From e99833448c5fa198a120db6d7087dd17149dc273 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Fri, 29 Apr 2016 23:25:42 +1000 Subject: [PATCH] powerpc/mm/radix: Add partition table format & callback Add structs and #defines related to the radix MMU partition table format. We also add a ppc_md callback for updating a partition table entry. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman --- 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 -#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) +#define RPDB_MASK 0x0ffffffffffff00fUL +#define RPDB_SHIFT (1UL << 8) +/* + * 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 cf09c6eb5ee7..47082bcbf1e5 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) */ -- 2.20.1