threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
/*
|
|
* 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>
|
|
#include <kvm/arm_vgic.h>
|
|
#include "vgic.h"
|
|
|
|
/**
|
|
* vgic_irqfd_set_irq: inject the IRQ corresponding to the
|
|
* irqchip routing entry
|
|
*
|
|
* This is the entry point for irqfd IRQ injection
|
|
*/
|
|
static int vgic_irqfd_set_irq(struct kvm_kernel_irq_routing_entry *e,
|
|
struct kvm *kvm, int irq_source_id,
|
|
int level, bool line_status)
|
|
{
|
|
unsigned int spi_id = e->irqchip.pin + VGIC_NR_PRIVATE_IRQS;
|
|
|
|
if (!vgic_valid_spi(kvm, spi_id))
|
|
return -EINVAL;
|
|
return kvm_vgic_inject_irq(kvm, 0, spi_id, level, NULL);
|
|
}
|
|
|
|
/**
|
|
* kvm_set_routing_entry: populate a kvm routing entry
|
|
* from a user routing entry
|
|
*
|
|
* @kvm: the VM this entry is applied to
|
|
* @e: kvm kernel routing entry handle
|
|
* @ue: user api routing entry handle
|
|
* return 0 on success, -EINVAL on errors.
|
|
*/
|
|
int kvm_set_routing_entry(struct kvm *kvm,
|
|
struct kvm_kernel_irq_routing_entry *e,
|
|
const struct kvm_irq_routing_entry *ue)
|
|
{
|
|
int r = -EINVAL;
|
|
|
|
switch (ue->type) {
|
|
case KVM_IRQ_ROUTING_IRQCHIP:
|
|
e->set = vgic_irqfd_set_irq;
|
|
e->irqchip.irqchip = ue->u.irqchip.irqchip;
|
|
e->irqchip.pin = ue->u.irqchip.pin;
|
|
if ((e->irqchip.pin >= KVM_IRQCHIP_NUM_PINS) ||
|
|
(e->irqchip.irqchip >= KVM_NR_IRQCHIPS))
|
|
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;
|
|
e->msi.flags = ue->flags;
|
|
e->msi.devid = ue->u.msi.devid;
|
|
break;
|
|
default:
|
|
goto out;
|
|
}
|
|
r = 0;
|
|
out:
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* kvm_set_msi: inject the MSI corresponding to the
|
|
* MSI routing entry
|
|
*
|
|
* This is the entry point for irqfd MSI injection
|
|
* and userspace MSI injection.
|
|
*/
|
|
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_msi msi;
|
|
|
|
msi.address_lo = e->msi.address_lo;
|
|
msi.address_hi = e->msi.address_hi;
|
|
msi.data = e->msi.data;
|
|
msi.flags = e->msi.flags;
|
|
msi.devid = e->msi.devid;
|
|
|
|
if (!vgic_has_its(kvm))
|
|
return -ENODEV;
|
|
|
|
if (!level)
|
|
return -1;
|
|
|
|
return vgic_its_inject_msi(kvm, &msi);
|
|
}
|
|
|
|
int kvm_vgic_setup_default_irq_routing(struct kvm *kvm)
|
|
{
|
|
struct kvm_irq_routing_entry *entries;
|
|
struct vgic_dist *dist = &kvm->arch.vgic;
|
|
u32 nr = dist->nr_spis;
|
|
int i, ret;
|
|
|
|
entries = kcalloc(nr, sizeof(*entries), GFP_KERNEL);
|
|
if (!entries)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
entries[i].gsi = i;
|
|
entries[i].type = KVM_IRQ_ROUTING_IRQCHIP;
|
|
entries[i].u.irqchip.irqchip = 0;
|
|
entries[i].u.irqchip.pin = i;
|
|
}
|
|
ret = kvm_set_irq_routing(kvm, entries, nr, 0);
|
|
kfree(entries);
|
|
return ret;
|
|
}
|