143 lines
5.2 KiB
C
143 lines
5.2 KiB
C
/* $NetBSD: siopvar_common.h,v 1.3 2000/06/12 20:13:41 bouyer Exp $ */
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/*
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* Copyright (c) 2000 Manuel Bouyer.
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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 Manuel Bouyer
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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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* 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 WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/* common struct and routines used by siop and esiop */
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#ifndef SIOP_DEFAULT_TARGET
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#define SIOP_DEFAULT_TARGET 7
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#endif
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/* tables used by SCRIPT */
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typedef struct scr_table {
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u_int32_t count;
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u_int32_t addr;
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} scr_table_t ;
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/* Number of scatter/gather entries */
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#define SIOP_NSG (MAXPHYS/NBPG + 1)
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/*
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* This structure interfaces the SCRIPT with the driver; it describes a full
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* transfer. It lives in the same chunk of DMA-safe memory as the script.
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*/
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struct siop_xfer {
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u_int8_t msg_out[8]; /* 0 */
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u_int8_t msg_in[8]; /* 8 */
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int status; /* 16 */
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u_int32_t pad1; /* 20 */
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u_int32_t id; /* 24 */
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u_int32_t pad2; /* 28 */
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scr_table_t t_msgin; /* 32 */
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scr_table_t t_extmsgin; /* 40 */
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scr_table_t t_extmsgdata; /* 48 */
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scr_table_t t_msgtag; /* 56 */
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scr_table_t t_msgout; /* 64 */
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scr_table_t cmd; /* 72 */
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scr_table_t t_status; /* 80 */
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scr_table_t data[SIOP_NSG]; /* 88 */
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} __attribute__((__packed__));
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/*
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* This decribes a command handled by the SCSI controller
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* These are chained in either a free list or a active list
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* We have one queue per target
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*/
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struct siop_cmd {
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TAILQ_ENTRY (siop_cmd) next;
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struct siop_target *siop_target; /* pointer to our target def */
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struct scsipi_xfer *xs; /* xfer from the upper level */
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struct siop_xfer *siop_table; /* tables dealing with this xfer */
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struct siop_cbd *siop_cbdp; /* pointer to our siop_cbd */
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bus_addr_t dsa; /* DSA value to load */
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bus_dmamap_t dmamap_cmd;
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bus_dmamap_t dmamap_data;
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struct scsipi_sense rs_cmd; /* request sense command buffer */
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int status;
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int flags;
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};
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/* command block descriptors: an array of siop_cmd + an array of siop_xfer */
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struct siop_cbd {
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TAILQ_ENTRY (siop_cbd) next;
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struct siop_cmd *cmds;
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struct siop_xfer *xfers;
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bus_dmamap_t xferdma; /* DMA map for this block of xfers */
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};
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/* status defs */
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#define CMDST_FREE 0 /* cmd slot is free */
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#define CMDST_READY 1 /* cmd slot is waiting for processing */
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#define CMDST_ACTIVE 2 /* cmd slot is being processed */
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#define CMDST_SENSE 3 /* cmd slot is being requesting sense */
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#define CMDST_SENSE_ACTIVE 4 /* request sense active */
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#define CMDST_SENSE_DONE 5 /* request sense done */
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#define CMDST_DONE 6 /* cmd slot has been processed */
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/* flags defs */
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#define CMDFL_TIMEOUT 0x0001 /* cmd timed out */
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/* per-target struct */
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struct siop_target {
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int status; /* target status, see below */
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int flags; /* target flags, see below */
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u_int32_t id; /* for SELECT FROM */
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struct cmd_list active_list[8]; /* per-lun active cmds */
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struct siop_softc *siop_sc; /* points back to our adapter */
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};
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/* target status */
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#define TARST_PROBING 0 /* target is being probed */
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#define TARST_ASYNC 1 /* target needs sync/wide negotiation */
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#define TARST_WIDE_NEG 2 /* target is doing wide negotiation */
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#define TARST_SYNC_NEG 3 /* target is doing sync negotiation */
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#define TARST_OK 4 /* sync/wide agreement is valid */
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/* target flags */
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#define TARF_SYNC 0x00 /* target is sync */
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#define TARF_WIDE 0x01 /* target is wide */
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void siop_common_reset __P((struct siop_softc *));
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int siop_modechange __P((struct siop_softc *));
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int siop_wdtr_neg __P((struct siop_cmd *siop_cmd));
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int siop_sdtr_neg __P((struct siop_cmd *siop_cmd));
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/* actions to take at return of siop_wdtr_neg() and siop_sdtr_neg() */
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#define SIOP_NEG_NOP 0x0
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#define SIOP_NEG_MSGOUT 0x1
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#define SIOP_NEG_ACK 0x2
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void siop_minphys __P((struct buf *));
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int siop_ioctl __P((struct scsipi_link *, u_long,
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caddr_t, int, struct proc *));
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void siop_sdp __P((struct siop_cmd *));
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void siop_clearfifo __P((struct siop_softc *));
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