#include <linux/pci.h> /* To determine if a card is pci-e */
#include <linux/log2.h>
+#include <linux/platform_device.h>
#include "ath5k.h"
#include "reg.h"
#include "base.h"
#include "debug.h"
+
+/******************\
+* Helper functions *
+\******************/
+
/*
* Check if a register write has been completed
*/
return (i <= 0) ? -EAGAIN : 0;
}
+
+/*************************\
+* Clock related functions *
+\*************************/
+
/**
- * ath5k_hw_write_ofdm_timings - set OFDM timings on AR5212
+ * ath5k_hw_htoclock - Translate usec to hw clock units
*
- * @ah: the &struct ath5k_hw
- * @channel: the currently set channel upon reset
- *
- * Write the delta slope coefficient (used on pilot tracking ?) for OFDM
- * operation on the AR5212 upon reset. This is a helper for ath5k_hw_reset().
+ * @ah: The &struct ath5k_hw
+ * @usec: value in microseconds
+ */
+unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec)
+{
+ struct ath_common *common = ath5k_hw_common(ah);
+ return usec * common->clockrate;
+}
+
+/**
+ * ath5k_hw_clocktoh - Translate hw clock units to usec
+ * @clock: value in hw clock units
+ */
+unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock)
+{
+ struct ath_common *common = ath5k_hw_common(ah);
+ return clock / common->clockrate;
+}
+
+/**
+ * ath5k_hw_init_core_clock - Initialize core clock
*
- * Since delta slope is floating point we split it on its exponent and
- * mantissa and provide these values on hw.
+ * @ah The &struct ath5k_hw
*
- * For more infos i think this patent is related
- * http://www.freepatentsonline.com/7184495.html
+ * Initialize core clock parameters (usec, usec32, latencies etc).
*/
-static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw *ah,
- struct ieee80211_channel *channel)
+static void ath5k_hw_init_core_clock(struct ath5k_hw *ah)
{
- /* Get exponent and mantissa and set it */
- u32 coef_scaled, coef_exp, coef_man,
- ds_coef_exp, ds_coef_man, clock;
-
- BUG_ON(!(ah->ah_version == AR5K_AR5212) ||
- !(channel->hw_value & CHANNEL_OFDM));
-
- /* Get coefficient
- * ALGO: coef = (5 * clock / carrier_freq) / 2
- * we scale coef by shifting clock value by 24 for
- * better precision since we use integers */
- /* TODO: Half/quarter rate */
- clock = (channel->hw_value & CHANNEL_TURBO) ? 80 : 40;
- coef_scaled = ((5 * (clock << 24)) / 2) / channel->center_freq;
-
- /* Get exponent
- * ALGO: coef_exp = 14 - highest set bit position */
- coef_exp = ilog2(coef_scaled);
-
- /* Doesn't make sense if it's zero*/
- if (!coef_scaled || !coef_exp)
- return -EINVAL;
+ struct ieee80211_channel *channel = ah->ah_current_channel;
+ struct ath_common *common = ath5k_hw_common(ah);
+ u32 usec_reg, txlat, rxlat, usec, clock, sclock, txf2txs;
+
+ /*
+ * Set core clock frequency
+ */
+ if (channel->hw_value & CHANNEL_5GHZ)
+ clock = 40; /* 802.11a */
+ else if (channel->hw_value & CHANNEL_CCK)
+ clock = 22; /* 802.11b */
+ else
+ clock = 44; /* 802.11g */
+
+ /* Use clock multiplier for non-default
+ * bwmode */
+ switch (ah->ah_bwmode) {
+ case AR5K_BWMODE_40MHZ:
+ clock *= 2;
+ break;
+ case AR5K_BWMODE_10MHZ:
+ clock /= 2;
+ break;
+ case AR5K_BWMODE_5MHZ:
+ clock /= 4;
+ break;
+ default:
+ break;
+ }
- /* Note: we've shifted coef_scaled by 24 */
- coef_exp = 14 - (coef_exp - 24);
+ common->clockrate = clock;
+ /*
+ * Set USEC parameters
+ */
+ /* Set USEC counter on PCU*/
+ usec = clock - 1;
+ usec = AR5K_REG_SM(usec, AR5K_USEC_1);
- /* Get mantissa (significant digits)
- * ALGO: coef_mant = floor(coef_scaled* 2^coef_exp+0.5) */
- coef_man = coef_scaled +
- (1 << (24 - coef_exp - 1));
+ /* Set usec duration on DCU */
+ if (ah->ah_version != AR5K_AR5210)
+ AR5K_REG_WRITE_BITS(ah, AR5K_DCU_GBL_IFS_MISC,
+ AR5K_DCU_GBL_IFS_MISC_USEC_DUR,
+ clock);
- /* Calculate delta slope coefficient exponent
- * and mantissa (remove scaling) and set them on hw */
- ds_coef_man = coef_man >> (24 - coef_exp);
- ds_coef_exp = coef_exp - 16;
+ /* Set 32MHz USEC counter */
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_radio == AR5K_RF2316) ||
+ (ah->ah_radio == AR5K_RF2317))
+ /* Remain on 40MHz clock ? */
+ sclock = 40 - 1;
+ else
+ sclock = 32 - 1;
+ sclock = AR5K_REG_SM(sclock, AR5K_USEC_32);
- AR5K_REG_WRITE_BITS(ah, AR5K_PHY_TIMING_3,
- AR5K_PHY_TIMING_3_DSC_MAN, ds_coef_man);
- AR5K_REG_WRITE_BITS(ah, AR5K_PHY_TIMING_3,
- AR5K_PHY_TIMING_3_DSC_EXP, ds_coef_exp);
+ /*
+ * Set tx/rx latencies
+ */
+ usec_reg = ath5k_hw_reg_read(ah, AR5K_USEC_5211);
+ txlat = AR5K_REG_MS(usec_reg, AR5K_USEC_TX_LATENCY_5211);
+ rxlat = AR5K_REG_MS(usec_reg, AR5K_USEC_RX_LATENCY_5211);
- return 0;
-}
+ /*
+ * 5210 initvals don't include usec settings
+ * so we need to use magic values here for
+ * tx/rx latencies
+ */
+ if (ah->ah_version == AR5K_AR5210) {
+ /* same for turbo */
+ txlat = AR5K_INIT_TX_LATENCY_5210;
+ rxlat = AR5K_INIT_RX_LATENCY_5210;
+ }
+ if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
+ /* 5311 has different tx/rx latency masks
+ * from 5211, since we deal 5311 the same
+ * as 5211 when setting initvals, shift
+ * values here to their proper locations
+ *
+ * Note: Initvals indicate tx/rx/ latencies
+ * are the same for turbo mode */
+ txlat = AR5K_REG_SM(txlat, AR5K_USEC_TX_LATENCY_5210);
+ rxlat = AR5K_REG_SM(rxlat, AR5K_USEC_RX_LATENCY_5210);
+ } else
+ switch (ah->ah_bwmode) {
+ case AR5K_BWMODE_10MHZ:
+ txlat = AR5K_REG_SM(txlat * 2,
+ AR5K_USEC_TX_LATENCY_5211);
+ rxlat = AR5K_REG_SM(AR5K_INIT_RX_LAT_MAX,
+ AR5K_USEC_RX_LATENCY_5211);
+ txf2txs = AR5K_INIT_TXF2TXD_START_DELAY_10MHZ;
+ break;
+ case AR5K_BWMODE_5MHZ:
+ txlat = AR5K_REG_SM(txlat * 4,
+ AR5K_USEC_TX_LATENCY_5211);
+ rxlat = AR5K_REG_SM(AR5K_INIT_RX_LAT_MAX,
+ AR5K_USEC_RX_LATENCY_5211);
+ txf2txs = AR5K_INIT_TXF2TXD_START_DELAY_5MHZ;
+ break;
+ case AR5K_BWMODE_40MHZ:
+ txlat = AR5K_INIT_TX_LAT_MIN;
+ rxlat = AR5K_REG_SM(rxlat / 2,
+ AR5K_USEC_RX_LATENCY_5211);
+ txf2txs = AR5K_INIT_TXF2TXD_START_DEFAULT;
+ break;
+ default:
+ break;
+ }
-/*
- * index into rates for control rates, we can set it up like this because
- * this is only used for AR5212 and we know it supports G mode
- */
-static const unsigned int control_rates[] =
- { 0, 1, 1, 1, 4, 4, 6, 6, 8, 8, 8, 8 };
+ usec_reg = (usec | sclock | txlat | rxlat);
+ ath5k_hw_reg_write(ah, usec_reg, AR5K_USEC);
-/**
- * ath5k_hw_write_rate_duration - fill rate code to duration table
- *
- * @ah: the &struct ath5k_hw
- * @mode: one of enum ath5k_driver_mode
- *
- * Write the rate code to duration table upon hw reset. This is a helper for
- * ath5k_hw_reset(). It seems all this is doing is setting an ACK timeout on
- * the hardware, based on current mode, for each rate. The rates which are
- * capable of short preamble (802.11b rates 2Mbps, 5.5Mbps, and 11Mbps) have
- * different rate code so we write their value twice (one for long preample
- * and one for short).
+ /* On 5112 set tx frane to tx data start delay */
+ if (ah->ah_radio == AR5K_RF5112) {
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_RF_CTL2,
+ AR5K_PHY_RF_CTL2_TXF2TXD_START,
+ txf2txs);
+ }
+}
+
+/*
+ * If there is an external 32KHz crystal available, use it
+ * as ref. clock instead of 32/40MHz clock and baseband clocks
+ * to save power during sleep or restore normal 32/40MHz
+ * operation.
*
- * Note: Band doesn't matter here, if we set the values for OFDM it works
- * on both a and g modes. So all we have to do is set values for all g rates
- * that include all OFDM and CCK rates. If we operate in turbo or xr/half/
- * quarter rate mode, we need to use another set of bitrates (that's why we
- * need the mode parameter) but we don't handle these proprietary modes yet.
+ * XXX: When operating on 32KHz certain PHY registers (27 - 31,
+ * 123 - 127) require delay on access.
*/
-static inline void ath5k_hw_write_rate_duration(struct ath5k_hw *ah,
- unsigned int mode)
+static void ath5k_hw_set_sleep_clock(struct ath5k_hw *ah, bool enable)
{
- struct ath5k_softc *sc = ah->ah_sc;
- struct ieee80211_rate *rate;
- unsigned int i;
+ struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
+ u32 scal, spending;
+
+ /* Only set 32KHz settings if we have an external
+ * 32KHz crystal present */
+ if ((AR5K_EEPROM_HAS32KHZCRYSTAL(ee->ee_misc1) ||
+ AR5K_EEPROM_HAS32KHZCRYSTAL_OLD(ee->ee_misc1)) &&
+ enable) {
- /* Write rate duration table */
- for (i = 0; i < sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates; i++) {
- u32 reg;
- u16 tx_time;
+ /* 1 usec/cycle */
+ AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, 1);
+ /* Set up tsf increment on each cycle */
+ AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 61);
- rate = &sc->sbands[IEEE80211_BAND_2GHZ].bitrates[control_rates[i]];
+ /* Set baseband sleep control registers
+ * and sleep control rate */
+ ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR);
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_radio == AR5K_RF2316) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
+ spending = 0x14;
+ else
+ spending = 0x18;
+ ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING);
- /* Set ACK timeout */
- reg = AR5K_RATE_DUR(rate->hw_value);
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) {
+ ath5k_hw_reg_write(ah, 0x26, AR5K_PHY_SLMT);
+ ath5k_hw_reg_write(ah, 0x0d, AR5K_PHY_SCAL);
+ ath5k_hw_reg_write(ah, 0x07, AR5K_PHY_SCLOCK);
+ ath5k_hw_reg_write(ah, 0x3f, AR5K_PHY_SDELAY);
+ AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x02);
+ } else {
+ ath5k_hw_reg_write(ah, 0x0a, AR5K_PHY_SLMT);
+ ath5k_hw_reg_write(ah, 0x0c, AR5K_PHY_SCAL);
+ ath5k_hw_reg_write(ah, 0x03, AR5K_PHY_SCLOCK);
+ ath5k_hw_reg_write(ah, 0x20, AR5K_PHY_SDELAY);
+ AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x03);
+ }
- /* An ACK frame consists of 10 bytes. If you add the FCS,
- * which ieee80211_generic_frame_duration() adds,
- * its 14 bytes. Note we use the control rate and not the
- * actual rate for this rate. See mac80211 tx.c
- * ieee80211_duration() for a brief description of
- * what rate we should choose to TX ACKs. */
- tx_time = le16_to_cpu(ieee80211_generic_frame_duration(sc->hw,
- NULL, 10, rate));
+ /* Enable sleep clock operation */
+ AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_EN);
- ath5k_hw_reg_write(ah, tx_time, reg);
+ } else {
- if (!(rate->flags & IEEE80211_RATE_SHORT_PREAMBLE))
- continue;
+ /* Disable sleep clock operation and
+ * restore default parameters */
+ AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_EN);
- /*
- * We're not distinguishing short preamble here,
- * This is true, all we'll get is a longer value here
- * which is not necessarilly bad. We could use
- * export ieee80211_frame_duration() but that needs to be
- * fixed first to be properly used by mac802111 drivers:
- *
- * - remove erp stuff and let the routine figure ofdm
- * erp rates
- * - remove passing argument ieee80211_local as
- * drivers don't have access to it
- * - move drivers using ieee80211_generic_frame_duration()
- * to this
- */
- ath5k_hw_reg_write(ah, tx_time,
- reg + (AR5K_SET_SHORT_PREAMBLE << 2));
+ AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_RATE, 0);
+
+ /* Set DAC/ADC delays */
+ ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR);
+ ath5k_hw_reg_write(ah, AR5K_PHY_SLMT_32MHZ, AR5K_PHY_SLMT);
+
+ if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))
+ scal = AR5K_PHY_SCAL_32MHZ_2417;
+ else if (ee->ee_is_hb63)
+ scal = AR5K_PHY_SCAL_32MHZ_HB63;
+ else
+ scal = AR5K_PHY_SCAL_32MHZ;
+ ath5k_hw_reg_write(ah, scal, AR5K_PHY_SCAL);
+
+ ath5k_hw_reg_write(ah, AR5K_PHY_SCLOCK_32MHZ, AR5K_PHY_SCLOCK);
+ ath5k_hw_reg_write(ah, AR5K_PHY_SDELAY_32MHZ, AR5K_PHY_SDELAY);
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_radio == AR5K_RF2316) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
+ spending = 0x14;
+ else
+ spending = 0x18;
+ ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING);
+
+ /* Set up tsf increment on each cycle */
+ AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 1);
}
}
+
+/*********************\
+* Reset/Sleep control *
+\*********************/
+
/*
* Reset chipset
*/
return ret;
}
+/*
+ * Reset AHB chipset
+ * AR5K_RESET_CTL_PCU flag resets WMAC
+ * AR5K_RESET_CTL_BASEBAND flag resets WBB
+ */
+static int ath5k_hw_wisoc_reset(struct ath5k_hw *ah, u32 flags)
+{
+ u32 mask = flags ? flags : ~0U;
+ volatile u32 *reg;
+ u32 regval;
+ u32 val = 0;
+
+ /* ah->ah_mac_srev is not available at this point yet */
+ if (ah->ah_sc->devid >= AR5K_SREV_AR2315_R6) {
+ reg = (u32 *) AR5K_AR2315_RESET;
+ if (mask & AR5K_RESET_CTL_PCU)
+ val |= AR5K_AR2315_RESET_WMAC;
+ if (mask & AR5K_RESET_CTL_BASEBAND)
+ val |= AR5K_AR2315_RESET_BB_WARM;
+ } else {
+ reg = (u32 *) AR5K_AR5312_RESET;
+ if (to_platform_device(ah->ah_sc->dev)->id == 0) {
+ if (mask & AR5K_RESET_CTL_PCU)
+ val |= AR5K_AR5312_RESET_WMAC0;
+ if (mask & AR5K_RESET_CTL_BASEBAND)
+ val |= AR5K_AR5312_RESET_BB0_COLD |
+ AR5K_AR5312_RESET_BB0_WARM;
+ } else {
+ if (mask & AR5K_RESET_CTL_PCU)
+ val |= AR5K_AR5312_RESET_WMAC1;
+ if (mask & AR5K_RESET_CTL_BASEBAND)
+ val |= AR5K_AR5312_RESET_BB1_COLD |
+ AR5K_AR5312_RESET_BB1_WARM;
+ }
+ }
+
+ /* Put BB/MAC into reset */
+ regval = __raw_readl(reg);
+ __raw_writel(regval | val, reg);
+ regval = __raw_readl(reg);
+ udelay(100);
+
+ /* Bring BB/MAC out of reset */
+ __raw_writel(regval & ~val, reg);
+ regval = __raw_readl(reg);
+
+ /*
+ * Reset configuration register (for hw byte-swap). Note that this
+ * is only set for big endian. We do the necessary magic in
+ * AR5K_INIT_CFG.
+ */
+ if ((flags & AR5K_RESET_CTL_PCU) == 0)
+ ath5k_hw_reg_write(ah, AR5K_INIT_CFG, AR5K_CFG);
+
+ return 0;
+}
+
+
/*
* Sleep control
*/
u32 bus_flags;
int ret;
+ if (ath5k_get_bus_type(ah) == ATH_AHB)
+ return 0;
+
/* Make sure device is awake */
ret = ath5k_hw_set_power(ah, AR5K_PM_AWAKE, true, 0);
if (ret) {
* we ingore that flag for PCI-E cards. On PCI cards
* this flag gets cleared after 64 PCI clocks.
*/
- bus_flags = (pdev->is_pcie) ? 0 : AR5K_RESET_CTL_PCI;
+ bus_flags = (pdev && pci_is_pcie(pdev)) ? 0 : AR5K_RESET_CTL_PCI;
if (ah->ah_version == AR5K_AR5210) {
ret = ath5k_hw_nic_reset(ah, AR5K_RESET_CTL_PCU |
/*
* Bring up MAC + PHY Chips and program PLL
- * TODO: Half/Quarter rate support
*/
int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial)
{
mode = 0;
clock = 0;
- /* Wakeup the device */
- ret = ath5k_hw_set_power(ah, AR5K_PM_AWAKE, true, 0);
- if (ret) {
- ATH5K_ERR(ah->ah_sc, "failed to wakeup the MAC Chip\n");
- return ret;
+ if ((ath5k_get_bus_type(ah) != ATH_AHB) || !initial) {
+ /* Wakeup the device */
+ ret = ath5k_hw_set_power(ah, AR5K_PM_AWAKE, true, 0);
+ if (ret) {
+ ATH5K_ERR(ah->ah_sc, "failed to wakeup the MAC Chip\n");
+ return ret;
+ }
}
/*
* we ingore that flag for PCI-E cards. On PCI cards
* this flag gets cleared after 64 PCI clocks.
*/
- bus_flags = (pdev->is_pcie) ? 0 : AR5K_RESET_CTL_PCI;
+ bus_flags = (pdev && pci_is_pcie(pdev)) ? 0 : AR5K_RESET_CTL_PCI;
if (ah->ah_version == AR5K_AR5210) {
ret = ath5k_hw_nic_reset(ah, AR5K_RESET_CTL_PCU |
AR5K_RESET_CTL_PHY | AR5K_RESET_CTL_PCI);
mdelay(2);
} else {
- ret = ath5k_hw_nic_reset(ah, AR5K_RESET_CTL_PCU |
- AR5K_RESET_CTL_BASEBAND | bus_flags);
+ if (ath5k_get_bus_type(ah) == ATH_AHB)
+ ret = ath5k_hw_wisoc_reset(ah, AR5K_RESET_CTL_PCU |
+ AR5K_RESET_CTL_BASEBAND);
+ else
+ ret = ath5k_hw_nic_reset(ah, AR5K_RESET_CTL_PCU |
+ AR5K_RESET_CTL_BASEBAND | bus_flags);
}
if (ret) {
return ret;
}
- /* ...clear reset control register and pull device out of
- * warm reset */
- if (ath5k_hw_nic_reset(ah, 0)) {
+ /* ...reset configuration regiter on Wisoc ...
+ * ...clear reset control register and pull device out of
+ * warm reset on others */
+ if (ath5k_get_bus_type(ah) == ATH_AHB)
+ ret = ath5k_hw_wisoc_reset(ah, 0);
+ else
+ ret = ath5k_hw_nic_reset(ah, 0);
+
+ if (ret) {
ATH5K_ERR(ah->ah_sc, "failed to warm reset the MAC Chip\n");
return -EIO;
}
* CCK headers) operation. We need to test
* this, 5211 might support ofdm-only g after
* all, there are also initial register values
- * in the code for g mode (see initvals.c). */
+ * in the code for g mode (see initvals.c).
+ */
if (ah->ah_version == AR5K_AR5211)
mode |= AR5K_PHY_MODE_MOD_OFDM;
else
} else if (flags & CHANNEL_5GHZ) {
mode |= AR5K_PHY_MODE_FREQ_5GHZ;
+ /* Different PLL setting for 5413 */
if (ah->ah_radio == AR5K_RF5413)
clock = AR5K_PHY_PLL_40MHZ_5413;
else
return -EINVAL;
}
- if (flags & CHANNEL_TURBO)
- turbo = AR5K_PHY_TURBO_MODE | AR5K_PHY_TURBO_SHORT;
+ /*XXX: Can bwmode be used with dynamic mode ?
+ * (I don't think it supports 44MHz) */
+ /* On 2425 initvals TURBO_SHORT is not pressent */
+ if (ah->ah_bwmode == AR5K_BWMODE_40MHZ) {
+ turbo = AR5K_PHY_TURBO_MODE |
+ (ah->ah_radio == AR5K_RF2425) ? 0 :
+ AR5K_PHY_TURBO_SHORT;
+ } else if (ah->ah_bwmode != AR5K_BWMODE_DEFAULT) {
+ if (ah->ah_radio == AR5K_RF5413) {
+ mode |= (ah->ah_bwmode == AR5K_BWMODE_10MHZ) ?
+ AR5K_PHY_MODE_HALF_RATE :
+ AR5K_PHY_MODE_QUARTER_RATE;
+ } else if (ah->ah_version == AR5K_AR5212) {
+ clock |= (ah->ah_bwmode == AR5K_BWMODE_10MHZ) ?
+ AR5K_PHY_PLL_HALF_RATE :
+ AR5K_PHY_PLL_QUARTER_RATE;
+ }
+ }
+
} else { /* Reset the device */
/* ...enable Atheros turbo mode if requested */
- if (flags & CHANNEL_TURBO)
+ if (ah->ah_bwmode == AR5K_BWMODE_40MHZ)
ath5k_hw_reg_write(ah, AR5K_PHY_TURBO_MODE,
AR5K_PHY_TURBO);
}
return 0;
}
-/*
- * If there is an external 32KHz crystal available, use it
- * as ref. clock instead of 32/40MHz clock and baseband clocks
- * to save power during sleep or restore normal 32/40MHz
- * operation.
- *
- * XXX: When operating on 32KHz certain PHY registers (27 - 31,
- * 123 - 127) require delay on access.
- */
-static void ath5k_hw_set_sleep_clock(struct ath5k_hw *ah, bool enable)
-{
- struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
- u32 scal, spending, usec32;
- /* Only set 32KHz settings if we have an external
- * 32KHz crystal present */
- if ((AR5K_EEPROM_HAS32KHZCRYSTAL(ee->ee_misc1) ||
- AR5K_EEPROM_HAS32KHZCRYSTAL_OLD(ee->ee_misc1)) &&
- enable) {
-
- /* 1 usec/cycle */
- AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, 1);
- /* Set up tsf increment on each cycle */
- AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 61);
-
- /* Set baseband sleep control registers
- * and sleep control rate */
- ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR);
-
- if ((ah->ah_radio == AR5K_RF5112) ||
- (ah->ah_radio == AR5K_RF5413) ||
- (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
- spending = 0x14;
- else
- spending = 0x18;
- ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING);
-
- if ((ah->ah_radio == AR5K_RF5112) ||
- (ah->ah_radio == AR5K_RF5413) ||
- (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) {
- ath5k_hw_reg_write(ah, 0x26, AR5K_PHY_SLMT);
- ath5k_hw_reg_write(ah, 0x0d, AR5K_PHY_SCAL);
- ath5k_hw_reg_write(ah, 0x07, AR5K_PHY_SCLOCK);
- ath5k_hw_reg_write(ah, 0x3f, AR5K_PHY_SDELAY);
- AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
- AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x02);
- } else {
- ath5k_hw_reg_write(ah, 0x0a, AR5K_PHY_SLMT);
- ath5k_hw_reg_write(ah, 0x0c, AR5K_PHY_SCAL);
- ath5k_hw_reg_write(ah, 0x03, AR5K_PHY_SCLOCK);
- ath5k_hw_reg_write(ah, 0x20, AR5K_PHY_SDELAY);
- AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
- AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x03);
- }
-
- /* Enable sleep clock operation */
- AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG,
- AR5K_PCICFG_SLEEP_CLOCK_EN);
-
- } else {
-
- /* Disable sleep clock operation and
- * restore default parameters */
- AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG,
- AR5K_PCICFG_SLEEP_CLOCK_EN);
-
- AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
- AR5K_PCICFG_SLEEP_CLOCK_RATE, 0);
-
- ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR);
- ath5k_hw_reg_write(ah, AR5K_PHY_SLMT_32MHZ, AR5K_PHY_SLMT);
-
- if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))
- scal = AR5K_PHY_SCAL_32MHZ_2417;
- else if (ee->ee_is_hb63)
- scal = AR5K_PHY_SCAL_32MHZ_HB63;
- else
- scal = AR5K_PHY_SCAL_32MHZ;
- ath5k_hw_reg_write(ah, scal, AR5K_PHY_SCAL);
-
- ath5k_hw_reg_write(ah, AR5K_PHY_SCLOCK_32MHZ, AR5K_PHY_SCLOCK);
- ath5k_hw_reg_write(ah, AR5K_PHY_SDELAY_32MHZ, AR5K_PHY_SDELAY);
-
- if ((ah->ah_radio == AR5K_RF5112) ||
- (ah->ah_radio == AR5K_RF5413) ||
- (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
- spending = 0x14;
- else
- spending = 0x18;
- ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING);
-
- if ((ah->ah_radio == AR5K_RF5112) ||
- (ah->ah_radio == AR5K_RF5413))
- usec32 = 39;
- else
- usec32 = 31;
- AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, usec32);
-
- AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 1);
- }
-}
+/**************************************\
+* Post-initvals register modifications *
+\**************************************/
/* TODO: Half/Quarter rate */
static void ath5k_hw_tweak_initval_settings(struct ath5k_hw *ah,
AR5K_REG_DISABLE_BITS(ah, AR5K_TXCFG,
AR5K_TXCFG_DCU_DBL_BUF_DIS);
- /* Set DAC/ADC delays */
- if (ah->ah_version == AR5K_AR5212) {
- u32 scal;
- struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
- if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))
- scal = AR5K_PHY_SCAL_32MHZ_2417;
- else if (ee->ee_is_hb63)
- scal = AR5K_PHY_SCAL_32MHZ_HB63;
- else
- scal = AR5K_PHY_SCAL_32MHZ;
- ath5k_hw_reg_write(ah, scal, AR5K_PHY_SCAL);
- }
-
/* Set fast ADC */
if ((ah->ah_radio == AR5K_RF5413) ||
- (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) {
+ (ah->ah_radio == AR5K_RF2317) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) {
u32 fast_adc = true;
if (channel->center_freq == 2462 ||
}
if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
- u32 usec_reg;
- /* 5311 has different tx/rx latency masks
- * from 5211, since we deal 5311 the same
- * as 5211 when setting initvals, shift
- * values here to their proper locations */
- usec_reg = ath5k_hw_reg_read(ah, AR5K_USEC_5211);
- ath5k_hw_reg_write(ah, usec_reg & (AR5K_USEC_1 |
- AR5K_USEC_32 |
- AR5K_USEC_TX_LATENCY_5211 |
- AR5K_REG_SM(29,
- AR5K_USEC_RX_LATENCY_5210)),
- AR5K_USEC_5211);
/* Clear QCU/DCU clock gating register */
ath5k_hw_reg_write(ah, 0, AR5K_QCUDCU_CLKGT);
/* Set DAC/ADC delays */
- ath5k_hw_reg_write(ah, 0x08, AR5K_PHY_SCAL);
+ ath5k_hw_reg_write(ah, AR5K_PHY_SCAL_32MHZ_5311,
+ AR5K_PHY_SCAL);
/* Enable PCU FIFO corruption ECO */
AR5K_REG_ENABLE_BITS(ah, AR5K_DIAG_SW_5211,
AR5K_DIAG_SW_ECO_ENABLE);
}
+
+ if (ah->ah_bwmode) {
+ /* Increase PHY switch and AGC settling time
+ * on turbo mode (ath5k_hw_commit_eeprom_settings
+ * will override settling time if available) */
+ if (ah->ah_bwmode == AR5K_BWMODE_40MHZ) {
+
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_SETTLING,
+ AR5K_PHY_SETTLING_AGC,
+ AR5K_AGC_SETTLING_TURBO);
+
+ /* XXX: Initvals indicate we only increase
+ * switch time on AR5212, 5211 and 5210
+ * only change agc time (bug?) */
+ if (ah->ah_version == AR5K_AR5212)
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_SETTLING,
+ AR5K_PHY_SETTLING_SWITCH,
+ AR5K_SWITCH_SETTLING_TURBO);
+
+ if (ah->ah_version == AR5K_AR5210) {
+ /* Set Frame Control Register */
+ ath5k_hw_reg_write(ah,
+ (AR5K_PHY_FRAME_CTL_INI |
+ AR5K_PHY_TURBO_MODE |
+ AR5K_PHY_TURBO_SHORT | 0x2020),
+ AR5K_PHY_FRAME_CTL_5210);
+ }
+ /* On 5413 PHY force window length for half/quarter rate*/
+ } else if ((ah->ah_mac_srev >= AR5K_SREV_AR5424) &&
+ (ah->ah_mac_srev <= AR5K_SREV_AR5414)) {
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_FRAME_CTL_5211,
+ AR5K_PHY_FRAME_CTL_WIN_LEN,
+ 3);
+ }
+ } else if (ah->ah_version == AR5K_AR5210) {
+ /* Set Frame Control Register for normal operation */
+ ath5k_hw_reg_write(ah, (AR5K_PHY_FRAME_CTL_INI | 0x1020),
+ AR5K_PHY_FRAME_CTL_5210);
+ }
}
static void ath5k_hw_commit_eeprom_settings(struct ath5k_hw *ah,
- struct ieee80211_channel *channel, u8 ee_mode)
+ struct ieee80211_channel *channel)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
s16 cck_ofdm_pwr_delta;
+ u8 ee_mode;
+
+ /* TODO: Add support for AR5210 EEPROM */
+ if (ah->ah_version == AR5K_AR5210)
+ return;
+
+ ee_mode = ath5k_eeprom_mode_from_channel(channel);
/* Adjust power delta for channel 14 */
if (channel->center_freq == 2484)
AR5K_PHY_NF_SVAL(ee->ee_noise_floor_thr[ee_mode]),
AR5K_PHY_NFTHRES);
- if ((channel->hw_value & CHANNEL_TURBO) &&
+ if ((ah->ah_bwmode == AR5K_BWMODE_40MHZ) &&
(ah->ah_ee_version >= AR5K_EEPROM_VERSION_5_0)) {
/* Switch settling time (Turbo) */
AR5K_REG_WRITE_BITS(ah, AR5K_PHY_SETTLING,
ath5k_hw_reg_write(ah, 0, AR5K_PHY_HEAVY_CLIP_ENABLE);
}
-/*
- * Main reset function
- */
+
+/*********************\
+* Main reset function *
+\*********************/
+
int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
- struct ieee80211_channel *channel, bool change_channel)
+ struct ieee80211_channel *channel, bool fast, bool skip_pcu)
{
- struct ath_common *common = ath5k_hw_common(ah);
- u32 s_seq[10], s_led[3], staid1_flags, tsf_up, tsf_lo;
- u32 phy_tst1;
- u8 mode, freq, ee_mode;
+ u32 s_seq[10], s_led[3], tsf_up, tsf_lo;
+ u8 mode;
int i, ret;
- ee_mode = 0;
- staid1_flags = 0;
tsf_up = 0;
tsf_lo = 0;
- freq = 0;
mode = 0;
/*
- * Save some registers before a reset
+ * Sanity check for fast flag
+ * Fast channel change only available
+ * on AR2413/AR5413.
*/
- /*DCU/Antenna selection not available on 5210*/
- if (ah->ah_version != AR5K_AR5210) {
+ if (fast && (ah->ah_radio != AR5K_RF2413) &&
+ (ah->ah_radio != AR5K_RF5413))
+ fast = 0;
- switch (channel->hw_value & CHANNEL_MODES) {
- case CHANNEL_A:
- mode = AR5K_MODE_11A;
- freq = AR5K_INI_RFGAIN_5GHZ;
- ee_mode = AR5K_EEPROM_MODE_11A;
- break;
- case CHANNEL_G:
- mode = AR5K_MODE_11G;
- freq = AR5K_INI_RFGAIN_2GHZ;
- ee_mode = AR5K_EEPROM_MODE_11G;
- break;
- case CHANNEL_B:
- mode = AR5K_MODE_11B;
- freq = AR5K_INI_RFGAIN_2GHZ;
- ee_mode = AR5K_EEPROM_MODE_11B;
- break;
- case CHANNEL_T:
- mode = AR5K_MODE_11A_TURBO;
- freq = AR5K_INI_RFGAIN_5GHZ;
- ee_mode = AR5K_EEPROM_MODE_11A;
- break;
- case CHANNEL_TG:
- if (ah->ah_version == AR5K_AR5211) {
- ATH5K_ERR(ah->ah_sc,
- "TurboG mode not available on 5211");
- return -EINVAL;
- }
- mode = AR5K_MODE_11G_TURBO;
- freq = AR5K_INI_RFGAIN_2GHZ;
- ee_mode = AR5K_EEPROM_MODE_11G;
- break;
- case CHANNEL_XR:
- if (ah->ah_version == AR5K_AR5211) {
- ATH5K_ERR(ah->ah_sc,
- "XR mode not available on 5211");
- return -EINVAL;
- }
- mode = AR5K_MODE_XR;
- freq = AR5K_INI_RFGAIN_5GHZ;
- ee_mode = AR5K_EEPROM_MODE_11A;
- break;
- default:
+ /* Disable sleep clock operation
+ * to avoid register access delay on certain
+ * PHY registers */
+ if (ah->ah_version == AR5K_AR5212)
+ ath5k_hw_set_sleep_clock(ah, false);
+
+ /*
+ * Stop PCU
+ */
+ ath5k_hw_stop_rx_pcu(ah);
+
+ /*
+ * Stop DMA
+ *
+ * Note: If DMA didn't stop continue
+ * since only a reset will fix it.
+ */
+ ret = ath5k_hw_dma_stop(ah);
+
+ /* RF Bus grant won't work if we have pending
+ * frames */
+ if (ret && fast) {
+ ATH5K_DBG(ah->ah_sc, ATH5K_DEBUG_RESET,
+ "DMA didn't stop, falling back to normal reset\n");
+ fast = 0;
+ /* Non fatal, just continue with
+ * normal reset */
+ ret = 0;
+ }
+
+ switch (channel->hw_value & CHANNEL_MODES) {
+ case CHANNEL_A:
+ mode = AR5K_MODE_11A;
+ break;
+ case CHANNEL_G:
+
+ if (ah->ah_version <= AR5K_AR5211) {
ATH5K_ERR(ah->ah_sc,
- "invalid channel: %d\n", channel->center_freq);
+ "G mode not available on 5210/5211");
return -EINVAL;
}
- if (change_channel) {
- /*
- * Save frame sequence count
- * For revs. after Oahu, only save
- * seq num for DCU 0 (Global seq num)
- */
- if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
-
- for (i = 0; i < 10; i++)
- s_seq[i] = ath5k_hw_reg_read(ah,
- AR5K_QUEUE_DCU_SEQNUM(i));
+ mode = AR5K_MODE_11G;
+ break;
+ case CHANNEL_B:
- } else {
- s_seq[0] = ath5k_hw_reg_read(ah,
- AR5K_QUEUE_DCU_SEQNUM(0));
- }
+ if (ah->ah_version < AR5K_AR5211) {
+ ATH5K_ERR(ah->ah_sc,
+ "B mode not available on 5210");
+ return -EINVAL;
+ }
- /* TSF accelerates on AR5211 during reset
- * As a workaround save it here and restore
- * it later so that it's back in time after
- * reset. This way it'll get re-synced on the
- * next beacon without breaking ad-hoc.
- *
- * On AR5212 TSF is almost preserved across a
- * reset so it stays back in time anyway and
- * we don't have to save/restore it.
- *
- * XXX: Since this breaks power saving we have
- * to disable power saving until we receive the
- * next beacon, so we can resync beacon timers */
- if (ah->ah_version == AR5K_AR5211) {
- tsf_up = ath5k_hw_reg_read(ah, AR5K_TSF_U32);
- tsf_lo = ath5k_hw_reg_read(ah, AR5K_TSF_L32);
- }
+ mode = AR5K_MODE_11B;
+ break;
+ case CHANNEL_XR:
+ if (ah->ah_version == AR5K_AR5211) {
+ ATH5K_ERR(ah->ah_sc,
+ "XR mode not available on 5211");
+ return -EINVAL;
}
+ mode = AR5K_MODE_XR;
+ break;
+ default:
+ ATH5K_ERR(ah->ah_sc,
+ "invalid channel: %d\n", channel->center_freq);
+ return -EINVAL;
+ }
- if (ah->ah_version == AR5K_AR5212) {
- /* Restore normal 32/40MHz clock operation
- * to avoid register access delay on certain
- * PHY registers */
- ath5k_hw_set_sleep_clock(ah, false);
+ /*
+ * If driver requested fast channel change and DMA has stopped
+ * go on. If it fails continue with a normal reset.
+ */
+ if (fast) {
+ ret = ath5k_hw_phy_init(ah, channel, mode, true);
+ if (ret) {
+ ATH5K_DBG(ah->ah_sc, ATH5K_DEBUG_RESET,
+ "fast chan change failed, falling back to normal reset\n");
+ /* Non fatal, can happen eg.
+ * on mode change */
+ ret = 0;
+ } else
+ return 0;
+ }
- /* Since we are going to write rf buffer
- * check if we have any pending gain_F
- * optimization settings */
- if (change_channel && ah->ah_rf_banks != NULL)
- ath5k_hw_gainf_calibrate(ah);
+ /*
+ * Save some registers before a reset
+ */
+ if (ah->ah_version != AR5K_AR5210) {
+ /*
+ * Save frame sequence count
+ * For revs. after Oahu, only save
+ * seq num for DCU 0 (Global seq num)
+ */
+ if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
+
+ for (i = 0; i < 10; i++)
+ s_seq[i] = ath5k_hw_reg_read(ah,
+ AR5K_QUEUE_DCU_SEQNUM(i));
+
+ } else {
+ s_seq[0] = ath5k_hw_reg_read(ah,
+ AR5K_QUEUE_DCU_SEQNUM(0));
+ }
+
+ /* TSF accelerates on AR5211 during reset
+ * As a workaround save it here and restore
+ * it later so that it's back in time after
+ * reset. This way it'll get re-synced on the
+ * next beacon without breaking ad-hoc.
+ *
+ * On AR5212 TSF is almost preserved across a
+ * reset so it stays back in time anyway and
+ * we don't have to save/restore it.
+ *
+ * XXX: Since this breaks power saving we have
+ * to disable power saving until we receive the
+ * next beacon, so we can resync beacon timers */
+ if (ah->ah_version == AR5K_AR5211) {
+ tsf_up = ath5k_hw_reg_read(ah, AR5K_TSF_U32);
+ tsf_lo = ath5k_hw_reg_read(ah, AR5K_TSF_L32);
}
}
+
/*GPIOs*/
s_led[0] = ath5k_hw_reg_read(ah, AR5K_PCICFG) &
AR5K_PCICFG_LEDSTATE;
s_led[1] = ath5k_hw_reg_read(ah, AR5K_GPIOCR);
s_led[2] = ath5k_hw_reg_read(ah, AR5K_GPIODO);
- /* AR5K_STA_ID1 flags, only preserve antenna
- * settings and ack/cts rate mode */
- staid1_flags = ath5k_hw_reg_read(ah, AR5K_STA_ID1) &
- (AR5K_STA_ID1_DEFAULT_ANTENNA |
- AR5K_STA_ID1_DESC_ANTENNA |
- AR5K_STA_ID1_RTS_DEF_ANTENNA |
- AR5K_STA_ID1_ACKCTS_6MB |
- AR5K_STA_ID1_BASE_RATE_11B |
- AR5K_STA_ID1_SELFGEN_DEF_ANT);
+
+ /*
+ * Since we are going to write rf buffer
+ * check if we have any pending gain_F
+ * optimization settings
+ */
+ if (ah->ah_version == AR5K_AR5212 &&
+ (ah->ah_radio <= AR5K_RF5112)) {
+ if (!fast && ah->ah_rf_banks != NULL)
+ ath5k_hw_gainf_calibrate(ah);
+ }
/* Wakeup the device */
ret = ath5k_hw_nic_wakeup(ah, channel->hw_value, false);
AR5K_PHY(0));
/* Write initial settings */
- ret = ath5k_hw_write_initvals(ah, mode, change_channel);
+ ret = ath5k_hw_write_initvals(ah, mode, skip_pcu);
if (ret)
return ret;
+ /* Initialize core clock settings */
+ ath5k_hw_init_core_clock(ah);
+
/*
- * 5211/5212 Specific
+ * Tweak initval settings for revised
+ * chipsets and add some more config
+ * bits
*/
- if (ah->ah_version != AR5K_AR5210) {
-
- /*
- * Write initial RF gain settings
- * This should work for both 5111/5112
- */
- ret = ath5k_hw_rfgain_init(ah, freq);
- if (ret)
- return ret;
-
- mdelay(1);
-
- /*
- * Tweak initval settings for revised
- * chipsets and add some more config
- * bits
- */
- ath5k_hw_tweak_initval_settings(ah, channel);
-
- /*
- * Set TX power
- */
- ret = ath5k_hw_txpower(ah, channel, ee_mode,
- ah->ah_txpower.txp_max_pwr / 2);
- if (ret)
- return ret;
+ ath5k_hw_tweak_initval_settings(ah, channel);
- /* Write rate duration table only on AR5212 and if
- * virtual interface has already been brought up
- * XXX: rethink this after new mode changes to
- * mac80211 are integrated */
- if (ah->ah_version == AR5K_AR5212 &&
- ah->ah_sc->nvifs)
- ath5k_hw_write_rate_duration(ah, mode);
+ /* Commit values from EEPROM */
+ ath5k_hw_commit_eeprom_settings(ah, channel);
- /*
- * Write RF buffer
- */
- ret = ath5k_hw_rfregs_init(ah, channel, mode);
- if (ret)
- return ret;
-
-
- /* Write OFDM timings on 5212*/
- if (ah->ah_version == AR5K_AR5212 &&
- channel->hw_value & CHANNEL_OFDM) {
-
- ret = ath5k_hw_write_ofdm_timings(ah, channel);
- if (ret)
- return ret;
-
- /* Spur info is available only from EEPROM versions
- * greater than 5.3, but the EEPROM routines will use
- * static values for older versions */
- if (ah->ah_mac_srev >= AR5K_SREV_AR5424)
- ath5k_hw_set_spur_mitigation_filter(ah,
- channel);
- }
-
- /*Enable/disable 802.11b mode on 5111
- (enable 2111 frequency converter + CCK)*/
- if (ah->ah_radio == AR5K_RF5111) {
- if (mode == AR5K_MODE_11B)
- AR5K_REG_ENABLE_BITS(ah, AR5K_TXCFG,
- AR5K_TXCFG_B_MODE);
- else
- AR5K_REG_DISABLE_BITS(ah, AR5K_TXCFG,
- AR5K_TXCFG_B_MODE);
- }
-
- /* Commit values from EEPROM */
- ath5k_hw_commit_eeprom_settings(ah, channel, ee_mode);
-
- } else {
- /*
- * For 5210 we do all initialization using
- * initvals, so we don't have to modify
- * any settings (5210 also only supports
- * a/aturbo modes)
- */
- mdelay(1);
- /* Disable phy and wait */
- ath5k_hw_reg_write(ah, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT);
- mdelay(1);
- }
/*
* Restore saved values
*/
- /*DCU/Antenna selection not available on 5210*/
+ /* Seqnum, TSF */
if (ah->ah_version != AR5K_AR5210) {
+ if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
+ for (i = 0; i < 10; i++)
+ ath5k_hw_reg_write(ah, s_seq[i],
+ AR5K_QUEUE_DCU_SEQNUM(i));
+ } else {
+ ath5k_hw_reg_write(ah, s_seq[0],
+ AR5K_QUEUE_DCU_SEQNUM(0));
+ }
- if (change_channel) {
- if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
- for (i = 0; i < 10; i++)
- ath5k_hw_reg_write(ah, s_seq[i],
- AR5K_QUEUE_DCU_SEQNUM(i));
- } else {
- ath5k_hw_reg_write(ah, s_seq[0],
- AR5K_QUEUE_DCU_SEQNUM(0));
- }
-
-
- if (ah->ah_version == AR5K_AR5211) {
- ath5k_hw_reg_write(ah, tsf_up, AR5K_TSF_U32);
- ath5k_hw_reg_write(ah, tsf_lo, AR5K_TSF_L32);
- }
+ if (ah->ah_version == AR5K_AR5211) {
+ ath5k_hw_reg_write(ah, tsf_up, AR5K_TSF_U32);
+ ath5k_hw_reg_write(ah, tsf_lo, AR5K_TSF_L32);
}
}
ath5k_hw_reg_write(ah, s_led[1], AR5K_GPIOCR);
ath5k_hw_reg_write(ah, s_led[2], AR5K_GPIODO);
- /* Restore sta_id flags and preserve our mac address*/
- ath5k_hw_reg_write(ah,
- get_unaligned_le32(common->macaddr),
- AR5K_STA_ID0);
- ath5k_hw_reg_write(ah,
- staid1_flags | get_unaligned_le16(common->macaddr + 4),
- AR5K_STA_ID1);
-
-
/*
- * Configure PCU
+ * Initialize PCU
*/
-
- /* Restore bssid and bssid mask */
- ath5k_hw_set_bssid(ah);
-
- /* Set PCU config */
- ath5k_hw_set_opmode(ah, op_mode);
-
- /* Clear any pending interrupts
- * PISR/SISR Not available on 5210 */
- if (ah->ah_version != AR5K_AR5210)
- ath5k_hw_reg_write(ah, 0xffffffff, AR5K_PISR);
-
- /* Set RSSI/BRSSI thresholds
- *
- * Note: If we decide to set this value
- * dynamically, keep in mind that when AR5K_RSSI_THR
- * register is read, it might return 0x40 if we haven't
- * written anything to it. Also, BMISS RSSI threshold is zeroed.
- * So doing a save/restore procedure here isn't the right
- * choice. Instead, store it in ath5k_hw */
- ath5k_hw_reg_write(ah, (AR5K_TUNE_RSSI_THRES |
- AR5K_TUNE_BMISS_THRES <<
- AR5K_RSSI_THR_BMISS_S),
- AR5K_RSSI_THR);
-
- /* MIC QoS support */
- if (ah->ah_mac_srev >= AR5K_SREV_AR2413) {
- ath5k_hw_reg_write(ah, 0x000100aa, AR5K_MIC_QOS_CTL);
- ath5k_hw_reg_write(ah, 0x00003210, AR5K_MIC_QOS_SEL);
- }
-
- /* QoS NOACK Policy */
- if (ah->ah_version == AR5K_AR5212) {
- ath5k_hw_reg_write(ah,
- AR5K_REG_SM(2, AR5K_QOS_NOACK_2BIT_VALUES) |
- AR5K_REG_SM(5, AR5K_QOS_NOACK_BIT_OFFSET) |
- AR5K_REG_SM(0, AR5K_QOS_NOACK_BYTE_OFFSET),
- AR5K_QOS_NOACK);
- }
-
+ ath5k_hw_pcu_init(ah, op_mode, mode);
/*
- * Configure PHY
+ * Initialize PHY
*/
-
- /* Set channel on PHY */
- ret = ath5k_hw_channel(ah, channel);
- if (ret)
+ ret = ath5k_hw_phy_init(ah, channel, mode, false);
+ if (ret) {
+ ATH5K_ERR(ah->ah_sc,
+ "failed to initialize PHY (%i) !\n", ret);
return ret;
-
- /*
- * Enable the PHY and wait until completion
- * This includes BaseBand and Synthesizer
- * activation.
- */
- ath5k_hw_reg_write(ah, AR5K_PHY_ACT_ENABLE, AR5K_PHY_ACT);
-
- /*
- * On 5211+ read activation -> rx delay
- * and use it.
- *
- * TODO: Half/quarter rate support
- */
- if (ah->ah_version != AR5K_AR5210) {
- u32 delay;
- delay = ath5k_hw_reg_read(ah, AR5K_PHY_RX_DELAY) &
- AR5K_PHY_RX_DELAY_M;
- delay = (channel->hw_value & CHANNEL_CCK) ?
- ((delay << 2) / 22) : (delay / 10);
-
- udelay(100 + (2 * delay));
- } else {
- mdelay(1);
}
- /*
- * Perform ADC test to see if baseband is ready
- * Set TX hold and check ADC test register
- */
- phy_tst1 = 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, phy_tst1, AR5K_PHY_TST1);
-
- /*
- * Start automatic gain control calibration
- *
- * During AGC calibration RX path is re-routed to
- * a power 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), which doesn't
- * interrupt rx path.
- *
- * While rx path is re-routed to the power detector we also
- * start a noise floor calibration to measure the
- * card's noise floor (the noise we measure when we are not
- * transmitting or receiving anything).
- *
- * If we are in a noisy environment, AGC calibration may time
- * out and/or noise floor calibration might timeout.
- */
- AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_AGCCTL,
- AR5K_PHY_AGCCTL_CAL | AR5K_PHY_AGCCTL_NF);
-
- /* 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, "gain calibration timeout (%uMHz)\n",
- channel->center_freq);
- }
-
- /* Restore antenna mode */
- ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode);
-
- /* Restore slot time and ACK timeouts */
- if (ah->ah_coverage_class > 0)
- ath5k_hw_set_coverage_class(ah, ah->ah_coverage_class);
-
/*
* Configure QCUs/DCUs
*/
+ ret = ath5k_hw_init_queues(ah);
+ if (ret)
+ return ret;
- /* TODO: HW Compression support for data queues */
- /* TODO: Burst prefetch for data queues */
-
- /*
- * Reset queues and start beacon timers at the end of the reset routine
- * This also sets QCU mask on each DCU for 1:1 qcu to dcu mapping
- * Note: If we want we can assign multiple qcus on one dcu.
- */
- for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) {
- ret = ath5k_hw_reset_tx_queue(ah, i);
- if (ret) {
- ATH5K_ERR(ah->ah_sc,
- "failed to reset TX queue #%d\n", i);
- return ret;
- }
- }
-
-
- /*
- * Configure DMA/Interrupts
- */
/*
- * Set Rx/Tx DMA Configuration
- *
- * Set standard DMA size (128). Note that
- * a DMA size of 512 causes rx overruns and tx errors
- * on pci-e cards (tested on 5424 but since rx overruns
- * also occur on 5416/5418 with madwifi we set 128
- * for all PCI-E cards to be safe).
- *
- * XXX: need to check 5210 for this
- * TODO: Check out tx triger level, it's always 64 on dumps but I
- * guess we can tweak it and see how it goes ;-)
+ * Initialize DMA/Interrupts
*/
- if (ah->ah_version != AR5K_AR5210) {
- AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG,
- AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_128B);
- AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG,
- AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_128B);
- }
+ ath5k_hw_dma_init(ah);
- /* Pre-enable interrupts on 5211/5212*/
- if (ah->ah_version != AR5K_AR5210)
- ath5k_hw_set_imr(ah, ah->ah_imr);
/* Enable 32KHz clock function for AR5212+ chips
* Set clocks to 32KHz operation and use an
projects / mv-sheeva.git / blobdiff