]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/net/wireless/ath/ath5k/attach.c
Merge branch 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
[net-next-2.6.git] / drivers / net / wireless / ath / ath5k / attach.c
CommitLineData
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1/*
2 * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
3 * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 *
17 */
18
19/*************************************\
20* Attach/Detach Functions and helpers *
21\*************************************/
22
23#include <linux/pci.h>
5a0e3ad6 24#include <linux/slab.h>
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25#include "ath5k.h"
26#include "reg.h"
27#include "debug.h"
28#include "base.h"
29
30/**
31 * ath5k_hw_post - Power On Self Test helper function
32 *
33 * @ah: The &struct ath5k_hw
34 */
35static int ath5k_hw_post(struct ath5k_hw *ah)
36{
37
2c91108c 38 static const u32 static_pattern[4] = {
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39 0x55555555, 0xaaaaaaaa,
40 0x66666666, 0x99999999
41 };
2c91108c
JS
42 static const u16 regs[2] = { AR5K_STA_ID0, AR5K_PHY(8) };
43 int i, c;
44 u16 cur_reg;
45 u32 var_pattern;
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46 u32 init_val;
47 u32 cur_val;
48
49 for (c = 0; c < 2; c++) {
50
51 cur_reg = regs[c];
52
53 /* Save previous value */
54 init_val = ath5k_hw_reg_read(ah, cur_reg);
55
56 for (i = 0; i < 256; i++) {
57 var_pattern = i << 16 | i;
58 ath5k_hw_reg_write(ah, var_pattern, cur_reg);
59 cur_val = ath5k_hw_reg_read(ah, cur_reg);
60
61 if (cur_val != var_pattern) {
62 ATH5K_ERR(ah->ah_sc, "POST Failed !!!\n");
63 return -EAGAIN;
64 }
65
66 /* Found on ndiswrapper dumps */
67 var_pattern = 0x0039080f;
68 ath5k_hw_reg_write(ah, var_pattern, cur_reg);
69 }
70
71 for (i = 0; i < 4; i++) {
72 var_pattern = static_pattern[i];
73 ath5k_hw_reg_write(ah, var_pattern, cur_reg);
74 cur_val = ath5k_hw_reg_read(ah, cur_reg);
75
76 if (cur_val != var_pattern) {
77 ATH5K_ERR(ah->ah_sc, "POST Failed !!!\n");
78 return -EAGAIN;
79 }
80
81 /* Found on ndiswrapper dumps */
82 var_pattern = 0x003b080f;
83 ath5k_hw_reg_write(ah, var_pattern, cur_reg);
84 }
85
86 /* Restore previous value */
87 ath5k_hw_reg_write(ah, init_val, cur_reg);
88
89 }
90
91 return 0;
92
93}
94
95/**
96 * ath5k_hw_attach - Check if hw is supported and init the needed structs
97 *
98 * @sc: The &struct ath5k_softc we got from the driver's attach function
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99 *
100 * Check if the device is supported, perform a POST and initialize the needed
101 * structs. Returns -ENOMEM if we don't have memory for the needed structs,
102 * -ENODEV if the device is not supported or prints an error msg if something
103 * else went wrong.
104 */
9adca126 105int ath5k_hw_attach(struct ath5k_softc *sc)
c6e387a2 106{
9adca126 107 struct ath5k_hw *ah = sc->ah;
13b81559 108 struct ath_common *common = ath5k_hw_common(ah);
c6e387a2 109 struct pci_dev *pdev = sc->pdev;
1c818740 110 struct ath5k_eeprom_info *ee;
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111 int ret;
112 u32 srev;
113
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114 /*
115 * HW information
116 */
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117 ah->ah_radar.r_enabled = AR5K_TUNE_RADAR_ALERT;
118 ah->ah_turbo = false;
119 ah->ah_txpower.txp_tpc = AR5K_TUNE_TPC_TXPOWER;
120 ah->ah_imr = 0;
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121 ah->ah_limit_tx_retries = AR5K_INIT_TX_RETRY;
122 ah->ah_software_retry = false;
caec9112 123 ah->ah_ant_mode = AR5K_ANTMODE_DEFAULT;
9d332c82 124 ah->ah_noise_floor = -95; /* until first NF calibration is run */
2111ac0d 125 sc->ani_state.ani_mode = ATH5K_ANI_MODE_AUTO;
b6855772 126 ah->ah_current_channel = &sc->channels[0];
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127
128 /*
97a81f5c 129 * Find the mac version
c6e387a2 130 */
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131 srev = ath5k_hw_reg_read(ah, AR5K_SREV);
132 if (srev < AR5K_SREV_AR5311)
133 ah->ah_version = AR5K_AR5210;
134 else if (srev < AR5K_SREV_AR5212)
135 ah->ah_version = AR5K_AR5211;
136 else
137 ah->ah_version = AR5K_AR5212;
c6e387a2 138
a180a130 139 /* Fill the ath5k_hw struct with the needed functions */
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140 ret = ath5k_hw_init_desc_functions(ah);
141 if (ret)
3d435ad7 142 goto err;
c6e387a2 143
a180a130 144 /* Bring device out of sleep and reset its units */
edd7fc70 145 ret = ath5k_hw_nic_wakeup(ah, 0, true);
c6e387a2 146 if (ret)
3d435ad7 147 goto err;
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148
149 /* Get MAC, PHY and RADIO revisions */
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150 ah->ah_mac_srev = srev;
151 ah->ah_mac_version = AR5K_REG_MS(srev, AR5K_SREV_VER);
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152 ah->ah_phy_revision = ath5k_hw_reg_read(ah, AR5K_PHY_CHIP_ID) &
153 0xffffffff;
154 ah->ah_radio_5ghz_revision = ath5k_hw_radio_revision(ah,
155 CHANNEL_5GHZ);
ee81c554 156 ah->ah_phy = AR5K_PHY(0);
c6e387a2 157
a180a130 158 /* Try to identify radio chip based on its srev */
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159 switch (ah->ah_radio_5ghz_revision & 0xf0) {
160 case AR5K_SREV_RAD_5111:
c6e387a2 161 ah->ah_radio = AR5K_RF5111;
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162 ah->ah_single_chip = false;
163 ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
164 CHANNEL_2GHZ);
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165 break;
166 case AR5K_SREV_RAD_5112:
167 case AR5K_SREV_RAD_2112:
c6e387a2 168 ah->ah_radio = AR5K_RF5112;
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169 ah->ah_single_chip = false;
170 ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
171 CHANNEL_2GHZ);
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172 break;
173 case AR5K_SREV_RAD_2413:
c6e387a2 174 ah->ah_radio = AR5K_RF2413;
ee81c554 175 ah->ah_single_chip = true;
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176 break;
177 case AR5K_SREV_RAD_5413:
c6e387a2 178 ah->ah_radio = AR5K_RF5413;
ee81c554 179 ah->ah_single_chip = true;
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180 break;
181 case AR5K_SREV_RAD_2316:
182 ah->ah_radio = AR5K_RF2316;
183 ah->ah_single_chip = true;
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184 break;
185 case AR5K_SREV_RAD_2317:
186 ah->ah_radio = AR5K_RF2317;
187 ah->ah_single_chip = true;
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188 break;
189 case AR5K_SREV_RAD_5424:
190 if (ah->ah_mac_version == AR5K_SREV_AR2425 ||
191 ah->ah_mac_version == AR5K_SREV_AR2417){
192 ah->ah_radio = AR5K_RF2425;
193 ah->ah_single_chip = true;
ee81c554 194 } else {
c6e387a2 195 ah->ah_radio = AR5K_RF5413;
ee81c554 196 ah->ah_single_chip = true;
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197 }
198 break;
199 default:
200 /* Identify radio based on mac/phy srev */
201 if (ah->ah_version == AR5K_AR5210) {
202 ah->ah_radio = AR5K_RF5110;
203 ah->ah_single_chip = false;
204 } else if (ah->ah_version == AR5K_AR5211) {
205 ah->ah_radio = AR5K_RF5111;
206 ah->ah_single_chip = false;
207 ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
208 CHANNEL_2GHZ);
209 } else if (ah->ah_mac_version == (AR5K_SREV_AR2425 >> 4) ||
210 ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4) ||
211 ah->ah_phy_revision == AR5K_SREV_PHY_2425) {
212 ah->ah_radio = AR5K_RF2425;
213 ah->ah_single_chip = true;
214 ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2425;
ee81c554 215 } else if (srev == AR5K_SREV_AR5213A &&
e8f055f0 216 ah->ah_phy_revision == AR5K_SREV_PHY_5212B) {
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217 ah->ah_radio = AR5K_RF5112;
218 ah->ah_single_chip = false;
e8f055f0 219 ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5112B;
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220 } else if (ah->ah_mac_version == (AR5K_SREV_AR2415 >> 4)) {
221 ah->ah_radio = AR5K_RF2316;
222 ah->ah_single_chip = true;
223 ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2316;
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224 } else if (ah->ah_mac_version == (AR5K_SREV_AR5414 >> 4) ||
225 ah->ah_phy_revision == AR5K_SREV_PHY_5413) {
226 ah->ah_radio = AR5K_RF5413;
227 ah->ah_single_chip = true;
228 ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5413;
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229 } else if (ah->ah_mac_version == (AR5K_SREV_AR2414 >> 4) ||
230 ah->ah_phy_revision == AR5K_SREV_PHY_2413) {
231 ah->ah_radio = AR5K_RF2413;
232 ah->ah_single_chip = true;
233 ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2413;
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234 } else {
235 ATH5K_ERR(sc, "Couldn't identify radio revision.\n");
236 ret = -ENODEV;
3d435ad7 237 goto err;
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238 }
239 }
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240
241
242 /* Return on unsuported chips (unsupported eeprom etc) */
243 if ((srev >= AR5K_SREV_AR5416) &&
244 (srev < AR5K_SREV_AR2425)) {
245 ATH5K_ERR(sc, "Device not yet supported.\n");
246 ret = -ENODEV;
3d435ad7 247 goto err;
ee81c554 248 }
c6e387a2 249
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250 /*
251 * POST
252 */
253 ret = ath5k_hw_post(ah);
254 if (ret)
3d435ad7 255 goto err;
c6e387a2 256
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257 /* Enable pci core retry fix on Hainan (5213A) and later chips */
258 if (srev >= AR5K_SREV_AR5213A)
b55a5de1 259 AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, AR5K_PCICFG_RETRY_FIX);
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260
261 /*
ee81c554
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262 * Get card capabilities, calibration values etc
263 * TODO: EEPROM work
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264 */
265 ret = ath5k_eeprom_init(ah);
266 if (ret) {
267 ATH5K_ERR(sc, "unable to init EEPROM\n");
3d435ad7 268 goto err;
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269 }
270
394317fc
LR
271 ee = &ah->ah_capabilities.cap_eeprom;
272
c38e7a93
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273 /*
274 * Write PCI-E power save settings
275 */
276 if ((ah->ah_version == AR5K_AR5212) && (pdev->is_pcie)) {
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277 ath5k_hw_reg_write(ah, 0x9248fc00, AR5K_PCIE_SERDES);
278 ath5k_hw_reg_write(ah, 0x24924924, AR5K_PCIE_SERDES);
279
280 /* Shut off RX when elecidle is asserted */
281 ath5k_hw_reg_write(ah, 0x28000039, AR5K_PCIE_SERDES);
282 ath5k_hw_reg_write(ah, 0x53160824, AR5K_PCIE_SERDES);
283
284 /* If serdes programing is enabled, increase PCI-E
285 * tx power for systems with long trace from host
286 * to minicard connector. */
287 if (ee->ee_serdes)
288 ath5k_hw_reg_write(ah, 0xe5980579, AR5K_PCIE_SERDES);
289 else
290 ath5k_hw_reg_write(ah, 0xf6800579, AR5K_PCIE_SERDES);
291
292 /* Shut off PLL and CLKREQ active in L1 */
293 ath5k_hw_reg_write(ah, 0x001defff, AR5K_PCIE_SERDES);
294
295 /* Preserve other settings */
296 ath5k_hw_reg_write(ah, 0x1aaabe40, AR5K_PCIE_SERDES);
297 ath5k_hw_reg_write(ah, 0xbe105554, AR5K_PCIE_SERDES);
298 ath5k_hw_reg_write(ah, 0x000e3007, AR5K_PCIE_SERDES);
299
300 /* Reset SERDES to load new settings */
301 ath5k_hw_reg_write(ah, 0x00000000, AR5K_PCIE_SERDES_RESET);
302 mdelay(1);
303 }
304
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305 /* Get misc capabilities */
306 ret = ath5k_hw_set_capabilities(ah);
307 if (ret) {
308 ATH5K_ERR(sc, "unable to get device capabilities: 0x%04x\n",
309 sc->pdev->device);
3d435ad7 310 goto err;
c6e387a2
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311 }
312
1c818740 313 /* Crypto settings */
e0f8c2a9
BR
314 common->keymax = (sc->ah->ah_version == AR5K_AR5210 ?
315 AR5K_KEYTABLE_SIZE_5210 : AR5K_KEYTABLE_SIZE_5211);
316
781f3136
BR
317 if (srev >= AR5K_SREV_AR5212_V4 &&
318 (ee->ee_version >= AR5K_EEPROM_VERSION_5_0 &&
319 !AR5K_EEPROM_AES_DIS(ee->ee_misc5)))
ce2220d1 320 common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
1c818740 321
f650470a 322 if (srev >= AR5K_SREV_AR2414) {
781f3136 323 common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
f650470a
BC
324 AR5K_REG_ENABLE_BITS(ah, AR5K_MISC_MODE,
325 AR5K_MISC_MODE_COMBINED_MIC);
326 }
327
0e149cf5 328 /* MAC address is cleared until add_interface */
2c91108c 329 ath5k_hw_set_lladdr(ah, (u8[ETH_ALEN]){});
0e149cf5 330
c6e387a2 331 /* Set BSSID to bcast address: ff:ff:ff:ff:ff:ff for now */
954fecea 332 memcpy(common->curbssid, ath_bcast_mac, ETH_ALEN);
418de6d9 333 ath5k_hw_set_bssid(ah);
ccfe5552 334 ath5k_hw_set_opmode(ah, sc->opmode);
c6e387a2 335
6f3b414a 336 ath5k_hw_rfgain_opt_init(ah);
c6e387a2 337
e5e2647f
BC
338 ath5k_hw_init_nfcal_hist(ah);
339
f0f3d388
BC
340 /* turn on HW LEDs */
341 ath5k_hw_set_ledstate(ah, AR5K_LED_INIT);
342
9adca126 343 return 0;
3d435ad7 344err:
9adca126 345 return ret;
c6e387a2
NK
346}
347
348/**
349 * ath5k_hw_detach - Free the ath5k_hw struct
350 *
351 * @ah: The &struct ath5k_hw
352 */
353void ath5k_hw_detach(struct ath5k_hw *ah)
354{
c6e387a2
NK
355 __set_bit(ATH_STAT_INVALID, ah->ah_sc->status);
356
357 if (ah->ah_rf_banks != NULL)
358 kfree(ah->ah_rf_banks);
359
8f655dde
NK
360 ath5k_eeprom_detach(ah);
361
c6e387a2 362 /* assume interrupts are down */
c6e387a2 363}