release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/net/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 __devinitdata 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 __devinit atl1e_validate_option(int *value, struct atl1e_option *opt, struct atl1e_adapter *adapter)
 120 {
 121         if (*value == OPTION_UNSET) {
 122                 *value = opt->def;
 123                 return 0;
 124         }
 125
 126         switch (opt->type) {
 127         case enable_option:
 128                 switch (*value) {
 129                 case OPTION_ENABLED:
 130                         netdev_info(adapter->netdev,
 131                                     "%s Enabled\n", opt->name);
 132                         return 0;
 133                 case OPTION_DISABLED:
 134                         netdev_info(adapter->netdev,
 135                                     "%s Disabled\n", opt->name);
 136                         return 0;
 137                 }
 138                 break;
 139         case range_option:
 140                 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
 141                         netdev_info(adapter->netdev, "%s set to %i\n",
 142                                     opt->name, *value);
 143                         return 0;
 144                 }
 145                 break;
 146         case list_option:{
 147                         int i;
 148                         struct atl1e_opt_list *ent;
 149
 150                         for (i = 0; i < opt->arg.l.nr; i++) {
 151                                 ent = &opt->arg.l.p[i];
 152                                 if (*value == ent->i) {
 153                                         if (ent->str[0] != '\0')
 154                                                 netdev_info(adapter->netdev,
 155                                                             "%s\n", ent->str);
 156                                         return 0;
 157                                 }
 158                         }
 159                         break;
 160                 }
 161         default:
 162                 BUG();
 163         }
 164
 165         netdev_info(adapter->netdev, "Invalid %s specified (%i) %s\n",
 166                     opt->name, *value, opt->err);
 167         *value = opt->def;
 168         return -1;
 169 }
 170
 171 /*
 172  * atl1e_check_options - Range Checking for Command Line Parameters
 173  * @adapter: board private structure
 174  *
 175  * This routine checks all command line parameters for valid user
 176  * input.  If an invalid value is given, or if no user specified
 177  * value exists, a default value is used.  The final value is stored
 178  * in a variable in the adapter structure.
 179  */
 180 void __devinit atl1e_check_options(struct atl1e_adapter *adapter)
 181 {
 182         int bd = adapter->bd_number;
 183
 184         if (bd >= ATL1E_MAX_NIC) {
 185                 netdev_notice(adapter->netdev,
 186                               "no configuration for board #%i\n", bd);
 187                 netdev_notice(adapter->netdev,
 188                               "Using defaults for all values\n");
 189         }
 190
 191         {               /* Transmit Ring Size */
 192                 struct atl1e_option opt = {
 193                         .type = range_option,
 194                         .name = "Transmit Ddescription Count",
 195                         .err  = "using default of "
 196                                 __MODULE_STRING(ATL1E_DEFAULT_TX_DESC_CNT),
 197                         .def  = ATL1E_DEFAULT_TX_DESC_CNT,
 198                         .arg  = { .r = { .min = ATL1E_MIN_TX_DESC_CNT,
 199                                          .max = ATL1E_MAX_TX_DESC_CNT} }
 200                 };
 201                 int val;
 202                 if (num_tx_desc_cnt > bd) {
 203                         val = tx_desc_cnt[bd];
 204                         atl1e_validate_option(&val, &opt, adapter);
 205                         adapter->tx_ring.count = (u16) val & 0xFFFC;
 206                 } else
 207                         adapter->tx_ring.count = (u16)opt.def;
 208         }
 209
 210         {               /* Receive Memory Block Count */
 211                 struct atl1e_option opt = {
 212                         .type = range_option,
 213                         .name = "Memory size of rx buffer(KB)",
 214                         .err  = "using default of "
 215                                 __MODULE_STRING(ATL1E_DEFAULT_RX_MEM_SIZE),
 216                         .def  = ATL1E_DEFAULT_RX_MEM_SIZE,
 217                         .arg  = { .r = { .min = ATL1E_MIN_RX_MEM_SIZE,
 218                                          .max = ATL1E_MAX_RX_MEM_SIZE} }
 219                 };
 220                 int val;
 221                 if (num_rx_mem_size > bd) {
 222                         val = rx_mem_size[bd];
 223                         atl1e_validate_option(&val, &opt, adapter);
 224                         adapter->rx_ring.page_size = (u32)val * 1024;
 225                 } else {
 226                         adapter->rx_ring.page_size = (u32)opt.def * 1024;
 227                 }
 228         }
 229
 230         {               /* Interrupt Moderate Timer */
 231                 struct atl1e_option opt = {
 232                         .type = range_option,
 233                         .name = "Interrupt Moderate Timer",
 234                         .err  = "using default of "
 235                                 __MODULE_STRING(INT_MOD_DEFAULT_CNT),
 236                         .def  = INT_MOD_DEFAULT_CNT,
 237                         .arg  = { .r = { .min = INT_MOD_MIN_CNT,
 238                                          .max = INT_MOD_MAX_CNT} }
 239                 } ;
 240                 int val;
 241                 if (num_int_mod_timer > bd) {
 242                         val = int_mod_timer[bd];
 243                         atl1e_validate_option(&val, &opt, adapter);
 244                         adapter->hw.imt = (u16) val;
 245                 } else
 246                         adapter->hw.imt = (u16)(opt.def);
 247         }
 248
 249         {               /* MediaType */
 250                 struct atl1e_option opt = {
 251                         .type = range_option,
 252                         .name = "Speed/Duplex Selection",
 253                         .err  = "using default of "
 254                                 __MODULE_STRING(MEDIA_TYPE_AUTO_SENSOR),
 255                         .def  = MEDIA_TYPE_AUTO_SENSOR,
 256                         .arg  = { .r = { .min = MEDIA_TYPE_AUTO_SENSOR,
 257                                          .max = MEDIA_TYPE_10M_HALF} }
 258                 } ;
 259                 int val;
 260                 if (num_media_type > bd) {
 261                         val = media_type[bd];
 262                         atl1e_validate_option(&val, &opt, adapter);
 263                         adapter->hw.media_type = (u16) val;
 264                 } else
 265                         adapter->hw.media_type = (u16)(opt.def);
 266
 267         }
 268 }