drivers/infiniband/hw/nes/nes_mgt.h

   1 /*
   2 * Copyright (c) 2010 Intel-NE, Inc.  All rights reserved.
   3 *
   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
  33 #ifndef __NES_MGT_H
  34 #define __NES_MGT_H
  35
  36 #define MPA_FRAMING 6   /* length is 2 bytes, crc is 4 bytes */
  37
  38 int nes_init_mgt_qp(struct nes_device *nesdev, struct net_device *netdev, struct nes_vnic *nesvnic);
  39 void nes_queue_mgt_skbs(struct sk_buff *skb, struct nes_vnic *nesvnic, struct nes_qp *nesqp);
  40 void nes_destroy_mgt(struct nes_vnic *nesvnic);
  41 void nes_destroy_pau_qp(struct nes_device *nesdev, struct nes_qp *nesqp);
  42
  43 struct nes_hw_mgt {
  44         struct nes_hw_nic_rq_wqe *rq_vbase;     /* virtual address of rq */
  45         dma_addr_t rq_pbase;                    /* PCI memory for host rings */
  46         struct sk_buff *rx_skb[NES_NIC_WQ_SIZE];
  47         u16 qp_id;
  48         u16 sq_head;
  49         u16 rq_head;
  50         u16 rq_tail;
  51         u16 rq_size;
  52         u8 replenishing_rq;
  53         u8 reserved;
  54         spinlock_t rq_lock;
  55 };
  56
  57 struct nes_vnic_mgt {
  58         struct nes_vnic        *nesvnic;
  59         struct nes_hw_mgt      mgt;
  60         struct nes_hw_nic_cq   mgt_cq;
  61         atomic_t               rx_skbs_needed;
  62         struct timer_list      rq_wqes_timer;
  63         atomic_t               rx_skb_timer_running;
  64 };
  65
  66 #define MAX_FPDU_FRAGS 4
  67 struct pau_fpdu_frag {
  68         struct sk_buff         *skb;
  69         u64                    physaddr;
  70         u32                    frag_len;
  71         bool                   cmplt;
  72 };
  73
  74 struct pau_fpdu_info {
  75         struct nes_qp          *nesqp;
  76         struct nes_cqp_request *cqp_request;
  77         void                   *hdr_vbase;
  78         dma_addr_t             hdr_pbase;
  79         int                    hdr_len;
  80         u16                    data_len;
  81         u16                    frag_cnt;
  82         struct pau_fpdu_frag   frags[MAX_FPDU_FRAGS];
  83 };
  84
  85 enum pau_qh_state {
  86         PAU_DEL_QH,
  87         PAU_ADD_LB_QH,
  88         PAU_READY
  89 };
  90
  91 struct pau_qh_chg {
  92         struct nes_device *nesdev;
  93         struct nes_vnic *nesvnic;
  94         struct nes_qp *nesqp;
  95 };
  96
  97 #endif          /* __NES_MGT_H */