kernel/git/stable/linux-stable.git/arch/sh/include, branch linux-2.6.37.y

sh: Fix up legacy PTEA space attribute mapping.

2011-02-17T23:14:24+00:00

commit efb3e34b6176d30c4fe8635fa8e1beb6280cc2cd upstream. When p3_ioremap() was converted to ioremap_prot() there was some breakage introduced where the 29-bit segmentation logic would trap the area range and return an identity mapping without having allowed the area specification to force mapping through page tables. This wires up a PCC mask for pgprot verification to work out whether to short-circuit the identity mapping on legacy parts, restoring the previous behaviour. Reported-by: Nobuhiro Iwamatsu Signed-off-by: Paul Mundt Signed-off-by: Greg Kroah-Hartman

sh: wire up accept4 syscall (non-multiplexed path)

2010-12-14T08:58:10+00:00

Signed-off-by: Carmelo Amoroso Signed-off-by: Paul Mundt

Merge branch 'sh/cachetlb' into sh-fixes-for-linus

2010-12-01T07:39:08+00:00

sh: Assume new page cache pages have dirty dcache lines.

2010-12-01T06:39:51+00:00

This follows the ARM change c01778001a4f5ad9c62d882776235f3f31922fdd ("ARM: 6379/1: Assume new page cache pages have dirty D-cache") for the same rationale: There are places in Linux where writes to newly allocated page cache pages happen without a subsequent call to flush_dcache_page() (several PIO drivers including USB HCD). This patch changes the meaning of PG_arch_1 to be PG_dcache_clean and always flush the D-cache for a newly mapped page in update_mmu_cache(). This addresses issues seen with executing binaries from MMC, in addition to some of the other HCDs that don't explicitly do cache management for their pipe-in buffers. Requested-by: Yoshihiro Shimoda Signed-off-by: Paul Mundt

sh: Add div6_reparent_clks to clock framework for FSI

2010-11-29T03:59:22+00:00

Current clk_ops doesn't support .init which is used to select external clock on ecovec without CONFIG_SH_CLK_CPG_LEGACY. To solve this problem, this patch add div6_reparent_clks to clock-sh7724. This patch solve compile error too. Signed-off-by: Kuninori Morimoto Signed-off-by: Paul Mundt

sh: Use GCC __builtin_prefetch() to implement prefetch().

2010-11-18T05:53:18+00:00

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 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 Signed-off-by: Stuart Menefy Signed-off-by: Paul Mundt

Merge branches 'sh/pio-death', 'sh/nommu', 'sh/clkfwk', 'sh/core' and 'sh/intc-extension' into sh-fixes-for-linus

2010-11-08T00:42:43+00:00

sh: Simplify phys_addr_mask()/PTE_PHYS_MASK for 29/32-bit.

2010-11-04T03:51:08+00:00

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

sh: nommu: Support building without an uncached mapping.

2010-11-04T03:46:19+00:00

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

sh: nommu: use 32-bit phys mode.

2010-11-04T03:32:24+00:00

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