ceph/src/seastar/dpdk/drivers/net/ark/ark_udm.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 <unistd.h>
  35
  36 #include "ark_logs.h"
  37 #include "ark_udm.h"
  38
  39 int
  40 ark_udm_verify(struct ark_udm_t *udm)
  41 {
  42         if (sizeof(struct ark_udm_t) != ARK_UDM_EXPECT_SIZE) {
  43                 PMD_DRV_LOG(ERR,
  44                             "ARK: UDM structure looks incorrect %d vs %zd\n",
  45                             ARK_UDM_EXPECT_SIZE, sizeof(struct ark_udm_t));
  46                 return -1;
  47         }
  48
  49         if (udm->setup.const0 != ARK_UDM_CONST) {
  50                 PMD_DRV_LOG(ERR,
  51                             "ARK: UDM module not found as expected 0x%08x\n",
  52                             udm->setup.const0);
  53                 return -1;
  54         }
  55         return 0;
  56 }
  57
  58 int
  59 ark_udm_stop(struct ark_udm_t *udm, const int wait)
  60 {
  61         int cnt = 0;
  62
  63         udm->cfg.command = 2;
  64
  65         while (wait && (udm->cfg.stop_flushed & 0x01) == 0) {
  66                 if (cnt++ > 1000)
  67                         return 1;
  68
  69                 usleep(10);
  70         }
  71         return 0;
  72 }
  73
  74 int
  75 ark_udm_reset(struct ark_udm_t *udm)
  76 {
  77         int status;
  78
  79         status = ark_udm_stop(udm, 1);
  80         if (status != 0) {
  81                 PMD_DEBUG_LOG(INFO, "%s  stop failed  doing forced reset\n",
  82                               __func__);
  83                 udm->cfg.command = 4;
  84                 usleep(10);
  85                 udm->cfg.command = 3;
  86                 status = ark_udm_stop(udm, 0);
  87                 PMD_DEBUG_LOG(INFO, "%s  stop status %d post failure"
  88                               " and forced reset\n",
  89                               __func__, status);
  90         } else {
  91                 udm->cfg.command = 3;
  92         }
  93
  94         return status;
  95 }
  96
  97 void
  98 ark_udm_start(struct ark_udm_t *udm)
  99 {
 100         udm->cfg.command = 1;
 101 }
 102
 103 void
 104 ark_udm_stats_reset(struct ark_udm_t *udm)
 105 {
 106         udm->pcibp.pci_clear = 1;
 107         udm->tlp_ps.tlp_clear = 1;
 108 }
 109
 110 void
 111 ark_udm_configure(struct ark_udm_t *udm,
 112                   uint32_t headroom,
 113                   uint32_t dataroom,
 114                   uint32_t write_interval_ns)
 115 {
 116         /* headroom and data room are in DWords in the UDM */
 117         udm->cfg.dataroom = dataroom / 4;
 118         udm->cfg.headroom = headroom / 4;
 119
 120         /* 4 NS period ns */
 121         udm->rt_cfg.write_interval = write_interval_ns / 4;
 122 }
 123
 124 void
 125 ark_udm_write_addr(struct ark_udm_t *udm, phys_addr_t addr)
 126 {
 127         udm->rt_cfg.hw_prod_addr = addr;
 128 }
 129
 130 int
 131 ark_udm_is_flushed(struct ark_udm_t *udm)
 132 {
 133         return (udm->cfg.stop_flushed & 0x01) != 0;
 134 }
 135
 136 uint64_t
 137 ark_udm_dropped(struct ark_udm_t *udm)
 138 {
 139         return udm->qstats.q_pkt_drop;
 140 }
 141
 142 uint64_t
 143 ark_udm_bytes(struct ark_udm_t *udm)
 144 {
 145         return udm->qstats.q_byte_count;
 146 }
 147
 148 uint64_t
 149 ark_udm_packets(struct ark_udm_t *udm)
 150 {
 151         return udm->qstats.q_ff_packet_count;
 152 }
 153
 154 void
 155 ark_udm_dump_stats(struct ark_udm_t *udm, const char *msg)
 156 {
 157         PMD_STATS_LOG(INFO, "UDM Stats: %s"
 158                       ARK_SU64 ARK_SU64 ARK_SU64 ARK_SU64 ARK_SU64 "\n",
 159                       msg,
 160                       "Pkts Received", udm->stats.rx_packet_count,
 161                       "Pkts Finalized", udm->stats.rx_sent_packets,
 162                       "Pkts Dropped", udm->tlp.pkt_drop,
 163                       "Bytes Count", udm->stats.rx_byte_count,
 164                       "MBuf Count", udm->stats.rx_mbuf_count);
 165 }
 166
 167 void
 168 ark_udm_dump_queue_stats(struct ark_udm_t *udm, const char *msg, uint16_t qid)
 169 {
 170         PMD_STATS_LOG(INFO, "UDM Queue %3u Stats: %s"
 171                       ARK_SU64 ARK_SU64
 172                       ARK_SU64 ARK_SU64
 173                       ARK_SU64 "\n",
 174                       qid, msg,
 175                       "Pkts Received", udm->qstats.q_packet_count,
 176                       "Pkts Finalized", udm->qstats.q_ff_packet_count,
 177                       "Pkts Dropped", udm->qstats.q_pkt_drop,
 178                       "Bytes Count", udm->qstats.q_byte_count,
 179                       "MBuf Count", udm->qstats.q_mbuf_count);
 180 }
 181
 182 void
 183 ark_udm_dump(struct ark_udm_t *udm, const char *msg)
 184 {
 185         PMD_DEBUG_LOG(DEBUG, "UDM Dump: %s Stopped: %d\n", msg,
 186                       udm->cfg.stop_flushed);
 187 }
 188
 189 void
 190 ark_udm_dump_setup(struct ark_udm_t *udm, uint16_t q_id)
 191 {
 192         PMD_DEBUG_LOG(DEBUG, "UDM Setup Q: %u"
 193                       ARK_SU64X ARK_SU32 "\n",
 194                       q_id,
 195                       "hw_prod_addr", udm->rt_cfg.hw_prod_addr,
 196                       "prod_idx", udm->rt_cfg.prod_idx);
 197 }
 198
 199 void
 200 ark_udm_dump_perf(struct ark_udm_t *udm, const char *msg)
 201 {
 202         struct ark_udm_pcibp_t *bp = &udm->pcibp;
 203
 204         PMD_STATS_LOG(INFO, "UDM Performance %s"
 205                       ARK_SU32 ARK_SU32 ARK_SU32 ARK_SU32 ARK_SU32 ARK_SU32
 206                       "\n",
 207                       msg,
 208                       "PCI Empty", bp->pci_empty,
 209                       "PCI Q1", bp->pci_q1,
 210                       "PCI Q2", bp->pci_q2,
 211                       "PCI Q3", bp->pci_q3,
 212                       "PCI Q4", bp->pci_q4,
 213                       "PCI Full", bp->pci_full);
 214 }
 215
 216 void
 217 ark_udm_queue_stats_reset(struct ark_udm_t *udm)
 218 {
 219         udm->qstats.q_byte_count = 1;
 220 }
 221
 222 void
 223 ark_udm_queue_enable(struct ark_udm_t *udm, int enable)
 224 {
 225         udm->qstats.q_enable = enable ? 1 : 0;
 226 }