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aq_nic.c
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aq_nic.c
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// SPDX-License-Identifier: GPL-2.0-only
/* Atlantic Network Driver
*
* Copyright (C) 2014-2019 aQuantia Corporation
* Copyright (C) 2019-2020 Marvell International Ltd.
*/
/* File aq_nic.c: Definition of common code for NIC. */
#include <linux/moduleparam.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/pm_runtime.h>
#include <linux/firmware.h>
#include <linux/timer.h>
#include <linux/cpu.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <net/ip.h>
#include <net/tcp.h>
#include <net/ipv6.h>
#include <net/pkt_cls.h>
#include "aq_nic.h"
#include "aq_ring.h"
#include "aq_vec.h"
#include "aq_hw.h"
#include "aq_pci_func.h"
#include "aq_macsec.h"
#include "aq_main.h"
#include "aq_ptp.h"
#include "aq_phy.h"
#include "aq_filters.h"
#include "aq_trace.h"
#include "aq_hw_utils.h"
static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO;
module_param_named(aq_itr, aq_itr, uint, 0644);
MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode");
static unsigned int aq_itr_tx;
module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644);
MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate");
static unsigned int aq_itr_rx;
module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
static unsigned int aq_rxpageorder;
module_param_named(aq_rxpageorder, aq_rxpageorder, uint, 0644);
MODULE_PARM_DESC(aq_rxpageorder, "RX page order override");
unsigned int aq_rx_refill_thres = 32;
module_param_named(aq_rx_refill_thres, aq_rx_refill_thres, uint, 0644);
MODULE_PARM_DESC(aq_rx_refill_thres, "RX refill threshold");
unsigned int debug = AQ_MSG_DRV | AQ_MSG_LINK;
module_param_named(debug, debug, uint, 0644);
MODULE_PARM_DESC(debug, "Default debug msglevel");
#define AQ_MODULE_PARAM_ARR(X, type, desc) \
static type X[AQ_NIC_MAX] = { 0 }; \
static unsigned int X##_count; \
module_param_array_named(X, X, type, &X##_count, 0644); \
MODULE_PARM_DESC(X, desc)
AQ_MODULE_PARAM_ARR(aq_fw_did, uint, "Use FW image for this DID");
AQ_MODULE_PARAM_ARR(aq_fw_sid, uint, "Use provisioning data for this SID");
AQ_MODULE_PARAM_ARR(aq_force_host_boot, uint, "Force host boot");
int aq_enable_wa;
module_param_named(aq_enable_wa, aq_enable_wa, int, 0644);
MODULE_PARM_DESC(aq_enable_wa, "Quirk bits to enable HW workarounds");
static bool aq_enable_ptp = AQ_CFG_PTP_DEF;
module_param(aq_enable_ptp, bool, 0644);
MODULE_PARM_DESC(aq_enable_ptp, "Enable PTP");
static void aq_nic_update_ndev_stats(struct aq_nic_s *self);
static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
{
static u8 rss_key[AQ_CFG_RSS_HASHKEY_SIZE] = {
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
};
struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
struct aq_rss_parameters *rss_params;
int i = 0;
rss_params = &cfg->aq_rss;
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);
}
/* Recalculate the number of vectors */
static void aq_nic_cfg_update_num_vecs(struct aq_nic_s *self)
{
struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
cfg->vecs = min(cfg->vecs, num_online_cpus());
if (self->irqvecs > AQ_HW_SERVICE_IRQS + AQ_HW_PTP_IRQS)
cfg->vecs = min(cfg->vecs,
self->irqvecs - AQ_HW_SERVICE_IRQS - AQ_HW_PTP_IRQS);
else if (self->irqvecs > AQ_HW_PTP_IRQS)
cfg->vecs = min(cfg->vecs,
self->irqvecs - AQ_HW_PTP_IRQS);
else
cfg->vecs = 1U;
/* cfg->vecs should be power of 2 for RSS */
cfg->vecs = rounddown_pow_of_two(cfg->vecs);
if (ATL_HW_IS_CHIP_FEATURE(self->aq_hw, ANTIGUA)) {
if (cfg->tcs > 2)
cfg->vecs = min(cfg->vecs, 4U);
}
aq_pr_verbose(self, AQ_MSG_DEBUG, "cfg->vecs = %d\n", cfg->vecs);
if (cfg->vecs <= 4)
cfg->tc_mode = AQ_TC_MODE_8TCS;
else
cfg->tc_mode = AQ_TC_MODE_4TCS;
/*rss rings */
cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF);
aq_nic_rss_init(self, cfg->num_rss_queues);
}
/* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
void aq_nic_cfg_start(struct aq_nic_s *self)
{
struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
int i;
cfg->tcs = AQ_CFG_TCS_DEF;
cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
cfg->itr = aq_itr;
cfg->tx_itr = aq_itr_tx;
cfg->rx_itr = aq_itr_rx;
cfg->rxpageorder = aq_rxpageorder;
cfg->is_rss = AQ_CFG_IS_RSS_DEF;
cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
cfg->fc.req = AQ_CFG_FC_MODE;
cfg->wol = AQ_CFG_WOL_MODES;
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->is_ptp = aq_enable_ptp;
/*descriptors */
cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);
aq_nic_cfg_update_num_vecs(self);
cfg->num_irq_vecs = self->irqvecs;
cfg->irq_type = aq_pci_func_get_irq_type(self);
if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
(cfg->aq_hw_caps->vecs == 1U) ||
(cfg->vecs == 1U)) {
cfg->is_rss = 0U;
cfg->vecs = 1U;
}
/* Check if we have enough vectors allocated for
* link status IRQ. If no - we'll know link state from
* slower service task.
*/
if (AQ_HW_SERVICE_IRQS > 0 &&
self->irqvecs > AQ_HW_PTP_IRQS + AQ_HW_SERVICE_IRQS)
cfg->link_irq_vec = cfg->vecs;
else
cfg->link_irq_vec = 0;
cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
cfg->features = cfg->aq_hw_caps->hw_features;
cfg->is_vlan_rx_strip = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_RX);
cfg->is_vlan_tx_insert = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_TX);
cfg->is_vlan_force_promisc = true;
/* enable downshift feature by default */
cfg->priv_flags = AQ_HW_DOWNSHIFT_MASK;
for (i = 0; i < sizeof(cfg->prio_tc_map); i++)
cfg->prio_tc_map[i] = cfg->tcs * i / 8;
}
static int aq_nic_update_link_status(struct aq_nic_s *self)
{
struct aq_hw_link_status_s *new_link_status = &self->aq_hw->aq_link_status;
int err = self->aq_fw_ops->update_link_status(self->aq_hw);
u32 fc = 0;
if (err)
return err;
if (self->aq_fw_ops->get_flow_control)
self->aq_fw_ops->get_flow_control(self->aq_hw, &fc);
self->aq_nic_cfg.fc.cur = fc;
if (self->link_status.mbps != new_link_status->mbps) {
aq_pr_verbose(self, NETIF_MSG_LINK, "%s: link change old %d new %d\n",
AQ_CFG_DRV_NAME, self->link_status.mbps,
new_link_status->mbps);
aq_nic_update_interrupt_moderation_settings(self);
if (self->aq_ptp) {
/* PTP does not work in some modes even if physical link is up */
bool ptp_link_good = (new_link_status->mbps >= 100 &&
new_link_status->full_duplex);
aq_ptp_clock_init(self, ptp_link_good ? AQ_PTP_LINK_UP : AQ_PTP_NO_LINK);
aq_ptp_tm_offset_set(self, new_link_status->mbps);
}
/* Driver has to update flow control settings on RX block
* on any link event.
* We should query FW whether it negotiated FC.
*/
if (self->aq_hw_ops->hw_set_fc)
self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0);
}
self->link_status = self->aq_hw->aq_link_status;
if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) {
aq_utils_obj_set(&self->flags,
AQ_NIC_FLAG_STARTED);
aq_utils_obj_clear(&self->flags,
AQ_NIC_LINK_DOWN);
pm_runtime_get_sync(&self->pdev->dev);
netif_carrier_on(self->ndev);
#if IS_ENABLED(CONFIG_MACSEC)
aq_macsec_enable(self);
#endif
if (self->aq_hw_ops->hw_tc_rate_limit_set)
self->aq_hw_ops->hw_tc_rate_limit_set(self->aq_hw);
netif_tx_wake_all_queues(self->ndev);
}
if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) {
netif_carrier_off(self->ndev);
netif_tx_disable(self->ndev);
aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN);
pm_runtime_put(&self->pdev->dev);
}
return 0;
}
static irqreturn_t aq_linkstate_threaded_isr(int irq, void *private)
{
struct aq_nic_s *self = private;
if (!self)
return IRQ_NONE;
aq_nic_update_link_status(self);
self->aq_hw_ops->hw_irq_enable(self->aq_hw,
BIT(self->aq_nic_cfg.link_irq_vec));
return IRQ_HANDLED;
}
static void aq_nic_service_task(struct work_struct *work)
{
struct aq_nic_s *self = container_of(work, struct aq_nic_s,
service_task);
int err;
aq_ptp_service_task(self);
if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY))
return;
err = aq_nic_update_link_status(self);
if (err)
return;
#if IS_ENABLED(CONFIG_MACSEC)
aq_macsec_work(self);
#endif
mutex_lock(&self->fwreq_mutex);
if (self->aq_fw_ops->update_stats)
self->aq_fw_ops->update_stats(self->aq_hw);
mutex_unlock(&self->fwreq_mutex);
aq_nic_update_ndev_stats(self);
/* DASH event support on FW 4.x */
aq_dash_process_events(self);
}
static void aq_nic_service_timer_cb(struct timer_list *t)
{
struct aq_nic_s *self = from_timer(self, t, service_timer);
mod_timer(&self->service_timer,
jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL);
aq_ndev_schedule_work(&self->service_task);
}
static void aq_nic_polling_timer_cb(struct timer_list *t)
{
struct aq_nic_s *self = from_timer(self, t, polling_timer);
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 int aq_nic_hw_prepare(struct aq_nic_s *self)
{
int err = 0;
err = self->aq_hw_ops->hw_soft_reset(self->aq_hw);
self->aq_hw->clk_select = -1;
if (err) {
if (self->aq_hw->image_required) {
aq_nic_request_firmware(self);
err = self->aq_hw_ops->hw_soft_reset(self->aq_hw);
if (err)
goto exit;
} else {
goto exit;
}
}
err = self->aq_hw_ops->hw_prepare(self->aq_hw, &self->aq_fw_ops);
exit:
return err;
}
static bool aq_nic_is_valid_ether_addr(const u8 *addr)
{
/* Some engineering samples of Aquantia NICs are provisioned with a
* partially populated MAC, which is still invalid.
*/
return !(addr[0] == 0 && addr[1] == 0 && addr[2] == 0);
}
int aq_nic_ndev_register(struct aq_nic_s *self)
{
u8 addr[ETH_ALEN];
int err = 0;
if (!self->ndev) {
err = -EINVAL;
goto err_exit;
}
#ifdef AQ_CFG_FAST_START
self->aq_hw->fast_start_enabled = true;
#endif
err = aq_nic_hw_prepare(self);
if (err) {
aq_pr_err("HW prepare failed, err = %d\n", err);
goto err_exit;
}
#if IS_ENABLED(CONFIG_MACSEC)
aq_macsec_init(self);
#endif
if (platform_get_ethdev_address(&self->pdev->dev, self->ndev) != 0) {
// If DT has none or an invalid one, ask device for MAC address
mutex_lock(&self->fwreq_mutex);
err = self->aq_fw_ops->get_mac_permanent(self->aq_hw, addr);
mutex_unlock(&self->fwreq_mutex);
if (err)
goto err_exit;
if (is_valid_ether_addr(addr) &&
aq_nic_is_valid_ether_addr(addr)) {
eth_hw_addr_set(self->ndev, addr);
} else {
netdev_warn(self->ndev, "MAC is invalid, will use random.");
eth_hw_addr_random(self->ndev);
}
}
#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
for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs;
self->aq_vecs++) {
self->aq_vec[self->aq_vecs] =
aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self));
if (!self->aq_vec[self->aq_vecs]) {
err = -ENOMEM;
goto err_exit;
}
}
netif_carrier_off(self->ndev);
netif_tx_disable(self->ndev);
err = register_netdev(self->ndev);
if (err) {
aq_pr_err("Netedev register failed, err = %d\n", err);
goto err_exit;
}
err_exit:
#if IS_ENABLED(CONFIG_MACSEC)
if (err)
aq_macsec_free(self);
#endif
return err;
}
void aq_nic_ndev_init(struct aq_nic_s *self)
{
const 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;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 33)
self->ndev->hw_features |= aq_hw_caps->hw_features;
#endif
self->ndev->features = aq_hw_caps->hw_features;
self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
NETIF_F_RXHASH | NETIF_F_SG |
NETIF_F_LRO | NETIF_F_TSO | NETIF_F_TSO6;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
self->ndev->gso_partial_features = NETIF_F_GSO_UDP_L4;
self->ndev->gso_max_size = 256*1024;
#endif
self->ndev->priv_flags |= aq_hw_caps->hw_priv_flags;
self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
self->msg_enable = debug;
self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
#elif (RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 5))
self->ndev->extended->min_mtu = ETH_MIN_MTU;
self->ndev->extended->max_mtu = aq_hw_caps->mtu -
ETH_FCS_LEN - ETH_HLEN;
#endif
}
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 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;
unsigned int i = 0U;
int err = 0;
self->power_state = AQ_HW_POWER_STATE_D0;
mutex_lock(&self->fwreq_mutex);
err = self->aq_hw_ops->hw_reset(self->aq_hw);
mutex_unlock(&self->fwreq_mutex);
if (err < 0) {
aq_pr_err("HW reset failed, err = %d\n", err);
goto err_exit;
}
/* Restore default settings */
aq_nic_set_downshift(self, self->aq_nic_cfg.downshift_counter);
aq_nic_set_media_detect(self, self->aq_nic_cfg.is_media_detect ?
AQ_HW_MEDIA_DETECT_CNT : 0);
err = self->aq_hw_ops->hw_init(self->aq_hw,
aq_nic_get_ndev(self)->dev_addr);
if (err < 0) {
aq_pr_err("HW init failed, err = %d\n", err);
goto err_exit;
}
if (ATL_HW_IS_CHIP_FEATURE(self->aq_hw, ATLANTIC) &&
self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_TP) {
self->aq_hw->phy_id = HW_ATL_PHY_ID_MAX;
err = aq_phy_init(self->aq_hw);
/* [ATLDRV-742] Workaround for Bermuda:
* Disable PTP block because it can cause data path problems.
* This should be done by PHY provisioning but a lot of units
* with enabled PTP block has been shipped already.
* So, we workaround this issue in the driver.
*/
if (self->aq_nic_cfg.aq_hw_caps->quirks & AQ_NIC_QUIRK_BAD_PTP)
if (self->aq_hw->phy_id != HW_ATL_PHY_ID_MAX)
aq_phy_disable_ptp(self->aq_hw);
}
for (i = 0U; i < self->aq_vecs; i++) {
aq_vec = self->aq_vec[i];
err = aq_vec_ring_alloc(aq_vec, self, i,
aq_nic_get_cfg(self));
if (err) {
aq_pr_err("Vector ring allocation failed, err = %d\n", err);
goto err_exit;
}
aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
}
if (aq_nic_get_cfg(self)->is_ptp) {
u32 ptp_isr_vec, ptp_ext_vec;
if (self->irqvecs > AQ_HW_PTP_IRQS) {
ptp_isr_vec = self->irqvecs - AQ_HW_PTP_IRQS;
ptp_ext_vec = self->irqvecs - AQ_HW_PTP_IRQS + 1U;
} else {
ptp_isr_vec = ptp_ext_vec = 0;
}
err = aq_ptp_init(self, ptp_isr_vec, ptp_ext_vec);
if (err < 0)
goto err_exit;
err = aq_ptp_ring_alloc(self);
if (err < 0)
goto err_exit;
err = aq_ptp_ring_init(self);
if (err < 0)
goto err_exit;
}
netif_carrier_off(self->ndev);
err_exit:
return err;
}
int aq_nic_start(struct aq_nic_s *self)
{
const struct aq_hw_ops *hw_ops;
struct aq_vec_s *aq_vec = NULL;
struct aq_nic_cfg_s *cfg;
unsigned int i = 0U;
int err = 0;
hw_ops = self->aq_hw_ops;
cfg = aq_nic_get_cfg(self);
err = hw_ops->hw_multicast_list_set(self->aq_hw, self->mc_list.ar,
self->mc_list.count);
if (err < 0)
goto err_exit;
err = 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;
}
if (AQ_CFG_UDP_RSS_DISABLE) {
/* HW bug workaround:
* Disable RSS for UDP using rx flow filter.
* HW does not track RSS stream for fragmented UDP,
* 0x5040 control reg does not work.
*/
self->udp_filter.location =
aq_nic_reserve_filter(self, aq_rx_filter_l3l4);
self->udp_filter.cmd = HW_ATL_RX_ENABLE_FLTR_L3L4 |
HW_ATL_RX_ENABLE_CMP_PROT_L4 |
HW_ATL_RX_ENABLE_QUEUE_L3L4 |
HW_ATL_RX_HOST << HW_ATL_RX_ACTION_FL3F4_SHIFT |
HW_ATL_RX_UDP;
if (hw_ops->hw_filter_l3l4_set) {
err = hw_ops->hw_filter_l3l4_set(self->aq_hw,
&self->udp_filter);
}
}
err = aq_apply_all_rule(self);
if (err < 0)
goto err_exit;
err = aq_filters_vlans_update(self);
if (err < 0)
goto err_exit;
err = aq_ptp_ring_start(self);
if (err < 0)
goto err_exit;
aq_nic_set_loopback(self);
err = hw_ops->hw_start(self->aq_hw);
if (err < 0)
goto err_exit;
err = aq_nic_update_interrupt_moderation_settings(self);
if (err)
goto err_exit;
INIT_WORK(&self->service_task, aq_nic_service_task);
aq_nic_set_downshift(self, self->aq_nic_cfg.downshift_counter);
timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0);
aq_nic_service_timer_cb(&self->service_timer);
if (cfg->is_polling) {
timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0);
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, i, self->ndev->name,
aq_vec_isr, aq_vec,
aq_vec_get_affinity_mask(aq_vec));
if (err < 0)
goto err_exit;
}
err = aq_ptp_irq_alloc(self);
if (err < 0)
goto err_exit;
if (cfg->link_irq_vec) {
int irqvec = pci_irq_vector(self->pdev,
cfg->link_irq_vec);
err = request_threaded_irq(irqvec, NULL,
aq_linkstate_threaded_isr,
IRQF_SHARED | IRQF_ONESHOT,
self->ndev->name, self);
if (err < 0)
goto err_exit;
self->msix_entry_mask |= (1 << cfg->link_irq_vec);
}
err = hw_ops->hw_irq_enable(self->aq_hw, AQ_CFG_IRQ_MASK);
if (err < 0)
goto err_exit;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 33)
err = netif_set_real_num_tx_queues(self->ndev,
self->aq_vecs * cfg->tcs);
if (err < 0)
goto err_exit;
err = netif_set_real_num_rx_queues(self->ndev,
self->aq_vecs * cfg->tcs);
if (err < 0)
goto err_exit;
#endif
for (i = 0; i < cfg->tcs; i++) {
u16 offset = self->aq_vecs * i;
netdev_set_tc_queue(self->ndev, i, self->aq_vecs, offset);
}
netif_tx_start_all_queues(self->ndev);
err_exit:
return err;
}
unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb,
struct aq_ring_s *ring)
{
unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
struct device *dev = aq_nic_get_dev(self);
struct aq_ring_buff_s *first = NULL;
u8 ipver = ip_hdr(skb)->version;
struct aq_ring_buff_s *dx_buff;
bool need_context_tag = false;
unsigned int frag_count = 0U;
unsigned int ret = 0U;
unsigned int dx;
u8 l4proto = 0;
trace_aq_dump_skb(skb);
if (ipver == 4)
l4proto = ip_hdr(skb)->protocol;
else if (ipver == 6)
l4proto = ipv6_hdr(skb)->nexthdr;
dx = ring->sw_tail;
dx_buff = &ring->buff_ring[dx];
dx_buff->flags = 0U;
if (unlikely(skb_is_gso(skb))) {
dx_buff->mss = skb_shinfo(skb)->gso_size;
if (l4proto == IPPROTO_TCP) {
dx_buff->is_gso_tcp = 1U;
dx_buff->len_l4 = tcp_hdrlen(skb);
} else if (l4proto == IPPROTO_UDP) {
dx_buff->is_gso_udp = 1U;
dx_buff->len_l4 = sizeof(struct udphdr);
/* UDP GSO Hardware does not replace packet length. */
udp_hdr(skb)->len = htons(dx_buff->mss +
dx_buff->len_l4);
} else {
WARN_ONCE(true, "Bad GSO mode");
goto exit;
}
dx_buff->len_pkt = skb->len;
dx_buff->len_l2 = ETH_HLEN;
dx_buff->len_l3 = skb_network_header_len(skb);
dx_buff->eop_index = 0xffffU;
dx_buff->is_ipv6 = (ipver == 6);
need_context_tag = true;
}
if (cfg->is_vlan_tx_insert && skb_vlan_tag_present(skb)) {
dx_buff->vlan_tx_tag = skb_vlan_tag_get(skb);
dx_buff->len_pkt = skb->len;
dx_buff->is_vlan = 1U;
need_context_tag = true;
}
if (need_context_tag) {
dx = aq_ring_next_dx(ring, dx);
dx_buff = &ring->buff_ring[dx];
dx_buff->flags = 0U;
++ret;
}
dx_buff->len = skb_headlen(skb);
dx_buff->pa = dma_map_single(dev,
skb->data,
dx_buff->len,
DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(dev, dx_buff->pa))) {
ret = 0;
goto exit;
}
first = dx_buff;
dx_buff->len_pkt = skb->len;
dx_buff->is_sop = 1U;
dx_buff->is_mapped = 1U;
++ret;
if (skb->ip_summed == CHECKSUM_PARTIAL) {
dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol);
dx_buff->is_tcp_cso = (l4proto == IPPROTO_TCP);
dx_buff->is_udp_cso = (l4proto == IPPROTO_UDP);
}
for (; nr_frags--; ++frag_count) {
unsigned int frag_len = 0U;
unsigned int buff_offset = 0U;
unsigned int buff_size = 0U;
dma_addr_t frag_pa;
skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
frag_len = skb_frag_size(frag);
while (frag_len) {
if (frag_len > AQ_CFG_TX_FRAME_MAX)
buff_size = AQ_CFG_TX_FRAME_MAX;
else
buff_size = frag_len;
frag_pa = skb_frag_dma_map(dev,
frag,
buff_offset,
buff_size,
DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(dev,
frag_pa)))
goto mapping_error;
dx = aq_ring_next_dx(ring, dx);
dx_buff = &ring->buff_ring[dx];
dx_buff->flags = 0U;
dx_buff->len = buff_size;
dx_buff->pa = frag_pa;
dx_buff->is_mapped = 1U;
dx_buff->eop_index = 0xffffU;
frag_len -= buff_size;
buff_offset += buff_size;
++ret;
}
}
first->eop_index = dx;
dx_buff->is_eop = 1U;
if (skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS &&
self->aq_hw_ops->enable_ptp) {
dx_buff->request_ts = 1U;
dx_buff->clk_sel = self->aq_hw_ops->hw_get_clk_sel(self->aq_hw);
}
dx_buff->skb = skb;
goto exit;
mapping_error:
for (dx = ring->sw_tail;
ret > 0;
--ret, dx = aq_ring_next_dx(ring, dx)) {
dx_buff = &ring->buff_ring[dx];
if (!(dx_buff->is_gso_tcp || dx_buff->is_gso_udp) &&
!dx_buff->is_vlan && dx_buff->pa) {
if (unlikely(dx_buff->is_sop)) {
dma_unmap_single(dev,
dx_buff->pa,
dx_buff->len,
DMA_TO_DEVICE);
} else {
dma_unmap_page(dev,
dx_buff->pa,
dx_buff->len,
DMA_TO_DEVICE);
}
}
}
exit:
return ret;
}
int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
{
struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
unsigned int vec = skb->queue_mapping % cfg->vecs;
unsigned int tc = skb->queue_mapping / cfg->vecs;
struct aq_ring_s *ring = NULL;
unsigned int frags = 0U;
int err = NETDEV_TX_OK;
frags = skb_shinfo(skb)->nr_frags + 1;
ring = self->aq_ring_tx[AQ_NIC_CFG_TCVEC2RING(cfg, tc, vec)];
if (frags > AQ_CFG_SKB_FRAGS_MAX) {
dev_kfree_skb_any(skb);
goto err_exit;
}
aq_ring_update_queue_state(ring);
if (cfg->priv_flags & BIT(AQ_HW_LOOPBACK_DMA_NET)) {
err = NETDEV_TX_BUSY;
goto err_exit;
}
/* Above status update may stop the queue. Check this. */
if (__netif_subqueue_stopped(self->ndev,
AQ_NIC_RING2QMAP(self, ring->idx))) {
err = NETDEV_TX_BUSY;
goto err_exit;
}
frags = aq_nic_map_skb(self, skb, ring);
if (likely(frags)) {
err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
ring, frags);
} else {
err = NETDEV_TX_BUSY;
}
err_exit:
return err;
}
int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
{
return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
}
int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
{
int err = 0;
if (pm_runtime_active(&self->pdev->dev)) {
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)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
#define netdev_hw_addr dev_addr_list
#define addr da_addr
#endif
const struct aq_hw_ops *hw_ops = self->aq_hw_ops;
struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
unsigned int packet_filter = ndev->flags;
struct netdev_hw_addr *ha = NULL;
unsigned int i = 0U;
int err = 0;
self->mc_list.count = 0;
if (netdev_uc_count(ndev) > self->aq_hw->mac_filter_max) {
packet_filter |= IFF_PROMISC;
} else {
netdev_for_each_uc_addr(ha, ndev) {
ether_addr_copy(self->mc_list.ar[i++], ha->addr);
}
}
cfg->is_mc_list_enabled = !!(packet_filter & IFF_MULTICAST);
if (cfg->is_mc_list_enabled) {
if (i + netdev_mc_count(ndev) > self->aq_hw->mac_filter_max) {
packet_filter |= IFF_ALLMULTI;
} else {
netdev_for_each_mc_addr(ha, ndev) {
ether_addr_copy(self->mc_list.ar[i++],
ha->addr);
}
}
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
#undef netdev_hw_addr
#undef addr
#endif
if (i > 0 && i <= self->aq_hw->mac_filter_max) {
self->mc_list.count = i;
if (pm_runtime_active(&self->pdev->dev)) {
err = hw_ops->hw_multicast_list_set(self->aq_hw,
self->mc_list.ar,
self->mc_list.count);
if (err < 0)
return err;
}
}
return aq_nic_set_packet_filter(self, packet_filter);
}
int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
if (new_mtu < ETH_MIN_MTU+ETH_HLEN ||
new_mtu > self->aq_nic_cfg.aq_hw_caps->mtu - ETH_FCS_LEN)
return -EINVAL;
#endif
self->aq_nic_cfg.mtu = new_mtu;
return 0;
}
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);
}