Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

2 files changed, 252 insertions, 0 deletions

diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h
new file mode 100644
index 000000000..82d2faf83
--- /dev/null
+++ b/rust/bindings/bindings_helper.h
@@ -0,0 +1,169 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Header that contains the code (mostly headers) for which Rust bindings
+ * will be automatically generated by `bindgen`.
+ *
+ * Sorted alphabetically.
+ */
+
+/*
+ * First, avoid forward references to `enum` types.
+ *
+ * This workarounds a `bindgen` issue with them:
+ * <https://github.com/rust-lang/rust-bindgen/issues/3179>.
+ *
+ * Without this, the generated Rust type may be the wrong one (`i32`) or
+ * the proper one (typically `c_uint`) depending on how the headers are
+ * included, which in turn may depend on the particular kernel configuration
+ * or the architecture.
+ *
+ * The alternative would be to use casts and likely an
+ * `#[allow(clippy::unnecessary_cast)]` in the Rust source files. Instead,
+ * this approach allows us to keep the correct code in the source files and
+ * simply remove this section when the issue is fixed upstream and we bump
+ * the minimum `bindgen` version.
+ *
+ * This workaround may not be possible in some cases, depending on how the C
+ * headers are set up.
+ */
+#include <linux/hrtimer_types.h>
+
+#include <linux/acpi.h>
+#include <linux/gpu_buddy.h>
+#include <drm/drm_device.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_file.h>
+#include <drm/drm_gem.h>
+#include <drm/drm_gem_shmem_helper.h>
+#include <drm/drm_gpuvm.h>
+#include <drm/drm_ioctl.h>
+#include <kunit/test.h>
+#include <linux/auxiliary_bus.h>
+#include <linux/bitmap.h>
+#include <linux/blk-mq.h>
+#include <linux/blk_types.h>
+#include <linux/blkdev.h>
+#include <linux/clk.h>
+#include <linux/completion.h>
+#include <linux/configfs.h>
+#include <linux/cpu.h>
+#include <linux/cpufreq.h>
+#include <linux/cpumask.h>
+#include <linux/cred.h>
+#include <linux/debugfs.h>
+#include <linux/device/faux.h>
+#include <linux/dma-direction.h>
+#include <linux/dma-mapping.h>
+#include <linux/dma-resv.h>
+#include <linux/errname.h>
+#include <linux/ethtool.h>
+#include <linux/fdtable.h>
+#include <linux/file.h>
+#include <linux/firmware.h>
+#include <linux/fwctl.h>
+#include <linux/fs.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/io-pgtable.h>
+#include <linux/ioport.h>
+#include <linux/iosys-map.h>
+#include <linux/jiffies.h>
+#include <linux/jump_label.h>
+#include <linux/mdio.h>
+#include <linux/mm.h>
+#include <linux/miscdevice.h>
+#include <linux/of_device.h>
+#include <linux/pci.h>
+#include <linux/phy.h>
+#include <linux/pid_namespace.h>
+#include <linux/platform_device.h>
+#include <linux/pm_opp.h>
+#include <linux/poll.h>
+#include <linux/property.h>
+#include <linux/pwm.h>
+#include <linux/random.h>
+#include <linux/refcount.h>
+#include <linux/regulator/consumer.h>
+#include <linux/sched.h>
+#include <linux/security.h>
+#include <linux/serdev.h>
+#include <linux/slab.h>
+#include <linux/sys_soc.h>
+#include <linux/task_work.h>
+#include <linux/tracepoint.h>
+#include <linux/usb.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+#include <linux/xarray.h>
+#include <trace/events/rust_sample.h>
+
+/*
+ * The driver-core Rust code needs to know about some C driver-core private
+ * structures.
+ */
+#include <../../drivers/base/base.h>
+
+#if defined(CONFIG_DRM_PANIC_SCREEN_QR_CODE)
+// Used by `#[export]` in `drivers/gpu/drm/drm_panic_qr.rs`.
+#include <drm/drm_panic.h>
+#endif
+
+/* `bindgen` gets confused at certain things. */
+const size_t RUST_CONST_HELPER_ARCH_SLAB_MINALIGN = ARCH_SLAB_MINALIGN;
+const size_t RUST_CONST_HELPER_ARCH_KMALLOC_MINALIGN = ARCH_KMALLOC_MINALIGN;
+const size_t RUST_CONST_HELPER_PAGE_SIZE = PAGE_SIZE;
+const gfp_t RUST_CONST_HELPER_GFP_ATOMIC = GFP_ATOMIC;
+const gfp_t RUST_CONST_HELPER_GFP_KERNEL = GFP_KERNEL;
+const gfp_t RUST_CONST_HELPER_GFP_KERNEL_ACCOUNT = GFP_KERNEL_ACCOUNT;
+const gfp_t RUST_CONST_HELPER_GFP_NOWAIT = GFP_NOWAIT;
+const gfp_t RUST_CONST_HELPER___GFP_ZERO = __GFP_ZERO;
+const gfp_t RUST_CONST_HELPER___GFP_HIGHMEM = ___GFP_HIGHMEM;
+const gfp_t RUST_CONST_HELPER___GFP_NOWARN = ___GFP_NOWARN;
+const blk_features_t RUST_CONST_HELPER_BLK_FEAT_ROTATIONAL = BLK_FEAT_ROTATIONAL;
+const fop_flags_t RUST_CONST_HELPER_FOP_UNSIGNED_OFFSET = FOP_UNSIGNED_OFFSET;
+
+const xa_mark_t RUST_CONST_HELPER_XA_PRESENT = XA_PRESENT;
+
+const gfp_t RUST_CONST_HELPER_XA_FLAGS_ALLOC = XA_FLAGS_ALLOC;
+const gfp_t RUST_CONST_HELPER_XA_FLAGS_ALLOC1 = XA_FLAGS_ALLOC1;
+
+const vm_flags_t RUST_CONST_HELPER_VM_MERGEABLE = VM_MERGEABLE;
+const vm_flags_t RUST_CONST_HELPER_VM_READ = VM_READ;
+const vm_flags_t RUST_CONST_HELPER_VM_WRITE = VM_WRITE;
+const vm_flags_t RUST_CONST_HELPER_VM_EXEC = VM_EXEC;
+const vm_flags_t RUST_CONST_HELPER_VM_SHARED = VM_SHARED;
+const vm_flags_t RUST_CONST_HELPER_VM_MAYREAD = VM_MAYREAD;
+const vm_flags_t RUST_CONST_HELPER_VM_MAYWRITE = VM_MAYWRITE;
+const vm_flags_t RUST_CONST_HELPER_VM_MAYEXEC = VM_MAYEXEC;
+const vm_flags_t RUST_CONST_HELPER_VM_MAYSHARE = VM_MAYEXEC;
+const vm_flags_t RUST_CONST_HELPER_VM_PFNMAP = VM_PFNMAP;
+const vm_flags_t RUST_CONST_HELPER_VM_IO = VM_IO;
+const vm_flags_t RUST_CONST_HELPER_VM_DONTCOPY = VM_DONTCOPY;
+const vm_flags_t RUST_CONST_HELPER_VM_DONTEXPAND = VM_DONTEXPAND;
+const vm_flags_t RUST_CONST_HELPER_VM_LOCKONFAULT = VM_LOCKONFAULT;
+const vm_flags_t RUST_CONST_HELPER_VM_ACCOUNT = VM_ACCOUNT;
+const vm_flags_t RUST_CONST_HELPER_VM_NORESERVE = VM_NORESERVE;
+const vm_flags_t RUST_CONST_HELPER_VM_HUGETLB = VM_HUGETLB;
+const vm_flags_t RUST_CONST_HELPER_VM_SYNC = VM_SYNC;
+const vm_flags_t RUST_CONST_HELPER_VM_ARCH_1 = VM_ARCH_1;
+const vm_flags_t RUST_CONST_HELPER_VM_WIPEONFORK = VM_WIPEONFORK;
+const vm_flags_t RUST_CONST_HELPER_VM_DONTDUMP = VM_DONTDUMP;
+const vm_flags_t RUST_CONST_HELPER_VM_SOFTDIRTY = VM_SOFTDIRTY;
+const vm_flags_t RUST_CONST_HELPER_VM_MIXEDMAP = VM_MIXEDMAP;
+const vm_flags_t RUST_CONST_HELPER_VM_HUGEPAGE = VM_HUGEPAGE;
+const vm_flags_t RUST_CONST_HELPER_VM_NOHUGEPAGE = VM_NOHUGEPAGE;
+
+#if IS_ENABLED(CONFIG_GPU_BUDDY)
+const unsigned long RUST_CONST_HELPER_GPU_BUDDY_RANGE_ALLOCATION = GPU_BUDDY_RANGE_ALLOCATION;
+const unsigned long RUST_CONST_HELPER_GPU_BUDDY_TOPDOWN_ALLOCATION = GPU_BUDDY_TOPDOWN_ALLOCATION;
+const unsigned long RUST_CONST_HELPER_GPU_BUDDY_CONTIGUOUS_ALLOCATION =
+								GPU_BUDDY_CONTIGUOUS_ALLOCATION;
+const unsigned long RUST_CONST_HELPER_GPU_BUDDY_CLEAR_ALLOCATION = GPU_BUDDY_CLEAR_ALLOCATION;
+const unsigned long RUST_CONST_HELPER_GPU_BUDDY_CLEARED = GPU_BUDDY_CLEARED;
+const unsigned long RUST_CONST_HELPER_GPU_BUDDY_TRIM_DISABLE = GPU_BUDDY_TRIM_DISABLE;
+#endif
+
+#if IS_ENABLED(CONFIG_ANDROID_BINDER_IPC_RUST)
+#include "../../drivers/android/binder/rust_binder.h"
+#include "../../drivers/android/binder/rust_binder_events.h"
+#endif
diff --git a/rust/bindings/lib.rs b/rust/bindings/lib.rs
new file mode 100644
index 000000000..812f8e5a0
--- /dev/null
+++ b/rust/bindings/lib.rs
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0
+
+//! Bindings.
+//!
+//! Imports the generated bindings by `bindgen`.
+//!
+//! This crate may not be directly used. If you need a kernel C API that is
+//! not ported or wrapped in the `kernel` crate, then do so first instead of
+//! using this crate.
+
+#![no_std]
+#![allow(
+    clippy::all,
+    missing_docs,
+    non_camel_case_types,
+    non_upper_case_globals,
+    non_snake_case,
+    improper_ctypes,
+    unreachable_pub,
+    unsafe_op_in_unsafe_fn
+)]
+#![feature(cfi_encoding)]
+
+#[allow(dead_code)]
+#[allow(clippy::cast_lossless)]
+#[allow(clippy::ptr_as_ptr)]
+#[allow(clippy::ref_as_ptr)]
+#[allow(clippy::undocumented_unsafe_blocks)]
+#[cfg_attr(CONFIG_RUSTC_HAS_UNNECESSARY_TRANSMUTES, allow(unnecessary_transmutes))]
+#[cfg_attr(
+    CONFIG_RUSTC_HAS_SUSPICIOUS_RUNTIME_SYMBOL_DEFINITIONS,
+    allow(suspicious_runtime_symbol_definitions)
+)]
+mod bindings_raw {
+    use pin_init::{MaybeZeroable, Zeroable};
+
+    // Manual definition for blocklisted types.
+    type __kernel_size_t = usize;
+    type __kernel_ssize_t = isize;
+    type __kernel_ptrdiff_t = isize;
+
+    // `bindgen` doesn't automatically do this, see
+    // <https://github.com/rust-lang/rust-bindgen/issues/3196>
+    //
+    // SAFETY: `__BindgenBitfieldUnit<Storage>` is a newtype around `Storage`.
+    unsafe impl<Storage> Zeroable for __BindgenBitfieldUnit<Storage> where Storage: Zeroable {}
+
+    // Use glob import here to expose all helpers.
+    // Symbols defined within the module will take precedence to the glob import.
+    pub use super::bindings_helper::*;
+    include!(concat!(
+        env!("OBJTREE"),
+        "/rust/bindings/bindings_generated.rs"
+    ));
+}
+
+// When both a directly exposed symbol and a helper exists for the same function,
+// the directly exposed symbol is preferred and the helper becomes dead code, so
+// ignore the warning here.
+#[allow(dead_code)]
+mod bindings_helper {
+    // Import the generated bindings for types.
+    use super::bindings_raw::*;
+    include!(concat!(
+        env!("OBJTREE"),
+        "/rust/bindings/bindings_helpers_generated.rs"
+    ));
+}
+
+pub use bindings_raw::*;
+
+pub const compat_ptr_ioctl: Option<
+    unsafe extern "C" fn(*mut file, ffi::c_uint, ffi::c_ulong) -> ffi::c_long,
+> = {
+    #[cfg(CONFIG_COMPAT)]
+    {
+        Some(bindings_raw::compat_ptr_ioctl)
+    }
+    #[cfg(not(CONFIG_COMPAT))]
+    {
+        None
+    }
+};