1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
4 *
5 * Derived from Intel e1000 driver
6 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
7 */
8
9 #include <linux/netdevice.h>
10
11 #include "atl1e.h"
12
13 /* This is the only thing that needs to be changed to adjust the
14 * maximum number of ports that the driver can manage.
15 */
16
17 #define ATL1E_MAX_NIC 32
18
19 #define OPTION_UNSET -1
20 #define OPTION_DISABLED 0
21 #define OPTION_ENABLED 1
22
23 /* All parameters are treated the same, as an integer array of values.
24 * This macro just reduces the need to repeat the same declaration code
25 * over and over (plus this helps to avoid typo bugs).
26 */
27 #define ATL1E_PARAM_INIT { [0 ... ATL1E_MAX_NIC] = OPTION_UNSET }
28
29 #define ATL1E_PARAM(x, desc) \
30 static int x[ATL1E_MAX_NIC + 1] = ATL1E_PARAM_INIT; \
31 static unsigned int num_##x; \
32 module_param_array_named(x, x, int, &num_##x, 0); \
33 MODULE_PARM_DESC(x, desc);
34
35 /* Transmit Memory count
36 *
37 * Valid Range: 64-2048
38 *
39 * Default Value: 128
40 */
41 #define ATL1E_MIN_TX_DESC_CNT 32
42 #define ATL1E_MAX_TX_DESC_CNT 1020
43 #define ATL1E_DEFAULT_TX_DESC_CNT 128
44 ATL1E_PARAM(tx_desc_cnt, "Transmit description count");
45
46 /* Receive Memory Block Count
47 *
48 * Valid Range: 16-512
49 *
50 * Default Value: 128
51 */
52 #define ATL1E_MIN_RX_MEM_SIZE 8 /* 8KB */
53 #define ATL1E_MAX_RX_MEM_SIZE 1024 /* 1MB */
54 #define ATL1E_DEFAULT_RX_MEM_SIZE 256 /* 128KB */
55 ATL1E_PARAM(rx_mem_size, "memory size of rx buffer(KB)");
56
57 /* User Specified MediaType Override
58 *
59 * Valid Range: 0-5
60 * - 0 - auto-negotiate at all supported speeds
61 * - 1 - only link at 100Mbps Full Duplex
62 * - 2 - only link at 100Mbps Half Duplex
63 * - 3 - only link at 10Mbps Full Duplex
64 * - 4 - only link at 10Mbps Half Duplex
65 * Default Value: 0
66 */
67
68 ATL1E_PARAM(media_type, "MediaType Select");
69
70 /* Interrupt Moderate Timer in units of 2 us
71 *
72 * Valid Range: 10-65535
73 *
74 * Default Value: 45000(90ms)
75 */
76 #define INT_MOD_DEFAULT_CNT 100 /* 200us */
77 #define INT_MOD_MAX_CNT 65000
78 #define INT_MOD_MIN_CNT 50
79 ATL1E_PARAM(int_mod_timer, "Interrupt Moderator Timer");
80
81 #define AUTONEG_ADV_DEFAULT 0x2F
82 #define AUTONEG_ADV_MASK 0x2F
83 #define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
84
85 #define FLASH_VENDOR_DEFAULT 0
86 #define FLASH_VENDOR_MIN 0
87 #define FLASH_VENDOR_MAX 2
88
89 struct atl1e_option {
90 enum { enable_option, range_option, list_option } type;
91 char *name;
92 char *err;
93 int def;
94 union {
95 struct { /* range_option info */
96 int min;
97 int max;
98 } r;
99 struct { /* list_option info */
100 int nr;
101 struct atl1e_opt_list { int i; char *str; } *p;
102 } l;
103 } arg;
104 };
105
atl1e_validate_option(int * value,struct atl1e_option * opt,struct atl1e_adapter * adapter)106 static int atl1e_validate_option(int *value, struct atl1e_option *opt,
107 struct atl1e_adapter *adapter)
108 {
109 if (*value == OPTION_UNSET) {
110 *value = opt->def;
111 return 0;
112 }
113
114 switch (opt->type) {
115 case enable_option:
116 switch (*value) {
117 case OPTION_ENABLED:
118 netdev_info(adapter->netdev,
119 "%s Enabled\n", opt->name);
120 return 0;
121 case OPTION_DISABLED:
122 netdev_info(adapter->netdev,
123 "%s Disabled\n", opt->name);
124 return 0;
125 }
126 break;
127 case range_option:
128 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
129 netdev_info(adapter->netdev, "%s set to %i\n",
130 opt->name, *value);
131 return 0;
132 }
133 break;
134 case list_option:{
135 int i;
136 struct atl1e_opt_list *ent;
137
138 for (i = 0; i < opt->arg.l.nr; i++) {
139 ent = &opt->arg.l.p[i];
140 if (*value == ent->i) {
141 if (ent->str[0] != '\0')
142 netdev_info(adapter->netdev,
143 "%s\n", ent->str);
144 return 0;
145 }
146 }
147 break;
148 }
149 default:
150 BUG();
151 }
152
153 netdev_info(adapter->netdev, "Invalid %s specified (%i) %s\n",
154 opt->name, *value, opt->err);
155 *value = opt->def;
156 return -1;
157 }
158
159 /**
160 * atl1e_check_options - Range Checking for Command Line Parameters
161 * @adapter: board private structure
162 *
163 * This routine checks all command line parameters for valid user
164 * input. If an invalid value is given, or if no user specified
165 * value exists, a default value is used. The final value is stored
166 * in a variable in the adapter structure.
167 */
atl1e_check_options(struct atl1e_adapter * adapter)168 void atl1e_check_options(struct atl1e_adapter *adapter)
169 {
170 int bd = adapter->bd_number;
171
172 if (bd >= ATL1E_MAX_NIC) {
173 netdev_notice(adapter->netdev,
174 "no configuration for board #%i\n", bd);
175 netdev_notice(adapter->netdev,
176 "Using defaults for all values\n");
177 }
178
179 { /* Transmit Ring Size */
180 struct atl1e_option opt = {
181 .type = range_option,
182 .name = "Transmit Ddescription Count",
183 .err = "using default of "
184 __MODULE_STRING(ATL1E_DEFAULT_TX_DESC_CNT),
185 .def = ATL1E_DEFAULT_TX_DESC_CNT,
186 .arg = { .r = { .min = ATL1E_MIN_TX_DESC_CNT,
187 .max = ATL1E_MAX_TX_DESC_CNT} }
188 };
189 int val;
190 if (num_tx_desc_cnt > bd) {
191 val = tx_desc_cnt[bd];
192 atl1e_validate_option(&val, &opt, adapter);
193 adapter->tx_ring.count = (u16) val & 0xFFFC;
194 } else
195 adapter->tx_ring.count = (u16)opt.def;
196 }
197
198 { /* Receive Memory Block Count */
199 struct atl1e_option opt = {
200 .type = range_option,
201 .name = "Memory size of rx buffer(KB)",
202 .err = "using default of "
203 __MODULE_STRING(ATL1E_DEFAULT_RX_MEM_SIZE),
204 .def = ATL1E_DEFAULT_RX_MEM_SIZE,
205 .arg = { .r = { .min = ATL1E_MIN_RX_MEM_SIZE,
206 .max = ATL1E_MAX_RX_MEM_SIZE} }
207 };
208 int val;
209 if (num_rx_mem_size > bd) {
210 val = rx_mem_size[bd];
211 atl1e_validate_option(&val, &opt, adapter);
212 adapter->rx_ring.page_size = (u32)val * 1024;
213 } else {
214 adapter->rx_ring.page_size = (u32)opt.def * 1024;
215 }
216 }
217
218 { /* Interrupt Moderate Timer */
219 struct atl1e_option opt = {
220 .type = range_option,
221 .name = "Interrupt Moderate Timer",
222 .err = "using default of "
223 __MODULE_STRING(INT_MOD_DEFAULT_CNT),
224 .def = INT_MOD_DEFAULT_CNT,
225 .arg = { .r = { .min = INT_MOD_MIN_CNT,
226 .max = INT_MOD_MAX_CNT} }
227 } ;
228 int val;
229 if (num_int_mod_timer > bd) {
230 val = int_mod_timer[bd];
231 atl1e_validate_option(&val, &opt, adapter);
232 adapter->hw.imt = (u16) val;
233 } else
234 adapter->hw.imt = (u16)(opt.def);
235 }
236
237 { /* MediaType */
238 struct atl1e_option opt = {
239 .type = range_option,
240 .name = "Speed/Duplex Selection",
241 .err = "using default of "
242 __MODULE_STRING(MEDIA_TYPE_AUTO_SENSOR),
243 .def = MEDIA_TYPE_AUTO_SENSOR,
244 .arg = { .r = { .min = MEDIA_TYPE_AUTO_SENSOR,
245 .max = MEDIA_TYPE_10M_HALF} }
246 } ;
247 int val;
248 if (num_media_type > bd) {
249 val = media_type[bd];
250 atl1e_validate_option(&val, &opt, adapter);
251 adapter->hw.media_type = (u16) val;
252 } else
253 adapter->hw.media_type = (u16)(opt.def);
254
255 }
256 }
257