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Diffstat (limited to 'sys/dev/en/midwayvar.h')
| -rw-r--r-- | sys/dev/en/midwayvar.h | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/sys/dev/en/midwayvar.h b/sys/dev/en/midwayvar.h new file mode 100644 index 0000000..7cbd3b2 --- /dev/null +++ b/sys/dev/en/midwayvar.h @@ -0,0 +1,230 @@ +/* $NetBSD: midwayvar.h,v 1.10 1997/03/20 21:34:46 chuck Exp $ */ + +/* + * + * Copyright (c) 1996 Charles D. Cranor and Washington University. + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Charles D. Cranor and + * Washington University. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * 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. + * + * $FreeBSD$ + */ + +/* + * m i d w a y v a r . h + * + * we define the en_softc here so that bus specific modules can allocate + * it as the first item in their softc. + * + * author: Chuck Cranor <chuck@ccrc.wustl.edu> + */ + +/* + * params needed to determine softc size + */ +#ifndef EN_NTX +#define EN_NTX 8 /* number of tx bufs to use */ +#endif +#ifndef EN_TXSZ +#define EN_TXSZ 32 /* trasmit buf size in KB */ +#endif +#ifndef EN_RXSZ +#define EN_RXSZ 32 /* recv buf size in KB */ +#endif + +/* largest possible NRX (depends on RAM size) */ +#define EN_MAXNRX ((2048 - (EN_NTX * EN_TXSZ)) / EN_RXSZ) + +#ifndef EN_MAX_DMASEG +#define EN_MAX_DMASEG 32 +#endif + +/* number of bytes to use in the first receive buffer. This must not be larger + * than MHLEN, should be a multiple of 64 and must be a multiple of 4. */ +#define EN_RX1BUF 128 + +/* + * Structure to hold DMA maps. These are handle via a typestable uma zone. + */ +struct en_map { + uintptr_t flags; /* map flags */ + struct en_map *rsvd2; /* see uma_zalloc(9) */ + struct en_softc *sc; /* back pointer */ + bus_dmamap_t map; /* the map */ +}; +#define ENMAP_LOADED 0x02 +#define ENMAP_ALLOC 0x01 + +#define EN_MAX_MAPS 400 + +/* + * Statistics + */ +struct en_stats { + uint32_t vtrash; /* sw copy of counter */ + uint32_t otrash; /* sw copy of counter */ + uint32_t ttrash; /* # of RBD's with T bit set */ + uint32_t mfixaddr; /* # of times we had to mfix an address */ + uint32_t mfixlen; /* # of times we had to mfix a lenght*/ + uint32_t mfixfail; /* # of times mfix failed */ + uint32_t txmbovr; /* # of times we dropped due to mbsize */ + uint32_t dmaovr; /* tx dma overflow count */ + uint32_t txoutspace; /* out of space in xmit buffer */ + uint32_t txdtqout; /* out of DTQs */ + uint32_t launch; /* total # of launches */ + uint32_t hwpull; /* # of pulls off hardware service list */ + uint32_t swadd; /* # of pushes on sw service list */ + uint32_t rxqnotus; /* # of times we pull from rx q, but fail */ + uint32_t rxqus; /* # of good pulls from rx q */ + uint32_t rxdrqout; /* # of times out of DRQs */ + uint32_t rxmbufout; /* # of time out of mbufs */ + uint32_t txnomap; /* out of DMA maps in TX */ +}; + +/* + * Each of these structures describes one of the eight transmit channels + */ +struct en_txslot { + uint32_t mbsize; /* # mbuf bytes in use (max=TXHIWAT) */ + uint32_t bfree; /* # free bytes in buffer */ + uint32_t start; /* start of buffer area (byte offset) */ + uint32_t stop; /* ends of buffer area (byte offset) */ + uint32_t cur; /* next free area (byte offset) */ + uint32_t nref; /* # of VCs using this channel */ + struct ifqueue q; /* mbufs waiting for DMA now */ + struct ifqueue indma; /* mbufs waiting for DMA now */ +}; + +/* + * Each of these structures is used for each of the receive buffers on the + * card. + */ +struct en_rxslot { + void *rxhand; /* recv. handle for direct delivery */ + uint32_t mode; /* saved copy of mode info */ + uint32_t start; /* begin of my buffer area */ + uint32_t stop; /* end of my buffer area */ + uint32_t cur; /* where I am at in the buffer */ + uint16_t atm_vci; /* backpointer to VCI */ + uint8_t atm_flags; /* copy of atm_flags from atm_ph */ + uint8_t oth_flags; /* other flags */ + uint32_t raw_threshold; /* for raw mode */ + struct ifqueue q; /* mbufs waiting for dma now */ + struct ifqueue indma; /* mbufs being dma'd now */ +}; + +/* + * softc + */ +struct en_softc { + /* bsd glue */ + struct ifatm ifatm; /* ATM network ifnet handle */ + device_t dev; + + /* bus glue */ + bus_space_tag_t en_memt; /* for EN_READ/EN_WRITE */ + bus_space_handle_t en_base; /* base of en card */ + bus_size_t en_obmemsz; /* size of en card (bytes) */ + void (*en_busreset)(void *); /* bus specific reset function */ + bus_dma_tag_t txtag; /* TX DMA tag */ + + /* serv list */ + uint32_t hwslistp; /* hw pointer to service list (byte offset) */ + uint16_t swslist[MID_SL_N]; /* software svc list (see en_service()) */ + uint16_t swsl_head; /* ends of swslist (index into swslist) */ + uint16_t swsl_tail; + uint32_t swsl_size; /* # of items in swsl */ + + /* xmit dma */ + uint32_t dtq[MID_DTQ_N];/* sw copy of dma q (see EN_DQ_MK macros) */ + uint32_t dtq_free; /* # of dtq's free */ + uint32_t dtq_us; /* software copy of our pointer (byte offset) */ + uint32_t dtq_chip; /* chip's pointer (byte offset) */ + uint32_t need_dtqs; /* true if we ran out of DTQs */ + + /* recv dma */ + uint32_t drq[MID_DRQ_N];/* sw copy of dma q (see ENIDQ macros) */ + uint32_t drq_free; /* # of drq's free */ + uint32_t drq_us; /* software copy of our pointer (byte offset) */ + uint32_t drq_chip; /* chip's pointer (byte offset) */ + uint32_t need_drqs; /* true if we ran out of DRQs */ + + /* xmit buf ctrl. (per channel) */ + struct en_txslot txslot[MID_NTX_CH]; + + /* xmit vc ctrl. (per vc) */ + uint8_t txspeed[MID_N_VC]; /* speed of tx on a VC */ + uint8_t txvc2slot[MID_N_VC]; /* map VC to slot */ + + /* recv vc ctrl. (per vc). maps VC number to recv slot */ + uint16_t rxvc2slot[MID_N_VC]; + int en_nrx; /* # of active rx slots */ + + /* recv buf ctrl. (per recv slot) */ + struct en_rxslot rxslot[EN_MAXNRX]; + + /* stats */ + struct en_stats stats; + + /* random stuff */ + uint32_t ipl; /* sbus interrupt lvl (1 on pci?) */ + uint8_t bestburstcode; /* code of best burst we can use */ + uint8_t bestburstlen; /* length of best burst (bytes) */ + uint8_t bestburstshift; /* (x >> shift) == (x / bestburstlen) */ + uint8_t bestburstmask; /* bits to check if not multiple of burst */ + uint8_t alburst; /* align dma bursts? */ + uint8_t noalbursts; /* don't use unaligned > 4 byte bursts */ + uint8_t is_adaptec; /* adaptec version of midway? */ + struct mbuf *padbuf; /* buffer of zeros for TX padding */ + + /* mutex to protect this structure and the associated hardware */ + struct mtx en_mtx; + + /* sysctl support */ + struct sysctl_ctx_list sysctl_ctx; + struct sysctl_oid *sysctl_tree; + + /* memory zones */ + uma_zone_t map_zone; + + /* media and phy */ + struct ifmedia media; + struct utopia utopia; + +#ifdef EN_DEBUG + /* debugging */ + u_int debug; +#endif +}; + +/* + * exported functions + */ +int en_attach(struct en_softc *); +void en_destroy(struct en_softc *); +void en_intr(void *); +void en_reset(struct en_softc *); |
