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;
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 revision 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,
164 if (ah->ah_version == AR5K_AR5210)
165 ah->ah_radio_2ghz_revision = 0;
167 ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
170 /* Return on unsuported chips (unsupported eeprom etc) */
171 if ((srev >= AR5K_SREV_VER_AR5416) &&
172 (srev < AR5K_SREV_VER_AR2425)) {
173 ATH5K_ERR(sc, "Device not yet supported.\n");
176 } else if (srev == AR5K_SREV_VER_AR2425) {
177 ATH5K_WARN(sc, "Support for RF2425 is under development.\n");
180 /* Identify single chip solutions */
181 if (((srev <= AR5K_SREV_VER_AR5414) &&
182 (srev >= AR5K_SREV_VER_AR2413)) ||
183 (srev == AR5K_SREV_VER_AR2425)) {
184 ah->ah_single_chip = true;
186 ah->ah_single_chip = false;
189 /* Single chip radio */
190 if (ah->ah_radio_2ghz_revision == ah->ah_radio_5ghz_revision)
191 ah->ah_radio_2ghz_revision = 0;
193 /* Identify the radio chip*/
194 if (ah->ah_version == AR5K_AR5210) {
195 ah->ah_radio = AR5K_RF5110;
197 * Register returns 0x0/0x04 for radio revision
198 * so ath5k_hw_radio_revision doesn't parse the value
199 * correctly. For now we are based on mac's srev to
200 * identify RF2425 radio.
202 } else if (srev == AR5K_SREV_VER_AR2425) {
203 ah->ah_radio = AR5K_RF2425;
204 ah->ah_phy_spending = AR5K_PHY_SPENDING_RF2425;
205 } else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_5112) {
206 ah->ah_radio = AR5K_RF5111;
207 ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5111;
208 } else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_SC0) {
209 ah->ah_radio = AR5K_RF5112;
210 ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5112;
211 } else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_SC1) {
212 ah->ah_radio = AR5K_RF2413;
213 ah->ah_phy_spending = AR5K_PHY_SPENDING_RF2413;
214 } else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_SC2) {
215 ah->ah_radio = AR5K_RF5413;
216 ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5413;
217 } else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_5133) {
219 if (srev >= AR5K_SREV_VER_AR5424) {
220 ah->ah_radio = AR5K_RF5413;
221 ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5413;
224 ah->ah_radio = AR5K_RF2413; /* For testing */
225 ah->ah_phy_spending = AR5K_PHY_SPENDING_RF2413;
228 ah->ah_phy = AR5K_PHY(0);
231 * Write PCI-E power save settings
233 if ((ah->ah_version == AR5K_AR5212) && (pdev->is_pcie)) {
234 ath5k_hw_reg_write(ah, 0x9248fc00, 0x4080);
235 ath5k_hw_reg_write(ah, 0x24924924, 0x4080);
236 ath5k_hw_reg_write(ah, 0x28000039, 0x4080);
237 ath5k_hw_reg_write(ah, 0x53160824, 0x4080);
238 ath5k_hw_reg_write(ah, 0xe5980579, 0x4080);
239 ath5k_hw_reg_write(ah, 0x001defff, 0x4080);
240 ath5k_hw_reg_write(ah, 0x1aaabe40, 0x4080);
241 ath5k_hw_reg_write(ah, 0xbe105554, 0x4080);
242 ath5k_hw_reg_write(ah, 0x000e3007, 0x4080);
243 ath5k_hw_reg_write(ah, 0x00000000, 0x4084);
249 ret = ath5k_hw_post(ah);
253 /* Write AR5K_PCICFG_UNK on 2112B and later chips */
254 if (ah->ah_radio_5ghz_revision > AR5K_SREV_RAD_2112B ||
255 srev > AR5K_SREV_VER_AR2413) {
256 ath5k_hw_reg_write(ah, AR5K_PCICFG_UNK, AR5K_PCICFG);
260 * Get card capabilities, values, ...
262 ret = ath5k_eeprom_init(ah);
264 ATH5K_ERR(sc, "unable to init EEPROM\n");
268 /* Get misc capabilities */
269 ret = ath5k_hw_set_capabilities(ah);
271 ATH5K_ERR(sc, "unable to get device capabilities: 0x%04x\n",
276 /* Get MAC address */
277 ret = ath5k_eeprom_read_mac(ah, mac);
279 ATH5K_ERR(sc, "unable to read address from EEPROM: 0x%04x\n",
284 ath5k_hw_set_lladdr(ah, mac);
285 /* Set BSSID to bcast address: ff:ff:ff:ff:ff:ff for now */
286 memset(ah->ah_bssid, 0xff, ETH_ALEN);
287 ath5k_hw_set_associd(ah, ah->ah_bssid, 0);
288 ath5k_hw_set_opmode(ah);
290 ath5k_hw_set_rfgain_opt(ah);
300 * ath5k_hw_detach - Free the ath5k_hw struct
302 * @ah: The &struct ath5k_hw
304 void ath5k_hw_detach(struct ath5k_hw *ah)
306 ATH5K_TRACE(ah->ah_sc);
308 __set_bit(ATH_STAT_INVALID, ah->ah_sc->status);
310 if (ah->ah_rf_banks != NULL)
311 kfree(ah->ah_rf_banks);
313 /* assume interrupts are down */