drivers/net/ethernet/atheros/atl1e/atl1e_param.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright(c) 2007 Atheros Corporation. All rights reserved.
   4  *
   5  * Derived from Intel e1000 driver
   6  * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
   7  */
   8
   9 #include <linux/netdevice.h>
  10
  11 #include "atl1e.h"
  12
  13 /* This is the only thing that needs to be changed to adjust the
  14  * maximum number of ports that the driver can manage.
  15  */
  16
  17 #define ATL1E_MAX_NIC 32
  18
  19 #define OPTION_UNSET    -1
  20 #define OPTION_DISABLED 0
  21 #define OPTION_ENABLED  1
  22
  23 /* All parameters are treated the same, as an integer array of values.
  24  * This macro just reduces the need to repeat the same declaration code
  25  * over and over (plus this helps to avoid typo bugs).
  26  */
  27 #define ATL1E_PARAM_INIT { [0 ... ATL1E_MAX_NIC] = OPTION_UNSET }
  28
  29 #define ATL1E_PARAM(x, desc) \
  30         static int x[ATL1E_MAX_NIC + 1] = ATL1E_PARAM_INIT; \
  31         static unsigned int num_##x; \
  32         module_param_array_named(x, x, int, &num_##x, 0); \
  33         MODULE_PARM_DESC(x, desc);
  34
  35 /* Transmit Memory count
  36  *
  37  * Valid Range: 64-2048
  38  *
  39  * Default Value: 128
  40  */
  41 #define ATL1E_MIN_TX_DESC_CNT           32
  42 #define ATL1E_MAX_TX_DESC_CNT           1020
  43 #define ATL1E_DEFAULT_TX_DESC_CNT       128
  44 ATL1E_PARAM(tx_desc_cnt, "Transmit description count");
  45
  46 /* Receive Memory Block Count
  47  *
  48  * Valid Range: 16-512
  49  *
  50  * Default Value: 128
  51  */
  52 #define ATL1E_MIN_RX_MEM_SIZE           8    /* 8KB   */
  53 #define ATL1E_MAX_RX_MEM_SIZE           1024 /* 1MB   */
  54 #define ATL1E_DEFAULT_RX_MEM_SIZE       256  /* 128KB */
  55 ATL1E_PARAM(rx_mem_size, "memory size of rx buffer(KB)");
  56
  57 /* User Specified MediaType Override
  58  *
  59  * Valid Range: 0-5
  60  *  - 0    - auto-negotiate at all supported speeds
  61  *  - 1    - only link at 100Mbps Full Duplex
  62  *  - 2    - only link at 100Mbps Half Duplex
  63  *  - 3    - only link at 10Mbps Full Duplex
  64  *  - 4    - only link at 10Mbps Half Duplex
  65  * Default Value: 0
  66  */
  67
  68 ATL1E_PARAM(media_type, "MediaType Select");
  69
  70 /* Interrupt Moderate Timer in units of 2 us
  71  *
  72  * Valid Range: 10-65535
  73  *
  74  * Default Value: 45000(90ms)
  75  */
  76 #define INT_MOD_DEFAULT_CNT             100 /* 200us */
  77 #define INT_MOD_MAX_CNT                 65000
  78 #define INT_MOD_MIN_CNT                 50
  79 ATL1E_PARAM(int_mod_timer, "Interrupt Moderator Timer");
  80
  81 #define AUTONEG_ADV_DEFAULT  0x2F
  82 #define AUTONEG_ADV_MASK     0x2F
  83 #define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
  84
  85 #define FLASH_VENDOR_DEFAULT    0
  86 #define FLASH_VENDOR_MIN        0
  87 #define FLASH_VENDOR_MAX        2
  88
  89 struct atl1e_option {
  90         enum { enable_option, range_option, list_option } type;
  91         char *name;
  92         char *err;
  93         int  def;
  94         union {
  95                 struct { /* range_option info */
  96                         int min;
  97                         int max;
  98                 } r;
  99                 struct { /* list_option info */
 100                         int nr;
 101                         struct atl1e_opt_list { int i; char *str; } *p;
 102                 } l;
 103         } arg;
 104 };
 105
 106 static int atl1e_validate_option(int *value, struct atl1e_option *opt,
 107                                  struct atl1e_adapter *adapter)
 108 {
 109         if (*value == OPTION_UNSET) {
 110                 *value = opt->def;
 111                 return 0;
 112         }
 113
 114         switch (opt->type) {
 115         case enable_option:
 116                 switch (*value) {
 117                 case OPTION_ENABLED:
 118                         netdev_info(adapter->netdev,
 119                                     "%s Enabled\n", opt->name);
 120                         return 0;
 121                 case OPTION_DISABLED:
 122                         netdev_info(adapter->netdev,
 123                                     "%s Disabled\n", opt->name);
 124                         return 0;
 125                 }
 126                 break;
 127         case range_option:
 128                 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
 129                         netdev_info(adapter->netdev, "%s set to %i\n",
 130                                     opt->name, *value);
 131                         return 0;
 132                 }
 133                 break;
 134         case list_option:{
 135                         int i;
 136                         struct atl1e_opt_list *ent;
 137
 138                         for (i = 0; i < opt->arg.l.nr; i++) {
 139                                 ent = &opt->arg.l.p[i];
 140                                 if (*value == ent->i) {
 141                                         if (ent->str[0] != '\0')
 142                                                 netdev_info(adapter->netdev,
 143                                                             "%s\n", ent->str);
 144                                         return 0;
 145                                 }
 146                         }
 147                         break;
 148                 }
 149         default:
 150                 BUG();
 151         }
 152
 153         netdev_info(adapter->netdev, "Invalid %s specified (%i) %s\n",
 154                     opt->name, *value, opt->err);
 155         *value = opt->def;
 156         return -1;
 157 }
 158
 159 /**
 160  * atl1e_check_options - Range Checking for Command Line Parameters
 161  * @adapter: board private structure
 162  *
 163  * This routine checks all command line parameters for valid user
 164  * input.  If an invalid value is given, or if no user specified
 165  * value exists, a default value is used.  The final value is stored
 166  * in a variable in the adapter structure.
 167  */
 168 void atl1e_check_options(struct atl1e_adapter *adapter)
 169 {
 170         int bd = adapter->bd_number;
 171
 172         if (bd >= ATL1E_MAX_NIC) {
 173                 netdev_notice(adapter->netdev,
 174                               "no configuration for board #%i\n", bd);
 175                 netdev_notice(adapter->netdev,
 176                               "Using defaults for all values\n");
 177         }
 178
 179         {               /* Transmit Ring Size */
 180                 struct atl1e_option opt = {
 181                         .type = range_option,
 182                         .name = "Transmit Ddescription Count",
 183                         .err  = "using default of "
 184                                 __MODULE_STRING(ATL1E_DEFAULT_TX_DESC_CNT),
 185                         .def  = ATL1E_DEFAULT_TX_DESC_CNT,
 186                         .arg  = { .r = { .min = ATL1E_MIN_TX_DESC_CNT,
 187                                          .max = ATL1E_MAX_TX_DESC_CNT} }
 188                 };
 189                 int val;
 190                 if (num_tx_desc_cnt > bd) {
 191                         val = tx_desc_cnt[bd];
 192                         atl1e_validate_option(&val, &opt, adapter);
 193                         adapter->tx_ring.count = (u16) val & 0xFFFC;
 194                 } else
 195                         adapter->tx_ring.count = (u16)opt.def;
 196         }
 197
 198         {               /* Receive Memory Block Count */
 199                 struct atl1e_option opt = {
 200                         .type = range_option,
 201                         .name = "Memory size of rx buffer(KB)",
 202                         .err  = "using default of "
 203                                 __MODULE_STRING(ATL1E_DEFAULT_RX_MEM_SIZE),
 204                         .def  = ATL1E_DEFAULT_RX_MEM_SIZE,
 205                         .arg  = { .r = { .min = ATL1E_MIN_RX_MEM_SIZE,
 206                                          .max = ATL1E_MAX_RX_MEM_SIZE} }
 207                 };
 208                 int val;
 209                 if (num_rx_mem_size > bd) {
 210                         val = rx_mem_size[bd];
 211                         atl1e_validate_option(&val, &opt, adapter);
 212                         adapter->rx_ring.page_size = (u32)val * 1024;
 213                 } else {
 214                         adapter->rx_ring.page_size = (u32)opt.def * 1024;
 215                 }
 216         }
 217
 218         {               /* Interrupt Moderate Timer */
 219                 struct atl1e_option opt = {
 220                         .type = range_option,
 221                         .name = "Interrupt Moderate Timer",
 222                         .err  = "using default of "
 223                                 __MODULE_STRING(INT_MOD_DEFAULT_CNT),
 224                         .def  = INT_MOD_DEFAULT_CNT,
 225                         .arg  = { .r = { .min = INT_MOD_MIN_CNT,
 226                                          .max = INT_MOD_MAX_CNT} }
 227                 } ;
 228                 int val;
 229                 if (num_int_mod_timer > bd) {
 230                         val = int_mod_timer[bd];
 231                         atl1e_validate_option(&val, &opt, adapter);
 232                         adapter->hw.imt = (u16) val;
 233                 } else
 234                         adapter->hw.imt = (u16)(opt.def);
 235         }
 236
 237         {               /* MediaType */
 238                 struct atl1e_option opt = {
 239                         .type = range_option,
 240                         .name = "Speed/Duplex Selection",
 241                         .err  = "using default of "
 242                                 __MODULE_STRING(MEDIA_TYPE_AUTO_SENSOR),
 243                         .def  = MEDIA_TYPE_AUTO_SENSOR,
 244                         .arg  = { .r = { .min = MEDIA_TYPE_AUTO_SENSOR,
 245                                          .max = MEDIA_TYPE_10M_HALF} }
 246                 } ;
 247                 int val;
 248                 if (num_media_type > bd) {
 249                         val = media_type[bd];
 250                         atl1e_validate_option(&val, &opt, adapter);
 251                         adapter->hw.media_type = (u16) val;
 252                 } else
 253                         adapter->hw.media_type = (u16)(opt.def);
 254
 255         }
 256 }