LXR linux/drivers/infiniband/hw/nes/nes

   1/*
   2* Copyright (c) 2006 - 2011 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
  38int nes_init_mgt_qp(struct nes_device *nesdev, struct net_device *netdev, struct nes_vnic *nesvnic);
  39void nes_queue_mgt_skbs(struct sk_buff *skb, struct nes_vnic *nesvnic, struct nes_qp *nesqp);
  40void nes_destroy_mgt(struct nes_vnic *nesvnic);
  41void nes_destroy_pau_qp(struct nes_device *nesdev, struct nes_qp *nesqp);
  42
  43struct 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
  57struct 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
  67struct pau_fpdu_frag {
  68        struct sk_buff         *skb;
  69        u64                    physaddr;
  70        u32                    frag_len;
  71        bool                   cmplt;
  72};
  73
  74struct 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
  85enum pau_qh_state {
  86        PAU_DEL_QH,
  87        PAU_ADD_LB_QH,
  88        PAU_READY
  89};
  90
  91struct 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 */
  98