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/*
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* PowerPC implementation of KVM hooks
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*
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* Copyright IBM Corp. 2007
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* Copyright (C) 2011 Freescale Semiconductor, Inc.
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*
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* Authors:
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* Jerone Young <jyoung5@us.ibm.com>
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* Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
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* Hollis Blanchard <hollisb@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include <dirent.h> |
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#include <sys/types.h> |
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#include <sys/ioctl.h> |
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#include <sys/mman.h> |
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#include <sys/vfs.h> |
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#include <linux/kvm.h> |
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#include "qemu-common.h" |
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#include "qemu-timer.h" |
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#include "sysemu.h" |
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#include "kvm.h" |
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#include "kvm_ppc.h" |
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#include "cpu.h" |
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#include "cpus.h" |
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#include "device_tree.h" |
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#include "hw/sysbus.h" |
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#include "hw/spapr.h" |
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#include "hw/sysbus.h" |
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#include "hw/spapr.h" |
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#include "hw/spapr_vio.h" |
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//#define DEBUG_KVM
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#ifdef DEBUG_KVM
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#define dprintf(fmt, ...) \
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do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
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#else
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#define dprintf(fmt, ...) \
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do { } while (0) |
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#endif
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#define PROC_DEVTREE_CPU "/proc/device-tree/cpus/" |
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const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
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KVM_CAP_LAST_INFO |
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}; |
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static int cap_interrupt_unset = false; |
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static int cap_interrupt_level = false; |
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static int cap_segstate; |
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static int cap_booke_sregs; |
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static int cap_ppc_smt; |
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static int cap_ppc_rma; |
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static int cap_spapr_tce; |
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static int cap_hior; |
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/* XXX We have a race condition where we actually have a level triggered
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* interrupt, but the infrastructure can't expose that yet, so the guest
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* takes but ignores it, goes to sleep and never gets notified that there's
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* still an interrupt pending.
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*
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* As a quick workaround, let's just wake up again 20 ms after we injected
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* an interrupt. That way we can assure that we're always reinjecting
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* interrupts in case the guest swallowed them.
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*/
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static QEMUTimer *idle_timer;
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static void kvm_kick_env(void *env) |
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{
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qemu_cpu_kick(env); |
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} |
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int kvm_arch_init(KVMState *s)
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{
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cap_interrupt_unset = kvm_check_extension(s, KVM_CAP_PPC_UNSET_IRQ); |
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cap_interrupt_level = kvm_check_extension(s, KVM_CAP_PPC_IRQ_LEVEL); |
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cap_segstate = kvm_check_extension(s, KVM_CAP_PPC_SEGSTATE); |
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cap_booke_sregs = kvm_check_extension(s, KVM_CAP_PPC_BOOKE_SREGS); |
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cap_ppc_smt = kvm_check_extension(s, KVM_CAP_PPC_SMT); |
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cap_ppc_rma = kvm_check_extension(s, KVM_CAP_PPC_RMA); |
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cap_spapr_tce = kvm_check_extension(s, KVM_CAP_SPAPR_TCE); |
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cap_hior = kvm_check_extension(s, KVM_CAP_PPC_HIOR); |
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|
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if (!cap_interrupt_level) {
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fprintf(stderr, "KVM: Couldn't find level irq capability. Expect the "
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"VM to stall at times!\n");
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} |
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return 0; |
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} |
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static int kvm_arch_sync_sregs(CPUPPCState *cenv) |
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{
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struct kvm_sregs sregs;
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int ret;
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if (cenv->excp_model == POWERPC_EXCP_BOOKE) {
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/* What we're really trying to say is "if we're on BookE, we use
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the native PVR for now". This is the only sane way to check
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it though, so we potentially confuse users that they can run
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BookE guests on BookS. Let's hope nobody dares enough :) */
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return 0; |
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} else {
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if (!cap_segstate) {
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fprintf(stderr, "kvm error: missing PVR setting capability\n");
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return -ENOSYS;
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} |
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} |
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ret = kvm_vcpu_ioctl(cenv, KVM_GET_SREGS, &sregs); |
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if (ret) {
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return ret;
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} |
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sregs.pvr = cenv->spr[SPR_PVR]; |
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return kvm_vcpu_ioctl(cenv, KVM_SET_SREGS, &sregs);
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} |
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/* Set up a shared TLB array with KVM */
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static int kvm_booke206_tlb_init(CPUPPCState *env) |
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{
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struct kvm_book3e_206_tlb_params params = {};
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struct kvm_config_tlb cfg = {};
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struct kvm_enable_cap encap = {};
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unsigned int entries = 0; |
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int ret, i;
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if (!kvm_enabled() ||
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!kvm_check_extension(env->kvm_state, KVM_CAP_SW_TLB)) {
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return 0; |
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} |
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assert(ARRAY_SIZE(params.tlb_sizes) == BOOKE206_MAX_TLBN); |
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for (i = 0; i < BOOKE206_MAX_TLBN; i++) { |
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params.tlb_sizes[i] = booke206_tlb_size(env, i); |
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params.tlb_ways[i] = booke206_tlb_ways(env, i); |
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entries += params.tlb_sizes[i]; |
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} |
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assert(entries == env->nb_tlb); |
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assert(sizeof(struct kvm_book3e_206_tlb_entry) == sizeof(ppcmas_tlb_t)); |
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env->tlb_dirty = true;
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cfg.array = (uintptr_t)env->tlb.tlbm; |
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cfg.array_len = sizeof(ppcmas_tlb_t) * entries;
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cfg.params = (uintptr_t)¶ms; |
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cfg.mmu_type = KVM_MMU_FSL_BOOKE_NOHV; |
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encap.cap = KVM_CAP_SW_TLB; |
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encap.args[0] = (uintptr_t)&cfg;
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ret = kvm_vcpu_ioctl(env, KVM_ENABLE_CAP, &encap); |
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if (ret < 0) { |
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fprintf(stderr, "%s: couldn't enable KVM_CAP_SW_TLB: %s\n",
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__func__, strerror(-ret)); |
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return ret;
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} |
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env->kvm_sw_tlb = true;
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return 0; |
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} |
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#if defined(TARGET_PPC64)
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static void kvm_get_fallback_smmu_info(CPUPPCState *env, |
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struct kvm_ppc_smmu_info *info)
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{
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memset(info, 0, sizeof(*info)); |
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/* We don't have the new KVM_PPC_GET_SMMU_INFO ioctl, so
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* need to "guess" what the supported page sizes are.
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*
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* For that to work we make a few assumptions:
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*
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* - If KVM_CAP_PPC_GET_PVINFO is supported we are running "PR"
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* KVM which only supports 4K and 16M pages, but supports them
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* regardless of the backing store characteritics. We also don't
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* support 1T segments.
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*
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* This is safe as if HV KVM ever supports that capability or PR
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* KVM grows supports for more page/segment sizes, those versions
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* will have implemented KVM_CAP_PPC_GET_SMMU_INFO and thus we
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* will not hit this fallback
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*
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* - Else we are running HV KVM. This means we only support page
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* sizes that fit in the backing store. Additionally we only
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* advertize 64K pages if the processor is ARCH 2.06 and we assume
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* P7 encodings for the SLB and hash table. Here too, we assume
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* support for any newer processor will mean a kernel that
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* implements KVM_CAP_PPC_GET_SMMU_INFO and thus doesn't hit
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* this fallback.
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*/
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if (kvm_check_extension(env->kvm_state, KVM_CAP_PPC_GET_PVINFO)) {
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/* No flags */
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info->flags = 0;
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info->slb_size = 64;
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/* Standard 4k base page size segment */
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info->sps[0].page_shift = 12; |
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info->sps[0].slb_enc = 0; |
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info->sps[0].enc[0].page_shift = 12; |
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info->sps[0].enc[0].pte_enc = 0; |
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/* Standard 16M large page size segment */
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info->sps[1].page_shift = 24; |
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info->sps[1].slb_enc = SLB_VSID_L;
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info->sps[1].enc[0].page_shift = 24; |
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info->sps[1].enc[0].pte_enc = 0; |
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} else {
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int i = 0; |
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/* HV KVM has backing store size restrictions */
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info->flags = KVM_PPC_PAGE_SIZES_REAL; |
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if (env->mmu_model & POWERPC_MMU_1TSEG) {
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info->flags |= KVM_PPC_1T_SEGMENTS; |
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} |
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if (env->mmu_model == POWERPC_MMU_2_06) {
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info->slb_size = 32;
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} else {
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info->slb_size = 64;
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} |
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/* Standard 4k base page size segment */
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info->sps[i].page_shift = 12;
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info->sps[i].slb_enc = 0;
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info->sps[i].enc[0].page_shift = 12; |
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info->sps[i].enc[0].pte_enc = 0; |
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i++; |
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/* 64K on MMU 2.06 */
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if (env->mmu_model == POWERPC_MMU_2_06) {
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info->sps[i].page_shift = 16;
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info->sps[i].slb_enc = 0x110;
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info->sps[i].enc[0].page_shift = 16; |
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info->sps[i].enc[0].pte_enc = 1; |
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i++; |
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} |
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/* Standard 16M large page size segment */
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info->sps[i].page_shift = 24;
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info->sps[i].slb_enc = SLB_VSID_L; |
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info->sps[i].enc[0].page_shift = 24; |
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info->sps[i].enc[0].pte_enc = 0; |
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} |
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} |
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static void kvm_get_smmu_info(CPUPPCState *env, struct kvm_ppc_smmu_info *info) |
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{
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int ret;
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if (kvm_check_extension(env->kvm_state, KVM_CAP_PPC_GET_SMMU_INFO)) {
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ret = kvm_vm_ioctl(env->kvm_state, KVM_PPC_GET_SMMU_INFO, info); |
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if (ret == 0) { |
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return;
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} |
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} |
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kvm_get_fallback_smmu_info(env, info); |
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} |
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|
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static long getrampagesize(void) |
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{
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struct statfs fs;
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int ret;
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if (!mem_path) {
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/* guest RAM is backed by normal anonymous pages */
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return getpagesize();
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} |
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do {
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ret = statfs(mem_path, &fs); |
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} while (ret != 0 && errno == EINTR); |
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if (ret != 0) { |
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fprintf(stderr, "Couldn't statfs() memory path: %s\n",
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strerror(errno)); |
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exit(1);
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} |
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|
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#define HUGETLBFS_MAGIC 0x958458f6 |
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|
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if (fs.f_type != HUGETLBFS_MAGIC) {
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/* Explicit mempath, but it's ordinary pages */
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return getpagesize();
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} |
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/* It's hugepage, return the huge page size */
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return fs.f_bsize;
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} |
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|
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static bool kvm_valid_page_size(uint32_t flags, long rampgsize, uint32_t shift) |
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{
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if (!(flags & KVM_PPC_PAGE_SIZES_REAL)) {
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return true; |
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} |
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return (1ul << shift) <= rampgsize; |
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} |
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|
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static void kvm_fixup_page_sizes(CPUPPCState *env) |
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{
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static struct kvm_ppc_smmu_info smmu_info; |
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static bool has_smmu_info; |
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long rampagesize;
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int iq, ik, jq, jk;
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/* We only handle page sizes for 64-bit server guests for now */
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if (!(env->mmu_model & POWERPC_MMU_64)) {
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return;
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} |
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|
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/* Collect MMU info from kernel if not already */
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if (!has_smmu_info) {
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kvm_get_smmu_info(env, &smmu_info); |
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has_smmu_info = true;
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} |
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|
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rampagesize = getrampagesize(); |
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|
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/* Convert to QEMU form */
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memset(&env->sps, 0, sizeof(env->sps)); |
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|
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for (ik = iq = 0; ik < KVM_PPC_PAGE_SIZES_MAX_SZ; ik++) { |
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struct ppc_one_seg_page_size *qsps = &env->sps.sps[iq];
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struct kvm_ppc_one_seg_page_size *ksps = &smmu_info.sps[ik];
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|
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if (!kvm_valid_page_size(smmu_info.flags, rampagesize,
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ksps->page_shift)) {
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continue;
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} |
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qsps->page_shift = ksps->page_shift; |
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qsps->slb_enc = ksps->slb_enc; |
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for (jk = jq = 0; jk < KVM_PPC_PAGE_SIZES_MAX_SZ; jk++) { |
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if (!kvm_valid_page_size(smmu_info.flags, rampagesize,
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ksps->enc[jk].page_shift)) {
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continue;
|
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} |
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qsps->enc[jq].page_shift = ksps->enc[jk].page_shift; |
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qsps->enc[jq].pte_enc = ksps->enc[jk].pte_enc; |
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if (++jq >= PPC_PAGE_SIZES_MAX_SZ) {
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break;
|
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} |
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} |
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if (++iq >= PPC_PAGE_SIZES_MAX_SZ) {
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break;
|
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} |
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} |
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env->slb_nr = smmu_info.slb_size; |
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if (smmu_info.flags & KVM_PPC_1T_SEGMENTS) {
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env->mmu_model |= POWERPC_MMU_1TSEG; |
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} else {
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env->mmu_model &= ~POWERPC_MMU_1TSEG; |
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} |
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} |
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#else /* defined (TARGET_PPC64) */ |
| 369 |
|
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static inline void kvm_fixup_page_sizes(CPUPPCState *env) |
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{
|
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} |
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|
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#endif /* !defined (TARGET_PPC64) */ |
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|
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int kvm_arch_init_vcpu(CPUPPCState *cenv)
|
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{
|
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int ret;
|
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|
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/* Gather server mmu info from KVM and update the CPU state */
|
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kvm_fixup_page_sizes(cenv); |
| 382 |
|
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/* Synchronize sregs with kvm */
|
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ret = kvm_arch_sync_sregs(cenv); |
| 385 |
if (ret) {
|
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return ret;
|
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} |
| 388 |
|
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idle_timer = qemu_new_timer_ns(vm_clock, kvm_kick_env, cenv); |
| 390 |
|
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/* Some targets support access to KVM's guest TLB. */
|
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switch (cenv->mmu_model) {
|
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case POWERPC_MMU_BOOKE206:
|
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ret = kvm_booke206_tlb_init(cenv); |
| 395 |
break;
|
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default:
|
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break;
|
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} |
| 399 |
|
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return ret;
|
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} |
| 402 |
|
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void kvm_arch_reset_vcpu(CPUPPCState *env)
|
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{
|
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} |
| 406 |
|
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static void kvm_sw_tlb_put(CPUPPCState *env) |
| 408 |
{
|
| 409 |
struct kvm_dirty_tlb dirty_tlb;
|
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unsigned char *bitmap; |
| 411 |
int ret;
|
| 412 |
|
| 413 |
if (!env->kvm_sw_tlb) {
|
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return;
|
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} |
| 416 |
|
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bitmap = g_malloc((env->nb_tlb + 7) / 8); |
| 418 |
memset(bitmap, 0xFF, (env->nb_tlb + 7) / 8); |
| 419 |
|
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dirty_tlb.bitmap = (uintptr_t)bitmap; |
| 421 |
dirty_tlb.num_dirty = env->nb_tlb; |
| 422 |
|
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ret = kvm_vcpu_ioctl(env, KVM_DIRTY_TLB, &dirty_tlb); |
| 424 |
if (ret) {
|
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fprintf(stderr, "%s: KVM_DIRTY_TLB: %s\n",
|
| 426 |
__func__, strerror(-ret)); |
| 427 |
} |
| 428 |
|
| 429 |
g_free(bitmap); |
| 430 |
} |
| 431 |
|
| 432 |
int kvm_arch_put_registers(CPUPPCState *env, int level) |
| 433 |
{
|
| 434 |
struct kvm_regs regs;
|
| 435 |
int ret;
|
| 436 |
int i;
|
| 437 |
|
| 438 |
ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s); |
| 439 |
if (ret < 0) |
| 440 |
return ret;
|
| 441 |
|
| 442 |
regs.ctr = env->ctr; |
| 443 |
regs.lr = env->lr; |
| 444 |
regs.xer = env->xer; |
| 445 |
regs.msr = env->msr; |
| 446 |
regs.pc = env->nip; |
| 447 |
|
| 448 |
regs.srr0 = env->spr[SPR_SRR0]; |
| 449 |
regs.srr1 = env->spr[SPR_SRR1]; |
| 450 |
|
| 451 |
regs.sprg0 = env->spr[SPR_SPRG0]; |
| 452 |
regs.sprg1 = env->spr[SPR_SPRG1]; |
| 453 |
regs.sprg2 = env->spr[SPR_SPRG2]; |
| 454 |
regs.sprg3 = env->spr[SPR_SPRG3]; |
| 455 |
regs.sprg4 = env->spr[SPR_SPRG4]; |
| 456 |
regs.sprg5 = env->spr[SPR_SPRG5]; |
| 457 |
regs.sprg6 = env->spr[SPR_SPRG6]; |
| 458 |
regs.sprg7 = env->spr[SPR_SPRG7]; |
| 459 |
|
| 460 |
regs.pid = env->spr[SPR_BOOKE_PID]; |
| 461 |
|
| 462 |
for (i = 0;i < 32; i++) |
| 463 |
regs.gpr[i] = env->gpr[i]; |
| 464 |
|
| 465 |
ret = kvm_vcpu_ioctl(env, KVM_SET_REGS, ®s); |
| 466 |
if (ret < 0) |
| 467 |
return ret;
|
| 468 |
|
| 469 |
if (env->tlb_dirty) {
|
| 470 |
kvm_sw_tlb_put(env); |
| 471 |
env->tlb_dirty = false;
|
| 472 |
} |
| 473 |
|
| 474 |
if (cap_segstate && (level >= KVM_PUT_RESET_STATE)) {
|
| 475 |
struct kvm_sregs sregs;
|
| 476 |
|
| 477 |
sregs.pvr = env->spr[SPR_PVR]; |
| 478 |
|
| 479 |
sregs.u.s.sdr1 = env->spr[SPR_SDR1]; |
| 480 |
|
| 481 |
/* Sync SLB */
|
| 482 |
#ifdef TARGET_PPC64
|
| 483 |
for (i = 0; i < 64; i++) { |
| 484 |
sregs.u.s.ppc64.slb[i].slbe = env->slb[i].esid; |
| 485 |
sregs.u.s.ppc64.slb[i].slbv = env->slb[i].vsid; |
| 486 |
} |
| 487 |
#endif
|
| 488 |
|
| 489 |
/* Sync SRs */
|
| 490 |
for (i = 0; i < 16; i++) { |
| 491 |
sregs.u.s.ppc32.sr[i] = env->sr[i]; |
| 492 |
} |
| 493 |
|
| 494 |
/* Sync BATs */
|
| 495 |
for (i = 0; i < 8; i++) { |
| 496 |
/* Beware. We have to swap upper and lower bits here */
|
| 497 |
sregs.u.s.ppc32.dbat[i] = ((uint64_t)env->DBAT[0][i] << 32) |
| 498 |
| env->DBAT[1][i];
|
| 499 |
sregs.u.s.ppc32.ibat[i] = ((uint64_t)env->IBAT[0][i] << 32) |
| 500 |
| env->IBAT[1][i];
|
| 501 |
} |
| 502 |
|
| 503 |
ret = kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs); |
| 504 |
if (ret) {
|
| 505 |
return ret;
|
| 506 |
} |
| 507 |
} |
| 508 |
|
| 509 |
if (cap_hior && (level >= KVM_PUT_RESET_STATE)) {
|
| 510 |
uint64_t hior = env->spr[SPR_HIOR]; |
| 511 |
struct kvm_one_reg reg = {
|
| 512 |
.id = KVM_REG_PPC_HIOR, |
| 513 |
.addr = (uintptr_t) &hior, |
| 514 |
}; |
| 515 |
|
| 516 |
ret = kvm_vcpu_ioctl(env, KVM_SET_ONE_REG, ®); |
| 517 |
if (ret) {
|
| 518 |
return ret;
|
| 519 |
} |
| 520 |
} |
| 521 |
|
| 522 |
return ret;
|
| 523 |
} |
| 524 |
|
| 525 |
int kvm_arch_get_registers(CPUPPCState *env)
|
| 526 |
{
|
| 527 |
struct kvm_regs regs;
|
| 528 |
struct kvm_sregs sregs;
|
| 529 |
uint32_t cr; |
| 530 |
int i, ret;
|
| 531 |
|
| 532 |
ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s); |
| 533 |
if (ret < 0) |
| 534 |
return ret;
|
| 535 |
|
| 536 |
cr = regs.cr; |
| 537 |
for (i = 7; i >= 0; i--) { |
| 538 |
env->crf[i] = cr & 15;
|
| 539 |
cr >>= 4;
|
| 540 |
} |
| 541 |
|
| 542 |
env->ctr = regs.ctr; |
| 543 |
env->lr = regs.lr; |
| 544 |
env->xer = regs.xer; |
| 545 |
env->msr = regs.msr; |
| 546 |
env->nip = regs.pc; |
| 547 |
|
| 548 |
env->spr[SPR_SRR0] = regs.srr0; |
| 549 |
env->spr[SPR_SRR1] = regs.srr1; |
| 550 |
|
| 551 |
env->spr[SPR_SPRG0] = regs.sprg0; |
| 552 |
env->spr[SPR_SPRG1] = regs.sprg1; |
| 553 |
env->spr[SPR_SPRG2] = regs.sprg2; |
| 554 |
env->spr[SPR_SPRG3] = regs.sprg3; |
| 555 |
env->spr[SPR_SPRG4] = regs.sprg4; |
| 556 |
env->spr[SPR_SPRG5] = regs.sprg5; |
| 557 |
env->spr[SPR_SPRG6] = regs.sprg6; |
| 558 |
env->spr[SPR_SPRG7] = regs.sprg7; |
| 559 |
|
| 560 |
env->spr[SPR_BOOKE_PID] = regs.pid; |
| 561 |
|
| 562 |
for (i = 0;i < 32; i++) |
| 563 |
env->gpr[i] = regs.gpr[i]; |
| 564 |
|
| 565 |
if (cap_booke_sregs) {
|
| 566 |
ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs); |
| 567 |
if (ret < 0) { |
| 568 |
return ret;
|
| 569 |
} |
| 570 |
|
| 571 |
if (sregs.u.e.features & KVM_SREGS_E_BASE) {
|
| 572 |
env->spr[SPR_BOOKE_CSRR0] = sregs.u.e.csrr0; |
| 573 |
env->spr[SPR_BOOKE_CSRR1] = sregs.u.e.csrr1; |
| 574 |
env->spr[SPR_BOOKE_ESR] = sregs.u.e.esr; |
| 575 |
env->spr[SPR_BOOKE_DEAR] = sregs.u.e.dear; |
| 576 |
env->spr[SPR_BOOKE_MCSR] = sregs.u.e.mcsr; |
| 577 |
env->spr[SPR_BOOKE_TSR] = sregs.u.e.tsr; |
| 578 |
env->spr[SPR_BOOKE_TCR] = sregs.u.e.tcr; |
| 579 |
env->spr[SPR_DECR] = sregs.u.e.dec; |
| 580 |
env->spr[SPR_TBL] = sregs.u.e.tb & 0xffffffff;
|
| 581 |
env->spr[SPR_TBU] = sregs.u.e.tb >> 32;
|
| 582 |
env->spr[SPR_VRSAVE] = sregs.u.e.vrsave; |
| 583 |
} |
| 584 |
|
| 585 |
if (sregs.u.e.features & KVM_SREGS_E_ARCH206) {
|
| 586 |
env->spr[SPR_BOOKE_PIR] = sregs.u.e.pir; |
| 587 |
env->spr[SPR_BOOKE_MCSRR0] = sregs.u.e.mcsrr0; |
| 588 |
env->spr[SPR_BOOKE_MCSRR1] = sregs.u.e.mcsrr1; |
| 589 |
env->spr[SPR_BOOKE_DECAR] = sregs.u.e.decar; |
| 590 |
env->spr[SPR_BOOKE_IVPR] = sregs.u.e.ivpr; |
| 591 |
} |
| 592 |
|
| 593 |
if (sregs.u.e.features & KVM_SREGS_E_64) {
|
| 594 |
env->spr[SPR_BOOKE_EPCR] = sregs.u.e.epcr; |
| 595 |
} |
| 596 |
|
| 597 |
if (sregs.u.e.features & KVM_SREGS_E_SPRG8) {
|
| 598 |
env->spr[SPR_BOOKE_SPRG8] = sregs.u.e.sprg8; |
| 599 |
} |
| 600 |
|
| 601 |
if (sregs.u.e.features & KVM_SREGS_E_IVOR) {
|
| 602 |
env->spr[SPR_BOOKE_IVOR0] = sregs.u.e.ivor_low[0];
|
| 603 |
env->spr[SPR_BOOKE_IVOR1] = sregs.u.e.ivor_low[1];
|
| 604 |
env->spr[SPR_BOOKE_IVOR2] = sregs.u.e.ivor_low[2];
|
| 605 |
env->spr[SPR_BOOKE_IVOR3] = sregs.u.e.ivor_low[3];
|
| 606 |
env->spr[SPR_BOOKE_IVOR4] = sregs.u.e.ivor_low[4];
|
| 607 |
env->spr[SPR_BOOKE_IVOR5] = sregs.u.e.ivor_low[5];
|
| 608 |
env->spr[SPR_BOOKE_IVOR6] = sregs.u.e.ivor_low[6];
|
| 609 |
env->spr[SPR_BOOKE_IVOR7] = sregs.u.e.ivor_low[7];
|
| 610 |
env->spr[SPR_BOOKE_IVOR8] = sregs.u.e.ivor_low[8];
|
| 611 |
env->spr[SPR_BOOKE_IVOR9] = sregs.u.e.ivor_low[9];
|
| 612 |
env->spr[SPR_BOOKE_IVOR10] = sregs.u.e.ivor_low[10];
|
| 613 |
env->spr[SPR_BOOKE_IVOR11] = sregs.u.e.ivor_low[11];
|
| 614 |
env->spr[SPR_BOOKE_IVOR12] = sregs.u.e.ivor_low[12];
|
| 615 |
env->spr[SPR_BOOKE_IVOR13] = sregs.u.e.ivor_low[13];
|
| 616 |
env->spr[SPR_BOOKE_IVOR14] = sregs.u.e.ivor_low[14];
|
| 617 |
env->spr[SPR_BOOKE_IVOR15] = sregs.u.e.ivor_low[15];
|
| 618 |
|
| 619 |
if (sregs.u.e.features & KVM_SREGS_E_SPE) {
|
| 620 |
env->spr[SPR_BOOKE_IVOR32] = sregs.u.e.ivor_high[0];
|
| 621 |
env->spr[SPR_BOOKE_IVOR33] = sregs.u.e.ivor_high[1];
|
| 622 |
env->spr[SPR_BOOKE_IVOR34] = sregs.u.e.ivor_high[2];
|
| 623 |
} |
| 624 |
|
| 625 |
if (sregs.u.e.features & KVM_SREGS_E_PM) {
|
| 626 |
env->spr[SPR_BOOKE_IVOR35] = sregs.u.e.ivor_high[3];
|
| 627 |
} |
| 628 |
|
| 629 |
if (sregs.u.e.features & KVM_SREGS_E_PC) {
|
| 630 |
env->spr[SPR_BOOKE_IVOR36] = sregs.u.e.ivor_high[4];
|
| 631 |
env->spr[SPR_BOOKE_IVOR37] = sregs.u.e.ivor_high[5];
|
| 632 |
} |
| 633 |
} |
| 634 |
|
| 635 |
if (sregs.u.e.features & KVM_SREGS_E_ARCH206_MMU) {
|
| 636 |
env->spr[SPR_BOOKE_MAS0] = sregs.u.e.mas0; |
| 637 |
env->spr[SPR_BOOKE_MAS1] = sregs.u.e.mas1; |
| 638 |
env->spr[SPR_BOOKE_MAS2] = sregs.u.e.mas2; |
| 639 |
env->spr[SPR_BOOKE_MAS3] = sregs.u.e.mas7_3 & 0xffffffff;
|
| 640 |
env->spr[SPR_BOOKE_MAS4] = sregs.u.e.mas4; |
| 641 |
env->spr[SPR_BOOKE_MAS6] = sregs.u.e.mas6; |
| 642 |
env->spr[SPR_BOOKE_MAS7] = sregs.u.e.mas7_3 >> 32;
|
| 643 |
env->spr[SPR_MMUCFG] = sregs.u.e.mmucfg; |
| 644 |
env->spr[SPR_BOOKE_TLB0CFG] = sregs.u.e.tlbcfg[0];
|
| 645 |
env->spr[SPR_BOOKE_TLB1CFG] = sregs.u.e.tlbcfg[1];
|
| 646 |
} |
| 647 |
|
| 648 |
if (sregs.u.e.features & KVM_SREGS_EXP) {
|
| 649 |
env->spr[SPR_BOOKE_EPR] = sregs.u.e.epr; |
| 650 |
} |
| 651 |
|
| 652 |
if (sregs.u.e.features & KVM_SREGS_E_PD) {
|
| 653 |
env->spr[SPR_BOOKE_EPLC] = sregs.u.e.eplc; |
| 654 |
env->spr[SPR_BOOKE_EPSC] = sregs.u.e.epsc; |
| 655 |
} |
| 656 |
|
| 657 |
if (sregs.u.e.impl_id == KVM_SREGS_E_IMPL_FSL) {
|
| 658 |
env->spr[SPR_E500_SVR] = sregs.u.e.impl.fsl.svr; |
| 659 |
env->spr[SPR_Exxx_MCAR] = sregs.u.e.impl.fsl.mcar; |
| 660 |
env->spr[SPR_HID0] = sregs.u.e.impl.fsl.hid0; |
| 661 |
|
| 662 |
if (sregs.u.e.impl.fsl.features & KVM_SREGS_E_FSL_PIDn) {
|
| 663 |
env->spr[SPR_BOOKE_PID1] = sregs.u.e.impl.fsl.pid1; |
| 664 |
env->spr[SPR_BOOKE_PID2] = sregs.u.e.impl.fsl.pid2; |
| 665 |
} |
| 666 |
} |
| 667 |
} |
| 668 |
|
| 669 |
if (cap_segstate) {
|
| 670 |
ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs); |
| 671 |
if (ret < 0) { |
| 672 |
return ret;
|
| 673 |
} |
| 674 |
|
| 675 |
ppc_store_sdr1(env, sregs.u.s.sdr1); |
| 676 |
|
| 677 |
/* Sync SLB */
|
| 678 |
#ifdef TARGET_PPC64
|
| 679 |
for (i = 0; i < 64; i++) { |
| 680 |
ppc_store_slb(env, sregs.u.s.ppc64.slb[i].slbe, |
| 681 |
sregs.u.s.ppc64.slb[i].slbv); |
| 682 |
} |
| 683 |
#endif
|
| 684 |
|
| 685 |
/* Sync SRs */
|
| 686 |
for (i = 0; i < 16; i++) { |
| 687 |
env->sr[i] = sregs.u.s.ppc32.sr[i]; |
| 688 |
} |
| 689 |
|
| 690 |
/* Sync BATs */
|
| 691 |
for (i = 0; i < 8; i++) { |
| 692 |
env->DBAT[0][i] = sregs.u.s.ppc32.dbat[i] & 0xffffffff; |
| 693 |
env->DBAT[1][i] = sregs.u.s.ppc32.dbat[i] >> 32; |
| 694 |
env->IBAT[0][i] = sregs.u.s.ppc32.ibat[i] & 0xffffffff; |
| 695 |
env->IBAT[1][i] = sregs.u.s.ppc32.ibat[i] >> 32; |
| 696 |
} |
| 697 |
} |
| 698 |
|
| 699 |
return 0; |
| 700 |
} |
| 701 |
|
| 702 |
int kvmppc_set_interrupt(CPUPPCState *env, int irq, int level) |
| 703 |
{
|
| 704 |
unsigned virq = level ? KVM_INTERRUPT_SET_LEVEL : KVM_INTERRUPT_UNSET;
|
| 705 |
|
| 706 |
if (irq != PPC_INTERRUPT_EXT) {
|
| 707 |
return 0; |
| 708 |
} |
| 709 |
|
| 710 |
if (!kvm_enabled() || !cap_interrupt_unset || !cap_interrupt_level) {
|
| 711 |
return 0; |
| 712 |
} |
| 713 |
|
| 714 |
kvm_vcpu_ioctl(env, KVM_INTERRUPT, &virq); |
| 715 |
|
| 716 |
return 0; |
| 717 |
} |
| 718 |
|
| 719 |
#if defined(TARGET_PPCEMB)
|
| 720 |
#define PPC_INPUT_INT PPC40x_INPUT_INT
|
| 721 |
#elif defined(TARGET_PPC64)
|
| 722 |
#define PPC_INPUT_INT PPC970_INPUT_INT
|
| 723 |
#else
|
| 724 |
#define PPC_INPUT_INT PPC6xx_INPUT_INT
|
| 725 |
#endif
|
| 726 |
|
| 727 |
void kvm_arch_pre_run(CPUPPCState *env, struct kvm_run *run) |
| 728 |
{
|
| 729 |
int r;
|
| 730 |
unsigned irq;
|
| 731 |
|
| 732 |
/* PowerPC QEMU tracks the various core input pins (interrupt, critical
|
| 733 |
* interrupt, reset, etc) in PPC-specific env->irq_input_state. */
|
| 734 |
if (!cap_interrupt_level &&
|
| 735 |
run->ready_for_interrupt_injection && |
| 736 |
(env->interrupt_request & CPU_INTERRUPT_HARD) && |
| 737 |
(env->irq_input_state & (1<<PPC_INPUT_INT)))
|
| 738 |
{
|
| 739 |
/* For now KVM disregards the 'irq' argument. However, in the
|
| 740 |
* future KVM could cache it in-kernel to avoid a heavyweight exit
|
| 741 |
* when reading the UIC.
|
| 742 |
*/
|
| 743 |
irq = KVM_INTERRUPT_SET; |
| 744 |
|
| 745 |
dprintf("injected interrupt %d\n", irq);
|
| 746 |
r = kvm_vcpu_ioctl(env, KVM_INTERRUPT, &irq); |
| 747 |
if (r < 0) |
| 748 |
printf("cpu %d fail inject %x\n", env->cpu_index, irq);
|
| 749 |
|
| 750 |
/* Always wake up soon in case the interrupt was level based */
|
| 751 |
qemu_mod_timer(idle_timer, qemu_get_clock_ns(vm_clock) + |
| 752 |
(get_ticks_per_sec() / 50));
|
| 753 |
} |
| 754 |
|
| 755 |
/* We don't know if there are more interrupts pending after this. However,
|
| 756 |
* the guest will return to userspace in the course of handling this one
|
| 757 |
* anyways, so we will get a chance to deliver the rest. */
|
| 758 |
} |
| 759 |
|
| 760 |
void kvm_arch_post_run(CPUPPCState *env, struct kvm_run *run) |
| 761 |
{
|
| 762 |
} |
| 763 |
|
| 764 |
int kvm_arch_process_async_events(CPUPPCState *env)
|
| 765 |
{
|
| 766 |
return env->halted;
|
| 767 |
} |
| 768 |
|
| 769 |
static int kvmppc_handle_halt(CPUPPCState *env) |
| 770 |
{
|
| 771 |
if (!(env->interrupt_request & CPU_INTERRUPT_HARD) && (msr_ee)) {
|
| 772 |
env->halted = 1;
|
| 773 |
env->exception_index = EXCP_HLT; |
| 774 |
} |
| 775 |
|
| 776 |
return 0; |
| 777 |
} |
| 778 |
|
| 779 |
/* map dcr access to existing qemu dcr emulation */
|
| 780 |
static int kvmppc_handle_dcr_read(CPUPPCState *env, uint32_t dcrn, uint32_t *data) |
| 781 |
{
|
| 782 |
if (ppc_dcr_read(env->dcr_env, dcrn, data) < 0) |
| 783 |
fprintf(stderr, "Read to unhandled DCR (0x%x)\n", dcrn);
|
| 784 |
|
| 785 |
return 0; |
| 786 |
} |
| 787 |
|
| 788 |
static int kvmppc_handle_dcr_write(CPUPPCState *env, uint32_t dcrn, uint32_t data) |
| 789 |
{
|
| 790 |
if (ppc_dcr_write(env->dcr_env, dcrn, data) < 0) |
| 791 |
fprintf(stderr, "Write to unhandled DCR (0x%x)\n", dcrn);
|
| 792 |
|
| 793 |
return 0; |
| 794 |
} |
| 795 |
|
| 796 |
int kvm_arch_handle_exit(CPUPPCState *env, struct kvm_run *run) |
| 797 |
{
|
| 798 |
int ret;
|
| 799 |
|
| 800 |
switch (run->exit_reason) {
|
| 801 |
case KVM_EXIT_DCR:
|
| 802 |
if (run->dcr.is_write) {
|
| 803 |
dprintf("handle dcr write\n");
|
| 804 |
ret = kvmppc_handle_dcr_write(env, run->dcr.dcrn, run->dcr.data); |
| 805 |
} else {
|
| 806 |
dprintf("handle dcr read\n");
|
| 807 |
ret = kvmppc_handle_dcr_read(env, run->dcr.dcrn, &run->dcr.data); |
| 808 |
} |
| 809 |
break;
|
| 810 |
case KVM_EXIT_HLT:
|
| 811 |
dprintf("handle halt\n");
|
| 812 |
ret = kvmppc_handle_halt(env); |
| 813 |
break;
|
| 814 |
#ifdef CONFIG_PSERIES
|
| 815 |
case KVM_EXIT_PAPR_HCALL:
|
| 816 |
dprintf("handle PAPR hypercall\n");
|
| 817 |
run->papr_hcall.ret = spapr_hypercall(env, run->papr_hcall.nr, |
| 818 |
run->papr_hcall.args); |
| 819 |
ret = 0;
|
| 820 |
break;
|
| 821 |
#endif
|
| 822 |
default:
|
| 823 |
fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason);
|
| 824 |
ret = -1;
|
| 825 |
break;
|
| 826 |
} |
| 827 |
|
| 828 |
return ret;
|
| 829 |
} |
| 830 |
|
| 831 |
static int read_cpuinfo(const char *field, char *value, int len) |
| 832 |
{
|
| 833 |
FILE *f; |
| 834 |
int ret = -1; |
| 835 |
int field_len = strlen(field);
|
| 836 |
char line[512]; |
| 837 |
|
| 838 |
f = fopen("/proc/cpuinfo", "r"); |
| 839 |
if (!f) {
|
| 840 |
return -1; |
| 841 |
} |
| 842 |
|
| 843 |
do {
|
| 844 |
if(!fgets(line, sizeof(line), f)) { |
| 845 |
break;
|
| 846 |
} |
| 847 |
if (!strncmp(line, field, field_len)) {
|
| 848 |
strncpy(value, line, len); |
| 849 |
ret = 0;
|
| 850 |
break;
|
| 851 |
} |
| 852 |
} while(*line);
|
| 853 |
|
| 854 |
fclose(f); |
| 855 |
|
| 856 |
return ret;
|
| 857 |
} |
| 858 |
|
| 859 |
uint32_t kvmppc_get_tbfreq(void)
|
| 860 |
{
|
| 861 |
char line[512]; |
| 862 |
char *ns;
|
| 863 |
uint32_t retval = get_ticks_per_sec(); |
| 864 |
|
| 865 |
if (read_cpuinfo("timebase", line, sizeof(line))) { |
| 866 |
return retval;
|
| 867 |
} |
| 868 |
|
| 869 |
if (!(ns = strchr(line, ':'))) { |
| 870 |
return retval;
|
| 871 |
} |
| 872 |
|
| 873 |
ns++; |
| 874 |
|
| 875 |
retval = atoi(ns); |
| 876 |
return retval;
|
| 877 |
} |
| 878 |
|
| 879 |
/* Try to find a device tree node for a CPU with clock-frequency property */
|
| 880 |
static int kvmppc_find_cpu_dt(char *buf, int buf_len) |
| 881 |
{
|
| 882 |
struct dirent *dirp;
|
| 883 |
DIR *dp; |
| 884 |
|
| 885 |
if ((dp = opendir(PROC_DEVTREE_CPU)) == NULL) { |
| 886 |
printf("Can't open directory " PROC_DEVTREE_CPU "\n"); |
| 887 |
return -1; |
| 888 |
} |
| 889 |
|
| 890 |
buf[0] = '\0'; |
| 891 |
while ((dirp = readdir(dp)) != NULL) { |
| 892 |
FILE *f; |
| 893 |
snprintf(buf, buf_len, "%s%s/clock-frequency", PROC_DEVTREE_CPU,
|
| 894 |
dirp->d_name); |
| 895 |
f = fopen(buf, "r");
|
| 896 |
if (f) {
|
| 897 |
snprintf(buf, buf_len, "%s%s", PROC_DEVTREE_CPU, dirp->d_name);
|
| 898 |
fclose(f); |
| 899 |
break;
|
| 900 |
} |
| 901 |
buf[0] = '\0'; |
| 902 |
} |
| 903 |
closedir(dp); |
| 904 |
if (buf[0] == '\0') { |
| 905 |
printf("Unknown host!\n");
|
| 906 |
return -1; |
| 907 |
} |
| 908 |
|
| 909 |
return 0; |
| 910 |
} |
| 911 |
|
| 912 |
/* Read a CPU node property from the host device tree that's a single
|
| 913 |
* integer (32-bit or 64-bit). Returns 0 if anything goes wrong
|
| 914 |
* (can't find or open the property, or doesn't understand the
|
| 915 |
* format) */
|
| 916 |
static uint64_t kvmppc_read_int_cpu_dt(const char *propname) |
| 917 |
{
|
| 918 |
char buf[PATH_MAX];
|
| 919 |
union {
|
| 920 |
uint32_t v32; |
| 921 |
uint64_t v64; |
| 922 |
} u; |
| 923 |
FILE *f; |
| 924 |
int len;
|
| 925 |
|
| 926 |
if (kvmppc_find_cpu_dt(buf, sizeof(buf))) { |
| 927 |
return -1; |
| 928 |
} |
| 929 |
|
| 930 |
strncat(buf, "/", sizeof(buf) - strlen(buf)); |
| 931 |
strncat(buf, propname, sizeof(buf) - strlen(buf));
|
| 932 |
|
| 933 |
f = fopen(buf, "rb");
|
| 934 |
if (!f) {
|
| 935 |
return -1; |
| 936 |
} |
| 937 |
|
| 938 |
len = fread(&u, 1, sizeof(u), f); |
| 939 |
fclose(f); |
| 940 |
switch (len) {
|
| 941 |
case 4: |
| 942 |
/* property is a 32-bit quantity */
|
| 943 |
return be32_to_cpu(u.v32);
|
| 944 |
case 8: |
| 945 |
return be64_to_cpu(u.v64);
|
| 946 |
} |
| 947 |
|
| 948 |
return 0; |
| 949 |
} |
| 950 |
|
| 951 |
uint64_t kvmppc_get_clockfreq(void)
|
| 952 |
{
|
| 953 |
return kvmppc_read_int_cpu_dt("clock-frequency"); |
| 954 |
} |
| 955 |
|
| 956 |
uint32_t kvmppc_get_vmx(void)
|
| 957 |
{
|
| 958 |
return kvmppc_read_int_cpu_dt("ibm,vmx"); |
| 959 |
} |
| 960 |
|
| 961 |
uint32_t kvmppc_get_dfp(void)
|
| 962 |
{
|
| 963 |
return kvmppc_read_int_cpu_dt("ibm,dfp"); |
| 964 |
} |
| 965 |
|
| 966 |
int kvmppc_get_hypercall(CPUPPCState *env, uint8_t *buf, int buf_len) |
| 967 |
{
|
| 968 |
uint32_t *hc = (uint32_t*)buf; |
| 969 |
|
| 970 |
struct kvm_ppc_pvinfo pvinfo;
|
| 971 |
|
| 972 |
if (kvm_check_extension(env->kvm_state, KVM_CAP_PPC_GET_PVINFO) &&
|
| 973 |
!kvm_vm_ioctl(env->kvm_state, KVM_PPC_GET_PVINFO, &pvinfo)) {
|
| 974 |
memcpy(buf, pvinfo.hcall, buf_len); |
| 975 |
|
| 976 |
return 0; |
| 977 |
} |
| 978 |
|
| 979 |
/*
|
| 980 |
* Fallback to always fail hypercalls:
|
| 981 |
*
|
| 982 |
* li r3, -1
|
| 983 |
* nop
|
| 984 |
* nop
|
| 985 |
* nop
|
| 986 |
*/
|
| 987 |
|
| 988 |
hc[0] = 0x3860ffff; |
| 989 |
hc[1] = 0x60000000; |
| 990 |
hc[2] = 0x60000000; |
| 991 |
hc[3] = 0x60000000; |
| 992 |
|
| 993 |
return 0; |
| 994 |
} |
| 995 |
|
| 996 |
void kvmppc_set_papr(CPUPPCState *env)
|
| 997 |
{
|
| 998 |
struct kvm_enable_cap cap = {};
|
| 999 |
int ret;
|
| 1000 |
|
| 1001 |
cap.cap = KVM_CAP_PPC_PAPR; |
| 1002 |
ret = kvm_vcpu_ioctl(env, KVM_ENABLE_CAP, &cap); |
| 1003 |
|
| 1004 |
if (ret) {
|
| 1005 |
cpu_abort(env, "This KVM version does not support PAPR\n");
|
| 1006 |
} |
| 1007 |
} |
| 1008 |
|
| 1009 |
int kvmppc_smt_threads(void) |
| 1010 |
{
|
| 1011 |
return cap_ppc_smt ? cap_ppc_smt : 1; |
| 1012 |
} |
| 1013 |
|
| 1014 |
#ifdef TARGET_PPC64
|
| 1015 |
off_t kvmppc_alloc_rma(const char *name, MemoryRegion *sysmem) |
| 1016 |
{
|
| 1017 |
void *rma;
|
| 1018 |
off_t size; |
| 1019 |
int fd;
|
| 1020 |
struct kvm_allocate_rma ret;
|
| 1021 |
MemoryRegion *rma_region; |
| 1022 |
|
| 1023 |
/* If cap_ppc_rma == 0, contiguous RMA allocation is not supported
|
| 1024 |
* if cap_ppc_rma == 1, contiguous RMA allocation is supported, but
|
| 1025 |
* not necessary on this hardware
|
| 1026 |
* if cap_ppc_rma == 2, contiguous RMA allocation is needed on this hardware
|
| 1027 |
*
|
| 1028 |
* FIXME: We should allow the user to force contiguous RMA
|
| 1029 |
* allocation in the cap_ppc_rma==1 case.
|
| 1030 |
*/
|
| 1031 |
if (cap_ppc_rma < 2) { |
| 1032 |
return 0; |
| 1033 |
} |
| 1034 |
|
| 1035 |
fd = kvm_vm_ioctl(kvm_state, KVM_ALLOCATE_RMA, &ret); |
| 1036 |
if (fd < 0) { |
| 1037 |
fprintf(stderr, "KVM: Error on KVM_ALLOCATE_RMA: %s\n",
|
| 1038 |
strerror(errno)); |
| 1039 |
return -1; |
| 1040 |
} |
| 1041 |
|
| 1042 |
size = MIN(ret.rma_size, 256ul << 20); |
| 1043 |
|
| 1044 |
rma = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); |
| 1045 |
if (rma == MAP_FAILED) {
|
| 1046 |
fprintf(stderr, "KVM: Error mapping RMA: %s\n", strerror(errno));
|
| 1047 |
return -1; |
| 1048 |
}; |
| 1049 |
|
| 1050 |
rma_region = g_new(MemoryRegion, 1);
|
| 1051 |
memory_region_init_ram_ptr(rma_region, name, size, rma); |
| 1052 |
vmstate_register_ram_global(rma_region); |
| 1053 |
memory_region_add_subregion(sysmem, 0, rma_region);
|
| 1054 |
|
| 1055 |
return size;
|
| 1056 |
} |
| 1057 |
|
| 1058 |
uint64_t kvmppc_rma_size(uint64_t current_size, unsigned int hash_shift) |
| 1059 |
{
|
| 1060 |
if (cap_ppc_rma >= 2) { |
| 1061 |
return current_size;
|
| 1062 |
} |
| 1063 |
return MIN(current_size,
|
| 1064 |
getrampagesize() << (hash_shift - 7));
|
| 1065 |
} |
| 1066 |
#endif
|
| 1067 |
|
| 1068 |
void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t window_size, int *pfd) |
| 1069 |
{
|
| 1070 |
struct kvm_create_spapr_tce args = {
|
| 1071 |
.liobn = liobn, |
| 1072 |
.window_size = window_size, |
| 1073 |
}; |
| 1074 |
long len;
|
| 1075 |
int fd;
|
| 1076 |
void *table;
|
| 1077 |
|
| 1078 |
/* Must set fd to -1 so we don't try to munmap when called for
|
| 1079 |
* destroying the table, which the upper layers -will- do
|
| 1080 |
*/
|
| 1081 |
*pfd = -1;
|
| 1082 |
if (!cap_spapr_tce) {
|
| 1083 |
return NULL; |
| 1084 |
} |
| 1085 |
|
| 1086 |
fd = kvm_vm_ioctl(kvm_state, KVM_CREATE_SPAPR_TCE, &args); |
| 1087 |
if (fd < 0) { |
| 1088 |
fprintf(stderr, "KVM: Failed to create TCE table for liobn 0x%x\n",
|
| 1089 |
liobn); |
| 1090 |
return NULL; |
| 1091 |
} |
| 1092 |
|
| 1093 |
len = (window_size / SPAPR_TCE_PAGE_SIZE) * sizeof(sPAPRTCE);
|
| 1094 |
/* FIXME: round this up to page size */
|
| 1095 |
|
| 1096 |
table = mmap(NULL, len, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); |
| 1097 |
if (table == MAP_FAILED) {
|
| 1098 |
fprintf(stderr, "KVM: Failed to map TCE table for liobn 0x%x\n",
|
| 1099 |
liobn); |
| 1100 |
close(fd); |
| 1101 |
return NULL; |
| 1102 |
} |
| 1103 |
|
| 1104 |
*pfd = fd; |
| 1105 |
return table;
|
| 1106 |
} |
| 1107 |
|
| 1108 |
int kvmppc_remove_spapr_tce(void *table, int fd, uint32_t window_size) |
| 1109 |
{
|
| 1110 |
long len;
|
| 1111 |
|
| 1112 |
if (fd < 0) { |
| 1113 |
return -1; |
| 1114 |
} |
| 1115 |
|
| 1116 |
len = (window_size / SPAPR_TCE_PAGE_SIZE)*sizeof(sPAPRTCE);
|
| 1117 |
if ((munmap(table, len) < 0) || |
| 1118 |
(close(fd) < 0)) {
|
| 1119 |
fprintf(stderr, "KVM: Unexpected error removing TCE table: %s",
|
| 1120 |
strerror(errno)); |
| 1121 |
/* Leak the table */
|
| 1122 |
} |
| 1123 |
|
| 1124 |
return 0; |
| 1125 |
} |
| 1126 |
|
| 1127 |
int kvmppc_reset_htab(int shift_hint) |
| 1128 |
{
|
| 1129 |
uint32_t shift = shift_hint; |
| 1130 |
|
| 1131 |
if (!kvm_enabled()) {
|
| 1132 |
/* Full emulation, tell caller to allocate htab itself */
|
| 1133 |
return 0; |
| 1134 |
} |
| 1135 |
if (kvm_check_extension(kvm_state, KVM_CAP_PPC_ALLOC_HTAB)) {
|
| 1136 |
int ret;
|
| 1137 |
ret = kvm_vm_ioctl(kvm_state, KVM_PPC_ALLOCATE_HTAB, &shift); |
| 1138 |
if (ret == -ENOTTY) {
|
| 1139 |
/* At least some versions of PR KVM advertise the
|
| 1140 |
* capability, but don't implement the ioctl(). Oops.
|
| 1141 |
* Return 0 so that we allocate the htab in qemu, as is
|
| 1142 |
* correct for PR. */
|
| 1143 |
return 0; |
| 1144 |
} else if (ret < 0) { |
| 1145 |
return ret;
|
| 1146 |
} |
| 1147 |
return shift;
|
| 1148 |
} |
| 1149 |
|
| 1150 |
/* We have a kernel that predates the htab reset calls. For PR
|
| 1151 |
* KVM, we need to allocate the htab ourselves, for an HV KVM of
|
| 1152 |
* this era, it has allocated a 16MB fixed size hash table
|
| 1153 |
* already. Kernels of this era have the GET_PVINFO capability
|
| 1154 |
* only on PR, so we use this hack to determine the right
|
| 1155 |
* answer */
|
| 1156 |
if (kvm_check_extension(kvm_state, KVM_CAP_PPC_GET_PVINFO)) {
|
| 1157 |
/* PR - tell caller to allocate htab */
|
| 1158 |
return 0; |
| 1159 |
} else {
|
| 1160 |
/* HV - assume 16MB kernel allocated htab */
|
| 1161 |
return 24; |
| 1162 |
} |
| 1163 |
} |
| 1164 |
|
| 1165 |
static inline uint32_t mfpvr(void) |
| 1166 |
{
|
| 1167 |
uint32_t pvr; |
| 1168 |
|
| 1169 |
asm ("mfpvr %0" |
| 1170 |
: "=r"(pvr));
|
| 1171 |
return pvr;
|
| 1172 |
} |
| 1173 |
|
| 1174 |
static void alter_insns(uint64_t *word, uint64_t flags, bool on) |
| 1175 |
{
|
| 1176 |
if (on) {
|
| 1177 |
*word |= flags; |
| 1178 |
} else {
|
| 1179 |
*word &= ~flags; |
| 1180 |
} |
| 1181 |
} |
| 1182 |
|
| 1183 |
const ppc_def_t *kvmppc_host_cpu_def(void) |
| 1184 |
{
|
| 1185 |
uint32_t host_pvr = mfpvr(); |
| 1186 |
const ppc_def_t *base_spec;
|
| 1187 |
ppc_def_t *spec; |
| 1188 |
uint32_t vmx = kvmppc_get_vmx(); |
| 1189 |
uint32_t dfp = kvmppc_get_dfp(); |
| 1190 |
|
| 1191 |
base_spec = ppc_find_by_pvr(host_pvr); |
| 1192 |
|
| 1193 |
spec = g_malloc0(sizeof(*spec));
|
| 1194 |
memcpy(spec, base_spec, sizeof(*spec));
|
| 1195 |
|
| 1196 |
/* Now fix up the spec with information we can query from the host */
|
| 1197 |
|
| 1198 |
if (vmx != -1) { |
| 1199 |
/* Only override when we know what the host supports */
|
| 1200 |
alter_insns(&spec->insns_flags, PPC_ALTIVEC, vmx > 0);
|
| 1201 |
alter_insns(&spec->insns_flags2, PPC2_VSX, vmx > 1);
|
| 1202 |
} |
| 1203 |
if (dfp != -1) { |
| 1204 |
/* Only override when we know what the host supports */
|
| 1205 |
alter_insns(&spec->insns_flags2, PPC2_DFP, dfp); |
| 1206 |
} |
| 1207 |
|
| 1208 |
return spec;
|
| 1209 |
} |
| 1210 |
|
| 1211 |
int kvmppc_fixup_cpu(CPUPPCState *env)
|
| 1212 |
{
|
| 1213 |
int smt;
|
| 1214 |
|
| 1215 |
/* Adjust cpu index for SMT */
|
| 1216 |
smt = kvmppc_smt_threads(); |
| 1217 |
env->cpu_index = (env->cpu_index / smp_threads) * smt |
| 1218 |
+ (env->cpu_index % smp_threads); |
| 1219 |
|
| 1220 |
return 0; |
| 1221 |
} |
| 1222 |
|
| 1223 |
|
| 1224 |
bool kvm_arch_stop_on_emulation_error(CPUPPCState *env)
|
| 1225 |
{
|
| 1226 |
return true; |
| 1227 |
} |
| 1228 |
|
| 1229 |
int kvm_arch_on_sigbus_vcpu(CPUPPCState *env, int code, void *addr) |
| 1230 |
{
|
| 1231 |
return 1; |
| 1232 |
} |
| 1233 |
|
| 1234 |
int kvm_arch_on_sigbus(int code, void *addr) |
| 1235 |
{
|
| 1236 |
return 1; |
| 1237 |
} |