kernel/git/next/linux-next.git/drivers/accel/amdxdna/Makefile, branch master

accel/amdxdna: Add AIE4 VF hardware context create and destroy

2026-05-07T21:07:34+00:00

Implement hardware context creation and destruction for AIE4 VF devices. Co-developed-by: Hayden Laccabue Signed-off-by: Hayden Laccabue Signed-off-by: David Zhang Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20260505160936.3917732-4-lizhi.hou@amd.com

accel/amdxdna: Add carveout memory support for non-IOMMU systems

2026-05-05T15:27:04+00:00

Add support for allocating buffers from reserved carveout memory when IOMMU is not available. This is useful during debugging or bring-up. In this configuration, the device uses physical addresses and does not support scatter-gather lists, requiring physically contiguous buffers. Implement carveout-backed allocation and integrate it into buffer management to support operation in physical address mode. Signed-off-by: Max Zhen Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20260427170949.2666601-1-lizhi.hou@amd.com

accel/amdxdna: Create common SMU interfaces for AIE2 and AIE4

2026-04-01T17:44:51+00:00

AIE2 and AIE4 use similar interfaces to the SMU (System Management Unit). Move the SMU implementation into aie_smu.c and provide common interfaces for both platforms. This allows AIE2 and AIE4 to share the same implementation and reduces code duplication. Co-developed-by: Hayden Laccabue Signed-off-by: Hayden Laccabue Signed-off-by: David Zhang Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20260330163705.3153647-6-lizhi.hou@amd.com

accel/amdxdna: Create common PSP interfaces for AIE2 and AIE4

2026-04-01T17:12:02+00:00

The AIE2 and AIE4 use the similar interface to PSP (Platform Security Processor). Move the PSP implementation into aie_psp.c so both platforms use the same path and future AIE4 PSP work can build on it. Co-developed-by: Hayden Laccabue Signed-off-by: Hayden Laccabue Signed-off-by: David Zhang Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20260330163705.3153647-4-lizhi.hou@amd.com

accel/amdxdna: Add basic support for AIE4 devices

2026-04-01T17:11:53+00:00

Add initial support for AIE4 devices (PCI device IDs 0x17F2 and 0x1B0B), including: Device initialization Basic mailbox communication SR-IOV enablement This lays the groundwork for full AIE4 support. Co-developed-by: Hayden Laccabue Signed-off-by: Hayden Laccabue Signed-off-by: David Zhang Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20260330163705.3153647-3-lizhi.hou@amd.com

accel/amdxdna: Create shared functions for AIE2 and AIE4

2026-04-01T17:11:36+00:00

The AIE4 platform uses a mailbox management channel mechanism similar to AIE2 to communicate with the firmware. Create aie.h and aie.c and move the functions and structures that can be shared by both platforms from the AIE2-specific files into these common files. This allows AIE2 and AIE4 to reuse the same implementation and reduces code duplication. Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20260330163705.3153647-2-lizhi.hou@amd.com

accel/amdxdna: Allow forcing IOVA-based DMA via module parameter

2026-03-12T19:37:56+00:00

The amdxdna driver normally performs DMA using userspace virtual address plus PASID. For debugging and validation purposes, add a module parameter, force_iova, to force DMA to go through IOMMU IOVA mapping. When force_iova=1 is set, the driver will allocate and map DMA buffers using IOVA. Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20260126193001.1400545-1-lizhi.hou@amd.com

accel/amdxdna: Remove NPU2 support

2025-12-18T18:36:22+00:00

NPU2 hardware was never publicly released and is now obsolete. Remove all remaining NPU2 support from the driver. Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20251217190818.2145781-1-lizhi.hou@amd.com

accel/amdxdna: Enhance runtime power management

2025-09-24T20:47:59+00:00

Currently, pm_runtime_resume_and_get() is invoked in the driver's open callback, and pm_runtime_put_autosuspend() is called in the close callback. As a result, the device remains active whenever an application opens it, even if no I/O is performed, leading to unnecessary power consumption. Move the runtime PM calls to the AIE2 callbacks that actually interact with the hardware. The device will automatically suspend after 5 seconds of inactivity (no hardware accesses and no pending commands), and it will be resumed on the next hardware access. Reviewed-by: Karol Wachowski Signed-off-by: Lizhi Hou Link: https://lore.kernel.org/r/20250923152229.1303625-1-lizhi.hou@amd.com

accel/amdxdna: Support user space allocated buffer

2025-07-22T15:34:29+00:00

Enhance DRM_IOCTL_AMDXDNA_CREATE_BO to accept user space allocated buffer pointer. The buffer pages will be pinned in memory. Unless the CAP_IPC_LOCK is enabled for the application process, the total pinned memory can not beyond rlimit_memlock. Reviewed-by: Jacek Lawrynowicz Signed-off-by: Lizhi Hou Link: https://lore.kernel.org/r/20250716164414.112091-1-lizhi.hou@amd.com