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vmm: acpi_tables: Fix PM timer I/O port width

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Ensure that the width of the I/O port is correctly set to 32-bits in the
generic address used for the X_PM_TMR_BLK. Do this by type
parameterising GenericAddress::io_port_address() fuction.

TEST=Boot with clocksource=acpi_pm and observe no errors in the dmesg.

Fixes: #1496

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2020-07-23 16:09:13 +01:00 committed by Sebastien Boeuf
parent 5cad2334dd
commit 9ae44aeada
2 changed files with 8 additions and 8 deletions
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6
acpi_tables/src/sdt.rs
View File

@ -13,12 +13,12 @@ pub struct GenericAddress {
}
impl GenericAddress {
pub fn io_port_address(address: u16) -> Self {
pub fn io_port_address<T>(address: u16) -> Self {
GenericAddress {
address_space_id: 1,
register_bit_width: 8,
register_bit_width: 8 * std::mem::size_of::<T>() as u8,
register_bit_offset: 0,
access_size: 1,
access_size: std::mem::size_of::<T>() as u8,
address: u64::from(address),
}
}

10
vmm/src/acpi.rs
View File

@ -65,14 +65,14 @@ pub fn create_acpi_tables(
let mut facp = SDT::new(*b"FACP", 276, 6, *b"CLOUDH", *b"CHFACP ", 1);
// PM_TMR_BLK I/O port
facp.write(76, 0xb008);
facp.write(76, 0xb008u32);
// HW_REDUCED_ACPI, RESET_REG_SUP, TMR_VAL_EXT
let fadt_flags: u32 = 1 << 20 | 1 << 10 | 1 << 8;
facp.write(112, fadt_flags);
// RESET_REG
facp.write(116, GenericAddress::io_port_address(0x3c0));
facp.write(116, GenericAddress::io_port_address::<u8>(0x3c0));
// RESET_VALUE
facp.write(128, 1u8);
@ -80,12 +80,12 @@ pub fn create_acpi_tables(
facp.write(140, dsdt_offset.0); // X_DSDT
// X_PM_TMR_BLK
facp.write(208, GenericAddress::io_port_address(0xb008));
facp.write(208, GenericAddress::io_port_address::<u32>(0xb008));
// SLEEP_CONTROL_REG
facp.write(244, GenericAddress::io_port_address(0x3c0));
facp.write(244, GenericAddress::io_port_address::<u8>(0x3c0));
// SLEEP_STATUS_REG
facp.write(256, GenericAddress::io_port_address(0x3c0));
facp.write(256, GenericAddress::io_port_address::<u8>(0x3c0));
facp.write(268, b"CLOUDHYP"); // Hypervisor Vendor Identity