2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 #include <linux/mutex.h>
36 #include <linux/list.h>
37 #include <linux/spinlock.h>
38 #include <linux/idr.h>
40 #include <rdma/ib_verbs.h>
43 #include "cxgb3_offload.h"
50 struct iwch_rnic_attributes {
54 u32 max_wrs; /* Max for any SQ/RQ */
56 u32 max_sge_per_rdma_write_wr; /* for RDMA Write WR */
60 u32 max_phys_buf_entries; /* for phys buf list */
64 * The memory page sizes supported by this RNIC.
65 * Bit position i in bitmap indicates page of
66 * size (4k)^i. Phys block list mode unsupported.
68 u32 mem_pgsizes_bitmask;
72 * The maximum number of RDMA Reads that can be outstanding
73 * per QP with this RNIC as the target.
75 u32 max_rdma_reads_per_qp;
78 * The maximum number of resources used for RDMA Reads
79 * by this RNIC with this RNIC as the target.
81 u32 max_rdma_read_resources;
84 * The max depth per QP for initiation of RDMA Read
87 u32 max_rdma_read_qp_depth;
90 * The maximum depth for initiation of RDMA Read
91 * operations by this RNIC on all QPs
93 u32 max_rdma_read_depth;
94 u8 rq_overflow_handled;
100 u8 local_invalidate_fence;
101 u32 cq_overflow_detection;
105 struct ib_device ibdev;
106 struct cxio_rdev rdev;
107 u32 device_cap_flags;
108 struct iwch_rnic_attributes attr;
113 struct list_head entry;
116 static inline struct iwch_dev *to_iwch_dev(struct ib_device *ibdev)
118 return container_of(ibdev, struct iwch_dev, ibdev);
121 static inline int t3b_device(const struct iwch_dev *rhp)
123 return rhp->rdev.t3cdev_p->type == T3B;
126 static inline int t3a_device(const struct iwch_dev *rhp)
128 return rhp->rdev.t3cdev_p->type == T3A;
131 static inline struct iwch_cq *get_chp(struct iwch_dev *rhp, u32 cqid)
133 return idr_find(&rhp->cqidr, cqid);
136 static inline struct iwch_qp *get_qhp(struct iwch_dev *rhp, u32 qpid)
138 return idr_find(&rhp->qpidr, qpid);
141 static inline struct iwch_mr *get_mhp(struct iwch_dev *rhp, u32 mmid)
143 return idr_find(&rhp->mmidr, mmid);
146 static inline int insert_handle(struct iwch_dev *rhp, struct idr *idr,
147 void *handle, u32 id)
153 if (!idr_pre_get(idr, GFP_KERNEL)) {
156 spin_lock_irq(&rhp->lock);
157 ret = idr_get_new_above(idr, handle, id, &newid);
159 spin_unlock_irq(&rhp->lock);
160 } while (ret == -EAGAIN);
165 static inline void remove_handle(struct iwch_dev *rhp, struct idr *idr, u32 id)
167 spin_lock_irq(&rhp->lock);
169 spin_unlock_irq(&rhp->lock);
172 extern struct cxgb3_client t3c_client;
173 extern cxgb3_cpl_handler_func t3c_handlers[NUM_CPL_CMDS];
174 extern void iwch_ev_dispatch(struct cxio_rdev *rdev_p, struct sk_buff *skb);