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2690d07158
Export `acpi_of_match_device` function and use it to match the of device
table against ACPI PRP0001 in Rust.
This fixes id_info being None on ACPI PRP0001 devices.
Using `device_get_match_data` is not possible, because Rust stores an
index in the of device id instead of a data pointer. This was done this
way to provide a convenient and obvious API for drivers, which can be
evaluated in const context without the use of any unstable language
features.
Fixes: 7a718a1f26 ("rust: driver: implement `Adapter`")
Signed-off-by: Markus Probst <markus.probst@posteo.de>
Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> # ACPI
Link: https://patch.msgid.link/20260427-rust_acpi_prp0001-v6-1-6119b2a66183@posteo.de
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Non-trivial C macros cannot be used in Rust. Similarly, inlined C functions
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* cannot be called either. This file explicitly creates functions ("helpers")
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* that wrap those so that they can be called from Rust.
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*
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* Sorted alphabetically.
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*/
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#include <linux/compiler_types.h>
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#ifdef __BINDGEN__
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// Omit `inline` for bindgen as it ignores inline functions.
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#define __rust_helper
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#else
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// The helper functions are all inline functions.
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//
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// We use `__always_inline` here to bypass LLVM inlining checks, in case the
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// helpers are inlined directly into Rust CGUs.
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//
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// The LLVM inlining checks are false positives:
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// * LLVM doesn't want to inline functions compiled with
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// `-fno-delete-null-pointer-checks` with code compiled without.
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// The C CGUs all have this enabled and Rust CGUs don't. Inlining is okay
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// since this is one of the hardening features that does not change the ABI,
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// and we shouldn't have null pointer dereferences in these helpers.
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// * LLVM doesn't want to inline functions with different list of builtins. C
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// side has `-fno-builtin-wcslen`; `wcslen` is not a Rust builtin, so they
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// should be compatible, but LLVM does not perform inlining due to attributes
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// mismatch.
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// * clang and Rust doesn't have the exact target string. Clang generates
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// `+cmov,+cx8,+fxsr` but Rust doesn't enable them (in fact, Rust will
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// complain if `-Ctarget-feature=+cmov,+cx8,+fxsr` is used). x86-64 always
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// enable these features, so they are in fact the same target string, but
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// LLVM doesn't understand this and so inlining is inhibited. This can be
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// bypassed with `--ignore-tti-inline-compatible`, but this is a hidden
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// option.
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#define __rust_helper __always_inline
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#endif
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#include "acpi.c"
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#include "atomic.c"
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#include "atomic_ext.c"
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#include "auxiliary.c"
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#include "barrier.c"
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#include "binder.c"
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#include "bitmap.c"
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#include "bitops.c"
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#include "blk.c"
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#include "bug.c"
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#include "build_assert.c"
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#include "build_bug.c"
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#include "clk.c"
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#include "completion.c"
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#include "cpu.c"
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#include "cpufreq.c"
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#include "cpumask.c"
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#include "cred.c"
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#include "device.c"
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#include "dma.c"
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#include "dma-resv.c"
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#include "drm.c"
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#include "err.c"
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#include "irq.c"
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#include "fs.c"
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#include "gpu.c"
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#include "io.c"
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#include "jump_label.c"
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#include "kunit.c"
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#include "list.c"
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#include "maple_tree.c"
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#include "mm.c"
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#include "mutex.c"
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#include "of.c"
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#include "page.c"
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#include "pci.c"
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#include "pid_namespace.c"
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#include "platform.c"
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#include "poll.c"
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#include "processor.c"
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#include "property.c"
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#include "pwm.c"
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#include "rbtree.c"
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#include "rcu.c"
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#include "refcount.c"
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#include "regulator.c"
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#include "scatterlist.c"
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#include "security.c"
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#include "signal.c"
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#include "slab.c"
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#include "spinlock.c"
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#include "sync.c"
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#include "task.c"
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#include "time.c"
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#include "uaccess.c"
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#include "usb.c"
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#include "vmalloc.c"
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#include "wait.c"
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#include "workqueue.c"
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#include "xarray.c"
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