/*******************************************************************************
Copyright(c) 1999 - 2003 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 "ixgb.h"
/* This is the only thing that needs to be changed to adjust the
* maximum number of ports that the driver can manage.
*/
#define IXGB_MAX_NIC 8
#define OPTION_UNSET -1
#define OPTION_DISABLED 0
#define OPTION_ENABLED 1
/* Module Parameters are always initialized to -1, so that the driver
* can tell the difference between no user specified value or the
* user asking for the default value.
* The true default values are loaded in when ixgb_check_options is called.
*
* This is a GCC extension to ANSI C.
* See the item "Labeled Elements in Initializers" in the section
* "Extensions to the C Language Family" of the GCC documentation.
*/
#define IXGB_PARAM_INIT { [0 ... IXGB_MAX_NIC] = OPTION_UNSET }
/* 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 IXGB_PARAM(X, S) \
static const int __devinitdata X[IXGB_MAX_NIC + 1] = IXGB_PARAM_INIT; \
MODULE_PARM(X, "1-" __MODULE_STRING(IXGB_MAX_NIC) "i"); \
MODULE_PARM_DESC(X, S);
/* Transmit Descriptor Count
*
* Valid Range: 64-4096
*
* Default Value: 256
*/
IXGB_PARAM(TxDescriptors, "Number of transmit descriptors");
/* Receive Descriptor Count
*
* Valid Range: 64-4096
*
* Default Value: 1024
*/
IXGB_PARAM(RxDescriptors, "Number of receive descriptors");
/* 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
*/
IXGB_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 82597 based NICs
*
* Default Value: 1
*/
IXGB_PARAM(XsumRX, "Disable or enable Receive Checksum offload");
/* XsumTX - Transmit Checksum Offload Enable/Disable
*
* Valid Range: 0, 1
* - 0 - disables all checksum offload
* - 1 - enables transmmit IP/TCP/UDP checksum offload
* on 82597 based NICs
*
* Default Value: 1
*/
IXGB_PARAM(XsumTX, "Disable or enable Transmit Checksum offload");
/* Receive Interrupt Delay in units of 0.8192 microseconds
*
* Valid Range: 0-65535
*
* Default Value: 72
*/
IXGB_PARAM(RxIntDelay, "Receive Interrupt Delay");
/* Receive Interrupt Moderation enable (uses RxIntDelay too)
*
* Valid Range: 0,1
*
* Default Value: 1
*/
IXGB_PARAM(RAIDC, "Disable or enable Receive Interrupt Moderation");
/* Receive Flow control high threshold (when we send a pause frame)
* (FCRTH)
*
* Valid Range: 1,536 - 262,136 (0x600 - 0x3FFF8, 8 byte granularity)
*
* Default Value: 196,608 (0x30000)
*/
IXGB_PARAM(RxFCHighThresh, "Receive Flow Control High Threshold");
/* Receive Flow control low threshold (when we send a resume frame)
* (FCRTL)
*
* Valid Range: 64 - 262,136 (0x40 - 0x3FFF8, 8 byte granularity)
* must be less than high threshold by at least 8 bytes
*
* Default Value: 163,840 (0x28000)
*/
IXGB_PARAM(RxFCLowThresh, "Receive Flow Control Low Threshold");
/* Flow control request timeout (how long to pause the link partner's tx)
* (PAP 15:0)
*
* Valid Range: 1 - 65535
*
* Default Value: 256 (0x100)
*/
IXGB_PARAM(FCReqTimeout, "Flow Control Request Timeout");
/* Transmit Interrupt Delay in units of 0.8192 microseconds
*
* Valid Range: 0-65535
*
* Default Value: 32
*/
IXGB_PARAM(TxIntDelay, "Transmit Interrupt Delay");
/* Interrupt Delay Enable
*
* Valid Range: 0, 1
*
* - 0 - disables transmit interrupt delay
* - 1 - enables transmmit interrupt delay
*
* Default Value: 1
*/
IXGB_PARAM(IntDelayEnable, "Transmit Interrupt Delay Enable");
#define DEFAULT_TXD 256
#define MAX_TXD 4096
#define MIN_TXD 64
#define DEFAULT_RXD 1024
#define MAX_RXD 4096
#define MIN_RXD 64
#define DEFAULT_TIDV 32
#define MAX_TIDV 0xFFFF
#define MIN_TIDV 0
#define DEFAULT_RDTR 72
#define MAX_RDTR 0xFFFF
#define MIN_RDTR 0
#define XSUMRX_DEFAULT OPTION_ENABLED
#define FLOW_CONTROL_FULL ixgb_fc_full
#define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
#define DEFAULT_FCRTL 0x28000
#define DEFAULT_FCRTH 0x30000
#define MIN_FCRTL 0
#define MAX_FCRTL 0x3FFE8
#define MIN_FCRTH 8
#define MAX_FCRTH 0x3FFF0
#define DEFAULT_FCPAUSE 0x100
#define MIN_FCPAUSE 1
#define MAX_FCPAUSE 0xffff
struct ixgb_option {
enum { enable_option, range_option, list_option } type;
char *name;
char *err;
int def;
union {
struct { /* range option information */
int min;
int max;
} r;
struct { /* list option information */
int nr;
struct ixgb_opt_list {
int i;
char *str;
} *p;
} l;
} arg;
};
static int __devinit
ixgb_validate_option(int *value, struct ixgb_option *opt)
{
if (*value == OPTION_UNSET) {
*value = opt->def;
return 0;
}
switch (opt->type) {
case enable_option:
switch (*value) {
case OPTION_ENABLED:
printk(KERN_INFO "%s Enabled\n", opt->name);
return 0;
case OPTION_DISABLED:
printk(KERN_INFO "%s Disabled\n", opt->name);
return 0;
}
break;
case range_option:
if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
printk(KERN_INFO "%s set to %i\n", opt->name, *value);
return 0;
}
break;
case list_option:
{
int i;
struct ixgb_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')
printk(KERN_INFO "%s",
ent->str);
return 0;
}
}
}
break;
default:
BUG();
}
printk(KERN_INFO "Invalid %s specified (%i) %s\n", opt->name, *value,
opt->err);
*value = opt->def;
return -1;
}
#define LIST_LEN(l) (sizeof(l) / sizeof(l[0]))
/**
* ixgb_check_options - Range Checking for Command Line Parameters
* @adapter: board private structure
*
* This routine checks all command line paramters 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
ixgb_check_options(struct ixgb_adapter *adapter)
{
int board = adapter->bd_number;
IXGB_DBG("ixgb_check_options\n");
if (board >= IXGB_MAX_NIC) {
printk(KERN_NOTICE "Warning: no configuration for board #%i\n",
board);
printk(KERN_NOTICE "Using defaults for all values\n");
board = IXGB_MAX_NIC;
}
{ /* Transmit Descriptor Count */
struct ixgb_option opt = {
.type = range_option,
.name = "Transmit Descriptors",
.err = "using default of " __MODULE_STRING(DEFAULT_TXD),
.def = DEFAULT_TXD,
.arg = {.r = {.min = MIN_TXD,.max = MAX_TXD}}
};
struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
tx_ring->count = TxDescriptors[board];
ixgb_validate_option(&tx_ring->count, &opt);
IXGB_ROUNDUP(tx_ring->count, IXGB_REQ_TX_DESCRIPTOR_MULTIPLE);
}
{ /* Receive Descriptor Count */
struct ixgb_option opt = {
.type = range_option,
.name = "Receive Descriptors",
.err = "using default of " __MODULE_STRING(DEFAULT_RXD),
.def = DEFAULT_RXD,
.arg = {.r = {.min = MIN_RXD,.max = MAX_RXD}}
};
struct ixgb_desc_ring *rx_ring = &adapter->rx_ring;
rx_ring->count = RxDescriptors[board];
ixgb_validate_option(&rx_ring->count, &opt);
IXGB_ROUNDUP(rx_ring->count, IXGB_REQ_RX_DESCRIPTOR_MULTIPLE);
}
{ /* Receive Checksum Offload Enable */
struct ixgb_option opt = {
.type = enable_option,
.name = "Receive Checksum Offload",
.err = "defaulting to Enabled",
.def = OPTION_ENABLED,
};
int rx_csum = XsumRX[board];
ixgb_validate_option(&rx_csum, &opt);
adapter->rx_csum = rx_csum;
}
{ /* Transmit Checksum Offload Enable */
struct ixgb_option opt = {
.type = enable_option,
.name = "Transmit Checksum Offload",
.err = "defaulting to Enabled",
.def = OPTION_ENABLED,
};
int tx_csum = XsumTX[board];
ixgb_validate_option(&tx_csum, &opt);
adapter->tx_csum = tx_csum;
}
{ /* Flow Control */
struct ixgb_opt_list fc_list[] = {
{ixgb_fc_none, "Flow Control Disabled\n"},
{ixgb_fc_rx_pause, "Flow Control Receive Only\n"},
{ixgb_fc_tx_pause, "Flow Control Transmit Only\n"},
{ixgb_fc_full, "Flow Control Enabled\n"},
{ixgb_fc_default, "Flow Control Hardware Default\n"}
};
struct ixgb_option opt = {
.type = list_option,
.name = "Flow Control",
.err = "reading default settings from EEPROM",
.def = ixgb_fc_full,
.arg = {.l = {.nr = LIST_LEN(fc_list),.p = fc_list}}
};
int fc = FlowControl[board];
ixgb_validate_option(&fc, &opt);
adapter->hw.fc.type = fc;
}
{ /* Receive Flow Control High Threshold */
struct ixgb_option fcrth = {
.type = range_option,
.name = "Rx Flow Control High Threshold",
.err =
"using default of " __MODULE_STRING(DEFAULT_FCRTH),
.def = DEFAULT_FCRTH,
.arg = {.r = {.min = MIN_FCRTH,.max = MAX_FCRTH}}
};
adapter->hw.fc.high_water = RxFCHighThresh[board];
ixgb_validate_option(&adapter->hw.fc.high_water, &fcrth);
if (!(adapter->hw.fc.type & ixgb_fc_rx_pause))
printk(KERN_INFO
"Ignoring RxFCHighThresh when no RxFC\n");
}
{ /* Receive Flow Control Low Threshold */
struct ixgb_option fcrtl = {
.type = range_option,
.name = "Rx Flow Control Low Threshold",
.err =
"using default of " __MODULE_STRING(DEFAULT_FCRTL),
.def = DEFAULT_FCRTL,
.arg = {.r = {.min = MIN_FCRTL,.max = MAX_FCRTL}}
};
adapter->hw.fc.low_water = RxFCLowThresh[board];
ixgb_validate_option(&adapter->hw.fc.low_water, &fcrtl);
if (!(adapter->hw.fc.type & ixgb_fc_rx_pause))
printk(KERN_INFO
"Ignoring RxFCLowThresh when no RxFC\n");
}
{ /* Flow Control Pause Time Request */
struct ixgb_option fcpap = {
.type = range_option,
.name = "Flow Control Pause Time Request",
.err =
"using default of "
__MODULE_STRING(DEFAULT_FCPAUSE),
.def = DEFAULT_FCPAUSE,
.arg = {.r = {.min = MIN_FCPAUSE,.max = MAX_FCPAUSE}}
};
int pause_time = FCReqTimeout[board];
ixgb_validate_option(&pause_time, &fcpap);
if (!(adapter->hw.fc.type & ixgb_fc_rx_pause))
printk(KERN_INFO
"Ignoring FCReqTimeout when no RxFC\n");
adapter->hw.fc.pause_time = pause_time;
}
/* high low and spacing check for rx flow control thresholds */
if (adapter->hw.fc.type & ixgb_fc_rx_pause) {
/* high must be greater than low */
if (adapter->hw.fc.high_water < (adapter->hw.fc.low_water + 8)) {
/* set defaults */
printk(KERN_INFO
"RxFCHighThresh must be >= (RxFCLowThresh + 8), "
"Using Defaults\n");
adapter->hw.fc.high_water = DEFAULT_FCRTH;
adapter->hw.fc.low_water = DEFAULT_FCRTL;
}
}
{ /* Receive Interrupt Delay */
struct ixgb_option opt = {
.type = range_option,
.name = "Receive Interrupt Delay",
.err =
"using default of " __MODULE_STRING(DEFAULT_RDTR),
.def = DEFAULT_RDTR,
.arg = {.r = {.min = MIN_RDTR,.max = MAX_RDTR}}
};
adapter->rx_int_delay = RxIntDelay[board];
ixgb_validate_option(&adapter->rx_int_delay, &opt);
}
{ /* Receive Interrupt Moderation */
struct ixgb_option opt = {
.type = enable_option,
.name = "Advanced Receive Interrupt Moderation",
.err = "defaulting to Enabled",
.def = OPTION_ENABLED,
};
int raidc = RAIDC[board];
ixgb_validate_option(&raidc, &opt);
adapter->raidc = raidc;
}
{ /* Transmit Interrupt Delay */
struct ixgb_option opt = {
.type = range_option,
.name = "Transmit Interrupt Delay",
.err =
"using default of " __MODULE_STRING(DEFAULT_TIDV),
.def = DEFAULT_TIDV,
.arg = {.r = {.min = MIN_TIDV,.max = MAX_TIDV}}
};
adapter->tx_int_delay = TxIntDelay[board];
ixgb_validate_option(&adapter->tx_int_delay, &opt);
}
{ /* Transmit Interrupt Delay Enable */
struct ixgb_option opt = {
.type = enable_option,
.name = "Tx Interrupt Delay Enable",
.err = "defaulting to Enabled",
.def = OPTION_ENABLED,
};
int ide = IntDelayEnable[board];
ixgb_validate_option(&ide, &opt);
adapter->tx_int_delay_enable = ide;
}
}
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