(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.
* Add prototype for ncr_ready.
* Add ncr_wait_not_req function from Ian Dall:
The ncr_wait_not_req business is to avoid a potential race.
When the pseudo DMA finishes, the target may not have
lowered REQ yet. If we just charge ahead, we eventually test
for phase when REQ is high. However, if REQ has not yet gone
low for the last byte transferred, this will be the wrong
phase. This is taken from the dp8490 application notes. The
last ACK is not deasserted until the dma is completed.
Deasserting the last ACK should be delayed until the last
REQ is deasserted. I am not sure if there are ever devices
this slow, but I believe the code is "more correct".
* intr_establish now takes *two* ipls. One at which the handler should run,
and one in which the interrupt should get blocked.
* Make transfersize configurable for input and output. Default the input
transfersize to 128 bytes. That way interrupts won't be disabled for more
then about 128us-256us for slow targets. This is necessary to prevent scn
fifo overruns. Cleanup the pdma code. Thank's to Ian Dall for these
changes.
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).
- split softc size and match/attach out from cfdriver into
a new struct cfattach.
- new "attach" directive for files.*. May specify the name of
the cfattach structure, so that devices may be easily attached
to parents with different autoconfiguration semantics.
* conf/DEFAULT: new file, default install kernel
* conf/INSTALL: +MSDOSFS, +NO_INLINE_SPLX, +RD_SIZE=2mb, +scn4/5
* conf/KLONDIKE: cosmetic changes
* conf/STEELHEAD: cosmetic changes
* conf/files.pc532: rd got a file of it's own
* dev/lpt.c: changes to support lower interrupt latency, packet input/output
is now done at spl0
* dev/ncr.c: changes to support the most recent atari version of the ncr5380
driver
* dev/ncr5380.c, dev/ncr5380reg.h: upgraded to most recent atari version,
memcpy -> bcopy.
* dev/rd.c: ramdisk driver
* dev/scn.c: by patching scndefaultrate, the kernel's default baud rate can
be changed with gdb
* include/psl.h: struct iv now protected by !LOCORE && _KERNEL
inlining of splx can be prevented with new kernel option NO_INLINE_SPLX
splx_di is like splx but leaves processor interrupts disabled
* pc532/autoconf.c: cosmetic changes
* pc532/conf.c: with rd entries
* pc532/intr.c: changes to support splx_di
* pc532/locore.s: ramdisk is no longer initialized
not splx, but rett is now used to reenable CPU interrupts when leaving the
interrupt service routine. This is necessary to prevent recursive interrupts.
* pc532/sys_machdep.c: memcpy -> bcopy
* pc532/mem.c: moved ramdisk to dev/rd.c
* stand/Makefile: boot is now loaded at 0x3eb800 instead of 0x363800
Use current form of libsa and libkern.
* stand/inflate.c: emit twiddle every 8k and not every 1k
* stand/rd.c: ramdisk starts at 0x288000
