DEFINE_RAW_SPINLOCK(native_tlbie_lock);
-static inline void __tlbie(unsigned long vpn, int psize, int ssize)
+static inline void __tlbie(unsigned long vpn, int psize, int apsize, int ssize)
{
unsigned long va;
unsigned int penc;
break;
default:
/* We need 14 to 14 + i bits of va */
- penc = mmu_psize_defs[psize].penc;
+ penc = mmu_psize_defs[psize].penc[apsize];
va &= ~((1ul << mmu_psize_defs[psize].shift) - 1);
va |= penc << 12;
va |= ssize << 8;
}
}
-static inline void __tlbiel(unsigned long vpn, int psize, int ssize)
+static inline void __tlbiel(unsigned long vpn, int psize, int apsize, int ssize)
{
unsigned long va;
unsigned int penc;
break;
default:
/* We need 14 to 14 + i bits of va */
- penc = mmu_psize_defs[psize].penc;
+ penc = mmu_psize_defs[psize].penc[apsize];
va &= ~((1ul << mmu_psize_defs[psize].shift) - 1);
va |= penc << 12;
va |= ssize << 8;
}
-static inline void tlbie(unsigned long vpn, int psize, int ssize, int local)
+static inline void tlbie(unsigned long vpn, int psize, int apsize,
+ int ssize, int local)
{
unsigned int use_local = local && mmu_has_feature(MMU_FTR_TLBIEL);
int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
raw_spin_lock(&native_tlbie_lock);
asm volatile("ptesync": : :"memory");
if (use_local) {
- __tlbiel(vpn, psize, ssize);
+ __tlbiel(vpn, psize, apsize, ssize);
asm volatile("ptesync": : :"memory");
} else {
- __tlbie(vpn, psize, ssize);
+ __tlbie(vpn, psize, apsize, ssize);
asm volatile("eieio; tlbsync; ptesync": : :"memory");
}
if (lock_tlbie && !use_local)
static long native_hpte_insert(unsigned long hpte_group, unsigned long vpn,
unsigned long pa, unsigned long rflags,
- unsigned long vflags, int psize, int ssize)
+ unsigned long vflags, int psize, int apsize, int ssize)
{
struct hash_pte *hptep = htab_address + hpte_group;
unsigned long hpte_v, hpte_r;
if (i == HPTES_PER_GROUP)
return -1;
- hpte_v = hpte_encode_v(vpn, psize, ssize) | vflags | HPTE_V_VALID;
- hpte_r = hpte_encode_r(pa, psize) | rflags;
+ hpte_v = hpte_encode_v(vpn, psize, apsize, ssize) | vflags | HPTE_V_VALID;
+ hpte_r = hpte_encode_r(pa, psize, apsize) | rflags;
if (!(vflags & HPTE_V_BOLTED)) {
DBG_LOW(" i=%x hpte_v=%016lx, hpte_r=%016lx\n",
return i;
}
+static inline int __hpte_actual_psize(unsigned int lp, int psize)
+{
+ int i, shift;
+ unsigned int mask;
+
+ /* start from 1 ignoring MMU_PAGE_4K */
+ for (i = 1; i < MMU_PAGE_COUNT; i++) {
+
+ /* invalid penc */
+ if (mmu_psize_defs[psize].penc[i] == -1)
+ continue;
+ /*
+ * encoding bits per actual page size
+ * PTE LP actual page size
+ * rrrr rrrz >=8KB
+ * rrrr rrzz >=16KB
+ * rrrr rzzz >=32KB
+ * rrrr zzzz >=64KB
+ * .......
+ */
+ shift = mmu_psize_defs[i].shift - LP_SHIFT;
+ if (shift > LP_BITS)
+ shift = LP_BITS;
+ mask = (1 << shift) - 1;
+ if ((lp & mask) == mmu_psize_defs[psize].penc[i])
+ return i;
+ }
+ return -1;
+}
+
+static inline int hpte_actual_psize(struct hash_pte *hptep, int psize)
+{
+ /* Look at the 8 bit LP value */
+ unsigned int lp = (hptep->r >> LP_SHIFT) & ((1 << LP_BITS) - 1);
+
+ if (!(hptep->v & HPTE_V_VALID))
+ return -1;
+
+ /* First check if it is large page */
+ if (!(hptep->v & HPTE_V_LARGE))
+ return MMU_PAGE_4K;
+
+ return __hpte_actual_psize(lp, psize);
+}
+
static long native_hpte_updatepp(unsigned long slot, unsigned long newpp,
unsigned long vpn, int psize, int ssize,
int local)
struct hash_pte *hptep = htab_address + slot;
unsigned long hpte_v, want_v;
int ret = 0;
+ int actual_psize;
- want_v = hpte_encode_v(vpn, psize, ssize);
+ want_v = hpte_encode_avpn(vpn, psize, ssize);
DBG_LOW(" update(vpn=%016lx, avpnv=%016lx, group=%lx, newpp=%lx)",
vpn, want_v & HPTE_V_AVPN, slot, newpp);
native_lock_hpte(hptep);
hpte_v = hptep->v;
-
+ actual_psize = hpte_actual_psize(hptep, psize);
+ if (actual_psize < 0) {
+ native_unlock_hpte(hptep);
+ return -1;
+ }
/* Even if we miss, we need to invalidate the TLB */
- if (!HPTE_V_COMPARE(hpte_v, want_v) || !(hpte_v & HPTE_V_VALID)) {
+ if (!HPTE_V_COMPARE(hpte_v, want_v)) {
DBG_LOW(" -> miss\n");
ret = -1;
} else {
native_unlock_hpte(hptep);
/* Ensure it is out of the tlb too. */
- tlbie(vpn, psize, ssize, local);
+ tlbie(vpn, psize, actual_psize, ssize, local);
return ret;
}
unsigned long want_v, hpte_v;
hash = hpt_hash(vpn, mmu_psize_defs[psize].shift, ssize);
- want_v = hpte_encode_v(vpn, psize, ssize);
+ want_v = hpte_encode_avpn(vpn, psize, ssize);
/* Bolted mappings are only ever in the primary group */
slot = (hash & htab_hash_mask) * HPTES_PER_GROUP;
static void native_hpte_updateboltedpp(unsigned long newpp, unsigned long ea,
int psize, int ssize)
{
+ int actual_psize;
unsigned long vpn;
unsigned long vsid;
long slot;
if (slot == -1)
panic("could not find page to bolt\n");
hptep = htab_address + slot;
+ actual_psize = hpte_actual_psize(hptep, psize);
+ if (actual_psize < 0)
+ return;
/* Update the HPTE */
hptep->r = (hptep->r & ~(HPTE_R_PP | HPTE_R_N)) |
(newpp & (HPTE_R_PP | HPTE_R_N));
/* Ensure it is out of the tlb too. */
- tlbie(vpn, psize, ssize, 0);
+ tlbie(vpn, psize, actual_psize, ssize, 0);
}
static void native_hpte_invalidate(unsigned long slot, unsigned long vpn,
unsigned long hpte_v;
unsigned long want_v;
unsigned long flags;
+ int actual_psize;
local_irq_save(flags);
DBG_LOW(" invalidate(vpn=%016lx, hash: %lx)\n", vpn, slot);
- want_v = hpte_encode_v(vpn, psize, ssize);
+ want_v = hpte_encode_avpn(vpn, psize, ssize);
native_lock_hpte(hptep);
hpte_v = hptep->v;
+ actual_psize = hpte_actual_psize(hptep, psize);
+ if (actual_psize < 0) {
+ native_unlock_hpte(hptep);
+ local_irq_restore(flags);
+ return;
+ }
/* Even if we miss, we need to invalidate the TLB */
- if (!HPTE_V_COMPARE(hpte_v, want_v) || !(hpte_v & HPTE_V_VALID))
+ if (!HPTE_V_COMPARE(hpte_v, want_v))
native_unlock_hpte(hptep);
else
/* Invalidate the hpte. NOTE: this also unlocks it */
hptep->v = 0;
/* Invalidate the TLB */
- tlbie(vpn, psize, ssize, local);
+ tlbie(vpn, psize, actual_psize, ssize, local);
local_irq_restore(flags);
}
-#define LP_SHIFT 12
-#define LP_BITS 8
-#define LP_MASK(i) ((0xFF >> (i)) << LP_SHIFT)
-
static void hpte_decode(struct hash_pte *hpte, unsigned long slot,
- int *psize, int *ssize, unsigned long *vpn)
+ int *psize, int *apsize, int *ssize, unsigned long *vpn)
{
unsigned long avpn, pteg, vpi;
- unsigned long hpte_r = hpte->r;
unsigned long hpte_v = hpte->v;
unsigned long vsid, seg_off;
- int i, size, shift, penc;
+ int size, a_size, shift;
+ /* Look at the 8 bit LP value */
+ unsigned int lp = (hpte->r >> LP_SHIFT) & ((1 << LP_BITS) - 1);
- if (!(hpte_v & HPTE_V_LARGE))
- size = MMU_PAGE_4K;
- else {
- for (i = 0; i < LP_BITS; i++) {
- if ((hpte_r & LP_MASK(i+1)) == LP_MASK(i+1))
- break;
- }
- penc = LP_MASK(i+1) >> LP_SHIFT;
+ if (!(hpte_v & HPTE_V_LARGE)) {
+ size = MMU_PAGE_4K;
+ a_size = MMU_PAGE_4K;
+ } else {
for (size = 0; size < MMU_PAGE_COUNT; size++) {
- /* 4K pages are not represented by LP */
- if (size == MMU_PAGE_4K)
- continue;
-
/* valid entries have a shift value */
if (!mmu_psize_defs[size].shift)
continue;
- if (penc == mmu_psize_defs[size].penc)
+ a_size = __hpte_actual_psize(lp, size);
+ if (a_size != -1)
break;
}
}
-
/* This works for all page sizes, and for 256M and 1T segments */
*ssize = hpte_v >> HPTE_V_SSIZE_SHIFT;
shift = mmu_psize_defs[size].shift;
default:
*vpn = size = 0;
}
- *psize = size;
+ *psize = size;
+ *apsize = a_size;
}
/*
struct hash_pte *hptep = htab_address;
unsigned long hpte_v;
unsigned long pteg_count;
- int psize, ssize;
+ int psize, apsize, ssize;
pteg_count = htab_hash_mask + 1;
* already hold the native_tlbie_lock.
*/
if (hpte_v & HPTE_V_VALID) {
- hpte_decode(hptep, slot, &psize, &ssize, &vpn);
+ hpte_decode(hptep, slot, &psize, &apsize, &ssize, &vpn);
hptep->v = 0;
- __tlbie(vpn, psize, ssize);
+ __tlbie(vpn, psize, apsize, ssize);
}
}
slot = (hash & htab_hash_mask) * HPTES_PER_GROUP;
slot += hidx & _PTEIDX_GROUP_IX;
hptep = htab_address + slot;
- want_v = hpte_encode_v(vpn, psize, ssize);
+ want_v = hpte_encode_avpn(vpn, psize, ssize);
native_lock_hpte(hptep);
hpte_v = hptep->v;
if (!HPTE_V_COMPARE(hpte_v, want_v) ||
pte_iterate_hashed_subpages(pte, psize,
vpn, index, shift) {
- __tlbiel(vpn, psize, ssize);
+ __tlbiel(vpn, psize, psize, ssize);
} pte_iterate_hashed_end();
}
asm volatile("ptesync":::"memory");
pte_iterate_hashed_subpages(pte, psize,
vpn, index, shift) {
- __tlbie(vpn, psize, ssize);
+ __tlbie(vpn, psize, psize, ssize);
} pte_iterate_hashed_end();
}
asm volatile("eieio; tlbsync; ptesync":::"memory");
projects / firefly-linux-kernel-4.4.55.git / blobdiff