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-rw-r--r--drivers/net/atl1/atl1_param.c206
1 files changed, 206 insertions, 0 deletions
diff --git a/drivers/net/atl1/atl1_param.c b/drivers/net/atl1/atl1_param.c
new file mode 100644
index 000000000000..c407214339f6
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+++ b/drivers/net/atl1/atl1_param.c
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1/*
2 * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
3 * Copyright(c) 2006 Chris Snook <csnook@redhat.com>
4 * Copyright(c) 2006 Jay Cliburn <jcliburn@gmail.com>
5 *
6 * Derived from Intel e1000 driver
7 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License along with
20 * this program; if not, write to the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 */
23
24#include <linux/types.h>
25#include <linux/pci.h>
26#include <linux/moduleparam.h>
27#include "atl1.h"
28
29/*
30 * This is the only thing that needs to be changed to adjust the
31 * maximum number of ports that the driver can manage.
32 */
33#define ATL1_MAX_NIC 4
34
35#define OPTION_UNSET -1
36#define OPTION_DISABLED 0
37#define OPTION_ENABLED 1
38
39#define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET }
40
41/*
42 * Interrupt Moderate Timer in units of 2 us
43 *
44 * Valid Range: 10-65535
45 *
46 * Default Value: 100 (200us)
47 */
48static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
49static int num_int_mod_timer = 0;
50module_param_array_named(int_mod_timer, int_mod_timer, int, &num_int_mod_timer, 0);
51MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");
52
53/*
54 * flash_vendor
55 *
56 * Valid Range: 0-2
57 *
58 * 0 - Atmel
59 * 1 - SST
60 * 2 - ST
61 *
62 * Default Value: 0
63 */
64static int __devinitdata flash_vendor[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
65static int num_flash_vendor = 0;
66module_param_array_named(flash_vendor, flash_vendor, int, &num_flash_vendor, 0);
67MODULE_PARM_DESC(flash_vendor, "SPI flash vendor");
68
69#define DEFAULT_INT_MOD_CNT 100 /* 200us */
70#define MAX_INT_MOD_CNT 65000
71#define MIN_INT_MOD_CNT 50
72
73#define FLASH_VENDOR_DEFAULT 0
74#define FLASH_VENDOR_MIN 0
75#define FLASH_VENDOR_MAX 2
76
77struct atl1_option {
78 enum { enable_option, range_option, list_option } type;
79 char *name;
80 char *err;
81 int def;
82 union {
83 struct { /* range_option info */
84 int min;
85 int max;
86 } r;
87 struct { /* list_option info */
88 int nr;
89 struct atl1_opt_list {
90 int i;
91 char *str;
92 } *p;
93 } l;
94 } arg;
95};
96
97static int __devinit atl1_validate_option(int *value, struct atl1_option *opt)
98{
99 if (*value == OPTION_UNSET) {
100 *value = opt->def;
101 return 0;
102 }
103
104 switch (opt->type) {
105 case enable_option:
106 switch (*value) {
107 case OPTION_ENABLED:
108 printk(KERN_INFO "%s: %s Enabled\n", atl1_driver_name,
109 opt->name);
110 return 0;
111 case OPTION_DISABLED:
112 printk(KERN_INFO "%s: %s Disabled\n", atl1_driver_name,
113 opt->name);
114 return 0;
115 }
116 break;
117 case range_option:
118 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
119 printk(KERN_INFO "%s: %s set to %i\n",
120 atl1_driver_name, opt->name, *value);
121 return 0;
122 }
123 break;
124 case list_option:{
125 int i;
126 struct atl1_opt_list *ent;
127
128 for (i = 0; i < opt->arg.l.nr; i++) {
129 ent = &opt->arg.l.p[i];
130 if (*value == ent->i) {
131 if (ent->str[0] != '\0')
132 printk(KERN_INFO "%s: %s\n",
133 atl1_driver_name, ent->str);
134 return 0;
135 }
136 }
137 }
138 break;
139
140 default:
141 break;
142 }
143
144 printk(KERN_INFO "%s: invalid %s specified (%i) %s\n",
145 atl1_driver_name, opt->name, *value, opt->err);
146 *value = opt->def;
147 return -1;
148}
149
150/*
151 * atl1_check_options - Range Checking for Command Line Parameters
152 * @adapter: board private structure
153 *
154 * This routine checks all command line parameters for valid user
155 * input. If an invalid value is given, or if no user specified
156 * value exists, a default value is used. The final value is stored
157 * in a variable in the adapter structure.
158 */
159void __devinit atl1_check_options(struct atl1_adapter *adapter)
160{
161 int bd = adapter->bd_number;
162 if (bd >= ATL1_MAX_NIC) {
163 printk(KERN_NOTICE "%s: warning: no configuration for board #%i\n",
164 atl1_driver_name, bd);
165 printk(KERN_NOTICE "%s: using defaults for all values\n",
166 atl1_driver_name);
167 }
168 { /* Interrupt Moderate Timer */
169 struct atl1_option opt = {
170 .type = range_option,
171 .name = "Interrupt Moderator Timer",
172 .err = "using default of "
173 __MODULE_STRING(DEFAULT_INT_MOD_CNT),
174 .def = DEFAULT_INT_MOD_CNT,
175 .arg = {.r =
176 {.min = MIN_INT_MOD_CNT,.max = MAX_INT_MOD_CNT}}
177 };
178 int val;
179 if (num_int_mod_timer > bd) {
180 val = int_mod_timer[bd];
181 atl1_validate_option(&val, &opt);
182 adapter->imt = (u16) val;
183 } else
184 adapter->imt = (u16) (opt.def);
185 }
186
187 { /* Flash Vendor */
188 struct atl1_option opt = {
189 .type = range_option,
190 .name = "SPI Flash Vendor",
191 .err = "using default of "
192 __MODULE_STRING(FLASH_VENDOR_DEFAULT),
193 .def = DEFAULT_INT_MOD_CNT,
194 .arg = {.r =
195 {.min = FLASH_VENDOR_MIN,.max =
196 FLASH_VENDOR_MAX}}
197 };
198 int val;
199 if (num_flash_vendor > bd) {
200 val = flash_vendor[bd];
201 atl1_validate_option(&val, &opt);
202 adapter->hw.flash_vendor = (u8) val;
203 } else
204 adapter->hw.flash_vendor = (u8) (opt.def);
205 }
206}
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