| /******************************************************************************* |
| |
| Intel 10 Gigabit PCI Express Linux driver |
| Copyright(c) 1999 - 2010 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/ip.h> |
| #include <linux/tcp.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 <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 DRV_VERSION "3.0.12-k2" |
| const char ixgbe_driver_version[] = DRV_VERSION; |
| static char ixgbe_copyright[] = "Copyright (c) 1999-2010 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 }, |
| |
| /* 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); |
| |
| /* 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; |
| } |
| |
| 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 */ |
| } |
| |
| /** |
| * ixgbe_dcb_txq_to_tc - convert a reg index to a traffic class |
| * @adapter: driver private struct |
| * @index: reg idx of queue to query (0-127) |
| * |
| * Helper function to determine the traffic index for a paticular |
| * register index. |
| * |
| * Returns : a tc index for use in range 0-7, or 0-3 |
| */ |
| u8 ixgbe_dcb_txq_to_tc(struct ixgbe_adapter *adapter, u8 reg_idx) |
| { |
| int tc = -1; |
| int dcb_i = adapter->ring_feature[RING_F_DCB].indices; |
| |
| /* if DCB is not enabled the queues have no TC */ |
| if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) |
| return tc; |
| |
| /* check valid range */ |
| if (reg_idx >= adapter->hw.mac.max_tx_queues) |
| return tc; |
| |
| switch (adapter->hw.mac.type) { |
| case ixgbe_mac_82598EB: |
| tc = reg_idx >> 2; |
| break; |
| default: |
| if (dcb_i != 4 && dcb_i != 8) |
| break; |
| |
| /* if VMDq is enabled the lowest order bits determine TC */ |
| if (adapter->flags & (IXGBE_FLAG_SRIOV_ENABLED | |
| IXGBE_FLAG_VMDQ_ENABLED)) { |
| tc = reg_idx & (dcb_i - 1); |
| break; |
| } |
| |
| /* |
| * Convert the reg_idx into the correct TC. This bitmask |
| * targets the last full 32 ring traffic class and assigns |
| * it a value of 1. From there the rest of the rings are |
| * based on shifting the mask further up to include the |
| * reg_idx / 16 and then reg_idx / 8. It assumes dcB_i |
| * will only ever be 8 or 4 and that reg_idx will never |
| * be greater then 128. The code without the power of 2 |
| * optimizations would be: |
| * (((reg_idx % 32) + 32) * dcb_i) >> (9 - reg_idx / 32) |
| */ |
| tc = ((reg_idx & 0X1F) + 0x20) * dcb_i; |
| tc >>= 9 - (reg_idx >> 5); |
| } |
| |
| return tc; |
| } |
| |
| 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]; |
| u32 tc = ixgbe_dcb_txq_to_tc(adapter, tx_ring->reg_idx); |
| |
| 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; |
| } |
| |
| #define IXGBE_MAX_TXD_PWR 14 |
| #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR) |
| |
| /* Tx Descriptors needed, worst case */ |
| #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \ |
| (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) |
| #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \ |
| MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */ |
| |
| static void ixgbe_tx_timeout(struct net_device *netdev); |
| |
| /** |
| * 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 < tx_ring->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->total_bytes += total_bytes; |
| tx_ring->total_packets += total_packets; |
| u64_stats_update_begin(&tx_ring->syncp); |
| tx_ring->stats.packets += total_packets; |
| tx_ring->stats.bytes += total_bytes; |
| 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(adapter->netdev); |
| |
| /* 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 < tx_ring->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); |
| rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN | |
| IXGBE_DCA_RXCTRL_DESC_HSRO_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; |
| txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_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; |
| txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_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->txr_idx, adapter->num_tx_queues); |
| for (i = 0; i < q_vector->txr_count; i++) { |
| ixgbe_update_tx_dca(adapter, adapter->tx_ring[r_idx], cpu); |
| r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
| r_idx + 1); |
| } |
| |
| r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
| for (i = 0; i < q_vector->rxr_count; i++) { |
| ixgbe_update_rx_dca(adapter, adapter->rx_ring[r_idx], cpu); |
| r_idx = find_next_bit(q_vector->rxr_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_ENABLED)) |
| 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 */ |
| /** |
| * 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 |
| **/ |
| static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter, |
| union ixgbe_adv_rx_desc *rx_desc, |
| struct sk_buff *skb) |
| { |
| u32 status_err = le32_to_cpu(rx_desc->wb.upper.status_error); |
| |
| skb_checksum_none_assert(skb); |
| |
| /* 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 (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) { |
| /* trim packet back to size 0 and recycle it */ |
| __pskb_trim(skb, 0); |
| rx_buffer_info->skb = skb; |
| goto next_desc; |
| } |
| |
| ixgbe_rx_checksum(adapter, 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 (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) { |
| ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb); |
| if (!ddp_bytes) |
| 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 */ |
| |
| rx_ring->total_packets += total_rx_packets; |
| rx_ring->total_bytes += total_rx_bytes; |
| 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); |
| } |
| |
| 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->rxr_idx, |
| adapter->num_rx_queues); |
| |
| for (i = 0; i < q_vector->rxr_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->rxr_idx, |
| adapter->num_rx_queues, |
| r_idx + 1); |
| } |
| r_idx = find_first_bit(q_vector->txr_idx, |
| adapter->num_tx_queues); |
| |
| for (i = 0; i < q_vector->txr_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->txr_idx, |
| adapter->num_tx_queues, |
| r_idx + 1); |
| } |
| |
| if (q_vector->txr_count && !q_vector->rxr_count) |
| /* tx only */ |
| q_vector->eitr = adapter->tx_eitr_param; |
| else if (q_vector->rxr_count) |
| /* rx or mixed */ |
| q_vector->eitr = adapter->rx_eitr_param; |
| |
| ixgbe_write_eitr(q_vector); |
| /* If Flow Director is enabled, set interrupt affinity */ |
| if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) || |
| (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_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 |
| * @adapter: pointer to adapter |
| * @eitr: eitr setting (ints per sec) to give last timeslice |
| * @itr_setting: current throttle rate in ints/second |
| * @packets: the number of packets during this measurement interval |
| * @bytes: the number of bytes during this measurement interval |
| * |
| * 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 u8 ixgbe_update_itr(struct ixgbe_adapter *adapter, |
| u32 eitr, u8 itr_setting, |
| int packets, int bytes) |
| { |
| unsigned int retval = itr_setting; |
| u32 timepassed_us; |
| u64 bytes_perint; |
| |
| if (packets == 0) |
| goto update_itr_done; |
| |
| |
| /* 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/eitr; |
| bytes_perint = bytes / timepassed_us; /* bytes/usec */ |
| |
| switch (itr_setting) { |
| case lowest_latency: |
| if (bytes_perint > adapter->eitr_low) |
| retval = low_latency; |
| break; |
| case low_latency: |
| if (bytes_perint > adapter->eitr_high) |
| retval = bulk_latency; |
| else if (bytes_perint <= adapter->eitr_low) |
| retval = lowest_latency; |
| break; |
| case bulk_latency: |
| if (bytes_perint <= adapter->eitr_high) |
| retval = low_latency; |
| break; |
| } |
| |
| update_itr_done: |
| return retval; |
| } |
| |
| /** |
| * 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_msix(struct ixgbe_q_vector *q_vector) |
| { |
| struct ixgbe_adapter *adapter = q_vector->adapter; |
| int i, r_idx; |
| u32 new_itr; |
| u8 current_itr, ret_itr; |
| |
| r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); |
| for (i = 0; i < q_vector->txr_count; i++) { |
| struct ixgbe_ring *tx_ring = adapter->tx_ring[r_idx]; |
| ret_itr = ixgbe_update_itr(adapter, q_vector->eitr, |
| q_vector->tx_itr, |
| tx_ring->total_packets, |
| tx_ring->total_bytes); |
| /* if the result for this queue would decrease interrupt |
| * rate for this vector then use that result */ |
| q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ? |
| q_vector->tx_itr - 1 : ret_itr); |
| r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
| r_idx + 1); |
| } |
| |
| r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
| for (i = 0; i < q_vector->rxr_count; i++) { |
| struct ixgbe_ring *rx_ring = adapter->rx_ring[r_idx]; |
| ret_itr = ixgbe_update_itr(adapter, q_vector->eitr, |
| q_vector->rx_itr, |
| rx_ring->total_packets, |
| rx_ring->total_bytes); |
| /* if the result for this queue would decrease interrupt |
| * rate for this vector then use that result */ |
| q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ? |
| q_vector->rx_itr - 1 : ret_itr); |
| r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, |
| r_idx + 1); |
| } |
| |
| 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: |
| default: |
| new_itr = 8000; |
| 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, not the smoothed one */ |
| q_vector->eitr = new_itr; |
| |
| ixgbe_write_eitr(q_vector); |
| } |
| } |
| |
| /** |
| * ixgbe_check_overtemp_task - worker thread to check over tempurature |
| * @work: pointer to work_struct containing our data |
| **/ |
| static void ixgbe_check_overtemp_task(struct work_struct *work) |
| { |
| struct ixgbe_adapter *adapter = container_of(work, |
| struct ixgbe_adapter, |
| check_overtemp_task); |
| struct ixgbe_hw *hw = &adapter->hw; |
| u32 eicr = adapter->interrupt_event; |
| |
| if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)) |
| return; |
| |
| switch (hw->device_id) { |
| case IXGBE_DEV_ID_82599_T3_LOM: { |
| u32 autoneg; |
| bool link_up = false; |
| |
| if (hw->mac.ops.check_link) |
| hw->mac.ops.check_link(hw, &autoneg, &link_up, false); |
| |
| if (((eicr & IXGBE_EICR_GPI_SDP0) && (!link_up)) || |
| (eicr & IXGBE_EICR_LSC)) |
| /* Check if this is due to overtemp */ |
| if (hw->phy.ops.check_overtemp(hw) == IXGBE_ERR_OVERTEMP) |
| break; |
| return; |
| } |
| 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"); |
| /* write to clear the interrupt */ |
| IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP0); |
| } |
| |
| 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)) |
| schedule_work(&adapter->sfp_config_module_task); |
| } |
| |
| 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)) |
| schedule_work(&adapter->multispeed_fiber_task); |
| } |
| } |
| |
| 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); |
| schedule_work(&adapter->watchdog_task); |
| } |
| } |
| |
| static irqreturn_t ixgbe_msix_lsc(int irq, void *data) |
| { |
| struct net_device *netdev = data; |
| struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 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: |
| ixgbe_check_sfp_event(adapter, eicr); |
| if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) && |
| ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC))) { |
| adapter->interrupt_event = eicr; |
| schedule_work(&adapter->check_overtemp_task); |
| } |
| /* now fallthrough to handle Flow Director */ |
| case ixgbe_mac_X540: |
| /* Handle Flow Director Full threshold interrupt */ |
| if (eicr & IXGBE_EICR_FLOW_DIR) { |
| int i; |
| IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_FLOW_DIR); |
| /* Disable transmits before FDIR Re-initialization */ |
| netif_tx_stop_all_queues(netdev); |
| for (i = 0; i < adapter->num_tx_queues; i++) { |
| struct ixgbe_ring *tx_ring = |
| adapter->tx_ring[i]; |
| if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE, |
| &tx_ring->state)) |
| schedule_work(&adapter->fdir_reinit_task); |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| |
| ixgbe_check_fan_failure(adapter, eicr); |
| |
| if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
| IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER); |
| |
| 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->txr_count) |
| return IRQ_HANDLED; |
| |
| r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); |
| for (i = 0; i < q_vector->txr_count; i++) { |
| tx_ring = adapter->tx_ring[r_idx]; |
| tx_ring->total_bytes = 0; |
| tx_ring->total_packets = 0; |
| r_idx = find_next_bit(q_vector->txr_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->rxr_idx, adapter->num_rx_queues); |
| for (i = 0; i < q_vector->rxr_count; i++) { |
| rx_ring = adapter->rx_ring[r_idx]; |
| rx_ring->total_bytes = 0; |
| rx_ring->total_packets = 0; |
| r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, |
| r_idx + 1); |
| } |
| |
| if (!q_vector->rxr_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->txr_count && !q_vector->rxr_count) |
| return IRQ_HANDLED; |
| |
| r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); |
| for (i = 0; i < q_vector->txr_count; i++) { |
| ring = adapter->tx_ring[r_idx]; |
| ring->total_bytes = 0; |
| ring->total_packets = 0; |
| r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
| r_idx + 1); |
| } |
| |
| r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
| for (i = 0; i < q_vector->rxr_count; i++) { |
| ring = adapter->rx_ring[r_idx]; |
| ring->total_bytes = 0; |
| ring->total_packets = 0; |
| r_idx = find_next_bit(q_vector->rxr_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->rxr_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_msix(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->txr_idx, adapter->num_tx_queues); |
| for (i = 0; i < q_vector->txr_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->txr_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->rxr_count ?: 1); |
| budget = max(budget, 1); |
| r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
| for (i = 0; i < q_vector->rxr_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->rxr_idx, adapter->num_rx_queues, |
| r_idx + 1); |
| } |
| |
| r_idx = find_first_bit(q_vector->rxr_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_msix(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->txr_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_msix(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->rxr_idx); |
| q_vector->rxr_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->txr_idx); |
| q_vector->txr_count++; |
| tx_ring->q_vector = q_vector; |
| } |
| |
| /** |
| * 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)->rxr_count && (_v)->txr_count) \ |
| ? &ixgbe_msix_clean_many : \ |
| (_v)->rxr_count ? &ixgbe_msix_clean_rx : \ |
| (_v)->txr_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, netdev); |
| 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; |
| } |
| |
| static void ixgbe_set_itr(struct ixgbe_adapter *adapter) |
| { |
| struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; |
| struct ixgbe_ring *rx_ring = adapter->rx_ring[0]; |
| struct ixgbe_ring *tx_ring = adapter->tx_ring[0]; |
| u32 new_itr = q_vector->eitr; |
| u8 current_itr; |
| |
| q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr, |
| q_vector->tx_itr, |
| tx_ring->total_packets, |
| tx_ring->total_bytes); |
| q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr, |
| q_vector->rx_itr, |
| rx_ring->total_packets, |
| rx_ring->total_bytes); |
| |
| 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_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 || |
| adapter->flags & IXGBE_FLAG_FDIR_PERFECT_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 net_device *netdev = data; |
| struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 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))) { |
| adapter->interrupt_event = eicr; |
| schedule_work(&adapter->check_overtemp_task); |
| } |
| break; |
| default: |
| break; |
| } |
| |
| ixgbe_check_fan_failure(adapter, eicr); |
| |
| if (napi_schedule_prep(&(q_vector->napi))) { |
| adapter->tx_ring[0]->total_packets = 0; |
| adapter->tx_ring[0]->total_bytes = 0; |
| adapter->rx_ring[0]->total_packets = 0; |
| adapter->rx_ring[0]->total_bytes = 0; |
| /* 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->rxr_idx, MAX_RX_QUEUES); |
| bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES); |
| q_vector->rxr_count = 0; |
| q_vector->txr_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, netdev); |
| } else { |
| err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED, |
| netdev->name, netdev); |
| } |
| |
| if (err) |
| e_err(probe, "request_irq failed, Error %d\n", err); |
| |
| return err; |
| } |
| |
| static void ixgbe_free_irq(struct ixgbe_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| |
| 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, netdev); |
| |
| i--; |
| for (; i >= 0; i--) { |
| free_irq(adapter->msix_entries[i].vector, |
| adapter->q_vector[i]); |
| } |
| |
| ixgbe_reset_q_vectors(adapter); |
| } else { |
| free_irq(adapter->pdev->irq, netdev); |
| } |
| } |
| |
| /** |
| * 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 { |
| msleep(1); |
| 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 mask; |
| |
| 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 */ |
| mask = (IXGBE_FLAG_SRIOV_ENABLED | IXGBE_FLAG_DCB_ENABLED); |
| switch (adapter->flags & mask) { |
| |
| case (IXGBE_FLAG_SRIOV_ENABLED): |
| IXGBE_WRITE_REG(hw, IXGBE_MTQC, |
| (IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF)); |
| break; |
| |
| case (IXGBE_FLAG_DCB_ENABLED): |
| /* We enable 8 traffic classes, DCB only */ |
| IXGBE_WRITE_REG(hw, IXGBE_MTQC, |
| (IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ)); |
| break; |
| |
| default: |
| IXGBE_WRITE_REG(hw, IXGBE_MTQC, IXGBE_MTQC_64Q_1PB); |
| 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; |
| int mask; |
| |
| /* 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 == adapter->ring_feature[RING_F_RSS].indices) |
| 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) |
| mask = adapter->flags & IXGBE_FLAG_RSS_ENABLED; |
| else |
| mask = adapter->flags & (IXGBE_FLAG_RSS_ENABLED |
| #ifdef CONFIG_IXGBE_DCB |
| | IXGBE_FLAG_DCB_ENABLED |
| #endif |
| | IXGBE_FLAG_SRIOV_ENABLED |
| ); |
| |
| switch (mask) { |
| case (IXGBE_FLAG_RSS_ENABLED): |
| mrqc = IXGBE_MRQC_RSSEN; |
| break; |
| case (IXGBE_FLAG_SRIOV_ENABLED): |
| mrqc = IXGBE_MRQC_VMDQEN; |
| break; |
| #ifdef CONFIG_IXGBE_DCB |
| case (IXGBE_FLAG_DCB_ENABLED): |
| mrqc = IXGBE_MRQC_RT8TCEN; |
| break; |
| #endif /* CONFIG_IXGBE_DCB */ |
| 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_clear_rscctl - disable RSC for the indicated ring |
| * @adapter: address of board private structure |
| * @ring: structure containing ring specific data |
| **/ |
| void ixgbe_clear_rscctl(struct ixgbe_adapter *adapter, |
| struct ixgbe_ring *ring) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| u32 rscctrl; |
| u8 reg_idx = ring->reg_idx; |
| |
| rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx)); |
| rscctrl &= ~IXGBE_RSCCTL_RSCEN; |
| IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl); |
| } |
| |
| /** |
| * ixgbe_configure_rscctl - enable RSC for the indicated ring |
| * @adapter: address of board private structure |
| * @index: index of ring to set |
| **/ |
| 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 { |
| msleep(1); |
| 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_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_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), |
| rxdctl & ~IXGBE_RXDCTL_ENABLE); |
| IXGBE_WRITE_FLUSH(hw); |
| |
| 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 (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->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 */ |
| /* Do not use packet split if we're in SR-IOV Mode */ |
| if (!adapter->num_vfs) |
| 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 = hw->mac.num_rar_entries - (vfn + 1); |
| 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 promiscous 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 promiscous 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->rxr_count || !q_vector->txr_count) { |
| if (q_vector->txr_count == 1) |
| napi->poll = &ixgbe_clean_txonly; |
| else if (q_vector->rxr_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); |
| |
| #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); |
| |
| /* 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 */ |
| ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg); |
| } |
| |
| #endif |
| static void ixgbe_configure(struct ixgbe_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| struct ixgbe_hw *hw = &adapter->hw; |
| int i; |
| |
| #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(hw, adapter->fdir_pballoc); |
| } |
| 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) |
| { |
| struct ixgbe_hw *hw = &adapter->hw; |
| |
| if (hw->phy.multispeed_fiber) { |
| /* |
| * In multispeed fiber setups, the device may not have |
| * had a physical connection when the driver loaded. |
| * If that's the case, the initial link configuration |
| * couldn't get the MAC into 10G or 1G mode, so we'll |
| * never have a link status change interrupt fire. |
| * We need to try and force an autonegotiation |
| * session, then bring up link. |
| */ |
| hw->mac.ops.setup_sfp(hw); |
| if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK)) |
| schedule_work(&adapter->multispeed_fiber_task); |
| } else { |
| /* |
| * Direct Attach Cu and non-multispeed fiber modules |
| * still need to be configured properly prior to |
| * attempting link. |
| */ |
| if (!(adapter->flags & IXGBE_FLAG_IN_SFP_MOD_TASK)) |
| schedule_work(&adapter->sfp_config_module_task); |
| } |
| } |
| |
| /** |
| * 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; |
| |
| if (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"); |
| } |
| |
| /* |
| * For hot-pluggable SFP+ devices, a new SFP+ module may have |
| * arrived before interrupts were enabled but after probe. Such |
| * devices wouldn't have their type identified yet. We need to |
| * kick off the SFP+ module setup first, then try to bring up link. |
| * If we're not hot-pluggable SFP+, we just need to configure link |
| * and bring it up. |
| */ |
| if (hw->phy.type == ixgbe_phy_unknown) |
| schedule_work(&adapter->sfp_config_module_task); |
| |
| /* 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->watchdog_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()); |
| while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) |
| msleep(1); |
| 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; |
| |
| err = hw->mac.ops.init_hw(hw); |
| switch (err) { |
| case 0: |
| case IXGBE_ERR_SFP_NOT_PRESENT: |
| 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); |
| } |
| |
| /* 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]); |
| } |
| |
| void ixgbe_down(struct ixgbe_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| struct ixgbe_hw *hw = &adapter->hw; |
| u32 rxctrl; |
| u32 txdctl; |
| 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 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; |
| } |
| |
| /* disable receives */ |
| rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); |
| IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); |
| |
| IXGBE_WRITE_FLUSH(hw); |
| msleep(10); |
| |
| netif_tx_stop_all_queues(netdev); |
| |
| clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); |
| del_timer_sync(&adapter->sfp_timer); |
| del_timer_sync(&adapter->watchdog_timer); |
| cancel_work_sync(&adapter->watchdog_task); |
| |
| netif_carrier_off(netdev); |
| netif_tx_disable(netdev); |
| |
| ixgbe_irq_disable(adapter); |
| |
| ixgbe_napi_disable_all(adapter); |
| |
| /* 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); |
| } |
| |
| if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE || |
| adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) |
| cancel_work_sync(&adapter->fdir_reinit_task); |
| |
| if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) |
| cancel_work_sync(&adapter->check_overtemp_task); |
| |
| /* 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; |
| txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); |
| IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), |
| (txdctl & ~IXGBE_TXDCTL_ENABLE)); |
| } |
| /* Disable the Tx DMA engine on 82599 */ |
| 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; |
| } |
| |
| /* clear n-tuple filters that are cached */ |
| ethtool_ntuple_flush(netdev); |
| |
| 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(adapter); |
| 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); |
| |
| adapter->tx_timeout_count++; |
| |
| /* Do the reset outside of interrupt context */ |
| schedule_work(&adapter->reset_task); |
| } |
| |
| static void ixgbe_reset_task(struct work_struct *work) |
| { |
| struct ixgbe_adapter *adapter; |
| adapter = container_of(work, struct ixgbe_adapter, reset_task); |
| |
| /* 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"); |
| ixgbe_reinit_locked(adapter); |
| } |
| |
| #ifdef CONFIG_IXGBE_DCB |
| static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter) |
| { |
| bool ret = false; |
| struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_DCB]; |
| |
| if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) |
| return ret; |
| |
| f->mask = 0x7 << 3; |
| adapter->num_rx_queues = f->indices; |
| adapter->num_tx_queues = f->indices; |
| ret = true; |
| |
| return ret; |
| } |
| #endif |
| |
| /** |
| * 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->flags & IXGBE_FLAG_FDIR_PERFECT_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; |
| adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_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) |
| { |
| bool ret = false; |
| struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE]; |
| |
| f->indices = min((int)num_online_cpus(), f->indices); |
| if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) { |
| adapter->num_rx_queues = 1; |
| adapter->num_tx_queues = 1; |
| #ifdef CONFIG_IXGBE_DCB |
| if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
| e_info(probe, "FCoE enabled with DCB\n"); |
| ixgbe_set_dcb_queues(adapter); |
| } |
| #endif |
| if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { |
| e_info(probe, "FCoE enabled with RSS\n"); |
| if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) || |
| (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_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; |
| |
| ret = true; |
| } |
| |
| return ret; |
| } |
| |
| #endif /* IXGBE_FCOE */ |
| /** |
| * 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 dependant |
| * @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 IXGBE_FCOE |
| if (ixgbe_set_fcoe_queues(adapter)) |
| goto done; |
| |
| #endif /* IXGBE_FCOE */ |
| #ifdef CONFIG_IXGBE_DCB |
| if (ixgbe_set_dcb_queues(adapter)) |
| goto done; |
| |
| #endif |
| 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_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) |
| { |
| int i; |
| bool ret = false; |
| int dcb_i = adapter->ring_feature[RING_F_DCB].indices; |
| |
| if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) |
| return false; |
| |
| /* the number of queues is assumed to be symmetric */ |
| switch (adapter->hw.mac.type) { |
| case ixgbe_mac_82598EB: |
| for (i = 0; i < dcb_i; i++) { |
| adapter->rx_ring[i]->reg_idx = i << 3; |
| adapter->tx_ring[i]->reg_idx = i << 2; |
| } |
| ret = true; |
| break; |
| case ixgbe_mac_82599EB: |
| case ixgbe_mac_X540: |
| if (dcb_i == 8) { |
| /* |
| * Tx TC0 starts at: descriptor queue 0 |
| * Tx TC1 starts at: descriptor queue 32 |
| * Tx TC2 starts at: descriptor queue 64 |
| * Tx TC3 starts at: descriptor queue 80 |
| * Tx TC4 starts at: descriptor queue 96 |
| * Tx TC5 starts at: descriptor queue 104 |
| * Tx TC6 starts at: descriptor queue 112 |
| * Tx TC7 starts at: descriptor queue 120 |
| * |
| * Rx TC0-TC7 are offset by 16 queues each |
| */ |
| for (i = 0; i < 3; i++) { |
| adapter->tx_ring[i]->reg_idx = i << 5; |
| adapter->rx_ring[i]->reg_idx = i << 4; |
| } |
| for ( ; i < 5; i++) { |
| adapter->tx_ring[i]->reg_idx = ((i + 2) << 4); |
| adapter->rx_ring[i]->reg_idx = i << 4; |
| } |
| for ( ; i < dcb_i; i++) { |
| adapter->tx_ring[i]->reg_idx = ((i + 8) << 3); |
| adapter->rx_ring[i]->reg_idx = i << 4; |
| } |
| ret = true; |
| } else if (dcb_i == 4) { |
| /* |
| * Tx TC0 starts at: descriptor queue 0 |
| * Tx TC1 starts at: descriptor queue 64 |
| * Tx TC2 starts at: descriptor queue 96 |
| * Tx TC3 starts at: descriptor queue 112 |
| * |
| * Rx TC0-TC3 are offset by 32 queues each |
| */ |
| adapter->tx_ring[0]->reg_idx = 0; |
| adapter->tx_ring[1]->reg_idx = 64; |
| adapter->tx_ring[2]->reg_idx = 96; |
| adapter->tx_ring[3]->reg_idx = 112; |
| for (i = 0 ; i < dcb_i; i++) |
| adapter->rx_ring[i]->reg_idx = i << 5; |
| ret = true; |
| } |
| break; |
| default: |
| break; |
| } |
| return ret; |
| } |
| #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) || |
| (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_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; |
| |
| #ifdef CONFIG_IXGBE_DCB |
| if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
| struct ixgbe_fcoe *fcoe = &adapter->fcoe; |
| |
| ixgbe_cache_ring_dcb(adapter); |
| /* find out queues in TC for FCoE */ |
| fcoe_rx_i = adapter->rx_ring[fcoe->tc]->reg_idx + 1; |
| fcoe_tx_i = adapter->tx_ring[fcoe->tc]->reg_idx + 1; |
| /* |
| * In 82599, the number of Tx queues for each traffic |
| * class for both 8-TC and 4-TC modes are: |
| * TCs : TC0 TC1 TC2 TC3 TC4 TC5 TC6 TC7 |
| * 8 TCs: 32 32 16 16 8 8 8 8 |
| * 4 TCs: 64 64 32 32 |
| * We have max 8 queues for FCoE, where 8 the is |
| * FCoE redirection table size. If TC for FCoE is |
| * less than or equal to TC3, we have enough queues |
| * to add max of 8 queues for FCoE, so we start FCoE |
| * Tx queue from the next one, i.e., reg_idx + 1. |
| * If TC for FCoE is above TC3, implying 8 TC mode, |
| * and we need 8 for FCoE, we have to take all queues |
| * in that traffic class for FCoE. |
| */ |
| if ((f->indices == IXGBE_FCRETA_SIZE) && (fcoe->tc > 3)) |
| fcoe_tx_i--; |
| } |
| #endif /* CONFIG_IXGBE_DCB */ |
| if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { |
| if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) || |
| (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_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 IXGBE_FCOE |
| if (ixgbe_cache_ring_fcoe(adapter)) |
| return; |
| |
| #endif /* IXGBE_FCOE */ |
| #ifdef CONFIG_IXGBE_DCB |
| if (ixgbe_cache_ring_dcb(adapter)) |
| return; |
| |
| #endif |
| 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; |
| adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; |
| adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_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 napi_vectors; |
| int (*poll)(struct napi_struct *, int); |
| |
| if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
| num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
| napi_vectors = adapter->num_rx_queues; |
| poll = &ixgbe_clean_rxtx_many; |
| } else { |
| num_q_vectors = 1; |
| napi_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->txr_count && !q_vector->rxr_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; |
| } |
| |
| static void ring_free_rcu(struct rcu_head *head) |
| { |
| kfree(container_of(head, struct ixgbe_ring, rcu)); |
| } |
| |
| /** |
| * 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. |
| */ |
| call_rcu(&ring->rcu, ring_free_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_sfp_timer - worker thread to find a missing module |
| * @data: pointer to our adapter struct |
| **/ |
| static void ixgbe_sfp_timer(unsigned long data) |
| { |
| struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; |
| |
| /* |
| * Do the sfp_timer outside of interrupt context due to the |
| * delays that sfp+ detection requires |
| */ |
| schedule_work(&adapter->sfp_task); |
| } |
| |
| /** |
| * ixgbe_sfp_task - worker thread to find a missing module |
| * @work: pointer to work_struct containing our data |
| **/ |
| static void ixgbe_sfp_task(struct work_struct *work) |
| { |
| struct ixgbe_adapter *adapter = container_of(work, |
| struct ixgbe_adapter, |
| sfp_task); |
| struct ixgbe_hw *hw = &adapter->hw; |
| |
| if ((hw->phy.type == ixgbe_phy_nl) && |
| (hw->phy.sfp_type == ixgbe_sfp_type_not_present)) { |
| s32 ret = hw->phy.ops.identify_sfp(hw); |
| if (ret == IXGBE_ERR_SFP_NOT_PRESENT) |
| goto reschedule; |
| ret = hw->phy.ops.reset(hw); |
| if (ret == IXGBE_ERR_SFP_NOT_SUPPORTED) { |
| 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); |
| } else { |
| e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type); |
| } |
| /* don't need this routine any more */ |
| clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); |
| } |
| return; |
| reschedule: |
| if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state)) |
| mod_timer(&adapter->sfp_timer, |
| round_jiffies(jiffies + (2 * HZ))); |
| } |
| |
| /** |
| * 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; |
| adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES; |
| 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; |
| if (dev->features & NETIF_F_NTUPLE) { |
| /* Flow Director perfect filter enabled */ |
| adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE; |
| adapter->atr_sample_rate = 0; |
| spin_lock_init(&adapter->fdir_perfect_lock); |
| } else { |
| /* 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 = 0; |
| #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.tc = IXGBE_FCOE_DEFTC; |
| adapter->fcoe.up = IXGBE_FCOE_DEFTC; |
| #endif |
| #endif /* IXGBE_FCOE */ |
| break; |
| default: |
| break; |
| } |
| |
| #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.rx_pba_cfg = pba_equal; |
| adapter->dcb_cfg.pfc_mode_enable = false; |
| adapter->dcb_cfg.round_robin_enable = false; |
| adapter->dcb_set_bitmap = 0x00; |
| ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg, |
| adapter->ring_feature[RING_F_DCB].indices); |
| |
| #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; |
| |
| /* 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; |
| tx_ring->work_limit = tx_ring->count; |
| 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 ((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_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_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_82599EB: |
| case ixgbe_mac_X540: |
| 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_watchdog - Timer Call-back |
| * @data: pointer to adapter cast into an unsigned long |
| **/ |
| static void ixgbe_watchdog(unsigned long data) |
| { |
| struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; |
| struct ixgbe_hw *hw = &adapter->hw; |
| u64 eics = 0; |
| int i; |
| |
| /* |
| * Do the watchdog outside of interrupt context due to the lovely |
| * delays that some of the newer hardware requires |
| */ |
| |
| if (test_bit(__IXGBE_DOWN, &adapter->state)) |
| goto watchdog_short_circuit; |
| |
| 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)); |
| goto watchdog_reschedule; |
| } |
| |
| /* 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->rxr_count || qv->txr_count) |
| eics |= ((u64)1 << i); |
| } |
| |
| /* Cause software interrupt to ensure rx rings are cleaned */ |
| ixgbe_irq_rearm_queues(adapter, eics); |
| |
| watchdog_reschedule: |
| /* Reset the timer */ |
| mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ)); |
| |
| watchdog_short_circuit: |
| schedule_work(&adapter->watchdog_task); |
| } |
| |
| /** |
| * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber |
| * @work: pointer to work_struct containing our data |
| **/ |
| static void ixgbe_multispeed_fiber_task(struct work_struct *work) |
| { |
| struct ixgbe_adapter *adapter = container_of(work, |
| struct ixgbe_adapter, |
| multispeed_fiber_task); |
| struct ixgbe_hw *hw = &adapter->hw; |
| u32 autoneg; |
| bool negotiation; |
| |
| adapter->flags |= IXGBE_FLAG_IN_SFP_LINK_TASK; |
| 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->flags &= ~IXGBE_FLAG_IN_SFP_LINK_TASK; |
| } |
| |
| /** |
| * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module |
| * @work: pointer to work_struct containing our data |
| **/ |
| static void ixgbe_sfp_config_module_task(struct work_struct *work) |
| { |
| struct ixgbe_adapter *adapter = container_of(work, |
| struct ixgbe_adapter, |
| sfp_config_module_task); |
| struct ixgbe_hw *hw = &adapter->hw; |
| u32 err; |
| |
| adapter->flags |= IXGBE_FLAG_IN_SFP_MOD_TASK; |
| |
| /* Time for electrical oscillations to settle down */ |
| msleep(100); |
| err = hw->phy.ops.identify_sfp(hw); |
| |
| if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { |
| 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); |
| return; |
| } |
| hw->mac.ops.setup_sfp(hw); |
| |
| if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK)) |
| /* This will also work for DA Twinax connections */ |
| schedule_work(&adapter->multispeed_fiber_task); |
| adapter->flags &= ~IXGBE_FLAG_IN_SFP_MOD_TASK; |
| } |
| |
| /** |
| * ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table |
| * @work: pointer to work_struct containing our data |
| **/ |
| static void ixgbe_fdir_reinit_task(struct work_struct *work) |
| { |
| struct ixgbe_adapter *adapter = container_of(work, |
| struct ixgbe_adapter, |
| fdir_reinit_task); |
| struct ixgbe_hw *hw = &adapter->hw; |
| int i; |
| |
| 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)); |
| } else { |
| e_err(probe, "failed to finish FDIR re-initialization, " |
| "ignored adding FDIR ATR filters\n"); |
| } |
| /* Done FDIR Re-initialization, enable transmits */ |
| netif_tx_start_all_queues(adapter->netdev); |
| } |
| |
| 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); |
| } |
| |
| static DEFINE_MUTEX(ixgbe_watchdog_lock); |
| |
| /** |
| * ixgbe_watchdog_task - worker thread to bring link up |
| * @work: pointer to work_struct containing our data |
| **/ |
| static void ixgbe_watchdog_task(struct work_struct *work) |
| { |
| struct ixgbe_adapter *adapter = container_of(work, |
| struct ixgbe_adapter, |
| watchdog_task); |
| struct net_device *netdev = adapter->netdev; |
| struct ixgbe_hw *hw = &adapter->hw; |
| u32 link_speed; |
| bool link_up; |
| int i; |
| struct ixgbe_ring *tx_ring; |
| int some_tx_pending = 0; |
| |
| mutex_lock(&ixgbe_watchdog_lock); |
| |
| link_up = adapter->link_up; |
| link_speed = adapter->link_speed; |
| |
| if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) { |
| hw->mac.ops.check_link(hw, &link_speed, &link_up, false); |
| if (link_up) { |
| #ifdef CONFIG_DCB |
| 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); |
| } |
| #else |
| hw->mac.ops.fc_enable(hw, 0); |
| #endif |
| } |
| |
| 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); |
| } |
| adapter->link_up = link_up; |
| adapter->link_speed = link_speed; |
| } |
| |
| if (link_up) { |
| if (!netif_carrier_ok(netdev)) { |
| bool flow_rx, flow_tx; |
| |
| 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_82599EB: |
| case ixgbe_mac_X540: { |
| 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" : "unknown speed")), |
| ((flow_rx && flow_tx) ? "RX/TX" : |
| (flow_rx ? "RX" : |
| (flow_tx ? "TX" : "None")))); |
| |
| netif_carrier_on(netdev); |
| } else { |
| /* Force detection of hung controller */ |
| for (i = 0; i < adapter->num_tx_queues; i++) { |
| tx_ring = adapter->tx_ring[i]; |
| set_check_for_tx_hang(tx_ring); |
| } |
| } |
| } else { |
| adapter->link_up = false; |
| adapter->link_speed = 0; |
| if (netif_carrier_ok(netdev)) { |
| e_info(drv, "NIC Link is Down\n"); |
| netif_carrier_off(netdev); |
| } |
| } |
| |
| if (!netif_carrier_ok(netdev)) { |
| for (i = 0; i < adapter->num_tx_queues; i++) { |
| 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). |
| */ |
| schedule_work(&adapter->reset_task); |
| } |
| } |
| |
| ixgbe_spoof_check(adapter); |
| ixgbe_update_stats(adapter); |
| mutex_unlock(&ixgbe_watchdog_lock); |
| } |
| |
| static int ixgbe_tso(struct ixgbe_adapter *adapter, |
| struct ixgbe_ring *tx_ring, struct sk_buff *skb, |
| u32 tx_flags, u8 *hdr_len, __be16 protocol) |
| { |
| struct ixgbe_adv_tx_context_desc *context_desc; |
| unsigned int i; |
| int err; |
| struct ixgbe_tx_buffer *tx_buffer_info; |
| u32 vlan_macip_lens = 0, type_tucmd_mlhl; |
| u32 mss_l4len_idx, l4len; |
| |
| if (skb_is_gso(skb)) { |
| if (skb_header_cloned(skb)) { |
| err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
| if (err) |
| return err; |
| } |
| l4len = tcp_hdrlen(skb); |
| *hdr_len += l4len; |
| |
| if (protocol == htons(ETH_P_IP)) { |
| struct iphdr *iph = ip_hdr(skb); |
| iph->tot_len = 0; |
| iph->check = 0; |
| tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
| iph->daddr, 0, |
| IPPROTO_TCP, |
| 0); |
| } else if (skb_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); |
| } |
| |
| i = tx_ring->next_to_use; |
| |
| tx_buffer_info = &tx_ring->tx_buffer_info[i]; |
| context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i); |
| |
| /* VLAN MACLEN IPLEN */ |
| if (tx_flags & IXGBE_TX_FLAGS_VLAN) |
| vlan_macip_lens |= |
| (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); |
| vlan_macip_lens |= ((skb_network_offset(skb)) << |
| IXGBE_ADVTXD_MACLEN_SHIFT); |
| *hdr_len += skb_network_offset(skb); |
| vlan_macip_lens |= |
| (skb_transport_header(skb) - skb_network_header(skb)); |
| *hdr_len += |
| (skb_transport_header(skb) - skb_network_header(skb)); |
| context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); |
| context_desc->seqnum_seed = 0; |
| |
| /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
| type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT | |
| IXGBE_ADVTXD_DTYP_CTXT); |
| |
| if (protocol == htons(ETH_P_IP)) |
| type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
| type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; |
| context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); |
| |
| /* MSS L4LEN IDX */ |
| mss_l4len_idx = |
| (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT); |
| mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT); |
| /* use index 1 for TSO */ |
| mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT); |
| context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); |
| |
| tx_buffer_info->time_stamp = jiffies; |
| tx_buffer_info->next_to_watch = i; |
| |
| i++; |
| if (i == tx_ring->count) |
| i = 0; |
| tx_ring->next_to_use = i; |
| |
| return true; |
| } |
| return false; |
| } |
| |
| static u32 ixgbe_psum(struct ixgbe_adapter *adapter, struct sk_buff *skb, |
| __be16 protocol) |
| { |
| u32 rtn = 0; |
| |
| switch (protocol) { |
| case cpu_to_be16(ETH_P_IP): |
| rtn |= IXGBE_ADVTXD_TUCMD_IPV4; |
| switch (ip_hdr(skb)->protocol) { |
| case IPPROTO_TCP: |
| rtn |= IXGBE_ADVTXD_TUCMD_L4T_TCP; |
| break; |
| case IPPROTO_SCTP: |
| rtn |= IXGBE_ADVTXD_TUCMD_L4T_SCTP; |
| break; |
| } |
| break; |
| case cpu_to_be16(ETH_P_IPV6): |
| /* XXX what about other V6 headers?? */ |
| switch (ipv6_hdr(skb)->nexthdr) { |
| case IPPROTO_TCP: |
| rtn |= IXGBE_ADVTXD_TUCMD_L4T_TCP; |
| break; |
| case IPPROTO_SCTP: |
| rtn |= IXGBE_ADVTXD_TUCMD_L4T_SCTP; |
| break; |
| } |
| break; |
| default: |
| if (unlikely(net_ratelimit())) |
| e_warn(probe, "partial checksum but proto=%x!\n", |
| protocol); |
| break; |
| } |
| |
| return rtn; |
| } |
| |
| static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter, |
| struct ixgbe_ring *tx_ring, |
| struct sk_buff *skb, u32 tx_flags, |
| __be16 protocol) |
| { |
| struct ixgbe_adv_tx_context_desc *context_desc; |
| unsigned int i; |
| struct ixgbe_tx_buffer *tx_buffer_info; |
| u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; |
| |
| if (skb->ip_summed == CHECKSUM_PARTIAL || |
| (tx_flags & IXGBE_TX_FLAGS_VLAN)) { |
| i = tx_ring->next_to_use; |
| tx_buffer_info = &tx_ring->tx_buffer_info[i]; |
| context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i); |
| |
| if (tx_flags & IXGBE_TX_FLAGS_VLAN) |
| vlan_macip_lens |= |
| (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); |
| vlan_macip_lens |= (skb_network_offset(skb) << |
| IXGBE_ADVTXD_MACLEN_SHIFT); |
| if (skb->ip_summed == CHECKSUM_PARTIAL) |
| vlan_macip_lens |= (skb_transport_header(skb) - |
| skb_network_header(skb)); |
| |
| context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); |
| context_desc->seqnum_seed = 0; |
| |
| type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | |
| IXGBE_ADVTXD_DTYP_CTXT); |
| |
| if (skb->ip_summed == CHECKSUM_PARTIAL) |
| type_tucmd_mlhl |= ixgbe_psum(adapter, skb, protocol); |
| |
| context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); |
| /* use index zero for tx checksum offload */ |
| context_desc->mss_l4len_idx = 0; |
| |
| tx_buffer_info->time_stamp = jiffies; |
| tx_buffer_info->next_to_watch = i; |
| |
| i++; |
| if (i == tx_ring->count) |
| i = 0; |
| tx_ring->next_to_use = i; |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| 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, i; |
| unsigned int nr_frags = skb_shinfo(skb)->nr_frags; |
| unsigned int f; |
| unsigned int bytecount = skb->len; |
| u16 gso_segs = 1; |
| |
| 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_adapter *adapter, struct sk_buff *skb, |
| u8 queue, u32 tx_flags, __be16 protocol) |
| { |
| struct ixgbe_atr_input atr_input; |
| struct iphdr *iph = ip_hdr(skb); |
| struct ethhdr *eth = (struct ethhdr *)skb->data; |
| struct tcphdr *th; |
| u16 vlan_id; |
| |
| /* Right now, we support IPv4 w/ TCP only */ |
| if (protocol != htons(ETH_P_IP) || |
| iph->protocol != IPPROTO_TCP) |
| return; |
| |
| memset(&atr_input, 0, sizeof(struct ixgbe_atr_input)); |
| |
| vlan_id = (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK) >> |
| IXGBE_TX_FLAGS_VLAN_SHIFT; |
| |
| th = tcp_hdr(skb); |
| |
| ixgbe_atr_set_vlan_id_82599(&atr_input, vlan_id); |
| ixgbe_atr_set_src_port_82599(&atr_input, th->dest); |
| ixgbe_atr_set_dst_port_82599(&atr_input, th->source); |
| ixgbe_atr_set_flex_byte_82599(&atr_input, eth->h_proto); |
| ixgbe_atr_set_l4type_82599(&atr_input, IXGBE_ATR_L4TYPE_TCP); |
| /* src and dst are inverted, think how the receiver sees them */ |
| ixgbe_atr_set_src_ipv4_82599(&atr_input, iph->daddr); |
| ixgbe_atr_set_dst_ipv4_82599(&atr_input, iph->saddr); |
| |
| /* This assumes the Rx queue and Tx queue are bound to the same CPU */ |
| ixgbe_fdir_add_signature_filter_82599(&adapter->hw, &atr_input, queue); |
| } |
| |
| static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, int 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 int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, int 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 = smp_processor_id(); |
| #ifdef IXGBE_FCOE |
| __be16 protocol; |
| |
| protocol = vlan_get_protocol(skb); |
| |
| if ((protocol == htons(ETH_P_FCOE)) || |
| (protocol == htons(ETH_P_FIP))) { |
| if (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; |
| #ifdef CONFIG_IXGBE_DCB |
| } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
| txq = adapter->fcoe.up; |
| return txq; |
| #endif |
| } |
| } |
| #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; |
| } |
| |
| if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
| if (skb->priority == TC_PRIO_CONTROL) |
| txq = adapter->ring_feature[RING_F_DCB].indices-1; |
| else |
| txq = (skb->vlan_tci & IXGBE_TX_FLAGS_VLAN_PRIO_MASK) |
| >> 13; |
| 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) |
| { |
| struct net_device *netdev = tx_ring->netdev; |
| struct netdev_queue *txq; |
| unsigned int first; |
| unsigned int tx_flags = 0; |
| u8 hdr_len = 0; |
| int tso; |
| int count = 0; |
| unsigned int f; |
| __be16 protocol; |
| |
| 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 |= ((skb->queue_mapping & 0x7) << 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 |= ((skb->queue_mapping & 0x7) << 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) || |
| protocol == htons(ETH_P_FIP))) { |
| #ifdef CONFIG_IXGBE_DCB |
| if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
| tx_flags &= ~(IXGBE_TX_FLAGS_VLAN_PRIO_MASK |
| << IXGBE_TX_FLAGS_VLAN_SHIFT); |
| tx_flags |= ((adapter->fcoe.up << 13) |
| << IXGBE_TX_FLAGS_VLAN_SHIFT); |
| } |
| #endif |
| /* flag for FCoE offloads */ |
| if (protocol == htons(ETH_P_FCOE)) |
| tx_flags |= IXGBE_TX_FLAGS_FCOE; |
| } |
| #endif |
| |
| /* four things can cause us to need a context descriptor */ |
| if (skb_is_gso(skb) || |
| (skb->ip_summed == CHECKSUM_PARTIAL) || |
| (tx_flags & IXGBE_TX_FLAGS_VLAN) || |
| (tx_flags & IXGBE_TX_FLAGS_FCOE)) |
| count++; |
| |
| count += TXD_USE_COUNT(skb_headlen(skb)); |
| for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) |
| count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); |
| |
| if (ixgbe_maybe_stop_tx(tx_ring, count)) { |
| tx_ring->tx_stats.tx_busy++; |
| return NETDEV_TX_BUSY; |
| } |
| |
| first = tx_ring->next_to_use; |
| if (tx_flags & IXGBE_TX_FLAGS_FCOE) { |
| #ifdef IXGBE_FCOE |
| /* setup tx offload for FCoE */ |
| tso = ixgbe_fso(adapter, tx_ring, skb, tx_flags, &hdr_len); |
| if (tso < 0) { |
| dev_kfree_skb_any(skb); |
| return NETDEV_TX_OK; |
| } |
| 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(adapter, tx_ring, skb, tx_flags, &hdr_len, |
| protocol); |
| if (tso < 0) { |
| dev_kfree_skb_any(skb); |
| return NETDEV_TX_OK; |
| } |
| |
| if (tso) |
| tx_flags |= IXGBE_TX_FLAGS_TSO; |
| else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags, |
| protocol) && |
| (skb->ip_summed == CHECKSUM_PARTIAL)) |
| 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 (tx_ring->atr_sample_rate) { |
| ++tx_ring->atr_count; |
| if ((tx_ring->atr_count >= tx_ring->atr_sample_rate) && |
| test_bit(__IXGBE_TX_FDIR_INIT_DONE, |
| &tx_ring->state)) { |
| ixgbe_atr(adapter, skb, tx_ring->queue_index, |
| tx_flags, protocol); |
| tx_ring->atr_count = 0; |
| } |
| } |
| txq = netdev_get_tx_queue(netdev, tx_ring->queue_index); |
| txq->tx_bytes += skb->len; |
| txq->tx_packets++; |
| ixgbe_tx_queue(tx_ring, tx_flags, count, skb->len, hdr_len); |
| ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED); |
| |
| } else { |
| dev_kfree_skb_any(skb); |
| tx_ring->tx_buffer_info[first].time_stamp = 0; |
| tx_ring->next_to_use = first; |
| } |
| |
| 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; |
| |
| /* accurate rx/tx bytes/packets stats */ |
| dev_txq_stats_fold(netdev, stats); |
| 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; |
| } |
| } |
| 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; |
| } |
| |
| |
| 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, |
| #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_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 */ |
| }; |
| |
| 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; |
| |
| 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; |
| } |
| /* 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); |
| |
| 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); |
| |
| indices = max_t(unsigned int, indices, IXGBE_MAX_DCB_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; |
| |
| /* set up this timer and work struct before calling get_invariants |
| * which might start the timer |
| */ |
| init_timer(&adapter->sfp_timer); |
| adapter->sfp_timer.function = ixgbe_sfp_timer; |
| adapter->sfp_timer.data = (unsigned long) adapter; |
| |
| INIT_WORK(&adapter->sfp_task, ixgbe_sfp_task); |
| |
| /* multispeed fiber has its own tasklet, called from GPI SDP1 context */ |
| INIT_WORK(&adapter->multispeed_fiber_task, ixgbe_multispeed_fiber_task); |
| |
| /* a new SFP+ module arrival, called from GPI SDP2 context */ |
| INIT_WORK(&adapter->sfp_config_module_task, |
| ixgbe_sfp_config_module_task); |
| |
| 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) { |
| /* |
| * Start a kernel thread to watch for a module to arrive. |
| * Only do this for 82598, since 82599 will generate |
| * interrupts on module arrival. |
| */ |
| set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); |
| mod_timer(&adapter->sfp_timer, |
| round_jiffies(jiffies + (2 * HZ))); |
| err = 0; |
| } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { |
| 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"); |
| 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_HW_VLAN_TX | |
| NETIF_F_HW_VLAN_RX | |
| NETIF_F_HW_VLAN_FILTER; |
| |
| netdev->features |= NETIF_F_IPV6_CSUM; |
| netdev->features |= NETIF_F_TSO; |
| netdev->features |= NETIF_F_TSO6; |
| netdev->features |= NETIF_F_GRO; |
| |
| if (adapter->hw.mac.type == ixgbe_mac_82599EB) |
| netdev->features |= NETIF_F_SCTP_CSUM; |
| |
| 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); |
| if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) |
| adapter->flags &= ~IXGBE_FLAG_RSS_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_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); |
| |
| init_timer(&adapter->watchdog_timer); |
| adapter->watchdog_timer.function = ixgbe_watchdog; |
| adapter->watchdog_timer.data = (unsigned long)adapter; |
| |
| INIT_WORK(&adapter->reset_task, ixgbe_reset_task); |
| INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task); |
| |
| err = ixgbe_init_interrupt_scheme(adapter); |
| if (err) |
| goto err_sw_init; |
| |
| 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 | IXGBE_WUFC_EX | |
| IXGBE_WUFC_MC | IXGBE_WUFC_BC); |
| 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 | IXGBE_WUFC_EX | |
| IXGBE_WUFC_MC | IXGBE_WUFC_BC); |
| break; |
| case IXGBE_DEV_ID_82599_KX4: |
| adapter->wol = (IXGBE_WUFC_MAG | IXGBE_WUFC_EX | |
| IXGBE_WUFC_MC | IXGBE_WUFC_BC); |
| 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 ? "5.0Gb/s" : |
| hw->bus.speed == ixgbe_bus_speed_2500 ? "2.5Gb/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); |
| |
| if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE || |
| adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) |
| INIT_WORK(&adapter->fdir_reinit_task, ixgbe_fdir_reinit_task); |
| |
| if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) |
| INIT_WORK(&adapter->check_overtemp_task, |
| ixgbe_check_overtemp_task); |
| #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)); |
| } |
| |
| /* 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); |
| clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); |
| del_timer_sync(&adapter->sfp_timer); |
| cancel_work_sync(&adapter->sfp_task); |
| cancel_work_sync(&adapter->multispeed_fiber_task); |
| cancel_work_sync(&adapter->sfp_config_module_task); |
| 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); |
| |
| /* |
| * The timers may be rescheduled, so explicitly disable them |
| * from being rescheduled. |
| */ |
| clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); |
| del_timer_sync(&adapter->watchdog_timer); |
| del_timer_sync(&adapter->sfp_timer); |
| |
| cancel_work_sync(&adapter->watchdog_task); |
| cancel_work_sync(&adapter->sfp_task); |
| cancel_work_sync(&adapter->multispeed_fiber_task); |
| cancel_work_sync(&adapter->sfp_config_module_task); |
| if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE || |
| adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) |
| cancel_work_sync(&adapter->fdir_reinit_task); |
| if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) |
| cancel_work_sync(&adapter->check_overtemp_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 */ |
| |
| /** |
| * ixgbe_get_hw_dev return device |
| * used by hardware layer to print debugging information |
| **/ |
| struct net_device *ixgbe_get_hw_dev(struct ixgbe_hw *hw) |
| { |
| struct ixgbe_adapter *adapter = hw->back; |
| return adapter->netdev; |
| } |
| |
| module_exit(ixgbe_exit_module); |
| |
| /* ixgbe_main.c */ |