1998-02-04 08:12:46 +03:00
|
|
|
/* $NetBSD: uha.c,v 1.15 1998/02/04 05:14:02 thorpej Exp $ */
|
1996-09-01 00:26:48 +04:00
|
|
|
|
|
|
|
#undef UHADEBUG
|
|
|
|
#ifdef DDB
|
|
|
|
#define integrate
|
|
|
|
#else
|
|
|
|
#define integrate static inline
|
|
|
|
#endif
|
|
|
|
|
1997-06-07 03:30:02 +04:00
|
|
|
/*-
|
1998-02-04 08:12:46 +03:00
|
|
|
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
|
1997-06-07 03:30:02 +04:00
|
|
|
* 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.
|
|
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
|
|
* must display the following acknowledgement:
|
|
|
|
* This product includes software developed by the NetBSD
|
|
|
|
* Foundation, Inc. and its contributors.
|
|
|
|
* 4. Neither the name of The NetBSD Foundation 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 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.
|
|
|
|
*/
|
|
|
|
|
1996-09-01 00:26:48 +04:00
|
|
|
/*
|
1997-03-29 05:32:30 +03:00
|
|
|
* Copyright (c) 1994, 1996, 1997 Charles M. Hannum. All rights reserved.
|
1996-09-01 00:26:48 +04:00
|
|
|
*
|
|
|
|
* 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 Charles M. Hannum.
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Ported for use with the UltraStor 14f by Gary Close (gclose@wvnvms.wvnet.edu)
|
|
|
|
* Slight fixes to timeouts to run with the 34F
|
|
|
|
* Thanks to Julian Elischer for advice and help with this port.
|
|
|
|
*
|
|
|
|
* Originally written by Julian Elischer (julian@tfs.com)
|
|
|
|
* for TRW Financial Systems for use under the MACH(2.5) operating system.
|
|
|
|
*
|
|
|
|
* TRW Financial Systems, in accordance with their agreement with Carnegie
|
|
|
|
* Mellon University, makes this software available to CMU to distribute
|
|
|
|
* or use in any manner that they see fit as long as this message is kept with
|
|
|
|
* the software. For this reason TFS also grants any other persons or
|
|
|
|
* organisations permission to use or modify this software.
|
|
|
|
*
|
|
|
|
* TFS supplies this software to be publicly redistributed
|
|
|
|
* on the understanding that TFS is not responsible for the correct
|
|
|
|
* functioning of this software in any circumstances.
|
|
|
|
*
|
|
|
|
* commenced: Sun Sep 27 18:14:01 PDT 1992
|
|
|
|
* slight mod to make work with 34F as well: Wed Jun 2 18:05:48 WST 1993
|
|
|
|
*/
|
|
|
|
|
|
|
|
#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 <machine/bus.h>
|
|
|
|
#include <machine/intr.h>
|
|
|
|
|
1997-08-27 15:22:52 +04:00
|
|
|
#include <dev/scsipi/scsi_all.h>
|
|
|
|
#include <dev/scsipi/scsipi_all.h>
|
|
|
|
#include <dev/scsipi/scsiconf.h>
|
1996-09-01 00:26:48 +04:00
|
|
|
|
|
|
|
#include <dev/ic/uhareg.h>
|
|
|
|
#include <dev/ic/uhavar.h>
|
|
|
|
|
|
|
|
#ifndef DDB
|
1996-11-16 01:53:36 +03:00
|
|
|
#define Debugger() panic("should call debugger here (uha.c)")
|
1996-09-01 00:26:48 +04:00
|
|
|
#endif /* ! DDB */
|
|
|
|
|
1997-06-07 03:30:02 +04:00
|
|
|
#define UHA_MAXXFER ((UHA_NSEG - 1) << PGSHIFT)
|
1996-09-01 00:26:48 +04:00
|
|
|
|
1996-11-12 23:57:43 +03:00
|
|
|
integrate void uha_reset_mscp __P((struct uha_softc *, struct uha_mscp *));
|
1996-09-01 00:26:48 +04:00
|
|
|
void uha_free_mscp __P((struct uha_softc *, struct uha_mscp *));
|
1997-10-29 02:46:49 +03:00
|
|
|
integrate int uha_init_mscp __P((struct uha_softc *, struct uha_mscp *));
|
1996-09-01 00:26:48 +04:00
|
|
|
struct uha_mscp *uha_get_mscp __P((struct uha_softc *, int));
|
|
|
|
void uhaminphys __P((struct buf *));
|
1997-08-27 15:22:52 +04:00
|
|
|
int uha_scsi_cmd __P((struct scsipi_xfer *));
|
1997-06-07 03:30:02 +04:00
|
|
|
int uha_create_mscps __P((struct uha_softc *, void *, size_t));
|
1997-11-04 08:58:22 +03:00
|
|
|
void uha_enqueue __P((struct uha_softc *, struct scsipi_xfer *, int));
|
|
|
|
struct scsipi_xfer *uha_dequeue __P((struct uha_softc *));
|
1996-09-01 00:26:48 +04:00
|
|
|
|
1997-08-27 15:22:52 +04:00
|
|
|
struct scsipi_adapter uha_switch = {
|
1996-09-01 00:26:48 +04:00
|
|
|
uha_scsi_cmd,
|
|
|
|
uhaminphys,
|
|
|
|
0,
|
|
|
|
0,
|
|
|
|
};
|
|
|
|
|
|
|
|
/* the below structure is so we have a default dev struct for out link struct */
|
1997-08-27 15:22:52 +04:00
|
|
|
struct scsipi_device uha_dev = {
|
1996-09-01 00:26:48 +04:00
|
|
|
NULL, /* Use default error handler */
|
|
|
|
NULL, /* have a queue, served by this */
|
|
|
|
NULL, /* have no async handler */
|
|
|
|
NULL, /* Use default 'done' routine */
|
|
|
|
};
|
|
|
|
|
|
|
|
#define UHA_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */
|
|
|
|
|
1997-11-04 08:58:22 +03:00
|
|
|
/*
|
|
|
|
* Insert a scsipi_xfer into the software queue. We overload xs->free_list
|
|
|
|
* to avoid having to allocate additional resources (since we're used
|
|
|
|
* only during resource shortages anyhow.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
uha_enqueue(sc, xs, infront)
|
|
|
|
struct uha_softc *sc;
|
|
|
|
struct scsipi_xfer *xs;
|
|
|
|
int infront;
|
|
|
|
{
|
|
|
|
|
|
|
|
if (infront || sc->sc_queue.lh_first == NULL) {
|
|
|
|
if (sc->sc_queue.lh_first == NULL)
|
|
|
|
sc->sc_queuelast = xs;
|
|
|
|
LIST_INSERT_HEAD(&sc->sc_queue, xs, free_list);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
LIST_INSERT_AFTER(sc->sc_queuelast, xs, free_list);
|
|
|
|
sc->sc_queuelast = xs;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Pull a scsipi_xfer off the front of the software queue.
|
|
|
|
*/
|
|
|
|
struct scsipi_xfer *
|
|
|
|
uha_dequeue(sc)
|
|
|
|
struct uha_softc *sc;
|
|
|
|
{
|
|
|
|
struct scsipi_xfer *xs;
|
|
|
|
|
|
|
|
xs = sc->sc_queue.lh_first;
|
|
|
|
LIST_REMOVE(xs, free_list);
|
|
|
|
|
|
|
|
if (sc->sc_queue.lh_first == NULL)
|
|
|
|
sc->sc_queuelast = NULL;
|
|
|
|
|
|
|
|
return (xs);
|
|
|
|
}
|
|
|
|
|
1996-09-01 00:26:48 +04:00
|
|
|
/*
|
|
|
|
* Attach all the sub-devices we can find
|
|
|
|
*/
|
|
|
|
void
|
1997-03-29 05:32:30 +03:00
|
|
|
uha_attach(sc, upd)
|
1996-09-01 00:26:48 +04:00
|
|
|
struct uha_softc *sc;
|
1997-03-29 05:32:30 +03:00
|
|
|
struct uha_probe_data *upd;
|
1996-09-01 00:26:48 +04:00
|
|
|
{
|
|
|
|
|
|
|
|
TAILQ_INIT(&sc->sc_free_mscp);
|
1997-11-04 08:58:22 +03:00
|
|
|
LIST_INIT(&sc->sc_queue);
|
1996-09-01 00:26:48 +04:00
|
|
|
|
1997-06-07 03:30:02 +04:00
|
|
|
(sc->init)(sc);
|
|
|
|
|
1996-09-01 00:26:48 +04:00
|
|
|
/*
|
1997-08-27 15:22:52 +04:00
|
|
|
* fill in the prototype scsipi_link.
|
1996-09-01 00:26:48 +04:00
|
|
|
*/
|
1997-08-27 15:22:52 +04:00
|
|
|
sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
|
1996-09-01 00:26:48 +04:00
|
|
|
sc->sc_link.adapter_softc = sc;
|
1997-08-27 15:22:52 +04:00
|
|
|
sc->sc_link.scsipi_scsi.adapter_target = upd->sc_scsi_dev;
|
1996-09-01 00:26:48 +04:00
|
|
|
sc->sc_link.adapter = &uha_switch;
|
|
|
|
sc->sc_link.device = &uha_dev;
|
|
|
|
sc->sc_link.openings = 2;
|
1997-08-27 15:22:52 +04:00
|
|
|
sc->sc_link.scsipi_scsi.max_target = 7;
|
|
|
|
sc->sc_link.type = BUS_SCSI;
|
1996-09-01 00:26:48 +04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* ask the adapter what subunits are present
|
|
|
|
*/
|
|
|
|
config_found(&sc->sc_dev, &sc->sc_link, scsiprint);
|
|
|
|
}
|
|
|
|
|
|
|
|
integrate void
|
|
|
|
uha_reset_mscp(sc, mscp)
|
|
|
|
struct uha_softc *sc;
|
|
|
|
struct uha_mscp *mscp;
|
|
|
|
{
|
|
|
|
|
|
|
|
mscp->flags = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* A mscp (and hence a mbx-out) is put onto the free list.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
uha_free_mscp(sc, mscp)
|
|
|
|
struct uha_softc *sc;
|
|
|
|
struct uha_mscp *mscp;
|
|
|
|
{
|
|
|
|
int s;
|
|
|
|
|
|
|
|
s = splbio();
|
|
|
|
|
|
|
|
uha_reset_mscp(sc, mscp);
|
|
|
|
TAILQ_INSERT_HEAD(&sc->sc_free_mscp, mscp, chain);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If there were none, wake anybody waiting for one to come free,
|
|
|
|
* starting with queued entries.
|
|
|
|
*/
|
|
|
|
if (mscp->chain.tqe_next == 0)
|
|
|
|
wakeup(&sc->sc_free_mscp);
|
|
|
|
|
|
|
|
splx(s);
|
|
|
|
}
|
|
|
|
|
1997-10-29 02:46:49 +03:00
|
|
|
integrate int
|
1996-09-01 00:26:48 +04:00
|
|
|
uha_init_mscp(sc, mscp)
|
|
|
|
struct uha_softc *sc;
|
|
|
|
struct uha_mscp *mscp;
|
|
|
|
{
|
1997-06-07 03:30:02 +04:00
|
|
|
bus_dma_tag_t dmat = sc->sc_dmat;
|
1997-10-29 02:46:49 +03:00
|
|
|
int hashnum, error;
|
1996-09-01 00:26:48 +04:00
|
|
|
|
1997-06-07 03:30:02 +04:00
|
|
|
/*
|
|
|
|
* XXX Should we put a DIAGNOSTIC check for multiple
|
|
|
|
* XXX MSCP inits here?
|
|
|
|
*/
|
|
|
|
|
1996-09-01 00:26:48 +04:00
|
|
|
bzero(mscp, sizeof(struct uha_mscp));
|
1997-06-07 03:30:02 +04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Create the DMA maps for this MSCP.
|
|
|
|
*/
|
1997-10-29 02:46:49 +03:00
|
|
|
error = bus_dmamap_create(dmat, sizeof(struct uha_mscp), 1,
|
1997-06-07 03:30:02 +04:00
|
|
|
sizeof(struct uha_mscp), 0, BUS_DMA_NOWAIT | sc->sc_dmaflags,
|
1997-10-29 02:46:49 +03:00
|
|
|
&mscp->dmamap_self);
|
|
|
|
if (error) {
|
|
|
|
printf("%s: can't create mscp dmamap_self\n",
|
|
|
|
sc->sc_dev.dv_xname);
|
|
|
|
return (error);
|
|
|
|
}
|
1997-06-07 03:30:02 +04:00
|
|
|
|
1997-10-29 02:46:49 +03:00
|
|
|
error = bus_dmamap_create(dmat, UHA_MAXXFER, UHA_NSEG, UHA_MAXXFER,
|
1997-06-07 03:30:02 +04:00
|
|
|
0, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW | sc->sc_dmaflags,
|
1997-10-29 02:46:49 +03:00
|
|
|
&mscp->dmamap_xfer);
|
|
|
|
if (error) {
|
|
|
|
printf("%s: can't create mscp dmamap_xfer\n",
|
|
|
|
sc->sc_dev.dv_xname);
|
|
|
|
return (error);
|
|
|
|
}
|
1997-06-07 03:30:02 +04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Load the permanent DMA maps.
|
|
|
|
*/
|
1997-10-29 02:46:49 +03:00
|
|
|
error = bus_dmamap_load(dmat, mscp->dmamap_self, mscp,
|
|
|
|
sizeof(struct uha_mscp), NULL, BUS_DMA_NOWAIT);
|
|
|
|
if (error) {
|
|
|
|
printf("%s: can't load mscp dmamap_self\n",
|
|
|
|
sc->sc_dev.dv_xname);
|
|
|
|
bus_dmamap_destroy(dmat, mscp->dmamap_self);
|
|
|
|
bus_dmamap_destroy(dmat, mscp->dmamap_xfer);
|
|
|
|
return (error);
|
|
|
|
}
|
1997-06-07 03:30:02 +04:00
|
|
|
|
1996-09-01 00:26:48 +04:00
|
|
|
/*
|
|
|
|
* put in the phystokv hash table
|
|
|
|
* Never gets taken out.
|
|
|
|
*/
|
1997-06-07 03:30:02 +04:00
|
|
|
mscp->hashkey = mscp->dmamap_self->dm_segs[0].ds_addr;
|
1996-09-01 00:26:48 +04:00
|
|
|
hashnum = MSCP_HASH(mscp->hashkey);
|
|
|
|
mscp->nexthash = sc->sc_mscphash[hashnum];
|
|
|
|
sc->sc_mscphash[hashnum] = mscp;
|
|
|
|
uha_reset_mscp(sc, mscp);
|
1997-10-29 02:46:49 +03:00
|
|
|
return (0);
|
1996-09-01 00:26:48 +04:00
|
|
|
}
|
|
|
|
|
1997-06-07 03:30:02 +04:00
|
|
|
/*
|
|
|
|
* Create a set of MSCPs and add them to the free list.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
uha_create_mscps(sc, mem, size)
|
|
|
|
struct uha_softc *sc;
|
|
|
|
void *mem;
|
|
|
|
size_t size;
|
|
|
|
{
|
|
|
|
bus_dma_segment_t seg;
|
|
|
|
struct uha_mscp *mscp;
|
|
|
|
int rseg, error;
|
|
|
|
|
|
|
|
if (sc->sc_nummscps >= UHA_MSCP_MAX)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
if ((mscp = mem) != NULL)
|
|
|
|
goto have_mem;
|
|
|
|
|
|
|
|
size = NBPG;
|
|
|
|
error = bus_dmamem_alloc(sc->sc_dmat, size, NBPG, 0, &seg, 1, &rseg,
|
|
|
|
BUS_DMA_NOWAIT);
|
1997-10-29 02:46:49 +03:00
|
|
|
if (error) {
|
|
|
|
printf("%s: can't allocate memory for mscps\n",
|
|
|
|
sc->sc_dev.dv_xname);
|
1997-06-07 03:30:02 +04:00
|
|
|
return (error);
|
1997-10-29 02:46:49 +03:00
|
|
|
}
|
1997-06-07 03:30:02 +04:00
|
|
|
|
|
|
|
error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, size,
|
1998-02-04 03:32:55 +03:00
|
|
|
(caddr_t *)&mscp, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
|
1997-06-07 03:30:02 +04:00
|
|
|
if (error) {
|
1997-10-29 02:46:49 +03:00
|
|
|
printf("%s: can't map memory for mscps\n",
|
|
|
|
sc->sc_dev.dv_xname);
|
1997-06-07 03:30:02 +04:00
|
|
|
bus_dmamem_free(sc->sc_dmat, &seg, rseg);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
have_mem:
|
|
|
|
bzero(mscp, size);
|
1997-10-29 02:46:49 +03:00
|
|
|
while (size > sizeof(struct uha_mscp) &&
|
|
|
|
sc->sc_nummscps < UHA_MSCP_MAX) {
|
|
|
|
error = uha_init_mscp(sc, mscp);
|
|
|
|
if (error) {
|
|
|
|
printf("%s: can't initialize mscp\n",
|
|
|
|
sc->sc_dev.dv_xname);
|
|
|
|
return (error);
|
|
|
|
}
|
1997-06-07 03:30:02 +04:00
|
|
|
TAILQ_INSERT_TAIL(&sc->sc_free_mscp, mscp, chain);
|
|
|
|
(caddr_t)mscp += ALIGN(sizeof(struct uha_mscp));
|
|
|
|
size -= ALIGN(sizeof(struct uha_mscp));
|
1997-10-29 02:46:49 +03:00
|
|
|
sc->sc_nummscps++;
|
1997-06-07 03:30:02 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
1996-09-01 00:26:48 +04:00
|
|
|
/*
|
|
|
|
* Get a free mscp
|
|
|
|
*
|
|
|
|
* If there are none, see if we can allocate a new one. If so, put it in the
|
|
|
|
* hash table too otherwise either return an error or sleep.
|
|
|
|
*/
|
|
|
|
struct uha_mscp *
|
|
|
|
uha_get_mscp(sc, flags)
|
|
|
|
struct uha_softc *sc;
|
|
|
|
int flags;
|
|
|
|
{
|
|
|
|
struct uha_mscp *mscp;
|
|
|
|
int s;
|
|
|
|
|
|
|
|
s = splbio();
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we can and have to, sleep waiting for one to come free
|
|
|
|
* but only if we can't allocate a new one
|
|
|
|
*/
|
|
|
|
for (;;) {
|
|
|
|
mscp = sc->sc_free_mscp.tqh_first;
|
|
|
|
if (mscp) {
|
|
|
|
TAILQ_REMOVE(&sc->sc_free_mscp, mscp, chain);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (sc->sc_nummscps < UHA_MSCP_MAX) {
|
1997-10-29 02:46:49 +03:00
|
|
|
/*
|
|
|
|
* uha_create_mscps() might have managed to create
|
|
|
|
* one before it failed. If so, don't abort,
|
|
|
|
* just grab it and continue to hobble along.
|
|
|
|
*/
|
|
|
|
if (uha_create_mscps(sc, NULL, 0) &&
|
|
|
|
sc->sc_free_mscp.tqh_first == NULL) {
|
1997-06-07 03:30:02 +04:00
|
|
|
printf("%s: can't allocate mscps\n",
|
1996-09-01 00:26:48 +04:00
|
|
|
sc->sc_dev.dv_xname);
|
|
|
|
goto out;
|
|
|
|
}
|
1997-06-07 03:30:02 +04:00
|
|
|
continue;
|
1996-09-01 00:26:48 +04:00
|
|
|
}
|
|
|
|
if ((flags & SCSI_NOSLEEP) != 0)
|
|
|
|
goto out;
|
|
|
|
tsleep(&sc->sc_free_mscp, PRIBIO, "uhamsc", 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
mscp->flags |= MSCP_ALLOC;
|
|
|
|
|
|
|
|
out:
|
|
|
|
splx(s);
|
|
|
|
return (mscp);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* given a physical address, find the mscp that it corresponds to.
|
|
|
|
*/
|
|
|
|
struct uha_mscp *
|
|
|
|
uha_mscp_phys_kv(sc, mscp_phys)
|
|
|
|
struct uha_softc *sc;
|
|
|
|
u_long mscp_phys;
|
|
|
|
{
|
|
|
|
int hashnum = MSCP_HASH(mscp_phys);
|
|
|
|
struct uha_mscp *mscp = sc->sc_mscphash[hashnum];
|
|
|
|
|
|
|
|
while (mscp) {
|
|
|
|
if (mscp->hashkey == mscp_phys)
|
|
|
|
break;
|
|
|
|
mscp = mscp->nexthash;
|
|
|
|
}
|
|
|
|
return (mscp);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We have a mscp which has been processed by the adaptor, now we look to see
|
|
|
|
* how the operation went.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
uha_done(sc, mscp)
|
|
|
|
struct uha_softc *sc;
|
|
|
|
struct uha_mscp *mscp;
|
|
|
|
{
|
1997-06-07 03:30:02 +04:00
|
|
|
bus_dma_tag_t dmat = sc->sc_dmat;
|
1997-08-27 15:22:52 +04:00
|
|
|
struct scsipi_sense_data *s1, *s2;
|
|
|
|
struct scsipi_xfer *xs = mscp->xs;
|
1996-09-01 00:26:48 +04:00
|
|
|
|
|
|
|
SC_DEBUG(xs->sc_link, SDEV_DB2, ("uha_done\n"));
|
1997-06-07 03:30:02 +04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* If we were a data transfer, unload the map that described
|
|
|
|
* the data buffer.
|
|
|
|
*/
|
|
|
|
if (xs->datalen) {
|
1998-02-04 08:12:46 +03:00
|
|
|
bus_dmamap_sync(dmat, mscp->dmamap_xfer, 0,
|
|
|
|
mscp->dmamap_xfer->dm_mapsize,
|
1997-06-07 03:30:02 +04:00
|
|
|
(xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD :
|
|
|
|
BUS_DMASYNC_POSTWRITE);
|
|
|
|
bus_dmamap_unload(dmat, mscp->dmamap_xfer);
|
|
|
|
}
|
|
|
|
|
1996-09-01 00:26:48 +04:00
|
|
|
/*
|
|
|
|
* Otherwise, put the results of the operation
|
|
|
|
* into the xfer and call whoever started it
|
|
|
|
*/
|
|
|
|
if ((mscp->flags & MSCP_ALLOC) == 0) {
|
1996-10-13 05:37:04 +04:00
|
|
|
printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname);
|
1996-09-01 00:26:48 +04:00
|
|
|
Debugger();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if (xs->error == XS_NOERROR) {
|
|
|
|
if (mscp->host_stat != UHA_NO_ERR) {
|
|
|
|
switch (mscp->host_stat) {
|
|
|
|
case UHA_SBUS_TIMEOUT: /* No response */
|
|
|
|
xs->error = XS_SELTIMEOUT;
|
|
|
|
break;
|
|
|
|
default: /* Other scsi protocol messes */
|
1996-10-13 05:37:04 +04:00
|
|
|
printf("%s: host_stat %x\n",
|
1996-09-01 00:26:48 +04:00
|
|
|
sc->sc_dev.dv_xname, mscp->host_stat);
|
|
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
|
|
}
|
|
|
|
} else if (mscp->target_stat != SCSI_OK) {
|
|
|
|
switch (mscp->target_stat) {
|
|
|
|
case SCSI_CHECK:
|
|
|
|
s1 = &mscp->mscp_sense;
|
1997-08-27 15:22:52 +04:00
|
|
|
s2 = &xs->sense.scsi_sense;
|
1996-09-01 00:26:48 +04:00
|
|
|
*s2 = *s1;
|
|
|
|
xs->error = XS_SENSE;
|
|
|
|
break;
|
|
|
|
case SCSI_BUSY:
|
|
|
|
xs->error = XS_BUSY;
|
|
|
|
break;
|
|
|
|
default:
|
1996-10-13 05:37:04 +04:00
|
|
|
printf("%s: target_stat %x\n",
|
1996-09-01 00:26:48 +04:00
|
|
|
sc->sc_dev.dv_xname, mscp->target_stat);
|
|
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
|
|
}
|
|
|
|
} else
|
|
|
|
xs->resid = 0;
|
|
|
|
}
|
|
|
|
uha_free_mscp(sc, mscp);
|
|
|
|
xs->flags |= ITSDONE;
|
1997-08-27 15:22:52 +04:00
|
|
|
scsipi_done(xs);
|
1997-11-04 08:58:22 +03:00
|
|
|
|
|
|
|
/*
|
|
|
|
* If there are queue entries in the software queue, try to
|
|
|
|
* run the first one. We should be more or less guaranteed
|
|
|
|
* to succeed, since we just freed an MSCP.
|
|
|
|
*
|
|
|
|
* NOTE: uha_scsi_cmd() relies on our calling it with
|
|
|
|
* the first entry in the queue.
|
|
|
|
*/
|
|
|
|
if ((xs = sc->sc_queue.lh_first) != NULL)
|
|
|
|
(void) uha_scsi_cmd(xs);
|
1996-09-01 00:26:48 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
uhaminphys(bp)
|
|
|
|
struct buf *bp;
|
|
|
|
{
|
|
|
|
|
1997-06-07 03:30:02 +04:00
|
|
|
if (bp->b_bcount > UHA_MAXXFER)
|
|
|
|
bp->b_bcount = UHA_MAXXFER;
|
1996-09-01 00:26:48 +04:00
|
|
|
minphys(bp);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* start a scsi operation given the command and the data address. Also
|
|
|
|
* needs the unit, target and lu.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
uha_scsi_cmd(xs)
|
1997-08-27 15:22:52 +04:00
|
|
|
struct scsipi_xfer *xs;
|
1996-09-01 00:26:48 +04:00
|
|
|
{
|
1997-08-27 15:22:52 +04:00
|
|
|
struct scsipi_link *sc_link = xs->sc_link;
|
1996-09-01 00:26:48 +04:00
|
|
|
struct uha_softc *sc = sc_link->adapter_softc;
|
1997-06-07 03:30:02 +04:00
|
|
|
bus_dma_tag_t dmat = sc->sc_dmat;
|
1996-09-01 00:26:48 +04:00
|
|
|
struct uha_mscp *mscp;
|
|
|
|
struct uha_dma_seg *sg;
|
1997-06-07 03:30:02 +04:00
|
|
|
int error, seg, flags, s;
|
1997-11-04 08:58:22 +03:00
|
|
|
int fromqueue = 0, dontqueue = 0;
|
1996-09-01 00:26:48 +04:00
|
|
|
|
|
|
|
SC_DEBUG(sc_link, SDEV_DB2, ("uha_scsi_cmd\n"));
|
1997-11-04 08:58:22 +03:00
|
|
|
|
|
|
|
s = splbio(); /* protect the queue */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we're running the queue from bha_done(), we've been
|
|
|
|
* called with the first queue entry as our argument.
|
|
|
|
*/
|
|
|
|
if (xs == sc->sc_queue.lh_first) {
|
|
|
|
xs = uha_dequeue(sc);
|
|
|
|
fromqueue = 1;
|
|
|
|
goto get_mscp;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Polled requests can't be queued for later. */
|
|
|
|
dontqueue = xs->flags & SCSI_POLL;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If there are jobs in the queue, run them first.
|
|
|
|
*/
|
|
|
|
if (sc->sc_queue.lh_first != NULL) {
|
|
|
|
/*
|
|
|
|
* If we can't queue, we have to abort, since
|
|
|
|
* we have to preserve order.
|
|
|
|
*/
|
|
|
|
if (dontqueue) {
|
|
|
|
splx(s);
|
|
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
|
|
return (TRY_AGAIN_LATER);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Swap with the first queue entry.
|
|
|
|
*/
|
|
|
|
uha_enqueue(sc, xs, 0);
|
|
|
|
xs = uha_dequeue(sc);
|
|
|
|
fromqueue = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
get_mscp:
|
1996-09-01 00:26:48 +04:00
|
|
|
/*
|
|
|
|
* get a mscp (mbox-out) to use. If the transfer
|
|
|
|
* is from a buf (possibly from interrupt time)
|
|
|
|
* then we can't allow it to sleep
|
|
|
|
*/
|
|
|
|
flags = xs->flags;
|
|
|
|
if ((mscp = uha_get_mscp(sc, flags)) == NULL) {
|
1997-11-04 08:58:22 +03:00
|
|
|
/*
|
|
|
|
* If we can't queue, we lose.
|
|
|
|
*/
|
|
|
|
if (dontqueue) {
|
|
|
|
splx(s);
|
|
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
|
|
return (TRY_AGAIN_LATER);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Stuff ourselves into the queue, in front
|
|
|
|
* if we came off in the first place.
|
|
|
|
*/
|
|
|
|
uha_enqueue(sc, xs, fromqueue);
|
|
|
|
splx(s);
|
|
|
|
return (SUCCESSFULLY_QUEUED);
|
1996-09-01 00:26:48 +04:00
|
|
|
}
|
1997-11-04 08:58:22 +03:00
|
|
|
|
|
|
|
splx(s); /* done playing with the queue */
|
|
|
|
|
1996-09-01 00:26:48 +04:00
|
|
|
mscp->xs = xs;
|
|
|
|
mscp->timeout = xs->timeout;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Put all the arguments for the xfer in the mscp
|
|
|
|
*/
|
|
|
|
if (flags & SCSI_RESET) {
|
|
|
|
mscp->opcode = UHA_SDR;
|
|
|
|
mscp->ca = 0x01;
|
|
|
|
} else {
|
|
|
|
mscp->opcode = UHA_TSP;
|
|
|
|
/* XXX Not for tapes. */
|
|
|
|
mscp->ca = 0x01;
|
|
|
|
bcopy(xs->cmd, &mscp->scsi_cmd, mscp->scsi_cmd_length);
|
|
|
|
}
|
|
|
|
mscp->xdir = UHA_SDET;
|
|
|
|
mscp->dcn = 0x00;
|
|
|
|
mscp->chan = 0x00;
|
1997-08-27 15:22:52 +04:00
|
|
|
mscp->target = sc_link->scsipi_scsi.target;
|
|
|
|
mscp->lun = sc_link->scsipi_scsi.lun;
|
1996-09-01 00:26:48 +04:00
|
|
|
mscp->scsi_cmd_length = xs->cmdlen;
|
1997-06-07 03:30:02 +04:00
|
|
|
mscp->sense_ptr = mscp->dmamap_self->dm_segs[0].ds_addr +
|
|
|
|
offsetof(struct uha_mscp, mscp_sense);
|
1996-09-01 00:26:48 +04:00
|
|
|
mscp->req_sense_length = sizeof(mscp->mscp_sense);
|
|
|
|
mscp->host_stat = 0x00;
|
|
|
|
mscp->target_stat = 0x00;
|
|
|
|
|
|
|
|
if (xs->datalen) {
|
|
|
|
sg = mscp->uha_dma;
|
|
|
|
seg = 0;
|
|
|
|
#ifdef TFS
|
|
|
|
if (flags & SCSI_DATA_UIO) {
|
1997-06-07 03:30:02 +04:00
|
|
|
error = bus_dmamap_load_uio(dmat,
|
|
|
|
mscp->dmamap_xfer, (struct uio *)xs->data,
|
|
|
|
(flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT :
|
|
|
|
BUS_DMA_WAITOK);
|
1996-09-01 00:26:48 +04:00
|
|
|
} else
|
|
|
|
#endif /*TFS */
|
|
|
|
{
|
1997-06-07 03:30:02 +04:00
|
|
|
error = bus_dmamap_load(dmat,
|
|
|
|
mscp->dmamap_xfer, xs->data, xs->datalen, NULL,
|
|
|
|
(flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT :
|
|
|
|
BUS_DMA_WAITOK);
|
1996-09-01 00:26:48 +04:00
|
|
|
}
|
1997-06-07 03:30:02 +04:00
|
|
|
|
|
|
|
if (error) {
|
|
|
|
if (error == EFBIG) {
|
|
|
|
printf("%s: uha_scsi_cmd, more than %d"
|
|
|
|
" dma segments\n",
|
|
|
|
sc->sc_dev.dv_xname, UHA_NSEG);
|
|
|
|
} else {
|
|
|
|
printf("%s: uha_scsi_cmd, error %d loading"
|
|
|
|
" dma map\n",
|
|
|
|
sc->sc_dev.dv_xname, error);
|
|
|
|
}
|
1996-09-01 00:26:48 +04:00
|
|
|
goto bad;
|
|
|
|
}
|
1997-06-07 03:30:02 +04:00
|
|
|
|
1998-02-04 08:12:46 +03:00
|
|
|
bus_dmamap_sync(dmat, mscp->dmamap_xfer, 0,
|
|
|
|
mscp->dmamap_xfer->dm_mapsize,
|
1997-06-07 03:30:02 +04:00
|
|
|
(flags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD :
|
|
|
|
BUS_DMASYNC_PREWRITE);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Load the hardware scatter/gather map with the
|
|
|
|
* contents of the DMA map.
|
|
|
|
*/
|
|
|
|
for (seg = 0; seg < mscp->dmamap_xfer->dm_nsegs; seg++) {
|
|
|
|
mscp->uha_dma[seg].seg_addr =
|
|
|
|
mscp->dmamap_xfer->dm_segs[seg].ds_addr;
|
|
|
|
mscp->uha_dma[seg].seg_len =
|
|
|
|
mscp->dmamap_xfer->dm_segs[seg].ds_len;
|
|
|
|
}
|
|
|
|
|
|
|
|
mscp->data_addr = mscp->dmamap_self->dm_segs[0].ds_addr +
|
|
|
|
offsetof(struct uha_mscp, uha_dma);
|
1996-09-01 00:26:48 +04:00
|
|
|
mscp->data_length = xs->datalen;
|
|
|
|
mscp->sgth = 0x01;
|
|
|
|
mscp->sg_num = seg;
|
|
|
|
} else { /* No data xfer, use non S/G values */
|
|
|
|
mscp->data_addr = (physaddr)0;
|
|
|
|
mscp->data_length = 0;
|
|
|
|
mscp->sgth = 0x00;
|
|
|
|
mscp->sg_num = 0;
|
|
|
|
}
|
|
|
|
mscp->link_id = 0;
|
|
|
|
mscp->link_addr = (physaddr)0;
|
|
|
|
|
|
|
|
s = splbio();
|
|
|
|
(sc->start_mbox)(sc, mscp);
|
|
|
|
splx(s);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Usually return SUCCESSFULLY QUEUED
|
|
|
|
*/
|
|
|
|
if ((flags & SCSI_POLL) == 0)
|
|
|
|
return (SUCCESSFULLY_QUEUED);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we can't use interrupts, poll on completion
|
|
|
|
*/
|
|
|
|
if ((sc->poll)(sc, xs, mscp->timeout)) {
|
|
|
|
uha_timeout(mscp);
|
|
|
|
if ((sc->poll)(sc, xs, mscp->timeout))
|
|
|
|
uha_timeout(mscp);
|
|
|
|
}
|
|
|
|
return (COMPLETE);
|
|
|
|
|
|
|
|
bad:
|
|
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
|
|
uha_free_mscp(sc, mscp);
|
|
|
|
return (COMPLETE);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
uha_timeout(arg)
|
|
|
|
void *arg;
|
|
|
|
{
|
|
|
|
struct uha_mscp *mscp = arg;
|
1997-08-27 15:22:52 +04:00
|
|
|
struct scsipi_xfer *xs = mscp->xs;
|
|
|
|
struct scsipi_link *sc_link = xs->sc_link;
|
1996-09-01 00:26:48 +04:00
|
|
|
struct uha_softc *sc = sc_link->adapter_softc;
|
|
|
|
int s;
|
|
|
|
|
1997-08-27 15:22:52 +04:00
|
|
|
scsi_print_addr(sc_link);
|
1996-10-13 05:37:04 +04:00
|
|
|
printf("timed out");
|
1996-09-01 00:26:48 +04:00
|
|
|
|
|
|
|
s = splbio();
|
|
|
|
|
|
|
|
if (mscp->flags & MSCP_ABORT) {
|
|
|
|
/* abort timed out */
|
1996-10-13 05:37:04 +04:00
|
|
|
printf(" AGAIN\n");
|
1996-09-01 00:26:48 +04:00
|
|
|
/* XXX Must reset! */
|
|
|
|
} else {
|
|
|
|
/* abort the operation that has timed out */
|
1996-10-13 05:37:04 +04:00
|
|
|
printf("\n");
|
1996-09-01 00:26:48 +04:00
|
|
|
mscp->xs->error = XS_TIMEOUT;
|
|
|
|
mscp->timeout = UHA_ABORT_TIMEOUT;
|
|
|
|
mscp->flags |= MSCP_ABORT;
|
|
|
|
(sc->start_mbox)(sc, mscp);
|
|
|
|
}
|
|
|
|
|
|
|
|
splx(s);
|
|
|
|
}
|