/* $OpenBSD: ncr53c9xvar.h,v 1.26 2024/09/04 07:54:52 mglocker Exp $ */ /* $NetBSD: ncr53c9xvar.h,v 1.13 1998/05/26 23:17:34 thorpej Exp $ */ /*- * Copyright (c) 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Copyright (c) 1994 Peter Galbavy. 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. * * 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. */ /* Set this to 1 for normal debug, or 2 for per-target tracing. */ #if !defined(SMALL_KERNEL) #define NCR53C9X_DEBUG 1 #endif /* Wide or differential can have 16 targets */ #define NCR_NTARG 16 #define NCR_NLUN 8 #define NCR_ABORT_TIMEOUT 2000 /* time to wait for abort */ #define NCR_SENSE_TIMEOUT 1000 /* time to wait for sense */ #define FREQTOCCF(freq) (((freq + 4) / 5)) /* * NCR 53c9x variants. Note, these values are used as indexes into * a table; don't modify them unless you know what you're doing. */ #define NCR_VARIANT_ESP100 0 #define NCR_VARIANT_ESP100A 1 #define NCR_VARIANT_ESP200 2 #define NCR_VARIANT_NCR53C94 3 #define NCR_VARIANT_NCR53C96 4 #define NCR_VARIANT_ESP406 5 #define NCR_VARIANT_FAS408 6 #define NCR_VARIANT_FAS216 7 #define NCR_VARIANT_AM53C974 8 #define NCR_VARIANT_FAS366 9 #define NCR_VARIANT_MAX 10 /* * ECB. 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 ncr53c9x_ecb { TAILQ_ENTRY(ncr53c9x_ecb) chain; struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */ int flags; #define ECB_ALLOC 0x01 #define ECB_READY 0x02 #define ECB_SENSE 0x04 #define ECB_ABORT 0x40 #define ECB_RESET 0x80 #define ECB_TENTATIVE_DONE 0x100 struct { u_char msg[3]; /* Selection Id msg */ struct scsi_generic cmd; /* SCSI command block */ } cmd; char *daddr; /* Saved data pointer */ int clen; /* Size of command in cmd.cmd */ int dleft; /* Residue */ u_char stat; /* SCSI status byte */ u_char tag[2]; /* TAG bytes */ u_char pad[1]; #if NCR53C9X_DEBUG > 1 char trace[1000]; #endif }; #if NCR53C9X_DEBUG > 1 #define ECB_TRACE(ecb, msg, a, b) do { \ const char *f = "[" msg "]"; \ int n = strlen((ecb)->trace); \ if (n < (sizeof((ecb)->trace)-100)) \ snprintf((ecb)->trace + n, sizeof((ecb)->trace) - n, f, a, b); \ } while(0) #else #define ECB_TRACE(ecb, msg, a, b) #endif /* * Some info about ech (possible) target and LUN on the SCSI bus. * * SCSI I and II devices can have up to 8 LUNs, each with up to 256 * outstanding tags. SCSI III devices have 64-bit LUN identifiers * that can be sparsely allocated. * * Since SCSI II devices can have up to 8 LUNs, we use an array * of 8 pointers to ncr53c9x_linfo structures for fast lookup. * Longer LUNs need to traverse the linked list. */ struct ncr53c9x_linfo { int64_t lun; LIST_ENTRY(ncr53c9x_linfo) link; time_t last_used; unsigned char used; /* # slots in use */ unsigned char avail; /* where to start scanning */ unsigned char busy; struct ncr53c9x_ecb *untagged; struct ncr53c9x_ecb *queued[256]; }; struct ncr53c9x_tinfo { int cmds; /* # of commands processed */ int dconns; /* # of disconnects */ int touts; /* # of timeouts */ int perrs; /* # of parity errors */ int senses; /* # of request sense commands sent */ u_char flags; #define T_NEED_TO_RESET 0x01 /* Should send a BUS_DEV_RESET */ #define T_NEGOTIATE 0x02 /* (Re)Negotiate synchronous options */ #define T_BUSY 0x04 /* Target is busy, i.e. cmd in progress */ #define T_SYNCMODE 0x08 /* sync mode has been negotiated */ #define T_SYNCHOFF 0x10 /* .. */ #define T_RSELECTOFF 0x20 /* .. */ #define T_TAG 0x40 /* TAG QUEUEs are on */ #define T_WIDE 0x80 /* Negotiate wide options */ u_char period; /* Period suggestion */ u_char offset; /* Offset suggestion */ u_char cfg3; /* per target config 3 */ u_char nextag; /* Next available tag */ u_char width; /* width suggestion */ LIST_HEAD(lun_list, ncr53c9x_linfo) luns; struct ncr53c9x_linfo *lun[NCR_NLUN]; /* For speedy lookups */ }; /* Look up a lun in a tinfo */ #define TINFO_LUN(t, l) ((((l) < NCR_NLUN) && (((t)->lun[(l)]) != NULL)) ? \ ((t)->lun[(l)]) : ncr53c9x_lunsearch((t), (int64_t)(l))) /* Register a linenumber (for debugging) */ #define LOGLINE(p) #define NCR_SHOWECBS 0x01 #define NCR_SHOWINTS 0x02 #define NCR_SHOWCMDS 0x04 #define NCR_SHOWMISC 0x08 #define NCR_SHOWTRAC 0x10 #define NCR_SHOWSTART 0x20 #define NCR_SHOWPHASE 0x40 #define NCR_SHOWDMA 0x80 #define NCR_SHOWCCMDS 0x100 #define NCR_SHOWMSGS 0x200 #ifdef NCR53C9X_DEBUG extern int ncr53c9x_debug; #define NCR_ECBS(str) \ do {if (ncr53c9x_debug & NCR_SHOWECBS) printf str;} while (0) #define NCR_MISC(str) \ do {if (ncr53c9x_debug & NCR_SHOWMISC) printf str;} while (0) #define NCR_INTS(str) \ do {if (ncr53c9x_debug & NCR_SHOWINTS) printf str;} while (0) #define NCR_TRACE(str) \ do {if (ncr53c9x_debug & NCR_SHOWTRAC) printf str;} while (0) #define NCR_CMDS(str) \ do {if (ncr53c9x_debug & NCR_SHOWCMDS) printf str;} while (0) #define NCR_START(str) \ do {if (ncr53c9x_debug & NCR_SHOWSTART) printf str;}while (0) #define NCR_PHASE(str) \ do {if (ncr53c9x_debug & NCR_SHOWPHASE) printf str;}while (0) #define NCR_DMA(str) \ do {if (ncr53c9x_debug & NCR_SHOWDMA) printf str;}while (0) #define NCR_MSGS(str) \ do {if (ncr53c9x_debug & NCR_SHOWMSGS) printf str;}while (0) #else #define NCR_ECBS(str) #define NCR_MISC(str) #define NCR_INTS(str) #define NCR_TRACE(str) #define NCR_CMDS(str) #define NCR_START(str) #define NCR_PHASE(str) #define NCR_DMA(str) #define NCR_MSGS(str) #endif #define NCR_MAX_MSG_LEN 8 struct ncr53c9x_softc; /* * Function switch used as glue to MD code. */ struct ncr53c9x_glue { /* Mandatory entry points. */ u_char (*gl_read_reg)(struct ncr53c9x_softc *, int); void (*gl_write_reg)(struct ncr53c9x_softc *, int, u_char); int (*gl_dma_isintr)(struct ncr53c9x_softc *); void (*gl_dma_reset)(struct ncr53c9x_softc *); int (*gl_dma_intr)(struct ncr53c9x_softc *); int (*gl_dma_setup)(struct ncr53c9x_softc *, caddr_t *, size_t *, int, size_t *); void (*gl_dma_go)(struct ncr53c9x_softc *); void (*gl_dma_stop)(struct ncr53c9x_softc *); int (*gl_dma_isactive)(struct ncr53c9x_softc *); /* Optional entry points. */ void (*gl_clear_latched_intr)(struct ncr53c9x_softc *); }; struct ncr53c9x_softc { struct device sc_dev; /* us as a device */ struct ncr53c9x_glue *sc_glue; /* glue to MD code */ int sc_ntarg; /* number of targets */ int sc_cfflags; /* Copy of config flags */ /* register defaults */ u_char sc_cfg1; /* Config 1 */ u_char sc_cfg2; /* Config 2, not ESP100 */ u_char sc_cfg3; /* Config 3, only ESP200 */ u_char sc_cfg3_fscsi; /* Chip specific FSCSI bit */ u_char sc_cfg4; /* Config 4 */ u_char sc_cfg5; /* Config 5 */ u_char sc_ccf; /* Clock Conversion */ u_char sc_timeout; /* register copies, see espreadregs() */ u_char sc_espintr; u_char sc_espstat; u_char sc_espstep; u_char sc_espstat2; u_char sc_espfflags; /* Lists of command blocks */ TAILQ_HEAD(ecb_list, ncr53c9x_ecb) ready_list; struct ncr53c9x_ecb *sc_nexus; /* Current command */ struct ncr53c9x_tinfo sc_tinfo[NCR_NTARG]; /* Data about the current nexus (updated for every cmd switch) */ caddr_t sc_dp; /* Current data pointer */ ssize_t sc_dleft; /* Data left to transfer */ /* Adapter state */ int sc_phase; /* Copy of what bus phase we are in */ int sc_prevphase; /* Copy of what bus phase we were in */ u_char sc_state; /* State applicable to the adapter */ u_char sc_flags; /* See below */ u_char sc_selid; u_char sc_lastcmd; /* Message stuff */ u_short sc_msgify; /* IDENTIFY message associated with this nexus */ u_short sc_msgout; /* What message is on its way out? */ u_short sc_msgpriq; /* One or more messages to send (encoded) */ u_short sc_msgoutq; /* What messages have been sent so far? */ u_char *sc_omess; /* MSGOUT buffer */ caddr_t sc_omp; /* Message pointer (for multibyte messages) */ size_t sc_omlen; u_char *sc_imess; /* MSGIN buffer */ caddr_t sc_imp; /* Message pointer (for multibyte messages) */ size_t sc_imlen; caddr_t sc_cmdp; /* Command pointer (for DMAed commands) */ size_t sc_cmdlen; /* Size of command in transit */ /* Hardware attributes */ int sc_freq; /* SCSI bus frequency in MHz */ int sc_id; /* Our SCSI id */ int sc_rev; /* Chip revision */ int sc_features; /* Chip features */ int sc_minsync; /* Minimum sync period / 4 */ int sc_maxxfer; /* Maximum transfer size */ }; /* values for sc_state */ #define NCR_IDLE 1 /* waiting for something to do */ #define NCR_SELECTING 2 /* SCSI command is arbiting */ #define NCR_RESELECTED 3 /* Has been reselected */ #define NCR_IDENTIFIED 4 /* Has gotten IFY but not TAG */ #define NCR_CONNECTED 5 /* Actively using the SCSI bus */ #define NCR_DISCONNECT 6 /* MSG_DISCONNECT received */ #define NCR_CMDCOMPLETE 7 /* MSG_CMDCOMPLETE received */ #define NCR_CLEANING 8 #define NCR_SBR 9 /* Expect a SCSI RST because we commanded it */ /* values for sc_flags */ #define NCR_DROP_MSGI 0x01 /* Discard all msgs (parity err detected) */ #define NCR_ABORTING 0x02 /* Bailing out */ #define NCR_DOINGDMA 0x04 /* The FIFO data path is active! */ #define NCR_SYNCHNEGO 0x08 /* Synch negotiation in progress. */ #define NCR_ICCS 0x10 /* Expect status phase results */ #define NCR_WAITI 0x20 /* Waiting for non-DMA data to arrive */ #define NCR_ATN 0x40 /* ATN asserted */ #define NCR_EXPECT_ILLCMD 0x80 /* Expect Illegal Command Interrupt */ /* values for sc_features */ #define NCR_F_HASCFG3 0x01 /* chip has CFG3 register */ #define NCR_F_FASTSCSI 0x02 /* chip supports Fast mode */ #define NCR_F_DMASELECT 0x04 /* can do dma select */ #define NCR_F_SELATN3 0x08 /* can do selatn3 */ /* 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 /* SCSI Status codes */ #define ST_MASK 0x3e /* bit 0,6,7 is reserved */ /* phase bits */ #define IOI 0x01 #define CDI 0x02 #define MSGI 0x04 /* Information transfer phases */ #define DATA_OUT_PHASE (0) #define DATA_IN_PHASE (IOI) #define COMMAND_PHASE (CDI) #define STATUS_PHASE (CDI|IOI) #define MESSAGE_OUT_PHASE (MSGI|CDI) #define MESSAGE_IN_PHASE (MSGI|CDI|IOI) #define PHASE_MASK (MSGI|CDI|IOI) /* Some pseudo phases for getphase()*/ #define BUSFREE_PHASE 0x100 /* Re/Selection no longer valid */ #define INVALID_PHASE 0x101 /* Re/Selection valid, but no REQ yet */ #define PSEUDO_PHASE 0x100 /* "pseudo" bit */ /* * Macros to read and write the chip's registers. */ #define NCR_READ_REG(sc, reg) \ (*(sc)->sc_glue->gl_read_reg)((sc), (reg)) #define NCR_WRITE_REG(sc, reg, val) \ (*(sc)->sc_glue->gl_write_reg)((sc), (reg), (val)) #ifdef NCR53C9X_DEBUG #define NCRCMD(sc, cmd) do { \ if (ncr53c9x_debug & NCR_SHOWCCMDS) \ printf("<cmd:0x%x %d>", (unsigned)cmd, __LINE__); \ sc->sc_lastcmd = cmd; \ NCR_WRITE_REG(sc, NCR_CMD, cmd); \ } while (0) #else #define NCRCMD(sc, cmd) NCR_WRITE_REG(sc, NCR_CMD, cmd) #endif /* * DMA macros for NCR53c9x */ #define NCRDMA_ISINTR(sc) (*(sc)->sc_glue->gl_dma_isintr)((sc)) #define NCRDMA_RESET(sc) (*(sc)->sc_glue->gl_dma_reset)((sc)) #define NCRDMA_INTR(sc) (*(sc)->sc_glue->gl_dma_intr)((sc)) #define NCRDMA_SETUP(sc, addr, len, datain, dmasize) \ (*(sc)->sc_glue->gl_dma_setup)((sc), (addr), (len), (datain), (dmasize)) #define NCRDMA_GO(sc) (*(sc)->sc_glue->gl_dma_go)((sc)) #define NCRDMA_ISACTIVE(sc) (*(sc)->sc_glue->gl_dma_isactive)((sc)) /* * Macro to convert the chip register Clock Per Byte value to * Synchronous Transfer Period. */ #define ncr53c9x_cpb2stp(sc, cpb) \ ((250 * (cpb)) / (sc)->sc_freq) void ncr53c9x_attach(struct ncr53c9x_softc *); void ncr53c9x_reset(struct ncr53c9x_softc *); int ncr53c9x_intr(void *); void ncr53c9x_init(struct ncr53c9x_softc *, int);
