diff options
Diffstat (limited to 'drivers/net/wireless/ath5k/hw.c')
| -rw-r--r-- | drivers/net/wireless/ath5k/hw.c | 243 |
1 files changed, 153 insertions, 90 deletions
diff --git a/drivers/net/wireless/ath5k/hw.c b/drivers/net/wireless/ath5k/hw.c index c6d12c53bda4..ad1a5b422c8c 100644 --- a/drivers/net/wireless/ath5k/hw.c +++ b/drivers/net/wireless/ath5k/hw.c @@ -139,6 +139,8 @@ static int ath5k_hw_post(struct ath5k_hw *ah) 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++) { @@ -170,6 +172,10 @@ static int ath5k_hw_post(struct ath5k_hw *ah) 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; @@ -287,67 +293,42 @@ struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version) /* 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; - - if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_5112A) { - ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5112; - } else { - ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5112A; - } - + 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_RF5112A; + 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_RF5112A; + 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_RF5424; + ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5413; /* AR2424 */ } else { ah->ah_radio = AR5K_RF2413; /* For testing */ - ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5112A; + ah->ah_phy_spending = AR5K_PHY_SPENDING_RF2413; } - - /* - * Register returns 0x4 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_RF5112; } - ah->ah_phy = AR5K_PHY(0); /* - * Identify AR5212-based PCI-E cards - * And write some initial settings. - * - * (doing a "strings" on ndis driver - * -ar5211.sys- reveals the following - * pci-e related functions: - * - * pcieClockReq - * pcieRxErrNotify - * pcieL1SKPEnable - * pcieAspm - * pcieDisableAspmOnRfWake - * pciePowerSaveEnable - * - * I guess these point to ClockReq but - * i'm not sure.) + * Write PCI-E power save settings */ if ((ah->ah_version == AR5K_AR5212) && (pdev->is_pcie)) { ath5k_hw_reg_write(ah, 0x9248fc00, 0x4080); @@ -369,10 +350,15 @@ struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version) 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"); @@ -843,27 +829,41 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode, * Write some more initial register settings */ if (ah->ah_version == AR5K_AR5212) { - ath5k_hw_reg_write(ah, 0x0002a002, AR5K_PHY(11)); + ath5k_hw_reg_write(ah, 0x0002a002, 0x982c); if (channel->hw_value == CHANNEL_G) if (ah->ah_mac_srev < AR5K_SREV_VER_AR2413) ath5k_hw_reg_write(ah, 0x00f80d80, - AR5K_PHY(83)); + 0x994c); else if (ah->ah_mac_srev < AR5K_SREV_VER_AR2424) ath5k_hw_reg_write(ah, 0x00380140, - AR5K_PHY(83)); + 0x994c); else if (ah->ah_mac_srev < AR5K_SREV_VER_AR2425) ath5k_hw_reg_write(ah, 0x00fc0ec0, - AR5K_PHY(83)); + 0x994c); else /* 2425 */ ath5k_hw_reg_write(ah, 0x00fc0fc0, - AR5K_PHY(83)); + 0x994c); else - ath5k_hw_reg_write(ah, 0x00000000, - AR5K_PHY(83)); - - ath5k_hw_reg_write(ah, 0x000009b5, 0xa228); - ath5k_hw_reg_write(ah, 0x0000000f, 0x8060); + ath5k_hw_reg_write(ah, 0x00000000, 0x994c); + + /* Some bits are disabled here, we know nothing about + * register 0xa228 yet, most of the times this ends up + * with a value 0x9b5 -haven't seen any dump with + * a different value- */ + /* Got this from decompiling binary HAL */ + data = ath5k_hw_reg_read(ah, 0xa228); + data &= 0xfffffdff; + ath5k_hw_reg_write(ah, data, 0xa228); + + data = ath5k_hw_reg_read(ah, 0xa228); + data &= 0xfffe03ff; + ath5k_hw_reg_write(ah, data, 0xa228); + data = 0; + + /* Just write 0x9b5 ? */ + /* ath5k_hw_reg_write(ah, 0x000009b5, 0xa228); */ + ath5k_hw_reg_write(ah, 0x0000000f, AR5K_SEQ_MASK); ath5k_hw_reg_write(ah, 0x00000000, 0xa254); ath5k_hw_reg_write(ah, 0x0000000e, AR5K_PHY_SCAL); } @@ -879,6 +879,7 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode, else data = 0xffb80d20; ath5k_hw_reg_write(ah, data, AR5K_PHY_FRAME_CTL); + data = 0; } /* @@ -898,7 +899,6 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode, /* * Write RF registers - * TODO:Does this work on 5211 (5111) ? */ ret = ath5k_hw_rfregs(ah, channel, mode); if (ret) @@ -935,7 +935,7 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode, return ret; /* Set antenna mode */ - AR5K_REG_MASKED_BITS(ah, AR5K_PHY(0x44), + AR5K_REG_MASKED_BITS(ah, AR5K_PHY_ANT_CTL, ah->ah_antenna[ee_mode][0], 0xfffffc06); /* @@ -965,15 +965,15 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode, ath5k_hw_reg_write(ah, AR5K_PHY_NF_SVAL(ee->ee_noise_floor_thr[ee_mode]), - AR5K_PHY(0x5a)); + AR5K_PHY_NFTHRES); - AR5K_REG_MASKED_BITS(ah, AR5K_PHY(0x11), + AR5K_REG_MASKED_BITS(ah, AR5K_PHY_SETTLING, (ee->ee_switch_settling[ee_mode] << 7) & 0x3f80, 0xffffc07f); - AR5K_REG_MASKED_BITS(ah, AR5K_PHY(0x12), + AR5K_REG_MASKED_BITS(ah, AR5K_PHY_GAIN, (ee->ee_ant_tx_rx[ee_mode] << 12) & 0x3f000, 0xfffc0fff); - AR5K_REG_MASKED_BITS(ah, AR5K_PHY(0x14), + AR5K_REG_MASKED_BITS(ah, AR5K_PHY_DESIRED_SIZE, (ee->ee_adc_desired_size[ee_mode] & 0x00ff) | ((ee->ee_pga_desired_size[ee_mode] << 8) & 0xff00), 0xffff0000); @@ -982,13 +982,13 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode, (ee->ee_tx_end2xpa_disable[ee_mode] << 24) | (ee->ee_tx_end2xpa_disable[ee_mode] << 16) | (ee->ee_tx_frm2xpa_enable[ee_mode] << 8) | - (ee->ee_tx_frm2xpa_enable[ee_mode]), AR5K_PHY(0x0d)); + (ee->ee_tx_frm2xpa_enable[ee_mode]), AR5K_PHY_RF_CTL4); - AR5K_REG_MASKED_BITS(ah, AR5K_PHY(0x0a), + AR5K_REG_MASKED_BITS(ah, AR5K_PHY_RF_CTL3, ee->ee_tx_end2xlna_enable[ee_mode] << 8, 0xffff00ff); - AR5K_REG_MASKED_BITS(ah, AR5K_PHY(0x19), + AR5K_REG_MASKED_BITS(ah, AR5K_PHY_NF, (ee->ee_thr_62[ee_mode] << 12) & 0x7f000, 0xfff80fff); - AR5K_REG_MASKED_BITS(ah, AR5K_PHY(0x49), 4, 0xffffff01); + AR5K_REG_MASKED_BITS(ah, AR5K_PHY_OFDM_SELFCORR, 4, 0xffffff01); AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ, AR5K_PHY_IQ_CORR_ENABLE | @@ -1063,7 +1063,8 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode, ath5k_hw_reg_write(ah, AR5K_PHY_ACT_ENABLE, AR5K_PHY_ACT); /* - * 5111/5112 Specific + * On 5211+ read activation -> rx delay + * and use it. */ if (ah->ah_version != AR5K_AR5210) { data = ath5k_hw_reg_read(ah, AR5K_PHY_RX_DELAY) & @@ -1071,40 +1072,77 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode, data = (channel->hw_value & CHANNEL_CCK) ? ((data << 2) / 22) : (data / 10); - udelay(100 + data); + udelay(100 + (2 * data)); + data = 0; } else { mdelay(1); } /* - * Enable calibration and wait until completion + * Perform ADC test (?) + */ + data = ath5k_hw_reg_read(ah, AR5K_PHY_TST1); + ath5k_hw_reg_write(ah, AR5K_PHY_TST1_TXHOLD, AR5K_PHY_TST1); + for (i = 0; i <= 20; i++) { + if (!(ath5k_hw_reg_read(ah, AR5K_PHY_ADC_TEST) & 0x10)) + break; + udelay(200); + } + ath5k_hw_reg_write(ah, data, AR5K_PHY_TST1); + data = 0; + + /* + * Start automatic gain calibration + * + * During AGC calibration RX path is re-routed to + * a signal detector so we don't receive anything. + * + * This method is used to calibrate some static offsets + * used together with on-the fly I/Q calibration (the + * one performed via ath5k_hw_phy_calibrate), that doesn't + * interrupt rx path. + * + * If we are in a noisy environment AGC calibration may time + * out. */ AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_AGCCTL, AR5K_PHY_AGCCTL_CAL); + /* At the same time start I/Q calibration for QAM constellation + * -no need for CCK- */ + ah->ah_calibration = false; + if (!(mode == AR5K_MODE_11B)) { + ah->ah_calibration = true; + AR5K_REG_WRITE_BITS(ah, AR5K_PHY_IQ, + AR5K_PHY_IQ_CAL_NUM_LOG_MAX, 15); + AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ, + AR5K_PHY_IQ_RUN); + } + + /* Wait for gain calibration to finish (we check for I/Q calibration + * during ath5k_phy_calibrate) */ if (ath5k_hw_register_timeout(ah, AR5K_PHY_AGCCTL, AR5K_PHY_AGCCTL_CAL, 0, false)) { - ATH5K_ERR(ah->ah_sc, "calibration timeout (%uMHz)\n", + ATH5K_ERR(ah->ah_sc, "gain calibration timeout (%uMHz)\n", channel->center_freq); return -EAGAIN; } + /* + * Start noise floor calibration + * + * If we run NF calibration before AGC, it always times out. + * Binary HAL starts NF and AGC calibration at the same time + * and only waits for AGC to finish. I believe that's wrong because + * during NF calibration, rx path is also routed to a detector, so if + * it doesn't finish we won't have RX. + * + * XXX: Find an interval that's OK for all cards... + */ ret = ath5k_hw_noise_floor_calibration(ah, channel->center_freq); if (ret) return ret; - ah->ah_calibration = false; - - /* A and G modes can use QAM modulation which requires enabling - * I and Q calibration. Don't bother in B mode. */ - if (!(mode == AR5K_MODE_11B)) { - ah->ah_calibration = true; - AR5K_REG_WRITE_BITS(ah, AR5K_PHY_IQ, - AR5K_PHY_IQ_CAL_NUM_LOG_MAX, 15); - AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ, - AR5K_PHY_IQ_RUN); - } - /* * Reset queues and start beacon timers at the end of the reset routine */ @@ -1154,6 +1192,12 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode, ath5k_hw_reg_write(ah, AR5K_PHY_SCLOCK_32MHZ, AR5K_PHY_SCLOCK); ath5k_hw_reg_write(ah, AR5K_PHY_SDELAY_32MHZ, AR5K_PHY_SDELAY); ath5k_hw_reg_write(ah, ah->ah_phy_spending, AR5K_PHY_SPENDING); + + data = ath5k_hw_reg_read(ah, AR5K_USEC_5211) & 0xffffc07f ; + data |= (ah->ah_phy_spending == AR5K_PHY_SPENDING_18) ? + 0x00000f80 : 0x00001380 ; + ath5k_hw_reg_write(ah, data, AR5K_USEC_5211); + data = 0; } if (ah->ah_version == AR5K_AR5212) { @@ -1226,7 +1270,7 @@ int ath5k_hw_set_power(struct ath5k_hw *ah, enum ath5k_power_mode mode, bool set_chip, u16 sleep_duration) { unsigned int i; - u32 staid; + u32 staid, data; ATH5K_TRACE(ah->ah_sc); staid = ath5k_hw_reg_read(ah, AR5K_STA_ID1); @@ -1238,7 +1282,8 @@ int ath5k_hw_set_power(struct ath5k_hw *ah, enum ath5k_power_mode mode, case AR5K_PM_NETWORK_SLEEP: if (set_chip) ath5k_hw_reg_write(ah, - AR5K_SLEEP_CTL_SLE | sleep_duration, + AR5K_SLEEP_CTL_SLE_ALLOW | + sleep_duration, AR5K_SLEEP_CTL); staid |= AR5K_STA_ID1_PWR_SV; @@ -1253,13 +1298,24 @@ int ath5k_hw_set_power(struct ath5k_hw *ah, enum ath5k_power_mode mode, break; case AR5K_PM_AWAKE: + + staid &= ~AR5K_STA_ID1_PWR_SV; + if (!set_chip) goto commit; - ath5k_hw_reg_write(ah, AR5K_SLEEP_CTL_SLE_WAKE, - AR5K_SLEEP_CTL); + /* Preserve sleep duration */ + data = ath5k_hw_reg_read(ah, AR5K_SLEEP_CTL); + if( data & 0xffc00000 ){ + data = 0; + } else { + data = data & 0xfffcffff; + } - for (i = 5000; i > 0; i--) { + ath5k_hw_reg_write(ah, data, AR5K_SLEEP_CTL); + udelay(15); + + for (i = 50; i > 0; i--) { /* Check if the chip did wake up */ if ((ath5k_hw_reg_read(ah, AR5K_PCICFG) & AR5K_PCICFG_SPWR_DN) == 0) @@ -1267,15 +1323,13 @@ int ath5k_hw_set_power(struct ath5k_hw *ah, enum ath5k_power_mode mode, /* Wait a bit and retry */ udelay(200); - ath5k_hw_reg_write(ah, AR5K_SLEEP_CTL_SLE_WAKE, - AR5K_SLEEP_CTL); + ath5k_hw_reg_write(ah, data, AR5K_SLEEP_CTL); } /* Fail if the chip didn't wake up */ if (i <= 0) return -EIO; - staid &= ~AR5K_STA_ID1_PWR_SV; break; default: @@ -1304,6 +1358,7 @@ void ath5k_hw_start_rx(struct ath5k_hw *ah) { ATH5K_TRACE(ah->ah_sc); ath5k_hw_reg_write(ah, AR5K_CR_RXE, AR5K_CR); + ath5k_hw_reg_read(ah, AR5K_CR); } /* @@ -1390,6 +1445,7 @@ int ath5k_hw_tx_start(struct ath5k_hw *ah, unsigned int queue) } /* Start queue */ ath5k_hw_reg_write(ah, tx_queue, AR5K_CR); + ath5k_hw_reg_read(ah, AR5K_CR); } else { /* Return if queue is disabled */ if (AR5K_REG_READ_Q(ah, AR5K_QCU_TXD, queue)) @@ -1440,6 +1496,7 @@ int ath5k_hw_stop_tx_dma(struct ath5k_hw *ah, unsigned int queue) /* Stop queue */ ath5k_hw_reg_write(ah, tx_queue, AR5K_CR); + ath5k_hw_reg_read(ah, AR5K_CR); } else { /* * Schedule TX disable and wait until queue is empty @@ -1456,6 +1513,8 @@ int ath5k_hw_stop_tx_dma(struct ath5k_hw *ah, unsigned int queue) /* Clear register */ ath5k_hw_reg_write(ah, 0, AR5K_QCU_TXD); + if (pending) + return -EBUSY; } /* TODO: Check for success else return error */ @@ -1684,6 +1743,7 @@ enum ath5k_int ath5k_hw_set_intr(struct ath5k_hw *ah, enum ath5k_int new_mask) * (they will be re-enabled afterwards). */ ath5k_hw_reg_write(ah, AR5K_IER_DISABLE, AR5K_IER); + ath5k_hw_reg_read(ah, AR5K_IER); old_mask = ah->ah_imr; @@ -1716,6 +1776,7 @@ enum ath5k_int ath5k_hw_set_intr(struct ath5k_hw *ah, enum ath5k_int new_mask) /* ..re-enable interrupts */ ath5k_hw_reg_write(ah, AR5K_IER_ENABLE, AR5K_IER); + ath5k_hw_reg_read(ah, AR5K_IER); return old_mask; } @@ -3359,11 +3420,13 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue) ath5k_hw_reg_write(ah, ah->ah_turbo ? AR5K_INIT_PROTO_TIME_CNTRL_TURBO : AR5K_INIT_PROTO_TIME_CNTRL, AR5K_IFS1); - /* Set PHY register 0x9844 (??) */ + /* Set AR5K_PHY_SETTLING */ ath5k_hw_reg_write(ah, ah->ah_turbo ? - (ath5k_hw_reg_read(ah, AR5K_PHY(17)) & ~0x7F) | 0x38 : - (ath5k_hw_reg_read(ah, AR5K_PHY(17)) & ~0x7F) | 0x1C, - AR5K_PHY(17)); + (ath5k_hw_reg_read(ah, AR5K_PHY_SETTLING) & ~0x7F) + | 0x38 : + (ath5k_hw_reg_read(ah, AR5K_PHY_SETTLING) & ~0x7F) + | 0x1C, + AR5K_PHY_SETTLING); /* Set Frame Control Register */ ath5k_hw_reg_write(ah, ah->ah_turbo ? (AR5K_PHY_FRAME_CTL_INI | AR5K_PHY_TURBO_MODE | @@ -3484,7 +3547,7 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue) if (tq->tqi_flags & AR5K_TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE) AR5K_REG_ENABLE_BITS(ah, AR5K_QUEUE_MISC(queue), - AR5K_QCU_MISC_TXE); + AR5K_QCU_MISC_RDY_VEOL_POLICY); } if (tq->tqi_flags & AR5K_TXQ_FLAG_BACKOFF_DISABLE) |