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use frame_alloc_more in VirtioHal

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This commit is contained in:
yufeng 2023-02-06 19:15:46 +08:00
parent 31b1ba428a
commit fa2d574c3b
2 changed files with 5 additions and 11 deletions
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14
os/src/drivers/bus/virtio.rs
View File

@ -1,6 +1,6 @@
use crate::mm::{
frame_alloc, frame_dealloc, kernel_token, FrameTracker, PageTable, PhysAddr, PhysPageNum,
StepByOne, VirtAddr,
StepByOne, VirtAddr, frame_alloc_more,
};
use crate::sync::UPIntrFreeCell;
use alloc::vec::Vec;
@ -16,15 +16,9 @@ pub struct VirtioHal;
impl Hal for VirtioHal {
fn dma_alloc(pages: usize) -> usize {
let mut ppn_base = PhysPageNum(0);
for i in 0..pages {
let frame = frame_alloc().unwrap();
if i == 0 {
ppn_base = frame.ppn;
}
assert_eq!(frame.ppn.0, ppn_base.0 + i);
QUEUE_FRAMES.exclusive_access().push(frame);
}
let trakcers = frame_alloc_more(pages);
let ppn_base = trakcers.as_ref().unwrap().last().unwrap().ppn;
QUEUE_FRAMES.exclusive_access().append(&mut trakcers.unwrap());
let pa: PhysAddr = ppn_base.into();
pa.0
}

2
os/src/mm/mod.rs
View File

@ -6,7 +6,7 @@ mod page_table;
use address::VPNRange;
pub use address::{PhysAddr, PhysPageNum, StepByOne, VirtAddr, VirtPageNum};
pub use frame_allocator::{frame_alloc, frame_dealloc, FrameTracker};
pub use frame_allocator::{frame_alloc, frame_alloc_more, frame_dealloc, FrameTracker};
pub use memory_set::remap_test;
pub use memory_set::{kernel_token, MapPermission, MemorySet, KERNEL_SPACE};
use page_table::PTEFlags;