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freebsd-nq/sys/dev/sfxge/sfxge.h
George V. Neville-Neil bc85c897c7 The patch allows to check state of the software Tx queues at run time. 
Submitted by:   Andrew Rybchenko <arybchenko at solarflare.com>
Sponsored by:   Solarflare Communications, Inc.
2014-09-30 20:43:21 +00:00

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/*-
* Copyright (c) 2010-2011 Solarflare Communications, Inc.
* All rights reserved.
*
* This software was developed in part by Philip Paeps under contract for
* Solarflare Communications, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SFXGE_H
#define _SFXGE_H
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/condvar.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <vm/uma.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_media.h>
#include <net/if_types.h>
/*
* Backward-compatibility
*/
#ifndef CACHE_LINE_SIZE
/* This should be right on most machines the driver will be used on, and
* we needn't care too much about wasting a few KB per interface.
*/
#define CACHE_LINE_SIZE 128
#endif
#ifndef IFCAP_LINKSTATE
#define IFCAP_LINKSTATE 0
#endif
#ifndef IFCAP_VLAN_HWTSO
#define IFCAP_VLAN_HWTSO 0
#endif
#ifndef IFM_10G_T
#define IFM_10G_T IFM_UNKNOWN
#endif
#ifndef IFM_10G_KX4
#define IFM_10G_KX4 IFM_10G_CX4
#endif
#if __FreeBSD_version >= 800054
/* Networking core is multiqueue aware. We can manage our own TX
* queues and use m_pkthdr.flowid.
*/
#define SFXGE_HAVE_MQ
#endif
#if (__FreeBSD_version >= 800501 && __FreeBSD_version < 900000) || \
__FreeBSD_version >= 900003
#define SFXGE_HAVE_DESCRIBE_INTR
#endif
#ifdef IFM_ETH_RXPAUSE
#define SFXGE_HAVE_PAUSE_MEDIAOPTS
#endif
#ifndef CTLTYPE_U64
#define CTLTYPE_U64 CTLTYPE_QUAD
#endif
#include "sfxge_rx.h"
#include "sfxge_tx.h"
#define ROUNDUP_POW_OF_TWO(_n) (1ULL << flsl((_n) - 1))
#define SFXGE_IP_ALIGN 2
#define SFXGE_ETHERTYPE_LOOPBACK 0x9000 /* Xerox loopback */
enum sfxge_evq_state {
SFXGE_EVQ_UNINITIALIZED = 0,
SFXGE_EVQ_INITIALIZED,
SFXGE_EVQ_STARTING,
SFXGE_EVQ_STARTED
};
#define SFXGE_EV_BATCH 16384
struct sfxge_evq {
struct sfxge_softc *sc __aligned(CACHE_LINE_SIZE);
struct mtx lock __aligned(CACHE_LINE_SIZE);
enum sfxge_evq_state init_state;
unsigned int index;
unsigned int entries;
efsys_mem_t mem;
unsigned int buf_base_id;
boolean_t exception;
efx_evq_t *common;
unsigned int read_ptr;
unsigned int rx_done;
unsigned int tx_done;
/* Linked list of TX queues with completions to process */
struct sfxge_txq *txq;
struct sfxge_txq **txqs;
};
#define SFXGE_NDESCS 1024
#define SFXGE_MODERATION 30
enum sfxge_intr_state {
SFXGE_INTR_UNINITIALIZED = 0,
SFXGE_INTR_INITIALIZED,
SFXGE_INTR_TESTING,
SFXGE_INTR_STARTED
};
struct sfxge_intr_hdl {
int eih_rid;
void *eih_tag;
struct resource *eih_res;
};
struct sfxge_intr {
enum sfxge_intr_state state;
struct resource *msix_res;
struct sfxge_intr_hdl *table;
int n_alloc;
int type;
efsys_mem_t status;
uint32_t zero_count;
};
enum sfxge_mcdi_state {
SFXGE_MCDI_UNINITIALIZED = 0,
SFXGE_MCDI_INITIALIZED,
SFXGE_MCDI_BUSY,
SFXGE_MCDI_COMPLETED
};
struct sfxge_mcdi {
struct mtx lock;
struct cv cv;
enum sfxge_mcdi_state state;
efx_mcdi_transport_t transport;
};
struct sfxge_hw_stats {
clock_t update_time;
efsys_mem_t dma_buf;
void *decode_buf;
};
enum sfxge_port_state {
SFXGE_PORT_UNINITIALIZED = 0,
SFXGE_PORT_INITIALIZED,
SFXGE_PORT_STARTED
};
struct sfxge_port {
struct sfxge_softc *sc;
struct mtx lock;
enum sfxge_port_state init_state;
#ifndef SFXGE_HAVE_PAUSE_MEDIAOPTS
unsigned int wanted_fc;
#endif
struct sfxge_hw_stats phy_stats;
struct sfxge_hw_stats mac_stats;
efx_link_mode_t link_mode;
};
enum sfxge_softc_state {
SFXGE_UNINITIALIZED = 0,
SFXGE_INITIALIZED,
SFXGE_REGISTERED,
SFXGE_STARTED
};
struct sfxge_softc {
device_t dev;
struct sx softc_lock;
enum sfxge_softc_state init_state;
struct ifnet *ifnet;
unsigned int if_flags;
struct sysctl_oid *stats_node;
struct sysctl_oid *txqs_node;
struct task task_reset;
efx_family_t family;
caddr_t vpd_data;
size_t vpd_size;
efx_nic_t *enp;
struct mtx enp_lock;
unsigned int rxq_entries;
unsigned int txq_entries;
bus_dma_tag_t parent_dma_tag;
efsys_bar_t bar;
struct sfxge_intr intr;
struct sfxge_mcdi mcdi;
struct sfxge_port port;
uint32_t buffer_table_next;
struct sfxge_evq *evq[SFXGE_RX_SCALE_MAX];
unsigned int ev_moderation;
clock_t ev_stats_update_time;
uint64_t ev_stats[EV_NQSTATS];
uma_zone_t rxq_cache;
struct sfxge_rxq *rxq[SFXGE_RX_SCALE_MAX];
unsigned int rx_indir_table[SFXGE_RX_SCALE_MAX];
#ifdef SFXGE_HAVE_MQ
struct sfxge_txq *txq[SFXGE_TXQ_NTYPES + SFXGE_RX_SCALE_MAX];
#else
struct sfxge_txq *txq[SFXGE_TXQ_NTYPES];
#endif
struct ifmedia media;
size_t rx_prefix_size;
size_t rx_buffer_size;
uma_zone_t rx_buffer_zone;
#ifndef SFXGE_HAVE_MQ
struct mtx tx_lock __aligned(CACHE_LINE_SIZE);
#endif
};
#define SFXGE_LINK_UP(sc) ((sc)->port.link_mode != EFX_LINK_DOWN)
#define SFXGE_RUNNING(sc) ((sc)->ifnet->if_drv_flags & IFF_DRV_RUNNING)
#define SFXGE_PARAM(_name) "hw.sfxge." #_name
SYSCTL_DECL(_hw_sfxge);
/*
* From sfxge.c.
*/
extern void sfxge_schedule_reset(struct sfxge_softc *sc);
extern void sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n,
uint32_t *idp);
/*
* From sfxge_dma.c.
*/
extern int sfxge_dma_init(struct sfxge_softc *sc);
extern void sfxge_dma_fini(struct sfxge_softc *sc);
extern int sfxge_dma_alloc(struct sfxge_softc *sc, bus_size_t len,
efsys_mem_t *esmp);
extern void sfxge_dma_free(efsys_mem_t *esmp);
extern int sfxge_dma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map,
struct mbuf **mp, bus_dma_segment_t *segs, int *nsegs, int maxsegs);
/*
* From sfxge_ev.c.
*/
extern int sfxge_ev_init(struct sfxge_softc *sc);
extern void sfxge_ev_fini(struct sfxge_softc *sc);
extern int sfxge_ev_start(struct sfxge_softc *sc);
extern void sfxge_ev_stop(struct sfxge_softc *sc);
extern int sfxge_ev_qpoll(struct sfxge_softc *sc, unsigned int index);
/*
* From sfxge_intr.c.
*/
extern int sfxge_intr_init(struct sfxge_softc *sc);
extern void sfxge_intr_fini(struct sfxge_softc *sc);
extern int sfxge_intr_start(struct sfxge_softc *sc);
extern void sfxge_intr_stop(struct sfxge_softc *sc);
/*
* From sfxge_mcdi.c.
*/
extern int sfxge_mcdi_init(struct sfxge_softc *sc);
extern void sfxge_mcdi_fini(struct sfxge_softc *sc);
/*
* From sfxge_port.c.
*/
extern int sfxge_port_init(struct sfxge_softc *sc);
extern void sfxge_port_fini(struct sfxge_softc *sc);
extern int sfxge_port_start(struct sfxge_softc *sc);
extern void sfxge_port_stop(struct sfxge_softc *sc);
extern void sfxge_mac_link_update(struct sfxge_softc *sc,
efx_link_mode_t mode);
extern int sfxge_mac_filter_set(struct sfxge_softc *sc);
extern int sfxge_port_ifmedia_init(struct sfxge_softc *sc);
#define SFXGE_MAX_MTU (9 * 1024)
#endif /* _SFXGE_H */
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