RDMA/amso1100: Add driver for Ammasso 1100 RNIC

Add a driver for the Ammasso 1100 gigabit ethernet RNIC.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 181 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/amso1100/c2_provider.h b/drivers/infiniband/hw/amso1100/c2_provider.h
new file mode 100644
index 000000000000..fc906223220f
--- /dev/null
+++ b/drivers/infiniband/hw/amso1100/c2_provider.h
@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
+ * Copyright (c) 2005 Open Grid Computing, 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 C2_PROVIDER_H
+#define C2_PROVIDER_H
+#include <linux/inetdevice.h>
+
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_pack.h>
+
+#include "c2_mq.h"
+#include <rdma/iw_cm.h>
+
+#define C2_MPT_FLAG_ATOMIC        (1 << 14)
+#define C2_MPT_FLAG_REMOTE_WRITE  (1 << 13)
+#define C2_MPT_FLAG_REMOTE_READ   (1 << 12)
+#define C2_MPT_FLAG_LOCAL_WRITE   (1 << 11)
+#define C2_MPT_FLAG_LOCAL_READ    (1 << 10)
+
+struct c2_buf_list {
+        void *buf;
+         DECLARE_PCI_UNMAP_ADDR(mapping)
+};
+
+
+/* The user context keeps track of objects allocated for a
+ * particular user-mode client. */
+struct c2_ucontext {
+        struct ib_ucontext ibucontext;
+};
+
+struct c2_mtt;
+
+/* All objects associated with a PD are kept in the
+ * associated user context if present.
+ */
+struct c2_pd {
+        struct ib_pd ibpd;
+        u32 pd_id;
+};
+
+struct c2_mr {
+        struct ib_mr ibmr;
+        struct c2_pd *pd;
+};
+
+struct c2_av;
+
+enum c2_ah_type {
+        C2_AH_ON_HCA,
+        C2_AH_PCI_POOL,
+        C2_AH_KMALLOC
+};
+
+struct c2_ah {
+        struct ib_ah ibah;
+};
+
+struct c2_cq {
+        struct ib_cq ibcq;
+        spinlock_t lock;
+        atomic_t refcount;
+        int cqn;
+        int is_kernel;
+        wait_queue_head_t wait;
+
+        u32 adapter_handle;
+        struct c2_mq mq;
+};
+
+struct c2_wq {
+        spinlock_t lock;
+};
+struct iw_cm_id;
+struct c2_qp {
+        struct ib_qp ibqp;
+        struct iw_cm_id *cm_id;
+        spinlock_t lock;
+        atomic_t refcount;
+        wait_queue_head_t wait;
+        int qpn;
+
+        u32 adapter_handle;
+        u32 send_sgl_depth;
+        u32 recv_sgl_depth;
+        u32 rdma_write_sgl_depth;
+        u8 state;
+
+        struct c2_mq sq_mq;
+        struct c2_mq rq_mq;
+};
+
+struct c2_cr_query_attrs {
+        u32 local_addr;
+        u32 remote_addr;
+        u16 local_port;
+        u16 remote_port;
+};
+
+static inline struct c2_pd *to_c2pd(struct ib_pd *ibpd)
+{
+        return container_of(ibpd, struct c2_pd, ibpd);
+}
+
+static inline struct c2_ucontext *to_c2ucontext(struct ib_ucontext *ibucontext)
+{
+        return container_of(ibucontext, struct c2_ucontext, ibucontext);
+}
+
+static inline struct c2_mr *to_c2mr(struct ib_mr *ibmr)
+{
+        return container_of(ibmr, struct c2_mr, ibmr);
+}
+
+
+static inline struct c2_ah *to_c2ah(struct ib_ah *ibah)
+{
+        return container_of(ibah, struct c2_ah, ibah);
+}
+
+static inline struct c2_cq *to_c2cq(struct ib_cq *ibcq)
+{
+        return container_of(ibcq, struct c2_cq, ibcq);
+}
+
+static inline struct c2_qp *to_c2qp(struct ib_qp *ibqp)
+{
+        return container_of(ibqp, struct c2_qp, ibqp);
+}
+
+static inline int is_rnic_addr(struct net_device *netdev, u32 addr)
+{
+        struct in_device *ind;
+        int ret = 0;
+
+        ind = in_dev_get(netdev);
+        if (!ind)
+                return 0;
+
+        for_ifa(ind) {
+                if (ifa->ifa_address == addr) {
+                        ret = 1;
+                        break;
+                }
+        }
+        endfor_ifa(ind);
+        in_dev_put(ind);
+        return ret;
+}
+#endif                          /* C2_PROVIDER_H */