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Date: Tue, 27 Dec 2016 05:17:41 -0800
From: David VomLehn <vomlehn@...as.net>
To: netdev@...r.kernel.org
Cc: Simon Edelhaus <Simon.Edelhaus@...antia.com>,
David VomLehn <vomlehn@...as.net>,
Dmitrii Tarakanov <Dmitrii.Tarakanov@...antia.com>,
Alexander Loktionov <Alexander.Loktionov@...antia.com>
Subject: [PATCH 05/12] Support for NIC-specific code
Add support for code specific to the Atlantic NIC.
Signed-off-by: Dmitrii Tarakanov <Dmitrii.Tarakanov@...antia.com>
Signed-off-by: Alexander Loktionov <Alexander.Loktionov@...antia.com>
Signed-off-by: David M. VomLehn <vomlehn@...as.net>
---
drivers/net/ethernet/aquantia/atlantic/aq_nic.c | 993 +++++++++++++++++++++
drivers/net/ethernet/aquantia/atlantic/aq_nic.h | 111 +++
.../ethernet/aquantia/atlantic/aq_nic_internal.h | 48 +
3 files changed, 1152 insertions(+)
create mode 100644 drivers/net/ethernet/aquantia/atlantic/aq_nic.c
create mode 100644 drivers/net/ethernet/aquantia/atlantic/aq_nic.h
create mode 100644 drivers/net/ethernet/aquantia/atlantic/aq_nic_internal.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 0000000..bc4c672
--- /dev/null
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
@@ -0,0 +1,993 @@
+//err_exit:
+//err_exit:
+/*
+ * Aquantia Corporation Network Driver
+ * Copyright (C) 2014-2016 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_vec.h"
+#include "aq_ring.h"
+#include "aq_hw.h"
+#include "aq_pci_func.h"
+#include "aq_rss.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>
+
+/*
+ * Fills aq_nic_cfg with valid defaults
+ */
+static int aq_nic_cfg_init_defaults(struct aq_nic_s *self)
+{
+ struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+ int err = 0;
+
+ 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->vlan_id = 0U;
+
+ err = aq_nic_rss_init(self, cfg->num_rss_queues);
+ if (err < 0)
+ goto err_exit;
+
+err_exit:
+ return err;
+}
+
+/*
+ * 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->irq_type = aq_pci_func_get_irq_type(self->aq_pci_func);
+
+ if ((cfg->irq_type == AQ_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;
+
+ return 0;
+}
+
+static int aq_nic_cfg_read(struct aq_nic_s *self)
+{
+ return 0;
+}
+
+static int aq_nic_cfg_check(struct aq_nic_s *self)
+{
+ return 0;
+}
+
+int 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_receive_scale_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);
+ return 0;
+}
+
+static void aq_nic_service_timer_cb(unsigned long param)
+{
+ struct aq_nic_s *self = (struct aq_nic_s *)param;
+ int err = 0;
+ bool is_busy = false;
+ struct aq_hw_link_status_s link_status;
+
+ atomic_inc(&self->busy_count);
+ is_busy = true;
+ if (AQ_OBJ_TST(self, AQ_NIC_FLAGS_IS_NOT_READY)) {
+ err = -EFAULT;
+ goto err_exit;
+ }
+ err = self->aq_hw_ops.hw_get_link_status(self->aq_hw, &link_status);
+ 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 (memcmp(&link_status, &self->link_status, sizeof(link_status))) {
+ if (link_status.bps) {
+ AQ_OBJ_SET(self, AQ_NIC_FLAG_STARTED);
+ AQ_OBJ_CLR(self, AQ_NIC_LINK_DOWN);
+ netif_carrier_on(self->ndev);
+ } else {
+ netif_carrier_off(self->ndev);
+ AQ_OBJ_SET(self, AQ_NIC_LINK_DOWN);
+ }
+
+ self->link_status = link_status;
+ }
+
+err_exit:
+ if (is_busy)
+ atomic_dec(&self->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);
+}
+
+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 = (struct aq_nic_s *)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;
+
+ err = aq_nic_cfg_init_defaults(self);
+ if (err < 0)
+ goto err_exit;
+
+ err = aq_nic_cfg_check(self);
+ if (err < 0)
+ goto err_exit;
+
+ err = aq_nic_cfg_read(self);
+
+ if (err >= 0) {
+ err = aq_nic_cfg_check(self);
+ if (err < 0)
+ goto err_exit;
+ }
+
+ if (err < 0) {
+ err = aq_nic_cfg_init_defaults(self);
+ if (err < 0)
+ goto err_exit;
+ }
+
+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->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;
+}
+
+struct net_device *aq_nic_ndev_alloc(void)
+{
+ struct net_device *ndev = NULL;
+ int err = 0;
+
+ ndev = alloc_etherdev_mq(sizeof(struct aq_nic_s), AQ_CFG_VECS_MAX);
+ if (!ndev) {
+ err = -EINVAL;
+ goto err_exit;
+ }
+
+err_exit:
+ (void)err;
+ return ndev;
+}
+
+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->features = aq_hw_caps->hw_features;
+ self->ndev->hw_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)
+{
+ int err = 0;
+
+ if (!self->ndev) {
+ err = -EINVAL;
+ 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:;
+ (void)err;
+}
+
+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 = (struct aq_nic_s *)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)
+{
+ unsigned int ret = 0U;
+
+ 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;
+ ret = 1U;
+
+ return ret;
+}
+
+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)
+{
+ 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;
+ int err = 0;
+ bool is_nic_in_bad_state;
+ bool is_locked = false;
+ 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->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_OBJ_TST(self, 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;
+ }
+
+ {
+ unsigned int trys = AQ_CFG_LOCK_TRYS;
+
+ frags = aq_nic_map_skb(self, skb, &buffers[0]);
+
+ do {
+ is_locked = spin_trylock(&ring->lock);
+ } while (--trys && !is_locked);
+ if (!(is_locked)) {
+ err = NETDEV_TX_BUSY;
+ goto err_exit;
+ }
+
+ 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)
+ goto err_exit;
+ }
+
+ if (aq_ring_avail_dx(ring) < AQ_CFG_SKB_FRAGS_MAX + 1)
+ aq_nic_ndev_queue_stop(self, ring->idx);
+
+ spin_unlock(&ring->lock);
+
+ atomic_dec(&self->busy_count);
+
+err_exit:
+ if (err < 0) {
+ if (is_busy)
+ atomic_dec(&self->busy_count);
+
+ if (is_locked)
+ spin_unlock(&ring->lock);
+ }
+ 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;
+ int err = 0;
+
+ 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;
+ }
+
+ 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_exit:
+ return err;
+}
+
+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 = 0;
+ 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.bps / 1000000;
+}
+
+int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
+{
+ u32 *regs_buff = p;
+ int err = 0;
+ struct aq_hw_caps_s caps;
+
+ regs->version = 1;
+
+ err = self->aq_hw_ops.get_hw_caps(self->aq_hw, &caps);
+ if (err < 0)
+ goto err_exit;
+
+ err = self->aq_hw_ops.hw_get_regs(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)
+{
+ int err = 0;
+ struct aq_hw_caps_s caps;
+
+ cmd->autoneg = self->aq_nic_cfg.is_autoneg;
+
+ err = self->aq_hw_ops.get_hw_caps(self->aq_hw, &caps);
+ if (err < 0)
+ goto err_exit;
+
+ cmd->supported |= (caps.link_speed_msk & AQ_NIC_RATE_10G) ?
+ ADVERTISED_10000baseT_Full : 0U;
+ cmd->supported |= (caps.link_speed_msk & AQ_NIC_RATE_1G) ?
+ ADVERTISED_1000baseT_Full : 0U;
+ cmd->supported |= (caps.link_speed_msk & AQ_NIC_RATE_100M) ?
+ ADVERTISED_100baseT_Full : 0U;
+ cmd->supported |= 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;
+
+err_exit:;
+ (void)err;
+}
+
+int aq_nic_set_link_settings(struct aq_nic_s *self, struct ethtool_cmd *cmd)
+{
+ u32 speed = 0U;
+ u32 rate = 0U;
+ int err = 0;
+ struct aq_hw_caps_s caps;
+
+ err = self->aq_hw_ops.get_hw_caps(self->aq_hw, &caps);
+ if (err < 0)
+ goto err_exit;
+
+ if (cmd->autoneg == AUTONEG_ENABLE) {
+ rate = 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 (!(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;
+ int err = 0;
+ 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);
+
+ err = 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);
+
+ err = self->aq_hw_ops.hw_stop(self->aq_hw);
+
+ return err;
+}
+
+int aq_nic_deinit(struct aq_nic_s *self)
+{
+ struct aq_vec_s *aq_vec = NULL;
+ int err = 0;
+ 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_deinit(aq_vec);
+
+ if (self->power_state == AQ_HW_POWER_STATE_D0)
+ err = self->aq_hw_ops.hw_deinit(self->aq_hw);
+ else
+ err = self->aq_hw_ops.hw_set_power(self->aq_hw,
+ self->power_state);
+
+ return err;
+}
+
+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;
+ }
+ 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;
+
+ err = aq_nic_deinit(self);
+ if (err < 0)
+ goto err_exit;
+ } 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);
+ }
+
+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 0000000..89958e7
--- /dev/null
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.h
@@ -0,0 +1,111 @@
+/*
+ * Aquantia Corporation Network Driver
+ * Copyright (C) 2014-2016 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: 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;
+ u8 tcs;
+ struct aq_receive_scale_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);
+struct net_device *aq_nic_ndev_alloc(void);
+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);
+int aq_nic_deinit(struct aq_nic_s *self);
+void aq_nic_free_hot_resources(struct aq_nic_s *self);
+int aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues);
+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 0000000..6f27816
--- /dev/null
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic_internal.h
@@ -0,0 +1,48 @@
+/*
+ * Aquantia Corporation Network Driver
+ * Copyright (C) 2014-2016 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 {
+ AQ_OBJ_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 */
--
2.7.4
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