From f146c7bc85a51f95c05e0f8173d484eb301ece78 Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Thu, 13 Aug 2026 18:52:04 +0200 Subject: PCI: Add pci_irq_type() to query the allocated interrupt type Add a helper that returns PCI_IRQ_MSIX, PCI_IRQ_MSI, or PCI_IRQ_INTX based on the interrupt type the PCI core selected after pci_alloc_irq_vectors(). Several drivers already open-code this check against pdev->msix_enabled and pdev->msi_enabled, or even open code this helper [1]. A common helper avoids the duplication and keeps drivers from accessing the bitfield directly (see also [2]). Acked-by: Bjorn Helgaas Tested-by: John Hubbard Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1] Inspired-by: John Hubbard Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2] Reviewed-by: Gary Guo Link: https://patch.msgid.link/20260813165234.620555-5-dakr@kernel.org [ Add missing pci_irq_type() stub for CONFIG_PCI=n. ] Signed-off-by: Danilo Krummrich --- rust/zerocopy/src/deprecated.rs | 281 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 281 insertions(+) create mode 100644 rust/zerocopy/src/deprecated.rs (limited to 'rust/zerocopy/src/deprecated.rs') diff --git a/rust/zerocopy/src/deprecated.rs b/rust/zerocopy/src/deprecated.rs new file mode 100644 index 000000000..59ddd35c7 --- /dev/null +++ b/rust/zerocopy/src/deprecated.rs @@ -0,0 +1,281 @@ +// SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT +// +// Copyright 2024 The Fuchsia Authors +// +// Licensed under the 2-Clause BSD License , Apache License, Version 2.0 +// , or the MIT +// license , at your option. +// This file may not be copied, modified, or distributed except according to +// those terms. + +//! Deprecated items. These are kept separate so that they don't clutter up +//! other modules. + +use super::*; + +impl Ref +where + B: ByteSlice, + T: KnownLayout + Immutable + ?Sized, +{ + #[deprecated(since = "0.8.0", note = "renamed to `Ref::from_bytes`")] + #[doc(hidden)] + #[must_use = "has no side effects"] + #[inline(always)] + pub fn new(bytes: B) -> Option> { + Self::from_bytes(bytes).ok() + } +} + +impl Ref +where + B: SplitByteSlice, + T: KnownLayout + Immutable + ?Sized, +{ + #[deprecated(since = "0.8.0", note = "renamed to `Ref::from_prefix`")] + #[doc(hidden)] + #[must_use = "has no side effects"] + #[inline(always)] + pub fn new_from_prefix(bytes: B) -> Option<(Ref, B)> { + Self::from_prefix(bytes).ok() + } +} + +impl Ref +where + B: SplitByteSlice, + T: KnownLayout + Immutable + ?Sized, +{ + #[deprecated(since = "0.8.0", note = "renamed to `Ref::from_suffix`")] + #[doc(hidden)] + #[must_use = "has no side effects"] + #[inline(always)] + pub fn new_from_suffix(bytes: B) -> Option<(B, Ref)> { + Self::from_suffix(bytes).ok() + } +} + +impl Ref +where + B: ByteSlice, + T: Unaligned + KnownLayout + Immutable + ?Sized, +{ + #[deprecated( + since = "0.8.0", + note = "use `Ref::from_bytes`; for `T: Unaligned`, the returned `CastError` implements `Into`" + )] + #[doc(hidden)] + #[must_use = "has no side effects"] + #[inline(always)] + pub fn new_unaligned(bytes: B) -> Option> { + Self::from_bytes(bytes).ok() + } +} + +impl Ref +where + B: SplitByteSlice, + T: Unaligned + KnownLayout + Immutable + ?Sized, +{ + #[deprecated( + since = "0.8.0", + note = "use `Ref::from_prefix`; for `T: Unaligned`, the returned `CastError` implements `Into`" + )] + #[doc(hidden)] + #[must_use = "has no side effects"] + #[inline(always)] + pub fn new_unaligned_from_prefix(bytes: B) -> Option<(Ref, B)> { + Self::from_prefix(bytes).ok() + } +} + +impl Ref +where + B: SplitByteSlice, + T: Unaligned + KnownLayout + Immutable + ?Sized, +{ + #[deprecated( + since = "0.8.0", + note = "use `Ref::from_suffix`; for `T: Unaligned`, the returned `CastError` implements `Into`" + )] + #[doc(hidden)] + #[must_use = "has no side effects"] + #[inline(always)] + pub fn new_unaligned_from_suffix(bytes: B) -> Option<(B, Ref)> { + Self::from_suffix(bytes).ok() + } +} + +impl Ref +where + B: ByteSlice, + T: Immutable, +{ + #[deprecated(since = "0.8.0", note = "`Ref::from_bytes` now supports slices")] + #[doc(hidden)] + #[inline(always)] + pub fn new_slice(bytes: B) -> Option> { + Self::from_bytes(bytes).ok() + } +} + +impl Ref +where + B: ByteSlice, + T: Unaligned + Immutable, +{ + #[deprecated( + since = "0.8.0", + note = "`Ref::from_bytes` now supports slices; for `T: Unaligned`, the returned `CastError` implements `Into`" + )] + #[doc(hidden)] + #[inline(always)] + pub fn new_slice_unaligned(bytes: B) -> Option> { + Ref::from_bytes(bytes).ok() + } +} + +impl<'a, B, T> Ref +where + B: 'a + IntoByteSlice<'a>, + T: FromBytes + Immutable, +{ + #[deprecated(since = "0.8.0", note = "`Ref::into_ref` now supports slices")] + #[doc(hidden)] + #[inline(always)] + pub fn into_slice(self) -> &'a [T] { + Ref::into_ref(self) + } +} + +impl<'a, B, T> Ref +where + B: 'a + IntoByteSliceMut<'a>, + T: FromBytes + IntoBytes + Immutable, +{ + #[deprecated(since = "0.8.0", note = "`Ref::into_mut` now supports slices")] + #[doc(hidden)] + #[inline(always)] + pub fn into_mut_slice(self) -> &'a mut [T] { + Ref::into_mut(self) + } +} + +impl Ref +where + B: SplitByteSlice, + T: Immutable, +{ + #[deprecated(since = "0.8.0", note = "replaced by `Ref::from_prefix_with_elems`")] + #[must_use = "has no side effects"] + #[doc(hidden)] + #[inline(always)] + pub fn new_slice_from_prefix(bytes: B, count: usize) -> Option<(Ref, B)> { + Ref::from_prefix_with_elems(bytes, count).ok() + } + + #[deprecated(since = "0.8.0", note = "replaced by `Ref::from_suffix_with_elems`")] + #[must_use = "has no side effects"] + #[doc(hidden)] + #[inline(always)] + pub fn new_slice_from_suffix(bytes: B, count: usize) -> Option<(B, Ref)> { + Ref::from_suffix_with_elems(bytes, count).ok() + } +} + +impl Ref +where + B: SplitByteSlice, + T: Unaligned + Immutable, +{ + #[deprecated( + since = "0.8.0", + note = "use `Ref::from_prefix_with_elems`; for `T: Unaligned`, the returned `CastError` implements `Into`" + )] + #[doc(hidden)] + #[must_use = "has no side effects"] + #[inline(always)] + pub fn new_slice_unaligned_from_prefix(bytes: B, count: usize) -> Option<(Ref, B)> { + Ref::from_prefix_with_elems(bytes, count).ok() + } + + #[deprecated( + since = "0.8.0", + note = "use `Ref::from_suffix_with_elems`; for `T: Unaligned`, the returned `CastError` implements `Into`" + )] + #[doc(hidden)] + #[must_use = "has no side effects"] + #[inline(always)] + pub fn new_slice_unaligned_from_suffix(bytes: B, count: usize) -> Option<(B, Ref)> { + Ref::from_suffix_with_elems(bytes, count).ok() + } +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + #[allow(deprecated)] + fn test_deprecated_ref_methods() { + let bytes = &[0u8; 1][..]; + let bytes_slice = &[0u8; 4][..]; + + let r: Option> = Ref::new(bytes); + assert!(r.is_some()); + + let r: Option<(Ref<&[u8], u8>, &[u8])> = Ref::new_from_prefix(bytes); + assert!(r.is_some()); + + let r: Option<(&[u8], Ref<&[u8], u8>)> = Ref::new_from_suffix(bytes); + assert!(r.is_some()); + + let r: Option> = Ref::new_unaligned(bytes); + assert!(r.is_some()); + + let r: Option<(Ref<&[u8], u8>, &[u8])> = Ref::new_unaligned_from_prefix(bytes); + assert!(r.is_some()); + + let r: Option<(&[u8], Ref<&[u8], u8>)> = Ref::new_unaligned_from_suffix(bytes); + assert!(r.is_some()); + + let r: Option> = Ref::new_slice(bytes_slice); + assert!(r.is_some()); + + let r: Option> = Ref::new_slice_unaligned(bytes_slice); + assert!(r.is_some()); + + let r: Option<(Ref<&[u8], [u8]>, &[u8])> = Ref::new_slice_from_prefix(bytes_slice, 1); + assert!(r.is_some()); + + let r: Option<(&[u8], Ref<&[u8], [u8]>)> = Ref::new_slice_from_suffix(bytes_slice, 1); + assert!(r.is_some()); + + let r: Option<(Ref<&[u8], [u8]>, &[u8])> = + Ref::new_slice_unaligned_from_prefix(bytes_slice, 1); + assert!(r.is_some()); + + let r: Option<(&[u8], Ref<&[u8], [u8]>)> = + Ref::new_slice_unaligned_from_suffix(bytes_slice, 1); + assert!(r.is_some()); + } + + #[test] + #[allow(deprecated)] + fn test_deprecated_into_slice() { + let bytes = &[0u8; 4][..]; + let r: Ref<&[u8], [u8]> = Ref::from_bytes(bytes).unwrap(); + let slice: &[u8] = r.into_slice(); + assert_eq!(slice.len(), 4); + } + + #[test] + #[allow(deprecated)] + fn test_deprecated_into_mut_slice() { + let mut bytes = [0u8; 4]; + let r: Ref<&mut [u8], [u8]> = Ref::from_bytes(&mut bytes[..]).unwrap(); + let slice: &mut [u8] = r.into_mut_slice(); + assert_eq!(slice.len(), 4); + } +} -- cgit v1.3.1