| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Raghu Vatsavayi | 14937 | 75.00% | 46 | 34.33% |
| Intiyaz Basha | 1165 | 5.85% | 21 | 15.67% |
| Felix Manlunas | 989 | 4.97% | 10 | 7.46% |
| VSR Burru | 670 | 3.36% | 2 | 1.49% |
| Rick Farrington | 655 | 3.29% | 12 | 8.96% |
| Weilin Chang | 490 | 2.46% | 3 | 2.24% |
| Vijaya Mohan Guvva | 472 | 2.37% | 3 | 2.24% |
| Pradeep Nalla | 211 | 1.06% | 2 | 1.49% |
| Prasad Kanneganti | 144 | 0.72% | 3 | 2.24% |
| Derek Chickles | 37 | 0.19% | 3 | 2.24% |
| Satanand Burla | 25 | 0.13% | 3 | 2.24% |
| Kangjie Lu | 21 | 0.11% | 1 | 0.75% |
| Matthew Wilcox | 20 | 0.10% | 1 | 0.75% |
| Jarod Wilson | 13 | 0.07% | 1 | 0.75% |
| Florian Westphal | 11 | 0.06% | 3 | 2.24% |
| Florian Fainelli | 10 | 0.05% | 1 | 0.75% |
| Nicholas Mc Guire | 7 | 0.04% | 2 | 1.49% |
| Dan Carpenter | 6 | 0.03% | 1 | 0.75% |
| Eli Britstein | 5 | 0.03% | 1 | 0.75% |
| Bhaktipriya Shridhar | 5 | 0.03% | 1 | 0.75% |
| Michael S. Tsirkin | 4 | 0.02% | 1 | 0.75% |
| Yue haibing | 4 | 0.02% | 3 | 2.24% |
| Russell King | 3 | 0.02% | 1 | 0.75% |
| Miroslav Lichvar | 3 | 0.02% | 1 | 0.75% |
| Kefeng Wang | 2 | 0.01% | 1 | 0.75% |
| Joe Perches | 2 | 0.01% | 2 | 1.49% |
| Arnd Bergmann | 2 | 0.01% | 2 | 1.49% |
| Colin Ian King | 1 | 0.01% | 1 | 0.75% |
| Julia Lawall | 1 | 0.01% | 1 | 0.75% |
| Gustavo A. R. Silva | 1 | 0.01% | 1 | 0.75% |
| Total | 19916 | 134 |
/********************************************************************** * Author: Cavium, Inc. * * Contact: support@cavium.com * Please include "LiquidIO" in the subject. * * Copyright (c) 2003-2016 Cavium, Inc. * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, Version 2, as * published by the Free Software Foundation. * * This file is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. See the GNU General Public License for more details. ***********************************************************************/ #include <linux/module.h> #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/firmware.h> #include <net/vxlan.h> #include <linux/kthread.h> #include "liquidio_common.h" #include "octeon_droq.h" #include "octeon_iq.h" #include "response_manager.h" #include "octeon_device.h" #include "octeon_nic.h" #include "octeon_main.h" #include "octeon_network.h" #include "cn66xx_regs.h" #include "cn66xx_device.h" #include "cn68xx_device.h" #include "cn23xx_pf_device.h" #include "liquidio_image.h" #include "lio_vf_rep.h" MODULE_AUTHOR("Cavium Networks, <support@cavium.com>"); MODULE_DESCRIPTION("Cavium LiquidIO Intelligent Server Adapter Driver"); MODULE_LICENSE("GPL"); MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_210SV_NAME "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX); MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_210NV_NAME "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX); MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_410NV_NAME "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX); MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_23XX_NAME "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX); static int ddr_timeout = 10000; module_param(ddr_timeout, int, 0644); MODULE_PARM_DESC(ddr_timeout, "Number of milliseconds to wait for DDR initialization. 0 waits for ddr_timeout to be set to non-zero value before starting to check"); #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK) static int debug = -1; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "NETIF_MSG debug bits"); static char fw_type[LIO_MAX_FW_TYPE_LEN] = LIO_FW_NAME_TYPE_AUTO; module_param_string(fw_type, fw_type, sizeof(fw_type), 0444); MODULE_PARM_DESC(fw_type, "Type of firmware to be loaded (default is \"auto\"), which uses firmware in flash, if present, else loads \"nic\"."); static u32 console_bitmask; module_param(console_bitmask, int, 0644); MODULE_PARM_DESC(console_bitmask, "Bitmask indicating which consoles have debug output redirected to syslog."); /** * \brief determines if a given console has debug enabled. * @param console console to check * @returns 1 = enabled. 0 otherwise */ static int octeon_console_debug_enabled(u32 console) { return (console_bitmask >> (console)) & 0x1; } /* Polling interval for determining when NIC application is alive */ #define LIQUIDIO_STARTER_POLL_INTERVAL_MS 100 /* runtime link query interval */ #define LIQUIDIO_LINK_QUERY_INTERVAL_MS 1000 /* update localtime to octeon firmware every 60 seconds. * make firmware to use same time reference, so that it will be easy to * correlate firmware logged events/errors with host events, for debugging. */ #define LIO_SYNC_OCTEON_TIME_INTERVAL_MS 60000 /* time to wait for possible in-flight requests in milliseconds */ #define WAIT_INFLIGHT_REQUEST msecs_to_jiffies(1000) struct lio_trusted_vf_ctx { struct completion complete; int status; }; struct oct_link_status_resp { u64 rh; struct oct_link_info link_info; u64 status; }; struct oct_timestamp_resp { u64 rh; u64 timestamp; u64 status; }; #define OCT_TIMESTAMP_RESP_SIZE (sizeof(struct oct_timestamp_resp)) union tx_info { u64 u64; struct { #ifdef __BIG_ENDIAN_BITFIELD u16 gso_size; u16 gso_segs; u32 reserved; #else u32 reserved; u16 gso_segs; u16 gso_size; #endif } s; }; /** Octeon device properties to be used by the NIC module. * Each octeon device in the system will be represented * by this structure in the NIC module. */ #define OCTNIC_GSO_MAX_HEADER_SIZE 128 #define OCTNIC_GSO_MAX_SIZE \ (CN23XX_DEFAULT_INPUT_JABBER - OCTNIC_GSO_MAX_HEADER_SIZE) struct handshake { struct completion init; struct completion started; struct pci_dev *pci_dev; int init_ok; int started_ok; }; #ifdef CONFIG_PCI_IOV static int liquidio_enable_sriov(struct pci_dev *dev, int num_vfs); #endif static int octeon_dbg_console_print(struct octeon_device *oct, u32 console_num, char *prefix, char *suffix); static int octeon_device_init(struct octeon_device *); static int liquidio_stop(struct net_device *netdev); static void liquidio_remove(struct pci_dev *pdev); static int liquidio_probe(struct pci_dev *pdev, const struct pci_device_id *ent); static int liquidio_set_vf_link_state(struct net_device *netdev, int vfidx, int linkstate); static struct handshake handshake[MAX_OCTEON_DEVICES]; static struct completion first_stage; static void octeon_droq_bh(unsigned long pdev) { int q_no; int reschedule = 0; struct octeon_device *oct = (struct octeon_device *)pdev; struct octeon_device_priv *oct_priv = (struct octeon_device_priv *)oct->priv; for (q_no = 0; q_no < MAX_OCTEON_OUTPUT_QUEUES(oct); q_no++) { if (!(oct->io_qmask.oq & BIT_ULL(q_no))) continue; reschedule |= octeon_droq_process_packets(oct, oct->droq[q_no], MAX_PACKET_BUDGET); lio_enable_irq(oct->droq[q_no], NULL); if (OCTEON_CN23XX_PF(oct) && oct->msix_on) { /* set time and cnt interrupt thresholds for this DROQ * for NAPI */ int adjusted_q_no = q_no + oct->sriov_info.pf_srn; octeon_write_csr64( oct, CN23XX_SLI_OQ_PKT_INT_LEVELS(adjusted_q_no), 0x5700000040ULL); octeon_write_csr64( oct, CN23XX_SLI_OQ_PKTS_SENT(adjusted_q_no), 0); } } if (reschedule) tasklet_schedule(&oct_priv->droq_tasklet); } static int lio_wait_for_oq_pkts(struct octeon_device *oct) { struct octeon_device_priv *oct_priv = (struct octeon_device_priv *)oct->priv; int retry = 100, pkt_cnt = 0, pending_pkts = 0; int i; do { pending_pkts = 0; for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) { if (!(oct->io_qmask.oq & BIT_ULL(i))) continue; pkt_cnt += octeon_droq_check_hw_for_pkts(oct->droq[i]); } if (pkt_cnt > 0) { pending_pkts += pkt_cnt; tasklet_schedule(&oct_priv->droq_tasklet); } pkt_cnt = 0; schedule_timeout_uninterruptible(1); } while (retry-- && pending_pkts); return pkt_cnt; } /** * \brief Forces all IO queues off on a given device * @param oct Pointer to Octeon device */ static void force_io_queues_off(struct octeon_device *oct) { if ((oct->chip_id == OCTEON_CN66XX) || (oct->chip_id == OCTEON_CN68XX)) { /* Reset the Enable bits for Input Queues. */ octeon_write_csr(oct, CN6XXX_SLI_PKT_INSTR_ENB, 0); /* Reset the Enable bits for Output Queues. */ octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_ENB, 0); } } /** * \brief Cause device to go quiet so it can be safely removed/reset/etc * @param oct Pointer to Octeon device */ static inline void pcierror_quiesce_device(struct octeon_device *oct) { int i; /* Disable the input and output queues now. No more packets will * arrive from Octeon, but we should wait for all packet processing * to finish. */ force_io_queues_off(oct); /* To allow for in-flight requests */ schedule_timeout_uninterruptible(WAIT_INFLIGHT_REQUEST); if (wait_for_pending_requests(oct)) dev_err(&oct->pci_dev->dev, "There were pending requests\n"); /* Force all requests waiting to be fetched by OCTEON to complete. */ for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) { struct octeon_instr_queue *iq; if (!(oct->io_qmask.iq & BIT_ULL(i))) continue; iq = oct->instr_queue[i]; if (atomic_read(&iq->instr_pending)) { spin_lock_bh(&iq->lock); iq->fill_cnt = 0; iq->octeon_read_index = iq->host_write_index; iq->stats.instr_processed += atomic_read(&iq->instr_pending); lio_process_iq_request_list(oct, iq, 0); spin_unlock_bh(&iq->lock); } } /* Force all pending ordered list requests to time out. */ lio_process_ordered_list(oct, 1); /* We do not need to wait for output queue packets to be processed. */ } /** * \brief Cleanup PCI AER uncorrectable error status * @param dev Pointer to PCI device */ static void cleanup_aer_uncorrect_error_status(struct pci_dev *dev) { int pos = 0x100; u32 status, mask; pr_info("%s :\n", __func__); pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status); pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask); if (dev->error_state == pci_channel_io_normal) status &= ~mask; /* Clear corresponding nonfatal bits */ else status &= mask; /* Clear corresponding fatal bits */ pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status); } /** * \brief Stop all PCI IO to a given device * @param dev Pointer to Octeon device */ static void stop_pci_io(struct octeon_device *oct) { /* No more instructions will be forwarded. */ atomic_set(&oct->status, OCT_DEV_IN_RESET); pci_disable_device(oct->pci_dev); /* Disable interrupts */ oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR); pcierror_quiesce_device(oct); /* Release the interrupt line */ free_irq(oct->pci_dev->irq, oct); if (oct->flags & LIO_FLAG_MSI_ENABLED) pci_disable_msi(oct->pci_dev); dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n", lio_get_state_string(&oct->status)); /* making it a common function for all OCTEON models */ cleanup_aer_uncorrect_error_status(oct->pci_dev); } /** * \brief called when PCI error is detected * @param pdev Pointer to PCI device * @param state The current pci connection state * * This function is called after a PCI bus error affecting * this device has been detected. */ static pci_ers_result_t liquidio_pcie_error_detected(struct pci_dev *pdev, pci_channel_state_t state) { struct octeon_device *oct = pci_get_drvdata(pdev); /* Non-correctable Non-fatal errors */ if (state == pci_channel_io_normal) { dev_err(&oct->pci_dev->dev, "Non-correctable non-fatal error reported:\n"); cleanup_aer_uncorrect_error_status(oct->pci_dev); return PCI_ERS_RESULT_CAN_RECOVER; } /* Non-correctable Fatal errors */ dev_err(&oct->pci_dev->dev, "Non-correctable FATAL reported by PCI AER driver\n"); stop_pci_io(oct); /* Always return a DISCONNECT. There is no support for recovery but only * for a clean shutdown. */ return PCI_ERS_RESULT_DISCONNECT; } /** * \brief mmio handler * @param pdev Pointer to PCI device */ static pci_ers_result_t liquidio_pcie_mmio_enabled( struct pci_dev *pdev __attribute__((unused))) { /* We should never hit this since we never ask for a reset for a Fatal * Error. We always return DISCONNECT in io_error above. * But play safe and return RECOVERED for now. */ return PCI_ERS_RESULT_RECOVERED; } /** * \brief called after the pci bus has been reset. * @param pdev Pointer to PCI device * * Restart the card from scratch, as if from a cold-boot. Implementation * resembles the first-half of the octeon_resume routine. */ static pci_ers_result_t liquidio_pcie_slot_reset( struct pci_dev *pdev __attribute__((unused))) { /* We should never hit this since we never ask for a reset for a Fatal * Error. We always return DISCONNECT in io_error above. * But play safe and return RECOVERED for now. */ return PCI_ERS_RESULT_RECOVERED; } /** * \brief called when traffic can start flowing again. * @param pdev Pointer to PCI device * * This callback is called when the error recovery driver tells us that * its OK to resume normal operation. Implementation resembles the * second-half of the octeon_resume routine. */ static void liquidio_pcie_resume(struct pci_dev *pdev __attribute__((unused))) { /* Nothing to be done here. */ } #ifdef CONFIG_PM /** * \brief called when suspending * @param pdev Pointer to PCI device * @param state state to suspend to */ static int liquidio_suspend(struct pci_dev *pdev __attribute__((unused)), pm_message_t state __attribute__((unused))) { return 0; } /** * \brief called when resuming * @param pdev Pointer to PCI device */ static int liquidio_resume(struct pci_dev *pdev __attribute__((unused))) { return 0; } #endif /* For PCI-E Advanced Error Recovery (AER) Interface */ static const struct pci_error_handlers liquidio_err_handler = { .error_detected = liquidio_pcie_error_detected, .mmio_enabled = liquidio_pcie_mmio_enabled, .slot_reset = liquidio_pcie_slot_reset, .resume = liquidio_pcie_resume, }; static const struct pci_device_id liquidio_pci_tbl[] = { { /* 68xx */ PCI_VENDOR_ID_CAVIUM, 0x91, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { /* 66xx */ PCI_VENDOR_ID_CAVIUM, 0x92, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { /* 23xx pf */ PCI_VENDOR_ID_CAVIUM, 0x9702, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(pci, liquidio_pci_tbl); static struct pci_driver liquidio_pci_driver = { .name = "LiquidIO", .id_table = liquidio_pci_tbl, .probe = liquidio_probe, .remove = liquidio_remove, .err_handler = &liquidio_err_handler, /* For AER */ #ifdef CONFIG_PM .suspend = liquidio_suspend, .resume = liquidio_resume, #endif #ifdef CONFIG_PCI_IOV .sriov_configure = liquidio_enable_sriov, #endif }; /** * \brief register PCI driver */ static int liquidio_init_pci(void) { return pci_register_driver(&liquidio_pci_driver); } /** * \brief unregister PCI driver */ static void liquidio_deinit_pci(void) { pci_unregister_driver(&liquidio_pci_driver); } /** * \brief Check Tx queue status, and take appropriate action * @param lio per-network private data * @returns 0 if full, number of queues woken up otherwise */ static inline int check_txq_status(struct lio *lio) { int numqs = lio->netdev->real_num_tx_queues; int ret_val = 0; int q, iq; /* check each sub-queue state */ for (q = 0; q < numqs; q++) { iq = lio->linfo.txpciq[q % lio->oct_dev->num_iqs].s.q_no; if (octnet_iq_is_full(lio->oct_dev, iq)) continue; if (__netif_subqueue_stopped(lio->netdev, q)) { netif_wake_subqueue(lio->netdev, q); INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, iq, tx_restart, 1); ret_val++; } } return ret_val; } /** * \brief Print link information * @param netdev network device */ static void print_link_info(struct net_device *netdev) { struct lio *lio = GET_LIO(netdev); if (!ifstate_check(lio, LIO_IFSTATE_RESETTING) && ifstate_check(lio, LIO_IFSTATE_REGISTERED)) { struct oct_link_info *linfo = &lio->linfo; if (linfo->link.s.link_up) { netif_info(lio, link, lio->netdev, "%d Mbps %s Duplex UP\n", linfo->link.s.speed, (linfo->link.s.duplex) ? "Full" : "Half"); } else { netif_info(lio, link, lio->netdev, "Link Down\n"); } } } /** * \brief Routine to notify MTU change * @param work work_struct data structure */ static void octnet_link_status_change(struct work_struct *work) { struct cavium_wk *wk = (struct cavium_wk *)work; struct lio *lio = (struct lio *)wk->ctxptr; /* lio->linfo.link.s.mtu always contains max MTU of the lio interface. * this API is invoked only when new max-MTU of the interface is * less than current MTU. */ rtnl_lock(); dev_set_mtu(lio->netdev, lio->linfo.link.s.mtu); rtnl_unlock(); } /** * \brief Sets up the mtu status change work * @param netdev network device */ static inline int setup_link_status_change_wq(struct net_device *netdev) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; lio->link_status_wq.wq = alloc_workqueue("link-status", WQ_MEM_RECLAIM, 0); if (!lio->link_status_wq.wq) { dev_err(&oct->pci_dev->dev, "unable to create cavium link status wq\n"); return -1; } INIT_DELAYED_WORK(&lio->link_status_wq.wk.work, octnet_link_status_change); lio->link_status_wq.wk.ctxptr = lio; return 0; } static inline void cleanup_link_status_change_wq(struct net_device *netdev) { struct lio *lio = GET_LIO(netdev); if (lio->link_status_wq.wq) { cancel_delayed_work_sync(&lio->link_status_wq.wk.work); destroy_workqueue(lio->link_status_wq.wq); } } /** * \brief Update link status * @param netdev network device * @param ls link status structure * * Called on receipt of a link status response from the core application to * update each interface's link status. */ static inline void update_link_status(struct net_device *netdev, union oct_link_status *ls) { struct lio *lio = GET_LIO(netdev); int changed = (lio->linfo.link.u64 != ls->u64); int current_max_mtu = lio->linfo.link.s.mtu; struct octeon_device *oct = lio->oct_dev; dev_dbg(&oct->pci_dev->dev, "%s: lio->linfo.link.u64=%llx, ls->u64=%llx\n", __func__, lio->linfo.link.u64, ls->u64); lio->linfo.link.u64 = ls->u64; if ((lio->intf_open) && (changed)) { print_link_info(netdev); lio->link_changes++; if (lio->linfo.link.s.link_up) { dev_dbg(&oct->pci_dev->dev, "%s: link_up", __func__); netif_carrier_on(netdev); wake_txqs(netdev); } else { dev_dbg(&oct->pci_dev->dev, "%s: link_off", __func__); netif_carrier_off(netdev); stop_txqs(netdev); } if (lio->linfo.link.s.mtu != current_max_mtu) { netif_info(lio, probe, lio->netdev, "Max MTU changed from %d to %d\n", current_max_mtu, lio->linfo.link.s.mtu); netdev->max_mtu = lio->linfo.link.s.mtu; } if (lio->linfo.link.s.mtu < netdev->mtu) { dev_warn(&oct->pci_dev->dev, "Current MTU is higher than new max MTU; Reducing the current mtu from %d to %d\n", netdev->mtu, lio->linfo.link.s.mtu); queue_delayed_work(lio->link_status_wq.wq, &lio->link_status_wq.wk.work, 0); } } } /** * lio_sync_octeon_time - send latest localtime to octeon firmware so that * firmware will correct it's time, in case there is a time skew * * @work: work scheduled to send time update to octeon firmware **/ static void lio_sync_octeon_time(struct work_struct *work) { struct cavium_wk *wk = (struct cavium_wk *)work; struct lio *lio = (struct lio *)wk->ctxptr; struct octeon_device *oct = lio->oct_dev; struct octeon_soft_command *sc; struct timespec64 ts; struct lio_time *lt; int ret; sc = octeon_alloc_soft_command(oct, sizeof(struct lio_time), 16, 0); if (!sc) { dev_err(&oct->pci_dev->dev, "Failed to sync time to octeon: soft command allocation failed\n"); return; } lt = (struct lio_time *)sc->virtdptr; /* Get time of the day */ ktime_get_real_ts64(&ts); lt->sec = ts.tv_sec; lt->nsec = ts.tv_nsec; octeon_swap_8B_data((u64 *)lt, (sizeof(struct lio_time)) / 8); sc->iq_no = lio->linfo.txpciq[0].s.q_no; octeon_prepare_soft_command(oct, sc, OPCODE_NIC, OPCODE_NIC_SYNC_OCTEON_TIME, 0, 0, 0); init_completion(&sc->complete); sc->sc_status = OCTEON_REQUEST_PENDING; ret = octeon_send_soft_command(oct, sc); if (ret == IQ_SEND_FAILED) { dev_err(&oct->pci_dev->dev, "Failed to sync time to octeon: failed to send soft command\n"); octeon_free_soft_command(oct, sc); } else { WRITE_ONCE(sc->caller_is_done, true); } queue_delayed_work(lio->sync_octeon_time_wq.wq, &lio->sync_octeon_time_wq.wk.work, msecs_to_jiffies(LIO_SYNC_OCTEON_TIME_INTERVAL_MS)); } /** * setup_sync_octeon_time_wq - Sets up the work to periodically update * local time to octeon firmware * * @netdev - network device which should send time update to firmware **/ static inline int setup_sync_octeon_time_wq(struct net_device *netdev) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; lio->sync_octeon_time_wq.wq = alloc_workqueue("update-octeon-time", WQ_MEM_RECLAIM, 0); if (!lio->sync_octeon_time_wq.wq) { dev_err(&oct->pci_dev->dev, "Unable to create wq to update octeon time\n"); return -1; } INIT_DELAYED_WORK(&lio->sync_octeon_time_wq.wk.work, lio_sync_octeon_time); lio->sync_octeon_time_wq.wk.ctxptr = lio; queue_delayed_work(lio->sync_octeon_time_wq.wq, &lio->sync_octeon_time_wq.wk.work, msecs_to_jiffies(LIO_SYNC_OCTEON_TIME_INTERVAL_MS)); return 0; } /** * cleanup_sync_octeon_time_wq - stop scheduling and destroy the work created * to periodically update local time to octeon firmware * * @netdev - network device which should send time update to firmware **/ static inline void cleanup_sync_octeon_time_wq(struct net_device *netdev) { struct lio *lio = GET_LIO(netdev); struct cavium_wq *time_wq = &lio->sync_octeon_time_wq; if (time_wq->wq) { cancel_delayed_work_sync(&time_wq->wk.work); destroy_workqueue(time_wq->wq); } } static struct octeon_device *get_other_octeon_device(struct octeon_device *oct) { struct octeon_device *other_oct; other_oct = lio_get_device(oct->octeon_id + 1); if (other_oct && other_oct->pci_dev) { int oct_busnum, other_oct_busnum; oct_busnum = oct->pci_dev->bus->number; other_oct_busnum = other_oct->pci_dev->bus->number; if (oct_busnum == other_oct_busnum) { int oct_slot, other_oct_slot; oct_slot = PCI_SLOT(oct->pci_dev->devfn); other_oct_slot = PCI_SLOT(other_oct->pci_dev->devfn); if (oct_slot == other_oct_slot) return other_oct; } } return NULL; } static void disable_all_vf_links(struct octeon_device *oct) { struct net_device *netdev; int max_vfs, vf, i; if (!oct) return; max_vfs = oct->sriov_info.max_vfs; for (i = 0; i < oct->ifcount; i++) { netdev = oct->props[i].netdev; if (!netdev) continue; for (vf = 0; vf < max_vfs; vf++) liquidio_set_vf_link_state(netdev, vf, IFLA_VF_LINK_STATE_DISABLE); } } static int liquidio_watchdog(void *param) { bool err_msg_was_printed[LIO_MAX_CORES]; u16 mask_of_crashed_or_stuck_cores = 0; bool all_vf_links_are_disabled = false; struct octeon_device *oct = param; struct octeon_device *other_oct; #ifdef CONFIG_MODULE_UNLOAD long refcount, vfs_referencing_pf; u64 vfs_mask1, vfs_mask2; #endif int core; memset(err_msg_was_printed, 0, sizeof(err_msg_was_printed)); while (!kthread_should_stop()) { /* sleep for a couple of seconds so that we don't hog the CPU */ set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(msecs_to_jiffies(2000)); mask_of_crashed_or_stuck_cores = (u16)octeon_read_csr64(oct, CN23XX_SLI_SCRATCH2); if (!mask_of_crashed_or_stuck_cores) continue; WRITE_ONCE(oct->cores_crashed, true); other_oct = get_other_octeon_device(oct); if (other_oct) WRITE_ONCE(other_oct->cores_crashed, true); for (core = 0; core < LIO_MAX_CORES; core++) { bool core_crashed_or_got_stuck; core_crashed_or_got_stuck = (mask_of_crashed_or_stuck_cores >> core) & 1; if (core_crashed_or_got_stuck && !err_msg_was_printed[core]) { dev_err(&oct->pci_dev->dev, "ERROR: Octeon core %d crashed or got stuck! See oct-fwdump for details.\n", core); err_msg_was_printed[core] = true; } } if (all_vf_links_are_disabled) continue; disable_all_vf_links(oct); disable_all_vf_links(other_oct); all_vf_links_are_disabled = true; #ifdef CONFIG_MODULE_UNLOAD vfs_mask1 = READ_ONCE(oct->sriov_info.vf_drv_loaded_mask); vfs_mask2 = READ_ONCE(other_oct->sriov_info.vf_drv_loaded_mask); vfs_referencing_pf = hweight64(vfs_mask1); vfs_referencing_pf += hweight64(vfs_mask2); refcount = module_refcount(THIS_MODULE); if (refcount >= vfs_referencing_pf) { while (vfs_referencing_pf) { module_put(THIS_MODULE); vfs_referencing_pf--; } } #endif } return 0; } /** * \brief PCI probe handler * @param pdev PCI device structure * @param ent unused */ static int liquidio_probe(struct pci_dev *pdev, const struct pci_device_id *ent __attribute__((unused))) { struct octeon_device *oct_dev = NULL; struct handshake *hs; oct_dev = octeon_allocate_device(pdev->device, sizeof(struct octeon_device_priv)); if (!oct_dev) { dev_err(&pdev->dev, "Unable to allocate device\n"); return -ENOMEM; } if (pdev->device == OCTEON_CN23XX_PF_VID) oct_dev->msix_on = LIO_FLAG_MSIX_ENABLED; /* Enable PTP for 6XXX Device */ if (((pdev->device == OCTEON_CN66XX) || (pdev->device == OCTEON_CN68XX))) oct_dev->ptp_enable = true; else oct_dev->ptp_enable = false; dev_info(&pdev->dev, "Initializing device %x:%x.\n", (u32)pdev->vendor, (u32)pdev->device); /* Assign octeon_device for this device to the private data area. */ pci_set_drvdata(pdev, oct_dev); /* set linux specific device pointer */ oct_dev->pci_dev = (void *)pdev; oct_dev->subsystem_id = pdev->subsystem_vendor | (pdev->subsystem_device << 16); hs = &handshake[oct_dev->octeon_id]; init_completion(&hs->init); init_completion(&hs->started); hs->pci_dev = pdev; if (oct_dev->octeon_id == 0) /* first LiquidIO NIC is detected */ complete(&first_stage); if (octeon_device_init(oct_dev)) { complete(&hs->init); liquidio_remove(pdev); return -ENOMEM; } if (OCTEON_CN23XX_PF(oct_dev)) { u8 bus, device, function; if (atomic_read(oct_dev->adapter_refcount) == 1) { /* Each NIC gets one watchdog kernel thread. The first * PF (of each NIC) that gets pci_driver->probe()'d * creates that thread. */ bus = pdev->bus->number; device = PCI_SLOT(pdev->devfn); function = PCI_FUNC(pdev->devfn); oct_dev->watchdog_task = kthread_create( liquidio_watchdog, oct_dev, "liowd/%02hhx:%02hhx.%hhx", bus, device, function); if (!IS_ERR(oct_dev->watchdog_task)) { wake_up_process(oct_dev->watchdog_task); } else { oct_dev->watchdog_task = NULL; dev_err(&oct_dev->pci_dev->dev, "failed to create kernel_thread\n"); liquidio_remove(pdev); return -1; } } } oct_dev->rx_pause = 1; oct_dev->tx_pause = 1; dev_dbg(&oct_dev->pci_dev->dev, "Device is ready\n"); return 0; } static bool fw_type_is_auto(void) { return strncmp(fw_type, LIO_FW_NAME_TYPE_AUTO, sizeof(LIO_FW_NAME_TYPE_AUTO)) == 0; } /** * \brief PCI FLR for each Octeon device. * @param oct octeon device */ static void octeon_pci_flr(struct octeon_device *oct) { int rc; pci_save_state(oct->pci_dev); pci_cfg_access_lock(oct->pci_dev); /* Quiesce the device completely */ pci_write_config_word(oct->pci_dev, PCI_COMMAND, PCI_COMMAND_INTX_DISABLE); rc = __pci_reset_function_locked(oct->pci_dev); if (rc != 0) dev_err(&oct->pci_dev->dev, "Error %d resetting PCI function %d\n", rc, oct->pf_num); pci_cfg_access_unlock(oct->pci_dev); pci_restore_state(oct->pci_dev); } /** *\brief Destroy resources associated with octeon device * @param pdev PCI device structure * @param ent unused */ static void octeon_destroy_resources(struct octeon_device *oct) { int i, refcount; struct msix_entry *msix_entries; struct octeon_device_priv *oct_priv = (struct octeon_device_priv *)oct->priv; struct handshake *hs; switch (atomic_read(&oct->status)) { case OCT_DEV_RUNNING: case OCT_DEV_CORE_OK: /* No more instructions will be forwarded. */ atomic_set(&oct->status, OCT_DEV_IN_RESET); oct->app_mode = CVM_DRV_INVALID_APP; dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n", lio_get_state_string(&oct->status)); schedule_timeout_uninterruptible(HZ / 10); /* fallthrough */ case OCT_DEV_HOST_OK: /* fallthrough */ case OCT_DEV_CONSOLE_INIT_DONE: /* Remove any consoles */ octeon_remove_consoles(oct); /* fallthrough */ case OCT_DEV_IO_QUEUES_DONE: if (lio_wait_for_instr_fetch(oct)) dev_err(&oct->pci_dev->dev, "IQ had pending instructions\n"); if (wait_for_pending_requests(oct)) dev_err(&oct->pci_dev->dev, "There were pending requests\n"); /* Disable the input and output queues now. No more packets will * arrive from Octeon, but we should wait for all packet * processing to finish. */ oct->fn_list.disable_io_queues(oct); if (lio_wait_for_oq_pkts(oct)) dev_err(&oct->pci_dev->dev, "OQ had pending packets\n"); /* Force all requests waiting to be fetched by OCTEON to * complete. */ for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) { struct octeon_instr_queue *iq; if (!(oct->io_qmask.iq & BIT_ULL(i))) continue; iq = oct->instr_queue[i]; if (atomic_read(&iq->instr_pending)) { spin_lock_bh(&iq->lock); iq->fill_cnt = 0; iq->octeon_read_index = iq->host_write_index; iq->stats.instr_processed += atomic_read(&iq->instr_pending); lio_process_iq_request_list(oct, iq, 0); spin_unlock_bh(&iq->lock); } } lio_process_ordered_list(oct, 1); octeon_free_sc_done_list(oct); octeon_free_sc_zombie_list(oct); /* fallthrough */ case OCT_DEV_INTR_SET_DONE: /* Disable interrupts */ oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR); if (oct->msix_on) { msix_entries = (struct msix_entry *)oct->msix_entries; for (i = 0; i < oct->num_msix_irqs - 1; i++) { if (oct->ioq_vector[i].vector) { /* clear the affinity_cpumask */ irq_set_affinity_hint( msix_entries[i].vector, NULL); free_irq(msix_entries[i].vector, &oct->ioq_vector[i]); oct->ioq_vector[i].vector = 0; } } /* non-iov vector's argument is oct struct */ free_irq(msix_entries[i].vector, oct); pci_disable_msix(oct->pci_dev); kfree(oct->msix_entries); oct->msix_entries = NULL; } else { /* Release the interrupt line */ free_irq(oct->pci_dev->irq, oct); if (oct->flags & LIO_FLAG_MSI_ENABLED) pci_disable_msi(oct->pci_dev); } kfree(oct->irq_name_storage); oct->irq_name_storage = NULL; /* fallthrough */ case OCT_DEV_MSIX_ALLOC_VECTOR_DONE: if (OCTEON_CN23XX_PF(oct)) octeon_free_ioq_vector(oct); /* fallthrough */ case OCT_DEV_MBOX_SETUP_DONE: if (OCTEON_CN23XX_PF(oct)) oct->fn_list.free_mbox(oct); /* fallthrough */ case OCT_DEV_IN_RESET: case OCT_DEV_DROQ_INIT_DONE: /* Wait for any pending operations */ 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); } /* Force any pending handshakes to complete */ for (i = 0; i < MAX_OCTEON_DEVICES; i++) { hs = &handshake[i]; if (hs->pci_dev) { handshake[oct->octeon_id].init_ok = 0; complete(&handshake[oct->octeon_id].init); handshake[oct->octeon_id].started_ok = 0; complete(&handshake[oct->octeon_id].started); } } /* 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); } #ifdef CONFIG_PCI_IOV if (oct->sriov_info.sriov_enabled) pci_disable_sriov(oct->pci_dev); #endif /* 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: refcount = octeon_deregister_device(oct); /* Soft reset the octeon device before exiting. * However, if fw was loaded from card (i.e. autoboot), * perform an FLR instead. * Implementation note: only soft-reset the device * if it is a CN6XXX OR the LAST CN23XX device. */ if (atomic_read(oct->adapter_fw_state) == FW_IS_PRELOADED) octeon_pci_flr(oct); else if (OCTEON_CN6XXX(oct) || !refcount) oct->fn_list.soft_reset(oct); 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; } /* end switch (oct->status) */ tasklet_kill(&oct_priv->droq_tasklet); } /** * \brief Send Rx control command * @param lio per-network private data * @param start_stop whether to start or stop */ static void send_rx_ctrl_cmd(struct lio *lio, int start_stop) { struct octeon_soft_command *sc; union octnet_cmd *ncmd; struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; int retval; if (oct->props[lio->ifidx].rx_on == start_stop) return; 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\n"); return; } 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); return; } 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; oct->props[lio->ifidx].rx_on = start_stop; WRITE_ONCE(sc->caller_is_done, true); } } /** * \brief Destroy NIC device interface * @param oct octeon device * @param 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; if (OCTEON_CN23XX_PF(oct)) 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_sync_octeon_time_wq(netdev); cleanup_link_status_change_wq(netdev); cleanup_rx_oom_poll_fn(netdev); lio_delete_glists(lio); free_netdev(netdev); oct->props[ifidx].gmxport = -1; oct->props[ifidx].netdev = NULL; } /** * \brief Stop complete NIC functionality * @param oct octeon device */ static int liquidio_stop_nic_module(struct octeon_device *oct) { int i, j; struct lio *lio; 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); lio_vf_rep_destroy(oct); 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); if (oct->devlink) { devlink_unregister(oct->devlink); devlink_free(oct->devlink); oct->devlink = NULL; } dev_dbg(&oct->pci_dev->dev, "Network interfaces stopped\n"); return 0; } /** * \brief Cleans up resources at unload time * @param pdev PCI device structure */ static void liquidio_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->watchdog_task) kthread_stop(oct_dev->watchdog_task); if (!oct_dev->octeon_id && oct_dev->fw_info.app_cap_flags & LIQUIDIO_SWITCHDEV_CAP) lio_vf_rep_modexit(); if (oct_dev->app_mode && (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); } /** * \brief Identify the Octeon device and to map the BAR address space * @param oct octeon device */ static int octeon_chip_specific_setup(struct octeon_device *oct) { u32 dev_id, rev_id; int ret = 1; pci_read_config_dword(oct->pci_dev, 0, &dev_id); pci_read_config_dword(oct->pci_dev, 8, &rev_id); oct->rev_id = rev_id & 0xff; switch (dev_id) { case OCTEON_CN68XX_PCIID: oct->chip_id = OCTEON_CN68XX; ret = lio_setup_cn68xx_octeon_device(oct); break; case OCTEON_CN66XX_PCIID: oct->chip_id = OCTEON_CN66XX; ret = lio_setup_cn66xx_octeon_device(oct); break; case OCTEON_CN23XX_PCIID_PF: oct->chip_id = OCTEON_CN23XX_PF_VID; ret = setup_cn23xx_octeon_pf_device(oct); if (ret) break; #ifdef CONFIG_PCI_IOV if (!ret) pci_sriov_set_totalvfs(oct->pci_dev, oct->sriov_info.max_vfs); #endif break; default: dev_err(&oct->pci_dev->dev, "Unknown device found (dev_id: %x)\n", dev_id); } return ret; } /** * \brief PCI initialization for each Octeon device. * @param oct octeon device */ static int octeon_pci_os_setup(struct octeon_device *oct) { /* setup PCI stuff first */ 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; } /** * \brief Unmap and free network buffer * @param buf buffer */ static void free_netbuf(void *buf) { struct sk_buff *skb; struct octnet_buf_free_info *finfo; 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); } /** * \brief Unmap and free gather buffer * @param buf buffer */ static void free_netsgbuf(void *buf) { struct octnet_buf_free_info *finfo; struct sk_buff *skb; struct lio *lio; struct octnic_gather *g; int i, frags, iq; finfo = (struct octnet_buf_free_info *)buf; skb = finfo->skb; lio = finfo->lio; g = finfo->g; frags = skb_shinfo(skb)->nr_frags; dma_unmap_single(&lio->oct_dev->pci_dev->dev, g->sg[0].ptr[0], (skb->len - skb->data_len), DMA_TO_DEVICE); i = 1; while (frags--) { skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1]; pci_unmap_page((lio->oct_dev)->pci_dev, g->sg[(i >> 2)].ptr[(i & 3)], skb_frag_size(frag), DMA_TO_DEVICE); i++; } iq = skb_iq(lio->oct_dev, skb); spin_lock(&lio->glist_lock[iq]); list_add_tail(&g->list, &lio->glist[iq]); spin_unlock(&lio->glist_lock[iq]); tx_buffer_free(skb); } /** * \brief Unmap and free gather buffer with response * @param buf buffer */ static void free_netsgbuf_with_resp(void *buf) { struct octeon_soft_command *sc; struct octnet_buf_free_info *finfo; struct sk_buff *skb; struct lio *lio; struct octnic_gather *g; int i, frags, iq; sc = (struct octeon_soft_command *)buf; skb = (struct sk_buff *)sc->callback_arg; finfo = (struct octnet_buf_free_info *)&skb->cb; lio = finfo->lio; g = finfo->g; frags = skb_shinfo(skb)->nr_frags; dma_unmap_single(&lio->oct_dev->pci_dev->dev, g->sg[0].ptr[0], (skb->len - skb->data_len), DMA_TO_DEVICE); i = 1; while (frags--) { skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1]; pci_unmap_page((lio->oct_dev)->pci_dev, g->sg[(i >> 2)].ptr[(i & 3)], skb_frag_size(frag), DMA_TO_DEVICE); i++; } iq = skb_iq(lio->oct_dev, skb); spin_lock(&lio->glist_lock[iq]); list_add_tail(&g->list, &lio->glist[iq]); spin_unlock(&lio->glist_lock[iq]); /* Don't free the skb yet */ } /** * \brief Adjust ptp frequency * @param ptp PTP clock info * @param ppb how much to adjust by, in parts-per-billion */ static int liquidio_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb) { struct lio *lio = container_of(ptp, struct lio, ptp_info); struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; u64 comp, delta; unsigned long flags; bool neg_adj = false; if (ppb < 0) { neg_adj = true; ppb = -ppb; } /* The hardware adds the clock compensation value to the * PTP clock on every coprocessor clock cycle, so we * compute the delta in terms of coprocessor clocks. */ delta = (u64)ppb << 32; do_div(delta, oct->coproc_clock_rate); spin_lock_irqsave(&lio->ptp_lock, flags); comp = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_COMP); if (neg_adj) comp -= delta; else comp += delta; lio_pci_writeq(oct, comp, CN6XXX_MIO_PTP_CLOCK_COMP); spin_unlock_irqrestore(&lio->ptp_lock, flags); return 0; } /** * \brief Adjust ptp time * @param ptp PTP clock info * @param delta how much to adjust by, in nanosecs */ static int liquidio_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) { unsigned long flags; struct lio *lio = container_of(ptp, struct lio, ptp_info); spin_lock_irqsave(&lio->ptp_lock, flags); lio->ptp_adjust += delta; spin_unlock_irqrestore(&lio->ptp_lock, flags); return 0; } /** * \brief Get hardware clock time, including any adjustment * @param ptp PTP clock info * @param ts timespec */ static int liquidio_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) { u64 ns; unsigned long flags; struct lio *lio = container_of(ptp, struct lio, ptp_info); struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; spin_lock_irqsave(&lio->ptp_lock, flags); ns = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_HI); ns += lio->ptp_adjust; spin_unlock_irqrestore(&lio->ptp_lock, flags); *ts = ns_to_timespec64(ns); return 0; } /** * \brief Set hardware clock time. Reset adjustment * @param ptp PTP clock info * @param ts timespec */ static int liquidio_ptp_settime(struct ptp_clock_info *ptp, const struct timespec64 *ts) { u64 ns; unsigned long flags; struct lio *lio = container_of(ptp, struct lio, ptp_info); struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; ns = timespec64_to_ns(ts); spin_lock_irqsave(&lio->ptp_lock, flags); lio_pci_writeq(oct, ns, CN6XXX_MIO_PTP_CLOCK_HI); lio->ptp_adjust = 0; spin_unlock_irqrestore(&lio->ptp_lock, flags); return 0; } /** * \brief Check if PTP is enabled * @param ptp PTP clock info * @param rq request * @param on is it on */ static int liquidio_ptp_enable(struct ptp_clock_info *ptp __attribute__((unused)), struct ptp_clock_request *rq __attribute__((unused)), int on __attribute__((unused))) { return -EOPNOTSUPP; } /** * \brief Open PTP clock source * @param netdev network device */ static void oct_ptp_open(struct net_device *netdev) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; spin_lock_init(&lio->ptp_lock); snprintf(lio->ptp_info.name, 16, "%s", netdev->name); lio->ptp_info.owner = THIS_MODULE; lio->ptp_info.max_adj = 250000000; lio->ptp_info.n_alarm = 0; lio->ptp_info.n_ext_ts = 0; lio->ptp_info.n_per_out = 0; lio->ptp_info.pps = 0; lio->ptp_info.adjfreq = liquidio_ptp_adjfreq; lio->ptp_info.adjtime = liquidio_ptp_adjtime; lio->ptp_info.gettime64 = liquidio_ptp_gettime; lio->ptp_info.settime64 = liquidio_ptp_settime; lio->ptp_info.enable = liquidio_ptp_enable; lio->ptp_adjust = 0; lio->ptp_clock = ptp_clock_register(&lio->ptp_info, &oct->pci_dev->dev); if (IS_ERR(lio->ptp_clock)) lio->ptp_clock = NULL; } /** * \brief Init PTP clock * @param oct octeon device */ static void liquidio_ptp_init(struct octeon_device *oct) { u64 clock_comp, cfg; clock_comp = (u64)NSEC_PER_SEC << 32; do_div(clock_comp, oct->coproc_clock_rate); lio_pci_writeq(oct, clock_comp, CN6XXX_MIO_PTP_CLOCK_COMP); /* Enable */ cfg = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_CFG); lio_pci_writeq(oct, cfg | 0x01, CN6XXX_MIO_PTP_CLOCK_CFG); } /** * \brief Load firmware to device * @param oct octeon device * * Maps device to firmware filename, requests firmware, and downloads it */ static int load_firmware(struct octeon_device *oct) { int ret = 0; const struct firmware *fw; char fw_name[LIO_MAX_FW_FILENAME_LEN]; char *tmp_fw_type; if (fw_type_is_auto()) { tmp_fw_type = LIO_FW_NAME_TYPE_NIC; strncpy(fw_type, tmp_fw_type, sizeof(fw_type)); } else { tmp_fw_type = fw_type; } sprintf(fw_name, "%s%s%s_%s%s", LIO_FW_DIR, LIO_FW_BASE_NAME, octeon_get_conf(oct)->card_name, tmp_fw_type, LIO_FW_NAME_SUFFIX); ret = request_firmware(&fw, fw_name, &oct->pci_dev->dev); if (ret) { dev_err(&oct->pci_dev->dev, "Request firmware failed. Could not find file %s.\n", fw_name); release_firmware(fw); return ret; } ret = octeon_download_firmware(oct, fw->data, fw->size); release_firmware(fw); return ret; } /** * \brief Poll routine for checking transmit queue status * @param work work_struct data structure */ static void octnet_poll_check_txq_status(struct work_struct *work) { struct cavium_wk *wk = (struct cavium_wk *)work; struct lio *lio = (struct lio *)wk->ctxptr; if (!ifstate_check(lio, LIO_IFSTATE_RUNNING)) return; check_txq_status(lio); queue_delayed_work(lio->txq_status_wq.wq, &lio->txq_status_wq.wk.work, msecs_to_jiffies(1)); } /** * \brief Sets up the txq poll check * @param netdev network device */ static inline int setup_tx_poll_fn(struct net_device *netdev) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; lio->txq_status_wq.wq = alloc_workqueue("txq-status", WQ_MEM_RECLAIM, 0); if (!lio->txq_status_wq.wq) { dev_err(&oct->pci_dev->dev, "unable to create cavium txq status wq\n"); return -1; } INIT_DELAYED_WORK(&lio->txq_status_wq.wk.work, octnet_poll_check_txq_status); lio->txq_status_wq.wk.ctxptr = lio; queue_delayed_work(lio->txq_status_wq.wq, &lio->txq_status_wq.wk.work, msecs_to_jiffies(1)); return 0; } static inline void cleanup_tx_poll_fn(struct net_device *netdev) { struct lio *lio = GET_LIO(netdev); if (lio->txq_status_wq.wq) { cancel_delayed_work_sync(&lio->txq_status_wq.wk.work); destroy_workqueue(lio->txq_status_wq.wq); } } /** * \brief Net device open for LiquidIO * @param 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; if (oct->props[lio->ifidx].napi_enabled == 0) { 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; if (OCTEON_CN23XX_PF(oct)) oct->droq[0]->ops.poll_mode = 1; } if (oct->ptp_enable) oct_ptp_open(netdev); ifstate_set(lio, LIO_IFSTATE_RUNNING); if (OCTEON_CN23XX_PF(oct)) { if (!oct->msix_on) if (setup_tx_poll_fn(netdev)) return -1; } else { if (setup_tx_poll_fn(netdev)) return -1; } netif_tx_start_all_queues(netdev); /* Ready for link status updates */ lio->intf_open = 1; netif_info(lio, ifup, lio->netdev, "Interface Open, ready for traffic\n"); /* tell Octeon to start forwarding packets to host */ send_rx_ctrl_cmd(lio, 1); /* start periodical statistics fetch */ 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)); dev_info(&oct->pci_dev->dev, "%s interface is opened\n", netdev->name); return 0; } /** * \brief Net device stop for LiquidIO * @param 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; ifstate_reset(lio, LIO_IFSTATE_RUNNING); /* Stop any link updates */ lio->intf_open = 0; stop_txqs(netdev); /* Inform that netif carrier is down */ netif_carrier_off(netdev); netif_tx_disable(netdev); lio->linfo.link.s.link_up = 0; lio->link_changes++; /* Tell Octeon that nic interface is down. */ send_rx_ctrl_cmd(lio, 0); if (OCTEON_CN23XX_PF(oct)) { if (!oct->msix_on) cleanup_tx_poll_fn(netdev); } else { cleanup_tx_poll_fn(netdev); } cancel_delayed_work_sync(&lio->stats_wk.work); if (lio->ptp_clock) { ptp_clock_unregister(lio->ptp_clock); lio->ptp_clock = NULL; } /* 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; if (OCTEON_CN23XX_PF(oct)) oct->droq[0]->ops.poll_mode = 0; tasklet_enable(&oct_priv->droq_tasklet); } dev_info(&oct->pci_dev->dev, "%s interface is stopped\n", netdev->name); return 0; } /** * \brief Converts a mask based on net device flags * @param netdev network device * * This routine generates a octnet_ifflags mask from the net device flags * received from the OS. */ static inline 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; } /** * \brief Net device set_multicast_list * @param netdev network device */ static void liquidio_set_mcast_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 *mc; int ret; int mc_count = min(netdev_mc_count(netdev), MAX_OCTEON_MULTICAST_ADDR); 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.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 */ mc = &nctrl.udd[0]; netdev_for_each_mc_addr(ha, netdev) { *mc = 0; memcpy(((u8 *)mc) + 2, ha->addr, ETH_ALEN); /* no need to swap bytes */ if (++mc > &nctrl.udd[mc_count]) break; } /* 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); } } /** * \brief Net device set_mac_address * @param netdev network device */ static int liquidio_set_mac(struct net_device *netdev, void *p) { int ret = 0; struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; struct sockaddr *addr = (struct sockaddr *)p; struct octnic_ctrl_pkt nctrl; if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL; 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. */ memcpy((u8 *)&nctrl.udd[0] + 2, addr->sa_data, ETH_ALEN); 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) { dev_err(&oct->pci_dev->dev, "%s: MAC Address change failed. sc return=%x\n", __func__, nctrl.sc_status); return -EIO; } memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); memcpy(((u8 *)&lio->linfo.hw_addr) + 2, addr->sa_data, ETH_ALEN); 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; lstats->collisions = oct->link_stats.fromhost.total_collisions; /* 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; /* recv'r fifo overrun */ lstats->rx_fifo_errors = oct->link_stats.fromwire.fifo_err; lstats->rx_errors = lstats->rx_length_errors + lstats->rx_crc_errors + lstats->rx_frame_errors + lstats->rx_fifo_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_fifo_errors = oct->link_stats.fromhost.fifo_err; lstats->tx_errors = lstats->tx_aborted_errors + lstats->tx_carrier_errors + lstats->tx_fifo_errors; } /** * \brief Handler for SIOCSHWTSTAMP ioctl * @param netdev network device * @param ifr interface request * @param cmd command */ static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr) { struct hwtstamp_config conf; struct lio *lio = GET_LIO(netdev); 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; } /** * \brief ioctl handler * @param netdev network device * @param ifr interface request * @param cmd command */ static int liquidio_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) { struct lio *lio = GET_LIO(netdev); switch (cmd) { case SIOCSHWTSTAMP: if (lio->oct_dev->ptp_enable) return hwtstamp_ioctl(netdev, ifr); /* fall through */ default: return -EOPNOTSUPP; } } /** * \brief handle a Tx timestamp response * @param status response status * @param buf pointer to skb */ static void handle_timestamp(struct octeon_device *oct, u32 status, void *buf) { struct octnet_buf_free_info *finfo; struct octeon_soft_command *sc; struct oct_timestamp_resp *resp; struct lio *lio; struct sk_buff *skb = (struct sk_buff *)buf; 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) != 0)) { 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); } /* \brief Send a data packet that will be timestamped * @param oct octeon device * @param ndata pointer to network data * @param finfo pointer to private network data */ static inline int send_nic_timestamp_pkt(struct octeon_device *oct, struct octnic_data_pkt *ndata, struct octnet_buf_free_info *finfo, int xmit_more) { int retval; struct octeon_soft_command *sc; struct lio *lio; int ring_doorbell; 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; if (OCTEON_CN23XX_PF(oct)) len = (u32)((struct octeon_instr_ih3 *) (&sc->cmd.cmd3.ih3))->dlengsz; else len = (u32)((struct octeon_instr_ih2 *) (&sc->cmd.cmd2.ih2))->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; } /** \brief Transmit networks packets to the Octeon interface * @param skbuff skbuff struct to be passed to network layer. * @param 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 lio *lio; struct octnet_buf_free_info *finfo; union octnic_cmd_setup cmdsetup; struct octnic_data_pkt ndata; struct octeon_device *oct; struct oct_iq_stats *stats; struct octeon_instr_irh *irh; union tx_info *tx_info; int status = 0; int q_idx = 0, iq_no = 0; int j, xmit_more = 0; u64 dptr = 0; u32 tag = 0; lio = GET_LIO(netdev); oct = lio->oct_dev; q_idx = skb_iq(oct, 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 = (void *)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; } /* pr_info(" XMIT - valid Qs: %d, 1st Q no: %d, cpu: %d, q_no:%d\n", * lio->linfo.num_txpciq, lio->txq, cpu, ndata.q_no); */ 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 == 0) { 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__); stats->tx_dmamap_fail++; return NETDEV_TX_BUSY; } if (OCTEON_CN23XX_PF(oct)) ndata.cmd.cmd3.dptr = dptr; else ndata.cmd.cmd2.dptr = dptr; finfo->dptr = dptr; ndata.reqtype = REQTYPE_NORESP_NET; } else { int i, frags; skb_frag_t *frag; struct octnic_gather *g; 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__); stats->tx_dmamap_fail++; 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; if (OCTEON_CN23XX_PF(oct)) ndata.cmd.cmd3.dptr = dptr; else ndata.cmd.cmd2.dptr = dptr; finfo->dptr = dptr; finfo->g = g; ndata.reqtype = REQTYPE_NORESP_NET_SG; } if (OCTEON_CN23XX_PF(oct)) { irh = (struct octeon_instr_irh *)&ndata.cmd.cmd3.irh; tx_info = (union tx_info *)&ndata.cmd.cmd3.ossp[0]; } else { irh = (struct octeon_instr_irh *)&ndata.cmd.cmd2.irh; tx_info = (union tx_info *)&ndata.cmd.cmd2.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; stats->tx_gso++; } /* HW insert VLAN tag */ if (skb_vlan_tag_present(skb)) { irh->priority = skb_vlan_tag_get(skb) >> 13; irh->vlan = skb_vlan_tag_get(skb) & 0xfff; } 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) 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; } /** \brief Network device Tx timeout * @param netdev pointer to network device */ 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); if (ret > 0) ret = -EIO; } return ret; } 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, "VxLAN port add/delete failed in core (ret:0x%x)\n", ret); if (ret > 0) ret = -EIO; } return ret; } /** \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; if ((request & NETIF_F_HW_VLAN_CTAG_FILTER) && !(lio->dev_capability & NETIF_F_HW_VLAN_CTAG_FILTER)) request &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 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 ((features & NETIF_F_LRO) && (lio->dev_capability & NETIF_F_LRO) && !(netdev->features & 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) && (netdev->features & NETIF_F_LRO)) liquidio_set_feature(netdev, OCTNET_CMD_LRO_DISABLE, OCTNIC_LROIPV4 | OCTNIC_LROIPV6); /* Sending command to firmware to enable/disable RX checksum * offload settings using ethtool */ 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); if ((features & NETIF_F_HW_VLAN_CTAG_FILTER) && (lio->dev_capability & NETIF_F_HW_VLAN_CTAG_FILTER) && !(netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) liquidio_set_feature(netdev, OCTNET_CMD_VLAN_FILTER_CTL, OCTNET_CMD_VLAN_FILTER_ENABLE); else if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER) && (lio->dev_capability & NETIF_F_HW_VLAN_CTAG_FILTER) && (netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) liquidio_set_feature(netdev, OCTNET_CMD_VLAN_FILTER_CTL, OCTNET_CMD_VLAN_FILTER_DISABLE); return 0; } static void liquidio_add_vxlan_port(struct net_device *netdev, struct udp_tunnel_info *ti) { if (ti->type != UDP_TUNNEL_TYPE_VXLAN) return; liquidio_vxlan_port_command(netdev, OCTNET_CMD_VXLAN_PORT_CONFIG, htons(ti->port), OCTNET_CMD_VXLAN_PORT_ADD); } static void liquidio_del_vxlan_port(struct net_device *netdev, struct udp_tunnel_info *ti) { if (ti->type != UDP_TUNNEL_TYPE_VXLAN) return; liquidio_vxlan_port_command(netdev, OCTNET_CMD_VXLAN_PORT_CONFIG, htons(ti->port), OCTNET_CMD_VXLAN_PORT_DEL); } static int __liquidio_set_vf_mac(struct net_device *netdev, int vfidx, u8 *mac, bool is_admin_assigned) { 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(mac)) return -EINVAL; if (vfidx < 0 || vfidx >= oct->sriov_info.max_vfs) return -EINVAL; memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); nctrl.ncmd.u64 = 0; nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR; /* vfidx is 0 based, but vf_num (param1) is 1 based */ nctrl.ncmd.s.param1 = vfidx + 1; nctrl.ncmd.s.more = 1; nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; nctrl.netpndev = (u64)netdev; if (is_admin_assigned) { nctrl.ncmd.s.param2 = true; nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; } nctrl.udd[0] = 0; /* The MAC Address is presented in network byte order. */ ether_addr_copy((u8 *)&nctrl.udd[0] + 2, mac); oct->sriov_info.vf_macaddr[vfidx] = nctrl.udd[0]; ret = octnet_send_nic_ctrl_pkt(oct, &nctrl); if (ret > 0) ret = -EIO; return ret; } static int liquidio_set_vf_mac(struct net_device *netdev, int vfidx, u8 *mac) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; int retval; if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) return -EINVAL; retval = __liquidio_set_vf_mac(netdev, vfidx, mac, true); if (!retval) cn23xx_tell_vf_its_macaddr_changed(oct, vfidx, mac); return retval; } static int liquidio_set_vf_spoofchk(struct net_device *netdev, int vfidx, bool enable) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; struct octnic_ctrl_pkt nctrl; int retval; if (!(oct->fw_info.app_cap_flags & LIQUIDIO_SPOOFCHK_CAP)) { netif_info(lio, drv, lio->netdev, "firmware does not support spoofchk\n"); return -EOPNOTSUPP; } if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) { netif_info(lio, drv, lio->netdev, "Invalid vfidx %d\n", vfidx); return -EINVAL; } if (enable) { if (oct->sriov_info.vf_spoofchk[vfidx]) return 0; } else { /* Clear */ if (!oct->sriov_info.vf_spoofchk[vfidx]) return 0; } memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); nctrl.ncmd.s.cmdgroup = OCTNET_CMD_GROUP1; nctrl.ncmd.s.cmd = OCTNET_CMD_SET_VF_SPOOFCHK; nctrl.ncmd.s.param1 = vfidx + 1; /* vfidx is 0 based, * but vf_num (param1) is 1 based */ nctrl.ncmd.s.param2 = enable; nctrl.ncmd.s.more = 0; nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; nctrl.cb_fn = NULL; retval = octnet_send_nic_ctrl_pkt(oct, &nctrl); if (retval) { netif_info(lio, drv, lio->netdev, "Failed to set VF %d spoofchk %s\n", vfidx, enable ? "on" : "off"); return -1; } oct->sriov_info.vf_spoofchk[vfidx] = enable; netif_info(lio, drv, lio->netdev, "VF %u spoofchk is %s\n", vfidx, enable ? "on" : "off"); return 0; } static int liquidio_set_vf_vlan(struct net_device *netdev, int vfidx, u16 vlan, u8 qos, __be16 vlan_proto) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; struct octnic_ctrl_pkt nctrl; u16 vlantci; int ret = 0; if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) return -EINVAL; if (vlan_proto != htons(ETH_P_8021Q)) return -EPROTONOSUPPORT; if (vlan >= VLAN_N_VID || qos > 7) return -EINVAL; if (vlan) vlantci = vlan | (u16)qos << VLAN_PRIO_SHIFT; else vlantci = 0; if (oct->sriov_info.vf_vlantci[vfidx] == vlantci) return 0; memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); if (vlan) nctrl.ncmd.s.cmd = OCTNET_CMD_ADD_VLAN_FILTER; else nctrl.ncmd.s.cmd = OCTNET_CMD_DEL_VLAN_FILTER; nctrl.ncmd.s.param1 = vlantci; nctrl.ncmd.s.param2 = vfidx + 1; /* vfidx is 0 based, but vf_num (param2) is 1 based */ nctrl.ncmd.s.more = 0; nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; nctrl.cb_fn = NULL; ret = octnet_send_nic_ctrl_pkt(oct, &nctrl); if (ret) { if (ret > 0) ret = -EIO; return ret; } oct->sriov_info.vf_vlantci[vfidx] = vlantci; return ret; } static int liquidio_get_vf_config(struct net_device *netdev, int vfidx, struct ifla_vf_info *ivi) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; u8 *macaddr; if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) return -EINVAL; memset(ivi, 0, sizeof(struct ifla_vf_info)); ivi->vf = vfidx; macaddr = 2 + (u8 *)&oct->sriov_info.vf_macaddr[vfidx]; ether_addr_copy(&ivi->mac[0], macaddr); ivi->vlan = oct->sriov_info.vf_vlantci[vfidx] & VLAN_VID_MASK; ivi->qos = oct->sriov_info.vf_vlantci[vfidx] >> VLAN_PRIO_SHIFT; if (oct->sriov_info.trusted_vf.active && oct->sriov_info.trusted_vf.id == vfidx) ivi->trusted = true; else ivi->trusted = false; ivi->linkstate = oct->sriov_info.vf_linkstate[vfidx]; ivi->spoofchk = oct->sriov_info.vf_spoofchk[vfidx]; ivi->max_tx_rate = lio->linfo.link.s.speed; ivi->min_tx_rate = 0; return 0; } static int liquidio_send_vf_trust_cmd(struct lio *lio, int vfidx, bool trusted) { struct octeon_device *oct = lio->oct_dev; struct octeon_soft_command *sc; int retval; sc = octeon_alloc_soft_command(oct, 0, 16, 0); if (!sc) return -ENOMEM; sc->iq_no = lio->linfo.txpciq[0].s.q_no; /* vfidx is 0 based, but vf_num (param1) is 1 based */ octeon_prepare_soft_command(oct, sc, OPCODE_NIC, OPCODE_NIC_SET_TRUSTED_VF, 0, vfidx + 1, trusted); init_completion(&sc->complete); sc->sc_status = OCTEON_REQUEST_PENDING; retval = octeon_send_soft_command(oct, sc); if (retval == IQ_SEND_FAILED) { octeon_free_soft_command(oct, sc); retval = -1; } else { /* Wait for response or timeout */ retval = wait_for_sc_completion_timeout(oct, sc, 0); if (retval) return (retval); WRITE_ONCE(sc->caller_is_done, true); } return retval; } static int liquidio_set_vf_trust(struct net_device *netdev, int vfidx, bool setting) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; if (strcmp(oct->fw_info.liquidio_firmware_version, "1.7.1") < 0) { /* trusted vf is not supported by firmware older than 1.7.1 */ return -EOPNOTSUPP; } if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) { netif_info(lio, drv, lio->netdev, "Invalid vfidx %d\n", vfidx); return -EINVAL; } if (setting) { /* Set */ if (oct->sriov_info.trusted_vf.active && oct->sriov_info.trusted_vf.id == vfidx) return 0; if (oct->sriov_info.trusted_vf.active) { netif_info(lio, drv, lio->netdev, "More than one trusted VF is not allowed\n"); return -EPERM; } } else { /* Clear */ if (!oct->sriov_info.trusted_vf.active) return 0; } if (!liquidio_send_vf_trust_cmd(lio, vfidx, setting)) { if (setting) { oct->sriov_info.trusted_vf.id = vfidx; oct->sriov_info.trusted_vf.active = true; } else { oct->sriov_info.trusted_vf.active = false; } netif_info(lio, drv, lio->netdev, "VF %u is %strusted\n", vfidx, setting ? "" : "not "); } else { netif_info(lio, drv, lio->netdev, "Failed to set VF trusted\n"); return -1; } return 0; } static int liquidio_set_vf_link_state(struct net_device *netdev, int vfidx, int linkstate) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; struct octnic_ctrl_pkt nctrl; int ret = 0; if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) return -EINVAL; if (oct->sriov_info.vf_linkstate[vfidx] == linkstate) return 0; memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); nctrl.ncmd.s.cmd = OCTNET_CMD_SET_VF_LINKSTATE; nctrl.ncmd.s.param1 = vfidx + 1; /* vfidx is 0 based, but vf_num (param1) is 1 based */ nctrl.ncmd.s.param2 = linkstate; nctrl.ncmd.s.more = 0; nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; nctrl.cb_fn = NULL; ret = octnet_send_nic_ctrl_pkt(oct, &nctrl); if (!ret) oct->sriov_info.vf_linkstate[vfidx] = linkstate; else if (ret > 0) ret = -EIO; return ret; } static int liquidio_eswitch_mode_get(struct devlink *devlink, u16 *mode) { struct lio_devlink_priv *priv; struct octeon_device *oct; priv = devlink_priv(devlink); oct = priv->oct; *mode = oct->eswitch_mode; return 0; } static int liquidio_eswitch_mode_set(struct devlink *devlink, u16 mode, struct netlink_ext_ack *extack) { struct lio_devlink_priv *priv; struct octeon_device *oct; int ret = 0; priv = devlink_priv(devlink); oct = priv->oct; if (!(oct->fw_info.app_cap_flags & LIQUIDIO_SWITCHDEV_CAP)) return -EINVAL; if (oct->eswitch_mode == mode) return 0; switch (mode) { case DEVLINK_ESWITCH_MODE_SWITCHDEV: oct->eswitch_mode = mode; ret = lio_vf_rep_create(oct); break; case DEVLINK_ESWITCH_MODE_LEGACY: lio_vf_rep_destroy(oct); oct->eswitch_mode = mode; break; default: ret = -EINVAL; } return ret; } static const struct devlink_ops liquidio_devlink_ops = { .eswitch_mode_get = liquidio_eswitch_mode_get, .eswitch_mode_set = liquidio_eswitch_mode_set, }; static int liquidio_get_port_parent_id(struct net_device *dev, struct netdev_phys_item_id *ppid) { struct lio *lio = GET_LIO(dev); struct octeon_device *oct = lio->oct_dev; if (oct->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV) return -EOPNOTSUPP; ppid->id_len = ETH_ALEN; ether_addr_copy(ppid->id, (void *)&lio->linfo.hw_addr + 2); return 0; } static int liquidio_get_vf_stats(struct net_device *netdev, int vfidx, struct ifla_vf_stats *vf_stats) { struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; struct oct_vf_stats stats; int ret; if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) return -EINVAL; memset(&stats, 0, sizeof(struct oct_vf_stats)); ret = cn23xx_get_vf_stats(oct, vfidx, &stats); if (!ret) { vf_stats->rx_packets = stats.rx_packets; vf_stats->tx_packets = stats.tx_packets; vf_stats->rx_bytes = stats.rx_bytes; vf_stats->tx_bytes = stats.tx_bytes; vf_stats->broadcast = stats.broadcast; vf_stats->multicast = stats.multicast; } return ret; } static const struct net_device_ops lionetdevops = { .ndo_open = liquidio_open, .ndo_stop = liquidio_stop, .ndo_start_xmit = liquidio_xmit, .ndo_get_stats64 = liquidio_get_stats64, .ndo_set_mac_address = liquidio_set_mac, .ndo_set_rx_mode = liquidio_set_mcast_list, .ndo_tx_timeout = liquidio_tx_timeout, .ndo_vlan_rx_add_vid = liquidio_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = liquidio_vlan_rx_kill_vid, .ndo_change_mtu = liquidio_change_mtu, .ndo_do_ioctl = liquidio_ioctl, .ndo_fix_features = liquidio_fix_features, .ndo_set_features = liquidio_set_features, .ndo_udp_tunnel_add = liquidio_add_vxlan_port, .ndo_udp_tunnel_del = liquidio_del_vxlan_port, .ndo_set_vf_mac = liquidio_set_vf_mac, .ndo_set_vf_vlan = liquidio_set_vf_vlan, .ndo_get_vf_config = liquidio_get_vf_config, .ndo_set_vf_spoofchk = liquidio_set_vf_spoofchk, .ndo_set_vf_trust = liquidio_set_vf_trust, .ndo_set_vf_link_state = liquidio_set_vf_link_state, .ndo_get_vf_stats = liquidio_get_vf_stats, .ndo_get_port_parent_id = liquidio_get_port_parent_id, }; /** \brief Entry point for the liquidio module */ static int __init liquidio_init(void) { int i; struct handshake *hs; init_completion(&first_stage); octeon_init_device_list(OCTEON_CONFIG_TYPE_DEFAULT); if (liquidio_init_pci()) return -EINVAL; wait_for_completion_timeout(&first_stage, msecs_to_jiffies(1000)); for (i = 0; i < MAX_OCTEON_DEVICES; i++) { hs = &handshake[i]; if (hs->pci_dev) { wait_for_completion(&hs->init); if (!hs->init_ok) { /* init handshake failed */ dev_err(&hs->pci_dev->dev, "Failed to init device\n"); liquidio_deinit_pci(); return -EIO; } } } for (i = 0; i < MAX_OCTEON_DEVICES; i++) { hs = &handshake[i]; if (hs->pci_dev) { wait_for_completion_timeout(&hs->started, msecs_to_jiffies(30000)); if (!hs->started_ok) { /* starter handshake failed */ dev_err(&hs->pci_dev->dev, "Firmware failed to start\n"); liquidio_deinit_pci(); return -EIO; } } } return 0; } 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; int gmxport = 0; union oct_link_status *ls; 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; } /** * \brief Setup network interfaces * @param 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) { struct lio *lio = NULL; struct net_device *netdev; u8 mac[6], i, j, *fw_ver, *micro_ver; unsigned long micro; u32 cur_ver; struct octeon_soft_command *sc; struct liquidio_if_cfg_resp *resp; struct octdev_props *props; int retval, num_iqueues, num_oqueues; int max_num_queues = 0; union oct_nic_if_cfg if_cfg; unsigned int base_queue; unsigned int gmx_port_id; u32 resp_size, data_size; u32 ifidx_or_pfnum; struct lio_version *vdata; struct devlink *devlink; struct lio_devlink_priv *lio_devlink; /* 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 (OCTEON_CN23XX_PF(octeon_dev)) { num_iqueues = octeon_dev->sriov_info.num_pf_rings; num_oqueues = octeon_dev->sriov_info.num_pf_rings; base_queue = octeon_dev->sriov_info.pf_srn; gmx_port_id = octeon_dev->pf_num; ifidx_or_pfnum = octeon_dev->pf_num; } else { num_iqueues = CFG_GET_NUM_TXQS_NIC_IF( octeon_get_conf(octeon_dev), i); num_oqueues = CFG_GET_NUM_RXQS_NIC_IF( octeon_get_conf(octeon_dev), i); base_queue = CFG_GET_BASE_QUE_NIC_IF( octeon_get_conf(octeon_dev), i); gmx_port_id = CFG_GET_GMXID_NIC_IF( octeon_get_conf(octeon_dev), i); ifidx_or_pfnum = i; } dev_dbg(&octeon_dev->pci_dev->dev, "requesting config for interface %d, iqs %d, oqs %d\n", ifidx_or_pfnum, num_iqueues, num_oqueues); if_cfg.u64 = 0; if_cfg.s.num_iqueues = num_iqueues; if_cfg.s.num_oqueues = num_oqueues; if_cfg.s.base_queue = base_queue; if_cfg.s.gmx_port_id = gmx_port_id; 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\n"); WRITE_ONCE(sc->caller_is_done, true); goto setup_nic_dev_done; } snprintf(octeon_dev->fw_info.liquidio_firmware_version, 32, "%s", resp->cfg_info.liquidio_firmware_version); /* Verify f/w version (in case of 'auto' loading from flash) */ fw_ver = octeon_dev->fw_info.liquidio_firmware_version; if (memcmp(LIQUIDIO_BASE_VERSION, fw_ver, strlen(LIQUIDIO_BASE_VERSION))) { dev_err(&octeon_dev->pci_dev->dev, "Unmatched firmware version. Expected %s.x, got %s.\n", LIQUIDIO_BASE_VERSION, fw_ver); WRITE_ONCE(sc->caller_is_done, true); goto setup_nic_dev_done; } else if (atomic_read(octeon_dev->adapter_fw_state) == FW_IS_PRELOADED) { dev_info(&octeon_dev->pci_dev->dev, "Using auto-loaded firmware version %s.\n", fw_ver); } /* extract micro version field; point past '<maj>.<min>.' */ micro_ver = fw_ver + strlen(LIQUIDIO_BASE_VERSION) + 1; if (kstrtoul(micro_ver, 10, µ) != 0) micro = 0; octeon_dev->fw_info.ver.maj = LIQUIDIO_BASE_MAJOR_VERSION; octeon_dev->fw_info.ver.min = LIQUIDIO_BASE_MINOR_VERSION; octeon_dev->fw_info.ver.rev = micro; 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; } if (OCTEON_CN6XXX(octeon_dev)) { max_num_queues = CFG_GET_IQ_MAX_Q(CHIP_CONF(octeon_dev, cn6xxx)); } else if (OCTEON_CN23XX_PF(octeon_dev)) { max_num_queues = CFG_GET_IQ_MAX_Q(CHIP_CONF(octeon_dev, cn23xx_pf)); } dev_dbg(&octeon_dev->pci_dev->dev, "interface %d, iqmask %016llx, oqmask %016llx, numiqueues %d, numoqueues %d max_num_queues: %d\n", i, resp->cfg_info.iqmask, resp->cfg_info.oqmask, num_iqueues, num_oqueues, max_num_queues); netdev = alloc_etherdev_mq(LIO_SIZE, max_num_queues); 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; retval = netif_set_real_num_rx_queues(netdev, num_oqueues); if (retval) { dev_err(&octeon_dev->pci_dev->dev, "setting real number rx failed\n"); WRITE_ONCE(sc->caller_is_done, true); goto setup_nic_dev_free; } retval = netif_set_real_num_tx_queues(netdev, num_iqueues); if (retval) { dev_err(&octeon_dev->pci_dev->dev, "setting real number tx failed\n"); WRITE_ONCE(sc->caller_is_done, true); goto setup_nic_dev_free; } 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; WRITE_ONCE(sc->caller_is_done, true); lio->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); if (OCTEON_CN23XX_PF(octeon_dev) || OCTEON_CN6XXX(octeon_dev)) { lio->dev_capability = NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SG | NETIF_F_RXCSUM | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | 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); lio->dev_capability |= NETIF_F_GSO_UDP_TUNNEL; 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; /*HW_VLAN_RX and HW_VLAN_FILTER is always on*/ netdev->hw_features = 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; /* 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)); for (j = 0; j < octeon_dev->sriov_info.max_vfs; j++) { u8 vfmac[ETH_ALEN]; eth_random_addr(vfmac); if (__liquidio_set_vf_mac(netdev, j, vfmac, false)) { dev_err(&octeon_dev->pci_dev->dev, "Error setting VF%d MAC address\n", j); goto setup_nic_dev_free; } } /* 64-bit swap required on LE machines */ octeon_swap_8B_data(&lio->linfo.hw_addr, 1); for (j = 0; j < 6; 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); /* 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; 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); 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_PF_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); liquidio_set_feature(netdev, OCTNET_CMD_VLAN_FILTER_CTL, OCTNET_CMD_VLAN_FILTER_ENABLE); if ((debug != -1) && (debug & NETIF_MSG_HW)) liquidio_set_feature(netdev, OCTNET_CMD_VERBOSE_ENABLE, 0); if (setup_link_status_change_wq(netdev)) goto setup_nic_dev_free; if ((octeon_dev->fw_info.app_cap_flags & LIQUIDIO_TIME_SYNC_CAP) && setup_sync_octeon_time_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); if (octeon_dev->subsystem_id == OCTEON_CN2350_25GB_SUBSYS_ID || octeon_dev->subsystem_id == OCTEON_CN2360_25GB_SUBSYS_ID) { cur_ver = OCT_FW_VER(octeon_dev->fw_info.ver.maj, octeon_dev->fw_info.ver.min, octeon_dev->fw_info.ver.rev); /* speed control unsupported in f/w older than 1.7.2 */ if (cur_ver < OCT_FW_VER(1, 7, 2)) { dev_info(&octeon_dev->pci_dev->dev, "speed setting not supported by f/w."); octeon_dev->speed_setting = 25; octeon_dev->no_speed_setting = 1; } else { liquidio_get_speed(lio); } if (octeon_dev->speed_setting == 0) { octeon_dev->speed_setting = 25; octeon_dev->no_speed_setting = 1; } } else { octeon_dev->no_speed_setting = 1; octeon_dev->speed_setting = 10; } octeon_dev->speed_boot = octeon_dev->speed_setting; /* don't read FEC setting if unsupported by f/w (see above) */ if (octeon_dev->speed_boot == 25 && !octeon_dev->no_speed_setting) { liquidio_get_fec(lio); octeon_dev->props[lio->ifidx].fec_boot = octeon_dev->props[lio->ifidx].fec; } } devlink = devlink_alloc(&liquidio_devlink_ops, sizeof(struct lio_devlink_priv)); if (!devlink) { dev_err(&octeon_dev->pci_dev->dev, "devlink alloc failed\n"); goto setup_nic_dev_free; } lio_devlink = devlink_priv(devlink); lio_devlink->oct = octeon_dev; if (devlink_register(devlink, &octeon_dev->pci_dev->dev)) { devlink_free(devlink); dev_err(&octeon_dev->pci_dev->dev, "devlink registration failed\n"); goto setup_nic_dev_free; } octeon_dev->devlink = devlink; octeon_dev->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY; 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; } #ifdef CONFIG_PCI_IOV static int octeon_enable_sriov(struct octeon_device *oct) { unsigned int num_vfs_alloced = oct->sriov_info.num_vfs_alloced; struct pci_dev *vfdev; int err; u32 u; if (OCTEON_CN23XX_PF(oct) && num_vfs_alloced) { err = pci_enable_sriov(oct->pci_dev, oct->sriov_info.num_vfs_alloced); if (err) { dev_err(&oct->pci_dev->dev, "OCTEON: Failed to enable PCI sriov: %d\n", err); oct->sriov_info.num_vfs_alloced = 0; return err; } oct->sriov_info.sriov_enabled = 1; /* init lookup table that maps DPI ring number to VF pci_dev * struct pointer */ u = 0; vfdev = pci_get_device(PCI_VENDOR_ID_CAVIUM, OCTEON_CN23XX_VF_VID, NULL); while (vfdev) { if (vfdev->is_virtfn && (vfdev->physfn == oct->pci_dev)) { oct->sriov_info.dpiring_to_vfpcidev_lut[u] = vfdev; u += oct->sriov_info.rings_per_vf; } vfdev = pci_get_device(PCI_VENDOR_ID_CAVIUM, OCTEON_CN23XX_VF_VID, vfdev); } } return num_vfs_alloced; } static int lio_pci_sriov_disable(struct octeon_device *oct) { int u; if (pci_vfs_assigned(oct->pci_dev)) { dev_err(&oct->pci_dev->dev, "VFs are still assigned to VMs.\n"); return -EPERM; } pci_disable_sriov(oct->pci_dev); u = 0; while (u < MAX_POSSIBLE_VFS) { oct->sriov_info.dpiring_to_vfpcidev_lut[u] = NULL; u += oct->sriov_info.rings_per_vf; } oct->sriov_info.num_vfs_alloced = 0; dev_info(&oct->pci_dev->dev, "oct->pf_num:%d disabled VFs\n", oct->pf_num); return 0; } static int liquidio_enable_sriov(struct pci_dev *dev, int num_vfs) { struct octeon_device *oct = pci_get_drvdata(dev); int ret = 0; if ((num_vfs == oct->sriov_info.num_vfs_alloced) && (oct->sriov_info.sriov_enabled)) { dev_info(&oct->pci_dev->dev, "oct->pf_num:%d already enabled num_vfs:%d\n", oct->pf_num, num_vfs); return 0; } if (!num_vfs) { lio_vf_rep_destroy(oct); ret = lio_pci_sriov_disable(oct); } else if (num_vfs > oct->sriov_info.max_vfs) { dev_err(&oct->pci_dev->dev, "OCTEON: Max allowed VFs:%d user requested:%d", oct->sriov_info.max_vfs, num_vfs); ret = -EPERM; } else { oct->sriov_info.num_vfs_alloced = num_vfs; ret = octeon_enable_sriov(oct); dev_info(&oct->pci_dev->dev, "oct->pf_num:%d num_vfs:%d\n", oct->pf_num, num_vfs); ret = lio_vf_rep_create(oct); if (ret) dev_info(&oct->pci_dev->dev, "vf representor create failed"); } return ret; } #endif /** * \brief initialize the NIC * @param 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 i, retval = 0; int num_nic_ports = CFG_GET_NUM_NIC_PORTS(octeon_get_conf(oct)); 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; } /* Call vf_rep_modinit if the firmware is switchdev capable * and do it from the first liquidio function probed. */ if (!oct->octeon_id && oct->fw_info.app_cap_flags & LIQUIDIO_SWITCHDEV_CAP) { retval = lio_vf_rep_modinit(); if (retval) { liquidio_stop_nic_module(oct); goto octnet_init_failure; } } liquidio_ptp_init(oct); dev_dbg(&oct->pci_dev->dev, "Network interfaces ready\n"); return retval; octnet_init_failure: oct->ifcount = 0; return retval; } /** * \brief starter callback that invokes the remaining initialization work after * the NIC is up and running. * @param octptr work struct work_struct */ static void nic_starter(struct work_struct *work) { struct octeon_device *oct; struct cavium_wk *wk = (struct cavium_wk *)work; oct = (struct octeon_device *)wk->ctxptr; if (atomic_read(&oct->status) == OCT_DEV_RUNNING) return; /* If the status of the device is CORE_OK, the core * application has reported its application type. Call * any registered handlers now and move to the RUNNING * state. */ if (atomic_read(&oct->status) != OCT_DEV_CORE_OK) { schedule_delayed_work(&oct->nic_poll_work.work, LIQUIDIO_STARTER_POLL_INTERVAL_MS); return; } atomic_set(&oct->status, OCT_DEV_RUNNING); if (oct->app_mode && oct->app_mode == CVM_DRV_NIC_APP) { dev_dbg(&oct->pci_dev->dev, "Starting NIC module\n"); if (liquidio_init_nic_module(oct)) dev_err(&oct->pci_dev->dev, "NIC initialization failed\n"); else handshake[oct->octeon_id].started_ok = 1; } else { dev_err(&oct->pci_dev->dev, "Unexpected application running on NIC (%d). Check firmware.\n", oct->app_mode); } complete(&handshake[oct->octeon_id].started); } static int octeon_recv_vf_drv_notice(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; int i, notice, vf_idx; bool cores_crashed; u64 *data, vf_num; notice = recv_pkt->rh.r.ossp; data = (u64 *)(get_rbd(recv_pkt->buffer_ptr[0]) + OCT_DROQ_INFO_SIZE); /* the first 64-bit word of data is the vf_num */ vf_num = data[0]; octeon_swap_8B_data(&vf_num, 1); vf_idx = (int)vf_num - 1; cores_crashed = READ_ONCE(oct->cores_crashed); if (notice == VF_DRV_LOADED) { if (!(oct->sriov_info.vf_drv_loaded_mask & BIT_ULL(vf_idx))) { oct->sriov_info.vf_drv_loaded_mask |= BIT_ULL(vf_idx); dev_info(&oct->pci_dev->dev, "driver for VF%d was loaded\n", vf_idx); if (!cores_crashed) try_module_get(THIS_MODULE); } } else if (notice == VF_DRV_REMOVED) { if (oct->sriov_info.vf_drv_loaded_mask & BIT_ULL(vf_idx)) { oct->sriov_info.vf_drv_loaded_mask &= ~BIT_ULL(vf_idx); dev_info(&oct->pci_dev->dev, "driver for VF%d was removed\n", vf_idx); if (!cores_crashed) module_put(THIS_MODULE); } } else if (notice == VF_DRV_MACADDR_CHANGED) { u8 *b = (u8 *)&data[1]; oct->sriov_info.vf_macaddr[vf_idx] = data[1]; dev_info(&oct->pci_dev->dev, "VF driver changed VF%d's MAC address to %pM\n", vf_idx, b + 2); } 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; } /** * \brief Device initialization for each Octeon device that is probed * @param octeon_dev octeon device */ static int octeon_device_init(struct octeon_device *octeon_dev) { int j, ret; char bootcmd[] = "\n"; char *dbg_enb = NULL; enum lio_fw_state fw_state; struct octeon_device_priv *oct_priv = (struct octeon_device_priv *)octeon_dev->priv; atomic_set(&octeon_dev->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(octeon_dev)) return 1; atomic_set(&octeon_dev->status, OCT_DEV_PCI_ENABLE_DONE); /* Identify the Octeon type and map the BAR address space. */ if (octeon_chip_specific_setup(octeon_dev)) { dev_err(&octeon_dev->pci_dev->dev, "Chip specific setup failed\n"); return 1; } atomic_set(&octeon_dev->status, OCT_DEV_PCI_MAP_DONE); /* Only add a reference after setting status 'OCT_DEV_PCI_MAP_DONE', * since that is what is required for the reference to be removed * during de-initialization (see 'octeon_destroy_resources'). */ octeon_register_device(octeon_dev, octeon_dev->pci_dev->bus->number, PCI_SLOT(octeon_dev->pci_dev->devfn), PCI_FUNC(octeon_dev->pci_dev->devfn), true); octeon_dev->app_mode = CVM_DRV_INVALID_APP; /* CN23XX supports preloaded firmware if the following is true: * * The adapter indicates that firmware is currently running AND * 'fw_type' is 'auto'. * * (default state is NEEDS_TO_BE_LOADED, override it if appropriate). */ if (OCTEON_CN23XX_PF(octeon_dev) && cn23xx_fw_loaded(octeon_dev) && fw_type_is_auto()) { atomic_cmpxchg(octeon_dev->adapter_fw_state, FW_NEEDS_TO_BE_LOADED, FW_IS_PRELOADED); } /* If loading firmware, only first device of adapter needs to do so. */ fw_state = atomic_cmpxchg(octeon_dev->adapter_fw_state, FW_NEEDS_TO_BE_LOADED, FW_IS_BEING_LOADED); /* Here, [local variable] 'fw_state' is set to one of: * * FW_IS_PRELOADED: No firmware is to be loaded (see above) * FW_NEEDS_TO_BE_LOADED: The driver's first instance will load * firmware to the adapter. * FW_IS_BEING_LOADED: The driver's second instance will not load * firmware to the adapter. */ /* Prior to f/w load, perform a soft reset of the Octeon device; * if error resetting, return w/error. */ if (fw_state == FW_NEEDS_TO_BE_LOADED) if (octeon_dev->fn_list.soft_reset(octeon_dev)) return 1; /* Initialize the dispatch mechanism used to push packets arriving on * Octeon Output queues. */ if (octeon_init_dispatch_list(octeon_dev)) return 1; octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC, OPCODE_NIC_CORE_DRV_ACTIVE, octeon_core_drv_init, octeon_dev); octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC, OPCODE_NIC_VF_DRV_NOTICE, octeon_recv_vf_drv_notice, octeon_dev); INIT_DELAYED_WORK(&octeon_dev->nic_poll_work.work, nic_starter); octeon_dev->nic_poll_work.ctxptr = (void *)octeon_dev; schedule_delayed_work(&octeon_dev->nic_poll_work.work, LIQUIDIO_STARTER_POLL_INTERVAL_MS); atomic_set(&octeon_dev->status, OCT_DEV_DISPATCH_INIT_DONE); if (octeon_set_io_queues_off(octeon_dev)) { dev_err(&octeon_dev->pci_dev->dev, "setting io queues off failed\n"); return 1; } if (OCTEON_CN23XX_PF(octeon_dev)) { ret = octeon_dev->fn_list.setup_device_regs(octeon_dev); if (ret) { dev_err(&octeon_dev->pci_dev->dev, "OCTEON: Failed to configure device registers\n"); return ret; } } /* Initialize soft command buffer pool */ if (octeon_setup_sc_buffer_pool(octeon_dev)) { dev_err(&octeon_dev->pci_dev->dev, "sc buffer pool allocation failed\n"); return 1; } atomic_set(&octeon_dev->status, OCT_DEV_SC_BUFF_POOL_INIT_DONE); /* Setup the data structures that manage this Octeon's Input queues. */ if (octeon_setup_instr_queues(octeon_dev)) { dev_err(&octeon_dev->pci_dev->dev, "instruction queue initialization failed\n"); return 1; } atomic_set(&octeon_dev->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(octeon_dev)) { dev_err(&octeon_dev->pci_dev->dev, "Response list allocation failed\n"); return 1; } atomic_set(&octeon_dev->status, OCT_DEV_RESP_LIST_INIT_DONE); if (octeon_setup_output_queues(octeon_dev)) { dev_err(&octeon_dev->pci_dev->dev, "Output queue initialization failed\n"); return 1; } atomic_set(&octeon_dev->status, OCT_DEV_DROQ_INIT_DONE); if (OCTEON_CN23XX_PF(octeon_dev)) { if (octeon_dev->fn_list.setup_mbox(octeon_dev)) { dev_err(&octeon_dev->pci_dev->dev, "OCTEON: Mailbox setup failed\n"); return 1; } atomic_set(&octeon_dev->status, OCT_DEV_MBOX_SETUP_DONE); if (octeon_allocate_ioq_vector (octeon_dev, octeon_dev->sriov_info.num_pf_rings)) { dev_err(&octeon_dev->pci_dev->dev, "OCTEON: ioq vector allocation failed\n"); return 1; } atomic_set(&octeon_dev->status, OCT_DEV_MSIX_ALLOC_VECTOR_DONE); } else { /* The input and output queue registers were setup earlier (the * queues were not enabled). Any additional registers * that need to be programmed should be done now. */ ret = octeon_dev->fn_list.setup_device_regs(octeon_dev); if (ret) { dev_err(&octeon_dev->pci_dev->dev, "Failed to configure device registers\n"); return ret; } } /* Initialize the tasklet that handles output queue packet processing.*/ dev_dbg(&octeon_dev->pci_dev->dev, "Initializing droq tasklet\n"); tasklet_init(&oct_priv->droq_tasklet, octeon_droq_bh, (unsigned long)octeon_dev); /* Setup the interrupt handler and record the INT SUM register address */ if (octeon_setup_interrupt(octeon_dev, octeon_dev->sriov_info.num_pf_rings)) return 1; /* Enable Octeon device interrupts */ octeon_dev->fn_list.enable_interrupt(octeon_dev, OCTEON_ALL_INTR); atomic_set(&octeon_dev->status, OCT_DEV_INTR_SET_DONE); /* Send Credit for Octeon Output queues. Credits are always sent BEFORE * the output queue is enabled. * This ensures that we'll receive the f/w CORE DRV_ACTIVE message in * case we've configured CN23XX_SLI_GBL_CONTROL[NOPTR_D] = 0. * Otherwise, it is possible that the DRV_ACTIVE message will be sent * before any credits have been issued, causing the ring to be reset * (and the f/w appear to never have started). */ for (j = 0; j < octeon_dev->num_oqs; j++) writel(octeon_dev->droq[j]->max_count, octeon_dev->droq[j]->pkts_credit_reg); /* Enable the input and output queues for this Octeon device */ ret = octeon_dev->fn_list.enable_io_queues(octeon_dev); if (ret) { dev_err(&octeon_dev->pci_dev->dev, "Failed to enable input/output queues"); return ret; } atomic_set(&octeon_dev->status, OCT_DEV_IO_QUEUES_DONE); if (fw_state == FW_NEEDS_TO_BE_LOADED) { dev_dbg(&octeon_dev->pci_dev->dev, "Waiting for DDR initialization...\n"); if (!ddr_timeout) { dev_info(&octeon_dev->pci_dev->dev, "WAITING. Set ddr_timeout to non-zero value to proceed with initialization.\n"); } schedule_timeout_uninterruptible(HZ * LIO_RESET_SECS); /* Wait for the octeon to initialize DDR after the soft-reset.*/ while (!ddr_timeout) { set_current_state(TASK_INTERRUPTIBLE); if (schedule_timeout(HZ / 10)) { /* user probably pressed Control-C */ return 1; } } ret = octeon_wait_for_ddr_init(octeon_dev, &ddr_timeout); if (ret) { dev_err(&octeon_dev->pci_dev->dev, "DDR not initialized. Please confirm that board is configured to boot from Flash, ret: %d\n", ret); return 1; } if (octeon_wait_for_bootloader(octeon_dev, 1000)) { dev_err(&octeon_dev->pci_dev->dev, "Board not responding\n"); return 1; } /* Divert uboot to take commands from host instead. */ ret = octeon_console_send_cmd(octeon_dev, bootcmd, 50); dev_dbg(&octeon_dev->pci_dev->dev, "Initializing consoles\n"); ret = octeon_init_consoles(octeon_dev); if (ret) { dev_err(&octeon_dev->pci_dev->dev, "Could not access board consoles\n"); return 1; } /* If console debug enabled, specify empty string to use default * enablement ELSE specify NULL string for 'disabled'. */ dbg_enb = octeon_console_debug_enabled(0) ? "" : NULL; ret = octeon_add_console(octeon_dev, 0, dbg_enb); if (ret) { dev_err(&octeon_dev->pci_dev->dev, "Could not access board console\n"); return 1; } else if (octeon_console_debug_enabled(0)) { /* If console was added AND we're logging console output * then set our console print function. */ octeon_dev->console[0].print = octeon_dbg_console_print; } atomic_set(&octeon_dev->status, OCT_DEV_CONSOLE_INIT_DONE); dev_dbg(&octeon_dev->pci_dev->dev, "Loading firmware\n"); ret = load_firmware(octeon_dev); if (ret) { dev_err(&octeon_dev->pci_dev->dev, "Could not load firmware to board\n"); return 1; } atomic_set(octeon_dev->adapter_fw_state, FW_HAS_BEEN_LOADED); } handshake[octeon_dev->octeon_id].init_ok = 1; complete(&handshake[octeon_dev->octeon_id].init); atomic_set(&octeon_dev->status, OCT_DEV_HOST_OK); return 0; } /** * \brief Debug console print function * @param octeon_dev octeon device * @param console_num console number * @param prefix first portion of line to display * @param suffix second portion of line to display * * The OCTEON debug console outputs entire lines (excluding '\n'). * Normally, the line will be passed in the 'prefix' parameter. * However, due to buffering, it is possible for a line to be split into two * parts, in which case they will be passed as the 'prefix' parameter and * 'suffix' parameter. */ static int octeon_dbg_console_print(struct octeon_device *oct, u32 console_num, char *prefix, char *suffix) { if (prefix && suffix) dev_info(&oct->pci_dev->dev, "%u: %s%s\n", console_num, prefix, suffix); else if (prefix) dev_info(&oct->pci_dev->dev, "%u: %s\n", console_num, prefix); else if (suffix) dev_info(&oct->pci_dev->dev, "%u: %s\n", console_num, suffix); return 0; } /** * \brief Exits the module */ static void __exit liquidio_exit(void) { liquidio_deinit_pci(); pr_info("LiquidIO network module is now unloaded\n"); } module_init(liquidio_init); module_exit(liquidio_exit);
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