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authorPaolo Bonzini <pbonzini@redhat.com>2014-11-20 13:45:31 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2014-11-21 18:02:37 +0100
commit6ef768fac9dfe3404d3fdc09909ea203a88f2f38 (patch)
tree6bfd08a6a7527bc94b015fe7c0177af51efa5434 /virt
parentc32a42721ce67594e4481a961aa149055de9c1d9 (diff)
downloadlinux-6ef768fac9dfe3404d3fdc09909ea203a88f2f38.tar.gz
kvm: x86: move ioapic.c and irq_comm.c back to arch/x86/
ia64 does not need them anymore. Ack notifiers become x86-specific too. Suggested-by: Gleb Natapov <gleb@kernel.org> Reviewed-by: Radim Krcmar <rkrcmar@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/eventfd.c7
-rw-r--r--virt/kvm/ioapic.c682
-rw-r--r--virt/kvm/ioapic.h103
-rw-r--r--virt/kvm/irq_comm.c347
-rw-r--r--virt/kvm/kvm_main.c3
5 files changed, 0 insertions, 1142 deletions
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index b0fb390943c..148b2392c76 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -36,9 +36,6 @@
#include <linux/seqlock.h>
#include <trace/events/kvm.h>
-#ifdef __KVM_HAVE_IOAPIC
-#include "ioapic.h"
-#endif
#include "iodev.h"
#ifdef CONFIG_HAVE_KVM_IRQFD
@@ -492,9 +489,7 @@ void kvm_register_irq_ack_notifier(struct kvm *kvm,
mutex_lock(&kvm->irq_lock);
hlist_add_head_rcu(&kian->link, &kvm->irq_ack_notifier_list);
mutex_unlock(&kvm->irq_lock);
-#ifdef __KVM_HAVE_IOAPIC
kvm_vcpu_request_scan_ioapic(kvm);
-#endif
}
void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
@@ -504,9 +499,7 @@ void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
hlist_del_init_rcu(&kian->link);
mutex_unlock(&kvm->irq_lock);
synchronize_srcu(&kvm->irq_srcu);
-#ifdef __KVM_HAVE_IOAPIC
kvm_vcpu_request_scan_ioapic(kvm);
-#endif
}
#endif
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
deleted file mode 100644
index f0f7ef82b7a..00000000000
--- a/virt/kvm/ioapic.c
+++ /dev/null
@@ -1,682 +0,0 @@
-/*
- * Copyright (C) 2001 MandrakeSoft S.A.
- * Copyright 2010 Red Hat, Inc. and/or its affiliates.
- *
- * MandrakeSoft S.A.
- * 43, rue d'Aboukir
- * 75002 Paris - France
- * http://www.linux-mandrake.com/
- * http://www.mandrakesoft.com/
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Yunhong Jiang <yunhong.jiang@intel.com>
- * Yaozu (Eddie) Dong <eddie.dong@intel.com>
- * Based on Xen 3.1 code.
- */
-
-#include <linux/kvm_host.h>
-#include <linux/kvm.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/smp.h>
-#include <linux/hrtimer.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-#include <asm/current.h>
-#include <trace/events/kvm.h>
-
-#include "ioapic.h"
-#include "lapic.h"
-#include "irq.h"
-
-#if 0
-#define ioapic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg)
-#else
-#define ioapic_debug(fmt, arg...)
-#endif
-static int ioapic_service(struct kvm_ioapic *vioapic, int irq,
- bool line_status);
-
-static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
- unsigned long addr,
- unsigned long length)
-{
- unsigned long result = 0;
-
- switch (ioapic->ioregsel) {
- case IOAPIC_REG_VERSION:
- result = ((((IOAPIC_NUM_PINS - 1) & 0xff) << 16)
- | (IOAPIC_VERSION_ID & 0xff));
- break;
-
- case IOAPIC_REG_APIC_ID:
- case IOAPIC_REG_ARB_ID:
- result = ((ioapic->id & 0xf) << 24);
- break;
-
- default:
- {
- u32 redir_index = (ioapic->ioregsel - 0x10) >> 1;
- u64 redir_content;
-
- if (redir_index < IOAPIC_NUM_PINS)
- redir_content =
- ioapic->redirtbl[redir_index].bits;
- else
- redir_content = ~0ULL;
-
- result = (ioapic->ioregsel & 0x1) ?
- (redir_content >> 32) & 0xffffffff :
- redir_content & 0xffffffff;
- break;
- }
- }
-
- return result;
-}
-
-static void rtc_irq_eoi_tracking_reset(struct kvm_ioapic *ioapic)
-{
- ioapic->rtc_status.pending_eoi = 0;
- bitmap_zero(ioapic->rtc_status.dest_map, KVM_MAX_VCPUS);
-}
-
-static void kvm_rtc_eoi_tracking_restore_all(struct kvm_ioapic *ioapic);
-
-static void rtc_status_pending_eoi_check_valid(struct kvm_ioapic *ioapic)
-{
- if (WARN_ON(ioapic->rtc_status.pending_eoi < 0))
- kvm_rtc_eoi_tracking_restore_all(ioapic);
-}
-
-static void __rtc_irq_eoi_tracking_restore_one(struct kvm_vcpu *vcpu)
-{
- bool new_val, old_val;
- struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic;
- union kvm_ioapic_redirect_entry *e;
-
- e = &ioapic->redirtbl[RTC_GSI];
- if (!kvm_apic_match_dest(vcpu, NULL, 0, e->fields.dest_id,
- e->fields.dest_mode))
- return;
-
- new_val = kvm_apic_pending_eoi(vcpu, e->fields.vector);
- old_val = test_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map);
-
- if (new_val == old_val)
- return;
-
- if (new_val) {
- __set_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map);
- ioapic->rtc_status.pending_eoi++;
- } else {
- __clear_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map);
- ioapic->rtc_status.pending_eoi--;
- rtc_status_pending_eoi_check_valid(ioapic);
- }
-}
-
-void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu)
-{
- struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic;
-
- spin_lock(&ioapic->lock);
- __rtc_irq_eoi_tracking_restore_one(vcpu);
- spin_unlock(&ioapic->lock);
-}
-
-static void kvm_rtc_eoi_tracking_restore_all(struct kvm_ioapic *ioapic)
-{
- struct kvm_vcpu *vcpu;
- int i;
-
- if (RTC_GSI >= IOAPIC_NUM_PINS)
- return;
-
- rtc_irq_eoi_tracking_reset(ioapic);
- kvm_for_each_vcpu(i, vcpu, ioapic->kvm)
- __rtc_irq_eoi_tracking_restore_one(vcpu);
-}
-
-static void rtc_irq_eoi(struct kvm_ioapic *ioapic, struct kvm_vcpu *vcpu)
-{
- if (test_and_clear_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map)) {
- --ioapic->rtc_status.pending_eoi;
- rtc_status_pending_eoi_check_valid(ioapic);
- }
-}
-
-static bool rtc_irq_check_coalesced(struct kvm_ioapic *ioapic)
-{
- if (ioapic->rtc_status.pending_eoi > 0)
- return true; /* coalesced */
-
- return false;
-}
-
-static int ioapic_set_irq(struct kvm_ioapic *ioapic, unsigned int irq,
- int irq_level, bool line_status)
-{
- union kvm_ioapic_redirect_entry entry;
- u32 mask = 1 << irq;
- u32 old_irr;
- int edge, ret;
-
- entry = ioapic->redirtbl[irq];
- edge = (entry.fields.trig_mode == IOAPIC_EDGE_TRIG);
-
- if (!irq_level) {
- ioapic->irr &= ~mask;
- ret = 1;
- goto out;
- }
-
- /*
- * Return 0 for coalesced interrupts; for edge-triggered interrupts,
- * this only happens if a previous edge has not been delivered due
- * do masking. For level interrupts, the remote_irr field tells
- * us if the interrupt is waiting for an EOI.
- *
- * RTC is special: it is edge-triggered, but userspace likes to know
- * if it has been already ack-ed via EOI because coalesced RTC
- * interrupts lead to time drift in Windows guests. So we track
- * EOI manually for the RTC interrupt.
- */
- if (irq == RTC_GSI && line_status &&
- rtc_irq_check_coalesced(ioapic)) {
- ret = 0;
- goto out;
- }
-
- old_irr = ioapic->irr;
- ioapic->irr |= mask;
- if ((edge && old_irr == ioapic->irr) ||
- (!edge && entry.fields.remote_irr)) {
- ret = 0;
- goto out;
- }
-
- ret = ioapic_service(ioapic, irq, line_status);
-
-out:
- trace_kvm_ioapic_set_irq(entry.bits, irq, ret == 0);
- return ret;
-}
-
-static void kvm_ioapic_inject_all(struct kvm_ioapic *ioapic, unsigned long irr)
-{
- u32 idx;
-
- rtc_irq_eoi_tracking_reset(ioapic);
- for_each_set_bit(idx, &irr, IOAPIC_NUM_PINS)
- ioapic_set_irq(ioapic, idx, 1, true);
-
- kvm_rtc_eoi_tracking_restore_all(ioapic);
-}
-
-
-static void update_handled_vectors(struct kvm_ioapic *ioapic)
-{
- DECLARE_BITMAP(handled_vectors, 256);
- int i;
-
- memset(handled_vectors, 0, sizeof(handled_vectors));
- for (i = 0; i < IOAPIC_NUM_PINS; ++i)
- __set_bit(ioapic->redirtbl[i].fields.vector, handled_vectors);
- memcpy(ioapic->handled_vectors, handled_vectors,
- sizeof(handled_vectors));
- smp_wmb();
-}
-
-void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap,
- u32 *tmr)
-{
- struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic;
- union kvm_ioapic_redirect_entry *e;
- int index;
-
- spin_lock(&ioapic->lock);
- for (index = 0; index < IOAPIC_NUM_PINS; index++) {
- e = &ioapic->redirtbl[index];
- if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG ||
- kvm_irq_has_notifier(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index) ||
- index == RTC_GSI) {
- if (kvm_apic_match_dest(vcpu, NULL, 0,
- e->fields.dest_id, e->fields.dest_mode)) {
- __set_bit(e->fields.vector,
- (unsigned long *)eoi_exit_bitmap);
- if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG)
- __set_bit(e->fields.vector,
- (unsigned long *)tmr);
- }
- }
- }
- spin_unlock(&ioapic->lock);
-}
-
-#ifdef CONFIG_X86
-void kvm_vcpu_request_scan_ioapic(struct kvm *kvm)
-{
- struct kvm_ioapic *ioapic = kvm->arch.vioapic;
-
- if (!ioapic)
- return;
- kvm_make_scan_ioapic_request(kvm);
-}
-#else
-void kvm_vcpu_request_scan_ioapic(struct kvm *kvm)
-{
- return;
-}
-#endif
-
-static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
-{
- unsigned index;
- bool mask_before, mask_after;
- union kvm_ioapic_redirect_entry *e;
-
- switch (ioapic->ioregsel) {
- case IOAPIC_REG_VERSION:
- /* Writes are ignored. */
- break;
-
- case IOAPIC_REG_APIC_ID:
- ioapic->id = (val >> 24) & 0xf;
- break;
-
- case IOAPIC_REG_ARB_ID:
- break;
-
- default:
- index = (ioapic->ioregsel - 0x10) >> 1;
-
- ioapic_debug("change redir index %x val %x\n", index, val);
- if (index >= IOAPIC_NUM_PINS)
- return;
- e = &ioapic->redirtbl[index];
- mask_before = e->fields.mask;
- if (ioapic->ioregsel & 1) {
- e->bits &= 0xffffffff;
- e->bits |= (u64) val << 32;
- } else {
- e->bits &= ~0xffffffffULL;
- e->bits |= (u32) val;
- e->fields.remote_irr = 0;
- }
- update_handled_vectors(ioapic);
- mask_after = e->fields.mask;
- if (mask_before != mask_after)
- kvm_fire_mask_notifiers(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index, mask_after);
- if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG
- && ioapic->irr & (1 << index))
- ioapic_service(ioapic, index, false);
- kvm_vcpu_request_scan_ioapic(ioapic->kvm);
- break;
- }
-}
-
-static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
-{
- union kvm_ioapic_redirect_entry *entry = &ioapic->redirtbl[irq];
- struct kvm_lapic_irq irqe;
- int ret;
-
- if (entry->fields.mask)
- return -1;
-
- ioapic_debug("dest=%x dest_mode=%x delivery_mode=%x "
- "vector=%x trig_mode=%x\n",
- entry->fields.dest_id, entry->fields.dest_mode,
- entry->fields.delivery_mode, entry->fields.vector,
- entry->fields.trig_mode);
-
- irqe.dest_id = entry->fields.dest_id;
- irqe.vector = entry->fields.vector;
- irqe.dest_mode = entry->fields.dest_mode;
- irqe.trig_mode = entry->fields.trig_mode;
- irqe.delivery_mode = entry->fields.delivery_mode << 8;
- irqe.level = 1;
- irqe.shorthand = 0;
-
- if (irqe.trig_mode == IOAPIC_EDGE_TRIG)
- ioapic->irr &= ~(1 << irq);
-
- if (irq == RTC_GSI && line_status) {
- /*
- * pending_eoi cannot ever become negative (see
- * rtc_status_pending_eoi_check_valid) and the caller
- * ensures that it is only called if it is >= zero, namely
- * if rtc_irq_check_coalesced returns false).
- */
- BUG_ON(ioapic->rtc_status.pending_eoi != 0);
- ret = kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe,
- ioapic->rtc_status.dest_map);
- ioapic->rtc_status.pending_eoi = (ret < 0 ? 0 : ret);
- } else
- ret = kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe, NULL);
-
- if (ret && irqe.trig_mode == IOAPIC_LEVEL_TRIG)
- entry->fields.remote_irr = 1;
-
- return ret;
-}
-
-int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
- int level, bool line_status)
-{
- int ret, irq_level;
-
- BUG_ON(irq < 0 || irq >= IOAPIC_NUM_PINS);
-
- spin_lock(&ioapic->lock);
- irq_level = __kvm_irq_line_state(&ioapic->irq_states[irq],
- irq_source_id, level);
- ret = ioapic_set_irq(ioapic, irq, irq_level, line_status);
-
- spin_unlock(&ioapic->lock);
-
- return ret;
-}
-
-void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id)
-{
- int i;
-
- spin_lock(&ioapic->lock);
- for (i = 0; i < KVM_IOAPIC_NUM_PINS; i++)
- __clear_bit(irq_source_id, &ioapic->irq_states[i]);
- spin_unlock(&ioapic->lock);
-}
-
-static void kvm_ioapic_eoi_inject_work(struct work_struct *work)
-{
- int i;
- struct kvm_ioapic *ioapic = container_of(work, struct kvm_ioapic,
- eoi_inject.work);
- spin_lock(&ioapic->lock);
- for (i = 0; i < IOAPIC_NUM_PINS; i++) {
- union kvm_ioapic_redirect_entry *ent = &ioapic->redirtbl[i];
-
- if (ent->fields.trig_mode != IOAPIC_LEVEL_TRIG)
- continue;
-
- if (ioapic->irr & (1 << i) && !ent->fields.remote_irr)
- ioapic_service(ioapic, i, false);
- }
- spin_unlock(&ioapic->lock);
-}
-
-#define IOAPIC_SUCCESSIVE_IRQ_MAX_COUNT 10000
-
-static void __kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu,
- struct kvm_ioapic *ioapic, int vector, int trigger_mode)
-{
- int i;
-
- for (i = 0; i < IOAPIC_NUM_PINS; i++) {
- union kvm_ioapic_redirect_entry *ent = &ioapic->redirtbl[i];
-
- if (ent->fields.vector != vector)
- continue;
-
- if (i == RTC_GSI)
- rtc_irq_eoi(ioapic, vcpu);
- /*
- * We are dropping lock while calling ack notifiers because ack
- * notifier callbacks for assigned devices call into IOAPIC
- * recursively. Since remote_irr is cleared only after call
- * to notifiers if the same vector will be delivered while lock
- * is dropped it will be put into irr and will be delivered
- * after ack notifier returns.
- */
- spin_unlock(&ioapic->lock);
- kvm_notify_acked_irq(ioapic->kvm, KVM_IRQCHIP_IOAPIC, i);
- spin_lock(&ioapic->lock);
-
- if (trigger_mode != IOAPIC_LEVEL_TRIG)
- continue;
-
- ASSERT(ent->fields.trig_mode == IOAPIC_LEVEL_TRIG);
- ent->fields.remote_irr = 0;
- if (!ent->fields.mask && (ioapic->irr & (1 << i))) {
- ++ioapic->irq_eoi[i];
- if (ioapic->irq_eoi[i] == IOAPIC_SUCCESSIVE_IRQ_MAX_COUNT) {
- /*
- * Real hardware does not deliver the interrupt
- * immediately during eoi broadcast, and this
- * lets a buggy guest make slow progress
- * even if it does not correctly handle a
- * level-triggered interrupt. Emulate this
- * behavior if we detect an interrupt storm.
- */
- schedule_delayed_work(&ioapic->eoi_inject, HZ / 100);
- ioapic->irq_eoi[i] = 0;
- trace_kvm_ioapic_delayed_eoi_inj(ent->bits);
- } else {
- ioapic_service(ioapic, i, false);
- }
- } else {
- ioapic->irq_eoi[i] = 0;
- }
- }
-}
-
-bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector)
-{
- struct kvm_ioapic *ioapic = kvm->arch.vioapic;
- smp_rmb();
- return test_bit(vector, ioapic->handled_vectors);
-}
-
-void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector, int trigger_mode)
-{
- struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic;
-
- spin_lock(&ioapic->lock);
- __kvm_ioapic_update_eoi(vcpu, ioapic, vector, trigger_mode);
- spin_unlock(&ioapic->lock);
-}
-
-static inline struct kvm_ioapic *to_ioapic(struct kvm_io_device *dev)
-{
- return container_of(dev, struct kvm_ioapic, dev);
-}
-
-static inline int ioapic_in_range(struct kvm_ioapic *ioapic, gpa_t addr)
-{
- return ((addr >= ioapic->base_address &&
- (addr < ioapic->base_address + IOAPIC_MEM_LENGTH)));
-}
-
-static int ioapic_mmio_read(struct kvm_io_device *this, gpa_t addr, int len,
- void *val)
-{
- struct kvm_ioapic *ioapic = to_ioapic(this);
- u32 result;
- if (!ioapic_in_range(ioapic, addr))
- return -EOPNOTSUPP;
-
- ioapic_debug("addr %lx\n", (unsigned long)addr);
- ASSERT(!(addr & 0xf)); /* check alignment */
-
- addr &= 0xff;
- spin_lock(&ioapic->lock);
- switch (addr) {
- case IOAPIC_REG_SELECT:
- result = ioapic->ioregsel;
- break;
-
- case IOAPIC_REG_WINDOW:
- result = ioapic_read_indirect(ioapic, addr, len);
- break;
-
- default:
- result = 0;
- break;
- }
- spin_unlock(&ioapic->lock);
-
- switch (len) {
- case 8:
- *(u64 *) val = result;
- break;
- case 1:
- case 2:
- case 4:
- memcpy(val, (char *)&result, len);
- break;
- default:
- printk(KERN_WARNING "ioapic: wrong length %d\n", len);
- }
- return 0;
-}
-
-static int ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len,
- const void *val)
-{
- struct kvm_ioapic *ioapic = to_ioapic(this);
- u32 data;
- if (!ioapic_in_range(ioapic, addr))
- return -EOPNOTSUPP;
-
- ioapic_debug("ioapic_mmio_write addr=%p len=%d val=%p\n",
- (void*)addr, len, val);
- ASSERT(!(addr & 0xf)); /* check alignment */
-
- switch (len) {
- case 8:
- case 4:
- data = *(u32 *) val;
- break;
- case 2:
- data = *(u16 *) val;
- break;
- case 1:
- data = *(u8 *) val;
- break;
- default:
- printk(KERN_WARNING "ioapic: Unsupported size %d\n", len);
- return 0;
- }
-
- addr &= 0xff;
- spin_lock(&ioapic->lock);
- switch (addr) {
- case IOAPIC_REG_SELECT:
- ioapic->ioregsel = data & 0xFF; /* 8-bit register */
- break;
-
- case IOAPIC_REG_WINDOW:
- ioapic_write_indirect(ioapic, data);
- break;
-
- default:
- break;
- }
- spin_unlock(&ioapic->lock);
- return 0;
-}
-
-static void kvm_ioapic_reset(struct kvm_ioapic *ioapic)
-{
- int i;
-
- cancel_delayed_work_sync(&ioapic->eoi_inject);
- for (i = 0; i < IOAPIC_NUM_PINS; i++)
- ioapic->redirtbl[i].fields.mask = 1;
- ioapic->base_address = IOAPIC_DEFAULT_BASE_ADDRESS;
- ioapic->ioregsel = 0;
- ioapic->irr = 0;
- ioapic->id = 0;
- memset(ioapic->irq_eoi, 0x00, IOAPIC_NUM_PINS);
- rtc_irq_eoi_tracking_reset(ioapic);
- update_handled_vectors(ioapic);
-}
-
-static const struct kvm_io_device_ops ioapic_mmio_ops = {
- .read = ioapic_mmio_read,
- .write = ioapic_mmio_write,
-};
-
-int kvm_ioapic_init(struct kvm *kvm)
-{
- struct kvm_ioapic *ioapic;
- int ret;
-
- ioapic = kzalloc(sizeof(struct kvm_ioapic), GFP_KERNEL);
- if (!ioapic)
- return -ENOMEM;
- spin_lock_init(&ioapic->lock);
- INIT_DELAYED_WORK(&ioapic->eoi_inject, kvm_ioapic_eoi_inject_work);
- kvm->arch.vioapic = ioapic;
- kvm_ioapic_reset(ioapic);
- kvm_iodevice_init(&ioapic->dev, &ioapic_mmio_ops);
- ioapic->kvm = kvm;
- mutex_lock(&kvm->slots_lock);
- ret = kvm_io_bus_register_dev(kvm, KVM_MMIO_BUS, ioapic->base_address,
- IOAPIC_MEM_LENGTH, &ioapic->dev);
- mutex_unlock(&kvm->slots_lock);
- if (ret < 0) {
- kvm->arch.vioapic = NULL;
- kfree(ioapic);
- }
-
- return ret;
-}
-
-void kvm_ioapic_destroy(struct kvm *kvm)
-{
- struct kvm_ioapic *ioapic = kvm->arch.vioapic;
-
- cancel_delayed_work_sync(&ioapic->eoi_inject);
- if (ioapic) {
- kvm_io_bus_unregister_dev(kvm, KVM_MMIO_BUS, &ioapic->dev);
- kvm->arch.vioapic = NULL;
- kfree(ioapic);
- }
-}
-
-int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state)
-{
- struct kvm_ioapic *ioapic = ioapic_irqchip(kvm);
- if (!ioapic)
- return -EINVAL;
-
- spin_lock(&ioapic->lock);
- memcpy(state, ioapic, sizeof(struct kvm_ioapic_state));
- spin_unlock(&ioapic->lock);
- return 0;
-}
-
-int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state)
-{
- struct kvm_ioapic *ioapic = ioapic_irqchip(kvm);
- if (!ioapic)
- return -EINVAL;
-
- spin_lock(&ioapic->lock);
- memcpy(ioapic, state, sizeof(struct kvm_ioapic_state));
- ioapic->irr = 0;
- update_handled_vectors(ioapic);
- kvm_vcpu_request_scan_ioapic(kvm);
- kvm_ioapic_inject_all(ioapic, state->irr);
- spin_unlock(&ioapic->lock);
- return 0;
-}
diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h
deleted file mode 100644
index dc3baa3a538..00000000000
--- a/virt/kvm/ioapic.h
+++ /dev/null
@@ -1,103 +0,0 @@
-#ifndef __KVM_IO_APIC_H
-#define __KVM_IO_APIC_H
-
-#include <linux/kvm_host.h>
-
-#include "iodev.h"
-
-struct kvm;
-struct kvm_vcpu;
-
-#define IOAPIC_NUM_PINS KVM_IOAPIC_NUM_PINS
-#define IOAPIC_VERSION_ID 0x11 /* IOAPIC version */
-#define IOAPIC_EDGE_TRIG 0
-#define IOAPIC_LEVEL_TRIG 1
-
-#define IOAPIC_DEFAULT_BASE_ADDRESS 0xfec00000
-#define IOAPIC_MEM_LENGTH 0x100
-
-/* Direct registers. */
-#define IOAPIC_REG_SELECT 0x00
-#define IOAPIC_REG_WINDOW 0x10
-
-/* Indirect registers. */
-#define IOAPIC_REG_APIC_ID 0x00 /* x86 IOAPIC only */
-#define IOAPIC_REG_VERSION 0x01
-#define IOAPIC_REG_ARB_ID 0x02 /* x86 IOAPIC only */
-
-/*ioapic delivery mode*/
-#define IOAPIC_FIXED 0x0
-#define IOAPIC_LOWEST_PRIORITY 0x1
-#define IOAPIC_PMI 0x2
-#define IOAPIC_NMI 0x4
-#define IOAPIC_INIT 0x5
-#define IOAPIC_EXTINT 0x7
-
-#ifdef CONFIG_X86
-#define RTC_GSI 8
-#else
-#define RTC_GSI -1U
-#endif
-
-struct rtc_status {
- int pending_eoi;
- DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS);
-};
-
-struct kvm_ioapic {
- u64 base_address;
- u32 ioregsel;
- u32 id;
- u32 irr;
- u32 pad;
- union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
- unsigned long irq_states[IOAPIC_NUM_PINS];
- struct kvm_io_device dev;
- struct kvm *kvm;
- void (*ack_notifier)(void *opaque, int irq);
- spinlock_t lock;
- DECLARE_BITMAP(handled_vectors, 256);
- struct rtc_status rtc_status;
- struct delayed_work eoi_inject;
- u32 irq_eoi[IOAPIC_NUM_PINS];
-};
-
-#ifdef DEBUG
-#define ASSERT(x) \
-do { \
- if (!(x)) { \
- printk(KERN_EMERG "assertion failed %s: %d: %s\n", \
- __FILE__, __LINE__, #x); \
- BUG(); \
- } \
-} while (0)
-#else
-#define ASSERT(x) do { } while (0)
-#endif
-
-static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
-{
- return kvm->arch.vioapic;
-}
-
-void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
-int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
- int short_hand, unsigned int dest, int dest_mode);
-int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
-void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
- int trigger_mode);
-bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector);
-int kvm_ioapic_init(struct kvm *kvm);
-void kvm_ioapic_destroy(struct kvm *kvm);
-int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
- int level, bool line_status);
-void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
-int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
- struct kvm_lapic_irq *irq, unsigned long *dest_map);
-int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
-int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
-void kvm_vcpu_request_scan_ioapic(struct kvm *kvm);
-void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap,
- u32 *tmr);
-
-#endif
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
deleted file mode 100644
index 1345bde064f..00000000000
--- a/virt/kvm/irq_comm.c
+++ /dev/null
@@ -1,347 +0,0 @@
-/*
- * irq_comm.c: Common API for in kernel interrupt controller
- * Copyright (c) 2007, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- * Authors:
- * Yaozu (Eddie) Dong <Eddie.dong@intel.com>
- *
- * Copyright 2010 Red Hat, Inc. and/or its affiliates.
- */
-
-#include <linux/kvm_host.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <trace/events/kvm.h>
-
-#include <asm/msidef.h>
-
-#include "irq.h"
-
-#include "ioapic.h"
-
-static int kvm_set_pic_irq(struct kvm_kernel_irq_routing_entry *e,
- struct kvm *kvm, int irq_source_id, int level,
- bool line_status)
-{
-#ifdef CONFIG_X86
- struct kvm_pic *pic = pic_irqchip(kvm);
- return kvm_pic_set_irq(pic, e->irqchip.pin, irq_source_id, level);
-#else
- return -1;
-#endif
-}
-
-static int kvm_set_ioapic_irq(struct kvm_kernel_irq_routing_entry *e,
- struct kvm *kvm, int irq_source_id, int level,
- bool line_status)
-{
- struct kvm_ioapic *ioapic = kvm->arch.vioapic;
- return kvm_ioapic_set_irq(ioapic, e->irqchip.pin, irq_source_id, level,
- line_status);
-}
-
-inline static bool kvm_is_dm_lowest_prio(struct kvm_lapic_irq *irq)
-{
- return irq->delivery_mode == APIC_DM_LOWEST;
-}
-
-int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
- struct kvm_lapic_irq *irq, unsigned long *dest_map)
-{
- int i, r = -1;
- struct kvm_vcpu *vcpu, *lowest = NULL;
-
- if (irq->dest_mode == 0 && irq->dest_id == 0xff &&
- kvm_is_dm_lowest_prio(irq)) {
- printk(KERN_INFO "kvm: apic: phys broadcast and lowest prio\n");
- irq->delivery_mode = APIC_DM_FIXED;
- }
-
- if (kvm_irq_delivery_to_apic_fast(kvm, src, irq, &r, dest_map))
- return r;
-
- kvm_for_each_vcpu(i, vcpu, kvm) {
- if (!kvm_apic_present(vcpu))
- continue;
-
- if (!kvm_apic_match_dest(vcpu, src, irq->shorthand,
- irq->dest_id, irq->dest_mode))
- continue;
-
- if (!kvm_is_dm_lowest_prio(irq)) {
- if (r < 0)
- r = 0;
- r += kvm_apic_set_irq(vcpu, irq, dest_map);
- } else if (kvm_lapic_enabled(vcpu)) {
- if (!lowest)
- lowest = vcpu;
- else if (kvm_apic_compare_prio(vcpu, lowest) < 0)
- lowest = vcpu;
- }
- }
-
- if (lowest)
- r = kvm_apic_set_irq(lowest, irq, dest_map);
-
- return r;
-}
-
-static inline void kvm_set_msi_irq(struct kvm_kernel_irq_routing_entry *e,
- struct kvm_lapic_irq *irq)
-{
- trace_kvm_msi_set_irq(e->msi.address_lo, e->msi.data);
-
- irq->dest_id = (e->msi.address_lo &
- MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT;
- irq->vector = (e->msi.data &
- MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
- irq->dest_mode = (1 << MSI_ADDR_DEST_MODE_SHIFT) & e->msi.address_lo;
- irq->trig_mode = (1 << MSI_DATA_TRIGGER_SHIFT) & e->msi.data;
- irq->delivery_mode = e->msi.data & 0x700;
- irq->level = 1;
- irq->shorthand = 0;
- /* TODO Deal with RH bit of MSI message address */
-}
-
-int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
- struct kvm *kvm, int irq_source_id, int level, bool line_status)
-{
- struct kvm_lapic_irq irq;
-
- if (!level)
- return -1;
-
- kvm_set_msi_irq(e, &irq);
-
- return kvm_irq_delivery_to_apic(kvm, NULL, &irq, NULL);
-}
-
-
-static int kvm_set_msi_inatomic(struct kvm_kernel_irq_routing_entry *e,
- struct kvm *kvm)
-{
- struct kvm_lapic_irq irq;
- int r;
-
- kvm_set_msi_irq(e, &irq);
-
- if (kvm_irq_delivery_to_apic_fast(kvm, NULL, &irq, &r, NULL))
- return r;
- else
- return -EWOULDBLOCK;
-}
-
-/*
- * Deliver an IRQ in an atomic context if we can, or return a failure,
- * user can retry in a process context.
- * Return value:
- * -EWOULDBLOCK - Can't deliver in atomic context: retry in a process context.
- * Other values - No need to retry.
- */
-int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level)
-{
- struct kvm_kernel_irq_routing_entry entries[KVM_NR_IRQCHIPS];
- struct kvm_kernel_irq_routing_entry *e;
- int ret = -EINVAL;
- int idx;
-
- trace_kvm_set_irq(irq, level, irq_source_id);
-
- /*
- * Injection into either PIC or IOAPIC might need to scan all CPUs,
- * which would need to be retried from thread context; when same GSI
- * is connected to both PIC and IOAPIC, we'd have to report a
- * partial failure here.
- * Since there's no easy way to do this, we only support injecting MSI
- * which is limited to 1:1 GSI mapping.
- */
- idx = srcu_read_lock(&kvm->irq_srcu);
- if (kvm_irq_map_gsi(kvm, entries, irq) > 0) {
- e = &entries[0];
- if (likely(e->type == KVM_IRQ_ROUTING_MSI))
- ret = kvm_set_msi_inatomic(e, kvm);
- else
- ret = -EWOULDBLOCK;
- }
- srcu_read_unlock(&kvm->irq_srcu, idx);
- return ret;
-}
-
-int kvm_request_irq_source_id(struct kvm *kvm)
-{
- unsigned long *bitmap = &kvm->arch.irq_sources_bitmap;
- int irq_source_id;
-
- mutex_lock(&kvm->irq_lock);
- irq_source_id = find_first_zero_bit(bitmap, BITS_PER_LONG);
-
- if (irq_source_id >= BITS_PER_LONG) {
- printk(KERN_WARNING "kvm: exhaust allocatable IRQ sources!\n");
- irq_source_id = -EFAULT;
- goto unlock;
- }
-
- ASSERT(irq_source_id != KVM_USERSPACE_IRQ_SOURCE_ID);
-#ifdef CONFIG_X86
- ASSERT(irq_source_id != KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID);
-#endif
- set_bit(irq_source_id, bitmap);
-unlock:
- mutex_unlock(&kvm->irq_lock);
-
- return irq_source_id;
-}
-
-void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id)
-{
- ASSERT(irq_source_id != KVM_USERSPACE_IRQ_SOURCE_ID);
-#ifdef CONFIG_X86
- ASSERT(irq_source_id != KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID);
-#endif
-
- mutex_lock(&kvm->irq_lock);
- if (irq_source_id < 0 ||
- irq_source_id >= BITS_PER_LONG) {
- printk(KERN_ERR "kvm: IRQ source ID out of range!\n");
- goto unlock;
- }
- clear_bit(irq_source_id, &kvm->arch.irq_sources_bitmap);
- if (!irqchip_in_kernel(kvm))
- goto unlock;
-
- kvm_ioapic_clear_all(kvm->arch.vioapic, irq_source_id);
-#ifdef CONFIG_X86
- kvm_pic_clear_all(pic_irqchip(kvm), irq_source_id);
-#endif
-unlock:
- mutex_unlock(&kvm->irq_lock);
-}
-
-void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
- struct kvm_irq_mask_notifier *kimn)
-{
- mutex_lock(&kvm->irq_lock);
- kimn->irq = irq;
- hlist_add_head_rcu(&kimn->link, &kvm->mask_notifier_list);
- mutex_unlock(&kvm->irq_lock);
-}
-
-void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
- struct kvm_irq_mask_notifier *kimn)
-{
- mutex_lock(&kvm->irq_lock);
- hlist_del_rcu(&kimn->link);
- mutex_unlock(&kvm->irq_lock);
- synchronize_srcu(&kvm->irq_srcu);
-}
-
-void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
- bool mask)
-{
- struct kvm_irq_mask_notifier *kimn;
- int idx, gsi;
-
- idx = srcu_read_lock(&kvm->irq_srcu);
- gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);
- if (gsi != -1)
- hlist_for_each_entry_rcu(kimn, &kvm->mask_notifier_list, link)
- if (kimn->irq == gsi)
- kimn->func(kimn, mask);
- srcu_read_unlock(&kvm->irq_srcu, idx);
-}
-
-int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e,
- const struct kvm_irq_routing_entry *ue)
-{
- int r = -EINVAL;
- int delta;
- unsigned max_pin;
-
- switch (ue->type) {
- case KVM_IRQ_ROUTING_IRQCHIP:
- delta = 0;
- switch (ue->u.irqchip.irqchip) {
- case KVM_IRQCHIP_PIC_MASTER:
- e->set = kvm_set_pic_irq;
- max_pin = PIC_NUM_PINS;
- break;
- case KVM_IRQCHIP_PIC_SLAVE:
- e->set = kvm_set_pic_irq;
- max_pin = PIC_NUM_PINS;
- delta = 8;
- break;
- case KVM_IRQCHIP_IOAPIC:
- max_pin = KVM_IOAPIC_NUM_PINS;
- e->set = kvm_set_ioapic_irq;
- break;
- default:
- goto out;
- }
- e->irqchip.irqchip = ue->u.irqchip.irqchip;
- e->irqchip.pin = ue->u.irqchip.pin + delta;
- if (e->irqchip.pin >= max_pin)
- goto out;
- break;
- case KVM_IRQ_ROUTING_MSI:
- e->set = kvm_set_msi;
- e->msi.address_lo = ue->u.msi.address_lo;
- e->msi.address_hi = ue->u.msi.address_hi;
- e->msi.data = ue->u.msi.data;
- break;
- default:
- goto out;
- }
-
- r = 0;
-out:
- return r;
-}
-
-#define IOAPIC_ROUTING_ENTRY(irq) \
- { .gsi = irq, .type = KVM_IRQ_ROUTING_IRQCHIP, \
- .u.irqchip = { .irqchip = KVM_IRQCHIP_IOAPIC, .pin = (irq) } }
-#define ROUTING_ENTRY1(irq) IOAPIC_ROUTING_ENTRY(irq)
-
-#ifdef CONFIG_X86
-# define PIC_ROUTING_ENTRY(irq) \
- { .gsi = irq, .type = KVM_IRQ_ROUTING_IRQCHIP, \
- .u.irqchip = { .irqchip = SELECT_PIC(irq), .pin = (irq) % 8 } }
-# define ROUTING_ENTRY2(irq) \
- IOAPIC_ROUTING_ENTRY(irq), PIC_ROUTING_ENTRY(irq)
-#else
-# define ROUTING_ENTRY2(irq) \
- IOAPIC_ROUTING_ENTRY(irq)
-#endif
-
-static const struct kvm_irq_routing_entry default_routing[] = {
- ROUTING_ENTRY2(0), ROUTING_ENTRY2(1),
- ROUTING_ENTRY2(2), ROUTING_ENTRY2(3),
- ROUTING_ENTRY2(4), ROUTING_ENTRY2(5),
- ROUTING_ENTRY2(6), ROUTING_ENTRY2(7),
- ROUTING_ENTRY2(8), ROUTING_ENTRY2(9),
- ROUTING_ENTRY2(10), ROUTING_ENTRY2(11),
- ROUTING_ENTRY2(12), ROUTING_ENTRY2(13),
- ROUTING_ENTRY2(14), ROUTING_ENTRY2(15),
- ROUTING_ENTRY1(16), ROUTING_ENTRY1(17),
- ROUTING_ENTRY1(18), ROUTING_ENTRY1(19),
- ROUTING_ENTRY1(20), ROUTING_ENTRY1(21),
- ROUTING_ENTRY1(22), ROUTING_ENTRY1(23),
-};
-
-int kvm_setup_default_irq_routing(struct kvm *kvm)
-{
- return kvm_set_irq_routing(kvm, default_routing,
- ARRAY_SIZE(default_routing), 0);
-}
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 751ece6a595..3be43424818 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -468,9 +468,6 @@ static struct kvm *kvm_create_vm(unsigned long type)
if (r)
goto out_err_no_disable;
-#ifdef CONFIG_HAVE_KVM_IRQCHIP
- INIT_HLIST_HEAD(&kvm->mask_notifier_list);
-#endif
#ifdef CONFIG_HAVE_KVM_IRQFD
INIT_HLIST_HEAD(&kvm->irq_ack_notifier_list);
#endif