Refactor project structure

kernel/comps/virtio/src/device/input/mod.rs

@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: MPL-2.0
+
+// Modified from input.rs in virtio-drivers project
+//
+// MIT License
+//
+// Copyright (c) 2022-2023 Ant Group
+// Copyright (c) 2019-2020 rCore Developers
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+pub mod device;
+use aster_frame::io_mem::IoMem;
+use aster_util::safe_ptr::SafePtr;
+use pod::Pod;
+
+use crate::transport::VirtioTransport;
+
+pub static DEVICE_NAME: &str = "Virtio-Input";
+
+/// Select value used for [`VirtIOInput::query_config_select()`].
+#[repr(u8)]
+#[derive(Debug, Clone, Copy)]
+pub enum InputConfigSelect {
+    /// Returns the name of the device, in u.string. subsel is zero.
+    IdName = 0x01,
+    /// Returns the serial number of the device, in u.string. subsel is zero.
+    IdSerial = 0x02,
+    /// Returns ID information of the device, in u.ids. subsel is zero.
+    IdDevids = 0x03,
+    /// Returns input properties of the device, in u.bitmap. subsel is zero.
+    /// Individual bits in the bitmap correspond to INPUT_PROP_* constants used
+    /// by the underlying evdev implementation.
+    PropBits = 0x10,
+    /// subsel specifies the event type using EV_* constants in the underlying
+    /// evdev implementation. If size is non-zero the event type is supported
+    /// and a bitmap of supported event codes is returned in u.bitmap. Individual
+    /// bits in the bitmap correspond to implementation-defined input event codes,
+    /// for example keys or pointing device axes.
+    EvBits = 0x11,
+    /// subsel specifies the absolute axis using ABS_* constants in the underlying
+    /// evdev implementation. Information about the axis will be returned in u.abs.
+    AbsInfo = 0x12,
+}
+
+#[derive(Debug, Clone, Copy, Pod)]
+#[repr(C)]
+pub struct VirtioInputConfig {
+    /// write only
+    select: u8,
+    /// write only
+    subsel: u8,
+    /// read only
+    size: u8,
+    _reversed: [u8; 5],
+    /// read only
+    data: [u8; 128],
+}
+
+impl VirtioInputConfig {
+    pub(self) fn new(transport: &dyn VirtioTransport) -> SafePtr<Self, IoMem> {
+        let memory = transport.device_config_memory();
+        SafePtr::new(memory, 0)
+    }
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Pod)]
+struct AbsInfo {
+    min: u32,
+    max: u32,
+    fuzz: u32,
+    flat: u32,
+    res: u32,
+}
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone, Pod)]
+struct DevIDs {
+    bustype: u16,
+    vendor: u16,
+    product: u16,
+    version: u16,
+}
+
+/// Both queues use the same `virtio_input_event` struct. `type`, `code` and `value`
+/// are filled according to the Linux input layer (evdev) interface.
+#[repr(C)]
+#[derive(Clone, Copy, Debug, Default, Pod)]
+pub struct VirtioInputEvent {
+    /// Event type.
+    pub event_type: u16,
+    /// Event code.
+    pub code: u16,
+    /// Event value.
+    pub value: u32,
+}
+
+const QUEUE_EVENT: u16 = 0;
+const QUEUE_STATUS: u16 = 1;