Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 116 insertions, 0 deletions

diff --git a/include/hw/i386/microvm.h b/include/hw/i386/microvm.h
new file mode 100644
index 000000000..4d9c732d4
--- /dev/null
+++ b/include/hw/i386/microvm.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2018 Intel Corporation
+ * Copyright (c) 2019 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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/>.
+ */
+
+#ifndef HW_I386_MICROVM_H
+#define HW_I386_MICROVM_H
+
+#include "qemu-common.h"
+#include "exec/hwaddr.h"
+#include "qemu/notify.h"
+
+#include "hw/boards.h"
+#include "hw/i386/x86.h"
+#include "hw/acpi/acpi_dev_interface.h"
+#include "hw/pci-host/gpex.h"
+#include "qom/object.h"
+
+/*
+ *  IRQ    |  pc        | microvm (acpi=on)
+ * --------+------------+------------------
+ *   0     |  pit       |
+ *   1     |  kbd       |
+ *   2     |  cascade   |
+ *   3     |  serial 1  |
+ *   4     |  serial 0  | serial
+ *   5     |  -         |
+ *   6     |  floppy    |
+ *   7     |  parallel  |
+ *   8     |  rtc       | rtc (rtc=on)
+ *   9     |  acpi      | acpi (ged)
+ *  10     |  pci lnk   | xhci (usb=on)
+ *  11     |  pci lnk   |
+ *  12     |  ps2       | pcie
+ *  13     |  fpu       | pcie
+ *  14     |  ide 0     | pcie
+ *  15     |  ide 1     | pcie
+ *  16-23  |  pci gsi   | virtio
+ */
+
+/* Platform virtio definitions */
+#define VIRTIO_MMIO_BASE      0xfeb00000
+#define VIRTIO_CMDLINE_MAXLEN 64
+
+#define GED_MMIO_BASE         0xfea00000
+#define GED_MMIO_BASE_MEMHP   (GED_MMIO_BASE + 0x100)
+#define GED_MMIO_BASE_REGS    (GED_MMIO_BASE + 0x200)
+#define GED_MMIO_IRQ          9
+
+#define MICROVM_XHCI_BASE     0xfe900000
+#define MICROVM_XHCI_IRQ      10
+
+#define PCIE_MMIO_BASE        0xc0000000
+#define PCIE_MMIO_SIZE        0x20000000
+#define PCIE_ECAM_BASE        0xe0000000
+#define PCIE_ECAM_SIZE        0x10000000
+
+/* Machine type options */
+#define MICROVM_MACHINE_PIT                 "pit"
+#define MICROVM_MACHINE_PIC                 "pic"
+#define MICROVM_MACHINE_RTC                 "rtc"
+#define MICROVM_MACHINE_PCIE                "pcie"
+#define MICROVM_MACHINE_IOAPIC2             "ioapic2"
+#define MICROVM_MACHINE_ISA_SERIAL          "isa-serial"
+#define MICROVM_MACHINE_OPTION_ROMS         "x-option-roms"
+#define MICROVM_MACHINE_AUTO_KERNEL_CMDLINE "auto-kernel-cmdline"
+
+struct MicrovmMachineClass {
+    X86MachineClass parent;
+    HotplugHandler *(*orig_hotplug_handler)(MachineState *machine,
+                                           DeviceState *dev);
+};
+
+struct MicrovmMachineState {
+    X86MachineState parent;
+
+    /* Machine type options */
+    OnOffAuto pic;
+    OnOffAuto pit;
+    OnOffAuto rtc;
+    OnOffAuto pcie;
+    OnOffAuto ioapic2;
+    bool isa_serial;
+    bool option_roms;
+    bool auto_kernel_cmdline;
+
+    /* Machine state */
+    uint32_t pcie_irq_base;
+    uint32_t virtio_irq_base;
+    uint32_t virtio_num_transports;
+    bool kernel_cmdline_fixed;
+    Notifier machine_done;
+    Notifier powerdown_req;
+    struct GPEXConfig gpex;
+
+    /* device tree */
+    void *fdt;
+    uint32_t ioapic_phandle[2];
+};
+
+#define TYPE_MICROVM_MACHINE   MACHINE_TYPE_NAME("microvm")
+OBJECT_DECLARE_TYPE(MicrovmMachineState, MicrovmMachineClass, MICROVM_MACHINE)
+
+#endif