an unrelated bug report. This will make kernel startups a bit more readable
in the presence of unsupported hardware.
Information contributed by Andreas Bussjaeger.
existence of the SCSI hardware in the boards adress region.
Thanks to Oster Nerhus for the detailed bug report and to Ralph Schmidt for
the recommended probing method.
in a more elegant way, but it works as is, and we need it now.
- Add a README and Makefile for the above. Note that this directory should
NOT be added to ../Makefile's SUBDIRS.
piece of hardware into kernel virtual memory (was only a guess 'til now).
XXX Unfortunately, the hardware vendor reserves the right to change this in
future DraCo revisions. We must rethink delay() and DELAY(), at least for the
DraCo, soon.
For these CPU's, you have to use the ptest operation to search the mmu
tables in order to decide whether it is a real bus error or just a
page fault or write protection violation.
Our old code assumed user space always when calling ptest, and
erroneously assumed the BUSERR bit in the ptest output (mmusr
register) is the only indication for bus errors to check.
In fact, we have to follow a multistage decision tree to decide. 68060
CPUs are much easier to handle correctly.
clear which switches the video signal on and which off.
Make all grf_??.c (which supported it) use the same polarity of the test.
While being here, use a > test instead of implicit != to make it extensible
to darker than dark values for power managment systems.
as the Fastlane Z3, but is different enough to let the kernel crash.
Closes PR #2492 by Matthias Scheler. [thanks also to Ralph Schmidt for
confirmation of the patch]
- grf_cv.c, grf_cvreg.h, ite_cv.c: some cleanups
- grf_rh.c, grf_rhreg.h, grf_rt.c: new blank ioctl and some KNF
- grf_et.c, grf_etreg.h, ite_et.c: new graphics driver for et4000 based board
(oMniBus, Domino and Merlin)
- grfabs_cc: fix PR#2034
- grfvar.h: new grfunit for GRF_ET4000_UNIT
- scsidefs.h: no longer useful
- zbus.c: new entries for: Piccolo SD64, oMniBus, Domino and Merlin
- new fbio.h in arch/amiga/include, defining only FBIOSVIDEO
- add an IOCTL translation to arch/amiga/dev/grf.c
- add screenblank to the list of specials to build on amiga.
This should reduce the possibility of a panic when unable to allocate
a new pv_entry under low memory conditions.
Changed a couple of kmem_free() calls to kmem_free_wakeup() as in the
hp300 pmap.c.
-Wall cleanup: unused variable when M68060 not defined.
* for the M68060 part: store buffer and branch target cache aren't
enabled yet (this needs cleanup of lots of locore.s code which is a
maze of little passages, all a little different) (and it wasn't yet
tested in an accellerated Amiga, only in the DraCo).
I've included a workaround for 2 of the CPU bugs in chips with Masks
1F43G and earlier, but didn't bother to deal with the can of worms
in the [0-3]D11W chips. Be sure to get "68060 rev. 1" or more
reported at kernel startup time, or at least mention it (or the mask
revision, if available) when reporting problems.
* for the DraCo: only machines with a CIA timer.
I assigned machine id 32000+nn (0x7Dnn), where n is the machine
readable Quicklogic custom chip revision (also printed at boot
time). "Guaranteed to work" up to rev. 3, newer DraCo's aren't
guaranteed to have any CIA (we don't have a driver for the new timer
yet).
Supported are:
- MF-II keyboards on the native interface and A3000 keyboards via
the CIA.
- builtin SCSI interface (yet another instance of siop)
- CIA timer.
- Zorro II devices which don't do DMA (don't get mapped to Zorro II
address space in the DraCo)
- "local bus" devices which are autoconfigured by the boot rom
(should be all); only an Altais driver is there (looks like a Retina Z3)
Not yet supported are:
- native timer of newer machines.
- Real Time Clock.
- serial, parallel + floppy on the SuperIO chip (that is also: no mouse)
XXX You need an enhanced boot loader, which will committed in a few days.
XXX std.draco should and will go away.
device and a printable "external name" (name + unit number), thus eliminating
if_name and if_unit. Updated interface to (*if_watchdog)() and (*if_start)()
to take a struct ifnet *, rather than a unit number.
naming conflicts between bus attachments on ports that can have
multiple instances of the LANCE.
Changed struct ifnet to have a pointer to the softc of the underlying
device and a printable "external name" (name + unit number), thus eliminating
if_name and if_unit. Updated interface to (*if_watchdog)() and (*if_start)()
to take a struct ifnet *, rather than a unit number.
This removes the need to have enough chip memory to load the kernel
when booting. Kernel memory is dual-mapped (VA == 0 and VA == PA)
for enabling the MMU, and the VA == PA mapping removed after start_c()
has completed. Chip memory is still required for the /dev/reload
process.
Startup modified to work with kernel loaded directly into fast memory.
This removes the need to have enough chip memory to load the kernel
when booting. Kernel memory is dual-mapped (VA == 0 and VA == PA)
for enabling the MMU, and the VA == PA mapping removed after start_c()
has completed. Chip memory is still required for the /dev/reload
process.
loading into fastmem. This removes the requirement that the kernel fit
into chipmem.
Add a -Z flag to force loading into chip memory.
Add a -s option for compatibility with my bootblock loader.
Move the test exit to just before starting the kernel; this lets the
test mode actually load the kernel and do the version checks.
against the MMU switch code being in different locations between
the running kernel and the new kernel. Returns ENODEV if the reload
fails.
Change the error return from EFAULT to ENOEXEC when kernel_reload
gets a short write on the exec header.
Clean up the debugging code a bit and the warnings from -Wall.
Don't define ESDEBUG - it can now be set from the config file.
If the Ethernet chip gets reset during the copy of the transmit buffer,
requeue the current packet and reinitialize the controller. This recovers
from an apparent hardware bug when running on my A2000/Zeus system.
Don't seek to track 0 before checking for diskchange: if drive steps,
the diskchange flag is cleared. Just select the drive, then test for
a diskchange.
Clean up for -Wall with FDDEBUG defined, and fix a message typo.
Only call Debugger() if DDB is defined.
If the wait for reselect is interrupted and sc_nexus was NULL, only
print the debug message if DEBUG is defined.
Argh, why is a fuction from the RetinaZ2 console driver in the console
driver for the RetinaZ3 ? Fixed.
Fixed some warnings from -Wall if you don't use -DDEBUG
allow any baudrate the hardware allows, and to forbid two baudrates
(50 and 75) which the hardware does NOT support but which the old
speed conversion table pretended to support.
- Added support for multiple floppy drives
- CyberVision64:
- has now a real console mode
- another bugfix for boards with the new S3 chip
- Ariadne:
- fixed crashes with aeput (mbuf failure)
remove their 'integrate' (usually defined to be 'static') keywords.
when lance drivers are split up by attachment, more than one file will
reference the copy/zero functions (i.e. not just the file that pulls in
am7990.c... and eventually inclusion of am7990.c should go away entirely).
Amiga partition block. Print a diagnostic if the sectors/track or
number of heads differs from the RDSK values.
Fix sorting by partition offset (don't drop last partition).
Save filesystem blocksize for adosfs partitions. (Closes PR 2232)
it) looks truncated. At least the return(1) is missing, which I now add as
a first stopgap. Somebody needs to find out if anything else is missing for
these boards.
the "Fast Assembler Version of the copy loop)
- Yet another sanity check included: initialize unused receive buffers to
zero sender id; and test for sender hardware id of zero in the receiver.
Gives us better error messages in case flaky hardware causes spurious
receive interupts.
- 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.
instructions which have to be emulated by the operating system on that
chip. This code will still run on M68020, M68030 and M68040, but
might be a bit slower on those chips.
execpt without quotes. meant to be __CONCAT()ted for easy #includes
of machine-dependent headers for MI code (e.g. for the MI ISA/EISA/PCI/TC
bus code).
on the size of MI data structures that come before it in the softc.
Chip will not function properly if alignment is wrong. (as per OpenBSD)
Detected and fixed by: Chuck Cranor <chuck@ccrc.wustl.edu>
and Michael L Hitch <osymh@gemini.oscs.montana.edu>
- New metrics handling. Metrics are now kept in the new
`struct disk'. Busy time is now stored as a timeval, and
transfer count in bytes.
- Storage for disklabels is now dynamically allocated, so that
the size of the disk structure is not machine-dependent.
- Several new functions for attaching and detaching disks, and
handling metrics calculation.
Old-style instrumentation is still supported in drivers that did it before.
However, old-style instrumentation is being deprecated, and will go away
once the userland utilities are updated for the new framework.
For usage and architectural details, see the forthcoming disk(9) manual
page.
is