- 15 8月, 2009 11 次提交
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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- 14 8月, 2009 8 次提交
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Matt Fleming 提交于
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: NMatt Fleming <matt@console-pimps.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
This is no longer used, kill it off. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Matt Fleming 提交于
Annotate various assembly code paths with CFI assembler directives so that DWARF unwind info is available for the unwinder. Signed-off-by: NMatt Fleming <matt@console-pimps.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Matt Fleming 提交于
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: NMatt Fleming <matt@console-pimps.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Matt Fleming 提交于
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: NMatt Fleming <matt@console-pimps.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 13 8月, 2009 7 次提交
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由 Matt Fleming 提交于
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: NMatt Fleming <matt@console-pimps.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Matt Fleming 提交于
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: NMatt Fleming <matt@console-pimps.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Matt Fleming 提交于
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: NMatt Fleming <matt@console-pimps.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Marcin Slusarz 提交于
Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com> Cc: linux-sh@vger.kernel.org Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
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: NMagnus Damm <damm@igel.co.jp> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
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: NMagnus Damm <damm@igel.co.jp> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
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: NMagnus Damm <damm@igel.co.jp> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 07 8月, 2009 5 次提交
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由 Magnus Damm 提交于
This patch moves the Migo-R specific header file from mach-common/ into mach-migor/ and removes unused cruft. Signed-off-by: NMagnus Damm <damm@igel.co.jp> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch moves all the romImage related header files into the mach/ directory. Signed-off-by: NMagnus Damm <damm@igel.co.jp> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
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: NMagnus Damm <damm@igel.co.jp> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
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: NMagnus Damm <damm@igel.co.jp> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
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: NMagnus Damm <damm@igel.co.jp> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 05 8月, 2009 1 次提交
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由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 04 8月, 2009 8 次提交
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由 Paul Mundt 提交于
This does a bit of unrolling for the SH-4 region flushers. Based on an earlier patch by SUGIOKA Toshinobu. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
kunmap_coherent() doesn't do anything with its arguments, so just kill them off. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
kmap_coherent() has gotten too big to leave as an inline, so we bring it out-of-line. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
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: NPaul Mundt <lethal@linux-sh.org>
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