b2d59f4234
- Remove NetBSD-style or-ed together BUS_DMASYNC operations, in some cases relaxing the (intended) syncing operation a bit. - Stop pretending that that we can sync part of a dmamap: replace the GEM_CDTXSYNC and GEM_CDRXSYNC macros with GEM_CDSYNC to sync the complete control map, and combine syncs wherever possible to avoid the overhead. - Sync all maps before unloading them. - Remove a few syncs which should be unnecessary.
237 lines
7.1 KiB
C
237 lines
7.1 KiB
C
/*
|
|
* Copyright (C) 2001 Eduardo Horvath.
|
|
* All rights reserved.
|
|
*
|
|
* 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 ``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 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.
|
|
*
|
|
* from: NetBSD: gemvar.h,v 1.8 2002/05/15 02:36:12 matt Exp
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _IF_GEMVAR_H
|
|
#define _IF_GEMVAR_H
|
|
|
|
|
|
#include <sys/queue.h>
|
|
#include <sys/callout.h>
|
|
|
|
/*
|
|
* Misc. definitions for the Sun ``Gem'' Ethernet controller family driver.
|
|
*/
|
|
|
|
/*
|
|
* Transmit descriptor list size. This is arbitrary, but allocate
|
|
* enough descriptors for 64 pending transmissions and 16 segments
|
|
* per packet.
|
|
*/
|
|
#define GEM_NTXSEGS 16
|
|
|
|
#define GEM_TXQUEUELEN 64
|
|
#define GEM_NTXDESC (GEM_TXQUEUELEN * GEM_NTXSEGS)
|
|
#define GEM_MAXTXFREE (GEM_NTXDESC - 1)
|
|
#define GEM_NTXDESC_MASK (GEM_NTXDESC - 1)
|
|
#define GEM_NEXTTX(x) ((x + 1) & GEM_NTXDESC_MASK)
|
|
|
|
/*
|
|
* Receive descriptor list size. We have one Rx buffer per incoming
|
|
* packet, so this logic is a little simpler.
|
|
*/
|
|
#define GEM_NRXDESC 128
|
|
#define GEM_NRXDESC_MASK (GEM_NRXDESC - 1)
|
|
#define GEM_PREVRX(x) ((x - 1) & GEM_NRXDESC_MASK)
|
|
#define GEM_NEXTRX(x) ((x + 1) & GEM_NRXDESC_MASK)
|
|
|
|
/*
|
|
* How many ticks to wait until to retry on a RX descriptor that is still owned
|
|
* by the hardware.
|
|
*/
|
|
#define GEM_RXOWN_TICKS (hz / 50)
|
|
|
|
/*
|
|
* Control structures are DMA'd to the GEM chip. We allocate them in
|
|
* a single clump that maps to a single DMA segment to make several things
|
|
* easier.
|
|
*/
|
|
struct gem_control_data {
|
|
/*
|
|
* The transmit descriptors.
|
|
*/
|
|
struct gem_desc gcd_txdescs[GEM_NTXDESC];
|
|
|
|
/*
|
|
* The receive descriptors.
|
|
*/
|
|
struct gem_desc gcd_rxdescs[GEM_NRXDESC];
|
|
};
|
|
|
|
#define GEM_CDOFF(x) offsetof(struct gem_control_data, x)
|
|
#define GEM_CDTXOFF(x) GEM_CDOFF(gcd_txdescs[(x)])
|
|
#define GEM_CDRXOFF(x) GEM_CDOFF(gcd_rxdescs[(x)])
|
|
|
|
/*
|
|
* Software state for transmit job mbufs (may be elements of mbuf chains).
|
|
*/
|
|
struct gem_txsoft {
|
|
struct mbuf *txs_mbuf; /* head of our mbuf chain */
|
|
bus_dmamap_t txs_dmamap; /* our DMA map */
|
|
int txs_firstdesc; /* first descriptor in packet */
|
|
int txs_lastdesc; /* last descriptor in packet */
|
|
int txs_ndescs; /* number of descriptors */
|
|
STAILQ_ENTRY(gem_txsoft) txs_q;
|
|
};
|
|
|
|
STAILQ_HEAD(gem_txsq, gem_txsoft);
|
|
|
|
/* Argument structure for busdma callback */
|
|
struct gem_txdma {
|
|
struct gem_softc *txd_sc;
|
|
struct gem_txsoft *txd_txs;
|
|
};
|
|
|
|
/*
|
|
* Software state for receive jobs.
|
|
*/
|
|
struct gem_rxsoft {
|
|
struct mbuf *rxs_mbuf; /* head of our mbuf chain */
|
|
bus_dmamap_t rxs_dmamap; /* our DMA map */
|
|
bus_addr_t rxs_paddr; /* physical address of the segment */
|
|
};
|
|
|
|
/*
|
|
* Software state per device.
|
|
*/
|
|
struct gem_softc {
|
|
struct arpcom sc_arpcom; /* arp common data */
|
|
device_t sc_miibus;
|
|
struct mii_data *sc_mii; /* MII media control */
|
|
device_t sc_dev; /* generic device information */
|
|
struct callout sc_tick_ch; /* tick callout */
|
|
struct callout sc_rx_ch; /* delayed rx callout */
|
|
|
|
/* The following bus handles are to be provided by the bus front-end */
|
|
bus_space_tag_t sc_bustag; /* bus tag */
|
|
bus_dma_tag_t sc_pdmatag; /* parent bus dma tag */
|
|
bus_dma_tag_t sc_rdmatag; /* RX bus dma tag */
|
|
bus_dma_tag_t sc_tdmatag; /* TX bus dma tag */
|
|
bus_dma_tag_t sc_cdmatag; /* control data bus dma tag */
|
|
bus_dmamap_t sc_dmamap; /* bus dma handle */
|
|
bus_space_handle_t sc_h; /* bus space handle for all regs */
|
|
|
|
int sc_phys[2]; /* MII instance -> PHY map */
|
|
|
|
int sc_mif_config; /* Selected MII reg setting */
|
|
|
|
int sc_pci; /* XXXXX -- PCI buses are LE. */
|
|
u_int sc_variant; /* which GEM are we dealing with? */
|
|
#define GEM_UNKNOWN 0 /* don't know */
|
|
#define GEM_SUN_GEM 1 /* Sun GEM variant */
|
|
#define GEM_APPLE_GMAC 2 /* Apple GMAC variant */
|
|
|
|
u_int sc_flags; /* */
|
|
#define GEM_GIGABIT 0x0001 /* has a gigabit PHY */
|
|
|
|
/*
|
|
* Ring buffer DMA stuff.
|
|
*/
|
|
bus_dma_segment_t sc_cdseg; /* control data memory */
|
|
int sc_cdnseg; /* number of segments */
|
|
bus_dmamap_t sc_cddmamap; /* control data DMA map */
|
|
bus_addr_t sc_cddma;
|
|
|
|
/*
|
|
* Software state for transmit and receive descriptors.
|
|
*/
|
|
struct gem_txsoft sc_txsoft[GEM_TXQUEUELEN];
|
|
struct gem_rxsoft sc_rxsoft[GEM_NRXDESC];
|
|
|
|
/*
|
|
* Control data structures.
|
|
*/
|
|
struct gem_control_data *sc_control_data;
|
|
#define sc_txdescs sc_control_data->gcd_txdescs
|
|
#define sc_rxdescs sc_control_data->gcd_rxdescs
|
|
|
|
int sc_txfree; /* number of free Tx descriptors */
|
|
int sc_txnext; /* next ready Tx descriptor */
|
|
int sc_txwin; /* Tx descriptors since last Tx int */
|
|
|
|
struct gem_txsq sc_txfreeq; /* free Tx descsofts */
|
|
struct gem_txsq sc_txdirtyq; /* dirty Tx descsofts */
|
|
|
|
int sc_rxptr; /* next ready RX descriptor/descsoft */
|
|
int sc_rxfifosize; /* Rx FIFO size (bytes) */
|
|
|
|
/* ========== */
|
|
int sc_inited;
|
|
int sc_debug;
|
|
int sc_ifflags;
|
|
};
|
|
|
|
#define GEM_DMA_READ(sc, v) (((sc)->sc_pci) ? le64toh(v) : be64toh(v))
|
|
#define GEM_DMA_WRITE(sc, v) (((sc)->sc_pci) ? htole64(v) : htobe64(v))
|
|
|
|
#define GEM_CDTXADDR(sc, x) ((sc)->sc_cddma + GEM_CDTXOFF((x)))
|
|
#define GEM_CDRXADDR(sc, x) ((sc)->sc_cddma + GEM_CDRXOFF((x)))
|
|
|
|
#define GEM_CDSYNC(sc, ops) \
|
|
bus_dmamap_sync((sc)->sc_cdmatag, (sc)->sc_cddmamap, (ops)); \
|
|
|
|
#define GEM_INIT_RXDESC(sc, x) \
|
|
do { \
|
|
struct gem_rxsoft *__rxs = &sc->sc_rxsoft[(x)]; \
|
|
struct gem_desc *__rxd = &sc->sc_rxdescs[(x)]; \
|
|
struct mbuf *__m = __rxs->rxs_mbuf; \
|
|
\
|
|
__m->m_data = __m->m_ext.ext_buf; \
|
|
__rxd->gd_addr = \
|
|
GEM_DMA_WRITE((sc), __rxs->rxs_paddr); \
|
|
__rxd->gd_flags = \
|
|
GEM_DMA_WRITE((sc), \
|
|
(((__m->m_ext.ext_size)<<GEM_RD_BUFSHIFT) \
|
|
& GEM_RD_BUFSIZE) | GEM_RD_OWN); \
|
|
} while (0)
|
|
|
|
#ifdef _KERNEL
|
|
extern devclass_t gem_devclass;
|
|
|
|
int gem_attach(struct gem_softc *);
|
|
void gem_detach(struct gem_softc *);
|
|
void gem_suspend(struct gem_softc *);
|
|
void gem_resume(struct gem_softc *);
|
|
void gem_intr(void *);
|
|
|
|
int gem_mediachange(struct ifnet *);
|
|
void gem_mediastatus(struct ifnet *, struct ifmediareq *);
|
|
|
|
void gem_reset(struct gem_softc *);
|
|
|
|
/* MII methods & callbacks */
|
|
int gem_mii_readreg(device_t, int, int);
|
|
int gem_mii_writereg(device_t, int, int, int);
|
|
void gem_mii_statchg(device_t);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
|
|
#endif
|