zircon/kernel/vm/physmap.rs

// Copyright 2026 The Fuchsia Authors
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT

use crate::kernel::types::{PAddr, VAddr};
use physmap_bindings as bindings;

/// Converts a physical address to a virtual address in the kernel physmap.
pub fn paddr_to_physmap(paddr: PAddr) -> VAddr {
    // SAFETY: FFI call passing physical address to get virtual address in physmap.
    VAddr(unsafe { bindings::cpp_paddr_to_physmap(paddr.0) })
}

/// Converts a virtual address in the kernel physmap to a physical address.
pub fn physmap_to_paddr(vaddr: VAddr) -> PAddr {
    // SAFETY: FFI call passing virtual address in physmap to get physical address.
    PAddr(unsafe { bindings::cpp_physmap_to_paddr(vaddr.0) })
}