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
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
|
/*
* Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
* Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
/*************************************\
* Attach/Detach Functions and helpers *
\*************************************/
#include <linux/pci.h>
#include "ath5k.h"
#include "reg.h"
#include "debug.h"
#include "base.h"
/**
* ath5k_hw_post - Power On Self Test helper function
*
* @ah: The &struct ath5k_hw
*/
static int ath5k_hw_post(struct ath5k_hw *ah)
{
int i, c;
u16 cur_reg;
u16 regs[2] = {AR5K_STA_ID0, AR5K_PHY(8)};
u32 var_pattern;
u32 static_pattern[4] = {
0x55555555, 0xaaaaaaaa,
0x66666666, 0x99999999
};
u32 init_val;
u32 cur_val;
for (c = 0; c < 2; c++) {
cur_reg = regs[c];
/* Save previous value */
init_val = ath5k_hw_reg_read(ah, cur_reg);
for (i = 0; i < 256; i++) {
var_pattern = i << 16 | i;
ath5k_hw_reg_write(ah, var_pattern, cur_reg);
cur_val = ath5k_hw_reg_read(ah, cur_reg);
if (cur_val != var_pattern) {
ATH5K_ERR(ah->ah_sc, "POST Failed !!!\n");
return -EAGAIN;
}
/* Found on ndiswrapper dumps */
var_pattern = 0x0039080f;
ath5k_hw_reg_write(ah, var_pattern, cur_reg);
}
for (i = 0; i < 4; i++) {
var_pattern = static_pattern[i];
ath5k_hw_reg_write(ah, var_pattern, cur_reg);
cur_val = ath5k_hw_reg_read(ah, cur_reg);
if (cur_val != var_pattern) {
ATH5K_ERR(ah->ah_sc, "POST Failed !!!\n");
return -EAGAIN;
}
/* Found on ndiswrapper dumps */
var_pattern = 0x003b080f;
ath5k_hw_reg_write(ah, var_pattern, cur_reg);
}
/* Restore previous value */
ath5k_hw_reg_write(ah, init_val, cur_reg);
}
return 0;
}
/**
* ath5k_hw_attach - Check if hw is supported and init the needed structs
*
* @sc: The &struct ath5k_softc we got from the driver's attach function
* @mac_version: The mac version id (check out ath5k.h) based on pci id
*
* Check if the device is supported, perform a POST and initialize the needed
* structs. Returns -ENOMEM if we don't have memory for the needed structs,
* -ENODEV if the device is not supported or prints an error msg if something
* else went wrong.
*/
struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version)
{
struct ath5k_hw *ah;
struct pci_dev *pdev = sc->pdev;
u8 mac[ETH_ALEN];
int ret;
u32 srev;
/*If we passed the test malloc a ath5k_hw struct*/
ah = kzalloc(sizeof(struct ath5k_hw), GFP_KERNEL);
if (ah == NULL) {
ret = -ENOMEM;
ATH5K_ERR(sc, "out of memory\n");
goto err;
}
ah->ah_sc = sc;
ah->ah_iobase = sc->iobase;
/*
* HW information
*/
ah->ah_op_mode = NL80211_IFTYPE_STATION;
ah->ah_radar.r_enabled = AR5K_TUNE_RADAR_ALERT;
ah->ah_turbo = false;
ah->ah_txpower.txp_tpc = AR5K_TUNE_TPC_TXPOWER;
ah->ah_imr = 0;
ah->ah_atim_window = 0;
ah->ah_aifs = AR5K_TUNE_AIFS;
ah->ah_cw_min = AR5K_TUNE_CWMIN;
ah->ah_limit_tx_retries = AR5K_INIT_TX_RETRY;
ah->ah_software_retry = false;
ah->ah_ant_diversity = AR5K_TUNE_ANT_DIVERSITY;
/*
* Set the mac revision based on the pci id
*/
ah->ah_version = mac_version;
/*Fill the ath5k_hw struct with the needed functions*/
ret = ath5k_hw_init_desc_functions(ah);
if (ret)
goto err_free;
/* Bring device out of sleep and reset it's units */
ret = ath5k_hw_nic_wakeup(ah, CHANNEL_B, true);
if (ret)
goto err_free;
/* Get MAC, PHY and RADIO revisions */
srev = ath5k_hw_reg_read(ah, AR5K_SREV);
ah->ah_mac_srev = srev;
ah->ah_mac_version = AR5K_REG_MS(srev, AR5K_SREV_VER);
ah->ah_mac_revision = AR5K_REG_MS(srev, AR5K_SREV_REV);
ah->ah_phy_revision = ath5k_hw_reg_read(ah, AR5K_PHY_CHIP_ID) &
0xffffffff;
ah->ah_radio_5ghz_revision = ath5k_hw_radio_revision(ah,
CHANNEL_5GHZ);
if (ah->ah_version == AR5K_AR5210)
ah->ah_radio_2ghz_revision = 0;
else
ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
CHANNEL_2GHZ);
/* Return on unsuported chips (unsupported eeprom etc) */
if ((srev >= AR5K_SREV_VER_AR5416) &&
(srev < AR5K_SREV_VER_AR2425)) {
ATH5K_ERR(sc, "Device not yet supported.\n");
ret = -ENODEV;
goto err_free;
} else if (srev == AR5K_SREV_VER_AR2425) {
ATH5K_WARN(sc, "Support for RF2425 is under development.\n");
}
/* Identify single chip solutions */
if (((srev <= AR5K_SREV_VER_AR5414) &&
(srev >= AR5K_SREV_VER_AR2413)) ||
(srev == AR5K_SREV_VER_AR2425)) {
ah->ah_single_chip = true;
} else {
ah->ah_single_chip = false;
}
/* Single chip radio */
if (ah->ah_radio_2ghz_revision == ah->ah_radio_5ghz_revision)
ah->ah_radio_2ghz_revision = 0;
/* Identify the radio chip*/
if (ah->ah_version == AR5K_AR5210) {
ah->ah_radio = AR5K_RF5110;
/*
* Register returns 0x0/0x04 for radio revision
* so ath5k_hw_radio_revision doesn't parse the value
* correctly. For now we are based on mac's srev to
* identify RF2425 radio.
*/
} else if (srev == AR5K_SREV_VER_AR2425) {
ah->ah_radio = AR5K_RF2425;
ah->ah_phy_spending = AR5K_PHY_SPENDING_RF2425;
} else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_5112) {
ah->ah_radio = AR5K_RF5111;
ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5111;
} else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_SC0) {
ah->ah_radio = AR5K_RF5112;
ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5112;
} else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_SC1) {
ah->ah_radio = AR5K_RF2413;
ah->ah_phy_spending = AR5K_PHY_SPENDING_RF2413;
} else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_SC2) {
ah->ah_radio = AR5K_RF5413;
ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5413;
} else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_5133) {
/* AR5424 */
if (srev >= AR5K_SREV_VER_AR5424) {
ah->ah_radio = AR5K_RF5413;
ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5413;
/* AR2424 */
} else {
ah->ah_radio = AR5K_RF2413; /* For testing */
ah->ah_phy_spending = AR5K_PHY_SPENDING_RF2413;
}
}
ah->ah_phy = AR5K_PHY(0);
/*
* Write PCI-E power save settings
*/
if ((ah->ah_version == AR5K_AR5212) && (pdev->is_pcie)) {
ath5k_hw_reg_write(ah, 0x9248fc00, 0x4080);
ath5k_hw_reg_write(ah, 0x24924924, 0x4080);
ath5k_hw_reg_write(ah, 0x28000039, 0x4080);
ath5k_hw_reg_write(ah, 0x53160824, 0x4080);
ath5k_hw_reg_write(ah, 0xe5980579, 0x4080);
ath5k_hw_reg_write(ah, 0x001defff, 0x4080);
ath5k_hw_reg_write(ah, 0x1aaabe40, 0x4080);
ath5k_hw_reg_write(ah, 0xbe105554, 0x4080);
ath5k_hw_reg_write(ah, 0x000e3007, 0x4080);
ath5k_hw_reg_write(ah, 0x00000000, 0x4084);
}
/*
* POST
*/
ret = ath5k_hw_post(ah);
if (ret)
goto err_free;
/* Write AR5K_PCICFG_UNK on 2112B and later chips */
if (ah->ah_radio_5ghz_revision > AR5K_SREV_RAD_2112B ||
srev > AR5K_SREV_VER_AR2413) {
ath5k_hw_reg_write(ah, AR5K_PCICFG_UNK, AR5K_PCICFG);
}
/*
* Get card capabilities, values, ...
*/
ret = ath5k_eeprom_init(ah);
if (ret) {
ATH5K_ERR(sc, "unable to init EEPROM\n");
goto err_free;
}
/* Get misc capabilities */
ret = ath5k_hw_set_capabilities(ah);
if (ret) {
ATH5K_ERR(sc, "unable to get device capabilities: 0x%04x\n",
sc->pdev->device);
goto err_free;
}
/* Get MAC address */
ret = ath5k_eeprom_read_mac(ah, mac);
if (ret) {
ATH5K_ERR(sc, "unable to read address from EEPROM: 0x%04x\n",
sc->pdev->device);
goto err_free;
}
ath5k_hw_set_lladdr(ah, mac);
/* Set BSSID to bcast address: ff:ff:ff:ff:ff:ff for now */
memset(ah->ah_bssid, 0xff, ETH_ALEN);
ath5k_hw_set_associd(ah, ah->ah_bssid, 0);
ath5k_hw_set_opmode(ah);
ath5k_hw_set_rfgain_opt(ah);
return ah;
err_free:
kfree(ah);
err:
return ERR_PTR(ret);
}
/**
* ath5k_hw_detach - Free the ath5k_hw struct
*
* @ah: The &struct ath5k_hw
*/
void ath5k_hw_detach(struct ath5k_hw *ah)
{
ATH5K_TRACE(ah->ah_sc);
__set_bit(ATH_STAT_INVALID, ah->ah_sc->status);
if (ah->ah_rf_banks != NULL)
kfree(ah->ah_rf_banks);
/* assume interrupts are down */
kfree(ah);
}
|
