nfp: abm: add initial active buffer management NIC skeleton
Add a very rudimentary active buffer management NIC support.
For now it's like a core NIC without SR-IOV support. Next
commits will extend its functionality.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/netronome/nfp/abm/main.c b/drivers/net/ethernet/netronome/nfp/abm/main.c
new file mode 100644
index 0000000..7a0a807
--- /dev/null
+++ b/drivers/net/ethernet/netronome/nfp/abm/main.c
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+/*
+ * Copyright (C) 2018 Netronome Systems, Inc.
+ *
+ * This software is dual licensed under the GNU General License Version 2,
+ * June 1991 as shown in the file COPYING in the top-level directory of this
+ * source tree or the BSD 2-Clause License provided below. You have the
+ * option to license this software under the complete terms of either license.
+ *
+ * The BSD 2-Clause License:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "../nfpcore/nfp_cpp.h"
+#include "../nfpcore/nfp_nsp.h"
+#include "../nfp_app.h"
+#include "../nfp_main.h"
+#include "main.h"
+
+static int nfp_abm_init(struct nfp_app *app)
+{
+ struct nfp_pf *pf = app->pf;
+ struct nfp_abm *abm;
+
+ if (!pf->eth_tbl) {
+ nfp_err(pf->cpp, "ABM NIC requires ETH table\n");
+ return -EINVAL;
+ }
+ if (pf->max_data_vnics != pf->eth_tbl->count) {
+ nfp_err(pf->cpp, "ETH entries don't match vNICs (%d vs %d)\n",
+ pf->max_data_vnics, pf->eth_tbl->count);
+ return -EINVAL;
+ }
+ if (!pf->mac_stats_bar) {
+ nfp_warn(app->cpp, "ABM NIC requires mac_stats symbol\n");
+ return -EINVAL;
+ }
+
+ abm = kzalloc(sizeof(*abm), GFP_KERNEL);
+ if (!abm)
+ return -ENOMEM;
+ app->priv = abm;
+ abm->app = app;
+
+ return 0;
+}
+
+static void nfp_abm_clean(struct nfp_app *app)
+{
+ struct nfp_abm *abm = app->priv;
+
+ kfree(abm);
+ app->priv = NULL;
+}
+
+const struct nfp_app_type app_abm = {
+ .id = NFP_APP_ACTIVE_BUFFER_MGMT_NIC,
+ .name = "abm",
+
+ .init = nfp_abm_init,
+ .clean = nfp_abm_clean,
+
+ .vnic_alloc = nfp_app_nic_vnic_alloc,
+};