/* $NetBSD: wd33c93var.h,v 1.15 2026/01/11 06:22:04 tsutsui Exp $ */ /* * 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. * * @(#)scsivar.h 7.1 (Berkeley) 5/8/90 */ #ifndef _SBICVAR_H_ #define _SBICVAR_H_ #include <sys/callout.h> #include <sys/malloc.h> #define SBIC_NTARG 8 #define SBIC_NLUN 8 #define SBIC_NTAGS 256 #define SBIC_MAX_MSGLEN 8 #define SBIC_ABORT_TIMEOUT 2000 /* time to wait for abort */ #define SBIC_SENSE_TIMEOUT 1000 /* time to wait for sense */ /* * ACB. Holds additional information for each SCSI command Comments: We * need a separate scsi command block because we may need to overwrite it * with a request sense command. Basically, 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,sense,status} and * occasionally xs->retries. */ struct wd33c93_acb { TAILQ_ENTRY(wd33c93_acb) chain; struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */ int flags; /* Status */ #define ACB_FREE 0x00 #define ACB_ACTIVE 0x01 #define ACB_READY 0x02 /* ACB is on ready list */ #define ACB_DONE 0x04 #define ACB_SENSE 0x08 /* ACB Requesting sense */ #define ACB_COMPLETE 0x10 /* Disconnected at end of xfer */ #define ACB_RESET 0x20 /* Require Reset */ #define ACB_ABORT 0x40 /* Require Abort */ int timeout; struct scsipi_generic cmd; /* SCSI command block */ int clen; char *daddr; /* kva for data */ size_t dleft; /* bytes remaining */ u_char tag_type; /* TAG Type (0x20-0x22, 0=No Tags) */ u_char tag_id; /* TAG id number */ }; /* * 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 wd33c93_linfo { LIST_ENTRY(wd33c93_linfo) link; time_t last_used; int lun; int used; /* # slots in use */ u_char state; #define L_STATE_IDLE 0 #define L_STATE_BUSY 1 #define L_STATE_ESTAT 2 struct wd33c93_acb *untagged; struct wd33c93_acb *queued[SBIC_NTAGS]; }; struct wd33c93_tinfo { int cmds; /* # of commands processed */ int dconns; /* # of disconnects */ u_char flags; #define T_NEED_RESET 0x01 /* Should send a BUS_DEV_RESET */ #define T_NEGOTIATE 0x02 /* (Re)Negotiate synchronous options */ #define T_BUSY 0x04 /* Target is busy */ #define T_SYNCMODE 0x08 /* SYNC mode has been negotiated */ #define T_NOSYNC 0x10 /* Force ASYNC mode */ #define T_NODISC 0x20 /* Don't allow disconnect */ #define T_TAG 0x40 /* Turn on TAG QUEUEs */ #define T_WANTSYNC 0x80 /* Negotiations should aim for sync */ u_char period; /* Period suggestion */ u_char offset; /* Offset suggestion */ struct wd33c93_linfo *lun[SBIC_NLUN]; /* LUN list for this target */ }; /* Look up a lun in a tinfo */ #define TINFO_LUN(t, l) ((t)->lun[(l)]) struct wd33c93_softc { device_t sc_dev; struct scsipi_channel sc_channel; /* proto for sub devices */ struct scsipi_adapter sc_adapter; device_t sc_child; /* attached scsibus, if any */ struct callout sc_watchdog; void *sc_driver; /* driver specific field */ int target; /* Currently active target */ int lun; /* Currently active LUN */ /* WD33c93 registers */ bus_space_tag_t sc_regt; bus_space_handle_t sc_asr_regh; bus_space_handle_t sc_data_regh; /* Data about the current nexus (updated for every cmd switch) */ void * sc_daddr; /* Current data pointer */ size_t sc_dleft; /* Data left to transfer */ ssize_t sc_tcnt; /* number of bytes transferred */ /* Lists of command blocks */ TAILQ_HEAD(acb_list, wd33c93_acb) ready_list; struct wd33c93_acb *sc_nexus; /* current command */ struct wd33c93_tinfo sc_tinfo[8]; u_short sc_state; u_short sc_status; int sc_disc; /* current # of active nexus's */ int sc_flags; /* Message stuff */ u_short sc_msgify; /* Last IDENTIFY message */ u_short sc_msgout; /* Current message out */ u_short sc_msgpriq; /* mesg_out queue (bitmap) */ u_short sc_msgoutq; /* mesg_out queue */ u_char sc_imsg[SBIC_MAX_MSGLEN]; u_char sc_omsg[SBIC_MAX_MSGLEN]; u_char sc_imsglen; u_char sc_omsglen; /* Static hardware attributes supplied by attachment */ int sc_id; /* SCSI ID for controller */ int sc_clkfreq; /* wd33c93 clk freq * 10 MHz */ uint8_t sc_dmamode; /* One of SBIC_CTL_*DMA */ /* Static hardware attributes derived by wd33c93_attach() */ int sc_chip; /* Chip variation */ int sc_rev; /* Chip revision */ int sc_cfflags; /* Copy of config flags */ int sc_maxxfer; /* Maximum transfer size */ uint8_t sc_maxoffset; /* Maximum sync offset (bytes) */ uint8_t sc_minsyncperiod; /* Minimum supported sync xfer period */ uint8_t sc_syncperiods[7]; /* Sync transfer periods (4ns units) */ uint8_t sc_fsyncperiods[3]; /* Sync transfer periods for Fast SCSI*/ int (*sc_dmasetup) (struct wd33c93_softc *, void **, size_t *, int, size_t *); int (*sc_dmago) (struct wd33c93_softc *); void (*sc_dmastop) (struct wd33c93_softc *); void (*sc_reset) (struct wd33c93_softc *); }; /* values for sc_flags */ #define SBICF_SELECTED 0x01 /* bus is in selected state. */ #define SBICF_NODMA 0x02 /* Polled transfer */ #define SBICF_INDMA 0x04 /* DMA I/O in progress */ #define SBICF_SYNCNEGO 0x08 /* Sync negotiation in progress */ #define SBICF_ABORTING 0x10 /* Aborting */ /* values for sc_state */ #define SBIC_UNINITIALIZED 0 /* Driver not initialized */ #define SBIC_IDLE 1 /* waiting for something to do */ #define SBIC_SELECTING 2 /* SCSI command is arbiting */ #define SBIC_RESELECTED 3 /* Has been reselected */ #define SBIC_IDENTIFIED 4 /* Has gotten IFY but not TAG */ #define SBIC_CONNECTED 5 /* Actively using the SCSI bus */ #define SBIC_DISCONNECT 6 /* MSG_DISCONNECT received */ #define SBIC_CMDCOMPLETE 7 /* MSG_CMDCOMPLETE received */ #define SBIC_ERROR 8 /* Error has occurred */ #define SBIC_SELTIMEOUT 9 /* Select Timeout */ #define SBIC_CLEANING 10 /* Scrubbing ACB's */ #define SBIC_BUSRESET 11 /* SCSI RST has been issued */ /* values for sc_msgout */ #define SEND_DEV_RESET 0x0001 #define SEND_PARITY_ERROR 0x0002 #define SEND_INIT_DET_ERR 0x0004 #define SEND_REJECT 0x0008 #define SEND_IDENTIFY 0x0010 #define SEND_ABORT 0x0020 #define SEND_WDTR 0x0040 #define SEND_SDTR 0x0080 #define SEND_TAG 0x0100 /* WD33c93 chipset revisions - values for sc_rev */ #define SBIC_CHIP_UNKNOWN 0 #define SBIC_CHIP_WD33C93 1 #define SBIC_CHIP_WD33C93A 2 #define SBIC_CHIP_WD33C93B 3 #define SBIC_CHIP_LIST {"UNKNOWN", "WD33C93", "WD33C93A", "WD33C93B"} /* macros for sc_cfflags */ #define CFFLAGS_NODISC(_cf, _t) ((_cf) & (1 << ( 0 + (_t)))) #define CFFLAGS_NOSYNC(_cf, _t) ((_cf) & (1 << ( 8 + (_t)))) #define CFFLAGS_NOTAGS(_cf, _t) ((_cf) & (1 << (16 + (_t)))) /* * States returned by our state machine */ #define SBIC_STATE_ERROR -1 #define SBIC_STATE_DONE 0 #define SBIC_STATE_RUNNING 1 #define SBIC_STATE_DISCONNECT 2 #define DEBUG_ACBS 0x01 #define DEBUG_INTS 0x02 #define DEBUG_CMDS 0x04 #define DEBUG_MISC 0x08 #define DEBUG_TRAC 0x10 #define DEBUG_RSEL 0x20 #define DEBUG_PHASE 0x40 #define DEBUG_DMA 0x80 #define DEBUG_CCMDS 0x100 #define DEBUG_MSGS 0x200 #define DEBUG_TAGS 0x400 #define DEBUG_SYNC 0x800 #define DEBUG_SCSIREQ 0x1000 #ifdef DEBUG extern int wd33c93_debug; #define SBIC_DEBUG(level, str) \ do { \ if (wd33c93_debug & __CONCAT(DEBUG_,level)) \ printf str; \ } while (0) #else #define SBIC_DEBUG(level, str) #endif struct buf; struct scsipi_xfer; void wd33c93_scsi_request (struct scsipi_channel *, scsipi_adapter_req_t, void *); void wd33c93_attach (struct wd33c93_softc *); int wd33c93_intr (struct wd33c93_softc *); #endif /* _SBICVAR_H_ */
