* Implement fpgetsticky() for alpha.
* Direct fpsetsticky() and fp{get,set}mask() into alpha kernel via sysarch(2).
* Define new sysarch(2) stub for above and install and distribute sysarch.h
for alpha. (The fpcr IS user mode r/w, but for reasons beyond the scope
of a commit message kernel calls are needed.) And much kernel Magick is
required before these do anything, but this way programs compiled under
1.4 will DTRT on future snapshots and releases.
in DDB (e.g. if a bad pointer was dereferenced; the debugger will recover).
- Change a comment to indicate that we are on the debugger stack when we get
to ddb_trap().
- Fix possible buglet in computation of the branch target in db_branch_taken().
happen. If the debugger doesn't handle the trap, arrange things so the
debugger won't be called again before we panic.
- Before panic'ing, give the debugger a chance to field the trap, and
if the debugger has handled things, allow the kernel to continue running,
like the i386 port does.
debugger differently.
- Pull in debugger glue if DDB is configured.
And one unrelated change, while I was here: Don't create a fake trapframe
for main(); it hasn't been used by main() for quite some time, and panic
if main() returns, because that's not supposed to happen now.
- Actually display the kn300 irq, not the MCPCIA irq, in the interrupt
string. Also, don't bother displaying device/pin on strays, since
it doesn't play will with shared interrupts that would happen due to
a PCI-PCI bridge.
- Shave a few more cycles out of the interrupt dispatch routine.
supposed to be Window 1, but a cut'n'paste error made it stomp over
Window 0, thus breaking ISA DMA. Fix this. (Confirmed to work with
floppy driver.)
While I'm here, do something I've been meaning to do for a while: change
Window 1 from a 1G at 2G to a 2G at 2G direct-mapped window, and add
a Window 2 of 1G at 1G SGMAP-mapped. Chain Window 2 to Window 1, and
use it as a fall-back for PCI DMA if the system has more than 2G of RAM.
The access is more efficient this way (and this was done in the interrupt
dispatch code, so some cycles are actually shaved), and gcc gets annoyed
when chars are used as array subscripts.
- Adjust for the fixed Rawhide console initialization.
- When mapping a PCI interrupt, don't always map device 1 to IRQ 16. Device
1 is only the internal 53c810 on MID 5, and is an invalid device number
on any other MID.
- Adjust for change mcpcia_config/mcpcia_softc structures.
- Nuke the kludgy linked list of mcpcia_softc structures. Instead, just
use savunit[v] to index into mcpcia_cd.cd_devs[] to find the MCPCIA
which has the stray interrupt.
- Some other minor cosmetic cleanup.
which holds state of the MCPCIA to which the console is attached.
- All MCPCIA info is now stored in the mcpcia_config structure; the
mcpcia_softc only contains a struct device and a pointer to one of these.
- If attaching the console MCPCIA, use the static configuration, else allocate
the substructure.
- Rename mcpcia_init() to mcpcia_init0(), and make it take a "mallocsafe"
argument.
- Implement a new mcpcia_init(), which looks for the MCPCIA which has the
EISA bridge attached. Initialize this MCPCIA as the console MCPCIA (the
console on the Rawhide is only allowed on this MCPCIA; firmware rule).
- Eliminate the kludgy linked listed of mcpcia_softcs. Just use mcpcia_cd
to find all configured instances.
Separate bug fix: Actually clear the MCPCIA error mask after probing for
PCI (and ISA) devices, don't just clear it twice in mcpcia_init0().
Some other slight cleanup.
MID order.
- Export the shuffled MID order; other files now need it.
- Don't derive the GID from the unit number of the mcbus. A user could
render his kernel non-bootable by using a different unit number in the
kernel config file. We (and the hardware) only support one MCBUS, so
simply use instance 0. Note that this will need to be adjusted if there
are even any multiple-MCBUS systems.
Instead of using the PROM console until autoconfiguration is complete (at
which time we called dec_kn300_cons_init() directly!), make this work like
basically all of the other systems which have PCI attached consoles. That
is, initialize the PCI chipset which holds the console early, and perform
console initialization at the correct time.
This should make both PCI and ISA display consoles with PC keyboards work
(i.e. the deskside workstation version of the Rawhide).
define a flag UVM_PGA_USERESERVE to allow non-kernel object
allocations to use pages from the reserve.
use the new flag for allocations in pmap modules.
