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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>
This commit is contained in:
Paolo Bonzini
@@ -36,9 +36,6 @@
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#include <linux/seqlock.h>
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#include <trace/events/kvm.h>
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#ifdef __KVM_HAVE_IOAPIC
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#include "ioapic.h"
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#endif
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#include "iodev.h"
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#ifdef CONFIG_HAVE_KVM_IRQFD
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@@ -492,9 +489,7 @@ void kvm_register_irq_ack_notifier(struct kvm *kvm,
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mutex_lock(&kvm->irq_lock);
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hlist_add_head_rcu(&kian->link, &kvm->irq_ack_notifier_list);
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mutex_unlock(&kvm->irq_lock);
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#ifdef __KVM_HAVE_IOAPIC
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kvm_vcpu_request_scan_ioapic(kvm);
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#endif
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}
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void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
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@@ -504,9 +499,7 @@ void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
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hlist_del_init_rcu(&kian->link);
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mutex_unlock(&kvm->irq_lock);
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synchronize_srcu(&kvm->irq_srcu);
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#ifdef __KVM_HAVE_IOAPIC
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kvm_vcpu_request_scan_ioapic(kvm);
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#endif
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}
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#endif
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File diff suppressed because it is too large
Load Diff
@@ -1,103 +0,0 @@
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#ifndef __KVM_IO_APIC_H
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#define __KVM_IO_APIC_H
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#include <linux/kvm_host.h>
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#include "iodev.h"
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struct kvm;
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struct kvm_vcpu;
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#define IOAPIC_NUM_PINS KVM_IOAPIC_NUM_PINS
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#define IOAPIC_VERSION_ID 0x11 /* IOAPIC version */
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#define IOAPIC_EDGE_TRIG 0
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#define IOAPIC_LEVEL_TRIG 1
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#define IOAPIC_DEFAULT_BASE_ADDRESS 0xfec00000
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#define IOAPIC_MEM_LENGTH 0x100
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/* Direct registers. */
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#define IOAPIC_REG_SELECT 0x00
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#define IOAPIC_REG_WINDOW 0x10
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/* Indirect registers. */
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#define IOAPIC_REG_APIC_ID 0x00 /* x86 IOAPIC only */
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#define IOAPIC_REG_VERSION 0x01
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#define IOAPIC_REG_ARB_ID 0x02 /* x86 IOAPIC only */
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/*ioapic delivery mode*/
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#define IOAPIC_FIXED 0x0
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#define IOAPIC_LOWEST_PRIORITY 0x1
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#define IOAPIC_PMI 0x2
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#define IOAPIC_NMI 0x4
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#define IOAPIC_INIT 0x5
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#define IOAPIC_EXTINT 0x7
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#ifdef CONFIG_X86
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#define RTC_GSI 8
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#else
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#define RTC_GSI -1U
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#endif
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struct rtc_status {
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int pending_eoi;
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DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS);
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};
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struct kvm_ioapic {
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u64 base_address;
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u32 ioregsel;
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u32 id;
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u32 irr;
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u32 pad;
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union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
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unsigned long irq_states[IOAPIC_NUM_PINS];
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struct kvm_io_device dev;
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struct kvm *kvm;
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void (*ack_notifier)(void *opaque, int irq);
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spinlock_t lock;
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DECLARE_BITMAP(handled_vectors, 256);
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struct rtc_status rtc_status;
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struct delayed_work eoi_inject;
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u32 irq_eoi[IOAPIC_NUM_PINS];
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};
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#ifdef DEBUG
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#define ASSERT(x) \
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do { \
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if (!(x)) { \
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printk(KERN_EMERG "assertion failed %s: %d: %s\n", \
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__FILE__, __LINE__, #x); \
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BUG(); \
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} \
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} while (0)
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#else
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#define ASSERT(x) do { } while (0)
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#endif
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static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
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{
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return kvm->arch.vioapic;
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}
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void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
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int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
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int short_hand, unsigned int dest, int dest_mode);
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int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
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void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
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int trigger_mode);
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bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector);
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int kvm_ioapic_init(struct kvm *kvm);
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void kvm_ioapic_destroy(struct kvm *kvm);
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int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
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int level, bool line_status);
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void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
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int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
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struct kvm_lapic_irq *irq, unsigned long *dest_map);
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int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
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int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
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void kvm_vcpu_request_scan_ioapic(struct kvm *kvm);
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void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap,
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u32 *tmr);
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#endif
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@@ -1,347 +0,0 @@
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/*
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* irq_comm.c: Common API for in kernel interrupt controller
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* Copyright (c) 2007, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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* Authors:
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* Yaozu (Eddie) Dong <Eddie.dong@intel.com>
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*
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* Copyright 2010 Red Hat, Inc. and/or its affiliates.
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*/
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#include <linux/kvm_host.h>
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#include <linux/slab.h>
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#include <linux/export.h>
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#include <trace/events/kvm.h>
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#include <asm/msidef.h>
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#include "irq.h"
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#include "ioapic.h"
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static int kvm_set_pic_irq(struct kvm_kernel_irq_routing_entry *e,
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struct kvm *kvm, int irq_source_id, int level,
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bool line_status)
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{
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#ifdef CONFIG_X86
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struct kvm_pic *pic = pic_irqchip(kvm);
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return kvm_pic_set_irq(pic, e->irqchip.pin, irq_source_id, level);
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#else
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return -1;
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#endif
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}
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static int kvm_set_ioapic_irq(struct kvm_kernel_irq_routing_entry *e,
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struct kvm *kvm, int irq_source_id, int level,
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bool line_status)
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{
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struct kvm_ioapic *ioapic = kvm->arch.vioapic;
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return kvm_ioapic_set_irq(ioapic, e->irqchip.pin, irq_source_id, level,
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line_status);
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}
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inline static bool kvm_is_dm_lowest_prio(struct kvm_lapic_irq *irq)
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{
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return irq->delivery_mode == APIC_DM_LOWEST;
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}
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int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
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struct kvm_lapic_irq *irq, unsigned long *dest_map)
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{
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int i, r = -1;
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struct kvm_vcpu *vcpu, *lowest = NULL;
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if (irq->dest_mode == 0 && irq->dest_id == 0xff &&
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kvm_is_dm_lowest_prio(irq)) {
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printk(KERN_INFO "kvm: apic: phys broadcast and lowest prio\n");
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irq->delivery_mode = APIC_DM_FIXED;
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}
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if (kvm_irq_delivery_to_apic_fast(kvm, src, irq, &r, dest_map))
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return r;
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kvm_for_each_vcpu(i, vcpu, kvm) {
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if (!kvm_apic_present(vcpu))
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continue;
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if (!kvm_apic_match_dest(vcpu, src, irq->shorthand,
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irq->dest_id, irq->dest_mode))
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continue;
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if (!kvm_is_dm_lowest_prio(irq)) {
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if (r < 0)
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r = 0;
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r += kvm_apic_set_irq(vcpu, irq, dest_map);
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} else if (kvm_lapic_enabled(vcpu)) {
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if (!lowest)
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lowest = vcpu;
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else if (kvm_apic_compare_prio(vcpu, lowest) < 0)
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lowest = vcpu;
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}
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}
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if (lowest)
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r = kvm_apic_set_irq(lowest, irq, dest_map);
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return r;
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}
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static inline void kvm_set_msi_irq(struct kvm_kernel_irq_routing_entry *e,
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struct kvm_lapic_irq *irq)
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{
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trace_kvm_msi_set_irq(e->msi.address_lo, e->msi.data);
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irq->dest_id = (e->msi.address_lo &
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MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT;
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irq->vector = (e->msi.data &
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MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
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irq->dest_mode = (1 << MSI_ADDR_DEST_MODE_SHIFT) & e->msi.address_lo;
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irq->trig_mode = (1 << MSI_DATA_TRIGGER_SHIFT) & e->msi.data;
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irq->delivery_mode = e->msi.data & 0x700;
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irq->level = 1;
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irq->shorthand = 0;
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/* TODO Deal with RH bit of MSI message address */
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}
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int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
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struct kvm *kvm, int irq_source_id, int level, bool line_status)
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{
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struct kvm_lapic_irq irq;
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if (!level)
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return -1;
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kvm_set_msi_irq(e, &irq);
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return kvm_irq_delivery_to_apic(kvm, NULL, &irq, NULL);
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}
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static int kvm_set_msi_inatomic(struct kvm_kernel_irq_routing_entry *e,
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struct kvm *kvm)
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{
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struct kvm_lapic_irq irq;
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int r;
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kvm_set_msi_irq(e, &irq);
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if (kvm_irq_delivery_to_apic_fast(kvm, NULL, &irq, &r, NULL))
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return r;
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else
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return -EWOULDBLOCK;
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}
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/*
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* Deliver an IRQ in an atomic context if we can, or return a failure,
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* user can retry in a process context.
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* Return value:
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* -EWOULDBLOCK - Can't deliver in atomic context: retry in a process context.
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* Other values - No need to retry.
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*/
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int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level)
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{
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struct kvm_kernel_irq_routing_entry entries[KVM_NR_IRQCHIPS];
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struct kvm_kernel_irq_routing_entry *e;
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int ret = -EINVAL;
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int idx;
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trace_kvm_set_irq(irq, level, irq_source_id);
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/*
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* Injection into either PIC or IOAPIC might need to scan all CPUs,
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* which would need to be retried from thread context; when same GSI
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* is connected to both PIC and IOAPIC, we'd have to report a
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* partial failure here.
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* Since there's no easy way to do this, we only support injecting MSI
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* which is limited to 1:1 GSI mapping.
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*/
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idx = srcu_read_lock(&kvm->irq_srcu);
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if (kvm_irq_map_gsi(kvm, entries, irq) > 0) {
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e = &entries[0];
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if (likely(e->type == KVM_IRQ_ROUTING_MSI))
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ret = kvm_set_msi_inatomic(e, kvm);
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else
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ret = -EWOULDBLOCK;
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}
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srcu_read_unlock(&kvm->irq_srcu, idx);
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return ret;
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}
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int kvm_request_irq_source_id(struct kvm *kvm)
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{
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unsigned long *bitmap = &kvm->arch.irq_sources_bitmap;
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int irq_source_id;
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mutex_lock(&kvm->irq_lock);
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irq_source_id = find_first_zero_bit(bitmap, BITS_PER_LONG);
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if (irq_source_id >= BITS_PER_LONG) {
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printk(KERN_WARNING "kvm: exhaust allocatable IRQ sources!\n");
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irq_source_id = -EFAULT;
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goto unlock;
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}
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ASSERT(irq_source_id != KVM_USERSPACE_IRQ_SOURCE_ID);
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#ifdef CONFIG_X86
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ASSERT(irq_source_id != KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID);
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#endif
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set_bit(irq_source_id, bitmap);
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unlock:
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mutex_unlock(&kvm->irq_lock);
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return irq_source_id;
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}
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void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id)
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{
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ASSERT(irq_source_id != KVM_USERSPACE_IRQ_SOURCE_ID);
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#ifdef CONFIG_X86
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ASSERT(irq_source_id != KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID);
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#endif
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mutex_lock(&kvm->irq_lock);
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if (irq_source_id < 0 ||
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irq_source_id >= BITS_PER_LONG) {
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printk(KERN_ERR "kvm: IRQ source ID out of range!\n");
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goto unlock;
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}
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clear_bit(irq_source_id, &kvm->arch.irq_sources_bitmap);
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if (!irqchip_in_kernel(kvm))
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goto unlock;
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kvm_ioapic_clear_all(kvm->arch.vioapic, irq_source_id);
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#ifdef CONFIG_X86
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kvm_pic_clear_all(pic_irqchip(kvm), irq_source_id);
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#endif
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unlock:
|
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mutex_unlock(&kvm->irq_lock);
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}
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|
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void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
|
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struct kvm_irq_mask_notifier *kimn)
|
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{
|
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mutex_lock(&kvm->irq_lock);
|
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kimn->irq = irq;
|
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hlist_add_head_rcu(&kimn->link, &kvm->mask_notifier_list);
|
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mutex_unlock(&kvm->irq_lock);
|
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}
|
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|
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void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
|
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struct kvm_irq_mask_notifier *kimn)
|
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{
|
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mutex_lock(&kvm->irq_lock);
|
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hlist_del_rcu(&kimn->link);
|
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mutex_unlock(&kvm->irq_lock);
|
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synchronize_srcu(&kvm->irq_srcu);
|
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}
|
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|
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void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
|
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bool mask)
|
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{
|
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struct kvm_irq_mask_notifier *kimn;
|
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int idx, gsi;
|
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|
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idx = srcu_read_lock(&kvm->irq_srcu);
|
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gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);
|
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if (gsi != -1)
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hlist_for_each_entry_rcu(kimn, &kvm->mask_notifier_list, link)
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if (kimn->irq == gsi)
|
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kimn->func(kimn, mask);
|
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srcu_read_unlock(&kvm->irq_srcu, idx);
|
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}
|
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|
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int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e,
|
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const struct kvm_irq_routing_entry *ue)
|
||||
{
|
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int r = -EINVAL;
|
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int delta;
|
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unsigned max_pin;
|
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|
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switch (ue->type) {
|
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case KVM_IRQ_ROUTING_IRQCHIP:
|
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delta = 0;
|
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switch (ue->u.irqchip.irqchip) {
|
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case KVM_IRQCHIP_PIC_MASTER:
|
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e->set = kvm_set_pic_irq;
|
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max_pin = PIC_NUM_PINS;
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break;
|
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case KVM_IRQCHIP_PIC_SLAVE:
|
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e->set = kvm_set_pic_irq;
|
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max_pin = PIC_NUM_PINS;
|
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delta = 8;
|
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break;
|
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case KVM_IRQCHIP_IOAPIC:
|
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max_pin = KVM_IOAPIC_NUM_PINS;
|
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e->set = kvm_set_ioapic_irq;
|
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break;
|
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default:
|
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goto out;
|
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}
|
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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);
|
||||
}
|
||||
@@ -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
|
||||
|
||||
Reference in New Issue
Block a user