linux/drivers/net/atl1e/atl1e_param.c
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   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
  57ATL1E_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 */
  68ATL1E_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
  81ATL1E_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
  92ATL1E_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
 102struct 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
 119static int __devinit atl1e_validate_option(int *value, struct atl1e_option *opt, struct pci_dev *pdev)
 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                        dev_info(&pdev->dev, "%s Enabled\n", opt->name);
 131                        return 0;
 132                case OPTION_DISABLED:
 133                        dev_info(&pdev->dev, "%s Disabled\n", opt->name);
 134                        return 0;
 135                }
 136                break;
 137        case range_option:
 138                if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
 139                        dev_info(&pdev->dev, "%s set to %i\n", opt->name, *value);
 140                        return 0;
 141                }
 142                break;
 143        case list_option:{
 144                        int i;
 145                        struct atl1e_opt_list *ent;
 146
 147                        for (i = 0; i < opt->arg.l.nr; i++) {
 148                                ent = &opt->arg.l.p[i];
 149                                if (*value == ent->i) {
 150                                        if (ent->str[0] != '\0')
 151                                                dev_info(&pdev->dev, "%s\n",
 152                                                        ent->str);
 153                                        return 0;
 154                                }
 155                        }
 156                        break;
 157                }
 158        default:
 159                BUG();
 160        }
 161
 162        dev_info(&pdev->dev, "Invalid %s specified (%i) %s\n",
 163                        opt->name, *value, opt->err);
 164        *value = opt->def;
 165        return -1;
 166}
 167
 168/*
 169 * atl1e_check_options - Range Checking for Command Line Parameters
 170 * @adapter: board private structure
 171 *
 172 * This routine checks all command line parameters for valid user
 173 * input.  If an invalid value is given, or if no user specified
 174 * value exists, a default value is used.  The final value is stored
 175 * in a variable in the adapter structure.
 176 */
 177void __devinit atl1e_check_options(struct atl1e_adapter *adapter)
 178{
 179        struct pci_dev *pdev = adapter->pdev;
 180        int bd = adapter->bd_number;
 181        if (bd >= ATL1E_MAX_NIC) {
 182                dev_notice(&pdev->dev, "no configuration for board #%i\n", bd);
 183                dev_notice(&pdev->dev, "Using defaults for all values\n");
 184        }
 185
 186        {               /* Transmit Ring Size */
 187                struct atl1e_option opt = {
 188                        .type = range_option,
 189                        .name = "Transmit Ddescription Count",
 190                        .err  = "using default of "
 191                                __MODULE_STRING(ATL1E_DEFAULT_TX_DESC_CNT),
 192                        .def  = ATL1E_DEFAULT_TX_DESC_CNT,
 193                        .arg  = { .r = { .min = ATL1E_MIN_TX_DESC_CNT,
 194                                         .max = ATL1E_MAX_TX_DESC_CNT} }
 195                };
 196                int val;
 197                if (num_tx_desc_cnt > bd) {
 198                        val = tx_desc_cnt[bd];
 199                        atl1e_validate_option(&val, &opt, pdev);
 200                        adapter->tx_ring.count = (u16) val & 0xFFFC;
 201                } else
 202                        adapter->tx_ring.count = (u16)opt.def;
 203        }
 204
 205        {               /* Receive Memory Block Count */
 206                struct atl1e_option opt = {
 207                        .type = range_option,
 208                        .name = "Memory size of rx buffer(KB)",
 209                        .err  = "using default of "
 210                                __MODULE_STRING(ATL1E_DEFAULT_RX_MEM_SIZE),
 211                        .def  = ATL1E_DEFAULT_RX_MEM_SIZE,
 212                        .arg  = { .r = { .min = ATL1E_MIN_RX_MEM_SIZE,
 213                                         .max = ATL1E_MAX_RX_MEM_SIZE} }
 214                };
 215                int val;
 216                if (num_rx_mem_size > bd) {
 217                        val = rx_mem_size[bd];
 218                        atl1e_validate_option(&val, &opt, pdev);
 219                        adapter->rx_ring.page_size = (u32)val * 1024;
 220                } else {
 221                        adapter->rx_ring.page_size = (u32)opt.def * 1024;
 222                }
 223        }
 224
 225        {               /* Interrupt Moderate Timer */
 226                struct atl1e_option opt = {
 227                        .type = range_option,
 228                        .name = "Interrupt Moderate Timer",
 229                        .err  = "using default of "
 230                                __MODULE_STRING(INT_MOD_DEFAULT_CNT),
 231                        .def  = INT_MOD_DEFAULT_CNT,
 232                        .arg  = { .r = { .min = INT_MOD_MIN_CNT,
 233                                         .max = INT_MOD_MAX_CNT} }
 234                } ;
 235                int val;
 236                if (num_int_mod_timer > bd) {
 237                        val = int_mod_timer[bd];
 238                        atl1e_validate_option(&val, &opt, pdev);
 239                        adapter->hw.imt = (u16) val;
 240                } else
 241                        adapter->hw.imt = (u16)(opt.def);
 242        }
 243
 244        {               /* MediaType */
 245                struct atl1e_option opt = {
 246                        .type = range_option,
 247                        .name = "Speed/Duplex Selection",
 248                        .err  = "using default of "
 249                                __MODULE_STRING(MEDIA_TYPE_AUTO_SENSOR),
 250                        .def  = MEDIA_TYPE_AUTO_SENSOR,
 251                        .arg  = { .r = { .min = MEDIA_TYPE_AUTO_SENSOR,
 252                                         .max = MEDIA_TYPE_10M_HALF} }
 253                } ;
 254                int val;
 255                if (num_media_type > bd) {
 256                        val = media_type[bd];
 257                        atl1e_validate_option(&val, &opt, pdev);
 258                        adapter->hw.media_type = (u16) val;
 259                } else
 260                        adapter->hw.media_type = (u16)(opt.def);
 261
 262        }
 263}
 264