Commit 970a2e98 authored by David VomLehn's avatar David VomLehn Committed by David S. Miller

net: ethernet: aquantia: Vector operations

Add functions to manululate the vector of receive and transmit rings.
Signed-off-by: default avatarAlexander Loktionov <Alexander.Loktionov@aquantia.com>
Signed-off-by: default avatarDmitrii Tarakanov <Dmitrii.Tarakanov@aquantia.com>
Signed-off-by: default avatarPavel.Belous <Pavel.Belous@aquantia.com>
Signed-off-by: default avatarDmitry Bezrukov <Dmitry.Bezrukov@aquantia.com>
Signed-off-by: default avatarDavid M. VomLehn <vomlehn@texas.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bab6de8f
/*
* 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_vec.c: Definition of common structure for vector of Rx and Tx rings.
* Definition of functions for Rx and Tx rings. Friendly module for aq_nic.
*/
#include "aq_vec.h"
#include "aq_nic.h"
#include "aq_ring.h"
#include "aq_hw.h"
#include <linux/netdevice.h>
struct aq_vec_s {
struct aq_obj_s header;
struct aq_hw_ops *aq_hw_ops;
struct aq_hw_s *aq_hw;
struct aq_nic_s *aq_nic;
unsigned int tx_rings;
unsigned int rx_rings;
struct aq_ring_param_s aq_ring_param;
struct napi_struct napi;
struct aq_ring_s ring[AQ_CFG_TCS_MAX][2];
};
#define AQ_VEC_TX_ID 0
#define AQ_VEC_RX_ID 1
static int aq_vec_poll(struct napi_struct *napi, int budget)
__releases(&self->lock)
__acquires(&self->lock)
{
struct aq_vec_s *self = container_of(napi, struct aq_vec_s, napi);
struct aq_ring_s *ring = NULL;
int work_done = 0;
int err = 0;
unsigned int i = 0U;
unsigned int sw_tail_old = 0U;
bool was_tx_cleaned = false;
if (!self) {
err = -EINVAL;
} else if (spin_trylock(&self->header.lock)) {
for (i = 0U, ring = self->ring[0];
self->tx_rings > i; ++i, ring = self->ring[i]) {
if (self->aq_hw_ops->hw_ring_tx_head_update) {
err = self->aq_hw_ops->hw_ring_tx_head_update(
self->aq_hw,
&ring[AQ_VEC_TX_ID]);
if (err < 0)
goto err_exit;
}
if (ring[AQ_VEC_TX_ID].sw_head !=
ring[AQ_VEC_TX_ID].hw_head) {
err = aq_ring_tx_clean(&ring[AQ_VEC_TX_ID]);
if (err < 0)
goto err_exit;
was_tx_cleaned = true;
}
err = self->aq_hw_ops->hw_ring_rx_receive(self->aq_hw,
&ring[AQ_VEC_RX_ID]);
if (err < 0)
goto err_exit;
if (ring[AQ_VEC_RX_ID].sw_head !=
ring[AQ_VEC_RX_ID].hw_head) {
err = aq_ring_rx_clean(&ring[AQ_VEC_RX_ID],
&work_done,
budget - work_done);
if (err < 0)
goto err_exit;
sw_tail_old = ring[AQ_VEC_RX_ID].sw_tail;
err = aq_ring_rx_fill(&ring[AQ_VEC_RX_ID]);
if (err < 0)
goto err_exit;
err = self->aq_hw_ops->hw_ring_rx_fill(
self->aq_hw,
&ring[AQ_VEC_RX_ID], sw_tail_old);
if (err < 0)
goto err_exit;
}
}
if (was_tx_cleaned)
work_done = budget;
if (work_done < budget) {
napi_complete(napi);
self->aq_hw_ops->hw_irq_enable(self->aq_hw,
1U << self->aq_ring_param.vec_idx);
}
err_exit:
spin_unlock(&self->header.lock);
}
return work_done;
}
struct aq_vec_s *aq_vec_alloc(struct aq_nic_s *aq_nic, unsigned int idx,
struct aq_nic_cfg_s *aq_nic_cfg)
{
struct aq_vec_s *self = NULL;
struct aq_ring_s *ring = NULL;
unsigned int i = 0U;
int err = 0;
self = kzalloc(sizeof(*self), GFP_KERNEL);
if (!self) {
err = -ENOMEM;
goto err_exit;
}
self->aq_nic = aq_nic;
self->aq_ring_param.vec_idx = idx;
self->aq_ring_param.cpu =
idx + aq_nic_cfg->aq_rss.base_cpu_number;
cpumask_set_cpu(self->aq_ring_param.cpu,
&self->aq_ring_param.affinity_mask);
self->tx_rings = 0;
self->rx_rings = 0;
netif_napi_add(aq_nic_get_ndev(aq_nic), &self->napi,
aq_vec_poll, AQ_CFG_NAPI_WEIGHT);
for (i = 0; i < aq_nic_cfg->tcs; ++i) {
unsigned int idx_ring = AQ_NIC_TCVEC2RING(self->nic,
self->tx_rings,
self->aq_ring_param.vec_idx);
ring = aq_ring_tx_alloc(&self->ring[i][AQ_VEC_TX_ID], aq_nic,
idx_ring, aq_nic_cfg);
if (!ring) {
err = -ENOMEM;
goto err_exit;
}
++self->tx_rings;
aq_nic_set_tx_ring(aq_nic, idx_ring, ring);
ring = aq_ring_rx_alloc(&self->ring[i][AQ_VEC_RX_ID], aq_nic,
idx_ring, aq_nic_cfg);
if (!ring) {
err = -ENOMEM;
goto err_exit;
}
++self->rx_rings;
}
err_exit:
if (err < 0) {
aq_vec_free(self);
self = NULL;
}
return self;
}
int aq_vec_init(struct aq_vec_s *self, struct aq_hw_ops *aq_hw_ops,
struct aq_hw_s *aq_hw)
{
struct aq_ring_s *ring = NULL;
unsigned int i = 0U;
int err = 0;
self->aq_hw_ops = aq_hw_ops;
self->aq_hw = aq_hw;
spin_lock_init(&self->header.lock);
for (i = 0U, ring = self->ring[0];
self->tx_rings > i; ++i, ring = self->ring[i]) {
err = aq_ring_init(&ring[AQ_VEC_TX_ID]);
if (err < 0)
goto err_exit;
err = self->aq_hw_ops->hw_ring_tx_init(self->aq_hw,
&ring[AQ_VEC_TX_ID],
&self->aq_ring_param);
if (err < 0)
goto err_exit;
err = aq_ring_init(&ring[AQ_VEC_RX_ID]);
if (err < 0)
goto err_exit;
err = self->aq_hw_ops->hw_ring_rx_init(self->aq_hw,
&ring[AQ_VEC_RX_ID],
&self->aq_ring_param);
if (err < 0)
goto err_exit;
err = aq_ring_rx_fill(&ring[AQ_VEC_RX_ID]);
if (err < 0)
goto err_exit;
err = self->aq_hw_ops->hw_ring_rx_fill(self->aq_hw,
&ring[AQ_VEC_RX_ID], 0U);
if (err < 0)
goto err_exit;
}
err_exit:
return err;
}
int aq_vec_start(struct aq_vec_s *self)
{
struct aq_ring_s *ring = NULL;
unsigned int i = 0U;
int err = 0;
for (i = 0U, ring = self->ring[0];
self->tx_rings > i; ++i, ring = self->ring[i]) {
err = self->aq_hw_ops->hw_ring_tx_start(self->aq_hw,
&ring[AQ_VEC_TX_ID]);
if (err < 0)
goto err_exit;
err = self->aq_hw_ops->hw_ring_rx_start(self->aq_hw,
&ring[AQ_VEC_RX_ID]);
if (err < 0)
goto err_exit;
}
napi_enable(&self->napi);
err_exit:
return err;
}
void aq_vec_stop(struct aq_vec_s *self)
{
struct aq_ring_s *ring = NULL;
unsigned int i = 0U;
for (i = 0U, ring = self->ring[0];
self->tx_rings > i; ++i, ring = self->ring[i]) {
self->aq_hw_ops->hw_ring_tx_stop(self->aq_hw,
&ring[AQ_VEC_TX_ID]);
self->aq_hw_ops->hw_ring_rx_stop(self->aq_hw,
&ring[AQ_VEC_RX_ID]);
}
napi_disable(&self->napi);
}
void aq_vec_deinit(struct aq_vec_s *self)
{
struct aq_ring_s *ring = NULL;
unsigned int i = 0U;
if (!self)
goto err_exit;
for (i = 0U, ring = self->ring[0];
self->tx_rings > i; ++i, ring = self->ring[i]) {
aq_ring_tx_deinit(&ring[AQ_VEC_TX_ID]);
aq_ring_rx_deinit(&ring[AQ_VEC_RX_ID]);
}
err_exit:;
}
void aq_vec_free(struct aq_vec_s *self)
{
struct aq_ring_s *ring = NULL;
unsigned int i = 0U;
if (!self)
goto err_exit;
for (i = 0U, ring = self->ring[0];
self->tx_rings > i; ++i, ring = self->ring[i]) {
aq_ring_free(&ring[AQ_VEC_TX_ID]);
aq_ring_free(&ring[AQ_VEC_RX_ID]);
}
netif_napi_del(&self->napi);
kfree(self);
err_exit:;
}
irqreturn_t aq_vec_isr(int irq, void *private)
{
struct aq_vec_s *self = private;
int err = 0;
if (!self) {
err = -EINVAL;
goto err_exit;
}
napi_schedule(&self->napi);
err_exit:
return err >= 0 ? IRQ_HANDLED : IRQ_NONE;
}
irqreturn_t aq_vec_isr_legacy(int irq, void *private)
{
struct aq_vec_s *self = private;
u64 irq_mask = 0U;
irqreturn_t err = 0;
if (!self) {
err = -EINVAL;
goto err_exit;
}
err = self->aq_hw_ops->hw_irq_read(self->aq_hw, &irq_mask);
if (err < 0)
goto err_exit;
if (irq_mask) {
self->aq_hw_ops->hw_irq_disable(self->aq_hw,
1U << self->aq_ring_param.vec_idx);
napi_schedule(&self->napi);
} else {
self->aq_hw_ops->hw_irq_enable(self->aq_hw, 1U);
err = IRQ_NONE;
}
err_exit:
return err >= 0 ? IRQ_HANDLED : IRQ_NONE;
}
cpumask_t *aq_vec_get_affinity_mask(struct aq_vec_s *self)
{
return &self->aq_ring_param.affinity_mask;
}
void aq_vec_add_stats(struct aq_vec_s *self,
struct aq_ring_stats_rx_s *stats_rx,
struct aq_ring_stats_tx_s *stats_tx)
{
struct aq_ring_s *ring = NULL;
unsigned int r = 0U;
for (r = 0U, ring = self->ring[0];
self->tx_rings > r; ++r, ring = self->ring[r]) {
struct aq_ring_stats_tx_s *tx = &ring[AQ_VEC_TX_ID].stats.tx;
struct aq_ring_stats_rx_s *rx = &ring[AQ_VEC_RX_ID].stats.rx;
stats_rx->packets += rx->packets;
stats_rx->bytes += rx->bytes;
stats_rx->errors += rx->errors;
stats_rx->jumbo_packets += rx->jumbo_packets;
stats_rx->lro_packets += rx->lro_packets;
stats_tx->packets += tx->packets;
stats_tx->bytes += tx->bytes;
stats_tx->errors += tx->errors;
}
}
int aq_vec_get_sw_stats(struct aq_vec_s *self, u64 *data, unsigned int *p_count)
{
unsigned int count = 0U;
struct aq_ring_stats_rx_s stats_rx;
struct aq_ring_stats_tx_s stats_tx;
memset(&stats_rx, 0U, sizeof(struct aq_ring_stats_rx_s));
memset(&stats_tx, 0U, sizeof(struct aq_ring_stats_tx_s));
aq_vec_add_stats(self, &stats_rx, &stats_tx);
data[count] += stats_rx.packets;
data[++count] += stats_tx.packets;
data[++count] += stats_rx.jumbo_packets;
data[++count] += stats_rx.lro_packets;
data[++count] += stats_rx.errors;
if (p_count)
*p_count = ++count;
return 0;
}
/*
* 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_vec.h: Definition of common structures for vector of Rx and Tx rings.
* Declaration of functions for Rx and Tx rings.
*/
#ifndef AQ_VEC_H
#define AQ_VEC_H
#include "aq_common.h"
#include <linux/irqreturn.h>
struct aq_hw_s;
struct aq_hw_ops;
struct aq_ring_stats_rx_s;
struct aq_ring_stats_tx_s;
irqreturn_t aq_vec_isr(int irq, void *private);
irqreturn_t aq_vec_isr_legacy(int irq, void *private);
struct aq_vec_s *aq_vec_alloc(struct aq_nic_s *aq_nic, unsigned int idx,
struct aq_nic_cfg_s *aq_nic_cfg);
int aq_vec_init(struct aq_vec_s *self, struct aq_hw_ops *aq_hw_ops,
struct aq_hw_s *aq_hw);
void aq_vec_deinit(struct aq_vec_s *self);
void aq_vec_free(struct aq_vec_s *self);
int aq_vec_start(struct aq_vec_s *self);
void aq_vec_stop(struct aq_vec_s *self);
cpumask_t *aq_vec_get_affinity_mask(struct aq_vec_s *self);
int aq_vec_get_sw_stats(struct aq_vec_s *self, u64 *data,
unsigned int *p_count);
void aq_vec_add_stats(struct aq_vec_s *self,
struct aq_ring_stats_rx_s *stats_rx,
struct aq_ring_stats_tx_s *stats_tx);
#endif /* AQ_VEC_H */
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