| | 1 | /* |
| | 2 | * Virtio MMIO bindings |
| | 3 | * |
| | 4 | * Copyright (c) 2011 Linaro Limited |
| | 5 | * |
| | 6 | * Author: |
| | 7 | * Peter Maydell <[email protected]> |
| | 8 | * |
| | 9 | * This program is free software; you can redistribute it and/or modify |
| | 10 | * it under the terms of the GNU General Public License; either version 2 |
| | 11 | * of the License, or (at your option) any later version. |
| | 12 | * |
| | 13 | * This program is distributed in the hope that it will be useful, |
| | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 16 | * GNU General Public License for more details. |
| | 17 | * |
| | 18 | * You should have received a copy of the GNU General Public License along |
| | 19 | * with this program; if not, see <http://www.gnu.org/licenses/>. |
| | 20 | */ |
| | 21 | |
| | 22 | #ifndef HW_VIRTIO_MMIO_H |
| | 23 | #define HW_VIRTIO_MMIO_H |
| | 24 | |
| | 25 | #include "hw/sysbus.h" |
| | 26 | #include "hw/virtio/virtio-bus.h" |
| | 27 | |
| | 28 | /* QOM macros */ |
| | 29 | /* virtio-mmio-bus */ |
| | 30 | #define TYPE_VIRTIO_MMIO_BUS "virtio-mmio-bus" |
| | 31 | /* This is reusing the VirtioBusState typedef from TYPE_VIRTIO_BUS */ |
| | 32 | DECLARE_OBJ_CHECKERS(VirtioBusState, VirtioBusClass, |
| | 33 | VIRTIO_MMIO_BUS, TYPE_VIRTIO_MMIO_BUS) |
| | 34 | |
| | 35 | /* virtio-mmio */ |
| | 36 | #define TYPE_VIRTIO_MMIO "virtio-mmio" |
| | 37 | OBJECT_DECLARE_SIMPLE_TYPE(VirtIOMMIOProxy, VIRTIO_MMIO) |
| | 38 | |
| | 39 | #define VIRT_MAGIC 0x74726976 /* 'virt' */ |
| | 40 | #define VIRT_VERSION 2 |
| | 41 | #define VIRT_VERSION_LEGACY 1 |
| | 42 | #define VIRT_VENDOR 0x554D4551 /* 'QEMU' */ |
| | 43 | |
| | 44 | typedef struct VirtIOMMIOQueue { |
| | 45 | uint16_t num; |
| | 46 | bool enabled; |
| | 47 | uint32_t desc[2]; |
| | 48 | uint32_t avail[2]; |
| | 49 | uint32_t used[2]; |
| | 50 | } VirtIOMMIOQueue; |
| | 51 | |
| | 52 | #define VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT 1 |
| | 53 | #define VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD \ |
| | 54 | (1 << VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT) |
| | 55 | |
| | 56 | struct VirtIOMMIOProxy { |
| | 57 | /* Generic */ |
| | 58 | SysBusDevice parent_obj; |
| | 59 | MemoryRegion iomem; |
| | 60 | qemu_irq irq; |
| | 61 | bool legacy; |
| | 62 | uint32_t flags; |
| | 63 | /* Guest accessible state needing migration and reset */ |
| | 64 | uint32_t host_features_sel; |
| | 65 | uint32_t guest_features_sel; |
| | 66 | uint32_t guest_page_shift; |
| | 67 | /* virtio-bus */ |
| | 68 | VirtioBusState bus; |
| | 69 | bool format_transport_address; |
| | 70 | /* Fields only used for non-legacy (v2) devices */ |
| | 71 | uint32_t guest_features[2]; |
| | 72 | VirtIOMMIOQueue vqs[VIRTIO_QUEUE_MAX]; |
| | 73 | }; |
| | 74 | |
| | 75 | #endif |
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