drivers/net/octeontx2/otx2_ethdev_devargs.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #include <inttypes.h>
   6 #include <math.h>
   7
   8 #include "otx2_ethdev.h"
   9
  10 static int
  11 parse_flow_max_priority(const char *key, const char *value, void *extra_args)
  12 {
  13         RTE_SET_USED(key);
  14         uint16_t val;
  15
  16         val = atoi(value);
  17
  18         /* Limit the max priority to 32 */
  19         if (val < 1 || val > 32)
  20                 return -EINVAL;
  21
  22         *(uint16_t *)extra_args = val;
  23
  24         return 0;
  25 }
  26
  27 static int
  28 parse_flow_prealloc_size(const char *key, const char *value, void *extra_args)
  29 {
  30         RTE_SET_USED(key);
  31         uint16_t val;
  32
  33         val = atoi(value);
  34
  35         /* Limit the prealloc size to 32 */
  36         if (val < 1 || val > 32)
  37                 return -EINVAL;
  38
  39         *(uint16_t *)extra_args = val;
  40
  41         return 0;
  42 }
  43
  44 static int
  45 parse_reta_size(const char *key, const char *value, void *extra_args)
  46 {
  47         RTE_SET_USED(key);
  48         uint32_t val;
  49
  50         val = atoi(value);
  51
  52         if (val <= ETH_RSS_RETA_SIZE_64)
  53                 val = ETH_RSS_RETA_SIZE_64;
  54         else if (val > ETH_RSS_RETA_SIZE_64 && val <= ETH_RSS_RETA_SIZE_128)
  55                 val = ETH_RSS_RETA_SIZE_128;
  56         else if (val > ETH_RSS_RETA_SIZE_128 && val <= ETH_RSS_RETA_SIZE_256)
  57                 val = ETH_RSS_RETA_SIZE_256;
  58         else
  59                 val = NIX_RSS_RETA_SIZE;
  60
  61         *(uint16_t *)extra_args = val;
  62
  63         return 0;
  64 }
  65
  66 static int
  67 parse_ptype_flag(const char *key, const char *value, void *extra_args)
  68 {
  69         RTE_SET_USED(key);
  70         uint32_t val;
  71
  72         val = atoi(value);
  73         if (val)
  74                 val = 0; /* Disable NIX_RX_OFFLOAD_PTYPE_F */
  75
  76         *(uint16_t *)extra_args = val;
  77
  78         return 0;
  79 }
  80
  81 static int
  82 parse_flag(const char *key, const char *value, void *extra_args)
  83 {
  84         RTE_SET_USED(key);
  85
  86         *(uint16_t *)extra_args = atoi(value);
  87
  88         return 0;
  89 }
  90
  91 static int
  92 parse_sqb_count(const char *key, const char *value, void *extra_args)
  93 {
  94         RTE_SET_USED(key);
  95         uint32_t val;
  96
  97         val = atoi(value);
  98
  99         if (val < NIX_MIN_SQB || val > NIX_MAX_SQB)
 100                 return -EINVAL;
 101
 102         *(uint16_t *)extra_args = val;
 103
 104         return 0;
 105 }
 106
 107 static int
 108 parse_switch_header_type(const char *key, const char *value, void *extra_args)
 109 {
 110         RTE_SET_USED(key);
 111
 112         if (strcmp(value, "higig2") == 0)
 113                 *(uint16_t *)extra_args = OTX2_PRIV_FLAGS_HIGIG;
 114
 115         if (strcmp(value, "dsa") == 0)
 116                 *(uint16_t *)extra_args = OTX2_PRIV_FLAGS_EDSA;
 117
 118         return 0;
 119 }
 120
 121 #define OTX2_RSS_RETA_SIZE "reta_size"
 122 #define OTX2_PTYPE_DISABLE "ptype_disable"
 123 #define OTX2_SCL_ENABLE "scalar_enable"
 124 #define OTX2_MAX_SQB_COUNT "max_sqb_count"
 125 #define OTX2_FLOW_PREALLOC_SIZE "flow_prealloc_size"
 126 #define OTX2_FLOW_MAX_PRIORITY "flow_max_priority"
 127 #define OTX2_SWITCH_HEADER_TYPE "switch_header"
 128
 129 int
 130 otx2_ethdev_parse_devargs(struct rte_devargs *devargs, struct otx2_eth_dev *dev)
 131 {
 132         uint16_t offload_flag = NIX_RX_OFFLOAD_PTYPE_F;
 133         uint16_t rss_size = NIX_RSS_RETA_SIZE;
 134         uint16_t sqb_count = NIX_MAX_SQB;
 135         uint16_t flow_prealloc_size = 8;
 136         uint16_t switch_header_type = 0;
 137         uint16_t flow_max_priority = 3;
 138         uint16_t scalar_enable = 0;
 139         struct rte_kvargs *kvlist;
 140
 141         if (devargs == NULL)
 142                 goto null_devargs;
 143
 144         kvlist = rte_kvargs_parse(devargs->args, NULL);
 145         if (kvlist == NULL)
 146                 goto exit;
 147
 148         rte_kvargs_process(kvlist, OTX2_PTYPE_DISABLE,
 149                            &parse_ptype_flag, &offload_flag);
 150         rte_kvargs_process(kvlist, OTX2_RSS_RETA_SIZE,
 151                            &parse_reta_size, &rss_size);
 152         rte_kvargs_process(kvlist, OTX2_SCL_ENABLE,
 153                            &parse_flag, &scalar_enable);
 154         rte_kvargs_process(kvlist, OTX2_MAX_SQB_COUNT,
 155                            &parse_sqb_count, &sqb_count);
 156         rte_kvargs_process(kvlist, OTX2_FLOW_PREALLOC_SIZE,
 157                            &parse_flow_prealloc_size, &flow_prealloc_size);
 158         rte_kvargs_process(kvlist, OTX2_FLOW_MAX_PRIORITY,
 159                            &parse_flow_max_priority, &flow_max_priority);
 160         rte_kvargs_process(kvlist, OTX2_SWITCH_HEADER_TYPE,
 161                            &parse_switch_header_type, &switch_header_type);
 162         rte_kvargs_free(kvlist);
 163
 164 null_devargs:
 165         dev->rx_offload_flags = offload_flag;
 166         dev->scalar_ena = scalar_enable;
 167         dev->max_sqb_count = sqb_count;
 168         dev->rss_info.rss_size = rss_size;
 169         dev->npc_flow.flow_prealloc_size = flow_prealloc_size;
 170         dev->npc_flow.flow_max_priority = flow_max_priority;
 171         dev->npc_flow.switch_header_type = switch_header_type;
 172         return 0;
 173
 174 exit:
 175         return -EINVAL;
 176 }
 177
 178 RTE_PMD_REGISTER_PARAM_STRING(net_octeontx2,
 179                               OTX2_RSS_RETA_SIZE "=<64|128|256>"
 180                               OTX2_PTYPE_DISABLE "=1"
 181                               OTX2_SCL_ENABLE "=1"
 182                               OTX2_MAX_SQB_COUNT "=<8-512>"
 183                               OTX2_FLOW_PREALLOC_SIZE "=<1-32>"
 184                               OTX2_FLOW_MAX_PRIORITY "=<1-32>"
 185                               OTX2_SWITCH_HEADER_TYPE "=<higig2|dsa>");