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/* $OpenBSD: midwayvar.h,v 1.12 2003/10/21 18:58:49 jmc 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.
*/
/*
* 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. note that BSD-required
* "struct device" is in the mid_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 /* transmit buf size in KB */
#endif
#ifndef EN_RXSZ
#define EN_RXSZ 32 /* recv buf size in KB */
#endif
#define EN_MAXNRX ((2048-(EN_NTX*EN_TXSZ))/EN_RXSZ)
/* largest possible NRX (depends on RAM size) */
#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
#define EN_INTR_TYPE int
#define EN_INTR_RET(X) return(X)
#if defined(__NetBSD__) || defined(__OpenBSD__)
#define EN_IOCTL_CMDT u_long
#elif defined(__bsdi__)
#define EN_IOCTL_CMDT int
#endif
#elif defined(__FreeBSD__)
#define EN_INTR_TYPE void
#define EN_INTR_RET(X) return
#define EN_IOCTL_CMDT int
struct device {
char dv_xname[IFNAMSIZ];
};
#define DV_IFNET 1
struct cfdriver {
int zero;
char *name;
int one;
int cd_ndevs;
void *cd_devs[NEN];
};
#endif
/*
* softc
*/
struct en_softc {
/* bsd glue */
struct device sc_dev; /* system device */
struct ifnet enif; /* network ifnet handle */
/* 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 */
/* serv list */
u_int32_t hwslistp; /* hw pointer to service list (byte offset) */
u_int16_t swslist[MID_SL_N]; /* software service list (see en_service()) */
u_int16_t swsl_head, /* ends of swslist (index into swslist) */
swsl_tail;
u_int32_t swsl_size; /* # of items in swsl */
/* xmit dma */
u_int32_t dtq[MID_DTQ_N]; /* sw copy of dma q (see ENIDQ macros) */
u_int32_t dtq_free; /* # of dtq's free */
u_int32_t dtq_us; /* software copy of our pointer (byte offset) */
u_int32_t dtq_chip; /* chip's pointer (byte offset) */
u_int32_t need_dtqs; /* true if we ran out of DTQs */
/* recv dma */
u_int32_t drq[MID_DRQ_N]; /* sw copy of dma q (see ENIDQ macros) */
u_int32_t drq_free; /* # of drq's free */
u_int32_t drq_us; /* software copy of our pointer (byte offset) */
u_int32_t drq_chip; /* chip's pointer (byte offset) */
u_int32_t need_drqs; /* true if we ran out of DRQs */
/* xmit buf ctrl. (per channel) */
struct {
u_int32_t mbsize; /* # mbuf bytes we are using (max=TXHIWAT) */
u_int32_t bfree; /* # free bytes in buffer (not dma or xmit) */
u_int32_t start, stop; /* ends of buffer area (byte offset) */
u_int32_t cur; /* next free area (byte offset) */
u_int32_t nref; /* # of VCs using this channel */
struct ifqueue indma; /* mbufs being dma'd now */
struct ifqueue q; /* mbufs waiting for dma now */
} txslot[MID_NTX_CH];
/* xmit vc ctrl. (per vc) */
u_int8_t txspeed[MID_N_VC]; /* speed of tx on a VC */
u_int8_t txvc2slot[MID_N_VC]; /* map VC to slot */
/* recv vc ctrl. (per vc). maps VC number to recv slot */
u_int16_t rxvc2slot[MID_N_VC];
int en_nrx; /* # of active rx slots */
/* recv buf ctrl. (per recv slot) */
struct {
void *rxhand; /* recv. handle if doing direct delivery */
u_int32_t mode; /* saved copy of mode info */
u_int32_t start, stop; /* ends of my buffer area */
u_int32_t cur; /* where I am at */
u_int16_t atm_vci; /* backpointer to VCI */
u_int8_t atm_flags; /* copy of atm_flags from atm_ph */
u_int8_t oth_flags; /* other flags */
u_int32_t raw_threshold; /* for raw mode */
struct ifqueue indma; /* mbufs being dma'd now */
struct ifqueue q; /* mbufs waiting for dma now */
} rxslot[EN_MAXNRX]; /* recv info */
/* stats */
u_int32_t vtrash; /* sw copy of counter */
u_int32_t otrash; /* sw copy of counter */
u_int32_t ttrash; /* # of RBD's with T bit set */
u_int32_t mfix; /* # of times we had to call mfix */
u_int32_t mfixfail; /* # of times mfix failed */
u_int32_t headbyte; /* # of times we used BYTE DMA at front */
u_int32_t tailbyte; /* # of times we used BYTE DMA at end */
u_int32_t tailflush; /* # of times we had to FLUSH out DMA bytes */
u_int32_t txmbovr; /* # of times we dropped due to mbsize */
u_int32_t dmaovr; /* tx dma overflow count */
u_int32_t txoutspace; /* out of space in xmit buffer */
u_int32_t txdtqout; /* out of DTQs */
u_int32_t launch; /* total # of launches */
u_int32_t lheader; /* # of launches without OB header */
u_int32_t ltail; /* # of launches without OB tail */
u_int32_t hwpull; /* # of pulls off hardware service list */
u_int32_t swadd; /* # of pushes on sw service list */
u_int32_t rxqnotus; /* # of times we pull from rx q, but fail */
u_int32_t rxqus; /* # of good pulls from rx q */
u_int32_t rxoutboth; /* # of times out of mbufs and DRQs */
u_int32_t rxdrqout; /* # of times out of DRQs */
u_int32_t rxmbufout; /* # of time out of mbufs */
/* random stuff */
u_int32_t ipl; /* sbus interrupt lvl (1 on pci?) */
u_int8_t bestburstcode; /* code of best burst we can use */
u_int8_t bestburstlen; /* length of best burst (bytes) */
u_int8_t bestburstshift; /* (x >> shift) == (x / bestburstlen) */
u_int8_t bestburstmask; /* bits to check if not multiple of burst */
u_int8_t alburst; /* align dma bursts? */
u_int8_t is_adaptec; /* adaptec version of midway? */
};
/*
* exported functions
*/
void en_attach(struct en_softc *);
EN_INTR_TYPE en_intr(void *);
void en_reset(struct en_softc *);
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