drivers/net/ethernet/intel/e1000/e1000_param.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 1999 - 2006 Intel Corporation. */
   3
   4 #include "e1000.h"
   5
   6 /* This is the only thing that needs to be changed to adjust the
   7  * maximum number of ports that the driver can manage.
   8  */
   9
  10 #define E1000_MAX_NIC 32
  11
  12 #define OPTION_UNSET   -1
  13 #define OPTION_DISABLED 0
  14 #define OPTION_ENABLED  1
  15
  16 /* All parameters are treated the same, as an integer array of values.
  17  * This macro just reduces the need to repeat the same declaration code
  18  * over and over (plus this helps to avoid typo bugs).
  19  */
  20
  21 #define E1000_PARAM_INIT { [0 ... E1000_MAX_NIC] = OPTION_UNSET }
  22 #define E1000_PARAM(X, desc) \
  23         static int X[E1000_MAX_NIC+1] = E1000_PARAM_INIT; \
  24         static unsigned int num_##X; \
  25         module_param_array_named(X, X, int, &num_##X, 0); \
  26         MODULE_PARM_DESC(X, desc);
  27
  28 /* Transmit Descriptor Count
  29  *
  30  * Valid Range: 80-256 for 82542 and 82543 gigabit ethernet controllers
  31  * Valid Range: 80-4096 for 82544 and newer
  32  *
  33  * Default Value: 256
  34  */
  35 E1000_PARAM(TxDescriptors, "Number of transmit descriptors");
  36
  37 /* Receive Descriptor Count
  38  *
  39  * Valid Range: 80-256 for 82542 and 82543 gigabit ethernet controllers
  40  * Valid Range: 80-4096 for 82544 and newer
  41  *
  42  * Default Value: 256
  43  */
  44 E1000_PARAM(RxDescriptors, "Number of receive descriptors");
  45
  46 /* User Specified Speed Override
  47  *
  48  * Valid Range: 0, 10, 100, 1000
  49  *  - 0    - auto-negotiate at all supported speeds
  50  *  - 10   - only link at 10 Mbps
  51  *  - 100  - only link at 100 Mbps
  52  *  - 1000 - only link at 1000 Mbps
  53  *
  54  * Default Value: 0
  55  */
  56 E1000_PARAM(Speed, "Speed setting");
  57
  58 /* User Specified Duplex Override
  59  *
  60  * Valid Range: 0-2
  61  *  - 0 - auto-negotiate for duplex
  62  *  - 1 - only link at half duplex
  63  *  - 2 - only link at full duplex
  64  *
  65  * Default Value: 0
  66  */
  67 E1000_PARAM(Duplex, "Duplex setting");
  68
  69 /* Auto-negotiation Advertisement Override
  70  *
  71  * Valid Range: 0x01-0x0F, 0x20-0x2F (copper); 0x20 (fiber)
  72  *
  73  * The AutoNeg value is a bit mask describing which speed and duplex
  74  * combinations should be advertised during auto-negotiation.
  75  * The supported speed and duplex modes are listed below
  76  *
  77  * Bit           7     6     5      4      3     2     1      0
  78  * Speed (Mbps)  N/A   N/A   1000   N/A    100   100   10     10
  79  * Duplex                    Full          Full  Half  Full   Half
  80  *
  81  * Default Value: 0x2F (copper); 0x20 (fiber)
  82  */
  83 E1000_PARAM(AutoNeg, "Advertised auto-negotiation setting");
  84 #define AUTONEG_ADV_DEFAULT  0x2F
  85
  86 /* User Specified Flow Control Override
  87  *
  88  * Valid Range: 0-3
  89  *  - 0 - No Flow Control
  90  *  - 1 - Rx only, respond to PAUSE frames but do not generate them
  91  *  - 2 - Tx only, generate PAUSE frames but ignore them on receive
  92  *  - 3 - Full Flow Control Support
  93  *
  94  * Default Value: Read flow control settings from the EEPROM
  95  */
  96 E1000_PARAM(FlowControl, "Flow Control setting");
  97
  98 /* XsumRX - Receive Checksum Offload Enable/Disable
  99  *
 100  * Valid Range: 0, 1
 101  *  - 0 - disables all checksum offload
 102  *  - 1 - enables receive IP/TCP/UDP checksum offload
 103  *        on 82543 and newer -based NICs
 104  *
 105  * Default Value: 1
 106  */
 107 E1000_PARAM(XsumRX, "Disable or enable Receive Checksum offload");
 108
 109 /* Transmit Interrupt Delay in units of 1.024 microseconds
 110  *  Tx interrupt delay needs to typically be set to something non zero
 111  *
 112  * Valid Range: 0-65535
 113  */
 114 E1000_PARAM(TxIntDelay, "Transmit Interrupt Delay");
 115 #define DEFAULT_TIDV                   8
 116 #define MAX_TXDELAY               0xFFFF
 117 #define MIN_TXDELAY                    0
 118
 119 /* Transmit Absolute Interrupt Delay in units of 1.024 microseconds
 120  *
 121  * Valid Range: 0-65535
 122  */
 123 E1000_PARAM(TxAbsIntDelay, "Transmit Absolute Interrupt Delay");
 124 #define DEFAULT_TADV                  32
 125 #define MAX_TXABSDELAY            0xFFFF
 126 #define MIN_TXABSDELAY                 0
 127
 128 /* Receive Interrupt Delay in units of 1.024 microseconds
 129  *   hardware will likely hang if you set this to anything but zero.
 130  *
 131  * Valid Range: 0-65535
 132  */
 133 E1000_PARAM(RxIntDelay, "Receive Interrupt Delay");
 134 #define DEFAULT_RDTR                   0
 135 #define MAX_RXDELAY               0xFFFF
 136 #define MIN_RXDELAY                    0
 137
 138 /* Receive Absolute Interrupt Delay in units of 1.024 microseconds
 139  *
 140  * Valid Range: 0-65535
 141  */
 142 E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay");
 143 #define DEFAULT_RADV                   8
 144 #define MAX_RXABSDELAY            0xFFFF
 145 #define MIN_RXABSDELAY                 0
 146
 147 /* Interrupt Throttle Rate (interrupts/sec)
 148  *
 149  * Valid Range: 100-100000 (0=off, 1=dynamic, 3=dynamic conservative)
 150  */
 151 E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate");
 152 #define DEFAULT_ITR                    3
 153 #define MAX_ITR                   100000
 154 #define MIN_ITR                      100
 155
 156 /* Enable Smart Power Down of the PHY
 157  *
 158  * Valid Range: 0, 1
 159  *
 160  * Default Value: 0 (disabled)
 161  */
 162 E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down");
 163
 164 struct e1000_option {
 165         enum { enable_option, range_option, list_option } type;
 166         const char *name;
 167         const char *err;
 168         int def;
 169         union {
 170                 struct { /* range_option info */
 171                         int min;
 172                         int max;
 173                 } r;
 174                 struct { /* list_option info */
 175                         int nr;
 176                         const struct e1000_opt_list { int i; char *str; } *p;
 177                 } l;
 178         } arg;
 179 };
 180
 181 static int e1000_validate_option(unsigned int *value,
 182                                  const struct e1000_option *opt,
 183                                  struct e1000_adapter *adapter)
 184 {
 185         if (*value == OPTION_UNSET) {
 186                 *value = opt->def;
 187                 return 0;
 188         }
 189
 190         switch (opt->type) {
 191         case enable_option:
 192                 switch (*value) {
 193                 case OPTION_ENABLED:
 194                         e_dev_info("%s Enabled\n", opt->name);
 195                         return 0;
 196                 case OPTION_DISABLED:
 197                         e_dev_info("%s Disabled\n", opt->name);
 198                         return 0;
 199                 }
 200                 break;
 201         case range_option:
 202                 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
 203                         e_dev_info("%s set to %i\n", opt->name, *value);
 204                         return 0;
 205                 }
 206                 break;
 207         case list_option: {
 208                 int i;
 209                 const struct e1000_opt_list *ent;
 210
 211                 for (i = 0; i < opt->arg.l.nr; i++) {
 212                         ent = &opt->arg.l.p[i];
 213                         if (*value == ent->i) {
 214                                 if (ent->str[0] != '\0')
 215                                         e_dev_info("%s\n", ent->str);
 216                                 return 0;
 217                         }
 218                 }
 219         }
 220                 break;
 221         default:
 222                 BUG();
 223         }
 224
 225         e_dev_info("Invalid %s value specified (%i) %s\n",
 226                opt->name, *value, opt->err);
 227         *value = opt->def;
 228         return -1;
 229 }
 230
 231 static void e1000_check_fiber_options(struct e1000_adapter *adapter);
 232 static void e1000_check_copper_options(struct e1000_adapter *adapter);
 233
 234 /**
 235  * e1000_check_options - Range Checking for Command Line Parameters
 236  * @adapter: board private structure
 237  *
 238  * This routine checks all command line parameters for valid user
 239  * input.  If an invalid value is given, or if no user specified
 240  * value exists, a default value is used.  The final value is stored
 241  * in a variable in the adapter structure.
 242  **/
 243 void e1000_check_options(struct e1000_adapter *adapter)
 244 {
 245         struct e1000_option opt;
 246         int bd = adapter->bd_number;
 247
 248         if (bd >= E1000_MAX_NIC) {
 249                 e_dev_warn("Warning: no configuration for board #%i "
 250                            "using defaults for all values\n", bd);
 251         }
 252
 253         { /* Transmit Descriptor Count */
 254                 struct e1000_tx_ring *tx_ring = adapter->tx_ring;
 255                 int i;
 256                 e1000_mac_type mac_type = adapter->hw.mac_type;
 257
 258                 opt = (struct e1000_option) {
 259                         .type = range_option,
 260                         .name = "Transmit Descriptors",
 261                         .err  = "using default of "
 262                                 __MODULE_STRING(E1000_DEFAULT_TXD),
 263                         .def  = E1000_DEFAULT_TXD,
 264                         .arg  = { .r = {
 265                                 .min = E1000_MIN_TXD,
 266                                 .max = mac_type < e1000_82544 ? E1000_MAX_TXD : E1000_MAX_82544_TXD
 267                                 }}
 268                 };
 269
 270                 if (num_TxDescriptors > bd) {
 271                         tx_ring->count = TxDescriptors[bd];
 272                         e1000_validate_option(&tx_ring->count, &opt, adapter);
 273                         tx_ring->count = ALIGN(tx_ring->count,
 274                                                 REQ_TX_DESCRIPTOR_MULTIPLE);
 275                 } else {
 276                         tx_ring->count = opt.def;
 277                 }
 278                 for (i = 0; i < adapter->num_tx_queues; i++)
 279                         tx_ring[i].count = tx_ring->count;
 280         }
 281         { /* Receive Descriptor Count */
 282                 struct e1000_rx_ring *rx_ring = adapter->rx_ring;
 283                 int i;
 284                 e1000_mac_type mac_type = adapter->hw.mac_type;
 285
 286                 opt = (struct e1000_option) {
 287                         .type = range_option,
 288                         .name = "Receive Descriptors",
 289                         .err  = "using default of "
 290                                 __MODULE_STRING(E1000_DEFAULT_RXD),
 291                         .def  = E1000_DEFAULT_RXD,
 292                         .arg  = { .r = {
 293                                 .min = E1000_MIN_RXD,
 294                                 .max = mac_type < e1000_82544 ? E1000_MAX_RXD :
 295                                        E1000_MAX_82544_RXD
 296                         }}
 297                 };
 298
 299                 if (num_RxDescriptors > bd) {
 300                         rx_ring->count = RxDescriptors[bd];
 301                         e1000_validate_option(&rx_ring->count, &opt, adapter);
 302                         rx_ring->count = ALIGN(rx_ring->count,
 303                                                 REQ_RX_DESCRIPTOR_MULTIPLE);
 304                 } else {
 305                         rx_ring->count = opt.def;
 306                 }
 307                 for (i = 0; i < adapter->num_rx_queues; i++)
 308                         rx_ring[i].count = rx_ring->count;
 309         }
 310         { /* Checksum Offload Enable/Disable */
 311                 opt = (struct e1000_option) {
 312                         .type = enable_option,
 313                         .name = "Checksum Offload",
 314                         .err  = "defaulting to Enabled",
 315                         .def  = OPTION_ENABLED
 316                 };
 317
 318                 if (num_XsumRX > bd) {
 319                         unsigned int rx_csum = XsumRX[bd];
 320                         e1000_validate_option(&rx_csum, &opt, adapter);
 321                         adapter->rx_csum = rx_csum;
 322                 } else {
 323                         adapter->rx_csum = opt.def;
 324                 }
 325         }
 326         { /* Flow Control */
 327
 328                 static const struct e1000_opt_list fc_list[] = {
 329                        { E1000_FC_NONE, "Flow Control Disabled" },
 330                        { E1000_FC_RX_PAUSE, "Flow Control Receive Only" },
 331                        { E1000_FC_TX_PAUSE, "Flow Control Transmit Only" },
 332                        { E1000_FC_FULL, "Flow Control Enabled" },
 333                        { E1000_FC_DEFAULT, "Flow Control Hardware Default" }
 334                 };
 335
 336                 opt = (struct e1000_option) {
 337                         .type = list_option,
 338                         .name = "Flow Control",
 339                         .err  = "reading default settings from EEPROM",
 340                         .def  = E1000_FC_DEFAULT,
 341                         .arg  = { .l = { .nr = ARRAY_SIZE(fc_list),
 342                                          .p = fc_list }}
 343                 };
 344
 345                 if (num_FlowControl > bd) {
 346                         unsigned int fc = FlowControl[bd];
 347                         e1000_validate_option(&fc, &opt, adapter);
 348                         adapter->hw.fc = adapter->hw.original_fc = fc;
 349                 } else {
 350                         adapter->hw.fc = adapter->hw.original_fc = opt.def;
 351                 }
 352         }
 353         { /* Transmit Interrupt Delay */
 354                 opt = (struct e1000_option) {
 355                         .type = range_option,
 356                         .name = "Transmit Interrupt Delay",
 357                         .err  = "using default of " __MODULE_STRING(DEFAULT_TIDV),
 358                         .def  = DEFAULT_TIDV,
 359                         .arg  = { .r = { .min = MIN_TXDELAY,
 360                                          .max = MAX_TXDELAY }}
 361                 };
 362
 363                 if (num_TxIntDelay > bd) {
 364                         adapter->tx_int_delay = TxIntDelay[bd];
 365                         e1000_validate_option(&adapter->tx_int_delay, &opt,
 366                                               adapter);
 367                 } else {
 368                         adapter->tx_int_delay = opt.def;
 369                 }
 370         }
 371         { /* Transmit Absolute Interrupt Delay */
 372                 opt = (struct e1000_option) {
 373                         .type = range_option,
 374                         .name = "Transmit Absolute Interrupt Delay",
 375                         .err  = "using default of " __MODULE_STRING(DEFAULT_TADV),
 376                         .def  = DEFAULT_TADV,
 377                         .arg  = { .r = { .min = MIN_TXABSDELAY,
 378                                          .max = MAX_TXABSDELAY }}
 379                 };
 380
 381                 if (num_TxAbsIntDelay > bd) {
 382                         adapter->tx_abs_int_delay = TxAbsIntDelay[bd];
 383                         e1000_validate_option(&adapter->tx_abs_int_delay, &opt,
 384                                               adapter);
 385                 } else {
 386                         adapter->tx_abs_int_delay = opt.def;
 387                 }
 388         }
 389         { /* Receive Interrupt Delay */
 390                 opt = (struct e1000_option) {
 391                         .type = range_option,
 392                         .name = "Receive Interrupt Delay",
 393                         .err  = "using default of " __MODULE_STRING(DEFAULT_RDTR),
 394                         .def  = DEFAULT_RDTR,
 395                         .arg  = { .r = { .min = MIN_RXDELAY,
 396                                          .max = MAX_RXDELAY }}
 397                 };
 398
 399                 if (num_RxIntDelay > bd) {
 400                         adapter->rx_int_delay = RxIntDelay[bd];
 401                         e1000_validate_option(&adapter->rx_int_delay, &opt,
 402                                               adapter);
 403                 } else {
 404                         adapter->rx_int_delay = opt.def;
 405                 }
 406         }
 407         { /* Receive Absolute Interrupt Delay */
 408                 opt = (struct e1000_option) {
 409                         .type = range_option,
 410                         .name = "Receive Absolute Interrupt Delay",
 411                         .err  = "using default of " __MODULE_STRING(DEFAULT_RADV),
 412                         .def  = DEFAULT_RADV,
 413                         .arg  = { .r = { .min = MIN_RXABSDELAY,
 414                                          .max = MAX_RXABSDELAY }}
 415                 };
 416
 417                 if (num_RxAbsIntDelay > bd) {
 418                         adapter->rx_abs_int_delay = RxAbsIntDelay[bd];
 419                         e1000_validate_option(&adapter->rx_abs_int_delay, &opt,
 420                                               adapter);
 421                 } else {
 422                         adapter->rx_abs_int_delay = opt.def;
 423                 }
 424         }
 425         { /* Interrupt Throttling Rate */
 426                 opt = (struct e1000_option) {
 427                         .type = range_option,
 428                         .name = "Interrupt Throttling Rate (ints/sec)",
 429                         .err  = "using default of " __MODULE_STRING(DEFAULT_ITR),
 430                         .def  = DEFAULT_ITR,
 431                         .arg  = { .r = { .min = MIN_ITR,
 432                                          .max = MAX_ITR }}
 433                 };
 434
 435                 if (num_InterruptThrottleRate > bd) {
 436                         adapter->itr = InterruptThrottleRate[bd];
 437                         switch (adapter->itr) {
 438                         case 0:
 439                                 e_dev_info("%s turned off\n", opt.name);
 440                                 break;
 441                         case 1:
 442                                 e_dev_info("%s set to dynamic mode\n",
 443                                            opt.name);
 444                                 adapter->itr_setting = adapter->itr;
 445                                 adapter->itr = 20000;
 446                                 break;
 447                         case 3:
 448                                 e_dev_info("%s set to dynamic conservative "
 449                                            "mode\n", opt.name);
 450                                 adapter->itr_setting = adapter->itr;
 451                                 adapter->itr = 20000;
 452                                 break;
 453                         case 4:
 454                                 e_dev_info("%s set to simplified "
 455                                            "(2000-8000) ints mode\n", opt.name);
 456                                 adapter->itr_setting = adapter->itr;
 457                                 break;
 458                         default:
 459                                 e1000_validate_option(&adapter->itr, &opt,
 460                                                       adapter);
 461                                 /* save the setting, because the dynamic bits
 462                                  * change itr.
 463                                  * clear the lower two bits because they are
 464                                  * used as control
 465                                  */
 466                                 adapter->itr_setting = adapter->itr & ~3;
 467                                 break;
 468                         }
 469                 } else {
 470                         adapter->itr_setting = opt.def;
 471                         adapter->itr = 20000;
 472                 }
 473         }
 474         { /* Smart Power Down */
 475                 opt = (struct e1000_option) {
 476                         .type = enable_option,
 477                         .name = "PHY Smart Power Down",
 478                         .err  = "defaulting to Disabled",
 479                         .def  = OPTION_DISABLED
 480                 };
 481
 482                 if (num_SmartPowerDownEnable > bd) {
 483                         unsigned int spd = SmartPowerDownEnable[bd];
 484                         e1000_validate_option(&spd, &opt, adapter);
 485                         adapter->smart_power_down = spd;
 486                 } else {
 487                         adapter->smart_power_down = opt.def;
 488                 }
 489         }
 490
 491         switch (adapter->hw.media_type) {
 492         case e1000_media_type_fiber:
 493         case e1000_media_type_internal_serdes:
 494                 e1000_check_fiber_options(adapter);
 495                 break;
 496         case e1000_media_type_copper:
 497                 e1000_check_copper_options(adapter);
 498                 break;
 499         default:
 500                 BUG();
 501         }
 502 }
 503
 504 /**
 505  * e1000_check_fiber_options - Range Checking for Link Options, Fiber Version
 506  * @adapter: board private structure
 507  *
 508  * Handles speed and duplex options on fiber adapters
 509  **/
 510 static void e1000_check_fiber_options(struct e1000_adapter *adapter)
 511 {
 512         int bd = adapter->bd_number;
 513         if (num_Speed > bd) {
 514                 e_dev_info("Speed not valid for fiber adapters, parameter "
 515                            "ignored\n");
 516         }
 517
 518         if (num_Duplex > bd) {
 519                 e_dev_info("Duplex not valid for fiber adapters, parameter "
 520                            "ignored\n");
 521         }
 522
 523         if ((num_AutoNeg > bd) && (AutoNeg[bd] != 0x20)) {
 524                 e_dev_info("AutoNeg other than 1000/Full is not valid for fiber"
 525                            "adapters, parameter ignored\n");
 526         }
 527 }
 528
 529 /**
 530  * e1000_check_copper_options - Range Checking for Link Options, Copper Version
 531  * @adapter: board private structure
 532  *
 533  * Handles speed and duplex options on copper adapters
 534  **/
 535 static void e1000_check_copper_options(struct e1000_adapter *adapter)
 536 {
 537         struct e1000_option opt;
 538         unsigned int speed, dplx, an;
 539         int bd = adapter->bd_number;
 540
 541         { /* Speed */
 542                 static const struct e1000_opt_list speed_list[] = {
 543                         {          0, "" },
 544                         {   SPEED_10, "" },
 545                         {  SPEED_100, "" },
 546                         { SPEED_1000, "" }};
 547
 548                 opt = (struct e1000_option) {
 549                         .type = list_option,
 550                         .name = "Speed",
 551                         .err  = "parameter ignored",
 552                         .def  = 0,
 553                         .arg  = { .l = { .nr = ARRAY_SIZE(speed_list),
 554                                          .p = speed_list }}
 555                 };
 556
 557                 if (num_Speed > bd) {
 558                         speed = Speed[bd];
 559                         e1000_validate_option(&speed, &opt, adapter);
 560                 } else {
 561                         speed = opt.def;
 562                 }
 563         }
 564         { /* Duplex */
 565                 static const struct e1000_opt_list dplx_list[] = {
 566                         {           0, "" },
 567                         { HALF_DUPLEX, "" },
 568                         { FULL_DUPLEX, "" }};
 569
 570                 opt = (struct e1000_option) {
 571                         .type = list_option,
 572                         .name = "Duplex",
 573                         .err  = "parameter ignored",
 574                         .def  = 0,
 575                         .arg  = { .l = { .nr = ARRAY_SIZE(dplx_list),
 576                                          .p = dplx_list }}
 577                 };
 578
 579                 if (num_Duplex > bd) {
 580                         dplx = Duplex[bd];
 581                         e1000_validate_option(&dplx, &opt, adapter);
 582                 } else {
 583                         dplx = opt.def;
 584                 }
 585         }
 586
 587         if ((num_AutoNeg > bd) && (speed != 0 || dplx != 0)) {
 588                 e_dev_info("AutoNeg specified along with Speed or Duplex, "
 589                            "parameter ignored\n");
 590                 adapter->hw.autoneg_advertised = AUTONEG_ADV_DEFAULT;
 591         } else { /* Autoneg */
 592                 static const struct e1000_opt_list an_list[] =
 593                         #define AA "AutoNeg advertising "
 594                         {{ 0x01, AA "10/HD" },
 595                          { 0x02, AA "10/FD" },
 596                          { 0x03, AA "10/FD, 10/HD" },
 597                          { 0x04, AA "100/HD" },
 598                          { 0x05, AA "100/HD, 10/HD" },
 599                          { 0x06, AA "100/HD, 10/FD" },
 600                          { 0x07, AA "100/HD, 10/FD, 10/HD" },
 601                          { 0x08, AA "100/FD" },
 602                          { 0x09, AA "100/FD, 10/HD" },
 603                          { 0x0a, AA "100/FD, 10/FD" },
 604                          { 0x0b, AA "100/FD, 10/FD, 10/HD" },
 605                          { 0x0c, AA "100/FD, 100/HD" },
 606                          { 0x0d, AA "100/FD, 100/HD, 10/HD" },
 607                          { 0x0e, AA "100/FD, 100/HD, 10/FD" },
 608                          { 0x0f, AA "100/FD, 100/HD, 10/FD, 10/HD" },
 609                          { 0x20, AA "1000/FD" },
 610                          { 0x21, AA "1000/FD, 10/HD" },
 611                          { 0x22, AA "1000/FD, 10/FD" },
 612                          { 0x23, AA "1000/FD, 10/FD, 10/HD" },
 613                          { 0x24, AA "1000/FD, 100/HD" },
 614                          { 0x25, AA "1000/FD, 100/HD, 10/HD" },
 615                          { 0x26, AA "1000/FD, 100/HD, 10/FD" },
 616                          { 0x27, AA "1000/FD, 100/HD, 10/FD, 10/HD" },
 617                          { 0x28, AA "1000/FD, 100/FD" },
 618                          { 0x29, AA "1000/FD, 100/FD, 10/HD" },
 619                          { 0x2a, AA "1000/FD, 100/FD, 10/FD" },
 620                          { 0x2b, AA "1000/FD, 100/FD, 10/FD, 10/HD" },
 621                          { 0x2c, AA "1000/FD, 100/FD, 100/HD" },
 622                          { 0x2d, AA "1000/FD, 100/FD, 100/HD, 10/HD" },
 623                          { 0x2e, AA "1000/FD, 100/FD, 100/HD, 10/FD" },
 624                          { 0x2f, AA "1000/FD, 100/FD, 100/HD, 10/FD, 10/HD" }};
 625
 626                 opt = (struct e1000_option) {
 627                         .type = list_option,
 628                         .name = "AutoNeg",
 629                         .err  = "parameter ignored",
 630                         .def  = AUTONEG_ADV_DEFAULT,
 631                         .arg  = { .l = { .nr = ARRAY_SIZE(an_list),
 632                                          .p = an_list }}
 633                 };
 634
 635                 if (num_AutoNeg > bd) {
 636                         an = AutoNeg[bd];
 637                         e1000_validate_option(&an, &opt, adapter);
 638                 } else {
 639                         an = opt.def;
 640                 }
 641                 adapter->hw.autoneg_advertised = an;
 642         }
 643
 644         switch (speed + dplx) {
 645         case 0:
 646                 adapter->hw.autoneg = adapter->fc_autoneg = 1;
 647                 if ((num_Speed > bd) && (speed != 0 || dplx != 0))
 648                         e_dev_info("Speed and duplex autonegotiation "
 649                                    "enabled\n");
 650                 break;
 651         case HALF_DUPLEX:
 652                 e_dev_info("Half Duplex specified without Speed\n");
 653                 e_dev_info("Using Autonegotiation at Half Duplex only\n");
 654                 adapter->hw.autoneg = adapter->fc_autoneg = 1;
 655                 adapter->hw.autoneg_advertised = ADVERTISE_10_HALF |
 656                                                  ADVERTISE_100_HALF;
 657                 break;
 658         case FULL_DUPLEX:
 659                 e_dev_info("Full Duplex specified without Speed\n");
 660                 e_dev_info("Using Autonegotiation at Full Duplex only\n");
 661                 adapter->hw.autoneg = adapter->fc_autoneg = 1;
 662                 adapter->hw.autoneg_advertised = ADVERTISE_10_FULL |
 663                                                  ADVERTISE_100_FULL |
 664                                                  ADVERTISE_1000_FULL;
 665                 break;
 666         case SPEED_10:
 667                 e_dev_info("10 Mbps Speed specified without Duplex\n");
 668                 e_dev_info("Using Autonegotiation at 10 Mbps only\n");
 669                 adapter->hw.autoneg = adapter->fc_autoneg = 1;
 670                 adapter->hw.autoneg_advertised = ADVERTISE_10_HALF |
 671                                                  ADVERTISE_10_FULL;
 672                 break;
 673         case SPEED_10 + HALF_DUPLEX:
 674                 e_dev_info("Forcing to 10 Mbps Half Duplex\n");
 675                 adapter->hw.autoneg = adapter->fc_autoneg = 0;
 676                 adapter->hw.forced_speed_duplex = e1000_10_half;
 677                 adapter->hw.autoneg_advertised = 0;
 678                 break;
 679         case SPEED_10 + FULL_DUPLEX:
 680                 e_dev_info("Forcing to 10 Mbps Full Duplex\n");
 681                 adapter->hw.autoneg = adapter->fc_autoneg = 0;
 682                 adapter->hw.forced_speed_duplex = e1000_10_full;
 683                 adapter->hw.autoneg_advertised = 0;
 684                 break;
 685         case SPEED_100:
 686                 e_dev_info("100 Mbps Speed specified without Duplex\n");
 687                 e_dev_info("Using Autonegotiation at 100 Mbps only\n");
 688                 adapter->hw.autoneg = adapter->fc_autoneg = 1;
 689                 adapter->hw.autoneg_advertised = ADVERTISE_100_HALF |
 690                                                  ADVERTISE_100_FULL;
 691                 break;
 692         case SPEED_100 + HALF_DUPLEX:
 693                 e_dev_info("Forcing to 100 Mbps Half Duplex\n");
 694                 adapter->hw.autoneg = adapter->fc_autoneg = 0;
 695                 adapter->hw.forced_speed_duplex = e1000_100_half;
 696                 adapter->hw.autoneg_advertised = 0;
 697                 break;
 698         case SPEED_100 + FULL_DUPLEX:
 699                 e_dev_info("Forcing to 100 Mbps Full Duplex\n");
 700                 adapter->hw.autoneg = adapter->fc_autoneg = 0;
 701                 adapter->hw.forced_speed_duplex = e1000_100_full;
 702                 adapter->hw.autoneg_advertised = 0;
 703                 break;
 704         case SPEED_1000:
 705                 e_dev_info("1000 Mbps Speed specified without Duplex\n");
 706                 goto full_duplex_only;
 707         case SPEED_1000 + HALF_DUPLEX:
 708                 e_dev_info("Half Duplex is not supported at 1000 Mbps\n");
 709                 fallthrough;
 710         case SPEED_1000 + FULL_DUPLEX:
 711 full_duplex_only:
 712                 e_dev_info("Using Autonegotiation at 1000 Mbps Full Duplex "
 713                            "only\n");
 714                 adapter->hw.autoneg = adapter->fc_autoneg = 1;
 715                 adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
 716                 break;
 717         default:
 718                 BUG();
 719         }
 720
 721         /* Speed, AutoNeg and MDI/MDI-X must all play nice */
 722         if (e1000_validate_mdi_setting(&(adapter->hw)) < 0) {
 723                 e_dev_info("Speed, AutoNeg and MDI-X specs are incompatible. "
 724                            "Setting MDI-X to a compatible value.\n");
 725         }
 726 }
 727