forked from Minki/linux
18978768d8
Userspace can tell us that it wants to trigger an interrupt. But so far it can't tell us that it wants to stop triggering one. So let's interpret the parameter to the ioctl that we have anyways to tell us if we want to raise or lower the interrupt line. Signed-off-by: Alexander Graf <agraf@suse.de> v2 -> v3: - Add CAP for unset irq Signed-off-by: Avi Kivity <avi@redhat.com>
219 lines
6.8 KiB
C
219 lines
6.8 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright IBM Corp. 2008
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*
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* Authors: Hollis Blanchard <hollisb@us.ibm.com>
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*/
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#ifndef __POWERPC_KVM_PPC_H__
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#define __POWERPC_KVM_PPC_H__
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/* This file exists just so we can dereference kvm_vcpu, avoiding nested header
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* dependencies. */
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#include <linux/mutex.h>
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#include <linux/timer.h>
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#include <linux/types.h>
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#include <linux/kvm_types.h>
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#include <linux/kvm_host.h>
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#ifdef CONFIG_PPC_BOOK3S
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#include <asm/kvm_book3s.h>
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#endif
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enum emulation_result {
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EMULATE_DONE, /* no further processing */
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EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
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EMULATE_DO_DCR, /* kvm_run filled with DCR request */
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EMULATE_FAIL, /* can't emulate this instruction */
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EMULATE_AGAIN, /* something went wrong. go again */
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};
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extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
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extern char kvmppc_handlers_start[];
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extern unsigned long kvmppc_handler_len;
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extern void kvmppc_handler_highmem(void);
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extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
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extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
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unsigned int rt, unsigned int bytes,
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int is_bigendian);
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extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
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unsigned int rt, unsigned int bytes,
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int is_bigendian);
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extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
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u64 val, unsigned int bytes, int is_bigendian);
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extern int kvmppc_emulate_instruction(struct kvm_run *run,
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struct kvm_vcpu *vcpu);
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extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
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extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
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/* Core-specific hooks */
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extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
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unsigned int gtlb_idx);
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extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
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extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
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extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
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extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
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extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
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extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
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gva_t eaddr);
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extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
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extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
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extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
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unsigned int id);
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extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
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extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
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extern int kvmppc_core_check_processor_compat(void);
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extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
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struct kvm_translation *tr);
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extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
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extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
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extern void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu);
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extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
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extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
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extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
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extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
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extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
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struct kvm_interrupt *irq);
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extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
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struct kvm_interrupt *irq);
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extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
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unsigned int op, int *advance);
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extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs);
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extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt);
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extern int kvmppc_booke_init(void);
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extern void kvmppc_booke_exit(void);
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extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
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/*
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* Cuts out inst bits with ordering according to spec.
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* That means the leftmost bit is zero. All given bits are included.
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*/
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static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
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{
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u32 r;
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u32 mask;
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BUG_ON(msb > lsb);
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mask = (1 << (lsb - msb + 1)) - 1;
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r = (inst >> (63 - lsb)) & mask;
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return r;
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}
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/*
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* Replaces inst bits with ordering according to spec.
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*/
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static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
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{
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u32 r;
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u32 mask;
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BUG_ON(msb > lsb);
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mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
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r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
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return r;
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}
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#ifdef CONFIG_PPC_BOOK3S
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/* We assume we're always acting on the current vcpu */
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static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
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{
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if ( num < 14 ) {
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get_paca()->shadow_vcpu.gpr[num] = val;
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to_book3s(vcpu)->shadow_vcpu.gpr[num] = val;
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} else
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vcpu->arch.gpr[num] = val;
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}
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static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
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{
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if ( num < 14 )
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return get_paca()->shadow_vcpu.gpr[num];
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else
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return vcpu->arch.gpr[num];
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}
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static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
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{
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get_paca()->shadow_vcpu.cr = val;
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to_book3s(vcpu)->shadow_vcpu.cr = val;
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}
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static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
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{
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return get_paca()->shadow_vcpu.cr;
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}
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static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
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{
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get_paca()->shadow_vcpu.xer = val;
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to_book3s(vcpu)->shadow_vcpu.xer = val;
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}
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static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
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{
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return get_paca()->shadow_vcpu.xer;
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}
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#else
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static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
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{
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vcpu->arch.gpr[num] = val;
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}
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static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
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{
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return vcpu->arch.gpr[num];
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}
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static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
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{
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vcpu->arch.cr = val;
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}
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static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
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{
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return vcpu->arch.cr;
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}
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static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
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{
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vcpu->arch.xer = val;
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}
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static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
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{
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return vcpu->arch.xer;
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}
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#endif
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#endif /* __POWERPC_KVM_PPC_H__ */
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