2 * Copyright (c) 2005 Cisco Systems. 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
32 * $Id: ib_srp.h 3932 2005-11-01 17:19:29Z roland $
38 #include <linux/types.h>
39 #include <linux/list.h>
41 #include <asm/semaphore.h>
43 #include <scsi/scsi_host.h>
44 #include <scsi/scsi_cmnd.h>
46 #include <rdma/ib_verbs.h>
47 #include <rdma/ib_sa.h>
48 #include <rdma/ib_cm.h>
51 SRP_PATH_REC_TIMEOUT_MS = 1000,
52 SRP_ABORT_TIMEOUT_MS = 5000,
54 SRP_PORT_REDIRECT = 1,
55 SRP_DLID_REDIRECT = 2,
60 SRP_RQ_SIZE = 1 << SRP_RQ_SHIFT,
61 SRP_SQ_SIZE = SRP_RQ_SIZE - 1,
62 SRP_CQ_SIZE = SRP_SQ_SIZE + SRP_RQ_SIZE,
64 SRP_TAG_TSK_MGMT = 1 << (SRP_RQ_SHIFT + 1)
67 #define SRP_OP_RECV (1 << 31)
68 #define SRP_MAX_INDIRECT ((SRP_MAX_IU_LEN - \
69 sizeof (struct srp_cmd) - \
70 sizeof (struct srp_indirect_buf)) / 16)
72 enum srp_target_state {
74 SRP_TARGET_CONNECTING,
80 u8 initiator_port_id[16];
81 struct ib_device *dev;
85 struct class_device class_dev;
86 struct list_head target_list;
87 struct semaphore target_mutex;
88 struct completion released;
89 struct list_head list;
93 struct list_head list;
94 struct scsi_cmnd *scmnd;
96 struct srp_iu *tsk_mgmt;
97 DECLARE_PCI_UNMAP_ADDR(direct_mapping)
98 struct completion done;
104 struct srp_target_port {
108 struct srp_host *srp_host;
109 struct Scsi_Host *scsi_host;
110 char target_name[32];
111 unsigned int scsi_id;
113 struct ib_sa_path_rec path;
114 struct ib_sa_query *path_query;
117 struct ib_cm_id *cm_id;
125 struct srp_iu *rx_ring[SRP_RQ_SIZE];
129 struct srp_iu *tx_ring[SRP_SQ_SIZE + 1];
132 struct list_head req_queue;
133 struct srp_request req_ring[SRP_SQ_SIZE];
135 struct work_struct work;
137 struct list_head list;
138 struct completion done;
140 enum srp_target_state state;
147 enum dma_data_direction direction;
150 #endif /* IB_SRP_H */