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linux-sg2042/drivers/net/e1000/e1000_param.c

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/*******************************************************************************
Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your option)
any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
The full GNU General Public License is included in this distribution in the
file called LICENSE.
Contact Information:
Linux NICS <linux.nics@intel.com>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*******************************************************************************/
#include "e1000.h"
/* This is the only thing that needs to be changed to adjust the
* maximum number of ports that the driver can manage.
*/
#define E1000_MAX_NIC 32
#define OPTION_UNSET -1
#define OPTION_DISABLED 0
#define OPTION_ENABLED 1
/* All parameters are treated the same, as an integer array of values.
* This macro just reduces the need to repeat the same declaration code
* over and over (plus this helps to avoid typo bugs).
*/
#define E1000_PARAM_INIT { [0 ... E1000_MAX_NIC] = OPTION_UNSET }
#define E1000_PARAM(X, desc) \
static int __devinitdata X[E1000_MAX_NIC+1] = E1000_PARAM_INIT; \
static int num_##X = 0; \
module_param_array_named(X, X, int, &num_##X, 0); \
MODULE_PARM_DESC(X, desc);
/* Transmit Descriptor Count
*
* Valid Range: 80-256 for 82542 and 82543 gigabit ethernet controllers
* Valid Range: 80-4096 for 82544 and newer
*
* Default Value: 256
*/
E1000_PARAM(TxDescriptors, "Number of transmit descriptors");
/* Receive Descriptor Count
*
* Valid Range: 80-256 for 82542 and 82543 gigabit ethernet controllers
* Valid Range: 80-4096 for 82544 and newer
*
* Default Value: 256
*/
E1000_PARAM(RxDescriptors, "Number of receive descriptors");
/* User Specified Speed Override
*
* Valid Range: 0, 10, 100, 1000
* - 0 - auto-negotiate at all supported speeds
* - 10 - only link at 10 Mbps
* - 100 - only link at 100 Mbps
* - 1000 - only link at 1000 Mbps
*
* Default Value: 0
*/
E1000_PARAM(Speed, "Speed setting");
/* User Specified Duplex Override
*
* Valid Range: 0-2
* - 0 - auto-negotiate for duplex
* - 1 - only link at half duplex
* - 2 - only link at full duplex
*
* Default Value: 0
*/
E1000_PARAM(Duplex, "Duplex setting");
/* Auto-negotiation Advertisement Override
*
* Valid Range: 0x01-0x0F, 0x20-0x2F (copper); 0x20 (fiber)
*
* The AutoNeg value is a bit mask describing which speed and duplex
* combinations should be advertised during auto-negotiation.
* The supported speed and duplex modes are listed below
*
* Bit 7 6 5 4 3 2 1 0
* Speed (Mbps) N/A N/A 1000 N/A 100 100 10 10
* Duplex Full Full Half Full Half
*
* Default Value: 0x2F (copper); 0x20 (fiber)
*/
E1000_PARAM(AutoNeg, "Advertised auto-negotiation setting");
/* User Specified Flow Control Override
*
* Valid Range: 0-3
* - 0 - No Flow Control
* - 1 - Rx only, respond to PAUSE frames but do not generate them
* - 2 - Tx only, generate PAUSE frames but ignore them on receive
* - 3 - Full Flow Control Support
*
* Default Value: Read flow control settings from the EEPROM
*/
E1000_PARAM(FlowControl, "Flow Control setting");
/* XsumRX - Receive Checksum Offload Enable/Disable
*
* Valid Range: 0, 1
* - 0 - disables all checksum offload
* - 1 - enables receive IP/TCP/UDP checksum offload
* on 82543 and newer -based NICs
*
* Default Value: 1
*/
E1000_PARAM(XsumRX, "Disable or enable Receive Checksum offload");
/* Transmit Interrupt Delay in units of 1.024 microseconds
*
* Valid Range: 0-65535
*
* Default Value: 64
*/
E1000_PARAM(TxIntDelay, "Transmit Interrupt Delay");
/* Transmit Absolute Interrupt Delay in units of 1.024 microseconds
*
* Valid Range: 0-65535
*
* Default Value: 0
*/
E1000_PARAM(TxAbsIntDelay, "Transmit Absolute Interrupt Delay");
/* Receive Interrupt Delay in units of 1.024 microseconds
*
* Valid Range: 0-65535
*
* Default Value: 0
*/
E1000_PARAM(RxIntDelay, "Receive Interrupt Delay");
/* Receive Absolute Interrupt Delay in units of 1.024 microseconds
*
* Valid Range: 0-65535
*
* Default Value: 128
*/
E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay");
/* Interrupt Throttle Rate (interrupts/sec)
*
* Valid Range: 100-100000 (0=off, 1=dynamic)
*
* Default Value: 1
*/
E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate");
#define AUTONEG_ADV_DEFAULT 0x2F
#define AUTONEG_ADV_MASK 0x2F
#define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
#define DEFAULT_RDTR 0
#define MAX_RXDELAY 0xFFFF
#define MIN_RXDELAY 0
#define DEFAULT_RADV 128
#define MAX_RXABSDELAY 0xFFFF
#define MIN_RXABSDELAY 0
#define DEFAULT_TIDV 64
#define MAX_TXDELAY 0xFFFF
#define MIN_TXDELAY 0
#define DEFAULT_TADV 64
#define MAX_TXABSDELAY 0xFFFF
#define MIN_TXABSDELAY 0
#define DEFAULT_ITR 8000
#define MAX_ITR 100000
#define MIN_ITR 100
struct e1000_option {
enum { enable_option, range_option, list_option } type;
char *name;
char *err;
int def;
union {
struct { /* range_option info */
int min;
int max;
} r;
struct { /* list_option info */
int nr;
struct e1000_opt_list { int i; char *str; } *p;
} l;
} arg;
};
static int __devinit
e1000_validate_option(int *value, struct e1000_option *opt,
struct e1000_adapter *adapter)
{
if(*value == OPTION_UNSET) {
*value = opt->def;
return 0;
}
switch (opt->type) {
case enable_option:
switch (*value) {
case OPTION_ENABLED:
DPRINTK(PROBE, INFO, "%s Enabled\n", opt->name);
return 0;
case OPTION_DISABLED:
DPRINTK(PROBE, INFO, "%s Disabled\n", opt->name);
return 0;
}
break;
case range_option:
if(*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
DPRINTK(PROBE, INFO,
"%s set to %i\n", opt->name, *value);
return 0;
}
break;
case list_option: {
int i;
struct e1000_opt_list *ent;
for(i = 0; i < opt->arg.l.nr; i++) {
ent = &opt->arg.l.p[i];
if(*value == ent->i) {
if(ent->str[0] != '\0')
DPRINTK(PROBE, INFO, "%s\n", ent->str);
return 0;
}
}
}
break;
default:
BUG();
}
DPRINTK(PROBE, INFO, "Invalid %s specified (%i) %s\n",
opt->name, *value, opt->err);
*value = opt->def;
return -1;
}
static void e1000_check_fiber_options(struct e1000_adapter *adapter);
static void e1000_check_copper_options(struct e1000_adapter *adapter);
/**
* e1000_check_options - Range Checking for Command Line Parameters
* @adapter: board private structure
*
* This routine checks all command line parameters for valid user
* input. If an invalid value is given, or if no user specified
* value exists, a default value is used. The final value is stored
* in a variable in the adapter structure.
**/
void __devinit
e1000_check_options(struct e1000_adapter *adapter)
{
int bd = adapter->bd_number;
if(bd >= E1000_MAX_NIC) {
DPRINTK(PROBE, NOTICE,
"Warning: no configuration for board #%i\n", bd);
DPRINTK(PROBE, NOTICE, "Using defaults for all values\n");
}
{ /* Transmit Descriptor Count */
struct e1000_option opt = {
.type = range_option,
.name = "Transmit Descriptors",
.err = "using default of "
__MODULE_STRING(E1000_DEFAULT_TXD),
.def = E1000_DEFAULT_TXD,
.arg = { .r = { .min = E1000_MIN_TXD }}
};
struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
e1000_mac_type mac_type = adapter->hw.mac_type;
opt.arg.r.max = mac_type < e1000_82544 ?
E1000_MAX_TXD : E1000_MAX_82544_TXD;
if (num_TxDescriptors > bd) {
tx_ring->count = TxDescriptors[bd];
e1000_validate_option(&tx_ring->count, &opt, adapter);
E1000_ROUNDUP(tx_ring->count,
REQ_TX_DESCRIPTOR_MULTIPLE);
} else {
tx_ring->count = opt.def;
}
}
{ /* Receive Descriptor Count */
struct e1000_option opt = {
.type = range_option,
.name = "Receive Descriptors",
.err = "using default of "
__MODULE_STRING(E1000_DEFAULT_RXD),
.def = E1000_DEFAULT_RXD,
.arg = { .r = { .min = E1000_MIN_RXD }}
};
struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
e1000_mac_type mac_type = adapter->hw.mac_type;
opt.arg.r.max = mac_type < e1000_82544 ? E1000_MAX_RXD :
E1000_MAX_82544_RXD;
if (num_RxDescriptors > bd) {
rx_ring->count = RxDescriptors[bd];
e1000_validate_option(&rx_ring->count, &opt, adapter);
E1000_ROUNDUP(rx_ring->count,
REQ_RX_DESCRIPTOR_MULTIPLE);
} else {
rx_ring->count = opt.def;
}
}
{ /* Checksum Offload Enable/Disable */
struct e1000_option opt = {
.type = enable_option,
.name = "Checksum Offload",
.err = "defaulting to Enabled",
.def = OPTION_ENABLED
};
if (num_XsumRX > bd) {
int rx_csum = XsumRX[bd];
e1000_validate_option(&rx_csum, &opt, adapter);
adapter->rx_csum = rx_csum;
} else {
adapter->rx_csum = opt.def;
}
}
{ /* Flow Control */
struct e1000_opt_list fc_list[] =
{{ e1000_fc_none, "Flow Control Disabled" },
{ e1000_fc_rx_pause,"Flow Control Receive Only" },
{ e1000_fc_tx_pause,"Flow Control Transmit Only" },
{ e1000_fc_full, "Flow Control Enabled" },
{ e1000_fc_default, "Flow Control Hardware Default" }};
struct e1000_option opt = {
.type = list_option,
.name = "Flow Control",
.err = "reading default settings from EEPROM",
.def = e1000_fc_default,
.arg = { .l = { .nr = ARRAY_SIZE(fc_list),
.p = fc_list }}
};
if (num_FlowControl > bd) {
int fc = FlowControl[bd];
e1000_validate_option(&fc, &opt, adapter);
adapter->hw.fc = adapter->hw.original_fc = fc;
} else {
adapter->hw.fc = opt.def;
}
}
{ /* Transmit Interrupt Delay */
struct e1000_option opt = {
.type = range_option,
.name = "Transmit Interrupt Delay",
.err = "using default of " __MODULE_STRING(DEFAULT_TIDV),
.def = DEFAULT_TIDV,
.arg = { .r = { .min = MIN_TXDELAY,
.max = MAX_TXDELAY }}
};
if (num_TxIntDelay > bd) {
adapter->tx_int_delay = TxIntDelay[bd];
e1000_validate_option(&adapter->tx_int_delay, &opt,
adapter);
} else {
adapter->tx_int_delay = opt.def;
}
}
{ /* Transmit Absolute Interrupt Delay */
struct e1000_option opt = {
.type = range_option,
.name = "Transmit Absolute Interrupt Delay",
.err = "using default of " __MODULE_STRING(DEFAULT_TADV),
.def = DEFAULT_TADV,
.arg = { .r = { .min = MIN_TXABSDELAY,
.max = MAX_TXABSDELAY }}
};
if (num_TxAbsIntDelay > bd) {
adapter->tx_abs_int_delay = TxAbsIntDelay[bd];
e1000_validate_option(&adapter->tx_abs_int_delay, &opt,
adapter);
} else {
adapter->tx_abs_int_delay = opt.def;
}
}
{ /* Receive Interrupt Delay */
struct e1000_option opt = {
.type = range_option,
.name = "Receive Interrupt Delay",
.err = "using default of " __MODULE_STRING(DEFAULT_RDTR),
.def = DEFAULT_RDTR,
.arg = { .r = { .min = MIN_RXDELAY,
.max = MAX_RXDELAY }}
};
if (num_RxIntDelay > bd) {
adapter->rx_int_delay = RxIntDelay[bd];
e1000_validate_option(&adapter->rx_int_delay, &opt,
adapter);
} else {
adapter->rx_int_delay = opt.def;
}
}
{ /* Receive Absolute Interrupt Delay */
struct e1000_option opt = {
.type = range_option,
.name = "Receive Absolute Interrupt Delay",
.err = "using default of " __MODULE_STRING(DEFAULT_RADV),
.def = DEFAULT_RADV,
.arg = { .r = { .min = MIN_RXABSDELAY,
.max = MAX_RXABSDELAY }}
};
if (num_RxAbsIntDelay > bd) {
adapter->rx_abs_int_delay = RxAbsIntDelay[bd];
e1000_validate_option(&adapter->rx_abs_int_delay, &opt,
adapter);
} else {
adapter->rx_abs_int_delay = opt.def;
}
}
{ /* Interrupt Throttling Rate */
struct e1000_option opt = {
.type = range_option,
.name = "Interrupt Throttling Rate (ints/sec)",
.err = "using default of " __MODULE_STRING(DEFAULT_ITR),
.def = DEFAULT_ITR,
.arg = { .r = { .min = MIN_ITR,
.max = MAX_ITR }}
};
if (num_InterruptThrottleRate > bd) {
adapter->itr = InterruptThrottleRate[bd];
switch(adapter->itr) {
case 0:
DPRINTK(PROBE, INFO, "%s turned off\n",
opt.name);
break;
case 1:
DPRINTK(PROBE, INFO, "%s set to dynamic mode\n",
opt.name);
break;
default:
e1000_validate_option(&adapter->itr, &opt,
adapter);
break;
}
} else {
adapter->itr = opt.def;
}
}
switch(adapter->hw.media_type) {
case e1000_media_type_fiber:
case e1000_media_type_internal_serdes:
e1000_check_fiber_options(adapter);
break;
case e1000_media_type_copper:
e1000_check_copper_options(adapter);
break;
default:
BUG();
}
}
/**
* e1000_check_fiber_options - Range Checking for Link Options, Fiber Version
* @adapter: board private structure
*
* Handles speed and duplex options on fiber adapters
**/
static void __devinit
e1000_check_fiber_options(struct e1000_adapter *adapter)
{
int bd = adapter->bd_number;
if(num_Speed > bd) {
DPRINTK(PROBE, INFO, "Speed not valid for fiber adapters, "
"parameter ignored\n");
}
if(num_Duplex > bd) {
DPRINTK(PROBE, INFO, "Duplex not valid for fiber adapters, "
"parameter ignored\n");
}
if((num_AutoNeg > bd) && (AutoNeg[bd] != 0x20)) {
DPRINTK(PROBE, INFO, "AutoNeg other than 1000/Full is "
"not valid for fiber adapters, "
"parameter ignored\n");
}
}
/**
* e1000_check_copper_options - Range Checking for Link Options, Copper Version
* @adapter: board private structure
*
* Handles speed and duplex options on copper adapters
**/
static void __devinit
e1000_check_copper_options(struct e1000_adapter *adapter)
{
int speed, dplx;
int bd = adapter->bd_number;
{ /* Speed */
struct e1000_opt_list speed_list[] = {{ 0, "" },
{ SPEED_10, "" },
{ SPEED_100, "" },
{ SPEED_1000, "" }};
struct e1000_option opt = {
.type = list_option,
.name = "Speed",
.err = "parameter ignored",
.def = 0,
.arg = { .l = { .nr = ARRAY_SIZE(speed_list),
.p = speed_list }}
};
if (num_Speed > bd) {
speed = Speed[bd];
e1000_validate_option(&speed, &opt, adapter);
} else {
speed = opt.def;
}
}
{ /* Duplex */
struct e1000_opt_list dplx_list[] = {{ 0, "" },
{ HALF_DUPLEX, "" },
{ FULL_DUPLEX, "" }};
struct e1000_option opt = {
.type = list_option,
.name = "Duplex",
.err = "parameter ignored",
.def = 0,
.arg = { .l = { .nr = ARRAY_SIZE(dplx_list),
.p = dplx_list }}
};
if (num_Duplex > bd) {
dplx = Duplex[bd];
e1000_validate_option(&dplx, &opt, adapter);
} else {
dplx = opt.def;
}
}
if((num_AutoNeg > bd) && (speed != 0 || dplx != 0)) {
DPRINTK(PROBE, INFO,
"AutoNeg specified along with Speed or Duplex, "
"parameter ignored\n");
adapter->hw.autoneg_advertised = AUTONEG_ADV_DEFAULT;
} else { /* Autoneg */
struct e1000_opt_list an_list[] =
#define AA "AutoNeg advertising "
{{ 0x01, AA "10/HD" },
{ 0x02, AA "10/FD" },
{ 0x03, AA "10/FD, 10/HD" },
{ 0x04, AA "100/HD" },
{ 0x05, AA "100/HD, 10/HD" },
{ 0x06, AA "100/HD, 10/FD" },
{ 0x07, AA "100/HD, 10/FD, 10/HD" },
{ 0x08, AA "100/FD" },
{ 0x09, AA "100/FD, 10/HD" },
{ 0x0a, AA "100/FD, 10/FD" },
{ 0x0b, AA "100/FD, 10/FD, 10/HD" },
{ 0x0c, AA "100/FD, 100/HD" },
{ 0x0d, AA "100/FD, 100/HD, 10/HD" },
{ 0x0e, AA "100/FD, 100/HD, 10/FD" },
{ 0x0f, AA "100/FD, 100/HD, 10/FD, 10/HD" },
{ 0x20, AA "1000/FD" },
{ 0x21, AA "1000/FD, 10/HD" },
{ 0x22, AA "1000/FD, 10/FD" },
{ 0x23, AA "1000/FD, 10/FD, 10/HD" },
{ 0x24, AA "1000/FD, 100/HD" },
{ 0x25, AA "1000/FD, 100/HD, 10/HD" },
{ 0x26, AA "1000/FD, 100/HD, 10/FD" },
{ 0x27, AA "1000/FD, 100/HD, 10/FD, 10/HD" },
{ 0x28, AA "1000/FD, 100/FD" },
{ 0x29, AA "1000/FD, 100/FD, 10/HD" },
{ 0x2a, AA "1000/FD, 100/FD, 10/FD" },
{ 0x2b, AA "1000/FD, 100/FD, 10/FD, 10/HD" },
{ 0x2c, AA "1000/FD, 100/FD, 100/HD" },
{ 0x2d, AA "1000/FD, 100/FD, 100/HD, 10/HD" },
{ 0x2e, AA "1000/FD, 100/FD, 100/HD, 10/FD" },
{ 0x2f, AA "1000/FD, 100/FD, 100/HD, 10/FD, 10/HD" }};
struct e1000_option opt = {
.type = list_option,
.name = "AutoNeg",
.err = "parameter ignored",
.def = AUTONEG_ADV_DEFAULT,
.arg = { .l = { .nr = ARRAY_SIZE(an_list),
.p = an_list }}
};
int an = AutoNeg[bd];
e1000_validate_option(&an, &opt, adapter);
adapter->hw.autoneg_advertised = an;
}
switch (speed + dplx) {
case 0:
adapter->hw.autoneg = adapter->fc_autoneg = 1;
if((num_Speed > bd) && (speed != 0 || dplx != 0))
DPRINTK(PROBE, INFO,
"Speed and duplex autonegotiation enabled\n");
break;
case HALF_DUPLEX:
DPRINTK(PROBE, INFO, "Half Duplex specified without Speed\n");
DPRINTK(PROBE, INFO, "Using Autonegotiation at "
"Half Duplex only\n");
adapter->hw.autoneg = adapter->fc_autoneg = 1;
adapter->hw.autoneg_advertised = ADVERTISE_10_HALF |
ADVERTISE_100_HALF;
break;
case FULL_DUPLEX:
DPRINTK(PROBE, INFO, "Full Duplex specified without Speed\n");
DPRINTK(PROBE, INFO, "Using Autonegotiation at "
"Full Duplex only\n");
adapter->hw.autoneg = adapter->fc_autoneg = 1;
adapter->hw.autoneg_advertised = ADVERTISE_10_FULL |
ADVERTISE_100_FULL |
ADVERTISE_1000_FULL;
break;
case SPEED_10:
DPRINTK(PROBE, INFO, "10 Mbps Speed specified "
"without Duplex\n");
DPRINTK(PROBE, INFO, "Using Autonegotiation at 10 Mbps only\n");
adapter->hw.autoneg = adapter->fc_autoneg = 1;
adapter->hw.autoneg_advertised = ADVERTISE_10_HALF |
ADVERTISE_10_FULL;
break;
case SPEED_10 + HALF_DUPLEX:
DPRINTK(PROBE, INFO, "Forcing to 10 Mbps Half Duplex\n");
adapter->hw.autoneg = adapter->fc_autoneg = 0;
adapter->hw.forced_speed_duplex = e1000_10_half;
adapter->hw.autoneg_advertised = 0;
break;
case SPEED_10 + FULL_DUPLEX:
DPRINTK(PROBE, INFO, "Forcing to 10 Mbps Full Duplex\n");
adapter->hw.autoneg = adapter->fc_autoneg = 0;
adapter->hw.forced_speed_duplex = e1000_10_full;
adapter->hw.autoneg_advertised = 0;
break;
case SPEED_100:
DPRINTK(PROBE, INFO, "100 Mbps Speed specified "
"without Duplex\n");
DPRINTK(PROBE, INFO, "Using Autonegotiation at "
"100 Mbps only\n");
adapter->hw.autoneg = adapter->fc_autoneg = 1;
adapter->hw.autoneg_advertised = ADVERTISE_100_HALF |
ADVERTISE_100_FULL;
break;
case SPEED_100 + HALF_DUPLEX:
DPRINTK(PROBE, INFO, "Forcing to 100 Mbps Half Duplex\n");
adapter->hw.autoneg = adapter->fc_autoneg = 0;
adapter->hw.forced_speed_duplex = e1000_100_half;
adapter->hw.autoneg_advertised = 0;
break;
case SPEED_100 + FULL_DUPLEX:
DPRINTK(PROBE, INFO, "Forcing to 100 Mbps Full Duplex\n");
adapter->hw.autoneg = adapter->fc_autoneg = 0;
adapter->hw.forced_speed_duplex = e1000_100_full;
adapter->hw.autoneg_advertised = 0;
break;
case SPEED_1000:
DPRINTK(PROBE, INFO, "1000 Mbps Speed specified without "
"Duplex\n");
DPRINTK(PROBE, INFO,
"Using Autonegotiation at 1000 Mbps "
"Full Duplex only\n");
adapter->hw.autoneg = adapter->fc_autoneg = 1;
adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
break;
case SPEED_1000 + HALF_DUPLEX:
DPRINTK(PROBE, INFO,
"Half Duplex is not supported at 1000 Mbps\n");
DPRINTK(PROBE, INFO,
"Using Autonegotiation at 1000 Mbps "
"Full Duplex only\n");
adapter->hw.autoneg = adapter->fc_autoneg = 1;
adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
break;
case SPEED_1000 + FULL_DUPLEX:
DPRINTK(PROBE, INFO,
"Using Autonegotiation at 1000 Mbps Full Duplex only\n");
adapter->hw.autoneg = adapter->fc_autoneg = 1;
adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
break;
default:
BUG();
}
/* Speed, AutoNeg and MDI/MDI-X must all play nice */
if (e1000_validate_mdi_setting(&(adapter->hw)) < 0) {
DPRINTK(PROBE, INFO,
"Speed, AutoNeg and MDI-X specifications are "
"incompatible. Setting MDI-X to a compatible value.\n");
}
}
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