blob: d2409a505e8d5d3f6b659b4af0a07d0421cf8672 [file] [log] [blame]
Steve Wiseb038ced2007-02-12 16:16:18 -08001/*
2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
Steve Wiseb038ced2007-02-12 16:16:18 -08003 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 */
32#ifndef __IWCH_H__
33#define __IWCH_H__
34
35#include <linux/mutex.h>
36#include <linux/list.h>
37#include <linux/spinlock.h>
38#include <linux/idr.h>
39
40#include <rdma/ib_verbs.h>
41
42#include "cxio_hal.h"
43#include "cxgb3_offload.h"
44
45struct iwch_pd;
46struct iwch_cq;
47struct iwch_qp;
48struct iwch_mr;
49
50struct iwch_rnic_attributes {
51 u32 vendor_id;
52 u32 vendor_part_id;
53 u32 max_qps;
54 u32 max_wrs; /* Max for any SQ/RQ */
55 u32 max_sge_per_wr;
56 u32 max_sge_per_rdma_write_wr; /* for RDMA Write WR */
57 u32 max_cqs;
58 u32 max_cqes_per_cq;
59 u32 max_mem_regs;
60 u32 max_phys_buf_entries; /* for phys buf list */
61 u32 max_pds;
62
63 /*
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.
67 */
68 u32 mem_pgsizes_bitmask;
Steve Wiseccaf10d2008-04-29 13:46:52 -070069 u64 max_mr_size;
Steve Wiseb038ced2007-02-12 16:16:18 -080070 u8 can_resize_wq;
71
72 /*
73 * The maximum number of RDMA Reads that can be outstanding
74 * per QP with this RNIC as the target.
75 */
76 u32 max_rdma_reads_per_qp;
77
78 /*
79 * The maximum number of resources used for RDMA Reads
80 * by this RNIC with this RNIC as the target.
81 */
82 u32 max_rdma_read_resources;
83
84 /*
85 * The max depth per QP for initiation of RDMA Read
86 * by this RNIC.
87 */
88 u32 max_rdma_read_qp_depth;
89
90 /*
91 * The maximum depth for initiation of RDMA Read
92 * operations by this RNIC on all QPs
93 */
94 u32 max_rdma_read_depth;
95 u8 rq_overflow_handled;
96 u32 can_modify_ird;
97 u32 can_modify_ord;
98 u32 max_mem_windows;
99 u32 stag0_value;
100 u8 zbva_support;
101 u8 local_invalidate_fence;
102 u32 cq_overflow_detection;
103};
104
105struct iwch_dev {
106 struct ib_device ibdev;
107 struct cxio_rdev rdev;
108 u32 device_cap_flags;
109 struct iwch_rnic_attributes attr;
110 struct idr cqidr;
111 struct idr qpidr;
112 struct idr mmidr;
113 spinlock_t lock;
114 struct list_head entry;
115};
116
117static inline struct iwch_dev *to_iwch_dev(struct ib_device *ibdev)
118{
119 return container_of(ibdev, struct iwch_dev, ibdev);
120}
121
122static inline int t3b_device(const struct iwch_dev *rhp)
123{
124 return rhp->rdev.t3cdev_p->type == T3B;
125}
126
127static inline int t3a_device(const struct iwch_dev *rhp)
128{
129 return rhp->rdev.t3cdev_p->type == T3A;
130}
131
132static inline struct iwch_cq *get_chp(struct iwch_dev *rhp, u32 cqid)
133{
134 return idr_find(&rhp->cqidr, cqid);
135}
136
137static inline struct iwch_qp *get_qhp(struct iwch_dev *rhp, u32 qpid)
138{
139 return idr_find(&rhp->qpidr, qpid);
140}
141
142static inline struct iwch_mr *get_mhp(struct iwch_dev *rhp, u32 mmid)
143{
144 return idr_find(&rhp->mmidr, mmid);
145}
146
147static inline int insert_handle(struct iwch_dev *rhp, struct idr *idr,
148 void *handle, u32 id)
149{
150 int ret;
Roland Dreieredba8462008-04-16 21:01:06 -0700151 int newid;
Steve Wiseb038ced2007-02-12 16:16:18 -0800152
153 do {
154 if (!idr_pre_get(idr, GFP_KERNEL)) {
155 return -ENOMEM;
156 }
157 spin_lock_irq(&rhp->lock);
158 ret = idr_get_new_above(idr, handle, id, &newid);
159 BUG_ON(newid != id);
160 spin_unlock_irq(&rhp->lock);
161 } while (ret == -EAGAIN);
162
163 return ret;
164}
165
166static inline void remove_handle(struct iwch_dev *rhp, struct idr *idr, u32 id)
167{
168 spin_lock_irq(&rhp->lock);
169 idr_remove(idr, id);
170 spin_unlock_irq(&rhp->lock);
171}
172
173extern struct cxgb3_client t3c_client;
174extern cxgb3_cpl_handler_func t3c_handlers[NUM_CPL_CMDS];
175extern void iwch_ev_dispatch(struct cxio_rdev *rdev_p, struct sk_buff *skb);
176
177#endif