path: root/sys/dev/ic/isp_openbsd.h

/*      $OpenBSD: isp_openbsd.h,v 1.27 2008/01/21 20:00:33 sobrado Exp $ */
/*
 * OpenBSD Specific definitions for the QLogic ISP Host Adapter
 */
/*
 * Copyright (C) 1999, 2000, 2001 by Matthew Jacob
 * 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. 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.
 */
#ifndef	_ISP_OPENBSD_H
#define	_ISP_OPENBSD_H

#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>  
#include <sys/ioctl.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/buf.h> 
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/queue.h>

#if	!(defined(__sparc__) && !defined(__sparcv9__))
#include <machine/bus.h>
#endif

#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>

#include <scsi/scsi_message.h>
#include <scsi/scsi_debug.h>

#include <uvm/uvm_extern.h>

/*
 * Efficiency- get rid of SBus code && tests unless we need them.
 */
#if	defined(__sparcv9__ ) || defined(__sparc__)
#define	ISP_SBUS_SUPPORTED	1
#else
#define	ISP_SBUS_SUPPORTED	0
#endif

#define	ISP_PLATFORM_VERSION_MAJOR	2
#define	ISP_PLATFORM_VERSION_MINOR	1

struct isposinfo {
	struct device		_dev;
	struct scsi_link	_link[2];
	struct scsi_adapter	_adapter;
	int			hiwater;
	int			splsaved;
	int			mboxwaiting;
	u_int32_t		islocked;
	u_int32_t		onintstack;
#if	!(defined(__sparc__) && !defined(__sparcv9__))
	bus_dma_tag_t		dmatag;
	bus_dmamap_t		rqdmap;
	bus_dmamap_t		rsdmap;
	bus_dmamap_t		scdmap;	/* FC only */
#define	isp_dmatag		isp_osinfo.dmatag
#define	isp_rqdmap		isp_osinfo.rqdmap
#define	isp_rsdmap		isp_osinfo.rsdmap
#define	isp_scdmap		isp_osinfo.scdmap
#endif
	unsigned int		: 28,
		
		rtpend		: 1,
		no_mbox_ints	: 1,
		blocked		: 2;
	union {
		u_int64_t 	_wwn;
		u_int16_t	_discovered[2];
	} un;
#define	discovered	un._discovered
	struct scsi_xfer	*wqf, *wqt;
	struct timeout rqt;
};
#define	MUST_POLL(isp)	\
	(isp->isp_osinfo.onintstack || isp->isp_osinfo.no_mbox_ints)

/*
 * Locking macros...
 */
#define	ISP_LOCK		isp_lock
#define	ISP_UNLOCK		isp_unlock

/*
 * Required Macros/Defines
 */

#define	INLINE			__inline

/* We don't want expensive inline functions. */
#define EXP_INLINE

#define	ISP2100_SCRLEN		0x800

#define	MEMZERO			bzero
#define	MEMCPY(dst, src, amt)	bcopy((src), (dst), (amt))
#define	SNPRINTF		snprintf
#define	USEC_DELAY(x)		delay(x)
#define	USEC_SLEEP(isp, x)		\
	if (!MUST_POLL(isp))		\
		ISP_UNLOCK(isp);	\
	delay(x);			\
	if (!MUST_POLL(isp))		\
		ISP_LOCK(isp)

#define	NANOTIME_T		struct timespec
#define	GET_NANOTIME		nanotime
#define	GET_NANOSEC(x)		(((x)->tv_sec * 1000000000 + (x)->tv_nsec))
#define	NANOTIME_SUB		isp_nanotime_sub

#define	MAXISPREQUEST(isp)	256

#if	!(defined(__sparc__) && !defined(__sparcv9__))
#define	MEMORYBARRIER(isp, type, offset, size)			\
switch (type) {							\
case SYNC_REQUEST:						\
{								\
	off_t off = (off_t) offset * QENTRY_LEN;		\
	bus_dmamap_sync(isp->isp_dmatag, isp->isp_rqdmap,	\
	    off, size, BUS_DMASYNC_PREWRITE);			\
	break;							\
}								\
case SYNC_RESULT:						\
{								\
	off_t off = (off_t) offset * QENTRY_LEN;		\
	bus_dmamap_sync(isp->isp_dmatag, isp->isp_rsdmap,	\
	    off, size, BUS_DMASYNC_POSTREAD);			\
	break;							\
}								\
case SYNC_SFORDEV:						\
{								\
	off_t off = (off_t) offset;				\
	bus_dmamap_sync(isp->isp_dmatag, isp->isp_scdmap,	\
	    off, size, BUS_DMASYNC_PREWRITE);			\
	break;							\
}								\
case SYNC_SFORCPU:						\
{								\
	off_t off = (off_t) offset;				\
	bus_dmamap_sync(isp->isp_dmatag, isp->isp_scdmap,	\
	    off, size, BUS_DMASYNC_POSTREAD);			\
	break;							\
}								\
case SYNC_REG:							\
default:							\
	break;							\
}
#else
#define	MEMORYBARRIER(isp, type, offset, size)
#endif

#define	MBOX_ACQUIRE(isp)
#define	MBOX_WAIT_COMPLETE		isp_wait_complete

#define	MBOX_NOTIFY_COMPLETE(isp)					\
	if (isp->isp_osinfo.mboxwaiting) {				\
                isp->isp_osinfo.mboxwaiting = 0;			\
                wakeup(&isp->isp_osinfo.mboxwaiting);			\
        }								\
	isp->isp_mboxbsy = 0

#define	MBOX_RELEASE(isp)

#define	FC_SCRATCH_ACQUIRE(isp)
#define	FC_SCRATCH_RELEASE(isp)

#ifndef	SCSI_GOOD
#define	SCSI_GOOD	0x0
#endif
#ifndef	SCSI_CHECK
#define	SCSI_CHECK	0x2
#endif
#ifndef	SCSI_BUSY
#define	SCSI_BUSY	0x8
#endif
#ifndef	SCSI_QFULL
#define	SCSI_QFULL	0x28
#endif

#define	XS_T			struct scsi_xfer
#define	XS_CHANNEL(xs)		(((xs)->sc_link->flags & SDEV_2NDBUS)? 1 : 0)
#define	XS_ISP(xs)		(xs)->sc_link->adapter_softc
#define	XS_LUN(xs)		((int) (xs)->sc_link->lun)
#define	XS_TGT(xs)		((int) (xs)->sc_link->target)
#define	XS_CDBP(xs)		((caddr_t) (xs)->cmd)
#define	XS_CDBLEN(xs)		(xs)->cmdlen
#define	XS_XFRLEN(xs)		(xs)->datalen
#define	XS_TIME(xs)		(xs)->timeout
#define	XS_RESID(xs)		(xs)->resid
#define	XS_STSP(xs)		(&(xs)->status)
#define	XS_SNSP(xs)		(&(xs)->sense)
#define	XS_SNSLEN(xs)		(sizeof (xs)->sense)
#define	XS_SNSKEY(xs)		((xs)->sense.flags)
#define	XS_TAG_P(xs)		(((xs)->flags & SCSI_POLL) != 0)
#define	XS_TAG_TYPE(xs)		REQFLAG_STAG

#define	XS_SETERR(xs, v)	(xs)->error = v

#	define	HBA_NOERROR		XS_NOERROR
#	define	HBA_BOTCH		XS_DRIVER_STUFFUP
#	define	HBA_CMDTIMEOUT		XS_TIMEOUT
#	define	HBA_SELTIMEOUT		XS_SELTIMEOUT
#	define	HBA_TGTBSY		XS_BUSY
#	define	HBA_BUSRESET		XS_RESET
#	define	HBA_ABORTED		XS_DRIVER_STUFFUP
#	define	HBA_DATAOVR		XS_DRIVER_STUFFUP
#	define	HBA_ARQFAIL		XS_DRIVER_STUFFUP

#define	XS_ERR(xs)		(xs)->error

#define	XS_NOERR(xs)		(xs)->error == XS_NOERROR

#define	XS_INITERR(xs)		(xs)->error = 0, XS_CMD_S_CLEAR(xs)

#define	XS_SAVE_SENSE(xs, sp)				\
	if (xs->error == XS_NOERROR) {			\
		xs->error = XS_SENSE;			\
	}						\
	bcopy(sp->req_sense_data, &(xs)->sense,		\
	    imin(XS_SNSLEN(xs), sp->req_sense_len))

#define	XS_SET_STATE_STAT(a, b, c)

#define	DEFAULT_IID(x)		7
#define	DEFAULT_LOOPID(x)	107
#define	DEFAULT_NODEWWN(isp)	(isp)->isp_osinfo.un._wwn
#define	DEFAULT_PORTWWN(isp)	(isp)->isp_osinfo.un._wwn
#define	ISP_NODEWWN(isp)	FCPARAM(isp)->isp_nodewwn
#define	ISP_PORTWWN(isp)	FCPARAM(isp)->isp_portwwn

#if	BYTE_ORDER == BIG_ENDIAN
#ifdef	ISP_SBUS_SUPPORTED
#define	ISP_IOXPUT_8(isp, s, d)		*(d) = s
#define	ISP_IOXPUT_16(isp, s, d)				\
	*(d) = (isp->isp_bustype == ISP_BT_SBUS)? s : swap16(s)
#define	ISP_IOXPUT_32(isp, s, d)				\
	*(d) = (isp->isp_bustype == ISP_BT_SBUS)? s : swap32(s)

#define	ISP_IOXGET_8(isp, s, d)		d = (*((u_int8_t *)s))
#define	ISP_IOXGET_16(isp, s, d)				\
	d = (isp->isp_bustype == ISP_BT_SBUS)?			\
	*((u_int16_t *)s) : swap16(*((u_int16_t *)s))
#define	ISP_IOXGET_32(isp, s, d)				\
	d = (isp->isp_bustype == ISP_BT_SBUS)?			\
	*((u_int32_t *)s) : swap32(*((u_int32_t *)s))
#else
#define	ISP_IOXPUT_8(isp, s, d)		*(d) = s
#define	ISP_IOXPUT_16(isp, s, d)	*(d) = swap16(s)
#define	ISP_IOXPUT_32(isp, s, d)	*(d) = swap32(s)
#define	ISP_IOXGET_8(isp, s, d)		d = (*((u_int8_t *)s))
#define	ISP_IOXGET_16(isp, s, d)	d = swap16(*((u_int16_t *)s))
#define	ISP_IOXGET_32(isp, s, d)	d = swap32(*((u_int32_t *)s))
#endif
#define	ISP_SWIZZLE_NVRAM_WORD(isp, rp)	*rp = swap16(*rp)
#else
#define	ISP_IOXPUT_8(isp, s, d)		*(d) = s
#define	ISP_IOXPUT_16(isp, s, d)	*(d) = s
#define	ISP_IOXPUT_32(isp, s, d)	*(d) = s
#define	ISP_IOXGET_8(isp, s, d)		d = *(s)
#define	ISP_IOXGET_16(isp, s, d)	d = *(s)
#define	ISP_IOXGET_32(isp, s, d)	d = *(s)
#define	ISP_SWIZZLE_NVRAM_WORD(isp, rp)
#endif

/*
 * Includes of common header files
 */

#include <dev/ic/ispreg.h>
#include <dev/ic/ispvar.h>
#include <dev/ic/ispmbox.h>

/*
 * isp_osinfo definitions, extensions and shorthand.
 */
#define	isp_name	isp_osinfo._dev.dv_xname
#define	isp_unit	isp_osinfo._dev.dv_unit

/*
 * Driver prototypes..
 */
void isp_attach(struct ispsoftc *);
void isp_uninit(struct ispsoftc *);

static INLINE void isp_lock(struct ispsoftc *);
static INLINE void isp_unlock(struct ispsoftc *);
static INLINE u_int64_t
isp_nanotime_sub(struct timespec *, struct timespec *);
static void isp_wait_complete(struct ispsoftc *);

/*
 * Driver wide data...
 */

/*              
 * Platform private flags                                               
 */

#define	XS_PSTS_INWDOG		0x10000
#define	XS_PSTS_GRACE		0x20000
#define	XS_PSTS_TIMED		0x40000
#define	XS_PSTS_ALL		SCSI_PRIVATE

#define	XS_CMD_S_WDOG(xs)	(xs)->flags |= XS_PSTS_INWDOG
#define	XS_CMD_C_WDOG(xs)	(xs)->flags &= ~XS_PSTS_INWDOG
#define	XS_CMD_WDOG_P(xs)	(((xs)->flags & XS_PSTS_INWDOG) != 0)

#define	XS_CMD_S_TIMER(xs)	(xs)->flags |= XS_PSTS_TIMED
#define	XS_CMD_C_TIMER(xs)	(xs)->flags &= ~XS_PSTS_TIMED
#define	XS_CMD_TIMER_P(xs)	(((xs)->flags & XS_PSTS_TIMED) != 0)

#define	XS_CMD_S_GRACE(xs)	(xs)->flags |= XS_PSTS_GRACE
#define	XS_CMD_C_GRACE(xs)	(xs)->flags &= ~XS_PSTS_GRACE
#define	XS_CMD_GRACE_P(xs)	(((xs)->flags & XS_PSTS_GRACE) != 0)

#define	XS_CMD_S_DONE(xs)	(xs)->flags |= ITSDONE
#define	XS_CMD_C_DONE(xs)	(xs)->flags &= ~ITSDONE
#define	XS_CMD_DONE_P(xs)	(((xs)->flags & ITSDONE) != 0)

#define	XS_CMD_S_CLEAR(xs)	(xs)->flags &= ~XS_PSTS_ALL

/*
 * Platform specific 'INLINE' or support functions
 */
static INLINE void
isp_lock(struct ispsoftc *isp)
{
	int s = splbio();
	if (isp->isp_osinfo.islocked++ == 0) {
		isp->isp_osinfo.splsaved = s;
	} else {
		splx(s);
	}
}

static INLINE void
isp_unlock(struct ispsoftc *isp)
{
	if (isp->isp_osinfo.islocked-- <= 1) {
		isp->isp_osinfo.islocked = 0;
		splx(isp->isp_osinfo.splsaved);
	}
}

static INLINE u_int64_t
isp_nanotime_sub(struct timespec *b, struct timespec *a)
{
	struct timespec x;
	u_int64_t elapsed;
	timespecsub(b, a, &x);
	elapsed = GET_NANOSEC(&x);
	if (elapsed == 0)
		elapsed++;
	return (elapsed);
}

static INLINE void
isp_wait_complete(struct ispsoftc *isp)
{
	int delaytime;
	if (isp->isp_mbxwrk0)
		delaytime = 60;
	else
		delaytime = 5;
	if (MUST_POLL(isp)) {
		int usecs = 0;
		delaytime *= 1000000;	/* convert to usecs */
		while (usecs < delaytime) {
			u_int16_t isr, sema, mbox;
			if (isp->isp_mboxbsy == 0) {
				break;
			}
			if (ISP_READ_ISR(isp, &isr, &sema, &mbox)) {
				isp_intr(isp, isr, sema, mbox);
				if (isp->isp_mboxbsy == 0) {
					break;
				}
			}
			USEC_DELAY(500);
			usecs += 500;
		}
		if (isp->isp_mboxbsy != 0) {
			isp_prt(isp, ISP_LOGWARN,
			    "Polled Mailbox Command (0x%x) Timeout",
			    isp->isp_lastmbxcmd);
		}
	} else {
		int rv = 0;
                isp->isp_osinfo.mboxwaiting = 1;
                while (isp->isp_osinfo.mboxwaiting && rv == 0) {
			rv = tsleep(&isp->isp_osinfo.mboxwaiting,
			    PRIBIO, "isp_mboxcmd", delaytime * hz);
		}
		if (rv == EWOULDBLOCK) {
			isp->isp_mboxbsy = 0;
			isp->isp_osinfo.mboxwaiting = 0;
			isp_prt(isp, ISP_LOGWARN,
			    "Interrupting Mailbox Command (0x%x) Timeout",
			    isp->isp_lastmbxcmd);
		}
	}
}

/*
 * Common INLINE functions
 */
#include <dev/ic/isp_inline.h>

#endif	/* _ISP_NETBSD_H */