From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/mips/kvm/interrupt.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 arch/mips/kvm/interrupt.c

(limited to 'arch/mips/kvm/interrupt.c')

diff --git a/arch/mips/kvm/interrupt.c b/arch/mips/kvm/interrupt.c
new file mode 100644
index 000000000..027794227
--- /dev/null
+++ b/arch/mips/kvm/interrupt.c
@@ -0,0 +1,56 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * KVM/MIPS: Interrupt delivery
+ *
+ * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
+ * Authors: Sanjay Lal <sanjayl@kymasys.com>
+ */
+
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/vmalloc.h>
+#include <linux/fs.h>
+#include <linux/memblock.h>
+#include <asm/page.h>
+#include <asm/cacheflush.h>
+
+#include <linux/kvm_host.h>
+
+#include "interrupt.h"
+
+void kvm_mips_deliver_interrupts(struct kvm_vcpu *vcpu, u32 cause)
+{
+	unsigned long *pending = &vcpu->arch.pending_exceptions;
+	unsigned long *pending_clr = &vcpu->arch.pending_exceptions_clr;
+	unsigned int priority;
+
+	if (!(*pending) && !(*pending_clr))
+		return;
+
+	priority = __ffs(*pending_clr);
+	while (priority <= MIPS_EXC_MAX) {
+		kvm_mips_callbacks->irq_clear(vcpu, priority, cause);
+
+		priority = find_next_bit(pending_clr,
+					 BITS_PER_BYTE * sizeof(*pending_clr),
+					 priority + 1);
+	}
+
+	priority = __ffs(*pending);
+	while (priority <= MIPS_EXC_MAX) {
+		kvm_mips_callbacks->irq_deliver(vcpu, priority, cause);
+
+		priority = find_next_bit(pending,
+					 BITS_PER_BYTE * sizeof(*pending),
+					 priority + 1);
+	}
+
+}
+
+int kvm_mips_pending_timer(struct kvm_vcpu *vcpu)
+{
+	return test_bit(MIPS_EXC_INT_TIMER, &vcpu->arch.pending_exceptions);
+}
-- 
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