/* $NetBSD: ncr53c9xvar.h,v 1.55 2011/07/31 18:39:00 jakllsch Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause-NetBSD AND BSD-4-Clause
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Peter Galbavy.
* 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.
*/
/* $FreeBSD$ */
#ifndef _NCR53C9XVAR_H_
#define _NCR53C9XVAR_H_
#include <sys/lock.h>
/* Set this to 1 for normal debug, or 2 for per-target tracing. */
/* #define NCR53C9X_DEBUG 2 */
/* Wide or differential can have 16 targets */
#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; do not modify them unless you know what you are 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_NCR53C90_86C01 10
#define NCR_VARIANT_FAS100A 11
#define NCR_VARIANT_FAS236 12
#define NCR_VARIANT_MAX 13
/* XXX Max tag depth. Should this be defined in the register header? */
#define NCR_TAG_DEPTH 256
/*
* 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 ccb union (except do the expected updating of return values).
* We'll generally update: ccb->ccb_h.status and ccb->csio.{resid,
* scsi_status,sense_data}.
*/
struct ncr53c9x_ecb {
/* These fields are preserved between alloc and free. */
struct callout ch;
struct ncr53c9x_softc *sc;
int tag_id;
int flags;
union ccb *ccb; /* SCSI xfer ctrl block from above */
TAILQ_ENTRY(ncr53c9x_ecb) free_links;
TAILQ_ENTRY(ncr53c9x_ecb) chain;
#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
int timeout;
struct {
uint8_t msg[3]; /* Selection Id msg and tags */
struct scsi_generic cmd; /* SCSI command block */
} cmd;
uint8_t *daddr; /* Saved data pointer */
int clen; /* Size of command in cmd.cmd */
int dleft; /* Residue */
uint8_t stat; /* SCSI status byte */
uint8_t tag[2]; /* TAG bytes */
uint8_t pad[1];
#if defined(NCR53C9X_DEBUG) && NCR53C9X_DEBUG > 1
char trace[1000];
#endif
};
#if defined(NCR53C9X_DEBUG) && 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)) \
sprintf((ecb)->trace + n, f, a, b); \
} while (/* CONSTCOND */0)
#else
#define ECB_TRACE(ecb, msg, a, b)
#endif
/*
* Some info about each (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;
uint8_t used; /* # slots in use */
uint8_t avail; /* where to start scanning */
uint8_t busy;
struct ncr53c9x_ecb *untagged;
struct ncr53c9x_ecb *queued[NCR_TAG_DEPTH];
};
struct ncr53c9x_xinfo {
uint8_t period;
uint8_t offset;
uint8_t width;
};
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 */
uint8_t flags;
#define T_SYNCHOFF 0x01 /* SYNC mode is permanently off */
#define T_RSELECTOFF 0x02 /* RE-SELECT mode is off */
#define T_TAG 0x04 /* Turn on TAG QUEUEs */
#define T_SDTRSENT 0x08 /* SDTR message has been sent to */
#define T_WDTRSENT 0x10 /* WDTR message has been sent to */
struct ncr53c9x_xinfo curr;
struct ncr53c9x_xinfo goal;
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) != 0) \
printf str; \
} while (/* CONSTCOND */0)
#define NCR_MISC(str) \
do { \
if ((ncr53c9x_debug & NCR_SHOWMISC) != 0) \
printf str; \
} while (/* CONSTCOND */0)
#define NCR_INTS(str) \
do { \
if ((ncr53c9x_debug & NCR_SHOWINTS) != 0) \
printf str; \
} while (/* CONSTCOND */0)
#define NCR_TRACE(str) \
do { \
if ((ncr53c9x_debug & NCR_SHOWTRAC) != 0) \
printf str; \
} while (/* CONSTCOND */0)
#define NCR_CMDS(str) \
do { \
if ((ncr53c9x_debug & NCR_SHOWCMDS) != 0) \
printf str; \
} while (/* CONSTCOND */0)
#define NCR_START(str) \
do { \
if ((ncr53c9x_debug & NCR_SHOWSTART) != 0) \
printf str; \
} while (/* CONSTCOND */0)
#define NCR_PHASE(str) \
do { \
if ((ncr53c9x_debug & NCR_SHOWPHASE) != 0) \
printf str; \
} while (/* CONSTCOND */0)
#define NCR_DMA(str) \
do { \
if ((ncr53c9x_debug & NCR_SHOWDMA) != 0) \
printf str; \
} while (/* CONSTCOND */0)
#define NCR_MSGS(str) \
do { \
if ((ncr53c9x_debug & NCR_SHOWMSGS) != 0) \
printf str; \
} while (/* CONSTCOND */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. */
uint8_t (*gl_read_reg)(struct ncr53c9x_softc *, int);
void (*gl_write_reg)(struct ncr53c9x_softc *, int, uint8_t);
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 *, void **, 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 *);
};
struct ncr53c9x_softc {
device_t sc_dev; /* us as a device */
struct cam_sim *sc_sim; /* our scsi adapter */
struct cam_path *sc_path; /* our scsi channel */
struct callout sc_watchdog; /* periodic timer */
const struct ncr53c9x_glue *sc_glue; /* glue to MD code */
int sc_cfflags; /* Copy of config flags */
/* register defaults */
uint8_t sc_cfg1; /* Config 1 */
uint8_t sc_cfg2; /* Config 2, not ESP100 */
uint8_t sc_cfg3; /* Config 3, ESP200,FAS */
uint8_t sc_cfg3_fscsi; /* Chip-specific FSCSI bit */
uint8_t sc_cfg4; /* Config 4, only ESP200 */
uint8_t sc_cfg5; /* Config 5, only ESP200 */
uint8_t sc_ccf; /* Clock Conversion */
uint8_t sc_timeout;
/* register copies, see ncr53c9x_readregs() */
uint8_t sc_espintr;
uint8_t sc_espstat;
uint8_t sc_espstep;
uint8_t sc_espstat2;
uint8_t sc_espfflags;
/* Lists of command blocks */
TAILQ_HEAD(ecb_list, ncr53c9x_ecb) ready_list;
struct ncr53c9x_ecb *sc_nexus; /* Current command */
int sc_ntarg;
struct ncr53c9x_tinfo *sc_tinfo;
/* Data about the current nexus (updated for every cmd switch) */
void *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 */
uint8_t sc_state; /* State applicable to the adapter */
uint8_t sc_flags; /* See below */
uint8_t sc_selid;
uint8_t sc_lastcmd;
/* Message stuff */
uint16_t sc_msgify; /* IDENTIFY message associated with nexus */
uint16_t sc_msgout; /* What message is on its way out? */
uint16_t sc_msgpriq; /* One or more messages to send (encoded) */
uint16_t sc_msgoutq; /* What messages have been sent so far? */
uint8_t *sc_omess; /* MSGOUT buffer */
int sc_omess_self; /* MSGOUT buffer is self-allocated */
void *sc_omp; /* Message pointer (for multibyte messages) */
size_t sc_omlen;
uint8_t *sc_imess; /* MSGIN buffer */
int sc_imess_self; /* MSGIN buffer is self-allocated */
void *sc_imp; /* Message pointer (for multibyte messages) */
size_t sc_imlen;
void *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 */
int sc_maxoffset; /* Maximum offset */
int sc_maxwidth; /* Maximum width */
int sc_extended_geom; /* Should we return extended geometry */
struct mtx sc_lock; /* driver mutex */
struct ncr53c9x_ecb *ecb_array;
TAILQ_HEAD(,ncr53c9x_ecb) free_list;
};
/* 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_ICCS 0x04 /* Expect status phase results */
#define NCR_WAITI 0x08 /* Waiting for non-DMA data to arrive */
#define NCR_ATN 0x10 /* ATN asserted */
#define NCR_EXPECT_ILLCMD 0x20 /* 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 dmaselect */
#define NCR_F_SELATN3 0x08 /* chip supports SELATN3 command */
#define NCR_F_LARGEXFER 0x10 /* chip supports transfers > 64k */
/* 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_TAG 0x0040
#define SEND_WDTR 0x0080
#define SEND_SDTR 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) != 0) \
printf("<CMD:0x%x %d>", (unsigned int)cmd, __LINE__); \
sc->sc_lastcmd = cmd; \
NCR_WRITE_REG(sc, NCR_CMD, cmd); \
} while (/* CONSTCOND */ 0)
#else
#define NCRCMD(sc, cmd) NCR_WRITE_REG(sc, NCR_CMD, cmd)
#endif
/*
* Macros for locking
*/
#define NCR_LOCK_INIT(_sc) \
mtx_init(&(_sc)->sc_lock, "ncr", "ncr53c9x lock", MTX_DEF);
#define NCR_LOCK_INITIALIZED(_sc) mtx_initialized(&(_sc)->sc_lock)
#define NCR_LOCK(_sc) mtx_lock(&(_sc)->sc_lock)
#define NCR_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_lock)
#define NCR_LOCK_ASSERT(_sc, _what) mtx_assert(&(_sc)->sc_lock, (_what))
#define NCR_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_lock)
/*
* 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_STOP(sc) (*(sc)->sc_glue->gl_dma_stop)((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)
extern devclass_t esp_devclass;
int ncr53c9x_attach(struct ncr53c9x_softc *sc);
int ncr53c9x_detach(struct ncr53c9x_softc *sc);
void ncr53c9x_intr(void *arg);
#endif /* _NCR53C9XVAR_H_ */
