These changes add support for:
o The MI VMEbus framework on both MVME147 and MVME167.
o Enhancements to the existing MD bus_space(9) implementation.
o Most of the bus_dma(9) API.
struct scsipi_adapter; they were not used.
Add a scsipi_ioctl entry point to struct scsipi_adapter. This will be
used to issue ioctl commands to the host adapters.
Inspired by PR #6090, from Matt Jacob.
(currently only CD-ROM drives on i386). The sys/dev/scsipi system provides 2
busses to which devices can attach (scsibus and atapibus). This needed to
change some include files and structure names in the low level scsi drivers.
multi-channel driver), or to SCSI_CHANNEL_ONLY_ONE if a
single-channel driver.
(2) use scsiprint() rather than a locally-defined autoconfig print
function, and kill any locally-defined print function.
a char *, because that's what was really intended, and because
if the print function modifies the string, various things could become
unhappy (so the string should _not_ be modified).
contributed by: Steve Woodford <steve@mctavish.demon.co.uk>
this driver is based on the amiga sbic/33C93 driver. Steve has
cleaned it up and fixed lots of bugs. Note that the original driver
used features which require at least a WD33C93A (the vme147 has the
original WD33C93 chip <no 'A' suffix>). Steve has also written
the DMA routines for the 147 to get things really going. Hardware
scatter-gather DMA and sync. SCSI are not supported (yet). tested
on several disk drives and a tape drive. CD-ROM untested, but
should work.
scw