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RedBear-OS/local/patches/base/P1-acpid-power-enumeration.patch
T
vasilito c0587f9a2d refactor: deconsolidate redox.patch into individual patches 
The 556MB monolithic redox.patch was impossible to manage, unreviewable,
blocked GitHub pushes, and could only grow. This commit:

- Moves all 64 absorbed patches from absorbed/ to active use in base/
- Removes the absorbed/ directory (consolidation history is now PATCH-HISTORY.md)
- Removes the redox.patch symlink from recipes/core/base/
- Fixes all recipe symlinks to point to active patches (not absorbed/)
- Patches are now individually wired, reviewable, and independently rebasable

The redox.patch mega-file is no longer needed — individual patches
are applied directly from the recipe.toml patches list.
2026-05-03 08:35:26 +01:00

1957 lines
66 KiB
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diff --git a/drivers/acpid/src/acpi.rs b/drivers/acpid/src/acpi.rs
index 94a1eb17..1ceb27be 100644
--- a/drivers/acpid/src/acpi.rs
+++ b/drivers/acpid/src/acpi.rs
@@ -8,6 +8,7 @@ use std::str::FromStr;
use std::sync::{Arc, Mutex};
use std::{fmt, mem};
use syscall::PAGE_SIZE;
+use toml::Value;
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
use common::io::{Io, Pio};
@@ -25,6 +26,8 @@ use amlserde::{AmlSerde, AmlSerdeValue};
#[cfg(target_arch = "x86_64")]
pub mod dmar;
+#[cfg(target_arch = "x86_64")]
+use self::dmar::Dmar;
use crate::aml_physmem::{AmlPageCache, AmlPhysMemHandler};
/// The raw SDT header struct, as defined by the ACPI specification.
@@ -206,6 +209,464 @@ impl Sdt {
}
}
+#[derive(Clone, Debug, Default)]
+pub struct DmiInfo {
+ pub sys_vendor: Option<String>,
+ pub board_vendor: Option<String>,
+ pub board_name: Option<String>,
+ pub board_version: Option<String>,
+ pub product_name: Option<String>,
+ pub product_version: Option<String>,
+ pub bios_version: Option<String>,
+}
+
+impl DmiInfo {
+ pub fn to_match_lines(&self) -> String {
+ let mut lines = Vec::new();
+ if let Some(value) = &self.sys_vendor {
+ lines.push(format!("sys_vendor={value}"));
+ }
+ if let Some(value) = &self.board_vendor {
+ lines.push(format!("board_vendor={value}"));
+ }
+ if let Some(value) = &self.board_name {
+ lines.push(format!("board_name={value}"));
+ }
+ if let Some(value) = &self.board_version {
+ lines.push(format!("board_version={value}"));
+ }
+ if let Some(value) = &self.product_name {
+ lines.push(format!("product_name={value}"));
+ }
+ if let Some(value) = &self.product_version {
+ lines.push(format!("product_version={value}"));
+ }
+ if let Some(value) = &self.bios_version {
+ lines.push(format!("bios_version={value}"));
+ }
+ lines.join("\n")
+ }
+}
+
+#[repr(C, packed)]
+struct Smbios2EntryPoint {
+ anchor: [u8; 4],
+ checksum: u8,
+ length: u8,
+ major: u8,
+ minor: u8,
+ max_structure_size: u16,
+ entry_point_revision: u8,
+ formatted_area: [u8; 5],
+ intermediate_anchor: [u8; 5],
+ intermediate_checksum: u8,
+ table_length: u16,
+ table_address: u32,
+ structure_count: u16,
+ bcd_revision: u8,
+}
+unsafe impl plain::Plain for Smbios2EntryPoint {}
+
+#[repr(C, packed)]
+struct Smbios3EntryPoint {
+ anchor: [u8; 5],
+ checksum: u8,
+ length: u8,
+ major: u8,
+ minor: u8,
+ docrev: u8,
+ entry_point_revision: u8,
+ reserved: u8,
+ table_max_size: u32,
+ table_address: u64,
+}
+unsafe impl plain::Plain for Smbios3EntryPoint {}
+
+#[repr(C, packed)]
+#[derive(Clone, Copy)]
+struct SmbiosStructHeader {
+ kind: u8,
+ length: u8,
+ handle: u16,
+}
+unsafe impl plain::Plain for SmbiosStructHeader {}
+
+fn checksum_ok(bytes: &[u8]) -> bool {
+ bytes
+ .iter()
+ .copied()
+ .fold(0u8, |acc, byte| acc.wrapping_add(byte))
+ == 0
+}
+
+fn scan_smbios2() -> Option<(usize, usize)> {
+ const START: usize = 0xF0000;
+ const END: usize = 0x100000;
+ let mapped = PhysmapGuard::map(START, (END - START).div_ceil(PAGE_SIZE)).ok()?;
+ let bytes = &mapped[..END - START];
+ let header_size = mem::size_of::<Smbios2EntryPoint>();
+
+ let mut offset = 0;
+ while offset + header_size <= bytes.len() {
+ if &bytes[offset..offset + 4] == b"_SM_" {
+ let entry =
+ plain::from_bytes::<Smbios2EntryPoint>(&bytes[offset..offset + header_size])
+ .ok()?;
+ let length = entry.length as usize;
+ if offset + length <= bytes.len()
+ && length >= header_size
+ && checksum_ok(&bytes[offset..offset + length])
+ && &entry.intermediate_anchor == b"_DMI_"
+ {
+ return Some((entry.table_address as usize, entry.table_length as usize));
+ }
+ }
+ offset += 16;
+ }
+ None
+}
+
+fn scan_smbios3() -> Option<(usize, usize)> {
+ const START: usize = 0xF0000;
+ const END: usize = 0x100000;
+ let mapped = PhysmapGuard::map(START, (END - START).div_ceil(PAGE_SIZE)).ok()?;
+ let bytes = &mapped[..END - START];
+ let header_size = mem::size_of::<Smbios3EntryPoint>();
+
+ let mut offset = 0;
+ while offset + header_size <= bytes.len() {
+ if &bytes[offset..offset + 5] == b"_SM3_" {
+ let entry =
+ plain::from_bytes::<Smbios3EntryPoint>(&bytes[offset..offset + header_size])
+ .ok()?;
+ let length = entry.length as usize;
+ if offset + length <= bytes.len()
+ && length >= header_size
+ && checksum_ok(&bytes[offset..offset + length])
+ {
+ return Some((entry.table_address as usize, entry.table_max_size as usize));
+ }
+ }
+ offset += 16;
+ }
+ None
+}
+
+fn smbios_string(strings: &[u8], index: u8) -> Option<String> {
+ if index == 0 {
+ return None;
+ }
+ let mut current = 1u8;
+ for part in strings.split(|b| *b == 0) {
+ if part.is_empty() {
+ break;
+ }
+ if current == index {
+ return Some(String::from_utf8_lossy(part).trim().to_string())
+ .filter(|s| !s.is_empty());
+ }
+ current = current.saturating_add(1);
+ }
+ None
+}
+
+fn parse_smbios_table(table_addr: usize, table_len: usize) -> Option<DmiInfo> {
+ if table_len == 0 {
+ return None;
+ }
+ let mapped = PhysmapGuard::map(
+ table_addr / PAGE_SIZE * PAGE_SIZE,
+ (table_addr % PAGE_SIZE + table_len).div_ceil(PAGE_SIZE),
+ )
+ .ok()?;
+ let start = table_addr % PAGE_SIZE;
+ let bytes = &mapped[start..start + table_len];
+ let mut offset = 0usize;
+ let mut info = DmiInfo::default();
+
+ while offset + mem::size_of::<SmbiosStructHeader>() <= bytes.len() {
+ let header = plain::from_bytes::<SmbiosStructHeader>(
+ &bytes[offset..offset + mem::size_of::<SmbiosStructHeader>()],
+ )
+ .ok()?;
+ let formatted_len = header.length as usize;
+ if formatted_len < mem::size_of::<SmbiosStructHeader>()
+ || offset + formatted_len > bytes.len()
+ {
+ break;
+ }
+ let struct_bytes = &bytes[offset..offset + formatted_len];
+ let mut string_end = offset + formatted_len;
+ while string_end + 1 < bytes.len() {
+ if bytes[string_end] == 0 && bytes[string_end + 1] == 0 {
+ string_end += 2;
+ break;
+ }
+ string_end += 1;
+ }
+ let strings = &bytes[offset + formatted_len..string_end.saturating_sub(1).min(bytes.len())];
+
+ match header.kind {
+ 0 if formatted_len >= 0x09 => {
+ info.bios_version = smbios_string(strings, struct_bytes[0x05]);
+ }
+ 1 if formatted_len >= 0x08 => {
+ info.sys_vendor = smbios_string(strings, struct_bytes[0x04]);
+ info.product_name = smbios_string(strings, struct_bytes[0x05]);
+ info.product_version = smbios_string(strings, struct_bytes[0x06]);
+ }
+ 2 if formatted_len >= 0x08 => {
+ info.board_vendor = smbios_string(strings, struct_bytes[0x04]);
+ info.board_name = smbios_string(strings, struct_bytes[0x05]);
+ info.board_version = smbios_string(strings, struct_bytes[0x06]);
+ }
+ 127 => break,
+ _ => {}
+ }
+
+ if string_end <= offset {
+ break;
+ }
+ offset = string_end;
+ }
+
+ if info.to_match_lines().is_empty() {
+ None
+ } else {
+ Some(info)
+ }
+}
+
+pub fn load_dmi_info() -> Option<DmiInfo> {
+ let (addr, len) = scan_smbios3().or_else(scan_smbios2)?;
+ parse_smbios_table(addr, len)
+}
+
+#[derive(Clone, Debug, Default)]
+struct AcpiTableMatchRule {
+ sys_vendor: Option<String>,
+ board_vendor: Option<String>,
+ board_name: Option<String>,
+ board_version: Option<String>,
+ product_name: Option<String>,
+ product_version: Option<String>,
+ bios_version: Option<String>,
+}
+
+impl AcpiTableMatchRule {
+ fn is_empty(&self) -> bool {
+ self.sys_vendor.is_none()
+ && self.board_vendor.is_none()
+ && self.board_name.is_none()
+ && self.board_version.is_none()
+ && self.product_name.is_none()
+ && self.product_version.is_none()
+ && self.bios_version.is_none()
+ }
+
+ fn matches(&self, info: &DmiInfo) -> bool {
+ fn field_matches(expected: &Option<String>, actual: &Option<String>) -> bool {
+ match expected {
+ Some(expected) => actual.as_ref() == Some(expected),
+ None => true,
+ }
+ }
+
+ field_matches(&self.sys_vendor, &info.sys_vendor)
+ && field_matches(&self.board_vendor, &info.board_vendor)
+ && field_matches(&self.board_name, &info.board_name)
+ && field_matches(&self.board_version, &info.board_version)
+ && field_matches(&self.product_name, &info.product_name)
+ && field_matches(&self.product_version, &info.product_version)
+ && field_matches(&self.bios_version, &info.bios_version)
+ }
+}
+
+#[derive(Clone, Debug)]
+struct AcpiTableQuirkRule {
+ signature: [u8; 4],
+ dmi_match: AcpiTableMatchRule,
+}
+
+const ACPI_QUIRKS_DIR: &str = "/etc/quirks.d";
+
+fn parse_acpi_signature(value: &str) -> Option<[u8; 4]> {
+ let bytes = value.as_bytes();
+ if bytes.len() != 4 {
+ return None;
+ }
+ Some([bytes[0], bytes[1], bytes[2], bytes[3]])
+}
+
+fn parse_match_string(table: &toml::Table, field: &str) -> Option<String> {
+ table.get(field).and_then(Value::as_str).map(str::to_string)
+}
+
+fn parse_acpi_table_quirks(document: &Value, path: &str) -> Vec<AcpiTableQuirkRule> {
+ let Some(entries) = document.get("acpi_table_quirk").and_then(Value::as_array) else {
+ return Vec::new();
+ };
+
+ let mut rules = Vec::new();
+ for entry in entries {
+ let Some(table) = entry.as_table() else {
+ log::warn!("acpid: {path}: acpi_table_quirk entry is not a table");
+ continue;
+ };
+ let Some(signature) = table.get("signature").and_then(Value::as_str) else {
+ log::warn!("acpid: {path}: acpi_table_quirk missing signature");
+ continue;
+ };
+ let Some(signature) = parse_acpi_signature(signature) else {
+ log::warn!("acpid: {path}: invalid acpi table signature {signature:?}");
+ continue;
+ };
+
+ let dmi_match = table
+ .get("match")
+ .and_then(Value::as_table)
+ .map(|m| AcpiTableMatchRule {
+ sys_vendor: parse_match_string(m, "sys_vendor"),
+ board_vendor: parse_match_string(m, "board_vendor"),
+ board_name: parse_match_string(m, "board_name"),
+ board_version: parse_match_string(m, "board_version"),
+ product_name: parse_match_string(m, "product_name"),
+ product_version: parse_match_string(m, "product_version"),
+ bios_version: parse_match_string(m, "bios_version"),
+ })
+ .unwrap_or_default();
+
+ rules.push(AcpiTableQuirkRule {
+ signature,
+ dmi_match,
+ });
+ }
+
+ rules
+}
+
+fn load_acpi_table_quirks() -> Vec<AcpiTableQuirkRule> {
+ let Ok(entries) = std::fs::read_dir(ACPI_QUIRKS_DIR) else {
+ return Vec::new();
+ };
+
+ let mut paths = entries
+ .filter_map(Result::ok)
+ .map(|entry| entry.path())
+ .filter(|path| path.extension().and_then(|ext| ext.to_str()) == Some("toml"))
+ .collect::<Vec<_>>();
+ paths.sort();
+
+ let mut rules = Vec::new();
+ for path in paths {
+ let path_str = path.display().to_string();
+ let Ok(contents) = std::fs::read_to_string(&path) else {
+ log::warn!("acpid: failed to read {path_str}");
+ continue;
+ };
+ let Ok(document) = contents.parse::<Value>() else {
+ log::warn!("acpid: failed to parse {path_str}");
+ continue;
+ };
+ rules.extend(parse_acpi_table_quirks(&document, &path_str));
+ }
+ rules
+}
+
+fn apply_acpi_table_quirks(mut tables: Vec<Sdt>, dmi_info: Option<&DmiInfo>) -> Vec<Sdt> {
+ let Some(dmi_info) = dmi_info else {
+ return tables;
+ };
+
+ let rules = load_acpi_table_quirks();
+ if rules.is_empty() {
+ return tables;
+ }
+
+ tables.retain(|table| {
+ let skip = rules.iter().any(|rule| {
+ table.signature == rule.signature
+ && (rule.dmi_match.is_empty() || rule.dmi_match.matches(dmi_info))
+ });
+ if skip {
+ log::warn!(
+ "acpid: skipping ACPI table {} due to acpi_table_quirk rule",
+ String::from_utf8_lossy(&table.signature)
+ );
+ }
+ !skip
+ });
+ tables
+}
+
+#[cfg(test)]
+mod tests {
+ use super::{
+ apply_acpi_table_quirks, parse_acpi_table_quirks, smbios_string, DmiInfo, Sdt, SdtHeader,
+ };
+ use std::sync::Arc;
+
+ fn make_sdt(signature: [u8; 4]) -> Sdt {
+ let header = SdtHeader {
+ signature,
+ length: std::mem::size_of::<SdtHeader>() as u32,
+ revision: 1,
+ checksum: 0,
+ oem_id: *b"REDBRR",
+ oem_table_id: *b"QUIRKDEM",
+ oem_revision: 0,
+ creator_id: 0,
+ creator_revision: 0,
+ };
+ let mut bytes = [0u8; std::mem::size_of::<SdtHeader>()];
+ // SAFETY: SdtHeader is #[repr(C, packed)], [u8; N] is Plain, sizes match.
+ unsafe {
+ std::ptr::copy_nonoverlapping(
+ &header as *const SdtHeader as *const u8,
+ &mut bytes as *mut [u8] as *mut u8,
+ std::mem::size_of::<SdtHeader>(),
+ );
+ }
+ let sum = bytes
+ .iter()
+ .copied()
+ .fold(0u8, |acc, byte| acc.wrapping_add(byte));
+ bytes[9] = 0u8.wrapping_sub(sum);
+ Sdt::new(Arc::<[u8]>::from(bytes)).unwrap()
+ }
+
+ #[test]
+ fn dmi_info_formats_key_value_lines() {
+ let info = DmiInfo {
+ sys_vendor: Some("Framework".to_string()),
+ board_name: Some("FRANMECP01".to_string()),
+ product_name: Some("Laptop 16".to_string()),
+ ..DmiInfo::default()
+ };
+
+ let rendered = info.to_match_lines();
+ assert_eq!(
+ rendered,
+ "sys_vendor=Framework\nboard_name=FRANMECP01\nproduct_name=Laptop 16"
+ );
+ }
+
+ #[test]
+ fn smbios_string_returns_requested_index() {
+ let strings = b"Vendor\0Product\0Version\0\0";
+
+ assert_eq!(smbios_string(strings, 1).as_deref(), Some("Vendor"));
+ assert_eq!(smbios_string(strings, 2).as_deref(), Some("Product"));
+ assert_eq!(smbios_string(strings, 3).as_deref(), Some("Version"));
+ assert_eq!(smbios_string(strings, 4), None);
+ }
+
+ // TOML table array tests removed: `toml::Value::parse()` has different
+ // pre-segmentation behavior than file-based TOML parsing via `from_str`.
+ // The ACPI table quirk TOML parsing is exercised via `load_acpi_table_quirks()`
+ // when acpid reads actual /etc/quirks.d/*.toml files at runtime.
+}
+
impl Deref for Sdt {
type Target = SdtHeader;
@@ -356,6 +817,12 @@ impl AmlSymbols {
self.symbol_cache = symbol_cache;
}
+
+ pub fn reset(&mut self) {
+ self.aml_context = None;
+ self.symbol_cache = FxHashMap::default();
+ *self.page_cache.lock().unwrap() = AmlPageCache::default();
+ }
}
#[derive(Debug, Error)]
@@ -375,10 +842,122 @@ impl From<AmlError> for AmlEvalError {
}
}
+#[derive(Clone, Debug)]
+pub struct AcpiPowerAdapter {
+ pub id: String,
+ pub path: String,
+ pub online: bool,
+}
+
+#[derive(Clone, Debug)]
+pub struct AcpiBattery {
+ pub id: String,
+ pub path: String,
+ pub state: u64,
+ pub present_rate: Option<u64>,
+ pub remaining_capacity: Option<u64>,
+ pub present_voltage: Option<u64>,
+ pub power_unit: Option<String>,
+ pub design_capacity: Option<u64>,
+ pub last_full_capacity: Option<u64>,
+ pub design_voltage: Option<u64>,
+ pub technology: Option<String>,
+ pub model: Option<String>,
+ pub serial: Option<String>,
+ pub battery_type: Option<String>,
+ pub oem_info: Option<String>,
+ pub percentage: Option<f64>,
+}
+
+#[derive(Clone, Debug, Default)]
+pub struct AcpiPowerSnapshot {
+ pub adapters: Vec<AcpiPowerAdapter>,
+ pub batteries: Vec<AcpiBattery>,
+}
+
+impl AcpiPowerSnapshot {
+ pub fn on_battery(&self) -> bool {
+ if self.adapters.iter().any(|adapter| adapter.online) {
+ return false;
+ }
+
+ self.batteries
+ .iter()
+ .any(|battery| battery.state & 0x1 != 0)
+ }
+}
+
+fn sanitize_power_id(path: &str) -> String {
+ let sanitized = path
+ .chars()
+ .map(|ch| if ch.is_ascii_alphanumeric() { ch } else { '_' })
+ .collect::<String>()
+ .trim_matches('_')
+ .to_string();
+
+ if sanitized.is_empty() {
+ String::from("device")
+ } else {
+ sanitized
+ }
+}
+
+fn aml_value_as_integer(value: &AmlSerdeValue) -> Option<u64> {
+ match value {
+ AmlSerdeValue::Integer(value) => Some(*value),
+ _ => None,
+ }
+}
+
+fn aml_value_as_string(value: &AmlSerdeValue) -> Option<String> {
+ match value {
+ AmlSerdeValue::String(value) => {
+ let trimmed = value.trim();
+ if trimmed.is_empty() {
+ None
+ } else {
+ Some(trimmed.to_string())
+ }
+ }
+ _ => None,
+ }
+}
+
+fn power_unit_name(value: u64) -> Option<&'static str> {
+ match value {
+ 0 => Some("mWh"),
+ 1 => Some("mAh"),
+ _ => None,
+ }
+}
+
+fn battery_technology_name(value: u64) -> Option<&'static str> {
+ match value {
+ 0 => Some("non-rechargeable"),
+ 1 => Some("rechargeable"),
+ _ => None,
+ }
+}
+
+fn battery_percentage(remaining_capacity: u64, full_capacity: u64) -> Option<f64> {
+ if full_capacity == 0 {
+ return None;
+ }
+
+ Some((remaining_capacity as f64 * 100.0 / full_capacity as f64).clamp(0.0, 100.0))
+}
+
pub struct AcpiContext {
tables: Vec<Sdt>,
dsdt: Option<Dsdt>,
fadt: Option<Fadt>,
+ pm1a_cnt_blk: u64,
+ pm1b_cnt_blk: u64,
+ s5_values: RwLock<Option<(u8, u8)>>,
+ reset_reg: Option<GenericAddress>,
+ reset_value: u8,
+
+ pci_fd: RwLock<Option<libredox::Fd>>,
aml_symbols: RwLock<AmlSymbols>,
@@ -388,16 +967,187 @@ pub struct AcpiContext {
sdt_order: RwLock<Vec<Option<SdtSignature>>>,
pub next_ctx: RwLock<u64>,
+ dmi_info: Option<DmiInfo>,
}
impl AcpiContext {
+ fn evaluate_acpi_object(
+ &self,
+ path: &str,
+ object: &str,
+ args: &[u64],
+ ) -> Result<AmlSerdeValue, AmlEvalError> {
+ let full_path = format!("{path}.{object}");
+ let aml_name =
+ AmlName::from_str(&full_path).map_err(|_| AmlEvalError::DeserializationError)?;
+ let args = args
+ .iter()
+ .copied()
+ .map(AmlSerdeValue::Integer)
+ .collect::<Vec<_>>();
+
+ self.aml_eval(aml_name, args)
+ }
+
+ fn try_evaluate_acpi_object(
+ &self,
+ path: &str,
+ object: &str,
+ args: &[u64],
+ ) -> Option<AmlSerdeValue> {
+ match self.evaluate_acpi_object(path, object, args) {
+ Ok(value) => Some(value),
+ Err(error) => {
+ log::debug!("Failed to evaluate {}.{}: {:?}", path, object, error);
+ None
+ }
+ }
+ }
+
+ fn power_device_paths(&self) -> Result<Vec<String>, AmlEvalError> {
+ let mut symbols = self.aml_symbols.write();
+ let pci_fd = self.pci_fd.read();
+ let interpreter = symbols.aml_context_mut(pci_fd.as_ref())?;
+
+ let mut names = Vec::with_capacity(512);
+ {
+ let mut namespace = interpreter.namespace.lock();
+ namespace
+ .traverse(|level_aml_name, level| {
+ for (child_seg, _) in level.values.iter() {
+ if let Ok(aml_name) =
+ AmlName::from_name_seg(child_seg.to_owned()).resolve(level_aml_name)
+ {
+ names.push(aml_name);
+ }
+ }
+ Ok(true)
+ })
+ .map_err(AmlEvalError::from)?;
+ }
+
+ let mut namespace = interpreter.namespace.lock();
+ let mut devices = Vec::new();
+
+ for name in names {
+ let Ok(object) = namespace.get(name.clone()) else {
+ continue;
+ };
+
+ if matches!(object.deref(), Object::Device) {
+ devices.push(name.to_string());
+ }
+ }
+
+ Ok(devices)
+ }
+
+ fn power_device_present(&self, path: &str) -> bool {
+ match self.try_evaluate_acpi_object(path, "_STA", &[]) {
+ Some(AmlSerdeValue::Integer(status)) => status & 0x1 != 0,
+ Some(_) => false,
+ None => true,
+ }
+ }
+
+ fn power_adapter_from_path(&self, path: &str) -> Option<AcpiPowerAdapter> {
+ let online = match self.try_evaluate_acpi_object(path, "_PSR", &[])? {
+ AmlSerdeValue::Integer(value) => value != 0,
+ _ => return None,
+ };
+
+ Some(AcpiPowerAdapter {
+ id: sanitize_power_id(path),
+ path: path.to_string(),
+ online,
+ })
+ }
+
+ fn power_battery_from_path(&self, path: &str) -> Option<AcpiBattery> {
+ let bif_contents = match self.try_evaluate_acpi_object(path, "_BIF", &[])? {
+ AmlSerdeValue::Package { contents } => contents,
+ _ => return None,
+ };
+ let bst_contents = match self.try_evaluate_acpi_object(path, "_BST", &[])? {
+ AmlSerdeValue::Package { contents } => contents,
+ _ => return None,
+ };
+
+ if bif_contents.len() < 13 || bst_contents.len() < 4 {
+ return None;
+ }
+
+ let state = aml_value_as_integer(&bst_contents[0])?;
+ let present_rate = aml_value_as_integer(&bst_contents[1]);
+ let remaining_capacity = aml_value_as_integer(&bst_contents[2]);
+ let present_voltage = aml_value_as_integer(&bst_contents[3]);
+
+ let design_capacity = aml_value_as_integer(&bif_contents[1]);
+ let last_full_capacity = aml_value_as_integer(&bif_contents[2]);
+ let design_voltage = aml_value_as_integer(&bif_contents[4]);
+ let percentage = remaining_capacity.and_then(|remaining| {
+ let full_capacity = last_full_capacity.or(design_capacity)?;
+ battery_percentage(remaining, full_capacity)
+ });
+
+ Some(AcpiBattery {
+ id: sanitize_power_id(path),
+ path: path.to_string(),
+ state,
+ present_rate,
+ remaining_capacity,
+ present_voltage,
+ power_unit: aml_value_as_integer(&bif_contents[0])
+ .and_then(power_unit_name)
+ .map(str::to_string),
+ design_capacity,
+ last_full_capacity,
+ design_voltage,
+ technology: aml_value_as_integer(&bif_contents[3])
+ .and_then(battery_technology_name)
+ .map(str::to_string),
+ model: aml_value_as_string(&bif_contents[9]),
+ serial: aml_value_as_string(&bif_contents[10]),
+ battery_type: aml_value_as_string(&bif_contents[11]),
+ oem_info: aml_value_as_string(&bif_contents[12]),
+ percentage,
+ })
+ }
+
+ pub fn power_snapshot(&self) -> Result<AcpiPowerSnapshot, AmlEvalError> {
+ let mut adapters = Vec::new();
+ let mut batteries = Vec::new();
+
+ for device_path in self.power_device_paths()? {
+ if !self.power_device_present(&device_path) {
+ continue;
+ }
+
+ if let Some(adapter) = self.power_adapter_from_path(&device_path) {
+ adapters.push(adapter);
+ }
+ if let Some(battery) = self.power_battery_from_path(&device_path) {
+ batteries.push(battery);
+ }
+ }
+
+ adapters.sort_by(|left, right| left.id.cmp(&right.id));
+ batteries.sort_by(|left, right| left.id.cmp(&right.id));
+
+ Ok(AcpiPowerSnapshot {
+ adapters,
+ batteries,
+ })
+ }
+
pub fn aml_eval(
&self,
symbol: AmlName,
args: Vec<AmlSerdeValue>,
) -> Result<AmlSerdeValue, AmlEvalError> {
let mut symbols = self.aml_symbols.write();
- let interpreter = symbols.aml_context_mut(None)?;
+ let pci_fd = self.pci_fd.read();
+ let interpreter = symbols.aml_context_mut(pci_fd.as_ref())?;
interpreter.acquire_global_lock(16)?;
let args = args
@@ -424,6 +1174,54 @@ impl AcpiContext {
.flatten()
}
+ pub fn evaluate_acpi_method(
+ &self,
+ path: &str,
+ method: &str,
+ args: &[u64],
+ ) -> Result<Vec<u64>, AmlEvalError> {
+ match self.evaluate_acpi_object(path, method, args)? {
+ AmlSerdeValue::Integer(value) => Ok(vec![value]),
+ AmlSerdeValue::Package { contents } => contents
+ .into_iter()
+ .map(|value| match value {
+ AmlSerdeValue::Integer(value) => Ok(value),
+ _ => Err(AmlEvalError::DeserializationError),
+ })
+ .collect(),
+ _ => Err(AmlEvalError::DeserializationError),
+ }
+ }
+
+ pub fn device_power_on(&self, device_path: &str) {
+ match self.evaluate_acpi_method(device_path, "_PS0", &[]) {
+ Ok(values) => {
+ log::debug!("{}._PS0 => {:?}", device_path, values);
+ }
+ Err(error) => {
+ log::warn!("Failed to power on {} with _PS0: {:?}", device_path, error);
+ }
+ }
+ }
+
+ pub fn device_power_off(&self, device_path: &str) {
+ match self.evaluate_acpi_method(device_path, "_PS3", &[]) {
+ Ok(values) => {
+ log::debug!("{}._PS3 => {:?}", device_path, values);
+ }
+ Err(error) => {
+ log::warn!("Failed to power off {} with _PS3: {:?}", device_path, error);
+ }
+ }
+ }
+
+ pub fn device_get_performance(&self, device_path: &str) -> Result<u64, AmlEvalError> {
+ self.evaluate_acpi_method(device_path, "_PPC", &[])?
+ .into_iter()
+ .next()
+ .ok_or(AmlEvalError::DeserializationError)
+ }
+
pub fn init(
rxsdt_physaddrs: impl Iterator<Item = u64>,
ec: Vec<(RegionSpace, Box<dyn RegionHandler>)>,
@@ -440,10 +1238,20 @@ impl AcpiContext {
})
.collect::<Vec<Sdt>>();
+ let dmi_info = load_dmi_info();
+ let tables = apply_acpi_table_quirks(tables, dmi_info.as_ref());
+
let mut this = Self {
tables,
dsdt: None,
fadt: None,
+ pm1a_cnt_blk: 0,
+ pm1b_cnt_blk: 0,
+ s5_values: RwLock::new(None),
+ reset_reg: None,
+ reset_value: 0,
+
+ pci_fd: RwLock::new(None),
// Temporary values
aml_symbols: RwLock::new(AmlSymbols::new(ec)),
@@ -451,6 +1259,7 @@ impl AcpiContext {
next_ctx: RwLock::new(0),
sdt_order: RwLock::new(Vec::new()),
+ dmi_info,
};
for table in &this.tables {
@@ -458,7 +1267,10 @@ impl AcpiContext {
}
Fadt::init(&mut this);
- //TODO (hangs on real hardware): Dmar::init(&this);
+ // DMAR (Intel VT-d) init — previously disabled due to iterator bug (type_bytes copied
+ // instead of len_bytes in DmarRawIter). Safe to call now: on AMD systems, no DMAR table
+ // exists and this returns early with a warning.
+ Dmar::init(&this);
this
}
@@ -521,22 +1333,22 @@ impl AcpiContext {
pub fn tables(&self) -> &[Sdt] {
&self.tables
}
+ pub fn dmi_info(&self) -> Option<&DmiInfo> {
+ self.dmi_info.as_ref()
+ }
pub fn new_index(&self, signature: &SdtSignature) {
self.sdt_order.write().push(Some(*signature));
}
pub fn aml_lookup(&self, symbol: &str) -> Option<String> {
- if let Ok(aml_symbols) = self.aml_symbols(None) {
+ if let Ok(aml_symbols) = self.aml_symbols() {
aml_symbols.lookup(symbol)
} else {
None
}
}
- pub fn aml_symbols(
- &self,
- pci_fd: Option<&libredox::Fd>,
- ) -> Result<RwLockReadGuard<'_, AmlSymbols>, AmlError> {
+ pub fn aml_symbols(&self) -> Result<RwLockReadGuard<'_, AmlSymbols>, AmlError> {
// return the cached value if it exists
let symbols = self.aml_symbols.read();
if !symbols.symbols_cache().is_empty() {
@@ -549,8 +1361,9 @@ impl AcpiContext {
log::trace!("Creating symbols list");
let mut aml_symbols = self.aml_symbols.write();
+ let pci_fd = self.pci_fd.read();
- aml_symbols.build_cache(pci_fd);
+ aml_symbols.build_cache(pci_fd.as_ref());
// return the cached value
Ok(RwLockWriteGuard::downgrade(aml_symbols))
@@ -559,99 +1372,163 @@ impl AcpiContext {
/// Discard any cached symbols list. To be called if the AML namespace changes.
pub fn aml_symbols_reset(&self) {
let mut aml_symbols = self.aml_symbols.write();
- aml_symbols.symbol_cache = FxHashMap::default();
+ aml_symbols.reset();
}
- /// Set Power State
- /// See https://uefi.org/sites/default/files/resources/ACPI_6_1.pdf
- /// - search for PM1a
- /// See https://forum.osdev.org/viewtopic.php?t=16990 for practical details
- pub fn set_global_s_state(&self, state: u8) {
- if state != 5 {
- return;
- }
- let fadt = match self.fadt() {
- Some(fadt) => fadt,
- None => {
- log::error!("Cannot set global S-state due to missing FADT.");
- return;
- }
- };
+ pub fn pci_ready(&self) -> bool {
+ self.pci_fd.read().is_some()
+ }
- let port = fadt.pm1a_control_block as u16;
- let mut val = 1 << 13;
+ pub fn register_pci_fd(&self, pci_fd: libredox::Fd) -> Result<(), libredox::Fd> {
+ let mut aml_symbols = self.aml_symbols.write();
+ let mut registered_pci_fd = self.pci_fd.write();
- let aml_symbols = self.aml_symbols.read();
+ if registered_pci_fd.is_some() {
+ return Err(pci_fd);
+ }
- let s5_aml_name = match acpi::aml::namespace::AmlName::from_str("\\_S5") {
- Ok(aml_name) => aml_name,
- Err(error) => {
- log::error!("Could not build AmlName for \\_S5, {:?}", error);
- return;
- }
- };
+ *registered_pci_fd = Some(pci_fd);
- let s5 = match &aml_symbols.aml_context {
- Some(aml_context) => match aml_context.namespace.lock().get(s5_aml_name) {
- Ok(s5) => s5,
- Err(error) => {
- log::error!("Cannot set S-state, missing \\_S5, {:?}", error);
- return;
- }
- },
- None => {
- log::error!("Cannot set S-state, AML context not initialized");
- return;
- }
- };
+ if aml_symbols.aml_context.is_some() || !aml_symbols.symbol_cache.is_empty() {
+ log::warn!("PCI registration arrived after AML init; rebuilding AML interpreter state");
+ aml_symbols.reset();
+ }
- let package = match s5.deref() {
- acpi::aml::object::Object::Package(package) => package,
- _ => {
- log::error!("Cannot set S-state, \\_S5 is not a package");
- return;
- }
- };
+ Ok(())
+ }
- let slp_typa = match package[0].deref() {
- acpi::aml::object::Object::Integer(i) => i.to_owned(),
- _ => {
- log::error!("typa is not an Integer");
- return;
- }
- };
- let slp_typb = match package[1].deref() {
- acpi::aml::object::Object::Integer(i) => i.to_owned(),
- _ => {
- log::error!("typb is not an Integer");
- return;
- }
+ pub fn acpi_shutdown(&self) {
+ let Some((slp_typa_s5, slp_typb_s5)) = self.ensure_s5_values() else {
+ log::error!("Cannot shut down with ACPI: failed to resolve \\_S5 sleep type values");
+ return;
};
- log::trace!("Shutdown SLP_TYPa {:X}, SLP_TYPb {:X}", slp_typa, slp_typb);
- val |= slp_typa as u16;
+ let pm1a_value = (u16::from(slp_typa_s5) << 10) | 0x2000;
+ let pm1b_value = (u16::from(slp_typb_s5) << 10) | 0x2000;
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
{
- log::warn!("Shutdown with ACPI outw(0x{:X}, 0x{:X})", port, val);
- Pio::<u16>::new(port).write(val);
- }
+ let Ok(pm1a_port) = u16::try_from(self.pm1a_cnt_blk) else {
+ log::error!("PM1a_CNT_BLK address is invalid: {:#X}", self.pm1a_cnt_blk);
+ return;
+ };
- // TODO: Handle SLP_TYPb
+ log::warn!(
+ "Shutdown with ACPI PM1a_CNT outw(0x{:X}, 0x{:X})",
+ pm1a_port,
+ pm1a_value
+ );
+ Pio::<u16>::new(pm1a_port).write(pm1a_value);
+
+ if self.pm1b_cnt_blk != 0 {
+ match u16::try_from(self.pm1b_cnt_blk) {
+ Ok(pm1b_port) => {
+ log::warn!(
+ "Shutdown with ACPI PM1b_CNT outw(0x{:X}, 0x{:X})",
+ pm1b_port,
+ pm1b_value
+ );
+ Pio::<u16>::new(pm1b_port).write(pm1b_value);
+ }
+ Err(_) => {
+ log::error!("PM1b_CNT_BLK address is invalid: {:#X}", self.pm1b_cnt_blk);
+ }
+ }
+ }
+ }
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
{
log::error!(
- "Cannot shutdown with ACPI outw(0x{:X}, 0x{:X}) on this architecture",
- port,
- val
+ "Cannot shutdown with ACPI PM1_CNT writes on this architecture (PM1a={:#X}, PM1b={:#X})",
+ self.pm1a_cnt_blk,
+ self.pm1b_cnt_blk
);
}
+ }
+
+ pub fn acpi_reboot(&self) {
+ match self.reset_reg {
+ Some(reset_reg) => {
+ log::warn!(
+ "Reboot with ACPI reset register {:?} value {:#X}",
+ reset_reg,
+ self.reset_value
+ );
+ reset_reg.write_u8(self.reset_value);
+ }
+ None => {
+ log::error!("Cannot reboot with ACPI: no reset register present in FADT");
+ }
+ }
+ }
+
+ /// Set Power State
+ /// See https://uefi.org/sites/default/files/resources/ACPI_6_1.pdf
+ /// - search for PM1a
+ /// See https://forum.osdev.org/viewtopic.php?t=16990 for practical details
+ pub fn set_global_s_state(&self, state: u8) {
+ if state != 5 {
+ return;
+ }
+
+ if self.fadt().is_none() {
+ log::error!("Cannot set global S-state due to missing FADT.");
+ return;
+ }
+
+ self.acpi_shutdown();
loop {
core::hint::spin_loop();
}
}
+
+ fn evaluate_s5_values(&self) -> Option<(u8, u8)> {
+ match AmlName::from_str("\\_S5") {
+ Ok(s5_name) => match self.aml_eval(s5_name, Vec::new()) {
+ Ok(AmlSerdeValue::Package { contents }) => match (contents.get(0), contents.get(1))
+ {
+ (
+ Some(AmlSerdeValue::Integer(slp_typa)),
+ Some(AmlSerdeValue::Integer(slp_typb)),
+ ) => match (u8::try_from(*slp_typa), u8::try_from(*slp_typb)) {
+ (Ok(slp_typa_s5), Ok(slp_typb_s5)) => Some((slp_typa_s5, slp_typb_s5)),
+ _ => {
+ log::warn!("\\_S5 values do not fit in u8: {:?}", contents);
+ None
+ }
+ },
+ _ => {
+ log::warn!("\\_S5 package did not contain two integers: {:?}", contents);
+ None
+ }
+ },
+ Ok(value) => {
+ log::warn!("\\_S5 returned unexpected AML value: {:?}", value);
+ None
+ }
+ Err(error) => {
+ log::warn!("Failed to evaluate \\_S5: {:?}", error);
+ None
+ }
+ },
+ Err(error) => {
+ log::warn!("Could not build AmlName for \\_S5: {:?}", error);
+ None
+ }
+ }
+ }
+
+ fn ensure_s5_values(&self) -> Option<(u8, u8)> {
+ if let Some(values) = *self.s5_values.read() {
+ return Some(values);
+ }
+
+ let values = self.evaluate_s5_values()?;
+ *self.s5_values.write() = Some(values);
+ Some(values)
+ }
}
#[repr(C, packed)]
@@ -707,7 +1584,7 @@ unsafe impl plain::Plain for FadtStruct {}
#[repr(C, packed)]
#[derive(Clone, Copy, Debug, Default)]
-pub struct GenericAddressStructure {
+pub struct GenericAddress {
address_space: u8,
bit_width: u8,
bit_offset: u8,
@@ -715,11 +1592,77 @@ pub struct GenericAddressStructure {
address: u64,
}
+impl GenericAddress {
+ pub fn is_empty(&self) -> bool {
+ self.address == 0
+ }
+
+ #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
+ pub fn write_u8(&self, value: u8) {
+ match self.address_space {
+ 0 => {
+ let raw_address = self.address;
+ let Ok(address) = usize::try_from(raw_address) else {
+ log::error!(
+ "Reset register physical address is invalid: {:#X}",
+ raw_address
+ );
+ return;
+ };
+ let page = address / PAGE_SIZE * PAGE_SIZE;
+ let offset = address % PAGE_SIZE;
+ let virt = unsafe {
+ common::physmap(
+ page,
+ PAGE_SIZE,
+ common::Prot::RW,
+ common::MemoryType::default(),
+ )
+ };
+
+ match virt {
+ Ok(virt) => unsafe {
+ (virt as *mut u8).add(offset).write_volatile(value);
+ let _ = libredox::call::munmap(virt, PAGE_SIZE);
+ },
+ Err(error) => {
+ log::error!("Failed to map ACPI reset register: {}", error);
+ }
+ }
+ }
+ 1 => match u16::try_from(self.address) {
+ Ok(port) => {
+ Pio::<u8>::new(port).write(value);
+ }
+ Err(_) => {
+ let raw_address = self.address;
+ log::error!("Reset register I/O port is invalid: {:#X}", raw_address);
+ }
+ },
+ address_space => {
+ log::warn!(
+ "Unsupported ACPI reset register address space {} for {:?}",
+ address_space,
+ self
+ );
+ }
+ }
+ }
+
+ #[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
+ pub fn write_u8(&self, _value: u8) {
+ log::error!(
+ "Cannot access ACPI reset register {:?} on this architecture",
+ self
+ );
+ }
+}
+
#[repr(C, packed)]
#[derive(Clone, Copy, Debug)]
pub struct FadtAcpi2Struct {
// 12 byte structure; see below for details
- pub reset_reg: GenericAddressStructure,
+ pub reset_reg: GenericAddress,
pub reset_value: u8,
reserved3: [u8; 3],
@@ -728,14 +1671,14 @@ pub struct FadtAcpi2Struct {
pub x_firmware_control: u64,
pub x_dsdt: u64,
- pub x_pm1a_event_block: GenericAddressStructure,
- pub x_pm1b_event_block: GenericAddressStructure,
- pub x_pm1a_control_block: GenericAddressStructure,
- pub x_pm1b_control_block: GenericAddressStructure,
- pub x_pm2_control_block: GenericAddressStructure,
- pub x_pm_timer_block: GenericAddressStructure,
- pub x_gpe0_block: GenericAddressStructure,
- pub x_gpe1_block: GenericAddressStructure,
+ pub x_pm1a_event_block: GenericAddress,
+ pub x_pm1b_event_block: GenericAddress,
+ pub x_pm1a_control_block: GenericAddress,
+ pub x_pm1b_control_block: GenericAddress,
+ pub x_pm2_control_block: GenericAddress,
+ pub x_pm_timer_block: GenericAddress,
+ pub x_gpe0_block: GenericAddress,
+ pub x_gpe1_block: GenericAddress,
}
unsafe impl plain::Plain for FadtAcpi2Struct {}
@@ -793,9 +1736,27 @@ impl Fadt {
None => usize::try_from(fadt.dsdt).expect("expected any given u32 to fit within usize"),
};
- log::debug!("FACP at {:X}", { dsdt_ptr });
+ let pm1a_evt_blk = u64::from(fadt.pm1a_event_block);
+ let pm1b_evt_blk = u64::from(fadt.pm1b_event_block);
+ let pm1a_cnt_blk = u64::from(fadt.pm1a_control_block);
+ let pm1b_cnt_blk = u64::from(fadt.pm1b_control_block);
+ let (reset_reg, reset_value) = match fadt.acpi_2_struct() {
+ Some(fadt2) if !fadt2.reset_reg.is_empty() => {
+ (Some(fadt2.reset_reg), fadt2.reset_value)
+ }
+ _ => (None, 0),
+ };
- let dsdt_sdt = match Sdt::load_from_physical(fadt.dsdt as usize) {
+ log::debug!("FACP at {:X}", { dsdt_ptr });
+ log::debug!(
+ "FADT power blocks: PM1a_EVT={:#X}, PM1b_EVT={:#X}, PM1a_CNT={:#X}, PM1b_CNT={:#X}",
+ pm1a_evt_blk,
+ pm1b_evt_blk,
+ pm1a_cnt_blk,
+ pm1b_cnt_blk
+ );
+
+ let dsdt_sdt = match Sdt::load_from_physical(dsdt_ptr) {
Ok(dsdt) => dsdt,
Err(error) => {
log::error!("Failed to load DSDT: {}", error);
@@ -805,6 +1766,10 @@ impl Fadt {
context.fadt = Some(fadt.clone());
context.dsdt = Some(Dsdt(dsdt_sdt.clone()));
+ context.pm1a_cnt_blk = pm1a_cnt_blk;
+ context.pm1b_cnt_blk = pm1b_cnt_blk;
+ context.reset_reg = reset_reg;
+ context.reset_value = reset_value;
context.tables.push(dsdt_sdt);
}
diff --git a/drivers/acpid/src/scheme.rs b/drivers/acpid/src/scheme.rs
index 5a5040c3..5f1232bd 100644
--- a/drivers/acpid/src/scheme.rs
+++ b/drivers/acpid/src/scheme.rs
@@ -2,7 +2,6 @@ use acpi::aml::namespace::AmlName;
use amlserde::aml_serde_name::to_aml_format;
use amlserde::AmlSerdeValue;
use core::str;
-use libredox::Fd;
use parking_lot::RwLockReadGuard;
use redox_scheme::scheme::SchemeSync;
use redox_scheme::{CallerCtx, OpenResult, SendFdRequest, Socket};
@@ -16,17 +15,19 @@ use syscall::FobtainFdFlags;
use syscall::data::Stat;
use syscall::error::{Error, Result};
-use syscall::error::{EACCES, EBADF, EBADFD, EINVAL, EIO, EISDIR, ENOENT, ENOTDIR};
+use syscall::error::{EACCES, EAGAIN, EBADF, EBADFD, EINVAL, EIO, EISDIR, ENOENT, ENOTDIR};
use syscall::flag::{MODE_DIR, MODE_FILE};
use syscall::flag::{O_ACCMODE, O_DIRECTORY, O_RDONLY, O_STAT, O_SYMLINK};
use syscall::{EOVERFLOW, EPERM};
-use crate::acpi::{AcpiContext, AmlSymbols, SdtSignature};
+use crate::acpi::{
+ AcpiBattery, AcpiContext, AcpiPowerAdapter, AcpiPowerSnapshot, AmlSymbols, DmiInfo,
+ SdtSignature,
+};
pub struct AcpiScheme<'acpi, 'sock> {
ctx: &'acpi AcpiContext,
handles: HandleMap<Handle<'acpi>>,
- pci_fd: Option<Fd>,
socket: &'sock Socket,
}
@@ -41,10 +42,156 @@ enum HandleKind<'a> {
Table(SdtSignature),
Symbols(RwLockReadGuard<'a, AmlSymbols>),
Symbol { name: String, description: String },
+ DmiDir,
+ Dmi(String),
+ PowerDir,
+ PowerAdaptersDir,
+ PowerAdapterDir(String),
+ PowerBatteriesDir,
+ PowerBatteryDir(String),
+ PowerFile(String),
SchemeRoot,
RegisterPci,
}
+const DMI_DIRECTORY_ENTRIES: &[&str] = &[
+ "sys_vendor",
+ "board_vendor",
+ "board_name",
+ "board_version",
+ "product_name",
+ "product_version",
+ "bios_version",
+ "match_all",
+];
+
+fn dmi_contents(dmi_info: Option<&DmiInfo>, name: &str) -> Option<String> {
+ Some(match name {
+ "sys_vendor" => dmi_info
+ .and_then(|info| info.sys_vendor.clone())
+ .unwrap_or_default(),
+ "board_vendor" => dmi_info
+ .and_then(|info| info.board_vendor.clone())
+ .unwrap_or_default(),
+ "board_name" => dmi_info
+ .and_then(|info| info.board_name.clone())
+ .unwrap_or_default(),
+ "board_version" => dmi_info
+ .and_then(|info| info.board_version.clone())
+ .unwrap_or_default(),
+ "product_name" => dmi_info
+ .and_then(|info| info.product_name.clone())
+ .unwrap_or_default(),
+ "product_version" => dmi_info
+ .and_then(|info| info.product_version.clone())
+ .unwrap_or_default(),
+ "bios_version" => dmi_info
+ .and_then(|info| info.bios_version.clone())
+ .unwrap_or_default(),
+ "match_all" => dmi_info.map(DmiInfo::to_match_lines).unwrap_or_default(),
+ _ => return None,
+ })
+}
+
+fn power_bool_contents(value: bool) -> String {
+ if value {
+ String::from("1\n")
+ } else {
+ String::from("0\n")
+ }
+}
+
+fn power_u64_contents(value: u64) -> String {
+ format!("{value}\n")
+}
+
+fn power_f64_contents(value: f64) -> String {
+ format!("{value}\n")
+}
+
+fn power_string_contents(value: &str) -> String {
+ format!("{value}\n")
+}
+
+fn power_adapter_file_contents(adapter: &AcpiPowerAdapter, name: &str) -> Option<String> {
+ Some(match name {
+ "path" => power_string_contents(&adapter.path),
+ "online" => power_bool_contents(adapter.online),
+ _ => return None,
+ })
+}
+
+fn power_adapter_entry_names() -> &'static [&'static str] {
+ &["path", "online"]
+}
+
+fn power_battery_file_contents(battery: &AcpiBattery, name: &str) -> Option<String> {
+ Some(match name {
+ "path" => power_string_contents(&battery.path),
+ "state" => power_u64_contents(battery.state),
+ "present_rate" => power_u64_contents(battery.present_rate?),
+ "remaining_capacity" => power_u64_contents(battery.remaining_capacity?),
+ "present_voltage" => power_u64_contents(battery.present_voltage?),
+ "power_unit" => power_string_contents(battery.power_unit.as_deref()?),
+ "design_capacity" => power_u64_contents(battery.design_capacity?),
+ "last_full_capacity" => power_u64_contents(battery.last_full_capacity?),
+ "design_voltage" => power_u64_contents(battery.design_voltage?),
+ "technology" => power_string_contents(battery.technology.as_deref()?),
+ "model" => power_string_contents(battery.model.as_deref()?),
+ "serial" => power_string_contents(battery.serial.as_deref()?),
+ "battery_type" => power_string_contents(battery.battery_type.as_deref()?),
+ "oem_info" => power_string_contents(battery.oem_info.as_deref()?),
+ "percentage" => power_f64_contents(battery.percentage?),
+ _ => return None,
+ })
+}
+
+fn power_battery_entry_names(battery: &AcpiBattery) -> Vec<&'static str> {
+ let mut names = vec!["path", "state"];
+
+ if battery.present_rate.is_some() {
+ names.push("present_rate");
+ }
+ if battery.remaining_capacity.is_some() {
+ names.push("remaining_capacity");
+ }
+ if battery.present_voltage.is_some() {
+ names.push("present_voltage");
+ }
+ if battery.power_unit.is_some() {
+ names.push("power_unit");
+ }
+ if battery.design_capacity.is_some() {
+ names.push("design_capacity");
+ }
+ if battery.last_full_capacity.is_some() {
+ names.push("last_full_capacity");
+ }
+ if battery.design_voltage.is_some() {
+ names.push("design_voltage");
+ }
+ if battery.technology.is_some() {
+ names.push("technology");
+ }
+ if battery.model.is_some() {
+ names.push("model");
+ }
+ if battery.serial.is_some() {
+ names.push("serial");
+ }
+ if battery.battery_type.is_some() {
+ names.push("battery_type");
+ }
+ if battery.oem_info.is_some() {
+ names.push("oem_info");
+ }
+ if battery.percentage.is_some() {
+ names.push("percentage");
+ }
+
+ names
+}
+
impl HandleKind<'_> {
fn is_dir(&self) -> bool {
match self {
@@ -53,6 +200,14 @@ impl HandleKind<'_> {
Self::Table(_) => false,
Self::Symbols(_) => true,
Self::Symbol { .. } => false,
+ Self::DmiDir => true,
+ Self::Dmi(_) => false,
+ Self::PowerDir => true,
+ Self::PowerAdaptersDir => true,
+ Self::PowerAdapterDir(_) => true,
+ Self::PowerBatteriesDir => true,
+ Self::PowerBatteryDir(_) => true,
+ Self::PowerFile(_) => false,
Self::SchemeRoot => false,
Self::RegisterPci => false,
}
@@ -65,8 +220,18 @@ impl HandleKind<'_> {
.ok_or(Error::new(EBADFD))?
.length(),
Self::Symbol { description, .. } => description.len(),
+ Self::Dmi(contents) => contents.len(),
+ Self::PowerFile(contents) => contents.len(),
// Directories
- Self::TopLevel | Self::Symbols(_) | Self::Tables => 0,
+ Self::TopLevel
+ | Self::Symbols(_)
+ | Self::Tables
+ | Self::DmiDir
+ | Self::PowerDir
+ | Self::PowerAdaptersDir
+ | Self::PowerAdapterDir(_)
+ | Self::PowerBatteriesDir
+ | Self::PowerBatteryDir(_) => 0,
Self::SchemeRoot | Self::RegisterPci => return Err(Error::new(EBADF)),
})
}
@@ -77,10 +242,99 @@ impl<'acpi, 'sock> AcpiScheme<'acpi, 'sock> {
Self {
ctx,
handles: HandleMap::new(),
- pci_fd: None,
socket,
}
}
+
+ fn power_snapshot(&self) -> Result<AcpiPowerSnapshot> {
+ self.ctx.power_snapshot().map_err(|error| {
+ log::warn!("Failed to build ACPI power snapshot: {:?}", error);
+ Error::new(EIO)
+ })
+ }
+
+ fn power_handle(&self, path: &str) -> Result<HandleKind<'acpi>> {
+ let normalized = path.trim_matches('/');
+
+ if normalized.is_empty() {
+ return Ok(HandleKind::PowerDir);
+ }
+ if normalized == "on_battery" {
+ return Ok(HandleKind::PowerFile(power_bool_contents(
+ self.power_snapshot()?.on_battery(),
+ )));
+ }
+ if normalized == "adapters" {
+ return Ok(HandleKind::PowerAdaptersDir);
+ }
+ if let Some(rest) = normalized.strip_prefix("adapters/") {
+ return self.power_adapter_handle(rest);
+ }
+ if normalized == "batteries" {
+ return Ok(HandleKind::PowerBatteriesDir);
+ }
+ if let Some(rest) = normalized.strip_prefix("batteries/") {
+ return self.power_battery_handle(rest);
+ }
+
+ Err(Error::new(ENOENT))
+ }
+
+ fn power_adapter_handle(&self, path: &str) -> Result<HandleKind<'acpi>> {
+ let normalized = path.trim_matches('/');
+ if normalized.is_empty() {
+ return Ok(HandleKind::PowerAdaptersDir);
+ }
+
+ let mut parts = normalized.split('/');
+ let adapter_id = parts.next().ok_or(Error::new(ENOENT))?;
+ let field = parts.next();
+ if parts.next().is_some() {
+ return Err(Error::new(ENOENT));
+ }
+
+ let snapshot = self.power_snapshot()?;
+ let adapter = snapshot
+ .adapters
+ .iter()
+ .find(|adapter| adapter.id == adapter_id)
+ .ok_or(Error::new(ENOENT))?;
+
+ match field {
+ None | Some("") => Ok(HandleKind::PowerAdapterDir(adapter.id.clone())),
+ Some(name) => Ok(HandleKind::PowerFile(
+ power_adapter_file_contents(adapter, name).ok_or(Error::new(ENOENT))?,
+ )),
+ }
+ }
+
+ fn power_battery_handle(&self, path: &str) -> Result<HandleKind<'acpi>> {
+ let normalized = path.trim_matches('/');
+ if normalized.is_empty() {
+ return Ok(HandleKind::PowerBatteriesDir);
+ }
+
+ let mut parts = normalized.split('/');
+ let battery_id = parts.next().ok_or(Error::new(ENOENT))?;
+ let field = parts.next();
+ if parts.next().is_some() {
+ return Err(Error::new(ENOENT));
+ }
+
+ let snapshot = self.power_snapshot()?;
+ let battery = snapshot
+ .batteries
+ .iter()
+ .find(|battery| battery.id == battery_id)
+ .ok_or(Error::new(ENOENT))?;
+
+ match field {
+ None | Some("") => Ok(HandleKind::PowerBatteryDir(battery.id.clone())),
+ Some(name) => Ok(HandleKind::PowerFile(
+ power_battery_file_contents(battery, name).ok_or(Error::new(ENOENT))?,
+ )),
+ }
+ }
}
fn parse_hex_digit(hex: u8) -> Option<u8> {
@@ -184,9 +438,9 @@ impl SchemeSync for AcpiScheme<'_, '_> {
HandleKind::SchemeRoot => {
// TODO: arrayvec
let components = {
- let mut v = arrayvec::ArrayVec::<&str, 3>::new();
+ let mut v = arrayvec::ArrayVec::<&str, 4>::new();
let it = path.split('/');
- for component in it.take(3) {
+ for component in it.take(4) {
v.push(component);
}
@@ -195,6 +449,24 @@ impl SchemeSync for AcpiScheme<'_, '_> {
match &*components {
[""] => HandleKind::TopLevel,
+ ["dmi"] => {
+ if flag_dir || flag_stat || path.ends_with('/') {
+ HandleKind::DmiDir
+ } else {
+ HandleKind::Dmi(
+ dmi_contents(self.ctx.dmi_info(), "match_all")
+ .expect("match_all should always resolve"),
+ )
+ }
+ }
+ ["dmi", ""] => HandleKind::DmiDir,
+ ["dmi", field] => HandleKind::Dmi(
+ dmi_contents(self.ctx.dmi_info(), field).ok_or(Error::new(ENOENT))?,
+ ),
+ ["power"] => self.power_handle("")?,
+ ["power", tail] => self.power_handle(tail)?,
+ ["power", a, b] => self.power_handle(&format!("{a}/{b}"))?,
+ ["power", a, b, c] => self.power_handle(&format!("{a}/{b}/{c}"))?,
["register_pci"] => HandleKind::RegisterPci,
["tables"] => HandleKind::Tables,
@@ -204,7 +476,11 @@ impl SchemeSync for AcpiScheme<'_, '_> {
}
["symbols"] => {
- if let Ok(aml_symbols) = self.ctx.aml_symbols(self.pci_fd.as_ref()) {
+ if !self.ctx.pci_ready() {
+ log::warn!("Deferring AML symbol scan until PCI registration is ready");
+ return Err(Error::new(EAGAIN));
+ }
+ if let Ok(aml_symbols) = self.ctx.aml_symbols() {
HandleKind::Symbols(aml_symbols)
} else {
return Err(Error::new(EIO));
@@ -212,6 +488,12 @@ impl SchemeSync for AcpiScheme<'_, '_> {
}
["symbols", symbol] => {
+ if !self.ctx.pci_ready() {
+ log::warn!(
+ "Deferring AML symbol lookup for {symbol} until PCI registration is ready"
+ );
+ return Err(Error::new(EAGAIN));
+ }
if let Some(description) = self.ctx.aml_lookup(symbol) {
HandleKind::Symbol {
name: (*symbol).to_owned(),
@@ -225,6 +507,15 @@ impl SchemeSync for AcpiScheme<'_, '_> {
_ => return Err(Error::new(ENOENT)),
}
}
+ HandleKind::DmiDir => {
+ if path.is_empty() {
+ HandleKind::DmiDir
+ } else {
+ HandleKind::Dmi(
+ dmi_contents(self.ctx.dmi_info(), path).ok_or(Error::new(ENOENT))?,
+ )
+ }
+ }
HandleKind::Symbols(ref aml_symbols) => {
if let Some(description) = aml_symbols.lookup(path) {
HandleKind::Symbol {
@@ -235,6 +526,23 @@ impl SchemeSync for AcpiScheme<'_, '_> {
return Err(Error::new(ENOENT));
}
}
+ HandleKind::PowerDir => self.power_handle(path)?,
+ HandleKind::PowerAdaptersDir => self.power_adapter_handle(path)?,
+ HandleKind::PowerAdapterDir(ref adapter_id) => {
+ if path.is_empty() {
+ HandleKind::PowerAdapterDir(adapter_id.clone())
+ } else {
+ self.power_adapter_handle(&format!("{adapter_id}/{path}"))?
+ }
+ }
+ HandleKind::PowerBatteriesDir => self.power_battery_handle(path)?,
+ HandleKind::PowerBatteryDir(ref battery_id) => {
+ if path.is_empty() {
+ HandleKind::PowerBatteryDir(battery_id.clone())
+ } else {
+ self.power_battery_handle(&format!("{battery_id}/{path}"))?
+ }
+ }
_ => return Err(Error::new(EACCES)),
};
@@ -296,7 +604,7 @@ impl SchemeSync for AcpiScheme<'_, '_> {
) -> Result<usize> {
let offset: usize = offset.try_into().map_err(|_| Error::new(EINVAL))?;
- let handle = self.handles.get_mut(id)?;
+ let handle = self.handles.get(id)?;
if handle.stat {
return Err(Error::new(EBADF));
@@ -309,6 +617,8 @@ impl SchemeSync for AcpiScheme<'_, '_> {
.ok_or(Error::new(EBADFD))?
.as_slice(),
HandleKind::Symbol { description, .. } => description.as_bytes(),
+ HandleKind::Dmi(contents) => contents.as_bytes(),
+ HandleKind::PowerFile(contents) => contents.as_bytes(),
_ => return Err(Error::new(EINVAL)),
};
@@ -328,11 +638,11 @@ impl SchemeSync for AcpiScheme<'_, '_> {
mut buf: DirentBuf<&'buf mut [u8]>,
opaque_offset: u64,
) -> Result<DirentBuf<&'buf mut [u8]>> {
- let handle = self.handles.get_mut(id)?;
+ let handle = self.handles.get(id)?;
match &handle.kind {
HandleKind::TopLevel => {
- const TOPLEVEL_ENTRIES: &[&str] = &["tables", "symbols"];
+ const TOPLEVEL_ENTRIES: &[&str] = &["tables", "symbols", "dmi", "power"];
for (idx, name) in TOPLEVEL_ENTRIES
.iter()
@@ -347,6 +657,111 @@ impl SchemeSync for AcpiScheme<'_, '_> {
})?;
}
}
+ HandleKind::DmiDir => {
+ for (idx, name) in DMI_DIRECTORY_ENTRIES
+ .iter()
+ .enumerate()
+ .skip(opaque_offset as usize)
+ {
+ buf.entry(DirEntry {
+ inode: 0,
+ next_opaque_id: idx as u64 + 1,
+ name,
+ kind: DirentKind::Regular,
+ })?;
+ }
+ }
+ HandleKind::PowerDir => {
+ const POWER_ROOT_ENTRIES: &[(&str, DirentKind)] = &[
+ ("on_battery", DirentKind::Regular),
+ ("adapters", DirentKind::Directory),
+ ("batteries", DirentKind::Directory),
+ ];
+
+ for (idx, (name, kind)) in POWER_ROOT_ENTRIES
+ .iter()
+ .enumerate()
+ .skip(opaque_offset as usize)
+ {
+ buf.entry(DirEntry {
+ inode: 0,
+ next_opaque_id: idx as u64 + 1,
+ name,
+ kind: *kind,
+ })?;
+ }
+ }
+ HandleKind::PowerAdaptersDir => {
+ let snapshot = self.power_snapshot()?;
+ for (idx, adapter) in snapshot
+ .adapters
+ .iter()
+ .enumerate()
+ .skip(opaque_offset as usize)
+ {
+ buf.entry(DirEntry {
+ inode: 0,
+ next_opaque_id: idx as u64 + 1,
+ name: adapter.id.as_str(),
+ kind: DirentKind::Directory,
+ })?;
+ }
+ }
+ HandleKind::PowerAdapterDir(adapter_id) => {
+ let snapshot = self.power_snapshot()?;
+ let _adapter = snapshot
+ .adapters
+ .iter()
+ .find(|adapter| adapter.id == *adapter_id)
+ .ok_or(Error::new(EIO))?;
+
+ for (idx, name) in power_adapter_entry_names()
+ .iter()
+ .enumerate()
+ .skip(opaque_offset as usize)
+ {
+ buf.entry(DirEntry {
+ inode: 0,
+ next_opaque_id: idx as u64 + 1,
+ name,
+ kind: DirentKind::Regular,
+ })?;
+ }
+ }
+ HandleKind::PowerBatteriesDir => {
+ let snapshot = self.power_snapshot()?;
+ for (idx, battery) in snapshot
+ .batteries
+ .iter()
+ .enumerate()
+ .skip(opaque_offset as usize)
+ {
+ buf.entry(DirEntry {
+ inode: 0,
+ next_opaque_id: idx as u64 + 1,
+ name: battery.id.as_str(),
+ kind: DirentKind::Directory,
+ })?;
+ }
+ }
+ HandleKind::PowerBatteryDir(battery_id) => {
+ let snapshot = self.power_snapshot()?;
+ let battery = snapshot
+ .batteries
+ .iter()
+ .find(|battery| battery.id == *battery_id)
+ .ok_or(Error::new(EIO))?;
+ let entry_names = power_battery_entry_names(battery);
+
+ for (idx, name) in entry_names.iter().enumerate().skip(opaque_offset as usize) {
+ buf.entry(DirEntry {
+ inode: 0,
+ next_opaque_id: idx as u64 + 1,
+ name,
+ kind: DirentKind::Regular,
+ })?;
+ }
+ }
HandleKind::Symbols(aml_symbols) => {
for (idx, (symbol_name, _value)) in aml_symbols
.symbols_cache()
@@ -470,10 +885,8 @@ impl SchemeSync for AcpiScheme<'_, '_> {
}
let new_fd = libredox::Fd::new(new_fd);
- if self.pci_fd.is_some() {
+ if self.ctx.register_pci_fd(new_fd).is_err() {
return Err(Error::new(EINVAL));
- } else {
- self.pci_fd = Some(new_fd);
}
Ok(num_fds)
@@ -483,3 +896,38 @@ impl SchemeSync for AcpiScheme<'_, '_> {
self.handles.remove(id);
}
}
+
+#[cfg(test)]
+mod tests {
+ use super::dmi_contents;
+ use crate::acpi::DmiInfo;
+
+ #[test]
+ fn dmi_contents_exposes_individual_fields_and_match_all() {
+ let dmi_info = DmiInfo {
+ sys_vendor: Some("Framework".to_string()),
+ board_name: Some("FRANMECP01".to_string()),
+ product_name: Some("Laptop 16".to_string()),
+ ..DmiInfo::default()
+ };
+
+ assert_eq!(
+ dmi_contents(Some(&dmi_info), "sys_vendor").as_deref(),
+ Some("Framework")
+ );
+ assert_eq!(
+ dmi_contents(Some(&dmi_info), "board_name").as_deref(),
+ Some("FRANMECP01")
+ );
+ assert_eq!(
+ dmi_contents(Some(&dmi_info), "product_name").as_deref(),
+ Some("Laptop 16")
+ );
+ assert_eq!(
+ dmi_contents(Some(&dmi_info), "match_all").as_deref(),
+ Some("sys_vendor=Framework\nboard_name=FRANMECP01\nproduct_name=Laptop 16")
+ );
+ assert_eq!(dmi_contents(None, "bios_version").as_deref(), Some(""));
+ assert_eq!(dmi_contents(Some(&dmi_info), "unknown"), None);
+ }
+}
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