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 <suka...@linux.vnet.ibm.com>
---
Changelog[v6]:
- Add support for FTW windows
Changelog[v4]:
- Export the symbols
Changelog[v3]:
- 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
b/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)
mutex_lock(&vinst->mutex);
- if (!window->tx_win) {
+ if (!window->user_win && !window->tx_win) {
WARN_ON_ONCE(!vinst->rxwin[window->cop]);
vinst->rxwin[window->cop] = NULL;
}
--
2.7.4
