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 } 269