aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/atl1/atl1_param.c
blob: bcd0bd8917226a3e5f13f9735b81cc41954e58ea (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
/*
 * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
 * Copyright(c) 2006 Chris Snook <csnook@redhat.com>
 * Copyright(c) 2006 Jay Cliburn <jcliburn@gmail.com>
 *
 * Derived from Intel e1000 driver
 * 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.
 */

#include <linux/types.h>
#include <linux/moduleparam.h>
#include "atl1.h"

/*
 * This is the only thing that needs to be changed to adjust the
 * maximum number of ports that the driver can manage.
 */
#define ATL1_MAX_NIC 4

#define OPTION_UNSET    -1
#define OPTION_DISABLED 0
#define OPTION_ENABLED  1

#define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET }

/*
 * Interrupt Moderate Timer in units of 2 us
 *
 * Valid Range: 10-65535
 *
 * Default Value: 100 (200us)
 */
static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
static int num_int_mod_timer = 0;
module_param_array_named(int_mod_timer, int_mod_timer, int, &num_int_mod_timer, 0);
MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");

/*
 * flash_vendor
 *
 * Valid Range: 0-2
 *
 * 0 - Atmel
 * 1 - SST
 * 2 - ST
 *
 * Default Value: 0
 */
static int __devinitdata flash_vendor[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
static int num_flash_vendor = 0;
module_param_array_named(flash_vendor, flash_vendor, int, &num_flash_vendor, 0);
MODULE_PARM_DESC(flash_vendor, "SPI flash vendor");

#define DEFAULT_INT_MOD_CNT	100	/* 200us */
#define MAX_INT_MOD_CNT		65000
#define MIN_INT_MOD_CNT		50

#define FLASH_VENDOR_DEFAULT	0
#define FLASH_VENDOR_MIN	0
#define FLASH_VENDOR_MAX	2

struct atl1_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 atl1_opt_list {
				int i;
				char *str;
			} *p;
		} l;
	} arg;
};

static int __devinit atl1_validate_option(int *value, struct atl1_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: %s Enabled\n", atl1_driver_name,
				opt->name);
			return 0;
		case OPTION_DISABLED:
			printk(KERN_INFO "%s: %s Disabled\n", atl1_driver_name,
				opt->name);
			return 0;
		}
		break;
	case range_option:
		if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
			printk(KERN_INFO "%s: %s set to %i\n",
				atl1_driver_name, opt->name, *value);
			return 0;
		}
		break;
	case list_option:{
			int i;
			struct atl1_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: %s\n",
						       atl1_driver_name, ent->str);
					return 0;
				}
			}
		}
		break;

	default:
		break;
	}

	printk(KERN_INFO "%s: invalid %s specified (%i) %s\n",
	       atl1_driver_name, opt->name, *value, opt->err);
	*value = opt->def;
	return -1;
}

/*
 * atl1_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 atl1_check_options(struct atl1_adapter *adapter)
{
	int bd = adapter->bd_number;
	if (bd >= ATL1_MAX_NIC) {
		printk(KERN_NOTICE "%s: warning: no configuration for board #%i\n",
			atl1_driver_name, bd);
		printk(KERN_NOTICE "%s: using defaults for all values\n",
			atl1_driver_name);
	}
	{			/* Interrupt Moderate Timer */
		struct atl1_option opt = {
			.type = range_option,
			.name = "Interrupt Moderator Timer",
			.err = "using default of "
				__MODULE_STRING(DEFAULT_INT_MOD_CNT),
			.def = DEFAULT_INT_MOD_CNT,
			.arg = {.r =
				{.min = MIN_INT_MOD_CNT,.max = MAX_INT_MOD_CNT}}
		};
		int val;
		if (num_int_mod_timer > bd) {
			val = int_mod_timer[bd];
			atl1_validate_option(&val, &opt);
			adapter->imt = (u16) val;
		} else
			adapter->imt = (u16) (opt.def);
	}

	{			/* Flash Vendor */
		struct atl1_option opt = {
			.type = range_option,
			.name = "SPI Flash Vendor",
			.err = "using default of "
				__MODULE_STRING(FLASH_VENDOR_DEFAULT),
			.def = DEFAULT_INT_MOD_CNT,
			.arg = {.r =
				{.min = FLASH_VENDOR_MIN,.max =
				 FLASH_VENDOR_MAX}}
		};
		int val;
		if (num_flash_vendor > bd) {
			val = flash_vendor[bd];
			atl1_validate_option(&val, &opt);
			adapter->hw.flash_vendor = (u8) val;
		} else
			adapter->hw.flash_vendor = (u8) (opt.def);
	}
}