Commit Graph

728 Commits

Author SHA1 Message Date
Jayachandran C.
2972a649c6 Remove save/restore of PageMask in tlb.c functions introduced in r209243.
If we save/restore the PageMask, the value set by the bootloader will
persist, and will cause problems later in TLB exception handler.
This caused a crash in AR71xx boards.

Also fixes the EntryHi mask in pte.h

Reported by: Luiz Otavio O Souza <lists.br@gmail.com>
Tested by:   Luiz Otavio O Souza <lists.br@gmail.com>

Approved by:	rrs (mentor)
2010-07-02 12:01:46 +00:00
John Baldwin
fc0de8f0b6 Move prototypes for kern_sigtimedwait() and kern_sigprocmask() to
<sys/syscallsubr.h> where all other kern_<syscall> prototypes live.
2010-06-30 18:03:42 +00:00
Jayachandran C.
4fddb8ed6f Add linker script and configuration file for n32 kernel.
Approved by:	rrs (mentor)
2010-06-24 10:14:31 +00:00
Jayachandran C.
9fa0972cf9 Merge jmallett@'s n64 work into HEAD - changeset 7
Initial support for n32 and n64 ABIs from
http://svn.freebsd.org/base/user/jmallett/octeon

Changes are:
 - syscall, exception and trap support for n32/n64 ABIs
 - 64-bit address space defines
 - _jmp_buf for n32/n64
 - casts between registers and ptr/int updated to work on n32/n64

Approved by:	rrs(mentor), jmallett
2010-06-24 08:08:43 +00:00
Adrian Chadd
7107f92fd6 Comment about the shared pins I know about. 2010-06-24 05:17:21 +00:00
Jayachandran C.
78fe0672b6 Merge jmallett@'s n64 work into HEAD - changeset 6
PTE flag cleanup from http://svn.freebsd.org/base/user/jmallett/octeon
- Rename PTE_xx flags to match their MIPS names
- Use the new pte_set/test/clear macros uniformly, instead of a mixture
  of mips_pg_xxx(), pmap_pte_x() macros and direct access.
- Remove unused macros and defines from pte.h and pmap.c

Discussed on freebsd-mips@

Approved by:	rrs(mentor), jmallett
2010-06-23 19:42:01 +00:00
Adrian Chadd
e3ded4845c AR71XX GPIO register definitions.
Reviewed by:	gonzo@
2010-06-23 03:59:26 +00:00
Adrian Chadd
7bc1af9566 Extend the AR71XX watchdog debugging and data.
* Add some per-device sysctl entries which record the watchdog state -
  whether it is armed; whether the last reboot was due to the watchdog.
* Add a per-device sysctl debug flag to enable logging watchdog arming/
  disarming.

Reviewed by:	gonzo@
2010-06-19 12:12:39 +00:00
Jayachandran C.
eac058828b Add support for newer XLS chips/boards in the GMAC driver.
Improved processor id code in board.h, remove unnecessary macros.

Approved by:	rrs(mentor)
2010-06-18 21:40:32 +00:00
Jayachandran C.
89b6177335 Merge jmallett@'s n64 work into HEAD - changeset 5
Remove unnecessary locking and sched_pin() call while creating a temporary
mapping.

Changes from http://svn.freebsd.org/base/user/jmallett/octeon

Approved by:	rrs (mentor), jmallett
2010-06-18 20:07:30 +00:00
Jayachandran C.
34da911965 Merge jmallett@'s n64 work into HEAD - changeset 4
Re-write tlb operations in C with a simpler API.
Update callers to use the new API.

Changes from http://svn.freebsd.org/base/user/jmallett/octeon

Approved by:	rrs(mentor), jmallett
2010-06-17 05:03:01 +00:00
Alan Cox
9124d0d6a3 Relax one of the new assertions in pmap_enter() a little. Specifically,
allow pmap_enter() to be performed on an unmanaged page that doesn't have
VPO_BUSY set.  Having VPO_BUSY set really only matters for managed pages.
(See, for example, pmap_remove_write().)
2010-06-11 15:49:39 +00:00
Alan Cox
ce18658792 Reduce the scope of the page queues lock and the number of
PG_REFERENCED changes in vm_pageout_object_deactivate_pages().
Simplify this function's inner loop using TAILQ_FOREACH(), and shorten
some of its overly long lines.  Update a stale comment.

Assert that PG_REFERENCED may be cleared only if the object containing
the page is locked.  Add a comment documenting this.

Assert that a caller to vm_page_requeue() holds the page queues lock,
and assert that the page is on a page queue.

Push down the page queues lock into pmap_ts_referenced() and
pmap_page_exists_quick().  (As of now, there are no longer any pmap
functions that expect to be called with the page queues lock held.)

Neither pmap_ts_referenced() nor pmap_page_exists_quick() should ever
be passed an unmanaged page.  Assert this rather than returning "0"
and "FALSE" respectively.

ARM:

Simplify pmap_page_exists_quick() by switching to TAILQ_FOREACH().

Push down the page queues lock inside of pmap_clearbit(), simplifying
pmap_clear_modify(), pmap_clear_reference(), and pmap_remove_write().
Additionally, this allows for avoiding the acquisition of the page
queues lock in some cases.

PowerPC/AIM:

moea*_page_exits_quick() and moea*_page_wired_mappings() will never be
called before pmap initialization is complete.  Therefore, the check
for moea_initialized can be eliminated.

Push down the page queues lock inside of moea*_clear_bit(),
simplifying moea*_clear_modify() and moea*_clear_reference().

The last parameter to moea*_clear_bit() is never used.  Eliminate it.

PowerPC/BookE:

Simplify mmu_booke_page_exists_quick()'s control flow.

Reviewed by:	kib@
2010-06-10 16:56:35 +00:00
Alan Cox
c99b7cc5c9 Don't set PG_WRITEABLE in init_pte_prot() (and thus pmap_enter()) unless
the page is managed.

Don't set the machine-independent layer's dirty field for the page being
mapped in init_pte_prot().  (The dirty field is only supposed to set when
a mapping is removed or write-protected and the page was managed and
modified.)

Determine whether or not to perform dirty bit emulation based on whether
or not the page is managed, i.e., pageable, not based on whether the page
is being mapped into the kernel address space.  Nearly all of the kernel
address space consists of unmanaged pages, so this has neglible impact on
the overhead of dirty bit emulation for the kernel address space.  However,
there can also exist unmanaged pages in the user address space.  Previously,
dirty bit emulation was unnecessarily performed on these pages.

Tested by:	jchandra@
2010-06-06 06:07:44 +00:00
Jayachandran C.
17dca144a2 Make vm_contig_grow_cache() extern, and use it when vm_phys_alloc_contig()
fails to allocate MIPS page table pages.  The current usage of VM_WAIT in
case of vm_phys_alloc_contig() failure is not correct, because:

"There is no guarantee that any of the available free (or cached) pages
after the VM_WAIT will fall within the range of suitable physical
addresses.  Every time this function sleeps and a single page is freed
(or cached) by someone else, this function will be reawakened.  With
a little bad luck, you could spin indefinitely."

We also add low and high parameters to vm_contig_grow_cache() and
vm_contig_launder() so that we restrict vm_contig_launder() to the range
of pages we are interested in.

Reported by: alc

Reviewed by:	alc
Approved by:	rrs (mentor)
2010-06-04 06:35:36 +00:00
Alan Cox
ef1315e957 Fix a KASSERT() that was broken in r208665.
Reported by:	jmallett
2010-06-01 04:38:05 +00:00
Alan Cox
b2830a9649 Eliminate a stale comment. 2010-05-31 06:06:10 +00:00
Alan Cox
c027892779 Merge portions of r208645 and supporting code from the i386 pmap:
When I pushed down the page queues lock into pmap_is_modified(), I created
  an ordering dependence: A pmap operation that clears PG_WRITEABLE and calls
  vm_page_dirty() must perform the call first.  Otherwise, pmap_is_modified()
  could return FALSE without acquiring the page queues lock because the page
  is not (currently) writeable, and the caller to pmap_is_modified() might
  believe that the page's dirty field is clear because it has not seen the
  effect of the vm_page_dirty() call.

  When I pushed down the page queues lock into pmap_is_modified(), I
  overlooked one place where this ordering dependence is violated:
  pmap_enter().  In a rare situation pmap_enter() can be called to replace a
  dirty mapping to one page with a mapping to another page.  (I say rare
  because replacements generally occur as a result of a copy-on-write fault,
  and so the old page is not dirty.)  This change delays clearing PG_WRITEABLE
  until after vm_page_dirty() has been called.

  Fixing the ordering dependency also makes it easy to introduce a small
  optimization: When pmap_enter() used to replace a mapping to one page with a
  mapping to another page, it freed the pv entry for the first mapping and
  later called the pv entry allocator for the new mapping.  Now, pmap_enter()
  attempts to recycle the old pv entry, saving two calls to the pv entry
  allocator.
2010-05-31 01:43:02 +00:00
Alan Cox
c68c71f9b8 Simplify the inner loop of get_pv_entry(): While iterating over the page's
pv list, there is no point in checking whether or not the pv list is empty,
wait instead until the loop completes.
2010-05-30 20:31:12 +00:00
Jayachandran C.
9be223a169 Fix lock order reversal, unlock page queue and pmap locks before
calling uma_zfree().
Also if needed, acquire page queue lock before modifying pte page
attributes.

Approved by:	rrs (mentor)
2010-05-28 12:05:56 +00:00
Neel Natu
8ccf57985c Get rid of unused variable 'virtual_sys_start'. 2010-05-28 05:34:43 +00:00
Neel Natu
03cfd5266e If 'timer2hz' is zero then we don't need to call 'timer2clock()' directly. It
will be called automatically by 'timer1clock()'.

Do profiling as often as possible by running it as the same frequency as
'timer1hz'. The statistics clock is run as close to 128Hz as possible.

Pointed out by: mav@
2010-05-28 02:00:15 +00:00
Jayachandran C.
fde7da314a Call VM_WAIT in pmap_ptpgzone_allocf() if M_WAITOK is set.
Removed unused variable.

Approved by:	rrs (mentor)
2010-05-27 10:05:40 +00:00
Neel Natu
87164cbbaa Simplify clock interrupt handling on mips by using the new KPI - timer1clock()
and timer2clock().

Dynamically adjust the tick frequency depending on the value of 'hz'. Tested
with hz values of 100, 1000 and 2000.
2010-05-27 01:27:25 +00:00
Oleksandr Tymoshenko
522c90a143 - Fix kseg0 address calculation - it doesn't always start at
page boundary
- Add cache ops to ensure memory validity before/after
    copy operation
2010-05-26 22:38:45 +00:00
Alan Cox
c46b90e90a Push down page queues lock acquisition in pmap_enter_object() and
pmap_is_referenced().  Eliminate the corresponding page queues lock
acquisitions from vm_map_pmap_enter() and mincore(), respectively.  In
mincore(), this allows some additional cases to complete without ever
acquiring the page queues lock.

Assert that the page is managed in pmap_is_referenced().

On powerpc/aim, push down the page queues lock acquisition from
moea*_is_modified() and moea*_is_referenced() into moea*_query_bit().
Again, this will allow some additional cases to complete without ever
acquiring the page queues lock.

Reorder a few statements in vm_page_dontneed() so that a race can't lead
to an old reference persisting.  This scenario is described in detail by a
comment.

Correct a spelling error in vm_page_dontneed().

Assert that the object is locked in vm_page_clear_dirty(), and restrict the
page queues lock assertion to just those cases in which the page is
currently writeable.

Add object locking to vnode_pager_generic_putpages().  This was the one
and only place where vm_page_clear_dirty() was being called without the
object being locked.

Eliminate an unnecessary vm_page_lock() around vnode_pager_setsize()'s call
to vm_page_clear_dirty().

Change vnode_pager_generic_putpages() to the modern-style of function
definition.  Also, change the name of one of the parameters to follow
virtual memory system naming conventions.

Reviewed by:	kib
2010-05-26 18:00:44 +00:00
Neel Natu
5e612d3007 Get rid of empty and unused KSEG0TEXT macros. 2010-05-25 05:45:16 +00:00
Neel Natu
01ab508d37 Fix mips kernel build breakage caused by revision 208504. 2010-05-25 05:42:12 +00:00
Alan Cox
567e51e18c Roughly half of a typical pmap_mincore() implementation is machine-
independent code.  Move this code into mincore(), and eliminate the
page queues lock from pmap_mincore().

Push down the page queues lock into pmap_clear_modify(),
pmap_clear_reference(), and pmap_is_modified().  Assert that these
functions are never passed an unmanaged page.

Eliminate an inaccurate comment from powerpc/powerpc/mmu_if.m:
Contrary to what the comment says, pmap_mincore() is not simply an
optimization.  Without a complete pmap_mincore() implementation,
mincore() cannot return either MINCORE_MODIFIED or MINCORE_REFERENCED
because only the pmap can provide this information.

Eliminate the page queues lock from vfs_setdirty_locked_object(),
vm_pageout_clean(), vm_object_page_collect_flush(), and
vm_object_page_clean().  Generally speaking, these are all accesses
to the page's dirty field, which are synchronized by the containing
vm object's lock.

Reduce the scope of the page queues lock in vm_object_madvise() and
vm_page_dontneed().

Reviewed by:	kib (an earlier version)
2010-05-24 14:26:57 +00:00
Jayachandran C.
f66c469335 Remove unused code in sys/mips/rmi :
- ehcireg.h,ehcivar.h : USB related files from old merge
 - pcibus.c : was merged into xlr_pci.c earlier
 - xlr_boot1_console.c : obsolete console code using bootloader hooks
 - sys/mips/rmi/perfmon* : obsolete custom performance monitoring code

Approved by:	rrs (mentor)
2010-05-24 06:01:37 +00:00
Konstantin Belousov
afe1a68827 Reorganize syscall entry and leave handling.
Extend struct sysvec with three new elements:
sv_fetch_syscall_args - the method to fetch syscall arguments from
  usermode into struct syscall_args. The structure is machine-depended
  (this might be reconsidered after all architectures are converted).
sv_set_syscall_retval - the method to set a return value for usermode
  from the syscall. It is a generalization of
  cpu_set_syscall_retval(9) to allow ABIs to override the way to set a
  return value.
sv_syscallnames - the table of syscall names.

Use sv_set_syscall_retval in kern_sigsuspend() instead of hardcoding
the call to cpu_set_syscall_retval().

The new functions syscallenter(9) and syscallret(9) are provided that
use sv_*syscall* pointers and contain the common repeated code from
the syscall() implementations for the architecture-specific syscall
trap handlers.

Syscallenter() fetches arguments, calls syscall implementation from
ABI sysent table, and set up return frame. The end of syscall
bookkeeping is done by syscallret().

Take advantage of single place for MI syscall handling code and
implement ptrace_lwpinfo pl_flags PL_FLAG_SCE, PL_FLAG_SCX and
PL_FLAG_EXEC. The SCE and SCX flags notify the debugger that the
thread is stopped at syscall entry or return point respectively.  The
EXEC flag augments SCX and notifies debugger that the process address
space was changed by one of exec(2)-family syscalls.

The i386, amd64, sparc64, sun4v, powerpc and ia64 syscall()s are
changed to use syscallenter()/syscallret(). MIPS and arm are not
converted and use the mostly unchanged syscall() implementation.

Reviewed by:	jhb, marcel, marius, nwhitehorn, stas
Tested by:	marcel (ia64), marius (sparc64), nwhitehorn (powerpc),
	stas (mips)
MFC after:	1 month
2010-05-23 18:32:02 +00:00
Neel Natu
9f3b3fe64a - Use ptpgzone zone to allocate page table pages irrespective of the amount of
memory on a platform. Tested on the Sibyte with 256MB and 1GB memory
  configurations.

- Replace vtophys() with MIPS_KSEG0_TO_PHYS() to convert a page table
  page's virtual address to physical. We can safely do this because
  page table pages are allocated out of KSEG0.

- Add an assertion to verify that when a page table page is freed it
  contains all zeroes. We can now use it after allocation without
  zeroing it.
2010-05-22 21:38:57 +00:00
John Baldwin
e826ef1ec4 - Adjust the whitespace for the lines that output fields in 'show pcpu' in
DDB so that all the fields line up.
- Print out the tid of the per-CPU idlethread instead of the pid since
  the idle process is now shared across all idle threads.

MFC after:	1 month
2010-05-21 17:17:56 +00:00
Jayachandran C.
1a9950f319 Changes to boot on a subset of threads on an XLR/XLS core.
- Adds re-partitioning TLB per core for enabled threads.
- Adds hardware thread id to cpuid mapping
- updates rge driver packet distribution and message ring handling
  threads to be started based on hardware thread id.
- remove unused early debugging code to set control registers.
- coding style fixes

Approved by:	rrs (mentor)
2010-05-21 05:34:19 +00:00
Rui Paulo
fae088e873 Add a device description. 2010-05-18 17:01:07 +00:00
Neel Natu
c0fd703892 Fix Sibyte SMP kernel breakage caused by r208249.
We need to include the header file that provides declaration of the
smp_topo_none() function.
2010-05-18 05:12:54 +00:00
Randall Stewart
50e5b49dea Adds the file I forgot to add... that handles
the mpwait.S for RMI

Approved by:	JC
2010-05-18 04:08:58 +00:00
Randall Stewart
bc198428ea Adds JC's cleanup patches that fix it so
we call an platform dependant topo function as
well as clean up all the XLR specific ifdefs around
smp platform init.

Obtained from:	JC
2010-05-18 04:02:34 +00:00
Alan Cox
9ab6032f73 On entry to pmap_enter(), assert that the page is busy. While I'm
here, make the style of assertion used by pmap_enter() consistent
across all architectures.

On entry to pmap_remove_write(), assert that the page is neither
unmanaged nor fictitious, since we cannot remove write access to
either kind of page.

With the push down of the page queues lock, pmap_remove_write() cannot
condition its behavior on the state of the PG_WRITEABLE flag if the
page is busy.  Assert that the object containing the page is locked.
This allows us to know that the page will neither become busy nor will
PG_WRITEABLE be set on it while pmap_remove_write() is running.

Correct a long-standing bug in vm_page_cowsetup().  We cannot possibly
do copy-on-write-based zero-copy transmit on unmanaged or fictitious
pages, so don't even try.  Previously, the call to pmap_remove_write()
would have failed silently.
2010-05-16 23:45:10 +00:00
Randall Stewart
4542827d4d This pushes all of JC's patches that I have in place. I
am now able to run 32 cores ok.. but I still will hang
on buildworld with a NFS problem. I suspect I am missing
a patch for the netlogic rge driver.

JC check and see if I am missing anything except your
core-mask changes

Obtained from:	JC
2010-05-16 19:43:48 +00:00
Warner Losh
be73c87b5c Remove some stray ';'s
Submitted by:	marc balmer
2010-05-13 01:50:29 +00:00
Alan Cox
3c4a24406b Push down the page queues into vm_page_cache(), vm_page_try_to_cache(), and
vm_page_try_to_free().  Consequently, push down the page queues lock into
pmap_enter_quick(), pmap_page_wired_mapped(), pmap_remove_all(), and
pmap_remove_write().

Push down the page queues lock into Xen's pmap_page_is_mapped().  (I
overlooked the Xen pmap in r207702.)

Switch to a per-processor counter for the total number of pages cached.
2010-05-08 20:34:01 +00:00
Alan Cox
d238560c7c Eliminate dead code. 2010-05-06 04:23:52 +00:00
Neel Natu
7ee44a58d7 Fix DDB backtrace involving kernel modules.
We can no longer assume that all valid program counter values reside
within the kernel object file.
2010-05-05 04:37:45 +00:00
Maxim Sobolev
e50d35e6c6 Add new tunable 'net.link.ifqmaxlen' to set default send interface
queue length. The default value for this parameter is 50, which is
quite low for many of today's uses and the only way to modify this
parameter right now is to edit if_var.h file. Also add read-only
sysctl with the same name, so that it's possible to retrieve the
current value.

MFC after:	1 month
2010-05-03 07:32:50 +00:00
Marius Strobl
f6ffc3c26b Remove redundant checking of sc_leaving (uart_intr() already handles this).
Approved by:	marcel
2010-05-02 19:07:19 +00:00
Warner Losh
a932985f50 Enable AH_RXCFG_SDMAMW_4BYTES option. See NOTES file for why this is
workaround (WAR) is needed.
2010-05-01 16:39:46 +00:00
Warner Losh
7e005410db Put the -current debugging options back into AR71XX. 2010-05-01 16:38:40 +00:00
Randall Stewart
ad30c76f94 Bug in the memory mapping module. The wrong
physaddr was being used in the macro (1 should be
used not 2)...

Obtained from:	JC
2010-04-30 17:12:20 +00:00
Kip Macy
2965a45315 On Alan's advice, rather than do a wholesale conversion on a single
architecture from page queue lock to a hashed array of page locks
(based on a patch by Jeff Roberson), I've implemented page lock
support in the MI code and have only moved vm_page's hold_count
out from under page queue mutex to page lock. This changes
pmap_extract_and_hold on all pmaps.

Supported by: Bitgravity Inc.

Discussed with: alc, jeffr, and kib
2010-04-30 00:46:43 +00:00
Alan Cox
030d4cda77 Adapt i386 r207205 to mips: Clearing PV_TABLE_REF and setting the page's
PG_REFERENCED flag in pmap_protect() can't really be justified, so don't
do it.
2010-04-28 04:25:36 +00:00
Konstantin Belousov
8bac98182a Style: use #define<TAB> instead of #define<SPACE>.
Noted by:	bde, pluknet gmail com
MFC after:	11 days
2010-04-27 09:48:43 +00:00
Alan Cox
7b85f59183 Resurrect pmap_is_referenced() and use it in mincore(). Essentially,
pmap_ts_referenced() is not always appropriate for checking whether or
not pages have been referenced because it clears any reference bits
that it encounters.  For example, in mincore(), clearing the reference
bits has two negative consequences.  First, it throws off the activity
count calculations performed by the page daemon.  Specifically, a page
on which mincore() has called pmap_ts_referenced() looks less active
to the page daemon than it should.  Consequently, the page could be
deactivated prematurely by the page daemon.  Arguably, this problem
could be fixed by having mincore() duplicate the activity count
calculation on the page.  However, there is a second problem for which
that is not a solution.  In order to clear a reference on a 4KB page,
it may be necessary to demote a 2/4MB page mapping.  Thus, a mincore()
by one process can have the side effect of demoting a superpage
mapping within another process!
2010-04-24 17:32:52 +00:00
Konstantin Belousov
ed7806879b Move the constants specifying the size of struct kinfo_proc into
machine-specific header files. Add KINFO_PROC32_SIZE for struct
kinfo_proc32 for architectures providing COMPAT_FREEBSD32. Add
CTASSERT for the size of struct kinfo_proc32.

Submitted by:	pluknet
Reviewed by:	imp, jhb, nwhitehorn
MFC after:	2 weeks
2010-04-24 12:49:52 +00:00
Juli Mallett
07b9cc2f46 Most MIPS systems have a comparatively-sparse physical memory layout. Switch
to using the sparse physseg layout in the VM system.
2010-04-24 03:11:35 +00:00
Juli Mallett
c805ff09d5 Build some nops into CLEAR_STATUS here to make sure that the following
instructions can't be interrupted.
2010-04-23 19:48:31 +00:00
Juli Mallett
38f836dbb3 o) Remove default MAXMEM on SWARM; pmap can readily use lmem for >512M
physical addresses.
o) Set a local maxmem in sb_machdep.c to avoid trying to use pages over 2^64
   under 32-bit ABIs.  Our pmap needs corrected to use vm_paddr_t consistently,
   then we can make vm_paddr_t 64-bit under 32-bit ABIs and add code in pmap
   to limit phys_avail by the maximum PFN that a 32-bit PTE can hold.
2010-04-23 19:20:56 +00:00
Juli Mallett
562d4fbb7c Large memory mappings are always CPU local and always done with interrupts
disabled.  Be doubly-sure that we don't try to do a TLB shootdown on SMP
systems for those mappings.

Submitted by:	C. Jayachandran
2010-04-23 18:53:17 +00:00
Neel Natu
efa50b120d Fix compilation error.
tick.c:298:5: error: "KDTRACE_HOOKS" is not defined
2010-04-23 01:34:01 +00:00
Andrew Thompson
b850ecc180 Change USB_DEBUG to #ifdef and allow it to be turned off. Previously this had
the illusion of a tunable setting but was always turned on regardless.

MFC after:	1 week
2010-04-22 21:31:34 +00:00
Rui Paulo
0017771c68 Add the necessary hooks for dtrace cyclic module. 2010-04-20 17:22:20 +00:00
Rui Paulo
153bfab76a Remove svn:executable prop. 2010-04-20 10:42:08 +00:00
Juli Mallett
fe7d6b6e69 Fix MALTA64 build. 2010-04-19 09:03:34 +00:00
Juli Mallett
540247e8c1 Remove unused file. 2010-04-19 07:51:57 +00:00
Juli Mallett
745bba1ab0 o) Eliminate the "stand" frame and its use. Use CALLFRAME_* everywhere.
o) Use <machine/asm.h> macros for register-width, etc., rather than doing it
   by hand in a few more assembly files.
o) Reduce diffs between various bits of TLB refill code in exception.S and
   between interrupt processing code.
o) Use PTR_* to operate on registers that are pointers (e.g. sp).
o) Add and use a macro, CLEAR_PTE_SWBITS rather than using the
   mysteriously-named WIRED_SHIFT to select bits to truncate when loading PTEs.
o) Don't doubly disable interrupts by moving zero to the status register,
   especially since that has the nasty side-effect of taking us out of 64-bit
   mode.
o) Use CLEAR_STATUS to disable interrupts the first time.
o) Keep SR_PX set as well as SR_[KSU]X when doing exception processing.  This
   is the bit that determines whether 64-bit operations are allowed.
o) Don't enable interrupts until configure_final(), like most other ports.
2010-04-19 07:34:26 +00:00
Juli Mallett
5f3173b517 o) Fix XKPHYS physical address extraction. Also define cache coherency
attributes for XKPHYS.
o) Make coprocessor 0 accessor function macros for register+selector registers
   take the full name so that e.g. (as done in this commit), prid selector 1
   can be written through mips_wr_ebase() rather than mips_wr_prid1().
o) Allow for sign extension of 32-bit segment addresses.
o) Remove an unused MIPS-I register number.
2010-04-19 06:01:58 +00:00
Juli Mallett
ca596a25f0 o) Add a VM find-space option, VMFS_TLB_ALIGNED_SPACE, which searches the
address space for an address as aligned by the new pmap_align_tlb()
   function, which is for constraints imposed by the TLB. [1]
o) Add a kmem_alloc_nofault_space() function, which acts like
   kmem_alloc_nofault() but allows the caller to specify which find-space
   option to use. [1]
o) Use kmem_alloc_nofault_space() with VMFS_TLB_ALIGNED_SPACE to allocate the
   kernel stack address on MIPS. [1]
o) Make pmap_align_tlb() on MIPS align addresses so that they do not start on
   an odd boundary within the TLB, so that they are suitable for insertion as
   wired entries and do not have to share a TLB entry with another mapping,
   assuming they are appropriately-sized.
o) Eliminate md_realstack now that the kstack will be appropriately-aligned on
   MIPS.
o) Increase the number of guard pages to 2 so that we retain the proper
   alignment of the kstack address.

Reviewed by:	[1] alc
X-MFC-after:	Making sure alc has not come up with a better interface.
2010-04-18 22:32:07 +00:00
Rui Paulo
685b0bb814 Delete svn:executable prop. 2010-04-18 18:43:36 +00:00
Juli Mallett
a27e66e8f5 o) Make pcb_onfault a pointer rather than an obscure integer value.
o) Mask off PAGE_MASK bits in pmap_update_page, etc., rather than modifying the
   badvaddr in trapframe.  Some nearby interfaces already did this.
o) Make PTEs "unsigned int" for now, not "unsigned long" -- we are only ready
   for them to be 32-bit on 64-bit platforms.
o) Rather than using pmap_segmap and calculating the offset into the page table
   by hand in trap.c, use pmap_pte().
o) Remove unused quad_syscall variable in trap.c.
o) Log things for illegal instructions like we do for bad page faults.
o) Various cast cleanups related to how to print registers.
o) When logging page faults, show the page table information not just for the
   program counter, but for the fault address.
o) Modify support.S to use ABI-neutral macros for operating on pointers.
o) Consistently use CALLFRAME_SIZ rather than STAND_FRAME_SIZE, etc.
o) Remove unused insque/remque functions.
o) Remove some coprocessor 0 accessor functions implemented in assembly that
   are unused and have inline assembly counterparts.
2010-04-17 09:42:07 +00:00
Juli Mallett
2ab78e3ca5 o) Add NPDEPG, like NPTEPG but for PDEs.
o) Remove NBPG, PGOFSET and PGSHIFT.  Use the standard names.
o) Remove some unused macros and move things from param.h to vmparam.h that
   belong in the latter.  (Actually, all of the kernel segment values, virtual
   addresses, etc., belong in one place, but this is a step in the right
   direction.)
2010-04-17 07:20:01 +00:00
Juli Mallett
b6777295a6 o) Add SMP support for Octeon using U-Boot to launch all the processors at the
same time.
o) Remove some unused trivial uart functions from octeon_machdep now that the
   uart part is fully working and they are unused.
o) Use __func__ instead of __FUNCTION__.
o) Use intr_*() instead of other routines that do the same thing.
o) Remove some duplicate printfs from the Octeon port, as well as duplicate
   setting of Maxmem.
o) Use the right frequency divider on Octeon.
o) Use PCPU_GET(cpuid) consistently to get the cpuid of the running core.
o) Remove some unused macros in the Octeon port.
o) Use mips_sync() around use of the global dpcpu, whose value may not be
   visible to APs at first.
o) When loading the first thread's stack, use macros to make the code correct
   for n64 as well.
o) Remove stub, do-nothing FAU init/enable/disable functions from the RGMX
   driver.
2010-04-17 03:08:13 +00:00
Juli Mallett
a97a1ee3d9 o) Back out my previous change to SWARM; some of it was to address an issue
that turned out to be unrelated, and the rest was, as pointed out by Neel,
   just wrong-headed.
o) Tweak mem.c to fix use of /dev/kmem for direct-mapped addresses.
2010-04-17 01:49:50 +00:00
Juli Mallett
b92f01b79c o) Use inline functions to access coprocessor 0 registers rather than external
ones implemented using assembly.
o) Use TRAPF_USERMODE() consistently rather than USERMODE().  Eliminate
   <machine/psl.h> as a result.
o) Use intr_*() rather than *intr(), consistently.
o) Use register_t instead of u_int in some trap code.
o) Merge some more endian-related macros to machine/asm.h from NetBSD.
o) Add PTR_LI macro, which loads an address with the correct sign-extension for
   a pointer.
o) Restore interrupts when bailing out due to an excessive IRQ in
   nexus_setup_intr().
o) Remove unused functions from psraccess.S.
o) Enter temporary virtual entries for large memory access into the page tables
   rather than simply hoping they stay resident in the TLB and we don't need to
   do a refill for them.
o) Abstract out large memory mapping setup/teardown using some macros.
o) Do mips_dcache_wbinv_range() when using temporary virtual addresses just
   like we do when we can use the direct map.
2010-04-17 01:17:31 +00:00
Juli Mallett
e586cf9a28 o) Remove code related to VM_ALLOC_WIRED_TLB_PG_POOL, VM_KERNEL_ALLOC_OFFSET
and floating pages.  They are unused and unsupported.
2010-04-17 00:05:22 +00:00
Juli Mallett
2ae5ecf8a2 Adjust limits and formats for ABIs with 64-bit longs. 2010-04-16 23:54:56 +00:00
Juli Mallett
11484eb34f o) Use the direct map where possible for uiomove_fromphys, based on code from
sparc64.
o) Use uiomove_fromphys rather than the broken fpage mechanism for /dev/mem.
o) Update sf_buf allocator to not share buffers and to do a pmap_qremove when
   done with an sf_buf so as to better track valid mappings.
2010-04-16 23:48:28 +00:00
Juli Mallett
d0985cfb41 o) Fix the intr_* functions to not spam the whole status register, just the IE
bit.
o) Remove some unused inlines.
o) Generate CP0 access functions for 64-bit TLB registers when building for
   n64.
o) Add an inline function version of the COP0_SYNC macro.
2010-04-16 23:46:30 +00:00
Juli Mallett
4e859425ae Set KERNLOADADDR and TARGET_BIG_ENDIAN for SWARM. 2010-04-16 23:42:19 +00:00
Juli Mallett
4076170459 Remove some unused header files. 2010-04-16 02:56:24 +00:00
Neel Natu
923ca9167b Destroy the pmap 'pm_mutex' in pmap_release() otherwise we will panic
subsequently in pmap_pinit() with the following signature:

panic: lock "pmap" 0xc7878bc8 already initialized

This bug was uncovered by the changes made to vm_map.c in r206140.
2010-04-14 01:57:53 +00:00
Neel Natu
0a5cd2607a Revert the vm_machdep.c part of r205072.
This causes a panic in vm_thread_dispose() when it tries to add this kstack
to the kstack cache. This happens only when 'td_kstack' is not (PAGE_SIZE * 2)
bytes aligned and we have unmapped the page at that address in cpu_thread_alloc.

Pointed out by: nwhitehorn@
2010-04-14 01:29:31 +00:00
Nathan Whitehorn
ad723e42a4 Fix a bug where bus_dma_load_xxx() would not bounce misaligned buffers
due to rounding the buffer's physical address to the beginning of its
page. This fixes a panic in arge(4) when using PPPoE.

Reported by:	Jakob van Santen <vansanten at wisc dot edu>
Reviewed by:	gonzo
Obtained from:	amd64
2010-04-09 01:14:11 +00:00
Warner Losh
b938b7a366 Add BUS_SPACE_UNRESTRICTED and define it to be ~0, just like all the
other platforms.
2010-04-08 19:34:55 +00:00
Oleksandr Tymoshenko
d51a8afbfe - Fix mutex type for miibus_mtx: it's not spinlock, it's def lock 2010-04-08 18:32:13 +00:00
Warner Losh
cd1c19dd7b Enable module builds now that the build completes for them. This
should get them into the universe rotation.
2010-03-29 22:03:55 +00:00
Neel Natu
bfd506a024 Replace sb_store64()/sb_load64() with mips3_sd()/mips3_ld() respectively.
Obtained from NetBSD.

Suggested by: jmallett@
2010-03-26 07:15:27 +00:00
Nathan Whitehorn
a107d8aac9 Change the arguments of exec_setregs() so that it receives a pointer
to the image_params struct instead of several members of that struct
individually. This makes it easier to expand its arguments in the future
without touching all platforms.

Reviewed by:	jhb
2010-03-25 14:24:00 +00:00
Neel Natu
b5f18aa6da Fix periodic "t_delta 16.01359db7eb5eb3c0 too long" messages on the console by
accounting for the "lost time" between when the timer interrupt fired
and when clock_intr() actually started executing.
2010-03-24 04:52:15 +00:00
Neel Natu
69a5a0bfea Sibyte provides a 64-bit read-only counter that counts at half the processor
frequency. This counter can be accessed coherently from both cores.

Use this as the preferred timecounter for the SWARM kernels.

The CP0 COUNT register is unusable as the timecounter on SMP platforms because
the COUNT registers on different CPUs are not guaranteed to be in sync.
2010-03-20 05:49:06 +00:00
Neel Natu
293f20dffb Make sure that the registers 'v0' and 'v1' are properly sign-extended
when sb_load64() returns.

Some 32-bit arithmetic operations (e.g. subu) have unpredicatable results
when operating on 64-bit registers that are not properly sign-extended.
2010-03-20 05:21:14 +00:00
Neel Natu
cf4459fb01 Get rid of unused macro MIPS_MEM_RID.
Suggested by: Alexandr Rybalko (ray@dlink.ua)
2010-03-20 05:10:44 +00:00
Neel Natu
de88808f0a This change enables use of physical memory that is beyond the direct
mapped kseg0 region.

The basic idea is to use KVA from the kseg2 region for mapping page
table pages that lie beyond the direct mapped region.

The TLB miss handler can now recursively fault into the TLB invalid
handler if it dereferences a kseg2 page table page address that is not
in the TLB.

Tested by: JC (c.jayachandran@gmail.com)
2010-03-20 05:07:15 +00:00
Warner Losh
560da96e36 Go ahead and add USB support to the generic config. 2010-03-14 19:04:42 +00:00
Juli Mallett
0c7964a064 o) Use octeon_fpa_alloc_phys in a situation in which we don't need a usable
pointer, rather than octeon_fpa_alloc.
o) Report half duplex status properly.
o) Do not unconditionally update the last known link status in the softc.  If
   report_link isn't set, when octeon_rgmx_config_speed is called the first
   time it will tell the driver (essentially) that we have already marked the
   interface up.  Likewise, don't change media speed and duplex if only the
   link status is at issue. [1]
o) Remove manual changing of link state and let octeon_rgmx_config_speed do the
   heavy lifting. [1]

Reviewed by:	[1] imp
Sponsored by:	Packet Forensics
2010-03-13 04:55:47 +00:00
Neel Natu
28b49236be - Enable kernel stack guard page.
- Unmap the unused kernel stack page that we cannot use because it is
  not aligned on a (PAGE_SIZE * 2) boundary.
2010-03-12 07:08:20 +00:00
Neel Natu
2200b28e5f Make the ddb command "show tlb" SMP friendly.
It now accepts an argument to dump out the tlb of a particular cpu.
2010-03-12 03:49:17 +00:00
Juli Mallett
f1112d2f47 o) Send packets being queued for transmission up to BPF if there's a listener.
o) Properly configure the CAM to handle IFF_PROMISC and note where IFF_ALLMULTI
   handling would go if we didn't already force the NIC to receive all
   multicast traffic.

Reviewed by:	imp
Sponsored by:	Packet Forensics
2010-03-12 02:56:45 +00:00
Juli Mallett
56c96c364e Add bpf and random to Octeon configurations, since they're needed to run
dhclient and ssh respectively.

Reviewed by:	imp
2010-03-11 22:29:45 +00:00
Juli Mallett
9b98f51885 Don't force single user on Octeon anymore. 2010-03-11 22:25:53 +00:00
Juli Mallett
58d4fd1fdc o) Eliminate use of sc->typestr, which is always NULL.
o) Inline octeon_rgmx_mark_ready into octeon_rgmx_init.
o) Add a media status handler that reports link and media status.
o) Set link state when if_init is called.
o) Remove some printfs related to driver state changes.
o) Remove some gratuitous comments.

Reviewed by:	imp
Sponsored by:	Packet Forensics
2010-03-11 22:22:06 +00:00