| /* |
| * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved. |
| * |
| * Authors: |
| * Alexander Graf <agraf@suse.de> |
| * Kevin Wolf <mail@kevin-wolf.de> |
| * |
| * Description: |
| * This file is derived from arch/powerpc/kvm/44x.c, |
| * by Hollis Blanchard <hollisb@us.ibm.com>. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License, version 2, as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/kvm_host.h> |
| #include <linux/err.h> |
| #include <linux/export.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/miscdevice.h> |
| |
| #include <asm/reg.h> |
| #include <asm/cputable.h> |
| #include <asm/cacheflush.h> |
| #include <asm/tlbflush.h> |
| #include <asm/uaccess.h> |
| #include <asm/io.h> |
| #include <asm/kvm_ppc.h> |
| #include <asm/kvm_book3s.h> |
| #include <asm/mmu_context.h> |
| #include <asm/page.h> |
| #include <linux/gfp.h> |
| #include <linux/sched.h> |
| #include <linux/vmalloc.h> |
| #include <linux/highmem.h> |
| |
| #include "book3s.h" |
| #include "trace.h" |
| |
| #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU |
| |
| /* #define EXIT_DEBUG */ |
| |
| struct kvm_stats_debugfs_item debugfs_entries[] = { |
| { "exits", VCPU_STAT(sum_exits) }, |
| { "mmio", VCPU_STAT(mmio_exits) }, |
| { "sig", VCPU_STAT(signal_exits) }, |
| { "sysc", VCPU_STAT(syscall_exits) }, |
| { "inst_emu", VCPU_STAT(emulated_inst_exits) }, |
| { "dec", VCPU_STAT(dec_exits) }, |
| { "ext_intr", VCPU_STAT(ext_intr_exits) }, |
| { "queue_intr", VCPU_STAT(queue_intr) }, |
| { "halt_wakeup", VCPU_STAT(halt_wakeup) }, |
| { "pf_storage", VCPU_STAT(pf_storage) }, |
| { "sp_storage", VCPU_STAT(sp_storage) }, |
| { "pf_instruc", VCPU_STAT(pf_instruc) }, |
| { "sp_instruc", VCPU_STAT(sp_instruc) }, |
| { "ld", VCPU_STAT(ld) }, |
| { "ld_slow", VCPU_STAT(ld_slow) }, |
| { "st", VCPU_STAT(st) }, |
| { "st_slow", VCPU_STAT(st_slow) }, |
| { NULL } |
| }; |
| |
| void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu) |
| { |
| } |
| |
| void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu) |
| { |
| } |
| |
| static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) |
| { |
| if (!is_kvmppc_hv_enabled(vcpu->kvm)) |
| return to_book3s(vcpu)->hior; |
| return 0; |
| } |
| |
| static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, |
| unsigned long pending_now, unsigned long old_pending) |
| { |
| if (is_kvmppc_hv_enabled(vcpu->kvm)) |
| return; |
| if (pending_now) |
| vcpu->arch.shared->int_pending = 1; |
| else if (old_pending) |
| vcpu->arch.shared->int_pending = 0; |
| } |
| |
| static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) |
| { |
| ulong crit_raw; |
| ulong crit_r1; |
| bool crit; |
| |
| if (is_kvmppc_hv_enabled(vcpu->kvm)) |
| return false; |
| |
| crit_raw = vcpu->arch.shared->critical; |
| crit_r1 = kvmppc_get_gpr(vcpu, 1); |
| |
| /* Truncate crit indicators in 32 bit mode */ |
| if (!(vcpu->arch.shared->msr & MSR_SF)) { |
| crit_raw &= 0xffffffff; |
| crit_r1 &= 0xffffffff; |
| } |
| |
| /* Critical section when crit == r1 */ |
| crit = (crit_raw == crit_r1); |
| /* ... and we're in supervisor mode */ |
| crit = crit && !(vcpu->arch.shared->msr & MSR_PR); |
| |
| return crit; |
| } |
| |
| void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags) |
| { |
| vcpu->arch.shared->srr0 = kvmppc_get_pc(vcpu); |
| vcpu->arch.shared->srr1 = vcpu->arch.shared->msr | flags; |
| kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec); |
| vcpu->arch.mmu.reset_msr(vcpu); |
| } |
| |
| static int kvmppc_book3s_vec2irqprio(unsigned int vec) |
| { |
| unsigned int prio; |
| |
| switch (vec) { |
| case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break; |
| case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break; |
| case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break; |
| case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break; |
| case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break; |
| case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break; |
| case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break; |
| case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break; |
| case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break; |
| case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break; |
| case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break; |
| case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break; |
| case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break; |
| case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break; |
| case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break; |
| case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break; |
| default: prio = BOOK3S_IRQPRIO_MAX; break; |
| } |
| |
| return prio; |
| } |
| |
| void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, |
| unsigned int vec) |
| { |
| unsigned long old_pending = vcpu->arch.pending_exceptions; |
| |
| clear_bit(kvmppc_book3s_vec2irqprio(vec), |
| &vcpu->arch.pending_exceptions); |
| |
| kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions, |
| old_pending); |
| } |
| |
| void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec) |
| { |
| vcpu->stat.queue_intr++; |
| |
| set_bit(kvmppc_book3s_vec2irqprio(vec), |
| &vcpu->arch.pending_exceptions); |
| #ifdef EXIT_DEBUG |
| printk(KERN_INFO "Queueing interrupt %x\n", vec); |
| #endif |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio); |
| |
| void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags) |
| { |
| /* might as well deliver this straight away */ |
| kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags); |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_core_queue_program); |
| |
| void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu) |
| { |
| kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec); |
| |
| int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu) |
| { |
| return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec); |
| |
| void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) |
| { |
| kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec); |
| |
| void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, |
| struct kvm_interrupt *irq) |
| { |
| unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL; |
| |
| if (irq->irq == KVM_INTERRUPT_SET_LEVEL) |
| vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL; |
| |
| kvmppc_book3s_queue_irqprio(vcpu, vec); |
| } |
| |
| void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu) |
| { |
| kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); |
| kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL); |
| } |
| |
| int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority) |
| { |
| int deliver = 1; |
| int vec = 0; |
| bool crit = kvmppc_critical_section(vcpu); |
| |
| switch (priority) { |
| case BOOK3S_IRQPRIO_DECREMENTER: |
| deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit; |
| vec = BOOK3S_INTERRUPT_DECREMENTER; |
| break; |
| case BOOK3S_IRQPRIO_EXTERNAL: |
| case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: |
| deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit; |
| vec = BOOK3S_INTERRUPT_EXTERNAL; |
| break; |
| case BOOK3S_IRQPRIO_SYSTEM_RESET: |
| vec = BOOK3S_INTERRUPT_SYSTEM_RESET; |
| break; |
| case BOOK3S_IRQPRIO_MACHINE_CHECK: |
| vec = BOOK3S_INTERRUPT_MACHINE_CHECK; |
| break; |
| case BOOK3S_IRQPRIO_DATA_STORAGE: |
| vec = BOOK3S_INTERRUPT_DATA_STORAGE; |
| break; |
| case BOOK3S_IRQPRIO_INST_STORAGE: |
| vec = BOOK3S_INTERRUPT_INST_STORAGE; |
| break; |
| case BOOK3S_IRQPRIO_DATA_SEGMENT: |
| vec = BOOK3S_INTERRUPT_DATA_SEGMENT; |
| break; |
| case BOOK3S_IRQPRIO_INST_SEGMENT: |
| vec = BOOK3S_INTERRUPT_INST_SEGMENT; |
| break; |
| case BOOK3S_IRQPRIO_ALIGNMENT: |
| vec = BOOK3S_INTERRUPT_ALIGNMENT; |
| break; |
| case BOOK3S_IRQPRIO_PROGRAM: |
| vec = BOOK3S_INTERRUPT_PROGRAM; |
| break; |
| case BOOK3S_IRQPRIO_VSX: |
| vec = BOOK3S_INTERRUPT_VSX; |
| break; |
| case BOOK3S_IRQPRIO_ALTIVEC: |
| vec = BOOK3S_INTERRUPT_ALTIVEC; |
| break; |
| case BOOK3S_IRQPRIO_FP_UNAVAIL: |
| vec = BOOK3S_INTERRUPT_FP_UNAVAIL; |
| break; |
| case BOOK3S_IRQPRIO_SYSCALL: |
| vec = BOOK3S_INTERRUPT_SYSCALL; |
| break; |
| case BOOK3S_IRQPRIO_DEBUG: |
| vec = BOOK3S_INTERRUPT_TRACE; |
| break; |
| case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR: |
| vec = BOOK3S_INTERRUPT_PERFMON; |
| break; |
| default: |
| deliver = 0; |
| printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority); |
| break; |
| } |
| |
| #if 0 |
| printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver); |
| #endif |
| |
| if (deliver) |
| kvmppc_inject_interrupt(vcpu, vec, 0); |
| |
| return deliver; |
| } |
| |
| /* |
| * This function determines if an irqprio should be cleared once issued. |
| */ |
| static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority) |
| { |
| switch (priority) { |
| case BOOK3S_IRQPRIO_DECREMENTER: |
| /* DEC interrupts get cleared by mtdec */ |
| return false; |
| case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: |
| /* External interrupts get cleared by userspace */ |
| return false; |
| } |
| |
| return true; |
| } |
| |
| int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu) |
| { |
| unsigned long *pending = &vcpu->arch.pending_exceptions; |
| unsigned long old_pending = vcpu->arch.pending_exceptions; |
| unsigned int priority; |
| |
| #ifdef EXIT_DEBUG |
| if (vcpu->arch.pending_exceptions) |
| printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions); |
| #endif |
| priority = __ffs(*pending); |
| while (priority < BOOK3S_IRQPRIO_MAX) { |
| if (kvmppc_book3s_irqprio_deliver(vcpu, priority) && |
| clear_irqprio(vcpu, priority)) { |
| clear_bit(priority, &vcpu->arch.pending_exceptions); |
| break; |
| } |
| |
| priority = find_next_bit(pending, |
| BITS_PER_BYTE * sizeof(*pending), |
| priority + 1); |
| } |
| |
| /* Tell the guest about our interrupt status */ |
| kvmppc_update_int_pending(vcpu, *pending, old_pending); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter); |
| |
| pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing, |
| bool *writable) |
| { |
| ulong mp_pa = vcpu->arch.magic_page_pa; |
| |
| if (!(vcpu->arch.shared->msr & MSR_SF)) |
| mp_pa = (uint32_t)mp_pa; |
| |
| /* Magic page override */ |
| if (unlikely(mp_pa) && |
| unlikely(((gfn << PAGE_SHIFT) & KVM_PAM) == |
| ((mp_pa & PAGE_MASK) & KVM_PAM))) { |
| ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; |
| pfn_t pfn; |
| |
| pfn = (pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT; |
| get_page(pfn_to_page(pfn)); |
| if (writable) |
| *writable = true; |
| return pfn; |
| } |
| |
| return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable); |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_gfn_to_pfn); |
| |
| static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data, |
| bool iswrite, struct kvmppc_pte *pte) |
| { |
| int relocated = (vcpu->arch.shared->msr & (data ? MSR_DR : MSR_IR)); |
| int r; |
| |
| if (relocated) { |
| r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite); |
| } else { |
| pte->eaddr = eaddr; |
| pte->raddr = eaddr & KVM_PAM; |
| pte->vpage = VSID_REAL | eaddr >> 12; |
| pte->may_read = true; |
| pte->may_write = true; |
| pte->may_execute = true; |
| r = 0; |
| } |
| |
| return r; |
| } |
| |
| static hva_t kvmppc_bad_hva(void) |
| { |
| return PAGE_OFFSET; |
| } |
| |
| static hva_t kvmppc_pte_to_hva(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte, |
| bool read) |
| { |
| hva_t hpage; |
| |
| if (read && !pte->may_read) |
| goto err; |
| |
| if (!read && !pte->may_write) |
| goto err; |
| |
| hpage = gfn_to_hva(vcpu->kvm, pte->raddr >> PAGE_SHIFT); |
| if (kvm_is_error_hva(hpage)) |
| goto err; |
| |
| return hpage | (pte->raddr & ~PAGE_MASK); |
| err: |
| return kvmppc_bad_hva(); |
| } |
| |
| int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, |
| bool data) |
| { |
| struct kvmppc_pte pte; |
| |
| vcpu->stat.st++; |
| |
| if (kvmppc_xlate(vcpu, *eaddr, data, true, &pte)) |
| return -ENOENT; |
| |
| *eaddr = pte.raddr; |
| |
| if (!pte.may_write) |
| return -EPERM; |
| |
| if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size)) |
| return EMULATE_DO_MMIO; |
| |
| return EMULATE_DONE; |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_st); |
| |
| int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, |
| bool data) |
| { |
| struct kvmppc_pte pte; |
| hva_t hva = *eaddr; |
| |
| vcpu->stat.ld++; |
| |
| if (kvmppc_xlate(vcpu, *eaddr, data, false, &pte)) |
| goto nopte; |
| |
| *eaddr = pte.raddr; |
| |
| hva = kvmppc_pte_to_hva(vcpu, &pte, true); |
| if (kvm_is_error_hva(hva)) |
| goto mmio; |
| |
| if (copy_from_user(ptr, (void __user *)hva, size)) { |
| printk(KERN_INFO "kvmppc_ld at 0x%lx failed\n", hva); |
| goto mmio; |
| } |
| |
| return EMULATE_DONE; |
| |
| nopte: |
| return -ENOENT; |
| mmio: |
| return EMULATE_DO_MMIO; |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_ld); |
| |
| int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) |
| { |
| return 0; |
| } |
| |
| int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu) |
| { |
| return 0; |
| } |
| |
| void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu) |
| { |
| } |
| |
| int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, |
| struct kvm_sregs *sregs) |
| { |
| return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs); |
| } |
| |
| int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, |
| struct kvm_sregs *sregs) |
| { |
| return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs); |
| } |
| |
| int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) |
| { |
| int i; |
| |
| regs->pc = kvmppc_get_pc(vcpu); |
| regs->cr = kvmppc_get_cr(vcpu); |
| regs->ctr = kvmppc_get_ctr(vcpu); |
| regs->lr = kvmppc_get_lr(vcpu); |
| regs->xer = kvmppc_get_xer(vcpu); |
| regs->msr = vcpu->arch.shared->msr; |
| regs->srr0 = vcpu->arch.shared->srr0; |
| regs->srr1 = vcpu->arch.shared->srr1; |
| regs->pid = vcpu->arch.pid; |
| regs->sprg0 = vcpu->arch.shared->sprg0; |
| regs->sprg1 = vcpu->arch.shared->sprg1; |
| regs->sprg2 = vcpu->arch.shared->sprg2; |
| regs->sprg3 = vcpu->arch.shared->sprg3; |
| regs->sprg4 = vcpu->arch.shared->sprg4; |
| regs->sprg5 = vcpu->arch.shared->sprg5; |
| regs->sprg6 = vcpu->arch.shared->sprg6; |
| regs->sprg7 = vcpu->arch.shared->sprg7; |
| |
| for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) |
| regs->gpr[i] = kvmppc_get_gpr(vcpu, i); |
| |
| return 0; |
| } |
| |
| int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) |
| { |
| int i; |
| |
| kvmppc_set_pc(vcpu, regs->pc); |
| kvmppc_set_cr(vcpu, regs->cr); |
| kvmppc_set_ctr(vcpu, regs->ctr); |
| kvmppc_set_lr(vcpu, regs->lr); |
| kvmppc_set_xer(vcpu, regs->xer); |
| kvmppc_set_msr(vcpu, regs->msr); |
| vcpu->arch.shared->srr0 = regs->srr0; |
| vcpu->arch.shared->srr1 = regs->srr1; |
| vcpu->arch.shared->sprg0 = regs->sprg0; |
| vcpu->arch.shared->sprg1 = regs->sprg1; |
| vcpu->arch.shared->sprg2 = regs->sprg2; |
| vcpu->arch.shared->sprg3 = regs->sprg3; |
| vcpu->arch.shared->sprg4 = regs->sprg4; |
| vcpu->arch.shared->sprg5 = regs->sprg5; |
| vcpu->arch.shared->sprg6 = regs->sprg6; |
| vcpu->arch.shared->sprg7 = regs->sprg7; |
| |
| for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) |
| kvmppc_set_gpr(vcpu, i, regs->gpr[i]); |
| |
| return 0; |
| } |
| |
| int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) |
| { |
| return -ENOTSUPP; |
| } |
| |
| int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) |
| { |
| return -ENOTSUPP; |
| } |
| |
| int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) |
| { |
| int r; |
| union kvmppc_one_reg val; |
| int size; |
| long int i; |
| |
| size = one_reg_size(reg->id); |
| if (size > sizeof(val)) |
| return -EINVAL; |
| |
| r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, reg->id, &val); |
| if (r == -EINVAL) { |
| r = 0; |
| switch (reg->id) { |
| case KVM_REG_PPC_DAR: |
| val = get_reg_val(reg->id, vcpu->arch.shared->dar); |
| break; |
| case KVM_REG_PPC_DSISR: |
| val = get_reg_val(reg->id, vcpu->arch.shared->dsisr); |
| break; |
| case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: |
| i = reg->id - KVM_REG_PPC_FPR0; |
| val = get_reg_val(reg->id, VCPU_FPR(vcpu, i)); |
| break; |
| case KVM_REG_PPC_FPSCR: |
| val = get_reg_val(reg->id, vcpu->arch.fp.fpscr); |
| break; |
| #ifdef CONFIG_ALTIVEC |
| case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31: |
| if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { |
| r = -ENXIO; |
| break; |
| } |
| val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0]; |
| break; |
| case KVM_REG_PPC_VSCR: |
| if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { |
| r = -ENXIO; |
| break; |
| } |
| val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]); |
| break; |
| case KVM_REG_PPC_VRSAVE: |
| val = get_reg_val(reg->id, vcpu->arch.vrsave); |
| break; |
| #endif /* CONFIG_ALTIVEC */ |
| #ifdef CONFIG_VSX |
| case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: |
| if (cpu_has_feature(CPU_FTR_VSX)) { |
| long int i = reg->id - KVM_REG_PPC_VSR0; |
| val.vsxval[0] = vcpu->arch.fp.fpr[i][0]; |
| val.vsxval[1] = vcpu->arch.fp.fpr[i][1]; |
| } else { |
| r = -ENXIO; |
| } |
| break; |
| #endif /* CONFIG_VSX */ |
| case KVM_REG_PPC_DEBUG_INST: { |
| u32 opcode = INS_TW; |
| r = copy_to_user((u32 __user *)(long)reg->addr, |
| &opcode, sizeof(u32)); |
| break; |
| } |
| #ifdef CONFIG_KVM_XICS |
| case KVM_REG_PPC_ICP_STATE: |
| if (!vcpu->arch.icp) { |
| r = -ENXIO; |
| break; |
| } |
| val = get_reg_val(reg->id, kvmppc_xics_get_icp(vcpu)); |
| break; |
| #endif /* CONFIG_KVM_XICS */ |
| default: |
| r = -EINVAL; |
| break; |
| } |
| } |
| if (r) |
| return r; |
| |
| if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size)) |
| r = -EFAULT; |
| |
| return r; |
| } |
| |
| int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) |
| { |
| int r; |
| union kvmppc_one_reg val; |
| int size; |
| long int i; |
| |
| size = one_reg_size(reg->id); |
| if (size > sizeof(val)) |
| return -EINVAL; |
| |
| if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size)) |
| return -EFAULT; |
| |
| r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, reg->id, &val); |
| if (r == -EINVAL) { |
| r = 0; |
| switch (reg->id) { |
| case KVM_REG_PPC_DAR: |
| vcpu->arch.shared->dar = set_reg_val(reg->id, val); |
| break; |
| case KVM_REG_PPC_DSISR: |
| vcpu->arch.shared->dsisr = set_reg_val(reg->id, val); |
| break; |
| case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: |
| i = reg->id - KVM_REG_PPC_FPR0; |
| VCPU_FPR(vcpu, i) = set_reg_val(reg->id, val); |
| break; |
| case KVM_REG_PPC_FPSCR: |
| vcpu->arch.fp.fpscr = set_reg_val(reg->id, val); |
| break; |
| #ifdef CONFIG_ALTIVEC |
| case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31: |
| if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { |
| r = -ENXIO; |
| break; |
| } |
| vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval; |
| break; |
| case KVM_REG_PPC_VSCR: |
| if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { |
| r = -ENXIO; |
| break; |
| } |
| vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val); |
| break; |
| case KVM_REG_PPC_VRSAVE: |
| if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { |
| r = -ENXIO; |
| break; |
| } |
| vcpu->arch.vrsave = set_reg_val(reg->id, val); |
| break; |
| #endif /* CONFIG_ALTIVEC */ |
| #ifdef CONFIG_VSX |
| case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: |
| if (cpu_has_feature(CPU_FTR_VSX)) { |
| long int i = reg->id - KVM_REG_PPC_VSR0; |
| vcpu->arch.fp.fpr[i][0] = val.vsxval[0]; |
| vcpu->arch.fp.fpr[i][1] = val.vsxval[1]; |
| } else { |
| r = -ENXIO; |
| } |
| break; |
| #endif /* CONFIG_VSX */ |
| #ifdef CONFIG_KVM_XICS |
| case KVM_REG_PPC_ICP_STATE: |
| if (!vcpu->arch.icp) { |
| r = -ENXIO; |
| break; |
| } |
| r = kvmppc_xics_set_icp(vcpu, |
| set_reg_val(reg->id, val)); |
| break; |
| #endif /* CONFIG_KVM_XICS */ |
| default: |
| r = -EINVAL; |
| break; |
| } |
| } |
| |
| return r; |
| } |
| |
| void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
| { |
| vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu); |
| } |
| |
| void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) |
| { |
| vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu); |
| } |
| |
| void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr) |
| { |
| vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr); |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_set_msr); |
| |
| int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) |
| { |
| return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu); |
| } |
| |
| int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
| struct kvm_translation *tr) |
| { |
| return 0; |
| } |
| |
| int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
| struct kvm_guest_debug *dbg) |
| { |
| return -EINVAL; |
| } |
| |
| void kvmppc_decrementer_func(unsigned long data) |
| { |
| struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; |
| |
| kvmppc_core_queue_dec(vcpu); |
| kvm_vcpu_kick(vcpu); |
| } |
| |
| struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) |
| { |
| return kvm->arch.kvm_ops->vcpu_create(kvm, id); |
| } |
| |
| void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) |
| { |
| vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu); |
| } |
| |
| int kvmppc_core_check_requests(struct kvm_vcpu *vcpu) |
| { |
| return vcpu->kvm->arch.kvm_ops->check_requests(vcpu); |
| } |
| |
| int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) |
| { |
| return kvm->arch.kvm_ops->get_dirty_log(kvm, log); |
| } |
| |
| void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
| struct kvm_memory_slot *dont) |
| { |
| kvm->arch.kvm_ops->free_memslot(free, dont); |
| } |
| |
| int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
| unsigned long npages) |
| { |
| return kvm->arch.kvm_ops->create_memslot(slot, npages); |
| } |
| |
| void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot) |
| { |
| kvm->arch.kvm_ops->flush_memslot(kvm, memslot); |
| } |
| |
| int kvmppc_core_prepare_memory_region(struct kvm *kvm, |
| struct kvm_memory_slot *memslot, |
| struct kvm_userspace_memory_region *mem) |
| { |
| return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem); |
| } |
| |
| void kvmppc_core_commit_memory_region(struct kvm *kvm, |
| struct kvm_userspace_memory_region *mem, |
| const struct kvm_memory_slot *old) |
| { |
| kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old); |
| } |
| |
| int kvm_unmap_hva(struct kvm *kvm, unsigned long hva) |
| { |
| return kvm->arch.kvm_ops->unmap_hva(kvm, hva); |
| } |
| EXPORT_SYMBOL_GPL(kvm_unmap_hva); |
| |
| int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end) |
| { |
| return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end); |
| } |
| |
| int kvm_age_hva(struct kvm *kvm, unsigned long hva) |
| { |
| return kvm->arch.kvm_ops->age_hva(kvm, hva); |
| } |
| |
| int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) |
| { |
| return kvm->arch.kvm_ops->test_age_hva(kvm, hva); |
| } |
| |
| void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) |
| { |
| kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte); |
| } |
| |
| void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) |
| { |
| vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu); |
| } |
| |
| int kvmppc_core_init_vm(struct kvm *kvm) |
| { |
| |
| #ifdef CONFIG_PPC64 |
| INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables); |
| INIT_LIST_HEAD(&kvm->arch.rtas_tokens); |
| #endif |
| |
| return kvm->arch.kvm_ops->init_vm(kvm); |
| } |
| |
| void kvmppc_core_destroy_vm(struct kvm *kvm) |
| { |
| kvm->arch.kvm_ops->destroy_vm(kvm); |
| |
| #ifdef CONFIG_PPC64 |
| kvmppc_rtas_tokens_free(kvm); |
| WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); |
| #endif |
| } |
| |
| int kvmppc_core_check_processor_compat(void) |
| { |
| /* |
| * We always return 0 for book3s. We check |
| * for compatability while loading the HV |
| * or PR module |
| */ |
| return 0; |
| } |
| |
| static int kvmppc_book3s_init(void) |
| { |
| int r; |
| |
| r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); |
| if (r) |
| return r; |
| #ifdef CONFIG_KVM_BOOK3S_32_HANDLER |
| r = kvmppc_book3s_init_pr(); |
| #endif |
| return r; |
| |
| } |
| |
| static void kvmppc_book3s_exit(void) |
| { |
| #ifdef CONFIG_KVM_BOOK3S_32_HANDLER |
| kvmppc_book3s_exit_pr(); |
| #endif |
| kvm_exit(); |
| } |
| |
| module_init(kvmppc_book3s_init); |
| module_exit(kvmppc_book3s_exit); |
| |
| /* On 32bit this is our one and only kernel module */ |
| #ifdef CONFIG_KVM_BOOK3S_32_HANDLER |
| MODULE_ALIAS_MISCDEV(KVM_MINOR); |
| MODULE_ALIAS("devname:kvm"); |
| #endif |
