fm10k_common.c | Explore in Territory

// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2018 Intel Corporation. */

#include "fm10k_common.h"

/**
 *  fm10k_get_bus_info_generic - Generic set PCI bus info
 *  @hw: pointer to hardware structure
 *
 *  Gets the PCI bus info (speed, width, type) then calls helper function to
 *  store this data within the fm10k_hw structure.
 **/
s32 fm10k_get_bus_info_generic(struct fm10k_hw *hw)
{ … }

static u16 fm10k_get_pcie_msix_count_generic(struct fm10k_hw *hw)
{ … }

/**
 *  fm10k_get_invariants_generic - Inits constant values
 *  @hw: pointer to the hardware structure
 *
 *  Initialize the common invariants for the device.
 **/
s32 fm10k_get_invariants_generic(struct fm10k_hw *hw)
{ … }

/**
 *  fm10k_start_hw_generic - Prepare hardware for Tx/Rx
 *  @hw: pointer to hardware structure
 *
 *  This function sets the Tx ready flag to indicate that the Tx path has
 *  been initialized.
 **/
s32 fm10k_start_hw_generic(struct fm10k_hw *hw)
{ … }

/**
 *  fm10k_disable_queues_generic - Stop Tx/Rx queues
 *  @hw: pointer to hardware structure
 *  @q_cnt: number of queues to be disabled
 *
 **/
s32 fm10k_disable_queues_generic(struct fm10k_hw *hw, u16 q_cnt)
{ … }

/**
 *  fm10k_stop_hw_generic - Stop Tx/Rx units
 *  @hw: pointer to hardware structure
 *
 **/
s32 fm10k_stop_hw_generic(struct fm10k_hw *hw)
{ … }

/**
 *  fm10k_read_hw_stats_32b - Reads value of 32-bit registers
 *  @hw: pointer to the hardware structure
 *  @addr: address of register containing a 32-bit value
 *  @stat: pointer to structure holding hw stat information
 *
 *  Function reads the content of the register and returns the delta
 *  between the base and the current value.
 *  **/
u32 fm10k_read_hw_stats_32b(struct fm10k_hw *hw, u32 addr,
			    struct fm10k_hw_stat *stat)
{ … }

/**
 *  fm10k_read_hw_stats_48b - Reads value of 48-bit registers
 *  @hw: pointer to the hardware structure
 *  @addr: address of register containing the lower 32-bit value
 *  @stat: pointer to structure holding hw stat information
 *
 *  Function reads the content of 2 registers, combined to represent a 48-bit
 *  statistical value. Extra processing is required to handle overflowing.
 *  Finally, a delta value is returned representing the difference between the
 *  values stored in registers and values stored in the statistic counters.
 *  **/
static u64 fm10k_read_hw_stats_48b(struct fm10k_hw *hw, u32 addr,
				   struct fm10k_hw_stat *stat)
{ … }

/**
 *  fm10k_update_hw_base_48b - Updates 48-bit statistic base value
 *  @stat: pointer to the hardware statistic structure
 *  @delta: value to be updated into the hardware statistic structure
 *
 *  Function receives a value and determines if an update is required based on
 *  a delta calculation. Only the base value will be updated.
 **/
static void fm10k_update_hw_base_48b(struct fm10k_hw_stat *stat, u64 delta)
{ … }

/**
 *  fm10k_update_hw_stats_tx_q - Updates TX queue statistics counters
 *  @hw: pointer to the hardware structure
 *  @q: pointer to the ring of hardware statistics queue
 *  @idx: index pointing to the start of the ring iteration
 *
 *  Function updates the TX queue statistics counters that are related to the
 *  hardware.
 **/
static void fm10k_update_hw_stats_tx_q(struct fm10k_hw *hw,
				       struct fm10k_hw_stats_q *q,
				       u32 idx)
{ … }

/**
 *  fm10k_update_hw_stats_rx_q - Updates RX queue statistics counters
 *  @hw: pointer to the hardware structure
 *  @q: pointer to the ring of hardware statistics queue
 *  @idx: index pointing to the start of the ring iteration
 *
 *  Function updates the RX queue statistics counters that are related to the
 *  hardware.
 **/
static void fm10k_update_hw_stats_rx_q(struct fm10k_hw *hw,
				       struct fm10k_hw_stats_q *q,
				       u32 idx)
{ … }

/**
 *  fm10k_update_hw_stats_q - Updates queue statistics counters
 *  @hw: pointer to the hardware structure
 *  @q: pointer to the ring of hardware statistics queue
 *  @idx: index pointing to the start of the ring iteration
 *  @count: number of queues to iterate over
 *
 *  Function updates the queue statistics counters that are related to the
 *  hardware.
 **/
void fm10k_update_hw_stats_q(struct fm10k_hw *hw, struct fm10k_hw_stats_q *q,
			     u32 idx, u32 count)
{ … }

/**
 *  fm10k_unbind_hw_stats_q - Unbind the queue counters from their queues
 *  @q: pointer to the ring of hardware statistics queue
 *  @idx: index pointing to the start of the ring iteration
 *  @count: number of queues to iterate over
 *
 *  Function invalidates the index values for the queues so any updates that
 *  may have happened are ignored and the base for the queue stats is reset.
 **/
void fm10k_unbind_hw_stats_q(struct fm10k_hw_stats_q *q, u32 idx, u32 count)
{ … }

/**
 *  fm10k_get_host_state_generic - Returns the state of the host
 *  @hw: pointer to hardware structure
 *  @host_ready: pointer to boolean value that will record host state
 *
 *  This function will check the health of the mailbox and Tx queue 0
 *  in order to determine if we should report that the link is up or not.
 **/
s32 fm10k_get_host_state_generic(struct fm10k_hw *hw, bool *host_ready)
{ … }
linux/drivers/net/ethernet/intel/fm10k/fm10k_common.c
