Define the vas_rx_win_open() interface. This interface is intended to be
used by the Nest Accelerator (NX) driver(s) to setup receive windows for
one or more NX engines (which implement compression/encryption algorithms
in the hardware).

Follow-on patches will provide an interface to close the window and to open
a send window that kenrel subsystems can use to access the NX engines.

The interface to open a receive window is expected to be invoked for each
instance of VAS in the system.

Signed-off-by: Sukadev Bhattiprolu <>

        - Add support for FTW windows

        - Export the symbols

        - Fault receive windows must enable interrupts and disable
          notifications. NX Windows are opposite.
        - Use macros rather than enum for threshold-control mode
        - Ignore irq_ports for in-kernel windows. They are needed for
          user space windows and will be added later
 arch/powerpc/platforms/powernv/vas-window.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/powernv/vas-window.c 
index ff64022..dfa7e67 100644
--- a/arch/powerpc/platforms/powernv/vas-window.c
+++ b/arch/powerpc/platforms/powernv/vas-window.c
@@ -717,7 +717,7 @@ void clear_vinst_win(struct vas_window *window)
-       if (!window->tx_win) {
+       if (!window->user_win && !window->tx_win) {
                vinst->rxwin[window->cop] = NULL;

Reply via email to