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Diffstat (limited to 'Documentation/accel')
| -rw-r--r-- | Documentation/accel/qaic/qaic.rst | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/accel/qaic/qaic.rst b/Documentation/accel/qaic/qaic.rst index f81020736ebf..efb7771273bb 100644 --- a/Documentation/accel/qaic/qaic.rst +++ b/Documentation/accel/qaic/qaic.rst @@ -93,8 +93,15 @@ commands (does not impact QAIC). uAPI ==== +QAIC creates an accel device per phsyical PCIe device. This accel device exists +for as long as the PCIe device is known to Linux. + +The PCIe device may not be in the state to accept requests from userspace at +all times. QAIC will trigger KOBJ_ONLINE/OFFLINE uevents to advertise when the +device can accept requests (ONLINE) and when the device is no longer accepting +requests (OFFLINE) because of a reset or other state transition. + QAIC defines a number of driver specific IOCTLs as part of the userspace API. -This section describes those APIs. DRM_IOCTL_QAIC_MANAGE This IOCTL allows userspace to send a NNC request to the QSM. The call will |