summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kvm/book3s.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/kvm/book3s.c')
-rw-r--r--arch/powerpc/kvm/book3s.c1046
1 files changed, 1046 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
new file mode 100644
index 000000000..bc9d1321d
--- /dev/null
+++ b/arch/powerpc/kvm/book3s.c
@@ -0,0 +1,1046 @@
+/*
+ * 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 <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 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_poll_success_ns", VCPU_STAT(halt_poll_success_ns) },
+ { "halt_poll_fail_ns", VCPU_STAT(halt_poll_fail_ns) },
+ { "halt_wait_ns", VCPU_STAT(halt_wait_ns) },
+ { "halt_successful_poll", VCPU_STAT(halt_successful_poll), },
+ { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), },
+ { "halt_successful_wait", VCPU_STAT(halt_successful_wait) },
+ { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
+ { "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) },
+ { "pthru_all", VCPU_STAT(pthru_all) },
+ { "pthru_host", VCPU_STAT(pthru_host) },
+ { "pthru_bad_aff", VCPU_STAT(pthru_bad_aff) },
+ { NULL }
+};
+
+void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
+{
+ if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
+ ulong pc = kvmppc_get_pc(vcpu);
+ ulong lr = kvmppc_get_lr(vcpu);
+ if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
+ kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
+ if ((lr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
+ kvmppc_set_lr(vcpu, lr & ~SPLIT_HACK_MASK);
+ vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
+ }
+}
+EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
+
+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)
+ 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)
+{
+ kvmppc_unfixup_split_real(vcpu);
+ kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
+ kvmppc_set_srr1(vcpu, (kvmppc_get_msr(vcpu) & ~0x783f0000ul) | 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;
+ 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_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)
+{
+ 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);
+}
+
+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:
+ case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
+ 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_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);
+
+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 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)
+{
+ 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 -ENOTSUPP;
+}
+
+int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
+{
+ return -ENOTSUPP;
+}
+
+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 (xive_enabled())
+ *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 */
+ 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 (xive_enabled())
+ 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 */
+ 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_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)
+{
+ 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);
+}
+
+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,
+ const 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,
+ const struct kvm_userspace_memory_region *mem,
+ const struct kvm_memory_slot *old,
+ const struct kvm_memory_slot *new)
+{
+ kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new);
+}
+
+int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end,
+ bool blockable)
+{
+ return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
+}
+
+int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end)
+{
+ return kvm->arch.kvm_ops->age_hva(kvm, start, end);
+}
+
+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_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
+}
+
+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 (xive_enabled())
+ 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 (xive_enabled()) {
+ kvmppc_xive_init_module();
+ kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS);
+ } 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_XICS
+ if (xive_enabled())
+ kvmppc_xive_exit_module();
+#endif
+#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
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 21:44:46 +0000