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KVM: arm/arm64: vgic-new: Wire up irqfd injection

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Connect to the new VGIC to the irqfd framework, so that we can
inject IRQs.
GSI routing and MSI routing is not yet implemented.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Andre Przywara 2016-03-25 00:04:53 +00:00 committed by Christoffer Dall
parent f7b6985cc3
commit 03f0c94c73
1 changed files with 52 additions and 0 deletions
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52
virt/kvm/arm/vgic/vgic-irqfd.c Normal file
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/*
* Copyright (C) 2015, 2016 ARM Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kvm.h>
#include <linux/kvm_host.h>
#include <trace/events/kvm.h>
int kvm_irq_map_gsi(struct kvm *kvm,
struct kvm_kernel_irq_routing_entry *entries,
int gsi)
{
return 0;
}
int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned int irqchip,
unsigned int pin)
{
return pin;
}
int kvm_set_irq(struct kvm *kvm, int irq_source_id,
u32 irq, int level, bool line_status)
{
unsigned int spi = irq + VGIC_NR_PRIVATE_IRQS;
trace_kvm_set_irq(irq, level, irq_source_id);
BUG_ON(!vgic_initialized(kvm));
return kvm_vgic_inject_irq(kvm, 0, spi, level);
}
/* MSI not implemented yet */
int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
struct kvm *kvm, int irq_source_id,
int level, bool line_status)
{
return 0;
}