__compute_return_epc() uses CFC1 instruction which might result in a
coprocessor unusable exception since the process can lose its fpu
context by preemption.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

sys_nfsservctl() needs translation.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

No point in checking cpu_has_tlb before we've computed the CPU options.
So for now we just unconditionally set the option - Linux wouldn't
work without a TLB anyway.

Setting MIPS_CPU_4KTLB was missing for Alchemy and Sandcraft, add that
back.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Cleanup decoding of MIPSxx config registers.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix preemption and SMP problems in the FP emulator code.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Handle _PAGE_DIRTY correctly for CONFIG_64BIT_PHYS_ADDR on 32bit CPUs.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Better interface to run uncached cache setup code.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

* use 'unsigned long' as address supplied to au_write[bwl]()
* remove two already unused and commented structures
* added an ULL suffix to several address constants that use bits 35-32

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix D-cache aliasing problem in the PIO IDE driver potencially resulting
in the kernel or userspace seeing stale data.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix a few build warnings.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Need to include smp.h for the definition of smp_processor_id().

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Ustat needs a wrapper on n32.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Move sync into the delay slot here also.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Useless includes of everything, the kitchen sink and version.h ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Arrested for multiple offences of header file inclusion.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

We pass a kernel pointer to do_sigaltstack in sys32_sigaltstack, so
we need to do the set_fs(KERNEL_DS) thing around this call.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

NPTL, round one.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Build fix for certain configurations.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix BogoMIPS display on UP and some minor cosmetical things.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

fcntl64 needs to be wrapped for n32.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix one more case of computing the return EPC after the registers have
already been modified.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

When simulating ll/sc compute the return EPC before modifying the
registers.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Use fixed up pfn.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Detect the 4KEcR2 and for now detect handle it like the 4KEc.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fixed buglet with previous patch that broke non au1x builds.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Remove CONFIG_PM dependency from au1x wait in cpu_probe.
Additional work necessary to completely remove that config option.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Au1100 FB driver uplift for 2.6.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Antonino Daplas <adaplas@pol.net>

Fix race conditions for read_c0_entryhi. Remove broken ASID masks in
tlb-sb1.c. Make tlb-r4k.c and tlb-sb1.c more similiar and more efficient.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Remove useless casts.  Fix formatting.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix 64bit SMP TLB handler and stack frame handling, optimize 32bit SMP
TLB handlers a bit, match definitions in pgtable-{32,64}.h better.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

HUB interrupts are allocated per node, not per slice.  Make
manipulation of the interrupt mask register atomic by disabling
interrupts.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

HUB interrupts are allocated per node, not per slice.  Make manipulation
of the interrupt mask register atomic by disabling interrupts.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

R4300 delay slot.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Use compat_sigval_t in struct compat_siginfo.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

SECCOMP for MIPS.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Reformat; cosmetic cleanups.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Reformatting, remove debugging code.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Get rid of the the remains of 2.4-style ramdisk support.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Multithreaded core dumps.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

When CONFIG_PM is enabled, it uses the TOY_MATCH2 interrupt as the system
timer tick. Prior to this patch, if IDE IRQ probing occured, then the
TOY_MATCH2 interrupt would be permanently disabled, and no system timer
tick occurs. This patch corrects this situation by correctly registering
the TOY_MATCH2 interrupt so that IDE IRQ probing doesn't have adverse
side effects.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

sys_futex has 6 arguments.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

qtronix.c: Handle kmalloc failure.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Export shm_align_mask and flush_data_cache_page.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Put salone.o back into arclib.  It's a lib so doesn't harm if unused atm.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

It helps to not use a _mem_ function for requesting I/O space.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Gcc 4.0 fixes.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Use new txx9 serial driver.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix preemption bug.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Int controller fixes.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

One definition of back_to_back_c0_hazard too much.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Sparseify MIPS.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

On 24K we did always disable cache parity protection - obviously not
the greatest thing to do.  Try to enable parity protection, check if
we actually succeeded and print a message about the outcome of this.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

New hazard handling function back_to_back_c0_hazard() to handle back to
back mtc0 / mfc0 pairs from the same coprocessor register.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

ISOify.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Moved irq_tab_alchemy to the board specific irqmap.c files.
Cleaned up a to of warnings in dbdma.c.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Base Au1200 2.6 support.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix 'prctl' system call for IRIX. At this point IRIX 5.3 static binaries
are now working for 80% of the ones I have tried. The other ones that do
not work all fail in the same way with the same messages. Once that bug
is tracked down, we should be in good shape. Task locking still needs
some work.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Gross macro abuse.  Get rid of gpreg_t, vaddr_t, REG_TO_VA and
VA_TO_REG.  Who ever wrote this apparently did enjoy the C Puzzle Book.
ISBN 0201604612, a little old but still fun reading for the next
blackout ;)

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Cleanup fpuemuprivate declarations.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Convert struct hw_interrupt_type initializations to ISO C99 named
initializers.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

No barrier needed on au1x.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Comment correction after further investigation of issue.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix initialization. Unbreak the wait-for-completion loops. Code cleanup.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Switch SiByte drivers back to __raw_*() functions.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Define mem_*() I/O accessory functions that preserve byte addresses.
Add missing ____raw_*q() functions.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Merge do_boot_cpu() into the new style __cpu_up().

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

On multiprocessor systems the BogoMIPS for each CPU was reported was
the value for the last CPU having calibrated it's delay loop.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Define MAP_BASE for IP27

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Resurrect Cobalt support for 2.6.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Enable/disable irq's only if needed.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

-nostdlib boilerplate.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix compilation, and bring 32/64 bit variants more in line.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix wchan implementation, based on earlier by from Atsushi Nemoto.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Improved modules loader, more robust and works on 64bit kernels.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Until I figure out why NFS filesystems are having problems with
the 'load_irix_binary' and having kernel faults, Irix support is
disabled. I suspect locking of some sort, but I will now have to
investigate further.

Static IRIX binaries are now being detected properly and are using the
ELF interpreter found in this file.

Signed-off-by: Steven J. Hill <sjhill@realitydiluted.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Initialize iomem_resource.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Handle addresses beyond VMALLOC_END correctly.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Use intermediate variable.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

O2 doesn't have _that_ much RAM.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Changed all Au1x boards to noncoherent again.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

32-bit compatibility for various timer-related system calls.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Update to match the native siginfo structure and code.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

32-bit compatibility for ptrace GETEVENTMSG operation.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Implement 32-bit compatibility for waitid(2).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Waitid(2) now has 5 arguments.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Use generic compat_sys_wait4 to implement 32-bit wait4(2).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Allocate break code 513 to KDB.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Replace the complicated and broken attempt to clean interrupt by
something simple - doesn't need to be fast, after all.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

If you want RM7000 better fix it to build first ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

It's unwise to disable all interrupts of the boot node ;-)

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Rewrite to avoid the use of $at.  Unfortunately binutils 2.15 and CVS
binutils are broken and don't warn about this use of $at even though
gas is in .set noat mode so this for now is an accident waiting to
happen.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Enable RM7000 secondary cache for Atlas and Malta boards.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Moves a test which determines if we actually need to perform a
cacheflush to the right place.  That's a bug which is harmless on UP
but a severe bug on SMP.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Update MIPS to use the 4-level pagetable code thereby getting rid of
the compacrapability headers.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Document why calling smp_call_function will deadlock when called with
interrupts disabled.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Fix ptrace aliasing issue in copy_from_user_page / copy_to_user_page.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

25Kf is also physically indexed.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Add a few more PrId vendor IDs.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

20Kc and SB1 don't suffer from aliases.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Delete duplicate copy of fixrange_init.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>