1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2008 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #include <linux/netdevice.h>
30 #include <linux/pci.h>
35 * This is the only thing that needs to be changed to adjust the
36 * maximum number of ports that the driver can manage.
39 #define E1000_MAX_NIC 32
41 #define OPTION_UNSET -1
42 #define OPTION_DISABLED 0
43 #define OPTION_ENABLED 1
45 #define COPYBREAK_DEFAULT 256
46 unsigned int copybreak = COPYBREAK_DEFAULT;
47 module_param(copybreak, uint, 0644);
48 MODULE_PARM_DESC(copybreak,
49 "Maximum size of packet that is copied to a new buffer on receive");
52 * All parameters are treated the same, as an integer array of values.
53 * This macro just reduces the need to repeat the same declaration code
54 * over and over (plus this helps to avoid typo bugs).
57 #define E1000_PARAM_INIT { [0 ... E1000_MAX_NIC] = OPTION_UNSET }
58 #define E1000_PARAM(X, desc) \
59 static int __devinitdata X[E1000_MAX_NIC+1] \
61 static unsigned int num_##X; \
62 module_param_array_named(X, X, int, &num_##X, 0); \
63 MODULE_PARM_DESC(X, desc);
67 * Transmit Interrupt Delay in units of 1.024 microseconds
68 * Tx interrupt delay needs to typically be set to something non zero
70 * Valid Range: 0-65535
72 E1000_PARAM(TxIntDelay, "Transmit Interrupt Delay");
73 #define DEFAULT_TIDV 8
74 #define MAX_TXDELAY 0xFFFF
78 * Transmit Absolute Interrupt Delay in units of 1.024 microseconds
80 * Valid Range: 0-65535
82 E1000_PARAM(TxAbsIntDelay, "Transmit Absolute Interrupt Delay");
83 #define DEFAULT_TADV 32
84 #define MAX_TXABSDELAY 0xFFFF
85 #define MIN_TXABSDELAY 0
88 * Receive Interrupt Delay in units of 1.024 microseconds
89 * hardware will likely hang if you set this to anything but zero.
91 * Valid Range: 0-65535
93 E1000_PARAM(RxIntDelay, "Receive Interrupt Delay");
94 #define DEFAULT_RDTR 0
95 #define MAX_RXDELAY 0xFFFF
99 * Receive Absolute Interrupt Delay in units of 1.024 microseconds
101 * Valid Range: 0-65535
103 E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay");
104 #define DEFAULT_RADV 8
105 #define MAX_RXABSDELAY 0xFFFF
106 #define MIN_RXABSDELAY 0
109 * Interrupt Throttle Rate (interrupts/sec)
111 * Valid Range: 100-100000 (0=off, 1=dynamic, 3=dynamic conservative)
113 E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate");
114 #define DEFAULT_ITR 3
115 #define MAX_ITR 100000
119 * Enable Smart Power Down of the PHY
123 * Default Value: 0 (disabled)
125 E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down");
128 * Enable Kumeran Lock Loss workaround
132 * Default Value: 1 (enabled)
134 E1000_PARAM(KumeranLockLoss, "Enable Kumeran lock loss workaround");
136 struct e1000_option {
137 enum { enable_option, range_option, list_option } type;
142 struct { /* range_option info */
146 struct { /* list_option info */
148 struct e1000_opt_list { int i; char *str; } *p;
153 static int __devinit e1000_validate_option(unsigned int *value,
154 const struct e1000_option *opt,
155 struct e1000_adapter *adapter)
157 if (*value == OPTION_UNSET) {
166 e_info("%s Enabled\n", opt->name);
168 case OPTION_DISABLED:
169 e_info("%s Disabled\n", opt->name);
174 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
175 e_info("%s set to %i\n", opt->name, *value);
181 struct e1000_opt_list *ent;
183 for (i = 0; i < opt->arg.l.nr; i++) {
184 ent = &opt->arg.l.p[i];
185 if (*value == ent->i) {
186 if (ent->str[0] != '\0')
187 e_info("%s\n", ent->str);
197 e_info("Invalid %s value specified (%i) %s\n", opt->name, *value,
204 * e1000e_check_options - Range Checking for Command Line Parameters
205 * @adapter: board private structure
207 * This routine checks all command line parameters for valid user
208 * input. If an invalid value is given, or if no user specified
209 * value exists, a default value is used. The final value is stored
210 * in a variable in the adapter structure.
212 void __devinit e1000e_check_options(struct e1000_adapter *adapter)
214 struct e1000_hw *hw = &adapter->hw;
215 int bd = adapter->bd_number;
217 if (bd >= E1000_MAX_NIC) {
218 e_notice("Warning: no configuration for board #%i\n", bd);
219 e_notice("Using defaults for all values\n");
222 { /* Transmit Interrupt Delay */
223 const struct e1000_option opt = {
224 .type = range_option,
225 .name = "Transmit Interrupt Delay",
226 .err = "using default of "
227 __MODULE_STRING(DEFAULT_TIDV),
229 .arg = { .r = { .min = MIN_TXDELAY,
230 .max = MAX_TXDELAY } }
233 if (num_TxIntDelay > bd) {
234 adapter->tx_int_delay = TxIntDelay[bd];
235 e1000_validate_option(&adapter->tx_int_delay, &opt,
238 adapter->tx_int_delay = opt.def;
241 { /* Transmit Absolute Interrupt Delay */
242 const struct e1000_option opt = {
243 .type = range_option,
244 .name = "Transmit Absolute Interrupt Delay",
245 .err = "using default of "
246 __MODULE_STRING(DEFAULT_TADV),
248 .arg = { .r = { .min = MIN_TXABSDELAY,
249 .max = MAX_TXABSDELAY } }
252 if (num_TxAbsIntDelay > bd) {
253 adapter->tx_abs_int_delay = TxAbsIntDelay[bd];
254 e1000_validate_option(&adapter->tx_abs_int_delay, &opt,
257 adapter->tx_abs_int_delay = opt.def;
260 { /* Receive Interrupt Delay */
261 struct e1000_option opt = {
262 .type = range_option,
263 .name = "Receive Interrupt Delay",
264 .err = "using default of "
265 __MODULE_STRING(DEFAULT_RDTR),
267 .arg = { .r = { .min = MIN_RXDELAY,
268 .max = MAX_RXDELAY } }
271 if (num_RxIntDelay > bd) {
272 adapter->rx_int_delay = RxIntDelay[bd];
273 e1000_validate_option(&adapter->rx_int_delay, &opt,
276 adapter->rx_int_delay = opt.def;
279 { /* Receive Absolute Interrupt Delay */
280 const struct e1000_option opt = {
281 .type = range_option,
282 .name = "Receive Absolute Interrupt Delay",
283 .err = "using default of "
284 __MODULE_STRING(DEFAULT_RADV),
286 .arg = { .r = { .min = MIN_RXABSDELAY,
287 .max = MAX_RXABSDELAY } }
290 if (num_RxAbsIntDelay > bd) {
291 adapter->rx_abs_int_delay = RxAbsIntDelay[bd];
292 e1000_validate_option(&adapter->rx_abs_int_delay, &opt,
295 adapter->rx_abs_int_delay = opt.def;
298 { /* Interrupt Throttling Rate */
299 const struct e1000_option opt = {
300 .type = range_option,
301 .name = "Interrupt Throttling Rate (ints/sec)",
302 .err = "using default of "
303 __MODULE_STRING(DEFAULT_ITR),
305 .arg = { .r = { .min = MIN_ITR,
309 if (num_InterruptThrottleRate > bd) {
310 adapter->itr = InterruptThrottleRate[bd];
311 switch (adapter->itr) {
313 e_info("%s turned off\n", opt.name);
316 e_info("%s set to dynamic mode\n", opt.name);
317 adapter->itr_setting = adapter->itr;
318 adapter->itr = 20000;
321 e_info("%s set to dynamic conservative mode\n",
323 adapter->itr_setting = adapter->itr;
324 adapter->itr = 20000;
327 e1000_validate_option(&adapter->itr, &opt,
330 * save the setting, because the dynamic bits
331 * change itr. clear the lower two bits
332 * because they are used as control
334 adapter->itr_setting = adapter->itr & ~3;
338 adapter->itr_setting = opt.def;
339 adapter->itr = 20000;
342 { /* Smart Power Down */
343 const struct e1000_option opt = {
344 .type = enable_option,
345 .name = "PHY Smart Power Down",
346 .err = "defaulting to Disabled",
347 .def = OPTION_DISABLED
350 if (num_SmartPowerDownEnable > bd) {
351 unsigned int spd = SmartPowerDownEnable[bd];
352 e1000_validate_option(&spd, &opt, adapter);
353 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN)
355 adapter->flags |= FLAG_SMART_POWER_DOWN;
358 { /* Kumeran Lock Loss Workaround */
359 const struct e1000_option opt = {
360 .type = enable_option,
361 .name = "Kumeran Lock Loss Workaround",
362 .err = "defaulting to Enabled",
363 .def = OPTION_ENABLED
366 if (num_KumeranLockLoss > bd) {
367 unsigned int kmrn_lock_loss = KumeranLockLoss[bd];
368 e1000_validate_option(&kmrn_lock_loss, &opt, adapter);
369 if (hw->mac.type == e1000_ich8lan)
370 e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw,
373 if (hw->mac.type == e1000_ich8lan)
374 e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw,