sfc: Move the Solarflare drivers

Moves the Solarflare drivers into drivers/net/ethernet/sfc/ and
make the necessary Kconfig and Makefile changes.

CC: Steve Hodgson <shodgson@solarflare.com>
CC: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 1060 deletions

diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
deleted file mode 100644
index b8e251a1ee48..000000000000
--- a/drivers/net/sfc/net_driver.h
+++ /dev/null
@@ -1,1060 +0,0 @@
-/****************************************************************************
- * Driver for Solarflare Solarstorm network controllers and boards
- * Copyright 2005-2006 Fen Systems Ltd.
- * Copyright 2005-2011 Solarflare Communications Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation, incorporated herein by reference.
- */
-
-/* Common definitions for all Efx net driver code */
-
-#ifndef EFX_NET_DRIVER_H
-#define EFX_NET_DRIVER_H
-
-#if defined(EFX_ENABLE_DEBUG) && !defined(DEBUG)
-#define DEBUG
-#endif
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/if_vlan.h>
-#include <linux/timer.h>
-#include <linux/mdio.h>
-#include <linux/list.h>
-#include <linux/pci.h>
-#include <linux/device.h>
-#include <linux/highmem.h>
-#include <linux/workqueue.h>
-#include <linux/vmalloc.h>
-#include <linux/i2c.h>
-
-#include "enum.h"
-#include "bitfield.h"
-
-/**************************************************************************
- *
- * Build definitions
- *
- **************************************************************************/
-
-#define EFX_DRIVER_VERSION	"3.1"
-
-#ifdef EFX_ENABLE_DEBUG
-#define EFX_BUG_ON_PARANOID(x) BUG_ON(x)
-#define EFX_WARN_ON_PARANOID(x) WARN_ON(x)
-#else
-#define EFX_BUG_ON_PARANOID(x) do {} while (0)
-#define EFX_WARN_ON_PARANOID(x) do {} while (0)
-#endif
-
-/**************************************************************************
- *
- * Efx data structures
- *
- **************************************************************************/
-
-#define EFX_MAX_CHANNELS 32
-#define EFX_MAX_RX_QUEUES EFX_MAX_CHANNELS
-
-/* Checksum generation is a per-queue option in hardware, so each
- * queue visible to the networking core is backed by two hardware TX
- * queues. */
-#define EFX_MAX_TX_TC		2
-#define EFX_MAX_CORE_TX_QUEUES	(EFX_MAX_TX_TC * EFX_MAX_CHANNELS)
-#define EFX_TXQ_TYPE_OFFLOAD	1	/* flag */
-#define EFX_TXQ_TYPE_HIGHPRI	2	/* flag */
-#define EFX_TXQ_TYPES		4
-#define EFX_MAX_TX_QUEUES	(EFX_TXQ_TYPES * EFX_MAX_CHANNELS)
-
-/**
- * struct efx_special_buffer - An Efx special buffer
- * @addr: CPU base address of the buffer
- * @dma_addr: DMA base address of the buffer
- * @len: Buffer length, in bytes
- * @index: Buffer index within controller;s buffer table
- * @entries: Number of buffer table entries
- *
- * Special buffers are used for the event queues and the TX and RX
- * descriptor queues for each channel.  They are *not* used for the
- * actual transmit and receive buffers.
- */
-struct efx_special_buffer {
-	void *addr;
-	dma_addr_t dma_addr;
-	unsigned int len;
-	int index;
-	int entries;
-};
-
-enum efx_flush_state {
-	FLUSH_NONE,
-	FLUSH_PENDING,
-	FLUSH_FAILED,
-	FLUSH_DONE,
-};
-
-/**
- * struct efx_tx_buffer - An Efx TX buffer
- * @skb: The associated socket buffer.
- *	Set only on the final fragment of a packet; %NULL for all other
- *	fragments.  When this fragment completes, then we can free this
- *	skb.
- * @tsoh: The associated TSO header structure, or %NULL if this
- *	buffer is not a TSO header.
- * @dma_addr: DMA address of the fragment.
- * @len: Length of this fragment.
- *	This field is zero when the queue slot is empty.
- * @continuation: True if this fragment is not the end of a packet.
- * @unmap_single: True if pci_unmap_single should be used.
- * @unmap_len: Length of this fragment to unmap
- */
-struct efx_tx_buffer {
-	const struct sk_buff *skb;
-	struct efx_tso_header *tsoh;
-	dma_addr_t dma_addr;
-	unsigned short len;
-	bool continuation;
-	bool unmap_single;
-	unsigned short unmap_len;
-};
-
-/**
- * struct efx_tx_queue - An Efx TX queue
- *
- * This is a ring buffer of TX fragments.
- * Since the TX completion path always executes on the same
- * CPU and the xmit path can operate on different CPUs,
- * performance is increased by ensuring that the completion
- * path and the xmit path operate on different cache lines.
- * This is particularly important if the xmit path is always
- * executing on one CPU which is different from the completion
- * path.  There is also a cache line for members which are
- * read but not written on the fast path.
- *
- * @efx: The associated Efx NIC
- * @queue: DMA queue number
- * @channel: The associated channel
- * @core_txq: The networking core TX queue structure
- * @buffer: The software buffer ring
- * @txd: The hardware descriptor ring
- * @ptr_mask: The size of the ring minus 1.
- * @initialised: Has hardware queue been initialised?
- * @flushed: Used when handling queue flushing
- * @read_count: Current read pointer.
- *	This is the number of buffers that have been removed from both rings.
- * @old_write_count: The value of @write_count when last checked.
- *	This is here for performance reasons.  The xmit path will
- *	only get the up-to-date value of @write_count if this
- *	variable indicates that the queue is empty.  This is to
- *	avoid cache-line ping-pong between the xmit path and the
- *	completion path.
- * @insert_count: Current insert pointer
- *	This is the number of buffers that have been added to the
- *	software ring.
- * @write_count: Current write pointer
- *	This is the number of buffers that have been added to the
- *	hardware ring.
- * @old_read_count: The value of read_count when last checked.
- *	This is here for performance reasons.  The xmit path will
- *	only get the up-to-date value of read_count if this
- *	variable indicates that the queue is full.  This is to
- *	avoid cache-line ping-pong between the xmit path and the
- *	completion path.
- * @tso_headers_free: A list of TSO headers allocated for this TX queue
- *	that are not in use, and so available for new TSO sends. The list
- *	is protected by the TX queue lock.
- * @tso_bursts: Number of times TSO xmit invoked by kernel
- * @tso_long_headers: Number of packets with headers too long for standard
- *	blocks
- * @tso_packets: Number of packets via the TSO xmit path
- * @pushes: Number of times the TX push feature has been used
- * @empty_read_count: If the completion path has seen the queue as empty
- *	and the transmission path has not yet checked this, the value of
- *	@read_count bitwise-added to %EFX_EMPTY_COUNT_VALID; otherwise 0.
- */
-struct efx_tx_queue {
-	/* Members which don't change on the fast path */
-	struct efx_nic *efx ____cacheline_aligned_in_smp;
-	unsigned queue;
-	struct efx_channel *channel;
-	struct netdev_queue *core_txq;
-	struct efx_tx_buffer *buffer;
-	struct efx_special_buffer txd;
-	unsigned int ptr_mask;
-	bool initialised;
-	enum efx_flush_state flushed;
-
-	/* Members used mainly on the completion path */
-	unsigned int read_count ____cacheline_aligned_in_smp;
-	unsigned int old_write_count;
-
-	/* Members used only on the xmit path */
-	unsigned int insert_count ____cacheline_aligned_in_smp;
-	unsigned int write_count;
-	unsigned int old_read_count;
-	struct efx_tso_header *tso_headers_free;
-	unsigned int tso_bursts;
-	unsigned int tso_long_headers;
-	unsigned int tso_packets;
-	unsigned int pushes;
-
-	/* Members shared between paths and sometimes updated */
-	unsigned int empty_read_count ____cacheline_aligned_in_smp;
-#define EFX_EMPTY_COUNT_VALID 0x80000000
-};
-
-/**
- * struct efx_rx_buffer - An Efx RX data buffer
- * @dma_addr: DMA base address of the buffer
- * @skb: The associated socket buffer, if any.
- *	If both this and page are %NULL, the buffer slot is currently free.
- * @page: The associated page buffer, if any.
- *	If both this and skb are %NULL, the buffer slot is currently free.
- * @len: Buffer length, in bytes.
- * @is_page: Indicates if @page is valid. If false, @skb is valid.
- */
-struct efx_rx_buffer {
-	dma_addr_t dma_addr;
-	union {
-		struct sk_buff *skb;
-		struct page *page;
-	} u;
-	unsigned int len;
-	bool is_page;
-};
-
-/**
- * struct efx_rx_page_state - Page-based rx buffer state
- *
- * Inserted at the start of every page allocated for receive buffers.
- * Used to facilitate sharing dma mappings between recycled rx buffers
- * and those passed up to the kernel.
- *
- * @refcnt: Number of struct efx_rx_buffer's referencing this page.
- *	When refcnt falls to zero, the page is unmapped for dma
- * @dma_addr: The dma address of this page.
- */
-struct efx_rx_page_state {
-	unsigned refcnt;
-	dma_addr_t dma_addr;
-
-	unsigned int __pad[0] ____cacheline_aligned;
-};
-
-/**
- * struct efx_rx_queue - An Efx RX queue
- * @efx: The associated Efx NIC
- * @buffer: The software buffer ring
- * @rxd: The hardware descriptor ring
- * @ptr_mask: The size of the ring minus 1.
- * @added_count: Number of buffers added to the receive queue.
- * @notified_count: Number of buffers given to NIC (<= @added_count).
- * @removed_count: Number of buffers removed from the receive queue.
- * @max_fill: RX descriptor maximum fill level (<= ring size)
- * @fast_fill_trigger: RX descriptor fill level that will trigger a fast fill
- *	(<= @max_fill)
- * @fast_fill_limit: The level to which a fast fill will fill
- *	(@fast_fill_trigger <= @fast_fill_limit <= @max_fill)
- * @min_fill: RX descriptor minimum non-zero fill level.
- *	This records the minimum fill level observed when a ring
- *	refill was triggered.
- * @alloc_page_count: RX allocation strategy counter.
- * @alloc_skb_count: RX allocation strategy counter.
- * @slow_fill: Timer used to defer efx_nic_generate_fill_event().
- * @flushed: Use when handling queue flushing
- */
-struct efx_rx_queue {
-	struct efx_nic *efx;
-	struct efx_rx_buffer *buffer;
-	struct efx_special_buffer rxd;
-	unsigned int ptr_mask;
-
-	int added_count;
-	int notified_count;
-	int removed_count;
-	unsigned int max_fill;
-	unsigned int fast_fill_trigger;
-	unsigned int fast_fill_limit;
-	unsigned int min_fill;
-	unsigned int min_overfill;
-	unsigned int alloc_page_count;
-	unsigned int alloc_skb_count;
-	struct timer_list slow_fill;
-	unsigned int slow_fill_count;
-
-	enum efx_flush_state flushed;
-};
-
-/**
- * struct efx_buffer - An Efx general-purpose buffer
- * @addr: host base address of the buffer
- * @dma_addr: DMA base address of the buffer
- * @len: Buffer length, in bytes
- *
- * The NIC uses these buffers for its interrupt status registers and
- * MAC stats dumps.
- */
-struct efx_buffer {
-	void *addr;
-	dma_addr_t dma_addr;
-	unsigned int len;
-};
-
-
-enum efx_rx_alloc_method {
-	RX_ALLOC_METHOD_AUTO = 0,
-	RX_ALLOC_METHOD_SKB = 1,
-	RX_ALLOC_METHOD_PAGE = 2,
-};
-
-/**
- * struct efx_channel - An Efx channel
- *
- * A channel comprises an event queue, at least one TX queue, at least
- * one RX queue, and an associated tasklet for processing the event
- * queue.
- *
- * @efx: Associated Efx NIC
- * @channel: Channel instance number
- * @enabled: Channel enabled indicator
- * @irq: IRQ number (MSI and MSI-X only)
- * @irq_moderation: IRQ moderation value (in hardware ticks)
- * @napi_dev: Net device used with NAPI
- * @napi_str: NAPI control structure
- * @work_pending: Is work pending via NAPI?
- * @eventq: Event queue buffer
- * @eventq_mask: Event queue pointer mask
- * @eventq_read_ptr: Event queue read pointer
- * @last_eventq_read_ptr: Last event queue read pointer value.
- * @irq_count: Number of IRQs since last adaptive moderation decision
- * @irq_mod_score: IRQ moderation score
- * @rx_alloc_level: Watermark based heuristic counter for pushing descriptors
- *	and diagnostic counters
- * @rx_alloc_push_pages: RX allocation method currently in use for pushing
- *	descriptors
- * @n_rx_tobe_disc: Count of RX_TOBE_DISC errors
- * @n_rx_ip_hdr_chksum_err: Count of RX IP header checksum errors
- * @n_rx_tcp_udp_chksum_err: Count of RX TCP and UDP checksum errors
- * @n_rx_mcast_mismatch: Count of unmatched multicast frames
- * @n_rx_frm_trunc: Count of RX_FRM_TRUNC errors
- * @n_rx_overlength: Count of RX_OVERLENGTH errors
- * @n_skbuff_leaks: Count of skbuffs leaked due to RX overrun
- * @rx_queue: RX queue for this channel
- * @tx_queue: TX queues for this channel
- */
-struct efx_channel {
-	struct efx_nic *efx;
-	int channel;
-	bool enabled;
-	int irq;
-	unsigned int irq_moderation;
-	struct net_device *napi_dev;
-	struct napi_struct napi_str;
-	bool work_pending;
-	struct efx_special_buffer eventq;
-	unsigned int eventq_mask;
-	unsigned int eventq_read_ptr;
-	unsigned int last_eventq_read_ptr;
-
-	unsigned int irq_count;
-	unsigned int irq_mod_score;
-#ifdef CONFIG_RFS_ACCEL
-	unsigned int rfs_filters_added;
-#endif
-
-	int rx_alloc_level;
-	int rx_alloc_push_pages;
-
-	unsigned n_rx_tobe_disc;
-	unsigned n_rx_ip_hdr_chksum_err;
-	unsigned n_rx_tcp_udp_chksum_err;
-	unsigned n_rx_mcast_mismatch;
-	unsigned n_rx_frm_trunc;
-	unsigned n_rx_overlength;
-	unsigned n_skbuff_leaks;
-
-	/* Used to pipeline received packets in order to optimise memory
-	 * access with prefetches.
-	 */
-	struct efx_rx_buffer *rx_pkt;
-	bool rx_pkt_csummed;
-
-	struct efx_rx_queue rx_queue;
-	struct efx_tx_queue tx_queue[EFX_TXQ_TYPES];
-};
-
-enum efx_led_mode {
-	EFX_LED_OFF	= 0,
-	EFX_LED_ON	= 1,
-	EFX_LED_DEFAULT	= 2
-};
-
-#define STRING_TABLE_LOOKUP(val, member) \
-	((val) < member ## _max) ? member ## _names[val] : "(invalid)"
-
-extern const char *efx_loopback_mode_names[];
-extern const unsigned int efx_loopback_mode_max;
-#define LOOPBACK_MODE(efx) \
-	STRING_TABLE_LOOKUP((efx)->loopback_mode, efx_loopback_mode)
-
-extern const char *efx_reset_type_names[];
-extern const unsigned int efx_reset_type_max;
-#define RESET_TYPE(type) \
-	STRING_TABLE_LOOKUP(type, efx_reset_type)
-
-enum efx_int_mode {
-	/* Be careful if altering to correct macro below */
-	EFX_INT_MODE_MSIX = 0,
-	EFX_INT_MODE_MSI = 1,
-	EFX_INT_MODE_LEGACY = 2,
-	EFX_INT_MODE_MAX	/* Insert any new items before this */
-};
-#define EFX_INT_MODE_USE_MSI(x) (((x)->interrupt_mode) <= EFX_INT_MODE_MSI)
-
-enum nic_state {
-	STATE_INIT = 0,
-	STATE_RUNNING = 1,
-	STATE_FINI = 2,
-	STATE_DISABLED = 3,
-	STATE_MAX,
-};
-
-/*
- * Alignment of page-allocated RX buffers
- *
- * Controls the number of bytes inserted at the start of an RX buffer.
- * This is the equivalent of NET_IP_ALIGN [which controls the alignment
- * of the skb->head for hardware DMA].
- */
-#ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
-#define EFX_PAGE_IP_ALIGN 0
-#else
-#define EFX_PAGE_IP_ALIGN NET_IP_ALIGN
-#endif
-
-/*
- * Alignment of the skb->head which wraps a page-allocated RX buffer
- *
- * The skb allocated to wrap an rx_buffer can have this alignment. Since
- * the data is memcpy'd from the rx_buf, it does not need to be equal to
- * EFX_PAGE_IP_ALIGN.
- */
-#define EFX_PAGE_SKB_ALIGN 2
-
-/* Forward declaration */
-struct efx_nic;
-
-/* Pseudo bit-mask flow control field */
-#define EFX_FC_RX	FLOW_CTRL_RX
-#define EFX_FC_TX	FLOW_CTRL_TX
-#define EFX_FC_AUTO	4
-
-/**
- * struct efx_link_state - Current state of the link
- * @up: Link is up
- * @fd: Link is full-duplex
- * @fc: Actual flow control flags
- * @speed: Link speed (Mbps)
- */
-struct efx_link_state {
-	bool up;
-	bool fd;
-	u8 fc;
-	unsigned int speed;
-};
-
-static inline bool efx_link_state_equal(const struct efx_link_state *left,
-					const struct efx_link_state *right)
-{
-	return left->up == right->up && left->fd == right->fd &&
-		left->fc == right->fc && left->speed == right->speed;
-}
-
-/**
- * struct efx_mac_operations - Efx MAC operations table
- * @reconfigure: Reconfigure MAC. Serialised by the mac_lock
- * @update_stats: Update statistics
- * @check_fault: Check fault state. True if fault present.
- */
-struct efx_mac_operations {
-	int (*reconfigure) (struct efx_nic *efx);
-	void (*update_stats) (struct efx_nic *efx);
-	bool (*check_fault)(struct efx_nic *efx);
-};
-
-/**
- * struct efx_phy_operations - Efx PHY operations table
- * @probe: Probe PHY and initialise efx->mdio.mode_support, efx->mdio.mmds,
- *	efx->loopback_modes.
- * @init: Initialise PHY
- * @fini: Shut down PHY
- * @reconfigure: Reconfigure PHY (e.g. for new link parameters)
- * @poll: Update @link_state and report whether it changed.
- *	Serialised by the mac_lock.
- * @get_settings: Get ethtool settings. Serialised by the mac_lock.
- * @set_settings: Set ethtool settings. Serialised by the mac_lock.
- * @set_npage_adv: Set abilities advertised in (Extended) Next Page
- *	(only needed where AN bit is set in mmds)
- * @test_alive: Test that PHY is 'alive' (online)
- * @test_name: Get the name of a PHY-specific test/result
- * @run_tests: Run tests and record results as appropriate (offline).
- *	Flags are the ethtool tests flags.
- */
-struct efx_phy_operations {
-	int (*probe) (struct efx_nic *efx);
-	int (*init) (struct efx_nic *efx);
-	void (*fini) (struct efx_nic *efx);
-	void (*remove) (struct efx_nic *efx);
-	int (*reconfigure) (struct efx_nic *efx);
-	bool (*poll) (struct efx_nic *efx);
-	void (*get_settings) (struct efx_nic *efx,
-			      struct ethtool_cmd *ecmd);
-	int (*set_settings) (struct efx_nic *efx,
-			     struct ethtool_cmd *ecmd);
-	void (*set_npage_adv) (struct efx_nic *efx, u32);
-	int (*test_alive) (struct efx_nic *efx);
-	const char *(*test_name) (struct efx_nic *efx, unsigned int index);
-	int (*run_tests) (struct efx_nic *efx, int *results, unsigned flags);
-};
-
-/**
- * @enum efx_phy_mode - PHY operating mode flags
- * @PHY_MODE_NORMAL: on and should pass traffic
- * @PHY_MODE_TX_DISABLED: on with TX disabled
- * @PHY_MODE_LOW_POWER: set to low power through MDIO
- * @PHY_MODE_OFF: switched off through external control
- * @PHY_MODE_SPECIAL: on but will not pass traffic
- */
-enum efx_phy_mode {
-	PHY_MODE_NORMAL		= 0,
-	PHY_MODE_TX_DISABLED	= 1,
-	PHY_MODE_LOW_POWER	= 2,
-	PHY_MODE_OFF		= 4,
-	PHY_MODE_SPECIAL	= 8,
-};
-
-static inline bool efx_phy_mode_disabled(enum efx_phy_mode mode)
-{
-	return !!(mode & ~PHY_MODE_TX_DISABLED);
-}
-
-/*
- * Efx extended statistics
- *
- * Not all statistics are provided by all supported MACs.  The purpose
- * is this structure is to contain the raw statistics provided by each
- * MAC.
- */
-struct efx_mac_stats {
-	u64 tx_bytes;
-	u64 tx_good_bytes;
-	u64 tx_bad_bytes;
-	unsigned long tx_packets;
-	unsigned long tx_bad;
-	unsigned long tx_pause;
-	unsigned long tx_control;
-	unsigned long tx_unicast;
-	unsigned long tx_multicast;
-	unsigned long tx_broadcast;
-	unsigned long tx_lt64;
-	unsigned long tx_64;
-	unsigned long tx_65_to_127;
-	unsigned long tx_128_to_255;
-	unsigned long tx_256_to_511;
-	unsigned long tx_512_to_1023;
-	unsigned long tx_1024_to_15xx;
-	unsigned long tx_15xx_to_jumbo;
-	unsigned long tx_gtjumbo;
-	unsigned long tx_collision;
-	unsigned long tx_single_collision;
-	unsigned long tx_multiple_collision;
-	unsigned long tx_excessive_collision;
-	unsigned long tx_deferred;
-	unsigned long tx_late_collision;
-	unsigned long tx_excessive_deferred;
-	unsigned long tx_non_tcpudp;
-	unsigned long tx_mac_src_error;
-	unsigned long tx_ip_src_error;
-	u64 rx_bytes;
-	u64 rx_good_bytes;
-	u64 rx_bad_bytes;
-	unsigned long rx_packets;
-	unsigned long rx_good;
-	unsigned long rx_bad;
-	unsigned long rx_pause;
-	unsigned long rx_control;
-	unsigned long rx_unicast;
-	unsigned long rx_multicast;
-	unsigned long rx_broadcast;
-	unsigned long rx_lt64;
-	unsigned long rx_64;
-	unsigned long rx_65_to_127;
-	unsigned long rx_128_to_255;
-	unsigned long rx_256_to_511;
-	unsigned long rx_512_to_1023;
-	unsigned long rx_1024_to_15xx;
-	unsigned long rx_15xx_to_jumbo;
-	unsigned long rx_gtjumbo;
-	unsigned long rx_bad_lt64;
-	unsigned long rx_bad_64_to_15xx;
-	unsigned long rx_bad_15xx_to_jumbo;
-	unsigned long rx_bad_gtjumbo;
-	unsigned long rx_overflow;
-	unsigned long rx_missed;
-	unsigned long rx_false_carrier;
-	unsigned long rx_symbol_error;
-	unsigned long rx_align_error;
-	unsigned long rx_length_error;
-	unsigned long rx_internal_error;
-	unsigned long rx_good_lt64;
-};
-
-/* Number of bits used in a multicast filter hash address */
-#define EFX_MCAST_HASH_BITS 8
-
-/* Number of (single-bit) entries in a multicast filter hash */
-#define EFX_MCAST_HASH_ENTRIES (1 << EFX_MCAST_HASH_BITS)
-
-/* An Efx multicast filter hash */
-union efx_multicast_hash {
-	u8 byte[EFX_MCAST_HASH_ENTRIES / 8];
-	efx_oword_t oword[EFX_MCAST_HASH_ENTRIES / sizeof(efx_oword_t) / 8];
-};
-
-struct efx_filter_state;
-
-/**
- * struct efx_nic - an Efx NIC
- * @name: Device name (net device name or bus id before net device registered)
- * @pci_dev: The PCI device
- * @type: Controller type attributes
- * @legacy_irq: IRQ number
- * @legacy_irq_enabled: Are IRQs enabled on NIC (INT_EN_KER register)?
- * @workqueue: Workqueue for port reconfigures and the HW monitor.
- *	Work items do not hold and must not acquire RTNL.
- * @workqueue_name: Name of workqueue
- * @reset_work: Scheduled reset workitem
- * @membase_phys: Memory BAR value as physical address
- * @membase: Memory BAR value
- * @interrupt_mode: Interrupt mode
- * @irq_rx_adaptive: Adaptive IRQ moderation enabled for RX event queues
- * @irq_rx_moderation: IRQ moderation time for RX event queues
- * @msg_enable: Log message enable flags
- * @state: Device state flag. Serialised by the rtnl_lock.
- * @reset_pending: Bitmask for pending resets
- * @tx_queue: TX DMA queues
- * @rx_queue: RX DMA queues
- * @channel: Channels
- * @channel_name: Names for channels and their IRQs
- * @rxq_entries: Size of receive queues requested by user.
- * @txq_entries: Size of transmit queues requested by user.
- * @next_buffer_table: First available buffer table id
- * @n_channels: Number of channels in use
- * @n_rx_channels: Number of channels used for RX (= number of RX queues)
- * @n_tx_channels: Number of channels used for TX
- * @rx_buffer_len: RX buffer length
- * @rx_buffer_order: Order (log2) of number of pages for each RX buffer
- * @rx_hash_key: Toeplitz hash key for RSS
- * @rx_indir_table: Indirection table for RSS
- * @int_error_count: Number of internal errors seen recently
- * @int_error_expire: Time at which error count will be expired
- * @irq_status: Interrupt status buffer
- * @irq_zero_count: Number of legacy IRQs seen with queue flags == 0
- * @fatal_irq_level: IRQ level (bit number) used for serious errors
- * @mtd_list: List of MTDs attached to the NIC
- * @nic_data: Hardware dependent state
- * @mac_lock: MAC access lock. Protects @port_enabled, @phy_mode,
- *	efx_monitor() and efx_reconfigure_port()
- * @port_enabled: Port enabled indicator.
- *	Serialises efx_stop_all(), efx_start_all(), efx_monitor() and
- *	efx_mac_work() with kernel interfaces. Safe to read under any
- *	one of the rtnl_lock, mac_lock, or netif_tx_lock, but all three must
- *	be held to modify it.
- * @port_initialized: Port initialized?
- * @net_dev: Operating system network device. Consider holding the rtnl lock
- * @stats_buffer: DMA buffer for statistics
- * @mac_op: MAC interface
- * @phy_type: PHY type
- * @phy_op: PHY interface
- * @phy_data: PHY private data (including PHY-specific stats)
- * @mdio: PHY MDIO interface
- * @mdio_bus: PHY MDIO bus ID (only used by Siena)
- * @phy_mode: PHY operating mode. Serialised by @mac_lock.
- * @link_advertising: Autonegotiation advertising flags
- * @link_state: Current state of the link
- * @n_link_state_changes: Number of times the link has changed state
- * @promiscuous: Promiscuous flag. Protected by netif_tx_lock.
- * @multicast_hash: Multicast hash table
- * @wanted_fc: Wanted flow control flags
- * @mac_work: Work item for changing MAC promiscuity and multicast hash
- * @loopback_mode: Loopback status
- * @loopback_modes: Supported loopback mode bitmask
- * @loopback_selftest: Offline self-test private state
- * @monitor_work: Hardware monitor workitem
- * @biu_lock: BIU (bus interface unit) lock
- * @last_irq_cpu: Last CPU to handle interrupt.
- *	This register is written with the SMP processor ID whenever an
- *	interrupt is handled.  It is used by efx_nic_test_interrupt()
- *	to verify that an interrupt has occurred.
- * @n_rx_nodesc_drop_cnt: RX no descriptor drop count
- * @mac_stats: MAC statistics. These include all statistics the MACs
- *	can provide.  Generic code converts these into a standard
- *	&struct net_device_stats.
- * @stats_lock: Statistics update lock. Serialises statistics fetches
- *
- * This is stored in the private area of the &struct net_device.
- */
-struct efx_nic {
-	/* The following fields should be written very rarely */
-
-	char name[IFNAMSIZ];
-	struct pci_dev *pci_dev;
-	const struct efx_nic_type *type;
-	int legacy_irq;
-	bool legacy_irq_enabled;
-	struct workqueue_struct *workqueue;
-	char workqueue_name[16];
-	struct work_struct reset_work;
-	resource_size_t membase_phys;
-	void __iomem *membase;
-
-	enum efx_int_mode interrupt_mode;
-	bool irq_rx_adaptive;
-	unsigned int irq_rx_moderation;
-	u32 msg_enable;
-
-	enum nic_state state;
-	unsigned long reset_pending;
-
-	struct efx_channel *channel[EFX_MAX_CHANNELS];
-	char channel_name[EFX_MAX_CHANNELS][IFNAMSIZ + 6];
-
-	unsigned rxq_entries;
-	unsigned txq_entries;
-	unsigned next_buffer_table;
-	unsigned n_channels;
-	unsigned n_rx_channels;
-	unsigned tx_channel_offset;
-	unsigned n_tx_channels;
-	unsigned int rx_buffer_len;
-	unsigned int rx_buffer_order;
-	u8 rx_hash_key[40];
-	u32 rx_indir_table[128];
-
-	unsigned int_error_count;
-	unsigned long int_error_expire;
-
-	struct efx_buffer irq_status;
-	unsigned irq_zero_count;
-	unsigned fatal_irq_level;
-
-#ifdef CONFIG_SFC_MTD
-	struct list_head mtd_list;
-#endif
-
-	void *nic_data;
-
-	struct mutex mac_lock;
-	struct work_struct mac_work;
-	bool port_enabled;
-
-	bool port_initialized;
-	struct net_device *net_dev;
-
-	struct efx_buffer stats_buffer;
-
-	const struct efx_mac_operations *mac_op;
-
-	unsigned int phy_type;
-	const struct efx_phy_operations *phy_op;
-	void *phy_data;
-	struct mdio_if_info mdio;
-	unsigned int mdio_bus;
-	enum efx_phy_mode phy_mode;
-
-	u32 link_advertising;
-	struct efx_link_state link_state;
-	unsigned int n_link_state_changes;
-
-	bool promiscuous;
-	union efx_multicast_hash multicast_hash;
-	u8 wanted_fc;
-
-	atomic_t rx_reset;
-	enum efx_loopback_mode loopback_mode;
-	u64 loopback_modes;
-
-	void *loopback_selftest;
-
-	struct efx_filter_state *filter_state;
-
-	/* The following fields may be written more often */
-
-	struct delayed_work monitor_work ____cacheline_aligned_in_smp;
-	spinlock_t biu_lock;
-	volatile signed int last_irq_cpu;
-	unsigned n_rx_nodesc_drop_cnt;
-	struct efx_mac_stats mac_stats;
-	spinlock_t stats_lock;
-};
-
-static inline int efx_dev_registered(struct efx_nic *efx)
-{
-	return efx->net_dev->reg_state == NETREG_REGISTERED;
-}
-
-/* Net device name, for inclusion in log messages if it has been registered.
- * Use efx->name not efx->net_dev->name so that races with (un)registration
- * are harmless.
- */
-static inline const char *efx_dev_name(struct efx_nic *efx)
-{
-	return efx_dev_registered(efx) ? efx->name : "";
-}
-
-static inline unsigned int efx_port_num(struct efx_nic *efx)
-{
-	return efx->net_dev->dev_id;
-}
-
-/**
- * struct efx_nic_type - Efx device type definition
- * @probe: Probe the controller
- * @remove: Free resources allocated by probe()
- * @init: Initialise the controller
- * @fini: Shut down the controller
- * @monitor: Periodic function for polling link state and hardware monitor
- * @map_reset_reason: Map ethtool reset reason to a reset method
- * @map_reset_flags: Map ethtool reset flags to a reset method, if possible
- * @reset: Reset the controller hardware and possibly the PHY.  This will
- *	be called while the controller is uninitialised.
- * @probe_port: Probe the MAC and PHY
- * @remove_port: Free resources allocated by probe_port()
- * @handle_global_event: Handle a "global" event (may be %NULL)
- * @prepare_flush: Prepare the hardware for flushing the DMA queues
- * @update_stats: Update statistics not provided by event handling
- * @start_stats: Start the regular fetching of statistics
- * @stop_stats: Stop the regular fetching of statistics
- * @set_id_led: Set state of identifying LED or revert to automatic function
- * @push_irq_moderation: Apply interrupt moderation value
- * @push_multicast_hash: Apply multicast hash table
- * @reconfigure_port: Push loopback/power/txdis changes to the MAC and PHY
- * @get_wol: Get WoL configuration from driver state
- * @set_wol: Push WoL configuration to the NIC
- * @resume_wol: Synchronise WoL state between driver and MC (e.g. after resume)
- * @test_registers: Test read/write functionality of control registers
- * @test_nvram: Test validity of NVRAM contents
- * @default_mac_ops: efx_mac_operations to set at startup
- * @revision: Hardware architecture revision
- * @mem_map_size: Memory BAR mapped size
- * @txd_ptr_tbl_base: TX descriptor ring base address
- * @rxd_ptr_tbl_base: RX descriptor ring base address
- * @buf_tbl_base: Buffer table base address
- * @evq_ptr_tbl_base: Event queue pointer table base address
- * @evq_rptr_tbl_base: Event queue read-pointer table base address
- * @max_dma_mask: Maximum possible DMA mask
- * @rx_buffer_hash_size: Size of hash at start of RX buffer
- * @rx_buffer_padding: Size of padding at end of RX buffer
- * @max_interrupt_mode: Highest capability interrupt mode supported
- *	from &enum efx_init_mode.
- * @phys_addr_channels: Number of channels with physically addressed
- *	descriptors
- * @tx_dc_base: Base address in SRAM of TX queue descriptor caches
- * @rx_dc_base: Base address in SRAM of RX queue descriptor caches
- * @offload_features: net_device feature flags for protocol offload
- *	features implemented in hardware
- */
-struct efx_nic_type {
-	int (*probe)(struct efx_nic *efx);
-	void (*remove)(struct efx_nic *efx);
-	int (*init)(struct efx_nic *efx);
-	void (*fini)(struct efx_nic *efx);
-	void (*monitor)(struct efx_nic *efx);
-	enum reset_type (*map_reset_reason)(enum reset_type reason);
-	int (*map_reset_flags)(u32 *flags);
-	int (*reset)(struct efx_nic *efx, enum reset_type method);
-	int (*probe_port)(struct efx_nic *efx);
-	void (*remove_port)(struct efx_nic *efx);
-	bool (*handle_global_event)(struct efx_channel *channel, efx_qword_t *);
-	void (*prepare_flush)(struct efx_nic *efx);
-	void (*update_stats)(struct efx_nic *efx);
-	void (*start_stats)(struct efx_nic *efx);
-	void (*stop_stats)(struct efx_nic *efx);
-	void (*set_id_led)(struct efx_nic *efx, enum efx_led_mode mode);
-	void (*push_irq_moderation)(struct efx_channel *channel);
-	void (*push_multicast_hash)(struct efx_nic *efx);
-	int (*reconfigure_port)(struct efx_nic *efx);
-	void (*get_wol)(struct efx_nic *efx, struct ethtool_wolinfo *wol);
-	int (*set_wol)(struct efx_nic *efx, u32 type);
-	void (*resume_wol)(struct efx_nic *efx);
-	int (*test_registers)(struct efx_nic *efx);
-	int (*test_nvram)(struct efx_nic *efx);
-	const struct efx_mac_operations *default_mac_ops;
-
-	int revision;
-	unsigned int mem_map_size;
-	unsigned int txd_ptr_tbl_base;
-	unsigned int rxd_ptr_tbl_base;
-	unsigned int buf_tbl_base;
-	unsigned int evq_ptr_tbl_base;
-	unsigned int evq_rptr_tbl_base;
-	u64 max_dma_mask;
-	unsigned int rx_buffer_hash_size;
-	unsigned int rx_buffer_padding;
-	unsigned int max_interrupt_mode;
-	unsigned int phys_addr_channels;
-	unsigned int tx_dc_base;
-	unsigned int rx_dc_base;
-	u32 offload_features;
-};
-
-/**************************************************************************
- *
- * Prototypes and inline functions
- *
- *************************************************************************/
-
-static inline struct efx_channel *
-efx_get_channel(struct efx_nic *efx, unsigned index)
-{
-	EFX_BUG_ON_PARANOID(index >= efx->n_channels);
-	return efx->channel[index];
-}
-
-/* Iterate over all used channels */
-#define efx_for_each_channel(_channel, _efx)				\
-	for (_channel = (_efx)->channel[0];				\
-	     _channel;							\
-	     _channel = (_channel->channel + 1 < (_efx)->n_channels) ?	\
-		     (_efx)->channel[_channel->channel + 1] : NULL)
-
-static inline struct efx_tx_queue *
-efx_get_tx_queue(struct efx_nic *efx, unsigned index, unsigned type)
-{
-	EFX_BUG_ON_PARANOID(index >= efx->n_tx_channels ||
-			    type >= EFX_TXQ_TYPES);
-	return &efx->channel[efx->tx_channel_offset + index]->tx_queue[type];
-}
-
-static inline bool efx_channel_has_tx_queues(struct efx_channel *channel)
-{
-	return channel->channel - channel->efx->tx_channel_offset <
-		channel->efx->n_tx_channels;
-}
-
-static inline struct efx_tx_queue *
-efx_channel_get_tx_queue(struct efx_channel *channel, unsigned type)
-{
-	EFX_BUG_ON_PARANOID(!efx_channel_has_tx_queues(channel) ||
-			    type >= EFX_TXQ_TYPES);
-	return &channel->tx_queue[type];
-}
-
-static inline bool efx_tx_queue_used(struct efx_tx_queue *tx_queue)
-{
-	return !(tx_queue->efx->net_dev->num_tc < 2 &&
-		 tx_queue->queue & EFX_TXQ_TYPE_HIGHPRI);
-}
-
-/* Iterate over all TX queues belonging to a channel */
-#define efx_for_each_channel_tx_queue(_tx_queue, _channel)		\
-	if (!efx_channel_has_tx_queues(_channel))			\
-		;							\
-	else								\
-		for (_tx_queue = (_channel)->tx_queue;			\
-		     _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES && \
-			     efx_tx_queue_used(_tx_queue);		\
-		     _tx_queue++)
-
-/* Iterate over all possible TX queues belonging to a channel */
-#define efx_for_each_possible_channel_tx_queue(_tx_queue, _channel)	\
-	for (_tx_queue = (_channel)->tx_queue;				\
-	     _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES;		\
-	     _tx_queue++)
-
-static inline struct efx_rx_queue *
-efx_get_rx_queue(struct efx_nic *efx, unsigned index)
-{
-	EFX_BUG_ON_PARANOID(index >= efx->n_rx_channels);
-	return &efx->channel[index]->rx_queue;
-}
-
-static inline bool efx_channel_has_rx_queue(struct efx_channel *channel)
-{
-	return channel->channel < channel->efx->n_rx_channels;
-}
-
-static inline struct efx_rx_queue *
-efx_channel_get_rx_queue(struct efx_channel *channel)
-{
-	EFX_BUG_ON_PARANOID(!efx_channel_has_rx_queue(channel));
-	return &channel->rx_queue;
-}
-
-/* Iterate over all RX queues belonging to a channel */
-#define efx_for_each_channel_rx_queue(_rx_queue, _channel)		\
-	if (!efx_channel_has_rx_queue(_channel))			\
-		;							\
-	else								\
-		for (_rx_queue = &(_channel)->rx_queue;			\
-		     _rx_queue;						\
-		     _rx_queue = NULL)
-
-static inline struct efx_channel *
-efx_rx_queue_channel(struct efx_rx_queue *rx_queue)
-{
-	return container_of(rx_queue, struct efx_channel, rx_queue);
-}
-
-static inline int efx_rx_queue_index(struct efx_rx_queue *rx_queue)
-{
-	return efx_rx_queue_channel(rx_queue)->channel;
-}
-
-/* Returns a pointer to the specified receive buffer in the RX
- * descriptor queue.
- */
-static inline struct efx_rx_buffer *efx_rx_buffer(struct efx_rx_queue *rx_queue,
-						  unsigned int index)
-{
-	return &rx_queue->buffer[index];
-}
-
-/* Set bit in a little-endian bitfield */
-static inline void set_bit_le(unsigned nr, unsigned char *addr)
-{
-	addr[nr / 8] |= (1 << (nr % 8));
-}
-
-/* Clear bit in a little-endian bitfield */
-static inline void clear_bit_le(unsigned nr, unsigned char *addr)
-{
-	addr[nr / 8] &= ~(1 << (nr % 8));
-}
-
-
-/**
- * EFX_MAX_FRAME_LEN - calculate maximum frame length
- *
- * This calculates the maximum frame length that will be used for a
- * given MTU.  The frame length will be equal to the MTU plus a
- * constant amount of header space and padding.  This is the quantity
- * that the net driver will program into the MAC as the maximum frame
- * length.
- *
- * The 10G MAC requires 8-byte alignment on the frame
- * length, so we round up to the nearest 8.
- *
- * Re-clocking by the XGXS on RX can reduce an IPG to 32 bits (half an
- * XGMII cycle).  If the frame length reaches the maximum value in the
- * same cycle, the XMAC can miss the IPG altogether.  We work around
- * this by adding a further 16 bytes.
- */
-#define EFX_MAX_FRAME_LEN(mtu) \
-	((((mtu) + ETH_HLEN + VLAN_HLEN + 4/* FCS */ + 7) & ~7) + 16)
-
-
-#endif /* EFX_NET_DRIVER_H */