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2010-04-19sh: Enable SH-X3 hardware synonym avoidance handling.Paul Mundt1-0/+1
This enables support for the hardware synonym avoidance handling on SH-X3 CPUs for the case where dcache aliases are possible. icache handling is retained, but we flip on broadcasting of the block invalidations due to the lack of coherency otherwise on SMP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-29sh: tlb debugfs support.Matt Fleming1-3/+5
Export the status of the utlb and itlb entries through debugfs. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-17sh: uncached mapping helpers.Paul Mundt1-0/+1
This adds some helper routines for uncached mapping support. This simplifies some of the cases where we need to check the uncached mapping boundaries in addition to giving us a centralized location for building more complex manipulation on top of. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-19sh: Split out MMUCR.URB based entry wiring in to shared helper.Paul Mundt1-2/+2
Presently this is duplicated between tlb-sh4 and tlb-pteaex. Split the helpers out in to a generic tlb-urb that can be used by any parts equipped with MMUCR.URB. At the same time, move the SH-5 code out-of-line, as we require single global state for DTLB entry wiring. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-18sh: Merge _32/_64 ioremap implementations.Paul Mundt1-1/+1
There is nothing of interest in the _64 version anymore, so the _32 one can be renamed and used unconditionally. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-16sh: Add fixed ioremap supportMatt Fleming1-0/+1
Some devices need to be ioremap'd and accessed very early in the boot process. It is not possible to use the standard ioremap() function in this case because that requires kmalloc()'ing some virtual address space and kmalloc() may not be available so early in boot. This patch provides fixmap mappings that allow physical address ranges to be remapped into the kernel address space during the early boot stages. Signed-off-by: Matt Fleming <matt@console-pimps.org>
2010-01-13sh: fixed PMB mode refactoring.Paul Mundt1-1/+1
This introduces some much overdue chainsawing of the fixed PMB support. fixed PMB was introduced initially to work around the fact that dynamic PMB mode was relatively broken, though they were never intended to converge. The main areas where there are differences are whether the system is booted in 29-bit mode or 32-bit mode, and whether legacy mappings are to be preserved. Any system booting in true 32-bit mode will not care about legacy mappings, so these are roughly decoupled. Regardless of the entry point, PMB and 32BIT are directly related as far as the kernel is concerned, so we also switch back to having one select the other. With legacy mappings iterated through and applied in the initialization path it's now possible to finally merge the two implementations and permit dynamic remapping overtop of remaining entries regardless of whether boot mappings are crafted by hand or inherited from the boot loader. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-12sh: Split out the unaligned counters and user bits.Paul Mundt1-1/+1
This splits out the unaligned access counters and userspace bits in to their own generic interface, which will allow them to be wired up on sh64 too. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-02sh: Move page table allocation out of lineMatt Fleming1-1/+1
We also switched away from quicklists and instead moved to slab caches. After benchmarking both implementations the difference is negligible. The slab caches suit us better though because the size of a pgd table is just 4 entries when we're using a 3-level page table layout and quicklists always deal with pages. Signed-off-by: Matt Fleming <matt@console-pimps.org>
2009-10-10sh: Fold fixed-PMB support into dynamic PMB supportMatt Fleming1-2/+1
The initialisation process differs for CONFIG_PMB and for CONFIG_PMB_FIXED. For CONFIG_PMB_FIXED we need to register the PMB entries that were allocated by the bootloader. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-19sh: Build fix for disabled caches.Paul Mundt1-2/+0
This fixes up the build when caches are disabled, by linking in all of the cache routines directly. This paves the way for splitting out separate I and D cache disabling, similar to what sh64 had, and which we want for SH-X3 anyways. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-16sh: Merge the _32/_64 variants of arch/sh/mm/Makefile.Paul Mundt1-4/+66
Now that there is sufficient shared infrastructure, merge the Makefiles. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Split out extable.c _32 and _64 variants.Paul Mundt1-36/+4
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Split out 29-bit and 32-bit physical mode definitions.Paul Mundt1-1/+1
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-07sh: Add -Werror for clean directories.Paul Mundt1-0/+2
Follow the MIPS and sparc64 changes for -Werror instrumentation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-24sh: nommu: Kill off dummy page fault ops for SH-3/4.Paul Mundt1-2/+0
We stopped referencing these functions unconditionally when the old entry.S code was refactored, so this is just dead code at present. Kill it off. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21sh: Fix cache disabling build failures on nommu.Paul Mundt1-10/+14
The cache disabling stuff screwed up some of the sh4 nommu builds, fix it up again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21sh: Support explicit L1 cache disabling.Paul Mundt1-5/+6
This reworks the cache mode configuration in Kconfig, and allows for explicit selection of write-back/write-through/off configurations. All of the cache flushing routines are optimized away for the off case. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-08-01sh: Don't include fault-nommu on SH-2/SH-2A.Paul Mundt1-1/+3
fault-nommu defines the page fault handler stubs for SH-3/4 parts, but is not needed on SH-2/SH-2A now that the entry code has been logically separated. Add it in for SH-3 and SH-4 explicitly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-11sh: Kill off broken dma page ops.Paul Mundt1-3/+1
There's no point in keeping these around, they've been broken for some time, and the dmaenging/async_tx framework provides a far more reasonable interface. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08sh: Support for multiple nodes.Paul Mundt1-0/+1
This adds basic support for multiple nodes on SH machines. This is primarily useful for boards with many different memory blocks that are otherwise unused (SH7722/SH7785 URAM and so forth). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27sh: Add support for cacheline poking through debugfs.Paul Mundt1-0/+4
A simple debugging aid for easier visibility of the respective cachelines. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27sh: __addr_ok() and other misc nommu fixups.Yoshinori Sato1-2/+2
A few more outstanding nommu fixups.. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27sh: ioremap() overhaul.Paul Mundt1-3/+4
ioremap() overhaul. Add support for transparent PMB mapping, get rid of p3_ioremap(), etc. Also drop ioremap() and iounmap() routines from the machvec, as everyone can use the generic ioremap() API instead. For PCI memory apertures and other special cases, use the pci_iomap() API, as boards are already required to get the mapping right there. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27sh: page table alloc cleanups and page fault optimizations.Paul Mundt1-1/+1
Cleanup of page table allocators, using generic folded PMD and PUD helpers. TLB flushing operations are moved to a more sensible spot. The page fault handler is also optimized slightly, we no longer waste cycles on IRQ disabling for flushing of the page from the ITLB, since we're already under CLI protection by the initial exception handler. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27sh: SH-4A Privileged Space Mapping Buffer (PMB) support.Paul Mundt1-1/+2
Add support for 32-bit physical addressing through the SH-4A Privileged Space Mapping Buffer (PMB). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds1-0/+25
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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