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288 Commits

Author SHA1 Message Date
thorpej
44605ba506 Define a bunch more system variations. 1998-06-03 23:07:38 +00:00
thorpej
d6041754c2 Allow the DMA tag to specify a boundary contraint. If the device has a 
more strict boundary, the map will use it, otherwise the map will inherit
the tag's, unless the tag's constraint is 0 (no boundary constraint).
 1998-06-03 18:25:53 +00:00
kleink
a97fc2f180 If any of _ANSI_SOURCE, _POSIX_C_SOURCE or _XOPEN_SOURCE are defined, don't 
provide any identifiers other than sig_atomic_t.
 1998-05-25 20:59:01 +00:00
thorpej
085b73d2db Add "SCSIID" and "SCSIFAST" environment variables present on the 
DEC 3000 systems.
 1998-05-25 04:01:10 +00:00
thorpej
a2f214a443 Add fine-grained locking, using a locking protocol modeled after the i386 
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.
 1998-05-20 04:05:50 +00:00
thorpej
ca819f2940 Argh, finish renaming Lev1map to kernel_lev1map. 1998-05-19 18:35:11 +00:00
thorpej
ca12fa7ebe Make PT page reference counting more generic so it can be used for other 
special use page types.
 1998-05-19 02:04:28 +00:00
thorpej
8fdc16212f The Alpha architecture has a variable page size; don't hardwire the 
number of PV entries per page at compile time.
 1998-05-19 00:42:16 +00:00
thorpej
b44dc2ecbf Make the page attribute manifest constant names have similar form to 
page usage manifest constant names.
 1998-05-19 00:29:03 +00:00
thorpej
180f140a85 Keep track of page usage inside the pmap (pvent, l{1,2,3}pt page, "normal"). 1998-05-19 00:20:21 +00:00
thorpej
d19fbe1196 Garbage-collect the old confargs stuff that was used in the Early Days. 
It isn't really appropriate anymore.  Replace it with a real mainbus
attach args structure.
 1998-05-14 00:01:30 +00:00
thorpej
6a49b0a33e Clean up some historical artifacts. 1998-05-13 23:38:26 +00:00
thorpej
49aa171ab9 Add support for chaining DMA windows together, for falling back on 
SGMAPs if a direct-mapped window fails.
 1998-05-13 21:21:16 +00:00
thorpej
4665241bf8 Simplify the direct-mapped DMA case somewhat by adding a window base 
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.
 1998-05-07 20:09:37 +00:00
thorpej
1686aca01d Pull in opt_gateway.h as appropriate. 1998-04-29 23:11:00 +00:00
thorpej
371b1a7fb7 Define the DEC 550 Personal Workstation (Miata) systype. 1998-04-29 02:39:24 +00:00
thorpej
a152517daa Add interrupt counter space for the DEC EB64+, and fix a misplaced 
counter comment in the kn300 interrupt counters.
 1998-04-29 00:34:06 +00:00
thorpej
30188853dc Increase the efficiency of pmap_l{2,3}pte() somewhat, by allowing the 
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.
 1998-04-27 19:07:03 +00:00
kleink
a53c1863fe Provide definitions for intptr_t and uintptr_t, signed resp. unsigned integral 
types large enough to hold any pointer.
 1998-04-27 17:39:10 +00:00
drochner
7f77474219 Oops, forgot to delete. It's in dev/pci now. 1998-04-26 11:57:00 +00:00
mjacob
a8d3df00ed oops- add missing include 1998-04-15 21:42:24 +00:00
drochner
b9d78308c1 tell drivers that this port knows about the mi wscons stuff 1998-04-15 21:12:45 +00:00
mjacob
4fa71d82a5 add Alpha 4100 support 1998-04-15 00:46:57 +00:00
ross
2ce8cda3e5 Get rid of a /* in a comment. 1998-03-27 01:17:18 +00:00
thorpej
6111783e61 if NEW_SCC_DRIVER, 3000/300 and 3000/500 aren't PROM console candidates. 1998-03-26 02:53:21 +00:00
thorpej
456b3df281 Remove the Mach 3 pmap from the tree, replacing it with the contents of 
pmap.old.<whatever>.  To see the history, look at the corresponding
pmap.old.<whatever> file.
 1998-03-26 02:18:03 +00:00
thorpej
e6cf334f5c Keep a few things that reference kernel variables out of the namespace. 
Add a check to see if libkvm is using this file.
 1998-03-25 00:44:34 +00:00
thorpej
ea074f229a cdev_decl the "zs" device (which is really zstty). 1998-03-24 05:17:14 +00:00
thorpej
ee83014c4d Initial mostly-working ioasic attachment for the MI 8530 SCC driver. It is 
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.
 1998-03-24 05:12:00 +00:00
thorpej
fcfe2f1539 Implement a set of `atomic' (using load-locked and store-conditional) 
operations.  Initial set includes:

alpha_atomic_setbits_q()	set bits in a quad
alpha_atomic_clearbits_q()	clear bits in a quad
 1998-03-22 07:26:32 +00:00
thorpej
a8d86e5a7c Replace PMAP_ASNGEN_INVALID with PMAP_ASN_RESERVED. 1998-03-22 05:39:50 +00:00
thorpej
63c73f94e3 Add a few more systypes. 1998-03-20 21:48:03 +00:00
thorpej
b637a998f4 Add ASN housekeeping and a CPU mask to the pmap. 1998-03-18 19:39:23 +00:00
thorpej
961a955498 Move the "are we active" macros out of the header file. 1998-03-18 19:27:46 +00:00
thorpej
56e004c995 Pass the max ASN from the HWRPB to pmap_boostrap(). 1998-03-18 19:02:49 +00:00
thorpej
426d2953f5 Add a macro to test if PG_ASM (Address Space Match) is set in a PTE. 1998-03-18 19:00:15 +00:00
thorpej
f8cff5ab23 Add a software PTE bit that indicates that a va -> pa mapping was entered 
in the physical->virtual list.
 1998-03-17 04:53:43 +00:00
thorpej
00452b441f Move PTE-related constants here, and make them not depend on a hard-coded 
page size (i.e. use the one initialized from the HWRPB at boot time).

Do a bit of cleanup while here, rendering old inherited constants obsolete.
 1998-03-12 07:29:21 +00:00
thorpej
4d8723232d Garbage-collect a bunch of constants that were inherited, but are no 
longer necessary or make sense.
 1998-03-12 07:28:07 +00:00
thorpej
bd3c0e36cf Garbage-collect this a bit. 1998-03-12 06:47:11 +00:00
thorpej
152a4bfa60 Increase the maximum userspace address to 4TB. Leave the stack at 8G 
for now, but make a note that we might want to move it down to 4G later.
 1998-03-12 01:25:52 +00:00
thorpej
e046925c3a Massive cleanup and partial rewrite of the NetBSD/alpha pmap module. 
Major change is that page table page management has been completely
rewritten.  Page tables are now accessed via K0SEG (no more KVA space
wasted on user page tables), and a much larger user address space is
supported.

Many thanks to Chris Demetriou and Ross Harvey for helpful insight and
debugging assistance.
 1998-03-12 01:24:52 +00:00
thorpej
900e1c90bd Nuke ALPHA_STSIZE and ALPHA_MAX_PTSIZE. Add macros to compute and operate 
on segments mapped by L1 and L2 PTEs.
 1998-03-12 01:21:21 +00:00
thorpej
78a173bada Define VPT_INDEX(), which computes the index into the Virtual Page Table 
of the PTE that maps the specified virtual address.

Thanks to Chris Demetriou and Ross Harvey for clarifying the VPT.
 1998-03-09 19:57:57 +00:00
thorpej
cd7d081d02 Export a pointer to the Virtual Page Table. 1998-03-07 03:15:43 +00:00
thorpej
f7d64ef778 Clean up a comment. 1998-03-07 03:15:06 +00:00
thorpej
f55b280ffc Clean this up a bit. 1998-03-07 01:44:08 +00:00
thorpej
60d30d3838 Nuke kvtopte() and ptetokv(). 1998-03-07 01:10:05 +00:00
thorpej
58a7bd9288 Nuke the vatopa() macro. 1998-03-07 00:42:07 +00:00
thorpej
059d0c72de pmap_ste() -> pmap_l2pte(), pmap_pte() -> pmap_l3pte() 1998-03-06 23:41:01 +00:00