long iSeries_hpte_insert(unsigned long hpte_group, unsigned long va, unsigned long pa, unsigned long rflags, unsigned long vflags, int psize) { long slot; struct hash_pte lhpte; int secondary = 0; BUG_ON(psize != MMU_PAGE_4K); /* * The hypervisor tries both primary and secondary. * If we are being called to insert in the secondary, * it means we have already tried both primary and secondary, * so we return failure immediately. */ if (vflags & HPTE_V_SECONDARY) return -1; iSeries_hlock(hpte_group); slot = HvCallHpt_findValid(&lhpte, va >> HW_PAGE_SHIFT); if (unlikely(lhpte.v & HPTE_V_VALID)) { if (vflags & HPTE_V_BOLTED) { HvCallHpt_setSwBits(slot, 0x10, 0); HvCallHpt_setPp(slot, PP_RWXX); iSeries_hunlock(hpte_group); if (slot < 0) return 0x8 | (slot & 7); else return slot & 7; } BUG(); } if (slot == -1) { /* No available entry found in either group */ iSeries_hunlock(hpte_group); return -1; } if (slot < 0) { /* MSB set means secondary group */ vflags |= HPTE_V_SECONDARY; secondary = 1; slot &= 0x7fffffffffffffff; } lhpte.v = hpte_encode_v(va, MMU_PAGE_4K) | vflags | HPTE_V_VALID; lhpte.r = hpte_encode_r(phys_to_abs(pa), MMU_PAGE_4K) | rflags; /* Now fill in the actual HPTE */ HvCallHpt_addValidate(slot, secondary, &lhpte); iSeries_hunlock(hpte_group); return (secondary << 3) | (slot & 7); }
static long iSeries_hpte_insert(unsigned long hpte_group, unsigned long va, unsigned long prpn, int secondary, unsigned long hpteflags, int bolted, int large) { long slot; HPTE lhpte; /* * The hypervisor tries both primary and secondary. * If we are being called to insert in the secondary, * it means we have already tried both primary and secondary, * so we return failure immediately. */ if (secondary) return -1; iSeries_hlock(hpte_group); slot = HvCallHpt_findValid(&lhpte, va >> PAGE_SHIFT); BUG_ON(lhpte.dw0.dw0.v); if (slot == -1) { /* No available entry found in either group */ iSeries_hunlock(hpte_group); return -1; } if (slot < 0) { /* MSB set means secondary group */ secondary = 1; slot &= 0x7fffffffffffffff; } lhpte.dw1.dword1 = 0; lhpte.dw1.dw1.rpn = physRpn_to_absRpn(prpn); lhpte.dw1.flags.flags = hpteflags; lhpte.dw0.dword0 = 0; lhpte.dw0.dw0.avpn = va >> 23; lhpte.dw0.dw0.h = secondary; lhpte.dw0.dw0.bolted = bolted; lhpte.dw0.dw0.v = 1; /* Now fill in the actual HPTE */ HvCallHpt_addValidate(slot, secondary, &lhpte); iSeries_hunlock(hpte_group); return (secondary << 3) | (slot & 7); }
/* * Create a pte. Used during initialization only. */ static void iSeries_make_pte(unsigned long va, unsigned long pa, int mode) { HPTE local_hpte, rhpte; unsigned long hash, vpn; long slot; vpn = va >> PAGE_SHIFT; hash = hpt_hash(vpn, 0); local_hpte.dw1.dword1 = pa | mode; local_hpte.dw0.dword0 = 0; local_hpte.dw0.dw0.avpn = va >> 23; local_hpte.dw0.dw0.bolted = 1; /* bolted */ local_hpte.dw0.dw0.v = 1; slot = HvCallHpt_findValid(&rhpte, vpn); if (slot < 0) { /* Must find space in primary group */ panic("hash_page: hpte already exists\n"); } HvCallHpt_addValidate(slot, 0, (HPTE *)&local_hpte ); }