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vmm: Refactor MCFG table creation to take just the PCI segments

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This matches the lock taking behaviour of other functions in this file.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2021-10-29 10:44:51 +01:00
parent afe95e5a2a
commit 9d1a7e43a7
1 changed files with 4 additions and 3 deletions
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7
vmm/src/acpi.rs
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@ -5,6 +5,7 @@
use crate::cpu::CpuManager;
use crate::device_manager::DeviceManager;
use crate::memory_manager::MemoryManager;
use crate::pci_segment::PciSegment;
use crate::{GuestMemoryMmap, GuestRegionMmap};
use acpi_tables::sdt::GenericAddress;
use acpi_tables::{aml::Aml, rsdp::Rsdp, sdt::Sdt};
@ -223,13 +224,13 @@ fn create_facp_table(dsdt_offset: GuestAddress) -> Sdt {
facp
}
fn create_mcfg_table(device_manager: &Arc<Mutex<DeviceManager>>) -> Sdt {
fn create_mcfg_table(pci_segments: &[PciSegment]) -> Sdt {
let mut mcfg = Sdt::new(*b"MCFG", 36, 1, *b"CLOUDH", *b"CHMCFG ", 1);
// MCFG reserved 8 bytes
mcfg.append(0u64);
for segment in device_manager.lock().unwrap().pci_segments() {
for segment in pci_segments {
// 32-bit PCI enhanced configuration mechanism
mcfg.append(PciRangeEntry {
base_address: segment.mmio_config_address,
@ -539,7 +540,7 @@ pub fn create_acpi_tables(
}
// MCFG
let mcfg = create_mcfg_table(device_manager);
let mcfg = create_mcfg_table(device_manager.lock().unwrap().pci_segments());
let mcfg_offset = prev_tbl_off.checked_add(prev_tbl_len).unwrap();
guest_mem
.write_slice(mcfg.as_slice(), mcfg_offset)