ath5k_reset.c File Reference

#include <ipxe/pci.h>
#include <unistd.h>
#include "ath5k.h"
#include "reg.h"
#include "base.h"

Go to the source code of this file.

Macros
#define	_ATH5K_RESET

Functions
	FILE_LICENCE (MIT)
static int	fls (int x)
static int	ath5k_hw_write_ofdm_timings (struct ath5k_hw *ah, struct net80211_channel *channel)
	ath5k_hw_write_ofdm_timings - set OFDM timings on AR5212 More...
static void	ath5k_hw_write_rate_duration (struct ath5k_hw *ah, unsigned int mode __unused)
	ath5k_hw_write_rate_duration - fill rate code to duration table More...
static int	ath5k_hw_nic_reset (struct ath5k_hw *ah, u32 val)
int	ath5k_hw_wake (struct ath5k_hw *ah)
int	ath5k_hw_nic_wakeup (struct ath5k_hw *ah, int flags, int initial __unused)
static int	ath5k_hw_chan_has_spur_noise (struct ath5k_hw *ah, struct net80211_channel *channel)
static void	ath5k_hw_tweak_initval_settings (struct ath5k_hw *ah, struct net80211_channel *channel)
static void	ath5k_hw_commit_eeprom_settings (struct ath5k_hw *ah, struct net80211_channel *channel, u8 *ant, u8 ee_mode)
int	ath5k_hw_reset (struct ath5k_hw *ah, struct net80211_channel *channel, int change_channel)

Macro Definition Documentation

_ATH5K_RESET

#define _ATH5K_RESET

Definition at line 26 of file ath5k_reset.c.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

MIT

)

fls()

static int fls ( int  x )

static

Definition at line 40 of file ath5k_reset.c.

{
        int r = 32;

        if (!x)
                return 0;
        if (!(x & 0xffff0000u)) {
                x <<= 16;
                r -= 16;
        }
        if (!(x & 0xff000000u)) {
                x <<= 8;
                r -= 8;
        }
        if (!(x & 0xf0000000u)) {
                x <<= 4;
                r -= 4;
        }
        if (!(x & 0xc0000000u)) {
                x <<= 2;
                r -= 2;
        }
        if (!(x & 0x80000000u)) {
                x <<= 1;
                r -= 1;
        }
        return r;
}

References r.

Referenced by ath5k_hw_write_ofdm_timings().

ath5k_hw_write_ofdm_timings()

static int ath5k_hw_write_ofdm_timings ( struct ath5k_hw *  ah, struct net80211_channel *  channel  )

static

ath5k_hw_write_ofdm_timings - set OFDM timings on AR5212

@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().

Since delta slope is floating point we split it on its exponent and mantissa and provide these values on hw.

For more infos i think this patent is related http://www.freepatentsonline.com/7184495.html

Definition at line 85 of file ath5k_reset.c.

{
        /* Get exponent and mantissa and set it */
        u32 coef_scaled, coef_exp, coef_man,
                ds_coef_exp, ds_coef_man, clock;

        if (!(ah->ah_version == AR5K_AR5212) ||
            !(channel->hw_value & CHANNEL_OFDM)) {
                DBG("ath5k: attempt to set OFDM timings on non-OFDM channel\n");
                return -EFAULT;
        }

        /* 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 =  ath5k_hw_htoclock(1, channel->hw_value & CHANNEL_TURBO);

        coef_scaled = ((5 * (clock << 24)) / 2) / channel->center_freq;

        /* Get exponent
         * ALGO: coef_exp = 14 - highest set bit position */
        coef_exp = fls(coef_scaled) - 1;

        /* Doesn't make sense if it's zero*/
        if (!coef_scaled || !coef_exp)
                return -EINVAL;

        /* Note: we've shifted coef_scaled by 24 */
        coef_exp = 14 - (coef_exp - 24);


        /* Get mantissa (significant digits)
         * ALGO: coef_mant = floor(coef_scaled* 2^coef_exp+0.5) */
        coef_man = coef_scaled +
                (1 << (24 - coef_exp - 1));

        /* 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;

        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);

        return 0;
}

References ah, AR5K_AR5212, AR5K_PHY_TIMING_3, AR5K_PHY_TIMING_3_DSC_EXP, AR5K_PHY_TIMING_3_DSC_MAN, AR5K_REG_WRITE_BITS, ath5k_hw_htoclock(), channel, CHANNEL_OFDM, CHANNEL_TURBO, DBG, EFAULT, EINVAL, and fls().

Referenced by ath5k_hw_reset().

ath5k_hw_write_rate_duration()

static void ath5k_hw_write_rate_duration ( struct ath5k_hw *  ah, unsigned int mode  __unused  )

inlinestatic

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).

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.

Definition at line 156 of file ath5k_reset.c.

{
        struct ath5k_softc *sc = ah->ah_sc;
        u16 rate;
        int i;

        /* Write rate duration table */
        for (i = 0; i < sc->hwinfo->nr_rates[NET80211_BAND_2GHZ]; i++) {
                u32 reg;
                u16 tx_time;

                rate = sc->hwinfo->rates[NET80211_BAND_2GHZ][i];

                /* Set ACK timeout */
                reg = AR5K_RATE_DUR(ath5k_bitrate_to_hw_rix(rate));

                /* An ACK frame consists of 10 bytes. If you add the FCS,
                 * it's 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 = net80211_duration(sc->dev, 14, rate);

                ath5k_hw_reg_write(ah, tx_time, reg);

                if (rate != 20 && rate != 55 && rate != 110)
                        continue;

                /*
                 * We're not distinguishing short preamble here,
                 * This is true, all we'll get is a longer value here
                 * which is not necessarilly bad.
                 */
                ath5k_hw_reg_write(ah, tx_time,
                        reg + (AR5K_SET_SHORT_PREAMBLE << 2));
        }
}

References ah, AR5K_RATE_DUR, AR5K_SET_SHORT_PREAMBLE, ath5k_bitrate_to_hw_rix(), ath5k_hw_reg_write(), ath5k_softc::dev, ath5k_softc::hwinfo, NET80211_BAND_2GHZ, net80211_duration(), net80211_hw_info::nr_rates, net80211_hw_info::rates, and reg.

Referenced by ath5k_hw_reset().

ath5k_hw_nic_reset()

static int ath5k_hw_nic_reset ( struct ath5k_hw *  ah, u32  val  )

static

Definition at line 198 of file ath5k_reset.c.

{
        int ret;
        u32 mask = val ? val : ~0U;

        /* Read-and-clear RX Descriptor Pointer*/
        ath5k_hw_reg_read(ah, AR5K_RXDP);

        /*
         * Reset the device and wait until success
         */
        ath5k_hw_reg_write(ah, val, AR5K_RESET_CTL);

        /* Wait at least 128 PCI clocks */
        udelay(15);

        if (ah->ah_version == AR5K_AR5210) {
                val &= AR5K_RESET_CTL_PCU | AR5K_RESET_CTL_DMA
                        | AR5K_RESET_CTL_MAC | AR5K_RESET_CTL_PHY;
                mask &= AR5K_RESET_CTL_PCU | AR5K_RESET_CTL_DMA
                        | AR5K_RESET_CTL_MAC | AR5K_RESET_CTL_PHY;
        } else {
                val &= AR5K_RESET_CTL_PCU | AR5K_RESET_CTL_BASEBAND;
                mask &= AR5K_RESET_CTL_PCU | AR5K_RESET_CTL_BASEBAND;
        }

        ret = ath5k_hw_register_timeout(ah, AR5K_RESET_CTL, mask, val, 0);

        /*
         * 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 ((val & AR5K_RESET_CTL_PCU) == 0)
                ath5k_hw_reg_write(ah, AR5K_INIT_CFG, AR5K_CFG);

        return ret;
}

References ah, AR5K_AR5210, AR5K_CFG, AR5K_INIT_CFG, AR5K_RESET_CTL, AR5K_RESET_CTL_BASEBAND, AR5K_RESET_CTL_DMA, AR5K_RESET_CTL_MAC, AR5K_RESET_CTL_PCU, AR5K_RESET_CTL_PHY, AR5K_RXDP, ath5k_hw_reg_read(), ath5k_hw_reg_write(), udelay(), and val.

Referenced by ath5k_hw_nic_wakeup().

ath5k_hw_wake()

int ath5k_hw_wake

(

struct ath5k_hw *

ah

)

Definition at line 240 of file ath5k_reset.c.

{
        unsigned int i;
        u32 staid, data;

        staid = ath5k_hw_reg_read(ah, AR5K_STA_ID1);
        staid &= ~AR5K_STA_ID1_PWR_SV;

        /* Preserve sleep duration */
        data = ath5k_hw_reg_read(ah, AR5K_SLEEP_CTL);
        if (data & 0xffc00000)
                data = 0;
        else
                data = data & 0xfffcffff;

        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)
                        break;

                /* Wait a bit and retry */
                udelay(200);
                ath5k_hw_reg_write(ah, data, AR5K_SLEEP_CTL);
        }

        /* Fail if the chip didn't wake up */
        if (i <= 0)
                return -EIO;

        ath5k_hw_reg_write(ah, staid, AR5K_STA_ID1);

        return 0;
}

References ah, AR5K_PCICFG, AR5K_PCICFG_SPWR_DN, AR5K_SLEEP_CTL, AR5K_STA_ID1, AR5K_STA_ID1_PWR_SV, ath5k_hw_reg_read(), ath5k_hw_reg_write(), data, EIO, and udelay().

Referenced by ath5k_hw_nic_wakeup().

ath5k_hw_nic_wakeup()

int ath5k_hw_nic_wakeup	(	struct ath5k_hw *	ah,
		int	flags,
		int initial	__unused
	)

Definition at line 282 of file ath5k_reset.c.

{
        struct pci_device *pdev = ah->ah_sc->pdev;
        u32 turbo, mode, clock, bus_flags;
        int ret;

        turbo = 0;
        mode = 0;
        clock = 0;

        /* Wakeup the device */
        ret = ath5k_hw_wake(ah);
        if (ret) {
                DBG("ath5k: failed to wake up the MAC chip\n");
                return ret;
        }

        if (ah->ah_version != AR5K_AR5210) {
                /*
                 * Get channel mode flags
                 */

                if (ah->ah_radio >= AR5K_RF5112) {
                        mode = AR5K_PHY_MODE_RAD_RF5112;
                        clock = AR5K_PHY_PLL_RF5112;
                } else {
                        mode = AR5K_PHY_MODE_RAD_RF5111;        /*Zero*/
                        clock = AR5K_PHY_PLL_RF5111;            /*Zero*/
                }

                if (flags & CHANNEL_2GHZ) {
                        mode |= AR5K_PHY_MODE_FREQ_2GHZ;
                        clock |= AR5K_PHY_PLL_44MHZ;

                        if (flags & CHANNEL_CCK) {
                                mode |= AR5K_PHY_MODE_MOD_CCK;
                        } else if (flags & CHANNEL_OFDM) {
                                /* XXX Dynamic OFDM/CCK is not supported by the
                                 * AR5211 so we set MOD_OFDM for plain g (no
                                 * 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). */
                                if (ah->ah_version == AR5K_AR5211)
                                        mode |= AR5K_PHY_MODE_MOD_OFDM;
                                else
                                        mode |= AR5K_PHY_MODE_MOD_DYN;
                        } else {
                                DBG("ath5k: invalid radio modulation mode\n");
                                return -EINVAL;
                        }
                } else if (flags & CHANNEL_5GHZ) {
                        mode |= AR5K_PHY_MODE_FREQ_5GHZ;

                        if (ah->ah_radio == AR5K_RF5413)
                                clock = AR5K_PHY_PLL_40MHZ_5413;
                        else
                                clock |= AR5K_PHY_PLL_40MHZ;

                        if (flags & CHANNEL_OFDM)
                                mode |= AR5K_PHY_MODE_MOD_OFDM;
                        else {
                                DBG("ath5k: invalid radio modulation mode\n");
                                return -EINVAL;
                        }
                } else {
                        DBG("ath5k: invalid radio frequency mode\n");
                        return -EINVAL;
                }

                if (flags & CHANNEL_TURBO)
                        turbo = AR5K_PHY_TURBO_MODE | AR5K_PHY_TURBO_SHORT;
        } else { /* Reset the device */

                /* ...enable Atheros turbo mode if requested */
                if (flags & CHANNEL_TURBO)
                        ath5k_hw_reg_write(ah, AR5K_PHY_TURBO_MODE,
                                        AR5K_PHY_TURBO);
        }

        /* reseting PCI on PCI-E cards results card to hang
         * and always return 0xffff... so we ingore that flag
         * for PCI-E cards */
        if (pci_find_capability(pdev, PCI_CAP_ID_EXP))
                bus_flags = 0;
        else
                bus_flags = AR5K_RESET_CTL_PCI;

        /* Reset chipset */
        if (ah->ah_version == AR5K_AR5210) {
                ret = ath5k_hw_nic_reset(ah, AR5K_RESET_CTL_PCU |
                        AR5K_RESET_CTL_MAC | AR5K_RESET_CTL_DMA |
                        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 (ret) {
                DBG("ath5k: failed to reset the MAC chip\n");
                return -EIO;
        }

        /* ...wakeup again!*/
        ret = ath5k_hw_wake(ah);
        if (ret) {
                DBG("ath5k: failed to resume the MAC chip\n");
                return ret;
        }

        /* ...final warm reset */
        if (ath5k_hw_nic_reset(ah, 0)) {
                DBG("ath5k: failed to warm reset the MAC chip\n");
                return -EIO;
        }

        if (ah->ah_version != AR5K_AR5210) {

                /* ...update PLL if needed */
                if (ath5k_hw_reg_read(ah, AR5K_PHY_PLL) != clock) {
                        ath5k_hw_reg_write(ah, clock, AR5K_PHY_PLL);
                        udelay(300);
                }

                /* ...set the PHY operating mode */
                ath5k_hw_reg_write(ah, mode, AR5K_PHY_MODE);
                ath5k_hw_reg_write(ah, turbo, AR5K_PHY_TURBO);
        }

        return 0;
}

References ah, AR5K_AR5210, AR5K_AR5211, AR5K_PHY_MODE, AR5K_PHY_MODE_FREQ_2GHZ, AR5K_PHY_MODE_FREQ_5GHZ, AR5K_PHY_MODE_MOD_CCK, AR5K_PHY_MODE_MOD_DYN, AR5K_PHY_MODE_MOD_OFDM, AR5K_PHY_MODE_RAD_RF5111, AR5K_PHY_MODE_RAD_RF5112, AR5K_PHY_PLL, AR5K_PHY_PLL_40MHZ, AR5K_PHY_PLL_40MHZ_5413, AR5K_PHY_PLL_44MHZ, AR5K_PHY_PLL_RF5111, AR5K_PHY_PLL_RF5112, AR5K_PHY_TURBO, AR5K_PHY_TURBO_MODE, AR5K_PHY_TURBO_SHORT, AR5K_RESET_CTL_BASEBAND, AR5K_RESET_CTL_DMA, AR5K_RESET_CTL_MAC, AR5K_RESET_CTL_PCI, AR5K_RESET_CTL_PCU, AR5K_RESET_CTL_PHY, AR5K_RF5112, AR5K_RF5413, ath5k_hw_nic_reset(), ath5k_hw_reg_read(), ath5k_hw_reg_write(), ath5k_hw_wake(), CHANNEL_2GHZ, CHANNEL_5GHZ, CHANNEL_CCK, CHANNEL_OFDM, CHANNEL_TURBO, DBG, EINVAL, EIO, flags, mdelay(), PCI_CAP_ID_EXP, pci_find_capability(), and udelay().

Referenced by ath5k_hw_attach(), and ath5k_hw_reset().

ath5k_hw_chan_has_spur_noise()

static int ath5k_hw_chan_has_spur_noise ( struct ath5k_hw *  ah, struct net80211_channel *  channel  )

static

Definition at line 414 of file ath5k_reset.c.

{
        u8 refclk_freq;

        if ((ah->ah_radio == AR5K_RF5112) ||
        (ah->ah_radio == AR5K_RF5413) ||
        (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
                refclk_freq = 40;
        else
                refclk_freq = 32;

        if ((channel->center_freq % refclk_freq != 0) &&
        ((channel->center_freq % refclk_freq < 10) ||
        (channel->center_freq % refclk_freq > 22)))
                return 1;
        else
                return 0;
}

References ah, AR5K_RF5112, AR5K_RF5413, AR5K_SREV_AR2417, and channel.

Referenced by ath5k_hw_commit_eeprom_settings().

ath5k_hw_tweak_initval_settings()

static void ath5k_hw_tweak_initval_settings ( struct ath5k_hw *  ah, struct net80211_channel *  channel  )

static

Definition at line 435 of file ath5k_reset.c.

{
        if (ah->ah_version == AR5K_AR5212 &&
            ah->ah_phy_revision >= AR5K_SREV_PHY_5212A) {

                /* Setup ADC control */
                ath5k_hw_reg_write(ah,
                                (AR5K_REG_SM(2,
                                AR5K_PHY_ADC_CTL_INBUFGAIN_OFF) |
                                AR5K_REG_SM(2,
                                AR5K_PHY_ADC_CTL_INBUFGAIN_ON) |
                                AR5K_PHY_ADC_CTL_PWD_DAC_OFF |
                                AR5K_PHY_ADC_CTL_PWD_ADC_OFF),
                                AR5K_PHY_ADC_CTL);



                /* Disable barker RSSI threshold */
                AR5K_REG_DISABLE_BITS(ah, AR5K_PHY_DAG_CCK_CTL,
                                AR5K_PHY_DAG_CCK_CTL_EN_RSSI_THR);

                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_DAG_CCK_CTL,
                        AR5K_PHY_DAG_CCK_CTL_RSSI_THR, 2);

                /* Set the mute mask */
                ath5k_hw_reg_write(ah, 0x0000000f, AR5K_SEQ_MASK);
        }

        /* Clear PHY_BLUETOOTH to allow RX_CLEAR line debug */
        if (ah->ah_phy_revision >= AR5K_SREV_PHY_5212B)
                ath5k_hw_reg_write(ah, 0, AR5K_PHY_BLUETOOTH);

        /* Enable DCU double buffering */
        if (ah->ah_phy_revision > AR5K_SREV_PHY_5212B)
                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;
                if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))
                        scal = AR5K_PHY_SCAL_32MHZ_2417;
                else if (ath5k_eeprom_is_hb63(ah))
                        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))) {
                u32 fast_adc = 1;

                if (channel->center_freq == 2462 ||
                channel->center_freq == 2467)
                        fast_adc = 0;

                /* Only update if needed */
                if (ath5k_hw_reg_read(ah, AR5K_PHY_FAST_ADC) != fast_adc)
                                ath5k_hw_reg_write(ah, fast_adc,
                                                AR5K_PHY_FAST_ADC);
        }

        /* Fix for first revision of the RF5112 RF chipset */
        if (ah->ah_radio == AR5K_RF5112 &&
                        ah->ah_radio_5ghz_revision <
                        AR5K_SREV_RAD_5112A) {
                u32 data;
                ath5k_hw_reg_write(ah, AR5K_PHY_CCKTXCTL_WORLD,
                                AR5K_PHY_CCKTXCTL);
                if (channel->hw_value & CHANNEL_5GHZ)
                        data = 0xffb81020;
                else
                        data = 0xffb80d20;
                ath5k_hw_reg_write(ah, data, AR5K_PHY_FRAME_CTL);
        }

        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);
                /* Enable PCU FIFO corruption ECO */
                AR5K_REG_ENABLE_BITS(ah, AR5K_DIAG_SW_5211,
                                        AR5K_DIAG_SW_ECO_ENABLE);
        }
}

References ah, AR5K_AR5212, AR5K_DIAG_SW_5211, AR5K_DIAG_SW_ECO_ENABLE, AR5K_PHY_ADC_CTL, AR5K_PHY_ADC_CTL_INBUFGAIN_OFF, AR5K_PHY_ADC_CTL_INBUFGAIN_ON, AR5K_PHY_ADC_CTL_PWD_ADC_OFF, AR5K_PHY_ADC_CTL_PWD_DAC_OFF, AR5K_PHY_BLUETOOTH, AR5K_PHY_CCKTXCTL, AR5K_PHY_CCKTXCTL_WORLD, AR5K_PHY_DAG_CCK_CTL, AR5K_PHY_DAG_CCK_CTL_EN_RSSI_THR, AR5K_PHY_DAG_CCK_CTL_RSSI_THR, AR5K_PHY_FAST_ADC, AR5K_PHY_FRAME_CTL, AR5K_PHY_SCAL, AR5K_PHY_SCAL_32MHZ, AR5K_PHY_SCAL_32MHZ_2417, AR5K_PHY_SCAL_32MHZ_HB63, AR5K_QCUDCU_CLKGT, AR5K_REG_DISABLE_BITS, AR5K_REG_ENABLE_BITS, AR5K_REG_SM, AR5K_REG_WRITE_BITS, AR5K_RF5112, AR5K_RF5413, AR5K_SEQ_MASK, AR5K_SREV_AR2417, AR5K_SREV_AR5211, AR5K_SREV_PHY_5212A, AR5K_SREV_PHY_5212B, AR5K_SREV_RAD_5112A, AR5K_TXCFG, AR5K_TXCFG_DCU_DBL_BUF_DIS, AR5K_USEC_1, AR5K_USEC_32, AR5K_USEC_5211, AR5K_USEC_RX_LATENCY_5210, AR5K_USEC_TX_LATENCY_5211, ath5k_eeprom_is_hb63(), ath5k_hw_reg_read(), ath5k_hw_reg_write(), channel, CHANNEL_5GHZ, and data.

Referenced by ath5k_hw_reset().

ath5k_hw_commit_eeprom_settings()

static void ath5k_hw_commit_eeprom_settings ( struct ath5k_hw *  ah, struct net80211_channel *  channel, u8 *  ant, u8  ee_mode  )

static

Definition at line 537 of file ath5k_reset.c.

{
        struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
        s16 cck_ofdm_pwr_delta;

        /* Adjust power delta for channel 14 */
        if (channel->center_freq == 2484)
                cck_ofdm_pwr_delta =
                        ((ee->ee_cck_ofdm_power_delta -
                        ee->ee_scaled_cck_delta) * 2) / 10;
        else
                cck_ofdm_pwr_delta =
                        (ee->ee_cck_ofdm_power_delta * 2) / 10;

        /* Set CCK to OFDM power delta on tx power
         * adjustment register */
        if (ah->ah_phy_revision >= AR5K_SREV_PHY_5212A) {
                if (channel->hw_value == CHANNEL_G)
                        ath5k_hw_reg_write(ah,
                        AR5K_REG_SM((ee->ee_cck_ofdm_gain_delta * -1),
                                AR5K_PHY_TX_PWR_ADJ_CCK_GAIN_DELTA) |
                        AR5K_REG_SM((cck_ofdm_pwr_delta * -1),
                                AR5K_PHY_TX_PWR_ADJ_CCK_PCDAC_INDEX),
                                AR5K_PHY_TX_PWR_ADJ);
                else
                        ath5k_hw_reg_write(ah, 0, AR5K_PHY_TX_PWR_ADJ);
        } else {
                /* For older revs we scale power on sw during tx power
                 * setup */
                ah->ah_txpower.txp_cck_ofdm_pwr_delta = cck_ofdm_pwr_delta;
                ah->ah_txpower.txp_cck_ofdm_gainf_delta =
                                                ee->ee_cck_ofdm_gain_delta;
        }

        /* Set antenna idle switch table */
        AR5K_REG_WRITE_BITS(ah, AR5K_PHY_ANT_CTL,
                        AR5K_PHY_ANT_CTL_SWTABLE_IDLE,
                        (ah->ah_antenna[ee_mode][0] |
                        AR5K_PHY_ANT_CTL_TXRX_EN));

        /* Set antenna switch table */
        ath5k_hw_reg_write(ah, ah->ah_antenna[ee_mode][ant[0]],
                AR5K_PHY_ANT_SWITCH_TABLE_0);
        ath5k_hw_reg_write(ah, ah->ah_antenna[ee_mode][ant[1]],
                AR5K_PHY_ANT_SWITCH_TABLE_1);

        /* Noise floor threshold */
        ath5k_hw_reg_write(ah,
                AR5K_PHY_NF_SVAL(ee->ee_noise_floor_thr[ee_mode]),
                AR5K_PHY_NFTHRES);

        if ((channel->hw_value & CHANNEL_TURBO) &&
        (ah->ah_ee_version >= AR5K_EEPROM_VERSION_5_0)) {
                /* Switch settling time (Turbo) */
                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_SETTLING,
                                AR5K_PHY_SETTLING_SWITCH,
                                ee->ee_switch_settling_turbo[ee_mode]);

                /* Tx/Rx attenuation (Turbo) */
                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_GAIN,
                                AR5K_PHY_GAIN_TXRX_ATTEN,
                                ee->ee_atn_tx_rx_turbo[ee_mode]);

                /* ADC/PGA desired size (Turbo) */
                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_DESIRED_SIZE,
                                AR5K_PHY_DESIRED_SIZE_ADC,
                                ee->ee_adc_desired_size_turbo[ee_mode]);

                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_DESIRED_SIZE,
                                AR5K_PHY_DESIRED_SIZE_PGA,
                                ee->ee_pga_desired_size_turbo[ee_mode]);

                /* Tx/Rx margin (Turbo) */
                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_GAIN_2GHZ,
                                AR5K_PHY_GAIN_2GHZ_MARGIN_TXRX,
                                ee->ee_margin_tx_rx_turbo[ee_mode]);

        } else {
                /* Switch settling time */
                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_SETTLING,
                                AR5K_PHY_SETTLING_SWITCH,
                                ee->ee_switch_settling[ee_mode]);

                /* Tx/Rx attenuation */
                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_GAIN,
                                AR5K_PHY_GAIN_TXRX_ATTEN,
                                ee->ee_atn_tx_rx[ee_mode]);

                /* ADC/PGA desired size */
                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_DESIRED_SIZE,
                                AR5K_PHY_DESIRED_SIZE_ADC,
                                ee->ee_adc_desired_size[ee_mode]);

                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_DESIRED_SIZE,
                                AR5K_PHY_DESIRED_SIZE_PGA,
                                ee->ee_pga_desired_size[ee_mode]);

                /* Tx/Rx margin */
                if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_1)
                        AR5K_REG_WRITE_BITS(ah, AR5K_PHY_GAIN_2GHZ,
                                AR5K_PHY_GAIN_2GHZ_MARGIN_TXRX,
                                ee->ee_margin_tx_rx[ee_mode]);
        }

        /* XPA delays */
        ath5k_hw_reg_write(ah,
                (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_RF_CTL4);

        /* XLNA delay */
        AR5K_REG_WRITE_BITS(ah, AR5K_PHY_RF_CTL3,
                        AR5K_PHY_RF_CTL3_TXE2XLNA_ON,
                        ee->ee_tx_end2xlna_enable[ee_mode]);

        /* Thresh64 (ANI) */
        AR5K_REG_WRITE_BITS(ah, AR5K_PHY_NF,
                        AR5K_PHY_NF_THRESH62,
                        ee->ee_thr_62[ee_mode]);


        /* False detect backoff for channels
         * that have spur noise. Write the new
         * cyclic power RSSI threshold. */
        if (ath5k_hw_chan_has_spur_noise(ah, channel))
                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_OFDM_SELFCORR,
                                AR5K_PHY_OFDM_SELFCORR_CYPWR_THR1,
                                AR5K_INIT_CYCRSSI_THR1 +
                                ee->ee_false_detect[ee_mode]);
        else
                AR5K_REG_WRITE_BITS(ah, AR5K_PHY_OFDM_SELFCORR,
                                AR5K_PHY_OFDM_SELFCORR_CYPWR_THR1,
                                AR5K_INIT_CYCRSSI_THR1);

        /* I/Q correction
         * TODO: Per channel i/q infos ? */
        AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ,
                AR5K_PHY_IQ_CORR_ENABLE |
                (ee->ee_i_cal[ee_mode] << AR5K_PHY_IQ_CORR_Q_I_COFF_S) |
                ee->ee_q_cal[ee_mode]);

        /* Heavy clipping -disable for now */
        if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_5_1)
                ath5k_hw_reg_write(ah, 0, AR5K_PHY_HEAVY_CLIP_ENABLE);

        return;
}

References ah, AR5K_EEPROM_VERSION_4_1, AR5K_EEPROM_VERSION_5_0, AR5K_EEPROM_VERSION_5_1, AR5K_INIT_CYCRSSI_THR1, AR5K_PHY_ANT_CTL, AR5K_PHY_ANT_CTL_SWTABLE_IDLE, AR5K_PHY_ANT_CTL_TXRX_EN, AR5K_PHY_ANT_SWITCH_TABLE_0, AR5K_PHY_ANT_SWITCH_TABLE_1, AR5K_PHY_DESIRED_SIZE, AR5K_PHY_DESIRED_SIZE_ADC, AR5K_PHY_DESIRED_SIZE_PGA, AR5K_PHY_GAIN, AR5K_PHY_GAIN_2GHZ, AR5K_PHY_GAIN_2GHZ_MARGIN_TXRX, AR5K_PHY_GAIN_TXRX_ATTEN, AR5K_PHY_HEAVY_CLIP_ENABLE, AR5K_PHY_IQ, AR5K_PHY_IQ_CORR_ENABLE, AR5K_PHY_IQ_CORR_Q_I_COFF_S, AR5K_PHY_NF, AR5K_PHY_NF_SVAL, AR5K_PHY_NF_THRESH62, AR5K_PHY_NFTHRES, AR5K_PHY_OFDM_SELFCORR, AR5K_PHY_OFDM_SELFCORR_CYPWR_THR1, AR5K_PHY_RF_CTL3, AR5K_PHY_RF_CTL3_TXE2XLNA_ON, AR5K_PHY_RF_CTL4, AR5K_PHY_SETTLING, AR5K_PHY_SETTLING_SWITCH, AR5K_PHY_TX_PWR_ADJ, AR5K_PHY_TX_PWR_ADJ_CCK_GAIN_DELTA, AR5K_PHY_TX_PWR_ADJ_CCK_PCDAC_INDEX, AR5K_REG_ENABLE_BITS, AR5K_REG_SM, AR5K_REG_WRITE_BITS, AR5K_SREV_PHY_5212A, ath5k_hw_chan_has_spur_noise(), ath5k_hw_reg_write(), channel, CHANNEL_G, CHANNEL_TURBO, ath5k_eeprom_info::ee_adc_desired_size, ath5k_eeprom_info::ee_adc_desired_size_turbo, ath5k_eeprom_info::ee_atn_tx_rx, ath5k_eeprom_info::ee_atn_tx_rx_turbo, ath5k_eeprom_info::ee_cck_ofdm_gain_delta, ath5k_eeprom_info::ee_cck_ofdm_power_delta, ath5k_eeprom_info::ee_false_detect, ath5k_eeprom_info::ee_i_cal, ath5k_eeprom_info::ee_margin_tx_rx, ath5k_eeprom_info::ee_margin_tx_rx_turbo, ath5k_eeprom_info::ee_noise_floor_thr, ath5k_eeprom_info::ee_pga_desired_size, ath5k_eeprom_info::ee_pga_desired_size_turbo, ath5k_eeprom_info::ee_q_cal, ath5k_eeprom_info::ee_scaled_cck_delta, ath5k_eeprom_info::ee_switch_settling, ath5k_eeprom_info::ee_switch_settling_turbo, ath5k_eeprom_info::ee_thr_62, ath5k_eeprom_info::ee_tx_end2xlna_enable, ath5k_eeprom_info::ee_tx_end2xpa_disable, and ath5k_eeprom_info::ee_tx_frm2xpa_enable.

Referenced by ath5k_hw_reset().

ath5k_hw_reset()

int ath5k_hw_reset	(	struct ath5k_hw *	ah,
		struct net80211_channel *	channel,
		int	change_channel
	)

Definition at line 690 of file ath5k_reset.c.

{
        u32 s_seq[10], s_ant, s_led[3], staid1_flags;
        u32 phy_tst1;
        u8 mode, freq, ee_mode, ant[2];
        int i, ret;

        s_ant = 0;
        ee_mode = 0;
        staid1_flags = 0;
        freq = 0;
        mode = 0;

        /*
         * Save some registers before a reset
         */
        /*DCU/Antenna selection not available on 5210*/
        if (ah->ah_version != AR5K_AR5210) {

                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) {
                                DBG("ath5k: TurboG not available on 5211\n");
                                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) {
                                DBG("ath5k: XR mode not available on 5211\n");
                                return -EINVAL;
                        }
                        mode = AR5K_MODE_XR;
                        freq = AR5K_INI_RFGAIN_5GHZ;
                        ee_mode = AR5K_EEPROM_MODE_11A;
                        break;
                default:
                        DBG("ath5k: invalid channel (%d MHz)\n",
                            channel->center_freq);
                        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));

                        } else {
                                s_seq[0] = ath5k_hw_reg_read(ah,
                                                AR5K_QUEUE_DCU_SEQNUM(0));
                        }
                }

                /* Save default antenna */
                s_ant = ath5k_hw_reg_read(ah, AR5K_DEFAULT_ANTENNA);

                if (ah->ah_version == AR5K_AR5212) {
                        /* 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);
                }
        }

        /*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);

        /* Wakeup the device */
        ret = ath5k_hw_nic_wakeup(ah, channel->hw_value, 0);
        if (ret)
                return ret;

        /* PHY access enable */
        if (ah->ah_mac_srev >= AR5K_SREV_AR5211)
                ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_5GHZ, AR5K_PHY(0));
        else
                ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_5GHZ | 0x40,
                                                        AR5K_PHY(0));

        /* Write initial settings */
        ret = ath5k_hw_write_initvals(ah, mode, change_channel);
        if (ret)
                return ret;

        /*
         * 5211/5212 Specific
         */
        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 (FIXME)
                 */
                ret = ath5k_hw_txpower(ah, channel, ee_mode,
                                        AR5K_TUNE_DEFAULT_TXPOWER);
                if (ret)
                        return ret;

                /* Write rate duration table only on AR5212 */
                if (ah->ah_version == AR5K_AR5212)
                        ath5k_hw_write_rate_duration(ah, mode);

                /*
                 * 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;
                }

                /*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);
                }

                /*
                 * In case a fixed antenna was set as default
                 * write the same settings on both AR5K_PHY_ANT_SWITCH_TABLE
                 * registers.
                 */
                if (s_ant != 0) {
                        if (s_ant == AR5K_ANT_FIXED_A) /* 1 - Main */
                                ant[0] = ant[1] = AR5K_ANT_FIXED_A;
                        else    /* 2 - Aux */
                                ant[0] = ant[1] = AR5K_ANT_FIXED_B;
                } else {
                        ant[0] = AR5K_ANT_FIXED_A;
                        ant[1] = AR5K_ANT_FIXED_B;
                }

                /* Commit values from EEPROM */
                ath5k_hw_commit_eeprom_settings(ah, channel, ant, 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*/
        if (ah->ah_version != AR5K_AR5210) {

                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));
                        }
                }

                ath5k_hw_reg_write(ah, s_ant, AR5K_DEFAULT_ANTENNA);
        }

        /* Ledstate */
        AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, s_led[0]);

        /* Gpio settings */
        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, AR5K_LOW_ID(ah->ah_sta_id),
                                                AR5K_STA_ID0);
        ath5k_hw_reg_write(ah, staid1_flags | AR5K_HIGH_ID(ah->ah_sta_id),
                                                AR5K_STA_ID1);


        /*
         * Configure PCU
         */

        /* Restore bssid and bssid mask */
        /* XXX: add ah->aid once mac80211 gives this to us */
        ath5k_hw_set_associd(ah, ah->ah_bssid, 0);

        /* Set PCU config */
        ath5k_hw_set_opmode(ah);

        /* 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
         * dynamicaly, have in mind that when AR5K_RSSI_THR
         * register is read it might return 0x40 if we haven't
         * wrote anything to it plus BMISS RSSI threshold is zeroed.
         * So doing a save/restore procedure here isn't the right
         * choice. Instead store it on 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);
        }


        /*
         * Configure PHY
         */

        /* Set channel on PHY */
        ret = ath5k_hw_channel(ah, channel);
        if (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), that 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
         * transmiting 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);

        /* At the same time start I/Q calibration for QAM constellation
         * -no need for CCK- */
        ah->ah_calibration = 0;
        if (!(mode == AR5K_MODE_11B)) {
                ah->ah_calibration = 1;
                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, 0)) {
                DBG("ath5k: gain calibration timeout (%d MHz)\n",
                    channel->center_freq);
        }

        /*
         * 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. Also if AGC or NF cal.
         * times out, reset doesn't fail on binary HAL. I believe
         * that's wrong because since rx path is routed to a detector,
         * if cal. doesn't finish we won't have RX. Sam's HAL for AR5210/5211
         * enables noise floor calibration after offset calibration and if noise
         * floor calibration fails, reset fails. I believe that's
         * a better approach, we just need to find a polling interval
         * that suits best, even if reset continues we need to make
         * sure that rx path is ready.
         */
        ath5k_hw_noise_floor_calibration(ah, channel->center_freq);


        /*
         * Configure QCUs/DCUs
         */

        /* 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.
         */
        ret = ath5k_hw_reset_tx_queue(ah);
        if (ret) {
                DBG("ath5k: failed to reset TX queue\n");
                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 ;-)
         */
        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);
        }

        /* Pre-enable interrupts on 5211/5212*/
        if (ah->ah_version != AR5K_AR5210)
                ath5k_hw_set_imr(ah, ah->ah_imr);

        /*
         * Setup RFKill interrupt if rfkill flag is set on eeprom.
         * TODO: Use gpio pin and polarity infos from eeprom
         * TODO: Handle this in ath5k_intr because it'll result
         *       a nasty interrupt storm.
         */
#if 0
        if (AR5K_EEPROM_HDR_RFKILL(ah->ah_capabilities.cap_eeprom.ee_header)) {
                ath5k_hw_set_gpio_input(ah, 0);
                ah->ah_gpio[0] = ath5k_hw_get_gpio(ah, 0);
                if (ah->ah_gpio[0] == 0)
                        ath5k_hw_set_gpio_intr(ah, 0, 1);
                else
                        ath5k_hw_set_gpio_intr(ah, 0, 0);
        }
#endif

        /*
         * Disable beacons and reset the register
         */
        AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE |
                        AR5K_BEACON_RESET_TSF);

        return 0;
}

References ah, AR5K_ANT_FIXED_A, AR5K_ANT_FIXED_B, AR5K_AR5210, AR5K_AR5211, AR5K_AR5212, AR5K_BEACON, AR5K_BEACON_ENABLE, AR5K_BEACON_RESET_TSF, AR5K_DEFAULT_ANTENNA, AR5K_DMASIZE_128B, AR5K_EEPROM_HDR_RFKILL, AR5K_EEPROM_MODE_11A, AR5K_EEPROM_MODE_11B, AR5K_EEPROM_MODE_11G, AR5K_GPIOCR, AR5K_GPIODO, AR5K_HIGH_ID, AR5K_INI_RFGAIN_2GHZ, AR5K_INI_RFGAIN_5GHZ, AR5K_LOW_ID, AR5K_MIC_QOS_CTL, AR5K_MIC_QOS_SEL, AR5K_MODE_11A, AR5K_MODE_11A_TURBO, AR5K_MODE_11B, AR5K_MODE_11G, AR5K_MODE_11G_TURBO, AR5K_MODE_XR, AR5K_PCICFG, AR5K_PCICFG_LEDSTATE, AR5K_PHY, AR5K_PHY_ACT, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT_ENABLE, AR5K_PHY_ADC_TEST, AR5K_PHY_AGCCTL, AR5K_PHY_AGCCTL_CAL, AR5K_PHY_IQ, AR5K_PHY_IQ_CAL_NUM_LOG_MAX, AR5K_PHY_IQ_RUN, AR5K_PHY_RX_DELAY, AR5K_PHY_RX_DELAY_M, AR5K_PHY_SHIFT_5GHZ, AR5K_PHY_TST1, AR5K_PHY_TST1_TXHOLD, AR5K_PISR, AR5K_QOS_NOACK, AR5K_QOS_NOACK_2BIT_VALUES, AR5K_QOS_NOACK_BIT_OFFSET, AR5K_QOS_NOACK_BYTE_OFFSET, AR5K_QUEUE_DCU_SEQNUM, AR5K_REG_DISABLE_BITS, AR5K_REG_ENABLE_BITS, AR5K_REG_SM, AR5K_REG_WRITE_BITS, AR5K_RF5111, AR5K_RSSI_THR, AR5K_RSSI_THR_BMISS_S, AR5K_RXCFG, AR5K_RXCFG_SDMAMW, AR5K_SREV_AR2413, AR5K_SREV_AR5211, AR5K_STA_ID0, AR5K_STA_ID1, AR5K_STA_ID1_ACKCTS_6MB, AR5K_STA_ID1_BASE_RATE_11B, AR5K_STA_ID1_DEFAULT_ANTENNA, AR5K_STA_ID1_DESC_ANTENNA, AR5K_STA_ID1_RTS_DEF_ANTENNA, AR5K_STA_ID1_SELFGEN_DEF_ANT, AR5K_TUNE_BMISS_THRES, AR5K_TUNE_DEFAULT_TXPOWER, AR5K_TUNE_RSSI_THRES, AR5K_TXCFG, AR5K_TXCFG_B_MODE, AR5K_TXCFG_SDMAMR, ath5k_hw_channel(), ath5k_hw_commit_eeprom_settings(), ath5k_hw_gainf_calibrate(), ath5k_hw_get_gpio(), ath5k_hw_nic_wakeup(), ath5k_hw_noise_floor_calibration(), ath5k_hw_reg_read(), ath5k_hw_reg_write(), ath5k_hw_reset_tx_queue(), ath5k_hw_rfgain_init(), ath5k_hw_rfregs_init(), ath5k_hw_set_associd(), ath5k_hw_set_gpio_input(), ath5k_hw_set_gpio_intr(), ath5k_hw_set_imr(), ath5k_hw_set_opmode(), ath5k_hw_tweak_initval_settings(), ath5k_hw_txpower(), ath5k_hw_write_initvals(), ath5k_hw_write_ofdm_timings(), ath5k_hw_write_rate_duration(), channel, CHANNEL_A, CHANNEL_B, CHANNEL_CCK, CHANNEL_G, CHANNEL_MODES, CHANNEL_OFDM, CHANNEL_T, CHANNEL_TG, CHANNEL_XR, DBG, delay, EINVAL, mdelay(), NULL, and udelay().

Referenced by ath5k_reset().