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path: root/drivers/net/ixgb/ixgb_param.c
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Diffstat (limited to 'drivers/net/ixgb/ixgb_param.c')
-rw-r--r--drivers/net/ixgb/ixgb_param.c476
1 files changed, 476 insertions, 0 deletions
diff --git a/drivers/net/ixgb/ixgb_param.c b/drivers/net/ixgb/ixgb_param.c
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index 000000000000..8a83dfdf746d
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+++ b/drivers/net/ixgb/ixgb_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 "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 __devinitdata X[IXGB_MAX_NIC+1] = IXGB_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: 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");
+
+/* 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: 256 (0x100)
+ */
+
+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 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 /* this may be too long */
+#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 info */
+ int min;
+ int max;
+ } r;
+ struct { /* list_option info */
+ 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\n", 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 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
+ixgb_check_options(struct ixgb_adapter *adapter)
+{
+ int bd = adapter->bd_number;
+ if(bd >= IXGB_MAX_NIC) {
+ printk(KERN_NOTICE
+ "Warning: no configuration for board #%i\n", bd);
+ printk(KERN_NOTICE "Using defaults for all values\n");
+ }
+
+ { /* 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;
+
+ if(num_TxDescriptors > bd) {
+ tx_ring->count = TxDescriptors[bd];
+ ixgb_validate_option(&tx_ring->count, &opt);
+ } else {
+ tx_ring->count = opt.def;
+ }
+ 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;
+
+ if(num_RxDescriptors > bd) {
+ rx_ring->count = RxDescriptors[bd];
+ ixgb_validate_option(&rx_ring->count, &opt);
+ } else {
+ rx_ring->count = opt.def;
+ }
+ 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
+ };
+
+ if(num_XsumRX > bd) {
+ int rx_csum = XsumRX[bd];
+ ixgb_validate_option(&rx_csum, &opt);
+ adapter->rx_csum = rx_csum;
+ } else {
+ adapter->rx_csum = opt.def;
+ }
+ }
+ { /* Flow Control */
+
+ 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" }};
+
+ 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 }}
+ };
+
+ if(num_FlowControl > bd) {
+ 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 */
+ 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_rx_pause) )
+ printk (KERN_INFO
+ "Ignoring RxFCHighThresh when no RxFC\n");
+ }
+ { /* Receive Flow Control Low Threshold */
+ 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_rx_pause) )
+ printk (KERN_INFO
+ "Ignoring RxFCLowThresh when no RxFC\n");
+ }
+ { /* Flow Control Pause Time Request*/
+ 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) {
+ 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_rx_pause) )
+ printk (KERN_INFO
+ "Ignoring FCReqTimeout when no RxFC\n");
+ }
+ /* 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}}
+ };
+
+ 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 */
+ 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 */
+ struct ixgb_option opt = {
+ .type = enable_option,
+ .name = "Tx Interrupt Delay Enable",
+ .err = "defaulting to Enabled",
+ .def = OPTION_ENABLED
+ };
+
+ if(num_IntDelayEnable > bd) {
+ int ide = IntDelayEnable[bd];
+ ixgb_validate_option(&ide, &opt);
+ adapter->tx_int_delay_enable = ide;
+ } else {
+ adapter->tx_int_delay_enable = opt.def;
+ }
+ }
+}
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