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arch: Move APIC and IOAPIC addresses into layout

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Move the addresses used for the APIC and IOAPIC into our new memory
layout module.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2019-09-27 14:32:00 +01:00
committed by Sebastien Boeuf
parent 0e7a1fc923
commit 6d6e290000
3 changed files with 12 additions and 7 deletions
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arch/src/x86_64/mptable.rs
+4 -5
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@@ -13,7 +13,8 @@ use std::slice;
use libc::c_char;
use arch_gen::x86::mpspec;
use vm_memory::{Address, ByteValued, Bytes, GuestAddress, GuestMemory, GuestMemoryMmap};
use layout::{APIC_START, IOAPIC_START};
use vm_memory::{Address, GuestAddress, ByteValued, Bytes, GuestMemory, GuestMemoryMmap};
// This is a workaround to the Rust enforcement specifying that any implementation of a foreign
// trait (in this case `ByteValued`) where:
@@ -92,8 +93,6 @@ const MPC_SPEC: i8 = 4;
const MPC_OEM: [c_char; 8] = char_array!(c_char; 'F', 'C', ' ', ' ', ' ', ' ', ' ', ' ');
const MPC_PRODUCT_ID: [c_char; 12] = ['0' as c_char; 12];
const BUS_TYPE_ISA: [u8; 6] = char_array!(u8; 'I', 'S', 'A', ' ', ' ', ' ');
pub const IO_APIC_DEFAULT_PHYS_BASE: u32 = 0xfec00000; // source: linux/arch/x86/include/asm/apicdef.h
pub const APIC_DEFAULT_PHYS_BASE: u32 = 0xfee00000; // source: linux/arch/x86/include/asm/apicdef.h
const APIC_VERSION: u8 = 0x14;
const CPU_STEPPING: u32 = 0x600;
const CPU_FEATURE_APIC: u32 = 0x200;
@@ -208,7 +207,7 @@ pub fn setup_mptable(mem: &GuestMemoryMmap, num_cpus: u8) -> Result<()> {
mpc_ioapic.0.apicid = ioapicid;
mpc_ioapic.0.apicver = APIC_VERSION;
mpc_ioapic.0.flags = mpspec::MPC_APIC_USABLE as u8;
mpc_ioapic.0.apicaddr = IO_APIC_DEFAULT_PHYS_BASE;
mpc_ioapic.0.apicaddr = IOAPIC_START.0 as u32;
mem.write_obj(mpc_ioapic, base_mp)
.map_err(|_| Error::WriteMpcIoapic)?;
base_mp = base_mp.unchecked_add(size as u64);
@@ -271,7 +270,7 @@ pub fn setup_mptable(mem: &GuestMemoryMmap, num_cpus: u8) -> Result<()> {
mpc_table.0.spec = MPC_SPEC;
mpc_table.0.oem = MPC_OEM;
mpc_table.0.productid = MPC_PRODUCT_ID;
mpc_table.0.lapic = APIC_DEFAULT_PHYS_BASE;
mpc_table.0.lapic = APIC_START.0 as u32;
checksum = checksum.wrapping_add(compute_checksum(&mpc_table.0));
mpc_table.0.checksum = (!checksum).wrapping_add(1) as i8;
mem.write_obj(mpc_table, table_base)