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9054 Commits

Author SHA1 Message Date
Hartmut Brandt
e557905435 Fix a problem in bus_dmamap_load_{mbuf,uio} when the first mbuf or the first
uio segment is empty. In this case no dma segment is create by
bus_dmamap_load_buffer, but the calling routine clears the first flag.
Under certain combinations of addresses of the first and second mbuf/uio
buffer this leads to corrupted DMA segment descriptors. This was already
fixed by tmm in sparc64/sparc64/iommu.c.

PR:		kern/47733
Reviewed by:	sam
Approved by:	jake (mentor)
2003-02-04 16:30:27 +00:00
Poul-Henning Kamp
91f1c2b3cc Split the global timezone structure into two integer fields to
prevent the compiler from optimizing assignments into byte-copy
operations which might make access to the individual fields non-atomic.

Use the individual fields throughout, and don't bother locking them with
Giant: it is no longer needed.

Inspired by:    tjr
2003-02-03 19:49:35 +00:00
Jake Burkholder
238dd3209a Split statclock into statclock and profclock, and made the method for driving
statclock based on profhz when profiling is enabled MD, since most platforms
don't use this anyway.  This removes the need for statclock_process, whose
only purpose was to subdivide profhz, and gets the profiling clock running
outside of sched_lock on platforms that implement suswintr.
Also changed the interface for starting and stopping the profiling clock to
do just that, instead of changing the rate of statclock, since they can now
be separate.

Reviewed by:	jhb, tmm
Tested on:	i386, sparc64
2003-02-03 17:53:15 +00:00
Hajimu UMEMOTO
ca26842e2a Add IPv6 support for Linuxlator.
Reviewed by:	dwmalone
MFC after:	10 days
2003-02-03 17:43:20 +00:00
Alan Cox
ca380469a2 - Make allpmaps static.
- Use atomic subtract to update the global wired pages count.  (See
   also vm/vm_page.c revision 1.233.)
 - Assert that the page queue lock is held in pmap_remove_entry().
2003-02-03 00:05:11 +00:00
Alfred Perlstein
04738e99b5 Catch more uses of MIN(). 2003-02-02 13:30:00 +00:00
Alfred Perlstein
8deebb0160 Consolidate MIN/MAX macros into one place (param.h).
Submitted by: Hiten Pandya <hiten@unixdaemons.com>
2003-02-02 13:17:30 +00:00
Josef Karthauser
c0c9e71f9a Put replace spaces with tabs in keeping with the rest of the file. 2003-02-01 18:45:18 +00:00
Poul-Henning Kamp
5d4a99771a add PST to i386 notes. 2003-02-01 17:23:20 +00:00
Julian Elischer
6f8132a867 Reversion of commit by Davidxu plus fixes since applied.
I'm not convinced there is anything major wrong with the patch but
them's the rules..

I am using my "David's mentor" hat to revert this as he's
offline for a while.
2003-02-01 12:17:09 +00:00
Poul-Henning Kamp
3c99c0bc50 Make tsc_freq a 64bit quantity.
Inspired by:    http://www.theinquirer.net/?article=7481
2003-01-29 11:36:39 +00:00
Scott Long
5193a34646 Implement bus_dmamem_alloc_size() and bus_dmamem_free_size() as
counterparts to bus_dmamem_alloc() and bus_dmamem_free().  This allows
the caller to specify the size of the allocation instead of it defaulting
to the max_size field of the busdma tag.

This is intended to aid in converting drivers to busdma.  Lots of
hardware cannot understand scatter/gather lists, which forces the
driver to copy the i/o buffers to a single contiguous region
before sending it to the hardware.  Without these new methods, this
would require a new busdma tag for each operation, or a complex
internal allocator/cache for each driver.

Allocations greater than PAGE_SIZE are rounded up to the next
PAGE_SIZE by contigmalloc(), so this is not suitable for multiple
static allocations that would be better served by a single
fixed-length subdivided allocation.

Reviewed by:	jake (sparc64)
2003-01-29 07:25:27 +00:00
Jake Burkholder
aff81a81d6 Remove BDE_DEBUGGER.
Discussed with:	bde
2003-01-28 19:05:44 +00:00
Alan Cox
d6d92c84c1 Merge pmap_testbit() and pmap_is_modified(). The latter is the only caller
of the former.
2003-01-28 03:01:35 +00:00
Julian Elischer
a18b6f65d0 Fix KSE related patch.
Make it compile for the SMP case..
statclock_process() has changed prototypes.
2003-01-26 21:32:08 +00:00
David Xu
0dbb100b9b Move UPCALL related data structure out of kse, introduce a new
data structure called kse_upcall to manage UPCALL. All KSE binding
and loaning code are gone.

A thread owns an upcall can collect all completed syscall contexts in
its ksegrp, turn itself into UPCALL mode, and takes those contexts back
to userland. Any thread without upcall structure has to export their
contexts and exit at user boundary.

Any thread running in user mode owns an upcall structure, when it enters
kernel, if the kse mailbox's current thread pointer is not NULL, then
when the thread is blocked in kernel, a new UPCALL thread is created and
the upcall structure is transfered to the new UPCALL thread. if the kse
mailbox's current thread pointer is NULL, then when a thread is blocked
in kernel, no UPCALL thread will be created.

Each upcall always has an owner thread. Userland can remove an upcall by
calling kse_exit, when all upcalls in ksegrp are removed, the group is
atomatically shutdown. An upcall owner thread also exits when process is
in exiting state. when an owner thread exits, the upcall it owns is also
removed.

KSE is a pure scheduler entity. it represents a virtual cpu. when a thread
is running, it always has a KSE associated with it. scheduler is free to
assign a KSE to thread according thread priority, if thread priority is changed,
KSE can be moved from one thread to another.

When a ksegrp is created, there is always N KSEs created in the group. the
N is the number of physical cpu in the current system. This makes it is
possible that even an userland UTS is single CPU safe, threads in kernel still
can execute on different cpu in parallel. Userland calls kse_create to add more
upcall structures into ksegrp to increase concurrent in userland itself, kernel
is not restricted by number of upcalls userland provides.

The code hasn't been tested under SMP by author due to lack of hardware.

Reviewed by: julian
2003-01-26 11:41:35 +00:00
Jeff Roberson
4183d949e0 - Remove a redundant scheduler option.
Pointy hat to:	jeff
Spotted by:	dillon
2003-01-26 06:37:43 +00:00
Jeff Roberson
c3384118a1 - Introduce the SCHED_ULE and SCHED_4BSD options for compile time selection
of the scheduler.
 - Add SCHED_4BSD as the scheduler for all kernel config files in cvs.
2003-01-26 05:29:12 +00:00
Peter Wemm
99ebb0bfba Clean up some junk defines, and GC the TPR options. 2003-01-23 01:04:27 +00:00
Peter Wemm
904639d710 Nuke CHEAP_TPR stuff, including LOPRIO_LEVEL (bogus) and ALLHWI_LEVEL
(which we never used).  There is no need to tweak the TPR anymore and
only causes problems.
2003-01-23 01:03:34 +00:00
Peter Wemm
2fbe601a5d Now that TPR isn't bogusly raised at boot, there is no need to clear
it at context switch.
2003-01-23 01:01:35 +00:00
Peter Wemm
e0d92cd4d9 Dont raise the TPR register at initialization time. It only causes
problems and we only ever clear it.
2003-01-23 01:00:58 +00:00
John Baldwin
10deca7e68 - Move enable_sse()'s prototype to machine/md_var.h.
- Sort definition of cpu_* variables appropriately.
- Move cpu_fxsr out of the magic non-BSS set of variables and stick it in
  the BSS along with hw_instruction_sse (make the latter static as well).

Submitted by:	bde (partially)
2003-01-22 18:18:45 +00:00
John Baldwin
caf3197636 Rename cpuid_cpuinfo to cpu_procinfo. bde requested that I rename this
variable to something in the cpu_* namespace since that's what all the
other cpuid variables were named and cpu_procinfo is what I came up with.

Requested by:	bde
2003-01-22 17:54:12 +00:00
John Baldwin
f4e27c448b Bah, add in a missing space char I noticed when MFC'ing this. 2003-01-22 17:26:18 +00:00
Warner Losh
cf19012356 Needs wlan for wi. 2003-01-21 13:31:52 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Jake Burkholder
7251b4bf93 Resolve relative relocations in klds before trying to parse the module's
metadata.  This fixes module dependency resolution by the kernel linker on
sparc64, where the relocations for the metadata are different than on other
architectures; the relative offset is in the addend of an Elf_Rela record
instead of the original value of the location being patched.
Also fix printf formats in debug code.

Submitted by:	Hartmut Brandt <brandt@fokus.gmd.de>
PR:		46732
Tested on:	alpha (obrien), i386, sparc64
2003-01-21 02:42:44 +00:00
Jimmy Olgeni
1897ae9644 Fix typo in comment: inlcude -> include. 2003-01-20 20:23:56 +00:00
Marcel Moolenaar
9d683ffd4b o Move the contents of <machine/floatingpoint.h> over to
<machine/ieeefp.h> where it belongs.
o  Remove the i386 specific inclusion of <machine/floatingpoint.h>
   from <ieeefp.h>, now that including <machine/ieeefp.h> is enough
   for all architectures.
o  Allow <machine/ieeefp.h> to inline the functions exposed by the
   headers by checking for _IEEEFP_INLINED_ in the MI header. When
   defined, prototypes are not given and it is assumed that the MD
   headers, when inlining only a subset of the functions provide
   prototypes for the functions not being inlined.

Based on patch from: Terry Lambert <tlambert2@mindspring.com>
Tested with: make release.
2003-01-19 06:01:33 +00:00
Matthew N. Dodd
95ca467a68 - Removed unecesary code.
- Correct smapi32_new() asm (still doesn't work.)
- Attach to mainboard not isa.
2003-01-18 04:36:12 +00:00
Matthew N. Dodd
7534ac7ab7 A driver for the System Management Application Program
Interface (SMAPI) BIOS, which is present on some IBM
Thinkpad models (560, 600, 770 to name a few.)

The SMAPI BIOS provides access to System Information,
System Configuration, and Power Management.
2003-01-17 08:10:18 +00:00
Sam Leffler
18bf5d2ba6 wi now needs wlan
Reviewed by:	imp
2003-01-16 00:21:52 +00:00
Matthew Dillon
e3669cee72 Merge all the various copies of vm_fault_quick() into a single
portable copy.
2003-01-16 00:02:21 +00:00
Matthew Dillon
f597900329 Merge all the various copies of vmapbuf() and vunmapbuf() into a single
portable copy.  Note that pmap_extract() must be used instead of
pmap_kextract().

This is precursor work to a reorganization of vmapbuf() to close remaining
user/kernel races (which can lead to a panic).
2003-01-15 23:54:35 +00:00
Poul-Henning Kamp
c441cdb88a Add machdep.elan_freq sysctl which can be used to set the CPU clock
frequency in Hz.  The default is still 33.333 MHz.  Please notice
that the number is round to a multiple of four internally so it may
not read back exactly the same as written.

Add compile time ELAN_XTAL option to override the 33.333 MHz default.

Add compile time ELAN_PPS option to enable code for high precision
(250 nanoseconds) timestamping of external signals.
2003-01-15 20:15:33 +00:00
Matthew N. Dodd
e2fdcaf285 - Add inline functions for {ll,l,}abs() to libkern.
- Remove hand rolled abs() functions.
2003-01-15 02:02:33 +00:00
Matthew Dillon
48e3128b34 Bow to the whining masses and change a union back into void *. Retain
removal of unnecessary casts and throw in some minor cleanups to see if
anyone complains, just for the hell of it.
2003-01-13 00:33:17 +00:00
Matthew Dillon
cd72f2180b Change struct file f_data to un_data, a union of the correct struct
pointer types, and remove a huge number of casts from code using it.

Change struct xfile xf_data to xun_data (ABI is still compatible).

If we need to add a #define for f_data and xf_data we can, but I don't
think it will be necessary.  There are no operational changes in this
commit.
2003-01-12 01:37:13 +00:00
John Baldwin
0d238da886 Remove earlysetcpuclass() as it has been OBE.
Suggested by:	bde
2003-01-09 19:59:28 +00:00
John Baldwin
f85b149dae Rework part of the previous processor name changes so that we read
cpu_exthigh and cpu_brand in printcpuinfo() instead of in identify_cpu().
We also only do it for known-good values of cpu_vendor which is a bit more
conservative.

Reviewed by:	bde (mostly)
2003-01-09 19:54:49 +00:00
John Baldwin
338633abf8 Consistently use spaces in between arguments to strcmp(). Whitespace
only.
2003-01-08 19:16:11 +00:00
John Baldwin
5b1e7cb257 - Use cpu_exthigh instead of executing cpuid again to retrieve it for the
print_AMD_foo() functions.
- Add a brand name table for the brand index provided on Intel CPU's in
  %ebx after cpuid 1.
- For Intel CPUs, if we don't get a processor name from the extended cpuid
  then use the brand index in cpuid_cpuinfo to pick a name from the brand
  table and copy that name into cpu_brand.
- Replace the duplicated code to use the extended cpuid to replace
  cpu_model with the processor name in the AMD and Transmeta sections of
  printcpuinfo() with generic code that replaces cpu_model with
  cpu_brand if cpu_brand is not an empty string.  We also trim leading
  spaces from cpu_brand prior to doing this since at least some processor
  names (notably those of Intel CPUs) have leading spaces in the name.
- Give print_AMD_features() its own private regs[] array since
  printcpuinfo() doesn't use the one it has anymore.
2003-01-08 16:41:48 +00:00
John Baldwin
26aa6d02bf - Add a cpu_exthigh variable to hold the highest extended cpuid value
returned from cpuid 0x80000000.
- Add a cpu_brand char array to hold the processor name returned by
  cpuid 0x80000002-0x80000004 on AMD, Intel, Transmeta, and possibly
  other CPUs.
- Use cpuid to set cpu_exthigh and read the processor name if it is present
  in identify_cpu().
2003-01-08 16:35:59 +00:00
John Baldwin
b33c8e3ded Bah, get the test for more than one logical CPU right so we don't bogusly
claim a CPU has HT support when it lists 0 or 1 logical CPU's per physical
processor.
2003-01-08 16:33:03 +00:00
John Baldwin
f4b4a64293 Enumerate logical hyperthread CPUs manually if they aren't already listed
in the mptable.  The way this works is that we determine if the system
has hyperthreading and how many logical CPU's should be in each physical
CPU by using the information returned by cpuid.  During the first pass of
the mptable, we build a bitmask of the APIC IDs of the CPUs listed in the
mptable.  We then scan that bitmask to see if the CPUs are already listed
by the mptable, or if there are any APIC IDs already in use that would
conflict with the APIC IDs of the logical CPUs.  If that test succeeds,
then we fixup the count of application processors.  Later on during the
second pass of the mptable we create fake processor entries for logical
CPUs and add them to the system.

We only need this type of fixup hack when using the mptable to enumerate
CPUs.  The ACPI MADT table properly enumerates all logical CPUs.
2003-01-08 01:33:18 +00:00
John Baldwin
5460753d55 If the boot processor supports hyperthreading and contains more than one
logical CPU, display the number of logical CPUs per physical processor
underneath the list of CPU features.
2003-01-08 01:23:16 +00:00
John Baldwin
fa896b7280 Add a cpuid_cpuinfo variable to hold the results of %ebx from cpuid with
%eax of 1 and set it in identify_cpu().
2003-01-08 01:20:05 +00:00
John Baldwin
72a1e0e226 - Fix the name of the hyperthreading cpuid feature flag to be HTT instead
of HHT.
- Document fields returned in %ebx by a cpuid with %eax of 1.
2003-01-08 01:15:26 +00:00
John Baldwin
bb69b35d8d Document bit 31 of the cpuid features word as PBE (Pending Break Enable). 2003-01-03 18:54:59 +00:00