From 970a2e9864b0ba45f639aebf464a5edcaabb5be0 Mon Sep 17 00:00:00 2001 From: David VomLehn Date: Mon, 23 Jan 2017 22:09:14 -0800 Subject: [PATCH] net: ethernet: aquantia: Vector operations Add functions to manululate the vector of receive and transmit rings. Signed-off-by: Alexander Loktionov Signed-off-by: Dmitrii Tarakanov Signed-off-by: Pavel.Belous Signed-off-by: Dmitry Bezrukov Signed-off-by: David M. VomLehn Signed-off-by: David S. Miller --- .../net/ethernet/aquantia/atlantic/aq_vec.c | 392 ++++++++++++++++++ .../net/ethernet/aquantia/atlantic/aq_vec.h | 42 ++ 2 files changed, 434 insertions(+) create mode 100644 drivers/net/ethernet/aquantia/atlantic/aq_vec.c create mode 100644 drivers/net/ethernet/aquantia/atlantic/aq_vec.h diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_vec.c b/drivers/net/ethernet/aquantia/atlantic/aq_vec.c new file mode 100644 index 000000000000..140962f23e61 --- /dev/null +++ b/drivers/net/ethernet/aquantia/atlantic/aq_vec.c @@ -0,0 +1,392 @@ +/* + * 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 + +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; +} diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_vec.h b/drivers/net/ethernet/aquantia/atlantic/aq_vec.h new file mode 100644 index 000000000000..6c68b184236c --- /dev/null +++ b/drivers/net/ethernet/aquantia/atlantic/aq_vec.h @@ -0,0 +1,42 @@ +/* + * 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 + +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 */ -- 2.30.2