accel/amdxdna: Add AIE4 work buffer initialization

NPU firmware requires a host-allocated work buffer for hardware contexts.
Allocate a 4 MB host buffer and attach it to device during device init.

accel/amdxdna: Add AIE4 work buffer initialization

NPU 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 common
helpers by moving them to aie.c and renaming them to
amdxdna_alloc_msg_buffer() and amdxdna_free_msg_buffer(), allowing both
AIE2 and AIE4 to reuse the implementation.

Signed-off-by: Nishad Saraf <nishads@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://lore.kernel.org/all/20260505160936.3917732-7-lizhi.hou@amd.com/

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accel/amdxdna: Add AIE4 metadata query support

Add support for querying device metadata on AIE4 via a mailbox message.
Refactor aie2_get_aie_metadata() into a common helper by moving it to
aie.c and

accel/amdxdna: Add AIE4 metadata query support

Add support for querying device metadata on AIE4 via a mailbox message.
Refactor aie2_get_aie_metadata() into a common helper by moving it to
aie.c and renaming it to amdxdna_get_metadata(), allowing both AIE2
and AIE4 to reuse the implementation.

Co-developed-by: Hayden Laccabue <Hayden.Laccabue@amd.com>
Signed-off-by: Hayden Laccabue <Hayden.Laccabue@amd.com>
Signed-off-by: David Zhang <yidong.zhang@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260506161642.141257-1-lizhi.hou@amd.com

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accel/amdxdna: Get device revision to derive VBNV string

Add support for querying the device revision from firmware.

Use the returned revision to look up the VBNV string during device
initializatio

accel/amdxdna: Get device revision to derive VBNV string

Add support for querying the device revision from firmware.

Use the returned revision to look up the VBNV string during device
initialization, and fall back to the default VBNV when the revision
query is not supported or no mapping is found.

This allows the driver to report the accurate VBNV for devices that
share the same vendor/device ID but differ by hardware revision.

Signed-off-by: Max Zhen <max.zhen@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
[Lizhi: Revise amdxdna_vbnv_init()]
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260416190150.1040067-1-lizhi.hou@amd.com

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accel/amdxdna: Create shared functions for AIE2 and AIE4

The AIE4 platform uses a mailbox management channel mechanism similar to
AIE2 to communicate with the firmware.

Create aie.h and aie.c and m

accel/amdxdna: Create shared functions for AIE2 and AIE4

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) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260330163705.3153647-2-lizhi.hou@amd.com

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