Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "Highlights:

   - Intel xe enable Panthor Lake, started adding WildCat Lake

   - amdgpu has a bunch of reset improvments along with the usual IP
     updates

   - msm got VM_BIND support which is important for vulkan sparse memory

   - more drm_panic users

   - gpusvm common code to handle a bunch of core SVM work outside
     drivers.

  Detail summary:

  Changes outside drm subdirectory:
   - 'shrink_shmem_memory()' for better shmem/hibernate interaction
   - Rust support infrastructure:
      - make ETIMEDOUT available
      - add size constants up to SZ_2G
      - add DMA coherent allocation bindings
   - mtd driver for Intel GPU non-volatile storage
   - i2c designware quirk for Intel xe

  core:
   - atomic helpers: tune enable/disable sequences
   - add task info to wedge API
   - refactor EDID quirks
   - connector: move HDR sink to drm_display_info
   - fourcc: half-float and 32-bit float formats
   - mode_config: pass format info to simplify

  dma-buf:
   - heaps: Give CMA heap a stable name

  ci:
   - add device tree validation and kunit

  displayport:
   - change AUX DPCD access probe address
   - add quirk for DPCD probe
   - add panel replay definitions
   - backlight control helpers

  fbdev:
   - make CONFIG_FIRMWARE_EDID available on all arches

  fence:
   - fix UAF issues

  format-helper:
   - improve tests

  gpusvm:
   - introduce devmem only flag for allocation
   - add timeslicing support to GPU SVM

  ttm:
   - improve eviction

  sched:
   - tracing improvements
   - kunit improvements
   - memory leak fixes
   - reset handling improvements

  color mgmt:
   - add hardware gamma LUT handling helpers

  bridge:
   - add destroy hook
   - switch to reference counted drm_bridge allocations
   - tc358767: convert to devm_drm_bridge_alloc
   - improve CEC handling

  panel:
   - switch to reference counter drm_panel allocations
   - fwnode panel lookup
   - Huiling hl055fhv028c support
   - Raspberry Pi 7" 720x1280 support
   - edp: KDC KD116N3730A05, N160JCE-ELL CMN, N116BCJ-EAK
   - simple: AUO P238HAN01
   - st7701: Winstar wf40eswaa6mnn0
   - visionox: rm69299-shift
   - Renesas R61307, Renesas R69328 support
   - DJN HX83112B

  hdmi:
   - add CEC handling
   - YUV420 output support

  xe:
   - WildCat Lake support
   - Enable PanthorLake by default
   - mark BMG as SRIOV capable
   - update firmware recommendations
   - Expose media OA units
   - aux-bux support for non-volatile memory
   - MTD intel-dg driver for non-volatile memory
   - Expose fan control and voltage regulator in sysfs
   - restructure migration for multi-device
   - Restore GuC submit UAF fix
   - make GEM shrinker drm managed
   - SRIOV VF Post-migration recovery of GGTT nodes
   - W/A additions/reworks
   - Prefetch support for svm ranges
   - Don't allocate managed BO for each policy change
   - HWMON fixes for BMG
   - Create LRC BO without VM
   - PCI ID updates
   - make SLPC debugfs files optional
   - rework eviction rejection of bound external BOs
   - consolidate PAT programming logic for pre/post Xe2
   - init changes for flicker-free boot
   - Enable GuC Dynamic Inhibit Context switch

  i915:
   - drm_panic support for i915/xe
   - initial flip queue off by default for LNL/PNL
   - Wildcat Lake Display support
   - Support for DSC fractional link bpp
   - Support for simultaneous Panel Replay and Adaptive sync
   - Support for PTL+ double buffer LUT
   - initial PIPEDMC event handling
   - drm_panel_follower support
   - DPLL interface renames
   - allocate struct intel_display dynamically
   - flip queue preperation
   - abstract DRAM detection better
   - avoid GuC scheduling stalls
   - remove DG1 force probe requirement
   - fix MEI interrupt handler on RT kernels
   - use backlight control helpers for eDP
   - more shared display code refactoring

  amdgpu:
   - add userq slot to INFO ioctl
   - SR-IOV hibernation support
   - Suspend improvements
   - Backlight improvements
   - Use scaling for non-native eDP modes
   - cleaner shader updates for GC 9.x
   - Remove fence slab
   - SDMA fw checks for userq support
   - RAS updates
   - DMCUB updates
   - DP tunneling fixes
   - Display idle D3 support
   - Per queue reset improvements
   - initial smartmux support

  amdkfd:
   - enable KFD on loongarch
   - mtype fix for ext coherent system memory

  radeon:
   - CS validation additional GL extensions
   - drop console lock during suspend/resume
   - bump driver version

  msm:
   - VM BIND support
   - CI: infrastructure updates
   - UBWC single source of truth
   - decouple GPU and KMS support
   - DP: rework I/O accessors
   - DPU: SM8750 support
   - DSI: SM8750 support
   - GPU: X1-45 support and speedbin support for X1-85
   - MDSS: SM8750 support

  nova:
   - register! macro improvements
   - DMA object abstraction
   - VBIOS parser + fwsec lookup
   - sysmem flush page support
   - falcon: generic falcon boot code and HAL
   - FWSEC-FRTS: fb setup and load/execute

  ivpu:
   - Add Wildcat Lake support
   - Add turbo flag

  ast:
   - improve hardware generations implementation

  imx:
   - IMX8qxq Display Controller support

  lima:
   - Rockchip RK3528 GPU support

  nouveau:
   - fence handling cleanup

  panfrost:
   - MT8370 support
   - bo labeling
   - 64-bit register access

  qaic:
   - add RAS support

  rockchip:
   - convert inno_hdmi to a bridge

  rz-du:
   - add RZ/V2H(P) support
   - MIPI-DSI DCS support

  sitronix:
   - ST7567 support

  sun4i:
   - add H616 support

  tidss:
   - add TI AM62L support
   - AM65x OLDI bridge support

  bochs:
   - drm panic support

  vkms:
   - YUV and R* format support
   - use faux device

  vmwgfx:
   - fence improvements

  hyperv:
   - move out of simple
   - add drm_panic support"

* tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel: (1479 commits)
  drm/tidss: oldi: convert to devm_drm_bridge_alloc() API
  drm/tidss: encoder: convert to devm_drm_bridge_alloc()
  drm/amdgpu: move reset support type checks into the caller
  drm/amdgpu/sdma7: re-emit unprocessed state on ring reset
  drm/amdgpu/sdma6: re-emit unprocessed state on ring reset
  drm/amdgpu/sdma5.2: re-emit unprocessed state on ring reset
  drm/amdgpu/sdma5: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx12: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx11: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx10: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx9.4.3: re-emit unprocessed state on kcq reset
  drm/amdgpu/gfx9: re-emit unprocessed state on kcq reset
  drm/amdgpu: Add WARN_ON to the resource clear function
  drm/amd/pm: Use cached metrics data on SMUv13.0.6
  drm/amd/pm: Use cached data for min/max clocks
  gpu: nova-core: fix bounds check in PmuLookupTableEntry::new
  drm/amdgpu: Replace HQD terminology with slots naming
  drm/amdgpu: Add user queue instance count in HW IP info
  drm/amd/amdgpu: Add helper functions for isp buffers
  drm/amd/amdgpu: Initialize swnode for ISP MFD device
  ...

1 files changed, 108 insertions, 0 deletions

diff --git a/drivers/gpu/nova-core/firmware.rs b/drivers/gpu/nova-core/firmware.rs
index 4b8a38358a4f..0fdece652587 100644
--- a/drivers/gpu/nova-core/firmware.rs
+++ b/drivers/gpu/nova-core/firmware.rs
@@ -3,14 +3,20 @@
 //! Contains structures and functions dedicated to the parsing, building and patching of firmwares
 //! to be loaded into a given execution unit.
 
+use core::marker::PhantomData;
+
 use kernel::device;
 use kernel::firmware;
 use kernel::prelude::*;
 use kernel::str::CString;
 
+use crate::dma::DmaObject;
+use crate::falcon::FalconFirmware;
 use crate::gpu;
 use crate::gpu::Chipset;
 
+pub(crate) mod fwsec;
+
 pub(crate) const FIRMWARE_VERSION: &str = "535.113.01";
 
 /// Structure encapsulating the firmware blobs required for the GPU to operate.
@@ -41,6 +47,108 @@ impl Firmware {
     }
 }
 
+/// Structure used to describe some firmwares, notably FWSEC-FRTS.
+#[repr(C)]
+#[derive(Debug, Clone)]
+pub(crate) struct FalconUCodeDescV3 {
+    /// Header defined by `NV_BIT_FALCON_UCODE_DESC_HEADER_VDESC*` in OpenRM.
+    hdr: u32,
+    /// Stored size of the ucode after the header.
+    stored_size: u32,
+    /// Offset in `DMEM` at which the signature is expected to be found.
+    pub(crate) pkc_data_offset: u32,
+    /// Offset after the code segment at which the app headers are located.
+    pub(crate) interface_offset: u32,
+    /// Base address at which to load the code segment into `IMEM`.
+    pub(crate) imem_phys_base: u32,
+    /// Size in bytes of the code to copy into `IMEM`.
+    pub(crate) imem_load_size: u32,
+    /// Virtual `IMEM` address (i.e. `tag`) at which the code should start.
+    pub(crate) imem_virt_base: u32,
+    /// Base address at which to load the data segment into `DMEM`.
+    pub(crate) dmem_phys_base: u32,
+    /// Size in bytes of the data to copy into `DMEM`.
+    pub(crate) dmem_load_size: u32,
+    /// Mask of the falcon engines on which this firmware can run.
+    pub(crate) engine_id_mask: u16,
+    /// ID of the ucode used to infer a fuse register to validate the signature.
+    pub(crate) ucode_id: u8,
+    /// Number of signatures in this firmware.
+    pub(crate) signature_count: u8,
+    /// Versions of the signatures, used to infer a valid signature to use.
+    pub(crate) signature_versions: u16,
+    _reserved: u16,
+}
+
+impl FalconUCodeDescV3 {
+    /// Returns the size in bytes of the header.
+    pub(crate) fn size(&self) -> usize {
+        const HDR_SIZE_SHIFT: u32 = 16;
+        const HDR_SIZE_MASK: u32 = 0xffff0000;
+
+        ((self.hdr & HDR_SIZE_MASK) >> HDR_SIZE_SHIFT) as usize
+    }
+}
+
+/// Trait implemented by types defining the signed state of a firmware.
+trait SignedState {}
+
+/// Type indicating that the firmware must be signed before it can be used.
+struct Unsigned;
+impl SignedState for Unsigned {}
+
+/// Type indicating that the firmware is signed and ready to be loaded.
+struct Signed;
+impl SignedState for Signed {}
+
+/// A [`DmaObject`] containing a specific microcode ready to be loaded into a falcon.
+///
+/// This is module-local and meant for sub-modules to use internally.
+///
+/// After construction, a firmware is [`Unsigned`], and must generally be patched with a signature
+/// before it can be loaded (with an exception for development hardware). The
+/// [`Self::patch_signature`] and [`Self::no_patch_signature`] methods are used to transition the
+/// firmware to its [`Signed`] state.
+struct FirmwareDmaObject<F: FalconFirmware, S: SignedState>(DmaObject, PhantomData<(F, S)>);
+
+/// Trait for signatures to be patched directly into a given firmware.
+///
+/// This is module-local and meant for sub-modules to use internally.
+trait FirmwareSignature<F: FalconFirmware>: AsRef<[u8]> {}
+
+impl<F: FalconFirmware> FirmwareDmaObject<F, Unsigned> {
+    /// Patches the firmware at offset `sig_base_img` with `signature`.
+    fn patch_signature<S: FirmwareSignature<F>>(
+        mut self,
+        signature: &S,
+        sig_base_img: usize,
+    ) -> Result<FirmwareDmaObject<F, Signed>> {
+        let signature_bytes = signature.as_ref();
+        if sig_base_img + signature_bytes.len() > self.0.size() {
+            return Err(EINVAL);
+        }
+
+        // SAFETY: We are the only user of this object, so there cannot be any race.
+        let dst = unsafe { self.0.start_ptr_mut().add(sig_base_img) };
+
+        // SAFETY: `signature` and `dst` are valid, properly aligned, and do not overlap.
+        unsafe {
+            core::ptr::copy_nonoverlapping(signature_bytes.as_ptr(), dst, signature_bytes.len())
+        };
+
+        Ok(FirmwareDmaObject(self.0, PhantomData))
+    }
+
+    /// Mark the firmware as signed without patching it.
+    ///
+    /// This method is used to explicitly confirm that we do not need to sign the firmware, while
+    /// allowing us to continue as if it was. This is typically only needed for development
+    /// hardware.
+    fn no_patch_signature(self) -> FirmwareDmaObject<F, Signed> {
+        FirmwareDmaObject(self.0, PhantomData)
+    }
+}
+
 pub(crate) struct ModInfoBuilder<const N: usize>(firmware::ModInfoBuilder<N>);
 
 impl<const N: usize> ModInfoBuilder<N> {