diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s.c | 1101 |
1 files changed, 1101 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c new file mode 100644 index 000000000..6d525285d --- /dev/null +++ b/arch/powerpc/kvm/book3s.c @@ -0,0 +1,1101 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * 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>. + */ + +#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 <linux/gfp.h> +#include <linux/sched.h> +#include <linux/vmalloc.h> +#include <linux/highmem.h> + +#include <asm/reg.h> +#include <asm/cputable.h> +#include <asm/cacheflush.h> +#include <linux/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 <asm/xive.h> + +#include "book3s.h" +#include "trace.h" + +/* #define EXIT_DEBUG */ + +const struct _kvm_stats_desc kvm_vm_stats_desc[] = { + KVM_GENERIC_VM_STATS(), + STATS_DESC_ICOUNTER(VM, num_2M_pages), + STATS_DESC_ICOUNTER(VM, num_1G_pages) +}; + +const struct kvm_stats_header kvm_vm_stats_header = { + .name_size = KVM_STATS_NAME_SIZE, + .num_desc = ARRAY_SIZE(kvm_vm_stats_desc), + .id_offset = sizeof(struct kvm_stats_header), + .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE, + .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE + + sizeof(kvm_vm_stats_desc), +}; + +const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { + KVM_GENERIC_VCPU_STATS(), + STATS_DESC_COUNTER(VCPU, sum_exits), + STATS_DESC_COUNTER(VCPU, mmio_exits), + STATS_DESC_COUNTER(VCPU, signal_exits), + STATS_DESC_COUNTER(VCPU, light_exits), + STATS_DESC_COUNTER(VCPU, itlb_real_miss_exits), + STATS_DESC_COUNTER(VCPU, itlb_virt_miss_exits), + STATS_DESC_COUNTER(VCPU, dtlb_real_miss_exits), + STATS_DESC_COUNTER(VCPU, dtlb_virt_miss_exits), + STATS_DESC_COUNTER(VCPU, syscall_exits), + STATS_DESC_COUNTER(VCPU, isi_exits), + STATS_DESC_COUNTER(VCPU, dsi_exits), + STATS_DESC_COUNTER(VCPU, emulated_inst_exits), + STATS_DESC_COUNTER(VCPU, dec_exits), + STATS_DESC_COUNTER(VCPU, ext_intr_exits), + STATS_DESC_COUNTER(VCPU, halt_successful_wait), + STATS_DESC_COUNTER(VCPU, dbell_exits), + STATS_DESC_COUNTER(VCPU, gdbell_exits), + STATS_DESC_COUNTER(VCPU, ld), + STATS_DESC_COUNTER(VCPU, st), + STATS_DESC_COUNTER(VCPU, pf_storage), + STATS_DESC_COUNTER(VCPU, pf_instruc), + STATS_DESC_COUNTER(VCPU, sp_storage), + STATS_DESC_COUNTER(VCPU, sp_instruc), + STATS_DESC_COUNTER(VCPU, queue_intr), + STATS_DESC_COUNTER(VCPU, ld_slow), + STATS_DESC_COUNTER(VCPU, st_slow), + STATS_DESC_COUNTER(VCPU, pthru_all), + STATS_DESC_COUNTER(VCPU, pthru_host), + STATS_DESC_COUNTER(VCPU, pthru_bad_aff) +}; + +const struct kvm_stats_header kvm_vcpu_stats_header = { + .name_size = KVM_STATS_NAME_SIZE, + .num_desc = ARRAY_SIZE(kvm_vcpu_stats_desc), + .id_offset = sizeof(struct kvm_stats_header), + .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE, + .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE + + sizeof(kvm_vcpu_stats_desc), +}; + +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) + kvmppc_set_int_pending(vcpu, 1); + else if (old_pending) + kvmppc_set_int_pending(vcpu, 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 = kvmppc_get_critical(vcpu); + crit_r1 = kvmppc_get_gpr(vcpu, 1); + + /* Truncate crit indicators in 32 bit mode */ + if (!(kvmppc_get_msr(vcpu) & 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 && !(kvmppc_get_msr(vcpu) & MSR_PR); + + return crit; +} + +void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags) +{ + vcpu->kvm->arch.kvm_ops->inject_interrupt(vcpu, vec, flags); +} + +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 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; + case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; 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_machine_check(struct kvm_vcpu *vcpu, ulong flags) +{ + /* might as well deliver this straight away */ + kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_MACHINE_CHECK, flags); +} +EXPORT_SYMBOL_GPL(kvmppc_core_queue_machine_check); + +void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu) +{ + kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_SYSCALL, 0); +} +EXPORT_SYMBOL(kvmppc_core_queue_syscall); + +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_fpunavail(struct kvm_vcpu *vcpu) +{ + /* might as well deliver this straight away */ + kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, 0); +} + +void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu) +{ + /* might as well deliver this straight away */ + kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, 0); +} + +void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu) +{ + /* might as well deliver this straight away */ + kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, 0); +} + +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) +{ + /* + * This case (KVM_INTERRUPT_SET) should never actually arise for + * a pseries guest (because pseries guests expect their interrupt + * controllers to continue asserting an external interrupt request + * until it is acknowledged at the interrupt controller), but is + * included to avoid ABI breakage and potentially for other + * sorts of guest. + * + * There is a subtlety here: HV KVM does not test the + * external_oneshot flag in the code that synthesizes + * external interrupts for the guest just before entering + * the guest. That is OK even if userspace did do a + * KVM_INTERRUPT_SET on a pseries guest vcpu, because the + * caller (kvm_vcpu_ioctl_interrupt) does a kvm_vcpu_kick() + * which ends up doing a smp_send_reschedule(), which will + * pull the guest all the way out to the host, meaning that + * we will call kvmppc_core_prepare_to_enter() before entering + * the guest again, and that will handle the external_oneshot + * flag correctly. + */ + if (irq->irq == KVM_INTERRUPT_SET) + vcpu->arch.external_oneshot = 1; + + kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); +} + +void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu) +{ + kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); +} + +void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar, + ulong flags) +{ + kvmppc_set_dar(vcpu, dar); + kvmppc_set_dsisr(vcpu, flags); + kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE, 0); +} +EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage); + +void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags) +{ + kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_INST_STORAGE, flags); +} +EXPORT_SYMBOL_GPL(kvmppc_core_queue_inst_storage); + +static 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 = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; + vec = BOOK3S_INTERRUPT_DECREMENTER; + break; + case BOOK3S_IRQPRIO_EXTERNAL: + deliver = (kvmppc_get_msr(vcpu) & 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; + case BOOK3S_IRQPRIO_FAC_UNAVAIL: + vec = BOOK3S_INTERRUPT_FAC_UNAVAIL; + 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: + /* + * External interrupts get cleared by userspace + * except when set by the KVM_INTERRUPT ioctl with + * KVM_INTERRUPT_SET (not KVM_INTERRUPT_SET_LEVEL). + */ + if (vcpu->arch.external_oneshot) { + vcpu->arch.external_oneshot = 0; + return true; + } + 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); + +kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing, + bool *writable) +{ + ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM; + gfn_t gfn = gpa >> PAGE_SHIFT; + + if (!(kvmppc_get_msr(vcpu) & MSR_SF)) + mp_pa = (uint32_t)mp_pa; + + /* Magic page override */ + gpa &= ~0xFFFULL; + if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) { + ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; + kvm_pfn_t pfn; + + pfn = (kvm_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_gpa_to_pfn); + +int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid, + enum xlate_readwrite xlrw, struct kvmppc_pte *pte) +{ + bool data = (xlid == XLATE_DATA); + bool iswrite = (xlrw == XLATE_WRITE); + int relocated = (kvmppc_get_msr(vcpu) & (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; + + if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR && + !data) { + if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) && + ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)) + pte->raddr &= ~SPLIT_HACK_MASK; + } + } + + return r; +} + +int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, + enum instruction_fetch_type type, u32 *inst) +{ + ulong pc = kvmppc_get_pc(vcpu); + int r; + + if (type == INST_SC) + pc -= 4; + + r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false); + if (r == EMULATE_DONE) + return r; + else + return EMULATE_AGAIN; +} +EXPORT_SYMBOL_GPL(kvmppc_load_last_inst); + +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) +{ + int ret; + + vcpu_load(vcpu); + ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs); + vcpu_put(vcpu); + + return ret; +} + +int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, + struct kvm_sregs *sregs) +{ + int ret; + + vcpu_load(vcpu); + ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs); + vcpu_put(vcpu); + + return ret; +} + +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 = kvmppc_get_msr(vcpu); + regs->srr0 = kvmppc_get_srr0(vcpu); + regs->srr1 = kvmppc_get_srr1(vcpu); + regs->pid = vcpu->arch.pid; + regs->sprg0 = kvmppc_get_sprg0(vcpu); + regs->sprg1 = kvmppc_get_sprg1(vcpu); + regs->sprg2 = kvmppc_get_sprg2(vcpu); + regs->sprg3 = kvmppc_get_sprg3(vcpu); + regs->sprg4 = kvmppc_get_sprg4(vcpu); + regs->sprg5 = kvmppc_get_sprg5(vcpu); + regs->sprg6 = kvmppc_get_sprg6(vcpu); + regs->sprg7 = kvmppc_get_sprg7(vcpu); + + 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); + kvmppc_set_srr0(vcpu, regs->srr0); + kvmppc_set_srr1(vcpu, regs->srr1); + kvmppc_set_sprg0(vcpu, regs->sprg0); + kvmppc_set_sprg1(vcpu, regs->sprg1); + kvmppc_set_sprg2(vcpu, regs->sprg2); + kvmppc_set_sprg3(vcpu, regs->sprg3); + kvmppc_set_sprg4(vcpu, regs->sprg4); + kvmppc_set_sprg5(vcpu, regs->sprg5); + kvmppc_set_sprg6(vcpu, regs->sprg6); + kvmppc_set_sprg7(vcpu, 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 -EOPNOTSUPP; +} + +int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) +{ + return -EOPNOTSUPP; +} + +int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, + union kvmppc_one_reg *val) +{ + int r = 0; + long int i; + + r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val); + if (r == -EINVAL) { + r = 0; + switch (id) { + case KVM_REG_PPC_DAR: + *val = get_reg_val(id, kvmppc_get_dar(vcpu)); + break; + case KVM_REG_PPC_DSISR: + *val = get_reg_val(id, kvmppc_get_dsisr(vcpu)); + break; + case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: + i = id - KVM_REG_PPC_FPR0; + *val = get_reg_val(id, VCPU_FPR(vcpu, i)); + break; + case KVM_REG_PPC_FPSCR: + *val = get_reg_val(id, vcpu->arch.fp.fpscr); + break; +#ifdef CONFIG_VSX + case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: + if (cpu_has_feature(CPU_FTR_VSX)) { + i = 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: + *val = get_reg_val(id, INS_TW); + break; +#ifdef CONFIG_KVM_XICS + case KVM_REG_PPC_ICP_STATE: + if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) { + r = -ENXIO; + break; + } + if (xics_on_xive()) + *val = get_reg_val(id, kvmppc_xive_get_icp(vcpu)); + else + *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu)); + break; +#endif /* CONFIG_KVM_XICS */ +#ifdef CONFIG_KVM_XIVE + case KVM_REG_PPC_VP_STATE: + if (!vcpu->arch.xive_vcpu) { + r = -ENXIO; + break; + } + if (xive_enabled()) + r = kvmppc_xive_native_get_vp(vcpu, val); + else + r = -ENXIO; + break; +#endif /* CONFIG_KVM_XIVE */ + case KVM_REG_PPC_FSCR: + *val = get_reg_val(id, vcpu->arch.fscr); + break; + case KVM_REG_PPC_TAR: + *val = get_reg_val(id, vcpu->arch.tar); + break; + case KVM_REG_PPC_EBBHR: + *val = get_reg_val(id, vcpu->arch.ebbhr); + break; + case KVM_REG_PPC_EBBRR: + *val = get_reg_val(id, vcpu->arch.ebbrr); + break; + case KVM_REG_PPC_BESCR: + *val = get_reg_val(id, vcpu->arch.bescr); + break; + case KVM_REG_PPC_IC: + *val = get_reg_val(id, vcpu->arch.ic); + break; + default: + r = -EINVAL; + break; + } + } + + return r; +} + +int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, + union kvmppc_one_reg *val) +{ + int r = 0; + long int i; + + r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val); + if (r == -EINVAL) { + r = 0; + switch (id) { + case KVM_REG_PPC_DAR: + kvmppc_set_dar(vcpu, set_reg_val(id, *val)); + break; + case KVM_REG_PPC_DSISR: + kvmppc_set_dsisr(vcpu, set_reg_val(id, *val)); + break; + case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: + i = id - KVM_REG_PPC_FPR0; + VCPU_FPR(vcpu, i) = set_reg_val(id, *val); + break; + case KVM_REG_PPC_FPSCR: + vcpu->arch.fp.fpscr = set_reg_val(id, *val); + break; +#ifdef CONFIG_VSX + case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: + if (cpu_has_feature(CPU_FTR_VSX)) { + i = 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 && !vcpu->arch.xive_vcpu) { + r = -ENXIO; + break; + } + if (xics_on_xive()) + r = kvmppc_xive_set_icp(vcpu, set_reg_val(id, *val)); + else + r = kvmppc_xics_set_icp(vcpu, set_reg_val(id, *val)); + break; +#endif /* CONFIG_KVM_XICS */ +#ifdef CONFIG_KVM_XIVE + case KVM_REG_PPC_VP_STATE: + if (!vcpu->arch.xive_vcpu) { + r = -ENXIO; + break; + } + if (xive_enabled()) + r = kvmppc_xive_native_set_vp(vcpu, val); + else + r = -ENXIO; + break; +#endif /* CONFIG_KVM_XIVE */ + case KVM_REG_PPC_FSCR: + vcpu->arch.fscr = set_reg_val(id, *val); + break; + case KVM_REG_PPC_TAR: + vcpu->arch.tar = set_reg_val(id, *val); + break; + case KVM_REG_PPC_EBBHR: + vcpu->arch.ebbhr = set_reg_val(id, *val); + break; + case KVM_REG_PPC_EBBRR: + vcpu->arch.ebbrr = set_reg_val(id, *val); + break; + case KVM_REG_PPC_BESCR: + vcpu->arch.bescr = set_reg_val(id, *val); + break; + case KVM_REG_PPC_IC: + vcpu->arch.ic = set_reg_val(id, *val); + break; + 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_vcpu *vcpu) +{ + return vcpu->kvm->arch.kvm_ops->vcpu_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) +{ + vcpu_load(vcpu); + vcpu->guest_debug = dbg->control; + vcpu_put(vcpu); + return 0; +} + +void kvmppc_decrementer_func(struct kvm_vcpu *vcpu) +{ + kvmppc_core_queue_dec(vcpu); + kvm_vcpu_kick(vcpu); +} + +int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu) +{ + return vcpu->kvm->arch.kvm_ops->vcpu_create(vcpu); +} + +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); +} + +void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot) +{ + +} + +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 *slot) +{ + kvm->arch.kvm_ops->free_memslot(slot); +} + +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, + const struct kvm_memory_slot *old, + struct kvm_memory_slot *new, + enum kvm_mr_change change) +{ + return kvm->arch.kvm_ops->prepare_memory_region(kvm, old, new, change); +} + +void kvmppc_core_commit_memory_region(struct kvm *kvm, + struct kvm_memory_slot *old, + const struct kvm_memory_slot *new, + enum kvm_mr_change change) +{ + kvm->arch.kvm_ops->commit_memory_region(kvm, old, new, change); +} + +bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range) +{ + return kvm->arch.kvm_ops->unmap_gfn_range(kvm, range); +} + +bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) +{ + return kvm->arch.kvm_ops->age_gfn(kvm, range); +} + +bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) +{ + return kvm->arch.kvm_ops->test_age_gfn(kvm, range); +} + +bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range) +{ + return kvm->arch.kvm_ops->set_spte_gfn(kvm, range); +} + +int kvmppc_core_init_vm(struct kvm *kvm) +{ + +#ifdef CONFIG_PPC64 + INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables); + INIT_LIST_HEAD(&kvm->arch.rtas_tokens); + mutex_init(&kvm->arch.rtas_token_lock); +#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 + +#ifdef CONFIG_KVM_XICS + /* + * Free the XIVE and XICS devices which are not directly freed by the + * device 'release' method + */ + kfree(kvm->arch.xive_devices.native); + kvm->arch.xive_devices.native = NULL; + kfree(kvm->arch.xive_devices.xics_on_xive); + kvm->arch.xive_devices.xics_on_xive = NULL; + kfree(kvm->arch.xics_device); + kvm->arch.xics_device = NULL; +#endif /* CONFIG_KVM_XICS */ +} + +int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu) +{ + unsigned long size = kvmppc_get_gpr(vcpu, 4); + unsigned long addr = kvmppc_get_gpr(vcpu, 5); + u64 buf; + int srcu_idx; + int ret; + + if (!is_power_of_2(size) || (size > sizeof(buf))) + return H_TOO_HARD; + + srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); + ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf); + srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); + if (ret != 0) + return H_TOO_HARD; + + switch (size) { + case 1: + kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf); + break; + + case 2: + kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf)); + break; + + case 4: + kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf)); + break; + + case 8: + kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf)); + break; + + default: + BUG(); + } + + return H_SUCCESS; +} +EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load); + +int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu) +{ + unsigned long size = kvmppc_get_gpr(vcpu, 4); + unsigned long addr = kvmppc_get_gpr(vcpu, 5); + unsigned long val = kvmppc_get_gpr(vcpu, 6); + u64 buf; + int srcu_idx; + int ret; + + switch (size) { + case 1: + *(u8 *)&buf = val; + break; + + case 2: + *(__be16 *)&buf = cpu_to_be16(val); + break; + + case 4: + *(__be32 *)&buf = cpu_to_be32(val); + break; + + case 8: + *(__be64 *)&buf = cpu_to_be64(val); + break; + + default: + return H_TOO_HARD; + } + + srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); + ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf); + srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); + if (ret != 0) + return H_TOO_HARD; + + return H_SUCCESS; +} +EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store); + +int kvmppc_core_check_processor_compat(void) +{ + /* + * We always return 0 for book3s. We check + * for compatibility while loading the HV + * or PR module + */ + return 0; +} + +int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall) +{ + return kvm->arch.kvm_ops->hcall_implemented(hcall); +} + +#ifdef CONFIG_KVM_XICS +int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, + bool line_status) +{ + if (xics_on_xive()) + return kvmppc_xive_set_irq(kvm, irq_source_id, irq, level, + line_status); + else + return kvmppc_xics_set_irq(kvm, irq_source_id, irq, level, + line_status); +} + +int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry, + struct kvm *kvm, int irq_source_id, + int level, bool line_status) +{ + return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi, + level, line_status); +} +static int kvmppc_book3s_set_irq(struct kvm_kernel_irq_routing_entry *e, + struct kvm *kvm, int irq_source_id, int level, + bool line_status) +{ + return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status); +} + +int kvm_irq_map_gsi(struct kvm *kvm, + struct kvm_kernel_irq_routing_entry *entries, int gsi) +{ + entries->gsi = gsi; + entries->type = KVM_IRQ_ROUTING_IRQCHIP; + entries->set = kvmppc_book3s_set_irq; + entries->irqchip.irqchip = 0; + entries->irqchip.pin = gsi; + return 1; +} + +int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin) +{ + return pin; +} + +#endif /* CONFIG_KVM_XICS */ + +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 + +#ifdef CONFIG_KVM_XICS +#ifdef CONFIG_KVM_XIVE + if (xics_on_xive()) { + kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS); + if (kvmppc_xive_native_supported()) + kvm_register_device_ops(&kvm_xive_native_ops, + KVM_DEV_TYPE_XIVE); + } else +#endif + kvm_register_device_ops(&kvm_xics_ops, KVM_DEV_TYPE_XICS); +#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 |