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2445 lines
64 KiB
2445 lines
64 KiB
/********************************************************************** |
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* Author: Cavium, Inc. |
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* |
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* Contact: [email protected] |
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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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|
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MODULE_AUTHOR("Cavium Networks, <[email protected]>"); |
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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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|
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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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|
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#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK) |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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do { |
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pending_pkts = 0; |
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|
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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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|
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} while (retry-- && pending_pkts); |
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|
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return pkt_cnt; |
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} |
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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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|
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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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|
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/* To allow for in-flight requests */ |
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schedule_timeout_uninterruptible(100); |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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/** |
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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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|
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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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|
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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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|
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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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|
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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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|
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pci_disable_device(oct->pci_dev); |
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} |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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/** |
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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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|
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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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|
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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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|
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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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|
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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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/** |
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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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|
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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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|
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print_link_info(netdev); |
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lio->link_changes++; |
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|
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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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|
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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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|
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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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/** |
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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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|
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oct_dev = octeon_allocate_device(pdev->device, |
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sizeof(struct octeon_device_priv)); |
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|
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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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|
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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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|
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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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|
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/* set linux specific device pointer */ |
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oct_dev->pci_dev = pdev; |
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|
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oct_dev->subsystem_id = pdev->subsystem_vendor | |
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(pdev->subsystem_device << 16); |
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|
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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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|
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return 0; |
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} |
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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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|
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pci_cfg_access_lock(oct->pci_dev); |
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|
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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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|
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pcie_flr(oct->pci_dev); |
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|
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pci_cfg_access_unlock(oct->pci_dev); |
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|
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pci_restore_state(oct->pci_dev); |
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} |
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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); |
|
kfree(oct->msix_entries); |
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oct->msix_entries = NULL; |
|
kfree(oct->irq_name_storage); |
|
oct->irq_name_storage = NULL; |
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} |
|
/* Soft reset the octeon device before exiting */ |
|
if (!pcie_reset_flr(oct->pci_dev, PCI_RESET_PROBE)) |
|
octeon_pci_flr(oct); |
|
else |
|
cn23xx_vf_ask_pf_to_do_flr(oct); |
|
|
|
fallthrough; |
|
case OCT_DEV_MSIX_ALLOC_VECTOR_DONE: |
|
octeon_free_ioq_vector(oct); |
|
|
|
fallthrough; |
|
case OCT_DEV_MBOX_SETUP_DONE: |
|
oct->fn_list.free_mbox(oct); |
|
|
|
fallthrough; |
|
case OCT_DEV_IN_RESET: |
|
case OCT_DEV_DROQ_INIT_DONE: |
|
mdelay(100); |
|
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; |
|
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; |
|
octeon_delete_instr_queue(oct, i); |
|
} |
|
|
|
fallthrough; |
|
case OCT_DEV_SC_BUFF_POOL_INIT_DONE: |
|
octeon_free_sc_buffer_pool(oct); |
|
|
|
fallthrough; |
|
case OCT_DEV_DISPATCH_INIT_DONE: |
|
octeon_delete_dispatch_list(oct); |
|
cancel_delayed_work_sync(&oct->nic_poll_work.work); |
|
|
|
fallthrough; |
|
case OCT_DEV_PCI_MAP_DONE: |
|
octeon_unmap_pci_barx(oct, 0); |
|
octeon_unmap_pci_barx(oct, 1); |
|
|
|
fallthrough; |
|
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]; |
|
|
|
dma_unmap_page(&lio->oct_dev->pci_dev->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]; |
|
|
|
dma_unmap_page(&lio->oct_dev->pci_dev->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_eth_ioctl = liquidio_ioctl, |
|
.ndo_fix_features = liquidio_fix_features, |
|
.ndo_set_features = liquidio_set_features, |
|
}; |
|
|
|
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);
|
|
|