diff options
Diffstat (limited to 'drivers/net/sfc/net_driver.h')
| -rw-r--r-- | drivers/net/sfc/net_driver.h | 917 |
1 files changed, 0 insertions, 917 deletions
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h deleted file mode 100644 index 219c74a772c..00000000000 --- a/drivers/net/sfc/net_driver.h +++ /dev/null @@ -1,917 +0,0 @@ -/**************************************************************************** - * Driver for Solarflare Solarstorm network controllers and boards - * Copyright 2005-2006 Fen Systems Ltd. - * Copyright 2005-2008 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 - -#include <linux/version.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/if_vlan.h> -#include <linux/timer.h> -#include <linux/mii.h> -#include <linux/list.h> -#include <linux/pci.h> -#include <linux/device.h> -#include <linux/highmem.h> -#include <linux/workqueue.h> -#include <linux/inet_lro.h> -#include <linux/i2c.h> - -#include "enum.h" -#include "bitfield.h" - -#define EFX_MAX_LRO_DESCRIPTORS 8 -#define EFX_MAX_LRO_AGGR MAX_SKB_FRAGS - -/************************************************************************** - * - * Build definitions - * - **************************************************************************/ -#ifndef EFX_DRIVER_NAME -#define EFX_DRIVER_NAME "sfc" -#endif -#define EFX_DRIVER_VERSION "2.2" - -#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 - -/* Un-rate-limited logging */ -#define EFX_ERR(efx, fmt, args...) \ -dev_err(&((efx)->pci_dev->dev), "ERR: %s " fmt, efx_dev_name(efx), ##args) - -#define EFX_INFO(efx, fmt, args...) \ -dev_info(&((efx)->pci_dev->dev), "INFO: %s " fmt, efx_dev_name(efx), ##args) - -#ifdef EFX_ENABLE_DEBUG -#define EFX_LOG(efx, fmt, args...) \ -dev_info(&((efx)->pci_dev->dev), "DBG: %s " fmt, efx_dev_name(efx), ##args) -#else -#define EFX_LOG(efx, fmt, args...) \ -dev_dbg(&((efx)->pci_dev->dev), "DBG: %s " fmt, efx_dev_name(efx), ##args) -#endif - -#define EFX_TRACE(efx, fmt, args...) do {} while (0) - -#define EFX_REGDUMP(efx, fmt, args...) do {} while (0) - -/* Rate-limited logging */ -#define EFX_ERR_RL(efx, fmt, args...) \ -do {if (net_ratelimit()) EFX_ERR(efx, fmt, ##args); } while (0) - -#define EFX_INFO_RL(efx, fmt, args...) \ -do {if (net_ratelimit()) EFX_INFO(efx, fmt, ##args); } while (0) - -#define EFX_LOG_RL(efx, fmt, args...) \ -do {if (net_ratelimit()) EFX_LOG(efx, fmt, ##args); } while (0) - -/************************************************************************** - * - * Efx data structures - * - **************************************************************************/ - -#define EFX_MAX_CHANNELS 32 -#define EFX_MAX_TX_QUEUES 1 -#define EFX_MAX_RX_QUEUES 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. - * - * Note that for Falcon, TX and RX descriptor queues live in host memory. - * Allocation and freeing procedures must take this into account. - */ -struct efx_special_buffer { - void *addr; - dma_addr_t dma_addr; - unsigned int len; - int index; - int entries; -}; - -/** - * 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_addr: DMA address to unmap - * @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; - unsigned char continuation; - unsigned char unmap_single; - dma_addr_t unmap_addr; - 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 - * @used: Queue is used by net driver - * @channel: The associated channel - * @buffer: The software buffer ring - * @txd: The hardware descriptor ring - * @read_count: Current read pointer. - * This is the number of buffers that have been removed from both rings. - * @stopped: Stopped flag. - * Set if this TX queue is currently stopping its port. - * @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 - */ -struct efx_tx_queue { - /* Members which don't change on the fast path */ - struct efx_nic *efx ____cacheline_aligned_in_smp; - int queue; - int used; - struct efx_channel *channel; - struct efx_nic *nic; - struct efx_tx_buffer *buffer; - struct efx_special_buffer txd; - - /* Members used mainly on the completion path */ - unsigned int read_count ____cacheline_aligned_in_smp; - int stopped; - - /* 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; -}; - -/** - * 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. - * @data: Pointer to ethernet header - * @len: Buffer length, in bytes. - * @unmap_addr: DMA address to unmap - */ -struct efx_rx_buffer { - dma_addr_t dma_addr; - struct sk_buff *skb; - struct page *page; - char *data; - unsigned int len; - dma_addr_t unmap_addr; -}; - -/** - * struct efx_rx_queue - An Efx RX queue - * @efx: The associated Efx NIC - * @queue: DMA queue number - * @used: Queue is used by net driver - * @channel: The associated channel - * @buffer: The software buffer ring - * @rxd: The hardware descriptor ring - * @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. - * @add_lock: Receive queue descriptor add spin lock. - * This lock must be held in order to add buffers to the RX - * descriptor ring (rxd and buffer) and to update added_count (but - * not removed_count). - * @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. - * @min_overfill: RX descriptor minimum overflow fill level. - * This records the minimum fill level at which RX queue - * overflow was observed. It should never be set. - * @alloc_page_count: RX allocation strategy counter. - * @alloc_skb_count: RX allocation strategy counter. - * @work: Descriptor push work thread - * @buf_page: Page for next RX buffer. - * We can use a single page for multiple RX buffers. This tracks - * the remaining space in the allocation. - * @buf_dma_addr: Page's DMA address. - * @buf_data: Page's host address. - */ -struct efx_rx_queue { - struct efx_nic *efx; - int queue; - int used; - struct efx_channel *channel; - struct efx_rx_buffer *buffer; - struct efx_special_buffer rxd; - - int added_count; - int notified_count; - int removed_count; - spinlock_t add_lock; - 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 delayed_work work; - unsigned int slow_fill_count; - - struct page *buf_page; - dma_addr_t buf_dma_addr; - char *buf_data; -}; - -/** - * 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 - * - * Falcon 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; -}; - - -/* Flags for channel->used_flags */ -#define EFX_USED_BY_RX 1 -#define EFX_USED_BY_TX 2 -#define EFX_USED_BY_RX_TX (EFX_USED_BY_RX | EFX_USED_BY_TX) - -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 - * @evqnum: Event queue number - * @channel: Channel instance number - * @used_flags: Channel is used by net driver - * @enabled: Channel enabled indicator - * @irq: IRQ number (MSI and MSI-X only) - * @has_interrupt: Channel has an interrupt - * @irq_moderation: IRQ moderation value (in us) - * @napi_dev: Net device used with NAPI - * @napi_str: NAPI control structure - * @reset_work: Scheduled reset work thread - * @work_pending: Is work pending via NAPI? - * @eventq: Event queue buffer - * @eventq_read_ptr: Event queue read pointer - * @last_eventq_read_ptr: Last event queue read pointer value. - * @eventq_magic: Event queue magic value for driver-generated test events - * @lro_mgr: LRO state - * @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 - * @rx_alloc_pop_pages: RX allocation method currently in use for popping - * descriptors - * @n_rx_tobe_disc: Count of RX_TOBE_DISC errors - * @n_rx_ip_frag_err: Count of RX IP fragment 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_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 - */ -struct efx_channel { - struct efx_nic *efx; - int evqnum; - int channel; - int used_flags; - int enabled; - int irq; - unsigned int has_interrupt; - unsigned int irq_moderation; - struct net_device *napi_dev; - struct napi_struct napi_str; - struct work_struct reset_work; - int work_pending; - struct efx_special_buffer eventq; - unsigned int eventq_read_ptr; - unsigned int last_eventq_read_ptr; - unsigned int eventq_magic; - - struct net_lro_mgr lro_mgr; - int rx_alloc_level; - int rx_alloc_push_pages; - int rx_alloc_pop_pages; - - unsigned n_rx_tobe_disc; - unsigned n_rx_ip_frag_err; - unsigned n_rx_ip_hdr_chksum_err; - unsigned n_rx_tcp_udp_chksum_err; - 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; - int rx_pkt_csummed; - -}; - -/** - * struct efx_blinker - S/W LED blinking context - * @led_num: LED ID (board-specific meaning) - * @state: Current state - on or off - * @resubmit: Timer resubmission flag - * @timer: Control timer for blinking - */ -struct efx_blinker { - int led_num; - int state; - int resubmit; - struct timer_list timer; -}; - - -/** - * struct efx_board - board information - * @type: Board model type - * @major: Major rev. ('A', 'B' ...) - * @minor: Minor rev. (0, 1, ...) - * @init: Initialisation function - * @init_leds: Sets up board LEDs - * @set_fault_led: Turns the fault LED on or off - * @blink: Starts/stops blinking - * @fini: Cleanup function - * @blinker: used to blink LEDs in software - * @hwmon_client: I2C client for hardware monitor - * @ioexp_client: I2C client for power/port control - */ -struct efx_board { - int type; - int major; - int minor; - int (*init) (struct efx_nic *nic); - /* As the LEDs are typically attached to the PHY, LEDs - * have a separate init callback that happens later than - * board init. */ - int (*init_leds)(struct efx_nic *efx); - void (*set_fault_led) (struct efx_nic *efx, int state); - void (*blink) (struct efx_nic *efx, int start); - void (*fini) (struct efx_nic *nic); - struct efx_blinker blinker; - struct i2c_client *hwmon_client, *ioexp_client; -}; - -#define STRING_TABLE_LOOKUP(val, member) \ - member ## _names[val] - -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 phy_type { - PHY_TYPE_NONE = 0, - PHY_TYPE_CX4_RTMR = 1, - PHY_TYPE_1G_ALASKA = 2, - PHY_TYPE_10XPRESS = 3, - PHY_TYPE_XFP = 4, - PHY_TYPE_PM8358 = 6, - PHY_TYPE_MAX /* Insert any new items before this */ -}; - -#define PHY_ADDR_INVALID 0xff - -enum nic_state { - STATE_INIT = 0, - STATE_RUNNING = 1, - STATE_FINI = 2, - STATE_RESETTING = 3, /* rtnl_lock always held */ - STATE_DISABLED = 4, - 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]. - */ -#if defined(__i386__) || defined(__x86_64__) -#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 */ -enum efx_fc_type { - EFX_FC_RX = 1, - EFX_FC_TX = 2, - EFX_FC_AUTO = 4, -}; - -/** - * struct efx_phy_operations - Efx PHY operations table - * @init: Initialise PHY - * @fini: Shut down PHY - * @reconfigure: Reconfigure PHY (e.g. for new link parameters) - * @clear_interrupt: Clear down interrupt - * @blink: Blink LEDs - * @check_hw: Check hardware - * @reset_xaui: Reset XAUI side of PHY for (software sequenced reset) - * @mmds: MMD presence mask - * @loopbacks: Supported loopback modes mask - */ -struct efx_phy_operations { - int (*init) (struct efx_nic *efx); - void (*fini) (struct efx_nic *efx); - void (*reconfigure) (struct efx_nic *efx); - void (*clear_interrupt) (struct efx_nic *efx); - int (*check_hw) (struct efx_nic *efx); - void (*reset_xaui) (struct efx_nic *efx); - int mmds; - unsigned loopbacks; -}; - -/* - * 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_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 - * @workqueue: Workqueue for port reconfigures and the HW monitor. - * Work items do not hold and must not acquire RTNL. - * @reset_workqueue: Workqueue for resets. Work item will acquire RTNL. - * @reset_work: Scheduled reset workitem - * @monitor_work: Hardware monitor workitem - * @membase_phys: Memory BAR value as physical address - * @membase: Memory BAR value - * @biu_lock: BIU (bus interface unit) lock - * @interrupt_mode: Interrupt mode - * @i2c_adap: I2C adapter - * @board_info: Board-level information - * @state: Device state flag. Serialised by the rtnl_lock. - * @reset_pending: Pending reset method (normally RESET_TYPE_NONE) - * @tx_queue: TX DMA queues - * @rx_queue: RX DMA queues - * @channel: Channels - * @rss_queues: Number of RSS queues - * @rx_buffer_len: RX buffer length - * @rx_buffer_order: Order (log2) of number of pages for each RX buffer - * @irq_status: Interrupt status buffer - * @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 falcon_test_interrupt() - * to verify that an interrupt has occurred. - * @n_rx_nodesc_drop_cnt: RX no descriptor drop count - * @nic_data: Hardware dependant state - * @mac_lock: MAC access lock. Protects @port_enabled, efx_monitor() and - * efx_reconfigure_port() - * @port_enabled: Port enabled indicator. - * Serialises efx_stop_all(), efx_start_all() and efx_monitor() and - * efx_reconfigure_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 - * @rx_checksum_enabled: RX checksumming enabled - * @netif_stop_count: Port stop count - * @netif_stop_lock: Port stop lock - * @mac_stats: MAC statistics. These include all statistics the MACs - * can provide. Generic code converts these into a standard - * &struct net_device_stats. - * @stats_buffer: DMA buffer for statistics - * @stats_lock: Statistics update lock - * @mac_address: Permanent MAC address - * @phy_type: PHY type - * @phy_lock: PHY access lock - * @phy_op: PHY interface - * @phy_data: PHY private data (including PHY-specific stats) - * @mii: PHY interface - * @tx_disabled: PHY transmitter turned off - * @link_up: Link status - * @link_options: Link options (MII/GMII format) - * @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 - * @flow_control: Flow control flags - separate RX/TX so can't use link_options - * @reconfigure_work: work item for dealing with PHY events - * @loopback_mode: Loopback status - * @loopback_modes: Supported loopback mode bitmask - * @loopback_selftest: Offline self-test private state - * - * The @priv field of the corresponding &struct net_device points to - * this. - */ -struct efx_nic { - char name[IFNAMSIZ]; - struct pci_dev *pci_dev; - const struct efx_nic_type *type; - int legacy_irq; - struct workqueue_struct *workqueue; - struct workqueue_struct *reset_workqueue; - struct work_struct reset_work; - struct delayed_work monitor_work; - resource_size_t membase_phys; - void __iomem *membase; - spinlock_t biu_lock; - enum efx_int_mode interrupt_mode; - - struct i2c_adapter i2c_adap; - struct efx_board board_info; - - enum nic_state state; - enum reset_type reset_pending; - - struct efx_tx_queue tx_queue[EFX_MAX_TX_QUEUES]; - struct efx_rx_queue rx_queue[EFX_MAX_RX_QUEUES]; - struct efx_channel channel[EFX_MAX_CHANNELS]; - - int rss_queues; - unsigned int rx_buffer_len; - unsigned int rx_buffer_order; - - struct efx_buffer irq_status; - volatile signed int last_irq_cpu; - - unsigned n_rx_nodesc_drop_cnt; - - struct falcon_nic_data *nic_data; - - struct mutex mac_lock; - int port_enabled; - - int port_initialized; - struct net_device *net_dev; - int rx_checksum_enabled; - - atomic_t netif_stop_count; - spinlock_t netif_stop_lock; - - struct efx_mac_stats mac_stats; - struct efx_buffer stats_buffer; - spinlock_t stats_lock; - - unsigned char mac_address[ETH_ALEN]; - - enum phy_type phy_type; - spinlock_t phy_lock; - struct efx_phy_operations *phy_op; - void *phy_data; - struct mii_if_info mii; - unsigned tx_disabled; - - int link_up; - unsigned int link_options; - unsigned int n_link_state_changes; - - int promiscuous; - union efx_multicast_hash multicast_hash; - enum efx_fc_type flow_control; - struct work_struct reconfigure_work; - - atomic_t rx_reset; - enum efx_loopback_mode loopback_mode; - unsigned int loopback_modes; - - void *loopback_selftest; -}; - -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 : ""; -} - -/** - * struct efx_nic_type - Efx device type definition - * @mem_bar: Memory BAR number - * @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 - * @txd_ring_mask: TX descriptor ring size - 1 (must be a power of two - 1) - * @rxd_ring_mask: RX descriptor ring size - 1 (must be a power of two - 1) - * @evq_size: Event queue size (must be a power of two) - * @max_dma_mask: Maximum possible DMA mask - * @tx_dma_mask: TX DMA mask - * @bug5391_mask: Address mask for bug 5391 workaround - * @rx_xoff_thresh: RX FIFO XOFF watermark (bytes) - * @rx_xon_thresh: RX FIFO XON watermark (bytes) - * @rx_buffer_padding: Padding added to each 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 - */ -struct efx_nic_type { - unsigned int mem_bar; - 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; - - unsigned int txd_ring_mask; - unsigned int rxd_ring_mask; - unsigned int evq_size; - u64 max_dma_mask; - unsigned int tx_dma_mask; - unsigned bug5391_mask; - - int rx_xoff_thresh; - int rx_xon_thresh; - unsigned int rx_buffer_padding; - unsigned int max_interrupt_mode; - unsigned int phys_addr_channels; -}; - -/************************************************************************** - * - * Prototypes and inline functions - * - *************************************************************************/ - -/* Iterate over all used channels */ -#define efx_for_each_channel(_channel, _efx) \ - for (_channel = &_efx->channel[0]; \ - _channel < &_efx->channel[EFX_MAX_CHANNELS]; \ - _channel++) \ - if (!_channel->used_flags) \ - continue; \ - else - -/* Iterate over all used channels with interrupts */ -#define efx_for_each_channel_with_interrupt(_channel, _efx) \ - for (_channel = &_efx->channel[0]; \ - _channel < &_efx->channel[EFX_MAX_CHANNELS]; \ - _channel++) \ - if (!(_channel->used_flags && _channel->has_interrupt)) \ - continue; \ - else - -/* Iterate over all used TX queues */ -#define efx_for_each_tx_queue(_tx_queue, _efx) \ - for (_tx_queue = &_efx->tx_queue[0]; \ - _tx_queue < &_efx->tx_queue[EFX_MAX_TX_QUEUES]; \ - _tx_queue++) \ - if (!_tx_queue->used) \ - continue; \ - else - -/* Iterate over all TX queues belonging to a channel */ -#define efx_for_each_channel_tx_queue(_tx_queue, _channel) \ - for (_tx_queue = &_channel->efx->tx_queue[0]; \ - _tx_queue < &_channel->efx->tx_queue[EFX_MAX_TX_QUEUES]; \ - _tx_queue++) \ - if ((!_tx_queue->used) || \ - (_tx_queue->channel != _channel)) \ - continue; \ - else - -/* Iterate over all used RX queues */ -#define efx_for_each_rx_queue(_rx_queue, _efx) \ - for (_rx_queue = &_efx->rx_queue[0]; \ - _rx_queue < &_efx->rx_queue[EFX_MAX_RX_QUEUES]; \ - _rx_queue++) \ - if (!_rx_queue->used) \ - continue; \ - else - -/* Iterate over all RX queues belonging to a channel */ -#define efx_for_each_channel_rx_queue(_rx_queue, _channel) \ - for (_rx_queue = &_channel->efx->rx_queue[0]; \ - _rx_queue < &_channel->efx->rx_queue[EFX_MAX_RX_QUEUES]; \ - _rx_queue++) \ - if ((!_rx_queue->used) || \ - (_rx_queue->channel != _channel)) \ - continue; \ - else - -/* 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(int nr, unsigned char *addr) -{ - addr[nr / 8] |= (1 << (nr % 8)); -} - -/* Clear bit in a little-endian bitfield */ -static inline void clear_bit_le(int 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 used in Falcon requires 8-byte alignment on the frame - * length, so we round up to the nearest 8. - */ -#define EFX_MAX_FRAME_LEN(mtu) \ - ((((mtu) + ETH_HLEN + VLAN_HLEN + 4/* FCS */) + 7) & ~7) - - -#endif /* EFX_NET_DRIVER_H */ |