1 files changed, 96 insertions, 0 deletions
diff --git a/usr.sbin/bhyve/amd64/kernemu_dev.c b/usr.sbin/bhyve/amd64/kernemu_dev.c
new file mode 100644
index 000000000000..d1577a7b3e99
--- /dev/null
+++ b/usr.sbin/bhyve/amd64/kernemu_dev.c
@@ -0,0 +1,96 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright 2020 Conrad Meyer <cem@FreeBSD.org>.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/errno.h>
+#include <sys/tree.h>
+
+#include <machine/vmm.h>
+#include <x86/include/apicreg.h>
+struct vm;
+struct vm_hpet_cap;
+#include <vmm/io/vioapic.h>
+#include <vmm/io/vhpet.h>
+
+#include <err.h>
+#include <errno.h>
+#include <vmmapi.h>
+
+#include "kernemu_dev.h"
+#include "mem.h"
+
+static int
+apic_handler(struct vcpu *vcpu, int dir, uint64_t addr, int size,
+    uint64_t *val, void *arg1 __unused, long arg2 __unused)
+{
+	if (vm_readwrite_kernemu_device(vcpu, addr, (dir == MEM_F_WRITE),
+	    size, val) != 0)
+		return (errno);
+	return (0);
+}
+
+static struct mem_range lapic_mmio = {
+	.name = "kern-lapic-mmio",
+	.base = DEFAULT_APIC_BASE,
+	.size = PAGE_SIZE,
+	.flags = MEM_F_RW | MEM_F_IMMUTABLE,
+	.handler = apic_handler,
+
+};
+static struct mem_range ioapic_mmio = {
+	.name = "kern-ioapic-mmio",
+	.base = VIOAPIC_BASE,
+	.size = VIOAPIC_SIZE,
+	.flags = MEM_F_RW | MEM_F_IMMUTABLE,
+	.handler = apic_handler,
+};
+static struct mem_range hpet_mmio = {
+	.name = "kern-hpet-mmio",
+	.base = VHPET_BASE,
+	.size = VHPET_SIZE,
+	.flags = MEM_F_RW | MEM_F_IMMUTABLE,
+	.handler = apic_handler,
+};
+
+void
+kernemu_dev_init(void)
+{
+	int rc;
+
+	rc = register_mem(&lapic_mmio);
+	if (rc != 0)
+		errc(4, rc, "register_mem: LAPIC (0x%08x)",
+		    (unsigned)lapic_mmio.base);
+	rc = register_mem(&ioapic_mmio);
+	if (rc != 0)
+		errc(4, rc, "register_mem: IOAPIC (0x%08x)",
+		    (unsigned)ioapic_mmio.base);
+	rc = register_mem(&hpet_mmio);
+	if (rc != 0)
+		errc(4, rc, "register_mem: HPET (0x%08x)",
+		    (unsigned)hpet_mmio.base);
+}