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>
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>
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>
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>
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>
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>
This patch updates the div6 clock helper code to add support
for enable(), disable() and set_rate() callbacks.
Needed by the camera clock enabling board code on Migo-R.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds sh7722 mode pin and pin function
controller comments.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds comments for the sh7724 mode pins
and pin function controller.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch is sh7723 mode pin V2. Mode pins and
pin function controller comments are added.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch reworks the mode pin code to keep the pin
definitions in one place. The mode pins values are now
the value of the bit instead of bit number.
With this patch in place the sh7785 header file contains
mode pin comments. The sh7785 clock code and the sh7785lcr
board code are updated to reflect the new shared mode pins.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds div6 clock helper code. The div6 clocks
are simply 6-bit divide-by-n modules where n is 1 to 64.
Needed for vclk on sh7722, sh7723, sh7343 and sh7366.
sh7724 needs this even more for vclk, fclka, fclkb,
irdaclk and spuclk.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch fixes the 16-bit case of the sh4a specific
unaligned access implementation. Without this patch
the 16-bit version of sh4a get_unaligned() results in
a 32-bit read which may read more data than intended
and/or cross page boundaries.
Unbreaks mtd NOR write handling on Migo-R.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Add shared code for 4-bit divisor clocks.
Processor specific code can use SH_CLK_DIV4()
to initialize div4 clocks, and then use
sh_clk_div4_register() for registration.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Add shared 32-bit module stop bit clock support.
Processor specific code can use SH_CLK_MSTP32()
to initialize module stop bit clocks, and then
use sh_clk_mstp32() for registration.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds sh7785 mode pin definitions. Mode pins and
pin function controller comments are added as well.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Add mode pin support for the SuperH architecture V2.
With this patch applied the board code can add their
own function to export the cpu mode pin configuration.
In most cases this will be a constant bitmap, but
boards that allow reading this from a register can
instead read out the pin state from hardware.
The code warns if a pin is tested but no board specific
mode pin function has been provided.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The flat loader uses an architecture's flat_stack_align() to align the
stack but assumes word-alignment is enough for the data sections.
However, on the Xtensa S6000 we have registers up to 128bit width
which can be used from userspace and therefor need userspace stack and
data-section alignment of at least this size.
This patch drops flat_stack_align() and uses the same alignment that
is required for slab caches, ARCH_SLAB_MINALIGN, or wordsize if it's
not defined by the architecture.
It also fixes m32r which was obviously kaput, aligning an
uninitialized stack entry instead of the stack pointer.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Oskar Schirmer <os@emlix.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Bryan Wu <cooloney@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Johannes Weiner <jw@emlix.com>
Acked-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
None of the SH PCI controllers support MWI, it is always treated as a
direct memory write, so simply disable it outright. In the case of the
PCI cache line size, consult that for the pci_dma_burst_advice()
strategy, and switch over to PCI_DMA_BURST_MULTIPLE, as PPC64.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch removes the ->build_rate_table() callback,
->recalc() may instead be used for this purpose.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This adds preliminary support for the ms7724se solution engine board.
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
hd64461 is mapped in a fixed location, so the I/O base itself is fairly
meaningless as a configuration item. Additionally, this makes it
impossible to share hd64461 code alongside generic drivers (in the case
of sh_dac_audio), so simply make it commonly defined and permit the
mach_is_foo() logic to work out the proper semantics.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This plugs in all of the MSTP functions in to the clock framework,
and hands them off to the platform devices that want them.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This adopts the OMAP clock framework debugfs bits and replaces the aging
procfs bits. The procfs clocks entry was primarily a debugging aid, and
used to be tied in to cpuinfo before the clock list grew too unweildly.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This adds support for constructing a rate table by looking at potential
divisors for a specified clock. Each FQRMR clock is given its own table.
Presently each table is rebuilt when the parent propagates down a new
rate, so some more logic needs to be added to do this more intelligently.
Additionally, a fairly generic round_rate() implementation is then
layered on top of it, which subsequently provides us with cpufreq support.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This updates the SH7785 CPU code as well as the SH7785LCR board support
code for making use of the newly refactored clock framework. Support for
the legacy CPG clocks is dropped at this point, with the extal frequency
fed in from the board code.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This moves out the old legacy CPG clocks to their own file, and converts
over the existing users. With these clocks going away and each CPU
dealing with them on their own, CPUs can gradually move over to the new
interface.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Now with all of the TMU users moved over to the new TMU driver, and the
old TMU driver killed off, the left-over infrastructure can go along
with it.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch removes the old TMU driver (CONFIG_SH_TMU/timer-tmu.c)
As replacement, select the sh_tmu driver with CONFIG_SH_TIMER_TMU
and configure timer channel using platform data.
If multiple TMU channels are enabled using platform data, use the
earlytimer parameter on the kernel command line to select channel.
For instance, use "earlytimer=sh_tmu.0" to select the first channel.
To verify which timer is being used, look at printouts or the timer
irq count in /proc/interrupts.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This stubs in clk_get_sys() from the ARM clkdev implementation.
Tentatively conver the clk_get() lookup code to use this, and once the
rest of the in-tree users are happy with this, it can replace the
fallback lookups.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The only user for this is the SH-Mobile r_clk, which is now added as a
root clock and can be kicked via propagate_rate() as usual. Given that,
there is no longer any need for the special clk_recalc_rate(), so we kill
it off.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This causes the generic clk_set_parent() implementation to be a bit more
intelligent. A clk_reparent() is added to move the clock over to the new
parent's sibling list, which then allows the generic rate propagation
code to succeed. This also becomes a nop if the new and old parents are
unchanged.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
There are a couple of instances where a clk_enable() can fail, which the
SH-Mobile code presently handles, but doesn't get reported all the way
back up. This fixes up the return type so the errors make it all the way
down to the drivers.
Additionally, we now also error out properly if the parent enable fails.
Prep work for aggressively turning off unused clocks on boot.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
There is no real distinction here in behaviour, either a clock needs to
be enabled on initialiation or not. The ALWAYS_ENABLED flag was always
intended to only apply to clocks that were physically always on and could
simply not be disabled at all from software. Unfortunately over time this
was abused and the meaning became a bit blurry.
So, we kill off both of all of those paths now, as well as the newer
NEEDS_INIT flag, and consolidate on a CLK_ENABLE_ON_INIT. Clocks that
need to be enabled on initialization can set this, and it will purposely
enable them and bump the refcount up.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This resyncs the rate propagation strategy with the scheme used by the
OMAP clock framework. Child clocks are tracked on a list under each
parent and propagation happens there specifically rather than constantly
iterating over the global clock list.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This adds a followparent_recalc() helper for clocks that just follow the
parent's rate. Switch over the few CPUs that use this scheme for some of
their clocks.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This fixes up the broken I2C offset in 32-bit mode.
The cause is because the board datasheet had a mistake.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
There is nothing in these routines that inherently depends on R0 use.
Given that these routines are inlined, it is rather easy to blow up the
compiler by exhausting the spill class when performing a 64-bit swab.
This presently manifests itself as the following:
CC fs/ocfs2/suballoc.o
fs/ocfs2/suballoc.c: In function 'ocfs2_reserve_suballoc_bits':
fs/ocfs2/suballoc.c:638: error: unrecognizable insn:
(insn 2793 1230 1231 103 arch/sh/include/asm/swab.h:33 (set (reg:HI 853)
(subreg:HI (reg:SI 149 macl) 2)) -1 (expr_list:REG_DEAD (reg:SI 149 macl)
(nil)))
fs/ocfs2/suballoc.c:638: internal compiler error: in extract_insn, at recog.c:1991
This patch switches over to using an arbitrarily assigned register instead.
While the same issue does not exist in the SH-5 case, there is likewise no harm
in having an alternate register used for the byterev/shari pair.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
