Annotation of sys/dev/ic/midwayvar.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: midwayvar.h,v 1.12 2003/10/21 18:58:49 jmc Exp $ */
! 2:
! 3: /*
! 4: *
! 5: * Copyright (c) 1996 Charles D. Cranor and Washington University.
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. All advertising materials mentioning features or use of this software
! 17: * must display the following acknowledgement:
! 18: * This product includes software developed by Charles D. Cranor and
! 19: * Washington University.
! 20: * 4. The name of the author may not be used to endorse or promote products
! 21: * derived from this software without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 26: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 27: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 28: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 29: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 30: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 31: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 32: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 33: */
! 34:
! 35: /*
! 36: * m i d w a y v a r . h
! 37: *
! 38: * we define the en_softc here so that bus specific modules can allocate
! 39: * it as the first item in their softc. note that BSD-required
! 40: * "struct device" is in the mid_softc!
! 41: *
! 42: * author: Chuck Cranor <chuck@ccrc.wustl.edu>
! 43: */
! 44:
! 45: /*
! 46: * params needed to determine softc size
! 47: */
! 48:
! 49: #ifndef EN_NTX
! 50: #define EN_NTX 8 /* number of tx bufs to use */
! 51: #endif
! 52: #ifndef EN_TXSZ
! 53: #define EN_TXSZ 32 /* transmit buf size in KB */
! 54: #endif
! 55: #ifndef EN_RXSZ
! 56: #define EN_RXSZ 32 /* recv buf size in KB */
! 57: #endif
! 58: #define EN_MAXNRX ((2048-(EN_NTX*EN_TXSZ))/EN_RXSZ)
! 59: /* largest possible NRX (depends on RAM size) */
! 60:
! 61:
! 62: #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
! 63: #define EN_INTR_TYPE int
! 64: #define EN_INTR_RET(X) return(X)
! 65: #if defined(__NetBSD__) || defined(__OpenBSD__)
! 66: #define EN_IOCTL_CMDT u_long
! 67: #elif defined(__bsdi__)
! 68: #define EN_IOCTL_CMDT int
! 69: #endif
! 70:
! 71: #elif defined(__FreeBSD__)
! 72:
! 73: #define EN_INTR_TYPE void
! 74: #define EN_INTR_RET(X) return
! 75: #define EN_IOCTL_CMDT int
! 76:
! 77: struct device {
! 78: char dv_xname[IFNAMSIZ];
! 79: };
! 80:
! 81: #define DV_IFNET 1
! 82:
! 83: struct cfdriver {
! 84: int zero;
! 85: char *name;
! 86: int one;
! 87: int cd_ndevs;
! 88: void *cd_devs[NEN];
! 89: };
! 90:
! 91: #endif
! 92:
! 93:
! 94: /*
! 95: * softc
! 96: */
! 97:
! 98: struct en_softc {
! 99: /* bsd glue */
! 100: struct device sc_dev; /* system device */
! 101: struct ifnet enif; /* network ifnet handle */
! 102:
! 103: /* bus glue */
! 104: bus_space_tag_t en_memt; /* for EN_READ/EN_WRITE */
! 105: bus_space_handle_t en_base; /* base of en card */
! 106: bus_size_t en_obmemsz; /* size of en card (bytes) */
! 107: void (*en_busreset)(void *); /* bus specific reset function */
! 108:
! 109: /* serv list */
! 110: u_int32_t hwslistp; /* hw pointer to service list (byte offset) */
! 111: u_int16_t swslist[MID_SL_N]; /* software service list (see en_service()) */
! 112: u_int16_t swsl_head, /* ends of swslist (index into swslist) */
! 113: swsl_tail;
! 114: u_int32_t swsl_size; /* # of items in swsl */
! 115:
! 116:
! 117: /* xmit dma */
! 118: u_int32_t dtq[MID_DTQ_N]; /* sw copy of dma q (see ENIDQ macros) */
! 119: u_int32_t dtq_free; /* # of dtq's free */
! 120: u_int32_t dtq_us; /* software copy of our pointer (byte offset) */
! 121: u_int32_t dtq_chip; /* chip's pointer (byte offset) */
! 122: u_int32_t need_dtqs; /* true if we ran out of DTQs */
! 123:
! 124: /* recv dma */
! 125: u_int32_t drq[MID_DRQ_N]; /* sw copy of dma q (see ENIDQ macros) */
! 126: u_int32_t drq_free; /* # of drq's free */
! 127: u_int32_t drq_us; /* software copy of our pointer (byte offset) */
! 128: u_int32_t drq_chip; /* chip's pointer (byte offset) */
! 129: u_int32_t need_drqs; /* true if we ran out of DRQs */
! 130:
! 131: /* xmit buf ctrl. (per channel) */
! 132: struct {
! 133: u_int32_t mbsize; /* # mbuf bytes we are using (max=TXHIWAT) */
! 134: u_int32_t bfree; /* # free bytes in buffer (not dma or xmit) */
! 135: u_int32_t start, stop; /* ends of buffer area (byte offset) */
! 136: u_int32_t cur; /* next free area (byte offset) */
! 137: u_int32_t nref; /* # of VCs using this channel */
! 138: struct ifqueue indma; /* mbufs being dma'd now */
! 139: struct ifqueue q; /* mbufs waiting for dma now */
! 140: } txslot[MID_NTX_CH];
! 141:
! 142: /* xmit vc ctrl. (per vc) */
! 143: u_int8_t txspeed[MID_N_VC]; /* speed of tx on a VC */
! 144: u_int8_t txvc2slot[MID_N_VC]; /* map VC to slot */
! 145:
! 146: /* recv vc ctrl. (per vc). maps VC number to recv slot */
! 147: u_int16_t rxvc2slot[MID_N_VC];
! 148: int en_nrx; /* # of active rx slots */
! 149:
! 150: /* recv buf ctrl. (per recv slot) */
! 151: struct {
! 152: void *rxhand; /* recv. handle if doing direct delivery */
! 153: u_int32_t mode; /* saved copy of mode info */
! 154: u_int32_t start, stop; /* ends of my buffer area */
! 155: u_int32_t cur; /* where I am at */
! 156: u_int16_t atm_vci; /* backpointer to VCI */
! 157: u_int8_t atm_flags; /* copy of atm_flags from atm_ph */
! 158: u_int8_t oth_flags; /* other flags */
! 159: u_int32_t raw_threshold; /* for raw mode */
! 160: struct ifqueue indma; /* mbufs being dma'd now */
! 161: struct ifqueue q; /* mbufs waiting for dma now */
! 162: } rxslot[EN_MAXNRX]; /* recv info */
! 163:
! 164: /* stats */
! 165: u_int32_t vtrash; /* sw copy of counter */
! 166: u_int32_t otrash; /* sw copy of counter */
! 167: u_int32_t ttrash; /* # of RBD's with T bit set */
! 168: u_int32_t mfix; /* # of times we had to call mfix */
! 169: u_int32_t mfixfail; /* # of times mfix failed */
! 170: u_int32_t headbyte; /* # of times we used BYTE DMA at front */
! 171: u_int32_t tailbyte; /* # of times we used BYTE DMA at end */
! 172: u_int32_t tailflush; /* # of times we had to FLUSH out DMA bytes */
! 173: u_int32_t txmbovr; /* # of times we dropped due to mbsize */
! 174: u_int32_t dmaovr; /* tx dma overflow count */
! 175: u_int32_t txoutspace; /* out of space in xmit buffer */
! 176: u_int32_t txdtqout; /* out of DTQs */
! 177: u_int32_t launch; /* total # of launches */
! 178: u_int32_t lheader; /* # of launches without OB header */
! 179: u_int32_t ltail; /* # of launches without OB tail */
! 180: u_int32_t hwpull; /* # of pulls off hardware service list */
! 181: u_int32_t swadd; /* # of pushes on sw service list */
! 182: u_int32_t rxqnotus; /* # of times we pull from rx q, but fail */
! 183: u_int32_t rxqus; /* # of good pulls from rx q */
! 184: u_int32_t rxoutboth; /* # of times out of mbufs and DRQs */
! 185: u_int32_t rxdrqout; /* # of times out of DRQs */
! 186: u_int32_t rxmbufout; /* # of time out of mbufs */
! 187:
! 188: /* random stuff */
! 189: u_int32_t ipl; /* sbus interrupt lvl (1 on pci?) */
! 190: u_int8_t bestburstcode; /* code of best burst we can use */
! 191: u_int8_t bestburstlen; /* length of best burst (bytes) */
! 192: u_int8_t bestburstshift; /* (x >> shift) == (x / bestburstlen) */
! 193: u_int8_t bestburstmask; /* bits to check if not multiple of burst */
! 194: u_int8_t alburst; /* align dma bursts? */
! 195: u_int8_t is_adaptec; /* adaptec version of midway? */
! 196: };
! 197:
! 198: /*
! 199: * exported functions
! 200: */
! 201:
! 202: void en_attach(struct en_softc *);
! 203: EN_INTR_TYPE en_intr(void *);
! 204: void en_reset(struct en_softc *);
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