Commit Graph

2359 Commits

Author SHA1 Message Date
Magnus Damm
309214af53 sh: rework SuperH Mobile sleep code exception handling
This patch updates the exception handling in the sleep code
for SuperH Mobile. With the patch applied the sleep code
always rewrites the VBR and resumes from the exception vector,
re-initializes hardware and jumps straight to the original
interrupt vector.

Tested on sh7722 and sh7724 with "Sleep Mode", "Sleep Mode + SF"
and "Software Standby Mode + SF" with CONFIG_SUSPEND.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-18 10:17:29 +09:00
Paul Mundt
97f361e249 sh: unwinder: Move initialization to early_initcall() and tidy up locking.
This moves the initialization over to an early_initcall(). This fixes up
some lockdep interaction issues. At the same time, kill off some
superfluous locking in the init path.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-17 05:07:38 +09:00
Matt Fleming
cd7246f0e2 sh: Add support for DWARF GNU extensions
Also, remove the "fix" to DW_CFA_def_cfa_register where we reset the
frame's cfa_offset to 0. This action is incorrect when handling
DW_CFA_def_cfa_register as the DWARF spec specifically states that the
previous contents of cfa_offset should be used with the new
register. The reason that I thought cfa_offset should be reset to 0 was
because it was being assigned a bogus value prior to executing the
DW_CFA_def_cfa_register op. It turns out that the bogus cfa_offset value
came from interpreting .cfi_escape pseudo-ops (those used by the GNU
extensions) as CFA_DW_def_cfa ops.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
2009-08-16 12:48:53 +01:00
Matt Fleming
b955873bf5 sh: Try again at getting the initial return address for an unwind
The previous hack for calculating the return address for the first frame
we unwind (dwarf_unwinder_dump) didn't always work. The problem was that
it assumed once it read the rule for calculating the return address,
there would be no new rules for calculating it. This isn't true because
the way in which the CFA is calculated can change as you progress
through a function and the return address is figured out using the
CFA. Therefore, the way to calculate the return address can change.

So, instead of using some offset from the beginning of
dwarf_unwind_stack which is just a flakey approach, and instead of
executing instructions from the FDE until the return address is setup,
we now figure out the pc in dwarf_unwind_stack() just before we call
dwarf_cfa_execute_insns().

Signed-off-by: Matt Fleming <matt@console-pimps.org>
2009-08-16 12:48:53 +01:00
Paul Mundt
1b3edd9745 sh: Merge the _32/_64 variants of arch/sh/mm/Makefile.
Now that there is sufficient shared infrastructure, merge the Makefiles.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-16 03:49:21 +09:00
Paul Mundt
38f9ddf441 sh: Merge the _32/_64 variants of arch/sh/kernel/Makefile.
This uses the BITS export as per x86 in order to allow the same Makefile
to be used.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-16 03:35:26 +09:00
Paul Mundt
2b4315185a sh: Wire up sh5_cache_init().
Now that the SH-5 code is more or less behaving with the new cacheflush
interface, wire up the initialization code.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-16 02:16:44 +09:00
Paul Mundt
8c41cdcaff sh64: Kill off dead i/d-cache disabled bits.
These will be handled through the shared cache interface instead, and
they are presently undefined anyways.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-16 02:15:50 +09:00
Paul Mundt
94ecd224c9 sh: Fix up the SH-5 build with caches enabled.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-16 01:50:17 +09:00
Paul Mundt
1ee4ab09f3 sh64: Build in support for generic stacktrace ops.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-16 00:55:38 +09:00
Paul Mundt
65305ae816 sh: Convert cache disabled SH-5 over to new cache interface.
The caches enabled case needs more work, but is presently broken
regardless, so this can be done incrementally.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-16 00:53:56 +09:00
Martin Schwidefsky
d4f587c67f timekeeping: Increase granularity of read_persistent_clock()
The persistent clock of some architectures (e.g. s390) have a
better granularity than seconds. To reduce the delta between the
host clock and the guest clock in a virtualized system change the 
read_persistent_clock function to return a struct timespec.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Daniel Walker <dwalker@fifo99.com>
LKML-Reference: <20090814134811.013873340@de.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-08-15 10:55:46 +02:00
Paul Mundt
eccee7457d sh: Kill off the unhandled pvr case in SH-4 CPU probing.
This is superfluous, as the default CPU type and family are already
established by the initial cpuinfo definition. Given that we are still
able to probe for the CPU family even if we are not able to detect the
subtype, it's preferable to let the probing code fill out what it can and
leave the rest.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 13:15:02 +09:00
Magnus Damm
963e04cafb sh: Runtime PM pdev hwblk - kfr2r09 LCDC
This patch simply adds LCDC hwblk_id data for the kfr2r09 board.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 13:00:31 +09:00
Paul Mundt
4b6b987969 Merge branch 'master' into sh/hwblk 2009-08-15 13:00:02 +09:00
Paul Mundt
60e0a4c7ad Merge branch 'sh/stable-updates' 2009-08-15 12:59:42 +09:00
Magnus Damm
237674e050 sh: sh7724 ddr self-refresh changes
This patch updates the SuperH Mobile sleep assembly code with
support for DBSC memory controller found in the sh7724 processor.

Without this fix the memory hooked up to the sh7724 processor
will never enter self-refresh mode before suspending to ram. The
effect of this is that the memory contents most likeley will be
lost upon resume which may or may not be what you want.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 12:58:50 +09:00
Magnus Damm
9747e78b30 sh: use in-soc KEYSC on se7724
This patch updates the Solution Engine 7724 board code to use
in-SoC KEYSC resources for the keyboard platform device. Using
the in-SoC key scan controller fixes a crash-during-resume issue.

Without this patch the KEYSC hardware block located in the board
specific FPGA is used together with an external IRQ which is
routed through the FPGA and handled by some board specific demux
code. This board specific FPGA interrupt code does not implement
desc->set_wake() so the enable_irq_wake() call in the sh_keysc
driver will fail at suspend-to-ram time and the disable_irq_wake()
will bomb out when resuming.

Changing the platform data to use the in-SoC KEYSC hardware makes
the se7724 board support code less special which is a good thing.
Also, the board specific KEYSC pin setup code selects in-SoC pin
functions already which makes the current FPGA platform device data
look like a typo.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 12:58:47 +09:00
Paul Mundt
0d051d90bb sh: Convert SH7705 extended mode to new cacheflush interface.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 12:53:39 +09:00
Paul Mundt
79f1c9da5e sh: Convert SH-3 to new cacheflush interface.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 12:42:55 +09:00
Paul Mundt
a58e1a2ab4 sh: Convert SH-2A to new cacheflush interface.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 12:38:29 +09:00
Paul Mundt
109b44a82a sh: Convert SH-2 to new cacheflush interface.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 12:35:15 +09:00
Paul Mundt
37443ef3f0 sh: Migrate SH-4 cacheflush ops to function pointers.
This paves the way for allowing individual CPUs to overload the
individual flushing routines that they care about without having to
depend on weak aliases. SH-4 is converted over initially, as it wires
up pretty much everything. The majority of the other CPUs will simply use
the default no-op implementation with their own region flushers wired up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 12:29:49 +09:00
Paul Mundt
916e97834e sh: Kill off unused flush_icache_user_range().
We use flush_cache_page() outright in copy_to_user_page(), and nothing
else needs it, so just kill it off. SH-5 still defines its own version,
but that too will go away in the same fashion once it converts over.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 11:38:05 +09:00
Paul Mundt
7fbb2d3bdd sh: consolidate flush_dcache_mmap_lock/unlock() definitions.
All of the flush_dcache_mmap_lock()/flush_dcache_mmap_unlock()
definitions are identical across all CPUs, so just provide them
generically in asm/cacheflush.h.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 11:25:32 +09:00
Paul Mundt
0b445dcaf3 sh: Don't export flush_dcache_all().
flush_dcache_all() is used internally by the SH-4 cache code, it is not
part of the exported cache API, so make it static and don't export it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 11:22:50 +09:00
Paul Mundt
27d59ec170 sh: Move alias computation to shared cache init.
This migrates the alias computation and printing of probed cache
parameters from the SH-4 code to the shared cpu_cache_init().

This permits other platforms with aliases to make use of the same
probe logic without having to roll their own, and also produces
consistent output regardless of platform.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 11:11:16 +09:00
Paul Mundt
ecba106058 sh: Centralize the CPU cache initialization routines.
This provides a central point for CPU cache initialization routines.
This replaces the antiquated p3_cache_init() method, which the vast
majority of CPUs never cared about.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 11:05:42 +09:00
Paul Mundt
e82da214d2 sh: Track the CPU family in sh_cpuinfo.
This adds a family member to struct sh_cpuinfo, which allows us to fall
back more on the probe routines to work out what sort of subtype we are
running on. This will be used by the CPU cache initialization code in
order to first do family-level initialization, followed by subtype-level
optimizations.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 10:48:13 +09:00
Paul Mundt
aae4d1428c sh: consolidate nommu stubs in arch/sh/mm/nommu.c.
These were previous littered around tlb-nommu.c and pg-nommu.c, though at
this point there are more stubs than are strictly TLB or page op related,
so just consolidate them in a single nommu.c.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 09:57:57 +09:00
Paul Mundt
dde5e3ffb7 sh: rework nommu for generic cache.c use.
This does a bit of reorganizing for allowing nommu to use the new
and generic cache.c, no functional changes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 09:49:32 +09:00
Paul Mundt
cbbe2f68f6 sh: rename pg-mmu.c -> cache.c, enable generically.
This builds in the newly created cache.c (renamed from pg-mmu.c) for both
MMU and NOMMU configurations. The kmap_coherent() stubs and alias
information recorded by each CPU family takes care of doing the right
thing while enabling the code to be commonly shared.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 09:30:39 +09:00
Paul Mundt
2739742c24 sh: Provide the kmap_coherent() interface generically.
This plugs in kmap_coherent() for the non-SH4 cases to permit the
pg-mmu.c bits to be used generically across all CPUs. SH-5 is still in
the TODO state, but will move over to fixmap and the generic interface
gradually.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 09:19:19 +09:00
Paul Mundt
8edcfcbbd1 sh: Bail from kmap_coherent_init() if we have no dcache aliases.
This kills off the ifdef from kmap_coherent_init() and just bails if
there are no cache aliases. This permits the kmap coherent code to be
used on other CPUs.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 09:03:59 +09:00
Matt Fleming
180aa6e6aa sh: Set the cfa_offset to 0 if we see a DW_CFA_def_cfa_register op
The way that the CFA is calculated can change as we progress through a
function. If we see a DW_CFA_def_cfa_register op we need to reset the
frame's cfa_offset value which may have been previously setup.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 08:07:43 +09:00
Paul Mundt
7dd6662a92 sh: delay slot future proofing via EXPMASK on SH-4A parts.
This implements EXPMASK initialization code for SH-4A parts, where it is
possible to disable compat features that will go away in newer cores.
Presently this includes disabling support for non-nop instructions in the
rte delay slot, as well as a sleep instruction being placed in a delay
slot (neither of which the kernel does any longer). As a result of this,
any future offenders will have illegal slot exceptions generated for
them.

Associative writes for the memory-mapped cache array are still left
enabled, until such a point that special cache operations for SH-4A are
provided to move off of the current (and rather dated) SH-4 versions.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 07:43:21 +09:00
Paul Mundt
7a90e00dda sh: Make sure rte delay slots are nopped out on all parts.
Future SH parts do not support any instruction but a nop in the rte delay
slot, so make the change for all offending parts. SH-5 is excluded from
this, and already has its own set of restrictions with regards to rte
delay slot handling.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 07:41:45 +09:00
Paul Mundt
d2dcd9101b Merge branch 'master' into sh/cachetlb 2009-08-15 05:58:45 +09:00
Paul Mundt
8010fbe7a6 sh: TLB fast path optimizations for load/store exceptions.
This only bothers with the TLB entry flush in the case of the initial
page write exception, as it is unecessary in the case of the load/store
exceptions.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 03:06:41 +09:00
Paul Mundt
112e58471d sh: TLB protection violation exception optimizations.
This adds a bit of rework to have the TLB protection violations skip the
TLB miss fastpath and go directly in to do_page_fault(), as these require
slow path handling.

Based on an earlier patch by SUGIOKA Toshinobu.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 02:49:40 +09:00
Paul Mundt
e7b8b7f16e sh: NO_CONTEXT ASID optimizations for SH-4 cache flush.
This optimizes for the cases when a CPU does not yet have a valid ASID
context associated with it, as in this case there is no work for any of
flush_cache_mm()/flush_cache_page()/flush_cache_range() to do. Based on
the the MIPS implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 02:21:16 +09:00
Paul Mundt
795687265d sh64: Wire up the shared __flush_xxx_region() flushers.
Now with all of the prep work out of the way, kill off the SH-5 variants
and use the SH-4 version directly. This also takes advantage of the
unrolling that was previously done for the new version.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 02:00:54 +09:00
Paul Mundt
43bc61d86f sh: Add register alignment helpers for shared flushers.
This plugs in some register alignment helpers for the shared flushers,
allowing them to also be used on SH-5. The main rationale here is that
in the SH-5 case we have a variable ABI, where the pointer size may not
equal the register width. This register extension is taken care of by
the SH-5 code already today, and is otherwise unused on the SH-4 code.
This combines the two and allows us to kill off the SH-5 implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 01:57:36 +09:00
Paul Mundt
606b4c992f sh: stacktrace: Properly terminate the trace entry buffer.
This inserts a ULONG_MAX entry at the end of the valid entries in the
stack trace buffer so the default code doesn't need to scan to the end of
available slots. This also makes the trace buffer termination behaviour
consistent with the other architectures.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 01:11:37 +09:00
Paul Mundt
f9967e23c1 sh: flag the default unwinder as reliable.
This flags the default unwinder as reliable, as it tends to be reliable
enough for the purposes of the stacktrace buffer. We leave the unreliable
cases for the unwind methods that we know to be completely broken.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 01:09:03 +09:00
Paul Mundt
48e4d4604b sh: stacktrace: Add reliability checks in address saving ops.
This adopts the reliability checks from the x86 stacktrace code so known
bad addresses are not recorded in the stack trace buffer.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 01:05:46 +09:00
Paul Mundt
0fc11e3618 sh: unwinder: Convert frame allocations to GFP_ATOMIC.
save_stack_trace_tsk() and friends can be called from atomic context (as
triggered by latencytop), and subsequently hit two problematic allocation
points that were using GFP_KERNEL (these were dwarf_unwind_stack() and
dwarf_frame_alloc_regs()). Convert these over to GFP_ATOMIC and get
latencytop working with the DWARF unwinder.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-14 23:58:37 +09:00
Tejun Heo
384be2b18a Merge branch 'percpu-for-linus' into percpu-for-next
Conflicts:
	arch/sparc/kernel/smp_64.c
	arch/x86/kernel/cpu/perf_counter.c
	arch/x86/kernel/setup_percpu.c
	drivers/cpufreq/cpufreq_ondemand.c
	mm/percpu.c

Conflicts in core and arch percpu codes are mostly from commit
ed78e1e078dd44249f88b1dd8c76dafb39567161 which substituted many
num_possible_cpus() with nr_cpu_ids.  As for-next branch has moved all
the first chunk allocators into mm/percpu.c, the changes are moved
from arch code to mm/percpu.c.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-08-14 14:45:31 +09:00
Paul Mundt
718dbf376a Merge branch 'sh/dwarf-unwinder' 2009-08-14 05:10:57 +09:00
Matt Fleming
f826466772 sh: Delete DWARF_ARCH_UNWIND_OFFSET
Trying to figure out the best value for DWARF_ARCH_UNWIND_OFFSET is
tricky at best. Various things can change the size (and offset from the
beginning of the function) of the prologue. Notably, turning on ftrace
adds calls to mcount at the beginning of functions, thereby pushing the
prologue further into the function.

So replace DWARF_ARCH_UNWIND_OFFSET with some code that continues to
execute CFA instructions until the value of return address register is
defined. This is safe to do because we know that the return address must
have been pushed onto the frame before our first function call; we just
can't figure out where at compile-time.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-14 05:00:21 +09:00
Paul Mundt
f54aab4a74 sh: oprofile: Kill off dead valid_kernel_stack().
This is no longer used, kill it off.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-14 04:59:50 +09:00
Paul Mundt
bf43a160ff sh: unwinder: Restore put_unaligned() for an unaligned destination.
The destination address might be unaligned, so set it with
put_unaligned() for safety. This restores the previous behaviour, albeit
through the proper API.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-14 03:06:13 +09:00
Paul Mundt
3497447f15 sh: unwinder: Fix up usage of unaligned accessors.
This was using internal symbols for unaligned accesses, bypassing the
exposed interface for variable sized safe accesses. This converts all of
the __get_unaligned_cpuXX() users over to get_unaligned() directly,
relying on the cast to select the proper internal routine.

Additionally, the __put_unaligned_cpuXX() case is superfluous given that
the destination address is aligned in all of the current cases, so just
drop that outright.

Furthermore, this switches to the asm/unaligned.h header instead of the
asm-generic version, which was silently bypassing the SH-4A optimized
unaligned ops.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-14 02:10:59 +09:00
Matt Fleming
cafb0ddac6 sh: Add CFI annotations for exception return.
Annotate various assembly code paths with CFI assembler directives so
that DWARF unwind info is available for the unwinder.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-14 02:02:07 +09:00
Matt Fleming
0b930489b8 sh: Setup the frame register in asm code
In order to use DWARF unwinder info the frame register has to contain a
valid value. Whilst GCC takes care of this for C code, we have to do it
ourselves for assembly.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-14 01:59:55 +09:00
Matt Fleming
bd353861c7 sh: dwarf unwinder support.
This is a first cut at a generic DWARF unwinder for the kernel. It's
still lacking DWARF64 support and the DWARF expression support hasn't
been tested very well but it is generating proper stacktraces on SH for
WARN_ON() and NULL dereferences.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-14 01:58:43 +09:00
Matt Fleming
0eff9f66de sh: Use the new stack unwinder API
Instead of implementing our own stack unwinder via dump_trace() we
should use the new stack unwinder API because it is more modular. This
change allows us to decouple the interface for generating stacktraces
from the implementation of a stack unwinder.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-13 19:52:53 +09:00
Matt Fleming
bf61ad1f87 sh: Allow multiple stack unwinders to be setup
Provide an interface for registering stack unwinders, where each
unwinder is given a rating that describes its accuracy and
complexity. The more accurate an unwinder is, the more complex it is.

If a the current stack unwinder faults, then the stack unwinder with the
next highest accuracy will be used in its place (provided one is
available). For example, this allows unwinders, such as the DWARF
unwinder, to liberally sprinkle BUG()s to catch badly formed DWARF debug
info.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-13 19:49:03 +09:00
Matt Fleming
4e14dfc722 sh: Use the generalized stacktrace ops
Copy the stacktrace ops code from x86 and provide a central function for
use by functions that need to dump a callstack.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-13 11:50:08 +09:00
Marcin Slusarz
922b0dc59b sh: use printk_once
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-13 11:48:08 +09:00
Paul Mundt
e290861f99 Merge branch 'sh/stable-updates' 2009-08-13 11:48:01 +09:00
Magnus Damm
dbefd606a3 sh: fix i2c init order on ap325rxa V2
Convert the AP325RXA board code to register devices at
arch_initcall() time instead of device_initcall(). This
fix unbreaks pcf8563 RTC driver support.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-13 11:43:43 +09:00
Magnus Damm
ba3a170191 sh: fix i2c init order on Migo-R V2
Convert the Migo-R board code to register devices at
arch_initcall() time instead of __initcall(). This fix
unbreaks migor_ts touch screen driver support.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-13 11:39:02 +09:00
Magnus Damm
ba9a633787 sh: convert processor device setup functions to arch_initcall()
Convert the processor platform device setup
functions from __initcall() and sometimes
device_initcall() to arch_initcall().

This makes sure that the platform devices are
registered a bit earlier so the devices are
available when drivers register using initcall
levels earlier than device_initcall().

A good example is platform devices needed by
i2c-sh_mobile.c which registers a bit earlier
using subsys_initcall().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-13 11:36:33 +09:00
Magnus Damm
b4a757367d sh: clean up Migo-R header file
This patch moves the Migo-R specific header file from
mach-common/ into mach-migor/ and removes unused cruft.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-07 03:59:24 +09:00
Magnus Damm
2d2bcd319a sh: fix romImage mach dir usage
This patch moves all the romImage related header files into
the mach/ directory.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-07 03:58:38 +09:00
Magnus Damm
7766e16bee sh: LED9, LED10 and LED11 support for Solution Engine 7724
This patch adds support for LED9, LED10 and LED11 on
the Solution Engine 7724 board. If CONFIG_PM is enabled
then these LEDs are used to show the hardware sleep
mode used by the processor. Useful to debug cpuidle.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-07 03:55:38 +09:00
Magnus Damm
33893d7aa0 sh: kfr2r09 board support - NAND flash
This patch adds support for the NAND flash chip
attached to CS4 on the KFR2R09 board. The device is
driven by the platform device driver "onenand-flash".

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-07 03:55:32 +09:00
Magnus Damm
9f26e659d8 sh: kfr2r09 board support - LCDC panel
This patch adds support for the WQVGA LCD display used by
the KFR2R09 board. The LCD module is a TX07D34VM0AAA made
by Hitachi, and this module is made up by a R61517 chip
together with a 240x400 pixel display. The screen is
attached to the SuperH Mobile LCDC using a 18-bit SYS bus.

The register settings used by the SYS panel setup code are
based on an out-of-tree driver which apart from duplicating
all LCDC driver code and writing to non-existing hardware
registers also never was posted for upstream merge.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-07 03:55:29 +09:00
Christoph Hellwig
c1155e3499 sh: convert to asm-generic/hardirq.h
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-05 17:56:07 +09:00
Paul Mundt
0837f52463 sh: Partially unroll the SH-4 __flush_xxx_region() flushers.
This does a bit of unrolling for the SH-4 region flushers.

Based on an earlier patch by SUGIOKA Toshinobu.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 18:09:54 +09:00
Paul Mundt
8174252752 sh: Split out SH-4 __flush_xxx_region() ops.
This splits out the SH-4 __flush_xxx_region() functions and defines them
as weak symbols. This allows us to provide optimized versions without
having to ifdef cache-sh4.c to death.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 18:06:01 +09:00
Paul Mundt
d14d751ff9 sh64: Kill off special clear_page() implementation.
This can use the now generic clear_page() implementation, which is backed
by the sh64 optimized memset routine. This also fixes up the case where
PAGE_SIZE != 4kB.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 17:17:00 +09:00
Paul Mundt
c7914834ef sh: Tidy up NEFF-based sign extension for SH-5.
This consolidates all of the NEFF-based sign extension for SH-5.
In the future the other SH code will need to make use of this as well,
so make it generic in preparation for more 32/64 consolidation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 17:14:39 +09:00
Paul Mundt
c0fe478dbb sh: Provide __flush_anon_page().
This provides a __flush_anon_page() that handles both the aliasing and
non-aliasing cases. This fixes up some crashes with heavy
get_user_pages() users.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 16:02:43 +09:00
Paul Mundt
b5eb10ae90 sh: Drop unused arguments for kunmap_coherent().
kunmap_coherent() doesn't do anything with its arguments, so just kill
them off.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 16:00:36 +09:00
Paul Mundt
222db3e5f2 sh: Bring kmap_coherent() out-of-line.
kmap_coherent() has gotten too big to leave as an inline, so we
bring it out-of-line.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:59:15 +09:00
Paul Mundt
700487c158 sh: Add a PG_dcache_dirty sanity check in kmap_coherent().
This plugs in a BUG_ON() in kmap_coherent() for PG_dcache_dirty pages
to catch when things go horribly wrong. Copied from the MIPS
implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:57:44 +09:00
Paul Mundt
11d82905e0 sh: Fix up early printk build error.
Missing endif in the early printk case, fix it up..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:54:33 +09:00
Magnus Damm
df47cd096c sh: Runtime PM pdev hwblk - Solution Engine 7724
Add hwblk_id to Solution Engine 7724 board specific
on-chip sh7724 platform devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:06:13 +09:00
Magnus Damm
442c37534c sh: Runtime PM pdev hwblk - kfr2r09
Add hwblk_id to kfr2r09 board specific on-chip sh7724
platform devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:06:11 +09:00
Magnus Damm
593a0c898a sh: Runtime PM pdev hwblk - sh7724
Add hwblk_id to on-chip sh7724 platform devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:06:09 +09:00
Magnus Damm
d3a6f6260a sh: Runtime PM pdev hwblk - AP325RXA
Add hwblk_id to AP325RXA board specific on-chip sh7723
platform devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:06:06 +09:00
Magnus Damm
09d21f9c83 sh: Runtime PM pdev hwblk - sh7723
Add hwblk_id to on-chip sh7723 platform devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:06:01 +09:00
Magnus Damm
66d9c51ac4 sh: Runtime PM pdev hwblk - Solution Engine 7722
Add hwblk_id to Solution Engine 7722 board specific
on-chip sh7722 platform devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:05:58 +09:00
Magnus Damm
2de63cf376 sh: Runtime PM pdev hwblk - Migo-R
Add hwblk_id to Migo-R board specific on-chip sh7722
platform devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:05:56 +09:00
Magnus Damm
f69d578274 sh: Runtime PM pdev hwblk - sh7722
Add hwblk_id to on-chip sh7722 platform devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:05:53 +09:00
Magnus Damm
9aaa74908b sh: Runtime PM pdev hwblk
These patches extend struct platform device data for a bunch of
SuperH Mobile processors and embedded boards. The patches simply
add hardware block ids to on-chip platform devices. Platform
devices off chip (such as external ethernet controllers or flash
chips) are left out which gives them a special case hardware block
id of zero.

Upcoming Runtime PM code will make use of the hardware block id
to group devices together. The hardware block id can also be used
to extend the SuperH Mobile clock framework implementation.

This series of patches depend on the following:
"Driver Core: Add platform device arch data V3".

This patch adds a hwblk_id member to struct pdev_archdata. This member
should be used to point out on-chip hardware block id.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 15:05:50 +09:00
Paul Mundt
00111076f7 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 into sh/hwblk 2009-08-04 15:05:39 +09:00
Kuninori Morimoto
edc67b2942 sh: Add SH7724 DMAC support.
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 14:41:49 +09:00
Kuninori Morimoto
4f3243117a sh: ms7724se: add 1280x720 lcdc output support
There was no big meaning in the support of SVGA,
but 720p support is necessary for ms7724se board.
So, this patch support 720p instead of SVGA.

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 14:41:22 +09:00
Magnus Damm
133b170f08 sh: clean up MSTPCRn register definitions
This patch removes the unused MSTPCRn register definitions
from the SuperH Mobile code for sh7722, sh7723 and sh7724.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 14:40:58 +09:00
Magnus Damm
6ba4a8f0f5 sh: hwblk support for sh7724
This patch adds hwblk support for the sh7724 processor.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 14:40:55 +09:00
Rafael Ignacio Zurita
05aa788275 sh: Add early printk support for SH770x CPUs.
This adds early printk support for SH770x (tested on SH7709 based hp6xx).

Signed-off-by: Rafael Ignacio Zurita <rizurita@yahoo.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-04 14:38:08 +09:00
Paul Mundt
fdeb076f20 sh: Add romImage target to archhelp.
Adds an archhelp blurb for the romImage target so it is reflected in
'make help'.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-30 00:27:35 +09:00
Magnus Damm
d162300e6c sh: kfr2r09 romImage support V2
This patch is romImage support for the kfr2r09 board V2.

The partner-jet-setup.txt file is converted into assembly code
which becomes the first code to execute from the reset vector.

The file partner-jet-setup.txt can also be used to setup
the hardware using a JTAG debugger so booting from RAM can
be done without burning the code to flash.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-30 00:24:07 +09:00
Magnus Damm
3c928320b2 sh: romImage support V2
This patch contains support for the romImage build target V2.

The resulting romImage file should be burned to rom
or flash and could be used as small boot loader.

Board code should keep their setup code in the file
romimage.h located in their mach include directory.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-30 00:24:03 +09:00
Stuart Menefy
fd78a76aef sh: Rework irqflags tracing to fix up CONFIG_PROVE_LOCKING.
This cleans up the irqflags tracing code quite a bit and ties it
in to various missing callsites that caused an imbalance when
CONFIG_PROVE_LOCKING was enabled.

Previously this was catching on:

 987 #ifdef CONFIG_PROVE_LOCKING
 988     DEBUG_LOCKS_WARN_ON(!p->hardirqs_enabled);
 989     DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled);
 990 #endif
 991     retval = -EAGAIN;

with hardirqs being doubly enabled, and subsequently bailing out
with the following call trace:

	Call trace:
	[<88035224>] __lock_acquire+0x616/0x6a6
	[<88015a8c>] do_fork+0xf8/0x2b0
	[<880331ec>] trace_hardirqs_on_caller+0xd4/0x114
	[<88241074>] _spin_unlock_irq+0x20/0x64
	[<88035224>] __lock_acquire+0x616/0x6a6
	[<8800386c>] kernel_thread+0x48/0x70
	[<88024ecc>] ____call_usermodehelper+0x0/0x110
	[<88024ecc>] ____call_usermodehelper+0x0/0x110
	[<88003894>] kernel_thread_helper+0x0/0x14
	[<88024bac>] __call_usermodehelper+0x38/0x70
	[<88025dc0>] worker_thread+0x150/0x274
	[<88035b9c>] lock_release+0x0/0x198
	[<88024b74>] __call_usermodehelper+0x0/0x70
	[<88028cf0>] autoremove_wake_function+0x0/0x30
	[<88028bf2>] kthread+0x3e/0x70
	[<88025c70>] worker_thread+0x0/0x274
	[<8800389c>] kernel_thread_helper+0x8/0x14
	[<88028bb4>] kthread+0x0/0x70
	[<88003894>] kernel_thread_helper+0x0/0x14

Reported-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-29 23:01:24 +09:00
Paul Mundt
82b242214b Revert "sh: Bump the earlytimer bits back to time_init()."
This reverts commit 1d29ebebcb.

Bumping up the earlytimer initialization causes IRQs to be enabled too
early, which blows up lockdep:

...
NR_IRQS:256 nr_irqs:256
------------[ cut here ]------------
Badness at kernel/lockdep.c:2128

Pid : 0, Comm:          swapper
CPU : 0                 Not tainted  (2.6.31-rc3-00205-g3ed6e12-dirty #2443)

PC is at trace_hardirqs_on_caller+0x48/0x10c
PR is at trace_hardirqs_on_caller+0x3c/0x10c
...

Revert it back to late_time_init time, which fixes up lockdep.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-29 22:43:58 +09:00
Paul Mundt
3ed6e12939 sh: Handle a NULL vma in __update_tlb() for the fast-path.
The TLB miss fast-path presently calls in to update_mmu_cache() to
set up the entry, and does so with a NULL vma. Check for vma validity
in the __update_tlb() ptrace checks.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-29 22:06:58 +09:00
Paul Mundt
9cef749269 sh: update_mmu_cache() consolidation.
This splits out a separate __update_cache()/__update_tlb() for
update_mmu_cache() to wrap in to. This lets us share the common
__update_cache() bits while keeping special __update_tlb() handling
broken out.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-29 00:12:17 +09:00
Benjamin Herrenschmidt
4733fd328f mm: Remove duplicate definitions in MIPS and SH
Those definitions are already provided by asm-generic

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-27 17:26:44 -07:00
Benjamin Herrenschmidt
9e1b32caa5 mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()

Upcoming paches to support the new 64-bit "BookE" powerpc architecture
will need to have the virtual address corresponding to PTE page when
freeing it, due to the way the HW table walker works.

Basically, the TLB can be loaded with "large" pages that cover the whole
virtual space (well, sort-of, half of it actually) represented by a PTE
page, and which contain an "indirect" bit indicating that this TLB entry
RPN points to an array of PTEs from which the TLB can then create direct
entries. Thus, in order to invalidate those when PTE pages are deleted,
we need the virtual address to pass to tlbilx or tlbivax instructions.

The old trick of sticking it somewhere in the PTE page struct page sucks
too much, the address is almost readily available in all call sites and
almost everybody implemets these as macros, so we may as well add the
argument everywhere. I added it to the pmd and pud variants for consistency.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David Howells <dhowells@redhat.com> [MN10300 & FRV]
Acked-by: Nick Piggin <npiggin@suse.de>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-27 12:10:38 -07:00
Paul Mundt
0dfae7d5a2 sh: Use the now generic SH-4 clear/copy page ops for all MMU platforms.
Now that the SH-4 page clear/copy ops are generic, they can be used for
all platforms with CONFIG_MMU=y. SH-5 remains the odd one out, but it too
will gradually be converted over to using this interface.

SH-3 platforms which do not contain aliases will see no impact from this
change, while aliasing SH-3 platforms will get the same interface as
SH-4.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-27 21:30:17 +09:00
Paul Mundt
221c007b02 sh: Rename arch/sh/lib/clear_page.S -> __clear_user.S.
Now that this only contains the __clear_user() function, rename it
accordingly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-27 20:55:46 +09:00
Paul Mundt
dfff0fa65a sh: wire up clear_user_highpage() for sh4, convert sh7705.
This wires up clear_user_highpage() on SH-4 and subsequently converts the
SH7705 32kB cache mode over to using it. Now that the SH-4 implementation
handles all of the dcache purging directly in the aliasing case, there is
no need to do this in the default clear_page() implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-27 20:53:22 +09:00
Paul Mundt
a3beddd0aa Merge branch 'sh/kfr2r09' 2009-07-23 18:43:48 +09:00
Magnus Damm
5bdef865eb sh: kfr2r09 board support - mach-type and defconfig
This patch adds a defconfig and a mach-types entry for
the kfr2r09 board.

At this point only a few devices like SCIF, KEYSC and
NOR Flash are supported together with sh7724 devices
such as IIC0, IIC1 and the multimedia blocks exported
via UIO.

Kexec is supported, but booting from flash is not (yet).

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-23 18:43:16 +09:00
Magnus Damm
39a6bf1426 sh: kfr2r09 board support - KEYSC keypad
This patch adds KEYSC keypad support to the kfr2r09 board.

The keys driven by the sh7724 on-chip KEYSC block are
described as a platform device and platform data for
the sh_keysc driver.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-23 13:15:22 +09:00
Magnus Damm
a366aa64f3 sh: kfr2r09 board support - NOR flash
This patch adds NOR flash support to the kfr2r09 board.

NOR flash support is added by describing the NOR flash
chip hooked up to CS0 as platform device data for the
physmap-flash MTD driver.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-23 13:15:20 +09:00
Magnus Damm
e7d165146a sh: kfr2r09 board support - SCIF console
This patch adds basic kfr2r09 board support. Only
the SCIF1 console is supported with this patch, but
this patch and a proper sh7724 configuration is all
that is needed. Combine with an initramfs to have a
small RAM based kernel and distribution booted as
zImage from RAM via JTAG.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-23 13:15:18 +09:00
Magnus Damm
955c9863bb sh: convert processor device setup functions to arch_initcall()
Convert the processor platform device setup
functions from __initcall() and sometimes
device_initcall() to arch_initcall().

This makes sure that the platform devices are
registered a bit earlier so the devices are
available when drivers register using initcall
levels earlier than device_initcall().

A good example is platform devices needed by
i2c-sh_mobile.c which registers a bit earlier
using subsys_initcall().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-23 13:06:07 +09:00
Magnus Damm
2c59b0b70b usb: m66592-udc platform data on_chip support
Convert the m66592-udc driver to use the on_chip flag
from platform data to enable on chip behaviour instead
of relying on CONFIG_SUPERH_BUILT_IN_M66592 ugliness.

This makes the code cleaner and also allows us to support
both external and internal m66592 with the same kernel.

It also makes the Kconfig part more future proof since
we with this patch can add support for new processors
with on-chip m66592 without modifying the Kconfig.

The patch adds a m66592 header file for platform data
and ties in platform data to the existing m66592 devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-23 13:04:15 +09:00
Paul Mundt
2277ab4a1d sh: Migrate from PG_mapped to PG_dcache_dirty.
This inverts the delayed dcache flush a bit to be more in line with other
platforms. At the same time this also gives us the ability to do some
more optimizations and cleanup. Now that the update_mmu_cache() callsite
only tests for the bit, the implementation can gradually be split out and
made generic, rather than relying on special implementations for each of
the peculiar CPU types.

SH7705 in 32kB mode and SH-4 still need slightly different handling, but
this is something that can remain isolated in the varying page copy/clear
routines. On top of that, SH-X3 is dcache coherent, so there is no need
to bother with any of these tests in the PTEAEX version of
update_mmu_cache(), so we kill that off too.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-22 19:20:49 +09:00
Paul Mundt
c0b96cf639 sh: Provide _PAGE_SPECIAL for 32-bit.
Allocate one of the unused PTE bits for _PAGE_SPECIAL directly. This is
prep work for fast gup and the zero page revival.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-22 16:50:57 +09:00
Paul Mundt
fc6cca3917 Merge branches 'sh/compressors' and 'sh/stable-updates' 2009-07-21 17:37:18 +09:00
Paul Mundt
ef9b542fce sh: bzip2/lzma uImage support.
This builds on the bzip2/lzma zImage support change and wires it up for
uImages. Based on the blackfin implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-21 17:24:36 +09:00
Tim Abbott
6bde607e69 sh: Clean up linker script using new BSS_SECTION macro.
Updated to use the fixed BSS linker script macros from this
thread:

	http://www.spinics.net/lists/kernel/msg913238.html

Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-20 23:30:24 +09:00
Paul Mundt
c358fc46ef Merge branches 'sh/hwblk' and 'sh/platform-updates' 2009-07-20 04:28:11 +09:00
Magnus Damm
719a72b7c7 usb: r8a66597-hcd platform data on_chip support
Convert the r8a66597-hcd driver to use the on_chip flag
from platform data to enable on chip behaviour instead
of relying on CONFIG_SUPERH_ON_CHIP_R8A66597 ugliness.

This makes the code cleaner and also allows us to support
both external and internal r8a66597 with the same kernel.

It also makes the Kconfig part more future proof since
we with this patch can add support for new processors
with on-chip r8a66597 without modifying the Kconfig.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-20 04:27:10 +09:00
Magnus Damm
2094e504a7 sh: hwblk support for sh7723
This patch adds hwblk support for the sh7723 processor.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-20 04:23:44 +09:00
Magnus Damm
0f8ee1874f sh: Add support for multiple hwblk counters
Extend the SuperH hwblk code to support more than one counter.
Contains ground work for the future Runtime PM implementation.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-20 04:23:39 +09:00
Paul Mundt
72849873cd sh: Kill off zero-sized vmlinux_64.lds.S
This seems to be some merge damage, kill it off.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-14 06:51:54 -04:00
Matt Fleming
05dd2cd3bb sh: Restore previous behaviour on kernel fault
The last commit changed the behaviour on kernel faults when we were
doing something other than syncing the page tables. vmalloc_sync_one()
needs to return NULL if the page tables are up to date, because the
reason for the fault was not a missing/inconsitent page table entry. By
returning NULL if the page tables are sync'd we signal to the calling
function that further work must be done to resolve this fault.

Also, remove the superfluous __va() around the first argument to
vmalloc_sync_one(). The value of pgd_k is already a virtual address and
using it wth __va() causes a NULL dereference.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-13 17:43:22 -04:00
Alexey Dobriyan
405f55712d headers: smp_lock.h redux
* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
  It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT

  This will make hardirq.h inclusion cheaper for every PREEMPT=n config
  (which includes allmodconfig/allyesconfig, BTW)

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-12 12:22:34 -07:00
Paul Mundt
3e28ad7b24 Merge branches 'sh/compressors' and 'sh/ftrace' 2009-07-12 11:45:25 -04:00
Paul Mundt
040f43e0bf sh64: Don't use PHYSADDR() for output_addr calculation.
Opencode the MEMORY_START offset directly, sh64 uses a slightly different
calculation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 13:36:25 -04:00
Paul Mundt
59f002964f sh: rename arch/sh/boot/compressed/misc_32.c -> misc.c
This is now used by both sh64 and regular sh, kill off the old sh64
version now too.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 13:32:24 -04:00
Paul Mundt
b14c6d428a sh: Consolidate the sh64 changes in arch/sh/boot/compressed/misc_32.c
This makes some minor changes to misc_32.c so that it can be used by
sh64.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 13:30:38 -04:00
Paul Mundt
07e88e1bfc sh: bzip2/lzma zImage support.
This plugs in bzip2 and lzma support for zImages.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 13:21:19 -04:00
Paul Mundt
df8ce2595f sh: Tidy up gzip-based zImage decompression.
This brings the zImage handling in to the current century, in preparation
for handling the other compression types.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-12 01:37:30 +09:00
Paul Mundt
e460ab27b6 sh: Fix up stack overflow check with ftrace disabled.
Presently the STACK_CHECK() code is called in to multiple times, although
it's only necessary from the mcount entry. The code still attempts to
treat the nop case as an ftrace path resulting in superfluous code flow
for the case where ftrace is disabled. And finally, this also fixes up
references to a few undefined symbols when FUNCTION_TRACER=n.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 21:06:53 +09:00
Paul Mundt
a470b95e99 sh: Fix up ftrace build error when STACK_DEBUG=n.
Presently the closest reference to function_trace_stop is within a
CONFIG_STACK_DEBUG block. When this is turned off, the build bails out
with a pcrel too far error. Reorder things a bit to handle the various
combinations.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 20:33:34 +09:00
Paul Mundt
fe27932052 sh: Use DECLARE_EXPORT() for mcount symbol export.
The function prototype for mcount is not defined if we are not building
with ftrace support enabled, so use DECLARE_EXPORT() to stub one in.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 20:32:14 +09:00
Paul Mundt
9f14b84afd sh: Replace DEBUG_STACKOVERFLOW with STACK_DEBUG.
STACK_DEBUG ties in to mcount in order to do function-granular stack
overflow checks as opposed to lazily checking from IRQ context. As the
default is nohz, the frequency of overflow checking is too irregular to
catch much useful information, and so the mcount approach employed by
sparc64 is adopted instead.

This kills off the old check entirely from the do_IRQ() path and now
adopts CONFIG_MCOUNT instead.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 20:05:34 +09:00
Paul Mundt
473d1cf4ee sh: Decouple mcount from ftrace.
This adds a general CONFIG_MCOUNT in order to permit mcount generation
without ftrace support. This is primarily for allowing platforms to
enable aggressive stack overflow checking without having to enable ftrace
support. Based on the sparc64 implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 19:56:58 +09:00
Paul Mundt
f686d8c11c Merge branches 'sh/ftrace' and 'sh/stable-updates' 2009-07-11 10:08:33 +09:00
Matt Fleming
7816fecd03 sh: Mark __switch_to() as __notrace_funcgraph
Annotate __switch_to() so that the function graph tracer does not try to
trace it. Use __notrace_funcgraph, as opposed to notrace, so that other
tracers can continue to trace __switch_to().

The reason that we don't want to trace __switch_to() with the function
graph tracer is because of how the return address stack in task_struct
is implemented. When we enter __switch_to we store the real return
address on prev's ret_stack. When we return from __switch_to() we've
patched the return address on the kernel stack to be
return_to_handler. Calling return_to_handler we do,

       -> ftrace_return_to_handler()
       	  -> ftrace_pop_return_ftrace()

Which tries to pop the real return address from current->ret_stack. The
problem being that we stored the return address on prev->ret_stack, but
current now points to next, and next->ret_stack doesn't contain the
correct return address (and is possibly even empty).

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 10:08:06 +09:00
Matt Fleming
327933f5d6 sh: Function graph tracer support
Add both dynamic and static function graph tracer support for sh.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 10:08:01 +09:00
Matt Fleming
b99610fb9c sh: Provide diagnostic kernel stack checks
Enable kernel stack checking code in both the dynamic ftrace and mcount
code paths. Check the stack to see if it's overflowing and make sure
that the stack pointer contains an address that's either in init_stack
or after the bss.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 10:07:58 +09:00
Peter Zijlstra
c99e6efe1b sched: INIT_PREEMPT_COUNT
Pull the initial preempt_count value into a single
definition site.

Maintainers for: alpha, ia64 and m68k, please have a look,
your arch code is funny.

The header magic is a bit odd, but similar to the KERNEL_DS
one, CPP waits with expanding these macros until the
INIT_THREAD_INFO macro itself is expanded, which is in
arch/*/kernel/init_task.c where we've already included
sched.h so we're good.

Cc: tony.luck@intel.com
Cc: rth@twiddle.net
Cc: geert@linux-m68k.org
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-10 14:24:05 -07:00
Tim Abbott
2802e34590 sh: Clean up linker script using new linker script macros.
This patch converts the sh architecture to use the new linker script
macros in include/asm-generic/vmlinux.lds.h.

Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-10 15:58:16 +09:00
Tejun Heo
023bf6f1b8 linker script: unify usage of discard definition
Discarded sections in different archs share some commonality but have
considerable differences.  This led to linker script for each arch
implementing its own /DISCARD/ definition, which makes maintaining
tedious and adding new entries error-prone.

This patch makes all linker scripts to move discard definitions to the
end of the linker script and use the common DISCARDS macro.  As ld
uses the first matching section definition, archs can include default
discarded sections by including them earlier in the linker script.

ia64 is notable because it first throws away some ia64 specific
subsections and then include the rest of the sections into the final
image, so those sections must be discarded before the inclusion.

defconfig compile tested for x86, x86-64, powerpc, powerpc64, ia64,
alpha, sparc, sparc64 and s390.  Michal Simek tested microblaze.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Tested-by: Michal Simek <monstr@monstr.eu>
Cc: linux-arch@vger.kernel.org
Cc: Michal Simek <monstr@monstr.eu>
Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Tony Luck <tony.luck@intel.com>
2009-07-09 11:27:40 +09:00
Paul Mundt
7119888df1 Merge branches 'sh/ftrace' and 'sh/cachetlb' 2009-07-06 20:19:28 +09:00
Matt Fleming
c652d780c9 sh: Add ftrace syscall tracing support
Now that I've added TIF_SYSCALL_FTRACE the thread flags do not fit into
a single byte any more. Code testing them now needs to be aware of the
upper and lower bytes.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-06 20:16:33 +09:00
Matt Fleming
c1340c053b sh: Define HAVE_FUNCTION_TRACE_MCOUNT_TEST
Enable HAVE_FUNCTION_TRACE_MCOUNT_TEST and test the value of
function_trace_stop from our assembly code as opposed to using the
generic C function. This should optimise our mcount/ftrace code path.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-06 19:53:53 +09:00
Matt Fleming
ca0d17277f sh: Fix the value of MCOUNT_INSN_OFFSET
It seems that MCOUNT_INSN_OFFSET was calculating the distance between
the wrong functions. The value that should have actually been computed
is the distance between ftrace_call and ftrace_stub. I discovered this
when I added some code to ftrace_caller.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-06 19:52:08 +09:00
Paul Mundt
0f60bb25b4 sh: Tidy up vmalloc fault handling.
This rewrites the vmalloc fault handling as per x86, which subsequently
allows for easy future tie-in for vmalloc_sync_all().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-05 03:18:47 +09:00
Paul Mundt
c63c3105e4 sh: use kprobes_built_in() for notify_page_fault().
Kill off the KPROBES ifdef, as per x86.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-05 02:50:10 +09:00
Paul Mundt
1ecc6ab669 Merge branches 'sh/hwblk', 'sh/cpuidle' and 'sh/stable-updates' 2009-07-05 00:33:40 +09:00
Matt Fleming
5084f61a4d sh: Use bootmem ontop of lmb for NUMA
Like the UP case, use lmb as the foundation of memory resource
management on NUMA.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-05 00:32:11 +09:00
Magnus Damm
7426394f20 sh: cpuidle for SuperH Mobile using hwblk
This patch adds cpuidle support for SuperH Mobile.

The sleep mode selected by cpuidle is compared with
the mode selected by the hwblk sleep code and the
best allowed mode is entered.

At this point "Sleep mode" and "Sleep mode + SF" are
supported. This code can easily be extended to support
"Software suspend mode", but the assembly code must
first be updated to avoid loosing interrupts.

Also, update the code to only copy the assembly snippet
into internal memory once at bootup.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-05 00:29:54 +09:00
Magnus Damm
a61c1a6366 sh: hwblk for sh7722
This patch contains the sh7722 specific hwblk implementation.

Hwblk ids are added to the processor specific header file,
module stop bits and areas are kept track of as hwblks,
clocks are converted to make use of the shared hwblk code.
Code to determine allowed sleep modes is also added.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-05 00:28:55 +09:00
Magnus Damm
79714acbab sh: hwblk base implementation
This patch is the hwblk base implementation, containing
structures and shared functions dealing with hardware blocks.

A each processor model should provide a list of hwblks and
describe which module stop bit that is associated with each
hwblck and how the hwblks are grouped together into areas.

The shared code keeps track of the usage count for each
hwblk and the areas. Fallback implementations for processor
specific code are also kept as weak symbols.

The clock framework, the runtime pm code and cpuidle will
all tie into this hwblk implementation.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-05 00:28:39 +09:00
Magnus Damm
9731f4a202 sh: add r8a66597 usb0 host to the se7724 board
Add USB host support for port CN27 on the Solution Engine 7724
board. The r8a66597-hcd driver is hooked up as a platform device
and some registers are configured to enable the USB host function.
The hardware driving the USB port is the on-chip USB0 block in
the sh7724 processor configured as USB host controller.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-05 00:23:56 +09:00
Tejun Heo
c43768cbb7 Merge branch 'master' into for-next
Pull linus#master to merge PER_CPU_DEF_ATTRIBUTES and alpha build fix
changes.  As alpha in percpu tree uses 'weak' attribute instead of
inline assembly, there's no need for __used attribute.

Conflicts:
	arch/alpha/include/asm/percpu.h
	arch/mn10300/kernel/vmlinux.lds.S
	include/linux/percpu-defs.h
2009-07-04 07:13:18 +09:00
Matt Fleming
c601a51af1 sh: Use bootmem ontop of lmb
Rework the bootmem allocator to use the lmb framework.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-03 16:16:54 +09:00
Paul Mundt
47220f623c sh: define PERF_COUNTER_INDEX_OFFSET.
Fixes up recent build breakage.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-03 13:08:28 +09:00
Matt Fleming
34e19ada99 sh: Fix compiler error and include the definition of IS_ERR_VALUE
When arch/sh/include/asm/syscall_32.h is included from a file that
doesn't also include linux/err.h the following error is produced,

In file included from /home/matt/src/kernels/sh-2.6/arch/sh/include/asm/syscall.h:5,
                 from kernel/trace/trace_syscalls.c:3:
/home/matt/src/kernels/sh-2.6/arch/sh/include/asm/syscall_32.h: In function 'syscall_get_error':
/home/matt/src/kernels/sh-2.6/arch/sh/include/asm/syscall_32.h:28: error: implicit declaration of function 'IS_ERR_VALUE'
make[2]: *** [kernel/trace/trace_syscalls.o] Error 1
make[1]: *** [kernel/trace] Error 2
make: *** [kernel] Error 2

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-02 03:32:48 +09:00
Magnus Damm
0802d9e55c sh: re-add LCDC fbdev support to the Migo-R defconfig
Re-add LCDC fbdev support to the Migo-R defconfig.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-01 15:31:33 +09:00
Magnus Damm
84f7597c11 sh: fix se7724 ceu names
Use "ceu0" and "ceu1" as CEU names instead of "ceu".
This fixes "memchunk" kernel command line selection
on the solution engine 7724 board.

With this patch applied use "memchunk.ceu0=1m" or
"memchunk.ceu1=1m" on kernel command line to override
physically memory size to one meg for CEU0 or CEU1.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-01 15:31:29 +09:00
Kuninori Morimoto
ec87805c63 sh: ms7724se: Enable sh_eth in defconfig.
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-29 16:50:49 +09:00
Joe Perches
9a660a6e1a arch/sh/boards/mach-se/7206/io.c: Remove unnecessary semicolons
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-29 16:35:09 +09:00
Kuninori Morimoto
a80cad950f sh: ms7724se: Add sh_eth support
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-26 16:24:02 +09:00
Paul Mundt
1fbcf37128 sh: Kill off unused DEBUG_BOOTMEM symbol.
This was killed off in generic code some time ago, kill off the left over
symbol.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-25 21:17:19 +09:00
Paul Mundt
163b2f0ba9 sh64: Hook up page fault events for software perf counters.
sh64 can use these as well, so tie them up there as well.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-25 02:49:03 +09:00
Paul Mundt
7433ab7703 sh: Hook up page fault events for software perf counters.
This adds page fault instrumentation for the software performance
counters. Follows the x86 and powerpc changes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-25 02:30:10 +09:00
Paul Mundt
d94d4adb7d sh: make set_perf_counter_pending() static inline.
Fixes up a recently introduced build error.

Reported-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-24 22:35:30 +09:00
Tejun Heo
405d967dc7 linker script: throw away .discard section
x86 throws away .discard section but no other archs do.  Also,
.discard is not thrown away while linking modules.  Make every arch
and module linking throw it away.  This will be used to define dummy
variables for percpu declarations and definitions.

This patch is based on Ivan Kokshaysky's alpha percpu patch.

[ Impact: always throw away everything in .discard ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Bryan Wu <cooloney@kernel.org>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@elte.hu>
2009-06-24 15:13:38 +09:00
Paul Mundt
bb38c222e0 sh: Fix up HAVE_PERF_COUNTERS typo.
That's HAVE_PERF_COUNTERS not HAVE_PERF_COUNTER. This was right
initially but I seem to have screwed it up while re-typing it out
by hand on another machine when I checked it in. Hmph.

Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-24 01:41:05 +09:00
Paul Mundt
971121f271 sh: Fix up more dma-mapping fallout.
commit dbe6f18691
("dma-mapping: mark dma_sync_single and dma_sync_sg as deprecated"
conveniently broke every single SH build.

In the future it would be great if people could at least bother
figuring out how to use grep.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-23 17:36:23 +09:00
Paul Mundt
2eb2a43682 sh: SH7786 SMP support.
SH7786 is roughly identical to SH-X3 proto SMP, though there are only 2
CPUs. This just wraps in to the existing SH-X3 SMP code with some minor
changes for SH7786, including wiring up the IPIs properly, enabling
IRQ_PER_CPU, and so forth.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-23 17:30:17 +09:00
Paul Mundt
b29fa1fbc2 sh: Wire up the uncached fixmap on sh64 as well.
Now that sh64 also can use the uncached section, wire up the fixmap for
it as well.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-23 17:30:17 +09:00
Paul Mundt
997d003093 sh: Use local TLB flush in set_pte_phys().
set_pte_phys() presently uses the global flush_tlb_one(), which locks on
SMP trying to do the IPI. As we have not even initialized the other CPUs
at this point, switch to the local_ variant so the flush happens on the
boot CPU.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-23 17:30:17 +09:00
Paul Mundt
2e046b9487 sh: Provide cpu_idle_wait() to fix up cpuidle/SMP build.
Crib the x86 cpu_idle_wait() implementation and shove it in with the
idle code, subsequently enabling ARCH_HAS_CPU_IDLE_WAIT.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-23 17:30:17 +09:00
Linus Torvalds
d06063cc22 Move FAULT_FLAG_xyz into handle_mm_fault() callers
This allows the callers to now pass down the full set of FAULT_FLAG_xyz
flags to handle_mm_fault().  All callers have been (mechanically)
converted to the new calling convention, there's almost certainly room
for architectures to clean up their code and then add FAULT_FLAG_RETRY
when that support is added.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-21 13:08:22 -07:00
Linus Torvalds
15fc204afc Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (56 commits)
  sh: Fix declaration of __kernel_sigreturn and __kernel_rt_sigreturn
  sh: Enable soc-camera in ap325rxa/migor/se7724 defconfigs.
  sh: remove stray markers.
  sh: defconfig updates.
  sh: pci: Initial PCI-Express support for SH7786 Urquell board.
  sh: Generic HAVE_PERF_COUNTER support.
  SH: convert migor to soc-camera as platform-device
  SH: convert ap325rxa to soc-camera as platform-device
  soc-camera: unify i2c camera device platform data
  sh: add platform data for r8a66597-hcd in setup-sh7723
  sh: add platform data for r8a66597-hcd in setup-sh7366
  sh: x3proto: add platform data for r8a66597-hcd
  sh: highlander: add platform data for r8a66597-hcd
  sh: sh7785lcr: add platform data for r8a66597-hcd
  sh: turn off irqs when disabling CMT/TMU timers
  sh: use kzalloc() for cpg clocks
  sh: unbreak WARN_ON()
  sh: Use generic atomic64_t implementation.
  sh: Revised clock function in highlander
  sh: Update r7780mp defconfig
  ...
2009-06-18 14:07:35 -07:00
Oleg Nesterov
bba7fc0a21 ptrace: remove PT_DTRACE from avr32, mn10300, parisc, s390, sh, xtensa
avr32, mn10300, parisc, s390, sh, xtensa:

They never set PT_DTRACE, but clear it after do_execve().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Chris Zankel <chris@zankel.net>
Acked-by: Roland McGrath <roland@redhat.com>
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18 13:03:48 -07:00
Matt Fleming
9445571169 sh: Fix declaration of __kernel_sigreturn and __kernel_rt_sigreturn
GCC 4.5.0 complains about the declaration of variables
__kernel_sigreturn and __kernel_rt_sigreturn because they have type
void.  Correctly declare these symbols as functions to fix the
following error,

arch/sh/kernel/signal_32.c: In function 'setup_frame':
arch/sh/kernel/signal_32.c:368:14: error: taking address of expression of type 'void'
arch/sh/kernel/signal_32.c: In function 'setup_rt_frame':
arch/sh/kernel/signal_32.c:452:14: error: taking address of expression of type 'void'
make[1]: *** [arch/sh/kernel/signal_32.o] Error 1
make: *** [arch/sh/kernel] Error 2

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-18 18:25:21 +09:00
Paul Mundt
99d921c2ff sh: Enable soc-camera in ap325rxa/migor/se7724 defconfigs.
The MEDIA_SUPPORT option disabled soc-camera support, so re-enable it for
the impacted defconfigs.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-18 16:09:38 +09:00
Christoph Hellwig
4505ffda54 sh: remove stray markers.
arch/sh has a couple of stray markers without any users introduced
in commit 3d58695edb.  Remove them in
preparation of removing the markers in favour of the TRACE_EVENT
macro (and also because we don't keep dead code around).

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-18 13:38:26 +09:00
Paul Mundt
b7d3740ace sh: defconfig updates.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-18 13:28:09 +09:00
Matthew Wilcox
a6c140969b Delete pcibios_select_root
This function was only used by pci_claim_resource(), and the last commit
deleted that use.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-17 14:04:42 -07:00
Paul Mundt
5713e60210 sh: pci: Initial PCI-Express support for SH7786 Urquell board.
This adds initial support for the PCI-Express module in the SH7786,
particularly as it relates to the urquell platform. Presently it is
only supported in root complex mode, with endpoint mode still requiring
more debugging. 29/32-bit mode and lane configurations are selectable via
board mode pins, and are otherwise fixed.

Only 4x and 1x PCI channels are presently handled, the PCI bridge still
requires additional debugging and stabilization in hardware.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 18:20:48 +09:00
Paul Mundt
3d3638da49 Merge branches 'sh/pci-express-integration', 'sh/rsk-updates', 'sh/platform-updates' and 'sh/perf_counter' 2009-06-17 16:37:26 +09:00
Paul Mundt
9c93e59697 sh: Generic HAVE_PERF_COUNTER support.
This enables support for the generic software-based perf counters.

Hardware counter support could be added in the future, but the lack
of a performance counter IRQ makes this rather dubious.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 16:34:45 +09:00
Guennadi Liakhovetski
2cb582ca0d SH: convert migor to soc-camera as platform-device
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 16:22:48 +09:00
Guennadi Liakhovetski
194a17305c SH: convert ap325rxa to soc-camera as platform-device
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 16:22:41 +09:00
Guennadi Liakhovetski
0a861e9eb7 soc-camera: unify i2c camera device platform data
Unify i2c camera device platform data to point to struct soc_camera_link
for a smooth transition to soc-camera as a platform driver.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 16:22:34 +09:00
Yoshihiro Shimoda
f73c8f53cc sh: add platform data for r8a66597-hcd in setup-sh7723
and remove redundant parameter for r8a66597-hcd.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 16:21:48 +09:00
Yoshihiro Shimoda
6b64929c1e sh: add platform data for r8a66597-hcd in setup-sh7366
and remove redundant parameter for r8a66597-hcd.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 16:21:00 +09:00
Yoshihiro Shimoda
fcaf99d20d sh: x3proto: add platform data for r8a66597-hcd
and remove redundant parameter for r8a66597-hcd.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 16:19:43 +09:00
Yoshihiro Shimoda
6239b20d1b sh: highlander: add platform data for r8a66597-hcd
and remove redundant parameter for r8a66597-hcd.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 16:19:34 +09:00
Yoshihiro Shimoda
5a62a22514 sh: sh7785lcr: add platform data for r8a66597-hcd
and remove redundant parameter for r8a66597-hcd.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 16:19:00 +09:00
Magnus Damm
4c7eb4ebc9 sh: use kzalloc() for cpg clocks
Convert the shared clock cpg code from bootmem to slab.
Without this patch the current bootmem code triggers
WARN_ON() because the slab is available.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 15:39:53 +09:00
Magnus Damm
0ec39885b2 sh: unbreak WARN_ON()
Fix WARN_ON() by modifying the bug trap handling code to
always return in the in-kernel instruction pointer case.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 15:39:52 +09:00
Randy Dunlap
e4c9dd0fba kmap_types: make most arches use generic header file
Convert most arches to use asm-generic/kmap_types.h.

Move the KM_FENCE_ macro additions into asm-generic/kmap_types.h,
controlled by __WITH_KM_FENCE from each arch's kmap_types.h file.

Would be nice to be able to add custom KM_types per arch, but I don't yet
see a nice, clean way to do that.

Built on x86_64, i386, mips, sparc, alpha(tonyb), powerpc(tonyb), and
68k(tonyb).

Note: avr32 should be able to remove KM_PTE2 (since it's not used) and
then just use the generic kmap_types.h file.  Get avr32 maintainer
approval.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: <linux-arch@vger.kernel.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Bryan Wu <cooloney@kernel.org>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: "Luck Tony" <tony.luck@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16 19:47:51 -07:00
Alexey Dobriyan
bb1f17b037 mm: consolidate init_mm definition
* create mm/init-mm.c, move init_mm there
* remove INIT_MM, initialize init_mm with C99 initializer
* unexport init_mm on all arches:

  init_mm is already unexported on x86.

  One strange place is some OMAP driver (drivers/video/omap/) which
  won't build modular, but it's already wants get_vm_area() export.
  Somebody should look there.

[akpm@linux-foundation.org: add missing #includes]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Cc: Americo Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16 19:47:28 -07:00
Paul Mundt
f01789c688 sh: Use generic atomic64_t implementation.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 10:43:13 +09:00
Nobuhiro Iwamatsu
39f4490c70 sh: Revised clock function in highlander
Clock function was changed, but highlander used old function.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-16 16:49:11 +09:00
Nobuhiro Iwamatsu
02a146dffa sh: Update r7780mp defconfig
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-16 16:49:06 +09:00
Nobuhiro Iwamatsu
15ba400ebb sh: Add support mtd mapping for highlander
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-16 16:49:03 +09:00
Paul Mundt
66765fe1b6 sh: pci: SH7786 PCI ops.
This adds in preliminary support for the SH7786 PCIe module PCI ops,
and the corresponding module definitions.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-16 06:26:08 +09:00
Paul Mundt
8c6b44d00a sh: pci: Allow register_pci_controller() to handle overlapping regions.
Some host controllers (such as SH7786) have overlapping regions that are
fixed in hardware. The resource allocator does the right thing in
managing this space already, so the conflict case is non-fatal.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-16 06:01:58 +09:00
Magnus Damm
724cfb9440 sh: smsc911x support for the rsk7203 board
This patch adds support for the LAN9118 ethernet on rsk7203.

The LAN9118 controller is hooked up using a 16-bit data bus,
but the rsk7203 board does not swap the byte lanes as needed
between the sh7203 processor and the the ethernet controller.

In the processor the CS memory window is configured in 16-bit
mode but the smsc911x driver is told to do 32-bit accesses to
improve performance. The SMSC911X_SWAP_FIFO flag is used
to tell the driver to do software byte swapping of fifo data.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-16 05:57:07 +09:00
Paul Mundt
8b27fc6de1 sh: Set EARLY_SCIF_CONSOLE_PORT sanely for SH7786.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-16 03:58:25 +09:00
Paul Mundt
5d0e945a24 sh: urquell: Add system FPGA mode pin support.
Urquell has a system FPGA capable of reading the mode pin states from
software, wire this up in the machvec.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-15 19:02:37 +09:00
Matt Fleming
0c50f6f383 sh: Make the atomic functions safe for irqsoff tracing
The irqsoff tracer uses the atomic_* functions internally, but the
implementations of those functions in arch/sh/include/asm/atomic-irq.h
disable irqs to achieve atomicity. A continuous loop ensues where we
disable interrupts, trace the interrupt disabling, call atomic_*
functions, disable interrupts, trace the interrupt disabling, etc..

The simplest solution to all this is to just convert uses of
local_irq_save()/local_irq_restore() the raw_* equivalents because the
raw_* equivalents don't call trace_hardirqs_on()/trace_hardirqs_off().

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-15 00:31:17 +09:00
Paul Mundt
3767f3f1ee sh: Convert sh64 to use the generic checksum code.
This plugs in GENERIC_CSUM support on sh64, and kills off all of the old
references.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-15 00:00:42 +09:00
Paul Mundt
2b74b85693 sh: Derive COMMAND_LINE_SIZE from asm-generic/setup.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:27:41 +09:00
Paul Mundt
7fb8156d50 sh: Switch to asm-generic versions for identical headers.
This switches over mman/param/parport/serial/socket/ucontext.h.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:26:48 +09:00
Paul Mundt
bdc90d461d sh: Convert to asm-generic/signal.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:25:57 +09:00
Paul Mundt
a8bd468313 sh: Convert to asm-generic/types.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:25:27 +09:00
Paul Mundt
84f8369015 sh: Convert to asm-generic/scatterlist.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:25:04 +09:00
Paul Mundt
508fb69886 sh: Convert to asm-generic/unaligned.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:24:43 +09:00
Paul Mundt
5db455bd55 sh: Convert to asm-generic/module.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:24:14 +09:00
Paul Mundt
7b2758228f sh: Conver to asm-generic/mmu_context.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:23:41 +09:00
Paul Mundt
f8f06bc74b sh: Tidy up duplication in irq/swab/timex.h.
The asm-generic versions have some helper definitions that we can use
instead, drop our definitions and use those instead.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:21:54 +09:00
Paul Mundt
6f2ea72975 sh: Convert ipc/shm bits to their asm-generic versions.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:20:27 +09:00
Paul Mundt
4b1239559e sh: Convert to asm-generic/termbits.h and termios.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:17:57 +09:00
Paul Mundt
bc8d422d11 sh: Convert to asm-generic/posix_types.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 23:16:27 +09:00
Paul Mundt
9deaa3bcff sh: Convert to asm-generic/dma.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 21:45:06 +09:00
Paul Mundt
4822994a23 sh: Convert to asm-generic/current.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 21:34:26 +09:00
Paul Mundt
bff7b55bdb Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-14 21:22:15 +09:00
Paul Mundt
6fe32a4685 sh: Bump the earlytimer probe devices up.
Presently the earlytimer probe handles the clockevents driver, which
requires that the clockevents driver be registered first. This bumps it
up by 1 to include the clocksource device, which can be safely ignored
if it doesn't exist, as we will simply error out on that path and defer
to the jiffies clocksource.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 20:02:30 +09:00
Paul Mundt
a34c7e3e7b sh: Use generic sched_clock().
The generic sched_clock() handles INITIAL_JIFFIES now as well, so we can
just use that instead.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 19:48:48 +09:00
Paul Mundt
1d29ebebcb sh: Bump the earlytimer bits back to time_init().
These were handled through late_time_init due to kmalloc() and friends
not being available earlier on previously. Now with slab caches being
available much earlier, this is no longer necessary, and we can move the
initialization up to an earlier point. One of the benefits with this is
that printk times are available a bit earlier!

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 19:45:40 +09:00
Rusty Russell
e09377bae4 cpumask: Use accessors for cpu_*_mask: sh
Use the accessors rather than frobbing bits directly (the new versions
are const).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 18:24:16 +09:00
Rusty Russell
74c86d6757 cpumask: use mm_cpumask() wrapper: sh
Makes code futureproof against the impending change to mm->cpu_vm_mask.

It's also a chance to use the new cpumask_ ops which take a pointer
(the older ones are deprecated, but there's no hurry for arch code).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 18:24:15 +09:00
Rusty Russell
819807df6e cpumask: arch_send_call_function_ipi_mask: sh
We're weaning the core code off handing cpumask's around on-stack.
This introduces arch_send_call_function_ipi_mask(), and by defining
it, the old arch_send_call_function_ipi is defined by the core code.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 18:24:14 +09:00
Rusty Russell
0cb73f4c46 cpumask: remove the now-obsoleted pcibus_to_cpumask(): sh
cpumask_of_pcibus() is the new version.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 18:24:13 +09:00
Huang Weiyi
78c99ba1b1 sh: pci: remove duplicated #include's
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 17:48:43 +09:00
Linus Torvalds
cd166bd0dd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  add generic lib/checksum.c
  asm-generic: add a generic uaccess.h
  asm-generic: add generic NOMMU versions of some headers
  asm-generic: add generic atomic.h and io.h
  asm-generic: add legacy I/O header files
  asm-generic: add generic versions of common headers
  asm-generic: make bitops.h usable
  asm-generic: make pci.h usable directly
  asm-generic: make get_rtc_time overridable
  asm-generic: rename page.h and uaccess.h
  asm-generic: rename atomic.h to atomic-long.h
  asm-generic: add a generic unistd.h
  asm-generic: add generic ABI headers
  asm-generic: add generic sysv ipc headers
  asm-generic: introduce asm/bitsperlong.h
  asm-generic: rename termios.h, signal.h and mman.h
2009-06-12 18:15:51 -07:00
Rusty Russell
5933048c69 module: cleanup FIXME comments about trimming exception table entries.
Everyone cut and paste this comment from my original one.  We now do
it generically, so cut the comments.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Amerigo Wang <amwang@redhat.com>
2009-06-12 21:47:05 +09:30
Arnd Bergmann
5b02ee3d21 asm-generic: merge branch 'master' of torvalds/linux-2.6
Fixes a merge conflict against the x86 tree caused by a fix to
atomic.h which I renamed to atomic_long.h.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2009-06-12 11:32:58 +02:00
Paul Mundt
19470e185a sh: Wire up sys_perf_counter_open.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-12 01:33:22 +03:00
Paul Mundt
cf64c800f0 Merge branch 'sh/ftrace' of git://github.com/mfleming/linux-2.6 2009-06-12 01:12:44 +03:00
Arnd Bergmann
5b17e1cd89 asm-generic: rename page.h and uaccess.h
The current asm-generic/page.h only contains the get_order
function, and asm-generic/uaccess.h only implements
unaligned accesses. This renames the file to getorder.h
and uaccess-unaligned.h to make room for new page.h
and uaccess.h file that will be usable by all simple
(e.g. nommu) architectures.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2009-06-11 21:02:17 +02:00
Arnd Bergmann
72099ed271 asm-generic: rename atomic.h to atomic-long.h
The existing asm-generic/atomic.h only defines the
atomic_long type. This renames it to atomic-long.h
so we have a place to add a truly generic atomic.h
that can be used on all non-SMP systems.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
2009-06-11 21:02:17 +02:00
Arnd Bergmann
c31ae4bb4a asm-generic: introduce asm/bitsperlong.h
This provides a reliable way for asm-generic/types.h and other
files to find out if it is running on a 32 or 64 bit platform.

We cannot use CONFIG_64BIT for this in headers that are included
from user space because CONFIG symbols are not available there.
We also cannot do it inside of asm/types.h because some headers
need the word size but cannot include types.h.

The solution is to introduce a new header <asm/bitsperlong.h>
that defines both __BITS_PER_LONG for user space and
BITS_PER_LONG for usage in the kernel. The asm-generic
version falls back to 32 bit unless the architecture overrides
it, which I did for all 64 bit platforms.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2009-06-11 21:02:14 +02:00
Arnd Bergmann
63b852a6b6 asm-generic: rename termios.h, signal.h and mman.h
The existing asm-generic versions are incomplete and included
by some architectures. New architectures should be able
to use a generic version, so rename the existing files and
change all users, which lets us add the new files.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2009-06-11 21:01:52 +02:00
Matt Fleming
9e28c46b7d sh: Fix dynamic ftrace's NOP action.
Ftrace on sh handles nop'ing out trace function calls differently than
other architectures. Instead of inserting NOP instructions in place of
the call to the function tracer we branch over the call instructions
and continue executing the main body of the function.

This patch fixes a bug in the implementation of ftrace_modify_code()
where we check that the old value of the code we're about to replace
is an expected one. In the ftrace_make_call() code path
ftrace_modify_code() was comparing the old instruction value with NOP
instructions. The compare was failing because we never actually insert
NOP instructions. It makes sense to just get rid of the NOP
instructions in ftrace_nop and compare the old code with the address
of the function body if we're expecting ftrace to have nop'd out the
function trace call.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
2009-06-11 19:00:58 +01:00
Matt Fleming
7780b6a299 sh: Update my email address
Use my current email address as my gentoo account will be closed at
some point.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
2009-06-11 09:26:43 +01:00
Paul Mundt
54ff328b46 sh: Tie sparseirq in to Kconfig.
Now that the dependent patches are merged, we are ready to enable
sparseirq support. This simply adds the Kconfig option, and then converts
from the _cpu to the _node allocation routines to follow the upstream
sparseirq API changes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-11 10:33:09 +03:00
Paul Mundt
6a1555fdde sh: Wire up sys_rt_tgsigqueueinfo.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-11 09:38:05 +03:00
Paul Mundt
75c936aec0 sh: Fix sys_pwritev() syscall table entry for sh32.
There was a typo here that had this as sys_writev() instead of
sys_pwritev(), fix this up. sh64 got this right, as did the preadv()
case.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-11 09:33:53 +03:00
Aoi Shinkai
4c7c997886 sh: Fix sh4a llsc-based cmpxchg()
This fixes up a typo in the ll/sc based cmpxchg code which apparently
wasn't getting a lot of testing due to the swapped old/new pair. With
that fixed up, the ll/sc code also starts using it and provides its own
atomic_add_unless().

Signed-off-by: Aoi Shinkai <shinkoi2005@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-11 09:31:55 +03:00
Kuninori Morimoto
f168dd00a9 sh: sh7724: Add JPU support
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Acked-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-11 09:17:17 +03:00
Kuninori Morimoto
c5eeff1f8e sh: sh7724: INTC setting update
This patch follows Rev 0.50 manual

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-11 09:17:12 +03:00
Magnus Damm
46e9371c0e sh: sh7722 clock framework rewrite
This patch rewrites the sh7722 clock framework code.
The new code makes use of the recently merged div4,
div6 and mstp32 helper code. Both extal and dll are
supported as input clocks to the pll.

While at it, now when all SuperH Mobile processors
are converted, fix CONFIG_SH_CLK_CPG_LEGACY to depend
on CONFIG_ARCH_SHMOBILE.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-11 09:15:15 +03:00