Merge branch 'aquantia'

David VomLehn says:

====================
net: ethernet: aquantia: Add AQtion 2.5/5 GB NIC driver

This series introduces the AQtion NIC driver for the aQuantia
AQC107/AQC108 network devices.

v1: Initial version
v2: o Make necessary drivers/net/ethernet changes to integrate software
    o Drop intermediate atlantic directory
    o Remove Makefile things only appropriate to out of tree module
      building
v3: o Move changes to drivers/net/ethernet/{Kconfig,Makefile} to the last
      patch to ensure clean bisection.
    o Removed inline attribute aq_hw_write_req() as it was defined in
      only one .c file.
    o #included pci.h in aq_common.h to get struct pci definition.
    o Modified code to unlock based execution flow rather than using a
      flag.
    o Made a number of functions that were only used in a single file
      static.
    o Cleaned up error and return code handling in various places.
    o Remove AQ_CFG_IP_ALIGN definition.
    o Other minor code clean up.
v4: o Using do_div for 64 bit division.
    o Modified NIC statistics code.
    o Using build_skb instead netdev_alloc_skb for single fragment packets.
    o Removed extra aq_nic.o from Makefile
v5: o Removed extra newline at the end of the files.
v6: o Removed unnecessary cast from void*.
    o Reworked strings array for ethtool statistics.
    o Added stringset == ETH_SS_STATS checking.
    o AQ_OBJ_HEADER replaced to aq_obj_header_s struct.
    o AQ_OBJ_SET/TST/CLR macroses replaced to inline functions.
    o Driver sources placed in to atlantic directory.
    o Fixed compilation warnings (Make W=1)
    o Added firmware version checking.
    o Code cleaning.
v7  o Removed unnecessary cast from memory allocation function (aq_ring.c).
v8  o Switched to using kcalloc instead kzalloc.
    o Now provide bus_info for ethtool
    o Used div() to avoid __bad_udelay build error.
Signed-off-by: NAlexander Loktionov <Alexander.Loktionov@aquantia.com>
Signed-off-by: NDmitrii Tarakanov <Dmitrii.Tarakanov@aquantia.com>
Signed-off-by: NPavel Belous <Pavel.Belous@aquantia.com>
Signed-off-by: NDavid M. VomLehn <vomlehn@texas.net>
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/Kconfig

@@ -29,6 +29,7 @@ source "drivers/net/ethernet/amazon/Kconfig"
 source "drivers/net/ethernet/amd/Kconfig"
 source "drivers/net/ethernet/apm/Kconfig"
 source "drivers/net/ethernet/apple/Kconfig"
+source "drivers/net/ethernet/aquantia/Kconfig"
 source "drivers/net/ethernet/arc/Kconfig"
 source "drivers/net/ethernet/atheros/Kconfig"
 source "drivers/net/ethernet/aurora/Kconfig"

drivers/net/ethernet/Makefile

@@ -15,6 +15,7 @@ obj-$(CONFIG_NET_VENDOR_AMAZON) += amazon/
 obj-$(CONFIG_NET_VENDOR_AMD) += amd/
 obj-$(CONFIG_NET_XGENE) += apm/
 obj-$(CONFIG_NET_VENDOR_APPLE) += apple/
+obj-$(CONFIG_NET_VENDOR_AQUANTIA) += aquantia/
 obj-$(CONFIG_NET_VENDOR_ARC) += arc/
 obj-$(CONFIG_NET_VENDOR_ATHEROS) += atheros/
 obj-$(CONFIG_NET_VENDOR_AURORA) += aurora/

drivers/net/ethernet/aquantia/Kconfig

+#
+# aQuantia device configuration
+#
+
+config NET_VENDOR_AQUANTIA
+	bool "aQuantia devices"
+	default y
+	---help---
+	  Set this to y if you have an Ethernet network cards that uses the aQuantia
+	  AQC107/AQC108 chipset.
+
+	  This option does not build any drivers; it casues the aQuantia
+	  drivers that can be built to appear in the list of Ethernet drivers.
+
+
+if NET_VENDOR_AQUANTIA
+
+config AQTION
+	tristate "aQuantia AQtion(tm) Support"
+	depends on PCI && X86_64
+	---help---
+	  This enables the support for the aQuantia AQtion(tm) Ethernet card.
+
+endif # NET_VENDOR_AQUANTIA

drivers/net/ethernet/aquantia/Makefile

+#
+# Makefile for the aQuantia device drivers.
+#
+
+obj-$(CONFIG_AQTION) += atlantic/

drivers/net/ethernet/aquantia/atlantic/Makefile

+################################################################################
+#
+# aQuantia Ethernet Controller AQtion Linux Driver
+# Copyright(c) 2014-2017 aQuantia Corporation.
+#
+# 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.
+#
+# This program is distributed in the hope it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# The full GNU General Public License is included in this distribution in
+# the file called "COPYING".
+#
+# Contact Information: <rdc-drv@aquantia.com>
+# aQuantia Corporation, 105 E. Tasman Dr. San Jose, CA 95134, USA
+#
+################################################################################
+
+#
+# Makefile for the AQtion(tm) Ethernet driver
+#
+
+obj-$(CONFIG_AQTION) += atlantic.o
+
+atlantic-objs := aq_main.o \
+	aq_nic.o \
+	aq_pci_func.o \
+	aq_vec.o \
+	aq_ring.o \
+	aq_hw_utils.o \
+	aq_ethtool.o \
+	hw_atl/hw_atl_a0.o \
+	hw_atl/hw_atl_b0.o \
+	hw_atl/hw_atl_utils.o \
+	hw_atl/hw_atl_llh.o

drivers/net/ethernet/aquantia/atlantic/aq_cfg.h

+/*
+ * 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_cfg.h: Definition of configuration parameters and constants. */
+
+#ifndef AQ_CFG_H
+#define AQ_CFG_H
+
+#define AQ_CFG_VECS_DEF   4U
+#define AQ_CFG_TCS_DEF    1U
+
+#define AQ_CFG_TXDS_DEF    4096U
+#define AQ_CFG_RXDS_DEF    1024U
+
+#define AQ_CFG_IS_POLLING_DEF 0U
+
+#define AQ_CFG_FORCE_LEGACY_INT 0U
+
+#define AQ_CFG_IS_INTERRUPT_MODERATION_DEF   1U
+#define AQ_CFG_INTERRUPT_MODERATION_RATE_DEF 0xFFFFU
+#define AQ_CFG_IRQ_MASK                      0x1FFU
+
+#define AQ_CFG_VECS_MAX   8U
+#define AQ_CFG_TCS_MAX    8U
+
+#define AQ_CFG_TX_FRAME_MAX  (16U * 1024U)
+#define AQ_CFG_RX_FRAME_MAX  (4U * 1024U)
+
+/* LRO */
+#define AQ_CFG_IS_LRO_DEF           1U
+
+/* RSS */
+#define AQ_CFG_RSS_INDIRECTION_TABLE_MAX  128U
+#define AQ_CFG_RSS_HASHKEY_SIZE           320U
+
+#define AQ_CFG_IS_RSS_DEF           1U
+#define AQ_CFG_NUM_RSS_QUEUES_DEF   AQ_CFG_VECS_DEF
+#define AQ_CFG_RSS_BASE_CPU_NUM_DEF 0U
+
+#define AQ_CFG_PCI_FUNC_MSIX_IRQS   9U
+#define AQ_CFG_PCI_FUNC_PORTS       2U
+
+#define AQ_CFG_SERVICE_TIMER_INTERVAL    (2 * HZ)
+#define AQ_CFG_POLLING_TIMER_INTERVAL   ((unsigned int)(2 * HZ))
+
+#define AQ_CFG_SKB_FRAGS_MAX   32U
+
+#define AQ_CFG_NAPI_WEIGHT     64U
+
+#define AQ_CFG_MULTICAST_ADDRESS_MAX     32U
+
+/*#define AQ_CFG_MAC_ADDR_PERMANENT {0x30, 0x0E, 0xE3, 0x12, 0x34, 0x56}*/
+
+#define AQ_CFG_FC_MODE 3U
+
+#define AQ_CFG_SPEED_MSK  0xFFFFU	/* 0xFFFFU==auto_neg */
+
+#define AQ_CFG_IS_AUTONEG_DEF       1U
+#define AQ_CFG_MTU_DEF              1514U
+
+#define AQ_CFG_LOCK_TRYS   100U
+
+#define AQ_CFG_DRV_AUTHOR      "aQuantia"
+#define AQ_CFG_DRV_DESC        "aQuantia Corporation(R) Network Driver"
+#define AQ_CFG_DRV_NAME        "aquantia"
+#define AQ_CFG_DRV_VERSION	__stringify(NIC_MAJOR_DRIVER_VERSION)"."\
+				__stringify(NIC_MINOR_DRIVER_VERSION)"."\
+				__stringify(NIC_BUILD_DRIVER_VERSION)"."\
+				__stringify(NIC_REVISION_DRIVER_VERSION)
+
+#endif /* AQ_CFG_H */

drivers/net/ethernet/aquantia/atlantic/aq_common.h

+/*
+ * 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_common.h: Basic includes for all files in project. */
+
+#ifndef AQ_COMMON_H
+#define AQ_COMMON_H
+
+#include <linux/etherdevice.h>
+#include <linux/pci.h>
+
+#include "ver.h"
+#include "aq_nic.h"
+#include "aq_cfg.h"
+#include "aq_utils.h"
+
+#endif /* AQ_COMMON_H */

drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c

+/*
+ * 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_ethtool.c: Definition of ethertool related functions. */
+
+#include "aq_ethtool.h"
+#include "aq_nic.h"
+
+static void aq_ethtool_get_regs(struct net_device *ndev,
+				struct ethtool_regs *regs, void *p)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	u32 regs_count = aq_nic_get_regs_count(aq_nic);
+
+	memset(p, 0, regs_count * sizeof(u32));
+	aq_nic_get_regs(aq_nic, regs, p);
+}
+
+static int aq_ethtool_get_regs_len(struct net_device *ndev)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	u32 regs_count = aq_nic_get_regs_count(aq_nic);
+
+	return regs_count * sizeof(u32);
+}
+
+static u32 aq_ethtool_get_link(struct net_device *ndev)
+{
+	return ethtool_op_get_link(ndev);
+}
+
+static int aq_ethtool_get_settings(struct net_device *ndev,
+				   struct ethtool_cmd *cmd)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+
+	aq_nic_get_link_settings(aq_nic, cmd);
+	ethtool_cmd_speed_set(cmd, netif_carrier_ok(ndev) ?
+				aq_nic_get_link_speed(aq_nic) : 0U);
+
+	return 0;
+}
+
+static int aq_ethtool_set_settings(struct net_device *ndev,
+				   struct ethtool_cmd *cmd)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+
+	return aq_nic_set_link_settings(aq_nic, cmd);
+}
+
+/* there "5U" is number of queue[#] stats lines (InPackets+...+InErrors) */
+static const unsigned int aq_ethtool_stat_queue_lines = 5U;
+static const unsigned int aq_ethtool_stat_queue_chars =
+	5U * ETH_GSTRING_LEN;
+static const char aq_ethtool_stat_names[][ETH_GSTRING_LEN] = {
+	"InPackets",
+	"InUCast",
+	"InMCast",
+	"InBCast",
+	"InErrors",
+	"OutPackets",
+	"OutUCast",
+	"OutMCast",
+	"OutBCast",
+	"InUCastOctects",
+	"OutUCastOctects",
+	"InMCastOctects",
+	"OutMCastOctects",
+	"InBCastOctects",
+	"OutBCastOctects",
+	"InOctects",
+	"OutOctects",
+	"InPacketsDma",
+	"OutPacketsDma",
+	"InOctetsDma",
+	"OutOctetsDma",
+	"InDroppedDma",
+	"Queue[0] InPackets",
+	"Queue[0] OutPackets",
+	"Queue[0] InJumboPackets",
+	"Queue[0] InLroPackets",
+	"Queue[0] InErrors",
+	"Queue[1] InPackets",
+	"Queue[1] OutPackets",
+	"Queue[1] InJumboPackets",
+	"Queue[1] InLroPackets",
+	"Queue[1] InErrors",
+	"Queue[2] InPackets",
+	"Queue[2] OutPackets",
+	"Queue[2] InJumboPackets",
+	"Queue[2] InLroPackets",
+	"Queue[2] InErrors",
+	"Queue[3] InPackets",
+	"Queue[3] OutPackets",
+	"Queue[3] InJumboPackets",
+	"Queue[3] InLroPackets",
+	"Queue[3] InErrors",
+	"Queue[4] InPackets",
+	"Queue[4] OutPackets",
+	"Queue[4] InJumboPackets",
+	"Queue[4] InLroPackets",
+	"Queue[4] InErrors",
+	"Queue[5] InPackets",
+	"Queue[5] OutPackets",
+	"Queue[5] InJumboPackets",
+	"Queue[5] InLroPackets",
+	"Queue[5] InErrors",
+	"Queue[6] InPackets",
+	"Queue[6] OutPackets",
+	"Queue[6] InJumboPackets",
+	"Queue[6] InLroPackets",
+	"Queue[6] InErrors",
+	"Queue[7] InPackets",
+	"Queue[7] OutPackets",
+	"Queue[7] InJumboPackets",
+	"Queue[7] InLroPackets",
+	"Queue[7] InErrors",
+};
+
+static void aq_ethtool_stats(struct net_device *ndev,
+			     struct ethtool_stats *stats, u64 *data)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+
+/* ASSERT: Need add lines to aq_ethtool_stat_names if AQ_CFG_VECS_MAX > 8 */
+	BUILD_BUG_ON(AQ_CFG_VECS_MAX > 8);
+	memset(data, 0, ARRAY_SIZE(aq_ethtool_stat_names) * sizeof(u64));
+	aq_nic_get_stats(aq_nic, data);
+}
+
+static void aq_ethtool_get_drvinfo(struct net_device *ndev,
+				   struct ethtool_drvinfo *drvinfo)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
+	struct pci_dev *pdev = to_pci_dev(ndev->dev.parent);
+	u32 firmware_version = aq_nic_get_fw_version(aq_nic);
+	u32 regs_count = aq_nic_get_regs_count(aq_nic);
+
+	strlcat(drvinfo->driver, AQ_CFG_DRV_NAME, sizeof(drvinfo->driver));
+	strlcat(drvinfo->version, AQ_CFG_DRV_VERSION, sizeof(drvinfo->version));
+
+	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
+		 "%u.%u.%u", firmware_version >> 24,
+		 (firmware_version >> 16) & 0xFFU, firmware_version & 0xFFFFU);
+
+	strlcpy(drvinfo->bus_info, pdev ? pci_name(pdev) : "",
+		sizeof(drvinfo->bus_info));
+	drvinfo->n_stats = ARRAY_SIZE(aq_ethtool_stat_names) -
+		(AQ_CFG_VECS_MAX - cfg->vecs) * aq_ethtool_stat_queue_lines;
+	drvinfo->testinfo_len = 0;
+	drvinfo->regdump_len = regs_count;
+	drvinfo->eedump_len = 0;
+}
+
+static void aq_ethtool_get_strings(struct net_device *ndev,
+				   u32 stringset, u8 *data)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
+
+	if (stringset == ETH_SS_STATS)
+		memcpy(data, *aq_ethtool_stat_names,
+		       sizeof(aq_ethtool_stat_names) -
+		       (AQ_CFG_VECS_MAX - cfg->vecs) *
+		       aq_ethtool_stat_queue_chars);
+}
+
+static int aq_ethtool_get_sset_count(struct net_device *ndev, int stringset)
+{
+	int ret = 0;
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
+
+	switch (stringset) {
+	case ETH_SS_STATS:
+		ret = ARRAY_SIZE(aq_ethtool_stat_names) -
+			(AQ_CFG_VECS_MAX - cfg->vecs) *
+			aq_ethtool_stat_queue_lines;
+		break;
+	default:
+		ret = -EOPNOTSUPP;
+	}
+	return ret;
+}
+
+static u32 aq_ethtool_get_rss_indir_size(struct net_device *ndev)
+{
+	return AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
+}
+
+static u32 aq_ethtool_get_rss_key_size(struct net_device *ndev)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
+
+	return sizeof(cfg->aq_rss.hash_secret_key);
+}
+
+static int aq_ethtool_get_rss(struct net_device *ndev, u32 *indir, u8 *key,
+			      u8 *hfunc)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
+	unsigned int i = 0U;
+
+	if (hfunc)
+		*hfunc = ETH_RSS_HASH_TOP; /* Toeplitz */
+	if (indir) {
+		for (i = 0; i < AQ_CFG_RSS_INDIRECTION_TABLE_MAX; i++)
+			indir[i] = cfg->aq_rss.indirection_table[i];
+	}
+	if (key)
+		memcpy(key, cfg->aq_rss.hash_secret_key,
+		       sizeof(cfg->aq_rss.hash_secret_key));
+	return 0;
+}
+
+static int aq_ethtool_get_rxnfc(struct net_device *ndev,
+				struct ethtool_rxnfc *cmd,
+				u32 *rule_locs)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
+	int err = 0;
+
+	switch (cmd->cmd) {
+	case ETHTOOL_GRXRINGS:
+		cmd->data = cfg->vecs;
+		break;
+
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+
+	return err;
+}
+
+const struct ethtool_ops aq_ethtool_ops = {
+	.get_link            = aq_ethtool_get_link,
+	.get_regs_len        = aq_ethtool_get_regs_len,
+	.get_regs            = aq_ethtool_get_regs,
+	.get_settings        = aq_ethtool_get_settings,
+	.set_settings        = aq_ethtool_set_settings,
+	.get_drvinfo         = aq_ethtool_get_drvinfo,
+	.get_strings         = aq_ethtool_get_strings,
+	.get_rxfh_indir_size = aq_ethtool_get_rss_indir_size,
+	.get_rxfh_key_size   = aq_ethtool_get_rss_key_size,
+	.get_rxfh            = aq_ethtool_get_rss,
+	.get_rxnfc           = aq_ethtool_get_rxnfc,
+	.get_sset_count      = aq_ethtool_get_sset_count,
+	.get_ethtool_stats   = aq_ethtool_stats
+};

drivers/net/ethernet/aquantia/atlantic/aq_ethtool.h

+/*
+ * 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_ethtool.h: Declaration of ethertool related functions. */
+
+#ifndef AQ_ETHTOOL_H
+#define AQ_ETHTOOL_H
+
+#include "aq_common.h"
+
+extern const struct ethtool_ops aq_ethtool_ops;
+
+#endif /* AQ_ETHTOOL_H */

drivers/net/ethernet/aquantia/atlantic/aq_hw.h

+/*
+ * 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_hw.h: Declaraion of abstract interface for NIC hardware specific
+ * functions.
+ */
+
+#ifndef AQ_HW_H
+#define AQ_HW_H
+
+#include "aq_common.h"
+
+/* NIC H/W capabilities */
+struct aq_hw_caps_s {
+	u64 hw_features;
+	u64 link_speed_msk;
+	unsigned int hw_priv_flags;
+	u32 rxds;
+	u32 txds;
+	u32 txhwb_alignment;
+	u32 irq_mask;
+	u32 vecs;
+	u32 mtu;
+	u32 mac_regs_count;
+	u8 ports;
+	u8 msix_irqs;
+	u8 tcs;
+	u8 rxd_alignment;
+	u8 rxd_size;
+	u8 txd_alignment;
+	u8 txd_size;
+	u8 tx_rings;
+	u8 rx_rings;
+	bool flow_control;
+	bool is_64_dma;
+	u32 fw_ver_expected;
+};
+
+struct aq_hw_link_status_s {
+	unsigned int mbps;
+};
+
+#define AQ_HW_IRQ_INVALID 0U
+#define AQ_HW_IRQ_LEGACY  1U
+#define AQ_HW_IRQ_MSI     2U
+#define AQ_HW_IRQ_MSIX    3U
+
+#define AQ_HW_POWER_STATE_D0   0U
+#define AQ_HW_POWER_STATE_D3   3U
+
+#define AQ_HW_FLAG_STARTED     0x00000004U
+#define AQ_HW_FLAG_STOPPING    0x00000008U
+#define AQ_HW_FLAG_RESETTING   0x00000010U
+#define AQ_HW_FLAG_CLOSING     0x00000020U
+#define AQ_HW_LINK_DOWN        0x04000000U
+#define AQ_HW_FLAG_ERR_UNPLUG  0x40000000U
+#define AQ_HW_FLAG_ERR_HW      0x80000000U
+
+#define AQ_HW_FLAG_ERRORS      (AQ_HW_FLAG_ERR_HW | AQ_HW_FLAG_ERR_UNPLUG)
+
+struct aq_hw_s {
+	struct aq_obj_s header;
+	struct aq_nic_cfg_s *aq_nic_cfg;
+	struct aq_pci_func_s *aq_pci_func;
+	void __iomem *mmio;
+	unsigned int not_ff_addr;
+	struct aq_hw_link_status_s aq_link_status;
+};
+
+struct aq_ring_s;
+struct aq_ring_param_s;
+struct aq_nic_cfg_s;
+struct sk_buff;
+
+struct aq_hw_ops {
+	struct aq_hw_s *(*create)(struct aq_pci_func_s *aq_pci_func,
+				  unsigned int port, struct aq_hw_ops *ops);
+
+	void (*destroy)(struct aq_hw_s *self);
+
+	int (*get_hw_caps)(struct aq_hw_s *self,
+			   struct aq_hw_caps_s *aq_hw_caps);
+
+	int (*hw_ring_tx_xmit)(struct aq_hw_s *self, struct aq_ring_s *aq_ring,
+			       unsigned int frags);
+
+	int (*hw_ring_rx_receive)(struct aq_hw_s *self,
+				  struct aq_ring_s *aq_ring);
+
+	int (*hw_ring_rx_fill)(struct aq_hw_s *self, struct aq_ring_s *aq_ring,
+			       unsigned int sw_tail_old);
+
+	int (*hw_ring_tx_head_update)(struct aq_hw_s *self,
+				      struct aq_ring_s *aq_ring);
+
+	int (*hw_get_mac_permanent)(struct aq_hw_s *self,
+				    struct aq_hw_caps_s *aq_hw_caps,
+				    u8 *mac);
+
+	int (*hw_set_mac_address)(struct aq_hw_s *self, u8 *mac_addr);
+
+	int (*hw_get_link_status)(struct aq_hw_s *self,
+				  struct aq_hw_link_status_s *link_status);
+
+	int (*hw_set_link_speed)(struct aq_hw_s *self, u32 speed);
+
+	int (*hw_reset)(struct aq_hw_s *self);
+
+	int (*hw_init)(struct aq_hw_s *self, struct aq_nic_cfg_s *aq_nic_cfg,
+		       u8 *mac_addr);
+
+	int (*hw_start)(struct aq_hw_s *self);
+
+	int (*hw_stop)(struct aq_hw_s *self);
+
+	int (*hw_ring_tx_init)(struct aq_hw_s *self, struct aq_ring_s *aq_ring,
+			       struct aq_ring_param_s *aq_ring_param);
+
+	int (*hw_ring_tx_start)(struct aq_hw_s *self,
+				struct aq_ring_s *aq_ring);
+
+	int (*hw_ring_tx_stop)(struct aq_hw_s *self,
+			       struct aq_ring_s *aq_ring);
+
+	int (*hw_ring_rx_init)(struct aq_hw_s *self,
+			       struct aq_ring_s *aq_ring,
+			       struct aq_ring_param_s *aq_ring_param);
+
+	int (*hw_ring_rx_start)(struct aq_hw_s *self,
+				struct aq_ring_s *aq_ring);
+
+	int (*hw_ring_rx_stop)(struct aq_hw_s *self,
+			       struct aq_ring_s *aq_ring);
+
+	int (*hw_irq_enable)(struct aq_hw_s *self, u64 mask);
+
+	int (*hw_irq_disable)(struct aq_hw_s *self, u64 mask);
+
+	int (*hw_irq_read)(struct aq_hw_s *self, u64 *mask);
+
+	int (*hw_packet_filter_set)(struct aq_hw_s *self,
+				    unsigned int packet_filter);
+
+	int (*hw_multicast_list_set)(struct aq_hw_s *self,
+				     u8 ar_mac[AQ_CFG_MULTICAST_ADDRESS_MAX]
+				     [ETH_ALEN],
+				     u32 count);
+
+	int (*hw_interrupt_moderation_set)(struct aq_hw_s *self,
+					   bool itr_enabled);
+
+	int (*hw_rss_set)(struct aq_hw_s *self,
+			  struct aq_rss_parameters *rss_params);
+
+	int (*hw_rss_hash_set)(struct aq_hw_s *self,
+			       struct aq_rss_parameters *rss_params);
+
+	int (*hw_get_regs)(struct aq_hw_s *self,
+			   struct aq_hw_caps_s *aq_hw_caps, u32 *regs_buff);
+
+	int (*hw_get_hw_stats)(struct aq_hw_s *self, u64 *data,
+			       unsigned int *p_count);
+
+	int (*hw_get_fw_version)(struct aq_hw_s *self, u32 *fw_version);
+
+	int (*hw_deinit)(struct aq_hw_s *self);
+
+	int (*hw_set_power)(struct aq_hw_s *self, unsigned int power_state);
+};
+
+#endif /* AQ_HW_H */

drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.c

+/*
+ * 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_hw_utils.c: Definitions of helper functions used across
+ * hardware layer.
+ */
+
+#include "aq_hw_utils.h"
+#include "aq_hw.h"
+
+void aq_hw_write_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk,
+			 u32 shift, u32 val)
+{
+	if (msk ^ ~0) {
+		u32 reg_old, reg_new;
+
+		reg_old = aq_hw_read_reg(aq_hw, addr);
+		reg_new = (reg_old & (~msk)) | (val << shift);
+
+		if (reg_old != reg_new)
+			aq_hw_write_reg(aq_hw, addr, reg_new);
+	} else {
+		aq_hw_write_reg(aq_hw, addr, val);
+	}
+}
+
+u32 aq_hw_read_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk, u32 shift)
+{
+	return ((aq_hw_read_reg(aq_hw, addr) & msk) >> shift);
+}
+
+u32 aq_hw_read_reg(struct aq_hw_s *hw, u32 reg)
+{
+	u32 value = readl(hw->mmio + reg);
+
+	if ((~0U) == value && (~0U) == readl(hw->mmio + hw->not_ff_addr))
+		aq_utils_obj_set(&hw->header.flags, AQ_HW_FLAG_ERR_UNPLUG);
+
+	return value;
+}
+
+void aq_hw_write_reg(struct aq_hw_s *hw, u32 reg, u32 value)
+{
+	writel(value, hw->mmio + reg);
+}
+
+int aq_hw_err_from_flags(struct aq_hw_s *hw)
+{
+	int err = 0;
+
+	if (aq_utils_obj_test(&hw->header.flags, AQ_HW_FLAG_ERR_UNPLUG)) {
+		err = -ENXIO;
+		goto err_exit;
+	}
+	if (aq_utils_obj_test(&hw->header.flags, AQ_HW_FLAG_ERR_HW)) {
+		err = -EIO;
+		goto err_exit;
+	}
+
+err_exit:
+	return err;
+}

drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h

+/*
+ * 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_hw_utils.h: Declaration of helper functions used across hardware
+ * layer.
+ */
+
+#ifndef AQ_HW_UTILS_H
+#define AQ_HW_UTILS_H
+
+#include "aq_common.h"
+
+#ifndef HIDWORD
+#define LODWORD(_qw)    ((u32)(_qw))
+#define HIDWORD(_qw)    ((u32)(((_qw) >> 32) & 0xffffffff))
+#endif
+
+#define AQ_HW_SLEEP(_US_) mdelay(_US_)
+
+#define AQ_HW_WAIT_FOR(_B_, _US_, _N_) \
+do { \
+	unsigned int AQ_HW_WAIT_FOR_i; \
+	for (AQ_HW_WAIT_FOR_i = _N_; (!(_B_)) && (AQ_HW_WAIT_FOR_i);\
+	--AQ_HW_WAIT_FOR_i) {\
+		udelay(_US_); \
+	} \
+	if (!AQ_HW_WAIT_FOR_i) {\
+		err = ETIME; \
+	} \
+} while (0)
+
+struct aq_hw_s;
+
+void aq_hw_write_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk,
+			 u32 shift, u32 val);
+u32 aq_hw_read_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk, u32 shift);
+u32 aq_hw_read_reg(struct aq_hw_s *hw, u32 reg);
+void aq_hw_write_reg(struct aq_hw_s *hw, u32 reg, u32 value);
+int aq_hw_err_from_flags(struct aq_hw_s *hw);
+
+#endif /* AQ_HW_UTILS_H */

drivers/net/ethernet/aquantia/atlantic/aq_main.c

+/*
+ * 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);

drivers/net/ethernet/aquantia/atlantic/aq_main.h

+/*
+ * 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 */

drivers/net/ethernet/aquantia/atlantic/aq_nic.h

+/*
+ * 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 */

drivers/net/ethernet/aquantia/atlantic/aq_nic_internal.h

+/*
+ * 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 */

drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c

+/*
+ * 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_pci_func.c: Definition of PCI functions. */
+
+#include "aq_pci_func.h"
+#include "aq_nic.h"
+#include "aq_vec.h"
+#include "aq_hw.h"
+#include <linux/interrupt.h>
+
+struct aq_pci_func_s {
+	struct pci_dev *pdev;
+	struct aq_nic_s *port[AQ_CFG_PCI_FUNC_PORTS];
+	void __iomem *mmio;
+	void *aq_vec[AQ_CFG_PCI_FUNC_MSIX_IRQS];
+	resource_size_t mmio_pa;
+	unsigned int msix_entry_mask;
+	unsigned int irq_type;
+	unsigned int ports;
+	bool is_pci_enabled;
+	bool is_regions;
+	bool is_pci_using_dac;
+	struct aq_hw_caps_s aq_hw_caps;
+	struct msix_entry msix_entry[AQ_CFG_PCI_FUNC_MSIX_IRQS];
+};
+
+struct aq_pci_func_s *aq_pci_func_alloc(struct aq_hw_ops *aq_hw_ops,
+					struct pci_dev *pdev,
+					const struct net_device_ops *ndev_ops,
+					const struct ethtool_ops *eth_ops)
+{
+	struct aq_pci_func_s *self = NULL;
+	int err = 0;
+	unsigned int port = 0U;
+
+	if (!aq_hw_ops) {
+		err = -EFAULT;
+		goto err_exit;
+	}
+	self = kzalloc(sizeof(*self), GFP_KERNEL);
+	if (!self) {
+		err = -ENOMEM;
+		goto err_exit;
+	}
+
+	pci_set_drvdata(pdev, self);
+	self->pdev = pdev;
+
+	err = aq_hw_ops->get_hw_caps(NULL, &self->aq_hw_caps);
+	if (err < 0)
+		goto err_exit;
+
+	self->ports = self->aq_hw_caps.ports;
+
+	for (port = 0; port < self->ports; ++port) {
+		struct aq_nic_s *aq_nic = aq_nic_alloc_cold(ndev_ops, eth_ops,
+							    &pdev->dev, self,
+							    port, aq_hw_ops);
+
+		if (!aq_nic) {
+			err = -ENOMEM;
+			goto err_exit;
+		}
+		self->port[port] = aq_nic;
+	}
+
+err_exit:
+	if (err < 0) {
+		if (self)
+			aq_pci_func_free(self);
+		self = NULL;
+	}
+
+	(void)err;
+	return self;
+}
+
+int aq_pci_func_init(struct aq_pci_func_s *self)
+{
+	int err = 0;
+	unsigned int bar = 0U;
+	unsigned int port = 0U;
+	unsigned int i = 0U;
+
+	err = pci_enable_device(self->pdev);
+	if (err < 0)
+		goto err_exit;
+
+	self->is_pci_enabled = true;
+
+	err = pci_set_dma_mask(self->pdev, DMA_BIT_MASK(64));
+	if (!err) {
+		err = pci_set_consistent_dma_mask(self->pdev, DMA_BIT_MASK(64));
+		self->is_pci_using_dac = 1;
+	}
+	if (err) {
+		err = pci_set_dma_mask(self->pdev, DMA_BIT_MASK(32));
+		if (!err)
+			err = pci_set_consistent_dma_mask(self->pdev,
+							  DMA_BIT_MASK(32));
+		self->is_pci_using_dac = 0;
+	}
+	if (err != 0) {
+		err = -ENOSR;
+		goto err_exit;
+	}
+
+	err = pci_request_regions(self->pdev, AQ_CFG_DRV_NAME "_mmio");
+	if (err < 0)
+		goto err_exit;
+
+	self->is_regions = true;
+
+	pci_set_master(self->pdev);
+
+	for (bar = 0; bar < 4; ++bar) {
+		if (IORESOURCE_MEM & pci_resource_flags(self->pdev, bar)) {
+			resource_size_t reg_sz;
+
+			self->mmio_pa = pci_resource_start(self->pdev, bar);
+			if (self->mmio_pa == 0U) {
+				err = -EIO;
+				goto err_exit;
+			}
+
+			reg_sz = pci_resource_len(self->pdev, bar);
+			if ((reg_sz <= 24 /*ATL_REGS_SIZE*/)) {
+				err = -EIO;
+				goto err_exit;
+			}
+
+			self->mmio = ioremap_nocache(self->mmio_pa, reg_sz);
+			if (!self->mmio) {
+				err = -EIO;
+				goto err_exit;
+			}
+			break;
+		}
+	}
+
+	if (err < 0)
+		goto err_exit;
+	for (i = 0; i < self->aq_hw_caps.msix_irqs; i++)
+		self->msix_entry[i].entry = i;
+
+	/*enable interrupts */
+#if AQ_CFG_FORCE_LEGACY_INT
+	self->irq_type = AQ_HW_IRQ_LEGACY;
+#else
+	err = pci_enable_msix(self->pdev, self->msix_entry,
+			      self->aq_hw_caps.msix_irqs);
+
+	if (err >= 0) {
+		self->irq_type = AQ_HW_IRQ_MSIX;
+	} else {
+		err = pci_enable_msi(self->pdev);
+
+		if (err >= 0) {
+			self->irq_type = AQ_HW_IRQ_MSI;
+		} else {
+			self->irq_type = AQ_HW_IRQ_LEGACY;
+			err = 0;
+		}
+	}
+#endif
+
+	/* net device init */
+	for (port = 0; port < self->ports; ++port) {
+		if (!self->port[port])
+			continue;
+
+		err = aq_nic_cfg_start(self->port[port]);
+		if (err < 0)
+			goto err_exit;
+
+		err = aq_nic_ndev_init(self->port[port]);
+		if (err < 0)
+			goto err_exit;
+
+		err = aq_nic_ndev_register(self->port[port]);
+		if (err < 0)
+			goto err_exit;
+	}
+
+err_exit:
+	if (err < 0)
+		aq_pci_func_deinit(self);
+	return err;
+}
+
+int aq_pci_func_alloc_irq(struct aq_pci_func_s *self, unsigned int i,
+			  char *name, void *aq_vec, cpumask_t *affinity_mask)
+{
+	int err = 0;
+
+	switch (self->irq_type) {
+	case AQ_HW_IRQ_MSIX:
+		err = request_irq(self->msix_entry[i].vector, aq_vec_isr, 0,
+				  name, aq_vec);
+		break;
+
+	case AQ_HW_IRQ_MSI:
+		err = request_irq(self->pdev->irq, aq_vec_isr, 0, name, aq_vec);
+		break;
+
+	case AQ_HW_IRQ_LEGACY:
+		err = request_irq(self->pdev->irq, aq_vec_isr_legacy,
+				  IRQF_SHARED, name, aq_vec);
+		break;
+
+	default:
+		err = -EFAULT;
+		break;
+	}
+
+	if (err >= 0) {
+		self->msix_entry_mask |= (1 << i);
+		self->aq_vec[i] = aq_vec;
+
+		if (self->irq_type == AQ_HW_IRQ_MSIX)
+			irq_set_affinity_hint(self->msix_entry[i].vector,
+					      affinity_mask);
+	}
+
+	return err;
+}
+
+void aq_pci_func_free_irqs(struct aq_pci_func_s *self)
+{
+	unsigned int i = 0U;
+
+	for (i = 32U; i--;) {
+		if (!((1U << i) & self->msix_entry_mask))
+			continue;
+
+		switch (self->irq_type) {
+		case AQ_HW_IRQ_MSIX:
+			irq_set_affinity_hint(self->msix_entry[i].vector, NULL);
+			free_irq(self->msix_entry[i].vector, self->aq_vec[i]);
+			break;
+
+		case AQ_HW_IRQ_MSI:
+			free_irq(self->pdev->irq, self->aq_vec[i]);
+			break;
+
+		case AQ_HW_IRQ_LEGACY:
+			free_irq(self->pdev->irq, self->aq_vec[i]);
+			break;
+
+		default:
+			break;
+		}
+
+		self->msix_entry_mask &= ~(1U << i);
+	}
+}
+
+void __iomem *aq_pci_func_get_mmio(struct aq_pci_func_s *self)
+{
+	return self->mmio;
+}
+
+unsigned int aq_pci_func_get_irq_type(struct aq_pci_func_s *self)
+{
+	return self->irq_type;
+}
+
+void aq_pci_func_deinit(struct aq_pci_func_s *self)
+{
+	if (!self)
+		goto err_exit;
+
+	aq_pci_func_free_irqs(self);
+
+	switch (self->irq_type) {
+	case AQ_HW_IRQ_MSI:
+		pci_disable_msi(self->pdev);
+		break;
+
+	case AQ_HW_IRQ_MSIX:
+		pci_disable_msix(self->pdev);
+		break;
+
+	case AQ_HW_IRQ_LEGACY:
+		break;
+
+	default:
+		break;
+	}
+
+	if (self->is_regions)
+		pci_release_regions(self->pdev);
+
+	if (self->is_pci_enabled)
+		pci_disable_device(self->pdev);
+
+err_exit:;
+}
+
+void aq_pci_func_free(struct aq_pci_func_s *self)
+{
+	unsigned int port = 0U;
+
+	if (!self)
+		goto err_exit;
+
+	for (port = 0; port < self->ports; ++port) {
+		if (!self->port[port])
+			continue;
+
+		aq_nic_ndev_free(self->port[port]);
+	}
+
+	kfree(self);
+
+err_exit:;
+}
+
+int aq_pci_func_change_pm_state(struct aq_pci_func_s *self,
+				pm_message_t *pm_msg)
+{
+	int err = 0;
+	unsigned int port = 0U;
+
+	if (!self) {
+		err = -EFAULT;
+		goto err_exit;
+	}
+	for (port = 0; port < self->ports; ++port) {
+		if (!self->port[port])
+			continue;
+
+		(void)aq_nic_change_pm_state(self->port[port], pm_msg);
+	}
+
+err_exit:
+	return err;
+}

drivers/net/ethernet/aquantia/atlantic/aq_pci_func.h

+/*
+ * 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_pci_func.h: Declaration of PCI functions. */
+
+#ifndef AQ_PCI_FUNC_H
+#define AQ_PCI_FUNC_H
+
+#include "aq_common.h"
+
+struct aq_pci_func_s *aq_pci_func_alloc(struct aq_hw_ops *hw_ops,
+					struct pci_dev *pdev,
+					const struct net_device_ops *ndev_ops,
+					const struct ethtool_ops *eth_ops);
+int aq_pci_func_init(struct aq_pci_func_s *self);
+int aq_pci_func_alloc_irq(struct aq_pci_func_s *self, unsigned int i,
+			  char *name, void *aq_vec,
+			  cpumask_t *affinity_mask);
+void aq_pci_func_free_irqs(struct aq_pci_func_s *self);
+int aq_pci_func_start(struct aq_pci_func_s *self);
+void __iomem *aq_pci_func_get_mmio(struct aq_pci_func_s *self);
+unsigned int aq_pci_func_get_irq_type(struct aq_pci_func_s *self);
+void aq_pci_func_deinit(struct aq_pci_func_s *self);
+void aq_pci_func_free(struct aq_pci_func_s *self);
+int aq_pci_func_change_pm_state(struct aq_pci_func_s *self,
+				pm_message_t *pm_msg);
+
+#endif /* AQ_PCI_FUNC_H */

drivers/net/ethernet/aquantia/atlantic/aq_ring.c

+/*
+ * 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_ring.c: Definition of functions for Rx/Tx rings. */
+
+#include "aq_ring.h"
+#include "aq_nic.h"
+#include "aq_hw.h"
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+
+static struct aq_ring_s *aq_ring_alloc(struct aq_ring_s *self,
+				       struct aq_nic_s *aq_nic)
+{
+	int err = 0;
+
+	self->buff_ring =
+		kcalloc(self->size, sizeof(struct aq_ring_buff_s), GFP_KERNEL);
+
+	if (!self->buff_ring) {
+		err = -ENOMEM;
+		goto err_exit;
+	}
+	self->dx_ring = dma_alloc_coherent(aq_nic_get_dev(aq_nic),
+						self->size * self->dx_size,
+						&self->dx_ring_pa, GFP_KERNEL);
+	if (!self->dx_ring) {
+		err = -ENOMEM;
+		goto err_exit;
+	}
+
+err_exit:
+	if (err < 0) {
+		aq_ring_free(self);
+		self = NULL;
+	}
+	return self;
+}
+
+struct aq_ring_s *aq_ring_tx_alloc(struct aq_ring_s *self,
+				   struct aq_nic_s *aq_nic,
+				   unsigned int idx,
+				   struct aq_nic_cfg_s *aq_nic_cfg)
+{
+	int err = 0;
+
+	self->aq_nic = aq_nic;
+	self->idx = idx;
+	self->size = aq_nic_cfg->txds;
+	self->dx_size = aq_nic_cfg->aq_hw_caps->txd_size;
+
+	self = aq_ring_alloc(self, aq_nic);
+	if (!self) {
+		err = -ENOMEM;
+		goto err_exit;
+	}
+
+err_exit:
+	if (err < 0) {
+		aq_ring_free(self);
+		self = NULL;
+	}
+	return self;
+}
+
+struct aq_ring_s *aq_ring_rx_alloc(struct aq_ring_s *self,
+				   struct aq_nic_s *aq_nic,
+				   unsigned int idx,
+				   struct aq_nic_cfg_s *aq_nic_cfg)
+{
+	int err = 0;
+
+	self->aq_nic = aq_nic;
+	self->idx = idx;
+	self->size = aq_nic_cfg->rxds;
+	self->dx_size = aq_nic_cfg->aq_hw_caps->rxd_size;
+
+	self = aq_ring_alloc(self, aq_nic);
+	if (!self) {
+		err = -ENOMEM;
+		goto err_exit;
+	}
+
+err_exit:
+	if (err < 0) {
+		aq_ring_free(self);
+		self = NULL;
+	}
+	return self;
+}
+
+int aq_ring_init(struct aq_ring_s *self)
+{
+	self->hw_head = 0;
+	self->sw_head = 0;
+	self->sw_tail = 0;
+	return 0;
+}
+
+void aq_ring_tx_append_buffs(struct aq_ring_s *self,
+			     struct aq_ring_buff_s *buffer,
+			     unsigned int buffers)
+{
+	if (likely(self->sw_tail + buffers < self->size)) {
+		memcpy(&self->buff_ring[self->sw_tail], buffer,
+		       sizeof(buffer[0]) * buffers);
+	} else {
+		unsigned int first_part = self->size - self->sw_tail;
+		unsigned int second_part = buffers - first_part;
+
+		memcpy(&self->buff_ring[self->sw_tail], buffer,
+		       sizeof(buffer[0]) * first_part);
+
+		memcpy(&self->buff_ring[0], &buffer[first_part],
+		       sizeof(buffer[0]) * second_part);
+	}
+}
+
+int aq_ring_tx_clean(struct aq_ring_s *self)
+{
+	struct device *dev = aq_nic_get_dev(self->aq_nic);
+
+	for (; self->sw_head != self->hw_head;
+		self->sw_head = aq_ring_next_dx(self, self->sw_head)) {
+		struct aq_ring_buff_s *buff = &self->buff_ring[self->sw_head];
+
+		if (likely(buff->is_mapped)) {
+			if (unlikely(buff->is_sop))
+				dma_unmap_single(dev, buff->pa, buff->len,
+						 DMA_TO_DEVICE);
+			else
+				dma_unmap_page(dev, buff->pa, buff->len,
+					       DMA_TO_DEVICE);
+		}
+
+		if (unlikely(buff->is_eop))
+			dev_kfree_skb_any(buff->skb);
+	}
+
+	if (aq_ring_avail_dx(self) > AQ_CFG_SKB_FRAGS_MAX)
+		aq_nic_ndev_queue_start(self->aq_nic, self->idx);
+
+	return 0;
+}
+
+static inline unsigned int aq_ring_dx_in_range(unsigned int h, unsigned int i,
+					       unsigned int t)
+{
+	return (h < t) ? ((h < i) && (i < t)) : ((h < i) || (i < t));
+}
+
+#define AQ_SKB_ALIGN SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
+int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget)
+{
+	struct net_device *ndev = aq_nic_get_ndev(self->aq_nic);
+	int err = 0;
+	bool is_rsc_completed = true;
+
+	for (; (self->sw_head != self->hw_head) && budget;
+		self->sw_head = aq_ring_next_dx(self, self->sw_head),
+		--budget, ++(*work_done)) {
+		struct aq_ring_buff_s *buff = &self->buff_ring[self->sw_head];
+		struct sk_buff *skb = NULL;
+		unsigned int next_ = 0U;
+		unsigned int i = 0U;
+		struct aq_ring_buff_s *buff_ = NULL;
+
+		if (buff->is_error) {
+			__free_pages(buff->page, 0);
+			continue;
+		}
+
+		if (buff->is_cleaned)
+			continue;
+
+		if (!buff->is_eop) {
+			for (next_ = buff->next,
+			     buff_ = &self->buff_ring[next_]; true;
+			     next_ = buff_->next,
+			     buff_ = &self->buff_ring[next_]) {
+				is_rsc_completed =
+					aq_ring_dx_in_range(self->sw_head,
+							    next_,
+							    self->hw_head);
+
+				if (unlikely(!is_rsc_completed)) {
+					is_rsc_completed = false;
+					break;
+				}
+
+				if (buff_->is_eop)
+					break;
+			}
+
+			if (!is_rsc_completed) {
+				err = 0;
+				goto err_exit;
+			}
+		}
+
+		/* for single fragment packets use build_skb() */
+		if (buff->is_eop) {
+			skb = build_skb(page_address(buff->page),
+					buff->len + AQ_SKB_ALIGN);
+			if (unlikely(!skb)) {
+				err = -ENOMEM;
+				goto err_exit;
+			}
+
+			skb->dev = ndev;
+			skb_put(skb, buff->len);
+		} else {
+			skb = netdev_alloc_skb(ndev, ETH_HLEN);
+			if (unlikely(!skb)) {
+				err = -ENOMEM;
+				goto err_exit;
+			}
+			skb_put(skb, ETH_HLEN);
+			memcpy(skb->data, page_address(buff->page), ETH_HLEN);
+
+			skb_add_rx_frag(skb, 0, buff->page, ETH_HLEN,
+					buff->len - ETH_HLEN,
+					SKB_TRUESIZE(buff->len - ETH_HLEN));
+
+			for (i = 1U, next_ = buff->next,
+			     buff_ = &self->buff_ring[next_]; true;
+			     next_ = buff_->next,
+			     buff_ = &self->buff_ring[next_], ++i) {
+				skb_add_rx_frag(skb, i, buff_->page, 0,
+						buff_->len,
+						SKB_TRUESIZE(buff->len -
+						ETH_HLEN));
+				buff_->is_cleaned = 1;
+
+				if (buff_->is_eop)
+					break;
+			}
+		}
+
+		skb->protocol = eth_type_trans(skb, ndev);
+		if (unlikely(buff->is_cso_err)) {
+			++self->stats.rx.errors;
+			__skb_mark_checksum_bad(skb);
+		} else {
+			if (buff->is_ip_cso) {
+				__skb_incr_checksum_unnecessary(skb);
+				if (buff->is_udp_cso || buff->is_tcp_cso)
+					__skb_incr_checksum_unnecessary(skb);
+			} else {
+				skb->ip_summed = CHECKSUM_NONE;
+			}
+		}
+
+		skb_set_hash(skb, buff->rss_hash,
+			     buff->is_hash_l4 ? PKT_HASH_TYPE_L4 :
+			     PKT_HASH_TYPE_NONE);
+
+		skb_record_rx_queue(skb, self->idx);
+
+		netif_receive_skb(skb);
+
+		++self->stats.rx.packets;
+		self->stats.rx.bytes += skb->len;
+	}
+
+err_exit:
+	return err;
+}
+
+int aq_ring_rx_fill(struct aq_ring_s *self)
+{
+	struct aq_ring_buff_s *buff = NULL;
+	int err = 0;
+	int i = 0;
+
+	for (i = aq_ring_avail_dx(self); i--;
+		self->sw_tail = aq_ring_next_dx(self, self->sw_tail)) {
+		buff = &self->buff_ring[self->sw_tail];
+
+		buff->flags = 0U;
+		buff->len = AQ_CFG_RX_FRAME_MAX;
+
+		buff->page = alloc_pages(GFP_ATOMIC | __GFP_COLD |
+					 __GFP_COMP, 0);
+		if (!buff->page) {
+			err = -ENOMEM;
+			goto err_exit;
+		}
+
+		buff->pa = dma_map_page(aq_nic_get_dev(self->aq_nic),
+					buff->page, 0,
+					AQ_CFG_RX_FRAME_MAX, DMA_FROM_DEVICE);
+
+		err = dma_mapping_error(aq_nic_get_dev(self->aq_nic), buff->pa);
+		if (err < 0)
+			goto err_exit;
+
+		buff = NULL;
+	}
+	if (err < 0)
+		goto err_exit;
+
+err_exit:
+	if (err < 0) {
+		if (buff && buff->page)
+			__free_pages(buff->page, 0);
+	}
+
+	return err;
+}
+
+void aq_ring_rx_deinit(struct aq_ring_s *self)
+{
+	if (!self)
+		goto err_exit;
+
+	for (; self->sw_head != self->sw_tail;
+		self->sw_head = aq_ring_next_dx(self, self->sw_head)) {
+		struct aq_ring_buff_s *buff = &self->buff_ring[self->sw_head];
+
+		dma_unmap_page(aq_nic_get_dev(self->aq_nic), buff->pa,
+			       AQ_CFG_RX_FRAME_MAX, DMA_FROM_DEVICE);
+
+		__free_pages(buff->page, 0);
+	}
+
+err_exit:;
+}
+
+void aq_ring_tx_deinit(struct aq_ring_s *self)
+{
+	if (!self)
+		goto err_exit;
+
+	for (; self->sw_head != self->sw_tail;
+		self->sw_head = aq_ring_next_dx(self, self->sw_head)) {
+		struct aq_ring_buff_s *buff = &self->buff_ring[self->sw_head];
+		struct device *ndev = aq_nic_get_dev(self->aq_nic);
+
+		if (likely(buff->is_mapped)) {
+			if (unlikely(buff->is_sop)) {
+				dma_unmap_single(ndev, buff->pa, buff->len,
+						 DMA_TO_DEVICE);
+			} else {
+				dma_unmap_page(ndev, buff->pa, buff->len,
+					       DMA_TO_DEVICE);
+			}
+		}
+
+		if (unlikely(buff->is_eop))
+			dev_kfree_skb_any(buff->skb);
+	}
+err_exit:;
+}
+
+void aq_ring_free(struct aq_ring_s *self)
+{
+	if (!self)
+		goto err_exit;
+
+	kfree(self->buff_ring);
+
+	if (self->dx_ring)
+		dma_free_coherent(aq_nic_get_dev(self->aq_nic),
+				  self->size * self->dx_size, self->dx_ring,
+				  self->dx_ring_pa);
+
+err_exit:;
+}

drivers/net/ethernet/aquantia/atlantic/aq_ring.h

+/*
+ * 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_ring.h: Declaration of functions for Rx/Tx rings. */
+
+#ifndef AQ_RING_H
+#define AQ_RING_H
+
+#include "aq_common.h"
+
+struct page;
+
+/*           TxC       SOP        DX         EOP
+ *         +----------+----------+----------+-----------
+ *   8bytes|len l3,l4 | pa       | pa       | pa
+ *         +----------+----------+----------+-----------
+ * 4/8bytes|len pkt   |len pkt   |          | skb
+ *         +----------+----------+----------+-----------
+ * 4/8bytes|is_txc    |len,flags |len       |len,is_eop
+ *         +----------+----------+----------+-----------
+ *
+ *  This aq_ring_buff_s doesn't have endianness dependency.
+ *  It is __packed for cache line optimizations.
+ */
+struct __packed aq_ring_buff_s {
+	union {
+		/* RX */
+		struct {
+			u32 rss_hash;
+			u16 next;
+			u8 is_hash_l4;
+			u8 rsvd1;
+			struct page *page;
+		};
+		/* EOP */
+		struct {
+			dma_addr_t pa_eop;
+			struct sk_buff *skb;
+		};
+		/* DX */
+		struct {
+			dma_addr_t pa;
+		};
+		/* SOP */
+		struct {
+			dma_addr_t pa_sop;
+			u32 len_pkt_sop;
+		};
+		/* TxC */
+		struct {
+			u32 mss;
+			u8 len_l2;
+			u8 len_l3;
+			u8 len_l4;
+			u8 rsvd2;
+			u32 len_pkt;
+		};
+	};
+	union {
+		struct {
+			u32 len:16;
+			u32 is_ip_cso:1;
+			u32 is_udp_cso:1;
+			u32 is_tcp_cso:1;
+			u32 is_cso_err:1;
+			u32 is_sop:1;
+			u32 is_eop:1;
+			u32 is_txc:1;
+			u32 is_mapped:1;
+			u32 is_cleaned:1;
+			u32 is_error:1;
+			u32 rsvd3:6;
+		};
+		u32 flags;
+	};
+};
+
+struct aq_ring_stats_rx_s {
+	u64 errors;
+	u64 packets;
+	u64 bytes;
+	u64 lro_packets;
+	u64 jumbo_packets;
+};
+
+struct aq_ring_stats_tx_s {
+	u64 errors;
+	u64 packets;
+	u64 bytes;
+};
+
+union aq_ring_stats_s {
+	struct aq_ring_stats_rx_s rx;
+	struct aq_ring_stats_tx_s tx;
+};
+
+struct aq_ring_s {
+	struct aq_obj_s header;
+	struct aq_ring_buff_s *buff_ring;
+	u8 *dx_ring;		/* descriptors ring, dma shared mem */
+	struct aq_nic_s *aq_nic;
+	unsigned int idx;	/* for HW layer registers operations */
+	unsigned int hw_head;
+	unsigned int sw_head;
+	unsigned int sw_tail;
+	unsigned int size;	/* descriptors number */
+	unsigned int dx_size;	/* TX or RX descriptor size,  */
+				/* stored here for fater math */
+	union aq_ring_stats_s stats;
+	dma_addr_t dx_ring_pa;
+};
+
+struct aq_ring_param_s {
+	unsigned int vec_idx;
+	unsigned int cpu;
+	cpumask_t affinity_mask;
+};
+
+static inline unsigned int aq_ring_next_dx(struct aq_ring_s *self,
+					   unsigned int dx)
+{
+	return (++dx >= self->size) ? 0U : dx;
+}
+
+static inline unsigned int aq_ring_avail_dx(struct aq_ring_s *self)
+{
+	return (((self->sw_tail >= self->sw_head)) ?
+		(self->size - 1) - self->sw_tail + self->sw_head :
+		self->sw_head - self->sw_tail - 1);
+}
+
+struct aq_ring_s *aq_ring_tx_alloc(struct aq_ring_s *self,
+				   struct aq_nic_s *aq_nic,
+				   unsigned int idx,
+				   struct aq_nic_cfg_s *aq_nic_cfg);
+struct aq_ring_s *aq_ring_rx_alloc(struct aq_ring_s *self,
+				   struct aq_nic_s *aq_nic,
+				   unsigned int idx,
+				   struct aq_nic_cfg_s *aq_nic_cfg);
+int aq_ring_init(struct aq_ring_s *self);
+void aq_ring_tx_deinit(struct aq_ring_s *self);
+void aq_ring_rx_deinit(struct aq_ring_s *self);
+void aq_ring_free(struct aq_ring_s *self);
+void aq_ring_tx_append_buffs(struct aq_ring_s *ring,
+			     struct aq_ring_buff_s *buffer,
+			     unsigned int buffers);
+int aq_ring_tx_clean(struct aq_ring_s *self);
+int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget);
+int aq_ring_rx_fill(struct aq_ring_s *self);
+
+#endif /* AQ_RING_H */

drivers/net/ethernet/aquantia/atlantic/aq_rss.h

+/*
+ * 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_rss.h: Receive Side Scaling definitions. */
+
+#ifndef AQ_RSS_H
+#define AQ_RSS_H
+
+#include "aq_common.h"
+#include "aq_cfg.h"
+
+struct aq_rss_parameters {
+	u16 base_cpu_number;
+	u16 indirection_table_size;
+	u16 hash_secret_key_size;
+	u32 hash_secret_key[AQ_CFG_RSS_HASHKEY_SIZE / sizeof(u32)];
+	u8 indirection_table[AQ_CFG_RSS_INDIRECTION_TABLE_MAX];
+};
+
+#endif /* AQ_RSS_H */

drivers/net/ethernet/aquantia/atlantic/aq_utils.h

+/*
+ * 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_utils.h: Useful macro and structures used in all layers of driver. */
+
+#ifndef AQ_UTILS_H
+#define AQ_UTILS_H
+
+#include "aq_common.h"
+
+#define AQ_DIMOF(_ARY_)  ARRAY_SIZE(_ARY_)
+
+struct aq_obj_s {
+	spinlock_t lock; /* spinlock for nic/rings processing */
+	atomic_t flags;
+	atomic_t busy_count;
+};
+
+static inline void aq_utils_obj_set(atomic_t *flags, u32 mask)
+{
+	unsigned long flags_old, flags_new;
+
+	do {
+		flags_old = atomic_read(flags);
+		flags_new = flags_old | (mask);
+	} while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old);
+}
+
+static inline void aq_utils_obj_clear(atomic_t *flags, u32 mask)
+{
+	unsigned long flags_old, flags_new;
+
+	do {
+		flags_old = atomic_read(flags);
+		flags_new = flags_old & ~(mask);
+	} while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old);
+}
+
+static inline bool aq_utils_obj_test(atomic_t *flags, u32 mask)
+{
+	return atomic_read(flags) & mask;
+}
+
+#endif /* AQ_UTILS_H */

drivers/net/ethernet/aquantia/atlantic/aq_vec.c

+/*
+ * 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;
+}

drivers/net/ethernet/aquantia/atlantic/aq_vec.h

+/*
+ * 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 */

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.h

+/*
+ * 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 hw_atl_a0.h: Declaration of abstract interface for Atlantic hardware
+ * specific functions.
+ */
+
+#ifndef HW_ATL_A0_H
+#define HW_ATL_A0_H
+
+#include "../aq_common.h"
+
+#ifndef PCI_VENDOR_ID_AQUANTIA
+
+#define PCI_VENDOR_ID_AQUANTIA  0x1D6A
+#define HW_ATL_DEVICE_ID_0001   0x0001
+#define HW_ATL_DEVICE_ID_D100   0xD100
+#define HW_ATL_DEVICE_ID_D107   0xD107
+#define HW_ATL_DEVICE_ID_D108   0xD108
+#define HW_ATL_DEVICE_ID_D109   0xD109
+
+#define HW_ATL_NIC_NAME "aQuantia AQtion 5Gbit Network Adapter"
+
+#endif
+
+struct aq_hw_ops *hw_atl_a0_get_ops_by_id(struct pci_dev *pdev);
+
+#endif /* HW_ATL_A0_H */

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0_internal.h

+/*
+ * 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 hw_atl_a0_internal.h: Definition of Atlantic A0 chip specific
+ * constants.
+ */
+
+#ifndef HW_ATL_A0_INTERNAL_H
+#define HW_ATL_A0_INTERNAL_H
+
+#include "../aq_common.h"
+
+#define HW_ATL_A0_MTU_JUMBO 9014U
+
+#define HW_ATL_A0_TX_RINGS 4U
+#define HW_ATL_A0_RX_RINGS 4U
+
+#define HW_ATL_A0_RINGS_MAX 32U
+#define HW_ATL_A0_TXD_SIZE  16U
+#define HW_ATL_A0_RXD_SIZE  16U
+
+#define HW_ATL_A0_MAC      0U
+#define HW_ATL_A0_MAC_MIN  1U
+#define HW_ATL_A0_MAC_MAX  33U
+
+/* interrupts */
+#define HW_ATL_A0_ERR_INT 8U
+#define HW_ATL_A0_INT_MASK  0xFFFFFFFFU
+
+#define HW_ATL_A0_TXD_CTL2_LEN        0xFFFFC000U
+#define HW_ATL_A0_TXD_CTL2_CTX_EN     0x00002000U
+#define HW_ATL_A0_TXD_CTL2_CTX_IDX    0x00001000U
+
+#define HW_ATL_A0_TXD_CTL_DESC_TYPE_TXD   0x00000001U
+#define HW_ATL_A0_TXD_CTL_DESC_TYPE_TXC   0x00000002U
+#define HW_ATL_A0_TXD_CTL_BLEN        0x000FFFF0U
+#define HW_ATL_A0_TXD_CTL_DD          0x00100000U
+#define HW_ATL_A0_TXD_CTL_EOP         0x00200000U
+
+#define HW_ATL_A0_TXD_CTL_CMD_X       0x3FC00000U
+
+#define HW_ATL_A0_TXD_CTL_CMD_VLAN    BIT(22)
+#define HW_ATL_A0_TXD_CTL_CMD_FCS     BIT(23)
+#define HW_ATL_A0_TXD_CTL_CMD_IPCSO   BIT(24)
+#define HW_ATL_A0_TXD_CTL_CMD_TUCSO   BIT(25)
+#define HW_ATL_A0_TXD_CTL_CMD_LSO     BIT(26)
+#define HW_ATL_A0_TXD_CTL_CMD_WB      BIT(27)
+#define HW_ATL_A0_TXD_CTL_CMD_VXLAN   BIT(28)
+
+#define HW_ATL_A0_TXD_CTL_CMD_IPV6    BIT(21)
+#define HW_ATL_A0_TXD_CTL_CMD_TCP     BIT(22)
+
+#define HW_ATL_A0_MPI_CONTROL_ADR     0x0368U
+#define HW_ATL_A0_MPI_STATE_ADR       0x036CU
+
+#define HW_ATL_A0_MPI_SPEED_MSK       0xFFFFU
+#define HW_ATL_A0_MPI_SPEED_SHIFT     16U
+
+#define HW_ATL_A0_RATE_10G            BIT(0)
+#define HW_ATL_A0_RATE_5G             BIT(1)
+#define HW_ATL_A0_RATE_2G5            BIT(3)
+#define HW_ATL_A0_RATE_1G             BIT(4)
+#define HW_ATL_A0_RATE_100M           BIT(5)
+
+#define HW_ATL_A0_TXBUF_MAX 160U
+#define HW_ATL_A0_RXBUF_MAX 320U
+
+#define HW_ATL_A0_RSS_REDIRECTION_MAX 64U
+#define HW_ATL_A0_RSS_REDIRECTION_BITS 3U
+
+#define HW_ATL_A0_TC_MAX 1U
+#define HW_ATL_A0_RSS_MAX 8U
+
+#define HW_ATL_A0_FW_SEMA_RAM           0x2U
+
+#define HW_ATL_A0_RXD_DD    0x1U
+#define HW_ATL_A0_RXD_NCEA0 0x1U
+
+#define HW_ATL_A0_RXD_WB_STAT2_EOP     0x0002U
+
+#define HW_ATL_A0_UCP_0X370_REG  0x370U
+
+#define HW_ATL_A0_FW_VER_EXPECTED 0x01050006U
+
+/* Hardware tx descriptor */
+struct __packed hw_atl_txd_s {
+	u64 buf_addr;
+	u32 ctl;
+	u32 ctl2; /* 63..46 - payload length, 45 - ctx enable, 44 - ctx index */
+};
+
+/* Hardware tx context descriptor */
+struct __packed hw_atl_txc_s {
+	u32 rsvd;
+	u32 len;
+	u32 ctl;
+	u32 len2;
+};
+
+/* Hardware rx descriptor */
+struct __packed hw_atl_rxd_s {
+	u64 buf_addr;
+	u64 hdr_addr;
+};
+
+/* Hardware rx descriptor writeback */
+struct __packed hw_atl_rxd_wb_s {
+	u32 type;
+	u32 rss_hash;
+	u16 status;
+	u16 pkt_len;
+	u16 next_desc_ptr;
+	u16 vlan;
+};
+
+/* HW layer capabilities */
+static struct aq_hw_caps_s hw_atl_a0_hw_caps_ = {
+	.ports = 1U,
+	.is_64_dma = true,
+	.msix_irqs = 4U,
+	.irq_mask = ~0U,
+	.vecs = HW_ATL_A0_RSS_MAX,
+	.tcs = HW_ATL_A0_TC_MAX,
+	.rxd_alignment = 1U,
+	.rxd_size = HW_ATL_A0_RXD_SIZE,
+	.rxds = 248U,
+	.txd_alignment = 1U,
+	.txd_size = HW_ATL_A0_TXD_SIZE,
+	.txds = 8U * 1024U,
+	.txhwb_alignment = 4096U,
+	.tx_rings = HW_ATL_A0_TX_RINGS,
+	.rx_rings = HW_ATL_A0_RX_RINGS,
+	.hw_features = NETIF_F_HW_CSUM |
+			NETIF_F_RXHASH |
+			NETIF_F_SG |
+			NETIF_F_TSO,
+	.hw_priv_flags = IFF_UNICAST_FLT,
+	.link_speed_msk = (HW_ATL_A0_RATE_10G |
+			HW_ATL_A0_RATE_5G |
+			HW_ATL_A0_RATE_2G5 |
+			HW_ATL_A0_RATE_1G |
+			HW_ATL_A0_RATE_100M),
+	.flow_control = true,
+	.mtu = HW_ATL_A0_MTU_JUMBO,
+	.mac_regs_count = 88,
+	.fw_ver_expected = HW_ATL_A0_FW_VER_EXPECTED,
+};
+
+#endif /* HW_ATL_A0_INTERNAL_H */

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.h

+/*
+ * 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 hw_atl_b0.h: Declaration of abstract interface for Atlantic hardware
+ * specific functions.
+ */
+
+#ifndef HW_ATL_B0_H
+#define HW_ATL_B0_H
+
+#include "../aq_common.h"
+
+#ifndef PCI_VENDOR_ID_AQUANTIA
+
+#define PCI_VENDOR_ID_AQUANTIA  0x1D6A
+#define HW_ATL_DEVICE_ID_0001   0x0001
+#define HW_ATL_DEVICE_ID_D100   0xD100
+#define HW_ATL_DEVICE_ID_D107   0xD107
+#define HW_ATL_DEVICE_ID_D108   0xD108
+#define HW_ATL_DEVICE_ID_D109   0xD109
+
+#define HW_ATL_NIC_NAME "aQuantia AQtion 5Gbit Network Adapter"
+
+#endif
+
+struct aq_hw_ops *hw_atl_b0_get_ops_by_id(struct pci_dev *pdev);
+
+#endif /* HW_ATL_B0_H */

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0_internal.h

+/*
+ * 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 hw_atl_b0_internal.h: Definition of Atlantic B0 chip specific
+ * constants.
+ */
+
+#ifndef HW_ATL_B0_INTERNAL_H
+#define HW_ATL_B0_INTERNAL_H
+
+#include "../aq_common.h"
+
+#define HW_ATL_B0_MTU_JUMBO (16000U)
+#define HW_ATL_B0_MTU        1514U
+
+#define HW_ATL_B0_TX_RINGS 4U
+#define HW_ATL_B0_RX_RINGS 4U
+
+#define HW_ATL_B0_RINGS_MAX 32U
+#define HW_ATL_B0_TXD_SIZE       (16U)
+#define HW_ATL_B0_RXD_SIZE       (16U)
+
+#define HW_ATL_B0_MAC      0U
+#define HW_ATL_B0_MAC_MIN  1U
+#define HW_ATL_B0_MAC_MAX  33U
+
+/* UCAST/MCAST filters */
+#define HW_ATL_B0_UCAST_FILTERS_MAX 38
+#define HW_ATL_B0_MCAST_FILTERS_MAX 8
+
+/* interrupts */
+#define HW_ATL_B0_ERR_INT 8U
+#define HW_ATL_B0_INT_MASK  (0xFFFFFFFFU)
+
+#define HW_ATL_B0_TXD_CTL2_LEN        (0xFFFFC000)
+#define HW_ATL_B0_TXD_CTL2_CTX_EN     (0x00002000)
+#define HW_ATL_B0_TXD_CTL2_CTX_IDX    (0x00001000)
+
+#define HW_ATL_B0_TXD_CTL_DESC_TYPE_TXD   (0x00000001)
+#define HW_ATL_B0_TXD_CTL_DESC_TYPE_TXC   (0x00000002)
+#define HW_ATL_B0_TXD_CTL_BLEN        (0x000FFFF0)
+#define HW_ATL_B0_TXD_CTL_DD          (0x00100000)
+#define HW_ATL_B0_TXD_CTL_EOP         (0x00200000)
+
+#define HW_ATL_B0_TXD_CTL_CMD_X       (0x3FC00000)
+
+#define HW_ATL_B0_TXD_CTL_CMD_VLAN    BIT(22)
+#define HW_ATL_B0_TXD_CTL_CMD_FCS     BIT(23)
+#define HW_ATL_B0_TXD_CTL_CMD_IPCSO   BIT(24)
+#define HW_ATL_B0_TXD_CTL_CMD_TUCSO   BIT(25)
+#define HW_ATL_B0_TXD_CTL_CMD_LSO     BIT(26)
+#define HW_ATL_B0_TXD_CTL_CMD_WB      BIT(27)
+#define HW_ATL_B0_TXD_CTL_CMD_VXLAN   BIT(28)
+
+#define HW_ATL_B0_TXD_CTL_CMD_IPV6    BIT(21)
+#define HW_ATL_B0_TXD_CTL_CMD_TCP     BIT(22)
+
+#define HW_ATL_B0_MPI_CONTROL_ADR       0x0368U
+#define HW_ATL_B0_MPI_STATE_ADR         0x036CU
+
+#define HW_ATL_B0_MPI_SPEED_MSK         0xFFFFU
+#define HW_ATL_B0_MPI_SPEED_SHIFT       16U
+
+#define HW_ATL_B0_RATE_10G              BIT(0)
+#define HW_ATL_B0_RATE_5G               BIT(1)
+#define HW_ATL_B0_RATE_2G5              BIT(3)
+#define HW_ATL_B0_RATE_1G               BIT(4)
+#define HW_ATL_B0_RATE_100M             BIT(5)
+
+#define HW_ATL_B0_TXBUF_MAX  160U
+#define HW_ATL_B0_RXBUF_MAX  320U
+
+#define HW_ATL_B0_RSS_REDIRECTION_MAX 64U
+#define HW_ATL_B0_RSS_REDIRECTION_BITS 3U
+#define HW_ATL_B0_RSS_HASHKEY_BITS 320U
+
+#define HW_ATL_B0_TCRSS_4_8  1
+#define HW_ATL_B0_TC_MAX 1U
+#define HW_ATL_B0_RSS_MAX 8U
+
+#define HW_ATL_B0_LRO_RXD_MAX 2U
+#define HW_ATL_B0_RS_SLIP_ENABLED  0U
+
+/* (256k -1(max pay_len) - 54(header)) */
+#define HAL_ATL_B0_LSO_MAX_SEGMENT_SIZE 262089U
+
+/* (256k -1(max pay_len) - 74(header)) */
+#define HAL_ATL_B0_LSO_IPV6_MAX_SEGMENT_SIZE 262069U
+
+#define HW_ATL_B0_CHIP_REVISION_B0      0xA0U
+#define HW_ATL_B0_CHIP_REVISION_UNKNOWN 0xFFU
+
+#define HW_ATL_B0_FW_SEMA_RAM           0x2U
+
+#define HW_ATL_B0_TXC_LEN_TUNLEN    (0x0000FF00)
+#define HW_ATL_B0_TXC_LEN_OUTLEN    (0xFFFF0000)
+
+#define HW_ATL_B0_TXC_CTL_DESC_TYPE (0x00000007)
+#define HW_ATL_B0_TXC_CTL_CTX_ID    (0x00000008)
+#define HW_ATL_B0_TXC_CTL_VLAN      (0x000FFFF0)
+#define HW_ATL_B0_TXC_CTL_CMD       (0x00F00000)
+#define HW_ATL_B0_TXC_CTL_L2LEN     (0x7F000000)
+
+#define HW_ATL_B0_TXC_CTL_L3LEN     (0x80000000)	/* L3LEN lsb */
+#define HW_ATL_B0_TXC_LEN2_L3LEN    (0x000000FF)	/* L3LE upper bits */
+#define HW_ATL_B0_TXC_LEN2_L4LEN    (0x0000FF00)
+#define HW_ATL_B0_TXC_LEN2_MSSLEN   (0xFFFF0000)
+
+#define HW_ATL_B0_RXD_DD    (0x1)
+#define HW_ATL_B0_RXD_NCEA0 (0x1)
+
+#define HW_ATL_B0_RXD_WB_STAT_RSSTYPE (0x0000000F)
+#define HW_ATL_B0_RXD_WB_STAT_PKTTYPE (0x00000FF0)
+#define HW_ATL_B0_RXD_WB_STAT_RXCTRL  (0x00180000)
+#define HW_ATL_B0_RXD_WB_STAT_SPLHDR  (0x00200000)
+#define HW_ATL_B0_RXD_WB_STAT_HDRLEN  (0xFFC00000)
+
+#define HW_ATL_B0_RXD_WB_STAT2_DD      (0x0001)
+#define HW_ATL_B0_RXD_WB_STAT2_EOP     (0x0002)
+#define HW_ATL_B0_RXD_WB_STAT2_RXSTAT  (0x003C)
+#define HW_ATL_B0_RXD_WB_STAT2_MACERR  (0x0004)
+#define HW_ATL_B0_RXD_WB_STAT2_IP4ERR  (0x0008)
+#define HW_ATL_B0_RXD_WB_STAT2_TCPUPDERR  (0x0010)
+#define HW_ATL_B0_RXD_WB_STAT2_RXESTAT (0x0FC0)
+#define HW_ATL_B0_RXD_WB_STAT2_RSCCNT  (0xF000)
+
+#define L2_FILTER_ACTION_DISCARD (0x0)
+#define L2_FILTER_ACTION_HOST    (0x1)
+
+#define HW_ATL_B0_UCP_0X370_REG  (0x370)
+
+#define HW_ATL_B0_FLUSH() AQ_HW_READ_REG(self, 0x10)
+
+#define HW_ATL_B0_FW_VER_EXPECTED 0x01050006U
+
+/* Hardware tx descriptor */
+struct __packed hw_atl_txd_s {
+	u64 buf_addr;
+	u32 ctl;
+	u32 ctl2; /* 63..46 - payload length, 45 - ctx enable, 44 - ctx index */
+};
+
+/* Hardware tx context descriptor */
+struct __packed hw_atl_txc_s {
+	u32 rsvd;
+	u32 len;
+	u32 ctl;
+	u32 len2;
+};
+
+/* Hardware rx descriptor */
+struct __packed hw_atl_rxd_s {
+	u64 buf_addr;
+	u64 hdr_addr;
+};
+
+/* Hardware rx descriptor writeback */
+struct __packed hw_atl_rxd_wb_s {
+	u32 type;
+	u32 rss_hash;
+	u16 status;
+	u16 pkt_len;
+	u16 next_desc_ptr;
+	u16 vlan;
+};
+
+/* HW layer capabilities */
+static struct aq_hw_caps_s hw_atl_b0_hw_caps_ = {
+	.ports = 1U,
+	.is_64_dma = true,
+	.msix_irqs = 4U,
+	.irq_mask = ~0U,
+	.vecs = HW_ATL_B0_RSS_MAX,
+	.tcs = HW_ATL_B0_TC_MAX,
+	.rxd_alignment = 1U,
+	.rxd_size = HW_ATL_B0_RXD_SIZE,
+	.rxds = 8U * 1024U,
+	.txd_alignment = 1U,
+	.txd_size = HW_ATL_B0_TXD_SIZE,
+	.txds = 8U * 1024U,
+	.txhwb_alignment = 4096U,
+	.tx_rings = HW_ATL_B0_TX_RINGS,
+	.rx_rings = HW_ATL_B0_RX_RINGS,
+	.hw_features = NETIF_F_HW_CSUM |
+			NETIF_F_RXHASH |
+			NETIF_F_SG |
+			NETIF_F_TSO |
+			NETIF_F_LRO,
+	.hw_priv_flags = IFF_UNICAST_FLT,
+	.link_speed_msk = (HW_ATL_B0_RATE_10G |
+			HW_ATL_B0_RATE_5G |
+			HW_ATL_B0_RATE_2G5 |
+			HW_ATL_B0_RATE_1G |
+			HW_ATL_B0_RATE_100M),
+	.flow_control = true,
+	.mtu = HW_ATL_B0_MTU_JUMBO,
+	.mac_regs_count = 88,
+	.fw_ver_expected = HW_ATL_B0_FW_VER_EXPECTED,
+};
+
+#endif /* HW_ATL_B0_INTERNAL_H */

drivers/net/ethernet/aquantia/atlantic/ver.h

+/*
+ * 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.
+ */
+
+#ifndef VER_H
+#define VER_H
+
+#define NIC_MAJOR_DRIVER_VERSION           1
+#define NIC_MINOR_DRIVER_VERSION           5
+#define NIC_BUILD_DRIVER_VERSION           345
+#define NIC_REVISION_DRIVER_VERSION        0
+
+#endif /* VER_H */