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net: ethernet: aquantia: Support for NIC-specific code 

Add support for code specific to the Atlantic NIC.

Signed-off-by: Alexander Loktionov <Alexander.Loktionov@aquantia.com>
Signed-off-by: Dmitrii Tarakanov <Dmitrii.Tarakanov@aquantia.com>
Signed-off-by: Pavel Belous <Pavel.Belous@aquantia.com>
Signed-off-by: Dmitry Bezrukov <Dmitry.Bezrukov@aquantia.com>
Signed-off-by: David M. VomLehn <vomlehn@texas.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David VomLehn 2017-01-23 22:09:12 -08:00 committed by David S. Miller
parent ef8115356a
commit 97bde5c4f9
5 changed files with 1381 additions and 0 deletions
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273
drivers/net/ethernet/aquantia/atlantic/aq_main.c Normal file
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/*
* 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);

17
drivers/net/ethernet/aquantia/atlantic/aq_main.h Normal file
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/*
* 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 */

937
drivers/net/ethernet/aquantia/atlantic/aq_nic.c Normal file
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/*
* 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;
}

108
drivers/net/ethernet/aquantia/atlantic/aq_nic.h Normal file
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/*
* 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 */

46
drivers/net/ethernet/aquantia/atlantic/aq_nic_internal.h Normal file
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@ -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 */