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author | Dirk van der Merwe <dirk.vandermerwe@netronome.com> | 2019-09-09 00:54:23 +0100 |
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committer | David S. Miller <davem@davemloft.net> | 2019-09-10 17:29:27 +0100 |
commit | 165c3c9f8c3b860b8f179479bfb8eee6bec2beb2 (patch) | |
tree | 39a8d90d7c50c6ea2bf754d5018f85a8ad300283 /drivers/net/ethernet/netronome/nfp/devlink_param.c | |
parent | f8921d73301f526219ee3fa85d325cc4e676f58e (diff) | |
download | linux-stable-165c3c9f8c3b860b8f179479bfb8eee6bec2beb2.tar.gz linux-stable-165c3c9f8c3b860b8f179479bfb8eee6bec2beb2.tar.bz2 linux-stable-165c3c9f8c3b860b8f179479bfb8eee6bec2beb2.zip |
nfp: add devlink param infrastructure
Register devlink parameters for driver use. Subsequent patches will add
support for specific parameters.
In order to support devlink parameters, the management firmware needs to
be able to lookup and set hwinfo keys.
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/devlink_param.c')
-rw-r--r-- | drivers/net/ethernet/netronome/nfp/devlink_param.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/devlink_param.c b/drivers/net/ethernet/netronome/nfp/devlink_param.c new file mode 100644 index 000000000000..aece98586e32 --- /dev/null +++ b/drivers/net/ethernet/netronome/nfp/devlink_param.c @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +/* Copyright (C) 2019 Netronome Systems, Inc. */ + +#include <net/devlink.h> + +#include "nfpcore/nfp_nsp.h" +#include "nfp_main.h" + +static const struct devlink_param nfp_devlink_params[] = { +}; + +static int nfp_devlink_supports_params(struct nfp_pf *pf) +{ + struct nfp_nsp *nsp; + bool supported; + int err; + + nsp = nfp_nsp_open(pf->cpp); + if (IS_ERR(nsp)) { + err = PTR_ERR(nsp); + dev_err(&pf->pdev->dev, "Failed to access the NSP: %d\n", err); + return err; + } + + supported = nfp_nsp_has_hwinfo_lookup(nsp) && + nfp_nsp_has_hwinfo_set(nsp); + + nfp_nsp_close(nsp); + return supported; +} + +int nfp_devlink_params_register(struct nfp_pf *pf) +{ + struct devlink *devlink = priv_to_devlink(pf); + int err; + + err = nfp_devlink_supports_params(pf); + if (err <= 0) + return err; + + err = devlink_params_register(devlink, nfp_devlink_params, + ARRAY_SIZE(nfp_devlink_params)); + if (err) + return err; + + devlink_params_publish(devlink); + return 0; +} + +void nfp_devlink_params_unregister(struct nfp_pf *pf) +{ + int err; + + err = nfp_devlink_supports_params(pf); + if (err <= 0) + return; + + devlink_params_unregister(priv_to_devlink(pf), nfp_devlink_params, + ARRAY_SIZE(nfp_devlink_params)); +} |