295 lines
8.6 KiB
C
295 lines
8.6 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause */
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/* Copyright (c) 2020, Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*$FreeBSD$*/
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/**
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* @file ice_iflib.h
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* @brief main header for the iflib driver implementation
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*
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* Contains the definitions for various structures used by the iflib driver
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* implementation, including the Tx and Rx queue structures and the ice_softc
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* structure.
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*/
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#ifndef _ICE_IFLIB_H_
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#define _ICE_IFLIB_H_
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/* include kernel options first */
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#include "ice_opts.h"
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_media.h>
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#include <net/ethernet.h>
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#include <net/iflib.h>
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#include "ifdi_if.h"
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#include "ice_lib.h"
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#include "ice_osdep.h"
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#include "ice_resmgr.h"
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#include "ice_type.h"
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#include "ice_features.h"
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/**
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* ASSERT_CTX_LOCKED - Assert that the iflib context lock is held
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* @sc: ice softc pointer
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*
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* Macro to trigger an assertion if the iflib context lock is not
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* currently held.
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*/
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#define ASSERT_CTX_LOCKED(sc) sx_assert((sc)->iflib_ctx_lock, SA_XLOCKED)
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/**
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* IFLIB_CTX_LOCK - lock the iflib context lock
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* @sc: ice softc pointer
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*
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* Macro used to unlock the iflib context lock.
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*/
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#define IFLIB_CTX_LOCK(sc) sx_xlock((sc)->iflib_ctx_lock)
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/**
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* IFLIB_CTX_UNLOCK - unlock the iflib context lock
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* @sc: ice softc pointer
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*
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* Macro used to unlock the iflib context lock.
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*/
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#define IFLIB_CTX_UNLOCK(sc) sx_xunlock((sc)->iflib_ctx_lock)
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/**
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* ASSERT_CFG_LOCKED - Assert that a configuration lock is held
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* @sc: ice softc pointer
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*
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* Macro used by ice_lib.c to verify that certain functions are called while
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* holding a configuration lock. For the iflib implementation, this will be
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* the iflib context lock.
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*/
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#define ASSERT_CFG_LOCKED(sc) ASSERT_CTX_LOCKED(sc)
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/**
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* ICE_IFLIB_MAX_DESC_COUNT - Maximum ring size for iflib
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*
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* The iflib stack currently requires that the ring size, or number of
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* descriptors, be a power of 2. The ice hardware is limited to a maximum of
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* 8160 descriptors, which is not quite 2^13. Limit the maximum ring size for
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* iflib to just 2^12 (4096).
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*/
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#define ICE_IFLIB_MAX_DESC_COUNT 4096
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/**
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* @struct ice_irq_vector
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* @brief Driver irq vector structure
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*
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* ice_lib.c requires the following parameters
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* @me: the vector number
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*
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* Other parameters may be iflib driver specific
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*
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* The iflib driver uses a single hardware interrupt per Rx queue, and uses
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* software interrupts for the Tx queues.
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*/
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struct ice_irq_vector {
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u32 me;
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struct if_irq irq;
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};
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/**
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* @struct ice_tx_queue
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* @brief Driver Tx queue structure
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*
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* ice_lib.c requires the following parameters:
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* @vsi: backpointer the VSI structure
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* @me: this queue's index into the queue array
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* @irqv: always NULL for iflib
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* @desc_count: the number of descriptors
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* @tx_paddr: the physical address for this queue
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* @q_teid: the Tx queue TEID returned from firmware
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* @stats: queue statistics
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*
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* Other parameters may be iflib driver specific
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*/
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struct ice_tx_queue {
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struct ice_vsi *vsi;
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struct ice_tx_desc *tx_base;
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bus_addr_t tx_paddr;
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struct tx_stats stats;
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u64 tso;
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u16 desc_count;
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u32 tail;
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struct ice_irq_vector *irqv;
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u32 q_teid;
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u32 me;
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/* descriptor writeback status */
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qidx_t *tx_rsq;
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qidx_t tx_rs_cidx;
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qidx_t tx_rs_pidx;
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qidx_t tx_cidx_processed;
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};
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/**
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* @struct ice_rx_queue
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* @brief Driver Rx queue structure
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*
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* ice_lib.c requires the following parameters:
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* @vsi: backpointer the VSI structure
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* @me: this queue's index into the queue array
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* @irqv: pointer to vector structure associated with this queue
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* @desc_count: the number of descriptors
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* @rx_paddr: the physical address for this queue
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* @tail: the tail register address for this queue
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* @stats: queue statistics
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*
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* Other parameters may be iflib driver specific
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*/
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struct ice_rx_queue {
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struct ice_vsi *vsi;
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union ice_32b_rx_flex_desc *rx_base;
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bus_addr_t rx_paddr;
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struct rx_stats stats;
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u16 desc_count;
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u32 tail;
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struct ice_irq_vector *irqv;
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u32 me;
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struct if_irq que_irq;
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};
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/**
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* @struct ice_softc
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* @brief main structure representing one device
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*
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* ice_lib.c requires the following parameters
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* @all_vsi: the array of all allocated VSIs
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* @debug_sysctls: sysctl node for debug sysctls
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* @dev: device_t pointer
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* @feat_en: bitmap of enabled driver features
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* @hw: embedded ice_hw structure
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* @ifp: pointer to the ifnet structure
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* @link_up: boolean indicating if link is up
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* @num_available_vsi: size of the VSI array
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* @pf_vsi: embedded VSI structure for the main PF VSI
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* @rx_qmgr: queue manager for Rx queues
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* @soft_stats: software statistics for this device
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* @state: driver state flags
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* @stats: hardware statistics for this device
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* @tx_qmgr: queue manager for Tx queues
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* @vsi_sysctls: sysctl node for all VSI sysctls
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* @enable_tx_fc_filter: boolean indicating if the Tx FC filter is enabled
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* @enable_tx_lldp_filter: boolean indicating if the Tx LLDP filter is enabled
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* @rebuild_ticks: indicates when a post-reset rebuild started
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* @imgr: resource manager for interrupt allocations
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* @pf_imap: interrupt mapping for PF LAN interrupts
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* @lan_vectors: # of vectors used by LAN driver (length of pf_imap)
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* @ldo_tlv: LAN Default Override settings from NVM
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*
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* ice_iov.c requires the following parameters (when PCI_IOV is defined):
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* @vfs: array of VF context structures
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* @num_vfs: number of VFs to use for SR-IOV
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*
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* The main representation for a single OS device, used to represent a single
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* physical function.
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*/
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struct ice_softc {
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struct ice_hw hw;
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struct ice_vsi pf_vsi; /* Main PF VSI */
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char admin_mtx_name[16]; /* name of the admin mutex */
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struct mtx admin_mtx; /* mutex to protect the admin timer */
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struct callout admin_timer; /* timer to trigger admin task */
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struct ice_vsi **all_vsi; /* Array of VSI pointers */
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u16 num_available_vsi; /* Size of VSI array */
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struct sysctl_oid *vsi_sysctls; /* Sysctl node for VSI sysctls */
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struct sysctl_oid *debug_sysctls; /* Sysctl node for debug sysctls */
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device_t dev;
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if_ctx_t ctx;
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if_shared_ctx_t sctx;
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if_softc_ctx_t scctx;
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struct ifmedia *media;
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struct ifnet *ifp;
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/* device statistics */
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struct ice_pf_hw_stats stats;
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struct ice_pf_sw_stats soft_stats;
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/* Tx/Rx queue managers */
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struct ice_resmgr tx_qmgr;
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struct ice_resmgr rx_qmgr;
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/* Interrupt allocation manager */
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struct ice_resmgr imgr;
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u16 *pf_imap;
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int lan_vectors;
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/* iflib Tx/Rx queue count sysctl values */
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int ifc_sysctl_ntxqs;
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int ifc_sysctl_nrxqs;
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/* IRQ Vector data */
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struct resource *msix_table;
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int num_irq_vectors;
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struct ice_irq_vector *irqvs;
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/* BAR info */
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struct ice_bar_info bar0;
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/* link status */
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bool link_up;
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/* Ethertype filters enabled */
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bool enable_tx_fc_filter;
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bool enable_tx_lldp_filter;
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int rebuild_ticks;
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/* driver state flags, only access using atomic functions */
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u32 state;
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/* NVM link override settings */
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struct ice_link_default_override_tlv ldo_tlv;
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struct sx *iflib_ctx_lock;
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/* Tri-state feature flags (capable/enabled) */
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ice_declare_bitmap(feat_cap, ICE_FEATURE_COUNT);
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ice_declare_bitmap(feat_en, ICE_FEATURE_COUNT);
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};
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#endif /* _ICE_IFLIB_H_ */
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