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use windows_kernel_sys::base::{
MM_COPY_ADDRESS,
MM_COPY_MEMORY_PHYSICAL,
MM_COPY_MEMORY_VIRTUAL,
PHYSICAL_ADDRESS,
_MEMORY_CACHING_TYPE as MEMORY_CACHING_TYPE,
};
use crate::error::{Error, IntoResult};
#[repr(i32)]
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum MemoryCaching {
NonCached = MEMORY_CACHING_TYPE::MmNonCached,
Cached = MEMORY_CACHING_TYPE::MmCached,
WriteCombined = MEMORY_CACHING_TYPE::MmWriteCombined,
#[cfg(feature = "system")]
HardwareCoherentCached = MEMORY_CACHING_TYPE::MmHardwareCoherentCached,
#[cfg(feature = "system")]
NonCachedUnordered = MEMORY_CACHING_TYPE::MmNonCachedUnordered,
#[cfg(feature = "system")]
USWCCached = MEMORY_CACHING_TYPE::MmUSWCCached,
NotMapped = MEMORY_CACHING_TYPE::MmNotMapped,
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct PhysicalAddress(u64);
impl From<u64> for PhysicalAddress {
fn from(value: u64) -> Self { Self(value) }
}
// impl Into<u64> for PhysicalAddress {
// fn into(self) -> u64 { self.0 }
// }
impl From<PhysicalAddress> for u64 {
fn from(p: PhysicalAddress) -> Self {
p.0
}
}
impl From<PHYSICAL_ADDRESS> for PhysicalAddress {
fn from(value: PHYSICAL_ADDRESS) -> Self { Self(unsafe { value.QuadPart } as _) }
}
// impl Into<PHYSICAL_ADDRESS> for PhysicalAddress {
// fn into(self) -> PHYSICAL_ADDRESS {
// let mut addr: PHYSICAL_ADDRESS = unsafe { core::mem::zeroed() };
//
// addr.QuadPart = self.0 as _;
//
// addr
// }
// }
impl From<PhysicalAddress> for PHYSICAL_ADDRESS {
fn from(p: PhysicalAddress) -> Self {
let mut addr: PHYSICAL_ADDRESS = unsafe { core::mem::zeroed() };
addr.QuadPart = p.0 as _;
addr
}
}
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum CopyAddress {
Virtual(*mut core::ffi::c_void),
Physical(PhysicalAddress),
}
unsafe impl Send for CopyAddress {}
unsafe impl Sync for CopyAddress {}
// impl Into<(u32, MM_COPY_ADDRESS)> for CopyAddress {
// fn into(self) -> (u32, MM_COPY_ADDRESS) {
// let mut copy_addr: MM_COPY_ADDRESS = unsafe { core::mem::zeroed() };
//
// let flags = match self {
// CopyAddress::Virtual(addr) => {
// copy_addr.__bindgen_anon_1.VirtualAddress = addr as _;
// MM_COPY_MEMORY_VIRTUAL
// }
// CopyAddress::Physical(addr) => {
// copy_addr.__bindgen_anon_1.PhysicalAddress = addr.into();
// MM_COPY_MEMORY_PHYSICAL
// }
// };
//
// (flags, copy_addr)
// }
// }
impl From<CopyAddress> for (u32, MM_COPY_ADDRESS) {
fn from(c: CopyAddress) -> Self {
let mut copy_addr: MM_COPY_ADDRESS = unsafe { core::mem::zeroed() };
let flags = match c {
CopyAddress::Virtual(addr) => {
copy_addr.__bindgen_anon_1.VirtualAddress = addr as _;
MM_COPY_MEMORY_VIRTUAL
}
CopyAddress::Physical(addr) => {
copy_addr.__bindgen_anon_1.PhysicalAddress = addr.into();
MM_COPY_MEMORY_PHYSICAL
}
};
(flags, copy_addr)
}
}
pub struct IoMapping {
ptr: *mut core::ffi::c_void,
size: usize,
}
unsafe impl Send for IoMapping {}
unsafe impl Sync for IoMapping {}
impl IoMapping {
pub fn new(addr: PhysicalAddress, size: usize, caching: MemoryCaching) -> Result<Self, Error> {
use windows_kernel_sys::ntoskrnl::MmMapIoSpace;
let ptr = unsafe { MmMapIoSpace(addr.into(), size as _, caching as _) };
if ptr.is_null() {
return Err(Error::INVALID_PARAMETER);
}
Ok(Self {
ptr,
size,
})
}
pub fn ptr(&self) -> *mut core::ffi::c_void { self.ptr }
pub fn size(&self) -> usize { self.size }
}
impl Drop for IoMapping {
fn drop(&mut self) {
use windows_kernel_sys::ntoskrnl::MmUnmapIoSpace;
unsafe {
MmUnmapIoSpace(self.ptr, self.size as _);
}
}
}
#[cfg(feature = "system")]
pub fn get_virtual_for_physical(addr: PhysicalAddress) -> *mut core::ffi::c_void {
use windows_kernel_sys::ntoskrnl::MmGetVirtualForPhysical;
let virt_addr = unsafe { MmGetVirtualForPhysical(addr.into()) };
virt_addr as _
}
pub fn read_memory(buffer: &mut [u8], source: CopyAddress) -> Result<usize, Error> {
use windows_kernel_sys::ntoskrnl::MmCopyMemory;
let (flags, copy_addr) = source.into();
let mut bytes = 0;
unsafe {
MmCopyMemory(
buffer.as_mut_ptr() as _,
copy_addr,
buffer.len() as _,
flags,
&mut bytes,
)
}
.into_result()?;
Ok(bytes as _)
}
#[cfg(feature = "system")]
pub fn write_memory(target: CopyAddress, buffer: &[u8]) -> Result<usize, Error> {
use windows_kernel_sys::ntoskrnl::MmCopyMemory;
let mut copy_addr: MM_COPY_ADDRESS = unsafe { core::mem::zeroed() };
let mut bytes = 0;
let target = match target {
CopyAddress::Virtual(addr) => addr,
CopyAddress::Physical(addr) => get_virtual_for_physical(addr),
};
copy_addr.__bindgen_anon_1.VirtualAddress = buffer.as_ptr() as _;
unsafe {
MmCopyMemory(
target as _,
copy_addr,
buffer.len() as _,
MM_COPY_MEMORY_VIRTUAL,
&mut bytes,
)
}
.into_result()?;
Ok(bytes as _)
}
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