From a941b784b15ff65e1a3b6a259c6d6cf7fa0bb3c3 Mon Sep 17 00:00:00 2001 From: Nipun Gupta Date: Fri, 15 Sep 2023 10:24:21 +0530 Subject: cdx: add support for bus mastering Introduce cdx_set_master() and cdx_clear_master() APIs to support enable and disable of bus mastering. Drivers need to use these APIs to enable/disable DMAs from the CDX devices. Signed-off-by: Nipun Gupta Reviewed-by: Pieter Jansen van Vuuren Link: https://lore.kernel.org/r/20230915045423.31630-1-nipun.gupta@amd.com Signed-off-by: Alex Williamson --- drivers/cdx/controller/cdx_controller.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/cdx/controller/cdx_controller.c') diff --git a/drivers/cdx/controller/cdx_controller.c b/drivers/cdx/controller/cdx_controller.c index bb4ae7970e21..7828dac8edb1 100644 --- a/drivers/cdx/controller/cdx_controller.c +++ b/drivers/cdx/controller/cdx_controller.c @@ -56,6 +56,10 @@ static int cdx_configure_device(struct cdx_controller *cdx, case CDX_DEV_RESET_CONF: ret = cdx_mcdi_reset_device(cdx->priv, bus_num, dev_num); break; + case CDX_DEV_BUS_MASTER_CONF: + ret = cdx_mcdi_bus_master_enable(cdx->priv, bus_num, dev_num, + dev_config->bus_master_enable); + break; default: ret = -EINVAL; } -- cgit v1.2.3