Commit graph

36057 commits

Author SHA1 Message Date
Yoshinori Sato
e96636ccfa sh: Various nommu fixes.
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>
2006-09-27 17:21:02 +09:00
Paul Mundt
e7f93a355c sh: Make PAGE_OFFSET configurable.
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>
2006-09-27 17:19:13 +09:00
Paul Mundt
adf1890b0c sh: Move voyagergx_reg.h to a more sensible place.
Other boards require this as well, so move it out of the
rts7751r2d directory.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:17:27 +09:00
Takashi YOSHII
4b565680d1 sh: math-emu support
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>
2006-09-27 17:15:32 +09:00
Paul Mundt
317a6104a9 rtc: New RTC driver for SuperH On-Chip RTC.
This replaces the old SH RTC driver, and allows us to
clean quite a lot of things up on the board-specific
side.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:13:19 +09:00
Paul Mundt
af514ca7d2 sh: Rename rtc_get/set_time() to avoid RTC_CLASS conflict.
We have a clash with RTC_CLASS over these names, so we
change them..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:11:32 +09:00
Paul Mundt
2991be7252 sh: Fixup __strnlen_user() behaviour.
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>
2006-09-27 17:07:07 +09:00
Paul Mundt
0f08f33808 sh: More cosmetic cleanups and trivial fixes.
Nothing exciting here, just trivial fixes..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:03:56 +09:00
Paul Mundt
9e3043c091 sh: Fixup TEI IRQ requests in request_dma().
If a channel is not TEI capable, don't try to request_irq()..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:55:24 +09:00
Paul Mundt
e2d1864da5 sh: G2 DMA IRQ and residue sampling.
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>
2006-09-27 16:53:40 +09:00
Paul Mundt
ade2b3f6ed sh: VoyagerGX cleanups and 8250 UART support.
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>
2006-09-27 16:48:46 +09:00
Paul Mundt
a3e61d50dc sh: Inhibit mapping PCI apertures through page tables.
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>
2006-09-27 16:45:22 +09:00
Paul Mundt
959f85f8a3 sh: Consolidated SH7751/SH7780 PCI support.
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>
2006-09-27 16:43:28 +09:00
Paul Mundt
e108b2ca23 serial: Rework sh-sci for driver model.
sh-sci was turning in to an unmaintainable mess, especially with
regards to the port list. This cleans it up quite a bit, and
switches over to a platform device model where subtypes will
register their port list individually in their setup code.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:32:13 +09:00
Paul Mundt
56e8d7b578 sh: kgdb stub cleanups.
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>
2006-09-27 16:24:55 +09:00
Paul Mundt
2549b3222f sh: Use generic CONFIG_FRAME_POINTER.
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>
2006-09-27 16:22:33 +09:00
Andriy Skulysh
3aa770e797 sh: APM/PM support.
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>
2006-09-27 16:20:22 +09:00
Paul Mundt
ef48e8e349 sh: Free up some and document PTEL flags.
Drop _PAGE_SHARED/_PAGE_U0_SHARED and document Linux PTE encodings in
the PTEL value. Preserve the swap cache entry encoding semantics for
now, though it will need rework to free up _PAGE_WT from _PAGE_FILE.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:17:17 +09:00
Paul Mundt
801e045860 sh: Update new-machine.txt so it's more accurate.
This fell behind a bit, get it updated so the documentation
has something in common with reality.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:15:48 +09:00
Paul Mundt
a328ff9a7e sh: SE73180 updates for IRQ changes.
SE73180 can use the generic support, we just need to
wire up the IRQ demuxing.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:14:54 +09:00
Andriy Skulysh
848dd26594 video: Update header location in hp680_bl.
Trivial build fix.

Signed-off-by: Andriy Skulysh <askulysh@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:09:59 +09:00
Paul Mundt
ae31825e63 sh: Make O= builds work again.
Some of the paths were a bit broken, fix it up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:08:24 +09:00
Paul Mundt
00b3aa3fc9 sh: xchg()/__xchg() always_inline fixes for gcc4.
Make __xchg() a macro, so that gcc 4.0 doesn't blow up thanks to
always_inline..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:05:56 +09:00
Paul Mundt
bc8bff63ba sh: Drop incdir rule for SE7751.
No longer needed..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:04:51 +09:00
Paul Mundt
d2b06a8b17 video: Update pvr2fb for sq API changes.
With the store queue API rework, we need to change the in-kernel
users too.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:03:25 +09:00
Paul Mundt
f151749440 sh: Cleanup and document register bank usage.
Initial register bank cleanup. Make SR.RB configurable, and add some
preliminary documentation on register bank usage within the kernel.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:01:12 +09:00
Paul Mundt
5283ecb5cc sh: Add support for R7780RP and R7780MP boards.
This adds support for the Renesas SH7780 development boards,
R7780RP and R7780MP.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:59:17 +09:00
Paul Mundt
d7c30c682a sh: Store Queue API rework.
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>
2006-09-27 15:49:57 +09:00
Paul Mundt
373e68b547 sh: Board updates for I/O routine rework.
This updates the various boards for some of the recent I/O routine
updates.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:41:24 +09:00
Paul Mundt
f647d33f87 sh: Fix split ptlock for user mappings in __do_page_fault().
There was a bug that got introduced when the split ptlock changes
went in where mm could be unintialized for user mappings, this
fixes it up..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:30:24 +09:00
Paul Mundt
c470662854 sh: Fixup SHMLBA definition for SH7705.
We need this set to something sensible anywhere were we have
an aliasing dcache..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:29:18 +09:00
Paul Mundt
d7cdc9e8ac sh: ioremap() overhaul.
ioremap() overhaul. Add support for transparent PMB mapping, get rid of
p3_ioremap(), etc. Also drop ioremap() and iounmap() routines from the
machvec, as everyone can use the generic ioremap() API instead. For PCI
memory apertures and other special cases, use the pci_iomap() API, as
boards are already required to get the mapping right there.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:16:42 +09:00
Paul Mundt
26ff6c11ef sh: page table alloc cleanups and page fault optimizations.
Cleanup of page table allocators, using generic folded PMD and PUD
helpers. TLB flushing operations are moved to a more sensible spot.

The page fault handler is also optimized slightly, we no longer waste
cycles on IRQ disabling for flushing of the page from the ITLB, since
we're already under CLI protection by the initial exception handler.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:13:36 +09:00
Paul Mundt
9359e75770 sh: export clear_user_page() for the modules that need it.
Some modules seem to need this, so we export it..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:09:48 +09:00
Paul Mundt
0c7b1df69c sh: SH-4A Privileged Space Mapping Buffer (PMB) support.
Add support for 32-bit physical addressing through the SH-4A
Privileged Space Mapping Buffer (PMB).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:08:07 +09:00
Jamie Lenehan
a09749dd86 sh: Titan board support.
Add support for the titan board.

Signed-off-by: Jamie Lenehan <lenehan@twibble.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:05:39 +09:00
Paul Mundt
b7e108ee63 sh: BSS init bugfix and barrier in entry point.
A synco is needed before we jump to start_kernel().

While we're at it, also move the sh_cpu_init() jump until after
we've zeroed BSS, as this has caused some undesirable results
in sh_cpu_init().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:00:04 +09:00
Paul Mundt
298476220d sh: Add control register barriers.
Currently when making changes to control registers, we
typically need some time for changes to take effect (8
nops, generally).  However, for sh4a we simply need to
do an icbi..

This is a simple patch for implementing a general purpose
ctrl_barrier() which functions as a control register write
barrier. There's some additional documentation in the patch
itself, but it's pretty self explanatory.

There were also some places where we were not doing the
barrier, which didn't seem to have any adverse effects on
legacy parts, but certainly did on sh4a. It's safer to have
the barrier in place for legacy parts as well in these cases,
though this does make flush_tlb_all() more expensive (by an
order of 8 nops).  We can ifdef around the flush_tlb_all()
case for now if it's clear that all legacy parts won't have
a problem with this.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:57:44 +09:00
Paul Mundt
749cf48692 sh: Add flag for MMU PTEA capability.
Add CPU_HAS_PTEA, refactor some of the cpu flag settings.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:55:41 +09:00
kogiidena
94c0fa520c sh: landisk board support.
This adds support for the I-O DATA Landisk.

Signed-off-by: kogiidena <kogiidena@eggplant.ddo.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:53:35 +09:00
Paul Mundt
634bf4f69b sh: Fix libata build.
Drop virt_to_bus() from sg_dma_address() so libata builds.
While we're at it, move sg_dma_address() and sg_dma_len()
from pci.h to scatterlist.h.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:48:09 +09:00
Ollie Wild
24ab54cb49 sh: Fix TCP payload csum bug in csum_partial_copy_generic().
There's a bug in the Hitachi SuperH csum_partial_copy_generic()
implementation.  If the supplied length is 1 (and several alignment
conditions are met), the function immediately branches to label 4.
However, the assembly at label 4 expects the length to be stored in
register r2.  Since this has not occurred, subsequent behavior is
undefined.

This can cause bad payload checksums in TCP connections.

I've fixed the problem by initializing register r2 prior to the branch
instruction.

Signed-off-by: Ollie Wild <aaw@rincewind.tv>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:46:24 +09:00
Paul Mundt
8b395265f8 sh: Fix fatal oops in copy_user_page() on sh4a (SH7780).
We had a pretty interesting oops happening, where copy_user_page()
was down()'ing p3map_sem[] with a bogus offset (particularly, an
offset that hadn't been initialized with sema_init(), due to the
mismatch between cpu_data->dcache.n_aliases and what was assumed
based off of the old CACHE_ALIAS value).

Luckily, spinlock debugging caught this for us, and so we drop
the old hardcoded CACHE_ALIAS for sh4 completely and rely on the
run-time probed cpu_data->dcache.alias_mask. This in turn gets
the p3map_sem[] index right, and everything works again.

While we're at it, also convert to 4-level page tables..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:38:02 +09:00
Paul Mundt
75c92acdd5 sh: Wire up new syscalls.
The syscall table has lagged behind a bit, wire up the new ones..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:36:44 +09:00
Alexey Dobriyan
ef9a1d4c0c sh: remove cpu_online() definition from <asm/smp.h>
It's defined in <linux/cpumask.h> and log is horribly flooded by
"redefined" messages.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:32:57 +09:00
Paul Mundt
5b19c9081f sh: Support for SH7770/SH7780 CPU subtypes.
Merge support for SH7770 and SH7780 SH-4A subtypes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:31:40 +09:00
Paul Mundt
555ef19630 sh: Add SH7750S/SH7091 rules for SH7750 oprofile driver.
Update oprofile build rules for additional subtypes,
particularly SH7750S/SH7091.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:30:11 +09:00
Paul Mundt
a80fd21e52 sh: earlyprintk= support and cleanups.
Allow multiple early printk consoles via earlyprintk=.

With this change earlyprintk is no longer enabled by default,
it must be specified on the kernel command line. Optionally
with ,keep to prevent unreg by tty_io.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:26:53 +09:00
Paul Mundt
e86d6b66f5 sh: prefetch()/prefetchw() support.
SH-2/3/4 are able to prefetch, add support for it..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:20:54 +09:00
Toshinobu Sugioka
e7be853df7 sh: Fix a sign extension bug in memset().
Minor sign-extension bug in SH-specific memset()..

Signed-off-by: Toshinobu Sugioka <sugioka@itonet.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:13:14 +09:00