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authorUpinder Malhi <umalhi@cisco.com>2013-09-10 05:38:16 +0200
committerRoland Dreier <roland@purestorage.com>2014-01-14 09:44:28 +0100
commite3cf00d0a87f025db5855a43a67c67a41fa79fef (patch)
tree34ab93de5918af08434dcf063e4ff5ae78425989 /drivers/infiniband/hw/usnic/usnic_abi.h
parentLinux 3.13-rc8 (diff)
downloadlinux-e3cf00d0a87f025db5855a43a67c67a41fa79fef.tar.xz
linux-e3cf00d0a87f025db5855a43a67c67a41fa79fef.zip
IB/usnic: Add Cisco VIC low-level hardware driver
This adds a driver that allows userspace to use UD-like QPs over a proprietary Cisco transport with Cisco's Virtual Interface Cards (VICs), including VIC 1240 and 1280 cards. Signed-off-by: Upinder Malhi <umalhi@cisco.com> Signed-off-by: Christian Benvenuti <benve@cisco.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/usnic/usnic_abi.h')
-rw-r--r--drivers/infiniband/hw/usnic/usnic_abi.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/usnic/usnic_abi.h b/drivers/infiniband/hw/usnic/usnic_abi.h
new file mode 100644
index 000000000000..510b7d702465
--- /dev/null
+++ b/drivers/infiniband/hw/usnic/usnic_abi.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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 USNIC_ABI_H
+#define USNIC_ABI_H
+
+/* ABI between userspace and kernel */
+#define USNIC_UVERBS_ABI_VERSION 2
+
+#define USNIC_QP_GRP_MAX_WQS 8
+#define USNIC_QP_GRP_MAX_RQS 8
+#define USNIC_QP_GRP_MAX_CQS 16
+
+enum usnic_transport_type {
+ USNIC_TRANSPORT_UNKNOWN = 0,
+ USNIC_TRANSPORT_ROCE_CUSTOM = 1,
+ USNIC_TRANSPORT_MAX = 2,
+};
+
+/*TODO: Future - usnic_modify_qp needs to pass in generic filters */
+struct usnic_ib_create_qp_resp {
+ u32 vfid;
+ u32 qp_grp_id;
+ u64 bar_bus_addr;
+ u32 bar_len;
+/*
+ * WQ, RQ, CQ are explicity specified bc exposing a generic resources inteface
+ * expands the scope of ABI to many files.
+ */
+ u32 wq_cnt;
+ u32 rq_cnt;
+ u32 cq_cnt;
+ u32 wq_idx[USNIC_QP_GRP_MAX_WQS];
+ u32 rq_idx[USNIC_QP_GRP_MAX_RQS];
+ u32 cq_idx[USNIC_QP_GRP_MAX_CQS];
+ u32 transport;
+ u32 reserved[9];
+};
+
+#endif /* USNIC_ABI_H */