morpheus_network::driver

Module block_io_adapter

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Expand description

BlockIo adapter for VirtIO-blk driver.

This module provides a gpt_disk_io::BlockIo implementation that wraps our VirtIO-blk driver. This allows using the FAT32 and ISO9660 filesystem implementations post-ExitBootServices.

§Architecture

┌────────────────────────────────────────┐
│     FAT32 / ISO9660 Filesystem         │
│        (uses BlockIo trait)            │
└───────────────────┬────────────────────┘
                    │ gpt_disk_io::BlockIo
                    ▼
┌────────────────────────────────────────┐
│       VirtioBlkBlockIo (this)          │
│  Synchronous wrapper with DMA buffer   │
└───────────────────┬────────────────────┘
                    │ BlockDriver trait
                    ▼
┌────────────────────────────────────────┐
│        VirtioBlkDriver                 │
│    (async submit/poll interface)       │
└────────────────────────────────────────┘

§Usage

ⓘ
let mut blk_driver = VirtioBlkDriver::new(mmio_base, config)?;
let mut adapter = VirtioBlkBlockIo::new(&mut blk_driver, dma_buffer)?;

// Now use with FAT32
fat32_ops::read_file(&mut adapter, partition_start, "/vmlinuz")?;

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