| Age | Commit message (Collapse) | Author |
|---|
|
IRQs disabling in flush_cache_4096 for cache purge. Under certain
workloads we would get an IRQ in the middle of a purge operation,
and the cachelines would remain in an inconsistent state, leading
to occasional stack corruption.
Signed-off-by: Takeo Takahashi <takahashi.takeo@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Set the SHM alignment at runtime, based off of probed cache desc.
Optimize get_unmapped_area() to only colour align shared mappings.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This implements initial support for the vsyscall page on SH.
At the moment we leave it configurable due to having nommu
to support from the same code base. We hook it up for the
signal trampoline return at present, with more to be added
later, once uClibc catches up.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
flush_cache_mm() wraps in to flush_cache_all(), which is rather
excessive given that the number of PTEs within the specified context
are generally quite low. Optimize for walking the mm's VMA list and
selectively flushing the VMA ranges from the dcache. Invalidate the
icache only if a VMA sets VM_EXEC.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Figure out the cache desc entry_mask at runtime, and remove
hard-coded assumption about the cacheline size.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This implements preliminary support for the L2 caches found
on newer SH-4A CPUs.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This was falling a bit behind..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Implement optimized copies of readsl()/writesl().
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Add llsc to cpu_flags[] and comment cpu-features.h.
Signed-off-by: Jamie Lenehan <nynaeve@twibble.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Encode processor flags in AT_HWCAP in the ELF auxiliary vector.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This enables support for 4K stacks on SH.
Currently this depends on DEBUG_KERNEL, but likely all boards
will switch to this as the default in the future.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This was previously unimplemented..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This adds a DEBUG_STACK_USAGE and DEBUG_STACKOVERFLOW for SH.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This solution isn't very optimal, but it's generaly the behaviour that
we want..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Some more machvec overhauling and setup code cleanup. Kill off
get_system_type() and platform_setup(), we can do these both
through the machvec. While we're add it, kill off more useless
mach.c's and drop some legacy cruft from setup.c.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This adds support for the SE7343 board.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This adds support for the SH7710 VoIP Gateway board.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
The generic hardirq layer already takes care of a lot of the
appropriate locking and disabling for us, no need to duplicate
it in the handlers..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Formerly implemented by ADX, we can use this generically,
so move it over.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
None of these have been maintained in years, and no one seems to
be interested in doing so, so just get rid of them.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
A simple debugging aid for easier visibility of the respective
cachelines.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
A trivial bug breaking the build on sh4eb.
Signed-off-by: Nobuhiro Iwamatsu <hemamu@t-base.ne.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
With the new RTC class driver, we can get rid of most of the
old left over cruft.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This adds support for the SHMIN SH7706 board.
Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This adds support for the aforementioned CPU subtypes, and cleans
up some build issues encountered as a result.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This adds some simple setup code for most of the CPU subtypes,
primarily simple platform device registration.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Simple sem2mutex conversion.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This implements support for ppoll() and pselect6()..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
A few more outstanding nommu fixups..
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This implements support for __NR_restart_syscall.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This fixes up some of the various outstanding nommu bugs on
SH.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
nommu needs to be able to shift PAGE_OFFSET, so we switch it to a
non-user-visible CONFIG_PAGE_OFFSET and use that in the few places
where it matters.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Other boards require this as well, so move it out of the
rts7751r2d directory.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This implements initial math-emu support, aimed primarily at SH-3.
Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
We have a clash with RTC_CLASS over these names, so we
change them..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Drop TIF_USERSPACE and add addr_limit to the thread_info struct.
Subsequently, use that for address checking in strnlen_user() to
ward off bogus -EFAULTs.
Make __strnlen_user() return 0 on exception, rather than -EFAULT.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Nothing exciting here, just trivial fixes..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
If a channel is not TEI capable, don't try to request_irq()..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This fixes a long-standing FIXME for G2 DMA, where we finally
wire up the IRQ handler and allow for sampling remaining bytes
while in-flight.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This adds the VoyagerGX UART to the RTS7751R2D setup
code, and cleans up a few build issues.
Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Inhibit mapping through page tables in __ioremap() for PCI memory
apertures on SH7751 and SH7780-style PCI controllers, translation is
not possible for these areas. For other users that map a small window
in P1/P2 space, ioremap() traps that already, and should never make
it to __ioremap().
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This cleans up quite a lot of the PCI mess that we
currently have, and attempts to consolidate the
duplication in the SH7780 and SH7751 PCI controllers.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Some kgdb cleanup. Move hexchars/highhex/lowhex to the header, so it can
be reused by sh-sci. Also drop silly ctrl_inl/outl() overloading being
done by the kgdb stub.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
We had our own version, which serves no purpose. Simply
hook SH in to the generic one.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This adds some simple PM stubs and the basic APM interfaces,
primarily for use by hp6xx, where the existing userland
expects it.
Signed-off-by: Andriy Skulysh <askulysh@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
SE73180 can use the generic support, we just need to
wire up the IRQ demuxing.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Some of the paths were a bit broken, fix it up.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
No longer needed..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
This adds support for the Renesas SH7780 development boards,
R7780RP and R7780MP.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
|
Rewrite the store queue API for a per-cpu interface in the driver
model. The old miscdevice is dropped, due to TASK_SIZE limitations,
and no one was using it anyways.
Carve up and allocate store queue space with a bitmap, back sq
mapping objects with a slab cache, and let userspace worry about
its own prefetching.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
|
