Imported Upstream version 16.04

[deb_dpdk.git] / drivers / net / enic / base / wq_enet_desc.h

diff --git a/drivers/net/enic/base/wq_enet_desc.h b/drivers/net/enic/base/wq_enet_desc.h
new file mode 100644 (file)
index 0000000..db41d00
--- /dev/null
+++ b/drivers/net/enic/base/wq_enet_desc.h
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
+ *
+ * Copyright (c) 2014, Cisco Systems, Inc.
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef _WQ_ENET_DESC_H_
+#define _WQ_ENET_DESC_H_
+
+/* Ethernet work queue descriptor: 16B */
+struct wq_enet_desc {
+       __le64 address;
+       __le16 length;
+       __le16 mss_loopback;
+       __le16 header_length_flags;
+       __le16 vlan_tag;
+};
+
+#define WQ_ENET_ADDR_BITS              64
+#define WQ_ENET_LEN_BITS               14
+#define WQ_ENET_LEN_MASK               ((1 << WQ_ENET_LEN_BITS) - 1)
+#define WQ_ENET_MSS_BITS               14
+#define WQ_ENET_MSS_MASK               ((1 << WQ_ENET_MSS_BITS) - 1)
+#define WQ_ENET_MSS_SHIFT              2
+#define WQ_ENET_LOOPBACK_SHIFT         1
+#define WQ_ENET_HDRLEN_BITS            10
+#define WQ_ENET_HDRLEN_MASK            ((1 << WQ_ENET_HDRLEN_BITS) - 1)
+#define WQ_ENET_FLAGS_OM_BITS          2
+#define WQ_ENET_FLAGS_OM_MASK          ((1 << WQ_ENET_FLAGS_OM_BITS) - 1)
+#define WQ_ENET_FLAGS_EOP_SHIFT                12
+#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT   13
+#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14
+#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT    15
+
+#define WQ_ENET_OFFLOAD_MODE_CSUM      0
+#define WQ_ENET_OFFLOAD_MODE_RESERVED  1
+#define WQ_ENET_OFFLOAD_MODE_CSUM_L4   2
+#define WQ_ENET_OFFLOAD_MODE_TSO       3
+
+static inline void wq_enet_desc_enc(struct wq_enet_desc *desc,
+       u64 address, u16 length, u16 mss, u16 header_length,
+       u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap,
+       u8 vlan_tag_insert, u16 vlan_tag, u8 loopback)
+{
+       desc->address = cpu_to_le64(address);
+       desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK);
+       desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) <<
+               WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT);
+       desc->header_length_flags = cpu_to_le16(
+               (header_length & WQ_ENET_HDRLEN_MASK) |
+               (offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS |
+               (eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT |
+               (cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT |
+               (fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT |
+               (vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT);
+       desc->vlan_tag = cpu_to_le16(vlan_tag);
+}
+
+static inline void wq_enet_desc_dec(struct wq_enet_desc *desc,
+       u64 *address, u16 *length, u16 *mss, u16 *header_length,
+       u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap,
+       u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback)
+{
+       *address = le64_to_cpu(desc->address);
+       *length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK;
+       *mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) &
+               WQ_ENET_MSS_MASK;
+       *loopback = (u8)((le16_to_cpu(desc->mss_loopback) >>
+               WQ_ENET_LOOPBACK_SHIFT) & 1);
+       *header_length = le16_to_cpu(desc->header_length_flags) &
+               WQ_ENET_HDRLEN_MASK;
+       *offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >>
+               WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK);
+       *eop = (u8)((le16_to_cpu(desc->header_length_flags) >>
+               WQ_ENET_FLAGS_EOP_SHIFT) & 1);
+       *cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >>
+               WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1);
+       *fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >>
+               WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1);
+       *vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >>
+               WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1);
+       *vlan_tag = le16_to_cpu(desc->vlan_tag);
+}
+
+#endif /* _WQ_ENET_DESC_H_ */