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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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acpi_tables: aml: Add support for address spaces
Add support for Word/DWord/QWord address spaces for I/O, memory and buses. Using sensible defaults for infrequently set flags. Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
parent
c4c3540a1d
commit
08aff4ed5a
@ -333,6 +333,129 @@ impl Aml for Memory32Fixed {
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}
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}
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#[derive(Copy, Clone)]
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enum AddressSpaceType {
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Memory,
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IO,
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BusNumber,
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}
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#[derive(Copy, Clone)]
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pub enum AddressSpaceCachable {
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NotCacheable,
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Cacheable,
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WriteCombining,
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PreFetchable,
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}
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pub struct AddressSpace<T> {
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r#type: AddressSpaceType,
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min: T,
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max: T,
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type_flags: u8,
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}
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impl<T> AddressSpace<T> {
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pub fn new_memory(cacheable: AddressSpaceCachable, read_write: bool, min: T, max: T) -> Self {
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AddressSpace {
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r#type: AddressSpaceType::Memory,
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min,
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max,
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type_flags: (cacheable as u8) << 1 | read_write as u8,
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}
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}
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pub fn new_io(min: T, max: T) -> Self {
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AddressSpace {
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r#type: AddressSpaceType::IO,
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min,
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max,
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type_flags: 3, /* EntireRange */
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}
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}
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pub fn new_bus_number(min: T, max: T) -> Self {
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AddressSpace {
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r#type: AddressSpaceType::BusNumber,
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min,
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max,
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type_flags: 0,
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}
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}
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fn push_header(&self, bytes: &mut Vec<u8>, descriptor: u8, length: usize) {
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bytes.push(descriptor); /* Word Address Space Descriptor */
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bytes.append(&mut (length as u16).to_le_bytes().to_vec());
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bytes.push(self.r#type as u8); /* type */
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let generic_flags = 1 << 2 /* Min Fixed */ | 1 << 3; /* Max Fixed */
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bytes.push(generic_flags);
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bytes.push(self.type_flags);
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}
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}
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impl Aml for AddressSpace<u16> {
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fn to_bytes(&self) -> Vec<u8> {
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let mut bytes = Vec::new();
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self.push_header(
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&mut bytes,
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0x88, /* Word Address Space Descriptor */
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3 + 5 * std::mem::size_of::<u16>(), /* 3 bytes of header + 5 u16 fields */
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);
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bytes.append(&mut 0u16.to_le_bytes().to_vec()); /* Granularity */
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bytes.append(&mut self.min.to_le_bytes().to_vec()); /* Min */
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bytes.append(&mut self.max.to_le_bytes().to_vec()); /* Max */
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bytes.append(&mut 0u16.to_le_bytes().to_vec()); /* Translation */
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let len = self.max - self.min + 1;
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bytes.append(&mut len.to_le_bytes().to_vec()); /* Length */
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bytes
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}
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}
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impl Aml for AddressSpace<u32> {
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fn to_bytes(&self) -> Vec<u8> {
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let mut bytes = Vec::new();
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self.push_header(
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&mut bytes,
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0x87, /* DWord Address Space Descriptor */
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3 + 5 * std::mem::size_of::<u32>(), /* 3 bytes of header + 5 u32 fields */
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);
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bytes.append(&mut 0u32.to_le_bytes().to_vec()); /* Granularity */
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bytes.append(&mut self.min.to_le_bytes().to_vec()); /* Min */
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bytes.append(&mut self.max.to_le_bytes().to_vec()); /* Max */
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bytes.append(&mut 0u32.to_le_bytes().to_vec()); /* Translation */
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let len = self.max - self.min + 1;
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bytes.append(&mut len.to_le_bytes().to_vec()); /* Length */
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bytes
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}
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}
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impl Aml for AddressSpace<u64> {
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fn to_bytes(&self) -> Vec<u8> {
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let mut bytes = Vec::new();
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self.push_header(
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&mut bytes,
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0x8A, /* QWord Address Space Descriptor */
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3 + 5 * std::mem::size_of::<u64>(), /* 3 bytes of header + 5 u64 fields */
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);
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bytes.append(&mut 0u64.to_le_bytes().to_vec()); /* Granularity */
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bytes.append(&mut self.min.to_le_bytes().to_vec()); /* Min */
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bytes.append(&mut self.max.to_le_bytes().to_vec()); /* Max */
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bytes.append(&mut 0u64.to_le_bytes().to_vec()); /* Translation */
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let len = self.max - self.min + 1;
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bytes.append(&mut len.to_le_bytes().to_vec()); /* Length */
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bytes
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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@ -361,6 +484,143 @@ mod tests {
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.to_bytes(),
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crs_memory_32_fixed
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);
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/*
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Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings
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{
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WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode,
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0x0000, // Granularity
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0x0000, // Range Minimum
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0x00FF, // Range Maximum
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0x0000, // Translation Offset
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0x0100, // Length
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,, )
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WordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
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0x0000, // Granularity
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0x0000, // Range Minimum
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0x0CF7, // Range Maximum
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0x0000, // Translation Offset
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0x0CF8, // Length
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,, , TypeStatic, DenseTranslation)
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WordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
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0x0000, // Granularity
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0x0D00, // Range Minimum
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0xFFFF, // Range Maximum
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0x0000, // Translation Offset
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0xF300, // Length
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,, , TypeStatic, DenseTranslation)
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DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite,
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0x00000000, // Granularity
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0x000A0000, // Range Minimum
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0x000BFFFF, // Range Maximum
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0x00000000, // Translation Offset
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0x00020000, // Length
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,, , AddressRangeMemory, TypeStatic)
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DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite,
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0x00000000, // Granularity
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0xC0000000, // Range Minimum
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0xFEBFFFFF, // Range Maximum
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0x00000000, // Translation Offset
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0x3EC00000, // Length
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,, , AddressRangeMemory, TypeStatic)
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QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite,
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0x0000000000000000, // Granularity
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0x0000000800000000, // Range Minimum
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0x0000000FFFFFFFFF, // Range Maximum
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0x0000000000000000, // Translation Offset
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0x0000000800000000, // Length
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,, , AddressRangeMemory, TypeStatic)
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})
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*/
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// WordBusNumber from above
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let crs_word_bus_number = [
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0x08, 0x5F, 0x43, 0x52, 0x53, 0x11, 0x15, 0x0A, 0x12, 0x88, 0x0D, 0x00, 0x02, 0x0C,
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0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x01, 0x79, 0x00,
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];
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assert_eq!(
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Name::new(
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"_CRS".into(),
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&ResourceTemplate::new(vec![&AddressSpace::new_bus_number(0x0u16, 0xffu16),])
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)
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.to_bytes(),
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&crs_word_bus_number
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);
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// WordIO blocks (x 2) from above
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let crs_word_io = [
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0x08, 0x5F, 0x43, 0x52, 0x53, 0x11, 0x25, 0x0A, 0x22, 0x88, 0x0D, 0x00, 0x01, 0x0C,
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0x03, 0x00, 0x00, 0x00, 0x00, 0xF7, 0x0C, 0x00, 0x00, 0xF8, 0x0C, 0x88, 0x0D, 0x00,
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0x01, 0x0C, 0x03, 0x00, 0x00, 0x00, 0x0D, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0xF3, 0x79,
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0x00,
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];
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assert_eq!(
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Name::new(
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"_CRS".into(),
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&ResourceTemplate::new(vec![
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&AddressSpace::new_io(0x0u16, 0xcf7u16),
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&AddressSpace::new_io(0xd00u16, 0xffffu16),
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])
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)
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.to_bytes(),
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&crs_word_io[..]
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);
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// DWordMemory blocks (x 2) from above
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let crs_dword_memory = [
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0x08, 0x5F, 0x43, 0x52, 0x53, 0x11, 0x39, 0x0A, 0x36, 0x87, 0x17, 0x00, 0x00, 0x0C,
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0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x00, 0xFF, 0xFF, 0x0B, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x87, 0x17, 0x00, 0x00, 0x0C, 0x01, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xFF, 0xFF, 0xBF, 0xFE, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0xC0, 0x3E, 0x79, 0x00,
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];
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assert_eq!(
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Name::new(
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"_CRS".into(),
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&ResourceTemplate::new(vec![
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&AddressSpace::new_memory(
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AddressSpaceCachable::Cacheable,
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true,
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0xa_0000u32,
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0xb_ffffu32
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),
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&AddressSpace::new_memory(
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AddressSpaceCachable::NotCacheable,
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true,
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0xc000_0000u32,
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0xfebf_ffffu32
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),
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])
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)
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.to_bytes(),
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&crs_dword_memory[..]
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);
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// QWordMemory from above
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let crs_qword_memory = [
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0x08, 0x5F, 0x43, 0x52, 0x53, 0x11, 0x33, 0x0A, 0x30, 0x8A, 0x2B, 0x00, 0x00, 0x0C,
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0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08,
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0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x79,
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0x00,
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];
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assert_eq!(
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Name::new(
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"_CRS".into(),
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&ResourceTemplate::new(vec![&AddressSpace::new_memory(
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AddressSpaceCachable::Cacheable,
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true,
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0x8_0000_0000u64,
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0xf_ffff_ffffu64
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)])
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)
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.to_bytes(),
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&crs_qword_memory[..]
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);
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}
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#[test]
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