1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License, version 2, as 4 * published by the Free Software Foundation. 5 * 6 * This program is distributed in the hope that it will be useful, 7 * but WITHOUT ANY WARRANTY; without even the implied warranty of 8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 9 * GNU General Public License for more details. 10 * 11 * You should have received a copy of the GNU General Public License 12 * along with this program; if not, write to the Free Software 13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 14 * 15 * Copyright IBM Corp. 2008 16 * 17 * Authors: Hollis Blanchard <hollisb@us.ibm.com> 18 */ 19 20 #ifndef __KVM_BOOKE_H__ 21 #define __KVM_BOOKE_H__ 22 23 #include <linux/types.h> 24 #include <linux/kvm_host.h> 25 #include <asm/kvm_ppc.h> 26 #include <asm/switch_to.h> 27 #include "timing.h" 28 29 /* interrupt priortity ordering */ 30 #define BOOKE_IRQPRIO_DATA_STORAGE 0 31 #define BOOKE_IRQPRIO_INST_STORAGE 1 32 #define BOOKE_IRQPRIO_ALIGNMENT 2 33 #define BOOKE_IRQPRIO_PROGRAM 3 34 #define BOOKE_IRQPRIO_FP_UNAVAIL 4 35 #define BOOKE_IRQPRIO_SPE_UNAVAIL 5 36 #define BOOKE_IRQPRIO_SPE_FP_DATA 6 37 #define BOOKE_IRQPRIO_SPE_FP_ROUND 7 38 #define BOOKE_IRQPRIO_SYSCALL 8 39 #define BOOKE_IRQPRIO_AP_UNAVAIL 9 40 #define BOOKE_IRQPRIO_DTLB_MISS 10 41 #define BOOKE_IRQPRIO_ITLB_MISS 11 42 #define BOOKE_IRQPRIO_MACHINE_CHECK 12 43 #define BOOKE_IRQPRIO_DEBUG 13 44 #define BOOKE_IRQPRIO_CRITICAL 14 45 #define BOOKE_IRQPRIO_WATCHDOG 15 46 #define BOOKE_IRQPRIO_EXTERNAL 16 47 #define BOOKE_IRQPRIO_FIT 17 48 #define BOOKE_IRQPRIO_DECREMENTER 18 49 #define BOOKE_IRQPRIO_PERFORMANCE_MONITOR 19 50 /* Internal pseudo-irqprio for level triggered externals */ 51 #define BOOKE_IRQPRIO_EXTERNAL_LEVEL 20 52 #define BOOKE_IRQPRIO_DBELL 21 53 #define BOOKE_IRQPRIO_DBELL_CRIT 22 54 #define BOOKE_IRQPRIO_MAX 23 55 56 #define BOOKE_IRQMASK_EE ((1 << BOOKE_IRQPRIO_EXTERNAL_LEVEL) | \ 57 (1 << BOOKE_IRQPRIO_PERFORMANCE_MONITOR) | \ 58 (1 << BOOKE_IRQPRIO_DBELL) | \ 59 (1 << BOOKE_IRQPRIO_DECREMENTER) | \ 60 (1 << BOOKE_IRQPRIO_FIT) | \ 61 (1 << BOOKE_IRQPRIO_EXTERNAL)) 62 63 #define BOOKE_IRQMASK_CE ((1 << BOOKE_IRQPRIO_DBELL_CRIT) | \ 64 (1 << BOOKE_IRQPRIO_WATCHDOG) | \ 65 (1 << BOOKE_IRQPRIO_CRITICAL)) 66 67 extern unsigned long kvmppc_booke_handlers; 68 extern unsigned long kvmppc_booke_handler_addr[]; 69 70 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr); 71 void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr); 72 73 void kvmppc_set_epcr(struct kvm_vcpu *vcpu, u32 new_epcr); 74 void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr); 75 void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits); 76 void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits); 77 78 int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, 79 unsigned int inst, int *advance); 80 int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 81 int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 82 83 /* low-level asm code to transfer guest state */ 84 void kvmppc_load_guest_spe(struct kvm_vcpu *vcpu); 85 void kvmppc_save_guest_spe(struct kvm_vcpu *vcpu); 86 87 /* high-level function, manages flags, host state */ 88 void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu); 89 90 void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 91 void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu); 92 93 enum int_class { 94 INT_CLASS_NONCRIT, 95 INT_CLASS_CRIT, 96 INT_CLASS_MC, 97 INT_CLASS_DBG, 98 }; 99 100 void kvmppc_set_pending_interrupt(struct kvm_vcpu *vcpu, enum int_class type); 101 102 extern void kvmppc_mmu_destroy_e500(struct kvm_vcpu *vcpu); 103 extern int kvmppc_core_emulate_op_e500(struct kvm_run *run, 104 struct kvm_vcpu *vcpu, 105 unsigned int inst, int *advance); 106 extern int kvmppc_core_emulate_mtspr_e500(struct kvm_vcpu *vcpu, int sprn, 107 ulong spr_val); 108 extern int kvmppc_core_emulate_mfspr_e500(struct kvm_vcpu *vcpu, int sprn, 109 ulong *spr_val); 110 extern void kvmppc_mmu_destroy_e500(struct kvm_vcpu *vcpu); 111 extern int kvmppc_core_emulate_op_e500(struct kvm_run *run, 112 struct kvm_vcpu *vcpu, 113 unsigned int inst, int *advance); 114 extern int kvmppc_core_emulate_mtspr_e500(struct kvm_vcpu *vcpu, int sprn, 115 ulong spr_val); 116 extern int kvmppc_core_emulate_mfspr_e500(struct kvm_vcpu *vcpu, int sprn, 117 ulong *spr_val); 118 119 /* 120 * Load up guest vcpu FP state if it's needed. 121 * It also set the MSR_FP in thread so that host know 122 * we're holding FPU, and then host can help to save 123 * guest vcpu FP state if other threads require to use FPU. 124 * This simulates an FP unavailable fault. 125 * 126 * It requires to be called with preemption disabled. 127 */ 128 static inline void kvmppc_load_guest_fp(struct kvm_vcpu *vcpu) 129 { 130 #ifdef CONFIG_PPC_FPU 131 if (vcpu->fpu_active && !(current->thread.regs->msr & MSR_FP)) { 132 enable_kernel_fp(); 133 load_fp_state(&vcpu->arch.fp); 134 current->thread.fp_save_area = &vcpu->arch.fp; 135 current->thread.regs->msr |= MSR_FP; 136 } 137 #endif 138 } 139 140 /* 141 * Save guest vcpu FP state into thread. 142 * It requires to be called with preemption disabled. 143 */ 144 static inline void kvmppc_save_guest_fp(struct kvm_vcpu *vcpu) 145 { 146 #ifdef CONFIG_PPC_FPU 147 if (vcpu->fpu_active && (current->thread.regs->msr & MSR_FP)) 148 giveup_fpu(current); 149 current->thread.fp_save_area = NULL; 150 #endif 151 } 152 153 static inline void kvmppc_clear_dbsr(void) 154 { 155 mtspr(SPRN_DBSR, mfspr(SPRN_DBSR)); 156 } 157 #endif /* __KVM_BOOKE_H__ */ 158