forked from Minki/linux
5b6262d0cc
The 'page size' for PCIe DMA, i.e. the alignment of boundaries at which DMA must be broken, is 4KB. Name this value as EFX_PAGE_SIZE and use it in efx_max_tx_len(). Redefine EFX_BUF_SIZE as EFX_PAGE_SIZE since its value is also a result of that requirement, and use it in efx_init_special_buffer(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
292 lines
9.2 KiB
C
292 lines
9.2 KiB
C
/****************************************************************************
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* Driver for Solarflare Solarstorm network controllers and boards
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* Copyright 2005-2006 Fen Systems Ltd.
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* Copyright 2006-2011 Solarflare Communications Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation, incorporated herein by reference.
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*/
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#ifndef EFX_NIC_H
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#define EFX_NIC_H
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#include <linux/i2c-algo-bit.h>
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#include "net_driver.h"
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#include "efx.h"
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#include "mcdi.h"
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#include "spi.h"
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/*
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* Falcon hardware control
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*/
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enum {
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EFX_REV_FALCON_A0 = 0,
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EFX_REV_FALCON_A1 = 1,
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EFX_REV_FALCON_B0 = 2,
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EFX_REV_SIENA_A0 = 3,
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};
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static inline int efx_nic_rev(struct efx_nic *efx)
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{
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return efx->type->revision;
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}
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extern u32 efx_nic_fpga_ver(struct efx_nic *efx);
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static inline bool efx_nic_has_mc(struct efx_nic *efx)
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{
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return efx_nic_rev(efx) >= EFX_REV_SIENA_A0;
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}
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/* NIC has two interlinked PCI functions for the same port. */
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static inline bool efx_nic_is_dual_func(struct efx_nic *efx)
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{
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return efx_nic_rev(efx) < EFX_REV_FALCON_B0;
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}
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enum {
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PHY_TYPE_NONE = 0,
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PHY_TYPE_TXC43128 = 1,
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PHY_TYPE_88E1111 = 2,
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PHY_TYPE_SFX7101 = 3,
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PHY_TYPE_QT2022C2 = 4,
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PHY_TYPE_PM8358 = 6,
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PHY_TYPE_SFT9001A = 8,
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PHY_TYPE_QT2025C = 9,
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PHY_TYPE_SFT9001B = 10,
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};
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#define FALCON_XMAC_LOOPBACKS \
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((1 << LOOPBACK_XGMII) | \
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(1 << LOOPBACK_XGXS) | \
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(1 << LOOPBACK_XAUI))
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#define FALCON_GMAC_LOOPBACKS \
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(1 << LOOPBACK_GMAC)
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/* Alignment of PCIe DMA boundaries (4KB) */
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#define EFX_PAGE_SIZE 4096
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/* Size and alignment of buffer table entries (same) */
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#define EFX_BUF_SIZE EFX_PAGE_SIZE
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/**
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* struct falcon_board_type - board operations and type information
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* @id: Board type id, as found in NVRAM
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* @ref_model: Model number of Solarflare reference design
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* @gen_type: Generic board type description
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* @init: Allocate resources and initialise peripheral hardware
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* @init_phy: Do board-specific PHY initialisation
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* @fini: Shut down hardware and free resources
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* @set_id_led: Set state of identifying LED or revert to automatic function
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* @monitor: Board-specific health check function
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*/
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struct falcon_board_type {
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u8 id;
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const char *ref_model;
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const char *gen_type;
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int (*init) (struct efx_nic *nic);
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void (*init_phy) (struct efx_nic *efx);
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void (*fini) (struct efx_nic *nic);
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void (*set_id_led) (struct efx_nic *efx, enum efx_led_mode mode);
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int (*monitor) (struct efx_nic *nic);
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};
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/**
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* struct falcon_board - board information
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* @type: Type of board
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* @major: Major rev. ('A', 'B' ...)
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* @minor: Minor rev. (0, 1, ...)
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* @i2c_adap: I2C adapter for on-board peripherals
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* @i2c_data: Data for bit-banging algorithm
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* @hwmon_client: I2C client for hardware monitor
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* @ioexp_client: I2C client for power/port control
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*/
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struct falcon_board {
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const struct falcon_board_type *type;
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int major;
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int minor;
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struct i2c_adapter i2c_adap;
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struct i2c_algo_bit_data i2c_data;
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struct i2c_client *hwmon_client, *ioexp_client;
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};
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/**
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* struct falcon_nic_data - Falcon NIC state
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* @pci_dev2: Secondary function of Falcon A
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* @board: Board state and functions
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* @stats_disable_count: Nest count for disabling statistics fetches
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* @stats_pending: Is there a pending DMA of MAC statistics.
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* @stats_timer: A timer for regularly fetching MAC statistics.
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* @stats_dma_done: Pointer to the flag which indicates DMA completion.
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* @spi_flash: SPI flash device
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* @spi_eeprom: SPI EEPROM device
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* @spi_lock: SPI bus lock
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* @mdio_lock: MDIO bus lock
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* @xmac_poll_required: XMAC link state needs polling
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*/
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struct falcon_nic_data {
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struct pci_dev *pci_dev2;
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struct falcon_board board;
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unsigned int stats_disable_count;
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bool stats_pending;
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struct timer_list stats_timer;
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u32 *stats_dma_done;
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struct efx_spi_device spi_flash;
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struct efx_spi_device spi_eeprom;
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struct mutex spi_lock;
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struct mutex mdio_lock;
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bool xmac_poll_required;
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};
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static inline struct falcon_board *falcon_board(struct efx_nic *efx)
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{
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struct falcon_nic_data *data = efx->nic_data;
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return &data->board;
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}
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/**
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* struct siena_nic_data - Siena NIC state
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* @mcdi: Management-Controller-to-Driver Interface
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* @wol_filter_id: Wake-on-LAN packet filter id
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* @hwmon: Hardware monitor state
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*/
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struct siena_nic_data {
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struct efx_mcdi_iface mcdi;
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int wol_filter_id;
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#ifdef CONFIG_SFC_MCDI_MON
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struct efx_mcdi_mon hwmon;
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#endif
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};
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#ifdef CONFIG_SFC_MCDI_MON
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static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx)
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{
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struct siena_nic_data *nic_data;
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EFX_BUG_ON_PARANOID(efx_nic_rev(efx) < EFX_REV_SIENA_A0);
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nic_data = efx->nic_data;
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return &nic_data->hwmon;
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}
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#endif
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extern const struct efx_nic_type falcon_a1_nic_type;
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extern const struct efx_nic_type falcon_b0_nic_type;
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extern const struct efx_nic_type siena_a0_nic_type;
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/**************************************************************************
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*
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* Externs
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*
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**************************************************************************
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*/
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extern int falcon_probe_board(struct efx_nic *efx, u16 revision_info);
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/* TX data path */
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extern int efx_nic_probe_tx(struct efx_tx_queue *tx_queue);
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extern void efx_nic_init_tx(struct efx_tx_queue *tx_queue);
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extern void efx_nic_fini_tx(struct efx_tx_queue *tx_queue);
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extern void efx_nic_remove_tx(struct efx_tx_queue *tx_queue);
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extern void efx_nic_push_buffers(struct efx_tx_queue *tx_queue);
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/* RX data path */
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extern int efx_nic_probe_rx(struct efx_rx_queue *rx_queue);
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extern void efx_nic_init_rx(struct efx_rx_queue *rx_queue);
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extern void efx_nic_fini_rx(struct efx_rx_queue *rx_queue);
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extern void efx_nic_remove_rx(struct efx_rx_queue *rx_queue);
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extern void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue);
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/* Event data path */
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extern int efx_nic_probe_eventq(struct efx_channel *channel);
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extern void efx_nic_init_eventq(struct efx_channel *channel);
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extern void efx_nic_fini_eventq(struct efx_channel *channel);
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extern void efx_nic_remove_eventq(struct efx_channel *channel);
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extern int efx_nic_process_eventq(struct efx_channel *channel, int rx_quota);
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extern void efx_nic_eventq_read_ack(struct efx_channel *channel);
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extern bool efx_nic_event_present(struct efx_channel *channel);
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/* MAC/PHY */
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extern void falcon_drain_tx_fifo(struct efx_nic *efx);
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extern void falcon_reconfigure_mac_wrapper(struct efx_nic *efx);
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extern bool falcon_xmac_check_fault(struct efx_nic *efx);
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extern int falcon_reconfigure_xmac(struct efx_nic *efx);
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extern void falcon_update_stats_xmac(struct efx_nic *efx);
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/* Interrupts and test events */
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extern int efx_nic_init_interrupt(struct efx_nic *efx);
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extern void efx_nic_enable_interrupts(struct efx_nic *efx);
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extern void efx_nic_generate_test_event(struct efx_channel *channel);
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extern void efx_nic_generate_fill_event(struct efx_channel *channel);
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extern void efx_nic_generate_interrupt(struct efx_nic *efx);
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extern void efx_nic_disable_interrupts(struct efx_nic *efx);
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extern void efx_nic_fini_interrupt(struct efx_nic *efx);
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extern irqreturn_t efx_nic_fatal_interrupt(struct efx_nic *efx);
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extern irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id);
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extern void falcon_irq_ack_a1(struct efx_nic *efx);
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/* Global Resources */
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extern int efx_nic_flush_queues(struct efx_nic *efx);
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extern void falcon_start_nic_stats(struct efx_nic *efx);
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extern void falcon_stop_nic_stats(struct efx_nic *efx);
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extern void falcon_setup_xaui(struct efx_nic *efx);
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extern int falcon_reset_xaui(struct efx_nic *efx);
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extern void efx_nic_init_common(struct efx_nic *efx);
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extern void efx_nic_push_rx_indir_table(struct efx_nic *efx);
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int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
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unsigned int len);
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void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
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/* Tests */
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struct efx_nic_register_test {
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unsigned address;
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efx_oword_t mask;
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};
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extern int efx_nic_test_registers(struct efx_nic *efx,
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const struct efx_nic_register_test *regs,
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size_t n_regs);
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extern size_t efx_nic_get_regs_len(struct efx_nic *efx);
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extern void efx_nic_get_regs(struct efx_nic *efx, void *buf);
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/**************************************************************************
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*
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* Falcon MAC stats
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*
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**************************************************************************
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*/
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#define FALCON_STAT_OFFSET(falcon_stat) EFX_VAL(falcon_stat, offset)
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#define FALCON_STAT_WIDTH(falcon_stat) EFX_VAL(falcon_stat, WIDTH)
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/* Retrieve statistic from statistics block */
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#define FALCON_STAT(efx, falcon_stat, efx_stat) do { \
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if (FALCON_STAT_WIDTH(falcon_stat) == 16) \
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(efx)->mac_stats.efx_stat += le16_to_cpu( \
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*((__force __le16 *) \
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(efx->stats_buffer.addr + \
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FALCON_STAT_OFFSET(falcon_stat)))); \
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else if (FALCON_STAT_WIDTH(falcon_stat) == 32) \
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(efx)->mac_stats.efx_stat += le32_to_cpu( \
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*((__force __le32 *) \
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(efx->stats_buffer.addr + \
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FALCON_STAT_OFFSET(falcon_stat)))); \
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else \
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(efx)->mac_stats.efx_stat += le64_to_cpu( \
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*((__force __le64 *) \
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(efx->stats_buffer.addr + \
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FALCON_STAT_OFFSET(falcon_stat)))); \
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} while (0)
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#define FALCON_MAC_STATS_SIZE 0x100
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#define MAC_DATA_LBN 0
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#define MAC_DATA_WIDTH 32
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extern void efx_nic_generate_event(struct efx_channel *channel,
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efx_qword_t *event);
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extern void falcon_poll_xmac(struct efx_nic *efx);
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#endif /* EFX_NIC_H */
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