cxgb4: Add support to initialise/read SRQ entries

- This patch adds support to initialise srq table and read srq entries

Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 65 insertions, 0 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb4/srq.h b/drivers/net/ethernet/chelsio/cxgb4/srq.h
new file mode 100644
index 000000000000..ec85cf93865a
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/cxgb4/srq.h
@@ -0,0 +1,65 @@
+/*
+ * This file is part of the Chelsio T6 Ethernet driver for Linux.
+ *
+ * Copyright (c) 2017-2018 Chelsio Communications, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - 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.
+ */
+
+#ifndef __CXGB4_SRQ_H
+#define __CXGB4_SRQ_H
+
+struct adapter;
+struct cpl_srq_table_rpl;
+
+#define SRQ_WAIT_TO	(HZ * 5)
+
+struct srq_entry {
+	u8 valid;
+	u8 idx;
+	u8 qlen;
+	u16 pdid;
+	u16 cur_msn;
+	u16 max_msn;
+	u32 qbase;
+};
+
+struct srq_data {
+	unsigned int srq_size;
+	struct srq_entry *entryp;
+	struct completion comp;
+	struct mutex lock; /* generic mutex for srq data */
+};
+
+struct srq_data *t4_init_srq(int srq_size);
+int cxgb4_get_srq_entry(struct net_device *dev,
+			int srq_idx, struct srq_entry *entryp);
+void do_srq_table_rpl(struct adapter *adap,
+		      const struct cpl_srq_table_rpl *rpl);
+#endif  /* __CXGB4_SRQ_H */