Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 /*
  2  * Copyright (c) 2006 - 2009 Intel-NE, Inc.  All rights reserved.
  3  * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
  4  *
  5  * This software is available to you under a choice of one of two
  6  * licenses.  You may choose to be licensed under the terms of the GNU
  7  * General Public License (GPL) Version 2, available from the file
  8  * COPYING in the main directory of this source tree, or the
  9  * OpenIB.org BSD license below:
 10  *
 11  *     Redistribution and use in source and binary forms, with or
 12  *     without modification, are permitted provided that the following
 13  *     conditions are met:
 14  *
 15  *      - Redistributions of source code must retain the above
 16  *        copyright notice, this list of conditions and the following
 17  *        disclaimer.
 18  *
 19  *      - Redistributions in binary form must reproduce the above
 20  *        copyright notice, this list of conditions and the following
 21  *        disclaimer in the documentation and/or other materials
 22  *        provided with the distribution.
 23  *
 24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 31  * SOFTWARE.
 32  *
 33  */
 34 
 35 #ifndef NES_VERBS_H
 36 #define NES_VERBS_H
 37 
 38 struct nes_device;
 39 
 40 #define NES_MAX_USER_DB_REGIONS  4096
 41 #define NES_MAX_USER_WQ_REGIONS  4096
 42 
 43 struct nes_ucontext {
 44         struct ib_ucontext ibucontext;
 45         struct nes_device  *nesdev;
 46         unsigned long      mmap_wq_offset;
 47         unsigned long      mmap_cq_offset; /* to be removed */
 48         int                index;               /* rnic index (minor) */
 49         unsigned long      allocated_doorbells[BITS_TO_LONGS(NES_MAX_USER_DB_REGIONS)];
 50         u16                mmap_db_index[NES_MAX_USER_DB_REGIONS];
 51         u16                first_free_db;
 52         unsigned long      allocated_wqs[BITS_TO_LONGS(NES_MAX_USER_WQ_REGIONS)];
 53         struct nes_qp      *mmap_nesqp[NES_MAX_USER_WQ_REGIONS];
 54         u16                first_free_wq;
 55         struct list_head   cq_reg_mem_list;
 56         struct list_head   qp_reg_mem_list;
 57         u32                mcrqf;
 58         atomic_t           usecnt;
 59 };
 60 
 61 struct nes_pd {
 62         struct ib_pd ibpd;
 63         u16          pd_id;
 64         atomic_t     sqp_count;
 65         u16          mmap_db_index;
 66 };
 67 
 68 struct nes_mr {
 69         union {
 70                 struct ib_mr  ibmr;
 71                 struct ib_mw  ibmw;
 72                 struct ib_fmr ibfmr;
 73         };
 74         struct ib_umem    *region;
 75         u16               pbls_used;
 76         u8                mode;
 77         u8                pbl_4k;
 78 };
 79 
 80 struct nes_hw_pb {
 81         __le32 pa_low;
 82         __le32 pa_high;
 83 };
 84 
 85 struct nes_vpbl {
 86         dma_addr_t       pbl_pbase;
 87         struct nes_hw_pb *pbl_vbase;
 88 };
 89 
 90 struct nes_root_vpbl {
 91         dma_addr_t       pbl_pbase;
 92         struct nes_hw_pb *pbl_vbase;
 93         struct nes_vpbl  *leaf_vpbl;
 94 };
 95 
 96 struct nes_fmr {
 97         struct nes_mr        nesmr;
 98         u32                  leaf_pbl_cnt;
 99         struct nes_root_vpbl root_vpbl;
100         struct ib_qp         *ib_qp;
101         int                  access_rights;
102         struct ib_fmr_attr   attr;
103 };
104 
105 struct nes_av;
106 
107 struct nes_cq {
108         struct ib_cq     ibcq;
109         struct nes_hw_cq hw_cq;
110         u32              polled_completions;
111         u32              cq_mem_size;
112         spinlock_t       lock;
113         u8               virtual_cq;
114         u8               pad[3];
115         u32              mcrqf;
116 };
117 
118 struct nes_wq {
119         spinlock_t lock;
120 };
121 
122 struct iw_cm_id;
123 struct ietf_mpa_frame;
124 
125 struct nes_qp {
126         struct ib_qp          ibqp;
127         void                  *allocated_buffer;
128         struct iw_cm_id       *cm_id;
129         struct workqueue_struct *wq;
130         struct work_struct    disconn_work;
131         struct nes_cq         *nesscq;
132         struct nes_cq         *nesrcq;
133         struct nes_pd         *nespd;
134         void *cm_node; /* handle of the node this QP is associated with */
135         struct ietf_mpa_frame *ietf_frame;
136         dma_addr_t            ietf_frame_pbase;
137         wait_queue_head_t     state_waitq;
138         struct ib_mr          *lsmm_mr;
139         unsigned long         socket;
140         struct nes_hw_qp      hwqp;
141         struct work_struct    work;
142         struct work_struct    ae_work;
143         enum ib_qp_state      ibqp_state;
144         u32                   iwarp_state;
145         u32                   hte_index;
146         u32                   last_aeq;
147         u32                   qp_mem_size;
148         atomic_t              refcount;
149         atomic_t              close_timer_started;
150         u32                   mmap_sq_db_index;
151         u32                   mmap_rq_db_index;
152         spinlock_t            lock;
153         struct nes_qp_context *nesqp_context;
154         dma_addr_t            nesqp_context_pbase;
155         void                  *pbl_vbase;
156         dma_addr_t            pbl_pbase;
157         struct page           *page;
158         wait_queue_head_t     kick_waitq;
159         u16                   in_disconnect;
160         u16                   private_data_len;
161         u8                    active_conn;
162         u8                    skip_lsmm;
163         u8                    user_mode;
164         u8                    hte_added;
165         u8                    hw_iwarp_state;
166         u8                    flush_issued;
167         u8                    hw_tcp_state;
168         u8                    disconn_pending;
169         u8                    destroyed;
170 };
171 #endif                  /* NES_VERBS_H */
172 
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