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543 lines
14 KiB
C
543 lines
14 KiB
C
/* $NetBSD$ */
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/*
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* [NetBSD for NEC PC98 series]
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* Copyright (c) 1994, 1995, 1996 NetBSD/pc98 porting staff.
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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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* Copyright (c) 1994, 1995, 1996 Naofumi HONDA. All rights reserved.
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*/
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#define BS_INLINE inline
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/**************************************************
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* CONTROL FLAGS (cf_flags)
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*************************************************/
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#define BSC_FASTACK 0x01
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#define BSC_SMITSAT_DISEN 0x02
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#define BSC_CHIP_CLOCK(dvcfg) (((dvcfg) >> 4) & 0x03)
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#define BS_SCSI_SYNC DVF_SCSI_SYNC
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#define BS_SCSI_DISC DVF_SCSI_DISC
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#define BS_SCSI_WAIT DVF_SCSI_WAIT
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#define BS_SCSI_LINK DVF_SCSI_LINK
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#define BS_SCSI_QTAG DVF_SCSI_QTAG
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#define BS_SCSI_NOSAT DVF_SCSI_SP0
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#define BS_SCSI_NOPARITY DVF_SCSI_NOPARITY
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#define BS_SCSI_SAVESP DVF_SCSI_SAVESP
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#define BS_SCSI_NOSMIT DVF_SCSI_SP1
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#define BS_SCSI_PERIOD(XXX) DVF_SCSI_PERIOD(XXX)
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#define BS_SCSI_OFFSET(XXX) DVF_SCSI_OFFSET(XXX)
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#define BS_SCSI_SYNCMASK DVF_SCSI_SYNCMASK
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#define BS_SCSI_BITS DVF_SCSI_BITS
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#define BS_SCSI_DEFCFG (BS_SCSI_NOSAT | DVF_SCSI_DEFCFG)
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#define BS_SCSI_POSITIVE (BS_SCSI_SYNC | BS_SCSI_DISC | BS_SCSI_LINK)
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#define BS_SCSI_NEGATIVE (BS_SCSI_WAIT | BS_SCSI_NOSAT | BS_SCSI_NOPARITY |\
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BS_SCSI_SAVESP | BS_SCSI_NOSMIT)
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/*******************************************
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* CONFIG SECTION
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******************************************/
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/* Enable timeout watch dog */
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#define BS_DEFAULT_TIMEOUT_SECOND 16 /* default 16 sec */
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#define BS_SYNC_TIMEOUT 16
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#define BS_STARTUP_TIMEOUT 60
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#define BS_MOTOR_TIMEOUT 120
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#define BS_TIMEOUT_CHECK_INTERVAL 4 /* check each 4 sec */
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/* If you use memory over 16M */
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#ifdef SCSI_BOUNCE_SIZE
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#define BS_BOUNCE_SIZE SCSI_BOUNCE_SIZE
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#else /* !SCSI_BOUNCE_SIZE */
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#define BS_BOUNCE_SIZE 0
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#endif /* !SCSI_BOUNCE_SIZE */
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/* debug */
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#define BS_STATICS 1
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#define BS_DIAG 1
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#define BS_DEBUG_ROUTINE 1
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#define BS_DEBUG 1
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/* #define SHOW_PORT 1 */
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/**************************************************
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* PARAMETER
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**************************************************/
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#define NTARGETS 8
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#define RETRIES 4 /* number of retries before giving up */
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#define HARDRETRIES 3
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#define XSMAX 4
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#define BSDMABUFSIZ 0x10000
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#define BS_MAX_CCB (XSMAX * (NTARGETS - 1))
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#define BSCMDSTART 0
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#define BSCMDRESTART 0x01
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#define BSCMDFORCE 0x02
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#define BS_TIMEOUT_INTERVAL (hz * BS_TIMEOUT_CHECK_INTERVAL)
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/**************************************************
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* SCSI PHASE
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**************************************************/
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enum scsi_phase {
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FREE = 0,
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HOSTQUEUE,
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DISCONNECTED,
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IOCOMPLETED,
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ATTENTIONASSERT,
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DISCONNECTASSERT,
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SELECTASSERT,
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SELECTED,
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RESELECTED,
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MSGIN,
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MSGOUT,
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STATUSIN,
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CMDPHASE,
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DATAPHASE,
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SATSEL,
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SATRESEL,
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SATSDP,
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SATCOMPSEQ,
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UNDEF,
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};
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/**************************************************
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* SCSI PHASE CONTROL MACRO
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**************************************************/
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#define BS_HOST_START \
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{ \
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bsc->sc_nexus = ti; \
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}
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#define BS_HOST_TERMINATE \
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{ \
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bsc->sc_selwait = NULL; \
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bsc->sc_nexus = NULL; \
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}
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#define BS_SELECTION_START \
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{ \
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bsc->sc_selwait = ti; \
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}
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#define BS_SELECTION_TERMINATE \
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{ \
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bsc->sc_selwait = NULL; \
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}
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#define BS_SETUP_PHASE(PHASE) \
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{ \
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ti->ti_ophase = ti->ti_phase; \
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ti->ti_phase = (PHASE); \
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}
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#define BS_SETUP_MSGPHASE(PHASE) \
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{ \
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bsc->sc_msgphase = (PHASE); \
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}
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#define BS_SETUP_SYNCSTATE(STATE) \
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{ \
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ti->ti_syncnow.state = (STATE); \
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}
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#define BS_SETUP_TARGSTATE(STATE) \
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{ \
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ti->ti_state = (STATE); \
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}
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#define BS_LOAD_SDP \
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{ \
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bsc->sc_p.data = ti->ti_scsp.data; \
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bsc->sc_p.datalen = ti->ti_scsp.datalen; \
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bsc->sc_p.seglen = ti->ti_scsp.seglen; \
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}
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#define BS_RESTORE_SDP \
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{ \
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bsc->sc_p = ti->ti_scsp; \
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}
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#define BS_SAVE_SDP \
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{ \
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ti->ti_scsp = bsc->sc_p; \
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}
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/**************************************************
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* STRUCTURES
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**************************************************/
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struct msgbase {
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#define MAXMSGLEN 8
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u_int8_t msg[MAXMSGLEN];
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u_int msglen;
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u_int flag;
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};
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struct syncdata {
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u_int8_t period;
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u_int8_t offset;
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#define BS_SYNCMSG_NULL 0x00
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#define BS_SYNCMSG_ASSERT 0x01
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#define BS_SYNCMSG_REJECT 0x02
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#define BS_SYNCMSG_ACCEPT 0x03
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#define BS_SYNCMSG_REQUESTED 0x04
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u_int state;
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};
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struct sc_p {
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u_int8_t *data;
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int datalen;
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u_int8_t *segaddr;
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int seglen;
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u_int8_t *bufp;
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};
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/* targ_info error flags */
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#define BSDMAABNORMAL 0x01
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#define BSCMDABNORMAL 0x02
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#define BSPARITY 0x04
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#define BSSTATUSERROR 0x08
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#define BSTIMEOUT 0x10
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#define BSREQSENSE 0x20
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#define BSSELTIMEOUT 0x40
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#define BSFATALIO 0x80
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#define BSMSGERROR 0x100
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#define BSTRYRECOV 0x200
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#define BSABNORMAL 0x400
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#define BSTARGETBUSY 0x800
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#define BSERRORBITS "\020\014busy\013abnormal\012retry\011msgerr\010fatal\007seltimeout\006sense\005timeout\004statuserr\003parity\002cmderr\001dmaerr"
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/* ccb & targ_info flags & cmd flags*/
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#define BSREAD 0x0001
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#define BSSAT 0x0002
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#define BSLINK 0x0004
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#define BSERROROK 0x0008
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#define BSSMIT 0x0010
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#define BSDISC 0x1000
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#define BSFORCEIOPOLL 0x2000
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#define BSCASTAT 0x01000000
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#define BSSENSECCB 0x02000000
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#define BSQUEUED 0x04000000
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#define BSALTBUF 0x08000000
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#define BSITSDONE 0x10000000
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#define BSNEXUS 0x20000000
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#define BSCFLAGSMASK (0xffff)
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struct ccb {
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TAILQ_ENTRY(ccb) ccb_chain;
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struct scsi_xfer *xs; /* upper drivers info */
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u_int lun; /* lun */
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u_int flags; /* control flags */
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int rcnt; /* retry counter of this ccb */
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u_int error; /* recorded error */
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/*****************************************
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* scsi cmd & data
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*****************************************/
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u_int8_t *cmd; /* scsi cmd */
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int cmdlen;
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u_int8_t *data; /* scsi data */
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int datalen;
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u_int8_t msgout[MAXMSGLEN]; /* scsi msgout */
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u_int msgoutlen;
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/*****************************************
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* timeout counter
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*****************************************/
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int tc;
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int tcmax;
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};
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GENERIC_CCB_ASSERT(bs, ccb)
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/* target info */
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struct targ_info {
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TAILQ_ENTRY(targ_info) ti_tchain; /* targ_info link */
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TAILQ_ENTRY(targ_info) ti_wchain; /* wait link */
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struct bs_softc *ti_bsc; /* our controller */
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u_int ti_id; /* scsi id */
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u_int ti_lun; /* current lun */
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struct ccbtab ti_ctab, ti_bctab; /* ccb */
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#define BS_TARG_NULL 0
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#define BS_TARG_CTRL 1
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#define BS_TARG_START 2
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#define BS_TARG_SYNCH 3
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#define BS_TARG_RDY 4
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int ti_state; /* target state */
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u_int ti_cfgflags; /* target cfg flags */
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u_int ti_flags; /* flags */
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u_int ti_mflags; /* flags masks */
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u_int ti_error; /* error flags */
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u_int ti_herrcnt; /* hardware err retry counter */
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/*****************************************
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* scsi phase data
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*****************************************/
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struct sc_p ti_scsp; /* saved scsi data pointer */
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enum scsi_phase ti_phase; /* scsi phase */
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enum scsi_phase ti_ophase; /* previous scsi phase */
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u_int8_t ti_status; /* status in */
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u_int8_t ti_msgin[MAXMSGLEN]; /* msgin buffer */
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int ti_msginptr;
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u_int8_t ti_msgout; /* last msgout byte */
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u_int8_t ti_emsgout; /* last msgout byte */
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u_int ti_omsgoutlen; /* for retry msgout */
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struct syncdata ti_syncmax; /* synch data (scsi) */
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struct syncdata ti_syncnow;
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u_int8_t ti_sync; /* synch val (chip) */
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/*****************************************
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* bounce buffer & smit data pointer
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*****************************************/
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u_int8_t *bounce_phys;
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u_int8_t *bounce_addr;
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u_int bounce_size;
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u_int8_t *sm_vaddr;
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/*****************************************
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* target inq data
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*****************************************/
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u_int8_t targ_type;
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u_int8_t targ_support;
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/*****************************************
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* generic scsi cmd buffer for this target
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*****************************************/
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u_int8_t scsi_cmd[12];
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struct scsi_sense_data sense;
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};
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TAILQ_HEAD(titab, targ_info);
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struct bshw;
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struct bs_softc {
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/*****************************************
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* OS depend header
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*****************************************/
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OS_DEPEND_DEVICE_HEADER
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OS_DEPEND_SCSI_HEADER
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OS_DEPEND_MISC_HEADER
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/*****************************************
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* target link
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*****************************************/
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struct targ_info *sc_ti[NTARGETS];
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u_int sc_openf;
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struct titab sc_sttab;
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struct titab sc_titab;
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/*****************************************
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* current scsi phase
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*****************************************/
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struct targ_info *sc_nexus; /* current active nexus */
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enum scsi_phase sc_msgphase; /* scsi phase pointed by msg */
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struct targ_info *sc_selwait; /* selection assert */
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u_int sc_dtgnum; /* disconnected target */
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/*****************************************
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* current scsi data pointer
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*****************************************/
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struct sc_p sc_p; /* scsi data pointer */
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int sc_dmadir; /* dma direction */
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int sm_tdatalen; /* smit data transfer bytes */
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/*****************************************
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* parameter
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*****************************************/
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u_int sc_retry; /* max retry count */
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#define BSDMATRANSFER 0x01
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#define BSDMASTART 0x02
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#define BSSMITSTART 0x04
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#define BSUNDERRESET 0x08
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#define BSRESET 0x10
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#define BSSTARTTIMEOUT 0x20
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#define BSPOLLDONE 0x100
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#define BSJOBDONE 0x200
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#define BSBSMODE 0x400
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#define BSINACTIVE 0x800
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volatile int sc_flags; /* host flags */
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#define BSC_NULL 0
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#define BSC_BOOTUP 1
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#define BSC_TARG_CHECK 2
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#define BSC_RDY 3
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int sc_hstate; /* host state */
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/*****************************************
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* polling misc
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*****************************************/
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u_int sc_wc; /* weight count */
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int sc_poll;
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struct ccb *sc_outccb;
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/*****************************************
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* wd33c93 chip depend section
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*****************************************/
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u_int sc_cfgflags; /* hardware cfg flags */
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struct bshw *sc_hw; /* hw selection */
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u_int8_t *sm_vaddr; /* smit buffer */
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u_int sc_RSTdelay;
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int sc_hwlock; /* hardware lock count */
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int sc_iobase; /* iobase for FreeBSD */
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u_int32_t sc_irqmasks; /* irq */
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u_int sc_dmachan; /* dma channel */
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u_int8_t sc_busstat; /* scsi bus status register */
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u_int8_t sc_hostid; /* host scsi id */
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u_int8_t sc_cspeed; /* chip clock rate */
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u_int8_t sc_membank; /* memory back (NEC) register */
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/*****************************************
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* our name
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*****************************************/
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#define BS_DVNAME_LEN 16
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u_char sc_dvname[BS_DVNAME_LEN];
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};
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/*************************************************
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* debug
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*************************************************/
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#ifdef BS_STATICS
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struct bs_statics {
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u_int select;
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u_int select_miss_in_assert;
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u_int select_miss_by_reselect;
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u_int select_miss;
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u_int select_win;
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u_int selected;
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u_int disconnected;
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u_int reselect;
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};
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extern struct bs_statics bs_statics[NTARGETS];
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extern u_int bs_linkcmd_count[];
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extern u_int bs_bounce_used[];
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#endif /* BS_STATICS */
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#ifdef BS_DEBUG_ROUTINE
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#ifndef DDB
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#define Debugger() panic("should call debugger here (bs.c)")
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#endif /* DDB */
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#ifdef BS_DEBUG
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extern int bs_debug_flag;
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#endif /* BS_DEBUG */
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#endif /* BS_DEBUG_ROUTINE */
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/*************************************************
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* Function declare
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*************************************************/
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int bs_scsi_cmd_internal __P((struct ccb *, u_int));
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struct ccb *bscmddone __P((struct targ_info *));
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int bscmdstart __P((struct targ_info *, int));
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int bs_scsi_cmd_poll __P((struct targ_info *, struct ccb *));
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int bs_sequencer __P((struct bs_softc *));
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void bs_poll_timeout __P((struct bs_softc *, char *));
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/*************************************************
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* XXX
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*************************************************/
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/* misc error */
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#define NOTARGET -2
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#define HASERROR -1
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/* XXX: use scsi_message.h */
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/* status */
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#define ST_GOOD 0x00
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#define ST_CHKCOND 0x02
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#define ST_MET 0x04
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#define ST_BUSY 0x08
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#define ST_INTERGOOD 0x10
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#define ST_INTERMET 0x14
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#define ST_CONFLICT 0x18
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#define ST_QUEFULL 0x28
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#define ST_UNK 0xff
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/* message */
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#define MSG_COMP 0x00
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#define MSG_EXTEND 0x01
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#define MKMSG_EXTEND(XLEN, XCODE) ((((u_int)(XLEN)) << NBBY) | ((u_int)(XCODE)))
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#define MSG_EXTEND_MDPCODE 0x00
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#define MSG_EXTEND_MDPLEN 0x05
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#define MSG_EXTEND_SYNCHCODE 0x01
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#define MSG_EXTEND_SYNCHLEN 0x03
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#define MSG_EXTEND_WIDECODE 0x03
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#define MSG_EXTEND_WIDELEN 0x02
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#define MSG_SAVESP 0x02
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#define MSG_RESTORESP 0x03
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#define MSG_DISCON 0x04
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#define MSG_I_ERROR 0x05
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#define MSG_ABORT 0x06
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#define MSG_REJECT 0x07
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#define MSG_NOOP 0x08
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#define MSG_PARITY 0x09
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#define MSG_LCOMP 0x0a
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#define MSG_LCOMP_F 0x0b
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#define MSG_RESET 0x0c
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