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/* $OpenBSD: siopvar_common.h,v 1.1 2001/02/15 04:07:59 krw Exp $ */
/* $NetBSD: siopvar_common.h,v 1.10 2001/01/26 21:58:56 bouyer Exp $ */
/*
* Copyright (c) 2000 Manuel Bouyer.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Manuel Bouyer
* 4. 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.
*
*/
/* common struct and routines used by siop and esiop */
#ifndef SIOP_DEFAULT_TARGET
#define SIOP_DEFAULT_TARGET 7
#endif
/* tables used by SCRIPT */
typedef struct scr_table {
u_int32_t count;
u_int32_t addr;
} scr_table_t ;
/* Number of scatter/gather entries */
#define SIOP_NSG (MAXPHYS/NBPG + 1) /* XXX NBPG */
/* Number of tag */
#define SIOP_NTAG 16
/*
* This structure interfaces the SCRIPT with the driver; it describes a full
* transfer.
*/
struct siop_xfer_common {
u_int8_t msg_out[8]; /* 0 */
u_int8_t msg_in[8]; /* 8 */
u_int32_t status; /* 16 */
u_int32_t pad1; /* 20 */
u_int32_t id; /* 24 */
u_int32_t pad2; /* 28 */
scr_table_t t_msgin; /* 32 */
scr_table_t t_extmsgin; /* 40 */
scr_table_t t_extmsgdata; /* 48 */
scr_table_t t_msgout; /* 56 */
scr_table_t cmd; /* 64 */
scr_table_t t_status; /* 72 */
scr_table_t data[SIOP_NSG]; /* 80 */
} __attribute__((__packed__));
/* status can hold the SCSI_* status values, and 2 additionnal values: */
#define SCSI_SIOP_NOCHECK 0xfe /* don't check the scsi status */
#define SCSI_SIOP_NOSTATUS 0xff /* device didn't report status */
/* xfer description of the script: tables and reselect script */
struct siop_xfer {
struct siop_xfer_common tables;
/* u_int32_t resel[sizeof(load_dsa) / sizeof(load_dsa[0])]; */
u_int32_t resel[25];
} __attribute__((__packed__));
/*
* This decribes a command handled by the SCSI controller
* These are chained in either a free list or a active list
* We have one queue per target
*/
struct siop_cmd {
TAILQ_ENTRY (siop_cmd) next;
struct siop_softc *siop_sc; /* points back to our adapter */
struct siop_target *siop_target; /* pointer to our target def */
struct scsi_xfer *xs; /* xfer from the upper level */
struct siop_xfer *siop_xfer; /* tables dealing with this xfer */
#define siop_tables siop_xfer->tables
struct siop_cbd *siop_cbdp; /* pointer to our siop_cbd */
bus_addr_t dsa; /* DSA value to load */
bus_dmamap_t dmamap_cmd;
bus_dmamap_t dmamap_data;
struct scsi_sense rs_cmd; /* request sense command buffer */
int status;
int flags;
int reselslot; /* the reselect slot used */
int tag; /* tag used for tagged command queuing */
};
/* command block descriptors: an array of siop_cmd + an array of siop_xfer */
struct siop_cbd {
TAILQ_ENTRY (siop_cbd) next;
struct siop_cmd *cmds;
struct siop_xfer *xfers;
bus_dmamap_t xferdma; /* DMA map for this block of xfers */
};
/* status defs */
#define CMDST_FREE 0 /* cmd slot is free */
#define CMDST_READY 1 /* cmd slot is waiting for processing */
#define CMDST_ACTIVE 2 /* cmd slot is being processed */
#define CMDST_SENSE 3 /* cmd slot is being requesting sense */
#define CMDST_SENSE_ACTIVE 4 /* request sense active */
#define CMDST_SENSE_DONE 5 /* request sense done */
#define CMDST_DONE 6 /* cmd slot has been processed */
/* flags defs */
#define CMDFL_TIMEOUT 0x0001 /* cmd timed out */
#define CMDFL_TAG 0x0002 /* tagged cmd */
/* per-tag struct */
struct siop_tag {
struct siop_cmd *active; /* active command */
u_int reseloff; /* XXX */
};
/* per lun struct */
struct siop_lun {
struct siop_tag siop_tag[SIOP_NTAG]; /* tag array */
int lun_flags; /* per-lun flags, see below */
u_int reseloff; /* XXX */
};
#define SIOP_LUNF_FULL 0x01 /* queue full message */
/* per-target struct */
struct siop_target {
int status; /* target status, see below */
int flags; /* target flags, see below */
u_int32_t id; /* for SELECT FROM */
struct siop_lun *siop_lun[8]; /* per-lun state */
u_int reseloff; /* XXX */
struct siop_lunsw *lunsw; /* XXX */
};
/* target status */
#define TARST_PROBING 0 /* target is being probed */
#define TARST_ASYNC 1 /* target needs sync/wide negotiation */
#define TARST_WIDE_NEG 2 /* target is doing wide negotiation */
#define TARST_SYNC_NEG 3 /* target is doing sync negotiation */
#define TARST_OK 4 /* sync/wide agreement is valid */
/* target flags */
#define TARF_SYNC 0x01 /* target can do sync */
#define TARF_WIDE 0x02 /* target can do wide */
#define TARF_TAG 0x04 /* target can do tags */
#define TARF_ISWIDE 0x08 /* target is wide */
struct siop_lunsw {
TAILQ_ENTRY (siop_lunsw) next;
u_int32_t lunsw_off; /* offset of this lun sw, from sc_scriptaddr*/
u_int32_t lunsw_size; /* size of this lun sw */
};
static __inline__ void siop_table_sync __P((struct siop_cmd *, int));
static __inline__ void
siop_table_sync(siop_cmd, ops)
struct siop_cmd *siop_cmd;
int ops;
{
struct siop_softc *sc = siop_cmd->siop_sc;
bus_dmamap_sync(sc->sc_dmat, siop_cmd->siop_cbdp->xferdma, ops);
}
void siop_common_reset __P((struct siop_softc *));
void siop_setuptables __P((struct siop_cmd *));
int siop_modechange __P((struct siop_softc *));
int siop_wdtr_neg __P((struct siop_cmd *));
int siop_sdtr_neg __P((struct siop_cmd *));
void siop_sdtr_msg __P((struct siop_cmd *, int, int, int));
void siop_wdtr_msg __P((struct siop_cmd *, int, int));
/* actions to take at return of siop_wdtr_neg() and siop_sdtr_neg() */
#define SIOP_NEG_NOP 0x0
#define SIOP_NEG_MSGOUT 0x1
#define SIOP_NEG_ACK 0x2
void siop_minphys __P((struct buf *));
void siop_sdp __P((struct siop_cmd *));
void siop_clearfifo __P((struct siop_softc *));
void siop_resetbus __P((struct siop_softc *));
/* XXXX should be callbacks */
void siop_add_dev __P((struct siop_softc *, int, int));
void siop_del_dev __P((struct siop_softc *, int, int));
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