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GCC's __builtin_prefetch() was introduced a long time ago, all
supported GCC versions have it. So this patch is to use it for
implementing the prefetch on SH2A and SH4.
The current prefetch implementation is almost equivalent with
__builtin_prefetch.
The third parameter in the __builtin_prefetch is the locality
that it's not supported on SH architectures. It has been set
to three and it should be verified if it's suitable for SH2A
as well. I didn't test on this architecture.
The builtin usage should be more efficient that an __asm__
because less barriers, and because the compiler doesn't see the
inst as a "black box" allowing better code generation.
This has been already done on other architectures (see the commit:
0453fb3c528c5eb3483441a466b24a4cb409eec5).
Many thanks to Christian Bruel <christain.bruel@st.com> for his
support on evaluate the impact of the gcc built-in on SH4 arch.
No regressions found while testing with LMbench on STLinux targets.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This patch fixes the following error obtained when
compile the Kernel with the VSYSCALL support enabled:
SYSCALL arch/sh/kernel/vsyscall/vsyscall-trapa.so
sh4-linux/bin/ld: error in arch/sh/kernel/vsyscall/vsyscall-trapa.o(.eh_frame);
no .eh_frame_hdr table will be created.
AS arch/sh/kernel/vsyscall/vsyscall-syscall.o
Disassembling the vsyscall-trapa.o code, with this fix applied,
we get the __kernel_vsyscall symbol defined; otherwise it was
missing.
Disassembly of section .text:
00000000 <__kernel_vsyscall>:
0: 10 00 .word 0x0010
2: 00 00 .word 0x0000
[snip]
0000040 <__kernel_sigreturn>:
40: 05 93 mov.w 4e <__kernel_sigreturn+0xe>,r3 ! 77
42: 10 c3 trapa #16
[snip]
00000060 <__kernel_rt_sigreturn>:
60: 05 93 mov.w 6e <__kernel_rt_sigreturn+0xe>,r3 ! ad
62: 10 c3 trapa #16
[snip]
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Calling sys_cacheflush with ICACHE we can direclty flush
the icache without invoking the flush_cache_all function.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Now that clk_set_rate_ex() is gone, there is also no way to get at rate
setting algo id, which is now also completely unused. Kill it off before
new clock ops start using it.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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'sh/intc-extension' into sh-fixes-for-linus
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Given that __in_29bit_mode() is a constant for the non-PMB case, we can
simply use the PMB-facing version of phys_addr_mask() and drop the other
variants.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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These clocks are currently only used inside one .c file and are not
declared in any headers, therefore having them global is useless.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Now that nommu selects 32BIT we run in to the situation where SH-2A
supports an uncached identity mapping by way of the BSC, while the SH-2
does not. This provides stubs for the PC manglers and tidies up some of
the system*.h mess in the process.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The nommu code has regressed somewhat in that 29BIT gets set for the
SH-2/2A configs regardless of the fact that they are really 32BIT sans
MMU or PMB. This does a bit of tidying to get nommu properly selecting
32BIT as it was before.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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There was a leftover inw() used here that really just wants to be a
__raw_readw() instead. Convert it over.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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MRSHPC is wholly unused here, no need to trap it specially. If support is
added in the future it can be taken care of via platform data like on the
others.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Platform data takes care of all of these these days, kill them off.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Trivial shuffling and tidying.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The only reason this board needs to do PIO trapping is for ethernet,
which happens to follow the same scheme as its bigger brother the
edosk7760. With ethernet properly supported through the platform device,
we can kill off the left over PIO abortion.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The PIO trapping was only for MRSHPC and the SMC ethernet. Given that the
SMC ethernet is already properly handled and that nothing is using the
MRSHPC, none of this is needed.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This code has been untouched since it was merged many years ago, and has
severely bitrotted since, suggesting that the board has no real users
left. Notice of intent to remove has been sent out over the last few
years, with no takers. Kill it off.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Only the secureedge5410 was ever supported by this code, so make the
board specification explicit rather than perpetuating a mach group.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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None of these PIO routines do anything other than basic error checking,
get rid of them and use the generic fallbacks.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The microdev only has to contend with silly PIO mangling on anything
within the SuperIO range. As each of the SuperIO modules is already
speciail cased, we just shift that logic over to the ioport map.
With microdev PCI never being merged (and being fudamentally broken in
hardware), and the ethernet chip only doing 16-bit accesses already,
there's no need to maintain any of the extra special casing. Kill it all
off.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (215 commits)
ARM: memblock: setup lowmem mappings using memblock
ARM: memblock: move meminfo into find_limits directly
ARM: memblock: convert free_highpages() to use memblock
ARM: move freeing of highmem pages out of mem_init()
ARM: memblock: convert memory detail printing to use memblock
ARM: memblock: use memblock to free memory into arm_bootmem_init()
ARM: memblock: use memblock when initializing memory allocators
ARM: ensure membank array is always sorted
ARM: 6466/1: implement flush_icache_all for the rest of the CPUs
ARM: 6464/2: fix spinlock recursion in adjust_pte()
ARM: fix memblock breakage
ARM: 6465/1: Fix data abort accessing proc_info from __lookup_processor_type
ARM: 6460/1: ixp2000: fix type of ixp2000_timer_interrupt
ARM: 6449/1: Fix for compiler warning of uninitialized variable.
ARM: 6445/1: fixup TCM memory types
ARM: imx: Add wake functionality to GPIO
ARM: mx5: Add gpio-keys to mx51 babbage board
ARM: imx: Add gpio-keys to plat-mxc
mx31_3ds: Fix spi registration
mx31_3ds: Fix the logic for detecting the debug board
...
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devel-stable
Conflicts:
drivers/video/sh_mobile_hdmi.c
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Fix a compile breakage, caused by my own careless copy-paste.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This is a preparation for HDMI hotplug support. This patch just moves all
platform defined video modes for the sh_mobile_lcdcfb driver to separate
arrays and switches all users to use element 0 of that array, so, this patch
doesn't introduce any functional changes and as such should not cause any
regressions.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: (38 commits)
kbuild: convert `arch/tile' to the kconfig mainmenu upgrade
README: cite nconfig
Revert "kconfig: Temporarily disable dependency warnings"
kconfig: Use PATH_MAX instead of 128 for path buffer sizes.
kconfig: Fix realloc usage()
kconfig: Propagate const
kconfig: Don't go out from read config loop when you read new symbol
kconfig: fix menuconfig on debian lenny
kbuild: migrate all arch to the kconfig mainmenu upgrade
kconfig: expand file names
kconfig: use the file's name of sourced file
kconfig: constify file name
kconfig: don't emit warning upon rootmenu's prompt redefinition
kconfig: replace KERNELVERSION usage by the mainmenu's prompt
kconfig: delay gconf window initialization
kconfig: expand by default the rootmenu's prompt
kconfig: add a symbol string expansion helper
kconfig: regen parser
kconfig: implement the `mainmenu' directive
kconfig: allow PACKAGE to be defined on the compiler's command-line
...
Fix up trivial conflict in arch/mn10300/Kconfig
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We need to revert the temporary hack in 71ebc01, hence the merge.
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Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Michal Marek <mmarek@suse.cz>
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* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (32 commits)
sh: intc: switch irq_desc iteration to new active IRQ iterator.
sh: fix up cpu hotplug IRQ migration for irq_data changes.
sh: oprofile: Make sure the backtrace op is available for timer-fallback.
sh64: oprofile: Fix up kernel stack pointer size mismatch.
sh: oprofile: Fix up and extend op_name_from_perf_id().
sh: lockless get_user_pages_fast()
sh64: _PAGE_SPECIAL support.
sound: sh: ctrl_in/outX to __raw_read/writeX conversion.
sh: disable deprecated genirq support.
sh: update show_interrupts() for irq_data chip lookup.
sh: intc: irq_data conversion.
sh64: irq_data conversion.
sh64: update for IRQ flag handling naming changes.
rtc: rtc-rs5c313: ctrl_in/outX to __raw_read/writeX conversion.
sh: mach-se: irq_data conversion.
input: hp680_ts_input: ctrl_in/outX to __raw_read/writeX conversion.
input: jornada680_kbd: ctrl_in/outX to __raw_read/writeX conversion.
sh: hd64461: irq_data conversion.
sh: mach-x3proto: irq_data conversion.
sh: mach-systemh: irq_data conversion.
...
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This fixes up the __cpu_disable() path's IRQ migration for the
irq_data changes.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Presently with hardware counter support disabled the backtrace op never
gets initialized. This is a regression over the previous behaviour, so
simply add it back in.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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For the backtrace code its assumed that the stack pointer is 32-bits,
which is not the case with the sh64 registers. Use the shared
kernel_stack_pointer() helper to get at the actual register, which
already takes care of the necessary typecasting.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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op_name_from_perf_id() currently returns a local variable, which isn't
terribly productive. As we only handle a single PMU case for now, simply
allocate and free the string from the arch init/exit context and have
op_name_from_perf_id() hand back the cached string.
This also takes UTS_MACHINE in to account, given that we build for
multiple architectures.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Implement get_user_pages_fast without locking in the fastpath on sh.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Now that sh64 has grown extended page flag support we finally have a free
bit for _PAGE_SPECIAL. Wire it up.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Now that all of the controllers have been fixed up, we can finally select
GENERIC_HARDIRQS_NO_DEPRECATED.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Presently the irq chip is found through the irq_desc, but as this is
going away convert over to an irq_data lookup instead.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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irq_32.c was updated for the new API, while irq_64.c was overlooked. This
syncs them up and gets things building again.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The introduction of MAX_PHYSMEM_BITS in to the initial cpuinfo struct
causes a build error when sparsemem is disabled and asm/sparsemem.h is
not brought in by other means. Include it explicitly.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Now that the genirq code provides an IRQ bitmap of its own and the
necessary API to manipulate it, there's no need to keep our own version
around anymore.
In the process we kill off some unused IRQ reservation code, with future
users now having to tie in to the genirq API as normal.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Now that there's a HAVE_GENERIC_HARDIRQS, switch over.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Switch over to the new allocator functions.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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