DEC_1000
DEC_1000A
DEC_ALPHABOOK1
DEC_EB66
Remove support (ran out of space) for: ahc and bha. SCSI must be ncr or isp.
This will be fixed soon by defining an optional, two-floppy install
alternative.
before it can be useful, and [B] #ifdefs do not belong at every call site,
a common API should be defined and the implementations conditionalized, not
the calls. Duhh.
Also, remove the initial XXX mystery_icu debugging code.
Like the 1000A, the AlphaServer 1000 has a daughtercard assembly that
integrates the CPU and core logic, so these can be ev4/apecs or ev5/cia.
New systype, and, sigh, another way of doing interrupts and another
mystery icu.
Kill off some EVCNT_COUNTERS calls, since [A] it has to be rewritten anyway
before it can be useful, and [B] #ifdefs do not belong at every call site,
a common API should be defined and the implementations conditionalized, not
all the calls. Duhh.
AXPpci33 machines + power management and a Cirrus PCI-PCMCIA controller.
There is currently no support for the power management facilities, and
the PCI-PCMCIA controller driver needs some work, but this should boot
and run from disk.
In this case, all it has in it are the never-referenced printable names
for the ELF sections themselves. It's located at the end of the (ramdisk)
netbsd.gz file, so it is a very expensive seek and read for only 85 bytes.
Boot floppy load time:
before: 5 minutes
now: 3 minutes
the iot, memt, and pc in the call so that pci_1000a_pickintr() (and the
other routines in that module) do not need to be aware of the core logic
type just to pass down memory and I/O space tags or to call the decompose
function.
New macros:
LOCATE_PCS(struct rpb *hwrpb, int cpu_number)
PCS_PROC_MAJORTYPE(struct pcs *)
PCS_PROC_MINORTYPE(struct pcs *)
Define LOCATE_PCS() to map (hwrpb, cpu_number) -> Per-Cpu-Slot structure.
Replace the PCS_PROC_{MAJOR,MINOR}{,SHIFT} stuff with macros that simply
return the major and minor cpu type codes.
address on 2 architectures anyhow. Also, move the definition of the `label_t'
type inside _KERNEL protection, since it is specific to the in-kernel
setjmp()/longjmp() implementations.
as with user-land programs, include files are installed by each directory
in the tree that has includes to install. (This allows more flexibility
as to what gets installed, makes 'partial installs' easier, and gives us
more options as to which machines' includes get installed at any given
time.) The old SYS_INCLUDES={symlinks,copies} behaviours are _both_
still supported, though at least one bug in the 'symlinks' case is
fixed by this change. Include files can't be build before installation,
so directories that have includes as targets (e.g. dev/pci) have to move
those targets into a different Makefile.
a struct device * corresponding to the ISA bus device. The ISA DMA
controller driver functions have been renamed and now take a struct
isa_dma_state *, and are called indirectly by machine-dependent code
which provides the DMA state.
These changes allow e.g. `ofisa' (the OpenFirmware configuration
mechanism for the ISA bus, used by e.g. Sharks) to use the MI ISA
DMA controller code.
is defined, the bus_space macros will check to ensure that the bus address
and the target buffer (if applicable) are aligned properly for the size
of the type being used. If they are not, a message will be displayed on
the console.
Strict alignment is required by the Alpha architecture, and a trap will
occur of unaligned access is performed. These changes will aid debugging
of broken device drivers.
Use the check recommended by the Digital Workstation engineers; look
for Miata 1 systems (i.e. with Intel SIO). From Andrew Gallatin.
- Update copyright (Pyxis and BWX).
device 4. Miata 1.5 and Miata 2 have a Cypress at device 7 and PCI IDE
at functions 1 and 2 of the Cypress (like the PC164SX). These on-board
PCI IDE controllers are wired to compatibility mode, so don't bother
trying to map the interrupt.
on the ALCOR2 and Pyxis. BWX is enabled iff:
- It hasn't been disabled by the user (patch `cia_use_bwx' or build cia.o
with the option "CIA_USE_BWX=0"),
- it's enabled in CIA_CSR_CNFG,
- we are running on an EV5-family processor,
- BWX is in the processor's capabilities mask.
the scatter/gather TLB cannot be invalidated on these chips. So, to
work around this, we configure the otherwise unsed DMA Window 2 as a
2M SGMAP window at 128M, point all of its page table entries at the
DMA spill page, and, when the TLB is to be invalidated, put the PCI bus
into loopback mode, and create a target hit on Window 2 every 64k for
the number of TLB entries (plus a few ... it seems to not work unless
we read a few extra times), forcing out old TLB entries to make room for
the new, dummy target hits.
day.
- Convert to use bus_dma.
- Fix cleaning up unaligned start address.
- Correctly determine if the device supports Fast SCSI, and adjust the
minimum sync period accordingly.
- Compute minimum sync period correctly on the 25MHz devices.
- Use GPI2 to determine if we're a 25MHz or 40MHz device.
- Currectly determine SCSI ID and "fast mode enabled" for the built-in
TCDS on DEC 3000 models, using cached information from the PROM environment.
the namespace accordingly.
- Set FCLK in the CFG3 register if we have a > 25MHz clock.
- Indicate that we support Fast mode to the back-end if we're told we're
fast by the TCDS layer.
- Correctly compute the minimum sync period.
- Fix the autoconfiguration model; the TCDS children don't attach to
TurboChannel, so don't make it look like they do.
- Make the driver use bus_space (not bus_dma yet; soon)
- Recognize the PMAZ-FS (baseboard fast SCSI on DEC 3000s) and the
PMAZB-AA (TCDS option card) and PMAZC-AA (TCDS fast SCSI option card).
- Rearrange it a bit, so that it can eventually be made into an "MI"
TurboChannel driver (i.e. work on DECstations).
UVM pmap's locking protocol, written by Chuck Cranor. Not all of the
support for multiple processors is here yet, but the kernel does run
under moderate loads with LOCKDEBUG (all locking operations are no-ops
unless LOCKDEBUG is turned on).
This is by no means complete... there are still some possible snares
to take a look at.
The graphics device driver passes a "default attribute" for normal text
output to the wscons framework. If the emulation module needs more
attributes (for different "renditions") it can allocate them via a
callback.
For now, only the "sun" emulation makes use of it.
interrupt routing directly, use the interrupt routing information provided
in the PCI "line" register. The previous scheme did not work properly on
AlphaPC 164SXs. Also, be silent about the fact that 0/8/x does not
have its interrupt mapped; this is to be expected on the 164SX (this is
the Cypress PCI-ISA bridge, which has IDE wired to compat mode on functions
1 and 2; the 164SX does _not_ have PCI IDE on device 11 like other AlphaPCs).
member to the DMA tag, and calling the direct-mapped back-ends directly,
rather than through chipset-specific front-ends which pass the window
base as an additional argument.
function is meant to glue the new pckbd driver to the old console code
on ports which use the old PC-style console code. This will eventually
be purged when all of the old legacy consoles have gone away.
function is intended to process any deferred pmap operations, and is not
meant as a general means of flushing the TLB. Since this pmap module does
not defer any operations, make pmap_update() do nothing.
caller to pass an optional 3rd argument, which is the previous level
PTE corresponding the virtual address. If this argument is non-NULL,
the table walk otherwise necessary will be bypassed.
less like an Intel SIO except that the ELCR registers are accessed differently
than on the Intel SIO.
XXX This code needs to be split up into bridge front-end and PIC back-end
XXX pieces.
a HAVE_GCC28 check-variable that can now be used to add other gcc-2.8
flags in cases where they may be useful, or to remove gcc 2.7.2 "bug
workaround" flags.)
By not doing so, a very obscure bug followed where the config search
stuff stopped at the bridge (pceb) and didn't even call match for the
two Qlogic ISP cards that followed.
DEBUG, this performs a table walk. Othwise, the Virtual Page Table is
used. Use this macro in a few places where this was done by-hand.
Make vtophys() use PMAP_KERNEL_PTE(). In non-DEBUG cases, this is
a fair bit faster.
swapped out, so remove all of the physical mappings the process has
in order to free up the page table pages.
Since the pmap module is allowed to "forget" mappings, pmap_collect()
may be called in other situations where the memory situation is desperate,
although it's more likely that the pages will simply be needed again the
next time a process runs.
the kernel on most platforms, including all of the entry-level platforms.
2. Kill the comments and options for load address selection.
3. Kill the default -g.
be invalidated if the pmap is not active. A rare thing (in fact, I'm
having trouble thinking of a scenario where it would happen), but it was
incorrect, nonetheless.
enough to use as a console on my DEC 3000/400 (connected to a VT-520
terminal).
XXX The MI SCC driver needs serious changes to handle platforms which
have muliple SCC attachments (e.g. the Alpha port, which has an ioasic
attachment for TurboChannel systems and a gbus attachment for TurboLaser
systems).
XXX The MI SCC driver also needs changes to deal with the wacky (to put
it mildly) way the chips are wired up on the ioasic (on both TC Alphas
and DECstations). These are going to come along later.
version has 2GB direct map starting at 2GB, and either 256MB or 1GB
S/G starting at 1MB. I've done *some* testing on this, but I'm not
quite happy with it yet.
out how much s/g ram is available. Can't really use the 128K entry S/G
ram yet- but I'll fix that later. More importantly, add in a dwlpx_iointr
handler that will try and figure out what the DWLPX error is and at
least print out what is happening- I actually found it useful in S/G
entry debugging as it could tell me that I had some bad S/G entries.
* Add more #ifdef pmax/#endif, #ifdef alpha/#endif where appropriate.
Config and heade files need more work (or replacement)
change TK_NOTYET to HAVE_RCONS
change commented-out /* && cn_tab.cn_screen */ to && raster_console()
* Add DDB hooks.
* Note where Alpha console ignores carrier on consoles.
* Add pmax-derived console tty-size code inside HAVE_RCONS
* Fold in gross pmax rcons-input hooks, inside HAVE_RCONS
Untested, but whitespace/ifdef only, cross-compiles OK,
preprocessing shows no significat differences (famous last words)
the TLB and I-cache in the SWITCH_CONTEXT macro.
- Right after switching to proc0's newly-created context at startup time,
flush the TLB and I-cache; this is the only place where it's not done
automatically.
- Fix a nasty bug in a critical section of cpu_switch(); change the
pmap_activate -> SWITCH_CONTEXT -> pmap_deactivate sequence to
pmap_deactivate -> pmap_activate -> SWITCH_CONTEXT. This prevents
erroneously marking a pmap inactive if switching to a process that
shares it's address space (and thus its pmap) with the oldproc! Noticed
by Chris Demetriou.
of TLB and I-cache flushes, significantly speeding up context switches.
Once again, many thanks to Chris Demetriou and Ross Harvey for code
review and debugging assistance!
invalidation algorithm:
if (old mapping had PG_ASM set || pmap is active) {
TIBS(va);
if (also sync I-stream)
imb();
}
The check for "old mapping had PG_ASM" will get all kernel mappings (since
kernel mappings always have PG_ASM set).
This allows us to remove the bogus check for the kernel pmap in
active_pmap() - do so.
Use the new TLB invalidation macro whenever such action is needed.
as well, until some other changes are made). Nuke active_user_pmap(),
and change the places that used it to use active_pmap() instead (as well
as make some DIAGNOSTIC consistency checks).
the PTE was previously invalid, no TLB invalidation is necessary because:
(1) when a PTE is invalidated, its entry is flushed from the
TLB
(2) the PALcode won't install an invalid PTE into the TLB.
structure. We will continue to run on this context (which is the
global Lev1map at this point) right up until we switch to proc0's
context in switch_exit().
