304 lines
7.6 KiB
C
304 lines
7.6 KiB
C
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/*-
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* Copyright (c) 2010-2011 Solarflare Communications, Inc.
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* All rights reserved.
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*
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* This software was developed in part by Philip Paeps under contract for
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* Solarflare Communications, Inc.
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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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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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SFXGE_H
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#define _SFXGE_H
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/condvar.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/sx.h>
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#include <vm/uma.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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/*
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* Backward-compatibility
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*/
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#ifndef CACHE_LINE_SIZE
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/* This should be right on most machines the driver will be used on, and
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* we needn't care too much about wasting a few KB per interface.
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*/
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#define CACHE_LINE_SIZE 128
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#endif
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#ifndef IFCAP_LINKSTATE
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#define IFCAP_LINKSTATE 0
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#endif
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#ifndef IFCAP_VLAN_HWTSO
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#define IFCAP_VLAN_HWTSO 0
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#endif
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#ifndef IFM_10G_T
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#define IFM_10G_T IFM_UNKNOWN
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#endif
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#ifndef IFM_10G_KX4
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#define IFM_10G_KX4 IFM_10G_CX4
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#endif
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#if __FreeBSD_version >= 800054
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/* Networking core is multiqueue aware. We can manage our own TX
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* queues and use m_pkthdr.flowid.
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*/
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#define SFXGE_HAVE_MQ
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#endif
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#if (__FreeBSD_version >= 800501 && __FreeBSD_version < 900000) || \
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__FreeBSD_version >= 900003
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#define SFXGE_HAVE_DESCRIBE_INTR
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#endif
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#ifdef IFM_ETH_RXPAUSE
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#define SFXGE_HAVE_PAUSE_MEDIAOPTS
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#endif
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#ifndef CTLTYPE_U64
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#define CTLTYPE_U64 CTLTYPE_QUAD
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#endif
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#include "sfxge_rx.h"
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#include "sfxge_tx.h"
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#define SFXGE_IP_ALIGN 2
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#define SFXGE_ETHERTYPE_LOOPBACK 0x9000 /* Xerox loopback */
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enum sfxge_evq_state {
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SFXGE_EVQ_UNINITIALIZED = 0,
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SFXGE_EVQ_INITIALIZED,
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SFXGE_EVQ_STARTING,
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SFXGE_EVQ_STARTED
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};
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#define SFXGE_EV_BATCH 16384
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struct sfxge_evq {
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struct sfxge_softc *sc __aligned(CACHE_LINE_SIZE);
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struct mtx lock __aligned(CACHE_LINE_SIZE);
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enum sfxge_evq_state init_state;
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unsigned int index;
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efsys_mem_t mem;
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unsigned int buf_base_id;
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boolean_t exception;
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efx_evq_t *common;
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unsigned int read_ptr;
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unsigned int rx_done;
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unsigned int tx_done;
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/* Linked list of TX queues with completions to process */
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struct sfxge_txq *txq;
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struct sfxge_txq **txqs;
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};
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#define SFXGE_NEVS 4096
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#define SFXGE_NDESCS 1024
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#define SFXGE_MODERATION 30
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enum sfxge_intr_state {
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SFXGE_INTR_UNINITIALIZED = 0,
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SFXGE_INTR_INITIALIZED,
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SFXGE_INTR_TESTING,
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SFXGE_INTR_STARTED
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};
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struct sfxge_intr_hdl {
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int eih_rid;
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void *eih_tag;
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struct resource *eih_res;
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};
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struct sfxge_intr {
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enum sfxge_intr_state state;
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struct resource *msix_res;
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struct sfxge_intr_hdl *table;
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int n_alloc;
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int type;
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efsys_mem_t status;
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uint32_t zero_count;
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};
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enum sfxge_mcdi_state {
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SFXGE_MCDI_UNINITIALIZED = 0,
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SFXGE_MCDI_INITIALIZED,
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SFXGE_MCDI_BUSY,
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SFXGE_MCDI_COMPLETED
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};
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struct sfxge_mcdi {
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struct mtx lock;
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struct cv cv;
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enum sfxge_mcdi_state state;
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efx_mcdi_transport_t transport;
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};
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struct sfxge_hw_stats {
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clock_t update_time;
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efsys_mem_t dma_buf;
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void *decode_buf;
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};
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enum sfxge_port_state {
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SFXGE_PORT_UNINITIALIZED = 0,
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SFXGE_PORT_INITIALIZED,
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SFXGE_PORT_STARTED
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};
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struct sfxge_port {
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struct sfxge_softc *sc;
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struct mtx lock;
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enum sfxge_port_state init_state;
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#ifndef SFXGE_HAVE_PAUSE_MEDIAOPTS
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unsigned int wanted_fc;
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#endif
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struct sfxge_hw_stats phy_stats;
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struct sfxge_hw_stats mac_stats;
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efx_link_mode_t link_mode;
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};
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enum sfxge_softc_state {
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SFXGE_UNINITIALIZED = 0,
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SFXGE_INITIALIZED,
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SFXGE_REGISTERED,
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SFXGE_STARTED
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};
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struct sfxge_softc {
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device_t dev;
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struct sx softc_lock;
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enum sfxge_softc_state init_state;
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struct ifnet *ifnet;
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unsigned int if_flags;
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struct sysctl_oid *stats_node;
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struct task task_reset;
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efx_family_t family;
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caddr_t vpd_data;
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size_t vpd_size;
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efx_nic_t *enp;
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struct mtx enp_lock;
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bus_dma_tag_t parent_dma_tag;
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efsys_bar_t bar;
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struct sfxge_intr intr;
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struct sfxge_mcdi mcdi;
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struct sfxge_port port;
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uint32_t buffer_table_next;
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struct sfxge_evq *evq[SFXGE_RX_SCALE_MAX];
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unsigned int ev_moderation;
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clock_t ev_stats_update_time;
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uint64_t ev_stats[EV_NQSTATS];
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uma_zone_t rxq_cache;
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struct sfxge_rxq *rxq[SFXGE_RX_SCALE_MAX];
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unsigned int rx_indir_table[SFXGE_RX_SCALE_MAX];
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#ifdef SFXGE_HAVE_MQ
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struct sfxge_txq *txq[SFXGE_TXQ_NTYPES + SFXGE_RX_SCALE_MAX];
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#else
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struct sfxge_txq *txq[SFXGE_TXQ_NTYPES];
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#endif
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struct ifmedia media;
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size_t rx_prefix_size;
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size_t rx_buffer_size;
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uma_zone_t rx_buffer_zone;
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#ifndef SFXGE_HAVE_MQ
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struct mtx tx_lock __aligned(CACHE_LINE_SIZE);
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#endif
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};
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#define SFXGE_LINK_UP(sc) ((sc)->port.link_mode != EFX_LINK_DOWN)
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#define SFXGE_RUNNING(sc) ((sc)->ifnet->if_drv_flags & IFF_DRV_RUNNING)
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/*
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* From sfxge.c.
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*/
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extern void sfxge_schedule_reset(struct sfxge_softc *sc);
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extern void sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n,
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uint32_t *idp);
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/*
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* From sfxge_dma.c.
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*/
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extern int sfxge_dma_init(struct sfxge_softc *sc);
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extern void sfxge_dma_fini(struct sfxge_softc *sc);
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extern int sfxge_dma_alloc(struct sfxge_softc *sc, bus_size_t len,
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efsys_mem_t *esmp);
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extern void sfxge_dma_free(efsys_mem_t *esmp);
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extern int sfxge_dma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map,
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struct mbuf **mp, bus_dma_segment_t *segs, int *nsegs, int maxsegs);
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/*
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* From sfxge_ev.c.
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*/
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extern int sfxge_ev_init(struct sfxge_softc *sc);
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extern void sfxge_ev_fini(struct sfxge_softc *sc);
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extern int sfxge_ev_start(struct sfxge_softc *sc);
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extern void sfxge_ev_stop(struct sfxge_softc *sc);
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extern int sfxge_ev_qpoll(struct sfxge_softc *sc, unsigned int index);
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/*
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* From sfxge_intr.c.
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*/
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extern int sfxge_intr_init(struct sfxge_softc *sc);
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extern void sfxge_intr_fini(struct sfxge_softc *sc);
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extern int sfxge_intr_start(struct sfxge_softc *sc);
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extern void sfxge_intr_stop(struct sfxge_softc *sc);
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/*
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* From sfxge_mcdi.c.
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*/
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extern int sfxge_mcdi_init(struct sfxge_softc *sc);
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extern void sfxge_mcdi_fini(struct sfxge_softc *sc);
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/*
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* From sfxge_port.c.
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*/
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extern int sfxge_port_init(struct sfxge_softc *sc);
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extern void sfxge_port_fini(struct sfxge_softc *sc);
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extern int sfxge_port_start(struct sfxge_softc *sc);
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extern void sfxge_port_stop(struct sfxge_softc *sc);
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extern void sfxge_mac_link_update(struct sfxge_softc *sc,
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efx_link_mode_t mode);
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extern int sfxge_mac_filter_set(struct sfxge_softc *sc);
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extern int sfxge_port_ifmedia_init(struct sfxge_softc *sc);
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#define SFXGE_MAX_MTU (9 * 1024)
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#endif /* _SFXGE_H */
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