Commit Graph

3888 Commits

Author SHA1 Message Date
John Baldwin
07930cce05 A few whitespace and comment tweaks. 2003-10-24 21:02:26 +00:00
Peter Wemm
cedb3695c1 Add __va_copy and make it always visible, in spite of the __ISO_C_VISIBLE
setting.  Make va_copy be an alias if __ISO_C_VISIBLE >= 1999.

Why?  more than a few ports have an autoconf that looks for __va_copy
because it is available on glibc.  It is critical that we use it if
at all possible on amd64.  It generally isn't a problem for i386 and its
ilk because autoconf driven code tends to fall back to an assignment.
2003-10-24 02:50:39 +00:00
Peter Wemm
63f2bb5ff1 Use a more robust API altogether for the amd64_get_fsbase() etc functions. 2003-10-23 06:06:14 +00:00
Peter Wemm
c0432d033e Renumber the sysarch vectors for amd64 specific syscalls so that I can
implement i386 compat numbers where it makes sense.  This would save a
syscall translation layer.  Yes, this breaks the abi slightly again, but
fortunately its just a recompile rather than tweaking the source.  I will
be fixing the libc stubs while I'm here.
2003-10-23 05:31:23 +00:00
Mike Silbersack
184dcdc7c8 Change all SYSCTLS which are readonly and have a related TUNABLE
from CTLFLAG_RD to CTLFLAG_RDTUN so that sysctl(8) can provide
more useful error messages.
2003-10-21 18:28:36 +00:00
Nate Lawson
4c3655b418 Add the cpu_idle_hook() function pointer so that other idlers can be
hooked at runtime.  Make C1 sleep (e.g., HLT) be the default.  This
prepares the way for further ACPI sleep states.
2003-10-18 22:25:07 +00:00
Bruce Evans
ed86674a3d Don't forget to load %es with the kernel data segment selector in
Xcpustop().  %es is used in at least the call to savectx() when savectx()
calls bcopy(), so not loading it was fatal if a stop IPI interrupts
user mode.

This reduces bugs starting and stopping CPUs for debuggers.  CPUs are
stopped mainly in kdb_trap() and cpu_reset().  At reset time there is
a good chance that all the CPUs are in the kernel, so the bug was
probably harmless then.
2003-10-16 10:44:24 +00:00
Peter Wemm
19acc770c2 Pull the tier-2 card one last time and break the get/setcontext and
sigreturn() ABI and the signal context on the stack.

Make the trapframe (and its shadows in the ucontext and sigframe etc)
8 bytes larger in order to preserve 16 byte stack alignment for the
following C code calls.  I could have done some padding after the
trapframe was saved, but some of the C code still expects an argument of
'struct trapframe'.  Anyway, this gives me a spare field that can be used
to store things like 'partial trapframe' status or something else in
the future.

The runtime impact is fairly small, *except* for threaded apps and things
that decode contexts and the signal stack (eg: cvsup binary).  Signal
delivery isn't too badly affected because the kernel generates the
sigframe that sigreturn uses after the handler has been called.

The size of mcontext_t and struct sigframe hasn't changed.  Only
the last few fields (sc_eip etc) got moved a little and I eliminated
a spare field.  mc_len/sc_len did change location though so the
sanity checks there will still trap it.
2003-10-15 02:04:52 +00:00
Alan Cox
7fb578933f MFia64
Move uma_small_alloc() and uma_small_free() to uma_machdep.c.
2003-10-14 05:51:31 +00:00
Robert Drehmel
ea924c4cd3 Implement preliminary support for the PT_SYSCALL command to ptrace(2). 2003-10-09 10:17:16 +00:00
Bruce M Simpson
2bc7dd5661 Move pmap_resident_count() from the MD pmap.h to the MI pmap.h.
Add a definition of pmap_wired_count().
Add a definition of vmspace_wired_count().

Reviewed by:	truckman
Discussed with:	peter
2003-10-06 01:47:12 +00:00
Alan Cox
ab87e2fb83 Don't bother setting a page table page's valid field. It is unused and
not setting it is consistent with other uses of VM_ALLOC_NOOBJ pages.
2003-10-05 00:12:16 +00:00
Alan Cox
566526a957 Migrate pmap_prefault() into the machine-independent virtual memory layer.
A small helper function pmap_is_prefaultable() is added.  This function
encapsulate the few lines of pmap_prefault() that actually vary from
machine to machine.  Note: pmap_is_prefaultable() and pmap_mincore() have
much in common.  Going forward, it's worth considering their merger.
2003-10-03 22:46:53 +00:00
Alan Cox
81b460c5eb Reimplement pagezero() using "movnti". 2003-10-02 05:08:13 +00:00
Peter Wemm
6ccf265bb0 Commit Bosko's patch to clean up the PSE/PG_G initialization to and
avoid problems with some Pentium 4 cpus and some older PPro/Pentium2
cpus.  There are several problems, some documented in Intel errata.
This patch:
1) moves the kernel to the second page in the PSE case.  There is an
errata that says that you Must Not point a 4MB page at physical
address zero on older cpus.  We avoided bugs here due to sheer luck.
2) sets up PSE page tables right from the start in locore, rather than
trying to switch from 4K to 4M (or 2M) pages part way through the boot
sequence at the same time that we're messing with PG_G.

For some reason, the pmap work over the last 18 months seems to tickle
the problems, and the PAE infrastructure changes disturb the cpu
bugs even more.

A couple of people have reported a problem with APM bios calls during
boot.  I'll work with people to get this resolved.

Obtained from:	bmilekic
2003-10-01 23:46:08 +00:00
Peter Wemm
a93020d7a1 Use __register_t instead of register_t, otherwise <sys/types.h> is a
prerequisite for <ucontext.h> on amd64.  Oops.
2003-10-01 01:08:04 +00:00
Peter Wemm
ba5a51ea04 MFi386: Do not depend on LEAPYEAR() macro boolean values being 0 or 1.
MFi386: Add quality field for timer0
2003-09-30 06:42:47 +00:00
Peter Wemm
ec548f97fc MFi386: BURN_BRIDGES around timer0 functions 2003-09-30 06:38:11 +00:00
Jeff Roberson
3c4d5e1546 - Remove the definition for TD_SWITCHIN as it is not used.
Approved by:	peter
2003-09-30 04:52:24 +00:00
Alan Cox
9060731130 Eliminate the pte object. 2003-09-27 20:53:01 +00:00
Alan Cox
d2a81cdbed MFi386
Allocate the page table directory page as "no object" pages.
2003-09-26 04:12:41 +00:00
Alan Cox
d91440cd46 MFi386
Reimplement pmap_release() such that it uses the page table rather than
 the pte object to locate the page table directory pages.  (Temporarily,
 retain an assertion on the emptiness of the pte object.)
2003-09-25 05:38:18 +00:00
Peter Wemm
cc3112f108 Re-raise the default datasize and stacksize now that the 32 bit exec
support can clip it to sensible values.
2003-09-25 01:11:17 +00:00
Peter Wemm
c460ac3a00 Add sysentvec->sv_fixlimits() hook so that we can catch cases on 64 bit
systems where the data/stack/etc limits are too big for a 32 bit process.

Move the 5 or so identical instances of ELF_RTLD_ADDR() into imgact_elf.c.

Supply an ia32_fixlimits function.  Export the clip/default values to
sysctl under the compat.ia32 heirarchy.

Have mmap(0, ...) respect the current p->p_limits[RLIMIT_DATA].rlim_max
value rather than the sysctl tweakable variable.  This allows mmap to
place mappings at sensible locations when limits have been reduced.

Have the imgact_elf.c ld-elf.so.1 placement algorithm use the same
method as mmap(0, ...) now does.

Note that we cannot remove all references to the sysctl tweakable
maxdsiz etc variables because /etc/login.conf specifies a datasize
of 'unlimited'.  And that causes exec etc to fail since it can no
longer find space to mmap things.
2003-09-25 01:10:26 +00:00
Yoshihiro Takahashi
33e38a2cc8 Implement the bus_space_map() function to allocate resources and initialize
a bus_handle, but currently it does only initializing a bus_handle.
2003-09-23 08:22:34 +00:00
Peter Wemm
725bc17312 Oops. back out last commit. The data and stack limits are used by the
32 bit binary stuff.  32 bit binaries do not like it much when the kernel
tries hard to put things above the 8GB mark.

I have a work-in-progress to fix this properly, but I didn't want to burn
anybody with this yet.
2003-09-23 03:20:34 +00:00
Peter Wemm
705c67adc2 Fix patch transcription typo. s/IDT_BPT/IDT_BP/ 2003-09-23 00:45:55 +00:00
Peter Wemm
cd3402fa66 Sync with i386 version. The quality initialization was missing and some
other junk.
2003-09-23 00:18:45 +00:00
Peter Wemm
ee3ce1c29c GC unused child variable 2003-09-23 00:04:28 +00:00
Peter Wemm
4295ddf26f MFi386 pci_bus.c 1.102 legacyvar.h 1.4: rename nexus_pcib to legacy_pcib
However, leave legacy_pcib_route_interrupt() since there is no pcibios to
call.
2003-09-23 00:03:44 +00:00
Peter Wemm
da87d7e10d Move basemem variable into global scope so that the MP startup code can
refer to it for looking for tables.
2003-09-22 23:33:29 +00:00
Peter Wemm
24789c549a Increase the default data size limit from 512MB to 8GB. Increase default
stack limit from 64MB to 512MB.
2003-09-22 23:21:39 +00:00
Peter Wemm
848947c793 MFi386 rev 1.51 by scottl: make dflt_lock() always panic. 2003-09-22 23:11:42 +00:00
Peter Wemm
951b3d46b6 MFi386 rev 1.53 by scottl: Allocate the S/G list in the tag, not on
the stack.  This means that s/g lists can be arbitrarily long.
2003-09-22 23:10:24 +00:00
Peter Wemm
d79ddbf5de MFi386 machdep.c rev 1.201, clock.c 1.201, clock.h 1.45 by phk: Dont
initialize a TSC timecounter until we know if it is broke or not.

XXX I think there is a bug in the i386 code here.  init_TSC_tc() comes
after:
  if (statclock_disable)
    return;

ie: if you turn off the statclock interrupt, you dont get the TSC either.
2003-09-22 23:02:24 +00:00
Peter Wemm
e63f19e150 MFi386 rev 1.105 by jhb: fix comment typo 2003-09-22 22:54:14 +00:00
Peter Wemm
74a99ec4fe MFi386 rev 1.256 by jhb: remove redundant #include <sys/sysctl.h> 2003-09-22 22:52:46 +00:00
Peter Wemm
13a27f2962 MFi386 rev 1.25 by jhb: add new MSR's and some missing older ones and
APICBASE MSR constants.
2003-09-22 22:51:46 +00:00
Peter Wemm
f0c4b48689 MFi386 rev 1.55 by sam: remove unused #define BUS_DMAMAP_NSEGS 2003-09-22 22:43:21 +00:00
Peter Wemm
d10e66f073 MFi386 rev 1.37: constant-friendly bswap macros 2003-09-22 22:37:49 +00:00
Peter Wemm
5bc82d1ce1 MFi386: pci_cfgreg.h rev 1.10 by jhb/des/njl. Fix CONF1_ENABLE_MSK. 2003-09-22 22:21:21 +00:00
Peter Wemm
20e220ac68 MFCi386: trap.c rev 1.257 by bde. Don't forget to reenable interrupts
for breakpoint and trace traps from usermode.  Although all the setidt
entries are interrupt gates on amd64, all but the trace and bpt trap
entry handlers reenable interrupts after the swapgs instruction in order
to simulate the trap/interrupt gate distinction.  In other words, the
amd64 code behaves the same way that i386 does here.
2003-09-22 22:19:59 +00:00
Peter Wemm
8848ad863b MFi386 by jhb: add acpi_SetDefaultIntrModel(); 2003-09-22 22:12:46 +00:00
Peter Wemm
76caec589f MFi386 by jhb: use symbolic constants for the IDT entries. 2003-09-22 22:09:02 +00:00
Peter Wemm
882554f111 MFi386: machdep.c:1.570 clock.c:1.204 by bde: Quick fix for calling DELAY
for ddb input in some atkbd-based console drivers.  ddb must not use any
normal locks but DELAY() normally calls getit() which needs clock_lock.
This also removes the need for recursion on clock_lock.
2003-09-22 21:56:48 +00:00
Joerg Wunsch
9678710b1f Mention the puc(4) glue driver in a commented-out example so the user
of "dumb" PCI-based serial/parallel boards get a hint how to enable
them.

I wasn't sure about the ia64, pc98, powerpc, and sparc64 archs whether
they'd support puc(4) or not.
2003-09-19 20:04:55 +00:00
David E. O'Brien
67193a54f0 Statically compile in sound as we don't have modules yet. 2003-09-15 22:40:00 +00:00
Alan Cox
6d66d714c7 Simplify (and micro-optimize) pmap_unuse_pt(): Only one caller,
pmap_remove_pte(), passed NULL instead of the required page table
page to pmap_unuse_pt().  Compute the necessary page table page
in pmap_remove_pte().  Also, remove some unreachable code from
pmap_remove_pte().
2003-09-13 21:57:38 +00:00
Alan Cox
b9850eb224 Add a new parameter to pmap_extract_and_hold() that is needed to eliminate
Giant from vmapbuf().

Idea from:	tegge
2003-09-12 07:07:49 +00:00
David E. O'Brien
3fc40c2484 Sort 'bge' correctly. 2003-09-10 18:54:59 +00:00
John Baldwin
a547af297d Remove an XXX comment by using the per CPU mask added after this comment
was added.
2003-09-10 01:36:48 +00:00
John Baldwin
f03cb48d41 Fix a typo. 2003-09-10 01:11:58 +00:00
Peter Wemm
2c25d12414 Clean up get/set_mcontext() and get/set_fpcontext(). These are operated
on data structures on the kernel stack which are guaranteed to be 16 byte
aligned by gcc, the amd64 ABI and __aligned(16).

Ensire the tss_rsp0 initial stack pointer is 16 byte aligned in case
sizeof(pcb) becomes odd at some point.  This is convenient for the
interrupt handler case because the ring crossing pushes cause the
required odd alignment before the call to the C code.

Have fast_syscall add an additional 8 bytes to ensure that the trapframe
has the correct odd alignment for the call to C code.  Note that there are
no checks to make sure that the trapframe size is appropriate for this.

This makes get/setfpcontext work properly (finally).  You get a GPF in
kernel mode if any of this is botched without the alignment fixup code
that is apparently needed on i386.
2003-09-09 19:32:09 +00:00
Peter Wemm
df6ece387b Turn aac back on now that its been cleaned up for 64 bit compilation 2003-09-08 20:00:55 +00:00
Peter Wemm
292bbfd103 Argh. This file was completely out of sync with mcontext/trapframe. 2003-09-08 18:31:48 +00:00
Peter Wemm
7fe089a006 Hmm. Two copies of the mcontext... 2003-09-08 18:28:41 +00:00
Alan Cox
ba2157f218 Introduce a new pmap function, pmap_extract_and_hold(). This function
atomically extracts and holds the physical page that is associated with the
given pmap and virtual address.  Such a function is needed to make the
memory mapping optimizations used by, for example, pipes and raw disk I/O
MP-safe.

Reviewed by:	tegge
2003-09-08 02:45:03 +00:00
Bill Paul
a94100fa9b Take the support for the 8139C+/8169/8169S/8110S chips out of the
rl(4) driver and put it in a new re(4) driver. The re(4) driver shares
the if_rlreg.h file with rl(4) but is a separate module. (Ultimately
I may change this. For now, it's convenient.)

rl(4) has been modified so that it will never attach to an 8139C+
chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to
match the 8169/8169S/8110S gigE chips. if_re.c contains the same
basic code that was originally bolted onto if_rl.c, with the
following updates:

- Added support for jumbo frames. Currently, there seems to be
  a limit of approximately 6200 bytes for jumbo frames on transmit.
  (This was determined via experimentation.) The 8169S/8110S chips
  apparently are limited to 7.5K frames on transmit. This may require
  some more work, though the framework to handle jumbo frames on RX
  is in place: the re_rxeof() routine will gather up frames than span
  multiple 2K clusters into a single mbuf list.

- Fixed bug in re_txeof(): if we reap some of the TX buffers,
  but there are still some pending, re-arm the timer before exiting
  re_txeof() so that another timeout interrupt will be generated, just
  in case re_start() doesn't do it for us.

- Handle the 'link state changed' interrupt

- Fix a detach bug. If re(4) is loaded as a module, and you do
  tcpdump -i re0, then you do 'kldunload if_re,' the system will
  panic after a few seconds. This happens because ether_ifdetach()
  ends up calling the BPF detach code, which notices the interface
  is in promiscuous mode and tries to switch promisc mode off while
  detaching the BPF listner. This ultimately results in a call
  to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init()
  to handle the IFF_PROMISC flag change. Unfortunately, calling re_init()
  here turns the chip back on and restarts the 1-second timeout loop
  that drives re_tick(). By the time the timeout fires, if_re.ko
  has been unloaded, which results in a call to invalid code and
  blows up the system.

  To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(),
  which stops the ioctl routine from trying to reset the chip.

- Modified comments in re_rxeof() relating to the difference in
  RX descriptor status bit layout between the 8139C+ and the gigE
  chips. The layout is different because the frame length field
  was expanded from 12 bits to 13, and they got rid of one of the
  status bits to make room.

- Add diagnostic code (re_diag()) to test for the case where a user
  has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some
  NICs have the REQ64# and ACK64# lines connected even though the
  board is 32-bit only (in this case, they should be pulled high).
  This fools the chip into doing 64-bit DMA transfers even though
  there is no 64-bit data path. To detect this, re_diag() puts the
  chip into digital loopback mode and sets the receiver to promiscuous
  mode, then initiates a single 64-byte packet transmission. The
  frame is echoed back to the host, and if the frame contents are
  intact, we know DMA is working correctly, otherwise we complain
  loudly on the console and abort the device attach. (At the moment,
  I don't know of any way to work around the problem other than
  physically modifying the board, so until/unless I can think of a
  software workaround, this will have do to.)

- Created re(4) man page

- Modified rlphy.c to allow re(4) to attach as well as rl(4).

Note that this code works for the sample 8169/Marvell 88E1000 NIC
that I have, but probably won't work for the 8169S/8110S chips.
RealTek has sent me some sample NICs, but they haven't arrived yet.
I will probably need to add an rlgphy driver to handle the on-board
PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Peter Wemm
c896a8adbf Oops. sizeof(long) = 8, not 4. Get the fxsave buffer inside mcontext
the right size.  I'm planning on *possibly* stealing the two 'spare'
variables on either side for botched alignment correction.
2003-09-05 20:47:27 +00:00
David E. O'Brien
be8d2cbf2c MFi386: add device ataraid, this is now seperate and not pulled in by atadisk. 2003-09-03 01:24:47 +00:00
Alexander Kabaev
1d49585050 Standardize idempotentcy ifdefs. Consistently use _MACHINE_VARARGS_H_
symbol.
2003-09-01 03:01:45 +00:00
Alan Cox
411d10a600 Migrate the sf_buf allocator that is used by sendfile(2) and zero-copy
sockets into machine-dependent files.  The rationale for this
migration is illustrated by the modified amd64 allocator.  It uses the
amd64's direct map to avoid emphemeral mappings in the kernel's
address space.  On an SMP, the emphemeral mappings result in an IPI
for TLB shootdown for each transmitted page.  Yuck.

Maintainers of other 64-bit platforms with direct maps should be able
to use the amd64 allocator as a reference implementation.
2003-08-29 20:04:10 +00:00
John Baldwin
729d7ffbcf - Rename PCIx_HEADERTYPE* to PCIx_HDRTYPE* so the constants aren't so long.
- Add a new PCIM_HDRTYPE constant for the field in PCIR_HDRTYPE that holds
  the header type.
- Replace several magic numbers with appropriate constants for the header
  type register and a couple of PCI_FUNCMAX.
- Merge to amd64 the fix to the i386 bridge code to skip devices with
  unknown header types.

Requested by:	imp (1, 2)
2003-08-28 21:22:25 +00:00
Nate Lawson
5a4d072c93 Minor style cleanups. 2003-08-28 16:30:31 +00:00
David E. O'Brien
a7b60ab26e Fix copyright comment & FBSDID style nits.
Requested by:	bde
2003-08-25 09:48:48 +00:00
Alan Cox
d08ffe8451 Eliminate the last (direct) uses of vm_page_lookup() on the pte object. 2003-08-24 08:07:06 +00:00
Peter Wemm
0dda1d3887 AMD64 mtrr driver. 2003-08-23 00:27:58 +00:00
Peter Wemm
46159d1fd6 Switch to using the emulator in the common compat area.
Still work-in-progress.
2003-08-23 00:04:53 +00:00
Peter Wemm
c639ca93f4 Initial sweep at dividing up the generic 32bit-on-64bit kernel support
from the ia32 specific stuff.  Some of this still needs to move to the MI
freebsd32 area, and some needs to move to the MD area.  This is still
work-in-progress.
2003-08-22 23:19:02 +00:00
Warner Losh
d2c5276d96 Prefer new location of pci include files (which have only been in the
tree for two or more years now), except in a few places where there's
code to be compatible with older versions of FreeBSD.
2003-08-22 07:39:05 +00:00
Peter Wemm
82914097e5 Regen 2003-08-21 03:48:50 +00:00
Peter Wemm
6b59055cb8 This is too funny for words. Swap syscalls 416 and 417 around. It works
better that way when sigaction() and sigreturn() do the right thing.
2003-08-21 03:48:05 +00:00
Alan Cox
2b12cfb461 - Lock the pte object when performing vm_page_grab().
- Insure that the page table page is zero filled before adding it
   to the page table.
2003-08-20 05:09:55 +00:00
Gordon Tetlow
df3d69c217 Fixup the ELF branding information to point to the new home of rtld. 2003-08-17 08:08:38 +00:00
Alan Cox
365b27ea29 In pmap_copy(), since we have the page table page's physical address
in hand, use PHYS_TO_VM_PAGE() rather than vm_page_lookup().
2003-08-17 04:48:21 +00:00
Marcel Moolenaar
710338e94f In vm_thread_swap{in|out}(), remove the alpha specific conditional
compilation and replace it with a call to cpu_thread_swap{in|out}().
This allows us to add similar code on ia64 without cluttering the
code even more.
2003-08-16 23:15:15 +00:00
Marcel Moolenaar
26502503e5 Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI
prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to
cpu.h. This affects db_command.c and kern_shutdown.c.

ia64: move all MD prototypes from cpu.h to md_var.h. This affects
madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory().
It's not used (vm_machdep.c).

alpha: the MD prototypes have been left in cpu.h with a comment
that they should be there. Moving them is left for later. It was
expected that the impact would be significant enough to be done in
a seperate commit.

powerpc: MD prototypes left in cpu.h. Comment added.

Suggested by: bde
Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
Alan Cox
6700fc865c Eliminate pmap_page_lookup() and its uses. Instead, use PHYS_TO_VM_PAGE()
to convert the pte's physical address into a vm page.

Reviewed by:	peter
2003-08-16 03:11:33 +00:00
John Baldwin
594dfbc391 - Fix a duplicated typo.
- Add a macro for the logical shift needed to extract an APIC ID from
  either from the local APIC ICR Hi register or the APIC ID registers of
  the local and IO APICs.
2003-08-15 15:23:13 +00:00
Warner Losh
06b4bf3e55 Expand inline the relevant parts of src/COPYRIGHT for Matt Dillon's
copyrighted files.

Approved by: Matt Dillon
2003-08-12 23:24:05 +00:00
Paul Saab
77c39e17fa Halted CPU's should not accumulate time.
Reviewed by:	jhb
2003-08-12 17:01:10 +00:00
Alan Cox
ba97fd8a78 Rename pmap_changebit() to pmap_clear_ptes() and remove the last
parameter.  The new name better reflects what the function does and
how it is used.  The last parameter was always FALSE.

Note: In theory, gcc would perform constant propagation and dead code
elimination to achieve the same effect as removing the last parameter,
which is always FALSE.  In practice, recent versions do not.  So, there
is little point in letting unused code pessimize execution.
2003-08-10 21:53:55 +00:00
Alan Cox
7fbff95c04 MFi386 1.422 & 1.423: lock page queues in pmap_insert_entry(). 2003-08-08 01:52:03 +00:00
Scott Long
477327b5c5 In _bus_dmamap_load_buffer(), only count the number of bounce pages needed if
they haven't been counted before.  This test was ommitted when bus_dmamap_load()
was merged into this function, and results in the pagesneeded field growing
without bounds when multiple deferrals happen.

Thanks to Paul Saab for beating his head against this for a few hours =-)
2003-08-04 23:40:35 +00:00
John Baldwin
3bdbd658f1 - Since td_critnest is now initialized in MI code, it doesn't have to be
set in cpu_critical_fork_exit() anymore.
- As far as I can tell, cpu_thread_link() has never been used, not even
  when it was originally added, so remove it.
2003-08-04 20:32:45 +00:00
Alan Cox
e53f32ace5 Use kmem_alloc_nofault() rather than kmem_alloc_pageable() in pmap_mapdev().
See revision 1.140 of kern/sys_pipe.c for a detailed rationale.

Submitted by:	tegge
2003-08-02 19:26:09 +00:00
Peter Wemm
59cc2230c6 Fix a dumbass mistake. I had the 'set' and 'get' reversed in the
fpsetround/fpgetround macro pairs.
2003-08-02 00:26:30 +00:00
Bosko Milekic
b053bc8407 Make sure that when the PV ENTRY zone is created in pmap, that it's
created not only with UMA_ZONE_VM but also with UMA_ZONE_NOFREE.  In
the i386 case in particular, the pmap code would hook a special
page allocation routine that allocated from kernel_map and not kmem_map,
and so when/if the pageout daemon drained the zones, it could actually
push out slabs from the PV ENTRY zone but call UMA's default page_free,
which resulted in pages allocated from kernel_map being freed to
kmem_map; bad.  kmem_free() ignores the return value of the
vm_map_delete and just returns.  I'm not sure what the exact
repercussions could be, but it doesn't look good.

In the PAE case on i386, we also set-up a zone in pmap, so be
conservative for now and make that zone also ZONE_NOFREE and
ZONE_VM.  Do this for the pmap zones for the other archs too,
although in some cases it may not be entirely necessarily.  We'd
rather be safe than sorry at this point.

Perhaps all UMA_ZONE_VM zones should by default be also
UMA_ZONE_NOFREE?

May fix some of silby's crashes on the PV ENTRY zone.
2003-07-31 03:39:51 +00:00
Peter Wemm
3950c40739 KSTACK_PAGES is a global option. 2003-07-31 01:27:18 +00:00
Peter Wemm
9fb1db7bc8 Cosmetic: fix disorder of opt_kstack_pages.h include. 2003-07-31 01:26:40 +00:00
David Xu
5a92cbc206 Use PSL_KERNEL as upcall thread's initial rflags, don't use
scratch user rflags.
2003-07-29 12:44:16 +00:00
Maxime Henrion
d5afecd068 - Introduce a new busdma flag BUS_DMA_ZERO to request for zero'ed
memory in bus_dmamem_alloc().  This is possible now that
  contigmalloc() supports the M_ZERO flag.
- Remove the locking of Giant around calls to contigmalloc() since
  contigmalloc() now grabs Giant itself.
2003-07-27 13:52:10 +00:00
David E. O'Brien
56ae44c5df Use __FBSDID().
Brought to you by:	a boring talk at Ottawa Linux Symposium
2003-07-25 21:19:19 +00:00
David E. O'Brien
12ea2cfe2e Use __FBSDID().
Brought to you by:	a boring talk at OLS
2003-07-25 21:10:19 +00:00
Alan Cox
059358675e MFi386 revision 1.416
Add vm object locking to pmap_prefault().

Note: powerpc and sparc64 do not implement this function.
2003-07-25 18:58:39 +00:00
David Xu
74bbb26b51 Align upcall stack top to odd times of 8. GCC accounts return address
in callee function for stack alignment.
2003-07-25 00:21:37 +00:00
David Xu
c3f8e34d6b Implement cpu_set_upcall and cpu_set_upcall_kse.
Reviewed by: peter
2003-07-24 08:52:44 +00:00
David Xu
81ebc68226 Set fault address to si_addr.
Reviewed by: peter
2003-07-24 08:51:22 +00:00
Peter Wemm
9e9e575b6a Make the breakpoint instruction trap gate available to users.
ptrace() needs this.

Submitted by:	Mark Kettenis <kettenis@chello.nl>
2003-07-23 23:20:20 +00:00
Peter Wemm
8b48b40d5e Set the %gs base to pcb_gsbase, not pcb_fsbase. Oops.
Discovered by:	davidxu
2003-07-23 23:17:15 +00:00
Alan Cox
3462150083 Annotate pmap_changebit() as __always_inline. This function was
written as a template that when inlined is specialized for the caller
through constant value propagation and dead code elimination.  Thus,
the specialized code that is generated for pmap_clear_reference() et
al. avoids several conditional branches inside of a loop.
2003-07-23 19:49:32 +00:00
John Baldwin
e47d4f0fc2 Use macros from apic.h to when writing to the ICR to send IPIs to startup
APs rather than magic numbers.

Tested by:	scottl
2003-07-23 19:04:28 +00:00
John Baldwin
55fb372edd Add a new macro APIC_ICRLO_RESV_MASK that contains all of the reserved
fields in the low 32 bits of the local APIC ICR register.  Use this macro
in place of APIC_RESV2_MASK when masking off existing bits from the ICR
when writing to it to send an IPI.

Tested by:	scottl
2003-07-23 18:59:38 +00:00
Peter Wemm
5b9f8ddbbd Go back to 64 bit precision for fadd/fsub/fsqrt etc. This is because on
AMD64, gcc (and the ABI) expects the x87 unit to be running in 80/64
mode (not 64/53) so that it can use it for 'long double' operations.  It
takes the expected precision differences into account when generating
code.
2003-07-22 06:50:34 +00:00
Peter Wemm
76537e43f5 Extend the machine/ieeefp.h that was inherited from i386 to support
the SSE mxcsr register as well.  Since gcc will intermix SSE2 and x87
FP code, the fpsetround() etc mode had better be the same.

There are hooks to enable these inlines to be instantiated inside libc
for non-gcc or C++ callers. (g++ doesn't like the inlines that tried
to extract an integer and convert it to an enum).
2003-07-22 06:44:54 +00:00
David Xu
20a2d71332 Rename thread_siginfo to cpu_thread_siginfo.
Suggested by: jhb
2003-07-15 00:11:04 +00:00
Mark Murray
c7b132c974 Protect lint(1) from a #error. 2003-07-10 18:05:02 +00:00
Peter Wemm
e95babf3a8 unifdef -DLAZY_SWITCH and start to tidy up the associated glue. 2003-07-10 01:02:59 +00:00
Peter Wemm
bf8ca114e2 Fix the VADDR() macros to use either KVADDR() or UVADDR(), depending
on the implied sign extension.  The single unified VADDR() macro was
not able to avoid sign extending the VM_MAXUSER_ADDRESS/USRSTACK values.
Be explicit about UVADDR() (positive address space) and KVADDR()
(kernel negative address space) to make mistakes show up more
spectacularly.

Increase user VM space from 1/2TB (512GB) to 128TB.
2003-07-09 23:04:23 +00:00
Peter Wemm
6486c09935 Fix up bogus index/offset/mask calculations in the allocpte and the
corresponding release code.  This was preventing the use of more than
1/2TB of user VM.  I also spent a week staring at this code only to
eventually find that I'd mistakenly typed a P as an R.
2003-07-09 22:59:45 +00:00
Peter Wemm
4afd44c16a Turn the 2MB page mappings that cover the kernel text+data+bss area back
on now that pmap_pte() can handle it.  I never actually ran into anything
that broke that I know of, but this was turned off as a precaution.
2003-07-09 22:55:00 +00:00
Peter Wemm
436e1f203f Have pmap_pte() on a 2MB mapped address return the 2MB pde itself
rather than a non-existing pte.  There is code elsewhere in i386/amd64
pmap that neglects to handle the large page cases because it knows that
it will see PG_PS in the returned "pte".
2003-07-09 22:53:45 +00:00
Alan Cox
90a7c7b671 In pmap_object_init_pt(), the pmap_invalidate_all() should be performed on
the caller-provided pmap, not the kernel_pmap.  Using the kernel_pmap
results in an unnecessary IPI for TLB shootdown on SMPs.

Reviewed by:	jake, peter
2003-07-08 19:40:35 +00:00
Alan Cox
1f78f902a8 Background: pmap_object_init_pt() premaps the pages of a object in
order to avoid the overhead of later page faults.  In general, it
implements two cases: one for vnode-backed objects and one for
device-backed objects.  Only the device-backed case is really
machine-dependent, belonging in the pmap.

This commit moves the vnode-backed case into the (relatively) new
function vm_map_pmap_enter().  On amd64 and i386, this commit only
amounts to code rearrangement.  On alpha and ia64, the new machine
independent (MI) implementation of the vnode case is smaller and more
efficient than their pmap-based implementations.  (The MI
implementation takes advantage of the fact that objects in -CURRENT
are ordered collections of pages.)  On sparc64, pmap_object_init_pt()
hadn't (yet) been implemented.
2003-07-03 20:18:02 +00:00
Maxime Henrion
331e012396 Sync more things with other backends. 2003-07-01 19:16:48 +00:00
Maxime Henrion
4813f72a9b Honor the boundary of the busdma tag when allocating bounce pages.
This was fixed in revision 1.5 of alpha/alpha/busdma_machdep.c and
was never fixed in other busdma backends using bounce pages.
2003-07-01 16:54:54 +00:00
Scott Long
f6b1c44d1f Mega busdma API commit.
Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg.
Lockfunc allows a driver to provide a function for managing its locking
semantics while using busdma.  At the moment, this is used for the
asynchronous busdma_swi and callback mechanism.  Two lockfunc implementations
are provided: busdma_lock_mutex() performs standard mutex operations on the
mutex that is specified from lockfuncarg.  dftl_lock() is a panic
implementation and is defaulted to when NULL, NULL are passed to
bus_dma_tag_create().  The only time that NULL, NULL should ever be used is
when the driver ensures that bus_dmamap_load() will not be deferred.
Drivers that do not provide their own locking can pass
busdma_lock_mutex,&Giant args in order to preserve the former behaviour.

sparc64 and powerpc do not provide real busdma_swi functions, so this is
largely a noop on those platforms.  The busdma_swi on is64 is not properly
locked yet, so warnings will be emitted on this platform when busdma
callback deferrals happen.

If anyone gets panics or warnings from dflt_lock() being called, please
let me know right away.

Reviewed by:	tmm, gibbs
2003-07-01 15:52:06 +00:00
Alan Cox
dca96f1adc - Export pmap_enter_quick() to the MI VM. This will permit the
implementation of a largely MI pmap_object_init_pt() for vnode-backed
   objects.  pmap_enter_quick() is implemented via pmap_enter() on sparc64
   and powerpc.
 - Correct a mismatch between pmap_object_init_pt()'s prototype and its
   various implementations.  (I plan to keep pmap_object_init_pt() as
   the MD hook for device-backed objects on i386 and amd64.)
 - Correct an error in ia64's pmap_enter_quick() and adjust its interface
   to match the other versions.  Discussed with: marcel
2003-06-29 21:20:04 +00:00
Jeff Roberson
ab875ef896 - Construct a cpu topology map for Hyper Threading systems so that ULE may
take advantage of them.
2003-06-28 22:07:42 +00:00
David Xu
b8f480ab94 Add a machine depended function thread_siginfo, SA signal code
will use the function to construct a siginfo structure and use
the result to export to userland.

Reviewed by: julian
2003-06-28 06:34:08 +00:00
Scott Long
7f95801188 Catch amd64 up with the pending busdma async callback locking. Though this
mechanism might change in the near future, it's best to keep everything in
sync right now.

Reminded by:	peter
2003-06-28 06:07:06 +00:00
Peter Wemm
b6a5f89b4d Turn ips back on. 2003-06-27 23:11:22 +00:00
Peter Wemm
1e5d8b3b66 Oops, I only added a comment about why ips doesn't compile. Actually
comment it out for real.
2003-06-26 04:01:59 +00:00
Peter Wemm
ba1cabf4b9 Sync with i386 - add everything that compiles. There are a few drivers
that are trivially easy to fix (eg: ips) that I've not committed fixes for.
2003-06-26 03:49:54 +00:00
Peter Wemm
2d29639ebb Add back in the ability for pmap_mapdev() to use KVM if the region
being requested is outside of the range of the direct map region.  eg:
for pci windows.  While here, increase the minimum size of the direct
map region to be 4GB instead of 1GB.
2003-06-26 01:04:31 +00:00
Alan Cox
0183359659 MFi386
Add vm object locking to pmap_object_init_pt().
2003-06-23 06:10:52 +00:00
Hidetoshi Shimokawa
e07324646e Move KERNBASE to -2GB.
Currently, we cannot increase KVA more than 2GB.
2003-06-22 13:02:45 +00:00
Hidetoshi Shimokawa
bfcd2ec739 - Allow access to direct mapped region via /dev/kmem. This makes
'netstat -r' work.
- Use direct map for /dev/mem.
2003-06-22 12:59:43 +00:00
Hidetoshi Shimokawa
c1c1cc9c19 - Allocate a new PD Table if kernel grows beyond 1GB boundary.
Reviewed by: peter

- Use direct map in pmap_mapdev().
2003-06-22 12:55:20 +00:00
Hidetoshi Shimokawa
e14720d614 Use direct map in pmap_map().
This saves much KVA for vm_pages and you don't need to increase NKPT
for large physical memory anymore.

Suggested by: dfr
2003-06-20 14:09:33 +00:00
Hidetoshi Shimokawa
d25ac2fa68 Fix direct map page table for 2GB+ physical memory.
You may still need to increase NKPT for larger memory.
I have successfully booted 8GB system with NKPT=256.
2003-06-19 12:14:37 +00:00
Alan Cox
40ebf3e43a Fix a performance bug in all of the various implementations of
uma_small_alloc(): They always zeroed the page regardless of what the
caller requested.
2003-06-18 02:57:38 +00:00
David Xu
0e2a4d3aeb Rename P_THREADED to P_SA. P_SA means a process is using scheduler
activations.
2003-06-15 00:31:24 +00:00
Alan Cox
49a2507bd1 Migrate the thread stack management functions from the machine-dependent
to the machine-independent parts of the VM.  At the same time, this
introduces vm object locking for the non-i386 platforms.

Two details:

1. KSTACK_GUARD has been removed in favor of KSTACK_GUARD_PAGES.  The
different machine-dependent implementations used various combinations
of KSTACK_GUARD and KSTACK_GUARD_PAGES.  To disable guard page, set
KSTACK_GUARD_PAGES to 0.

2. Remove the (unnecessary) clearing of PG_ZERO in vm_thread_new.  In
5.x, (but not 4.x,) PG_ZERO can only be set if VM_ALLOC_ZERO is passed
to vm_page_alloc() or vm_page_grab().
2003-06-14 23:23:55 +00:00
Alan Cox
89f4fca265 Move the *_new_altkstack() and *_dispose_altkstack() functions out of the
various pmap implementations into the machine-independent vm.  They were
all identical.
2003-06-14 06:20:25 +00:00
Peter Wemm
77e2a274d0 GC unused cpu_wait() function 2003-06-11 05:20:33 +00:00
John Baldwin
6b9691f103 - Use IDTVEC() to declare IPI handlers since they are also IDT vectors.
- Make handlers for IPI's used by SMP kernels #ifdef SMP.
2003-06-06 17:45:25 +00:00
John Baldwin
e59ae32f18 - Document the thermal and performance counter LVT entries in the local
APIC.
- Add a lvt_thermal member to the LAPIC struct.
- Add constants for the SMI and INIT LVT delivery modes.
2003-06-06 17:22:15 +00:00
Marcel Moolenaar
c2e4eb969f Change the second (and last) argument of cpu_set_upcall(). Previously
we were passing in a void* representing the PCB of the parent thread.
Now we pass a pointer to the parent thread itself.
The prime reason for this change is to allow cpu_set_upcall() to copy
(parts of) the trapframe instead of having it done in MI code in each
caller of cpu_set_upcall(). Copying the trapframe cannot always be
done with a simply bcopy() or may not always be optimal that way. On
ia64 specifically the trapframe contains information that is specific
to an entry into the kernel and can only be used by the corresponding
exit from the kernel. A trapframe copied verbatim from another frame
is in most cases useless without some additional normalization.

Note that this change removes the assignment to td->td_frame in some
implementations of cpu_set_upcall(). The assignment is redundant.
A previous call to cpu_thread_setup() already did the exact same
assignment. An added benefit of removing the redundant assignment is
that we can now change td_pcb without nasty side-effects.

This change officially marks the ability on ia64 for 1:1 threading.

Not tested on: amd64, powerpc
Compile & boot tested on: alpha, sparc64
Functionally tested on: i386, ia64
2003-06-04 22:46:27 +00:00
Peter Wemm
7fc03ef474 Fix ALIGNED_POINTER(). sizeof((u_int32_t)) is not legal C. 2003-06-04 02:15:13 +00:00
Peter Wemm
babc58fd74 Fix restarted syscalls. When we rewind %rip, we also need to restore
all the argument registers etc since we have almost certainly have trashed
them by now.  Take particular car of %r10 since it held the original value
of %rcx (which we saved in tf_rcx on entry and doreti doesn't know this).
2003-06-02 21:56:08 +00:00
Peter Wemm
c35518b4ed Make this more compatable with libc_r. Make the internal types for storing
registers an array of longs rather than int.
2003-06-02 21:49:35 +00:00
David E. O'Brien
006124d811 Use __FBSDID(). 2003-06-02 16:32:55 +00:00
David E. O'Brien
9676a785e7 Use __FBSDID(). 2003-06-02 06:43:15 +00:00
Peter Wemm
193b147c05 MFi386: i386/include/asm.h rev 1.11: Do not abuse ##. 2003-06-02 05:59:35 +00:00
David E. O'Brien
69bb404192 Use C99 compatable asm statements. 2003-06-02 00:29:35 +00:00
David E. O'Brien
713c939103 Sync with i386/GENERIC ordering. 2003-06-01 20:26:38 +00:00
Peter Wemm
395aac85f8 MFi386: rev 1.56: remove break after return 2003-05-31 22:02:11 +00:00
Peter Wemm
0c5b3efcb0 MFi386: rev 1.23: use gdb_strlen()/gdb_strcpy() directly. 2003-05-31 22:00:57 +00:00
Peter Wemm
fbbfc4c335 MFi386: rev 1.50: remove unused variable 2003-05-31 21:58:55 +00:00