Remove NKMEMCLUSTERS, it is no longer define or used.
locores.s:
Fix comment on PTDpde and APTDpde to be pde instead of pte
Add new equation for calculating location of Sysmap
Remove Bill's old #ifdef garbage for counting up memory,
that stuff will never be made to work and was just cluttering
up the file.
Add code that places the PTD, page table pages, and kernel
stack below the 640k ISA hole if there is room for it, otherwise
put this stuff all at 1MB. This fixes the 28K bogusity in
the boot blocks, that can now go away!
Fix the caclulation of where first is to be dependent on
NKPDE so that we can skip over the above mentioned areas.
The 28K thing is now 44K in size due to the increase in
kernel virtual memory space, but since we no longer have
to worry about that this is no big deal.
Use if NNPX > 0 instead of ifdef NPX for floating point code.
machdep.c
Change the calculation of for the buffer cache to be
20% of all memory above 2MB and add back the upper limit
of 2/5's of the VM_KMEM_SIZE so that we do not eat ALL
of the kernel memory space on large memory machines, note
that this will not even come into effect unless you have
more than 32MB. The current buffer cache limit is 6.7MB
due to this caclulation.
It seems that we where erroniously allocating bufpages pages
for buffer_map. buffer_map is UNUSED in this implementation
of the buffer cache, but since the map is referenced in
several if statements a quick fix was to simply allocate
1 vm page (but no real memory) to it.
pmap.h
Remove rcsid, don't want them in the kernel files!
Removed some cruft inside an #ifdef DEBUGx that caused
compiler errors if you where compiling this for debug.
Use the #defines for PD_SHIFT and PG_SHIFT in place of
constants.
trap.c:
Remove patch kit header and rcsid, fix $Id$.
Now include "npx.h" and use NNPX for controlling the
floating point code.
Remove a now completly invalid check for a maximum virtual
address, the virtual address now ends at 0xFFFFFFFF so
there is no more MAX!! (Thanks David, I completly missed
that one!)
vm_machdep.c
Remove patch kit header and rcsid, fix $Id$.
Now include "npx.h" and use NNPX for controlling the
floating point code.
Replace several 0xFE00000 constants with KERNBASE
Mark the fact that PGSHIFT and PDRSHIFT are really the same as
PG_SHIFT and PD_SHIFT, these should be collapsed some day soon.
Document that KERNBASE should really be KPTDPTDI << PDRSHIFT, for
now leave it as the constant 0xFE000000 until I make a seperate
common header file for this stuff (vmaddresses.h?)
Remove NKMEMCLUSTERS define, it was only being used to define
VM_KMEM_SIZE, so why have all the indirection. Besides who wants
to work in CLBYTE sizes chuncks.
pmap.h:
Fix $Id$ and some other minor format clean ups.
Remove the XXX comment about NKPDE, since it now has the correct value
of 7.
Remove unused LASTPTDI and move the APTD into the very end of memory to
free up 4MB of kernel virtual address space.
Remove unused RSVDPTDI and free up 12MB of kernel virtual address space.
vmparam.h
Fix $Id$.
Increase SHMMAXPGS to 512 (2MB) now that there is room for it to be
bigger. The XXX comment stays until the kernel moves down in memory
to free up enough space to use the proper default of 4MB.
VM_KMEM_SIZE is now a direct constant stating the size of the kernel
malloc region. Increased the value from 3MB to 16MB.
then use that information to fix the enhancemode features of the
1542C/CF boards by turning them off.
When doing this I found that the Buslogic 545S does NOT properly
mimic the 1542 families AHA_INQUIRE command. It only returns 1
byte of information, when the adaptec manual clearly states that 4
bytes are to be returned. I added a printf that explains the error
when we see a 545S for now, I tried to come up with a better solution,
but it involved to much work for now.
Bruce Evans had limited the kernel virtual address space to not include the
last 4MB since it was not being used. Other changes are being made that will
reloate the Alternate Page Directory Table (APDT) into this area so the limit
is being fixed to be the last virtual address. (Infact with this patch you
can now do that relocation)
line of Makefile.i386. Fixes the extra rule that gmake complains about
for machdep.o. This fix is from Joans 0lsson.
Rework the depends and rules for assym.s and genassym so that we now use
the .depend rule for genassym.o such that if you change any header files
that are included by genassym.c the right things happen. This is probably
what has caused more bad kernel builds than any other thing in the
Makefile.i386!
other bio type devices.
Add mcd0 (mitsumi cd rom driver), to bad that GENERICBT is to large,
otherwise I could add this driver to it too.
--- 72,77 ----
Removed patch kit headers and rcsid strings, add $Id$.
isa.c:
Removed old #ifdef notyet isa_configure code, since it will never be
used, and I have done 90% of what it attempted to.
Add conflict checking code that searchs back through the devtab's looking
for any device that has already been found that may conflict with what
we are about to probe. Checks are mode for I/O address, memory address,
IRQ, and DRQ. This should stop the screwing up of any device that has
alread been found by other device probes.
Print out messages when we are not going to probe a device due to
a conflict so the user knows WHY something was not found. For example:
aha0 not probed due to irq conflict with ahb0 at 11
Now print out a message when a device is not found so the user knows
that it was probed for, but could not be found. For example:
ed1 not found at 0x320
For devices that have I/O address < 0x100 say that they are on the
motherboard, not on isa! The 0x100 magic number is per ISA spec. It
may seem funny that pc0 and sc0 report as being on the motherboard, but
this is due to the fact that the I/O address used is that of the keyboard
controller which IS on the motherboard. We really need to split the
keyboard probe from the display probe. It is completly legal to build
a pc with out one or the other, or even with out both!
npx.c:
Return -1 from the probe routine if we are using the Emulator so
that the i/o addresses are not printed, this is the same trick used
for 486's.
Do not print the ``Errors reported via Exception 16'', and
``Errors reported via IRQ 13'' messages any more, since these just lead
to more user confusion that anything. It still prints the message
``Error reporting broken, using 387 emulator'' so that the person is
aware that there mother board is ill.
to do this as I have changed to using PDTI's as the bases for the vm
system layout.
Eliminate constants SYSPDROFF and SYSPDREND, now use NKPTE to control the size
of the kernel virtual space.
Eliminate constant PDRPDROFF, now use PDTDTPI to control location of PTD,
PTDmap and PTDpde
Eliminate constant APDRPDROFF, now use APTDPTDI to control location of APTD,
APTDmap and APTDpde.
Still need to fix Sysmap location (it is still a constant).
.globl statements are now consistent with respect to <comma><space>, the
<space> being removed from all .globl statements.
Document the fillkpt macro as to what registers control what.
Fix some comments that went past column 80, and clean/line some others up.
Remove constand for _Crtat, now use KERNBASE+constant, this still needs work.
Replace constants for offsets of sigcode parameters with symbolic names
from assym.s
Mark the sigreturn() call with XXX since we use the hardcoded constant
for the system call number, this is bogus and should be a #define or
something some place!
The kernel before and after this change was verified with cmp, not one
byte changed. These are all cosmetic clean up changes that makes the
code more correct and easier to move the kernels virtual address space
and size.
Cleaned up tabs vs spaces after #define to make file consistent.
Removed now unused definitions of I386_PAGE_SIZE and I386_PDR_SIZE
Note That these two where unused and had the wrong values anyway!
Changed I386_KPDES to NKPDE
Changed I386_UPDES to NUPDE
Redid constant assignments of *PTDI's to be sizeable and relative.
> code. As this memcpy generation is done by the compiler it doesn't
> work to have memcpy a macro. Instead I made it a static function that
> calls bcopy.
Okay, I tracked down the d*mn thing that is causing the memcpy to be
emmitted by gcc2. In the following patch is a fix to eliminate the
one place that was causing gcc to do the memcpy in function ie_readframe
for the ie_recv_frame_desc rfd = *(ie->rframes[num]) structure copy.
I also fixed the code so that the NS (XNS) support would compile with
out error and removed the cruft #define ns_* stuff from the softc
structures (I did this a while back for all the other either drivers)
Removed the $Log$ and all of the old log stuff, that is all kept in
the cvs tree, no need to duplicate it in the file... I'll copy it
into my commit message so that it is all retained, except the
revision numbers are going to get screwed up.
It now compiles cleanly under my LINT kernel...
> I have not yet tested this on the AT&T fiver cards yet. But, Wollman
> has used it on various other AT&T cards. I'm pretty sure Terry also
> uses this driver.
$Log$ stuff from Garretts original file
* $Log$
* Revision 1.32 1993/06/20 15:56:15 wollman
* Fixed warning message.
*
* Revision 1.31 93/06/20 15:52:28 wollman
* More compilation lint.
*
* Revision 1.30 93/06/20 15:48:16 wollman
* Commented all the rest of the cast-qual warnings. Might be
* fixed someday by changing the prototypes of bcopy(), bzero(), etc.
*
* Revision 1.29 93/06/20 15:40:13 wollman
* Started fixing some of the cast-qual warnings (most just commented).
*
* Revision 1.28 93/06/12 20:39:14 wollman
* Changed definition of MK_24 to silence -Wcast-qual.
*
* Revision 1.27 93/06/08 17:05:57 wollman
* Attach routine now returns void.
*
* Revision 1.26 93/06/08 16:31:21 wollman
* Deleted attempt to set watchdog timer, since we don't use it.
*
* Revision 1.25 93/04/16 22:15:31 wollman
* Fixed infinite loop in iestart() which would cause the transmitter
* to constantly step on the Ethernet, sending the same two packets over
* and over again. This crashes the router (really!) and makes other
* network users very angry.
*
* Revision 1.24 93/04/14 23:57:47 wollman
* Increased transmit buffer size from 1504 to 1512, just in case I don't
* understand how the MTU is used.
*
* Revision 1.23 93/04/14 23:16:19 wollman
* Fix iestart() so that it only tries to execute a command if one was
* queued up (oops...).
*
* Revision 1.22 93/04/14 23:02:16 wollman
* Unknown changes.
*
* Revision 1.21 93/04/12 18:29:33 wollman
* Added multiple transmit commands. Note that they are always queued in
* pairs (there are only two to begin with), and the I flag is only set
* on the second one. This should decrease interrupt activity somewhat.
*
* Revision 1.20 93/04/12 15:36:05 wollman
* Changed setup of config block to take into account difference between
* StarLAN (10BASE-T) and Ethernet: StarLAN is Manchester, Ethernet is NRZ.
*
* Revision 1.19 93/03/23 18:58:44 wollman
* Raised count of receive buffers from 32 to 48 and included analysis of
* memory usage in a comment near that definition.
*
* Revision 1.18 93/03/18 03:59:53 wollman
* Last try to get large TCP windows to work...
*
* Revision 1.17 93/03/18 03:54:10 wollman
* Added RNR processing as a part of receive interrupts. Hopefully this
* will make everything Just Work now.
*
* Revision 1.16 93/03/18 03:23:24 wollman
* Still having problems with RNR conditions. Basic problem: say we
* set TCP window to 16k, which is a semsible value. Then smart
* partners will blast 16k to us, of which we can fit 8k minus a bit
* into our buffers. (Need to look at that memory map..) So, we get
* an RNR interrupt. The problem is, what do we need to do in this case?
* The original code doesn't work, but it doesn't hang the system either.
*
* Revision 1.15 93/03/18 02:37:00 wollman
* Disabled watchdog timer. This gets called from a timeout somewhere,
* which is running up at softclock. This is at a higher priority than
* we are, so we can get interrupted in the process of receiving something
* by the timer expiration, which is not a nice thing to have happen.
* Question: how can we keep this functionality, but do it in sync with
* our interrupts? (Ugh!)
*
* Revision 1.14 93/03/18 02:35:46 wollman
* Fixed some more problems with receive code---it works!
*
* Revision 1.13 93/03/17 20:15:59 wollman
* Think we fixed the serious (showstopper) bugs in 1.12.
*
* Revision 1.12 93/03/15 17:45:39 wollman
* Changed filtering logic dramatically to avoid the unnecessary copyin
* for BPF or multicast routing when the packet is not for us. (We
* have to run in promiscuous mode in this case.) We still need to
* deal with the problem of allocating one mbuf per receive buffer;
* we should be able to get away with a single mbuf for all reasonable
* incoming packets, and using an mbuf cluster will help avoid unnecessary
* copying of data.
*
* Revision 1.11 93/01/30 20:23:15 wollman
* Fiddled with reset code to hopefully make it work better when the
* watchdog timer expires. Question: why does it make a difference that
* we do the same thing through ieioctl() as we were doing before. The
* old code, when iereset() was called, the receive unit would completely
* die. But, a cycle of ifconfig ie0 down ; ifconfig ie0 up' would bring
* things back to normal. So, we try to mimic that now. Grrr...
*
* Revision 1.10 93/01/29 17:26:50 wollman
* Finally fixed multicast routing/BPF mb_map full problem!!!!
* It turned out that, when we received a packet not for us, we
* would just return from ie_readframe(), *WITHOUT* freeing the
* mbuf that the packet was in. So, when running in promiscuous
* mode (i.e., multicast routing or BPF without -p), we would have
* (on our extremely busy subnet 4) a memory leak of epic proportions.
*
* We now hold on to a single mbuf chain allocated in this way,
* and the next time a packet is read, we free it. Also, the
* next time a packet is transmitted, we free it. This way,
* we never lose more than 6 mbufs total (and on average more like
* 3).
*
* Revision 1.9 93/01/23 14:22:21 wollman
* Added some StarLAN Fiber modifications from L. Jonas Olsson.
*
* Revision 1.8 93/01/23 14:02:34 wollman
* Added support for IP multicasting.
*
* Revision 1.7 92/11/21 17:51:59 wollman
* Added StarLAN Fiber version point to my driver.
*
* Revision 1.6 92/11/20 18:21:45 wollman
* Fixed documentation, made out-of-mbuf condition an error.
*
* Revision 1.5 92/11/20 18:14:02 wollman
* Move change of ethertype to host byte order so that it's after
* bpf_mtap. Hopefully, this will allow us to listen to incoming
* IP packets.
*
* Revision 1.4 92/11/20 18:11:00 wollman
* Added code to drop packets when we run out of mbufs rather than
* panicking. This should alleviate the problems observed when using tcpdump.
*
* Revision 1.3 92/11/14 14:12:40 wollman
* Added BPF support code.
*
* Revision 1.2 92/11/14 13:30:26 wollman
* Added RCS keywords
*
Subject: Re: Error reading from DAT (fwd)
Date: Mon, 11 Oct 1993 03:02:39 -40962758 (WST)
Some tapes won't do anything until you tell them to load.
Other tapes think that being asked to load is a great excuse to
make the next command return a "unit attention" (media changed) error.
Since we need to do the load, throw in a dummy instruction to cop the
error.
specifically for DEC DAT drives.
now reads:
printf("use hd(1,a)/386bsd to boot sd0 when wd0 is also installed\n");
I know the person wanted more explination, but there is little room in
the boot blocks for verbose text!
PDRSHIFT.
The SYSTEM constant that was defined in this file has been replaced
with KERNBASE from param.h.
Changed almost all # style comments to /* */ C style comments. Several
comments cleaned up so that they make a little more since.
In the comments that describe C calling conventions to assembler routines
used a comma space sequence to seperate arguments and removed the space
between the function name and the argument list.
Removed useless comments like /* clr eax */.
Changed all comma space sequences on assemble instructions to just be comma.
Removed spaces after $ operators to make the file consistent, this may need
to change again (ie: $KERNBASE should probably be $(KERNBASE), but for now
it all seems to work just fine.) This may become a problem with the C
pre-processor.
Changed several double blank lines to single blank lines that where used
to seperate the I/O routines, these routines are blocked enough that we
don't need double blank lines between them.
Changed sequence of I/O routines to be all input functions, all output
functions instead of just the opposite.
Moved the SHOW_A_LOT debug stuff to near the end of the file.
Changed two occurances of the constant 0xfff to NBPG-1.
the proper I_X86CPU in the config file the following error will occur
while building the kernel: (had to line wrap the error for this message)
../../i386/i386/machdep.c:343: #error This kernel is not configured for one \
of the supported CPUs
Remove patch kit headers, and add $Id$
This is mostly to align some more code with NetBSD.
cpu.h:
Remove the old function vs. include configuration stuff that was
ifdefed out when we went to inline functions.
Remove the define of resettodr that made it a nop, there is
already a function that makes it a nop, no need to #define one.
Remove the #defines of processor types, they are now defined
in cputypes.h, #include that file.
Add struct cpu_nameclass for support of cpu types.
frame.h:
include sys/signal.h, it will be needed in the future.
put the sigframe structure here that was in machdep.c
pcb.h:
Add multiple inclusion protection.
Add pcb_ldt and pcb_ldt_len to pcb structure, this is for the
user mode ldt.
removed patch kit headers and sccsids, add $Id$. This is a general
clean up and reallignment with NetBSD-current where possible.
genassym.c:
removed extranious include of reg.h
removed old FP_* defines that have been ifdefed out since the patch kit
removed PCB_SIGC that is not referenced anywhere
add trapframe and sigframe defines
add KERNBASE define for use in locore.s
locore.s:
include npx.h and use NNPX for turning on and off FPU
include machine/cputypes.h for the types of cpu (used in cpu_identify)
change SYSPDREND to be one higher, this is really the base of the
next area, and will be changing again next time I revise the file
Reverse the NOP defines, you now get slow NOP's by default, this
may be what is casuing us trouble with some systems. If you want
the NOPS to be null you now need to have options DUMMY_NOPS.
Now get esym from the boot blocks which don't pass it yet, and
it is not used, but this will be changing.
Move the bit_colors stuff to be in with the rest of Bruces SHOW_A_LOT
things for debugging.
Added NetBSD's CPU type probe code, we now know what type of CPU
we are running on.
Adjust kernel pde calcuation to correct for change in SYSPDREND, no
longer need the +1.
machdep.c
include npx.h and use NNPX for turning on and off FPU
include isa.h, map.h(new file), exec.h in preperation for
changes that are still in process.
Add some of the code for MACHINE_NONCONTIG that will alow us
to better map around the BIOS memory area.
Now print the version, cpu id, real memory and availiable memory
during boot.
Correct the calculation of bufpages, the code was mixing pages
and bytes, it now does the right things. Removed Bill's hack
for limiting the erronous calculation.
add the identifycpu print out code from NetBSD.
remove the definition of the sigframe struct, it belongs in
frame.h
put in printf's about syncing disks on a halt/reboot.
Change the halted message to be a little easier reading.
Clean up of the dump messages, makes the source and the output
much more readable.
Change 0,0 in several places to have spaces after the commas.
is so often reported as an error condition when it is not. We print the
size of things so for those who want to know if this happened they can
figure it out from the size information that is printed.
Change the cpu "i386" line to 2 lines:
cpu "I386_CPU"
cpu "I486_CPU"
This is so we can do real CPU classification of code.
Fix missing depend for assym.s which does depend on genassym.c
lines to match NetBSD. Added $Id$.
Added MID_MACHINE from NetBSD.
Removed definition of DELAY() for non-kernel soures.
Fixed some small english errors that had been corrected in NetBSD.
File is now identical to NetBSD's, but will be changing soon for some
of my clean up work.
machdep.o is a defined to be a target in 2 places. This was caused by
the addition of the LOAD_ADDRESS stuff. Removed the extranious target
of machdep.o.
* patch from vak@zebub.msk.su (Serge V.Vakulenko) to work around
* a hardware bug in cheap WD clone boards where the PROM checksum
* byte is always zero
it relocates it to be after the BIOS memory hole instead of right below
the 640K limit.
THANK YOU CHRIS!!!
From: <cgd@postgres.Berkeley.EDU>
Date: Wed, 29 Sep 93 18:49:58 -0700
basically, reserve a new 32k space right after firstaddr,
and put the buffer space there...
the diffs are below, and are in ~cgd/sys/i386/i386 (in machdep.c)
on freefall. i obviously can't test them, so if some of you would
look the diffs over and try them out...
Date: Thu, 30 Sep 1993 15:13:17 +0300
Description:
Old wt driver is too incomplete and buggy.
It does not support Archive controllers, BSD-like
tape ioctls, multiple tape controllers, different
tape density etc.
Fix:
This driver is a replacement of the old one.
It was not tested on different controllers, though.
This is the streamer tape driver for 386bsd and FreeBSD,
which supports Wangtek and Archive controllers.
It was developed as a replacement of the old Wangtek
tape driver from CMU.
In comparison with the CMU driver, this version has the following enhancements:
1) Support for Archive SC402 and SC499 tape controllers added.
2) Support for up to three tape controllers on the same machine.
3) Support for BSD-style ioctls MTIOCGET, MTIOCTOP.
Mt command now works adequately with this driver.
4) Asynchronous REWIND and FSF operations, close() will not wait
until they finish. The next open() will wait for it instead.
5) Use of WTQICMD ioctl is limited to ERASE and RETENS operations.
This prevents the user from locking the tape driver by strange
tape operations.
6) Tape density switching added.
7) The status of the process, blocked on the tape operation,
is displayed at the WCHAN column of the `ps' command as:
wtread reading data from the tape
wtwrite writing data to the tape
wtrfm reading the tape marker
wtwfm writing the tape marker
wtrew rewinding the tape
wterase doing WTQICMD ERASE operation
wtretens doing WTQICMD RETENS operation
wtorew doing MTIOCTOP REW/OFFL operation
wtorfm doing MTIOCTOP FSF operation
wtowfm doing MTIOCTOP WEOF operation
Block interface (writing blocks less than 2048 bytes) is not functioning
pwoperly. Use raw interface instead.
* Added software NIC reset in NE probe to work around a problem
* with some NE boards where the 8390 doesn't reset properly on
* power-up. Remove initialization of IMR/ISR in the NE probe
* because this is inherent in the reset.
* added no multi-buffer override for 3c503
*
* Revision 2.1 93/09/29 12:32:12 davidg
* changed multi-buffer count for 16bit 3c503's from 5 to 2 after
* noticing that the transmitter becomes idle because of so many
* packets to load.
*
* Revision 2.0 93/09/29 00:00:19 davidg
* many changes, rewrites, additions, etc. Now supports the
* NE1000, NE2000, WD8003, WD8013, 3C503, 16bit 3C503, and
* a variety of similar clones. 16bit 3c503 now does multi
* transmit buffers. Nearly every part of the driver has
* changed in some way since rev 1.30.
Date: Wed, 29 Sep 1993 01:54:53 +0300
To bring this error try to make two swap partitons on one disk:
one of the partitions will be not recognized.
Fix is simple: set uninitialized val variable.
Date: Tue, 28 Sep 1993 09:03:13 +0100 (MET)
The only place I found with a printf("status %x") is in /sys/i386/isa/lpt.c,
and looks much like a left-over debugging printout...
And it was... I changed it to an lprintf (which is defined if debuggin is on)
Rod
Added STRIP=, DBSYM=, and LOAD_ADDRESS?=
Now use LOAD_ADDRESS for linking kernel and for dbsym, added strip -x to
cut kernel size.
Added machde.o: dependency, this will be needed in the future, and for
now it does not hurt anyone.
Cleaned out conf.o: dependency, mkdep does the right things. Same for
param.c:
This is really a Merge in of NetBSD's Makefile.i386, here is the relevant
rlog info:
----------------------------
revision 1.27
date: 1993/08/27 23:58:20; author: brezak; state: Exp; lines: +2 -2
Need LOAD_ADDRESS for depend pass.
----------------------------
revision 1.25
date: 1993/07/19 16:52:16; author: mycroft; state: Exp; lines: +3 -3
Add ${DEBUG} to CFLAGS and -f to dbsym.
----------------------------
revision 1.22
date: 1993/07/18 10:08:22; author: mycroft; state: Exp; lines: +5 -6
Change to work with new config stuff for specifying load address.
----------------------------
revision 1.20
date: 1993/07/18 09:47:40; author: mycroft; state: Exp; lines: +6 -5
Use new -T option to dbsym.
----------------------------
revision 1.17
date: 1993/07/11 08:42:22; author: cgd; state: Exp; lines: +2 -2
don't ignore errors from dbsym... it might say that, e.g. there's
not enough symbol space!
----------------------------
revision 1.14
date: 1993/06/06 23:29:03; author: cgd; state: Exp; lines: +2 -2
make conf.o actually depend on conf.c...
----------------------------
revision 1.8
date: 1993/04/29 03:27:39; author: cgd; state: Exp; lines: +5 -10
use ed instead of ex. the script to use is identical, and we might
want to switch back to using ex when our ex supports -.
----------------------------
revision 1.5
date: 1993/03/24 18:48:57; author: cgd; state: Exp; lines: +1 -1
now use absolute path for dbsym
----------------------------
Date: Sun, 12 Sep 1993 18:19:05 -0500
This will allow you to compile and run a freebsd kernel with shared
memory support. I haven't tested the shm*() calls yet.
You run out of page table descriptors if you specify 4Mb of sharable
memory (SHMMAXPGS=1024). I don't know what the limit is, but
SHMMAXPGS=64 works. Rich
Date: Thu, 16 Sep 93 01:35:10 +1000
Julian writes:
>In fact DEVIDLE and FINDWORK ended up being basically equivalent.
>the bit I wonder about, is the returning of 0.. What (other than
>another request from somewhere else in the kernel) is going to start
>work on the next item on the queue?
I think removing FINDWORK would make things clearer.
Nothing much is going to start work on the next item. However, it is
pointless to continue processing the queue for the same unready drive.
Aborting all reads and trying harder to perform all writes would be
better.
Julian writes.
> no, actually it should be:
> fdt = fd_data[FDUNIT(minor(dev))].ft;
Fixed.
From: bde@kralizec.zeta.org.au (Bruce Evans)
Date: Thu, 16 Sep 93 22:56:01 +1000
The fd driver reported the wrong cylinder/head/sector numbers after an
error (ST3 is only valid after a sense-drive command), and didn't report
fs block numbers (diskerr was not used).
There was an old problem with writes to block fd devices. Try this:
1. write protect floppy in fd0.
2. tar cf /dev/fd0a /dev/null. Repeat a few times. Later writes tend to
terminate earlier.
3. un-write protect floppy.
4. repeat step 2. The writes tend to return 0, 2048, 4096, ... and then
succeed.
This was caused by a bug in vfs__bios.c. (The bug is fixed in NetBSD's
vfs_bio.c.) fd.c sets bp->b_resid to nonzero after an error. vfs__bios.c
was not initializing bp->b_resid. This causes some writes to terminate
early (e.g., writes to block devices; see spec_write()).
Related funnies:
1. Nothing tries to write the residual bytes.
2. The wd driver sets bp->b_resid to 0 after an error, so there's no
way anything else could write the residual bytes.
3. I use the block fd device for tar because the raw device seemed to
have more bugs long ago, and because it ought to be able to handle
buffering more transparently (I don't want to have to know the
device size). But spec_write() always uses the size BLKDEV_IOSIZE
== 2048 which is too small. For disks it should use the size of
one track (rounded down to meet the next track boundary or the i/o
size). Here it would help if the DIOCGPART ioctl worked. But
DIOCGPART is not implemented for floppies, and the disk size is
ignored except for partitions of type FS_BSDFFS.
Bruce
>Date: Sat, 11 Sep 93 12:59:39 +0800
1/ fix bug where cd0a was unusable because it was compared against
the number of 2k blocks not the number of 512byte blocks.. gave
an error for all reads past 1/4 way through the disk (cd0d was ok).
2/ fix open code so that it now notices if a disk has been changed
and updates the disklabel.
3/ use the new error handling code from st.c
4/ start adding stuff to get ready for using cd_scsi_cmd from
cd_start (like is done in st and sd)
5/ more general cleanups including making dmesg report
sector size of disk.. (believe it or not SUN drives use 512 byte)
quite and works correctly. This is derived from notes in Bruce Evans
lattest patches to fd.c:
>From: bde@kralizec.zeta.org.au (Bruce Evans)
>Subject: fixes for fd driver
6. I picked up some code posted the other day to implement label ioctls.
Now `disklabel fd0' works. See a comment for how to modify conf.c.
message for Bruces changes:
>From: bde@kralizec.zeta.org.au (Bruce Evans)
>Subject: fixes for fd driver
I think I've fixed some bugs in the 0.2.4 fd driver.
1. The main cause of hangs was that there was no timeout for seeks. So
attempting i/o with no floppy in the drive hung iff a seek was required.
2. Opens of unattached drives were allowed. The kernel usually paniced
soon after due to a bad pointer.
3. Some timeout functions ran at splclock() instead of splbio(). This
may not have mattered.
4. The state machine was left in a funny state after a timeout.
5. Some function headers were new-style.
6. I picked up some code posted the other day to implement label ioctls.
Now `disklabel fd0' works. See a comment for how to modify conf.c.
>Subject: Bad bug in kbdtables.h [FreeBSD]
I found a bug in /sys/i386/isa/kbdtables.h which contain the
different keyboard layouts for syscons. This regards all tables exept
the Danish and US. When compiling the kernel with any other keymapping
than Danish or none at all (US), you get an error that 'key_map' is undefined.
This is because there is a typo in the name of the struct containing
the tables, keymap intead of key_map.
I'd like to be able to say:
options "SYMTAB_SPACE=78000" # Kernel debugger symbol table size
If this seems a reasonable interim solution for freebsd, here's the
patch.. Rich
That is because TIOCMGET was broken. Yes...this is known for some time
and no, we (Bruce and me) never posted it. Why? Simply because we choose
to post fixes when we fixed most of the bugs.
Anyway..now that the slip problems are coming, here is a fix for
correct TIOCMGET behaviour.
-Guido
Note: this should be tested first (Rich?). Tested by rgrimes
in your config file from:
device cd0
device cd1
...
device cdn
to either
device cd0
or
psuedo-device cd0
The driver now dynamically allocates all per unit dependent structs, so it
will never run out of units (okay, so now we need 32 bit device major/minor
numbers!). It will allocate unit numbers as it needs them.
1) fixed 3c503 lock-up if the thinwire cable was disconnected at boot time
2) 8013EBT boards now work (quite well!) in 16bit/16k mode
3) ED_NO_DOUBLE_BUFFERING flag now works
4) slightly higer performance (about 3%) with 16bit WD/SMC boards
5) support for WD8013WC (10BaseT) boards
Additionally, the probe code has been reorganized to be much cleaner. This
revision of the driver is 1.25. The release notes have been updated as well.
going to panic shortly after this anyway. Destroys less state, and
keeps the machine from waiting for someone to smash the return key
a few times before it panics!
data. cd_data is now malloced on a per unit basis.
Protected all if ({scsi,cd}_debug).... with #ifdef CDDEBUG to reduce the
the size of the kernel when not debugging.
Subject: Re: Some small errors in GAMMA
4. Move printf("\n"); at line 491 in "/sys/i386/isa/sio.c" to after
COM_MULTIPORT block at line 512.
From rgrimes:
The above would cause the word (multiport) with out a new line to
appear after the uart type message if you had COM_MULTIPORT enabled.
Added support of DONET({IMP,NS,ISO}) so you can now compile with options
NS and ISO, still missing some IMP code, but since the imp is old and
gone I doubt this will ever be used.
Subject: More information on "netstat -r
Date: Mon, 7 Jun 1993 11:57:33 +0100
Gentlemen,
I have been trying for some time now to get "netstat -r"
working from the 0.2.2 patchkit. I have the following solution to the
bug.
The symbol _radix_node_head needs to be added to the symbols.raw file
to enable the new routing table access. If this symbol is not present
then the old system us used which results in no routes being given. I
don't think that this justifies a patch in its own right but perhaps
could be added to a related patch sometime..
From: bde@kralizec.zeta.org.au (Bruce Evans)
This fixes several problems.
It has almost everything that is in the FreeBSD version of Aug 22.
It is missing the bug for 2 drives and still prints <> around the
drive type. It handles BADEND144 less verbosely. It does wdgetctlr()
somewhat differently from NetBSD/FreeBSD.
Date: Sun Sep 5 06:45:12 PDT 1993
From: rgrimes@cdrom.com
Fixed printf's to be correct, since Bruce used the old ones. This driver
still prints phantom wd1's on some Maxtor and other IDE drives, I have
a patch I am sending to Bruce for checking.
wd80x3 class boards can be configured to the GENERIC kernels.
Entry was:
device ed0 at isa? port 0x280 net irq 9 iomem 0xd0000 vector edintr
Is now:
device ed0 at isa? port 0x280 net irq 5 iomem 0xd8000 vector edintr
FP and we try to call the emulator when it is not compiled in.
Removed the #if defined(i486) || defined(i387) that use to call the
panic if we did not have a math emulator.
Removed an extranious include of i386/i386/math_emu.h from math_emulate.c.
you'll get to the dump code. If you don't trust this on your disk also
add option NOT_TRUSTED, that disables the dump code, but prints out what
it WOULD do it it was going to scrible on your disk.
