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/* $OpenBSD: osiopvar.h,v 1.6 2003/06/02 23:28:02 millert Exp $ */
/* $NetBSD: osiopvar.h,v 1.3 2002/05/14 02:58:35 matt Exp $ */
/*
* Copyright (c) 2001 Izumi Tsutsui. 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. 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.
*/
/*
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Van Jacobson of Lawrence Berkeley Laboratory.
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)siopvar.h 7.1 (Berkeley) 5/8/90
*/
#define osiop_read_1(sc, reg) \
bus_space_read_1((sc)->sc_bst, (sc)->sc_reg, reg)
#define osiop_write_1(sc, reg, val) \
bus_space_write_1((sc)->sc_bst, (sc)->sc_reg, reg, val)
#define osiop_read_4(sc, reg) \
bus_space_read_4((sc)->sc_bst, (sc)->sc_reg, reg)
#define osiop_write_4(sc, reg, val) \
bus_space_write_4((sc)->sc_bst, (sc)->sc_reg, reg, val)
/*
* The largest single request will be MAXPHYS bytes which will require
* at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of
* the buffer pages are physically contiguous (MAXPHYS/NBPG) and the
* buffer is not page aligned (+1).
*/
/* XXX This should be (MAXPHYS / NBPG + 1), but hardcoded in script */
#define OSIOP_NSG (16 + 1)
#if MAXPHYS > (PAGE_SIZE * (OSIOP_NSG - 1))
#define OSIOP_MAX_XFER (PAGE_SIZE * (OSIOP_NSG - 1))
#else
#define OSIOP_MAX_XFER MAXPHYS
#endif
#define OSIOP_NTGT 8
#define OSIOP_NACB 32 /* XXX (PAGE_SIZE / sizeof(osiop_ds)) is better? */
/*
* Data Structure for SCRIPTS program
*/
typedef struct buf_table {
u_int32_t count;
u_int32_t addr;
} buf_table_t;
struct osiop_ds {
u_int32_t scsi_addr; /* SCSI ID & sync */
u_int32_t pad1;
buf_table_t id; /* Identify message */
buf_table_t cmd; /* SCSI command */
buf_table_t status; /* Status */
buf_table_t msg; /* Message */
buf_table_t msgin; /* Message in */
buf_table_t extmsg; /* Extended message in */
buf_table_t synmsg; /* Sync transfer request */
buf_table_t data[OSIOP_NSG]; /* DMA S/G buffers */
u_int8_t msgout[8];
u_int8_t msgbuf[8];
u_int8_t stat[8];
struct scsi_generic scsi_cmd; /* DMA'able copy of xs->cmd */
} __attribute__((__packed__));
/* status can hold the SCSI_* status values, and 2 additionnal values: */
#define SCSI_OSIOP_NOCHECK 0xfe /* don't check the scsi status */
#define SCSI_OSIOP_NOSTATUS 0xff /* device didn't report status */
#define MSG_INVALID 0xff /* dummy value for message buffer */
#define OSIOP_DSOFF(x) offsetof(struct osiop_ds, x)
#define OSIOP_DSIDOFF OSIOP_DSOFF(msgout[0])
#define OSIOP_DSMSGOFF OSIOP_DSOFF(msgbuf[0])
#define OSIOP_DSMSGINOFF OSIOP_DSOFF(msgbuf[1])
#define OSIOP_DSEXTMSGOFF OSIOP_DSOFF(msgbuf[2])
#define OSIOP_DSSYNMSGOFF OSIOP_DSOFF(msgbuf[3])
#define OSIOP_DSSTATOFF OSIOP_DSOFF(stat[0])
#define OSIOP_DSCMDOFF OSIOP_DSOFF(scsi_cmd)
/*
* ACB. Holds additional information for each SCSI command Comments:
* Basicly, we refrain from fiddling with the scsi_xfer struct
* (except do the expected updating of return values).
* We'll generally update: xs->{flags,resid,error,status} and
* occasionally xs->retries.
*/
struct osiop_acb {
TAILQ_ENTRY(osiop_acb) chain;
struct scsi_xfer *xs; /* SCSI xfer ctrl block from upper layer */
struct osiop_softc *sc; /* points back to our adapter */
bus_dmamap_t datadma; /* DMA map for data transfer */
struct osiop_ds *ds; /* data structure for this acb */
bus_size_t dsoffset; /* offset of data structure for this acb */
int xsflags; /* copy of xs->flags */
int datalen;
void *data; /* transfer data buffer ptr */
bus_addr_t curaddr; /* current transfer data buffer */
bus_size_t curlen; /* current transfer data length */
int status; /* status of this acb */
/* status defs */
#define ACB_S_FREE 0 /* cmd slot is free */
#define ACB_S_READY 1 /* cmd slot is waiting for processing */
#define ACB_S_ACTIVE 2 /* cmd slot is being processed */
#define ACB_S_DONE 3 /* cmd slot has been processed */
int flags; /* cmd slot flags */
#define ACB_F_TIMEOUT 0x01 /* command timeout */
#define ACB_F_AUTOSENSE 0x02 /* request sense due to SCSI_CHECK */
u_int8_t intstat; /* buffer to save sc_flags on disconnect */
};
/*
* Some info about each (possible) target on the SCSI bus. This should
* probably have been a "per target+lunit" structure, but we'll leave it at
* this for now. Is there a way to reliably hook it up to sc->fordriver??
*/
struct osiop_tinfo {
int cmds; /* number of commands processed */
int senses; /* number of sense requests */
int dconns; /* number of disconnects */
int touts; /* number of timeouts */
int perrs; /* number of parity errors */
int lubusy; /* What local units/subr. are busy? */
int period; /* Period suggestion */
int offset; /* Offset suggestion */
int flags; /* misc flags per each target */
#define TI_NOSYNC 0x01 /* disable sync xfer on this target */
#define TI_NODISC 0x02 /* disable disconnect on this target */
int state; /* negotiation state */
u_int8_t sxfer; /* value for SXFER reg */
u_int8_t sbcl; /* value for SBCL reg */
};
struct osiop_softc {
struct device sc_dev;
bus_space_tag_t sc_bst; /* bus space tag */
bus_space_handle_t sc_reg; /* register I/O handle */
bus_dma_tag_t sc_dmat; /* bus dma tag */
bus_dmamap_t sc_scrdma; /* script dma map */
bus_dmamap_t sc_dsdma; /* script data dma map */
u_int32_t *sc_script; /* ptr to script memory */
struct osiop_ds *sc_ds; /* ptr to data structure memory */
int sc_id; /* adapter SCSI id */
int sc_active; /* number of active I/O's */
struct osiop_acb *sc_nexus; /* current command */
struct osiop_acb *sc_acb; /* the real command blocks */
/* Lists of command blocks */
TAILQ_HEAD(acb_list, osiop_acb) free_list,
ready_list,
nexus_list;
struct scsi_link sc_link;
struct osiop_tinfo sc_tinfo[OSIOP_NTGT];
int sc_clock_freq;
int sc_tcp[4];
int sc_flags;
#define OSIOP_INTSOFF 0x80 /* Interrupts turned off */
#define OSIOP_INTDEFER 0x40 /* MD interrupt has been deferred */
#define OSIOP_NODMA 0x02 /* No DMA transfer */
#define OSIOP_ALIVE 0x01 /* controller initialized */
int sc_cfflags; /* copy of config flags */
int sc_minsync;
u_int8_t sc_dstat;
u_int8_t sc_sstat0;
u_int8_t sc_sstat1;
u_int8_t sc_istat;
u_int8_t sc_dcntl;
u_int8_t sc_ctest7;
u_int8_t sc_dmode;
u_int8_t sc_sien;
u_int8_t sc_dien;
};
/* negotiation states */
#define NEG_INIT 0 /* Initial negotiate state */
#define NEG_SYNC NEG_INIT /* Negotiate synch transfers */
#define NEG_WAITS 1 /* Waiting for synch negoation response */
#define NEG_DONE 2 /* Wide and/or sync negotation done */
void osiop_attach(struct osiop_softc *);
void osiop_intr(struct osiop_softc *);
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