937a7a3ed9
This is a completely rewritten scsipi_xfer execution engine, and the associated changes to HBA drivers. Overview of changes & features: - All xfers are queued in the mid-layer, rather than doing so in an ad-hoc fashion in individual adapter drivers. - Adapter/channel resource management in the mid-layer, avoids even trying to start running an xfer if the adapter/channel doesn't have the resources. - Better communication between the mid-layer and the adapters. - Asynchronous event notification mechanism from adapter to mid-layer and peripherals. - Better peripheral queue management: freeze/thaw, sorted requeueing during recovery, etc. - Clean separation of peripherals, adapters, and adapter channels (no more scsipi_link). - Kernel thread for each scsipi_channel makes error recovery much easier (no more dealing with interrupt context when recovering from an error). - Mid-layer support for tagged queueing: commands can have the tag type set explicitly, tag IDs are allocated in the mid-layer (thus eliminating the need to use buggy tag ID allocation schemes in many adapter drivers). - support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command will be requeued, or a REQUEST SENSE will be sent as appropriate. Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge
167 lines
4.5 KiB
C
167 lines
4.5 KiB
C
/* $NetBSD: empsc.c,v 1.20 2001/04/25 17:53:07 bouyer Exp $ */
|
|
|
|
/*
|
|
|
|
* Copyright (c) 1995 Sean Riddle, Bo Najdrovsky
|
|
* Copyright (c) 1994 Michael L. Hitch
|
|
* Copyright (c) 1982, 1990 The Regents of the University of California.
|
|
* 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 the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*
|
|
*/
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/device.h>
|
|
#include <dev/scsipi/scsi_all.h>
|
|
#include <dev/scsipi/scsipi_all.h>
|
|
#include <dev/scsipi/scsiconf.h>
|
|
#include <amiga/amiga/custom.h>
|
|
#include <amiga/amiga/device.h>
|
|
#include <amiga/amiga/isr.h>
|
|
#include <amiga/dev/scireg.h>
|
|
#include <amiga/dev/scivar.h>
|
|
#include <amiga/dev/zbusvar.h>
|
|
|
|
void empscattach __P((struct device *, struct device *, void *));
|
|
int empscmatch __P((struct device *, struct cfdata *, void *));
|
|
int empsc_intr __P((void *));
|
|
|
|
#ifdef DEBUG
|
|
extern int sci_debug;
|
|
#endif
|
|
|
|
extern int sci_data_wait;
|
|
|
|
struct cfattach empsc_ca = {
|
|
sizeof(struct sci_softc), empscmatch, empscattach
|
|
};
|
|
|
|
/*
|
|
* if this is an EMPLANT board
|
|
*/
|
|
int
|
|
empscmatch(pdp, cfp, auxp)
|
|
struct device *pdp;
|
|
struct cfdata *cfp;
|
|
void *auxp;
|
|
{
|
|
struct zbus_args *zap;
|
|
|
|
zap = auxp;
|
|
|
|
/*
|
|
* Check manufacturer and product id.
|
|
*/
|
|
if (zap->manid == 2171 && ((zap->prodid == 21)||(zap->prodid==32)))
|
|
return(1);
|
|
else
|
|
return(0);
|
|
}
|
|
|
|
void
|
|
empscattach(pdp, dp, auxp)
|
|
struct device *pdp, *dp;
|
|
void *auxp;
|
|
{
|
|
volatile u_char *rp;
|
|
struct sci_softc *sc = (struct sci_softc *)dp;
|
|
struct zbus_args *zap;
|
|
struct scsipi_adapter *adapt = &sc->sc_adapter;
|
|
struct scsipi_channel *chan = &sc->sc_channel;
|
|
|
|
printf("\n");
|
|
|
|
zap = auxp;
|
|
|
|
rp = (u_char *)zap->va + 0x5000;
|
|
|
|
sc->sci_data = rp;
|
|
sc->sci_odata = rp;
|
|
sc->sci_icmd = rp + 0x10;
|
|
sc->sci_mode = rp + 0x20;
|
|
sc->sci_tcmd = rp + 0x30;
|
|
sc->sci_bus_csr = rp + 0x40;
|
|
sc->sci_sel_enb = rp + 0x40;
|
|
sc->sci_csr = rp + 0x50;
|
|
sc->sci_dma_send = rp + 0x50;
|
|
sc->sci_idata = rp + 0x60;
|
|
sc->sci_trecv = rp + 0x60;
|
|
sc->sci_iack = rp + 0x70;
|
|
sc->sci_irecv = rp + 0x70;
|
|
sc->sc_isr.isr_intr = empsc_intr;
|
|
sc->sc_isr.isr_arg = sc;
|
|
sc->sc_isr.isr_ipl = 2;
|
|
add_isr(&sc->sc_isr);
|
|
|
|
scireset(sc);
|
|
|
|
/*
|
|
* Fill in the scsipi_adapter.
|
|
*/
|
|
memset(adapt, 0, sizeof(*adapt));
|
|
adapt->adapt_dev = &sc->sc_dev;
|
|
adapt->adapt_nchannels = 1;
|
|
adapt->adapt_openings = 7;
|
|
adapt->adapt_max_periph = 1;
|
|
adapt->adapt_request = sci_scsipi_request;
|
|
adapt->adapt_minphys = sci_minphys;
|
|
|
|
/*
|
|
* Fill in the scsipi_channel.
|
|
*/
|
|
memset(chan, 0, sizeof(*chan));
|
|
chan->chan_adapter = adapt;
|
|
chan->chan_bustype = &scsi_bustype;
|
|
chan->chan_channel = 0;
|
|
chan->chan_ntargets = 8;
|
|
chan->chan_nluns = 8;
|
|
chan->chan_id = 7;
|
|
|
|
/*
|
|
* attach all scsi units on us
|
|
*/
|
|
config_found(dp, chan, scsiprint);
|
|
}
|
|
|
|
int
|
|
empsc_intr(arg)
|
|
void *arg;
|
|
{
|
|
struct sci_softc *dev = arg;
|
|
u_char stat;
|
|
|
|
if ((*dev->sci_csr & SCI_CSR_INT) == 0)
|
|
return(0);
|
|
stat = *dev->sci_iack;
|
|
/* XXXX is: something is missing here, at least a: */
|
|
return(1);
|
|
}
|