Commit Graph

487 Commits

Author SHA1 Message Date
Jake Burkholder
6df1fae014 Demark sections of code that need special fault handling with labels.
Check if the trapped pc is inside of the demarked sections to implement
fault recovery for copyin etc, instead of pcb_onfault.  Handle recovery
from data access exceptions as well as page faults.

Inspired by:	bde's sys.dif
2002-08-16 00:57:37 +00:00
Jake Burkholder
b5d2ed3047 Store the number of itlb and dtlb entries separately; they may be different.
Find the prom node for the boot cpu earlier and store it in the per-cpu
area, so that cache_init can be called earlier.
2002-08-15 05:24:55 +00:00
Jake Burkholder
5aebb40291 Auto size available kernel virtual address space based on phsyical memory
size.  This avoids blowing out kva in kmeminit() on large memory machines
(4 gigs or more).

Reviewed by:	tmm
2002-08-10 22:14:16 +00:00
Alan Cox
33559722db o Introduce pmap_page_is_mapped(). Its purpose is to obsolete
the PG_MAPPED flag.
2002-08-07 18:03:00 +00:00
Jake Burkholder
4fbe520926 Forgot to commit this.
Spotted by:	scottl
2002-08-01 21:39:54 +00:00
Jake Burkholder
055ca86c52 These file are no longer used (moved to userland and/or merged into
pmap.c).
2002-07-31 16:23:27 +00:00
Jake Burkholder
61f869600d Add definitions for statistical and high-resolution profiling. The calling
conventions for _mcount and __cyg_profile_func_enter are different, so
statistical profiling kernels build and link but don't actually work.
IWBNI one could tell gcc to only generate calls to the former.

Define uintfptr_t properly for userland, but not for the kernel (I hope).
2002-07-30 06:14:34 +00:00
Mike Barcroft
49545b3891 Create a new header <machine/_stdint.h> for storing MD parts of
<stdint.h>.  Previously, parts were defined in <machine/ansi.h> and
<machine/limits.h>.  This resulted in two problems:
  (1) Defining macros in <machine/ansi.h> gets in the way of that
      header only defining types.
  (2) Defining C99 limits in <machine/limits.h> adds pollution to
      <limits.h>.
2002-07-29 17:41:23 +00:00
Jake Burkholder
d40e229819 Add _ALIGN_DATA and _ALIGN_TEXT macros. 2002-07-29 00:38:07 +00:00
Mike Barcroft
7a415ec906 Revert the previous delta; uintfptr_t needs to be available to
userland for libc/gmon to compile, so the typedef in <machine/types.h>
isn't good enough.  This is really ugly since we end up with the
actual value which uintfptr_t is typedef'd from, in multiple places.
This is bug for bug compatible with the other FreeBSD architectures.

Noticed by:	sparc64 tinderbox
2002-07-28 15:59:51 +00:00
Jake Burkholder
839b2e106a Add declarations for btext and etext. 2002-07-28 01:01:14 +00:00
Jake Burkholder
7d8a5be3ea uintfptr_t has moved to machine/types.h. 2002-07-27 23:36:51 +00:00
Jake Burkholder
30bbe52432 Implement a direct mapped address region, like alpha and ia64. This
basically maps all of physical memory 1:1 to a range of virtual addresses
outside of normal kva.  The advantage of doing this instead of accessing
phsyical addresses directly is that memory accesses will go through the
data cache, and will participate in the normal cache coherency algorithm
for invalidating lines in our own and in other cpus' data caches.  So
we don't have to flush the cache manually or send IPIs to do so on other
cpus.  Also, since the mappings never change, we don't have to flush them
from the tlb manually.
This makes pmap_copy_page and pmap_zero_page MP safe, allowing the idle
zero proc to run outside of giant.

Inspired by:	ia64
2002-07-27 21:57:38 +00:00
Jake Burkholder
dab4349561 Remove the tlb argument to tlb_page_demap (itlb or dtlb), in order to better
match the pmap_invalidate api.
2002-07-26 15:54:04 +00:00
Thomas Moestl
f42d907165 When multiple IOMMUs are present in a system, use a single TSB for all
of them, and couple them by always performing all operations on all
present IOMMUs. This is required because with the current API there
is no way to determine on which bus a busdma operation is performed.

While being there, clean up the iommu code a bit.

This should be a step in the direction of allow some of larger machines
to work; tests have shown that there still seem to be problems left.
2002-07-16 18:17:03 +00:00
Thomas Moestl
1ab480b27b Add new UltraSPARC-III VIS II instructions. 2002-07-16 17:44:01 +00:00
Thomas Moestl
fe905bcb53 Add new LSU bits for UltraSPARC-III. 2002-07-16 16:24:03 +00:00
Thomas Moestl
63ebf186a7 Add ASI definitions of UltraSPARC-III (Cu) processors, and add some
previously missing US-I and II ones.
2002-07-16 16:22:25 +00:00
Jake Burkholder
d73b19ef9d Use a fixed address for KERNBASE, so it doesn't change if the size of KVA
is increased.  Its confusing for all the kernel addresses to change, and
doesn't serve much purpose as far as conserving address space.
2002-07-13 03:29:10 +00:00
Jake Burkholder
5d5d3157fb Identify UltraSPARC-III and UltraSPARC-III+ cpus. 2002-07-13 03:23:29 +00:00
Thomas Moestl
a935ed4fae When sending cache flushing IPIs, don't try to IPI the triggering CPU
itself; this causes undefined behaviour on UltraSPARCs. In particular,
the interrupt packet data words will not necessarily be delivered
correctly, which would result in a crash.
This bug also caused the cache-flushing work to be done twice on the
triggering CPU (when it did not cause crashes).

Reviewed by:	jake
2002-07-12 16:26:49 +00:00
Mike Barcroft
f889202ba4 Remove label_t and physadr, which seem to have never been used in
FreeBSD.

Submitted by:	bde
2002-07-10 15:47:59 +00:00
Mike Barcroft
ba5fe51088 Move __offsetof() macro from <machine/ansi.h> to <sys/cdefs.h>. It's
hardly MD, since all our platforms share the same macro.  It's not
really compiler dependent either, but this helps in reducing
<machine/ansi.h> to only type definitions.
2002-07-08 16:43:35 +00:00
Mike Barcroft
a19d429398 Since printf(3) now supports the `j' conversion specifier, use that
when printing intmax_t and uintmax_t.

Forgotten by:	mike
Noticed by:	bde
2002-06-30 05:48:03 +00:00
Julian Elischer
44990b8cb8 Add files that are new for KSE. 2002-06-29 07:04:59 +00:00
Peter Wemm
160554fbf4 Remove a couple of __P() stragglers. 2002-06-29 02:32:34 +00:00
Jake Burkholder
218fd301cd pmap_kremove can no longer be used to remove the magic device mappings
installed with pmap_kenter_flags, since the physical addresses may not
have an associated vm_page.  Add a function to do this.

Tested by:	Tomi Vainio <Tomi.Vainio@Sun.COM>
2002-06-25 15:13:09 +00:00
Maxime Henrion
584884ca0c Add a missing prototype to fix a warning. 2002-06-23 21:29:00 +00:00
Peter Wemm
2f9267ec23 Move the "- 1" into the RQB_FFS(mask) macro itself so that
implementations can provide a base zero ffs function if they wish.
This changes
  #define RQB_FFS(mask) (ffs64(mask))
  foo = RQB_FFS(mask) - 1;
to
  #define RQB_FFS(mask) (ffs64(mask) - 1)
  foo = RQB_FFS(mask);
On some platforms we can get the "- 1" for free, eg: those that use the
C code for ffs64().

Reviewed by:	jake (in principle)
2002-06-20 06:21:20 +00:00
Jake Burkholder
e3957e9d67 Add constants for the min and max prom addresses. Use these instead of
magic numbers.  Use stxa_sync instead of stxa; membar #Sync; to ensure
that no instruction is placed between the two.  This can cause random
corruption even though interrupts are already disabled.
2002-06-17 15:44:10 +00:00
Jake Burkholder
6b3d95e2cf Remove test code. 2002-06-08 07:21:52 +00:00
Jake Burkholder
f5ee661c9b Remove code from trap which is handled in userland now. 2002-06-08 07:17:19 +00:00
Jake Burkholder
acb941ef8f Fix bizarre SMP problems. The secondary cpus sometimes start up with junk
in their tlb which the prom doesn't clear out, so we have to do so manually
before mapping the kernel page table or the cpu can hang due various
conditions which cause undefined behaviour from the tlb.
2002-06-08 07:10:28 +00:00
Jake Burkholder
e7dc92f0f9 Bump TSB_PAGES_SHIFT to 4. Less sucks too much. 2002-06-04 19:40:45 +00:00
Doug Rabson
99bd783419 Move the definition of ElfN_Hashelt to common headers. The only platform
which has a different definition for this is alpha.
2002-05-30 08:32:18 +00:00
Jake Burkholder
f7e0360261 Forward declare struct trapframe. 2002-05-29 19:25:14 +00:00
Jake Burkholder
20bd6675fb Add an MD page flag for tracking if a page is cacheable or not, so that
we don't flush all mappings of a physical page in order to make it
virtually cachable again, if it is already cachable.
2002-05-29 06:12:13 +00:00
Jake Burkholder
1982efc5c2 Merge the code in pv.c into pmap.c directly. Place all page mappings onto
the pv lists in the vm_page, even unmanaged kernel mappings.  This is so
that the virtual cachability of these mappings can be tracked when a page
is mapped to more than one virtual address.  All virtually cachable
mappings of a physical page must have the same virtual colour, or illegal
alises can be created in the data cache.  This is a bit tricky because we
still have to recognize managed and unmanaged mappings, even though they
are all on the pv lists.
2002-05-29 06:08:45 +00:00
Jake Burkholder
e793e4d0b3 Add pv list linkage and a pmap pointer to struct tte. Remove separately
allocated pv entries and use the linkage in the tte for pv operations.
2002-05-29 05:56:05 +00:00
Jake Burkholder
35738638d6 Use a contrived 'tlb_entry' structure for passing the mappings for the
kernel text and data from the loader to the kernel, so that the tte format
is not part of the loader->kernel ABI.
2002-05-29 05:49:59 +00:00
Jake Burkholder
b08270ba0f Remove pmap.pm_pvlist and make the functions that use it no-ops. These are
all optimizations for architectures which have large sparse page tables,
and/or can't put the pv linkage inside of the page table entries.
2002-05-29 05:24:16 +00:00
Jake Burkholder
4d574756ac Convert the interrupt queue from an array to a linked list. Implement
intr_dequeue in asm so that it can easily be modified to do light weight
context switching.
2002-05-25 02:39:28 +00:00
Jake Burkholder
597e13d8c5 Minor style. 2002-05-25 01:44:08 +00:00
Jake Burkholder
d2ac231616 Make the run queue parameters machine dependent. Optimize 64 bit
architectures by using a 64 bit word for the bit array which keeps
track of non-empty queues.

Reviewed by:	peter
2002-05-25 01:12:23 +00:00
Jake Burkholder
2dbb68a495 Update tsb_tte_enter prototype per tsb.c rev 1.20. 2002-05-21 02:15:37 +00:00
Jake Burkholder
f631b588f5 Redefine the tte accessor macros to take a pointer to a tte, instead of the
value of the tag or data field.
Add macros for getting the page shift, size and mask for the physical page
that a tte maps (which may be one of several sizes).
Use the new cache functions for invalidating single pages.
2002-05-21 00:29:02 +00:00
Jake Burkholder
b78213fb0b Add SMP aware cache flushing functions, which operate on a single physical
page.  These send IPIs if necessary in order to keep the caches in sync on
all cpus.
2002-05-20 16:30:47 +00:00
Jake Burkholder
856316e9c6 Forward declare struct trapframe. 2002-05-20 16:12:35 +00:00
Jake Burkholder
f7c81a5182 De-inline the tlb demap functions. These were so big that gcc3.1 refused
to inline them anyway.  ;)
2002-05-20 16:10:17 +00:00
David E. O'Brien
5aecc48bb0 style sync with other platforms. 2002-05-15 16:40:25 +00:00
Poul-Henning Kamp
6380601f64 Move MI stuff out of MD param.h files.
It can all still be overridden in the MD files should need suddenly arise.
2002-05-14 20:35:29 +00:00
Jake Burkholder
20409ddf22 Fix IF_SEXT(val, 32). The constants need to have type long to
handle size > 16.
2002-05-13 04:26:38 +00:00
Jake Burkholder
025c284b8d Add a support macro to convert the 5-bit packed register field of
a floating point instruction into a 6-bit register number for
double and quad arguments.
Make use of the new INSFPdq_RN macro where apporpriate; this
is required for correctly handling the "high" fp registers
(>= %f32).
Fix a number of bugs related to the handling of the high registers
which were caused by using __fpu_[gs]etreg() where __fpu_[gs]etreg64()
should be used (the former can only access the low, single-precision,
registers).

Submitted by:	tmm
2002-05-11 21:20:05 +00:00
David E. O'Brien
fc336fdfbb Gcc 3.1 varargs support. 2002-05-10 02:02:54 +00:00
David E. O'Brien
3393d027da Comment two values I was looking at for GDB. 2002-05-09 02:07:51 +00:00
Jake Burkholder
51ceaefac4 Remove unneeded include. 2002-05-08 04:21:58 +00:00
Jake Burkholder
e289cb8fe7 Add support for an alternate signal trampoline; add a sysarch call to register
an alternate trampoling with the kernel.
2002-04-29 18:08:26 +00:00
Peter Wemm
db17c6fc07 Tidy up some loose ends.
i386/ia64/alpha - catch up to sparc64/ppc:
- replace pmap_kernel() with refs to kernel_pmap
- change kernel_pmap pointer to (&kernel_pmap_store)
  (this is a speedup since ld can set these at compile/link time)
all platforms (as suggested by jake):
- gc unused pmap_reference
- gc unused pmap_destroy
- gc unused struct pmap.pm_count
(we never used pm_count - we track address space sharing at the vmspace)
2002-04-29 07:43:16 +00:00
Mike Barcroft
795aff0ed9 Include <sys/cdefs.h> for definition of __BSD_VISIBLE.
Pointy hat to:	mike
2002-04-12 15:56:45 +00:00
Mike Barcroft
49285705cc Remove the hack for segsz_t from <sys/types.h>; use the normal
_BSD_FOO_T_ method for defining segsz_t.
2002-04-10 15:58:13 +00:00
Mike Barcroft
7f0f1cfd57 Add manifest constants: _LITTLE_ENDIAN, _BIG_ENDIAN, _PDP_ENDIAN, and
_BYTE_ORDER.  These are far more useful than their non-underscored
equivalents as these can be used in restricted namespace environments.
Mark the non-underscored variants as deprecated.
2002-04-10 14:39:14 +00:00
Jake Burkholder
d134a05e90 Oops. machine/emul.h didn't exist yet. 2002-04-09 01:42:19 +00:00
Jake Burkholder
82436f1067 Rename some fields in struct frame to be compatible with NetBSD/OpenBSD,
and add some compatibility defines.  Add fields for ins and locals to
struct reg also for the same reason; these aren't filled in yet because
getting at those registers sucks and I'd rather not save them in the
trapframe just for this.  Reorder struct reg to be ABI compatible as
well.  Add needed include of machine/emul.h.

This gets pmdb (poor man's debugger) from OpenBSD mostly compiling but it
doesn't work yet :(
2002-04-09 00:57:23 +00:00
Jake Burkholder
274ae7b653 Provide an implementation of KTR_CPU that doesn't use pcpu, so we don't
crash and burn if its not setup yet.  Add timestamp, cpu, and (fake) file
and line recording to the asm version of CTR.
2002-04-06 08:40:59 +00:00
Thomas Moestl
6ed31e9112 Add missing header for the eeprom driver frontents. 2002-04-05 02:40:54 +00:00
Thomas Moestl
816663a0b3 Fix crashes that would happen when more than one 4MB page was used to
hold the kernel text, data and loader metadata by not using a fixed slot
to store the TSB page(s) into. Enter fake 8k page entries into the kernel
TSB that cover the 4M kernel page(s), sot that pmap_kenter() will work
without having to treat these pages as a special case.

Problem reported by:	mjacob, obrien
Problem spotted and 4M page handling proposed by:       jake
2002-04-02 17:50:13 +00:00
Thomas Moestl
5320165b09 Remove the superfluous second argument from the IOTSBSLOT() macro. 2002-04-02 17:41:06 +00:00
Thomas Moestl
910d801895 Lower UPA_MEMSTART to 0x1c000000000. This is required for some larger
Enterprise machines.
2002-04-02 17:38:52 +00:00
Matthew Dillon
182da8209d Stage-2 commit of the critical*() code. This re-inlines cpu_critical_enter()
and cpu_critical_exit() and moves associated critical prototypes into their
own header file, <arch>/<arch>/critical.h, which is only included by the
three MI source files that need it.

Backout and re-apply improperly comitted syntactical cleanups made to files
that were still under active development.  Backout improperly comitted program
structure changes that moved localized declarations to the top of two
procedures.  Partially re-apply one of the program structure changes to
move 'mask' into an intermediate block rather then in three separate
sub-blocks to make the code more readable.  Re-integrate bug fixes that Jake
made to the sparc64 code.

Note: In general, developers should not gratuitously move declarations out
of sub-blocks.  They are where they are for reasons of structure, grouping,
readability, compiler-localizability, and to avoid developer-introduced bugs
similar to several found in recent years in the VFS and VM code.

Reviewed by:	jake
2002-04-01 23:51:23 +00:00
Jake Burkholder
d86b2422b9 Move the CTASSERT macro from MD code to systm.h alongside KASSERT so other
code can use it.  This takes a single constant argument and fails to compile
if it is 0 (false).  The main application of this is to make assertions about
structure sizes at compile time, in order to validate assumptions made in
other code.  Examples:

CTASSERT(sizeof(struct foo) == FOO_SIZEOF);
CTASSERT(sizeof(struct foo) == (1 << FOO_SHIFT));

Requested by:	jhb, phk
2002-04-01 21:55:00 +00:00
Matthew Dillon
d74ac6819b Compromise for critical*()/cpu_critical*() recommit. Cleanup the interrupt
disablement assumptions in kern_fork.c by adding another API call,
cpu_critical_fork_exit().  Cleanup the td_savecrit field by moving it
from MI to MD.  Temporarily move cpu_critical*() from <arch>/include/cpufunc.h
to <arch>/<arch>/critical.c (stage-2 will clean this up).

Implement interrupt deferral for i386 that allows interrupts to remain
enabled inside critical sections.  This also fixes an IPI interlock bug,
and requires uses of icu_lock to be enclosed in a true interrupt disablement.

This is the stage-1 commit.  Stage-2 will occur after stage-1 has stabilized,
and will move cpu_critical*() into its own header file(s) + other things.
This commit may break non-i386 architectures in trivial ways.  This should
be temporary.

Reviewed by:	core
Approved by:	core
2002-03-27 05:39:23 +00:00
Thomas Moestl
6267df8595 Add missing declarations. 2002-03-25 04:53:18 +00:00
David E. O'Brien
c543d983fa Guard against redefining __gnuc_va_list. 2002-03-24 11:25:46 +00:00
Thomas Moestl
e8e2c56650 Revamp the busdma implementation a bit:
- change the IOMMU support code so that it supports overcommittting the
  available DVMA memory, while still allocating as lazily as possible.
  This is achieved by limiting the preallocation, and deferring the
  allocation to map load time when it fails. In the latter case, the
  DVMA memory reserved for unloaded maps can be stolen to free up enough
  memory for loading a map.
- allow NULL settings in the method tables, and search the parent tags
  until an appropriate implementation is found. This allows to remove some
  kluges in the old implementation.
2002-03-24 02:50:53 +00:00
Thomas Moestl
464ae30ee6 Make the OpenFirmware interrupt mapping code more generic, to reduce
the bus-dependent code and to be able to support more systems. The core
of the new code is mostly obtained from NetBSD.
Kluge the interrupt routing methods of the psycho and apb drivers so
that an intline of 0 can be handled for now; real routing is still not
possible (all intline registers are preinitialized instead); this will
require a sparc64-specific adaption of the driver for generic PCI-PCI
bridges with a custom routing method to work right.
2002-03-24 02:11:06 +00:00
Thomas Moestl
4b5504494d Add code to print the fault virtual address for uncorrectable DMA errors
caused by IOMMU misses to aid debugging. This will only work on
UltraSPARC-IIi and IIe.
2002-03-23 20:42:23 +00:00
Thomas Moestl
d1e39d7347 De-__P(), de-K&R, remove superfluous comments and prototypes, some
style fixes. No functional changes.
2002-03-23 20:27:32 +00:00
Jake Burkholder
f1bb97a884 Fix a deadlock condition with tlb shootdown ipi delivery. Since ipis are
not blocked by raising the pil, a reciever may be interrupted while holding
a spinlock.  If the sender does not defer interrupts throughout the entire
operation it may be interrupted and try to acquire a spinlock held by a
reciever, leading to a deadlock due to the synchronization used by the
ipi handlers themselves.

Submitted by:	tmm
2002-03-23 04:20:00 +00:00
David E. O'Brien
439a4003ab ASM versions of __FBSDID. 2002-03-23 02:01:27 +00:00
Warner Losh
03742795eb intr_disable returns register_t 2002-03-21 06:21:32 +00:00
Jeff Roberson
74cbb73ba8 Remove references to vm_zone.h and switch over to the new uma API.
Reviewed by:	jake
2002-03-21 02:30:27 +00:00
Alfred Perlstein
91f5bcb812 Remove __P.
profile.h and bus.h were excluded because there is currently WIP.

Reviewed by: tmm
2002-03-21 00:06:55 +00:00
Jeff Roberson
8355f576a9 This is the first part of the new kernel memory allocator. This replaces
malloc(9) and vm_zone with a slab like allocator.

Reviewed by:	arch@
2002-03-19 09:11:49 +00:00
Dag-Erling Smørgrav
a2e0658045 Move the definition of PT_[GS]ET{,DB,FP}REGS from the MD ptrace.h to the
MI ptrace.h, since all platforms define them.  Keep the MD ptrace.h around
for FIX_SSTEP (which is currently only needed on Alpha).
2002-03-16 00:25:53 +00:00
Jake Burkholder
9ad1d32f3d Fix ifdef LOCORE protection. 2002-03-13 06:04:36 +00:00
Jake Burkholder
5ce88ec47e Add support for starting and stopping cpus with ipis.
Stop the other cpus when shutting down or entering the debugger.

Submitted by:	tmm
2002-03-13 04:59:01 +00:00
Jake Burkholder
4968137eb9 Add support for driving the clocks on secondary cpus.
Submitted by:	tmm
2002-03-13 04:38:33 +00:00
Jake Burkholder
1bc589c745 Make IPI_WAIT use a bit mask of the cpus that a pmap is active on and only
wait for those cpus, instead of all of them by using a count.  Oops.
Make the pointer to the mask that the primary cpu spins on volatile, so
gcc doesn't optimize out an important load.  Oops again.
Activate tlb shootdown ipi synchronization now that it works.  We have
all involved cpus wait until all the others are done.  This may not be
necessary, it is mostly for sanity.
Make the trigger level interrupt ipi handler work.

Submitted by:	tmm
2002-03-13 03:43:00 +00:00
Jake Burkholder
453e54056e Add an ATOMIC_CLEAR_INT macro.
Submitted by:	tmm
2002-03-13 03:28:47 +00:00
Thomas Moestl
9390de81a1 Fix the type of some constants, and make some macros safer by casting
the argument.
2002-03-11 03:04:28 +00:00
Thomas Moestl
25aab485b6 Add convenience macros to extract the cc0 and cc1 from format 2 and 3
instructions.
2002-03-11 03:03:35 +00:00
Jake Burkholder
a46877abfc Increase VM_KMEM_SIZE to 16 megs from 12. Define VM_KMEM_SIZE_SCALE so that
the number of physical pages per KVA page allocated scales properly with
memory size.  This fixes problems with kmem_map being too small.

Noticed by:	mike, wollman
Submitted by:	tmm
2002-03-09 23:35:50 +00:00
Mike Barcroft
d846855da8 o Don't require long long support in bswap64() functions.
o In i386's <machine/endian.h>, macros have some advantages over
  inlines, so change some inlines to macros.
o In i386's <machine/endian.h>, ungarbage collect word_swap_int()
  (previously __uint16_swap_uint32), it has some uses on i386's with
  PDP endianness.

Submitted by:	bde

o Move a comment up in <machine/endian.h> that was accidentially moved
  down a few revisions ago.
o Reenable userland's use of optimized inline-asm versions of
  byteorder(3) functions.
o Fix ordering of prototypes vs. redefinition of byteorder(3)
  functions, so that the non-GCC (libc asm) case has proper
  prototypes.
o Add proper prototypes for byteorder(3) functions in <sys/param.h>.
o Prevent redundant duplicate prototypes by making use of the
  _BYTEORDER_PROTOTYPED define.
o Move the bswap16(), bswap32(), bswap64() C functions into MD space
  for platforms in which asm versions don't exist.  This significantly
  reduces the complexity of some things at the cost of duplicate code.

Reviewed by:	bde
2002-03-09 21:02:16 +00:00
Jake Burkholder
4f91e3efb2 Implement delivery of tlb shootdown ipis. This is currently more fine grained
than the other implementations; we have complete control over the tlb, so we
only demap specific pages.  We take advantage of the ranged tlb flush api
to send one ipi for a range of pages, and due to the pm_active optimization
we rarely send ipis for demaps from user pmaps.

Remove now unused routines to load the tlb; this is only done once outside
of the tlb fault handlers.
Minor cleanups to the smp startup code.

This boots multi user with both cpus active on a dual ultra 60 and on a
dual ultra 2.
2002-03-07 06:01:40 +00:00
Jake Burkholder
39028e8396 Modify the tlb demap API to take a pmap instead of a tlb context number.
Due to allocating tlb contexts on the fly, we only ever need to demap the
primary context, non-primary contexts have already been implicitly flushed
by context switching.  All we really need to tell is if its a kernel demap
or not, and its easier just to compare against the kernel_pmap which is a
constant.
2002-03-07 05:25:15 +00:00
Jake Burkholder
eb5b9c0be3 Add support for starting secondary cpus in kernel, as opposed to relying
on the loader to do it.  Improve smp startup code to be less racy and to
defer certain things until the right time.  This almost boots single user
on my dual ultra 60, it is still very fragile:

SMP: AP CPU #1 Launched!
Enter full pathname of shell or RETURN for /bin/sh:
# ls
Debugger("trapsig")
Stopped at      Debugger+0x1c:  ta              %xcc, 1
db> heh
No such command
db>
2002-03-04 07:12:36 +00:00
Jake Burkholder
907164660a Dig the information about which tlb slots were used to map the kernel out
of the metadata passed by the loader.
2002-03-04 07:07:10 +00:00
Jake Burkholder
5573db3f0b Allocate tlb contexts on the fly in cpu_switch, instead of statically 1 to 1
with pmaps.  When the context numbers wrap around we flush all user mappings
from the tlb.  This makes use of the array indexed by cpuid to allow a pmap
to have a different context number on a different cpu.  If the context numbers
are then divided evenly among cpus such that none are shared, we can avoid
sending tlb shootdown ipis in an smp system for non-shared pmaps.  This also
removes a limit of 8192 processes (pmaps) that could be active at any given
time due to running out of tlb contexts.

Inspired by:		the brown book
Crucial bugfix from:	tmm
2002-03-04 05:20:29 +00:00
Thomas Moestl
90ce56c287 Add the following functions/macros to support byte order conversions and
device drivers for bus system with other endinesses than the CPU (using
interfaces compatible to NetBSD):

- bwap16() and bswap32(). These have optimized implementations on some
  architectures; for those that don't, there exist generic implementations.
- macros to convert from a certain byte order to host byte order and vice
  versa, using a naming scheme like le16toh(), htole16().
  These are implemented using the bswap functions.
- stream bus space access functions, which do not perform a byte order
  conversion (while the normal access functions would if the bus endianess
  differs from the CPU endianess).

htons(), htonl(), ntohs() and ntohl() are implemented using the new
functions above for kernel usage. None of the above interfaces is currently
exported to user land.

Make use of the new functions in a few places where local implementations
of the same functionality existed.

Reviewed by:	mike, bde
Tested on alpha by:	mike
2002-02-27 17:16:18 +00:00
Jake Burkholder
df38f87be1 Minimal testing has shown that a 4 page tsb is a nice sweet spot for current
work loads.  It tapers off after that as gcc's working set generally just fits.

compiling bin/csh:

TSB_PAGES = 2
	213.33 real        77.59 user       110.01 sys
TSB_PAGES = 4
	116.43 real        75.78 user        19.16 sys
TSB_PAGES = 8
	119.27 real        76.38 user        18.12 sys

Testing by:	tmm
2002-02-27 06:18:02 +00:00
Jake Burkholder
95a44511f3 Parameterize the number of pages to allocate for the per-cpu area on
PCPU_PAGES.
2002-02-27 06:08:13 +00:00
Jake Burkholder
62ad058292 Make cpu_identify take the value of the ver register and cpuid as arguments
so we can print nice things about non-current cpus.
2002-02-27 06:05:50 +00:00
Jake Burkholder
d689965cb4 Wrap long lines. 2002-02-27 00:28:35 +00:00
Jake Burkholder
5d60dc233a Add a macro for shift of an integer (1 << shift == sizeof). Move the pointer
define to live alongside it.  For kicks assert at compile time that they are
correct.  Use these instead of magic numbers.
2002-02-27 00:21:04 +00:00
David E. O'Brien
db3442f54d Define basic macros required by GDB. 2002-02-26 21:49:46 +00:00
Jake Burkholder
de3fee8992 Convert pmap.pm_context to an array of contexts indexed by cpuid. This
doesn't make sense for SMP right now, but it is a means to an end.
2002-02-26 06:57:30 +00:00
Jake Burkholder
6e5f3d0f0f Allow the user tsb to span multiple pages. Make the default 2 pages for now
until we do some testing to see what's best.  This gives a massive reduction
in system time for processes with a relatively large working set.  The size
of the tsb directly affects the rss size that a user process can keep mapped.
When it starts to get full replacements occur and the process takes a lot of
soft vm faults.  Increasing the default from 1 page to 2 gives the following
before and after numbers for compiling vfs_bio.c:

before:
       14.27 real         6.56 user         5.69 sys
after:
        8.57 real         6.11 user         1.62 sys

This should make self hosted builds more tolerable.
2002-02-26 02:37:43 +00:00
Jake Burkholder
07d99740b6 Remove code to lock the user tsb into the tlb. We can handle faults on it
now, as we do for normal wired kernel memory.
2002-02-25 22:58:41 +00:00
Jake Burkholder
4c4a1a19e8 Implement a nested window state. This avoids attempting to spill a user
window to the user stack while in a nested kernel trap.  We do this for
entry to the kernel from user mode, but if we get an interrupt in kernel
mode while there are still user windows in the cpu, and we attempt to spill
to the user stack, we may take too many nested traps and overflow the trap
stack, causing a red state exception.  This is needed by upcoming changes
to allow the user tsb to not be locked in the tlb.

Reviewed by:	tmm
2002-02-25 18:37:17 +00:00
Jake Burkholder
3c997c536c Modify the tte format to not include the tlb context number and to store the
virtual page number in a much more convenient way; all in one piece.  This
greatly simplifies the comparison for a matching tte, and allows the fault
handlers to be much simpler due to not having to load wierd masks.
Rewrite the tlb fault handlers to account for the new format.  These are also
written to allow faults on the user tsb inside of the fault handlers; the
kernel fault handler must be aware of this and not clobber the other's
registers.  The faults do not yet occur due to other support that is needed
(and still under my desk).

Bug fixes from:	tmm
2002-02-25 04:56:50 +00:00
Jake Burkholder
4d6fc96f19 Add inlines for demapping a range of pages from the itlb and dtlb. This
will be used to reduce the number of tlb shootdown ipis in an smp system
by sending one ipi for a whole range of pages, instead of one per page.
Munge the context demap operations slightly to support demapping a non-primary
context.
2002-02-23 21:10:06 +00:00
Jake Burkholder
e87e98c1d6 Use intr_disable/intr_restore instead of TLB_ATOMIC_START/END.
Submitted by:	tmm
2002-02-23 20:59:35 +00:00
Jake Burkholder
919f71f0fc Adapt the tsb_foreach interface to take a source and a destination pmap so
that it can be used for pmap_copy.  Other consumers ignore the second pmap.
Add statistics gathering for tsb_foreach.
Implement pmap_copy.
2002-02-23 20:25:20 +00:00
Jake Burkholder
502a371561 Add macros to extract the UPA module id from the UPA config register.
This is the hardware cpuid.
2002-02-23 19:54:34 +00:00
Jake Burkholder
40e8552ea0 Include intr_machdep.h only for !LOCORE. 2002-02-23 18:41:34 +00:00
Jake Burkholder
47fc42e6a0 Add metadata types for dtlb and itlb data, and number of slots used. 2002-02-23 17:43:44 +00:00
Mike Barcroft
fd8e4ebc8c o Move NTOHL() and associated macros into <sys/param.h>. These are
deprecated in favor of the POSIX-defined lowercase variants.
o Change all occurrences of NTOHL() and associated marcros in the
  source tree to use the lowercase function variants.
o Add missing license bits to sparc64's <machine/endian.h>.
  Approved by: jake
o Clean up <machine/endian.h> files.
o Remove unused __uint16_swap_uint32() from i386's <machine/endian.h>.
o Remove prototypes for non-existent bswapXX() functions.
o Include <machine/endian.h> in <arpa/inet.h> to define the
  POSIX-required ntohl() family of functions.
o Do similar things to expose the ntohl() family in libstand, <netinet/in.h>,
  and <sys/param.h>.
o Prepend underscores to the ntohl() family to help deal with
  complexities associated with having MD (asm and inline) versions, and
  having to prevent exposure of these functions in other headers that
  happen to make use of endian-specific defines.
o Create weak aliases to the canonical function name to help deal with
  third-party software forgetting to include an appropriate header.
o Remove some now unneeded pollution from <sys/types.h>.
o Add missing <arpa/inet.h> includes in userland.

Tested on:	alpha, i386
Reviewed by:	bde, jake, tmm
2002-02-18 20:35:27 +00:00
Garrett Wollman
3b7a4c4b1d Resurrect one of the easiest changes from my big include files roll-up
patch from a year ago: give file flags their own type.  This does not
(yet) change the type used by system calls or library functions.
The underlying type was chosen to match what is returned by stat().
2002-02-15 22:15:39 +00:00
Thomas Moestl
5dc4151c36 Add a delta missed in the last iommu.c commit. This unbreaks the sparc64
kernel build.

Pointy hat to:	tmm
2002-02-15 14:48:54 +00:00
Thomas Moestl
9a60579c15 Avoid crashing in early boot when WITNESS is enabled by moving the
mtx_init() for intr_table_lock after the globaldata pointer
initialization.
2002-02-13 16:36:44 +00:00
Thomas Moestl
fd2ee897e4 Use stxa_sync() when accessing the diagnostic registers to invalidate
caches; this is needed to avoid undefined behaviour.
Clean up a bit.
2002-02-13 16:20:38 +00:00
Thomas Moestl
bb2b9370c7 Add support for the counter-timer which is included in the Sun U2S and
U2P bridges as a time counter.
2002-02-13 16:16:36 +00:00
Thomas Moestl
e6c7af37bc Merge r1.42 of iommu.c and r1.9 of iommuvar.h from NetBSD (this adds
support for managing both streaming caches on psycho pairs).
Use explicit bus space accesses instead of mapping the device memory into
kva.
Move DVMA allocation to the map creation/dma memory allocation functions.
2002-02-13 15:59:17 +00:00
Thomas Moestl
64bc899300 Clean up bus space debugging support; change sparc64_bus_mem_map() to
take a bus tag and handle as argument instead of a i/o space id and a
physical address, now that nexus handles device memory resource
allocations.
2002-02-13 15:51:57 +00:00
Thomas Moestl
68716de3ec Define constants for the CPU implementation id; export the dectected id
as cpu_impl.
2002-02-13 15:47:12 +00:00
Thomas Moestl
9fb2b0d55e Add a few new functions/macros: intr_disable() and intr_restore() to
disable interrupts completely, and stxa_sync(), which performs a store
immediately followed by a membar #Sync with interrupts disabled (this
is needed for writes to diagnostic registers).
2002-02-13 15:40:05 +00:00
David E. O'Brien
837d5e7485 Add this FreeBSD standard header. 2002-02-10 14:27:20 +00:00
Jake Burkholder
d2d3e8a55a Add extern to avoid sloppy common style declarations.
Tripped over by:	jhb, mux@sneakerz.org
2002-01-16 14:28:50 +00:00
Thomas Moestl
d7ff50a055 Add upa.h, which I had previously forgotten, to unbreak the sparc64
kernel build.

Pointy hat to:	tmm
2002-01-08 16:25:51 +00:00
Jake Burkholder
6deb695c1d Add initial smp support. This gets as far as allowing the secondary
cpu(s) into the kernel, and sync-ing them up to "kernel" mode so we can
send them ipis, which also work.

Thanks to John Baldwin for providing me with access to the hardware
that made this possible.

Parts obtained from:	bsd/os
2002-01-08 05:50:26 +00:00
Jake Burkholder
01cad5de12 Add a macro for getting the tlbs (itlb and/or dtlb) which the given
tte may be mapped by.
2002-01-08 05:07:58 +00:00
Jake Burkholder
70f550ae58 Prototype pmap_map_tsb(). 2002-01-08 05:06:39 +00:00
Jake Burkholder
dff34dde25 Remove PANIC_STACK_PAGES which is no longer used.
Redefine the compile time assertion macro to take one parameter.
2002-01-08 05:05:42 +00:00
Jake Burkholder
d2746ddb32 Add declarations needed by last commit. 2002-01-08 05:03:36 +00:00
Jake Burkholder
338f7e3e47 Add a md field to pcpu for the upa module id.
Remove the alt_stack field.
Use the defines for the register variables declared in C, so that they
don't get out of sync with the assembler.
2002-01-08 04:40:13 +00:00
Jake Burkholder
f25af321eb Define CKLF_PC in terms of TRAPF_PC. 2002-01-08 04:36:53 +00:00
Jake Burkholder
c0e12e9356 Add a mov() macro, which is used in conjunction with the register defines
for setting reserved global registers from c.
2002-01-08 04:36:01 +00:00
Jake Burkholder
2a32c6cea1 Update comments and defines to reflect that normal and alternate g6 point
to the current pcb.
Remove interrupt global defines; they use PCPU_REG now.
Move ATOMIC_INC_INT here from exception.s, add ATOMIC_DEC_INT.
Add a KASSERT macro for use in assembler.
2002-01-08 04:34:20 +00:00
Jake Burkholder
3a3b7ddc5a Add asis for the upa config reg, which contains the hardware cpu id, and
for the interrupt send register, which is used for dispatching ipis.
2002-01-08 04:29:50 +00:00
Thomas Moestl
62ec4add59 1. Implement an optimization for pmap_remove() and pmap_protect(): if a
substantial fraction of the number of entries of tte's in the tsb
   would need to be looked up, traverse the tsb instead. This is crucial
   in some places, e.g. when swapping out a process, where a certain
   pmap_remove() call would take very long time to complete without this.
2. Implement pmap_qenter_flags(), which will become used later
3. Reactivate the instruction cache flush done when mapping as executable.
   This is required e.g. when executing files via NFS, but is known to
   cause problems on UltraSPARC-IIe CPU's. If you have such a CPU, you
   will need to comment this call out for now.

Submitted by:	jake (3)
2002-01-02 18:49:20 +00:00
Thomas Moestl
ca8712b098 Correct the defintion of struct ofw_upa_regs, and use it instead of
struct ofw_nexus_reg. Implement UPA device memory management in the
nexus driver.
Adapt the psycho driver to these changes, and do some minor cleanup work
while being there.
2002-01-02 18:27:13 +00:00
Jake Burkholder
2f3a74c449 Define __ASM__ so that libc will know not to define C things. 2002-01-01 21:21:05 +00:00
Jake Burkholder
947f30e25e Add a define for the fp restore soft trap type.
Only declare C things if __ASM__ is not defined.
2002-01-01 21:19:46 +00:00
Jake Burkholder
1ca0488670 Implement sysarch(SPARC_UTRAP_INSTALL).
Forgot this file in last commit.
2002-01-01 20:57:51 +00:00
Jake Burkholder
cbe522d307 Implement user trap delivery as specified by the sparc abi. This provides
an efficient way for the kernel to bounce certain mundane traps back to
userland for handling there.  A user trap handler returns directly to the
trapping user code, rather than going through the kernel again.  Only a
handful of instructions are actually executed in kernel mode.
Implement sysarch(SPARC_UTRAP_INSTALL).
Add code to handle sharing of the user trap table across forks and unsharing
at exec.

This can be used to implement efficient tracking of floating point register
usage in userland, fe by a thread library, and to handle alignment fault
fixups and instruction emulation in userland, for which the code may need
to be different for 32bit and 64bit binaries.
2002-01-01 20:56:28 +00:00
Jake Burkholder
d79083a390 Add a panic stack, which is used as a known good stack when there is
something wrong with the kernel stack.
Add code to check the kernel stack pointer in various important places
and try hard not to go down in flames if its wrong.
2002-01-01 20:26:46 +00:00
Thomas Moestl
9c5781cdd0 Add bus_common.h, which contains some definiton that apply to both PCI
and SBus.

Obtained from:	NetBSD
2001-12-30 16:13:05 +00:00
Jake Burkholder
18f2fb66c6 Add a header for user trap types required by the sparc abi.
For simplicity the corresponding kernel types use the same
numerical values.
2001-12-29 08:59:33 +00:00
Jake Burkholder
9030565569 Adapt for used by upcoming fp emulation code.
Comment.

Submitted by:	tmm
2001-12-29 08:55:56 +00:00
Jake Burkholder
3be7dfb8b4 Prototype dcache_inval_phys.
Submitted by:	tmm
2001-12-29 08:35:49 +00:00
Jake Burkholder
1e903121eb Add comments as to why VM_MAXUSER_ADDRESS is magic (abitrary).
Define the KVA_RANGE in terms of ttes, not sttes.
Remove UPT_MIN_ADDRESS.  We no longer use a hard coded address for
the user tsb.
2001-12-29 08:25:43 +00:00
Jake Burkholder
5ff798a5e0 Make tte bit constants explicitly unsigned and long.
Add a wierd soft bit.
Remove struct stte.
2001-12-29 08:24:02 +00:00
Jake Burkholder
a4e1e6e5de Add definitions for dcache color bits, which may move to cache.h.
Add fields to md_page for tracking virtual page color, and pv entry
lists.
Fix pmap_track_modified to work for non-kernel pmaps.  This is due to
kernel virtual addresses potentially overlapping with userland addresses.
2001-12-29 08:19:24 +00:00
Jake Burkholder
e3d6851148 Implement pv entries as separate structures from the ttes, like other
architectures do.
2001-12-29 08:17:16 +00:00
Jake Burkholder
624eb79821 Remove support for multi level tsbs, making this code much simpler and
much less magic, fragile, broken.  Use ttes rather than sttes.
We still use the replacement scheme used by the original code, which
is pretty cool.

Many crucial bug fixes from:	tmm
2001-12-29 08:15:43 +00:00
Jake Burkholder
eddb1f8617 Rename definitions to better match the hardware wstate fields.
Don't include WSTATE_TRANSITION in WSTATE_NORMAL_MASK.
2001-12-29 07:12:30 +00:00
Jake Burkholder
f9a756b838 Add definitions for TSTATE_MM_* and TSTATE_{I,X}CC_*.
Implement TSTATE_SECURE in terms of PSTATE_SECURE.
2001-12-29 07:11:00 +00:00
Jake Burkholder
529110b963 Rename and renumber trap types to comply with the user trap types as
specified by the sparc abi.  We use numerically higher values for all
internal kernel types.
Remove soft trap types which need to be exposed to userland.  They will
move to utrap.h.
2001-12-29 07:09:50 +00:00
Jake Burkholder
4339fe0983 1. Certain tlb operations need to be atomic, so disable interrupts for
their duration.  This is still only effective as long as they are
   only used in the static kernel.  Code in modules may cause instruction
   faults which makes these break in different ways anyway.
2. Add a load bearing membar #Sync.
3. Add an inline for demapping an entire context.

Submitted by:	tmm (1, 2)
2001-12-29 07:07:35 +00:00
Jake Burkholder
871e39a240 jmpbuf is no longer a ucontext_t since it does not need to be passed
to sigreturn.
Add definitions for array offsets.
2001-12-29 07:03:09 +00:00
Jake Burkholder
65f152dbf9 Add fprs to struct fpreg. 2001-12-29 07:02:12 +00:00
Jake Burkholder
ecb8e79ca8 Define PSTATE_MM_MASK in terms of PSTATE_MM_SIZE.
Implement PSTATE_SECURE.
2001-12-29 07:01:34 +00:00
Jake Burkholder
df52646bb5 Remove pcb_y. It has moved to trapframe. 2001-12-29 07:00:30 +00:00
Jake Burkholder
ded2ba2017 Don't concatentate __func__.
Make page size constants explicitly long and unsigned.
Add a macro for compile time assertions.
2001-12-29 07:00:04 +00:00
Jake Burkholder
dc551940fc Make it clear that IH_SHIFT is expected to be that of a pointer.
Make intr_handlers an array of function pointers instead of
small structures.
2001-12-29 06:57:55 +00:00
Jake Burkholder
8c3d8ad946 Add definitions for magic numbers used in asm.
Bloat trapframe with many extra fields so we don't need extra structures.
Use small data types where possible.
Remove second copy of TF_DONE.
Remove mmuframe.
2001-12-29 06:56:11 +00:00
Jake Burkholder
5a99bf0775 Change fpblock to be an array of ints instead longs.
Change fp_init_thread to take a thread instead of a pcb so we
can get at the trapframe.
2001-12-29 06:53:19 +00:00
Jake Burkholder
f664fe9075 Add "memory" to the clobber list for membars.
Submitted by:	tmm
2001-12-29 06:51:50 +00:00
Jake Burkholder
7bb428295f Implement CLKF_USERMODE so that user time is accounted properly.
Submitted by:	tmm
2001-12-29 06:51:14 +00:00
Jake Burkholder
812a805e24 Add definitions for the number of bits in the icc and xcc fields
of the ccr, as well as the shifts and masks for each.

Submitted by:	tmm
2001-12-29 06:50:25 +00:00
Jake Burkholder
a20901cdfd Use ASI_P instead of ASI_N if _KERNEL isn't defined so that these
can be used in userland.

Submitted by:	tmm
2001-12-29 06:48:43 +00:00
Jake Burkholder
bfe6f90832 Add macros for dedicated register variables, for use in assmebler.
Add a PUTS macro.
2001-12-29 06:47:50 +00:00
Jake Burkholder
c54d40ba8b - Add a file for machine dependant loader metdata types. Include this in
machdep.c.
- Adapt to critical_* changes.
2001-12-23 07:02:23 +00:00
John Baldwin
7e1f6dfe9d Modify the critical section API as follows:
- The MD functions critical_enter/exit are renamed to start with a cpu_
  prefix.
- MI wrapper functions critical_enter/exit maintain a per-thread nesting
  count and a per-thread critical section saved state set when entering
  a critical section while at nesting level 0 and restored when exiting
  to nesting level 0.  This moves the saved state out of spin mutexes so
  that interlocking spin mutexes works properly.
- Most low-level MD code that used critical_enter/exit now use
  cpu_critical_enter/exit.  MI code such as device drivers and spin
  mutexes use the MI wrappers.  Note that since the MI wrappers store
  the state in the current thread, they do not have any return values or
  arguments.
- mtx_intr_enable() is replaced with a constant CRITICAL_FORK which is
  assigned to curthread->td_savecrit during fork_exit().

Tested on:	i386, alpha
2001-12-18 00:27:18 +00:00
John Baldwin
0bbc882680 Overhaul the per-CPU support a bit:
- The MI portions of struct globaldata have been consolidated into a MI
  struct pcpu.  The MD per-CPU data are specified via a macro defined in
  machine/pcpu.h.  A macro was chosen over a struct mdpcpu so that the
  interface would be cleaner (PCPU_GET(my_md_field) vs.
  PCPU_GET(md.md_my_md_field)).
- All references to globaldata are changed to pcpu instead.  In a UP kernel,
  this data was stored as global variables which is where the original name
  came from.  In an SMP world this data is per-CPU and ideally private to each
  CPU outside of the context of debuggers.  This also included combining
  machine/globaldata.h and machine/globals.h into machine/pcpu.h.
- The pointer to the thread using the FPU on i386 was renamed from
  npxthread to fpcurthread to be identical with other architectures.
- Make the show pcpu ddb command MI with a MD callout to display MD
  fields.
- The globaldata_register() function was renamed to pcpu_init() and now
  init's MI fields of a struct pcpu in addition to registering it with
  the internal array and list.
- A pcpu_destroy() function was added to remove a struct pcpu from the
  internal array and list.

Tested on:	alpha, i386
Reviewed by:	peter, jake
2001-12-11 23:33:44 +00:00
David E. O'Brien
acdff873d8 style(9) 2001-12-09 19:12:07 +00:00
Mike Barcroft
de2656d0ed o Stop abusing MD headers with non-MD types.
o Hide nonstandard functions and types in <netinet/in.h> when
  _POSIX_SOURCE is defined.
o Add some missing types (required by POSIX.1-200x) to <netinet/in.h>.
o Restore vendor ID from Rev 1.1 in <netinet/in.h> and make use of new
  __FBSDID() macro.
o Fix some miscellaneous issues in <arpa/inet.h>.
o Correct final argument for the inet_ntop() function (POSIX.1-200x).
o Get rid of the namespace pollution from <sys/types.h> in
  <arpa/inet.h>.

Reviewed by:		fenner
Partially submitted by:	bde
2001-12-01 03:43:01 +00:00
Thomas Moestl
f8129f72da Add a structure defintion for the id prom contents.
Obtained from:	NetBSD
2001-11-18 20:50:11 +00:00
Jake Burkholder
656ad29399 Standardize idempotentcy ifdefs. 2001-11-18 20:30:16 +00:00
Jake Burkholder
fcada3d4ed Add kernel headers needed to build libc. Some are bogus and/or just enough
to compile.

Mostly obtained from:	netbsd
2001-11-18 17:56:46 +00:00
Jake Burkholder
c8d87e81dd Make jmpbuf the same size as ucontext_t so that it can be passed
to sigreturn.

Obtained from:	alpha
2001-11-18 04:04:35 +00:00
Jake Burkholder
86f466074c 1. Split fp.h into fp.h and fsr.h so that the latter can be included
in asm files.
2. Temporarily cause subnormal operands in floating point operations
   to be treated as zeros so that comlpetion of the operation does not
   need to be emulated.
3. Catch fp_exception_other and correctly skip over the unfinished
   instruction, but basically ignore them.  Emulating the instruction
   is not yet supported.
4. Zero td_retval[1] as well in syscall().

Submitted by:	tmm (2, 3)
2001-11-18 04:00:22 +00:00
Jake Burkholder
d5a7911f4a 1. Remove kdbframe. Bad idea.
2. Add a TF_DONE macro, which fiddles a trapframe to make the retry on
   return from traps act like a done (advance past the trapping
   instruction instead of re-executing).
3. Flush the windows before entering the debugger, since it is no
   longer done in the breakpoint trap vector.
4. Print a warning if trace <pid> is attempted, it is not yet implemented.
5. Print traps better and decode system calls in traces.

Submitted by:	rwatson (4)
2001-11-18 03:41:12 +00:00
Jake Burkholder
bc40966754 Implement SET. Set execption.s 1.12.
Submitted by:	tmm
2001-11-18 03:31:01 +00:00
Jake Burkholder
cb67f0018f 1. Convert the tstate saved in the pcb to a pstate and test for PSTATE_PEF
to determine if a process is using floating point. in order to avoid
   sign extending a 13 bit immediate.
2. We don't need to context switch cwp anymore, it is better to just
   fiddle the save tstate on return from traps.  See exception.s 1.10
   and 1.12.
3. Completely remove pcb_cwp.
4. Implement vmapbuf, vunmapbuf and vm_fault_quick.  Completely remove
   TODOs from vm_machdep.c (yay!).

Submitted by:	tmm (1, 3, 4)
Obtained from:	existing archs (4)
2001-11-18 03:28:28 +00:00
Jake Burkholder
62d5557bb9 1. Remove bootinfo and just pass loader metadata to the kernel.
2. Remove mcontext.mc_sp, it is redundant.  Adjust spare space to make
   ucontext_t a nice size.
3. Raise pil in the debugger.

Submitted by:	tmm (3)
2001-11-18 03:02:53 +00:00
Jake Burkholder
4d5e57d87d 1. Implement ascopyto() and ascopyfrom() for copying to an alternate address
space from kernel space and from an alternate address space to kernel
   space.
2. Remove the unused and unprototyped physcopy() and physzero() and replace
   with the more versatile ascopy() and aszero(), inspired by the above.
   These can be used to copy and zero physical pages of memory without mapping
   them into kernel space first.
3. Use magic numbers for the offsets in the jmpbuf structure like other
   platforms.
4. Use SET.

Submitted by: 	tmm (1, 4)
2001-11-18 02:47:26 +00:00
Thomas Moestl
606d0094b2 Support for the UltraSpac DVMA MMU (IOMMU), ported from NetBSD. 2001-11-09 20:14:41 +00:00
Thomas Moestl
785fad4c2b Add some OpenFirmware bus support code and definitions. 2001-11-09 20:10:55 +00:00
Thomas Moestl
11dd9255e9 Add bus_space and busdma support for sparc64. 2001-11-09 20:05:53 +00:00
Thomas Moestl
d1994ead81 Add a nexus device for sparc64, which uses the OpenFirmware to attach UPA
devices (mostly host bridges) and handles interrupt allocation and setup.
2001-11-09 20:01:25 +00:00
Thomas Moestl
7478d2e8b2 Header file updates needed for the cache code: add/correct some ASI
definitions and add PAGE_*_MIN and -_MAX macros.
2001-11-09 19:37:52 +00:00
Thomas Moestl
3c78eb652c Add cache handling code for sparc64. 2001-11-09 19:12:06 +00:00
Thomas Moestl
9b3b51bcab Add code to emulate unimplemented (non-fp) instructions and to fixup
unaligned accesses, and instr.h, which contrains definitions for the
sparc64 instruction set (partly from NetBSD).
Make use of some definitions from instr.h in db_disasm.c.
2001-11-06 20:13:44 +00:00
Thomas Moestl
cd785cc1e7 Add optimized implementations of in_cksum_skip() and related functions
for sparc64.
2001-11-06 20:05:01 +00:00
Mike Barcroft
0ac2d551f2 o Add new header <sys/stdint.h>.
o Make <stdint.h> a symbolic link to <sys/stdint.h>.
o Move most of <sys/inttypes.h> into <sys/stdint.h>, as per C99.
o Remove <sys/inttypes.h>.
o Adjust includes in sys/types.h and boot/efi/include/ia64/efibind.h
  to reflect new location of integer types in <sys/stdint.h>.
o Remove previously symbolicly linked <inttypes.h>, instead create a
  new file.
o Add MD headers <machine/_inttypes.h> from NetBSD.
o Include <sys/stdint.h> in <inttypes.h>, as required by C99; and
  include <machine/_inttypes.h> in <inttypes.h>, to fill in the
  remaining requirements for <inttypes.h>.
o Add additional integer types in <machine/ansi.h> and
  <machine/limits.h> which are included via <sys/stdint.h>.

Partially obtain from:	NetBSD
Tested on:		alpha, i386
Discussed on:		freebsd-standards@bostonradio.org
Reviewed by:		bde, fenner, obrien, wollman
2001-11-02 18:05:43 +00:00
Jake Burkholder
06c4f91f00 Implement elf_reloc. This makes klds work.
Obtained from:	netbsd
2001-10-27 07:09:40 +00:00
Mike Barcroft
3a72286480 Remove funky right justification.
Pointed out by:	bde
2001-10-23 00:42:15 +00:00
Dag-Erling Smørgrav
1f04261973 [partially forced commit due to pilot error in earlier commit attempt]
{set,fill}_{,fp,db}regs() fixup:

 - Add dummy {set,fill}_dbregs() on architectures that don't have them.

 - KSEfy the powerpc versions (struct proc -> struct thread).

 - Some architectures had the prototypes in md_var.h, some in reg.h, and
   some in both; for consistency, move them to reg.h on all platforms.

These functions aren't really MD (the implementation is MD, but the interface
is MI), so they should move to an MI header, but I haven't figured out which
one yet.

Run-tested on i386, build-tested on Alpha, untested on other platforms.
2001-10-21 22:16:48 +00:00
Jake Burkholder
58a822cfc2 Fix get_cyclecount. Wrap in ifdef _KERNEL. 2001-10-20 18:51:10 +00:00
Jake Burkholder
e47e7481db Add a definition for normal kernel window state. 2001-10-20 17:08:33 +00:00
Jake Burkholder
6ef2d9a02d Parameterize the size of the kernel virtual address space on KVA_PAGES.
Don't use a hard coded address constant for the virtual address of the
kernel tsb.  Allocate kernel virtual address space for the kernel tsb
at runtime.
Remove unused parameter to pmap_bootstrap.
Adapt pmap.c to use KVA_PAGES.
Map the message buffer too.
Add some traces.
Implement pmap_protect.
2001-10-20 16:17:04 +00:00
Jake Burkholder
209cf80d43 Add support for physical address hardware watchpoints. 2001-10-20 16:04:39 +00:00
Jake Burkholder
6c3dcb9735 Change the stray count in struct intr_vector to a vector number that can
be used to index tables of counters.
Remove intr_dispatch() inline, it is implemented directly in tl*_intr now.
Count stray interrupts in a table of counters like intrcnt.
Disable interrupts briefly when setting up the interrupt vector table.
We must disable interrupts completely, not just raise the pil.
Pass pointers to the intr_vector structures rather than a vector number
to sched_ithd and intr_stray.
2001-10-20 16:03:41 +00:00
Jake Burkholder
44217f38a5 Remove traces that are loud and not that useful. Remove nested include
of ktr.h.
2001-10-20 15:58:31 +00:00
Jake Burkholder
c93b7ccb41 Remove an unused macro arg. 2001-10-20 15:57:39 +00:00
Jake Burkholder
4fd2757c37 Include a whole interrupt queue in struct globaldata instead of just a
pointer.  Minor style.
2001-10-20 15:57:09 +00:00
Jake Burkholder
3d6e05660a Add fields for boothowto and the kernel environment to boothowto. 2001-10-20 15:55:42 +00:00
David E. O'Brien
9f9bd82e15 Try two on the preprocessing logic.
Reviewed by:	ru
2001-10-19 20:01:01 +00:00
David E. O'Brien
4b16cf4f8a Blah, fix braino where ru had to remind me of proper preprocessor syntax.
Bad fingers, no cookie.
2001-10-19 19:17:11 +00:00
David E. O'Brien
e3ddd70789 My attempts at minimizing the number of #def's got me in trouble. 2001-10-18 16:07:21 +00:00
David E. O'Brien
4a3391b5a1 Add support for "__gnuc_va_list". Some overly "smart" libraries assume
the existence of the __gnuc_va_list type[*] because our compiler is GCC.

[*] __gnuc_va_list is defined in the GCC ginclude/stdarg.h replacement
headerwhich we don't use.
2001-10-18 00:27:39 +00:00
Thomas Moestl
84bcb99195 Add inthand_add() and inthand_remove() for use by the MD bus code and
some glue code.
2001-10-12 16:06:41 +00:00
Thomas Moestl
b6aaa482ef Save the floating point context to the right pcb in cpu_fork(), and add
an empty stub for is_physical_memory().
2001-10-12 15:58:48 +00:00
Thomas Moestl
c2f5c600c1 Make the NTOHL, NTOHS, HTONL and HTONS macros (which are nops on
sparc64) empty to avoid compiler warnings.
2001-10-12 15:55:45 +00:00
Thomas Moestl
4bc38523ec Add pmap_kenter_flags(), which is used by MD bus code that will be
committed soon, add a stub form pmap_kenter_temporary(), and implement
pmap_extract() and pmap_kextract().
2001-10-12 15:49:51 +00:00
Paul Saab
cbc89bfbfe Make MAXTSIZ, DFLDSIZ, MAXDSIZ, DFLSSIZ, MAXSSIZ, SGROWSIZ loader
tunable.

Reviewed by:	peter
MFC after:	2 weeks
2001-10-10 23:06:54 +00:00
Jake Burkholder
fc67f24833 Add contents to struct *reg. 2001-09-30 19:59:07 +00:00
Jake Burkholder
c4bc2cc714 Use %ver to identify the cpu instead of openfirmware.
Submitted by:	robert
2001-09-30 19:45:34 +00:00
Jake Burkholder
b34f88ee74 Add a place holder for PSTATE_SECURE, which detects if user code it
trying to set bad pstate bits.
2001-09-30 19:42:34 +00:00
Jake Burkholder
e5e8823f37 Split the low level trap code into trap, interrupt and syscall, its
easier and hopefully this code is done changing radically.

Don't use the mmu tlb register to address the kernel page table, nor
the 8k pointer register.  The hardware will do some of the page table
lookup by storing the the base address in an internal register and
calculating the address of the tte in the table.  However it is limited
to a 1 meg tsb, which only maps 512 megs.  The kernel page table only
has one level, so its easy to just do it by hand, which has the advantage
of supporting abitrary amounts of kvm and only costs a few more instructions.

Increase kvm to 1 gig now that its easy to do so and so we don't waste
most of a 4 meg page.

Fix some traces.  Fix more proc locking.

Call tsb_stte_promote if we get a soft fault on a mapping in the upper
levels of the tsb.  If there is an invalid or unreferenced mapping
in the primary tsb, it will be replaced.

Immediately fail for faults occuring in {f,s}uswintr.
2001-09-30 19:41:20 +00:00
Jake Burkholder
956856ae06 Move the kernel to end of the first 4 gigabytes of address space, so that
one 4 meg page can map both the kernel and the openfirmware mappings.
Add the openfirmware mappings to the kernel tsb so we can call the firmware
on the kernel trap table and access kernel memory normally.
Implement pmap_swapout_proc, pmap_swapin_proc, pmap_swapout_thread,
pmap_swapin_thread, pmap_activate, pmap_page_exists, and pmap_phys_address.
2001-09-30 19:03:22 +00:00
Jake Burkholder
954f0d930e Add a macro to get the context from a tte tag, not necesarily a whole
tte.  Remove the old inline.
2001-09-30 18:55:05 +00:00
Jake Burkholder
b71c31cefa Don't use types that require other headers. 2001-09-30 18:52:17 +00:00
Jake Burkholder
6df08a9593 Wrap hardware trap types in ifdef _kernel. 2001-09-30 18:51:18 +00:00
Jake Burkholder
18ef271232 Move the pcb the to the top of the kernel stack.
Add a guard page at the bottom of the kernel stack.  Its unclear how easy
it will be to detect these faults and do something useful.
Setup the registers on exec how the c runtime expects.
Implement various {fill,set}_*regs.
Fix proc locking.
2001-09-30 18:48:37 +00:00
Jake Burkholder
75c6786401 Don't overflow the ktr buffer <gulp>. 2001-09-30 18:42:56 +00:00
Jake Burkholder
c81f893d0c Implement PCPU_ADDR. Align functions on 16 bytes boundaries. 2001-09-30 18:41:57 +00:00
John Baldwin
fd54558a83 - If we ever do the per-cpu KTR stuff, the index won't be volatile as it
will be private to each CPU.
- Re-style(9) the globaldata structures.  There really needs to be a MI
  struct pcpu that has a MD struct mdpcpu member at some point.
2001-09-18 21:46:26 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
David E. O'Brien
bcc9d95fe0 style(9) the structure definitions. 2001-09-05 05:18:35 +00:00
David E. O'Brien
68b0bc4fa3 style(9) the structure names 2001-09-04 09:23:23 +00:00
Jake Burkholder
cc8b4c0416 Change tf_arg to uintptr_t from void * to reflect the fact that
non-pointer values may be passed in it.  Add appropriate casts.

The interrupt type is now passed in tf_arg instead tf_type.
2001-09-03 23:13:42 +00:00
Jake Burkholder
880a354a4a Implement a slightly different window spill/fill algorithm for dealing
with user windows in kernel mode.  We split the windows using %otherwin,
but instead of spilling user window directly to the pcb, we attempt to
spill to user space.  If this fails because a stack page is not resident
(or the stack is smashed), the fault handler at tl 2 will detect the
situation and resume at tl 1 again where recovery code can spill to the
pcb.  Any windows that have been saved to the pcb will be copied out to
the user stack on return from kernel mode.

Add a first stab at 32 bit window handling.  This uses much of the same
recovery code as above because the alignment of the stack pointer is used
to detect 32 bit code.  Attempting to spill a 32 bit window to a 64 bit
stack, or vice versa, will cause an alignment fault.  The recovery code
then changes the window state to vector to a 32 bit spill/fill handler
and retries the faulting instruction.

Add ktr traces in useful places during trap processing.

Adjust comments to reflect new code and add many more.
2001-09-03 23:10:45 +00:00
Jake Burkholder
ce1e7a70b9 Move the alternate global register stack to struct globaldata. 2001-09-03 22:58:05 +00:00
Jake Burkholder
8cf38f95f7 Add ktr traces. 2001-09-03 22:57:21 +00:00
Jake Burkholder
ccc64d13f3 Implement pv_bit_count which is used by pmap_ts_referenced.
Remove the modified tte bit and add a softwrite bit.  Mappings are only
writeable if they have been written to, thus in general modify just
duplicates the write bit.  The softwrite bit makes it easier to distinguish
mappings which should be writeable but are not yet modified.

Move the exec bit down one, it was being sign extended when used as an
immediate operand.

Use the lock bit to mean tsb page and remove the tsb bit.  These are the
only form of locked (tsb) entries we support and we need to conserve bits
where possible.

Implement pmap_copy_page and pmap_is_modified and friends.

Detect mappings that are being being upgraded from read-only to read-write
due to copy-on-write and update the write bit appropriately.

Make trap_mmu_fault do the right thing for protection faults, which is
necessary to implement copy on write correctly.  Also handle a bunch
more userland trap types and add ktr traces.
2001-09-03 22:55:12 +00:00
Jake Burkholder
9a0f54a4de Implement signals. 2001-09-03 22:41:40 +00:00
Jake Burkholder
a5ffa592c7 Move %ver definitions from pstate.h to ver.h. Add definitions for normal
kernel pstate values, which include a memory store order override.
2001-09-03 22:36:11 +00:00
Jake Burkholder
a78f8e2104 Add simple macros for tracing in assembler files. There are quite
a few places where we cannot even call a function, and these have
proven to be very useful debugging tools for such situations.
2001-09-03 22:32:49 +00:00
Jake Burkholder
3d450a75c1 Use the correct copyrights. Note where most of this came from.
Requested by:	obrien
2001-09-03 22:27:23 +00:00
Jake Burkholder
e586bed159 Bump UPAGES to 4. The pcb can be rather large. 2001-09-03 22:19:36 +00:00
Jake Burkholder
4324ea045e mtx_savecrit is a pil level, not a pstate value, thus mtx_intr_enable
was not doing its thing.
2001-09-03 22:19:04 +00:00
Jake Burkholder
275e4fcf0a Add a flushw() macro. 2001-09-03 22:13:53 +00:00
Jake Burkholder
f8da586016 Add atomic_load and store functions without membars, fwiw. 2001-09-03 22:03:25 +00:00
Jake Burkholder
e19e5d8968 The definition for ASI_IMMU_TAG_TARGET_REG was wrong. Sort. 2001-09-03 22:02:15 +00:00
Mike Barcroft
03516cfeb0 o Remove some GCCisms in src/powerpc/include/endian.h.
o Unify <machine/endian.h>'s across all architectures.
o Make bswapXX() functions use a different spelling of u_int16_t and
  friends to reduce namespace pollution.  The bswapXX() functions
  don't actually exist, but we'll probably import these at some
  point.  Atleast one driver (if_de) depends on bswapXX() for big
  endian cases.
o Deprecate byteorder(3) prototypes from <sys/types.h>, these are
  now prototyped indirectly in <arpa/inet.h>.
o Deprecate in_addr_t and in_port_t typedefs in <sys/types.h>, these
  are now typedef'd in <arpa/inet.h>.
o Change byteorder(3) prototypes to use standards compliant uint32_t
  (spelled __uint32_t to reduce namespace pollution).
o Document new preferred headers and standards compliance.

Discussed with:	bde
PR:		29946
Reviewed by:	bmilekic
2001-08-30 00:04:19 +00:00
Jake Burkholder
0839a4e34b Rename fp_init_pcb to fp_init_proc. Set the FEF bit in fprs register;
according the SCD it should be set if no user trap handler in set.

Submitted by:	tmm
2001-08-20 23:56:19 +00:00
Jake Burkholder
ef3df3f0fe Add variables needed by hardware watchpoint support.
Submitted by:	tmm
2001-08-20 23:50:48 +00:00
Jake Burkholder
11676d49ba Add code for supporting hardware watch points.
Submitted by:	tmm
2001-08-20 23:50:08 +00:00