2 * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
3 * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
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.
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.
19 /*************************************\
20 * Attach/Detach Functions and helpers *
21 \*************************************/
23 #include <linux/pci.h>
30 * ath5k_hw_post - Power On Self Test helper function
32 * @ah: The &struct ath5k_hw
34 static int ath5k_hw_post(struct ath5k_hw *ah)
39 u16 regs[2] = {AR5K_STA_ID0, AR5K_PHY(8)};
41 u32 static_pattern[4] = {
42 0x55555555, 0xaaaaaaaa,
43 0x66666666, 0x99999999
48 for (c = 0; c < 2; c++) {
52 /* Save previous value */
53 init_val = ath5k_hw_reg_read(ah, cur_reg);
55 for (i = 0; i < 256; i++) {
56 var_pattern = i << 16 | i;
57 ath5k_hw_reg_write(ah, var_pattern, cur_reg);
58 cur_val = ath5k_hw_reg_read(ah, cur_reg);
60 if (cur_val != var_pattern) {
61 ATH5K_ERR(ah->ah_sc, "POST Failed !!!\n");
65 /* Found on ndiswrapper dumps */
66 var_pattern = 0x0039080f;
67 ath5k_hw_reg_write(ah, var_pattern, cur_reg);
70 for (i = 0; i < 4; i++) {
71 var_pattern = static_pattern[i];
72 ath5k_hw_reg_write(ah, var_pattern, cur_reg);
73 cur_val = ath5k_hw_reg_read(ah, cur_reg);
75 if (cur_val != var_pattern) {
76 ATH5K_ERR(ah->ah_sc, "POST Failed !!!\n");
80 /* Found on ndiswrapper dumps */
81 var_pattern = 0x003b080f;
82 ath5k_hw_reg_write(ah, var_pattern, cur_reg);
85 /* Restore previous value */
86 ath5k_hw_reg_write(ah, init_val, cur_reg);
95 * ath5k_hw_attach - Check if hw is supported and init the needed structs
97 * @sc: The &struct ath5k_softc we got from the driver's attach function
98 * @mac_version: The mac version id (check out ath5k.h) based on pci id
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
105 struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version)
108 struct pci_dev *pdev = sc->pdev;
109 u8 mac[ETH_ALEN] = {};
113 /*If we passed the test malloc a ath5k_hw struct*/
114 ah = kzalloc(sizeof(struct ath5k_hw), GFP_KERNEL);
117 ATH5K_ERR(sc, "out of memory\n");
122 ah->ah_iobase = sc->iobase;
127 ah->ah_op_mode = NL80211_IFTYPE_STATION;
128 ah->ah_radar.r_enabled = AR5K_TUNE_RADAR_ALERT;
129 ah->ah_turbo = false;
130 ah->ah_txpower.txp_tpc = AR5K_TUNE_TPC_TXPOWER;
132 ah->ah_atim_window = 0;
133 ah->ah_aifs = AR5K_TUNE_AIFS;
134 ah->ah_cw_min = AR5K_TUNE_CWMIN;
135 ah->ah_limit_tx_retries = AR5K_INIT_TX_RETRY;
136 ah->ah_software_retry = false;
137 ah->ah_ant_diversity = AR5K_TUNE_ANT_DIVERSITY;
140 * Set the mac version based on the pci id
142 ah->ah_version = mac_version;
144 /*Fill the ath5k_hw struct with the needed functions*/
145 ret = ath5k_hw_init_desc_functions(ah);
149 /* Bring device out of sleep and reset it's units */
150 ret = ath5k_hw_nic_wakeup(ah, CHANNEL_B, true);
154 /* Get MAC, PHY and RADIO revisions */
155 srev = ath5k_hw_reg_read(ah, AR5K_SREV);
156 ah->ah_mac_srev = srev;
157 ah->ah_mac_version = AR5K_REG_MS(srev, AR5K_SREV_VER);
158 ah->ah_mac_revision = AR5K_REG_MS(srev, AR5K_SREV_REV);
159 ah->ah_phy_revision = ath5k_hw_reg_read(ah, AR5K_PHY_CHIP_ID) &
161 ah->ah_radio_5ghz_revision = ath5k_hw_radio_revision(ah,
163 ah->ah_phy = AR5K_PHY(0);
165 /* Try to identify radio chip based on it's srev */
166 switch (ah->ah_radio_5ghz_revision & 0xf0) {
167 case AR5K_SREV_RAD_5111:
168 ah->ah_radio = AR5K_RF5111;
169 ah->ah_single_chip = false;
170 ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
173 case AR5K_SREV_RAD_5112:
174 case AR5K_SREV_RAD_2112:
175 ah->ah_radio = AR5K_RF5112;
176 ah->ah_single_chip = false;
177 ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
180 case AR5K_SREV_RAD_2413:
181 ah->ah_radio = AR5K_RF2413;
182 ah->ah_single_chip = true;
184 case AR5K_SREV_RAD_5413:
185 ah->ah_radio = AR5K_RF5413;
186 ah->ah_single_chip = true;
188 case AR5K_SREV_RAD_2316:
189 ah->ah_radio = AR5K_RF2316;
190 ah->ah_single_chip = true;
192 case AR5K_SREV_RAD_2317:
193 ah->ah_radio = AR5K_RF2317;
194 ah->ah_single_chip = true;
196 case AR5K_SREV_RAD_5424:
197 if (ah->ah_mac_version == AR5K_SREV_AR2425 ||
198 ah->ah_mac_version == AR5K_SREV_AR2417){
199 ah->ah_radio = AR5K_RF2425;
200 ah->ah_single_chip = true;
202 ah->ah_radio = AR5K_RF5413;
203 ah->ah_single_chip = true;
207 /* Identify radio based on mac/phy srev */
208 if (ah->ah_version == AR5K_AR5210) {
209 ah->ah_radio = AR5K_RF5110;
210 ah->ah_single_chip = false;
211 } else if (ah->ah_version == AR5K_AR5211) {
212 ah->ah_radio = AR5K_RF5111;
213 ah->ah_single_chip = false;
214 ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
216 } else if (ah->ah_mac_version == (AR5K_SREV_AR2425 >> 4) ||
217 ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4) ||
218 ah->ah_phy_revision == AR5K_SREV_PHY_2425) {
219 ah->ah_radio = AR5K_RF2425;
220 ah->ah_single_chip = true;
221 ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2425;
222 } else if (srev == AR5K_SREV_AR5213A &&
223 ah->ah_phy_revision == AR5K_SREV_PHY_5212B) {
224 ah->ah_radio = AR5K_RF5112;
225 ah->ah_single_chip = false;
226 ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5112B;
227 } else if (ah->ah_mac_version == (AR5K_SREV_AR2415 >> 4)) {
228 ah->ah_radio = AR5K_RF2316;
229 ah->ah_single_chip = true;
230 ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2316;
231 } else if (ah->ah_mac_version == (AR5K_SREV_AR5414 >> 4) ||
232 ah->ah_phy_revision == AR5K_SREV_PHY_5413) {
233 ah->ah_radio = AR5K_RF5413;
234 ah->ah_single_chip = true;
235 ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5413;
236 } else if (ah->ah_mac_version == (AR5K_SREV_AR2414 >> 4) ||
237 ah->ah_phy_revision == AR5K_SREV_PHY_2413) {
238 ah->ah_radio = AR5K_RF2413;
239 ah->ah_single_chip = true;
240 ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2413;
242 ATH5K_ERR(sc, "Couldn't identify radio revision.\n");
249 /* Return on unsuported chips (unsupported eeprom etc) */
250 if ((srev >= AR5K_SREV_AR5416) &&
251 (srev < AR5K_SREV_AR2425)) {
252 ATH5K_ERR(sc, "Device not yet supported.\n");
258 * Write PCI-E power save settings
260 if ((ah->ah_version == AR5K_AR5212) && (pdev->is_pcie)) {
261 ath5k_hw_reg_write(ah, 0x9248fc00, AR5K_PCIE_SERDES);
262 ath5k_hw_reg_write(ah, 0x24924924, AR5K_PCIE_SERDES);
263 /* Shut off RX when elecidle is asserted */
264 ath5k_hw_reg_write(ah, 0x28000039, AR5K_PCIE_SERDES);
265 ath5k_hw_reg_write(ah, 0x53160824, AR5K_PCIE_SERDES);
266 /* TODO: EEPROM work */
267 ath5k_hw_reg_write(ah, 0xe5980579, AR5K_PCIE_SERDES);
268 /* Shut off PLL and CLKREQ active in L1 */
269 ath5k_hw_reg_write(ah, 0x001defff, AR5K_PCIE_SERDES);
270 /* Preserce other settings */
271 ath5k_hw_reg_write(ah, 0x1aaabe40, AR5K_PCIE_SERDES);
272 ath5k_hw_reg_write(ah, 0xbe105554, AR5K_PCIE_SERDES);
273 ath5k_hw_reg_write(ah, 0x000e3007, AR5K_PCIE_SERDES);
274 /* Reset SERDES to load new settings */
275 ath5k_hw_reg_write(ah, 0x00000000, AR5K_PCIE_SERDES_RESET);
282 ret = ath5k_hw_post(ah);
286 /* Enable pci core retry fix on Hainan (5213A) and later chips */
287 if (srev >= AR5K_SREV_AR5213A)
288 ath5k_hw_reg_write(ah, AR5K_PCICFG_RETRY_FIX, AR5K_PCICFG);
291 * Get card capabilities, calibration values etc
294 ret = ath5k_eeprom_init(ah);
296 ATH5K_ERR(sc, "unable to init EEPROM\n");
300 /* Get misc capabilities */
301 ret = ath5k_hw_set_capabilities(ah);
303 ATH5K_ERR(sc, "unable to get device capabilities: 0x%04x\n",
308 if (srev >= AR5K_SREV_AR2414) {
309 ah->ah_combined_mic = true;
310 AR5K_REG_ENABLE_BITS(ah, AR5K_MISC_MODE,
311 AR5K_MISC_MODE_COMBINED_MIC);
314 /* MAC address is cleared until add_interface */
315 ath5k_hw_set_lladdr(ah, mac);
317 /* Set BSSID to bcast address: ff:ff:ff:ff:ff:ff for now */
318 memset(ah->ah_bssid, 0xff, ETH_ALEN);
319 ath5k_hw_set_associd(ah, ah->ah_bssid, 0);
320 ath5k_hw_set_opmode(ah);
322 ath5k_hw_rfgain_opt_init(ah);
332 * ath5k_hw_detach - Free the ath5k_hw struct
334 * @ah: The &struct ath5k_hw
336 void ath5k_hw_detach(struct ath5k_hw *ah)
338 ATH5K_TRACE(ah->ah_sc);
340 __set_bit(ATH_STAT_INVALID, ah->ah_sc->status);
342 if (ah->ah_rf_banks != NULL)
343 kfree(ah->ah_rf_banks);
345 /* assume interrupts are down */