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4f53e3cc7a
several new features are added: - support vc/vp shaping - support pvc shadow interface code cleanup: - remove WMAYBE related code. ENI WMAYBE DMA doen't work. - remove updating if_lastchange for every packet. - BPF related code is moved to midway.c as it should be. (bpfwrite should work if atm_pseudohdr and LLC/SNAP are prepended.) - BPF link type is changed to DLT_ATM_RFC1483. BPF now understands only LLC/SNAP!! (because bpf can't handle variable link header length.) It is recommended to use LLC/SNAP instead of NULL encapsulation for various reasons. (BPF, IPv6, interoperability, etc.) the code has been used for months in ALTQ and KAME IPv6. OKed by phk long time ago.
207 lines
7.5 KiB
C
207 lines
7.5 KiB
C
/* $NetBSD: midwayvar.h,v 1.10 1997/03/20 21:34:46 chuck Exp $ */
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/*
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*
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* Copyright (c) 1996 Charles D. Cranor and Washington University.
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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
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles D. Cranor and
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* Washington University.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* m i d w a y v a r . h
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*
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* we define the en_softc here so that bus specific modules can allocate
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* it as the first item in their softc. note that BSD-required
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* "struct device" is in the mid_softc!
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*
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* author: Chuck Cranor <chuck@ccrc.wustl.edu>
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*/
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/*
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* params needed to determine softc size
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*/
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#ifndef EN_NTX
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#define EN_NTX 8 /* number of tx bufs to use */
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#endif
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#ifndef EN_TXSZ
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#define EN_TXSZ 32 /* trasmit buf size in KB */
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#endif
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#ifndef EN_RXSZ
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#define EN_RXSZ 32 /* recv buf size in KB */
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#endif
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#define EN_MAXNRX ((2048-(EN_NTX*EN_TXSZ))/EN_RXSZ)
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/* largest possible NRX (depends on RAM size) */
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#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
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#define EN_INTR_TYPE int
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#define EN_INTR_RET(X) return(X)
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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#define EN_IOCTL_CMDT u_long
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#elif defined(__bsdi__)
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#define EN_IOCTL_CMDT int
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#endif
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#elif defined(__FreeBSD__)
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#define EN_INTR_TYPE void
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#define EN_INTR_RET(X) return
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#define EN_IOCTL_CMDT u_long
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struct device {
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char dv_xname[IFNAMSIZ];
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};
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#define DV_IFNET 1
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struct cfdriver {
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int zero;
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char *name;
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int one;
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int cd_ndevs;
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void *cd_devs[NEN];
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};
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#endif
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/*
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* softc
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*/
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struct en_softc {
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/* bsd glue */
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struct device sc_dev; /* system device */
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struct ifnet enif; /* network ifnet handle */
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/* bus glue */
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bus_space_tag_t en_memt; /* for EN_READ/EN_WRITE */
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bus_space_handle_t en_base; /* base of en card */
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bus_size_t en_obmemsz; /* size of en card (bytes) */
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void (*en_busreset) __P((void *));
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/* bus specific reset function */
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/* serv list */
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u_int32_t hwslistp; /* hw pointer to service list (byte offset) */
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u_int16_t swslist[MID_SL_N]; /* software service list (see en_service()) */
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u_int16_t swsl_head, /* ends of swslist (index into swslist) */
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swsl_tail;
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u_int32_t swsl_size; /* # of items in swsl */
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/* xmit dma */
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u_int32_t dtq[MID_DTQ_N]; /* sw copy of dma q (see ENIDQ macros) */
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u_int32_t dtq_free; /* # of dtq's free */
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u_int32_t dtq_us; /* software copy of our pointer (byte offset) */
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u_int32_t dtq_chip; /* chip's pointer (byte offset) */
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u_int32_t need_dtqs; /* true if we ran out of DTQs */
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/* recv dma */
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u_int32_t drq[MID_DRQ_N]; /* sw copy of dma q (see ENIDQ macros) */
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u_int32_t drq_free; /* # of drq's free */
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u_int32_t drq_us; /* software copy of our pointer (byte offset) */
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u_int32_t drq_chip; /* chip's pointer (byte offset) */
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u_int32_t need_drqs; /* true if we ran out of DRQs */
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/* xmit buf ctrl. (per channel) */
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struct {
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u_int32_t mbsize; /* # mbuf bytes we are using (max=TXHIWAT) */
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u_int32_t bfree; /* # free bytes in buffer (not dma or xmit) */
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u_int32_t start, stop; /* ends of buffer area (byte offset) */
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u_int32_t cur; /* next free area (byte offset) */
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u_int32_t nref; /* # of VCs using this channel */
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struct ifqueue indma; /* mbufs being dma'd now */
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struct ifqueue q; /* mbufs waiting for dma now */
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} txslot[MID_NTX_CH];
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/* xmit vc ctrl. (per vc) */
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u_int8_t txspeed[MID_N_VC]; /* speed of tx on a VC */
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u_int8_t txvc2slot[MID_N_VC]; /* map VC to slot */
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/* recv vc ctrl. (per vc). maps VC number to recv slot */
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u_int16_t rxvc2slot[MID_N_VC];
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int en_nrx; /* # of active rx slots */
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/* recv buf ctrl. (per recv slot) */
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struct {
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void *rxhand; /* recv. handle if doing direct delivery */
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u_int32_t mode; /* saved copy of mode info */
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u_int32_t start, stop; /* ends of my buffer area */
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u_int32_t cur; /* where I am at */
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u_int16_t atm_vci; /* backpointer to VCI */
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u_int8_t atm_flags; /* copy of atm_flags from atm_ph */
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u_int8_t oth_flags; /* other flags */
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u_int32_t raw_threshold; /* for raw mode */
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struct ifqueue indma; /* mbufs being dma'd now */
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struct ifqueue q; /* mbufs waiting for dma now */
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} rxslot[EN_MAXNRX]; /* recv info */
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u_int8_t macaddr[6]; /* card unique mac address */
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/* stats */
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u_int32_t vtrash; /* sw copy of counter */
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u_int32_t otrash; /* sw copy of counter */
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u_int32_t ttrash; /* # of RBD's with T bit set */
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u_int32_t mfix; /* # of times we had to call mfix */
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u_int32_t mfixfail; /* # of times mfix failed */
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u_int32_t headbyte; /* # of times we used BYTE DMA at front */
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u_int32_t tailbyte; /* # of times we used BYTE DMA at end */
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u_int32_t tailflush; /* # of times we had to FLUSH out DMA bytes */
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u_int32_t txmbovr; /* # of times we dropped due to mbsize */
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u_int32_t dmaovr; /* tx dma overflow count */
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u_int32_t txoutspace; /* out of space in xmit buffer */
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u_int32_t txdtqout; /* out of DTQs */
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u_int32_t launch; /* total # of launches */
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u_int32_t lheader; /* # of launches without OB header */
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u_int32_t ltail; /* # of launches without OB tail */
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u_int32_t hwpull; /* # of pulls off hardware service list */
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u_int32_t swadd; /* # of pushes on sw service list */
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u_int32_t rxqnotus; /* # of times we pull from rx q, but fail */
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u_int32_t rxqus; /* # of good pulls from rx q */
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u_int32_t rxoutboth; /* # of times out of mbufs and DRQs */
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u_int32_t rxdrqout; /* # of times out of DRQs */
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u_int32_t rxmbufout; /* # of time out of mbufs */
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/* random stuff */
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u_int32_t ipl; /* sbus interrupt lvl (1 on pci?) */
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u_int8_t bestburstcode; /* code of best burst we can use */
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u_int8_t bestburstlen; /* length of best burst (bytes) */
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u_int8_t bestburstshift; /* (x >> shift) == (x / bestburstlen) */
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u_int8_t bestburstmask; /* bits to check if not multiple of burst */
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u_int8_t alburst; /* align dma bursts? */
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u_int8_t is_adaptec; /* adaptec version of midway? */
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};
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/*
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* exported functions
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*/
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void en_attach __P((struct en_softc *));
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EN_INTR_TYPE en_intr __P((void *));
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void en_reset __P((struct en_softc *));
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