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

   1 /*
   2  * Copyright(c) 2007 Atheros Corporation. All rights reserved.
   3  *
   4  * Derived from Intel e1000 driver
   5  * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the Free
   9  * Software Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc., 59
  19  * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  */
  21
  22 #include <linux/netdevice.h>
  23
  24 #include "atl1e.h"
  25
  26 /* This is the only thing that needs to be changed to adjust the
  27  * maximum number of ports that the driver can manage.
  28  */
  29
  30 #define ATL1E_MAX_NIC 32
  31
  32 #define OPTION_UNSET    -1
  33 #define OPTION_DISABLED 0
  34 #define OPTION_ENABLED  1
  35
  36 /* All parameters are treated the same, as an integer array of values.
  37  * This macro just reduces the need to repeat the same declaration code
  38  * over and over (plus this helps to avoid typo bugs).
  39  */
  40 #define ATL1E_PARAM_INIT { [0 ... ATL1E_MAX_NIC] = OPTION_UNSET }
  41
  42 #define ATL1E_PARAM(x, desc) \
  43         static int x[ATL1E_MAX_NIC + 1] = ATL1E_PARAM_INIT; \
  44         static unsigned int num_##x; \
  45         module_param_array_named(x, x, int, &num_##x, 0); \
  46         MODULE_PARM_DESC(x, desc);
  47
  48 /* Transmit Memory count
  49  *
  50  * Valid Range: 64-2048
  51  *
  52  * Default Value: 128
  53  */
  54 #define ATL1E_MIN_TX_DESC_CNT           32
  55 #define ATL1E_MAX_TX_DESC_CNT           1020
  56 #define ATL1E_DEFAULT_TX_DESC_CNT       128
  57 ATL1E_PARAM(tx_desc_cnt, "Transmit description count");
  58
  59 /* Receive Memory Block Count
  60  *
  61  * Valid Range: 16-512
  62  *
  63  * Default Value: 128
  64  */
  65 #define ATL1E_MIN_RX_MEM_SIZE           8    /* 8KB   */
  66 #define ATL1E_MAX_RX_MEM_SIZE           1024 /* 1MB   */
  67 #define ATL1E_DEFAULT_RX_MEM_SIZE       256  /* 128KB */
  68 ATL1E_PARAM(rx_mem_size, "memory size of rx buffer(KB)");
  69
  70 /* User Specified MediaType Override
  71  *
  72  * Valid Range: 0-5
  73  *  - 0    - auto-negotiate at all supported speeds
  74  *  - 1    - only link at 100Mbps Full Duplex
  75  *  - 2    - only link at 100Mbps Half Duplex
  76  *  - 3    - only link at 10Mbps Full Duplex
  77  *  - 4    - only link at 10Mbps Half Duplex
  78  * Default Value: 0
  79  */
  80
  81 ATL1E_PARAM(media_type, "MediaType Select");
  82
  83 /* Interrupt Moderate Timer in units of 2 us
  84  *
  85  * Valid Range: 10-65535
  86  *
  87  * Default Value: 45000(90ms)
  88  */
  89 #define INT_MOD_DEFAULT_CNT             100 /* 200us */
  90 #define INT_MOD_MAX_CNT                 65000
  91 #define INT_MOD_MIN_CNT                 50
  92 ATL1E_PARAM(int_mod_timer, "Interrupt Moderator Timer");
  93
  94 #define AUTONEG_ADV_DEFAULT  0x2F
  95 #define AUTONEG_ADV_MASK     0x2F
  96 #define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
  97
  98 #define FLASH_VENDOR_DEFAULT    0
  99 #define FLASH_VENDOR_MIN        0
 100 #define FLASH_VENDOR_MAX        2
 101
 102 struct atl1e_option {
 103         enum { enable_option, range_option, list_option } type;
 104         char *name;
 105         char *err;
 106         int  def;
 107         union {
 108                 struct { /* range_option info */
 109                         int min;
 110                         int max;
 111                 } r;
 112                 struct { /* list_option info */
 113                         int nr;
 114                         struct atl1e_opt_list { int i; char *str; } *p;
 115                 } l;
 116         } arg;
 117 };
 118
 119 static int atl1e_validate_option(int *value, struct atl1e_option *opt,
 120                                  struct atl1e_adapter *adapter)
 121 {
 122         if (*value == OPTION_UNSET) {
 123                 *value = opt->def;
 124                 return 0;
 125         }
 126
 127         switch (opt->type) {
 128         case enable_option:
 129                 switch (*value) {
 130                 case OPTION_ENABLED:
 131                         netdev_info(adapter->netdev,
 132                                     "%s Enabled\n", opt->name);
 133                         return 0;
 134                 case OPTION_DISABLED:
 135                         netdev_info(adapter->netdev,
 136                                     "%s Disabled\n", opt->name);
 137                         return 0;
 138                 }
 139                 break;
 140         case range_option:
 141                 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
 142                         netdev_info(adapter->netdev, "%s set to %i\n",
 143                                     opt->name, *value);
 144                         return 0;
 145                 }
 146                 break;
 147         case list_option:{
 148                         int i;
 149                         struct atl1e_opt_list *ent;
 150
 151                         for (i = 0; i < opt->arg.l.nr; i++) {
 152                                 ent = &opt->arg.l.p[i];
 153                                 if (*value == ent->i) {
 154                                         if (ent->str[0] != '\0')
 155                                                 netdev_info(adapter->netdev,
 156                                                             "%s\n", ent->str);
 157                                         return 0;
 158                                 }
 159                         }
 160                         break;
 161                 }
 162         default:
 163                 BUG();
 164         }
 165
 166         netdev_info(adapter->netdev, "Invalid %s specified (%i) %s\n",
 167                     opt->name, *value, opt->err);
 168         *value = opt->def;
 169         return -1;
 170 }
 171
 172 /**
 173  * atl1e_check_options - Range Checking for Command Line Parameters
 174  * @adapter: board private structure
 175  *
 176  * This routine checks all command line parameters for valid user
 177  * input.  If an invalid value is given, or if no user specified
 178  * value exists, a default value is used.  The final value is stored
 179  * in a variable in the adapter structure.
 180  */
 181 void atl1e_check_options(struct atl1e_adapter *adapter)
 182 {
 183         int bd = adapter->bd_number;
 184
 185         if (bd >= ATL1E_MAX_NIC) {
 186                 netdev_notice(adapter->netdev,
 187                               "no configuration for board #%i\n", bd);
 188                 netdev_notice(adapter->netdev,
 189                               "Using defaults for all values\n");
 190         }
 191
 192         {               /* Transmit Ring Size */
 193                 struct atl1e_option opt = {
 194                         .type = range_option,
 195                         .name = "Transmit Ddescription Count",
 196                         .err  = "using default of "
 197                                 __MODULE_STRING(ATL1E_DEFAULT_TX_DESC_CNT),
 198                         .def  = ATL1E_DEFAULT_TX_DESC_CNT,
 199                         .arg  = { .r = { .min = ATL1E_MIN_TX_DESC_CNT,
 200                                          .max = ATL1E_MAX_TX_DESC_CNT} }
 201                 };
 202                 int val;
 203                 if (num_tx_desc_cnt > bd) {
 204                         val = tx_desc_cnt[bd];
 205                         atl1e_validate_option(&val, &opt, adapter);
 206                         adapter->tx_ring.count = (u16) val & 0xFFFC;
 207                 } else
 208                         adapter->tx_ring.count = (u16)opt.def;
 209         }
 210
 211         {               /* Receive Memory Block Count */
 212                 struct atl1e_option opt = {
 213                         .type = range_option,
 214                         .name = "Memory size of rx buffer(KB)",
 215                         .err  = "using default of "
 216                                 __MODULE_STRING(ATL1E_DEFAULT_RX_MEM_SIZE),
 217                         .def  = ATL1E_DEFAULT_RX_MEM_SIZE,
 218                         .arg  = { .r = { .min = ATL1E_MIN_RX_MEM_SIZE,
 219                                          .max = ATL1E_MAX_RX_MEM_SIZE} }
 220                 };
 221                 int val;
 222                 if (num_rx_mem_size > bd) {
 223                         val = rx_mem_size[bd];
 224                         atl1e_validate_option(&val, &opt, adapter);
 225                         adapter->rx_ring.page_size = (u32)val * 1024;
 226                 } else {
 227                         adapter->rx_ring.page_size = (u32)opt.def * 1024;
 228                 }
 229         }
 230
 231         {               /* Interrupt Moderate Timer */
 232                 struct atl1e_option opt = {
 233                         .type = range_option,
 234                         .name = "Interrupt Moderate Timer",
 235                         .err  = "using default of "
 236                                 __MODULE_STRING(INT_MOD_DEFAULT_CNT),
 237                         .def  = INT_MOD_DEFAULT_CNT,
 238                         .arg  = { .r = { .min = INT_MOD_MIN_CNT,
 239                                          .max = INT_MOD_MAX_CNT} }
 240                 } ;
 241                 int val;
 242                 if (num_int_mod_timer > bd) {
 243                         val = int_mod_timer[bd];
 244                         atl1e_validate_option(&val, &opt, adapter);
 245                         adapter->hw.imt = (u16) val;
 246                 } else
 247                         adapter->hw.imt = (u16)(opt.def);
 248         }
 249
 250         {               /* MediaType */
 251                 struct atl1e_option opt = {
 252                         .type = range_option,
 253                         .name = "Speed/Duplex Selection",
 254                         .err  = "using default of "
 255                                 __MODULE_STRING(MEDIA_TYPE_AUTO_SENSOR),
 256                         .def  = MEDIA_TYPE_AUTO_SENSOR,
 257                         .arg  = { .r = { .min = MEDIA_TYPE_AUTO_SENSOR,
 258                                          .max = MEDIA_TYPE_10M_HALF} }
 259                 } ;
 260                 int val;
 261                 if (num_media_type > bd) {
 262                         val = media_type[bd];
 263                         atl1e_validate_option(&val, &opt, adapter);
 264                         adapter->hw.media_type = (u16) val;
 265                 } else
 266                         adapter->hw.media_type = (u16)(opt.def);
 267
 268         }
 269 }