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/* $NetBSD: scsitest.c,v 1.2 2014/04/25 00:24:39 pooka Exp $ */
/*
* Copyright (c) 2010 Antti Kantee. 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 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.
*/
/*
* A SCSI target which is useful for debugging our scsipi driver stack.
* Currently it pretends to be a single CD.
*
* Freely add the necessary features for your tests. Just remember to
* run the atf test suite to make sure you didn't cause regressions to
* other tests.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: scsitest.c,v 1.2 2014/04/25 00:24:39 pooka Exp $");
#include <sys/param.h>
#include <sys/atomic.h>
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/fcntl.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/scsipi/scsipiconf.h>
#include <dev/scsipi/scsi_disk.h>
#include <dev/scsipi/scsipi_cd.h>
#include <dev/scsipi/scsipi_all.h>
#include <rump/rumpuser.h>
#include "scsitest.h"
int scsitest_match(device_t, cfdata_t, void *);
void scsitest_attach(device_t, device_t, void *);
struct scsitest {
struct scsipi_channel sc_channel;
struct scsipi_adapter sc_adapter;
};
CFATTACH_DECL_NEW(scsitest, sizeof(struct scsitest), scsitest_match,
scsitest_attach, NULL, NULL);
/*
* tosi.iso can be used to deliver CD requests to a host file with the
* name in USE_TOSI_ISO (yes, it's extrasimplistic).
*/
//#define USE_TOSI_ISO
#define CDBLOCKSIZE 2048
static uint32_t mycdsize = 2048;
static int isofd;
#define MYCDISO "tosi.iso"
unsigned rump_scsitest_err[RUMP_SCSITEST_MAXERROR];
static void
sense_notready(struct scsipi_xfer *xs)
{
struct scsi_sense_data *sense = &xs->sense.scsi_sense;
xs->error = XS_SENSE;
sense->response_code = 0x70;
sense->flags = SKEY_NOT_READY;
sense->asc = 0x3A;
sense->ascq = 0x00;
sense->extra_len = 6;
}
/*
* This is pretty much a CD target for now
*/
static void
scsitest_request(struct scsipi_channel *chan,
scsipi_adapter_req_t req, void *arg)
{
struct scsipi_xfer *xs = arg;
struct scsipi_generic *cmd = xs->cmd;
#ifdef USE_TOSI_ISO
int error;
#endif
if (req != ADAPTER_REQ_RUN_XFER)
return;
//show_scsipi_xs(xs);
switch (cmd->opcode) {
case SCSI_TEST_UNIT_READY:
if (isofd == -1)
sense_notready(xs);
break;
case INQUIRY: {
struct scsipi_inquiry_data *inqbuf = (void *)xs->data;
memset(inqbuf, 0, sizeof(*inqbuf));
inqbuf->device = T_CDROM;
inqbuf->dev_qual2 = SID_REMOVABLE;
strcpy(inqbuf->vendor, "RUMPHOBO");
strcpy(inqbuf->product, "It's a LIE");
strcpy(inqbuf->revision, "0.00");
break;
}
case READ_CD_CAPACITY: {
struct scsipi_read_cd_cap_data *ret = (void *)xs->data;
_lto4b(CDBLOCKSIZE, ret->length);
_lto4b(mycdsize, ret->addr);
break;
}
case READ_DISCINFO: {
struct scsipi_read_discinfo_data *ret = (void *)xs->data;
memset(ret, 0, sizeof(*ret));
break;
}
case READ_TRACKINFO: {
struct scsipi_read_trackinfo_data *ret = (void *)xs->data;
_lto4b(mycdsize, ret->track_size);
break;
}
case READ_TOC: {
struct scsipi_toc_header *ret = (void *)xs->data;
memset(ret, 0, sizeof(*ret));
break;
}
case START_STOP: {
struct scsipi_start_stop *param = (void *)cmd;
if (param->how & SSS_LOEJ) {
#ifdef USE_TOSI_ISO
rumpuser_close(isofd, &error);
#endif
isofd = -1;
}
break;
}
case SCSI_SYNCHRONIZE_CACHE_10: {
if (isofd == -1) {
if ((xs->xs_control & XS_CTL_SILENT) == 0)
atomic_inc_uint(&rump_scsitest_err
[RUMP_SCSITEST_NOISYSYNC]);
sense_notready(xs);
}
break;
}
case GET_CONFIGURATION: {
memset(xs->data, 0, sizeof(struct scsipi_get_conf_data));
break;
}
case SCSI_READ_6_COMMAND: {
#ifdef USE_TOSI_ISO
struct scsi_rw_6 *param = (void *)cmd;
printf("reading %d bytes from %d\n",
param->length * CDBLOCKSIZE,
_3btol(param->addr) * CDBLOCKSIZE);
rumpuser_pread(isofd, xs->data,
param->length * CDBLOCKSIZE,
_3btol(param->addr) * CDBLOCKSIZE,
&error);
#endif
break;
}
case SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL:
/* hardcoded for now */
break;
default:
printf("unhandled opcode 0x%x\n", cmd->opcode);
break;
}
scsipi_done(xs);
}
int
scsitest_match(device_t parent, cfdata_t match, void *aux)
{
#ifdef USE_TOSI_ISO
uint64_t fsize;
int error, ft;
if (rumpuser_getfileinfo(MYCDISO, &fsize, &ft, &error))
return 0;
if (ft != RUMPUSER_FT_REG)
return 0;
mycdsize = fsize / CDBLOCKSIZE;
if ((isofd = rumpuser_open(MYCDISO, RUMPUSER_OPEN_RDWR, &error)) == -1)
return 0;
#else
/*
* We pretend to have a medium present initially, so != -1.
*/
isofd = -2;
#endif
return 1;
}
void
scsitest_attach(device_t parent, device_t self, void *aux)
{
struct scsitest *sc = device_private(self);
aprint_naive("\n");
aprint_normal("\n");
memset(&sc->sc_adapter, 0, sizeof(sc->sc_adapter));
sc->sc_adapter.adapt_nchannels = 1;
sc->sc_adapter.adapt_request = scsitest_request;
sc->sc_adapter.adapt_minphys = minphys;
sc->sc_adapter.adapt_dev = self;
sc->sc_adapter.adapt_max_periph = 1;
sc->sc_adapter.adapt_openings = 1;
memset(&sc->sc_channel, 0, sizeof(sc->sc_channel));
sc->sc_channel.chan_bustype = &scsi_bustype;
sc->sc_channel.chan_ntargets = 2;
sc->sc_channel.chan_nluns = 1;
sc->sc_channel.chan_id = 0;
sc->sc_channel.chan_flags = SCSIPI_CHAN_NOSETTLE;
sc->sc_channel.chan_adapter = &sc->sc_adapter;
config_found_ia(self, "scsi", &sc->sc_channel, scsiprint);
}
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