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* sh: Nopped out p3_cache_init() on SH-5 also.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix up VMALLOC_START for SH-5.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Move over the SH-5 head.S and tlb.h.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Have SH-5 provide an {en,dis}able_fpu() impl.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: timer.h stub for SH-5.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Move in the SH-5 signal trampoline impl.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: More SH-5 cpuinfo tidying.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Consolidate slab/kmalloc minalign values.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Split out uaccess.h in to _32 and _64 variants.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: SH-5 also uses the ASID cache.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Split out system.h in to _32 and _64 variants.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Split out 29-bit and 32-bit physical mode definitions.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Split out processor.h in to _32 and _64 variants.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: SH-5 pt_regs.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Move in the SH-5 mmu_context headers.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: SH-5 byteorder routines.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: SH-5 version of current_thread_info().Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Split out irqflags.h in to _32 and _64 variants.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Split out asm/string.h for sh32 and sh64.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add SH-5 support to io.h.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add in cacheflush and DMA headers for SH-5.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Correct SH-5 instruction size value.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add cache definitions for SH-5.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add addrspace.h segmentation stub for SH-5.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: BUGFLAG_WARNING needs GENERIC_BUG.Paul Mundt2008-01-27
| | | | | | | Move the HAVE_ARCH_BUG/HAVE_ARCH_WARN_ON definitions underneath CONFIG_GENERIC_BUG. This is needed for BUGFLAG_WARNING usage. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix up fixmap location for SH-5.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add SH-5 support to asm/module.h.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Split out cache status bits per-CPU family.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Split out PXSEG segmentation per-CPU family.Paul Mundt2008-01-27
| | | | | | | | The CPU family abstraction already exists, so move out the PXSEG definition for each one. SH-2A already has this special cased, and SH-5 will as well. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Force __access_ok() to obey address space limit.Paul Mundt2008-01-10
| | | | | | | | | | | When the thread_info->addr_limit changes were introduced, __access_ok() was missed in the conversion, allowing user processes to perform P1/P2 accesses under certain conditions. This has already been corrected with the nommu refactoring in later kernels. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix argument page dcache flushing regression.Carmelo Amoroso2008-01-06
| | | | | | | | | | | | | In the do_execve() path, argument page handling used to explicitly call flush_dcache_page() for each page, this has since been reworked and uses flush_kernel_dcache_page() instead, which is presently a nop. Doing a simple modprobe/rmmod in a loop under busybox consistently manages to crash without providing a sane flush_kernel_dcache_page() implementation, so, plug in a simple implementation. Signed-off-by: Carmelo Amoroso <carmelo73@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix copy_{to,from}_user_page() with cache disabled.Heiko Schocher2007-11-18
| | | | | Signed-off-by: Heiko Schocher <heiko.schocher@invitel.hu> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: remove dead config symbols from SH codeJiri Olsa2007-11-08
| | | | | Signed-off-by: Jiri Olsa <olsajiri@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge branch 'page_colouring_despair'Paul Mundt2007-11-08
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| * sh: Kill off __{copy,clear}_user_page().Paul Mundt2007-11-06
| | | | | | | | | | | | | | | | | | Now that copy_to_user_page()/copy_from_user_page() are wired up, we can drop the old __copy_xxx() implementations. Now that the page colouring scheme has changed via kmap_coherent(), we can avoid the flush in these specific helpers. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Optimized copy_{to,from}_user_page() for SH-4.Paul Mundt2007-11-06
| | | | | | | | | | | | | | | | This moves copy_{to,from}_user_page() out-of-line on SH-4 and converts for the kmap_coherent() API. Based on the MIPS implementation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Wire up clear_user_highpage().Paul Mundt2007-11-06
| | | | | | | | | | | | | | With the kmap_coherent() API in place, this is trivial to implement, and lets us avoid the cache flush in certain cases. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | sh: Add a dummy vga.h.Paul Mundt2007-11-07
| | | | | | | | | | | | | | We have nothing to do here, but there are continually drivers that fail to build without it. Stub it in. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | sh: Fix up PAGE_KERNEL_PCC() for nommu.Paul Mundt2007-11-06
|/ | | | | | | PAGE_KERNEL_PCC() takes two arguments, which weren't reflected in the nommu case. Fix it up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Kill off the remaining ST40 cruft.Paul Mundt2007-11-06
| | | | | | | | | | | | | The ST40 stuff in-tree hasn't built for some time, and hasn't been updated for over 3 years. ST maintains their own out-of-tree changes and rebases occasionally, and that's ultimately where all of the ST40 users go anyways. In order for the ST40 code to be brought up to date most of the stuff removed in this changeset would have to be rewritten anyways, so there's very little benefit in keeping the remnants around either. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: remove PTRACE_O_TRACESYSGOOD from asm/ptrace.hMike Frysinger2007-11-06
| | | | | | | | | The common linux/ptrace.h already defines PTRACE_O_TRACESYSGOOD so there is no need to have arches do it. This also keeps glibc-2.7 from breaking since it has an enum for the PTRACE_O_* flags. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Decouple 4k and soft/hardirq stacks.Paul Mundt2007-11-01
| | | | | | | | | | | While using separate IRQ stacks can cut down on stack consumption, many users can also use 4k stacks directly without the additional need of separate stacks for soft and hardirqs. With this split, we support the same rationale for 4KSTACKS as m68knommu, with the IRQSTACKS abstraction as per ppc64. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Provide a __read_mostly section wrapper.Paul Mundt2007-10-30
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Move zero page param defs somewhere sensible.Paul Mundt2007-10-30
| | | | | | Follows s390 and others. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Use generic SMP_CACHE_BYTES/L1_CACHE_ALIGN.Paul Mundt2007-10-30
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Correct pte_page() breakage.Paul Mundt2007-10-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As noted by David: pte_page() is a macro defined as follows; include/asm-sh/pgtable.h #define pte_page(x) phys_to_page(pte_val(x)&PTE_PHYS_MASK) include/asm-sh/page.h #define phys_to_page(phys) (pfn_to_page(phys >> PAGE_SHIFT)) So as you can see the phys_to_page() macro doesn't wrap the 'phys' parameter in parentheses so we end up with; pte_val(x)&PTE_PHYS_MASK >> PAGE_SHIFT Which is not what we wanted as '>>' has a higher precedence than bitwise AND. I dug into the git repository and I believe this bug was added with this commit (104b8deaa5c0144cccfc7d914413ff80c7176af1); 2006-03-27 KAMEZAWA Hiroyuki [PATCH] unify pfn_to_page: sh pfn_to_page -#define phys_to_page(phys) (mem_map + (((phys)-__MEMORY_START) >> PAGE_SHIFT)) -#define page_to_phys(page) (((page - mem_map) << PAGE_SHIFT) + __MEMORY_START) +#define phys_to_page(phys) (pfn_to_page(phys >> PAGE_SHIFT)) +#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) Reported-by: David ADDISON <david.addison@st.com> Reported-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh/sh64: fixup dma-mapping for new sg layoutJens Axboe2007-10-23
| | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Add CONFIG_DEBUG_SG sg validationJens Axboe2007-10-22
| | | | | | | Add a Kconfig entry which will toggle some sanity checks on the sg entry and tables. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Change table chaining layoutJens Axboe2007-10-22
| | | | | | | | | | | | | | | | | Change the page member of the scatterlist structure to be an unsigned long, and encode more stuff in the lower bits: - Bits 0 and 1 zero: this is a normal sg entry. Next sg entry is located at sg + 1. - Bit 0 set: this is a chain entry, the next real entry is at ->page_link with the two low bits masked off. - Bit 1 set: this is the final entry in the sg entry. sg_next() will return NULL when passed such an entry. It's thus important that sg table users use the proper accessors to get and set the page member. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Fix misspellings of "system", "controller", "interrupt" and "necessary".Robert P. J. Day2007-10-19
| | | | | | | | Fix the various misspellings of "system", controller", "interrupt" and "[un]necessary". Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
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