From: Tianrui Zhao <zhaotianrui@loongson.cn>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Huacai Chen <chenhuacai@kernel.org>,
WANG Xuerui <kernel@xen0n.name>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
loongarch@lists.linux.dev, Jens Axboe <axboe@kernel.dk>,
Mark Brown <broonie@kernel.org>,
Alex Deucher <alexander.deucher@amd.com>,
Oliver Upton <oliver.upton@linux.dev>,
maobibo@loongson.cn, Xi Ruoyao <xry111@xry111.site>,
zhaotianrui@loongson.cn
Subject: [PATCH v12 12/31] LoongArch: KVM: Implement vcpu interrupt operations
Date: Tue, 30 May 2023 09:52:04 +0800 [thread overview]
Message-ID: <20230530015223.147755-13-zhaotianrui@loongson.cn> (raw)
In-Reply-To: <20230530015223.147755-1-zhaotianrui@loongson.cn>
Implement vcpu interrupt operations such as vcpu set irq and
vcpu clear irq, using set_gcsr_estat to set irq which is
parsed by the irq bitmap.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
---
arch/loongarch/kvm/interrupt.c | 127 +++++++++++++++++++++++++++++++++
arch/loongarch/kvm/vcpu.c | 45 ++++++++++++
2 files changed, 172 insertions(+)
create mode 100644 arch/loongarch/kvm/interrupt.c
diff --git a/arch/loongarch/kvm/interrupt.c b/arch/loongarch/kvm/interrupt.c
new file mode 100644
index 000000000000..243bb19b387e
--- /dev/null
+++ b/arch/loongarch/kvm/interrupt.c
@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020-2023 Loongson Technology Corporation Limited
+ */
+
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <asm/kvm_vcpu.h>
+#include <asm/kvm_csr.h>
+
+static unsigned int int_to_coreint[EXCCODE_INT_NUM] = {
+ [INT_TI] = CPU_TIMER,
+ [INT_IPI] = CPU_IPI,
+ [INT_SWI0] = CPU_SIP0,
+ [INT_SWI1] = CPU_SIP1,
+ [INT_HWI0] = CPU_IP0,
+ [INT_HWI1] = CPU_IP1,
+ [INT_HWI2] = CPU_IP2,
+ [INT_HWI3] = CPU_IP3,
+ [INT_HWI4] = CPU_IP4,
+ [INT_HWI5] = CPU_IP5,
+ [INT_HWI6] = CPU_IP6,
+ [INT_HWI7] = CPU_IP7,
+};
+
+static int _kvm_irq_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
+{
+ unsigned int irq = 0;
+
+ clear_bit(priority, &vcpu->arch.irq_pending);
+ if (priority < EXCCODE_INT_NUM)
+ irq = int_to_coreint[priority];
+
+ switch (priority) {
+ case INT_TI:
+ case INT_IPI:
+ case INT_SWI0:
+ case INT_SWI1:
+ set_gcsr_estat(irq);
+ break;
+
+ case INT_HWI0:
+ case INT_HWI1:
+ case INT_HWI2:
+ case INT_HWI3:
+ case INT_HWI4:
+ case INT_HWI5:
+ case INT_HWI6:
+ case INT_HWI7:
+ set_csr_gintc(irq);
+ break;
+
+ default:
+ break;
+ }
+
+ return 1;
+}
+
+static int _kvm_irq_clear(struct kvm_vcpu *vcpu, unsigned int priority)
+{
+ unsigned int irq = 0;
+
+ clear_bit(priority, &vcpu->arch.irq_clear);
+ if (priority < EXCCODE_INT_NUM)
+ irq = int_to_coreint[priority];
+
+ switch (priority) {
+ case INT_TI:
+ case INT_IPI:
+ case INT_SWI0:
+ case INT_SWI1:
+ clear_gcsr_estat(irq);
+ break;
+
+ case INT_HWI0:
+ case INT_HWI1:
+ case INT_HWI2:
+ case INT_HWI3:
+ case INT_HWI4:
+ case INT_HWI5:
+ case INT_HWI6:
+ case INT_HWI7:
+ clear_csr_gintc(irq);
+ break;
+
+ default:
+ break;
+ }
+
+ return 1;
+}
+
+void _kvm_deliver_intr(struct kvm_vcpu *vcpu)
+{
+ unsigned long *pending = &vcpu->arch.irq_pending;
+ unsigned long *pending_clr = &vcpu->arch.irq_clear;
+ unsigned int priority;
+
+ if (!(*pending) && !(*pending_clr))
+ return;
+
+ if (*pending_clr) {
+ priority = __ffs(*pending_clr);
+ while (priority <= INT_IPI) {
+ _kvm_irq_clear(vcpu, priority);
+ priority = find_next_bit(pending_clr,
+ BITS_PER_BYTE * sizeof(*pending_clr),
+ priority + 1);
+ }
+ }
+
+ if (*pending) {
+ priority = __ffs(*pending);
+ while (priority <= INT_IPI) {
+ _kvm_irq_deliver(vcpu, priority);
+ priority = find_next_bit(pending,
+ BITS_PER_BYTE * sizeof(*pending),
+ priority + 1);
+ }
+ }
+}
+
+int _kvm_pending_timer(struct kvm_vcpu *vcpu)
+{
+ return test_bit(INT_TI, &vcpu->arch.irq_pending);
+}
diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c
index 60213f7f7bac..f661743dbe66 100644
--- a/arch/loongarch/kvm/vcpu.c
+++ b/arch/loongarch/kvm/vcpu.c
@@ -304,6 +304,51 @@ void kvm_lose_fpu(struct kvm_vcpu *vcpu)
preempt_enable();
}
+int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
+ struct kvm_loongarch_interrupt *irq)
+{
+ int intr = (int)irq->irq;
+ struct kvm_vcpu *dvcpu = NULL;
+
+ if (irq->cpu == -1)
+ dvcpu = vcpu;
+ else
+ dvcpu = kvm_get_vcpu(vcpu->kvm, irq->cpu);
+
+ if (intr > 0)
+ _kvm_queue_irq(dvcpu, intr);
+ else if (intr < 0)
+ _kvm_dequeue_irq(dvcpu, -intr);
+ else {
+ kvm_err("%s: invalid interrupt ioctl (%d:%d)\n", __func__,
+ irq->cpu, irq->irq);
+ return -EINVAL;
+ }
+
+ kvm_vcpu_kick(dvcpu);
+ return 0;
+}
+
+long kvm_arch_vcpu_async_ioctl(struct file *filp,
+ unsigned int ioctl, unsigned long arg)
+{
+ struct kvm_vcpu *vcpu = filp->private_data;
+ void __user *argp = (void __user *)arg;
+
+ if (ioctl == KVM_INTERRUPT) {
+ struct kvm_loongarch_interrupt irq;
+
+ if (copy_from_user(&irq, argp, sizeof(irq)))
+ return -EFAULT;
+ kvm_debug("[%d] %s: irq: %d\n", vcpu->vcpu_id, __func__,
+ irq.irq);
+
+ return kvm_vcpu_ioctl_interrupt(vcpu, &irq);
+ }
+
+ return -ENOIOCTLCMD;
+}
+
int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id)
{
return 0;
--
2.39.1
next prev parent reply other threads:[~2023-05-30 1:53 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-30 1:51 [PATCH v12 00/31] Add KVM LoongArch support Tianrui Zhao
2023-05-30 1:51 ` [PATCH v12 01/31] LoongArch: KVM: Add kvm related header files Tianrui Zhao
2023-06-05 5:00 ` Huacai Chen
2023-06-05 10:18 ` Paolo Bonzini
2023-06-05 12:22 ` bibo, mao
2023-06-06 6:30 ` Youling Tang
2023-06-06 10:00 ` Tianrui Zhao
2023-05-30 1:51 ` [PATCH v12 02/31] LoongArch: KVM: Implement kvm module related interface Tianrui Zhao
2023-06-05 12:27 ` bibo, mao
2023-05-30 1:51 ` [PATCH v12 03/31] LoongArch: KVM: Implement kvm hardware enable, disable interface Tianrui Zhao
2023-05-30 1:51 ` [PATCH v12 04/31] LoongArch: KVM: Implement VM related functions Tianrui Zhao
2023-06-05 12:31 ` bibo, mao
2023-05-30 1:51 ` [PATCH v12 05/31] LoongArch: KVM: Add vcpu related header files Tianrui Zhao
2023-06-05 12:42 ` bibo, mao
2023-06-06 2:00 ` Tianrui Zhao
2023-05-30 1:51 ` [PATCH v12 06/31] LoongArch: KVM: Implement vcpu create and destroy interface Tianrui Zhao
2023-06-05 12:44 ` bibo, mao
2023-05-30 1:51 ` [PATCH v12 07/31] LoongArch: KVM: Implement vcpu run interface Tianrui Zhao
2023-06-05 12:53 ` bibo, mao
2023-06-06 2:02 ` Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 08/31] LoongArch: KVM: Implement vcpu handle exit interface Tianrui Zhao
2023-06-05 13:03 ` bibo, mao
2023-06-06 2:13 ` Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 09/31] LoongArch: KVM: Implement vcpu get, vcpu set registers Tianrui Zhao
2023-06-05 13:04 ` bibo, mao
2023-06-06 6:41 ` Youling Tang
2023-06-06 9:12 ` Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 10/31] LoongArch: KVM: Implement vcpu ENABLE_CAP ioctl interface Tianrui Zhao
2023-06-05 13:12 ` bibo, mao
2023-06-06 3:20 ` Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 11/31] LoongArch: KVM: Implement fpu related operations for vcpu Tianrui Zhao
2023-06-05 13:13 ` bibo, mao
2023-05-30 1:52 ` Tianrui Zhao [this message]
2023-06-05 13:13 ` [PATCH v12 12/31] LoongArch: KVM: Implement vcpu interrupt operations bibo, mao
2023-06-06 6:49 ` Youling Tang
2023-06-06 9:13 ` Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 13/31] LoongArch: KVM: Implement misc vcpu related interfaces Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 14/31] LoongArch: KVM: Implement vcpu load and vcpu put operations Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 15/31] LoongArch: KVM: Implement vcpu status description Tianrui Zhao
2023-06-05 13:04 ` bibo, mao
2023-05-30 1:52 ` [PATCH v12 16/31] LoongArch: KVM: Implement update VM id function Tianrui Zhao
2023-06-06 1:13 ` bibo, mao
2023-05-30 1:52 ` [PATCH v12 17/31] LoongArch: KVM: Implement virtual machine tlb operations Tianrui Zhao
2023-06-06 1:20 ` bibo, mao
2023-05-30 1:52 ` [PATCH v12 18/31] LoongArch: KVM: Implement vcpu timer operations Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 19/31] LoongArch: KVM: Implement kvm mmu operations Tianrui Zhao
2023-06-06 1:28 ` bibo, mao
2023-06-06 2:51 ` Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 20/31] LoongArch: KVM: Implement handle csr excption Tianrui Zhao
2023-06-06 1:35 ` bibo, mao
2023-06-06 2:59 ` Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 21/31] LoongArch: KVM: Implement handle iocsr exception Tianrui Zhao
2023-06-06 1:36 ` bibo, mao
2023-05-30 1:52 ` [PATCH v12 22/31] LoongArch: KVM: Implement handle idle exception Tianrui Zhao
2023-06-06 1:36 ` bibo, mao
2023-05-30 1:52 ` [PATCH v12 23/31] LoongArch: KVM: Implement handle gspr exception Tianrui Zhao
2023-06-06 1:38 ` bibo, mao
2023-05-30 1:52 ` [PATCH v12 24/31] LoongArch: KVM: Implement handle mmio exception Tianrui Zhao
2023-06-06 1:41 ` bibo, mao
2023-05-30 1:52 ` [PATCH v12 25/31] LoongArch: KVM: Implement handle fpu exception Tianrui Zhao
2023-06-06 1:42 ` bibo, mao
2023-05-30 1:52 ` [PATCH v12 26/31] LoongArch: KVM: Implement kvm exception vector Tianrui Zhao
2023-06-06 1:43 ` bibo, mao
2023-06-06 7:00 ` Youling Tang
2023-06-06 9:16 ` Tianrui Zhao
2023-06-08 11:44 ` 赵天瑞
2023-05-30 1:52 ` [PATCH v12 27/31] LoongArch: KVM: Implement vcpu world switch Tianrui Zhao
2023-06-06 2:27 ` bibo, mao
2023-05-30 1:52 ` [PATCH v12 28/31] LoongArch: KVM: Implement probe virtualization when LoongArch cpu init Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 29/31] LoongArch: KVM: Enable kvm config and add the makefile Tianrui Zhao
2023-06-06 2:37 ` bibo, mao
2023-05-30 1:52 ` [PATCH v12 30/31] LoongArch: KVM: Supplement kvm document about LoongArch-specific part Tianrui Zhao
2023-05-30 1:52 ` [PATCH v12 31/31] LoongArch: KVM: Add maintainers for LoongArch KVM Tianrui Zhao
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