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Add write_vals for VmIo

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This commit is contained in:
Jianfeng Jiang
2024-04-28 08:58:19 +00:00
committed by Tate, Hongliang Tian
parent abb377b695
commit 345ab8f838
2 changed files with 66 additions and 5 deletions
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9
kernel/comps/virtio/src/device/input/device.rs
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@ -6,7 +6,7 @@ use alloc::{
sync::Arc,
vec::Vec,
};
use core::{fmt::Debug, mem};
use core::{fmt::Debug, iter, mem};
use aster_frame::{
io_mem::IoMem,
@ -244,10 +244,9 @@ impl EventTable {
let vm_segment = VmAllocOptions::new(1).alloc_contiguous().unwrap();
let default_event = VirtioInputEvent::default();
for idx in 0..num_events {
let offset = idx * EVENT_SIZE;
vm_segment.write_val(offset, &default_event).unwrap();
}
let iter = iter::repeat(&default_event);
let nr_written = vm_segment.write_vals(0, iter, 0).unwrap();
assert_eq!(nr_written, EVENT_SIZE);
let stream = DmaStream::map(vm_segment, DmaDirection::FromDevice, false).unwrap();
Self { stream, num_events }