470 lines
12 KiB
C
470 lines
12 KiB
C
/*******************************************************************************
|
|
|
|
Intel PRO/10GbE Linux driver
|
|
Copyright(c) 1999 - 2008 Intel Corporation.
|
|
|
|
This program is free software; you can redistribute it and/or modify it
|
|
under the terms and conditions of the GNU General Public License,
|
|
version 2, as published by the Free Software Foundation.
|
|
|
|
This program is distributed in the hope 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.,
|
|
51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
The full GNU General Public License is included in this distribution in
|
|
the file called "COPYING".
|
|
|
|
Contact Information:
|
|
Linux NICS <linux.nics@intel.com>
|
|
e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
|
|
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
|
|
|
|
*******************************************************************************/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#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
|
|
|
|
/* 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_INIT { [0 ... IXGB_MAX_NIC] = OPTION_UNSET }
|
|
#define IXGB_PARAM(X, desc) \
|
|
static int X[IXGB_MAX_NIC+1] \
|
|
= IXGB_PARAM_INIT; \
|
|
static unsigned int num_##X = 0; \
|
|
module_param_array_named(X, X, int, &num_##X, 0); \
|
|
MODULE_PARM_DESC(X, desc);
|
|
|
|
/* 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: 2 - Tx only (silicon bug avoidance)
|
|
*/
|
|
|
|
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");
|
|
|
|
/* Transmit Interrupt Delay in units of 0.8192 microseconds
|
|
*
|
|
* Valid Range: 0-65535
|
|
*
|
|
* Default Value: 32
|
|
*/
|
|
|
|
IXGB_PARAM(TxIntDelay, "Transmit Interrupt Delay");
|
|
|
|
/* Receive Interrupt Delay in units of 0.8192 microseconds
|
|
*
|
|
* Valid Range: 0-65535
|
|
*
|
|
* Default Value: 72
|
|
*/
|
|
|
|
IXGB_PARAM(RxIntDelay, "Receive Interrupt Delay");
|
|
|
|
/* 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: 65535 (0xffff) (we'll send an xon if we recover)
|
|
*/
|
|
|
|
IXGB_PARAM(FCReqTimeout, "Flow Control Request Timeout");
|
|
|
|
/* 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_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 DEFAULT_FCRTL 0x28000
|
|
#define DEFAULT_FCRTH 0x30000
|
|
#define MIN_FCRTL 0
|
|
#define MAX_FCRTL 0x3FFE8
|
|
#define MIN_FCRTH 8
|
|
#define MAX_FCRTH 0x3FFF0
|
|
|
|
#define MIN_FCPAUSE 1
|
|
#define MAX_FCPAUSE 0xffff
|
|
#define DEFAULT_FCPAUSE 0xFFFF /* this may be too long */
|
|
|
|
struct ixgb_option {
|
|
enum { enable_option, range_option, list_option } type;
|
|
const char *name;
|
|
const char *err;
|
|
int def;
|
|
union {
|
|
struct { /* range_option info */
|
|
int min;
|
|
int max;
|
|
} r;
|
|
struct { /* list_option info */
|
|
int nr;
|
|
const struct ixgb_opt_list {
|
|
int i;
|
|
const char *str;
|
|
} *p;
|
|
} l;
|
|
} arg;
|
|
};
|
|
|
|
static int
|
|
ixgb_validate_option(unsigned int *value, const struct ixgb_option *opt)
|
|
{
|
|
if (*value == OPTION_UNSET) {
|
|
*value = opt->def;
|
|
return 0;
|
|
}
|
|
|
|
switch (opt->type) {
|
|
case enable_option:
|
|
switch (*value) {
|
|
case OPTION_ENABLED:
|
|
pr_info("%s Enabled\n", opt->name);
|
|
return 0;
|
|
case OPTION_DISABLED:
|
|
pr_info("%s Disabled\n", opt->name);
|
|
return 0;
|
|
}
|
|
break;
|
|
case range_option:
|
|
if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
|
|
pr_info("%s set to %i\n", opt->name, *value);
|
|
return 0;
|
|
}
|
|
break;
|
|
case list_option: {
|
|
int i;
|
|
const 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')
|
|
pr_info("%s\n", ent->str);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
|
|
pr_info("Invalid %s specified (%i) %s\n", opt->name, *value, opt->err);
|
|
*value = opt->def;
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* ixgb_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
|
|
ixgb_check_options(struct ixgb_adapter *adapter)
|
|
{
|
|
int bd = adapter->bd_number;
|
|
if (bd >= IXGB_MAX_NIC) {
|
|
pr_notice("Warning: no configuration for board #%i\n", bd);
|
|
pr_notice("Using defaults for all values\n");
|
|
}
|
|
|
|
{ /* Transmit Descriptor Count */
|
|
static const 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;
|
|
|
|
if (num_TxDescriptors > bd) {
|
|
tx_ring->count = TxDescriptors[bd];
|
|
ixgb_validate_option(&tx_ring->count, &opt);
|
|
} else {
|
|
tx_ring->count = opt.def;
|
|
}
|
|
tx_ring->count = ALIGN(tx_ring->count, IXGB_REQ_TX_DESCRIPTOR_MULTIPLE);
|
|
}
|
|
{ /* Receive Descriptor Count */
|
|
static const 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;
|
|
|
|
if (num_RxDescriptors > bd) {
|
|
rx_ring->count = RxDescriptors[bd];
|
|
ixgb_validate_option(&rx_ring->count, &opt);
|
|
} else {
|
|
rx_ring->count = opt.def;
|
|
}
|
|
rx_ring->count = ALIGN(rx_ring->count, IXGB_REQ_RX_DESCRIPTOR_MULTIPLE);
|
|
}
|
|
{ /* Receive Checksum Offload Enable */
|
|
static const struct ixgb_option opt = {
|
|
.type = enable_option,
|
|
.name = "Receive Checksum Offload",
|
|
.err = "defaulting to Enabled",
|
|
.def = OPTION_ENABLED
|
|
};
|
|
|
|
if (num_XsumRX > bd) {
|
|
unsigned int rx_csum = XsumRX[bd];
|
|
ixgb_validate_option(&rx_csum, &opt);
|
|
adapter->rx_csum = rx_csum;
|
|
} else {
|
|
adapter->rx_csum = opt.def;
|
|
}
|
|
}
|
|
{ /* Flow Control */
|
|
|
|
static const struct ixgb_opt_list fc_list[] = {
|
|
{ ixgb_fc_none, "Flow Control Disabled" },
|
|
{ ixgb_fc_rx_pause, "Flow Control Receive Only" },
|
|
{ ixgb_fc_tx_pause, "Flow Control Transmit Only" },
|
|
{ ixgb_fc_full, "Flow Control Enabled" },
|
|
{ ixgb_fc_default, "Flow Control Hardware Default" }
|
|
};
|
|
|
|
static const struct ixgb_option opt = {
|
|
.type = list_option,
|
|
.name = "Flow Control",
|
|
.err = "reading default settings from EEPROM",
|
|
.def = ixgb_fc_tx_pause,
|
|
.arg = { .l = { .nr = ARRAY_SIZE(fc_list),
|
|
.p = fc_list }}
|
|
};
|
|
|
|
if (num_FlowControl > bd) {
|
|
unsigned int fc = FlowControl[bd];
|
|
ixgb_validate_option(&fc, &opt);
|
|
adapter->hw.fc.type = fc;
|
|
} else {
|
|
adapter->hw.fc.type = opt.def;
|
|
}
|
|
}
|
|
{ /* Receive Flow Control High Threshold */
|
|
static const struct ixgb_option opt = {
|
|
.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}}
|
|
};
|
|
|
|
if (num_RxFCHighThresh > bd) {
|
|
adapter->hw.fc.high_water = RxFCHighThresh[bd];
|
|
ixgb_validate_option(&adapter->hw.fc.high_water, &opt);
|
|
} else {
|
|
adapter->hw.fc.high_water = opt.def;
|
|
}
|
|
if (!(adapter->hw.fc.type & ixgb_fc_tx_pause) )
|
|
pr_info("Ignoring RxFCHighThresh when no RxFC\n");
|
|
}
|
|
{ /* Receive Flow Control Low Threshold */
|
|
static const struct ixgb_option opt = {
|
|
.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}}
|
|
};
|
|
|
|
if (num_RxFCLowThresh > bd) {
|
|
adapter->hw.fc.low_water = RxFCLowThresh[bd];
|
|
ixgb_validate_option(&adapter->hw.fc.low_water, &opt);
|
|
} else {
|
|
adapter->hw.fc.low_water = opt.def;
|
|
}
|
|
if (!(adapter->hw.fc.type & ixgb_fc_tx_pause) )
|
|
pr_info("Ignoring RxFCLowThresh when no RxFC\n");
|
|
}
|
|
{ /* Flow Control Pause Time Request*/
|
|
static const struct ixgb_option opt = {
|
|
.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}}
|
|
};
|
|
|
|
if (num_FCReqTimeout > bd) {
|
|
unsigned int pause_time = FCReqTimeout[bd];
|
|
ixgb_validate_option(&pause_time, &opt);
|
|
adapter->hw.fc.pause_time = pause_time;
|
|
} else {
|
|
adapter->hw.fc.pause_time = opt.def;
|
|
}
|
|
if (!(adapter->hw.fc.type & ixgb_fc_tx_pause) )
|
|
pr_info("Ignoring FCReqTimeout when no RxFC\n");
|
|
}
|
|
/* high low and spacing check for rx flow control thresholds */
|
|
if (adapter->hw.fc.type & ixgb_fc_tx_pause) {
|
|
/* high must be greater than low */
|
|
if (adapter->hw.fc.high_water < (adapter->hw.fc.low_water + 8)) {
|
|
/* set defaults */
|
|
pr_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 */
|
|
static const 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}}
|
|
};
|
|
|
|
if (num_RxIntDelay > bd) {
|
|
adapter->rx_int_delay = RxIntDelay[bd];
|
|
ixgb_validate_option(&adapter->rx_int_delay, &opt);
|
|
} else {
|
|
adapter->rx_int_delay = opt.def;
|
|
}
|
|
}
|
|
{ /* Transmit Interrupt Delay */
|
|
static const 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}}
|
|
};
|
|
|
|
if (num_TxIntDelay > bd) {
|
|
adapter->tx_int_delay = TxIntDelay[bd];
|
|
ixgb_validate_option(&adapter->tx_int_delay, &opt);
|
|
} else {
|
|
adapter->tx_int_delay = opt.def;
|
|
}
|
|
}
|
|
|
|
{ /* Transmit Interrupt Delay Enable */
|
|
static const struct ixgb_option opt = {
|
|
.type = enable_option,
|
|
.name = "Tx Interrupt Delay Enable",
|
|
.err = "defaulting to Enabled",
|
|
.def = OPTION_ENABLED
|
|
};
|
|
|
|
if (num_IntDelayEnable > bd) {
|
|
unsigned int ide = IntDelayEnable[bd];
|
|
ixgb_validate_option(&ide, &opt);
|
|
adapter->tx_int_delay_enable = ide;
|
|
} else {
|
|
adapter->tx_int_delay_enable = opt.def;
|
|
}
|
|
}
|
|
}
|