215 lines
8.1 KiB
C
215 lines
8.1 KiB
C
/* $NetBSD: mb89352var.h,v 1.8 2004/09/25 12:17:30 tsutsui Exp $ */
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/* NecBSD: mb89352var.h,v 1.4 1998/03/14 07:31:22 kmatsuda Exp */
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/*-
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* Copyright (c) 1996,97,98,99 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum, Masaru Oki and Kouichi Matsuda.
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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 M. Hannum.
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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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* Copyright (c) 1994 Jarle Greipsland
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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. 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
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* [NetBSD for NEC PC-98 series]
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* Copyright (c) 1996, 1997, 1998
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* NetBSD/pc98 porting staff. All rights reserved.
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* Copyright (c) 1996, 1997, 1998
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* Kouich Matsuda. All rights reserved.
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*/
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#ifndef _MB89352VAR_H_
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#define _MB89352VAR_H_
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/*
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* ACB. Holds additional information for each SCSI command Comments: We
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* need a separate scsi command block because we may need to overwrite it
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* with a request sense command. Basicly, we refrain from fiddling with
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* the scsi_xfer struct (except do the expected updating of return values).
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* We'll generally update: xs->{flags,resid,error,sense,status} and
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* occasionally xs->retries.
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*/
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struct spc_acb {
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struct scsi_generic scsipi_cmd;
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int scsipi_cmd_length;
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u_char *data_addr; /* Saved data pointer */
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int data_length; /* Residue */
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u_char target_stat; /* SCSI status byte */
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#ifdef notdef
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struct spc_dma_seg dma[SPC_NSEG]; /* Physical addresses+len */
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#endif
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TAILQ_ENTRY(spc_acb) chain;
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struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */
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int flags;
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#define ACB_ALLOC 0x01
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#define ACB_NEXUS 0x02
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#define ACB_SENSE 0x04
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#define ACB_ABORT 0x40
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#define ACB_RESET 0x80
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int timeout;
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};
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/*
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* Some info about each (possible) target on the SCSI bus. This should
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* probably have been a "per target+lunit" structure, but we'll leave it at
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* this for now.
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*/
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struct spc_tinfo {
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int cmds; /* #commands processed */
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int dconns; /* #disconnects */
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int touts; /* #timeouts */
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int perrs; /* #parity errors */
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int senses; /* #request sense commands sent */
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ushort lubusy; /* What local units/subr. are busy? */
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u_char flags;
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#define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */
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#define DO_WIDE 0x02 /* (Re)Negotiate wide options */
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u_char period; /* Period suggestion */
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u_char offset; /* Offset suggestion */
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u_char width; /* Width suggestion */
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};
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struct spc_softc {
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struct device sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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struct scsipi_channel sc_channel; /* prototype for subdevs */
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struct scsipi_adapter sc_adapter;
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TAILQ_HEAD(, spc_acb) free_list, ready_list, nexus_list;
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struct spc_acb *sc_nexus; /* current command */
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struct spc_acb sc_acb[8];
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struct spc_tinfo sc_tinfo[8];
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/* Data about the current nexus (updated for every cmd switch) */
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u_char *sc_dp; /* Current data pointer */
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size_t sc_dleft; /* Data bytes left to transfer */
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u_char *sc_cp; /* Current command pointer */
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size_t sc_cleft; /* Command bytes left to transfer */
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/* Adapter state */
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u_char sc_phase; /* Current bus phase */
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u_char sc_prevphase; /* Previous bus phase */
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u_char sc_state; /* State applicable to the adapter */
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#define SPC_INIT 0
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#define SPC_IDLE 1
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#define SPC_SELECTING 2 /* SCSI command is arbiting */
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#define SPC_RESELECTED 3 /* Has been reselected */
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#define SPC_CONNECTED 4 /* Actively using the SCSI bus */
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#define SPC_DISCONNECT 5 /* MSG_DISCONNECT received */
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#define SPC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */
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#define SPC_CLEANING 7
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u_char sc_flags;
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#define SPC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */
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#define SPC_ABORTING 0x02 /* Bailing out */
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#define SPC_DOINGDMA 0x04 /* doing DMA */
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#define SPC_INACTIVE 0x80 /* The FIFO data path is active! */
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u_char sc_selid; /* Reselection ID */
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struct device *sc_child;/* Our child */
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/* Message stuff */
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u_char sc_msgpriq; /* Messages we want to send */
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u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */
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u_char sc_lastmsg; /* Message last transmitted */
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u_char sc_currmsg; /* Message currently ready to transmit */
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#define SEND_DEV_RESET 0x01
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#define SEND_PARITY_ERROR 0x02
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#define SEND_INIT_DET_ERR 0x04
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#define SEND_REJECT 0x08
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#define SEND_IDENTIFY 0x10
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#define SEND_ABORT 0x20
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#define SEND_SDTR 0x40
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#define SEND_WDTR 0x80
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#define SPC_MAX_MSG_LEN 8
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u_char sc_omess[SPC_MAX_MSG_LEN];
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u_char *sc_omp; /* Outgoing message pointer */
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u_char sc_imess[SPC_MAX_MSG_LEN];
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u_char *sc_imp; /* Incoming message pointer */
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/* Hardware stuff */
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int sc_initiator; /* Our scsi id */
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int sc_freq; /* Clock frequency in MHz */
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int sc_minsync; /* Minimum sync period / 4 */
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int sc_maxsync; /* Maximum sync period / 4 */
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/* DMA function set from MD code */
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void (*sc_dma_start)(struct spc_softc *, void *, size_t, int);
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void (*sc_dma_done)(struct spc_softc *);
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};
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#if SPC_DEBUG
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#define SPC_SHOWACBS 0x01
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#define SPC_SHOWINTS 0x02
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#define SPC_SHOWCMDS 0x04
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#define SPC_SHOWMISC 0x08
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#define SPC_SHOWTRACE 0x10
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#define SPC_SHOWSTART 0x20
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#define SPC_DOBREAK 0x40
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extern int spc_debug; /* SPC_SHOWSTART|SPC_SHOWMISC|SPC_SHOWTRACE; */
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#define SPC_PRINT(b, s) do {if ((spc_debug & (b)) != 0) printf s;} while (0)
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#define SPC_BREAK() do {if ((spc_debug & SPC_DOBREAK) != 0) Debugger();} while (0)
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#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)
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#else
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#define SPC_PRINT(b, s)
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#define SPC_BREAK()
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#define SPC_ASSERT(x)
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#endif
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#define SPC_ACBS(s) SPC_PRINT(SPC_SHOWACBS, s)
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#define SPC_INTS(s) SPC_PRINT(SPC_SHOWINTS, s)
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#define SPC_CMDS(s) SPC_PRINT(SPC_SHOWCMDS, s)
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#define SPC_MISC(s) SPC_PRINT(SPC_SHOWMISC, s)
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#define SPC_TRACE(s) SPC_PRINT(SPC_SHOWTRACE, s)
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#define SPC_START(s) SPC_PRINT(SPC_SHOWSTART, s)
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void spc_attach(struct spc_softc *);
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int spc_activate(struct device *, enum devact);
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int spc_detach(struct device *, int);
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int spc_intr(void *);
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int spc_find(bus_space_tag_t, bus_space_handle_t, int);
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void spc_init(struct spc_softc *, int);
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void spc_sched(struct spc_softc *);
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#endif /* _MB89352VAR_H_ */
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