ceph/src/seastar/dpdk/drivers/net/ark/ark_pktdir.c

   1 /*-
   2  * BSD LICENSE
   3  *
   4  * Copyright (c) 2015-2017 Atomic Rules LLC
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * * Redistributions of source code must retain the above copyright
  12  * notice, this list of conditions and the following disclaimer.
  13  * * Redistributions in binary form must reproduce the above copyright
  14  * notice, this list of conditions and the following disclaimer in
  15  * the documentation and/or other materials provided with the
  16  * distribution.
  17  * * Neither the name of copyright holder nor the names of its
  18  * contributors may be used to endorse or promote products derived
  19  * from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdint.h>
  35 #include <inttypes.h>
  36
  37 #include "ark_pktdir.h"
  38 #include "ark_global.h"
  39
  40
  41 ark_pkt_dir_t
  42 ark_pktdir_init(void *base)
  43 {
  44         struct ark_pkt_dir_inst *inst =
  45                 rte_malloc("ark_pkt_dir_inst",
  46                            sizeof(struct ark_pkt_dir_inst),
  47                            0);
  48         inst->regs = (struct ark_pkt_dir_regs *)base;
  49         inst->regs->ctrl = 0x00110110;  /* POR state */
  50         return inst;
  51 }
  52
  53 void
  54 ark_pktdir_uninit(ark_pkt_dir_t handle)
  55 {
  56         struct ark_pkt_dir_inst *inst = (struct ark_pkt_dir_inst *)handle;
  57
  58         rte_free(inst);
  59 }
  60
  61 void
  62 ark_pktdir_setup(ark_pkt_dir_t handle, uint32_t v)
  63 {
  64         struct ark_pkt_dir_inst *inst = (struct ark_pkt_dir_inst *)handle;
  65         inst->regs->ctrl = v;
  66 }
  67
  68 uint32_t
  69 ark_pktdir_status(ark_pkt_dir_t handle)
  70 {
  71         struct ark_pkt_dir_inst *inst = (struct ark_pkt_dir_inst *)handle;
  72         return inst->regs->ctrl;
  73 }
  74
  75 uint32_t
  76 ark_pktdir_stall_cnt(ark_pkt_dir_t handle)
  77 {
  78         struct ark_pkt_dir_inst *inst = (struct ark_pkt_dir_inst *)handle;
  79         return inst->regs->stall_cnt;
  80 }