thorpej
003c50d1d5
Add a macro to invalidate the TLB for a given pmap/va pair. TLB
...
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.
1998-03-18 23:55:25 +00:00
thorpej
15adb17803
Eliminate the last argument from pmap_remove_mapping(); it makes its own
...
decisions about TLB invalidation.
1998-03-18 23:11:44 +00:00
thorpej
7ee4af11a7
Change active_pmap() to use the CPU mask (XXX and check for kernel pmap
...
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).
1998-03-18 22:50:50 +00:00
thorpej
605472f676
Optimize out a TLB invalidation in a common case of pmap_enter(): if
...
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.
1998-03-18 22:13:58 +00:00
thorpej
cfdf9a95ad
Keep track of which CPUs are using a pmap by setting/clearing bits
...
in the pmap's CPU mask in pmap_activate()/pmap_deactivate().
1998-03-18 21:57:03 +00:00
thorpej
43614761e3
In cpu_exit() deactivate the address space before freeing the vmspace
...
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().
1998-03-18 20:38:07 +00:00
thorpej
87eb2cfded
Don't call pmap_deactivate() if we jumped into the middle of cpu_switch()
...
from switch_exit(), since by this time, the vmspace will have already
been deactivated and freed.
1998-03-18 20:36:13 +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
d37acae24c
Add a DIAGNOSTIC checks for the kernel pmap in pmap_create_lev1map()
...
and pmap_destroy_lev1map(). Correct a comment in another DIAGNOSTIC
panic.
1998-03-18 19:21:50 +00:00
thorpej
06b49b8f3e
Change a couple of assert()s to DIAGNOSTIC panics.
1998-03-18 19:12:57 +00:00
thorpej
438599b408
Correct a comment in pmap_bootstrap().
1998-03-18 19:04:42 +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
bouyer
9f50fca1fd
Add commented out "options FFS_EI"
1998-03-18 16:34:41 +00:00
thorpej
9c1e8fc2ed
Implement the PMAP_NEW interface for UVM.
1998-03-17 05:15:24 +00:00
thorpej
1477f77353
Properly depend on the PMAP_NEW option.
1998-03-17 05:00:18 +00:00
thorpej
6bbfd3e9ff
Use pmap_kenter_pa() in _bus_dmamem_map() if PMAP_NEW.
1998-03-17 04:59:36 +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
00a597fe92
Use vm_page_alloc1() and vm_page_free1() as appropriate.
1998-03-12 06:27:36 +00:00
thorpej
1f8d640c4b
Bump maxusers to 64.
1998-03-12 06:04:47 +00:00
thorpej
6e6e2d7ebf
Dump maxusers to 32.
1998-03-12 06:04:31 +00:00
thorpej
d9a1f8ba36
Adjust the default and low-bound maxusers, now that the pmap can deal.
1998-03-12 06:04:14 +00:00
thorpej
dfe0937a7e
If not DEBUG, use the Virtual Page Table to get the PTE for kernel mappings
...
in pmap_enter() and pmap_emulate_reference().
1998-03-12 02:59:22 +00:00
thorpej
30766180a3
Nuke these; they are long-since obsolete.
1998-03-12 01:28:01 +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
7225aae835
Move check for user-pmap-still-using-Lev1map from pmap_enter_ptpage()
...
to pmap_enter().
1998-03-09 22:31:23 +00:00
thorpej
daa9cfae50
Don't do the Segtabzero-for-dev-zero hack.
1998-03-09 20:43:28 +00:00
thorpej
e456fc0538
Simplify/speed up pagemove() somewhat by using the Virtual Page Table.
1998-03-09 20:17:03 +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
b3d7fd8f3f
Just use vtophys() to get the PCB phys addr.
1998-03-07 04:20:45 +00:00
thorpej
9c236919e9
Rewrite pmap_extract(), and use it as appropriate in vtophys() rather
...
than (almost) duplicating the code.
1998-03-07 03:37:02 +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
dcbc04e7af
Rename Sysptmap and Sysmap to Lev2map and Lev3map, respectively, and
...
add some comments describing in better detail what they are and how they
are used.
1998-03-07 01:43:54 +00:00
thorpej
60e6d2e48f
Update a comment in pagemove().
1998-03-07 01:26:04 +00:00
thorpej
ff155df72a
Nuke kvtopte(). Also, change pagemove() to lookup the from and to PTEs
...
in each iteration of the loop, since PT pages may not necessarily be
contiguous.
1998-03-07 01:11:39 +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
thorpej
8081bd3017
Move pmap_pte*() macros into the header file, nuke pmap_ste_v(), add
...
pmap_lev1pte().
1998-03-06 23:19:26 +00:00
thorpej
53e3bf87b9
Fix think'o in last kcopy() change.
1998-03-05 02:10:57 +00:00
thorpej
a2db880e8c
In kcopy(), make sure we save and restore the old fault handler; kcopy()
...
is called from uiomove(), which may be in the code path of servicing
a non-fatal page fault caused by a copyin() or copyout().
1998-03-04 02:11:58 +00:00
cgd
09dbd9234d
fix typo in last commit (noticed on inspection)
1998-03-02 21:36:55 +00:00
cgd
7ff7b02fac
allow LDSTATIC definition to be overridden by bsd.own.mk/mk.conf
1998-03-02 20:01:05 +00:00
cgd
9da165424c
allow LDSTATIC definition to be overridden by bsd.own.mk/mk.conf
1998-03-02 19:57:00 +00:00
ross
03169f0089
Second part of cdev_decl() migration. Declare cputype variable.
...
Add config info for a12 switch driver and console driver.
1998-03-02 08:04:04 +00:00
ross
41a61f7c9e
Update interrupt name table for a12 crossbar.
1998-03-02 07:47:52 +00:00
ross
b8d5ca6c78
Centralize cdev_decl() for these MI drivers + a12dc in machine/conf.h (cgd)
...
(This does not introduce any config or option dependencies.)
1998-03-02 07:44:18 +00:00
ross
ff94450f84
Use the more consistent register field names & add ctags(1) keys.
1998-03-02 07:07:41 +00:00
ross
6e6f663204
Rewrite of interrupt dispatch logic. Add ctags(1) keys for *a12*.h files.
1998-03-02 07:03:20 +00:00
ross
13aeff8570
Fix attachment message.
1998-03-02 06:59:38 +00:00
ross
1ada245647
Support attachment of xb and a12dc, define most of the remaining
...
core logic register fields.
1998-03-02 06:56:16 +00:00
ross
469f9b6126
Clean up attachment code and prototypes.
1998-03-02 06:53:34 +00:00
thorpej
7a571c643b
Rename a few macros to better describe what they are:
...
- kvtol1pte() -> l1pte_index()
- vatoste() -> l2pte_index()
- vatopte() -> l3pte_index()
1998-03-02 00:49:01 +00:00
thorpej
54bb4f9e6e
Rewrite pmap_enter() to have a more sane structure, useful for when
...
page table page management is rewritten.
1998-03-02 00:22:54 +00:00
ross
4ebd177543
Remove the A12 from the rogue's gallery of the promcons-addicted.
1998-03-01 08:17:36 +00:00
ross
39254d4d4b
Poll console at 50 Hz, not 1024 Hz! (4 tlb and imb coherency ops per poll
...
make this exceedingly expensive even on an alpha) Note: only 3 systypes
still use promcons.
1998-03-01 07:40:11 +00:00
ross
2170c2a46d
Force elf symbol sections to an addressable boundary.
1998-02-28 10:38:55 +00:00
cgd
18a1481f7a
Use NFS_BOOT_DHCP rather than NFS_BOOT_BOOTP. The former is more
...
flexible, and the boot blocks use DHCP already(!!!) and it'd be good
for the kernel to be consistent with them.
1998-02-28 02:01:32 +00:00
thorpej
ba3ddd48ad
Move the code that enters and removes entries from the pv_table into
...
functions pmap_enter_pv() and pmap_remove_pv().
1998-02-28 01:07:05 +00:00
thorpej
9bbe89ea3f
Garbage-collect the kpt_page stuff; it was basically unused in this
...
pmap, and isn't applicable to how dynamically allocated kernel page
tables will work on the Alpha.
1998-02-27 22:25:25 +00:00
thorpej
faf1155de5
Revamp pv_table management:
...
- Make pv_table an array of struct pv_head's, which contain LIST_HEADs
for the pv_entry's, as well as page attributes (mod, ref, ptpage).
- Use <sys/queue.h> to manipulate pv_entry lists.
- Fix several obvious bugs in pmap_collect_pv().
- Use K0SEG to access pv_page's.
1998-02-27 19:39:03 +00:00
thorpej
f17bbcfffa
Changes necessitated by the fact that all pmaps have their own level 1
...
page tables: use curpcb to determine which level 1 map defines the
current VM context, and use that level 1 map when mapping and unmapping
the PROM.
1998-02-27 04:03:00 +00:00
thorpej
c4e7c88520
Step 1 of the Grand Alpha Pmap Rototill:
...
- Clean up pmap_bootstrap() some, and make a slight change to how the
PROM mappings are saved.
- Give each pmap its own level 1 page table, rather than sharing a global
level 1 page table. This will eventually allow for Very Large user
address spaces.
- Keep a list of all pmaps, so that when kernel level 2 page tables are
allocated, all level 1 tables may be updated.
- Add a couple of functions for allocating and freeing page table pages.
- Add a few comments about ASN allocation.
1998-02-27 03:59:58 +00:00
thorpej
5d56ce57ba
Several changes related to all pmaps having their own level 1
...
page table:
- Update the current hwpcb pointer in the SWITCH_CONTEXT macro, so that
we know it's always correct.
- Optimize cpu_switch(): if we're switching to ourselves, skip the
actual context swap.
- Clean up some comments and remove some code rendered obsolete by
the fact that address spaces are now selected by switching to a
new level 1 page table.
1998-02-27 03:53:49 +00:00
thorpej
cb6972d4d3
Implement alpha_pal_swpctx().
1998-02-27 03:44:53 +00:00
perry
1ed8ea9966
note second parm of sysarch() is now void *, + trivial KNF, etc.
1998-02-25 21:41:55 +00:00
thorpej
58509e699f
Add support for UVM.
1998-02-24 07:38:01 +00:00
thorpej
772da350d4
Disable the message buffer during crash dumps by clearing msgbufenabled,
...
not msgbufmapped.
1998-02-19 04:18:30 +00:00
mycroft
3b9429b248
Minor changes to make all the float.h files match.
1998-02-18 11:01:27 +00:00
cgd
f19c0ee648
nuke pmap_map(). it's an internal MD function, and it's unused
1998-02-18 01:44:32 +00:00
thorpej
8354e68508
Remove "class" declarations, and add "devclass" declarations where
...
appropriate. Fix several inconsistencies between device class and
attributes. Mostly from Chris Demetriou.
1998-02-16 22:12:45 +00:00
thorpej
b4e77b173a
Add support for non-contiguous physical memory, using MACHINE_NEW_NONCONTIG.
...
These changes also recover memory that is located before the kernel in
the first system software segment on systems which do not use the PROM
for console I/O. Written by Chris Demetriou and myself.
1998-02-16 03:59:55 +00:00
cgd
1584dc4420
The pmap_emulate_reference warning about the page not being managed should
...
be a panic instead. If it's hit, "random" memory is going to be corrupted.
1998-02-14 02:04:05 +00:00
cgd
1538076f47
fix pasto in last (sigh)
1998-02-14 01:18:46 +00:00
cgd
ab67040f58
fix for (harmless) bogon introduced in last commit
1998-02-14 01:17:19 +00:00
cgd
e719e8f703
adjust kernel core dump code for changes in kcore.h, also clean up
...
slightly.
1998-02-14 00:53:26 +00:00
cgd
69d88fbfd6
replace the single phys_ram_seg_t with a count. an array of segment
...
descriptors will be placed after this structure in the core file.
1998-02-14 00:17:57 +00:00
enami
2c12105cda
Remove comment which says that fxp is untested (it is known to work now).
...
Also, make model name closer to what driver prints startup.
1998-02-13 04:33:30 +00:00
cgd
25d056473c
Clean up kernel initialization. Use the bootinfo structure (or innate
...
knowledge) earlier, and gather all information needed earlier. Mark the
init code carefully re: when it can print stuff out, when it can expect
the firmware to stop working, etc. Be more careful about using the PROM
console and other PROM facilities, and hint that in the future all use
of firmware/boot program callbacks by the kernel should go away (since
the world may not be mapped the way the firmware/boot program wants!).
1998-02-13 02:09:03 +00:00
thorpej
b22ad9fe1a
Define a lookup table for Alpha platform variation names.
1998-02-13 01:29:09 +00:00
thorpej
bdc328cb13
Use the platform family name in alpha_unknown_sysname().
1998-02-13 00:27:37 +00:00
thorpej
bd60d9c62d
Rewrite the way the platform model string is determined:
...
- Attempt to find the model string in the HWRPB's DSR area. Failing that
(if the HWRPB version is too old)...
- Look up the system variation in a variation/string table. Failing that
(unknown variation)...
- Create a default model string using the variation number.
Also, factor out a bunch of common code.
1998-02-13 00:12:45 +00:00
thorpej
44df600994
Define the structure of the HWRPB's Dynamic System Recognition area.
1998-02-13 00:07:25 +00:00
thorpej
7fbc685c06
Make it a little more clear that the "eb164" systype doens't necessarily
...
mean that a machine is a DEC EB164 (it may be an AlphaPC 164, which is
different, from the firmware's perspective).
1998-02-12 20:46:47 +00:00
thorpej
314f40f8d8
We can't count on the CIA revision register telling us if we're a 21171
...
or 21172, so make the chip/revsion output a little more sane.
1998-02-12 20:43:45 +00:00
cgd
5a1a26d325
set 'hwrpb' in a way that works exactly the same way as the previous
...
code, but looks significantly less gross.
1998-02-12 02:54:02 +00:00
cgd
c7ba12ab93
rename struct rob's "rpb" element to "rpb_phys" for clarity. also,
...
change its type from a pointer to a never-defined structure to a
u_int64_t.
1998-02-12 02:27:48 +00:00
cgd
92d17b5b50
clean up the way bootinfo information is passed and used: move the version
...
number passed by the boot block into a register, change the kernel's
bootinfo handing so that it always uses bootinfo to get bootinfo-ish values
(filling them in if the boot blocks didn't pass them), and make versioning
a small bit more sane.
1998-02-12 01:53:18 +00:00
thorpej
c26f962957
Use kernel_map in bus_dmamem_{map,free}().
1998-02-11 03:08:31 +00:00
thorpej
30aa56fc66
Use M_DMAMAP where appropriate.
1998-02-11 01:37:51 +00:00
cgd
e21b7a5995
leave space for bootstrap stack when calculating kernstart
1998-02-11 00:05:33 +00:00
thorpej
1951c4b19b
Bump KNMEMCLUSTERS slightly, and make it more obvious how to tune it
...
(lifted from i386 port).
1998-02-10 03:53:01 +00:00