Commit Graph

11347 Commits

Author SHA1 Message Date
Jung-uk Kim
780f139b5b Detect Advanced Power Management Information for AMD CPUs. 2008-10-21 00:17:55 +00:00
Kip Macy
39f8ee3024 Import interrupt management defines from latest xenlinux 2008-10-20 05:42:38 +00:00
Konstantin Belousov
aa8b201112 Correctly fill siginfo for the signals delivered by linux tkill/tgkill.
It is required for async cancellation to work.

Fix PROC_LOCK leak in linux_tgkill when signal delivery attempt is made
to not linux process.

Do not call em_find(p, ...) with p unlocked.

Move common code for linux_tkill() and linux_tgkill() into
linux_do_tkill().

Change linux siginfo_t definition to match actual linux one. Extend
uid fields to 4 bytes from 2. The extension does not change structure
layout and is binary compatible with previous definition, because i386
is little endian, and each uid field has 2 byte padding after it.

Reported by:	Nicolas Joly <njoly pasteur fr>
Submitted by:	dchangin
MFC after:	1 month
2008-10-19 10:02:26 +00:00
Kip Macy
dafc9be8f8 GC gratuitous XEN defines 2008-10-19 01:33:58 +00:00
Kip Macy
9bf38e47a3 - move gdt, ldt allocation to before KPT allocation
- fix bugs where we would:
    - try to map the hypervisors address space
    - accidentally kick out an existing kernel mapping for some domain creation memory allocation sizes
    - accidentally skip a 2MB kernel mapping for some domain creation memory allocation sizes
- don't rely on trapping in to xen to read rcr2, reference through vcpu
- whitespace cleanups
2008-10-19 01:27:40 +00:00
Kip Macy
ba32964d08 GC unused values 2008-10-19 01:23:30 +00:00
Konstantin Belousov
175c6c319b Make robust futexes work on linux32/amd64. Use PTRIN to read
user-mode pointers. Change types used in the structures definitions to
properly-sized architecture-specific types.

Submitted by:	dchagin
MFC after:	1 week
2008-10-14 07:59:23 +00:00
Nick Hibma
483b9e4739 Say hello to the u3g driver, implementing support for 3G modems.
This was located in the ubsa driver, but should be moved into a separate
driver:

- 3G modems provide multiple serial ports to allow AT commands while the PPP
  connection is up.
- 3G modems do not provide baud rate or other serial port settings.
- Huawei cards need specific initialisation.
- ubsa is for Belkin adapters, an Linuxy choice for another device like 3G.

Speeds achieved here with a weak signal at best is ~40kb/s (UMTS). No spooky
STALLED messages as well.

Next: Move over all entries for Sierra and Novatel cards once I have found
testers, and implemented serial port enumeration for Sierra (or rather have
Andrea Guzzo do it). They list all endpoints in 1 iface instead of 4 ifaces.

Submitted by:	aguzzo@anywi.com
MFC after:	3 weeks
2008-10-09 21:25:01 +00:00
David Xu
7ce5e15ebe If the current thread has the trap bit set (i.e. a debugger had
single stepped the process to the system call), we need to clear
the trap flag from the new frame. Otherwise, the new thread will
receive a (likely unexpected) SIGTRAP when it executes the first
instruction after returning to userland.
2008-10-05 02:03:54 +00:00
Stanislav Sedov
ba26d470bd - Add driver for Attansic L2 FastEthernet controller found on
Asus EeePC and some Asus mainboards.

Reviewed by:	yongari, rpaulo, jhb
Tested by:	many
Approved by:	kib (mentor)
MFC after:	1 week
2008-10-03 10:31:31 +00:00
Peter Wemm
e6592ee55c Collect N identical (or near identical) mkdumpheader() implementations into
one, as threatened in the comment.  Textdump magic can be passed in.
2008-10-01 22:08:53 +00:00
John Baldwin
3d074cf37b Bump MAXCPU to 32 now that 32 CPU x86 systems exist.
Tested by:	rwatson, mdtansca
Approved by:	peter
2008-10-01 21:59:04 +00:00
Marius Strobl
6f04e7b9aa Remove ipi_all() and ipi_self() as the former hasn't been used at
all to date and the latter also is only used in ia64 and powerpc
code which no longer serves a real purpose after bring-up and just
can be removed as well. Note that architectures like sun4u also
provide no means of implementing IPI'ing a CPU itself natively
in the first place.

Suggested by:	jhb
Reviewed by:	arch, grehan, jhb
2008-09-28 18:34:14 +00:00
Konstantin Belousov
d558cef9e6 Frames created by the Xcpustop, Xrendezvous, Xipi_intr_bitmap_handler
and Xlazypmap differ from the frame for Xtimerint. The Xtimerint puts
pointer to the frame between return address and frame body, while rest
of the functions listed above do not. Correct offset calculation to
allow the ddb backtrace to step over such frames.

Noted and reviewed by:	tegge
Tested by:	pho
MFC after:	1 week
2008-09-27 15:54:04 +00:00
Ed Schouten
6bfa9a2d66 Replace all calls to minor() with dev2unit().
After I removed all the unit2minor()/minor2unit() calls from the kernel
yesterday, I realised calling minor() everywhere is quite confusing.
Character devices now only have the ability to store a unit number, not
a minor number. Remove the confusion by using dev2unit() everywhere.

This commit could also be considered as a bug fix. A lot of drivers call
minor(), while they should actually be calling dev2unit(). In -CURRENT
this isn't a problem, but it turns out we never had any problem reports
related to that issue in the past. I suspect not many people connect
more than 256 pieces of the same hardware.

Reviewed by:	kib
2008-09-27 08:51:18 +00:00
Ed Schouten
d3ce832719 Remove unit2minor() use from kernel code.
When I changed kern_conf.c three months ago I made device unit numbers
equal to (unneeded) device minor numbers. We used to require
bitshifting, because there were eight bits in the middle that were
reserved for a device major number. Not very long after I turned
dev2unit(), minor(), unit2minor() and minor2unit() into macro's.
The unit2minor() and minor2unit() macro's were no-ops.

We'd better not remove these four macro's from the kernel, because there
is a lot of (external) code that may still depend on them. For now it's
harmless to remove all invocations of unit2minor() and minor2unit().

Reviewed by:	kib
2008-09-26 14:19:52 +00:00
Kip Macy
852c25eda2 move ipi_pcpu to evtchn.c 2008-09-26 05:54:24 +00:00
Kip Macy
920ba15bf9 Update xen/interface includes to the latest in mercurial
MFC after:	1 month
2008-09-26 05:29:39 +00:00
Kip Macy
4e01238d67 add initial ipi definitions
MFC after:	1 month
2008-09-25 07:11:04 +00:00
Kip Macy
036dc2385d add ipi mapping
MFC after:	1 month
2008-09-25 07:09:50 +00:00
Kip Macy
dec9f63538 add NPGPTD_SHIFT for the nkpt calculation
MFC after:	1 month
2008-09-25 07:05:17 +00:00
Kip Macy
9d741e6d59 Make nkpt dependent on the size of the initial memory allocation
MFC after:	1 month
2008-09-25 07:03:09 +00:00
John Baldwin
58b1b47729 Add multiple include guards. 2008-09-24 18:46:39 +00:00
Konstantin Belousov
a8d403e102 Change the static struct sysentvec and struct Elf_Brandinfo initializers
to the C99 style. At least, it is easier to read sysent definitions
that way, and search for the actual instances of sigcode etc.

Explicitely initialize sysentvec.sv_maxssiz that was missed in most
sysvecs.

No objection from:	jhb
MFC after:	1 month
2008-09-24 10:14:37 +00:00
David E. O'Brien
ae72afe0f2 The kernel implemented 'memcmp' is an alias for 'bcmp'. However, memcmp
and bcmp are not the same thing.  'man bcmp' states that the return is
"non-zero" if the two byte strings are not identical.  Where as,
'man memcmp' states that the return is the "difference between the
first two differing bytes (treated as unsigned char values" if the
two byte strings are not identical.

So provide a proper memcmp(9), but it is a C implementation not a tuned
assembly implementation.  Therefore bcmp(9) should be preferred over memcmp(9).
2008-09-23 14:45:10 +00:00
Alan Cox
1628900be4 MFamd64 SVN rev 179749 CVS rev 1.620
Reverse the direction of pmap_promote_pde()'s traversal over the specified
  page table page.  The direction of the traversal can matter if
  pmap_promote_pde() has to remove write access (PG_RW) from a PTE that
  hasn't been modified (PG_M).  In general, if there are two or more such
  PTEs to choose among, it is better to write protect the one nearer the
  high end of the page table page rather than the low end.  This is because
  most programs access memory in an ascending direction.  The net result of
  this change is a sometimes significant reduction in the number of failed
  promotion attempts and the number of pages that are write protected by
  pmap_promote_pde().

MFamd64 SVN rev 179777 CVS rev 1.621
  Tweak the promotion test in pmap_promote_pde().  Specifically, test PG_A
  before PG_M.  This sometimes prevents unnecessary removal of write access
  from a PTE.  Overall, the net result is fewer demotions and promotion
  failures.
2008-09-20 16:24:42 +00:00
Alan Cox
2af89e55cc MFamd64 SVN rev 179471 CVS rev 1.619
Correct an error in pmap_promote_pde() that may result in an errant
  promotion within the kernel's address space.
2008-09-19 03:33:49 +00:00
Stanislav Sedov
4f55a298ce - Recognize SAVE and OSXSAVE extended processor features.
Approved by:	kib (mentor)
MFC after:	1 month
2008-09-18 18:51:32 +00:00
Kip Macy
4e772e405d Don't do round robin assignment of interrupts on xen
MFC after:	1 month
2008-09-18 03:19:46 +00:00
Kip Macy
425eaba985 Change order of pcpu initialization so the pc_prvspace is set
MFC after:	1 month
2008-09-18 02:59:19 +00:00
Kip Macy
6cf8efdc48 fix initial page directory setup for APs to work when KERNBASE < 0xc0000000
MFC after:	1 month
2008-09-18 01:09:15 +00:00
John Baldwin
9a9d4b5f48 MFamd64: More CPUID feature flags: SSE4, X2APIC, POPCNT, DTES64, and 1GB
large pages.

MFC after:	1 month
2008-09-17 20:45:18 +00:00
Kip Macy
57bd99b3c5 Some people have very strange notions of how large KVA_PAGES should be. The
core of this change generalizes the initial page directory setup so that
the kernel can be given arbitrarily large or small.

- small formatting fixes
- update copyright

MFC after:	1 month
2008-09-17 19:11:37 +00:00
John Baldwin
db2529820a Add 'device acpi' to GENERIC on i386. Most newer i386 machines require it,
so the benefit of having acpi.ko as a standalone module is outweighed by
the complications of drivers compiled into the kernel not including ACPI
attachments by default.

Discussed on:	current
2008-09-16 20:22:22 +00:00
Joseph Koshy
d0d0192f83 Correct a callchain capture bug on the i386.
On the i386 architecture, the processor only saves the current value
of `%esp' on stack if a privilege switch is necessary when entering
the interrupt handler.   Thus, `frame->tf_esp' is only valid for
an entry from user mode.  For interrupts taken in kernel mode, we
need to determine the top-of-stack for the interrupted kernel
procedure by adding the appropriate offset to the current frame
pointer.

Reported by:	kris, Fabien Thomas
Tested by:	Fabien Thomas <fabien.thomas at netasq dot com>
2008-09-15 06:47:52 +00:00
Konstantin Belousov
9719da13e7 When doing rfork(0), i.e. separating curproc VM from any other user of
the same vmspace, decrement the reference count of the shared LDT instead
of a newly-made copy. Code factually removed LDT from the process that
did rfork(0).

Introduce user_ldt_deref() function that does decrement of refcount for
the struct proc_ldt, and call it in the rfork(0) case on the shared LDT.

Reviewed by:	jhb
MFC after:	1 week
2008-09-12 09:53:29 +00:00
Konstantin Belousov
cb1d78d09a The user_ldt_alloc() function shall return with dt_lock locked.
The user_ldt_free() function shall return with dt_lock unlocked.
Error handling code in both functions do not handle this, fix it by
doing necessary lock/unlock.

While there, fix minor style nits.

MFC after:	1 week
2008-09-12 09:51:11 +00:00
Konstantin Belousov
56d456a5d3 Remove warning about static LDT segment allocation. Applications
continue using it after ~7 years since warning was introduced, and there
is no reason to discourage them.

MFC after:	1 week
2008-09-12 09:49:01 +00:00
John Baldwin
3591fea8b0 Add a 'hw.pci.mcfg' tunable. It can be set to 0 to disable memory-mapped
PCI config access.
2008-09-11 21:42:11 +00:00
John Baldwin
289f40c67b Update the comments above the 0xcf9 register reset attempt to match the
code.  We only attempt a single reset using this method (a "hard" reset),
and we use two writes to ensure there is a 0 -> 1 transition in bit 2 to
force a reset.

MFC after:	1 week
2008-09-11 18:33:57 +00:00
John Baldwin
26e4688329 Resurrect the sbni(4) driver. Someone finally tested the MPSAFE patches and
the driver worked ok with them.

Tested by:	friends of yar
2008-09-10 18:36:58 +00:00
John Baldwin
2d10570afe Some K8 chipsets don't expose all of the PCI devices on bus 0 via PCIe
memory-mapped config access.  Add a workaround for these systems by
checking the first function of each slot on bus 0 using both the
memory-mapped config access and the older type 1 I/O port config access.
If we find a slot that is only visible via the type 1 I/O port config
access, we flag that slot.  Future PCI config transactions to flagged
slots on bus 0 use type 1 I/O port config access rather than memory mapped
config access.
2008-09-10 18:06:08 +00:00
John Baldwin
b288b49909 Add a proper detach method to the est(4) driver using cpufreq_unregister().
MFC after:	1 week
2008-09-10 17:41:41 +00:00
Kip Macy
6859a304c6 Get initial bootstrap of APs working under xen.
Note that the APs still blow up in sched_throw().

MFC after:	1 month
2008-09-10 07:11:08 +00:00
Konstantin Belousov
9dee707cf0 Segment registers are stored in the uc_mcontext member of the struct
l_ucontext. To restore the registers content, trampoline needs to
dereference uc_mcontext instead of taking some undefined values from
l_ucontext.

Submitted by:	Dmitry Chagin <dchagin@>
MFC after:	1 week
2008-09-07 16:39:21 +00:00
Yoshihiro Takahashi
05165e3276 - Add the i386_memio_map_load() function to load I/O address table.
- Add the bus_space_compare macro for bus_space consistency.
- Switch using the bus_space_map_load() in isa_load_resourcev().
2008-09-07 04:44:24 +00:00
Joseph Koshy
ab5ed97ed0 Correct a copy-paste error---do not look for REX prefixes in i386 code. 2008-09-05 14:45:56 +00:00
Kip Macy
1fc7c4a654 enable the xen_guest string so that the freebsd xen kernel will
at least pass muster with the loader on 3.0.3

Note that this doesn't actually make it work as Xen 3.0.3
appears to disallow recursive mappings on the page directory
2008-09-03 00:06:10 +00:00
Kip Macy
42e68d4d74 Accomodate the fact that the number of l1 pages varies with the size of the initially
allocated memory - this lets us boot with 3GB

MFC after:	1 month
2008-09-02 02:55:45 +00:00
Kip Macy
32a5d14b26 Fix problem with large memory configuration by ensuring that all NKPT
page table pages have been zeroed before entering them in the page
directory

MFC after:	1 month
2008-09-02 01:32:52 +00:00