Linux 3.17-rc2
[linux/fpc-iii.git] / arch / powerpc / kvm / booke.h
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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.
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.
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.
15 * Copyright IBM Corp. 2008
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
20 #ifndef __KVM_BOOKE_H__
21 #define __KVM_BOOKE_H__
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"
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
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))
63 #define BOOKE_IRQMASK_CE ((1 << BOOKE_IRQPRIO_DBELL_CRIT) | \
64 (1 << BOOKE_IRQPRIO_WATCHDOG) | \
65 (1 << BOOKE_IRQPRIO_CRITICAL))
67 extern unsigned long kvmppc_booke_handlers;
68 extern unsigned long kvmppc_booke_handler_addr[];
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);
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);
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);
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);
87 /* high-level function, manages flags, host state */
88 void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu);
90 void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
91 void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu);
93 enum int_class {
94 INT_CLASS_NONCRIT,
95 INT_CLASS_CRIT,
96 INT_CLASS_MC,
97 INT_CLASS_DBG,
100 void kvmppc_set_pending_interrupt(struct kvm_vcpu *vcpu, enum int_class type);
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);
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.
126 * It requires to be called with preemption disabled.
128 static inline void kvmppc_load_guest_fp(struct kvm_vcpu *vcpu)
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;
137 #endif
141 * Save guest vcpu FP state into thread.
142 * It requires to be called with preemption disabled.
144 static inline void kvmppc_save_guest_fp(struct kvm_vcpu *vcpu)
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
153 static inline void kvmppc_clear_dbsr(void)
155 mtspr(SPRN_DBSR, mfspr(SPRN_DBSR));
157 #endif /* __KVM_BOOKE_H__ */