Changes in aie.c

c006978163fd001fbca55e5fa57bddcf49f47ad9 - accel/amdxdna: Add AIE4 work buffer initialization

Tue, 05 May 2026 18:09:36 +0200

accel/amdxdna: Add AIE4 work buffer initializationNPU firmware requires a host-allocated work buffer for hardware contexts.Allocate a 4 MB host buffer and attach it to device during device init.Refactor aie2_alloc_msg_buffer() and aie2_free_msg_buffer() into commonhelpers by moving them to aie.c and renaming them toamdxdna_alloc_msg_buffer() and amdxdna_free_msg_buffer(), allowing bothAIE2 and AIE4 to reuse the implementation.Signed-off-by: Nishad Saraf Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Lizhi Hou Link: https://lore.kernel.org/all/20260505160936.3917732-7-lizhi.hou@amd.com/ List of files: /linux/drivers/accel/amdxdna/aie.c

0b087e0636245f7393610cef0f45333effcdd86a - accel/amdxdna: Add AIE4 metadata query support

Wed, 06 May 2026 18:16:42 +0200

accel/amdxdna: Add AIE4 metadata query supportAdd support for querying device metadata on AIE4 via a mailbox message.Refactor aie2_get_aie_metadata() into a common helper by moving it toaie.c and renaming it to amdxdna_get_metadata(), allowing both AIE2and AIE4 to reuse the implementation.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/20260506161642.141257-1-lizhi.hou@amd.com List of files: /linux/drivers/accel/amdxdna/aie.c

d8c33b9c4bfc1349cfdcf180e708ba55e5e28ce9 - accel/amdxdna: Get device revision to derive VBNV string

Thu, 16 Apr 2026 21:01:50 +0200

accel/amdxdna: Get device revision to derive VBNV stringAdd support for querying the device revision from firmware.Use the returned revision to look up the VBNV string during deviceinitialization, and fall back to the default VBNV when the revisionquery is not supported or no mapping is found.This allows the driver to report the accurate VBNV for devices thatshare the same vendor/device ID but differ by hardware revision.Signed-off-by: Max Zhen Reviewed-by: Mario Limonciello (AMD) [Lizhi: Revise amdxdna_vbnv_init()]Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20260416190150.1040067-1-lizhi.hou@amd.com List of files: /linux/drivers/accel/amdxdna/aie.c

5a55a5da1f01274c07359b09abec952ec9f05105 - accel/amdxdna: Create shared functions for AIE2 and AIE4

Mon, 30 Mar 2026 18:37:00 +0200

accel/amdxdna: Create shared functions for AIE2 and AIE4The AIE4 platform uses a mailbox management channel mechanism similar toAIE2 to communicate with the firmware.Create aie.h and aie.c and move the functions and structures that canbe shared by both platforms from the AIE2-specific files into thesecommon files. This allows AIE2 and AIE4 to reuse the same implementationand 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 List of files: /linux/drivers/accel/amdxdna/aie.c