev_err("Unable to allocate memory for queue vectors\n"); - goto err_alloc_q_vectors; - } - - err = ixgbe_alloc_queues(adapter); - if (err) { - e_dev_err("Unable to allocate memory for queues\n"); - goto err_alloc_queues; - } - - e_dev_info("Multiqueue %s: Rx Queue count = %u, Tx Queue count = %u\n", - (adapter->num_rx_queues > 1) ? "Enabled" : "Disabled", - adapter->num_rx_queues, adapter->num_tx_queues); - - set_bit(__IXGBE_DOWN, &adapter->state); - - return 0; - -err_alloc_queues: - ixgbe_free_q_vectors(adapter); -err_alloc_q_vectors: - ixgbe_reset_interrupt_capability(adapter); -err_set_interrupt: - return err; -} - -/** - * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings - * @adapter: board private structure to clear interrupt scheme on - * - * We go through and clear interrupt specific resources and reset the structure - * to pre-load conditions - **/ -void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_tx_queues; i++) { - kfree(adapter->tx_ring[i]); - adapter->tx_ring[i] = NULL; - } - for (i = 0; i < adapter->num_rx_queues; i++) { - struct ixgbe_ring *ring = adapter->rx_ring[i]; - - /* ixgbe_get_stats64() might access this ring, we must wait - * a grace period before freeing it. - */ - kfree_rcu(ring, rcu); - adapter->rx_ring[i] = NULL; - } - - adapter->num_tx_queues = 0; - adapter->num_rx_queues = 0; - - ixgbe_free_q_vectors(adapter); - ixgbe_reset_interrupt_capability(adapter); -} - -/** - * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) - * @adapter: board private structure to initialize - * - * ixgbe_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 ixgbe_sw_init(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - struct pci_dev *pdev = adapter->pdev; - struct net_device *dev = adapter->netdev; - unsigned int rss; -#ifdef CONFIG_IXGBE_DCB - int j; - struct tc_configuration *tc; -#endif - int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_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; - - /* Set capability flags */ - rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus()); - adapter->ring_feature[RING_F_RSS].indices = rss; - adapter->flags |= IXGBE_FLAG_RSS_ENABLED; - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - if (hw->device_id == IXGBE_DEV_ID_82598AT) - adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE; - adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598; - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599; - adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE; - adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED; - if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM) - adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; - /* Flow Director hash filters enabled */ - adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE; - adapter->atr_sample_rate = 20; - adapter->ring_feature[RING_F_FDIR].indices = - IXGBE_MAX_FDIR_INDICES; - adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K; -#ifdef IXGBE_FCOE - adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE; - adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; - adapter->ring_feature[RING_F_FCOE].indices = 0; -#ifdef CONFIG_IXGBE_DCB - /* Default traffic class to use for FCoE */ - adapter->fcoe.up = IXGBE_FCOE_DEFTC; -#endif -#endif /* IXGBE_FCOE */ - break; - default: - break; - } - - /* n-tuple support exists, always init our spinlock */ - spin_lock_init(&adapter->fdir_perfect_lock); - -#ifdef CONFIG_IXGBE_DCB - /* Configure DCB traffic classes */ - for (j = 0; j < MAX_TRAFFIC_CLASS; j++) { - tc = &adapter->dcb_cfg.tc_config[j]; - tc->path[DCB_TX_CONFIG].bwg_id = 0; - tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1); - tc->path[DCB_RX_CONFIG].bwg_id = 0; - tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1); - tc->dcb_pfc = pfc_disabled; - } - adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100; - adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100; - adapter->dcb_cfg.pfc_mode_enable = false; - adapter->dcb_set_bitmap = 0x00; - adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE; - ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg, - MAX_TRAFFIC_CLASS); - -#endif - - /* default flow control settings */ - hw->fc.requested_mode = ixgbe_fc_full; - hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */ -#ifdef CONFIG_DCB - adapter->last_lfc_mode = hw->fc.current_mode; -#endif - hw->fc.high_water = FC_HIGH_WATER(max_frame); - hw->fc.low_water = FC_LOW_WATER(max_frame); - hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; - hw->fc.send_xon = true; - hw->fc.disable_fc_autoneg = false; - - /* enable itr by default in dynamic mode */ - adapter->rx_itr_setting = 1; - adapter->rx_eitr_param = 20000; - adapter->tx_itr_setting = 1; - adapter->tx_eitr_param = 10000; - - /* set defaults for eitr in MegaBytes */ - adapter->eitr_low = 10; - adapter->eitr_high = 20; - - /* set default ring sizes */ - adapter->tx_ring_count = IXGBE_DEFAULT_TXD; - adapter->rx_ring_count = IXGBE_DEFAULT_RXD; - - /* set default work limits */ - adapter->tx_work_limit = adapter->tx_ring_count; - - /* initialize eeprom parameters */ - if (ixgbe_init_eeprom_params_generic(hw)) { - e_dev_err("EEPROM initialization failed\n"); - return -EIO; - } - - /* enable rx csum by default */ - adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; - - /* get assigned NUMA node */ - adapter->node = dev_to_node(&pdev->dev); - - set_bit(__IXGBE_DOWN, &adapter->state); - - return 0; -} - -/** - * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) - * @tx_ring: tx descriptor ring (for a specific queue) to setup - * - * Return 0 on success, negative on failure - **/ -int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring) -{ - struct device *dev = tx_ring->dev; - int size; - - size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; - tx_ring->tx_buffer_info = vzalloc_node(size, tx_ring->numa_node); - if (!tx_ring->tx_buffer_info) - tx_ring->tx_buffer_info = vzalloc(size); - if (!tx_ring->tx_buffer_info) - goto err; - - /* round up to nearest 4K */ - tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); - tx_ring->size = ALIGN(tx_ring->size, 4096); - - tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, - &tx_ring->dma, GFP_KERNEL); - if (!tx_ring->desc) - goto err; - - tx_ring->next_to_use = 0; - tx_ring->next_to_clean = 0; - return 0; - -err: - vfree(tx_ring->tx_buffer_info); - tx_ring->tx_buffer_info = NULL; - dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); - return -ENOMEM; -} - -/** - * ixgbe_setup_all_tx_resources - allocate all queues Tx resources - * @adapter: board private structure - * - * If this function returns with an error, then it's possible one or - * more of the rings is populated (while the rest are not). It is the - * callers duty to clean those orphaned rings. - * - * Return 0 on success, negative on failure - **/ -static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) -{ - int i, err = 0; - - for (i = 0; i < adapter->num_tx_queues; i++) { - err = ixgbe_setup_tx_resources(adapter->tx_ring[i]); - if (!err) - continue; - e_err(probe, "Allocation for Tx Queue %u failed\n", i); - break; - } - - return err; -} - -/** - * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) - * @rx_ring: rx descriptor ring (for a specific queue) to setup - * - * Returns 0 on success, negative on failure - **/ -int ixgbe_setup_rx_resources(struct ixgbe_ring *rx_ring) -{ - struct device *dev = rx_ring->dev; - int size; - - size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; - rx_ring->rx_buffer_info = vzalloc_node(size, rx_ring->numa_node); - if (!rx_ring->rx_buffer_info) - rx_ring->rx_buffer_info = vzalloc(size); - if (!rx_ring->rx_buffer_info) - goto err; - - /* Round up to nearest 4K */ - rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); - rx_ring->size = ALIGN(rx_ring->size, 4096); - - rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, - &rx_ring->dma, GFP_KERNEL); - - if (!rx_ring->desc) - goto err; - - rx_ring->next_to_clean = 0; - rx_ring->next_to_use = 0; - - return 0; -err: - vfree(rx_ring->rx_buffer_info); - rx_ring->rx_buffer_info = NULL; - dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); - return -ENOMEM; -} - -/** - * ixgbe_setup_all_rx_resources - allocate all queues Rx resources - * @adapter: board private structure - * - * If this function returns with an error, then it's possible one or - * more of the rings is populated (while the rest are not). It is the - * callers duty to clean those orphaned rings. - * - * Return 0 on success, negative on failure - **/ -static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) -{ - int i, err = 0; - - for (i = 0; i < adapter->num_rx_queues; i++) { - err = ixgbe_setup_rx_resources(adapter->rx_ring[i]); - if (!err) - continue; - e_err(probe, "Allocation for Rx Queue %u failed\n", i); - break; - } - - return err; -} - -/** - * ixgbe_free_tx_resources - Free Tx Resources per Queue - * @tx_ring: Tx descriptor ring for a specific queue - * - * Free all transmit software resources - **/ -void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring) -{ - ixgbe_clean_tx_ring(tx_ring); - - vfree(tx_ring->tx_buffer_info); - tx_ring->tx_buffer_info = NULL; - - /* if not set, then don't free */ - if (!tx_ring->desc) - return; - - dma_free_coherent(tx_ring->dev, tx_ring->size, - tx_ring->desc, tx_ring->dma); - - tx_ring->desc = NULL; -} - -/** - * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues - * @adapter: board private structure - * - * Free all transmit software resources - **/ -static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_tx_queues; i++) - if (adapter->tx_ring[i]->desc) - ixgbe_free_tx_resources(adapter->tx_ring[i]); -} - -/** - * ixgbe_free_rx_resources - Free Rx Resources - * @rx_ring: ring to clean the resources from - * - * Free all receive software resources - **/ -void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring) -{ - ixgbe_clean_rx_ring(rx_ring); - - vfree(rx_ring->rx_buffer_info); - rx_ring->rx_buffer_info = NULL; - - /* if not set, then don't free */ - if (!rx_ring->desc) - return; - - dma_free_coherent(rx_ring->dev, rx_ring->size, - rx_ring->desc, rx_ring->dma); - - rx_ring->desc = NULL; -} - -/** - * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues - * @adapter: board private structure - * - * Free all receive software resources - **/ -static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_rx_queues; i++) - if (adapter->rx_ring[i]->desc) - ixgbe_free_rx_resources(adapter->rx_ring[i]); -} - -/** - * ixgbe_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 ixgbe_change_mtu(struct net_device *netdev, int new_mtu) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - struct ixgbe_hw *hw = &adapter->hw; - int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; - - /* MTU < 68 is an error and causes problems on some kernels */ - if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED && - hw->mac.type != ixgbe_mac_X540) { - if ((new_mtu < 68) || (max_frame > MAXIMUM_ETHERNET_VLAN_SIZE)) - return -EINVAL; - } else { - if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) - return -EINVAL; - } - - e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu); - /* must set new MTU before calling down or up */ - netdev->mtu = new_mtu; - - hw->fc.high_water = FC_HIGH_WATER(max_frame); - hw->fc.low_water = FC_LOW_WATER(max_frame); - - if (netif_running(netdev)) - ixgbe_reinit_locked(adapter); - - return 0; -} - -/** - * ixgbe_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 ixgbe_open(struct net_device *netdev) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - int err; - - /* disallow open during test */ - if (test_bit(__IXGBE_TESTING, &adapter->state)) - return -EBUSY; - - netif_carrier_off(netdev); - - /* allocate transmit descriptors */ - err = ixgbe_setup_all_tx_resources(adapter); - if (err) - goto err_setup_tx; - - /* allocate receive descriptors */ - err = ixgbe_setup_all_rx_resources(adapter); - if (err) - goto err_setup_rx; - - ixgbe_configure(adapter); - - err = ixgbe_request_irq(adapter); - if (err) - goto err_req_irq; - - err = ixgbe_up_complete(adapter); - if (err) - goto err_up; - - netif_tx_start_all_queues(netdev); - - return 0; - -err_up: - ixgbe_release_hw_control(adapter); - ixgbe_free_irq(adapter); -err_req_irq: -err_setup_rx: - ixgbe_free_all_rx_resources(adapter); -err_setup_tx: - ixgbe_free_all_tx_resources(adapter); - ixgbe_reset(adapter); - - return err; -} - -/** - * ixgbe_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 drivers 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 ixgbe_close(struct net_device *netdev) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - - ixgbe_down(adapter); - ixgbe_free_irq(adapter); - - ixgbe_fdir_filter_exit(adapter); - - ixgbe_free_all_tx_resources(adapter); - ixgbe_free_all_rx_resources(adapter); - - ixgbe_release_hw_control(adapter); - - return 0; -} - -#ifdef CONFIG_PM -static int ixgbe_resume(struct pci_dev *pdev) -{ - struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); - struct net_device *netdev = adapter->netdev; - u32 err; - - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - /* - * pci_restore_state clears dev->state_saved so call - * pci_save_state to restore it. - */ - pci_save_state(pdev); - - err = pci_enable_device_mem(pdev); - if (err) { - e_dev_err("Cannot enable PCI device from suspend\n"); - return err; - } - pci_set_master(pdev); - - pci_wake_from_d3(pdev, false); - - err = ixgbe_init_interrupt_scheme(adapter); - if (err) { - e_dev_err("Cannot initialize interrupts for device\n"); - return err; - } - - ixgbe_reset(adapter); - - IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); - - if (netif_running(netdev)) { - err = ixgbe_open(netdev); - if (err) - return err; - } - - netif_device_attach(netdev); - - return 0; -} -#endif /* CONFIG_PM */ - -static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake) -{ - struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); - struct net_device *netdev = adapter->netdev; - struct ixgbe_hw *hw = &adapter->hw; - u32 ctrl, fctrl; - u32 wufc = adapter->wol; -#ifdef CONFIG_PM - int retval = 0; -#endif - - netif_device_detach(netdev); - - if (netif_running(netdev)) { - ixgbe_down(adapter); - ixgbe_free_irq(adapter); - ixgbe_free_all_tx_resources(adapter); - ixgbe_free_all_rx_resources(adapter); - } - - ixgbe_clear_interrupt_scheme(adapter); -#ifdef CONFIG_DCB - kfree(adapter->ixgbe_ieee_pfc); - kfree(adapter->ixgbe_ieee_ets); -#endif - -#ifdef CONFIG_PM - retval = pci_save_state(pdev); - if (retval) - return retval; - -#endif - if (wufc) { - ixgbe_set_rx_mode(netdev); - - /* turn on all-multi mode if wake on multicast is enabled */ - if (wufc & IXGBE_WUFC_MC) { - fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); - fctrl |= IXGBE_FCTRL_MPE; - IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); - } - - ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); - ctrl |= IXGBE_CTRL_GIO_DIS; - IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); - - IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc); - } else { - IXGBE_WRITE_REG(hw, IXGBE_WUC, 0); - IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0); - } - - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - pci_wake_from_d3(pdev, false); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - pci_wake_from_d3(pdev, !!wufc); - break; - default: - break; - } - - *enable_wake = !!wufc; - - ixgbe_release_hw_control(adapter); - - pci_disable_device(pdev); - - return 0; -} - -#ifdef CONFIG_PM -static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state) -{ - int retval; - bool wake; - - retval = __ixgbe_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; -} -#endif /* CONFIG_PM */ - -static void ixgbe_shutdown(struct pci_dev *pdev) -{ - bool wake; - - __ixgbe_shutdown(pdev, &wake); - - if (system_state == SYSTEM_POWER_OFF) { - pci_wake_from_d3(pdev, wake); - pci_set_power_state(pdev, PCI_D3hot); - } -} - -/** - * ixgbe_update_stats - Update the board statistics counters. - * @adapter: board private structure - **/ -void ixgbe_update_stats(struct ixgbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct ixgbe_hw *hw = &adapter->hw; - struct ixgbe_hw_stats *hwstats = &adapter->stats; - u64 total_mpc = 0; - u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; - u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0; - u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0; - u64 bytes = 0, packets = 0; - - if (test_bit(__IXGBE_DOWN, &adapter->state) || - test_bit(__IXGBE_RESETTING, &adapter->state)) - return; - - if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) { - u64 rsc_count = 0; - u64 rsc_flush = 0; - for (i = 0; i < 16; i++) - adapter->hw_rx_no_dma_resources += - IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); - for (i = 0; i < adapter->num_rx_queues; i++) { - rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count; - rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush; - } - adapter->rsc_total_count = rsc_count; - adapter->rsc_total_flush = rsc_flush; - } - - for (i = 0; i < adapter->num_rx_queues; i++) { - struct ixgbe_ring *rx_ring = adapter->rx_ring[i]; - non_eop_descs += rx_ring->rx_stats.non_eop_descs; - alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed; - alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed; - bytes += rx_ring->stats.bytes; - packets += rx_ring->stats.packets; - } - adapter->non_eop_descs = non_eop_descs; - adapter->alloc_rx_page_failed = alloc_rx_page_failed; - adapter->alloc_rx_buff_failed = alloc_rx_buff_failed; - netdev->stats.rx_bytes = bytes; - netdev->stats.rx_packets = packets; - - bytes = 0; - packets = 0; - /* gather some stats to the adapter struct that are per queue */ - for (i = 0; i < adapter->num_tx_queues; i++) { - struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; - restart_queue += tx_ring->tx_stats.restart_queue; - tx_busy += tx_ring->tx_stats.tx_busy; - bytes += tx_ring->stats.bytes; - packets += tx_ring->stats.packets; - } - adapter->restart_queue = restart_queue; - adapter->tx_busy = tx_busy; - netdev->stats.tx_bytes = bytes; - netdev->stats.tx_packets = packets; - - hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); - for (i = 0; i < 8; i++) { - /* for packet buffers not used, the register should read 0 */ - mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); - missed_rx += mpc; - hwstats->mpc[i] += mpc; - total_mpc += hwstats->mpc[i]; - if (hw->mac.type == ixgbe_mac_82598EB) - hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); - hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i)); - hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i)); - hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i)); - hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i)); - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - hwstats->pxonrxc[i] += - IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); - break; - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - hwstats->pxonrxc[i] += - IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i)); - break; - default: - break; - } - hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); - hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); - } - hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); - /* work around hardware counting issue */ - hwstats->gprc -= missed_rx; - - ixgbe_update_xoff_received(adapter); - - /* 82598 hardware only has a 32 bit counter in the high register */ - switch (hw->mac.type) { - case ixgbe_mac_82598EB: - hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); - hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); - hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); - hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH); - break; - case ixgbe_mac_X540: - /* OS2BMC stats are X540 only*/ - hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC); - hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC); - hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC); - hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC); - case ixgbe_mac_82599EB: - hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL); - IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */ - hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL); - IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */ - hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL); - IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */ - hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); - hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH); - hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS); -#ifdef IXGBE_FCOE - hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC); - hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC); - hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC); - hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC); - hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC); - hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC); -#endif /* IXGBE_FCOE */ - break; - default: - break; - } - bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); - hwstats->bprc += bprc; - hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); - if (hw->mac.type == ixgbe_mac_82598EB) - hwstats->mprc -= bprc; - hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC); - hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); - hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); - hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); - hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); - hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); - hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); - hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); - lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); - hwstats->lxontxc += lxon; - lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); - hwstats->lxofftxc += lxoff; - hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC); - hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); - hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); - /* - * 82598 errata - tx of flow control packets is included in tx counters - */ - xon_off_tot = lxon + lxoff; - hwstats->gptc -= xon_off_tot; - hwstats->mptc -= xon_off_tot; - hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); - hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC); - hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC); - hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC); - hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR); - hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); - hwstats->ptc64 -= xon_off_tot; - hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); - hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); - hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); - hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); - hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); - hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); - - /* Fill out the OS statistics structure */ - netdev->stats.multicast = hwstats->mprc; - - /* Rx Errors */ - netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec; - netdev->stats.rx_dropped = 0; - netdev->stats.rx_length_errors = hwstats->rlec; - netdev->stats.rx_crc_errors = hwstats->crcerrs; - netdev->stats.rx_missed_errors = total_mpc; -} - -/** - * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table - * @adapter - pointer to the device adapter structure - **/ -static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - int i; - - if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) - return; - - adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; - - /* if interface is down do nothing */ - if (test_bit(__IXGBE_DOWN, &adapter->state)) - return; - - /* do nothing if we are not using signature filters */ - if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)) - return; - - adapter->fdir_overflow++; - - if (ixgbe_reinit_fdir_tables_82599(hw) == 0) { - for (i = 0; i < adapter->num_tx_queues; i++) - set_bit(__IXGBE_TX_FDIR_INIT_DONE, - &(adapter->tx_ring[i]->state)); - /* re-enable flow director interrupts */ - IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR); - } else { - e_err(probe, "failed to finish FDIR re-initialization, " - "ignored adding FDIR ATR filters\n"); - } -} - -/** - * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts - * @adapter - pointer to the device adapter structure - * - * This function serves two purposes. First it strobes the interrupt lines - * in order to make certain interrupts are occuring. Secondly it sets the - * bits needed to check for TX hangs. As a result we should immediately - * determine if a hang has occured. - */ -static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u64 eics = 0; - int i; - - /* If we're down or resetting, just bail */ - if (test_bit(__IXGBE_DOWN, &adapter->state) || - test_bit(__IXGBE_RESETTING, &adapter->state)) - return; - - /* Force detection of hung controller */ - if (netif_carrier_ok(adapter->netdev)) { - for (i = 0; i < adapter->num_tx_queues; i++) - set_check_for_tx_hang(adapter->tx_ring[i]); - } - - if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { - /* - * for legacy and MSI interrupts don't set any bits - * that are enabled for EIAM, because this operation - * would set *both* EIMS and EICS for any bit in EIAM - */ - IXGBE_WRITE_REG(hw, IXGBE_EICS, - (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); - } else { - /* get one bit for every active tx/rx interrupt vector */ - for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) { - struct ixgbe_q_vector *qv = adapter->q_vector[i]; - if (qv->rx.count || qv->tx.count) - eics |= ((u64)1 << i); - } - } - - /* Cause software interrupt to ensure rings are cleaned */ - ixgbe_irq_rearm_queues(adapter, eics); - -} - -/** - * ixgbe_watchdog_update_link - update the link status - * @adapter - pointer to the device adapter structure - * @link_speed - pointer to a u32 to store the link_speed - **/ -static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 link_speed = adapter->link_speed; - bool link_up = adapter->link_up; - int i; - - if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)) - return; - - if (hw->mac.ops.check_link) { - hw->mac.ops.check_link(hw, &link_speed, &link_up, false); - } else { - /* always assume link is up, if no check link function */ - link_speed = IXGBE_LINK_SPEED_10GB_FULL; - link_up = true; - } - if (link_up) { - if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { - for (i = 0; i < MAX_TRAFFIC_CLASS; i++) - hw->mac.ops.fc_enable(hw, i); - } else { - hw->mac.ops.fc_enable(hw, 0); - } - } - - if (link_up || - time_after(jiffies, (adapter->link_check_timeout + - IXGBE_TRY_LINK_TIMEOUT))) { - adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; - IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC); - IXGBE_WRITE_FLUSH(hw); - } - - adapter->link_up = link_up; - adapter->link_speed = link_speed; -} - -/** - * ixgbe_watchdog_link_is_up - update netif_carrier status and - * print link up message - * @adapter - pointer to the device adapter structure - **/ -static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct ixgbe_hw *hw = &adapter->hw; - u32 link_speed = adapter->link_speed; - bool flow_rx, flow_tx; - - /* only continue if link was previously down */ - if (netif_carrier_ok(netdev)) - return; - - adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; - - switch (hw->mac.type) { - case ixgbe_mac_82598EB: { - u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL); - u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS); - flow_rx = !!(frctl & IXGBE_FCTRL_RFCE); - flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X); - } - break; - case ixgbe_mac_X540: - case ixgbe_mac_82599EB: { - u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN); - u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG); - flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE); - flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X); - } - break; - default: - flow_tx = false; - flow_rx = false; - break; - } - e_info(drv, "NIC Link is Up %s, Flow Control: %s\n", - (link_speed == IXGBE_LINK_SPEED_10GB_FULL ? - "10 Gbps" : - (link_speed == IXGBE_LINK_SPEED_1GB_FULL ? - "1 Gbps" : - (link_speed == IXGBE_LINK_SPEED_100_FULL ? - "100 Mbps" : - "unknown speed"))), - ((flow_rx && flow_tx) ? "RX/TX" : - (flow_rx ? "RX" : - (flow_tx ? "TX" : "None")))); - - netif_carrier_on(netdev); - ixgbe_check_vf_rate_limit(adapter); -} - -/** - * ixgbe_watchdog_link_is_down - update netif_carrier status and - * print link down message - * @adapter - pointer to the adapter structure - **/ -static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter* adapter) -{ - struct net_device *netdev = adapter->netdev; - struct ixgbe_hw *hw = &adapter->hw; - - adapter->link_up = false; - adapter->link_speed = 0; - - /* only continue if link was up previously */ - if (!netif_carrier_ok(netdev)) - return; - - /* poll for SFP+ cable when link is down */ - if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB) - adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; - - e_info(drv, "NIC Link is Down\n"); - netif_carrier_off(netdev); -} - -/** - * ixgbe_watchdog_flush_tx - flush queues on link down - * @adapter - pointer to the device adapter structure - **/ -static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter) -{ - int i; - int some_tx_pending = 0; - - if (!netif_carrier_ok(adapter->netdev)) { - for (i = 0; i < adapter->num_tx_queues; i++) { - struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; - if (tx_ring->next_to_use != tx_ring->next_to_clean) { - some_tx_pending = 1; - break; - } - } - - if (some_tx_pending) { - /* 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->flags2 |= IXGBE_FLAG2_RESET_REQUESTED; - } - } -} - -static void ixgbe_spoof_check(struct ixgbe_adapter *adapter) -{ - u32 ssvpc; - - /* Do not perform spoof check for 82598 */ - if (adapter->hw.mac.type == ixgbe_mac_82598EB) - return; - - ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC); - - /* - * ssvpc register is cleared on read, if zero then no - * spoofed packets in the last interval. - */ - if (!ssvpc) - return; - - e_warn(drv, "%d Spoofed packets detected\n", ssvpc); -} - -/** - * ixgbe_watchdog_subtask - check and bring link up - * @adapter - pointer to the device adapter structure - **/ -static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter) -{ - /* if interface is down do nothing */ - if (test_bit(__IXGBE_DOWN, &adapter->state)) - return; - - ixgbe_watchdog_update_link(adapter); - - if (adapter->link_up) - ixgbe_watchdog_link_is_up(adapter); - else - ixgbe_watchdog_link_is_down(adapter); - - ixgbe_spoof_check(adapter); - ixgbe_update_stats(adapter); - - ixgbe_watchdog_flush_tx(adapter); -} - -/** - * ixgbe_sfp_detection_subtask - poll for SFP+ cable - * @adapter - the ixgbe adapter structure - **/ -static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - s32 err; - - /* not searching for SFP so there is nothing to do here */ - if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) && - !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) - return; - - /* someone else is in init, wait until next service event */ - if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) - return; - - err = hw->phy.ops.identify_sfp(hw); - if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) - goto sfp_out; - - if (err == IXGBE_ERR_SFP_NOT_PRESENT) { - /* If no cable is present, then we need to reset - * the next time we find a good cable. */ - adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; - } - - /* exit on error */ - if (err) - goto sfp_out; - - /* exit if reset not needed */ - if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) - goto sfp_out; - - adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET; - - /* - * A module may be identified correctly, but the EEPROM may not have - * support for that module. setup_sfp() will fail in that case, so - * we should not allow that module to load. - */ - if (hw->mac.type == ixgbe_mac_82598EB) - err = hw->phy.ops.reset(hw); - else - err = hw->mac.ops.setup_sfp(hw); - - if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) - goto sfp_out; - - adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; - e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type); - -sfp_out: - clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); - - if ((err == IXGBE_ERR_SFP_NOT_SUPPORTED) && - (adapter->netdev->reg_state == NETREG_REGISTERED)) { - e_dev_err("failed to initialize because an unsupported " - "SFP+ module type was detected.\n"); - e_dev_err("Reload the driver after installing a " - "supported module.\n"); - unregister_netdev(adapter->netdev); - } -} - -/** - * ixgbe_sfp_link_config_subtask - set up link SFP after module install - * @adapter - the ixgbe adapter structure - **/ -static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 autoneg; - bool negotiation; - - if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG)) - return; - - /* someone else is in init, wait until next service event */ - if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) - return; - - adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; - - autoneg = hw->phy.autoneg_advertised; - if ((!autoneg) && (hw->mac.ops.get_link_capabilities)) - hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation); - hw->mac.autotry_restart = false; - if (hw->mac.ops.setup_link) - hw->mac.ops.setup_link(hw, autoneg, negotiation, true); - - adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; - adapter->link_check_timeout = jiffies; - clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); -} - -/** - * ixgbe_service_timer - Timer Call-back - * @data: pointer to adapter cast into an unsigned long - **/ -static void ixgbe_service_timer(unsigned long data) -{ - struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; - unsigned long next_event_offset; - - /* poll faster when waiting for link */ - if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) - next_event_offset = HZ / 10; - else - next_event_offset = HZ * 2; - - /* Reset the timer */ - mod_timer(&adapter->service_timer, next_event_offset + jiffies); - - ixgbe_service_event_schedule(adapter); -} - -static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter) -{ - if (!(adapter->flags2 & IXGBE_FLAG2_RESET_REQUESTED)) - return; - - adapter->flags2 &= ~IXGBE_FLAG2_RESET_REQUESTED; - - /* If we're already down or resetting, just bail */ - if (test_bit(__IXGBE_DOWN, &adapter->state) || - test_bit(__IXGBE_RESETTING, &adapter->state)) - return; - - ixgbe_dump(adapter); - netdev_err(adapter->netdev, "Reset adapter\n"); - adapter->tx_timeout_count++; - - ixgbe_reinit_locked(adapter); -} - -/** - * ixgbe_service_task - manages and runs subtasks - * @work: pointer to work_struct containing our data - **/ -static void ixgbe_service_task(struct work_struct *work) -{ - struct ixgbe_adapter *adapter = container_of(work, - struct ixgbe_adapter, - service_task); - - ixgbe_reset_subtask(adapter); - ixgbe_sfp_detection_subtask(adapter); - ixgbe_sfp_link_config_subtask(adapter); - ixgbe_check_overtemp_subtask(adapter); - ixgbe_watchdog_subtask(adapter); - ixgbe_fdir_reinit_subtask(adapter); - ixgbe_check_hang_subtask(adapter); - - ixgbe_service_event_complete(adapter); -} - -void ixgbe_tx_ctxtdesc(struct ixgbe_ring *tx_ring, u32 vlan_macip_lens, - u32 fcoe_sof_eof, u32 type_tucmd, u32 mss_l4len_idx) -{ - struct ixgbe_adv_tx_context_desc *context_desc; - u16 i = tx_ring->next_to_use; - - context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i); - - i++; - tx_ring->next_to_use = (i < tx_ring->count) ? i : 0; - - /* set bits to identify this as an advanced context descriptor */ - type_tucmd |= IXGBE_TXD_CMD_DEXT | IXGBE_ADVTXD_DTYP_CTXT; - - context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); - context_desc->seqnum_seed = cpu_to_le32(fcoe_sof_eof); - context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd); - context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); -} - -static int ixgbe_tso(struct ixgbe_ring *tx_ring, struct sk_buff *skb, - u32 tx_flags, __be16 protocol, u8 *hdr_len) -{ - int err; - u32 vlan_macip_lens, type_tucmd; - u32 mss_l4len_idx, l4len; - - if (!skb_is_gso(skb)) - return 0; - - if (skb_header_cloned(skb)) { - err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); - if (err) - return err; - } - - /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ - type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; - - if (protocol == __constant_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); - type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4; - } else if (skb_is_gso_v6(skb)) { - 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); - } - - l4len = tcp_hdrlen(skb); - *hdr_len = skb_transport_offset(skb) + l4len; - - /* mss_l4len_id: use 1 as index for TSO */ - mss_l4len_idx = l4len << IXGBE_ADVTXD_L4LEN_SHIFT; - mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT; - mss_l4len_idx |= 1 << IXGBE_ADVTXD_IDX_SHIFT; - - /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */ - vlan_macip_lens = skb_network_header_len(skb); - vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT; - vlan_macip_lens |= tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; - - ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0, type_tucmd, - mss_l4len_idx); - - return 1; -} - -static bool ixgbe_tx_csum(struct ixgbe_ring *tx_ring, - struct sk_buff *skb, u32 tx_flags, - __be16 protocol) -{ - u32 vlan_macip_lens = 0; - u32 mss_l4len_idx = 0; - u32 type_tucmd = 0; - - if (skb->ip_summed != CHECKSUM_PARTIAL) { - if (!(tx_flags & IXGBE_TX_FLAGS_VLAN)) - return false; - } else { - u8 l4_hdr = 0; - switch (protocol) { - case __constant_htons(ETH_P_IP): - vlan_macip_lens |= skb_network_header_len(skb); - type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4; - l4_hdr = ip_hdr(skb)->protocol; - break; - case __constant_htons(ETH_P_IPV6): - vlan_macip_lens |= skb_network_header_len(skb); - l4_hdr = ipv6_hdr(skb)->nexthdr; - break; - default: - if (unlikely(net_ratelimit())) { - dev_warn(tx_ring->dev, - "partial checksum but proto=%x!\n", - skb->protocol); - } - break; - } - - switch (l4_hdr) { - case IPPROTO_TCP: - type_tucmd |= IXGBE_ADVTXD_TUCMD_L4T_TCP; - mss_l4len_idx = tcp_hdrlen(skb) << - IXGBE_ADVTXD_L4LEN_SHIFT; - break; - case IPPROTO_SCTP: - type_tucmd |= IXGBE_ADVTXD_TUCMD_L4T_SCTP; - mss_l4len_idx = sizeof(struct sctphdr) << - IXGBE_ADVTXD_L4LEN_SHIFT; - break; - case IPPROTO_UDP: - mss_l4len_idx = sizeof(struct udphdr) << - IXGBE_ADVTXD_L4LEN_SHIFT; - break; - default: - if (unlikely(net_ratelimit())) { - dev_warn(tx_ring->dev, - "partial checksum but l4 proto=%x!\n", - skb->protocol); - } - break; - } - } - - vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT; - vlan_macip_lens |= tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; - - ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0, - type_tucmd, mss_l4len_idx); - - return (skb->ip_summed == CHECKSUM_PARTIAL); -} - -static int ixgbe_tx_map(struct ixgbe_adapter *adapter, - struct ixgbe_ring *tx_ring, - struct sk_buff *skb, u32 tx_flags, - unsigned int first, const u8 hdr_len) -{ - struct device *dev = tx_ring->dev; - struct ixgbe_tx_buffer *tx_buffer_info; - unsigned int len; - unsigned int total = skb->len; - unsigned int offset = 0, size, count = 0; - unsigned int nr_frags = skb_shinfo(skb)->nr_frags; - unsigned int f; - unsigned int bytecount = skb->len; - u16 gso_segs = 1; - u16 i; - - i = tx_ring->next_to_use; - - if (tx_flags & IXGBE_TX_FLAGS_FCOE) - /* excluding fcoe_crc_eof for FCoE */ - total -= sizeof(struct fcoe_crc_eof); - - len = min(skb_headlen(skb), total); - while (len) { - tx_buffer_info = &tx_ring->tx_buffer_info[i]; - size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); - - tx_buffer_info->length = size; - tx_buffer_info->mapped_as_page = false; - tx_buffer_info->dma = dma_map_single(dev, - skb->data + offset, - size, DMA_TO_DEVICE); - if (dma_mapping_error(dev, tx_buffer_info->dma)) - goto dma_error; - tx_buffer_info->time_stamp = jiffies; - tx_buffer_info->next_to_watch = i; - - len -= size; - total -= size; - offset += size; - count++; - - if (len) { - i++; - if (i == tx_ring->count) - i = 0; - } - } - - for (f = 0; f < nr_frags; f++) { - struct skb_frag_struct *frag; - - frag = &skb_shinfo(skb)->frags[f]; - len = min((unsigned int)frag->size, total); - offset = frag->page_offset; - - while (len) { - i++; - if (i == tx_ring->count) - i = 0; - - tx_buffer_info = &tx_ring->tx_buffer_info[i]; - size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); - - tx_buffer_info->length = size; - tx_buffer_info->dma = dma_map_page(dev, - frag->page, - offset, size, - DMA_TO_DEVICE); - tx_buffer_info->mapped_as_page = true; - if (dma_mapping_error(dev, tx_buffer_info->dma)) - goto dma_error; - tx_buffer_info->time_stamp = jiffies; - tx_buffer_info->next_to_watch = i; - - len -= size; - total -= size; - offset += size; - count++; - } - if (total == 0) - break; - } - - if (tx_flags & IXGBE_TX_FLAGS_TSO) - gso_segs = skb_shinfo(skb)->gso_segs; -#ifdef IXGBE_FCOE - /* adjust for FCoE Sequence Offload */ - else if (tx_flags & IXGBE_TX_FLAGS_FSO) - gso_segs = DIV_ROUND_UP(skb->len - hdr_len, - skb_shinfo(skb)->gso_size); -#endif /* IXGBE_FCOE */ - bytecount += (gso_segs - 1) * hdr_len; - - /* multiply data chunks by size of headers */ - tx_ring->tx_buffer_info[i].bytecount = bytecount; - tx_ring->tx_buffer_info[i].gso_segs = gso_segs; - tx_ring->tx_buffer_info[i].skb = skb; - tx_ring->tx_buffer_info[first].next_to_watch = i; - - return count; - -dma_error: - e_dev_err("TX DMA map failed\n"); - - /* clear timestamp and dma mappings for failed tx_buffer_info map */ - tx_buffer_info->dma = 0; - tx_buffer_info->time_stamp = 0; - tx_buffer_info->next_to_watch = 0; - if (count) - count--; - - /* clear timestamp and dma mappings for remaining portion of packet */ - while (count--) { - if (i == 0) - i += tx_ring->count; - i--; - tx_buffer_info = &tx_ring->tx_buffer_info[i]; - ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info); - } - - return 0; -} - -static void ixgbe_tx_queue(struct ixgbe_ring *tx_ring, - int tx_flags, int count, u32 paylen, u8 hdr_len) -{ - union ixgbe_adv_tx_desc *tx_desc = NULL; - struct ixgbe_tx_buffer *tx_buffer_info; - u32 olinfo_status = 0, cmd_type_len = 0; - unsigned int i; - u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS; - - cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA; - - cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; - - if (tx_flags & IXGBE_TX_FLAGS_VLAN) - cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE; - - if (tx_flags & IXGBE_TX_FLAGS_TSO) { - cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; - - olinfo_status |= IXGBE_TXD_POPTS_TXSM << - IXGBE_ADVTXD_POPTS_SHIFT; - - /* use index 1 context for tso */ - olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT); - if (tx_flags & IXGBE_TX_FLAGS_IPV4) - olinfo_status |= IXGBE_TXD_POPTS_IXSM << - IXGBE_ADVTXD_POPTS_SHIFT; - - } else if (tx_flags & IXGBE_TX_FLAGS_CSUM) - olinfo_status |= IXGBE_TXD_POPTS_TXSM << - IXGBE_ADVTXD_POPTS_SHIFT; - - if (tx_flags & IXGBE_TX_FLAGS_FCOE) { - olinfo_status |= IXGBE_ADVTXD_CC; - olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT); - if (tx_flags & IXGBE_TX_FLAGS_FSO) - cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; - } - - olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT); - - i = tx_ring->next_to_use; - while (count--) { - tx_buffer_info = &tx_ring->tx_buffer_info[i]; - tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i); - tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma); - tx_desc->read.cmd_type_len = - cpu_to_le32(cmd_type_len | tx_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(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, tx_ring->tail); -} - -static void ixgbe_atr(struct ixgbe_ring *ring, struct sk_buff *skb, - u32 tx_flags, __be16 protocol) -{ - struct ixgbe_q_vector *q_vector = ring->q_vector; - union ixgbe_atr_hash_dword input = { .dword = 0 }; - union ixgbe_atr_hash_dword common = { .dword = 0 }; - union { - unsigned char *network; - struct iphdr *ipv4; - struct ipv6hdr *ipv6; - } hdr; - struct tcphdr *th; - __be16 vlan_id; - - /* if ring doesn't have a interrupt vector, cannot perform ATR */ - if (!q_vector) - return; - - /* do nothing if sampling is disabled */ - if (!ring->atr_sample_rate) - return; - - ring->atr_count++; - - /* snag network header to get L4 type and address */ - hdr.network = skb_network_header(skb); - - /* Currently only IPv4/IPv6 with TCP is supported */ - if ((protocol != __constant_htons(ETH_P_IPV6) || - hdr.ipv6->nexthdr != IPPROTO_TCP) && - (protocol != __constant_htons(ETH_P_IP) || - hdr.ipv4->protocol != IPPROTO_TCP)) - return; - - th = tcp_hdr(skb); - - /* skip this packet since the socket is closing */ - if (th->fin) - return; - - /* sample on all syn packets or once every atr sample count */ - if (!th->syn && (ring->atr_count < ring->atr_sample_rate)) - return; - - /* reset sample count */ - ring->atr_count = 0; - - vlan_id = htons(tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT); - - /* - * src and dst are inverted, think how the receiver sees them - * - * The input is broken into two sections, a non-compressed section - * containing vm_pool, vlan_id, and flow_type. The rest of the data - * is XORed together and stored in the compressed dword. - */ - input.formatted.vlan_id = vlan_id; - - /* - * since src port and flex bytes occupy the same word XOR them together - * and write the value to source port portion of compressed dword - */ - if (vlan_id) - common.port.src ^= th->dest ^ __constant_htons(ETH_P_8021Q); - else - common.port.src ^= th->dest ^ protocol; - common.port.dst ^= th->source; - - if (protocol == __constant_htons(ETH_P_IP)) { - input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4; - common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr; - } else { - input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6; - common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^ - hdr.ipv6->saddr.s6_addr32[1] ^ - hdr.ipv6->saddr.s6_addr32[2] ^ - hdr.ipv6->saddr.s6_addr32[3] ^ - hdr.ipv6->daddr.s6_addr32[0] ^ - hdr.ipv6->daddr.s6_addr32[1] ^ - hdr.ipv6->daddr.s6_addr32[2] ^ - hdr.ipv6->daddr.s6_addr32[3]; - } - - /* This assumes the Rx queue and Tx queue are bound to the same CPU */ - ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw, - input, common, ring->queue_index); -} - -static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) -{ - netif_stop_subqueue(tx_ring->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 (likely(ixgbe_desc_unused(tx_ring) < size)) - return -EBUSY; - - /* A reprieve! - use start_queue because it doesn't call schedule */ - netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index); - ++tx_ring->tx_stats.restart_queue; - return 0; -} - -static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) -{ - if (likely(ixgbe_desc_unused(tx_ring) >= size)) - return 0; - return __ixgbe_maybe_stop_tx(tx_ring, size); -} - -static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb) -{ - struct ixgbe_adapter *adapter = netdev_priv(dev); - int txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : - smp_processor_id(); -#ifdef IXGBE_FCOE - __be16 protocol = vlan_get_protocol(skb); - - if (((protocol == htons(ETH_P_FCOE)) || - (protocol == htons(ETH_P_FIP))) && - (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) { - txq &= (adapter->ring_feature[RING_F_FCOE].indices - 1); - txq += adapter->ring_feature[RING_F_FCOE].mask; - return txq; - } -#endif - - if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { - while (unlikely(txq >= dev->real_num_tx_queues)) - txq -= dev->real_num_tx_queues; - return txq; - } - - return skb_tx_hash(dev, skb); -} - -netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, - struct ixgbe_adapter *adapter, - struct ixgbe_ring *tx_ring) -{ - int tso; - u32 tx_flags = 0; -#if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD - unsigned short f; -#endif - u16 first; - u16 count = TXD_USE_COUNT(skb_headlen(skb)); - __be16 protocol; - u8 hdr_len = 0; - - /* - * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD, - * + 1 desc for skb_head_len/IXGBE_MAX_DATA_PER_TXD, - * + 2 desc gap to keep tail from touching head, - * + 1 desc for context descriptor, - * otherwise try next time - */ -#if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD - for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) - count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); -#else - count += skb_shinfo(skb)->nr_frags; -#endif - if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) { - tx_ring->tx_stats.tx_busy++; - return NETDEV_TX_BUSY; - } - - protocol = vlan_get_protocol(skb); - - if (vlan_tx_tag_present(skb)) { - tx_flags |= vlan_tx_tag_get(skb); - if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { - tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK; - tx_flags |= tx_ring->dcb_tc << 13; - } - tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; - tx_flags |= IXGBE_TX_FLAGS_VLAN; - } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED && - skb->priority != TC_PRIO_CONTROL) { - tx_flags |= tx_ring->dcb_tc << 13; - tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; - tx_flags |= IXGBE_TX_FLAGS_VLAN; - } - -#ifdef IXGBE_FCOE - /* for FCoE with DCB, we force the priority to what - * was specified by the switch */ - if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED && - (protocol == htons(ETH_P_FCOE))) - tx_flags |= IXGBE_TX_FLAGS_FCOE; - -#endif - /* record the location of the first descriptor for this packet */ - first = tx_ring->next_to_use; - - if (tx_flags & IXGBE_TX_FLAGS_FCOE) { -#ifdef IXGBE_FCOE - /* setup tx offload for FCoE */ - tso = ixgbe_fso(tx_ring, skb, tx_flags, &hdr_len); - if (tso < 0) - goto out_drop; - else if (tso) - tx_flags |= IXGBE_TX_FLAGS_FSO; -#endif /* IXGBE_FCOE */ - } else { - if (protocol == htons(ETH_P_IP)) - tx_flags |= IXGBE_TX_FLAGS_IPV4; - tso = ixgbe_tso(tx_ring, skb, tx_flags, protocol, &hdr_len); - if (tso < 0) - goto out_drop; - else if (tso) - tx_flags |= IXGBE_TX_FLAGS_TSO; - else if (ixgbe_tx_csum(tx_ring, skb, tx_flags, protocol)) - tx_flags |= IXGBE_TX_FLAGS_CSUM; - } - - count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first, hdr_len); - if (count) { - /* add the ATR filter if ATR is on */ - if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state)) - ixgbe_atr(tx_ring, skb, tx_flags, protocol); - ixgbe_tx_queue(tx_ring, tx_flags, count, skb->len, hdr_len); - ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED); - - } else { - tx_ring->tx_buffer_info[first].time_stamp = 0; - tx_ring->next_to_use = first; - goto out_drop; - } - - return NETDEV_TX_OK; - -out_drop: - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; -} - -static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - struct ixgbe_ring *tx_ring; - - tx_ring = adapter->tx_ring[skb->queue_mapping]; - return ixgbe_xmit_frame_ring(skb, adapter, tx_ring); -} - -/** - * ixgbe_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 ixgbe_set_mac(struct net_device *netdev, void *p) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - struct ixgbe_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.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs, - IXGBE_RAH_AV); - - return 0; -} - -static int -ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - struct ixgbe_hw *hw = &adapter->hw; - u16 value; - int rc; - - if (prtad != hw->phy.mdio.prtad) - return -EINVAL; - rc = hw->phy.ops.read_reg(hw, addr, devad, &value); - if (!rc) - rc = value; - return rc; -} - -static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad, - u16 addr, u16 value) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - struct ixgbe_hw *hw = &adapter->hw; - - if (prtad != hw->phy.mdio.prtad) - return -EINVAL; - return hw->phy.ops.write_reg(hw, addr, devad, value); -} - -static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - - return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd); -} - -/** - * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding - * netdev->dev_addrs - * @netdev: network interface device structure - * - * Returns non-zero on failure - **/ -static int ixgbe_add_sanmac_netdev(struct net_device *dev) -{ - int err = 0; - struct ixgbe_adapter *adapter = netdev_priv(dev); - struct ixgbe_mac_info *mac = &adapter->hw.mac; - - if (is_valid_ether_addr(mac->san_addr)) { - rtnl_lock(); - err = dev_addr_add(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN); - rtnl_unlock(); - } - return err; -} - -/** - * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding - * netdev->dev_addrs - * @netdev: network interface device structure - * - * Returns non-zero on failure - **/ -static int ixgbe_del_sanmac_netdev(struct net_device *dev) -{ - int err = 0; - struct ixgbe_adapter *adapter = netdev_priv(dev); - struct ixgbe_mac_info *mac = &adapter->hw.mac; - - if (is_valid_ether_addr(mac->san_addr)) { - rtnl_lock(); - err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN); - rtnl_unlock(); - } - return err; -} - -#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 ixgbe_netpoll(struct net_device *netdev) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - int i; - - /* if interface is down do nothing */ - if (test_bit(__IXGBE_DOWN, &adapter->state)) - return; - - adapter->flags |= IXGBE_FLAG_IN_NETPOLL; - if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { - int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; - for (i = 0; i < num_q_vectors; i++) { - struct ixgbe_q_vector *q_vector = adapter->q_vector[i]; - ixgbe_msix_clean_many(0, q_vector); - } - } else { - ixgbe_intr(adapter->pdev->irq, netdev); - } - adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL; -} -#endif - -static struct rtnl_link_stats64 *ixgbe_get_stats64(struct net_device *netdev, - struct rtnl_link_stats64 *stats) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - int i; - - rcu_read_lock(); - for (i = 0; i < adapter->num_rx_queues; i++) { - struct ixgbe_ring *ring = ACCESS_ONCE(adapter->rx_ring[i]); - u64 bytes, packets; - unsigned int start; - - if (ring) { - do { - start = u64_stats_fetch_begin_bh(&ring->syncp); - packets = ring->stats.packets; - bytes = ring->stats.bytes; - } while (u64_stats_fetch_retry_bh(&ring->syncp, start)); - stats->rx_packets += packets; - stats->rx_bytes += bytes; - } - } - - for (i = 0; i < adapter->num_tx_queues; i++) { - struct ixgbe_ring *ring = ACCESS_ONCE(adapter->tx_ring[i]); - u64 bytes, packets; - unsigned int start; - - if (ring) { - do { - start = u64_stats_fetch_begin_bh(&ring->syncp); - packets = ring->stats.packets; - bytes = ring->stats.bytes; - } while (u64_stats_fetch_retry_bh(&ring->syncp, start)); - stats->tx_packets += packets; - stats->tx_bytes += bytes; - } - } - rcu_read_unlock(); - /* following stats updated by ixgbe_watchdog_task() */ - stats->multicast = netdev->stats.multicast; - stats->rx_errors = netdev->stats.rx_errors; - stats->rx_length_errors = netdev->stats.rx_length_errors; - stats->rx_crc_errors = netdev->stats.rx_crc_errors; - stats->rx_missed_errors = netdev->stats.rx_missed_errors; - return stats; -} - -/* ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid. - * #adapter: pointer to ixgbe_adapter - * @tc: number of traffic classes currently enabled - * - * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm - * 802.1Q priority maps to a packet buffer that exists. - */ -static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc) -{ - struct ixgbe_hw *hw = &adapter->hw; - u32 reg, rsave; - int i; - - /* 82598 have a static priority to TC mapping that can not - * be changed so no validation is needed. - */ - if (hw->mac.type == ixgbe_mac_82598EB) - return; - - reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC); - rsave = reg; - - for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { - u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT); - - /* If up2tc is out of bounds default to zero */ - if (up2tc > tc) - reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT); - } - - if (reg != rsave) - IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg); - - return; -} - - -/* ixgbe_setup_tc - routine to configure net_device for multiple traffic - * classes. - * - * @netdev: net device to configure - * @tc: number of traffic classes to enable - */ -int ixgbe_setup_tc(struct net_device *dev, u8 tc) -{ - struct ixgbe_adapter *adapter = netdev_priv(dev); - struct ixgbe_hw *hw = &adapter->hw; - - /* If DCB is anabled do not remove traffic classes, multiple - * traffic classes are required to implement DCB - */ - if (!tc && (adapter->flags & IXGBE_FLAG_DCB_ENABLED)) - return 0; - - /* Hardware supports up to 8 traffic classes */ - if (tc > MAX_TRAFFIC_CLASS || - (hw->mac.type == ixgbe_mac_82598EB && tc < MAX_TRAFFIC_CLASS)) - return -EINVAL; - - /* Hardware has to reinitialize queues and interrupts to - * match packet buffer alignment. Unfortunantly, the - * hardware is not flexible enough to do this dynamically. - */ - if (netif_running(dev)) - ixgbe_close(dev); - ixgbe_clear_interrupt_scheme(adapter); - - if (tc) - netdev_set_num_tc(dev, tc); - else - netdev_reset_tc(dev); - - ixgbe_init_interrupt_scheme(adapter); - ixgbe_validate_rtr(adapter, tc); - if (netif_running(dev)) - ixgbe_open(dev); - - return 0; -} - -void ixgbe_do_reset(struct net_device *netdev) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - - if (netif_running(netdev)) - ixgbe_reinit_locked(adapter); - else - ixgbe_reset(adapter); -} - -static u32 ixgbe_fix_features(struct net_device *netdev, u32 data) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - -#ifdef CONFIG_DCB - if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) - data &= ~NETIF_F_HW_VLAN_RX; -#endif - - /* return error if RXHASH is being enabled when RSS is not supported */ - if (!(adapter->flags & IXGBE_FLAG_RSS_ENABLED)) - data &= ~NETIF_F_RXHASH; - - /* If Rx checksum is disabled, then RSC/LRO should also be disabled */ - if (!(data & NETIF_F_RXCSUM)) - data &= ~NETIF_F_LRO; - - /* Turn off LRO if not RSC capable or invalid ITR settings */ - if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)) { - data &= ~NETIF_F_LRO; - } else if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) && - (adapter->rx_itr_setting != 1 && - adapter->rx_itr_setting > IXGBE_MAX_RSC_INT_RATE)) { - data &= ~NETIF_F_LRO; - e_info(probe, "rx-usecs set too low, not enabling RSC\n"); - } - - return data; -} - -static int ixgbe_set_features(struct net_device *netdev, u32 data) -{ - struct ixgbe_adapter *adapter = netdev_priv(netdev); - bool need_reset = false; - - /* If Rx checksum is disabled, then RSC/LRO should also be disabled */ - if (!(data & NETIF_F_RXCSUM)) - adapter->flags &= ~IXGBE_FLAG_RX_CSUM_ENABLED; - else - adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; - - /* Make sure RSC matches LRO, reset if change */ - if (!!(data & NETIF_F_LRO) != - !!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) { - adapter->flags2 ^= IXGBE_FLAG2_RSC_ENABLED; - switch (adapter->hw.mac.type) { - case ixgbe_mac_X540: - case ixgbe_mac_82599EB: - need_reset = true; - break; - default: - break; - } - } - - /* - * Check if Flow Director n-tuple support was enabled or disabled. If - * the state changed, we need to reset. - */ - if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) { - /* turn off ATR, enable perfect filters and reset */ - if (data & NETIF_F_NTUPLE) { - adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; - adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE; - need_reset = true; - } - } else if (!(data & NETIF_F_NTUPLE)) { - /* turn off Flow Director, set ATR and reset */ - adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE; - if ((adapter->flags & IXGBE_FLAG_RSS_ENABLED) && - !(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) - adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE; - need_reset = true; - } - - if (need_reset) - ixgbe_do_reset(netdev); - - return 0; - -} - -static const struct net_device_ops ixgbe_netdev_ops = { - .ndo_open = ixgbe_open, - .ndo_stop = ixgbe_close, - .ndo_start_xmit = ixgbe_xmit_frame, - .ndo_select_queue = ixgbe_select_queue, - .ndo_set_rx_mode = ixgbe_set_rx_mode, - .ndo_set_multicast_list = ixgbe_set_rx_mode, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = ixgbe_set_mac, - .ndo_change_mtu = ixgbe_change_mtu, - .ndo_tx_timeout = ixgbe_tx_timeout, - .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid, - .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid, - .ndo_do_ioctl = ixgbe_ioctl, - .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac, - .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan, - .ndo_set_vf_tx_rate = ixgbe_ndo_set_vf_bw, - .ndo_get_vf_config = ixgbe_ndo_get_vf_config, - .ndo_get_stats64 = ixgbe_get_stats64, - .ndo_setup_tc = ixgbe_setup_tc, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = ixgbe_netpoll, -#endif -#ifdef IXGBE_FCOE - .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get, - .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target, - .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put, - .ndo_fcoe_enable = ixgbe_fcoe_enable, - .ndo_fcoe_disable = ixgbe_fcoe_disable, - .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn, -#endif /* IXGBE_FCOE */ - .ndo_set_features = ixgbe_set_features, - .ndo_fix_features = ixgbe_fix_features, -}; - -static void __devinit ixgbe_probe_vf(struct ixgbe_adapter *adapter, - const struct ixgbe_info *ii) -{ -#ifdef CONFIG_PCI_IOV - struct ixgbe_hw *hw = &adapter->hw; - int err; - int num_vf_macvlans, i; - struct vf_macvlans *mv_list; - - if (hw->mac.type == ixgbe_mac_82598EB || !max_vfs) - return; - - /* The 82599 supports up to 64 VFs per physical function - * but this implementation limits allocation to 63 so that - * basic networking resources are still available to the - * physical function - */ - adapter->num_vfs = (max_vfs > 63) ? 63 : max_vfs; - adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED; - err = pci_enable_sriov(adapter->pdev, adapter->num_vfs); - if (err) { - e_err(probe, "Failed to enable PCI sriov: %d\n", err); - goto err_novfs; - } - - num_vf_macvlans = hw->mac.num_rar_entries - - (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs); - - adapter->mv_list = mv_list = kcalloc(num_vf_macvlans, - sizeof(struct vf_macvlans), - GFP_KERNEL); - if (mv_list) { - /* Initialize list of VF macvlans */ - INIT_LIST_HEAD(&adapter->vf_mvs.l); - for (i = 0; i < num_vf_macvlans; i++) { - mv_list->vf = -1; - mv_list->free = true; - mv_list->rar_entry = hw->mac.num_rar_entries - - (i + adapter->num_vfs + 1); - list_add(&mv_list->l, &adapter->vf_mvs.l); - mv_list++; - } - } - - /* If call to enable VFs succeeded then allocate memory - * for per VF control structures. - */ - adapter->vfinfo = - kcalloc(adapter->num_vfs, - sizeof(struct vf_data_storage), GFP_KERNEL); - if (adapter->vfinfo) { - /* Now that we're sure SR-IOV is enabled - * and memory allocated set up the mailbox parameters - */ - ixgbe_init_mbx_params_pf(hw); - memcpy(&hw->mbx.ops, ii->mbx_ops, - sizeof(hw->mbx.ops)); - - /* Disable RSC when in SR-IOV mode */ - adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | - IXGBE_FLAG2_RSC_ENABLED); - return; - } - - /* Oh oh */ - e_err(probe, "Unable to allocate memory for VF Data Storage - " - "SRIOV disabled\n"); - pci_disable_sriov(adapter->pdev); - -err_novfs: - adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; - adapter->num_vfs = 0; -#endif /* CONFIG_PCI_IOV */ -} - -/** - * ixgbe_probe - Device Initialization Routine - * @pdev: PCI device information struct - * @ent: entry in ixgbe_pci_tbl - * - * Returns 0 on success, negative on failure - * - * ixgbe_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 ixgbe_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct net_device *netdev; - struct ixgbe_adapter *adapter = NULL; - struct ixgbe_hw *hw; - const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; - static int cards_found; - int i, err, pci_using_dac; - u8 part_str[IXGBE_PBANUM_LENGTH]; - unsigned int indices = num_possible_cpus(); -#ifdef IXGBE_FCOE - u16 device_caps; -#endif - u32 eec; - - /* Catch broken hardware that put the wrong VF device ID in - * the PCIe SR-IOV capability. - */ - if (pdev->is_virtfn) { - WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", - pci_name(pdev), pdev->vendor, pdev->device); - return -EINVAL; - } - - err = pci_enable_device_mem(pdev); - if (err) - return err; - - if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) && - !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { - pci_using_dac = 1; - } else { - err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); - if (err) { - err = dma_set_coherent_mask(&pdev->dev, - DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, - "No usable DMA configuration, aborting\n"); - goto err_dma; - } - } - pci_using_dac = 0; - } - - err = pci_request_selected_regions(pdev, pci_select_bars(pdev, - IORESOURCE_MEM), ixgbe_driver_name); - if (err) { - dev_err(&pdev->dev, - "pci_request_selected_regions failed 0x%x\n", err); - goto err_pci_reg; - } - - pci_enable_pcie_error_reporting(pdev); - - pci_set_master(pdev); - pci_save_state(pdev); - -#ifdef CONFIG_IXGBE_DCB - indices *= MAX_TRAFFIC_CLASS; -#endif - - if (ii->mac == ixgbe_mac_82598EB) - indices = min_t(unsigned int, indices, IXGBE_MAX_RSS_INDICES); - else - indices = min_t(unsigned int, indices, IXGBE_MAX_FDIR_INDICES); - -#ifdef IXGBE_FCOE - indices += min_t(unsigned int, num_possible_cpus(), - IXGBE_MAX_FCOE_INDICES); -#endif - netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices); - if (!netdev) { - err = -ENOMEM; - goto err_alloc_etherdev; - } - - SET_NETDEV_DEV(netdev, &pdev->dev); - - adapter = netdev_priv(netdev); - pci_set_drvdata(pdev, adapter); - - adapter->netdev = netdev; - adapter->pdev = pdev; - hw = &adapter->hw; - hw->back = adapter; - adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; - - hw->hw_addr = ioremap(pci_resource_start(pdev, 0), - pci_resource_len(pdev, 0)); - if (!hw->hw_addr) { - err = -EIO; - goto err_ioremap; - } - - for (i = 1; i <= 5; i++) { - if (pci_resource_len(pdev, i) == 0) - continue; - } - - netdev->netdev_ops = &ixgbe_netdev_ops; - ixgbe_set_ethtool_ops(netdev); - netdev->watchdog_timeo = 5 * HZ; - strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); - - adapter->bd_number = cards_found; - - /* Setup hw api */ - memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); - hw->mac.type = ii->mac; - - /* EEPROM */ - memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops)); - eec = IXGBE_READ_REG(hw, IXGBE_EEC); - /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ - if (!(eec & (1 << 8))) - hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; - - /* PHY */ - memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops)); - hw->phy.sfp_type = ixgbe_sfp_type_unknown; - /* ixgbe_identify_phy_generic will set prtad and mmds properly */ - hw->phy.mdio.prtad = MDIO_PRTAD_NONE; - hw->phy.mdio.mmds = 0; - hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; - hw->phy.mdio.dev = netdev; - hw->phy.mdio.mdio_read = ixgbe_mdio_read; - hw->phy.mdio.mdio_write = ixgbe_mdio_write; - - ii->get_invariants(hw); - - /* setup the private structure */ - err = ixgbe_sw_init(adapter); - if (err) - goto err_sw_init; - - /* Make it possible the adapter to be woken up via WOL */ - switch (adapter->hw.mac.type) { - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); - break; - default: - break; - } - - /* - * If there is a fan on this device and it has failed log the - * failure. - */ - if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { - u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); - if (esdp & IXGBE_ESDP_SDP1) - e_crit(probe, "Fan has stopped, replace the adapter\n"); - } - - /* reset_hw fills in the perm_addr as well */ - hw->phy.reset_if_overtemp = true; - err = hw->mac.ops.reset_hw(hw); - hw->phy.reset_if_overtemp = false; - if (err == IXGBE_ERR_SFP_NOT_PRESENT && - hw->mac.type == ixgbe_mac_82598EB) { - err = 0; - } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { - e_dev_err("failed to load because an unsupported SFP+ " - "module type was detected.\n"); - e_dev_err("Reload the driver after installing a supported " - "module.\n"); - goto err_sw_init; - } else if (err) { - e_dev_err("HW Init failed: %d\n", err); - goto err_sw_init; - } - - ixgbe_probe_vf(adapter, ii); - - netdev->features = NETIF_F_SG | - NETIF_F_IP_CSUM | - NETIF_F_IPV6_CSUM | - NETIF_F_HW_VLAN_TX | - NETIF_F_HW_VLAN_RX | - NETIF_F_HW_VLAN_FILTER | - NETIF_F_TSO | - NETIF_F_TSO6 | - NETIF_F_GRO | - NETIF_F_RXHASH | - NETIF_F_RXCSUM; - - netdev->hw_features = netdev->features; - - switch (adapter->hw.mac.type) { - case ixgbe_mac_82599EB: - case ixgbe_mac_X540: - netdev->features |= NETIF_F_SCTP_CSUM; - netdev->hw_features |= NETIF_F_SCTP_CSUM | - NETIF_F_NTUPLE; - break; - default: - break; - } - - netdev->vlan_features |= NETIF_F_TSO; - netdev->vlan_features |= NETIF_F_TSO6; - netdev->vlan_features |= NETIF_F_IP_CSUM; - netdev->vlan_features |= NETIF_F_IPV6_CSUM; - netdev->vlan_features |= NETIF_F_SG; - - if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) - adapter->flags &= ~(IXGBE_FLAG_RSS_ENABLED | - IXGBE_FLAG_DCB_ENABLED); - -#ifdef CONFIG_IXGBE_DCB - netdev->dcbnl_ops = &dcbnl_ops; -#endif - -#ifdef IXGBE_FCOE - if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) { - if (hw->mac.ops.get_device_caps) { - hw->mac.ops.get_device_caps(hw, &device_caps); - if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS) - adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; - } - } - if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) { - netdev->vlan_features |= NETIF_F_FCOE_CRC; - netdev->vlan_features |= NETIF_F_FSO; - netdev->vlan_features |= NETIF_F_FCOE_MTU; - } -#endif /* IXGBE_FCOE */ - if (pci_using_dac) { - netdev->features |= NETIF_F_HIGHDMA; - netdev->vlan_features |= NETIF_F_HIGHDMA; - } - - if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) - netdev->hw_features |= NETIF_F_LRO; - if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) - netdev->features |= NETIF_F_LRO; - - /* make sure the EEPROM is good */ - if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { - e_dev_err("The EEPROM Checksum Is Not Valid\n"); - err = -EIO; - goto err_eeprom; - } - - memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len); - memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len); - - if (ixgbe_validate_mac_addr(netdev->perm_addr)) { - e_dev_err("invalid MAC address\n"); - err = -EIO; - goto err_eeprom; - } - - /* power down the optics for multispeed fiber and 82599 SFP+ fiber */ - if (hw->mac.ops.disable_tx_laser && - ((hw->phy.multispeed_fiber) || - ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) && - (hw->mac.type == ixgbe_mac_82599EB)))) - hw->mac.ops.disable_tx_laser(hw); - - setup_timer(&adapter->service_timer, &ixgbe_service_timer, - (unsigned long) adapter); - - INIT_WORK(&adapter->service_task, ixgbe_service_task); - clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); - - err = ixgbe_init_interrupt_scheme(adapter); - if (err) - goto err_sw_init; - - if (!(adapter->flags & IXGBE_FLAG_RSS_ENABLED)) { - netdev->hw_features &= ~NETIF_F_RXHASH; - netdev->features &= ~NETIF_F_RXHASH; - } - - switch (pdev->device) { - case IXGBE_DEV_ID_82599_SFP: - /* Only this subdevice supports WOL */ - if (pdev->subsystem_device == IXGBE_SUBDEV_ID_82599_SFP) - adapter->wol = IXGBE_WUFC_MAG; - break; - case IXGBE_DEV_ID_82599_COMBO_BACKPLANE: - /* All except this subdevice support WOL */ - if (pdev->subsystem_device != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ) - adapter->wol = IXGBE_WUFC_MAG; - break; - case IXGBE_DEV_ID_82599_KX4: - adapter->wol = IXGBE_WUFC_MAG; - break; - default: - adapter->wol = 0; - break; - } - device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); - - /* pick up the PCI bus settings for reporting later */ - hw->mac.ops.get_bus_info(hw); - - /* print bus type/speed/width info */ - e_dev_info("(PCI Express:%s:%s) %pM\n", - (hw->bus.speed == ixgbe_bus_speed_5000 ? "5.0GT/s" : - hw->bus.speed == ixgbe_bus_speed_2500 ? "2.5GT/s" : - "Unknown"), - (hw->bus.width == ixgbe_bus_width_pcie_x8 ? "Width x8" : - hw->bus.width == ixgbe_bus_width_pcie_x4 ? "Width x4" : - hw->bus.width == ixgbe_bus_width_pcie_x1 ? "Width x1" : - "Unknown"), - netdev->dev_addr); - - err = ixgbe_read_pba_string_generic(hw, part_str, IXGBE_PBANUM_LENGTH); - if (err) - strncpy(part_str, "Unknown", IXGBE_PBANUM_LENGTH); - if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present) - e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n", - hw->mac.type, hw->phy.type, hw->phy.sfp_type, - part_str); - else - e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n", - hw->mac.type, hw->phy.type, part_str); - - if (hw->bus.width <= ixgbe_bus_width_pcie_x4) { - e_dev_warn("PCI-Express bandwidth available for this card is " - "not sufficient for optimal performance.\n"); - e_dev_warn("For optimal performance a x8 PCI-Express slot " - "is required.\n"); - } - - /* save off EEPROM version number */ - hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version); - - /* reset the hardware with the new settings */ - err = hw->mac.ops.start_hw(hw); - - if (err == IXGBE_ERR_EEPROM_VERSION) { - /* We are running on a pre-production device, log a warning */ - e_dev_warn("This device is a pre-production adapter/LOM. " - "Please be aware there may be issues associated " - "with your hardware. If you are experiencing " - "problems please contact your Intel or hardware " - "representative who provided you with this " - "hardware.\n"); - } - 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_IXGBE_DCA - if (dca_add_requester(&pdev->dev) == 0) { - adapter->flags |= IXGBE_FLAG_DCA_ENABLED; - ixgbe_setup_dca(adapter); - } -#endif - if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { - e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs); - for (i = 0; i < adapter->num_vfs; i++) - ixgbe_vf_configuration(pdev, (i | 0x10000000)); - } - - /* Inform firmware of driver version */ - if (hw->mac.ops.set_fw_drv_ver) - hw->mac.ops.set_fw_drv_ver(hw, MAJ, MIN, BUILD, - FW_CEM_UNUSED_VER); - - /* add san mac addr to netdev */ - ixgbe_add_sanmac_netdev(netdev); - - e_dev_info("Intel(R) 10 Gigabit Network Connection\n"); - cards_found++; - return 0; - -err_register: - ixgbe_release_hw_control(adapter); - ixgbe_clear_interrupt_scheme(adapter); -err_sw_init: -err_eeprom: - if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) - ixgbe_disable_sriov(adapter); - adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; - 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; -} - -/** - * ixgbe_remove - Device Removal Routine - * @pdev: PCI device information struct - * - * ixgbe_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 ixgbe_remove(struct pci_dev *pdev) -{ - struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); - struct net_device *netdev = adapter->netdev; - - set_bit(__IXGBE_DOWN, &adapter->state); - cancel_work_sync(&adapter->service_task); - -#ifdef CONFIG_IXGBE_DCA - if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { - adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; - dca_remove_requester(&pdev->dev); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1); - } - -#endif -#ifdef IXGBE_FCOE - if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) - ixgbe_cleanup_fcoe(adapter); - -#endif /* IXGBE_FCOE */ - - /* remove the added san mac */ - ixgbe_del_sanmac_netdev(netdev); - - if (netdev->reg_state == NETREG_REGISTERED) - unregister_netdev(netdev); - - if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) - ixgbe_disable_sriov(adapter); - - ixgbe_clear_interrupt_scheme(adapter); - - ixgbe_release_hw_control(adapter); - - iounmap(adapter->hw.hw_addr); - pci_release_selected_regions(pdev, pci_select_bars(pdev, - IORESOURCE_MEM)); - - e_dev_info("complete\n"); - - free_netdev(netdev); - - pci_disable_pcie_error_reporting(pdev); - - pci_disable_device(pdev); -} - -/** - * ixgbe_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 ixgbe_io_error_detected(struct pci_dev *pdev, - pci_channel_state_t state) -{ - struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); - struct net_device *netdev = adapter->netdev; - - netif_device_detach(netdev); - - if (state == pci_channel_io_perm_failure) - return PCI_ERS_RESULT_DISCONNECT; - - if (netif_running(netdev)) - ixgbe_down(adapter); - pci_disable_device(pdev); - - /* Request a slot reset. */ - return PCI_ERS_RESULT_NEED_RESET; -} - -/** - * ixgbe_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. - */ -static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) -{ - struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); - pci_ers_result_t result; - int err; - - if (pci_enable_device_mem(pdev)) { - e_err(probe, "Cannot re-enable PCI device after reset.\n"); - result = PCI_ERS_RESULT_DISCONNECT; - } else { - pci_set_master(pdev); - pci_restore_state(pdev); - pci_save_state(pdev); - - pci_wake_from_d3(pdev, false); - - ixgbe_reset(adapter); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); - result = PCI_ERS_RESULT_RECOVERED; - } - - err = pci_cleanup_aer_uncorrect_error_status(pdev); - if (err) { - e_dev_err("pci_cleanup_aer_uncorrect_error_status " - "failed 0x%0x\n", err); - /* non-fatal, continue */ - } - - return result; -} - -/** - * ixgbe_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. - */ -static void ixgbe_io_resume(struct pci_dev *pdev) -{ - struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); - struct net_device *netdev = adapter->netdev; - - if (netif_running(netdev)) { - if (ixgbe_up(adapter)) { - e_info(probe, "ixgbe_up failed after reset\n"); - return; - } - } - - netif_device_attach(netdev); -} - -static struct pci_error_handlers ixgbe_err_handler = { - .error_detected = ixgbe_io_error_detected, - .slot_reset = ixgbe_io_slot_reset, - .resume = ixgbe_io_resume, -}; - -static struct pci_driver ixgbe_driver = { - .name = ixgbe_driver_name, - .id_table = ixgbe_pci_tbl, - .probe = ixgbe_probe, - .remove = __devexit_p(ixgbe_remove), -#ifdef CONFIG_PM - .suspend = ixgbe_suspend, - .resume = ixgbe_resume, -#endif - .shutdown = ixgbe_shutdown, - .err_handler = &ixgbe_err_handler -}; - -/** - * ixgbe_init_module - Driver Registration Routine - * - * ixgbe_init_module is the first routine called when the driver is - * loaded. All it does is register with the PCI subsystem. - **/ -static int __init ixgbe_init_module(void) -{ - int ret; - pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version); - pr_info("%s\n", ixgbe_copyright); - -#ifdef CONFIG_IXGBE_DCA - dca_register_notify(&dca_notifier); -#endif - - ret = pci_register_driver(&ixgbe_driver); - return ret; -} - -module_init(ixgbe_init_module); - -/** - * ixgbe_exit_module - Driver Exit Cleanup Routine - * - * ixgbe_exit_module is called just before the driver is removed - * from memory. - **/ -static void __exit ixgbe_exit_module(void) -{ -#ifdef CONFIG_IXGBE_DCA - dca_unregister_notify(&dca_notifier); -#endif - pci_unregister_driver(&ixgbe_driver); - rcu_barrier(); /* Wait for completion of call_rcu()'s */ -} - -#ifdef CONFIG_IXGBE_DCA -static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, - void *p) -{ - int ret_val; - - ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, - __ixgbe_notify_dca); - - return ret_val ? NOTIFY_BAD : NOTIFY_DONE; -} - -#endif /* CONFIG_IXGBE_DCA */ - -module_exit(ixgbe_exit_module); - -/* ixgbe_main.c */ |