PR: 4486
Submitted by: tegge@idi.ntnu.no (Tor Egge)
Implement a function is_adapter_memory() in order to determine what
should nto be dumped at all. Currently, only populated with the ``ISA
memory hole''. Adapter regions of other busses should be added.
This code has been submitted by Luigi Rizzo <luigi@labinfo.iet.unipi.it>,
based on work done by Sujal Patel.
This currnetly doesn't provide the ability to register the port address
of PnP cards assigned a PnP driver. As there aren't any PnP capible
drivers yet, this isn't much of a problem.
The code allows you, through USERCONFIG, configure what the cards port
bases, irqs, and dma's are like. Currently there isn't support to view
what cards are in the sytem.
It successfully configures my PnP Internal Modem and sio then sees the
card as a normal isa device.
man page will be committed shortly.
Approved-by: jkh
Submitted-by: Luigi Rizzo
delay that without this the performance is unacceptable. The 83C690,
83C790, and 83C795 chips which this affects are all designed to work
with 0 waitstates in 16bit mode.
Also cleaned up the toggling of 16bit access mode that occurs during
normal operation; the previous code may not have done the right thing
in all cases.
mode, the slash is a comment leader, while under non-elf it is a divide
symbol (what a concept! :-). Theoretically, #APP/#NO_APP can change this
but that doesn't seem to mesh too well with macros and line continuation.
size in terms of lines (instead of bytes). When changing video mode
in ioctl SW_XXX commands, syscons checks scp->history_size and
allocate a history buffer at least as large as the new screen size.
(This was unnecessary before, because HISTORY_SIZE was as large as 100
lines and this is bigger than the maximum screen size: 60 lines).
Similar adjustment is done in ioctl CONS_HISTORY command too.
PR: kern/4169
Reviewed by: sos
* lots of fixes to error handling-- mostly works now
* improve DMA timing config for Triton chipsets-- PIIX4 and UDMA drive
still untested
* generally improve DMA config in many ways-- mostly cleanup
* clean up boot-time messages
* rewrite PRD generation algorithm
* first wd timeout is now longer, to handle drive spinup
Submitted by: John Hood <cgull@smoke.marlboro.vt.us>
2) Added a non_blocking flag to the write routine.
3) Added a 3rd buffer (actually a ring buffer would be better)
Submitted by: Jim Lowe <james@miller.cs.uwm.edu>
and hardware.
There is now another simple_lock around clock data/hardware accesses in
clock.c and microtime.s. It is my belief that this is the only area
sio/cy might stumble into during an unblocked INTerrupt. Thus I separated
the sio/cy code from the generic disable_intr()/enable_intr() routines.
Controlled by smptests.h: USE_COMLOCK, ON by default.
Add a simplelock to deal with disable_intr()/enable_intr() as used in UP kernel.
UP kernel expects that this is enough to guarantee exclusive access to
regions of code bracketed by these 2 functions.
Add a simplelock to bracket clock accesses in clock.c: clock_lock.
Help from: Bruce Evans <bde@zeta.org.au>
and the sound driver which uses auto dma.
The dma interface functionality remains however it now checks
to see if a dma is operating in auto dma mode and if so it bypasses
the busy flag check . I have modified the sound driver 3.5 to
adjust for this new behavior and tested it under FreeBSD 3.0 -current
This patch also includes the new function isa_dmastop.
Submitted by: Amancio Hasty <hasty@rah.star-gate.com>
irqs can't work (at best, the first one attached wins). It used to
be necessary to skip this check because of bogus irqs in the sound
drivers, but the sound drivers have been fixed, except possibly the
OSS ones.
arg of type u_short (just write the function in ANSI C like most
other functions in this file instead of fixing the interface or
depending on a gcc feature).
Added a new variable, 'bsp_apic_ready', which is set as soon as the bootstrap
CPU has initialized its local APIC. Conditionalize the GENSPLR functions
to call ss_lock ONLY after bsp_apic_ready is TRUE; This should prevent
any problems with races between the time the 1st AP becomes ready and the
time smp_active is set.
region protected by the simplelock 'cpl_lock'.
Notes:
- this code is currently controlled on a section by section basis with
defines in machine/param.h. All sections are currently enabled.
- this code is not as clean as I would like, but that can wait till later.
- the "giant lock" still surrounds most instances of this "cpl region".
I still have to do the code that arbitrates setting cpl between the
top and bottom halves of the kernel.
- the possibility of deadlock exists, I am committing the code at this
point so as to exercise it and detect any such cases B4 the "giant lock"
is removed.
