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Diffstat (limited to 'drivers/net/e1000e/param.c')
-rw-r--r--drivers/net/e1000e/param.c382
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diff --git a/drivers/net/e1000e/param.c b/drivers/net/e1000e/param.c
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+/*******************************************************************************
+
+ Intel PRO/1000 Linux driver
+ Copyright(c) 1999 - 2007 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
+
+*******************************************************************************/
+
+#include <linux/netdevice.h>
+
+#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
+
+#define COPYBREAK_DEFAULT 256
+unsigned int copybreak = COPYBREAK_DEFAULT;
+module_param(copybreak, uint, 0644);
+MODULE_PARM_DESC(copybreak,
+ "Maximum size of packet that is copied to a new buffer on receive");
+
+/* 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; \
+ module_param_array_named(X, X, int, &num_##X, 0); \
+ MODULE_PARM_DESC(X, desc);
+
+
+/* Transmit Interrupt Delay in units of 1.024 microseconds
+ * Tx interrupt delay needs to typically be set to something non zero
+ *
+ * Valid Range: 0-65535
+ */
+E1000_PARAM(TxIntDelay, "Transmit Interrupt Delay");
+#define DEFAULT_TIDV 8
+#define MAX_TXDELAY 0xFFFF
+#define MIN_TXDELAY 0
+
+/* Transmit Absolute Interrupt Delay in units of 1.024 microseconds
+ *
+ * Valid Range: 0-65535
+ */
+E1000_PARAM(TxAbsIntDelay, "Transmit Absolute Interrupt Delay");
+#define DEFAULT_TADV 32
+#define MAX_TXABSDELAY 0xFFFF
+#define MIN_TXABSDELAY 0
+
+/* Receive Interrupt Delay in units of 1.024 microseconds
+ * hardware will likely hang if you set this to anything but zero.
+ *
+ * Valid Range: 0-65535
+ */
+E1000_PARAM(RxIntDelay, "Receive Interrupt Delay");
+#define DEFAULT_RDTR 0
+#define MAX_RXDELAY 0xFFFF
+#define MIN_RXDELAY 0
+
+/* Receive Absolute Interrupt Delay in units of 1.024 microseconds
+ *
+ * Valid Range: 0-65535
+ */
+E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay");
+#define DEFAULT_RADV 8
+#define MAX_RXABSDELAY 0xFFFF
+#define MIN_RXABSDELAY 0
+
+/* Interrupt Throttle Rate (interrupts/sec)
+ *
+ * Valid Range: 100-100000 (0=off, 1=dynamic, 3=dynamic conservative)
+ */
+E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate");
+#define DEFAULT_ITR 3
+#define MAX_ITR 100000
+#define MIN_ITR 100
+
+/* Enable Smart Power Down of the PHY
+ *
+ * Valid Range: 0, 1
+ *
+ * Default Value: 0 (disabled)
+ */
+E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down");
+
+/* Enable Kumeran Lock Loss workaround
+ *
+ * Valid Range: 0, 1
+ *
+ * Default Value: 1 (enabled)
+ */
+E1000_PARAM(KumeranLockLoss, "Enable Kumeran lock loss workaround");
+
+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:
+ ndev_info(adapter->netdev, "%s Enabled\n", opt->name);
+ return 0;
+ case OPTION_DISABLED:
+ ndev_info(adapter->netdev, "%s Disabled\n", opt->name);
+ return 0;
+ }
+ break;
+ case range_option:
+ if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
+ ndev_info(adapter->netdev,
+ "%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')
+ ndev_info(adapter->netdev, "%s\n",
+ ent->str);
+ return 0;
+ }
+ }
+ }
+ break;
+ default:
+ BUG();
+ }
+
+ ndev_info(adapter->netdev, "Invalid %s value specified (%i) %s\n",
+ opt->name, *value, opt->err);
+ *value = opt->def;
+ return -1;
+}
+
+/**
+ * e1000e_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 e1000e_check_options(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+ int bd = adapter->bd_number;
+
+ if (bd >= E1000_MAX_NIC) {
+ ndev_notice(netdev,
+ "Warning: no configuration for board #%i\n", bd);
+ ndev_notice(netdev, "Using defaults for all values\n");
+ }
+
+ { /* 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 } }
+ };
+
+ /* modify min and default if 82573 for slow ping w/a,
+ * a value greater than 8 needs to be set for RDTR */
+ if (adapter->flags & FLAG_HAS_ASPM) {
+ opt.def = 32;
+ opt.arg.r.min = 8;
+ }
+
+ 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:
+ ndev_info(netdev, "%s turned off\n",
+ opt.name);
+ break;
+ case 1:
+ ndev_info(netdev,
+ "%s set to dynamic mode\n",
+ opt.name);
+ adapter->itr_setting = adapter->itr;
+ adapter->itr = 20000;
+ break;
+ case 3:
+ ndev_info(netdev,
+ "%s set to dynamic conservative mode\n",
+ opt.name);
+ adapter->itr_setting = adapter->itr;
+ adapter->itr = 20000;
+ break;
+ default:
+ e1000_validate_option(&adapter->itr, &opt,
+ adapter);
+ /*
+ * save the setting, because the dynamic bits
+ * change itr. clear the lower two bits
+ * because they are used as control
+ */
+ adapter->itr_setting = adapter->itr & ~3;
+ break;
+ }
+ } else {
+ adapter->itr_setting = opt.def;
+ adapter->itr = 20000;
+ }
+ }
+ { /* Smart Power Down */
+ struct e1000_option opt = {
+ .type = enable_option,
+ .name = "PHY Smart Power Down",
+ .err = "defaulting to Disabled",
+ .def = OPTION_DISABLED
+ };
+
+ if (num_SmartPowerDownEnable > bd) {
+ int spd = SmartPowerDownEnable[bd];
+ e1000_validate_option(&spd, &opt, adapter);
+ if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN)
+ && spd)
+ adapter->flags |= FLAG_SMART_POWER_DOWN;
+ }
+ }
+ { /* Kumeran Lock Loss Workaround */
+ struct e1000_option opt = {
+ .type = enable_option,
+ .name = "Kumeran Lock Loss Workaround",
+ .err = "defaulting to Enabled",
+ .def = OPTION_ENABLED
+ };
+
+ if (num_KumeranLockLoss > bd) {
+ int kmrn_lock_loss = KumeranLockLoss[bd];
+ e1000_validate_option(&kmrn_lock_loss, &opt, adapter);
+ if (hw->mac.type == e1000_ich8lan)
+ e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw,
+ kmrn_lock_loss);
+ } else {
+ if (hw->mac.type == e1000_ich8lan)
+ e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw,
+ opt.def);
+ }
+ }
+}
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