/**********************************************************************
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* Author: Cavium, Inc.
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*
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* Contact: support@cavium.com
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* Please include "LiquidIO" in the subject.
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*
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* Copyright (c) 2003-2016 Cavium, Inc.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, Version 2, as
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* published by the Free Software Foundation.
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*
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* This file is distributed in the hope that it will be useful, but
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* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
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* NONINFRINGEMENT. See the GNU General Public License for more details.
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***********************************************************************/
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <net/vxlan.h>
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#include "liquidio_common.h"
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#include "octeon_droq.h"
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#include "octeon_iq.h"
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#include "response_manager.h"
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#include "octeon_device.h"
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#include "octeon_nic.h"
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#include "octeon_main.h"
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#include "octeon_network.h"
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#include "cn23xx_vf_device.h"
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MODULE_AUTHOR("Cavium Networks, <support@cavium.com>");
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MODULE_DESCRIPTION("Cavium LiquidIO Intelligent Server Adapter Virtual Function Driver");
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MODULE_LICENSE("GPL");
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static int debug = -1;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "NETIF_MSG debug bits");
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#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
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struct oct_timestamp_resp {
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u64 rh;
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u64 timestamp;
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u64 status;
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};
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union tx_info {
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u64 u64;
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struct {
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#ifdef __BIG_ENDIAN_BITFIELD
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u16 gso_size;
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u16 gso_segs;
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u32 reserved;
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#else
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u32 reserved;
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u16 gso_segs;
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u16 gso_size;
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#endif
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} s;
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};
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#define OCTNIC_GSO_MAX_HEADER_SIZE 128
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#define OCTNIC_GSO_MAX_SIZE \
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(CN23XX_DEFAULT_INPUT_JABBER - OCTNIC_GSO_MAX_HEADER_SIZE)
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static int
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liquidio_vf_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
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static void liquidio_vf_remove(struct pci_dev *pdev);
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static int octeon_device_init(struct octeon_device *oct);
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static int liquidio_stop(struct net_device *netdev);
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static int lio_wait_for_oq_pkts(struct octeon_device *oct)
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{
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struct octeon_device_priv *oct_priv =
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(struct octeon_device_priv *)oct->priv;
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int retry = MAX_IO_PENDING_PKT_COUNT;
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int pkt_cnt = 0, pending_pkts;
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int i;
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do {
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pending_pkts = 0;
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for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
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if (!(oct->io_qmask.oq & BIT_ULL(i)))
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continue;
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pkt_cnt += octeon_droq_check_hw_for_pkts(oct->droq[i]);
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}
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if (pkt_cnt > 0) {
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pending_pkts += pkt_cnt;
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tasklet_schedule(&oct_priv->droq_tasklet);
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}
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pkt_cnt = 0;
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schedule_timeout_uninterruptible(1);
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} while (retry-- && pending_pkts);
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return pkt_cnt;
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}
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/**
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* pcierror_quiesce_device - Cause device to go quiet so it can be safely removed/reset/etc
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* @oct: Pointer to Octeon device
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*/
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static void pcierror_quiesce_device(struct octeon_device *oct)
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{
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int i;
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/* Disable the input and output queues now. No more packets will
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* arrive from Octeon, but we should wait for all packet processing
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* to finish.
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*/
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/* To allow for in-flight requests */
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schedule_timeout_uninterruptible(100);
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if (wait_for_pending_requests(oct))
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dev_err(&oct->pci_dev->dev, "There were pending requests\n");
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/* Force all requests waiting to be fetched by OCTEON to complete. */
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for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
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struct octeon_instr_queue *iq;
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if (!(oct->io_qmask.iq & BIT_ULL(i)))
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continue;
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iq = oct->instr_queue[i];
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if (atomic_read(&iq->instr_pending)) {
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spin_lock_bh(&iq->lock);
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iq->fill_cnt = 0;
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iq->octeon_read_index = iq->host_write_index;
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iq->stats.instr_processed +=
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atomic_read(&iq->instr_pending);
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lio_process_iq_request_list(oct, iq, 0);
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spin_unlock_bh(&iq->lock);
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}
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}
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/* Force all pending ordered list requests to time out. */
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lio_process_ordered_list(oct, 1);
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/* We do not need to wait for output queue packets to be processed. */
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}
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/**
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* cleanup_aer_uncorrect_error_status - Cleanup PCI AER uncorrectable error status
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* @dev: Pointer to PCI device
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*/
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static void cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
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{
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u32 status, mask;
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int pos = 0x100;
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pr_info("%s :\n", __func__);
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pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
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pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask);
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if (dev->error_state == pci_channel_io_normal)
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status &= ~mask; /* Clear corresponding nonfatal bits */
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else
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status &= mask; /* Clear corresponding fatal bits */
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pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
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}
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/**
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* stop_pci_io - Stop all PCI IO to a given device
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* @oct: Pointer to Octeon device
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*/
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static void stop_pci_io(struct octeon_device *oct)
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{
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struct msix_entry *msix_entries;
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int i;
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/* No more instructions will be forwarded. */
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atomic_set(&oct->status, OCT_DEV_IN_RESET);
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for (i = 0; i < oct->ifcount; i++)
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netif_device_detach(oct->props[i].netdev);
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/* Disable interrupts */
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oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
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pcierror_quiesce_device(oct);
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if (oct->msix_on) {
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msix_entries = (struct msix_entry *)oct->msix_entries;
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for (i = 0; i < oct->num_msix_irqs; i++) {
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/* clear the affinity_cpumask */
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irq_set_affinity_hint(msix_entries[i].vector,
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NULL);
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free_irq(msix_entries[i].vector,
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&oct->ioq_vector[i]);
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}
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pci_disable_msix(oct->pci_dev);
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kfree(oct->msix_entries);
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oct->msix_entries = NULL;
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octeon_free_ioq_vector(oct);
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}
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dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n",
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lio_get_state_string(&oct->status));
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/* making it a common function for all OCTEON models */
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cleanup_aer_uncorrect_error_status(oct->pci_dev);
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pci_disable_device(oct->pci_dev);
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}
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/**
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* liquidio_pcie_error_detected - called when PCI error is detected
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* @pdev: Pointer to PCI device
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* @state: The current pci connection state
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*
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* This function is called after a PCI bus error affecting
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* this device has been detected.
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*/
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static pci_ers_result_t liquidio_pcie_error_detected(struct pci_dev *pdev,
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pci_channel_state_t state)
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{
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struct octeon_device *oct = pci_get_drvdata(pdev);
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/* Non-correctable Non-fatal errors */
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if (state == pci_channel_io_normal) {
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dev_err(&oct->pci_dev->dev, "Non-correctable non-fatal error reported:\n");
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cleanup_aer_uncorrect_error_status(oct->pci_dev);
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return PCI_ERS_RESULT_CAN_RECOVER;
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}
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/* Non-correctable Fatal errors */
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dev_err(&oct->pci_dev->dev, "Non-correctable FATAL reported by PCI AER driver\n");
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stop_pci_io(oct);
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return PCI_ERS_RESULT_DISCONNECT;
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}
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/* For PCI-E Advanced Error Recovery (AER) Interface */
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static const struct pci_error_handlers liquidio_vf_err_handler = {
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.error_detected = liquidio_pcie_error_detected,
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};
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static const struct pci_device_id liquidio_vf_pci_tbl[] = {
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{
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PCI_VENDOR_ID_CAVIUM, OCTEON_CN23XX_VF_VID,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0
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},
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{
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0, 0, 0, 0, 0, 0, 0
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}
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};
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MODULE_DEVICE_TABLE(pci, liquidio_vf_pci_tbl);
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static struct pci_driver liquidio_vf_pci_driver = {
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.name = "LiquidIO_VF",
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.id_table = liquidio_vf_pci_tbl,
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.probe = liquidio_vf_probe,
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.remove = liquidio_vf_remove,
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.err_handler = &liquidio_vf_err_handler, /* For AER */
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};
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/**
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* print_link_info - Print link information
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* @netdev: network device
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*/
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static void print_link_info(struct net_device *netdev)
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{
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struct lio *lio = GET_LIO(netdev);
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if (!ifstate_check(lio, LIO_IFSTATE_RESETTING) &&
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ifstate_check(lio, LIO_IFSTATE_REGISTERED)) {
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struct oct_link_info *linfo = &lio->linfo;
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if (linfo->link.s.link_up) {
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netif_info(lio, link, lio->netdev, "%d Mbps %s Duplex UP\n",
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linfo->link.s.speed,
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(linfo->link.s.duplex) ? "Full" : "Half");
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} else {
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netif_info(lio, link, lio->netdev, "Link Down\n");
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}
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}
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}
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/**
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* octnet_link_status_change - Routine to notify MTU change
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* @work: work_struct data structure
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*/
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static void octnet_link_status_change(struct work_struct *work)
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{
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struct cavium_wk *wk = (struct cavium_wk *)work;
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struct lio *lio = (struct lio *)wk->ctxptr;
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/* lio->linfo.link.s.mtu always contains max MTU of the lio interface.
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* this API is invoked only when new max-MTU of the interface is
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* less than current MTU.
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*/
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rtnl_lock();
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dev_set_mtu(lio->netdev, lio->linfo.link.s.mtu);
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rtnl_unlock();
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}
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/**
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* setup_link_status_change_wq - Sets up the mtu status change work
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* @netdev: network device
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*/
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static int setup_link_status_change_wq(struct net_device *netdev)
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{
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struct lio *lio = GET_LIO(netdev);
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struct octeon_device *oct = lio->oct_dev;
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lio->link_status_wq.wq = alloc_workqueue("link-status",
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WQ_MEM_RECLAIM, 0);
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if (!lio->link_status_wq.wq) {
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dev_err(&oct->pci_dev->dev, "unable to create cavium link status wq\n");
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return -1;
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}
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INIT_DELAYED_WORK(&lio->link_status_wq.wk.work,
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octnet_link_status_change);
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lio->link_status_wq.wk.ctxptr = lio;
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return 0;
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}
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static void cleanup_link_status_change_wq(struct net_device *netdev)
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{
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struct lio *lio = GET_LIO(netdev);
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if (lio->link_status_wq.wq) {
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cancel_delayed_work_sync(&lio->link_status_wq.wk.work);
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destroy_workqueue(lio->link_status_wq.wq);
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}
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}
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/**
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* update_link_status - Update link status
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* @netdev: network device
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* @ls: link status structure
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*
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* Called on receipt of a link status response from the core application to
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* update each interface's link status.
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*/
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static void update_link_status(struct net_device *netdev,
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union oct_link_status *ls)
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{
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struct lio *lio = GET_LIO(netdev);
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int current_max_mtu = lio->linfo.link.s.mtu;
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struct octeon_device *oct = lio->oct_dev;
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if ((lio->intf_open) && (lio->linfo.link.u64 != ls->u64)) {
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lio->linfo.link.u64 = ls->u64;
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print_link_info(netdev);
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lio->link_changes++;
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if (lio->linfo.link.s.link_up) {
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netif_carrier_on(netdev);
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wake_txqs(netdev);
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} else {
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netif_carrier_off(netdev);
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stop_txqs(netdev);
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}
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if (lio->linfo.link.s.mtu != current_max_mtu) {
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dev_info(&oct->pci_dev->dev,
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"Max MTU Changed from %d to %d\n",
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current_max_mtu, lio->linfo.link.s.mtu);
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netdev->max_mtu = lio->linfo.link.s.mtu;
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}
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if (lio->linfo.link.s.mtu < netdev->mtu) {
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dev_warn(&oct->pci_dev->dev,
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"Current MTU is higher than new max MTU; Reducing the current mtu from %d to %d\n",
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netdev->mtu, lio->linfo.link.s.mtu);
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queue_delayed_work(lio->link_status_wq.wq,
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&lio->link_status_wq.wk.work, 0);
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}
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}
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}
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/**
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* liquidio_vf_probe - PCI probe handler
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* @pdev: PCI device structure
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* @ent: unused
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*/
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static int
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liquidio_vf_probe(struct pci_dev *pdev,
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const struct pci_device_id __maybe_unused *ent)
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{
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struct octeon_device *oct_dev = NULL;
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oct_dev = octeon_allocate_device(pdev->device,
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sizeof(struct octeon_device_priv));
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if (!oct_dev) {
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dev_err(&pdev->dev, "Unable to allocate device\n");
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return -ENOMEM;
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}
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oct_dev->msix_on = LIO_FLAG_MSIX_ENABLED;
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dev_info(&pdev->dev, "Initializing device %x:%x.\n",
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(u32)pdev->vendor, (u32)pdev->device);
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/* Assign octeon_device for this device to the private data area. */
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pci_set_drvdata(pdev, oct_dev);
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/* set linux specific device pointer */
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oct_dev->pci_dev = pdev;
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oct_dev->subsystem_id = pdev->subsystem_vendor |
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(pdev->subsystem_device << 16);
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if (octeon_device_init(oct_dev)) {
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liquidio_vf_remove(pdev);
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return -ENOMEM;
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}
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dev_dbg(&oct_dev->pci_dev->dev, "Device is ready\n");
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return 0;
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}
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/**
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* octeon_pci_flr - PCI FLR for each Octeon device.
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* @oct: octeon device
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*/
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static void octeon_pci_flr(struct octeon_device *oct)
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{
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pci_save_state(oct->pci_dev);
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pci_cfg_access_lock(oct->pci_dev);
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/* Quiesce the device completely */
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pci_write_config_word(oct->pci_dev, PCI_COMMAND,
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PCI_COMMAND_INTX_DISABLE);
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pcie_flr(oct->pci_dev);
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pci_cfg_access_unlock(oct->pci_dev);
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pci_restore_state(oct->pci_dev);
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}
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/**
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* octeon_destroy_resources - Destroy resources associated with octeon device
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* @oct: octeon device
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*/
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static void octeon_destroy_resources(struct octeon_device *oct)
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{
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struct octeon_device_priv *oct_priv =
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(struct octeon_device_priv *)oct->priv;
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struct msix_entry *msix_entries;
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int i;
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switch (atomic_read(&oct->status)) {
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case OCT_DEV_RUNNING:
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case OCT_DEV_CORE_OK:
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/* No more instructions will be forwarded. */
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atomic_set(&oct->status, OCT_DEV_IN_RESET);
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oct->app_mode = CVM_DRV_INVALID_APP;
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dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n",
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lio_get_state_string(&oct->status));
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schedule_timeout_uninterruptible(HZ / 10);
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fallthrough;
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case OCT_DEV_HOST_OK:
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case OCT_DEV_IO_QUEUES_DONE:
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if (lio_wait_for_instr_fetch(oct))
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dev_err(&oct->pci_dev->dev, "IQ had pending instructions\n");
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if (wait_for_pending_requests(oct))
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dev_err(&oct->pci_dev->dev, "There were pending requests\n");
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/* Disable the input and output queues now. No more packets will
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* arrive from Octeon, but we should wait for all packet
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* processing to finish.
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*/
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oct->fn_list.disable_io_queues(oct);
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if (lio_wait_for_oq_pkts(oct))
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dev_err(&oct->pci_dev->dev, "OQ had pending packets\n");
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/* Force all requests waiting to be fetched by OCTEON to
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* complete.
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*/
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for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
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struct octeon_instr_queue *iq;
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if (!(oct->io_qmask.iq & BIT_ULL(i)))
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continue;
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iq = oct->instr_queue[i];
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if (atomic_read(&iq->instr_pending)) {
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spin_lock_bh(&iq->lock);
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iq->fill_cnt = 0;
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iq->octeon_read_index = iq->host_write_index;
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iq->stats.instr_processed +=
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atomic_read(&iq->instr_pending);
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lio_process_iq_request_list(oct, iq, 0);
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spin_unlock_bh(&iq->lock);
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}
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}
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lio_process_ordered_list(oct, 1);
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octeon_free_sc_done_list(oct);
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octeon_free_sc_zombie_list(oct);
|
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fallthrough;
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case OCT_DEV_INTR_SET_DONE:
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/* Disable interrupts */
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oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
|
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if (oct->msix_on) {
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msix_entries = (struct msix_entry *)oct->msix_entries;
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for (i = 0; i < oct->num_msix_irqs; i++) {
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if (oct->ioq_vector[i].vector) {
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irq_set_affinity_hint(
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msix_entries[i].vector,
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NULL);
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free_irq(msix_entries[i].vector,
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&oct->ioq_vector[i]);
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oct->ioq_vector[i].vector = 0;
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}
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}
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pci_disable_msix(oct->pci_dev);
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kfree(oct->msix_entries);
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oct->msix_entries = NULL;
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kfree(oct->irq_name_storage);
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oct->irq_name_storage = NULL;
|
}
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/* Soft reset the octeon device before exiting */
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if (oct->pci_dev->reset_fn)
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octeon_pci_flr(oct);
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else
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cn23xx_vf_ask_pf_to_do_flr(oct);
|
|
fallthrough;
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case OCT_DEV_MSIX_ALLOC_VECTOR_DONE:
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octeon_free_ioq_vector(oct);
|
|
fallthrough;
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case OCT_DEV_MBOX_SETUP_DONE:
|
oct->fn_list.free_mbox(oct);
|
|
fallthrough;
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case OCT_DEV_IN_RESET:
|
case OCT_DEV_DROQ_INIT_DONE:
|
mdelay(100);
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for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
|
if (!(oct->io_qmask.oq & BIT_ULL(i)))
|
continue;
|
octeon_delete_droq(oct, i);
|
}
|
|
fallthrough;
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case OCT_DEV_RESP_LIST_INIT_DONE:
|
octeon_delete_response_list(oct);
|
|
fallthrough;
|
case OCT_DEV_INSTR_QUEUE_INIT_DONE:
|
for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
|
if (!(oct->io_qmask.iq & BIT_ULL(i)))
|
continue;
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octeon_delete_instr_queue(oct, i);
|
}
|
|
fallthrough;
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case OCT_DEV_SC_BUFF_POOL_INIT_DONE:
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octeon_free_sc_buffer_pool(oct);
|
|
fallthrough;
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case OCT_DEV_DISPATCH_INIT_DONE:
|
octeon_delete_dispatch_list(oct);
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cancel_delayed_work_sync(&oct->nic_poll_work.work);
|
|
fallthrough;
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case OCT_DEV_PCI_MAP_DONE:
|
octeon_unmap_pci_barx(oct, 0);
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octeon_unmap_pci_barx(oct, 1);
|
|
fallthrough;
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case OCT_DEV_PCI_ENABLE_DONE:
|
pci_clear_master(oct->pci_dev);
|
/* Disable the device, releasing the PCI INT */
|
pci_disable_device(oct->pci_dev);
|
|
fallthrough;
|
case OCT_DEV_BEGIN_STATE:
|
/* Nothing to be done here either */
|
break;
|
}
|
|
tasklet_kill(&oct_priv->droq_tasklet);
|
}
|
|
/**
|
* send_rx_ctrl_cmd - Send Rx control command
|
* @lio: per-network private data
|
* @start_stop: whether to start or stop
|
*/
|
static int send_rx_ctrl_cmd(struct lio *lio, int start_stop)
|
{
|
struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
|
struct octeon_soft_command *sc;
|
union octnet_cmd *ncmd;
|
int retval;
|
|
if (oct->props[lio->ifidx].rx_on == start_stop)
|
return 0;
|
|
sc = (struct octeon_soft_command *)
|
octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE,
|
16, 0);
|
if (!sc) {
|
netif_info(lio, rx_err, lio->netdev,
|
"Failed to allocate octeon_soft_command struct\n");
|
return -ENOMEM;
|
}
|
|
ncmd = (union octnet_cmd *)sc->virtdptr;
|
|
ncmd->u64 = 0;
|
ncmd->s.cmd = OCTNET_CMD_RX_CTL;
|
ncmd->s.param1 = start_stop;
|
|
octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3));
|
|
sc->iq_no = lio->linfo.txpciq[0].s.q_no;
|
|
octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
|
OPCODE_NIC_CMD, 0, 0, 0);
|
|
init_completion(&sc->complete);
|
sc->sc_status = OCTEON_REQUEST_PENDING;
|
|
retval = octeon_send_soft_command(oct, sc);
|
if (retval == IQ_SEND_FAILED) {
|
netif_info(lio, rx_err, lio->netdev, "Failed to send RX Control message\n");
|
octeon_free_soft_command(oct, sc);
|
} else {
|
/* Sleep on a wait queue till the cond flag indicates that the
|
* response arrived or timed-out.
|
*/
|
retval = wait_for_sc_completion_timeout(oct, sc, 0);
|
if (retval)
|
return retval;
|
|
oct->props[lio->ifidx].rx_on = start_stop;
|
WRITE_ONCE(sc->caller_is_done, true);
|
}
|
|
return retval;
|
}
|
|
/**
|
* liquidio_destroy_nic_device - Destroy NIC device interface
|
* @oct: octeon device
|
* @ifidx: which interface to destroy
|
*
|
* Cleanup associated with each interface for an Octeon device when NIC
|
* module is being unloaded or if initialization fails during load.
|
*/
|
static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx)
|
{
|
struct net_device *netdev = oct->props[ifidx].netdev;
|
struct octeon_device_priv *oct_priv =
|
(struct octeon_device_priv *)oct->priv;
|
struct napi_struct *napi, *n;
|
struct lio *lio;
|
|
if (!netdev) {
|
dev_err(&oct->pci_dev->dev, "%s No netdevice ptr for index %d\n",
|
__func__, ifidx);
|
return;
|
}
|
|
lio = GET_LIO(netdev);
|
|
dev_dbg(&oct->pci_dev->dev, "NIC device cleanup\n");
|
|
if (atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING)
|
liquidio_stop(netdev);
|
|
if (oct->props[lio->ifidx].napi_enabled == 1) {
|
list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
|
napi_disable(napi);
|
|
oct->props[lio->ifidx].napi_enabled = 0;
|
|
oct->droq[0]->ops.poll_mode = 0;
|
}
|
|
/* Delete NAPI */
|
list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
|
netif_napi_del(napi);
|
|
tasklet_enable(&oct_priv->droq_tasklet);
|
|
if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED)
|
unregister_netdev(netdev);
|
|
cleanup_rx_oom_poll_fn(netdev);
|
|
cleanup_link_status_change_wq(netdev);
|
|
lio_delete_glists(lio);
|
|
free_netdev(netdev);
|
|
oct->props[ifidx].gmxport = -1;
|
|
oct->props[ifidx].netdev = NULL;
|
}
|
|
/**
|
* liquidio_stop_nic_module - Stop complete NIC functionality
|
* @oct: octeon device
|
*/
|
static int liquidio_stop_nic_module(struct octeon_device *oct)
|
{
|
struct lio *lio;
|
int i, j;
|
|
dev_dbg(&oct->pci_dev->dev, "Stopping network interfaces\n");
|
if (!oct->ifcount) {
|
dev_err(&oct->pci_dev->dev, "Init for Octeon was not completed\n");
|
return 1;
|
}
|
|
spin_lock_bh(&oct->cmd_resp_wqlock);
|
oct->cmd_resp_state = OCT_DRV_OFFLINE;
|
spin_unlock_bh(&oct->cmd_resp_wqlock);
|
|
for (i = 0; i < oct->ifcount; i++) {
|
lio = GET_LIO(oct->props[i].netdev);
|
for (j = 0; j < oct->num_oqs; j++)
|
octeon_unregister_droq_ops(oct,
|
lio->linfo.rxpciq[j].s.q_no);
|
}
|
|
for (i = 0; i < oct->ifcount; i++)
|
liquidio_destroy_nic_device(oct, i);
|
|
dev_dbg(&oct->pci_dev->dev, "Network interfaces stopped\n");
|
return 0;
|
}
|
|
/**
|
* liquidio_vf_remove - Cleans up resources at unload time
|
* @pdev: PCI device structure
|
*/
|
static void liquidio_vf_remove(struct pci_dev *pdev)
|
{
|
struct octeon_device *oct_dev = pci_get_drvdata(pdev);
|
|
dev_dbg(&oct_dev->pci_dev->dev, "Stopping device\n");
|
|
if (oct_dev->app_mode == CVM_DRV_NIC_APP)
|
liquidio_stop_nic_module(oct_dev);
|
|
/* Reset the octeon device and cleanup all memory allocated for
|
* the octeon device by driver.
|
*/
|
octeon_destroy_resources(oct_dev);
|
|
dev_info(&oct_dev->pci_dev->dev, "Device removed\n");
|
|
/* This octeon device has been removed. Update the global
|
* data structure to reflect this. Free the device structure.
|
*/
|
octeon_free_device_mem(oct_dev);
|
}
|
|
/**
|
* octeon_pci_os_setup - PCI initialization for each Octeon device.
|
* @oct: octeon device
|
*/
|
static int octeon_pci_os_setup(struct octeon_device *oct)
|
{
|
#ifdef CONFIG_PCI_IOV
|
/* setup PCI stuff first */
|
if (!oct->pci_dev->physfn)
|
octeon_pci_flr(oct);
|
#endif
|
|
if (pci_enable_device(oct->pci_dev)) {
|
dev_err(&oct->pci_dev->dev, "pci_enable_device failed\n");
|
return 1;
|
}
|
|
if (dma_set_mask_and_coherent(&oct->pci_dev->dev, DMA_BIT_MASK(64))) {
|
dev_err(&oct->pci_dev->dev, "Unexpected DMA device capability\n");
|
pci_disable_device(oct->pci_dev);
|
return 1;
|
}
|
|
/* Enable PCI DMA Master. */
|
pci_set_master(oct->pci_dev);
|
|
return 0;
|
}
|
|
/**
|
* free_netbuf - Unmap and free network buffer
|
* @buf: buffer
|
*/
|
static void free_netbuf(void *buf)
|
{
|
struct octnet_buf_free_info *finfo;
|
struct sk_buff *skb;
|
struct lio *lio;
|
|
finfo = (struct octnet_buf_free_info *)buf;
|
skb = finfo->skb;
|
lio = finfo->lio;
|
|
dma_unmap_single(&lio->oct_dev->pci_dev->dev, finfo->dptr, skb->len,
|
DMA_TO_DEVICE);
|
|
tx_buffer_free(skb);
|
}
|
|
/**
|
* free_netsgbuf - Unmap and free gather buffer
|
* @buf: buffer
|
*/
|
static void free_netsgbuf(void *buf)
|
{
|
struct octnet_buf_free_info *finfo;
|
struct octnic_gather *g;
|
struct sk_buff *skb;
|
int i, frags, iq;
|
struct lio *lio;
|
|
finfo = (struct octnet_buf_free_info *)buf;
|
skb = finfo->skb;
|
lio = finfo->lio;
|
g = finfo->g;
|
frags = skb_shinfo(skb)->nr_frags;
|
|
dma_unmap_single(&lio->oct_dev->pci_dev->dev,
|
g->sg[0].ptr[0], (skb->len - skb->data_len),
|
DMA_TO_DEVICE);
|
|
i = 1;
|
while (frags--) {
|
skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
|
|
pci_unmap_page((lio->oct_dev)->pci_dev,
|
g->sg[(i >> 2)].ptr[(i & 3)],
|
skb_frag_size(frag), DMA_TO_DEVICE);
|
i++;
|
}
|
|
iq = skb_iq(lio->oct_dev, skb);
|
|
spin_lock(&lio->glist_lock[iq]);
|
list_add_tail(&g->list, &lio->glist[iq]);
|
spin_unlock(&lio->glist_lock[iq]);
|
|
tx_buffer_free(skb);
|
}
|
|
/**
|
* free_netsgbuf_with_resp - Unmap and free gather buffer with response
|
* @buf: buffer
|
*/
|
static void free_netsgbuf_with_resp(void *buf)
|
{
|
struct octnet_buf_free_info *finfo;
|
struct octeon_soft_command *sc;
|
struct octnic_gather *g;
|
struct sk_buff *skb;
|
int i, frags, iq;
|
struct lio *lio;
|
|
sc = (struct octeon_soft_command *)buf;
|
skb = (struct sk_buff *)sc->callback_arg;
|
finfo = (struct octnet_buf_free_info *)&skb->cb;
|
|
lio = finfo->lio;
|
g = finfo->g;
|
frags = skb_shinfo(skb)->nr_frags;
|
|
dma_unmap_single(&lio->oct_dev->pci_dev->dev,
|
g->sg[0].ptr[0], (skb->len - skb->data_len),
|
DMA_TO_DEVICE);
|
|
i = 1;
|
while (frags--) {
|
skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
|
|
pci_unmap_page((lio->oct_dev)->pci_dev,
|
g->sg[(i >> 2)].ptr[(i & 3)],
|
skb_frag_size(frag), DMA_TO_DEVICE);
|
i++;
|
}
|
|
iq = skb_iq(lio->oct_dev, skb);
|
|
spin_lock(&lio->glist_lock[iq]);
|
list_add_tail(&g->list, &lio->glist[iq]);
|
spin_unlock(&lio->glist_lock[iq]);
|
|
/* Don't free the skb yet */
|
}
|
|
/**
|
* liquidio_open - Net device open for LiquidIO
|
* @netdev: network device
|
*/
|
static int liquidio_open(struct net_device *netdev)
|
{
|
struct lio *lio = GET_LIO(netdev);
|
struct octeon_device *oct = lio->oct_dev;
|
struct octeon_device_priv *oct_priv =
|
(struct octeon_device_priv *)oct->priv;
|
struct napi_struct *napi, *n;
|
int ret = 0;
|
|
if (!oct->props[lio->ifidx].napi_enabled) {
|
tasklet_disable(&oct_priv->droq_tasklet);
|
|
list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
|
napi_enable(napi);
|
|
oct->props[lio->ifidx].napi_enabled = 1;
|
|
oct->droq[0]->ops.poll_mode = 1;
|
}
|
|
ifstate_set(lio, LIO_IFSTATE_RUNNING);
|
|
/* Ready for link status updates */
|
lio->intf_open = 1;
|
|
netif_info(lio, ifup, lio->netdev, "Interface Open, ready for traffic\n");
|
start_txqs(netdev);
|
|
INIT_DELAYED_WORK(&lio->stats_wk.work, lio_fetch_stats);
|
lio->stats_wk.ctxptr = lio;
|
schedule_delayed_work(&lio->stats_wk.work, msecs_to_jiffies
|
(LIQUIDIO_NDEV_STATS_POLL_TIME_MS));
|
|
/* tell Octeon to start forwarding packets to host */
|
ret = send_rx_ctrl_cmd(lio, 1);
|
if (ret)
|
return ret;
|
|
dev_info(&oct->pci_dev->dev, "%s interface is opened\n", netdev->name);
|
|
return ret;
|
}
|
|
/**
|
* liquidio_stop - jNet device stop for LiquidIO
|
* @netdev: network device
|
*/
|
static int liquidio_stop(struct net_device *netdev)
|
{
|
struct lio *lio = GET_LIO(netdev);
|
struct octeon_device *oct = lio->oct_dev;
|
struct octeon_device_priv *oct_priv =
|
(struct octeon_device_priv *)oct->priv;
|
struct napi_struct *napi, *n;
|
int ret = 0;
|
|
/* tell Octeon to stop forwarding packets to host */
|
ret = send_rx_ctrl_cmd(lio, 0);
|
if (ret)
|
return ret;
|
|
netif_info(lio, ifdown, lio->netdev, "Stopping interface!\n");
|
/* Inform that netif carrier is down */
|
lio->intf_open = 0;
|
lio->linfo.link.s.link_up = 0;
|
|
netif_carrier_off(netdev);
|
lio->link_changes++;
|
|
ifstate_reset(lio, LIO_IFSTATE_RUNNING);
|
|
stop_txqs(netdev);
|
|
/* Wait for any pending Rx descriptors */
|
if (lio_wait_for_clean_oq(oct))
|
netif_info(lio, rx_err, lio->netdev,
|
"Proceeding with stop interface after partial RX desc processing\n");
|
|
if (oct->props[lio->ifidx].napi_enabled == 1) {
|
list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
|
napi_disable(napi);
|
|
oct->props[lio->ifidx].napi_enabled = 0;
|
|
oct->droq[0]->ops.poll_mode = 0;
|
|
tasklet_enable(&oct_priv->droq_tasklet);
|
}
|
|
cancel_delayed_work_sync(&lio->stats_wk.work);
|
|
dev_info(&oct->pci_dev->dev, "%s interface is stopped\n", netdev->name);
|
|
return ret;
|
}
|
|
/**
|
* get_new_flags - Converts a mask based on net device flags
|
* @netdev: network device
|
*
|
* This routine generates a octnet_ifflags mask from the net device flags
|
* received from the OS.
|
*/
|
static enum octnet_ifflags get_new_flags(struct net_device *netdev)
|
{
|
enum octnet_ifflags f = OCTNET_IFFLAG_UNICAST;
|
|
if (netdev->flags & IFF_PROMISC)
|
f |= OCTNET_IFFLAG_PROMISC;
|
|
if (netdev->flags & IFF_ALLMULTI)
|
f |= OCTNET_IFFLAG_ALLMULTI;
|
|
if (netdev->flags & IFF_MULTICAST) {
|
f |= OCTNET_IFFLAG_MULTICAST;
|
|
/* Accept all multicast addresses if there are more than we
|
* can handle
|
*/
|
if (netdev_mc_count(netdev) > MAX_OCTEON_MULTICAST_ADDR)
|
f |= OCTNET_IFFLAG_ALLMULTI;
|
}
|
|
if (netdev->flags & IFF_BROADCAST)
|
f |= OCTNET_IFFLAG_BROADCAST;
|
|
return f;
|
}
|
|
static void liquidio_set_uc_list(struct net_device *netdev)
|
{
|
struct lio *lio = GET_LIO(netdev);
|
struct octeon_device *oct = lio->oct_dev;
|
struct octnic_ctrl_pkt nctrl;
|
struct netdev_hw_addr *ha;
|
u64 *mac;
|
|
if (lio->netdev_uc_count == netdev_uc_count(netdev))
|
return;
|
|
if (netdev_uc_count(netdev) > MAX_NCTRL_UDD) {
|
dev_err(&oct->pci_dev->dev, "too many MAC addresses in netdev uc list\n");
|
return;
|
}
|
|
lio->netdev_uc_count = netdev_uc_count(netdev);
|
|
memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
|
nctrl.ncmd.s.cmd = OCTNET_CMD_SET_UC_LIST;
|
nctrl.ncmd.s.more = lio->netdev_uc_count;
|
nctrl.ncmd.s.param1 = oct->vf_num;
|
nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
|
nctrl.netpndev = (u64)netdev;
|
nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
|
|
/* copy all the addresses into the udd */
|
mac = &nctrl.udd[0];
|
netdev_for_each_uc_addr(ha, netdev) {
|
ether_addr_copy(((u8 *)mac) + 2, ha->addr);
|
mac++;
|
}
|
|
octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
|
}
|
|
/**
|
* liquidio_set_mcast_list - Net device set_multicast_list
|
* @netdev: network device
|
*/
|
static void liquidio_set_mcast_list(struct net_device *netdev)
|
{
|
int mc_count = min(netdev_mc_count(netdev), MAX_OCTEON_MULTICAST_ADDR);
|
struct lio *lio = GET_LIO(netdev);
|
struct octeon_device *oct = lio->oct_dev;
|
struct octnic_ctrl_pkt nctrl;
|
struct netdev_hw_addr *ha;
|
u64 *mc;
|
int ret;
|
|
memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
|
|
/* Create a ctrl pkt command to be sent to core app. */
|
nctrl.ncmd.u64 = 0;
|
nctrl.ncmd.s.cmd = OCTNET_CMD_SET_MULTI_LIST;
|
nctrl.ncmd.s.param1 = get_new_flags(netdev);
|
nctrl.ncmd.s.param2 = mc_count;
|
nctrl.ncmd.s.more = mc_count;
|
nctrl.netpndev = (u64)netdev;
|
nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
|
|
/* copy all the addresses into the udd */
|
mc = &nctrl.udd[0];
|
netdev_for_each_mc_addr(ha, netdev) {
|
*mc = 0;
|
ether_addr_copy(((u8 *)mc) + 2, ha->addr);
|
/* no need to swap bytes */
|
if (++mc > &nctrl.udd[mc_count])
|
break;
|
}
|
|
nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
|
|
/* Apparently, any activity in this call from the kernel has to
|
* be atomic. So we won't wait for response.
|
*/
|
|
ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
|
if (ret) {
|
dev_err(&oct->pci_dev->dev, "DEVFLAGS change failed in core (ret: 0x%x)\n",
|
ret);
|
}
|
|
liquidio_set_uc_list(netdev);
|
}
|
|
/**
|
* liquidio_set_mac - Net device set_mac_address
|
* @netdev: network device
|
* @p: opaque pointer to sockaddr
|
*/
|
static int liquidio_set_mac(struct net_device *netdev, void *p)
|
{
|
struct sockaddr *addr = (struct sockaddr *)p;
|
struct lio *lio = GET_LIO(netdev);
|
struct octeon_device *oct = lio->oct_dev;
|
struct octnic_ctrl_pkt nctrl;
|
int ret = 0;
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
return -EADDRNOTAVAIL;
|
|
if (ether_addr_equal(addr->sa_data, netdev->dev_addr))
|
return 0;
|
|
if (lio->linfo.macaddr_is_admin_asgnd)
|
return -EPERM;
|
|
memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
|
|
nctrl.ncmd.u64 = 0;
|
nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR;
|
nctrl.ncmd.s.param1 = 0;
|
nctrl.ncmd.s.more = 1;
|
nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
|
nctrl.netpndev = (u64)netdev;
|
|
nctrl.udd[0] = 0;
|
/* The MAC Address is presented in network byte order. */
|
ether_addr_copy((u8 *)&nctrl.udd[0] + 2, addr->sa_data);
|
|
ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
|
if (ret < 0) {
|
dev_err(&oct->pci_dev->dev, "MAC Address change failed\n");
|
return -ENOMEM;
|
}
|
|
if (nctrl.sc_status ==
|
FIRMWARE_STATUS_CODE(OCTEON_REQUEST_NO_PERMISSION)) {
|
dev_err(&oct->pci_dev->dev, "MAC Address change failed: no permission\n");
|
return -EPERM;
|
}
|
|
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
|
ether_addr_copy(((u8 *)&lio->linfo.hw_addr) + 2, addr->sa_data);
|
|
return 0;
|
}
|
|
static void
|
liquidio_get_stats64(struct net_device *netdev,
|
struct rtnl_link_stats64 *lstats)
|
{
|
struct lio *lio = GET_LIO(netdev);
|
struct octeon_device *oct;
|
u64 pkts = 0, drop = 0, bytes = 0;
|
struct oct_droq_stats *oq_stats;
|
struct oct_iq_stats *iq_stats;
|
int i, iq_no, oq_no;
|
|
oct = lio->oct_dev;
|
|
if (ifstate_check(lio, LIO_IFSTATE_RESETTING))
|
return;
|
|
for (i = 0; i < oct->num_iqs; i++) {
|
iq_no = lio->linfo.txpciq[i].s.q_no;
|
iq_stats = &oct->instr_queue[iq_no]->stats;
|
pkts += iq_stats->tx_done;
|
drop += iq_stats->tx_dropped;
|
bytes += iq_stats->tx_tot_bytes;
|
}
|
|
lstats->tx_packets = pkts;
|
lstats->tx_bytes = bytes;
|
lstats->tx_dropped = drop;
|
|
pkts = 0;
|
drop = 0;
|
bytes = 0;
|
|
for (i = 0; i < oct->num_oqs; i++) {
|
oq_no = lio->linfo.rxpciq[i].s.q_no;
|
oq_stats = &oct->droq[oq_no]->stats;
|
pkts += oq_stats->rx_pkts_received;
|
drop += (oq_stats->rx_dropped +
|
oq_stats->dropped_nodispatch +
|
oq_stats->dropped_toomany +
|
oq_stats->dropped_nomem);
|
bytes += oq_stats->rx_bytes_received;
|
}
|
|
lstats->rx_bytes = bytes;
|
lstats->rx_packets = pkts;
|
lstats->rx_dropped = drop;
|
|
lstats->multicast = oct->link_stats.fromwire.fw_total_mcast;
|
|
/* detailed rx_errors: */
|
lstats->rx_length_errors = oct->link_stats.fromwire.l2_err;
|
/* recved pkt with crc error */
|
lstats->rx_crc_errors = oct->link_stats.fromwire.fcs_err;
|
/* recv'd frame alignment error */
|
lstats->rx_frame_errors = oct->link_stats.fromwire.frame_err;
|
|
lstats->rx_errors = lstats->rx_length_errors + lstats->rx_crc_errors +
|
lstats->rx_frame_errors;
|
|
/* detailed tx_errors */
|
lstats->tx_aborted_errors = oct->link_stats.fromhost.fw_err_pko;
|
lstats->tx_carrier_errors = oct->link_stats.fromhost.fw_err_link;
|
|
lstats->tx_errors = lstats->tx_aborted_errors +
|
lstats->tx_carrier_errors;
|
}
|
|
/**
|
* hwtstamp_ioctl - Handler for SIOCSHWTSTAMP ioctl
|
* @netdev: network device
|
* @ifr: interface request
|
*/
|
static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr)
|
{
|
struct lio *lio = GET_LIO(netdev);
|
struct hwtstamp_config conf;
|
|
if (copy_from_user(&conf, ifr->ifr_data, sizeof(conf)))
|
return -EFAULT;
|
|
if (conf.flags)
|
return -EINVAL;
|
|
switch (conf.tx_type) {
|
case HWTSTAMP_TX_ON:
|
case HWTSTAMP_TX_OFF:
|
break;
|
default:
|
return -ERANGE;
|
}
|
|
switch (conf.rx_filter) {
|
case HWTSTAMP_FILTER_NONE:
|
break;
|
case HWTSTAMP_FILTER_ALL:
|
case HWTSTAMP_FILTER_SOME:
|
case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
|
case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
|
case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
|
case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
|
case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
|
case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
|
case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
|
case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
|
case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
|
case HWTSTAMP_FILTER_PTP_V2_EVENT:
|
case HWTSTAMP_FILTER_PTP_V2_SYNC:
|
case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
|
case HWTSTAMP_FILTER_NTP_ALL:
|
conf.rx_filter = HWTSTAMP_FILTER_ALL;
|
break;
|
default:
|
return -ERANGE;
|
}
|
|
if (conf.rx_filter == HWTSTAMP_FILTER_ALL)
|
ifstate_set(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
|
|
else
|
ifstate_reset(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
|
|
return copy_to_user(ifr->ifr_data, &conf, sizeof(conf)) ? -EFAULT : 0;
|
}
|
|
/**
|
* liquidio_ioctl - ioctl handler
|
* @netdev: network device
|
* @ifr: interface request
|
* @cmd: command
|
*/
|
static int liquidio_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
|
{
|
switch (cmd) {
|
case SIOCSHWTSTAMP:
|
return hwtstamp_ioctl(netdev, ifr);
|
default:
|
return -EOPNOTSUPP;
|
}
|
}
|
|
static void handle_timestamp(struct octeon_device *oct, u32 status, void *buf)
|
{
|
struct sk_buff *skb = (struct sk_buff *)buf;
|
struct octnet_buf_free_info *finfo;
|
struct oct_timestamp_resp *resp;
|
struct octeon_soft_command *sc;
|
struct lio *lio;
|
|
finfo = (struct octnet_buf_free_info *)skb->cb;
|
lio = finfo->lio;
|
sc = finfo->sc;
|
oct = lio->oct_dev;
|
resp = (struct oct_timestamp_resp *)sc->virtrptr;
|
|
if (status != OCTEON_REQUEST_DONE) {
|
dev_err(&oct->pci_dev->dev, "Tx timestamp instruction failed. Status: %llx\n",
|
CVM_CAST64(status));
|
resp->timestamp = 0;
|
}
|
|
octeon_swap_8B_data(&resp->timestamp, 1);
|
|
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
|
struct skb_shared_hwtstamps ts;
|
u64 ns = resp->timestamp;
|
|
netif_info(lio, tx_done, lio->netdev,
|
"Got resulting SKBTX_HW_TSTAMP skb=%p ns=%016llu\n",
|
skb, (unsigned long long)ns);
|
ts.hwtstamp = ns_to_ktime(ns + lio->ptp_adjust);
|
skb_tstamp_tx(skb, &ts);
|
}
|
|
octeon_free_soft_command(oct, sc);
|
tx_buffer_free(skb);
|
}
|
|
/* send_nic_timestamp_pkt - Send a data packet that will be timestamped
|
* @oct: octeon device
|
* @ndata: pointer to network data
|
* @finfo: pointer to private network data
|
*/
|
static int send_nic_timestamp_pkt(struct octeon_device *oct,
|
struct octnic_data_pkt *ndata,
|
struct octnet_buf_free_info *finfo,
|
int xmit_more)
|
{
|
struct octeon_soft_command *sc;
|
int ring_doorbell;
|
struct lio *lio;
|
int retval;
|
u32 len;
|
|
lio = finfo->lio;
|
|
sc = octeon_alloc_soft_command_resp(oct, &ndata->cmd,
|
sizeof(struct oct_timestamp_resp));
|
finfo->sc = sc;
|
|
if (!sc) {
|
dev_err(&oct->pci_dev->dev, "No memory for timestamped data packet\n");
|
return IQ_SEND_FAILED;
|
}
|
|
if (ndata->reqtype == REQTYPE_NORESP_NET)
|
ndata->reqtype = REQTYPE_RESP_NET;
|
else if (ndata->reqtype == REQTYPE_NORESP_NET_SG)
|
ndata->reqtype = REQTYPE_RESP_NET_SG;
|
|
sc->callback = handle_timestamp;
|
sc->callback_arg = finfo->skb;
|
sc->iq_no = ndata->q_no;
|
|
len = (u32)((struct octeon_instr_ih3 *)(&sc->cmd.cmd3.ih3))->dlengsz;
|
|
ring_doorbell = !xmit_more;
|
|
retval = octeon_send_command(oct, sc->iq_no, ring_doorbell, &sc->cmd,
|
sc, len, ndata->reqtype);
|
|
if (retval == IQ_SEND_FAILED) {
|
dev_err(&oct->pci_dev->dev, "timestamp data packet failed status: %x\n",
|
retval);
|
octeon_free_soft_command(oct, sc);
|
} else {
|
netif_info(lio, tx_queued, lio->netdev, "Queued timestamp packet\n");
|
}
|
|
return retval;
|
}
|
|
/**
|
* liquidio_xmit - Transmit networks packets to the Octeon interface
|
* @skb: skbuff struct to be passed to network layer.
|
* @netdev: pointer to network device
|
* @returns whether the packet was transmitted to the device okay or not
|
* (NETDEV_TX_OK or NETDEV_TX_BUSY)
|
*/
|
static netdev_tx_t liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
|
{
|
struct octnet_buf_free_info *finfo;
|
union octnic_cmd_setup cmdsetup;
|
struct octnic_data_pkt ndata;
|
struct octeon_instr_irh *irh;
|
struct oct_iq_stats *stats;
|
struct octeon_device *oct;
|
int q_idx = 0, iq_no = 0;
|
union tx_info *tx_info;
|
int xmit_more = 0;
|
struct lio *lio;
|
int status = 0;
|
u64 dptr = 0;
|
u32 tag = 0;
|
int j;
|
|
lio = GET_LIO(netdev);
|
oct = lio->oct_dev;
|
|
q_idx = skb_iq(lio->oct_dev, skb);
|
tag = q_idx;
|
iq_no = lio->linfo.txpciq[q_idx].s.q_no;
|
|
stats = &oct->instr_queue[iq_no]->stats;
|
|
/* Check for all conditions in which the current packet cannot be
|
* transmitted.
|
*/
|
if (!(atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING) ||
|
(!lio->linfo.link.s.link_up) || (skb->len <= 0)) {
|
netif_info(lio, tx_err, lio->netdev, "Transmit failed link_status : %d\n",
|
lio->linfo.link.s.link_up);
|
goto lio_xmit_failed;
|
}
|
|
/* Use space in skb->cb to store info used to unmap and
|
* free the buffers.
|
*/
|
finfo = (struct octnet_buf_free_info *)skb->cb;
|
finfo->lio = lio;
|
finfo->skb = skb;
|
finfo->sc = NULL;
|
|
/* Prepare the attributes for the data to be passed to OSI. */
|
memset(&ndata, 0, sizeof(struct octnic_data_pkt));
|
|
ndata.buf = finfo;
|
|
ndata.q_no = iq_no;
|
|
if (octnet_iq_is_full(oct, ndata.q_no)) {
|
/* defer sending if queue is full */
|
netif_info(lio, tx_err, lio->netdev, "Transmit failed iq:%d full\n",
|
ndata.q_no);
|
stats->tx_iq_busy++;
|
return NETDEV_TX_BUSY;
|
}
|
|
ndata.datasize = skb->len;
|
|
cmdsetup.u64 = 0;
|
cmdsetup.s.iq_no = iq_no;
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
if (skb->encapsulation) {
|
cmdsetup.s.tnl_csum = 1;
|
stats->tx_vxlan++;
|
} else {
|
cmdsetup.s.transport_csum = 1;
|
}
|
}
|
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
|
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
|
cmdsetup.s.timestamp = 1;
|
}
|
|
if (!skb_shinfo(skb)->nr_frags) {
|
cmdsetup.s.u.datasize = skb->len;
|
octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag);
|
/* Offload checksum calculation for TCP/UDP packets */
|
dptr = dma_map_single(&oct->pci_dev->dev,
|
skb->data,
|
skb->len,
|
DMA_TO_DEVICE);
|
if (dma_mapping_error(&oct->pci_dev->dev, dptr)) {
|
dev_err(&oct->pci_dev->dev, "%s DMA mapping error 1\n",
|
__func__);
|
return NETDEV_TX_BUSY;
|
}
|
|
ndata.cmd.cmd3.dptr = dptr;
|
finfo->dptr = dptr;
|
ndata.reqtype = REQTYPE_NORESP_NET;
|
|
} else {
|
skb_frag_t *frag;
|
struct octnic_gather *g;
|
int i, frags;
|
|
spin_lock(&lio->glist_lock[q_idx]);
|
g = (struct octnic_gather *)
|
lio_list_delete_head(&lio->glist[q_idx]);
|
spin_unlock(&lio->glist_lock[q_idx]);
|
|
if (!g) {
|
netif_info(lio, tx_err, lio->netdev,
|
"Transmit scatter gather: glist null!\n");
|
goto lio_xmit_failed;
|
}
|
|
cmdsetup.s.gather = 1;
|
cmdsetup.s.u.gatherptrs = (skb_shinfo(skb)->nr_frags + 1);
|
octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag);
|
|
memset(g->sg, 0, g->sg_size);
|
|
g->sg[0].ptr[0] = dma_map_single(&oct->pci_dev->dev,
|
skb->data,
|
(skb->len - skb->data_len),
|
DMA_TO_DEVICE);
|
if (dma_mapping_error(&oct->pci_dev->dev, g->sg[0].ptr[0])) {
|
dev_err(&oct->pci_dev->dev, "%s DMA mapping error 2\n",
|
__func__);
|
return NETDEV_TX_BUSY;
|
}
|
add_sg_size(&g->sg[0], (skb->len - skb->data_len), 0);
|
|
frags = skb_shinfo(skb)->nr_frags;
|
i = 1;
|
while (frags--) {
|
frag = &skb_shinfo(skb)->frags[i - 1];
|
|
g->sg[(i >> 2)].ptr[(i & 3)] =
|
skb_frag_dma_map(&oct->pci_dev->dev,
|
frag, 0, skb_frag_size(frag),
|
DMA_TO_DEVICE);
|
if (dma_mapping_error(&oct->pci_dev->dev,
|
g->sg[i >> 2].ptr[i & 3])) {
|
dma_unmap_single(&oct->pci_dev->dev,
|
g->sg[0].ptr[0],
|
skb->len - skb->data_len,
|
DMA_TO_DEVICE);
|
for (j = 1; j < i; j++) {
|
frag = &skb_shinfo(skb)->frags[j - 1];
|
dma_unmap_page(&oct->pci_dev->dev,
|
g->sg[j >> 2].ptr[j & 3],
|
skb_frag_size(frag),
|
DMA_TO_DEVICE);
|
}
|
dev_err(&oct->pci_dev->dev, "%s DMA mapping error 3\n",
|
__func__);
|
return NETDEV_TX_BUSY;
|
}
|
|
add_sg_size(&g->sg[(i >> 2)], skb_frag_size(frag),
|
(i & 3));
|
i++;
|
}
|
|
dptr = g->sg_dma_ptr;
|
|
ndata.cmd.cmd3.dptr = dptr;
|
finfo->dptr = dptr;
|
finfo->g = g;
|
|
ndata.reqtype = REQTYPE_NORESP_NET_SG;
|
}
|
|
irh = (struct octeon_instr_irh *)&ndata.cmd.cmd3.irh;
|
tx_info = (union tx_info *)&ndata.cmd.cmd3.ossp[0];
|
|
if (skb_shinfo(skb)->gso_size) {
|
tx_info->s.gso_size = skb_shinfo(skb)->gso_size;
|
tx_info->s.gso_segs = skb_shinfo(skb)->gso_segs;
|
}
|
|
/* HW insert VLAN tag */
|
if (skb_vlan_tag_present(skb)) {
|
irh->priority = skb_vlan_tag_get(skb) >> VLAN_PRIO_SHIFT;
|
irh->vlan = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
|
}
|
|
xmit_more = netdev_xmit_more();
|
|
if (unlikely(cmdsetup.s.timestamp))
|
status = send_nic_timestamp_pkt(oct, &ndata, finfo, xmit_more);
|
else
|
status = octnet_send_nic_data_pkt(oct, &ndata, xmit_more);
|
if (status == IQ_SEND_FAILED)
|
goto lio_xmit_failed;
|
|
netif_info(lio, tx_queued, lio->netdev, "Transmit queued successfully\n");
|
|
if (status == IQ_SEND_STOP) {
|
dev_err(&oct->pci_dev->dev, "Rcvd IQ_SEND_STOP signal; stopping IQ-%d\n",
|
iq_no);
|
netif_stop_subqueue(netdev, q_idx);
|
}
|
|
netif_trans_update(netdev);
|
|
if (tx_info->s.gso_segs)
|
stats->tx_done += tx_info->s.gso_segs;
|
else
|
stats->tx_done++;
|
stats->tx_tot_bytes += ndata.datasize;
|
|
return NETDEV_TX_OK;
|
|
lio_xmit_failed:
|
stats->tx_dropped++;
|
netif_info(lio, tx_err, lio->netdev, "IQ%d Transmit dropped:%llu\n",
|
iq_no, stats->tx_dropped);
|
if (dptr)
|
dma_unmap_single(&oct->pci_dev->dev, dptr,
|
ndata.datasize, DMA_TO_DEVICE);
|
|
octeon_ring_doorbell_locked(oct, iq_no);
|
|
tx_buffer_free(skb);
|
return NETDEV_TX_OK;
|
}
|
|
/**
|
* liquidio_tx_timeout - Network device Tx timeout
|
* @netdev: pointer to network device
|
* @txqueue: index of the hung transmit queue
|
*/
|
static void liquidio_tx_timeout(struct net_device *netdev, unsigned int txqueue)
|
{
|
struct lio *lio;
|
|
lio = GET_LIO(netdev);
|
|
netif_info(lio, tx_err, lio->netdev,
|
"Transmit timeout tx_dropped:%ld, waking up queues now!!\n",
|
netdev->stats.tx_dropped);
|
netif_trans_update(netdev);
|
wake_txqs(netdev);
|
}
|
|
static int
|
liquidio_vlan_rx_add_vid(struct net_device *netdev,
|
__be16 proto __attribute__((unused)), u16 vid)
|
{
|
struct lio *lio = GET_LIO(netdev);
|
struct octeon_device *oct = lio->oct_dev;
|
struct octnic_ctrl_pkt nctrl;
|
int ret = 0;
|
|
memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
|
|
nctrl.ncmd.u64 = 0;
|
nctrl.ncmd.s.cmd = OCTNET_CMD_ADD_VLAN_FILTER;
|
nctrl.ncmd.s.param1 = vid;
|
nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
|
nctrl.netpndev = (u64)netdev;
|
nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
|
|
ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
|
if (ret) {
|
dev_err(&oct->pci_dev->dev, "Add VLAN filter failed in core (ret: 0x%x)\n",
|
ret);
|
return -EPERM;
|
}
|
|
return 0;
|
}
|
|
static int
|
liquidio_vlan_rx_kill_vid(struct net_device *netdev,
|
__be16 proto __attribute__((unused)), u16 vid)
|
{
|
struct lio *lio = GET_LIO(netdev);
|
struct octeon_device *oct = lio->oct_dev;
|
struct octnic_ctrl_pkt nctrl;
|
int ret = 0;
|
|
memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
|
|
nctrl.ncmd.u64 = 0;
|
nctrl.ncmd.s.cmd = OCTNET_CMD_DEL_VLAN_FILTER;
|
nctrl.ncmd.s.param1 = vid;
|
nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
|
nctrl.netpndev = (u64)netdev;
|
nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
|
|
ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
|
if (ret) {
|
dev_err(&oct->pci_dev->dev, "Del VLAN filter failed in core (ret: 0x%x)\n",
|
ret);
|
if (ret > 0)
|
ret = -EIO;
|
}
|
return ret;
|
}
|
|
/** Sending command to enable/disable RX checksum offload
|
* @param netdev pointer to network device
|
* @param command OCTNET_CMD_TNL_RX_CSUM_CTL
|
* @param rx_cmd_bit OCTNET_CMD_RXCSUM_ENABLE/
|
* OCTNET_CMD_RXCSUM_DISABLE
|
* @returns SUCCESS or FAILURE
|
*/
|
static int liquidio_set_rxcsum_command(struct net_device *netdev, int command,
|
u8 rx_cmd)
|
{
|
struct lio *lio = GET_LIO(netdev);
|
struct octeon_device *oct = lio->oct_dev;
|
struct octnic_ctrl_pkt nctrl;
|
int ret = 0;
|
|
memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
|
|
nctrl.ncmd.u64 = 0;
|
nctrl.ncmd.s.cmd = command;
|
nctrl.ncmd.s.param1 = rx_cmd;
|
nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
|
nctrl.netpndev = (u64)netdev;
|
nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
|
|
ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
|
if (ret) {
|
dev_err(&oct->pci_dev->dev, "DEVFLAGS RXCSUM change failed in core (ret:0x%x)\n",
|
ret);
|
if (ret > 0)
|
ret = -EIO;
|
}
|
return ret;
|
}
|
|
/** Sending command to add/delete VxLAN UDP port to firmware
|
* @param netdev pointer to network device
|
* @param command OCTNET_CMD_VXLAN_PORT_CONFIG
|
* @param vxlan_port VxLAN port to be added or deleted
|
* @param vxlan_cmd_bit OCTNET_CMD_VXLAN_PORT_ADD,
|
* OCTNET_CMD_VXLAN_PORT_DEL
|
* @returns SUCCESS or FAILURE
|
*/
|
static int liquidio_vxlan_port_command(struct net_device *netdev, int command,
|
u16 vxlan_port, u8 vxlan_cmd_bit)
|
{
|
struct lio *lio = GET_LIO(netdev);
|
struct octeon_device *oct = lio->oct_dev;
|
struct octnic_ctrl_pkt nctrl;
|
int ret = 0;
|
|
memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
|
|
nctrl.ncmd.u64 = 0;
|
nctrl.ncmd.s.cmd = command;
|
nctrl.ncmd.s.more = vxlan_cmd_bit;
|
nctrl.ncmd.s.param1 = vxlan_port;
|
nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
|
nctrl.netpndev = (u64)netdev;
|
nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
|
|
ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
|
if (ret) {
|
dev_err(&oct->pci_dev->dev,
|
"DEVFLAGS VxLAN port add/delete failed in core (ret : 0x%x)\n",
|
ret);
|
if (ret > 0)
|
ret = -EIO;
|
}
|
return ret;
|
}
|
|
static int liquidio_udp_tunnel_set_port(struct net_device *netdev,
|
unsigned int table, unsigned int entry,
|
struct udp_tunnel_info *ti)
|
{
|
return liquidio_vxlan_port_command(netdev,
|
OCTNET_CMD_VXLAN_PORT_CONFIG,
|
htons(ti->port),
|
OCTNET_CMD_VXLAN_PORT_ADD);
|
}
|
|
static int liquidio_udp_tunnel_unset_port(struct net_device *netdev,
|
unsigned int table,
|
unsigned int entry,
|
struct udp_tunnel_info *ti)
|
{
|
return liquidio_vxlan_port_command(netdev,
|
OCTNET_CMD_VXLAN_PORT_CONFIG,
|
htons(ti->port),
|
OCTNET_CMD_VXLAN_PORT_DEL);
|
}
|
|
static const struct udp_tunnel_nic_info liquidio_udp_tunnels = {
|
.set_port = liquidio_udp_tunnel_set_port,
|
.unset_port = liquidio_udp_tunnel_unset_port,
|
.tables = {
|
{ .n_entries = 1024, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
|
},
|
};
|
|
/** \brief Net device fix features
|
* @param netdev pointer to network device
|
* @param request features requested
|
* @returns updated features list
|
*/
|
static netdev_features_t liquidio_fix_features(struct net_device *netdev,
|
netdev_features_t request)
|
{
|
struct lio *lio = netdev_priv(netdev);
|
|
if ((request & NETIF_F_RXCSUM) &&
|
!(lio->dev_capability & NETIF_F_RXCSUM))
|
request &= ~NETIF_F_RXCSUM;
|
|
if ((request & NETIF_F_HW_CSUM) &&
|
!(lio->dev_capability & NETIF_F_HW_CSUM))
|
request &= ~NETIF_F_HW_CSUM;
|
|
if ((request & NETIF_F_TSO) && !(lio->dev_capability & NETIF_F_TSO))
|
request &= ~NETIF_F_TSO;
|
|
if ((request & NETIF_F_TSO6) && !(lio->dev_capability & NETIF_F_TSO6))
|
request &= ~NETIF_F_TSO6;
|
|
if ((request & NETIF_F_LRO) && !(lio->dev_capability & NETIF_F_LRO))
|
request &= ~NETIF_F_LRO;
|
|
/* Disable LRO if RXCSUM is off */
|
if (!(request & NETIF_F_RXCSUM) && (netdev->features & NETIF_F_LRO) &&
|
(lio->dev_capability & NETIF_F_LRO))
|
request &= ~NETIF_F_LRO;
|
|
return request;
|
}
|
|
/** \brief Net device set features
|
* @param netdev pointer to network device
|
* @param features features to enable/disable
|
*/
|
static int liquidio_set_features(struct net_device *netdev,
|
netdev_features_t features)
|
{
|
struct lio *lio = netdev_priv(netdev);
|
|
if (!((netdev->features ^ features) & NETIF_F_LRO))
|
return 0;
|
|
if ((features & NETIF_F_LRO) && (lio->dev_capability & NETIF_F_LRO))
|
liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE,
|
OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
|
else if (!(features & NETIF_F_LRO) &&
|
(lio->dev_capability & NETIF_F_LRO))
|
liquidio_set_feature(netdev, OCTNET_CMD_LRO_DISABLE,
|
OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
|
if (!(netdev->features & NETIF_F_RXCSUM) &&
|
(lio->enc_dev_capability & NETIF_F_RXCSUM) &&
|
(features & NETIF_F_RXCSUM))
|
liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
|
OCTNET_CMD_RXCSUM_ENABLE);
|
else if ((netdev->features & NETIF_F_RXCSUM) &&
|
(lio->enc_dev_capability & NETIF_F_RXCSUM) &&
|
!(features & NETIF_F_RXCSUM))
|
liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
|
OCTNET_CMD_RXCSUM_DISABLE);
|
|
return 0;
|
}
|
|
static const struct net_device_ops lionetdevops = {
|
.ndo_open = liquidio_open,
|
.ndo_stop = liquidio_stop,
|
.ndo_start_xmit = liquidio_xmit,
|
.ndo_get_stats64 = liquidio_get_stats64,
|
.ndo_set_mac_address = liquidio_set_mac,
|
.ndo_set_rx_mode = liquidio_set_mcast_list,
|
.ndo_tx_timeout = liquidio_tx_timeout,
|
.ndo_vlan_rx_add_vid = liquidio_vlan_rx_add_vid,
|
.ndo_vlan_rx_kill_vid = liquidio_vlan_rx_kill_vid,
|
.ndo_change_mtu = liquidio_change_mtu,
|
.ndo_do_ioctl = liquidio_ioctl,
|
.ndo_fix_features = liquidio_fix_features,
|
.ndo_set_features = liquidio_set_features,
|
.ndo_udp_tunnel_add = udp_tunnel_nic_add_port,
|
.ndo_udp_tunnel_del = udp_tunnel_nic_del_port,
|
};
|
|
static int lio_nic_info(struct octeon_recv_info *recv_info, void *buf)
|
{
|
struct octeon_device *oct = (struct octeon_device *)buf;
|
struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt;
|
union oct_link_status *ls;
|
int gmxport = 0;
|
int i;
|
|
if (recv_pkt->buffer_size[0] != (sizeof(*ls) + OCT_DROQ_INFO_SIZE)) {
|
dev_err(&oct->pci_dev->dev, "Malformed NIC_INFO, len=%d, ifidx=%d\n",
|
recv_pkt->buffer_size[0],
|
recv_pkt->rh.r_nic_info.gmxport);
|
goto nic_info_err;
|
}
|
|
gmxport = recv_pkt->rh.r_nic_info.gmxport;
|
ls = (union oct_link_status *)(get_rbd(recv_pkt->buffer_ptr[0]) +
|
OCT_DROQ_INFO_SIZE);
|
|
octeon_swap_8B_data((u64 *)ls, (sizeof(union oct_link_status)) >> 3);
|
|
for (i = 0; i < oct->ifcount; i++) {
|
if (oct->props[i].gmxport == gmxport) {
|
update_link_status(oct->props[i].netdev, ls);
|
break;
|
}
|
}
|
|
nic_info_err:
|
for (i = 0; i < recv_pkt->buffer_count; i++)
|
recv_buffer_free(recv_pkt->buffer_ptr[i]);
|
octeon_free_recv_info(recv_info);
|
return 0;
|
}
|
|
/**
|
* setup_nic_devices - Setup network interfaces
|
* @octeon_dev: octeon device
|
*
|
* Called during init time for each device. It assumes the NIC
|
* is already up and running. The link information for each
|
* interface is passed in link_info.
|
*/
|
static int setup_nic_devices(struct octeon_device *octeon_dev)
|
{
|
int retval, num_iqueues, num_oqueues;
|
u32 resp_size, data_size;
|
struct liquidio_if_cfg_resp *resp;
|
struct octeon_soft_command *sc;
|
union oct_nic_if_cfg if_cfg;
|
struct octdev_props *props;
|
struct net_device *netdev;
|
struct lio_version *vdata;
|
struct lio *lio = NULL;
|
u8 mac[ETH_ALEN], i, j;
|
u32 ifidx_or_pfnum;
|
|
ifidx_or_pfnum = octeon_dev->pf_num;
|
|
/* This is to handle link status changes */
|
octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC, OPCODE_NIC_INFO,
|
lio_nic_info, octeon_dev);
|
|
/* REQTYPE_RESP_NET and REQTYPE_SOFT_COMMAND do not have free functions.
|
* They are handled directly.
|
*/
|
octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET,
|
free_netbuf);
|
|
octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET_SG,
|
free_netsgbuf);
|
|
octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_RESP_NET_SG,
|
free_netsgbuf_with_resp);
|
|
for (i = 0; i < octeon_dev->ifcount; i++) {
|
resp_size = sizeof(struct liquidio_if_cfg_resp);
|
data_size = sizeof(struct lio_version);
|
sc = (struct octeon_soft_command *)
|
octeon_alloc_soft_command(octeon_dev, data_size,
|
resp_size, 0);
|
resp = (struct liquidio_if_cfg_resp *)sc->virtrptr;
|
vdata = (struct lio_version *)sc->virtdptr;
|
|
*((u64 *)vdata) = 0;
|
vdata->major = cpu_to_be16(LIQUIDIO_BASE_MAJOR_VERSION);
|
vdata->minor = cpu_to_be16(LIQUIDIO_BASE_MINOR_VERSION);
|
vdata->micro = cpu_to_be16(LIQUIDIO_BASE_MICRO_VERSION);
|
|
if_cfg.u64 = 0;
|
|
if_cfg.s.num_iqueues = octeon_dev->sriov_info.rings_per_vf;
|
if_cfg.s.num_oqueues = octeon_dev->sriov_info.rings_per_vf;
|
if_cfg.s.base_queue = 0;
|
|
sc->iq_no = 0;
|
|
octeon_prepare_soft_command(octeon_dev, sc, OPCODE_NIC,
|
OPCODE_NIC_IF_CFG, 0, if_cfg.u64,
|
0);
|
|
init_completion(&sc->complete);
|
sc->sc_status = OCTEON_REQUEST_PENDING;
|
|
retval = octeon_send_soft_command(octeon_dev, sc);
|
if (retval == IQ_SEND_FAILED) {
|
dev_err(&octeon_dev->pci_dev->dev,
|
"iq/oq config failed status: %x\n", retval);
|
/* Soft instr is freed by driver in case of failure. */
|
octeon_free_soft_command(octeon_dev, sc);
|
return(-EIO);
|
}
|
|
/* Sleep on a wait queue till the cond flag indicates that the
|
* response arrived or timed-out.
|
*/
|
retval = wait_for_sc_completion_timeout(octeon_dev, sc, 0);
|
if (retval)
|
return retval;
|
|
retval = resp->status;
|
if (retval) {
|
dev_err(&octeon_dev->pci_dev->dev,
|
"iq/oq config failed, retval = %d\n", retval);
|
WRITE_ONCE(sc->caller_is_done, true);
|
return -EIO;
|
}
|
|
snprintf(octeon_dev->fw_info.liquidio_firmware_version,
|
32, "%s",
|
resp->cfg_info.liquidio_firmware_version);
|
|
octeon_swap_8B_data((u64 *)(&resp->cfg_info),
|
(sizeof(struct liquidio_if_cfg_info)) >> 3);
|
|
num_iqueues = hweight64(resp->cfg_info.iqmask);
|
num_oqueues = hweight64(resp->cfg_info.oqmask);
|
|
if (!(num_iqueues) || !(num_oqueues)) {
|
dev_err(&octeon_dev->pci_dev->dev,
|
"Got bad iqueues (%016llx) or oqueues (%016llx) from firmware.\n",
|
resp->cfg_info.iqmask, resp->cfg_info.oqmask);
|
WRITE_ONCE(sc->caller_is_done, true);
|
goto setup_nic_dev_done;
|
}
|
dev_dbg(&octeon_dev->pci_dev->dev,
|
"interface %d, iqmask %016llx, oqmask %016llx, numiqueues %d, numoqueues %d\n",
|
i, resp->cfg_info.iqmask, resp->cfg_info.oqmask,
|
num_iqueues, num_oqueues);
|
|
netdev = alloc_etherdev_mq(LIO_SIZE, num_iqueues);
|
|
if (!netdev) {
|
dev_err(&octeon_dev->pci_dev->dev, "Device allocation failed\n");
|
WRITE_ONCE(sc->caller_is_done, true);
|
goto setup_nic_dev_done;
|
}
|
|
SET_NETDEV_DEV(netdev, &octeon_dev->pci_dev->dev);
|
|
/* Associate the routines that will handle different
|
* netdev tasks.
|
*/
|
netdev->netdev_ops = &lionetdevops;
|
|
lio = GET_LIO(netdev);
|
|
memset(lio, 0, sizeof(struct lio));
|
|
lio->ifidx = ifidx_or_pfnum;
|
|
props = &octeon_dev->props[i];
|
props->gmxport = resp->cfg_info.linfo.gmxport;
|
props->netdev = netdev;
|
|
lio->linfo.num_rxpciq = num_oqueues;
|
lio->linfo.num_txpciq = num_iqueues;
|
|
for (j = 0; j < num_oqueues; j++) {
|
lio->linfo.rxpciq[j].u64 =
|
resp->cfg_info.linfo.rxpciq[j].u64;
|
}
|
for (j = 0; j < num_iqueues; j++) {
|
lio->linfo.txpciq[j].u64 =
|
resp->cfg_info.linfo.txpciq[j].u64;
|
}
|
|
lio->linfo.hw_addr = resp->cfg_info.linfo.hw_addr;
|
lio->linfo.gmxport = resp->cfg_info.linfo.gmxport;
|
lio->linfo.link.u64 = resp->cfg_info.linfo.link.u64;
|
lio->linfo.macaddr_is_admin_asgnd =
|
resp->cfg_info.linfo.macaddr_is_admin_asgnd;
|
lio->linfo.macaddr_spoofchk =
|
resp->cfg_info.linfo.macaddr_spoofchk;
|
|
lio->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
|
|
lio->dev_capability = NETIF_F_HIGHDMA
|
| NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM
|
| NETIF_F_SG | NETIF_F_RXCSUM
|
| NETIF_F_TSO | NETIF_F_TSO6
|
| NETIF_F_GRO
|
| NETIF_F_LRO;
|
netif_set_gso_max_size(netdev, OCTNIC_GSO_MAX_SIZE);
|
|
/* Copy of transmit encapsulation capabilities:
|
* TSO, TSO6, Checksums for this device
|
*/
|
lio->enc_dev_capability = NETIF_F_IP_CSUM
|
| NETIF_F_IPV6_CSUM
|
| NETIF_F_GSO_UDP_TUNNEL
|
| NETIF_F_HW_CSUM | NETIF_F_SG
|
| NETIF_F_RXCSUM
|
| NETIF_F_TSO | NETIF_F_TSO6
|
| NETIF_F_LRO;
|
|
netdev->hw_enc_features =
|
(lio->enc_dev_capability & ~NETIF_F_LRO);
|
netdev->udp_tunnel_nic_info = &liquidio_udp_tunnels;
|
|
netdev->vlan_features = lio->dev_capability;
|
/* Add any unchangeable hw features */
|
lio->dev_capability |= NETIF_F_HW_VLAN_CTAG_FILTER |
|
NETIF_F_HW_VLAN_CTAG_RX |
|
NETIF_F_HW_VLAN_CTAG_TX;
|
|
netdev->features = (lio->dev_capability & ~NETIF_F_LRO);
|
|
netdev->hw_features = lio->dev_capability;
|
netdev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_RX;
|
|
/* MTU range: 68 - 16000 */
|
netdev->min_mtu = LIO_MIN_MTU_SIZE;
|
netdev->max_mtu = LIO_MAX_MTU_SIZE;
|
|
WRITE_ONCE(sc->caller_is_done, true);
|
|
/* Point to the properties for octeon device to which this
|
* interface belongs.
|
*/
|
lio->oct_dev = octeon_dev;
|
lio->octprops = props;
|
lio->netdev = netdev;
|
|
dev_dbg(&octeon_dev->pci_dev->dev,
|
"if%d gmx: %d hw_addr: 0x%llx\n", i,
|
lio->linfo.gmxport, CVM_CAST64(lio->linfo.hw_addr));
|
|
/* 64-bit swap required on LE machines */
|
octeon_swap_8B_data(&lio->linfo.hw_addr, 1);
|
for (j = 0; j < ETH_ALEN; j++)
|
mac[j] = *((u8 *)(((u8 *)&lio->linfo.hw_addr) + 2 + j));
|
|
/* Copy MAC Address to OS network device structure */
|
ether_addr_copy(netdev->dev_addr, mac);
|
|
if (liquidio_setup_io_queues(octeon_dev, i,
|
lio->linfo.num_txpciq,
|
lio->linfo.num_rxpciq)) {
|
dev_err(&octeon_dev->pci_dev->dev, "I/O queues creation failed\n");
|
goto setup_nic_dev_free;
|
}
|
|
ifstate_set(lio, LIO_IFSTATE_DROQ_OPS);
|
|
/* For VFs, enable Octeon device interrupts here,
|
* as this is contingent upon IO queue setup
|
*/
|
octeon_dev->fn_list.enable_interrupt(octeon_dev,
|
OCTEON_ALL_INTR);
|
|
/* By default all interfaces on a single Octeon uses the same
|
* tx and rx queues
|
*/
|
lio->txq = lio->linfo.txpciq[0].s.q_no;
|
lio->rxq = lio->linfo.rxpciq[0].s.q_no;
|
|
lio->tx_qsize = octeon_get_tx_qsize(octeon_dev, lio->txq);
|
lio->rx_qsize = octeon_get_rx_qsize(octeon_dev, lio->rxq);
|
|
if (lio_setup_glists(octeon_dev, lio, num_iqueues)) {
|
dev_err(&octeon_dev->pci_dev->dev,
|
"Gather list allocation failed\n");
|
goto setup_nic_dev_free;
|
}
|
|
/* Register ethtool support */
|
liquidio_set_ethtool_ops(netdev);
|
if (lio->oct_dev->chip_id == OCTEON_CN23XX_VF_VID)
|
octeon_dev->priv_flags = OCT_PRIV_FLAG_DEFAULT;
|
else
|
octeon_dev->priv_flags = 0x0;
|
|
if (netdev->features & NETIF_F_LRO)
|
liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE,
|
OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
|
|
if (setup_link_status_change_wq(netdev))
|
goto setup_nic_dev_free;
|
|
if (setup_rx_oom_poll_fn(netdev))
|
goto setup_nic_dev_free;
|
|
/* Register the network device with the OS */
|
if (register_netdev(netdev)) {
|
dev_err(&octeon_dev->pci_dev->dev, "Device registration failed\n");
|
goto setup_nic_dev_free;
|
}
|
|
dev_dbg(&octeon_dev->pci_dev->dev,
|
"Setup NIC ifidx:%d mac:%02x%02x%02x%02x%02x%02x\n",
|
i, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
|
netif_carrier_off(netdev);
|
lio->link_changes++;
|
|
ifstate_set(lio, LIO_IFSTATE_REGISTERED);
|
|
/* Sending command to firmware to enable Rx checksum offload
|
* by default at the time of setup of Liquidio driver for
|
* this device
|
*/
|
liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
|
OCTNET_CMD_RXCSUM_ENABLE);
|
liquidio_set_feature(netdev, OCTNET_CMD_TNL_TX_CSUM_CTL,
|
OCTNET_CMD_TXCSUM_ENABLE);
|
|
dev_dbg(&octeon_dev->pci_dev->dev,
|
"NIC ifidx:%d Setup successful\n", i);
|
|
octeon_dev->no_speed_setting = 1;
|
}
|
|
return 0;
|
|
setup_nic_dev_free:
|
|
while (i--) {
|
dev_err(&octeon_dev->pci_dev->dev,
|
"NIC ifidx:%d Setup failed\n", i);
|
liquidio_destroy_nic_device(octeon_dev, i);
|
}
|
|
setup_nic_dev_done:
|
|
return -ENODEV;
|
}
|
|
/**
|
* liquidio_init_nic_module - initialize the NIC
|
* @oct: octeon device
|
*
|
* This initialization routine is called once the Octeon device application is
|
* up and running
|
*/
|
static int liquidio_init_nic_module(struct octeon_device *oct)
|
{
|
int num_nic_ports = 1;
|
int i, retval = 0;
|
|
dev_dbg(&oct->pci_dev->dev, "Initializing network interfaces\n");
|
|
/* only default iq and oq were initialized
|
* initialize the rest as well run port_config command for each port
|
*/
|
oct->ifcount = num_nic_ports;
|
memset(oct->props, 0,
|
sizeof(struct octdev_props) * num_nic_ports);
|
|
for (i = 0; i < MAX_OCTEON_LINKS; i++)
|
oct->props[i].gmxport = -1;
|
|
retval = setup_nic_devices(oct);
|
if (retval) {
|
dev_err(&oct->pci_dev->dev, "Setup NIC devices failed\n");
|
goto octnet_init_failure;
|
}
|
|
dev_dbg(&oct->pci_dev->dev, "Network interfaces ready\n");
|
|
return retval;
|
|
octnet_init_failure:
|
|
oct->ifcount = 0;
|
|
return retval;
|
}
|
|
/**
|
* octeon_device_init - Device initialization for each Octeon device that is probed
|
* @oct: octeon device
|
*/
|
static int octeon_device_init(struct octeon_device *oct)
|
{
|
u32 rev_id;
|
int j;
|
|
atomic_set(&oct->status, OCT_DEV_BEGIN_STATE);
|
|
/* Enable access to the octeon device and make its DMA capability
|
* known to the OS.
|
*/
|
if (octeon_pci_os_setup(oct))
|
return 1;
|
atomic_set(&oct->status, OCT_DEV_PCI_ENABLE_DONE);
|
|
oct->chip_id = OCTEON_CN23XX_VF_VID;
|
pci_read_config_dword(oct->pci_dev, 8, &rev_id);
|
oct->rev_id = rev_id & 0xff;
|
|
if (cn23xx_setup_octeon_vf_device(oct))
|
return 1;
|
|
atomic_set(&oct->status, OCT_DEV_PCI_MAP_DONE);
|
|
oct->app_mode = CVM_DRV_NIC_APP;
|
|
/* Initialize the dispatch mechanism used to push packets arriving on
|
* Octeon Output queues.
|
*/
|
if (octeon_init_dispatch_list(oct))
|
return 1;
|
|
atomic_set(&oct->status, OCT_DEV_DISPATCH_INIT_DONE);
|
|
if (octeon_set_io_queues_off(oct)) {
|
dev_err(&oct->pci_dev->dev, "setting io queues off failed\n");
|
return 1;
|
}
|
|
if (oct->fn_list.setup_device_regs(oct)) {
|
dev_err(&oct->pci_dev->dev, "device registers configuration failed\n");
|
return 1;
|
}
|
|
/* Initialize soft command buffer pool */
|
if (octeon_setup_sc_buffer_pool(oct)) {
|
dev_err(&oct->pci_dev->dev, "sc buffer pool allocation failed\n");
|
return 1;
|
}
|
atomic_set(&oct->status, OCT_DEV_SC_BUFF_POOL_INIT_DONE);
|
|
/* Setup the data structures that manage this Octeon's Input queues. */
|
if (octeon_setup_instr_queues(oct)) {
|
dev_err(&oct->pci_dev->dev, "instruction queue initialization failed\n");
|
return 1;
|
}
|
atomic_set(&oct->status, OCT_DEV_INSTR_QUEUE_INIT_DONE);
|
|
/* Initialize lists to manage the requests of different types that
|
* arrive from user & kernel applications for this octeon device.
|
*/
|
if (octeon_setup_response_list(oct)) {
|
dev_err(&oct->pci_dev->dev, "Response list allocation failed\n");
|
return 1;
|
}
|
atomic_set(&oct->status, OCT_DEV_RESP_LIST_INIT_DONE);
|
|
if (octeon_setup_output_queues(oct)) {
|
dev_err(&oct->pci_dev->dev, "Output queue initialization failed\n");
|
return 1;
|
}
|
atomic_set(&oct->status, OCT_DEV_DROQ_INIT_DONE);
|
|
if (oct->fn_list.setup_mbox(oct)) {
|
dev_err(&oct->pci_dev->dev, "Mailbox setup failed\n");
|
return 1;
|
}
|
atomic_set(&oct->status, OCT_DEV_MBOX_SETUP_DONE);
|
|
if (octeon_allocate_ioq_vector(oct, oct->sriov_info.rings_per_vf)) {
|
dev_err(&oct->pci_dev->dev, "ioq vector allocation failed\n");
|
return 1;
|
}
|
atomic_set(&oct->status, OCT_DEV_MSIX_ALLOC_VECTOR_DONE);
|
|
dev_info(&oct->pci_dev->dev, "OCTEON_CN23XX VF: %d ioqs\n",
|
oct->sriov_info.rings_per_vf);
|
|
/* Setup the interrupt handler and record the INT SUM register address*/
|
if (octeon_setup_interrupt(oct, oct->sriov_info.rings_per_vf))
|
return 1;
|
|
atomic_set(&oct->status, OCT_DEV_INTR_SET_DONE);
|
|
/* ***************************************************************
|
* The interrupts need to be enabled for the PF<-->VF handshake.
|
* They are [re]-enabled after the PF<-->VF handshake so that the
|
* correct OQ tick value is used (i.e. the value retrieved from
|
* the PF as part of the handshake).
|
*/
|
|
/* Enable Octeon device interrupts */
|
oct->fn_list.enable_interrupt(oct, OCTEON_ALL_INTR);
|
|
if (cn23xx_octeon_pfvf_handshake(oct))
|
return 1;
|
|
/* Here we [re]-enable the interrupts so that the correct OQ tick value
|
* is used (i.e. the value that was retrieved during the handshake)
|
*/
|
|
/* Enable Octeon device interrupts */
|
oct->fn_list.enable_interrupt(oct, OCTEON_ALL_INTR);
|
/* *************************************************************** */
|
|
/* Enable the input and output queues for this Octeon device */
|
if (oct->fn_list.enable_io_queues(oct)) {
|
dev_err(&oct->pci_dev->dev, "enabling io queues failed\n");
|
return 1;
|
}
|
|
atomic_set(&oct->status, OCT_DEV_IO_QUEUES_DONE);
|
|
atomic_set(&oct->status, OCT_DEV_HOST_OK);
|
|
/* Send Credit for Octeon Output queues. Credits are always sent after
|
* the output queue is enabled.
|
*/
|
for (j = 0; j < oct->num_oqs; j++)
|
writel(oct->droq[j]->max_count, oct->droq[j]->pkts_credit_reg);
|
|
/* Packets can start arriving on the output queues from this point. */
|
|
atomic_set(&oct->status, OCT_DEV_CORE_OK);
|
|
atomic_set(&oct->status, OCT_DEV_RUNNING);
|
|
if (liquidio_init_nic_module(oct))
|
return 1;
|
|
return 0;
|
}
|
|
static int __init liquidio_vf_init(void)
|
{
|
octeon_init_device_list(0);
|
return pci_register_driver(&liquidio_vf_pci_driver);
|
}
|
|
static void __exit liquidio_vf_exit(void)
|
{
|
pci_unregister_driver(&liquidio_vf_pci_driver);
|
|
pr_info("LiquidIO_VF network module is now unloaded\n");
|
}
|
|
module_init(liquidio_vf_init);
|
module_exit(liquidio_vf_exit);
|
