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| author | Nipun Gupta <nipun.gupta@amd.com> | 2023-09-15 10:24:21 +0530 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-09-28 12:12:07 -0600 |
| commit | a941b784b15ff65e1a3b6a259c6d6cf7fa0bb3c3 (patch) | |
| tree | 10bcc48828fc5741e1cbce64efe13916ab971288 /drivers/cdx/controller/cdx_controller.c | |
| parent | a1e16a38968806b5fc855e17bc124d752a6b7fc8 (diff) | |
| download | linux-a941b784b15ff65e1a3b6a259c6d6cf7fa0bb3c3.tar.gz linux-a941b784b15ff65e1a3b6a259c6d6cf7fa0bb3c3.tar.bz2 linux-a941b784b15ff65e1a3b6a259c6d6cf7fa0bb3c3.zip | |
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 <nipun.gupta@amd.com>
Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com>
Link: https://lore.kernel.org/r/20230915045423.31630-1-nipun.gupta@amd.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/cdx/controller/cdx_controller.c')
| -rw-r--r-- | drivers/cdx/controller/cdx_controller.c | 4 |
1 files changed, 4 insertions, 0 deletions
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; } |