diff options
| author | David Zhang <yidong.zhang@amd.com> | 2026-05-05 19:09:34 +0300 |
|---|---|---|
| committer | Lizhi Hou <lizhi.hou@amd.com> | 2026-05-08 00:07:34 +0300 |
| commit | 91f4da826c082f7dca4a1f90fa3f032255f69c18 (patch) | |
| tree | d2110178911dc6005b5e2d2941455372b5feb01b /include | |
| parent | 193612791eea3648e6647ad74cacb191f9d0ef33 (diff) | |
| download | linux-91f4da826c082f7dca4a1f90fa3f032255f69c18.tar.xz | |
accel/amdxdna: Add command doorbell and wait support
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
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/drm/amdxdna_accel.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/include/uapi/drm/amdxdna_accel.h b/include/uapi/drm/amdxdna_accel.h index ad9b33dd7b13..51a507561df6 100644 --- a/include/uapi/drm/amdxdna_accel.h +++ b/include/uapi/drm/amdxdna_accel.h @@ -45,7 +45,8 @@ enum amdxdna_drm_ioctl_id { DRM_AMDXDNA_EXEC_CMD, DRM_AMDXDNA_GET_INFO, DRM_AMDXDNA_SET_STATE, - DRM_AMDXDNA_GET_ARRAY = 10, + DRM_AMDXDNA_WAIT_CMD, + DRM_AMDXDNA_GET_ARRAY, }; /** @@ -275,6 +276,21 @@ struct amdxdna_drm_exec_cmd { }; /** + * struct amdxdna_drm_wait_cmd - Wait execution command. + * + * @hwctx: Context handle. + * @timeout: timeout in ms, 0 implies infinite wait. + * @seq: sequence number of the command returned by execute command. + * + * Wait a command specified by seq to be completed. + */ +struct amdxdna_drm_wait_cmd { + __u32 hwctx; + __u32 timeout; + __u64 seq; +}; + +/** * struct amdxdna_drm_query_aie_status - Query the status of the AIE hardware * @buffer: The user space buffer that will return the AIE status. * @buffer_size: The size of the user space buffer. @@ -739,6 +755,10 @@ struct amdxdna_drm_set_power_mode { DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_GET_ARRAY, \ struct amdxdna_drm_get_array) +#define DRM_IOCTL_AMDXDNA_WAIT_CMD \ + DRM_IOW(DRM_COMMAND_BASE + DRM_AMDXDNA_WAIT_CMD, \ + struct amdxdna_drm_wait_cmd) + #if defined(__cplusplus) } /* extern c end */ #endif |