On 09/04/16 16:13, Aneesh Kumar K.V wrote:
> We also add mach dep call back for updating partition table entry.
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
> ---
> arch/powerpc/include/asm/book3s/64/mmu.h | 31 +++++++++++++++++++++++++++++--
> arch/powerpc/include/asm/machdep.h | 1 +
> arch/powerpc/include/asm/reg.h | 1 +
> 3 files changed, 31 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h
> b/arch/powerpc/include/asm/book3s/64/mmu.h
> index aadb0bbc5c71..b86786f2521c 100644
> --- a/arch/powerpc/include/asm/book3s/64/mmu.h
> +++ b/arch/powerpc/include/asm/book3s/64/mmu.h
> @@ -21,12 +21,39 @@ struct mmu_psize_def {
> extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];
> #endif /* __ASSEMBLY__ */
>
> -#ifdef CONFIG_PPC_STD_MMU_64
> /* 64-bit classic hash table MMU */
> #include <asm/book3s/64/mmu-hash.h>
> -#endif
>
> #ifndef __ASSEMBLY__
> +/*
> + * ISA 3.0 partiton and process table entry format
> + */
> +struct prtb_entry {
> + __be64 prtb0;
> + __be64 prtb1;
> +};
> +extern struct prtb_entry *process_tb;
> +
> +struct patb_entry {
> + __be64 patb0;
> + __be64 patb1;
> +};
> +extern struct patb_entry *partition_tb;
> +
> +#define PATB_HR (1UL << 63)
> +#define PATB_GR (1UL << 63)
Some comments would help - Host Radix/Guest Radix
> +#define RPDB_MASK 0x0ffffffffffff00fUL
> +#define RPDB_SHIFT (1UL << 8)
Same here
> +/*
> + * Limit process table to PAGE_SIZE table. This
> + * also limit the max pid we can support.
> + * MAX_USER_CONTEXT * 16 bytes of space.
> + */
> +#define PRTB_SIZE_SHIFT (CONTEXT_BITS + 4)
> +/*
> + * Power9 currently only support 64K partition table size.
> + */
> +#define PATB_SIZE_SHIFT 16
>
> typedef unsigned long mm_context_id_t;
> struct spinlock;
> diff --git a/arch/powerpc/include/asm/machdep.h
> b/arch/powerpc/include/asm/machdep.h
> index fd22442d30a9..6bdcd0da9e21 100644
> --- a/arch/powerpc/include/asm/machdep.h
> +++ b/arch/powerpc/include/asm/machdep.h
> @@ -256,6 +256,7 @@ struct machdep_calls {
> #ifdef CONFIG_ARCH_RANDOM
> int (*get_random_seed)(unsigned long *v);
> #endif
> + int (*update_partition_table)(u64);
> };
>
> extern void e500_idle(void);
> diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
> index f5f4c66bbbc9..b546e6f28d44 100644
> --- a/arch/powerpc/include/asm/reg.h
> +++ b/arch/powerpc/include/asm/reg.h
> @@ -587,6 +587,7 @@
> #define SPRN_PIR 0x3FF /* Processor Identification Register */
> #endif
> #define SPRN_TIR 0x1BE /* Thread Identification Register */
> +#define SPRN_PTCR 0x1D0 /* Partition table control Register */
> #define SPRN_PSPB 0x09F /* Problem State Priority Boost reg */
> #define SPRN_PTEHI 0x3D5 /* 981 7450 PTE HI word (S/W TLB load) */
> #define SPRN_PTELO 0x3D6 /* 982 7450 PTE LO word (S/W TLB load) */
>
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