After removal of the QTD, the device driver needs to make sure that
the host controller is really done with this QTD, and does not have
any local/cached copy of this. This is achieved by employing a 3-bit
handshake as explained in the echi spec 4.8.2 and Fig 4-10
Also add missing memory barrier.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Clean up all the dma allocated buffers and remove their mappings.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Acked-by: Thomas Huth <thuth@linux.vnet.ibm.com>
* Implement USB ehci bulk transfer
* USB core add bulk transfer api
Signed-off-by: Avik Sil <aviksil@linux.vnet.ibm.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Call usb-core routine to setup the newly found device
Signed-off-by: Avik Sil <aviksil@linux.vnet.ibm.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Discover devices connected on the controller
Signed-off-by: Avik Sil <aviksil@linux.vnet.ibm.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Acked-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Avik Sil <aviksil@linux.vnet.ibm.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Nikunj A Dadhania