1 /* 2 * PowerPC ISAV3 BookS emulation generic mmu definitions 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 2.1 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 #ifndef PPC_MMU_BOOK3S_V3_H 21 #define PPC_MMU_BOOK3S_V3_H 22 23 #include "mmu-hash64.h" 24 #include "mmu-books.h" 25 26 #ifndef CONFIG_USER_ONLY 27 28 /* 29 * Partition table definitions 30 */ 31 #define PTCR_PATB 0x0FFFFFFFFFFFF000ULL /* Partition Table Base */ 32 #define PTCR_PATS 0x000000000000001FULL /* Partition Table Size */ 33 34 /* Partition Table Entry Fields */ 35 #define PATE0_HR 0x8000000000000000 36 37 /* 38 * WARNING: This field doesn't actually exist in the final version of 39 * the architecture and is unused by hardware. However, qemu uses it 40 * as an indication of a radix guest in the pseudo-PATB entry that it 41 * maintains for SPAPR guests and in the migration stream, so we need 42 * to keep it around 43 */ 44 #define PATE1_GR 0x8000000000000000 45 46 /* Process Table Entry */ 47 struct prtb_entry { 48 uint64_t prtbe0, prtbe1; 49 }; 50 51 #ifdef TARGET_PPC64 52 53 /* 54 * tlbie[l] helper flags 55 * 56 * RIC, PRS, R and local are passed as flags in the last argument. 57 */ 58 #define TLBIE_F_RIC_SHIFT 0 59 #define TLBIE_F_PRS_SHIFT 2 60 #define TLBIE_F_R_SHIFT 3 61 #define TLBIE_F_LOCAL_SHIFT 4 62 63 #define TLBIE_F_RIC_MASK (3 << TLBIE_F_RIC_SHIFT) 64 #define TLBIE_F_PRS (1 << TLBIE_F_PRS_SHIFT) 65 #define TLBIE_F_R (1 << TLBIE_F_R_SHIFT) 66 #define TLBIE_F_LOCAL (1 << TLBIE_F_LOCAL_SHIFT) 67 68 static inline bool ppc64_use_proc_tbl(PowerPCCPU *cpu) 69 { 70 return !!(cpu->env.spr[SPR_LPCR] & LPCR_UPRT); 71 } 72 73 bool ppc64_v3_get_pate(PowerPCCPU *cpu, target_ulong lpid, 74 ppc_v3_pate_t *entry); 75 76 /* 77 * The LPCR:HR bit is a shortcut that avoids having to 78 * dig out the partition table in the fast path. This is 79 * also how the HW uses it. 80 */ 81 static inline bool ppc64_v3_radix(PowerPCCPU *cpu) 82 { 83 return !!(cpu->env.spr[SPR_LPCR] & LPCR_HR); 84 } 85 86 static inline hwaddr ppc_hash64_hpt_base(PowerPCCPU *cpu) 87 { 88 uint64_t base; 89 90 if (cpu->vhyp) { 91 return 0; 92 } 93 if (cpu->env.mmu_model == POWERPC_MMU_3_00) { 94 ppc_v3_pate_t pate; 95 96 if (!ppc64_v3_get_pate(cpu, cpu->env.spr[SPR_LPIDR], &pate)) { 97 return 0; 98 } 99 base = pate.dw0; 100 } else { 101 base = cpu->env.spr[SPR_SDR1]; 102 } 103 return base & SDR_64_HTABORG; 104 } 105 106 static inline hwaddr ppc_hash64_hpt_mask(PowerPCCPU *cpu) 107 { 108 uint64_t base; 109 110 if (cpu->vhyp) { 111 return cpu->vhyp_class->hpt_mask(cpu->vhyp); 112 } 113 if (cpu->env.mmu_model == POWERPC_MMU_3_00) { 114 ppc_v3_pate_t pate; 115 116 if (!ppc64_v3_get_pate(cpu, cpu->env.spr[SPR_LPIDR], &pate)) { 117 return 0; 118 } 119 base = pate.dw0; 120 } else { 121 base = cpu->env.spr[SPR_SDR1]; 122 } 123 return (1ULL << ((base & SDR_64_HTABSIZE) + 18 - 7)) - 1; 124 } 125 126 #endif /* TARGET_PPC64 */ 127 128 #endif /* CONFIG_USER_ONLY */ 129 130 #endif /* PPC_MMU_BOOK3S_V3_H */ 131