On Aug 8, 2011, at 5:26 PM, Jimi Xenidis wrote:
> ICSWX is also used by the A2 processor to access coprocessors,
> although not all "chips" that contain A2s have coprocessors.
>
> Signed-off-by: Jimi Xenidis <ji...@pobox.com>
> ---
> arch/powerpc/include/asm/cputable.h | 2 +-
> arch/powerpc/include/asm/mmu-book3e.h | 4 ++++
> arch/powerpc/include/asm/reg_booke.h | 4 ++++
> arch/powerpc/kernel/cpu_setup_a2.S | 10 ++++++++--
> arch/powerpc/platforms/wsp/Kconfig | 1 +
> 5 files changed, 18 insertions(+), 3 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/cputable.h
> b/arch/powerpc/include/asm/cputable.h
> index e30442c..7044233 100644
> --- a/arch/powerpc/include/asm/cputable.h
> +++ b/arch/powerpc/include/asm/cputable.h
> @@ -437,7 +437,7 @@ extern const char *powerpc_base_platform;
> #define CPU_FTRS_COMPATIBLE (CPU_FTR_USE_TB | CPU_FTR_PPCAS_ARCH_V2)
>
> #define CPU_FTRS_A2 (CPU_FTR_USE_TB | CPU_FTR_SMT | CPU_FTR_DBELL | \
> - CPU_FTR_NOEXECUTE | CPU_FTR_NODSISRALIGN)
> + CPU_FTR_NOEXECUTE | CPU_FTR_NODSISRALIGN | CPU_FTR_ICSWX)
>
> #ifdef __powerpc64__
> #ifdef CONFIG_PPC_BOOK3E
> diff --git a/arch/powerpc/include/asm/mmu-book3e.h
> b/arch/powerpc/include/asm/mmu-book3e.h
> index 3ea0f9a..06d7f91 100644
> --- a/arch/powerpc/include/asm/mmu-book3e.h
> +++ b/arch/powerpc/include/asm/mmu-book3e.h
> @@ -212,6 +212,10 @@ typedef struct {
> unsigned int id;
> unsigned int active;
> unsigned long vdso_base;
> +#ifdef CONFIG_PPC_ICSWX
> + struct spinlock *cop_lockp; /* guard acop and cop_pid */
> + unsigned long acop; /* mask of enabled coprocessor types */
> +#endif /* CONFIG_PPC_ICSWX */
match whitespace (tab) formatting.
> } mm_context_t;
>
> /* Page size definitions, common between 32 and 64-bit
- k
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