1 /* 2 * PowerPC ISAV3 BookS emulation generic mmu helpers for qemu. 3 * 4 * Copyright (c) 2017 Suraj Jitindar Singh, IBM Corporation 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #include "qemu/osdep.h" 21 #include "cpu.h" 22 #include "mmu-hash64.h" 23 #include "mmu-book3s-v3.h" 24 #include "mmu-radix64.h" 25 26 int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx, 27 int mmu_idx) 28 { 29 if (ppc64_v3_radix(cpu)) { /* Guest uses radix */ 30 return ppc_radix64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx); 31 } else { /* Guest uses hash */ 32 return ppc_hash64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx); 33 } 34 } 35 36 hwaddr ppc64_v3_get_phys_page_debug(PowerPCCPU *cpu, vaddr eaddr) 37 { 38 if (ppc64_v3_radix(cpu)) { 39 return ppc_radix64_get_phys_page_debug(cpu, eaddr); 40 } else { 41 return ppc_hash64_get_phys_page_debug(cpu, eaddr); 42 } 43 } 44 45 bool ppc64_v3_get_pate(PowerPCCPU *cpu, target_ulong lpid, ppc_v3_pate_t *entry) 46 { 47 uint64_t patb = cpu->env.spr[SPR_PTCR] & PTCR_PATB; 48 uint64_t pats = cpu->env.spr[SPR_PTCR] & PTCR_PATS; 49 50 /* Calculate number of entries */ 51 pats = 1ull << (pats + 12 - 4); 52 if (pats <= lpid) { 53 return false; 54 } 55 56 /* Grab entry */ 57 patb += 16 * lpid; 58 entry->dw0 = ldq_phys(CPU(cpu)->as, patb); 59 entry->dw1 = ldq_phys(CPU(cpu)->as, patb + 8); 60 return true; 61 } 62