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-rw-r--r--include/asm-powerpc/cputable.h3
-rw-r--r--include/asm-powerpc/machdep.h8
-rw-r--r--include/asm-powerpc/mmu-hash64.h140
-rw-r--r--include/asm-powerpc/page_64.h8
-rw-r--r--include/asm-powerpc/tlbflush.h3
5 files changed, 113 insertions, 49 deletions
diff --git a/include/asm-powerpc/cputable.h b/include/asm-powerpc/cputable.h
index d913f460e71..ae093ef6836 100644
--- a/include/asm-powerpc/cputable.h
+++ b/include/asm-powerpc/cputable.h
@@ -164,6 +164,7 @@ extern void do_feature_fixups(unsigned long value, void *fixup_start,
#define CPU_FTR_CELL_TB_BUG LONG_ASM_CONST(0x0000800000000000)
#define CPU_FTR_SPURR LONG_ASM_CONST(0x0001000000000000)
#define CPU_FTR_DSCR LONG_ASM_CONST(0x0002000000000000)
+#define CPU_FTR_1T_SEGMENT LONG_ASM_CONST(0x0004000000000000)
#ifndef __ASSEMBLY__
@@ -374,7 +375,7 @@ extern void do_feature_fixups(unsigned long value, void *fixup_start,
#define CPU_FTRS_POSSIBLE \
(CPU_FTRS_POWER3 | CPU_FTRS_RS64 | CPU_FTRS_POWER4 | \
CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | CPU_FTRS_POWER6 | \
- CPU_FTRS_CELL | CPU_FTRS_PA6T)
+ CPU_FTRS_CELL | CPU_FTRS_PA6T | CPU_FTR_1T_SEGMENT)
#else
enum {
CPU_FTRS_POSSIBLE =
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index cc7c17f16a9..6968f4300dc 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -51,22 +51,22 @@ struct machdep_calls {
#ifdef CONFIG_PPC64
void (*hpte_invalidate)(unsigned long slot,
unsigned long va,
- int psize,
+ int psize, int ssize,
int local);
long (*hpte_updatepp)(unsigned long slot,
unsigned long newpp,
unsigned long va,
- int pize,
+ int psize, int ssize,
int local);
void (*hpte_updateboltedpp)(unsigned long newpp,
unsigned long ea,
- int psize);
+ int psize, int ssize);
long (*hpte_insert)(unsigned long hpte_group,
unsigned long va,
unsigned long prpn,
unsigned long rflags,
unsigned long vflags,
- int psize);
+ int psize, int ssize);
long (*hpte_remove)(unsigned long hpte_group);
void (*flush_hash_range)(unsigned long number, int local);
diff --git a/include/asm-powerpc/mmu-hash64.h b/include/asm-powerpc/mmu-hash64.h
index b22b0d20e15..82328dec2b5 100644
--- a/include/asm-powerpc/mmu-hash64.h
+++ b/include/asm-powerpc/mmu-hash64.h
@@ -47,6 +47,8 @@ extern char initial_stab[];
/* Bits in the SLB VSID word */
#define SLB_VSID_SHIFT 12
+#define SLB_VSID_SHIFT_1T 24
+#define SLB_VSID_SSIZE_SHIFT 62
#define SLB_VSID_B ASM_CONST(0xc000000000000000)
#define SLB_VSID_B_256M ASM_CONST(0x0000000000000000)
#define SLB_VSID_B_1T ASM_CONST(0x4000000000000000)
@@ -66,6 +68,7 @@ extern char initial_stab[];
#define SLB_VSID_USER (SLB_VSID_KP|SLB_VSID_KS|SLB_VSID_C)
#define SLBIE_C (0x08000000)
+#define SLBIE_SSIZE_SHIFT 25
/*
* Hash table
@@ -77,7 +80,7 @@ extern char initial_stab[];
#define HPTE_V_AVPN_SHIFT 7
#define HPTE_V_AVPN ASM_CONST(0x3fffffffffffff80)
#define HPTE_V_AVPN_VAL(x) (((x) & HPTE_V_AVPN) >> HPTE_V_AVPN_SHIFT)
-#define HPTE_V_COMPARE(x,y) (!(((x) ^ (y)) & HPTE_V_AVPN))
+#define HPTE_V_COMPARE(x,y) (!(((x) ^ (y)) & 0xffffffffffffff80))
#define HPTE_V_BOLTED ASM_CONST(0x0000000000000010)
#define HPTE_V_LOCK ASM_CONST(0x0000000000000008)
#define HPTE_V_LARGE ASM_CONST(0x0000000000000004)
@@ -164,16 +167,19 @@ struct mmu_psize_def
#define MMU_SEGSIZE_256M 0
#define MMU_SEGSIZE_1T 1
+
#ifndef __ASSEMBLY__
/*
- * The current system page sizes
+ * The current system page and segment sizes
*/
extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];
extern int mmu_linear_psize;
extern int mmu_virtual_psize;
extern int mmu_vmalloc_psize;
extern int mmu_io_psize;
+extern int mmu_kernel_ssize;
+extern int mmu_highuser_ssize;
/*
* If the processor supports 64k normal pages but not 64k cache
@@ -195,13 +201,15 @@ extern int mmu_huge_psize;
* This function sets the AVPN and L fields of the HPTE appropriately
* for the page size
*/
-static inline unsigned long hpte_encode_v(unsigned long va, int psize)
+static inline unsigned long hpte_encode_v(unsigned long va, int psize,
+ int ssize)
{
- unsigned long v =
+ unsigned long v;
v = (va >> 23) & ~(mmu_psize_defs[psize].avpnm);
v <<= HPTE_V_AVPN_SHIFT;
if (psize != MMU_PAGE_4K)
v |= HPTE_V_LARGE;
+ v |= ((unsigned long) ssize) << HPTE_V_SSIZE_SHIFT;
return v;
}
@@ -226,20 +234,40 @@ static inline unsigned long hpte_encode_r(unsigned long pa, int psize)
}
/*
- * This hashes a virtual address for a 256Mb segment only for now
+ * Build a VA given VSID, EA and segment size
*/
+static inline unsigned long hpt_va(unsigned long ea, unsigned long vsid,
+ int ssize)
+{
+ if (ssize == MMU_SEGSIZE_256M)
+ return (vsid << 28) | (ea & 0xfffffffUL);
+ return (vsid << 40) | (ea & 0xffffffffffUL);
+}
-static inline unsigned long hpt_hash(unsigned long va, unsigned int shift)
+/*
+ * This hashes a virtual address
+ */
+
+static inline unsigned long hpt_hash(unsigned long va, unsigned int shift,
+ int ssize)
{
- return ((va >> 28) & 0x7fffffffffUL) ^ ((va & 0x0fffffffUL) >> shift);
+ unsigned long hash, vsid;
+
+ if (ssize == MMU_SEGSIZE_256M) {
+ hash = (va >> 28) ^ ((va & 0x0fffffffUL) >> shift);
+ } else {
+ vsid = va >> 40;
+ hash = vsid ^ (vsid << 25) ^ ((va & 0xffffffffffUL) >> shift);
+ }
+ return hash & 0x7fffffffffUL;
}
extern int __hash_page_4K(unsigned long ea, unsigned long access,
unsigned long vsid, pte_t *ptep, unsigned long trap,
- unsigned int local);
+ unsigned int local, int ssize);
extern int __hash_page_64K(unsigned long ea, unsigned long access,
unsigned long vsid, pte_t *ptep, unsigned long trap,
- unsigned int local);
+ unsigned int local, int ssize);
struct mm_struct;
extern int hash_page(unsigned long ea, unsigned long access, unsigned long trap);
extern int hash_huge_page(struct mm_struct *mm, unsigned long access,
@@ -248,7 +276,7 @@ extern int hash_huge_page(struct mm_struct *mm, unsigned long access,
extern int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
unsigned long pstart, unsigned long mode,
- int psize);
+ int psize, int ssize);
extern void htab_initialize(void);
extern void htab_initialize_secondary(void);
@@ -317,12 +345,17 @@ extern void slb_vmalloc_update(void);
* which are used by the iSeries firmware.
*/
-#define VSID_MULTIPLIER ASM_CONST(200730139) /* 28-bit prime */
-#define VSID_BITS 36
-#define VSID_MODULUS ((1UL<<VSID_BITS)-1)
+#define VSID_MULTIPLIER_256M ASM_CONST(200730139) /* 28-bit prime */
+#define VSID_BITS_256M 36
+#define VSID_MODULUS_256M ((1UL<<VSID_BITS_256M)-1)
-#define CONTEXT_BITS 19
-#define USER_ESID_BITS 16
+#define VSID_MULTIPLIER_1T ASM_CONST(12538073) /* 24-bit prime */
+#define VSID_BITS_1T 24
+#define VSID_MODULUS_1T ((1UL<<VSID_BITS_1T)-1)
+
+#define CONTEXT_BITS 19
+#define USER_ESID_BITS 16
+#define USER_ESID_BITS_1T 4
#define USER_VSID_RANGE (1UL << (USER_ESID_BITS + SID_SHIFT))
@@ -336,17 +369,17 @@ extern void slb_vmalloc_update(void);
* rx = scratch register (clobbered)
*
* - rt and rx must be different registers
- * - The answer will end up in the low 36 bits of rt. The higher
+ * - The answer will end up in the low VSID_BITS bits of rt. The higher
* bits may contain other garbage, so you may need to mask the
* result.
*/
-#define ASM_VSID_SCRAMBLE(rt, rx) \
- lis rx,VSID_MULTIPLIER@h; \
- ori rx,rx,VSID_MULTIPLIER@l; \
+#define ASM_VSID_SCRAMBLE(rt, rx, size) \
+ lis rx,VSID_MULTIPLIER_##size@h; \
+ ori rx,rx,VSID_MULTIPLIER_##size@l; \
mulld rt,rt,rx; /* rt = rt * MULTIPLIER */ \
\
- srdi rx,rt,VSID_BITS; \
- clrldi rt,rt,(64-VSID_BITS); \
+ srdi rx,rt,VSID_BITS_##size; \
+ clrldi rt,rt,(64-VSID_BITS_##size); \
add rt,rt,rx; /* add high and low bits */ \
/* Now, r3 == VSID (mod 2^36-1), and lies between 0 and \
* 2^36-1+2^28-1. That in particular means that if r3 >= \
@@ -355,7 +388,7 @@ extern void slb_vmalloc_update(void);
* doesn't, the answer is the low 36 bits of r3+1. So in all \
* cases the answer is the low 36 bits of (r3 + ((r3+1) >> 36))*/\
addi rx,rt,1; \
- srdi rx,rx,VSID_BITS; /* extract 2^36 bit */ \
+ srdi rx,rx,VSID_BITS_##size; /* extract 2^VSID_BITS bit */ \
add rt,rt,rx
@@ -377,37 +410,60 @@ typedef struct {
} mm_context_t;
-static inline unsigned long vsid_scramble(unsigned long protovsid)
-{
#if 0
- /* The code below is equivalent to this function for arguments
- * < 2^VSID_BITS, which is all this should ever be called
- * with. However gcc is not clever enough to compute the
- * modulus (2^n-1) without a second multiply. */
- return ((protovsid * VSID_MULTIPLIER) % VSID_MODULUS);
-#else /* 1 */
- unsigned long x;
+/*
+ * The code below is equivalent to this function for arguments
+ * < 2^VSID_BITS, which is all this should ever be called
+ * with. However gcc is not clever enough to compute the
+ * modulus (2^n-1) without a second multiply.
+ */
+#define vsid_scrample(protovsid, size) \
+ ((((protovsid) * VSID_MULTIPLIER_##size) % VSID_MODULUS_##size))
- x = protovsid * VSID_MULTIPLIER;
- x = (x >> VSID_BITS) + (x & VSID_MODULUS);
- return (x + ((x+1) >> VSID_BITS)) & VSID_MODULUS;
+#else /* 1 */
+#define vsid_scramble(protovsid, size) \
+ ({ \
+ unsigned long x; \
+ x = (protovsid) * VSID_MULTIPLIER_##size; \
+ x = (x >> VSID_BITS_##size) + (x & VSID_MODULUS_##size); \
+ (x + ((x+1) >> VSID_BITS_##size)) & VSID_MODULUS_##size; \
+ })
#endif /* 1 */
-}
/* This is only valid for addresses >= KERNELBASE */
-static inline unsigned long get_kernel_vsid(unsigned long ea)
+static inline unsigned long get_kernel_vsid(unsigned long ea, int ssize)
{
- return vsid_scramble(ea >> SID_SHIFT);
+ if (ssize == MMU_SEGSIZE_256M)
+ return vsid_scramble(ea >> SID_SHIFT, 256M);
+ return vsid_scramble(ea >> SID_SHIFT_1T, 1T);
}
-/* This is only valid for user addresses (which are below 2^41) */
-static inline unsigned long get_vsid(unsigned long context, unsigned long ea)
+/* Returns the segment size indicator for a user address */
+static inline int user_segment_size(unsigned long addr)
{
- return vsid_scramble((context << USER_ESID_BITS)
- | (ea >> SID_SHIFT));
+ /* Use 1T segments if possible for addresses >= 1T */
+ if (addr >= (1UL << SID_SHIFT_1T))
+ return mmu_highuser_ssize;
+ return MMU_SEGSIZE_256M;
}
-#define VSID_SCRAMBLE(pvsid) (((pvsid) * VSID_MULTIPLIER) % VSID_MODULUS)
+/* This is only valid for user addresses (which are below 2^44) */
+static inline unsigned long get_vsid(unsigned long context, unsigned long ea,
+ int ssize)
+{
+ if (ssize == MMU_SEGSIZE_256M)
+ return vsid_scramble((context << USER_ESID_BITS)
+ | (ea >> SID_SHIFT), 256M);
+ return vsid_scramble((context << USER_ESID_BITS_1T)
+ | (ea >> SID_SHIFT_1T), 1T);
+}
+
+/*
+ * This is only used on legacy iSeries in lparmap.c,
+ * hence the 256MB segment assumption.
+ */
+#define VSID_SCRAMBLE(pvsid) (((pvsid) * VSID_MULTIPLIER_256M) % \
+ VSID_MODULUS_256M)
#define KERNEL_VSID(ea) VSID_SCRAMBLE(GET_ESID(ea))
/* Physical address used by some IO functions */
diff --git a/include/asm-powerpc/page_64.h b/include/asm-powerpc/page_64.h
index 56a2df0f683..4ee82c61e4d 100644
--- a/include/asm-powerpc/page_64.h
+++ b/include/asm-powerpc/page_64.h
@@ -26,12 +26,18 @@
*/
#define PAGE_FACTOR (PAGE_SHIFT - HW_PAGE_SHIFT)
-/* Segment size */
+/* Segment size; normal 256M segments */
#define SID_SHIFT 28
#define SID_MASK ASM_CONST(0xfffffffff)
#define ESID_MASK 0xfffffffff0000000UL
#define GET_ESID(x) (((x) >> SID_SHIFT) & SID_MASK)
+/* 1T segments */
+#define SID_SHIFT_1T 40
+#define SID_MASK_1T 0xffffffUL
+#define ESID_MASK_1T 0xffffff0000000000UL
+#define GET_ESID_1T(x) (((x) >> SID_SHIFT_1T) & SID_MASK_1T)
+
#ifndef __ASSEMBLY__
#include <asm/cache.h>
diff --git a/include/asm-powerpc/tlbflush.h b/include/asm-powerpc/tlbflush.h
index 99a0439baa5..a022f806bb2 100644
--- a/include/asm-powerpc/tlbflush.h
+++ b/include/asm-powerpc/tlbflush.h
@@ -97,6 +97,7 @@ struct ppc64_tlb_batch {
real_pte_t pte[PPC64_TLB_BATCH_NR];
unsigned long vaddr[PPC64_TLB_BATCH_NR];
unsigned int psize;
+ int ssize;
};
DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
@@ -127,7 +128,7 @@ static inline void arch_leave_lazy_mmu_mode(void)
extern void flush_hash_page(unsigned long va, real_pte_t pte, int psize,
- int local);
+ int ssize, int local);
extern void flush_hash_range(unsigned long number, int local);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 09:53:50 +0000