Annotation of sys/arch/hp300/dev/mb89352var.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: mb89352var.h,v 1.5 2004/12/22 21:11:12 miod Exp $ */
! 2: /* $NetBSD: mb89352var.h,v 1.6 2003/08/02 12:48:09 tsutsui Exp $ */
! 3: /* NecBSD: mb89352var.h,v 1.4 1998/03/14 07:31:22 kmatsuda Exp */
! 4:
! 5: /*-
! 6: * Copyright (c) 1996,97,98,99 The NetBSD Foundation, Inc.
! 7: * All rights reserved.
! 8: *
! 9: * This code is derived from software contributed to The NetBSD Foundation
! 10: * by Charles M. Hannum, Masaru Oki and Kouichi Matsuda.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by Charles M. Hannum.
! 23: * 4. The name of the author may not be used to endorse or promote products
! 24: * derived from this software without specific prior written permission.
! 25: *
! 26: * Copyright (c) 1994 Jarle Greipsland
! 27: * All rights reserved.
! 28: *
! 29: * Redistribution and use in source and binary forms, with or without
! 30: * modification, are permitted provided that the following conditions
! 31: * are met:
! 32: * 1. Redistributions of source code must retain the above copyright
! 33: * notice, this list of conditions and the following disclaimer.
! 34: * 2. Redistributions in binary form must reproduce the above copyright
! 35: * notice, this list of conditions and the following disclaimer in the
! 36: * documentation and/or other materials provided with the distribution.
! 37: * 3. The name of the author may not be used to endorse or promote products
! 38: * derived from this software without specific prior written permission.
! 39: *
! 40: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 41: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 42: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 43: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 44: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 45: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 46: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 47: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 48: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 49: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 50: * POSSIBILITY OF SUCH DAMAGE.
! 51: */
! 52: /*
! 53: * [NetBSD for NEC PC-98 series]
! 54: * Copyright (c) 1996, 1997, 1998
! 55: * NetBSD/pc98 porting staff. All rights reserved.
! 56: * Copyright (c) 1996, 1997, 1998
! 57: * Kouich Matsuda. All rights reserved.
! 58: */
! 59:
! 60: #ifndef _MB89352VAR_H_
! 61: #define _MB89352VAR_H_
! 62:
! 63: /*
! 64: * ACB. Holds additional information for each SCSI command Comments: We
! 65: * need a separate scsi command block because we may need to overwrite it
! 66: * with a request sense command. Basicly, we refrain from fiddling with
! 67: * the scsi_xfer struct (except do the expected updating of return values).
! 68: * We'll generally update: xs->{flags,resid,error,sense,status} and
! 69: * occasionally xs->retries.
! 70: */
! 71: struct spc_acb {
! 72: struct scsi_generic scsi_cmd;
! 73: int scsi_cmd_length;
! 74: u_char *data_addr; /* Saved data pointer */
! 75: int data_length; /* Residue */
! 76:
! 77: u_char target_stat; /* SCSI status byte */
! 78:
! 79: #ifdef notdef
! 80: struct spc_dma_seg dma[SPC_NSEG]; /* Physical addresses+len */
! 81: #endif
! 82:
! 83: TAILQ_ENTRY(spc_acb) chain;
! 84: struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */
! 85: int flags;
! 86: #define ACB_ALLOC 0x01
! 87: #define ACB_NEXUS 0x02
! 88: #define ACB_SENSE 0x04
! 89: #define ACB_ABORT 0x40
! 90: #define ACB_RESET 0x80
! 91: int timeout;
! 92: };
! 93:
! 94: /*
! 95: * Some info about each (possible) target on the SCSI bus. This should
! 96: * probably have been a "per target+lunit" structure, but we'll leave it at
! 97: * this for now.
! 98: */
! 99: struct spc_tinfo {
! 100: int cmds; /* #commands processed */
! 101: int dconns; /* #disconnects */
! 102: int touts; /* #timeouts */
! 103: int perrs; /* #parity errors */
! 104: int senses; /* #request sense commands sent */
! 105: ushort lubusy; /* What local units/subr. are busy? */
! 106: u_char flags;
! 107: #define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */
! 108: #define DO_WIDE 0x02 /* (Re)Negotiate wide options */
! 109: u_char period; /* Period suggestion */
! 110: u_char offset; /* Offset suggestion */
! 111: u_char width; /* Width suggestion */
! 112: };
! 113:
! 114: struct spc_softc {
! 115: struct device sc_dev;
! 116:
! 117: volatile u_int8_t *sc_regs;
! 118:
! 119: struct scsi_link sc_link; /* prototype for subdevs */
! 120:
! 121: TAILQ_HEAD(, spc_acb) free_list, ready_list, nexus_list;
! 122: struct spc_acb *sc_nexus; /* current command */
! 123: struct spc_acb sc_acb[8];
! 124: struct spc_tinfo sc_tinfo[8];
! 125:
! 126: /* Data about the current nexus (updated for every cmd switch) */
! 127: u_char *sc_dp; /* Current data pointer */
! 128: size_t sc_dleft; /* Data bytes left to transfer */
! 129: u_char *sc_cp; /* Current command pointer */
! 130: size_t sc_cleft; /* Command bytes left to transfer */
! 131:
! 132: /* Adapter state */
! 133: u_char sc_phase; /* Current bus phase */
! 134: u_char sc_prevphase; /* Previous bus phase */
! 135: u_char sc_state; /* State applicable to the adapter */
! 136: #define SPC_INIT 0
! 137: #define SPC_IDLE 1
! 138: #define SPC_SELECTING 2 /* SCSI command is arbiting */
! 139: #define SPC_RESELECTED 3 /* Has been reselected */
! 140: #define SPC_CONNECTED 4 /* Actively using the SCSI bus */
! 141: #define SPC_DISCONNECT 5 /* MSG_DISCONNECT received */
! 142: #define SPC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */
! 143: #define SPC_CLEANING 7
! 144: u_char sc_flags;
! 145: #define SPC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */
! 146: #define SPC_ABORTING 0x02 /* Bailing out */
! 147: #define SPC_DOINGDMA 0x04 /* doing DMA */
! 148: #define SPC_INACTIVE 0x80 /* The FIFO data path is active! */
! 149: u_char sc_selid; /* Reselection ID */
! 150:
! 151: /* Message stuff */
! 152: u_char sc_msgpriq; /* Messages we want to send */
! 153: u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */
! 154: u_char sc_lastmsg; /* Message last transmitted */
! 155: u_char sc_currmsg; /* Message currently ready to transmit */
! 156: #define SEND_DEV_RESET 0x01
! 157: #define SEND_PARITY_ERROR 0x02
! 158: #define SEND_INIT_DET_ERR 0x04
! 159: #define SEND_REJECT 0x08
! 160: #define SEND_IDENTIFY 0x10
! 161: #define SEND_ABORT 0x20
! 162: #define SEND_SDTR 0x40
! 163: #define SEND_WDTR 0x80
! 164: #define SPC_MAX_MSG_LEN 8
! 165: u_char sc_omess[SPC_MAX_MSG_LEN];
! 166: u_char *sc_omp; /* Outgoing message pointer */
! 167: u_char sc_imess[SPC_MAX_MSG_LEN];
! 168: u_char *sc_imp; /* Incoming message pointer */
! 169:
! 170: /* Hardware stuff */
! 171: int sc_initiator; /* Our scsi id */
! 172: int sc_freq; /* Clock frequency in MHz */
! 173: int sc_minsync; /* Minimum sync period / 4 */
! 174: int sc_maxsync; /* Maximum sync period / 4 */
! 175: int sc_ctlflags;
! 176:
! 177: /* DMA function set from MD code */
! 178: int (*sc_dma_start)(struct spc_softc *, void *, size_t, int);
! 179: int (*sc_dma_done)(struct spc_softc *);
! 180:
! 181: /* Reset hook */
! 182: void (*sc_reset)(struct spc_softc *);
! 183: };
! 184:
! 185: #ifdef SPC_DEBUG
! 186: #define SPC_SHOWACBS 0x01
! 187: #define SPC_SHOWINTS 0x02
! 188: #define SPC_SHOWCMDS 0x04
! 189: #define SPC_SHOWMISC 0x08
! 190: #define SPC_SHOWTRACE 0x10
! 191: #define SPC_SHOWSTART 0x20
! 192: #define SPC_DOBREAK 0x40
! 193: extern int spc_debug; /* SPC_SHOWSTART|SPC_SHOWMISC|SPC_SHOWTRACE; */
! 194: #define SPC_PRINT(b, s) do {if ((spc_debug & (b)) != 0) printf s;} while (0)
! 195: #define SPC_BREAK() do {if ((spc_debug & SPC_DOBREAK) != 0) Debugger();} while (0)
! 196: #define SPC_ASSERT(x) do {if (x) {} else {printf("%s at line %d: assertion failed\n", sc->sc_dev.dv_xname, __LINE__); Debugger();}} while (0)
! 197: #else
! 198: #define SPC_PRINT(b, s)
! 199: #define SPC_BREAK()
! 200: #define SPC_ASSERT(x)
! 201: #endif
! 202:
! 203: #define SPC_ACBS(s) SPC_PRINT(SPC_SHOWACBS, s)
! 204: #define SPC_INTS(s) SPC_PRINT(SPC_SHOWINTS, s)
! 205: #define SPC_CMDS(s) SPC_PRINT(SPC_SHOWCMDS, s)
! 206: #define SPC_MISC(s) SPC_PRINT(SPC_SHOWMISC, s)
! 207: #define SPC_TRACE(s) SPC_PRINT(SPC_SHOWTRACE, s)
! 208: #define SPC_START(s) SPC_PRINT(SPC_SHOWSTART, s)
! 209:
! 210: void spc_attach(struct spc_softc *);
! 211: int spc_intr(void *);
! 212: void spc_init(struct spc_softc *);
! 213: void spc_sched(struct spc_softc *);
! 214: int spc_scsi_cmd(struct scsi_xfer *);
! 215: void spc_reset(struct spc_softc *);
! 216:
! 217: #define SPC_ADDRESS(o) (sc->sc_regs + ((o) << 1) + 1)
! 218: #define spc_read(o) *(volatile u_int8_t *)(SPC_ADDRESS(o))
! 219: #define spc_write(o, v) *(volatile u_int8_t *)(SPC_ADDRESS(o)) = (v)
! 220:
! 221: #endif /* _MB89352VAR_H_ */
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