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charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1756291446876124100 From: Marc-Andr=C3=A9 Lureau Signed-off-by: Marc-Andr=C3=A9 Lureau --- MAINTAINERS | 1 + rust/chardev/wrapper.h | 28 ++++++++++++ rust/qemu-api/wrapper.h | 2 - rust/Cargo.lock | 14 ++++++ rust/chardev/Cargo.toml | 24 ++++++++++ rust/chardev/build.rs | 1 + rust/chardev/meson.build | 54 +++++++++++++++++++++++ rust/chardev/src/bindings.rs | 36 +++++++++++++++ rust/{qemu-api =3D> chardev}/src/chardev.rs | 0 rust/chardev/src/lib.rs | 6 +++ rust/hw/char/pl011/Cargo.toml | 1 + rust/hw/char/pl011/meson.build | 1 + rust/hw/char/pl011/src/device.rs | 2 +- rust/meson.build | 1 + rust/qemu-api/Cargo.toml | 1 + rust/qemu-api/meson.build | 7 ++- rust/qemu-api/src/bindings.rs | 9 +--- rust/qemu-api/src/lib.rs | 1 - rust/qemu-api/src/qdev.rs | 2 +- 19 files changed, 174 insertions(+), 17 deletions(-) create mode 100644 rust/chardev/wrapper.h create mode 100644 rust/chardev/Cargo.toml create mode 120000 rust/chardev/build.rs create mode 100644 rust/chardev/meson.build create mode 100644 rust/chardev/src/bindings.rs rename rust/{qemu-api =3D> chardev}/src/chardev.rs (100%) create mode 100644 rust/chardev/src/lib.rs diff --git a/MAINTAINERS b/MAINTAINERS index 8054913502..4ab89b208c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3511,6 +3511,7 @@ Rust M: Manos Pitsidianakis S: Maintained F: rust/bql/ +F: rust/chardev/ F: rust/common/ F: rust/migration/ F: rust/qemu-api diff --git a/rust/chardev/wrapper.h b/rust/chardev/wrapper.h new file mode 100644 index 0000000000..65ede6ea6d --- /dev/null +++ b/rust/chardev/wrapper.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +/* + * This header file is meant to be used as input to the `bindgen` applicat= ion + * in order to generate C FFI compatible Rust bindings. + */ + +#ifndef __CLANG_STDATOMIC_H +#define __CLANG_STDATOMIC_H +/* + * Fix potential missing stdatomic.h error in case bindgen does not insert= the + * correct libclang header paths on its own. We do not use stdatomic.h sym= bols + * in QEMU code, so it's fine to declare dummy types instead. + */ +typedef enum memory_order { + memory_order_relaxed, + memory_order_consume, + memory_order_acquire, + memory_order_release, + memory_order_acq_rel, + memory_order_seq_cst, +} memory_order; +#endif /* __CLANG_STDATOMIC_H */ + +#include "qemu/osdep.h" + +#include "chardev/char-fe.h" +#include "chardev/char-serial.h" diff --git a/rust/qemu-api/wrapper.h b/rust/qemu-api/wrapper.h index b99df9f568..07dbc9987a 100644 --- a/rust/qemu-api/wrapper.h +++ b/rust/qemu-api/wrapper.h @@ -52,13 +52,11 @@ typedef enum memory_order { #include "system/system.h" #include "hw/sysbus.h" #include "system/memory.h" -#include "chardev/char-fe.h" #include "hw/clock.h" #include "hw/qdev-clock.h" #include "hw/qdev-properties.h" #include "hw/qdev-properties-system.h" #include "hw/irq.h" -#include "chardev/char-serial.h" #include "exec/memattrs.h" #include "system/address-spaces.h" #include "hw/char/pl011.h" diff --git a/rust/Cargo.lock b/rust/Cargo.lock index 1dbaad3343..8b52843e6c 100644 --- a/rust/Cargo.lock +++ b/rust/Cargo.lock @@ -51,6 +51,18 @@ dependencies =3D [ "migration", ] =20 +[[package]] +name =3D "chardev" +version =3D "0.1.0" +dependencies =3D [ + "bql", + "common", + "migration", + "qemu_api_macros", + "qom", + "util", +] + [[package]] name =3D "common" version =3D "0.1.0" @@ -118,6 +130,7 @@ dependencies =3D [ "bilge-impl", "bits", "bql", + "chardev", "common", "migration", "qemu_api", @@ -164,6 +177,7 @@ version =3D "0.1.0" dependencies =3D [ "anyhow", "bql", + "chardev", "common", "foreign", "libc", diff --git a/rust/chardev/Cargo.toml b/rust/chardev/Cargo.toml new file mode 100644 index 0000000000..7df9c677fc --- /dev/null +++ b/rust/chardev/Cargo.toml @@ -0,0 +1,24 @@ +[package] +name =3D "chardev" +version =3D "0.1.0" +description =3D "Rust bindings for QEMU/chardev" +resolver =3D "2" +publish =3D false + +authors.workspace =3D true +edition.workspace =3D true +homepage.workspace =3D true +license.workspace =3D true +repository.workspace =3D true +rust-version.workspace =3D true + +[dependencies] +common =3D { path =3D "../common" } +bql =3D { path =3D "../bql" } +migration =3D { path =3D "../migration" } +qom =3D { path =3D "../qom" } +util =3D { path =3D "../util" } +qemu_api_macros =3D { path =3D "../qemu-api-macros" } + +[lints] +workspace =3D true diff --git a/rust/chardev/build.rs b/rust/chardev/build.rs new file mode 120000 index 0000000000..71a3167885 --- /dev/null +++ b/rust/chardev/build.rs @@ -0,0 +1 @@ +../util/build.rs \ No newline at end of file diff --git a/rust/chardev/meson.build b/rust/chardev/meson.build new file mode 100644 index 0000000000..918e0a5224 --- /dev/null +++ b/rust/chardev/meson.build @@ -0,0 +1,54 @@ +_chardev_cfg =3D run_command(rustc_args, + '--config-headers', config_host_h, '--features', files('Cargo.toml'), + capture: true, check: true).stdout().strip().splitlines() + +c_enums =3D [ + 'QEMUChrEvent', +] +_chardev_bindgen_args =3D [] +foreach enum : c_enums + _chardev_bindgen_args +=3D ['--rustified-enum', enum] +endforeach + +# TODO: Remove this comment when the clang/libclang mismatch issue is solv= ed. +# +# Rust bindings generation with `bindgen` might fail in some cases where t= he +# detected `libclang` does not match the expected `clang` version/target. = In +# this case you must pass the path to `clang` and `libclang` to your build +# command invocation using the environment variables CLANG_PATH and +# LIBCLANG_PATH +_chardev_bindings_inc_rs =3D rust.bindgen( + input: 'wrapper.h', + dependencies: common_ss.all_dependencies(), + output: 'bindings.inc.rs', + include_directories: bindings_incdir, + bindgen_version: ['>=3D0.60.0'], + args: bindgen_args_common + _chardev_bindgen_args, +) + +_chardev_rs =3D static_library( + 'chardev', + structured_sources( + [ + 'src/lib.rs', + 'src/bindings.rs', + 'src/chardev.rs', + ], + {'.': _chardev_bindings_inc_rs} + ), + override_options: ['rust_std=3D2021', 'build.rust_std=3D2021'], + rust_abi: 'rust', + rust_args: _chardev_cfg, + dependencies: [qemuutil_rs, common_rs, bql_rs, migration_rs, qemu_api_ma= cros, qom_rs, util_rs, chardev], +) + +chardev_rs =3D declare_dependency(link_with: [_chardev_rs], dependencies: = [qemu_api_macros, chardev]) + +# Doctests are essentially integration tests, so they need the same depend= encies. +# Note that running them requires the object files for C code, so place th= em +# in a separate suite that is run by the "build" CI jobs rather than "chec= k". +rust.doctest('rust-chardev-rs-doctests', + _chardev_rs, + protocol: 'rust', + dependencies: chardev_rs, + suite: ['doc', 'rust']) diff --git a/rust/chardev/src/bindings.rs b/rust/chardev/src/bindings.rs new file mode 100644 index 0000000000..2d98026d62 --- /dev/null +++ b/rust/chardev/src/bindings.rs @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +#![allow( + dead_code, + improper_ctypes_definitions, + improper_ctypes, + non_camel_case_types, + non_snake_case, + non_upper_case_globals, + unnecessary_transmutes, + unsafe_op_in_unsafe_fn, + clippy::pedantic, + clippy::restriction, + clippy::style, + clippy::missing_const_for_fn, + clippy::ptr_offset_with_cast, + clippy::useless_transmute, + clippy::missing_safety_doc, + clippy::too_many_arguments +)] + +use common::Zeroable; + +#[cfg(MESON)] +include!("bindings.inc.rs"); + +#[cfg(not(MESON))] +include!(concat!(env!("OUT_DIR"), "/bindings.inc.rs")); + +// SAFETY: these are implemented in C; the bindings need to assert that the +// BQL is taken, either directly or via `BqlCell` and `BqlRefCell`. +// When bindings for character devices are introduced, this can be +// moved to the Opaque<> wrapper in src/chardev.rs. +unsafe impl Send for CharBackend {} +unsafe impl Sync for CharBackend {} + +unsafe impl Zeroable for CharBackend {} diff --git a/rust/qemu-api/src/chardev.rs b/rust/chardev/src/chardev.rs similarity index 100% rename from rust/qemu-api/src/chardev.rs rename to rust/chardev/src/chardev.rs diff --git a/rust/chardev/src/lib.rs b/rust/chardev/src/lib.rs new file mode 100644 index 0000000000..2e549f99d9 --- /dev/null +++ b/rust/chardev/src/lib.rs @@ -0,0 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +pub mod bindings; + +mod chardev; +pub use chardev::*; diff --git a/rust/hw/char/pl011/Cargo.toml b/rust/hw/char/pl011/Cargo.toml index da89f78727..f7ad5f8e08 100644 --- a/rust/hw/char/pl011/Cargo.toml +++ b/rust/hw/char/pl011/Cargo.toml @@ -21,6 +21,7 @@ util =3D { path =3D "../../../util" } bql =3D { path =3D "../../../bql" } migration =3D { path =3D "../../../migration" } qom =3D { path =3D "../../../qom" } +chardev =3D { path =3D "../../../chardev" } qemu_api =3D { path =3D "../../../qemu-api" } qemu_api_macros =3D { path =3D "../../../qemu-api-macros" } =20 diff --git a/rust/hw/char/pl011/meson.build b/rust/hw/char/pl011/meson.build index cd855408a5..552ccc0d60 100644 --- a/rust/hw/char/pl011/meson.build +++ b/rust/hw/char/pl011/meson.build @@ -14,6 +14,7 @@ _libpl011_rs =3D static_library( qemu_api, qemu_api_macros, qom_rs, + chardev_rs, ], ) =20 diff --git a/rust/hw/char/pl011/src/device.rs b/rust/hw/char/pl011/src/devi= ce.rs index f595b950bf..8aaad6481c 100644 --- a/rust/hw/char/pl011/src/device.rs +++ b/rust/hw/char/pl011/src/device.rs @@ -9,6 +9,7 @@ }; =20 use bql::BqlRefCell; +use chardev::{CharBackend, Chardev, Event}; use common::{static_assert, uninit_field_mut, Zeroable}; use migration::{ impl_vmstate_forward, vmstate_fields, vmstate_of, vmstate_struct, vmst= ate_subsections, @@ -16,7 +17,6 @@ }; use qemu_api::{ bindings::{qdev_prop_bool, qdev_prop_chr}, - chardev::{CharBackend, Chardev, Event}, irq::{IRQState, InterruptSource}, memory::{hwaddr, MemoryRegion, MemoryRegionOps, MemoryRegionOpsBuilder= }, prelude::*, diff --git a/rust/meson.build b/rust/meson.build index 043603d416..4d9e291223 100644 --- a/rust/meson.build +++ b/rust/meson.build @@ -29,6 +29,7 @@ subdir('util') subdir('migration') subdir('bql') subdir('qom') +subdir('chardev') subdir('qemu-api') =20 subdir('hw') diff --git a/rust/qemu-api/Cargo.toml b/rust/qemu-api/Cargo.toml index 1499e0866d..b5cc2b7d41 100644 --- a/rust/qemu-api/Cargo.toml +++ b/rust/qemu-api/Cargo.toml @@ -15,6 +15,7 @@ rust-version.workspace =3D true =20 [dependencies] common =3D { path =3D "../common" } +chardev =3D { path =3D "../chardev" } migration =3D { path =3D "../migration" } util =3D { path =3D "../util" } bql =3D { path =3D "../bql" } diff --git a/rust/qemu-api/meson.build b/rust/qemu-api/meson.build index c5038aa5bd..e3af8f86c1 100644 --- a/rust/qemu-api/meson.build +++ b/rust/qemu-api/meson.build @@ -7,7 +7,6 @@ c_enums =3D [ 'GpioPolarity', 'MachineInitPhase', 'MemoryDeviceInfoKind', - 'QEMUChrEvent', 'ResetType', 'device_endian', ] @@ -23,9 +22,10 @@ foreach enum : c_bitfields endforeach =20 blocked_type =3D [ + 'Chardev', + 'Error', 'ObjectClass', 'VMStateDescription', - 'Error', ] foreach type: blocked_type _qemu_api_bindgen_args +=3D ['--blocklist-type', type] @@ -53,7 +53,6 @@ _qemu_api_rs =3D static_library( [ 'src/lib.rs', 'src/bindings.rs', - 'src/chardev.rs', 'src/irq.rs', 'src/memory.rs', 'src/prelude.rs', @@ -65,7 +64,7 @@ _qemu_api_rs =3D static_library( override_options: ['rust_std=3D2021', 'build.rust_std=3D2021'], rust_abi: 'rust', rust_args: _qemu_api_cfg, - dependencies: [anyhow_rs, common_rs, foreign_rs, libc_rs, qemu_api_macro= s, qemuutil_rs, util_rs, migration_rs, bql_rs, qom_rs, + dependencies: [anyhow_rs, common_rs, chardev_rs, foreign_rs, libc_rs, qe= mu_api_macros, qemuutil_rs, util_rs, migration_rs, bql_rs, qom_rs, qom, hwcore, chardev, migration], ) =20 diff --git a/rust/qemu-api/src/bindings.rs b/rust/qemu-api/src/bindings.rs index 525f136ae2..526bcf8e31 100644 --- a/rust/qemu-api/src/bindings.rs +++ b/rust/qemu-api/src/bindings.rs @@ -20,6 +20,7 @@ =20 //! `bindgen`-generated declarations. =20 +use chardev::bindings::Chardev; use common::Zeroable; use migration::bindings::VMStateDescription; use qom::bindings::ObjectClass; @@ -31,13 +32,6 @@ #[cfg(not(MESON))] include!(concat!(env!("OUT_DIR"), "/bindings.inc.rs")); =20 -// SAFETY: these are implemented in C; the bindings need to assert that the -// BQL is taken, either directly or via `BqlCell` and `BqlRefCell`. -// When bindings for character devices are introduced, this can be -// moved to the Opaque<> wrapper in src/chardev.rs. -unsafe impl Send for CharBackend {} -unsafe impl Sync for CharBackend {} - // SAFETY: this is a pure data struct unsafe impl Send for CoalescedMemoryRange {} unsafe impl Sync for CoalescedMemoryRange {} @@ -59,4 +53,3 @@ unsafe impl Zeroable for crate::bindings::MemoryRegionOps= __bindgen_ty_1 {} unsafe impl Zeroable for crate::bindings::MemoryRegionOps__bindgen_ty_2 {} unsafe impl Zeroable for crate::bindings::MemoryRegionOps {} unsafe impl Zeroable for crate::bindings::MemTxAttrs {} -unsafe impl Zeroable for crate::bindings::CharBackend {} diff --git a/rust/qemu-api/src/lib.rs b/rust/qemu-api/src/lib.rs index f9551c13a5..712116b585 100644 --- a/rust/qemu-api/src/lib.rs +++ b/rust/qemu-api/src/lib.rs @@ -13,7 +13,6 @@ #[rustfmt::skip] pub mod prelude; =20 -pub mod chardev; pub mod irq; pub mod memory; pub mod qdev; diff --git a/rust/qemu-api/src/qdev.rs b/rust/qemu-api/src/qdev.rs index 91c4edf5a3..3010a9fba9 100644 --- a/rust/qemu-api/src/qdev.rs +++ b/rust/qemu-api/src/qdev.rs @@ -10,6 +10,7 @@ }; =20 pub use bindings::{ClockEvent, DeviceClass, Property, ResetType}; +use chardev::Chardev; use common::{callbacks::FnCall, Opaque}; use migration::vmstate::VMStateDescription; use qom::{prelude::*, ObjectClass, ObjectImpl, Owned, ParentInit}; @@ -17,7 +18,6 @@ =20 use crate::{ bindings::{self, qdev_init_gpio_in, qdev_init_gpio_out, ResettableClas= s}, - chardev::Chardev, irq::InterruptSource, }; =20 --=20 2.50.1