linux.git/drivers/accel/amdxdna/aie4_host_queue.h, branch master Linux kernel source tree accel/amdxdna: Add command doorbell and wait support 2026-05-07T21:07:34+00:00 David Zhang yidong.zhang@amd.com 2026-05-05T16:09:34+00:00 91f4da826c082f7dca4a1f90fa3f032255f69c18 Expose the command doorbell register to userspace on a per-hardware context basis, enabling applications to notify the firmware of pending commands via doorbell writes. Introduce DRM_IOCTL_AMDXDNA_WAIT_CMD to allow userspace to wait for completion of individual commands. 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/20260505160936.3917732-5-lizhi.hou@amd.com 
Expose the command doorbell register to userspace on a per-hardware
context basis, enabling applications to notify the firmware of pending
commands via doorbell writes.

Introduce DRM_IOCTL_AMDXDNA_WAIT_CMD to allow userspace to wait for
completion of individual commands.

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/20260505160936.3917732-5-lizhi.hou@amd.com
accel/amdxdna: Add AIE4 VF hardware context create and destroy 2026-05-07T21:07:34+00:00 David Zhang yidong.zhang@amd.com 2026-05-05T16:09:33+00:00 193612791eea3648e6647ad74cacb191f9d0ef33 Implement hardware context creation and destruction for AIE4 VF devices. 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/20260505160936.3917732-4-lizhi.hou@amd.com 
Implement hardware context creation and destruction for AIE4 VF devices.

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/20260505160936.3917732-4-lizhi.hou@amd.com