int si_read(siread *q)
{
switch (q->order) {
case SS_EQ:
return si_get(q);
case SS_LT:
case SS_LTE:
case SS_GT:
case SS_GTE:
return si_range(q);
default:
break;
}
return -1;
}
/*
* Something (e.g. another driver) has called us
* with a periph and a scsi-specific ioctl to perform,
* better try. If user-level type command, we must
* still be running in the context of the calling process
*/
int
scsipi_do_ioctl(struct scsipi_periph *periph, dev_t dev, u_long cmd,
void *addr, int flag, struct lwp *l)
{
int error;
SC_DEBUG(periph, SCSIPI_DB2, ("scsipi_do_ioctl(0x%lx)\n", cmd));
if (addr == NULL)
return EINVAL;
/* Check for the safe-ness of this request. */
switch (cmd) {
case OSCIOCIDENTIFY:
case SCIOCIDENTIFY:
break;
case SCIOCCOMMAND:
if ((((scsireq_t *)addr)->flags & SCCMD_READ) == 0 &&
(flag & FWRITE) == 0)
return (EBADF);
break;
default:
if ((flag & FWRITE) == 0)
return (EBADF);
}
switch (cmd) {
case SCIOCCOMMAND: {
scsireq_t *screq = (scsireq_t *)addr;
struct scsi_ioctl *si;
int len;
si = si_get();
si->si_screq = *screq;
si->si_periph = periph;
len = screq->datalen;
if (len) {
si->si_iov.iov_base = screq->databuf;
si->si_iov.iov_len = len;
si->si_uio.uio_iov = &si->si_iov;
si->si_uio.uio_iovcnt = 1;
si->si_uio.uio_resid = len;
si->si_uio.uio_offset = 0;
si->si_uio.uio_rw =
(screq->flags & SCCMD_READ) ? UIO_READ : UIO_WRITE;
if ((flag & FKIOCTL) == 0) {
si->si_uio.uio_vmspace = l->l_proc->p_vmspace;
} else {
UIO_SETUP_SYSSPACE(&si->si_uio);
}
error = physio(scsistrategy, &si->si_bp, dev,
(screq->flags & SCCMD_READ) ? B_READ : B_WRITE,
periph->periph_channel->chan_adapter->adapt_minphys,
&si->si_uio);
} else {
/* if no data, no need to translate it.. */
si->si_bp.b_flags = 0;
si->si_bp.b_data = 0;
si->si_bp.b_bcount = 0;
si->si_bp.b_dev = dev;
si->si_bp.b_proc = l->l_proc;
scsistrategy(&si->si_bp);
error = si->si_bp.b_error;
}
*screq = si->si_screq;
si_free(si);
return (error);
}
case SCIOCDEBUG: {
int level = *((int *)addr);
SC_DEBUG(periph, SCSIPI_DB3, ("debug set to %d\n", level));
periph->periph_dbflags = 0;
if (level & 1)
periph->periph_dbflags |= SCSIPI_DB1;
if (level & 2)
periph->periph_dbflags |= SCSIPI_DB2;
if (level & 4)
periph->periph_dbflags |= SCSIPI_DB3;
if (level & 8)
periph->periph_dbflags |= SCSIPI_DB4;
return (0);
}
case SCIOCRECONFIG:
case SCIOCDECONFIG:
return (EINVAL);
case SCIOCIDENTIFY: {
struct scsi_addr *sca = (struct scsi_addr *)addr;
switch (scsipi_periph_bustype(periph)) {
case SCSIPI_BUSTYPE_SCSI:
sca->type = TYPE_SCSI;
sca->addr.scsi.scbus =
device_unit(device_parent(periph->periph_dev));
sca->addr.scsi.target = periph->periph_target;
sca->addr.scsi.lun = periph->periph_lun;
return (0);
case SCSIPI_BUSTYPE_ATAPI:
sca->type = TYPE_ATAPI;
sca->addr.atapi.atbus =
device_unit(device_parent(periph->periph_dev));
sca->addr.atapi.drive = periph->periph_target;
return (0);
}
return (ENXIO);
}
#if defined(COMPAT_12) || defined(COMPAT_FREEBSD)
/* SCIOCIDENTIFY before ATAPI staff merge */
case OSCIOCIDENTIFY: {
struct oscsi_addr *sca = (struct oscsi_addr *)addr;
switch (scsipi_periph_bustype(periph)) {
case SCSIPI_BUSTYPE_SCSI:
sca->scbus =
device_unit(device_parent(periph->periph_dev));
sca->target = periph->periph_target;
sca->lun = periph->periph_lun;
return (0);
}
return (ENODEV);
}
#endif
default:
return (ENOTTY);
}
#ifdef DIAGNOSTIC
panic("scsipi_do_ioctl: impossible");
#endif
}
