diff options
Diffstat (limited to 'drivers/net/ethernet/aquantia')
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/aq_main.c | 273 | ||||
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/aq_main.h | 17 | ||||
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/aq_nic.c | 937 | ||||
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/aq_nic.h | 108 | ||||
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/aq_nic_internal.h | 46 |
5 files changed, 1381 insertions, 0 deletions
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_main.c b/drivers/net/ethernet/aquantia/atlantic/aq_main.c new file mode 100644 index 000000000000..c17c70adef0d --- /dev/null +++ b/drivers/net/ethernet/aquantia/atlantic/aq_main.c @@ -0,0 +1,273 @@ +/* + * aQuantia Corporation Network Driver + * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + */ + +/* File aq_main.c: Main file for aQuantia Linux driver. */ + +#include "aq_main.h" +#include "aq_nic.h" +#include "aq_pci_func.h" +#include "aq_ethtool.h" +#include "hw_atl/hw_atl_a0.h" +#include "hw_atl/hw_atl_b0.h" + +#include <linux/netdevice.h> +#include <linux/module.h> + +static const struct pci_device_id aq_pci_tbl[] = { + { PCI_VDEVICE(AQUANTIA, HW_ATL_DEVICE_ID_0001), }, + { PCI_VDEVICE(AQUANTIA, HW_ATL_DEVICE_ID_D100), }, + { PCI_VDEVICE(AQUANTIA, HW_ATL_DEVICE_ID_D107), }, + { PCI_VDEVICE(AQUANTIA, HW_ATL_DEVICE_ID_D108), }, + { PCI_VDEVICE(AQUANTIA, HW_ATL_DEVICE_ID_D109), }, + {} +}; + +MODULE_DEVICE_TABLE(pci, aq_pci_tbl); + +MODULE_LICENSE("GPL v2"); +MODULE_VERSION(AQ_CFG_DRV_VERSION); +MODULE_AUTHOR(AQ_CFG_DRV_AUTHOR); +MODULE_DESCRIPTION(AQ_CFG_DRV_DESC); + +static struct aq_hw_ops *aq_pci_probe_get_hw_ops_by_id(struct pci_dev *pdev) +{ + struct aq_hw_ops *ops = NULL; + + ops = hw_atl_a0_get_ops_by_id(pdev); + if (!ops) + ops = hw_atl_b0_get_ops_by_id(pdev); + + return ops; +} + +static int aq_ndev_open(struct net_device *ndev) +{ + struct aq_nic_s *aq_nic = NULL; + int err = 0; + + aq_nic = aq_nic_alloc_hot(ndev); + if (!aq_nic) { + err = -ENOMEM; + goto err_exit; + } + err = aq_nic_init(aq_nic); + if (err < 0) + goto err_exit; + err = aq_nic_start(aq_nic); + if (err < 0) + goto err_exit; + +err_exit: + if (err < 0) + aq_nic_deinit(aq_nic); + return err; +} + +static int aq_ndev_close(struct net_device *ndev) +{ + int err = 0; + struct aq_nic_s *aq_nic = netdev_priv(ndev); + + err = aq_nic_stop(aq_nic); + if (err < 0) + goto err_exit; + aq_nic_deinit(aq_nic); + aq_nic_free_hot_resources(aq_nic); + +err_exit: + return err; +} + +static int aq_ndev_start_xmit(struct sk_buff *skb, struct net_device *ndev) +{ + struct aq_nic_s *aq_nic = netdev_priv(ndev); + int err = 0; + + err = aq_nic_xmit(aq_nic, skb); + if (err < 0) + goto err_exit; + +err_exit: + return err; +} + +static int aq_ndev_change_mtu(struct net_device *ndev, int new_mtu) +{ + struct aq_nic_s *aq_nic = netdev_priv(ndev); + int err = 0; + + if (new_mtu == ndev->mtu) { + err = 0; + goto err_exit; + } + if (new_mtu < 68) { + err = -EINVAL; + goto err_exit; + } + err = aq_nic_set_mtu(aq_nic, new_mtu + ETH_HLEN); + if (err < 0) + goto err_exit; + ndev->mtu = new_mtu; + + if (netif_running(ndev)) { + aq_ndev_close(ndev); + aq_ndev_open(ndev); + } + +err_exit: + return err; +} + +static int aq_ndev_set_features(struct net_device *ndev, + netdev_features_t features) +{ + struct aq_nic_s *aq_nic = netdev_priv(ndev); + struct aq_nic_cfg_s *aq_cfg = aq_nic_get_cfg(aq_nic); + bool is_lro = false; + + if (aq_cfg->hw_features & NETIF_F_LRO) { + is_lro = features & NETIF_F_LRO; + + if (aq_cfg->is_lro != is_lro) { + aq_cfg->is_lro = is_lro; + + if (netif_running(ndev)) { + aq_ndev_close(ndev); + aq_ndev_open(ndev); + } + } + } + + return 0; +} + +static int aq_ndev_set_mac_address(struct net_device *ndev, void *addr) +{ + struct aq_nic_s *aq_nic = netdev_priv(ndev); + int err = 0; + + err = eth_mac_addr(ndev, addr); + if (err < 0) + goto err_exit; + err = aq_nic_set_mac(aq_nic, ndev); + if (err < 0) + goto err_exit; + +err_exit: + return err; +} + +static void aq_ndev_set_multicast_settings(struct net_device *ndev) +{ + struct aq_nic_s *aq_nic = netdev_priv(ndev); + int err = 0; + + err = aq_nic_set_packet_filter(aq_nic, ndev->flags); + if (err < 0) + goto err_exit; + + if (netdev_mc_count(ndev)) { + err = aq_nic_set_multicast_list(aq_nic, ndev); + if (err < 0) + goto err_exit; + } + +err_exit:; +} + +static const struct net_device_ops aq_ndev_ops = { + .ndo_open = aq_ndev_open, + .ndo_stop = aq_ndev_close, + .ndo_start_xmit = aq_ndev_start_xmit, + .ndo_set_rx_mode = aq_ndev_set_multicast_settings, + .ndo_change_mtu = aq_ndev_change_mtu, + .ndo_set_mac_address = aq_ndev_set_mac_address, + .ndo_set_features = aq_ndev_set_features +}; + +static int aq_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *pci_id) +{ + struct aq_hw_ops *aq_hw_ops = NULL; + struct aq_pci_func_s *aq_pci_func = NULL; + int err = 0; + + err = pci_enable_device(pdev); + if (err < 0) + goto err_exit; + aq_hw_ops = aq_pci_probe_get_hw_ops_by_id(pdev); + aq_pci_func = aq_pci_func_alloc(aq_hw_ops, pdev, + &aq_ndev_ops, &aq_ethtool_ops); + if (!aq_pci_func) { + err = -ENOMEM; + goto err_exit; + } + err = aq_pci_func_init(aq_pci_func); + if (err < 0) + goto err_exit; + +err_exit: + if (err < 0) { + if (aq_pci_func) + aq_pci_func_free(aq_pci_func); + } + return err; +} + +static void aq_pci_remove(struct pci_dev *pdev) +{ + struct aq_pci_func_s *aq_pci_func = pci_get_drvdata(pdev); + + aq_pci_func_deinit(aq_pci_func); + aq_pci_func_free(aq_pci_func); +} + +static int aq_pci_suspend(struct pci_dev *pdev, pm_message_t pm_msg) +{ + struct aq_pci_func_s *aq_pci_func = pci_get_drvdata(pdev); + + return aq_pci_func_change_pm_state(aq_pci_func, &pm_msg); +} + +static int aq_pci_resume(struct pci_dev *pdev) +{ + struct aq_pci_func_s *aq_pci_func = pci_get_drvdata(pdev); + pm_message_t pm_msg = PMSG_RESTORE; + + return aq_pci_func_change_pm_state(aq_pci_func, &pm_msg); +} + +static struct pci_driver aq_pci_ops = { + .name = AQ_CFG_DRV_NAME, + .id_table = aq_pci_tbl, + .probe = aq_pci_probe, + .remove = aq_pci_remove, + .suspend = aq_pci_suspend, + .resume = aq_pci_resume, +}; + +static int __init aq_module_init(void) +{ + int err = 0; + + err = pci_register_driver(&aq_pci_ops); + if (err < 0) + goto err_exit; + +err_exit: + return err; +} + +static void __exit aq_module_exit(void) +{ + pci_unregister_driver(&aq_pci_ops); +} + +module_init(aq_module_init); +module_exit(aq_module_exit); diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_main.h b/drivers/net/ethernet/aquantia/atlantic/aq_main.h new file mode 100644 index 000000000000..9748e7e575e0 --- /dev/null +++ b/drivers/net/ethernet/aquantia/atlantic/aq_main.h @@ -0,0 +1,17 @@ +/* + * aQuantia Corporation Network Driver + * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + */ + +/* File aq_main.h: Main file for aQuantia Linux driver. */ + +#ifndef AQ_MAIN_H +#define AQ_MAIN_H + +#include "aq_common.h" + +#endif /* AQ_MAIN_H */ diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c new file mode 100644 index 000000000000..84bb44186750 --- /dev/null +++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c @@ -0,0 +1,937 @@ +/* + * aQuantia Corporation Network Driver + * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + */ + +/* File aq_nic.c: Definition of common code for NIC. */ + +#include "aq_nic.h" +#include "aq_ring.h" +#include "aq_vec.h" +#include "aq_hw.h" +#include "aq_pci_func.h" +#include "aq_nic_internal.h" + +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/timer.h> +#include <linux/cpu.h> +#include <linux/ip.h> +#include <linux/tcp.h> +#include <net/ip.h> + +static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues) +{ + struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; + struct aq_rss_parameters *rss_params = &cfg->aq_rss; + int i = 0; + + static u8 rss_key[40] = { + 0x1e, 0xad, 0x71, 0x87, 0x65, 0xfc, 0x26, 0x7d, + 0x0d, 0x45, 0x67, 0x74, 0xcd, 0x06, 0x1a, 0x18, + 0xb6, 0xc1, 0xf0, 0xc7, 0xbb, 0x18, 0xbe, 0xf8, + 0x19, 0x13, 0x4b, 0xa9, 0xd0, 0x3e, 0xfe, 0x70, + 0x25, 0x03, 0xab, 0x50, 0x6a, 0x8b, 0x82, 0x0c + }; + + rss_params->hash_secret_key_size = sizeof(rss_key); + memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key)); + rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX; + + for (i = rss_params->indirection_table_size; i--;) + rss_params->indirection_table[i] = i & (num_rss_queues - 1); +} + +/* Fills aq_nic_cfg with valid defaults */ +static void aq_nic_cfg_init_defaults(struct aq_nic_s *self) +{ + struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; + + cfg->aq_hw_caps = &self->aq_hw_caps; + + cfg->vecs = AQ_CFG_VECS_DEF; + cfg->tcs = AQ_CFG_TCS_DEF; + + cfg->rxds = AQ_CFG_RXDS_DEF; + cfg->txds = AQ_CFG_TXDS_DEF; + + cfg->is_polling = AQ_CFG_IS_POLLING_DEF; + + cfg->is_interrupt_moderation = AQ_CFG_IS_INTERRUPT_MODERATION_DEF; + cfg->itr = cfg->is_interrupt_moderation ? + AQ_CFG_INTERRUPT_MODERATION_RATE_DEF : 0U; + + cfg->is_rss = AQ_CFG_IS_RSS_DEF; + cfg->num_rss_queues = AQ_CFG_NUM_RSS_QUEUES_DEF; + cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF; + cfg->flow_control = AQ_CFG_FC_MODE; + + cfg->mtu = AQ_CFG_MTU_DEF; + cfg->link_speed_msk = AQ_CFG_SPEED_MSK; + cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF; + + cfg->is_lro = AQ_CFG_IS_LRO_DEF; + + cfg->vlan_id = 0U; + + aq_nic_rss_init(self, cfg->num_rss_queues); +} + +/* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */ +int aq_nic_cfg_start(struct aq_nic_s *self) +{ + struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; + + /*descriptors */ + cfg->rxds = min(cfg->rxds, cfg->aq_hw_caps->rxds); + cfg->txds = min(cfg->txds, cfg->aq_hw_caps->txds); + + /*rss rings */ + cfg->vecs = min(cfg->vecs, cfg->aq_hw_caps->vecs); + cfg->vecs = min(cfg->vecs, num_online_cpus()); + /* cfg->vecs should be power of 2 for RSS */ + if (cfg->vecs >= 8U) + cfg->vecs = 8U; + else if (cfg->vecs >= 4U) + cfg->vecs = 4U; + else if (cfg->vecs >= 2U) + cfg->vecs = 2U; + else + cfg->vecs = 1U; + + cfg->irq_type = aq_pci_func_get_irq_type(self->aq_pci_func); + + if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) || + (self->aq_hw_caps.vecs == 1U) || + (cfg->vecs == 1U)) { + cfg->is_rss = 0U; + cfg->vecs = 1U; + } + + cfg->link_speed_msk &= self->aq_hw_caps.link_speed_msk; + cfg->hw_features = self->aq_hw_caps.hw_features; + return 0; +} + +static void aq_nic_service_timer_cb(unsigned long param) +{ + struct aq_nic_s *self = (struct aq_nic_s *)param; + struct net_device *ndev = aq_nic_get_ndev(self); + int err = 0; + bool is_busy = false; + unsigned int i = 0U; + struct aq_hw_link_status_s link_status; + struct aq_ring_stats_rx_s stats_rx; + struct aq_ring_stats_tx_s stats_tx; + + atomic_inc(&self->header.busy_count); + is_busy = true; + if (aq_utils_obj_test(&self->header.flags, AQ_NIC_FLAGS_IS_NOT_READY)) + goto err_exit; + + err = self->aq_hw_ops.hw_get_link_status(self->aq_hw, &link_status); + if (err < 0) + goto err_exit; + + self->aq_hw_ops.hw_interrupt_moderation_set(self->aq_hw, + self->aq_nic_cfg.is_interrupt_moderation); + + if (memcmp(&link_status, &self->link_status, sizeof(link_status))) { + if (link_status.mbps) { + aq_utils_obj_set(&self->header.flags, + AQ_NIC_FLAG_STARTED); + aq_utils_obj_clear(&self->header.flags, + AQ_NIC_LINK_DOWN); + netif_carrier_on(self->ndev); + } else { + netif_carrier_off(self->ndev); + aq_utils_obj_set(&self->header.flags, AQ_NIC_LINK_DOWN); + } + + self->link_status = link_status; + } + + memset(&stats_rx, 0U, sizeof(struct aq_ring_stats_rx_s)); + memset(&stats_tx, 0U, sizeof(struct aq_ring_stats_tx_s)); + for (i = AQ_DIMOF(self->aq_vec); i--;) { + if (self->aq_vec[i]) + aq_vec_add_stats(self->aq_vec[i], &stats_rx, &stats_tx); + } + + ndev->stats.rx_packets = stats_rx.packets; + ndev->stats.rx_bytes = stats_rx.bytes; + ndev->stats.rx_errors = stats_rx.errors; + ndev->stats.tx_packets = stats_tx.packets; + ndev->stats.tx_bytes = stats_tx.bytes; + ndev->stats.tx_errors = stats_tx.errors; + +err_exit: + if (is_busy) + atomic_dec(&self->header.busy_count); + mod_timer(&self->service_timer, + jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL); +} + +static void aq_nic_polling_timer_cb(unsigned long param) +{ + struct aq_nic_s *self = (struct aq_nic_s *)param; + struct aq_vec_s *aq_vec = NULL; + unsigned int i = 0U; + + for (i = 0U, aq_vec = self->aq_vec[0]; + self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) + aq_vec_isr(i, (void *)aq_vec); + + mod_timer(&self->polling_timer, jiffies + + AQ_CFG_POLLING_TIMER_INTERVAL); +} + +static struct net_device *aq_nic_ndev_alloc(void) +{ + return alloc_etherdev_mq(sizeof(struct aq_nic_s), AQ_CFG_VECS_MAX); +} + +struct aq_nic_s *aq_nic_alloc_cold(const struct net_device_ops *ndev_ops, + const struct ethtool_ops *et_ops, + struct device *dev, + struct aq_pci_func_s *aq_pci_func, + unsigned int port, + const struct aq_hw_ops *aq_hw_ops) +{ + struct net_device *ndev = NULL; + struct aq_nic_s *self = NULL; + int err = 0; + + ndev = aq_nic_ndev_alloc(); + self = netdev_priv(ndev); + if (!self) { + err = -EINVAL; + goto err_exit; + } + + ndev->netdev_ops = ndev_ops; + ndev->ethtool_ops = et_ops; + + SET_NETDEV_DEV(ndev, dev); + + ndev->if_port = port; + self->ndev = ndev; + + self->aq_pci_func = aq_pci_func; + + self->aq_hw_ops = *aq_hw_ops; + self->port = (u8)port; + + self->aq_hw = self->aq_hw_ops.create(aq_pci_func, self->port, + &self->aq_hw_ops); + err = self->aq_hw_ops.get_hw_caps(self->aq_hw, &self->aq_hw_caps); + if (err < 0) + goto err_exit; + + aq_nic_cfg_init_defaults(self); + +err_exit: + if (err < 0) { + aq_nic_free_hot_resources(self); + self = NULL; + } + return self; +} + +int aq_nic_ndev_register(struct aq_nic_s *self) +{ + int err = 0; + unsigned int i = 0U; + + if (!self->ndev) { + err = -EINVAL; + goto err_exit; + } + err = self->aq_hw_ops.hw_get_mac_permanent(self->aq_hw, + self->aq_nic_cfg.aq_hw_caps, + self->ndev->dev_addr); + if (err < 0) + goto err_exit; + +#if defined(AQ_CFG_MAC_ADDR_PERMANENT) + { + static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT; + + ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent); + } +#endif + err = register_netdev(self->ndev); + if (err < 0) + goto err_exit; + + self->is_ndev_registered = true; + netif_carrier_off(self->ndev); + + for (i = AQ_CFG_VECS_MAX; i--;) + aq_nic_ndev_queue_stop(self, i); + +err_exit: + return err; +} + +int aq_nic_ndev_init(struct aq_nic_s *self) +{ + struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps; + struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg; + + self->ndev->hw_features |= aq_hw_caps->hw_features; + self->ndev->features = aq_hw_caps->hw_features; + self->ndev->priv_flags = aq_hw_caps->hw_priv_flags; + self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN; + + return 0; +} + +void aq_nic_ndev_free(struct aq_nic_s *self) +{ + if (!self->ndev) + goto err_exit; + + if (self->is_ndev_registered) + unregister_netdev(self->ndev); + + if (self->aq_hw) + self->aq_hw_ops.destroy(self->aq_hw); + + free_netdev(self->ndev); + +err_exit:; +} + +struct aq_nic_s *aq_nic_alloc_hot(struct net_device *ndev) +{ + struct aq_nic_s *self = NULL; + int err = 0; + + if (!ndev) { + err = -EINVAL; + goto err_exit; + } + self = netdev_priv(ndev); + + if (!self) { + err = -EINVAL; + goto err_exit; + } + if (netif_running(ndev)) { + unsigned int i; + + for (i = AQ_CFG_VECS_MAX; i--;) + netif_stop_subqueue(ndev, i); + } + + for (self->aq_vecs = 0; self->aq_vecs < self->aq_nic_cfg.vecs; + self->aq_vecs++) { + self->aq_vec[self->aq_vecs] = + aq_vec_alloc(self, self->aq_vecs, &self->aq_nic_cfg); + if (!self->aq_vec[self->aq_vecs]) { + err = -ENOMEM; + goto err_exit; + } + } + +err_exit: + if (err < 0) { + aq_nic_free_hot_resources(self); + self = NULL; + } + return self; +} + +void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx, + struct aq_ring_s *ring) +{ + self->aq_ring_tx[idx] = ring; +} + +struct device *aq_nic_get_dev(struct aq_nic_s *self) +{ + return self->ndev->dev.parent; +} + +struct net_device *aq_nic_get_ndev(struct aq_nic_s *self) +{ + return self->ndev; +} + +int aq_nic_init(struct aq_nic_s *self) +{ + struct aq_vec_s *aq_vec = NULL; + int err = 0; + unsigned int i = 0U; + + self->power_state = AQ_HW_POWER_STATE_D0; + err = self->aq_hw_ops.hw_reset(self->aq_hw); + if (err < 0) + goto err_exit; + + err = self->aq_hw_ops.hw_init(self->aq_hw, &self->aq_nic_cfg, + aq_nic_get_ndev(self)->dev_addr); + if (err < 0) + goto err_exit; + + for (i = 0U, aq_vec = self->aq_vec[0]; + self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) + aq_vec_init(aq_vec, &self->aq_hw_ops, self->aq_hw); + +err_exit: + return err; +} + +void aq_nic_ndev_queue_start(struct aq_nic_s *self, unsigned int idx) +{ + netif_start_subqueue(self->ndev, idx); +} + +void aq_nic_ndev_queue_stop(struct aq_nic_s *self, unsigned int idx) +{ + netif_stop_subqueue(self->ndev, idx); +} + +int aq_nic_start(struct aq_nic_s *self) +{ + struct aq_vec_s *aq_vec = NULL; + int err = 0; + unsigned int i = 0U; + + err = self->aq_hw_ops.hw_multicast_list_set(self->aq_hw, + self->mc_list.ar, + self->mc_list.count); + if (err < 0) + goto err_exit; + + err = self->aq_hw_ops.hw_packet_filter_set(self->aq_hw, + self->packet_filter); + if (err < 0) + goto err_exit; + + for (i = 0U, aq_vec = self->aq_vec[0]; + self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { + err = aq_vec_start(aq_vec); + if (err < 0) + goto err_exit; + } + + err = self->aq_hw_ops.hw_start(self->aq_hw); + if (err < 0) + goto err_exit; + + err = self->aq_hw_ops.hw_interrupt_moderation_set(self->aq_hw, + self->aq_nic_cfg.is_interrupt_moderation); + if (err < 0) + goto err_exit; + setup_timer(&self->service_timer, &aq_nic_service_timer_cb, + (unsigned long)self); + mod_timer(&self->service_timer, jiffies + + AQ_CFG_SERVICE_TIMER_INTERVAL); + + if (self->aq_nic_cfg.is_polling) { + setup_timer(&self->polling_timer, &aq_nic_polling_timer_cb, + (unsigned long)self); + mod_timer(&self->polling_timer, jiffies + + AQ_CFG_POLLING_TIMER_INTERVAL); + } else { + for (i = 0U, aq_vec = self->aq_vec[0]; + self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { + err = aq_pci_func_alloc_irq(self->aq_pci_func, i, + self->ndev->name, aq_vec, + aq_vec_get_affinity_mask(aq_vec)); + if (err < 0) + goto err_exit; + } + + err = self->aq_hw_ops.hw_irq_enable(self->aq_hw, + AQ_CFG_IRQ_MASK); + if (err < 0) + goto err_exit; + } + + for (i = 0U, aq_vec = self->aq_vec[0]; + self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) + aq_nic_ndev_queue_start(self, i); + + err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs); + if (err < 0) + goto err_exit; + + err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs); + if (err < 0) + goto err_exit; + +err_exit: + return err; +} + +static unsigned int aq_nic_map_skb_frag(struct aq_nic_s *self, + struct sk_buff *skb, + struct aq_ring_buff_s *dx) +{ + unsigned int ret = 0U; + unsigned int nr_frags = skb_shinfo(skb)->nr_frags; + unsigned int frag_count = 0U; + + dx->flags = 0U; + dx->len = skb_headlen(skb); + dx->pa = dma_map_single(aq_nic_get_dev(self), skb->data, dx->len, + DMA_TO_DEVICE); + dx->len_pkt = skb->len; + dx->is_sop = 1U; + dx->is_mapped = 1U; + + ++ret; + + if (skb->ip_summed == CHECKSUM_PARTIAL) { + dx->is_ip_cso = (htons(ETH_P_IP) == skb->protocol) ? 1U : 0U; + dx->is_tcp_cso = + (ip_hdr(skb)->protocol == IPPROTO_TCP) ? 1U : 0U; + dx->is_udp_cso = + (ip_hdr(skb)->protocol == IPPROTO_UDP) ? 1U : 0U; + } + + for (; nr_frags--; ++frag_count) { + unsigned int frag_len; + dma_addr_t frag_pa; + skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count]; + + frag_len = skb_frag_size(frag); + + frag_pa = skb_frag_dma_map(aq_nic_get_dev(self), frag, 0, + frag_len, DMA_TO_DEVICE); + + while (frag_len > AQ_CFG_TX_FRAME_MAX) { + ++dx; + ++ret; + dx->flags = 0U; + dx->len = AQ_CFG_TX_FRAME_MAX; + dx->pa = frag_pa; + dx->is_mapped = 1U; + + frag_len -= AQ_CFG_TX_FRAME_MAX; + frag_pa += AQ_CFG_TX_FRAME_MAX; + } + + ++dx; + ++ret; + + dx->flags = 0U; + dx->len = frag_len; + dx->pa = frag_pa; + dx->is_mapped = 1U; + } + + dx->is_eop = 1U; + dx->skb = skb; + + return ret; +} + +static unsigned int aq_nic_map_skb_lso(struct aq_nic_s *self, + struct sk_buff *skb, + struct aq_ring_buff_s *dx) +{ + dx->flags = 0U; + dx->len_pkt = skb->len; + dx->len_l2 = ETH_HLEN; + dx->len_l3 = ip_hdrlen(skb); + dx->len_l4 = tcp_hdrlen(skb); + dx->mss = skb_shinfo(skb)->gso_size; + dx->is_txc = 1U; + return 1U; +} + +static unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb, + struct aq_ring_buff_s *dx) +{ + unsigned int ret = 0U; + + if (unlikely(skb_is_gso(skb))) { + ret = aq_nic_map_skb_lso(self, skb, dx); + ++dx; + } + + ret += aq_nic_map_skb_frag(self, skb, dx); + + return ret; +} + +int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb) +__releases(&ring->lock) +__acquires(&ring->lock) +{ + struct aq_ring_s *ring = NULL; + unsigned int frags = 0U; + unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs; + unsigned int tc = 0U; + unsigned int trys = AQ_CFG_LOCK_TRYS; + int err = 0; + bool is_nic_in_bad_state; + bool is_busy = false; + struct aq_ring_buff_s buffers[AQ_CFG_SKB_FRAGS_MAX]; + + frags = skb_shinfo(skb)->nr_frags + 1; + + ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)]; + + atomic_inc(&self->header.busy_count); + is_busy = true; + + if (frags > AQ_CFG_SKB_FRAGS_MAX) { + dev_kfree_skb_any(skb); + goto err_exit; + } + + is_nic_in_bad_state = aq_utils_obj_test(&self->header.flags, + AQ_NIC_FLAGS_IS_NOT_TX_READY) || + (aq_ring_avail_dx(ring) < + AQ_CFG_SKB_FRAGS_MAX); + + if (is_nic_in_bad_state) { + aq_nic_ndev_queue_stop(self, ring->idx); + err = NETDEV_TX_BUSY; + goto err_exit; + } + + do { + if (spin_trylock(&ring->header.lock)) { + frags = aq_nic_map_skb(self, skb, &buffers[0]); + + aq_ring_tx_append_buffs(ring, &buffers[0], frags); + + err = self->aq_hw_ops.hw_ring_tx_xmit(self->aq_hw, + ring, frags); + if (err >= 0) { + if (aq_ring_avail_dx(ring) < + AQ_CFG_SKB_FRAGS_MAX + 1) + aq_nic_ndev_queue_stop(self, ring->idx); + } + spin_unlock(&ring->header.lock); + + if (err >= 0) { + ++ring->stats.tx.packets; + ring->stats.tx.bytes += skb->len; + } + break; + } + } while (--trys); + + if (!trys) { + err = NETDEV_TX_BUSY; + goto err_exit; + } + +err_exit: + if (is_busy) + atomic_dec(&self->header.busy_count); + return err; +} + +int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags) +{ + int err = 0; + + err = self->aq_hw_ops.hw_packet_filter_set(self->aq_hw, flags); + if (err < 0) + goto err_exit; + + self->packet_filter = flags; + +err_exit: + return err; +} + +int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev) +{ + struct netdev_hw_addr *ha = NULL; + unsigned int i = 0U; + + self->mc_list.count = 0U; + + netdev_for_each_mc_addr(ha, ndev) { + ether_addr_copy(self->mc_list.ar[i++], ha->addr); + ++self->mc_list.count; + } + + return self->aq_hw_ops.hw_multicast_list_set(self->aq_hw, + self->mc_list.ar, + self->mc_list.count); +} + +int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu) +{ + int err = 0; + + if (new_mtu > self->aq_hw_caps.mtu) { + err = -EINVAL; + goto err_exit; + } + self->aq_nic_cfg.mtu = new_mtu; + +err_exit: + return err; +} + +int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev) +{ + return self->aq_hw_ops.hw_set_mac_address(self->aq_hw, ndev->dev_addr); +} + +unsigned int aq_nic_get_link_speed(struct aq_nic_s *self) +{ + return self->link_status.mbps; +} + +int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p) +{ + u32 *regs_buff = p; + int err = 0; + + regs->version = 1; + + err = self->aq_hw_ops.hw_get_regs(self->aq_hw, + &self->aq_hw_caps, regs_buff); + if (err < 0) + goto err_exit; + +err_exit: + return err; +} + +int aq_nic_get_regs_count(struct aq_nic_s *self) +{ + return self->aq_hw_caps.mac_regs_count; +} + +void aq_nic_get_stats(struct aq_nic_s *self, u64 *data) +{ + struct aq_vec_s *aq_vec = NULL; + unsigned int i = 0U; + unsigned int count = 0U; + int err = 0; + + err = self->aq_hw_ops.hw_get_hw_stats(self->aq_hw, data, &count); + if (err < 0) + goto err_exit; + + data += count; + count = 0U; + + for (i = 0U, aq_vec = self->aq_vec[0]; + self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { + data += count; + aq_vec_get_sw_stats(aq_vec, data, &count); + } + +err_exit:; + (void)err; +} + +void aq_nic_get_link_settings(struct aq_nic_s *self, struct ethtool_cmd *cmd) +{ + cmd->port = PORT_TP; + cmd->transceiver = XCVR_EXTERNAL; + /* This driver supports only 10G capable adapters, so DUPLEX_FULL */ + cmd->duplex = DUPLEX_FULL; + cmd->autoneg = self->aq_nic_cfg.is_autoneg; + + cmd->supported |= (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_10G) ? + ADVERTISED_10000baseT_Full : 0U; + cmd->supported |= (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_1G) ? + ADVERTISED_1000baseT_Full : 0U; + cmd->supported |= (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_100M) ? + ADVERTISED_100baseT_Full : 0U; + cmd->supported |= self->aq_hw_caps.flow_control ? SUPPORTED_Pause : 0; + cmd->supported |= SUPPORTED_Autoneg; + + cmd->advertising = (self->aq_nic_cfg.is_autoneg) ? + ADVERTISED_Autoneg : 0U; + cmd->advertising |= + (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G) ? + ADVERTISED_10000baseT_Full : 0U; + cmd->advertising |= + (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G) ? + ADVERTISED_1000baseT_Full : 0U; + + cmd->advertising |= + (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M) ? + ADVERTISED_100baseT_Full : 0U; + cmd->advertising |= (self->aq_nic_cfg.flow_control) ? + ADVERTISED_Pause : 0U; +} + +int aq_nic_set_link_settings(struct aq_nic_s *self, struct ethtool_cmd *cmd) +{ + u32 speed = 0U; + u32 rate = 0U; + int err = 0; + + if (cmd->autoneg == AUTONEG_ENABLE) { + rate = self->aq_hw_caps.link_speed_msk; + self->aq_nic_cfg.is_autoneg = true; + } else { + speed = ethtool_cmd_speed(cmd); + + switch (speed) { + case SPEED_100: + rate = AQ_NIC_RATE_100M; + break; + + case SPEED_1000: + rate = AQ_NIC_RATE_1G; + break; + + case SPEED_2500: + rate = AQ_NIC_RATE_2GS; + break; + + case SPEED_5000: + rate = AQ_NIC_RATE_5G; + break; + + case SPEED_10000: + rate = AQ_NIC_RATE_10G; + break; + + default: + err = -1; + goto err_exit; + break; + } + if (!(self->aq_hw_caps.link_speed_msk & rate)) { + err = -1; + goto err_exit; + } + + self->aq_nic_cfg.is_autoneg = false; + } + + err = self->aq_hw_ops.hw_set_link_speed(self->aq_hw, rate); + if (err < 0) + goto err_exit; + + self->aq_nic_cfg.link_speed_msk = rate; + +err_exit: + return err; +} + +struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self) +{ + return &self->aq_nic_cfg; +} + +u32 aq_nic_get_fw_version(struct aq_nic_s *self) +{ + u32 fw_version = 0U; + + self->aq_hw_ops.hw_get_fw_version(self->aq_hw, &fw_version); + + return fw_version; +} + +int aq_nic_stop(struct aq_nic_s *self) +{ + struct aq_vec_s *aq_vec = NULL; + unsigned int i = 0U; + + for (i = 0U, aq_vec = self->aq_vec[0]; + self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) + aq_nic_ndev_queue_stop(self, i); + + del_timer_sync(&self->service_timer); + + self->aq_hw_ops.hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK); + + if (self->aq_nic_cfg.is_polling) + del_timer_sync(&self->polling_timer); + else + aq_pci_func_free_irqs(self->aq_pci_func); + + for (i = 0U, aq_vec = self->aq_vec[0]; + self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) + aq_vec_stop(aq_vec); + + return self->aq_hw_ops.hw_stop(self->aq_hw); +} + +void aq_nic_deinit(struct aq_nic_s *self) +{ + struct aq_vec_s *aq_vec = NULL; + unsigned int i = 0U; + + if (!self) + goto err_exit; + + for (i = 0U, aq_vec = self->aq_vec[0]; + self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) + aq_vec_deinit(aq_vec); + + if (self->power_state == AQ_HW_POWER_STATE_D0) { + (void)self->aq_hw_ops.hw_deinit(self->aq_hw); + } else { + (void)self->aq_hw_ops.hw_set_power(self->aq_hw, + self->power_state); + } + +err_exit:; +} + +void aq_nic_free_hot_resources(struct aq_nic_s *self) +{ + unsigned int i = 0U; + + if (!self) + goto err_exit; + + for (i = AQ_DIMOF(self->aq_vec); i--;) { + if (self->aq_vec[i]) + aq_vec_free(self->aq_vec[i]); + } + +err_exit:; +} + +int aq_nic_change_pm_state(struct aq_nic_s *self, pm_message_t *pm_msg) +{ + int err = 0; + + if (!netif_running(self->ndev)) { + err = 0; + goto err_exit; + } + rtnl_lock(); + if (pm_msg->event & PM_EVENT_SLEEP || pm_msg->event & PM_EVENT_FREEZE) { + self->power_state = AQ_HW_POWER_STATE_D3; + netif_device_detach(self->ndev); + netif_tx_stop_all_queues(self->ndev); + + err = aq_nic_stop(self); + if (err < 0) + goto err_exit; + + aq_nic_deinit(self); + } else { + err = aq_nic_init(self); + if (err < 0) + goto err_exit; + + err = aq_nic_start(self); + if (err < 0) + goto err_exit; + + netif_device_attach(self->ndev); + netif_tx_start_all_queues(self->ndev); + } + rtnl_unlock(); + +err_exit: + return err; +} diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.h b/drivers/net/ethernet/aquantia/atlantic/aq_nic.h new file mode 100644 index 000000000000..055e2cdb0f6f --- /dev/null +++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.h @@ -0,0 +1,108 @@ +/* + * aQuantia Corporation Network Driver + * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + */ + +/* File aq_nic.h: Declaration of common code for NIC. */ + +#ifndef AQ_NIC_H +#define AQ_NIC_H + +#include "aq_common.h" +#include "aq_rss.h" + +struct aq_ring_s; +struct aq_pci_func_s; +struct aq_hw_ops; + +#define AQ_NIC_FC_OFF 0U +#define AQ_NIC_FC_TX 1U +#define AQ_NIC_FC_RX 2U +#define AQ_NIC_FC_FULL 3U +#define AQ_NIC_FC_AUTO 4U + +#define AQ_NIC_RATE_10G BIT(0) +#define AQ_NIC_RATE_5G BIT(1) +#define AQ_NIC_RATE_5GSR BIT(2) +#define AQ_NIC_RATE_2GS BIT(3) +#define AQ_NIC_RATE_1G BIT(4) +#define AQ_NIC_RATE_100M BIT(5) + +struct aq_nic_cfg_s { + struct aq_hw_caps_s *aq_hw_caps; + u64 hw_features; + u32 rxds; /* rx ring size, descriptors # */ + u32 txds; /* tx ring size, descriptors # */ + u32 vecs; /* vecs==allocated irqs */ + u32 irq_type; + u32 itr; + u32 num_rss_queues; + u32 mtu; + u32 ucp_0x364; + u32 flow_control; + u32 link_speed_msk; + u32 vlan_id; + u16 is_mc_list_enabled; + u16 mc_list_count; + bool is_autoneg; + bool is_interrupt_moderation; + bool is_polling; + bool is_rss; + bool is_lro; + u8 tcs; + struct aq_rss_parameters aq_rss; +}; + +#define AQ_NIC_FLAG_STARTED 0x00000004U +#define AQ_NIC_FLAG_STOPPING 0x00000008U +#define AQ_NIC_FLAG_RESETTING 0x00000010U +#define AQ_NIC_FLAG_CLOSING 0x00000020U +#define AQ_NIC_LINK_DOWN 0x04000000U +#define AQ_NIC_FLAG_ERR_UNPLUG 0x40000000U +#define AQ_NIC_FLAG_ERR_HW 0x80000000U + +#define AQ_NIC_TCVEC2RING(_NIC_, _TC_, _VEC_) \ + ((_TC_) * AQ_CFG_TCS_MAX + (_VEC_)) + +struct aq_nic_s *aq_nic_alloc_cold(const struct net_device_ops *ndev_ops, + const struct ethtool_ops *et_ops, + struct device *dev, + struct aq_pci_func_s *aq_pci_func, + unsigned int port, + const struct aq_hw_ops *aq_hw_ops); +int aq_nic_ndev_init(struct aq_nic_s *self); +struct aq_nic_s *aq_nic_alloc_hot(struct net_device *ndev); +void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx, + struct aq_ring_s *ring); +struct device *aq_nic_get_dev(struct aq_nic_s *self); +struct net_device *aq_nic_get_ndev(struct aq_nic_s *self); +int aq_nic_init(struct aq_nic_s *self); +int aq_nic_cfg_start(struct aq_nic_s *self); +int aq_nic_ndev_register(struct aq_nic_s *self); +void aq_nic_ndev_queue_start(struct aq_nic_s *self, unsigned int idx); +void aq_nic_ndev_queue_stop(struct aq_nic_s *self, unsigned int idx); +void aq_nic_ndev_free(struct aq_nic_s *self); +int aq_nic_start(struct aq_nic_s *self); +int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb); +int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p); +int aq_nic_get_regs_count(struct aq_nic_s *self); +void aq_nic_get_stats(struct aq_nic_s *self, u64 *data); +int aq_nic_stop(struct aq_nic_s *self); +void aq_nic_deinit(struct aq_nic_s *self); +void aq_nic_free_hot_resources(struct aq_nic_s *self); +int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu); +int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev); +int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags); +int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev); +unsigned int aq_nic_get_link_speed(struct aq_nic_s *self); +void aq_nic_get_link_settings(struct aq_nic_s *self, struct ethtool_cmd *cmd); +int aq_nic_set_link_settings(struct aq_nic_s *self, struct ethtool_cmd *cmd); +struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self); +u32 aq_nic_get_fw_version(struct aq_nic_s *self); +int aq_nic_change_pm_state(struct aq_nic_s *self, pm_message_t *pm_msg); + +#endif /* AQ_NIC_H */ diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic_internal.h b/drivers/net/ethernet/aquantia/atlantic/aq_nic_internal.h new file mode 100644 index 000000000000..f81738a71c42 --- /dev/null +++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic_internal.h @@ -0,0 +1,46 @@ +/* + * aQuantia Corporation Network Driver + * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + */ + +/* File aq_nic_internal.h: Definition of private object structure. */ + +#ifndef AQ_NIC_INTERNAL_H +#define AQ_NIC_INTERNAL_H + +struct aq_nic_s { + struct aq_obj_s header; + struct aq_vec_s *aq_vec[AQ_CFG_VECS_MAX]; + struct aq_ring_s *aq_ring_tx[AQ_CFG_VECS_MAX * AQ_CFG_TCS_MAX]; + struct aq_hw_s *aq_hw; + struct net_device *ndev; + struct aq_pci_func_s *aq_pci_func; + unsigned int aq_vecs; + unsigned int packet_filter; + unsigned int power_state; + bool is_ndev_registered; + u8 port; + struct aq_hw_ops aq_hw_ops; + struct aq_hw_caps_s aq_hw_caps; + struct aq_nic_cfg_s aq_nic_cfg; + struct timer_list service_timer; + struct timer_list polling_timer; + struct aq_hw_link_status_s link_status; + struct { + u32 count; + u8 ar[AQ_CFG_MULTICAST_ADDRESS_MAX][ETH_ALEN]; + } mc_list; +}; + +#define AQ_NIC_FLAGS_IS_NOT_READY (AQ_NIC_FLAG_STOPPING | \ + AQ_NIC_FLAG_RESETTING | AQ_NIC_FLAG_CLOSING | \ + AQ_NIC_FLAG_ERR_UNPLUG | AQ_NIC_FLAG_ERR_HW) + +#define AQ_NIC_FLAGS_IS_NOT_TX_READY (AQ_NIC_FLAGS_IS_NOT_READY | \ + AQ_NIC_LINK_DOWN) + +#endif /* AQ_NIC_INTERNAL_H */ |