drivers/infiniband/hw/nes/nes_verbs.h

   1 /*
   2  * Copyright (c) 2006 - 2011 Intel Corporation.  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 #define NES_TERM_SENT            0x01
  44 #define NES_TERM_RCVD            0x02
  45 #define NES_TERM_DONE            0x04
  46
  47 struct nes_ucontext {
  48         struct ib_ucontext ibucontext;
  49         struct nes_device  *nesdev;
  50         unsigned long      mmap_wq_offset;
  51         unsigned long      mmap_cq_offset; /* to be removed */
  52         int                index;               /* rnic index (minor) */
  53         unsigned long      allocated_doorbells[BITS_TO_LONGS(NES_MAX_USER_DB_REGIONS)];
  54         u16                mmap_db_index[NES_MAX_USER_DB_REGIONS];
  55         u16                first_free_db;
  56         unsigned long      allocated_wqs[BITS_TO_LONGS(NES_MAX_USER_WQ_REGIONS)];
  57         struct nes_qp      *mmap_nesqp[NES_MAX_USER_WQ_REGIONS];
  58         u16                first_free_wq;
  59         struct list_head   cq_reg_mem_list;
  60         struct list_head   qp_reg_mem_list;
  61         u32                mcrqf;
  62         atomic_t           usecnt;
  63 };
  64
  65 struct nes_pd {
  66         struct ib_pd ibpd;
  67         u16          pd_id;
  68         atomic_t     sqp_count;
  69         u16          mmap_db_index;
  70 };
  71
  72 struct nes_mr {
  73         union {
  74                 struct ib_mr  ibmr;
  75                 struct ib_mw  ibmw;
  76                 struct ib_fmr ibfmr;
  77         };
  78         struct ib_umem    *region;
  79         u16               pbls_used;
  80         u8                mode;
  81         u8                pbl_4k;
  82         __le64            *pages;
  83         dma_addr_t        paddr;
  84         u32               max_pages;
  85         u32               npages;
  86 };
  87
  88 struct nes_hw_pb {
  89         __le32 pa_low;
  90         __le32 pa_high;
  91 };
  92
  93 struct nes_vpbl {
  94         dma_addr_t       pbl_pbase;
  95         struct nes_hw_pb *pbl_vbase;
  96 };
  97
  98 struct nes_root_vpbl {
  99         dma_addr_t       pbl_pbase;
 100         struct nes_hw_pb *pbl_vbase;
 101         struct nes_vpbl  *leaf_vpbl;
 102 };
 103
 104 struct nes_fmr {
 105         struct nes_mr        nesmr;
 106         u32                  leaf_pbl_cnt;
 107         struct nes_root_vpbl root_vpbl;
 108         struct ib_qp         *ib_qp;
 109         int                  access_rights;
 110         struct ib_fmr_attr   attr;
 111 };
 112
 113 struct nes_av;
 114
 115 struct nes_cq {
 116         struct ib_cq     ibcq;
 117         struct nes_hw_cq hw_cq;
 118         u32              polled_completions;
 119         u32              cq_mem_size;
 120         spinlock_t       lock;
 121         u8               virtual_cq;
 122         u8               pad[3];
 123         u32              mcrqf;
 124 };
 125
 126 struct nes_wq {
 127         spinlock_t lock;
 128 };
 129
 130 struct disconn_work {
 131         struct work_struct    work;
 132         struct nes_qp         *nesqp;
 133 };
 134
 135 struct iw_cm_id;
 136 struct ietf_mpa_frame;
 137
 138 struct nes_qp {
 139         struct ib_qp          ibqp;
 140         void                  *allocated_buffer;
 141         struct iw_cm_id       *cm_id;
 142         struct nes_cq         *nesscq;
 143         struct nes_cq         *nesrcq;
 144         struct nes_pd         *nespd;
 145         void *cm_node; /* handle of the node this QP is associated with */
 146         void                  *ietf_frame;
 147         u8                    ietf_frame_size;
 148         dma_addr_t            ietf_frame_pbase;
 149         struct ib_mr          *lsmm_mr;
 150         struct nes_hw_qp      hwqp;
 151         struct work_struct    work;
 152         enum ib_qp_state      ibqp_state;
 153         u32                   iwarp_state;
 154         u32                   hte_index;
 155         u32                   last_aeq;
 156         u32                   qp_mem_size;
 157         atomic_t              refcount;
 158         atomic_t              close_timer_started;
 159         u32                   mmap_sq_db_index;
 160         u32                   mmap_rq_db_index;
 161         spinlock_t            lock;
 162         spinlock_t            pau_lock;
 163         struct nes_qp_context *nesqp_context;
 164         dma_addr_t            nesqp_context_pbase;
 165         void                  *pbl_vbase;
 166         dma_addr_t            pbl_pbase;
 167         struct page           *page;
 168         struct timer_list     terminate_timer;
 169         enum ib_event_type    terminate_eventtype;
 170         struct sk_buff_head   pau_list;
 171         u32                   pau_rcv_nxt;
 172         u16                   active_conn:1;
 173         u16                   skip_lsmm:1;
 174         u16                   user_mode:1;
 175         u16                   hte_added:1;
 176         u16                   flush_issued:1;
 177         u16                   destroyed:1;
 178         u16                   sig_all:1;
 179         u16                   pau_mode:1;
 180         u16                   rsvd:8;
 181         u16                   private_data_len;
 182         u16                   term_sq_flush_code;
 183         u16                   term_rq_flush_code;
 184         u8                    hw_iwarp_state;
 185         u8                    hw_tcp_state;
 186         u8                    term_flags;
 187         u8                    sq_kmapped;
 188         u8                    pau_busy;
 189         u8                    pau_pending;
 190         u8                    pau_state;
 191         __u64                 nesuqp_addr;
 192         struct completion     sq_drained;
 193         struct completion     rq_drained;
 194 };
 195
 196 struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
 197                 u64 addr, u64 size, int acc, u64 *iova_start);
 198
 199 #endif                  /* NES_VERBS_H */