#define so that ifr_mtu accesses that. MTU shouldn't be overloaded
with ifr_metric, if only for clarity. Adding an MTU field to the
union hurts nothing (in fact, does not actually _change_ generated
code), and does improve clarity.
works) for my machines and now-nonexistent test machines. Clean up
options in existing config files so that they're more consistent. Add
more units of various pseudo-devices to several.
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.
Since linux binaries are (mostly) always compiled with gcc, look for
the gcc signature in the .comment section header: "\0 GCC: (GNU) ".
I've changed the probe order in kern/exec_elf.c to probe for linux ELF
binaries first and fall back to SVR4 binaries. This makes statically
linked binaries work for both linux and svr4. Note that gcc-compiled
svr4 binaries, still contain the operating system signature first and
then the GCC signature, so there is no conflict. Yes this is a hack.
and free some space by calling m_reclaim(). Also, log the "mb_map full"
error message (at most) every 60-seconds. The old code would log it
once over the lifetime of the system, but that's not a useful diagnostic.
(More useful is the new behaviour, which roughly indicates how often
periods of heavy load occur, without spamming the console and system
logs with messages.)
Right now, this code just panic()s (same as kmem_malloc() used to do
before, but different message), but in the future it should be modified
to try to reclaim wasted memory.
automatic array rather than an array allocated with alloca().
(This was the only use of alloca() in the kernel, and it wasn't
necessary or consistent with the way other functions in this file
work.)
This is a bit of a hack, as-is, since there's a lot of code that's
outright duplicated between the various files and because it doesn't
support detection of a network device as the root device. The
latter's not a problem yet, because NetBSD/Alpha can't load the kernel
from the network to begin with.
structure and 'aux', right before ca_attach is called for the
newly-attached device. This allows the alpha port to do root device
autodetection without modifying every bus and device driver which could
be in the 'boot path.' In the long run, it may make sense to make
this machine-independent.
an extended header is present i.e. don't assume an extended header as
however unlikely there could be a podule that doesn't have one.
Calculate an absolute address for the podule's interrupt mask rather
than leaving it relative to the base address of the podule.
If the interrupt status pointers are not present or are zero then
used the default bits as specified in the podule specification to
determine if the podule is interrupting.
chained podule interrupt handlers.
Fill out the ih_maskaddr and ih_maskbits fields in the interrupt handler
structure so that interrupt dispatcher knows where to look to determine
if the handler should be called.
General code tidy up and source code formatting.
chained podule interrupt handlers.
Fill out the ih_maskaddr and ih_maskbits fields in the interrupt handler
structure so that interrupt dispatcher knows where to look to determine
if the handler should be called.
back on timer 1 interrupts if none is specified.
Only set up timer 1 is the driver is using timer 1 interrupts.
Don't claim the interrupt but allow them to be passed on to other
handlers.
Fixed the handling of IPL_NONE.
Debugged support for interrupt chaining.
Fill out the intrnames array with the name of the interrupt handler
currently at the head of the chain.
Guarded several sanity checks with #ifdef DIAGNOSTIC.
Added interrupt chaining.
Removed some dead debugging code.
Guarded several sanity checks with #ifdef DIAGNOSTIC
Make sure interrupts are disable while updating the IOMD interrupt
masks.
Removed several old debugging functions that are no longer needed.
Block interrupts while updating the soft interrupt masks.
Fixed softclock interrupts and added IRQ_SOFTPLIP to the SPL_SOFT mask.
Rename the currently unused irq handler structure fields for podule
interrupts so they make more sense.
Define IPL_NONE as a positive value instead of -1 and increase the
number of IPL levels.
from from the corresponding `ic_*' and `dc_*' values. This is not perfect,
but it makes SS4s and SS5s run until we have proper per-cpu cache handling.
Use the `cache-physical?' property to determine the value of `vactype'
on sun4m's. If absent, set vactype to VAC_WRITETHROUGH (XXX) else VAC_NONE.
Print simpler sun4m CPU identifier on attach.
>use p->hashfraction when doing non-time-critical calculations, rather than
>using HASHFRACTION directly. in time-critical calculations, if HASHFRACTION
>is a power of two, check that p->hashfraction == HASHFRACTION and if so do
>the calculation with the compiled-in value so that the compiler can optimize
>out (potentially) expensive divisions. if p->hashfraction != HASHFRACTION,
>actually do the division. This has the result that on machines with slow
>division, the division can be optimized out of the common case, but that
>if HASHFRACTION changes from the compiled-in value (for whatever reason),
>profiling will still work. Changes suggested by Chris Torek.
(1) right now GENERIC can boot via NFS, and
(2) in the long run, GENERIC should autodetect network booting
and pick the correct root device.
Because of (1), GENERIC_NFS is no longer _needed_ in the short term.
Because of (2), GENERIC_NFS is not _wanted_ in the long term.
and whacking a bit here and there where appropriate. Does not yet do
automatic root device detection, but that's much easier to add now.
RB_ASKNAME now supports specification of network devices, for diskless
booting. Also, RB_ASKNAME is now supported on _all_ kernels.
a (was ~RB_SINGLE, redundant with 'A') -> askname
n (was RB_ASKNAME) -> no meaning
d (was RB_DFLTROOT) -> no meaning (unnecessary with new setroot() code)
m (was RB_MINIROOT) -> no meaning (miniroots currently unsupported;
#ifdef'd out)
N (was ~RB_ASKNAME) -> no meaning (unnecessary; just don't specify RB_ASKNAME!)
Enable reselections as soon as possible after a disconnect - prevents
losing a reselecting device.
Check for and ignore a spurious interrupt during a DMA input (from the
Mach driver).
>Update for present reality (function names), clean up a bit (printfs,
>"panic: foo XXX"), and fix a couple of printf format specified bugs
>(which were normally #if 0'd out). Inspired by Multia/UDB support
>changes sent by Matt Thomas.
and:
>changes from Matt Thomas so that the Multia/UDB can attach its
>'com' interrupts, cleaned up some. Basically: if sharing type of
>new interrupt is different than what the hardware is currently set up
>for (e.g. requesting edge-triggered and the hardware is set up by
>the PROM for level triggered) and there are no interrupt handlers on
>that line already, warn about it and use the hardware type that the
>line was already set for (to avoid making the console blow up on
>reboot). If same circumstances but there is already a handler, panic
>as before.
cgd