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bcm43xx_phy.c

/*

  Broadcom BCM43xx wireless driver

  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
                     Stefano Brivio <st3@riseup.net>
                     Michael Buesch <mbuesch@freenet.de>
                     Danny van Dyk <kugelfang@gentoo.org>
                     Andreas Jaggi <andreas.jaggi@waterwave.ch>

  Some parts of the code in this file are derived from the ipw2200
  driver  Copyright(c) 2003 - 2004 Intel Corporation.

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; see the file COPYING.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  Boston, MA 02110-1301, USA.

*/

#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/types.h>

#include "bcm43xx.h"
#include "bcm43xx_phy.h"
#include "bcm43xx_main.h"
#include "bcm43xx_radio.h"
#include "bcm43xx_ilt.h"
#include "bcm43xx_power.h"


static const s8 bcm43xx_tssi2dbm_b_table[] = {
      0x4D, 0x4C, 0x4B, 0x4A,
      0x4A, 0x49, 0x48, 0x47,
      0x47, 0x46, 0x45, 0x45,
      0x44, 0x43, 0x42, 0x42,
      0x41, 0x40, 0x3F, 0x3E,
      0x3D, 0x3C, 0x3B, 0x3A,
      0x39, 0x38, 0x37, 0x36,
      0x35, 0x34, 0x32, 0x31,
      0x30, 0x2F, 0x2D, 0x2C,
      0x2B, 0x29, 0x28, 0x26,
      0x25, 0x23, 0x21, 0x1F,
      0x1D, 0x1A, 0x17, 0x14,
      0x10, 0x0C, 0x06, 0x00,
        -7,   -7,   -7,   -7,
        -7,   -7,   -7,   -7,
        -7,   -7,   -7,   -7,
};

static const s8 bcm43xx_tssi2dbm_g_table[] = {
       77,  77,  77,  76,
       76,  76,  75,  75,
       74,  74,  73,  73,
       73,  72,  72,  71,
       71,  70,  70,  69,
       68,  68,  67,  67,
       66,  65,  65,  64,
       63,  63,  62,  61,
       60,  59,  58,  57,
       56,  55,  54,  53,
       52,  50,  49,  47,
       45,  43,  40,  37,
       33,  28,  22,  14,
        5,  -7, -20, -20,
      -20, -20, -20, -20,
      -20, -20, -20, -20,
};

static void bcm43xx_phy_initg(struct bcm43xx_private *bcm);


static inline
void bcm43xx_voluntary_preempt(void)
{
      assert(!in_atomic() && !in_irq() &&
             !in_interrupt() && !irqs_disabled());
#ifndef CONFIG_PREEMPT
      cond_resched();
#endif /* CONFIG_PREEMPT */
}

void bcm43xx_raw_phy_lock(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);

      assert(irqs_disabled());
      if (bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD) == 0x00000000) {
            phy->is_locked = 0;
            return;
      }
      if (bcm->current_core->rev < 3) {
            bcm43xx_mac_suspend(bcm);
            spin_lock(&phy->lock);
      } else {
            if (bcm->ieee->iw_mode != IW_MODE_MASTER)
                  bcm43xx_power_saving_ctl_bits(bcm, -1, 1);
      }
      phy->is_locked = 1;
}

void bcm43xx_raw_phy_unlock(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);

      assert(irqs_disabled());
      if (bcm->current_core->rev < 3) {
            if (phy->is_locked) {
                  spin_unlock(&phy->lock);
                  bcm43xx_mac_enable(bcm);
            }
      } else {
            if (bcm->ieee->iw_mode != IW_MODE_MASTER)
                  bcm43xx_power_saving_ctl_bits(bcm, -1, -1);
      }
      phy->is_locked = 0;
}

u16 bcm43xx_phy_read(struct bcm43xx_private *bcm, u16 offset)
{
      bcm43xx_write16(bcm, BCM43xx_MMIO_PHY_CONTROL, offset);
      return bcm43xx_read16(bcm, BCM43xx_MMIO_PHY_DATA);
}

void bcm43xx_phy_write(struct bcm43xx_private *bcm, u16 offset, u16 val)
{
      bcm43xx_write16(bcm, BCM43xx_MMIO_PHY_CONTROL, offset);
      mmiowb();
      bcm43xx_write16(bcm, BCM43xx_MMIO_PHY_DATA, val);
}

void bcm43xx_phy_calibrate(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);

      bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD); /* Dummy read. */
      if (phy->calibrated)
            return;
      if (phy->type == BCM43xx_PHYTYPE_G && phy->rev == 1) {
            bcm43xx_wireless_core_reset(bcm, 0);
            bcm43xx_phy_initg(bcm);
            bcm43xx_wireless_core_reset(bcm, 1);
      }
      phy->calibrated = 1;
}

/* Connect the PHY 
 * http://bcm-specs.sipsolutions.net/SetPHY
 */
int bcm43xx_phy_connect(struct bcm43xx_private *bcm, int connect)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      u32 flags;

      if (bcm->current_core->rev < 5)
            goto out;

      flags = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATEHIGH);
      if (connect) {
            if (!(flags & BCM43xx_SBTMSTATEHIGH_G_PHY_AVAIL))
                  return -ENODEV;
            flags = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
            flags |= BCM43xx_SBTMSTATELOW_G_MODE_ENABLE;
            bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, flags);
      } else {
            if (!(flags & BCM43xx_SBTMSTATEHIGH_A_PHY_AVAIL))
                  return -ENODEV;
            flags = bcm43xx_read32(bcm, BCM43xx_CIR_SBTMSTATELOW);
            flags &= ~BCM43xx_SBTMSTATELOW_G_MODE_ENABLE;
            bcm43xx_write32(bcm, BCM43xx_CIR_SBTMSTATELOW, flags);
      }
out:
      phy->connected = connect;
      if (connect)
            dprintk(KERN_INFO PFX "PHY connected\n");
      else
            dprintk(KERN_INFO PFX "PHY disconnected\n");

      return 0;
}

/* intialize B PHY power control
 * as described in http://bcm-specs.sipsolutions.net/InitPowerControl
 */
static void bcm43xx_phy_init_pctl(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      u16 saved_batt = 0, saved_ratt = 0, saved_txctl1 = 0;
      int must_reset_txpower = 0;

      assert(phy->type != BCM43xx_PHYTYPE_A);
      if ((bcm->board_vendor == PCI_VENDOR_ID_BROADCOM) &&
          (bcm->board_type == 0x0416))
            return;

      bcm43xx_phy_write(bcm, 0x0028, 0x8018);
      bcm43xx_write16(bcm, 0x03E6, bcm43xx_read16(bcm, 0x03E6) & 0xFFDF);

      if (phy->type == BCM43xx_PHYTYPE_G) {
            if (!phy->connected)
                  return;
            bcm43xx_phy_write(bcm, 0x047A, 0xC111);
      }
      if (phy->savedpctlreg != 0xFFFF)
            return;

      if (phy->type == BCM43xx_PHYTYPE_B &&
          phy->rev >= 2 &&
          radio->version == 0x2050) {
            bcm43xx_radio_write16(bcm, 0x0076,
                              bcm43xx_radio_read16(bcm, 0x0076) | 0x0084);
      } else {
            saved_batt = radio->baseband_atten;
            saved_ratt = radio->radio_atten;
            saved_txctl1 = radio->txctl1;
            if ((radio->revision >= 6) && (radio->revision <= 8)
                && /*FIXME: incomplete specs for 5 < revision < 9 */ 0)
                  bcm43xx_radio_set_txpower_bg(bcm, 0xB, 0x1F, 0);
            else
                  bcm43xx_radio_set_txpower_bg(bcm, 0xB, 9, 0);
            must_reset_txpower = 1;
      }
      bcm43xx_dummy_transmission(bcm);

      phy->savedpctlreg = bcm43xx_phy_read(bcm, BCM43xx_PHY_G_PCTL);

      if (must_reset_txpower)
            bcm43xx_radio_set_txpower_bg(bcm, saved_batt, saved_ratt, saved_txctl1);
      else
            bcm43xx_radio_write16(bcm, 0x0076, bcm43xx_radio_read16(bcm, 0x0076) & 0xFF7B);
      bcm43xx_radio_clear_tssi(bcm);
}

static void bcm43xx_phy_agcsetup(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      u16 offset = 0x0000;

      if (phy->rev == 1)
            offset = 0x4C00;

      bcm43xx_ilt_write(bcm, offset, 0x00FE);
      bcm43xx_ilt_write(bcm, offset + 1, 0x000D);
      bcm43xx_ilt_write(bcm, offset + 2, 0x0013);
      bcm43xx_ilt_write(bcm, offset + 3, 0x0019);

      if (phy->rev == 1) {
            bcm43xx_ilt_write(bcm, 0x1800, 0x2710);
            bcm43xx_ilt_write(bcm, 0x1801, 0x9B83);
            bcm43xx_ilt_write(bcm, 0x1802, 0x9B83);
            bcm43xx_ilt_write(bcm, 0x1803, 0x0F8D);
            bcm43xx_phy_write(bcm, 0x0455, 0x0004);
      }

      bcm43xx_phy_write(bcm, 0x04A5, (bcm43xx_phy_read(bcm, 0x04A5) & 0x00FF) | 0x5700);
      bcm43xx_phy_write(bcm, 0x041A, (bcm43xx_phy_read(bcm, 0x041A) & 0xFF80) | 0x000F);
      bcm43xx_phy_write(bcm, 0x041A, (bcm43xx_phy_read(bcm, 0x041A) & 0xC07F) | 0x2B80);
      bcm43xx_phy_write(bcm, 0x048C, (bcm43xx_phy_read(bcm, 0x048C) & 0xF0FF) | 0x0300);

      bcm43xx_radio_write16(bcm, 0x007A, bcm43xx_radio_read16(bcm, 0x007A) | 0x0008);

      bcm43xx_phy_write(bcm, 0x04A0, (bcm43xx_phy_read(bcm, 0x04A0) & 0xFFF0) | 0x0008);
      bcm43xx_phy_write(bcm, 0x04A1, (bcm43xx_phy_read(bcm, 0x04A1) & 0xF0FF) | 0x0600);
      bcm43xx_phy_write(bcm, 0x04A2, (bcm43xx_phy_read(bcm, 0x04A2) & 0xF0FF) | 0x0700);
      bcm43xx_phy_write(bcm, 0x04A0, (bcm43xx_phy_read(bcm, 0x04A0) & 0xF0FF) | 0x0100);

      if (phy->rev == 1)
            bcm43xx_phy_write(bcm, 0x04A2, (bcm43xx_phy_read(bcm, 0x04A2) & 0xFFF0) | 0x0007);

      bcm43xx_phy_write(bcm, 0x0488, (bcm43xx_phy_read(bcm, 0x0488) & 0xFF00) | 0x001C);
      bcm43xx_phy_write(bcm, 0x0488, (bcm43xx_phy_read(bcm, 0x0488) & 0xC0FF) | 0x0200);
      bcm43xx_phy_write(bcm, 0x0496, (bcm43xx_phy_read(bcm, 0x0496) & 0xFF00) | 0x001C);
      bcm43xx_phy_write(bcm, 0x0489, (bcm43xx_phy_read(bcm, 0x0489) & 0xFF00) | 0x0020);
      bcm43xx_phy_write(bcm, 0x0489, (bcm43xx_phy_read(bcm, 0x0489) & 0xC0FF) | 0x0200);
      bcm43xx_phy_write(bcm, 0x0482, (bcm43xx_phy_read(bcm, 0x0482) & 0xFF00) | 0x002E);
      bcm43xx_phy_write(bcm, 0x0496, (bcm43xx_phy_read(bcm, 0x0496) & 0x00FF) | 0x1A00);
      bcm43xx_phy_write(bcm, 0x0481, (bcm43xx_phy_read(bcm, 0x0481) & 0xFF00) | 0x0028);
      bcm43xx_phy_write(bcm, 0x0481, (bcm43xx_phy_read(bcm, 0x0481) & 0x00FF) | 0x2C00);

      if (phy->rev == 1) {
            bcm43xx_phy_write(bcm, 0x0430, 0x092B);
            bcm43xx_phy_write(bcm, 0x041B, (bcm43xx_phy_read(bcm, 0x041B) & 0xFFE1) | 0x0002);
      } else {
            bcm43xx_phy_write(bcm, 0x041B, bcm43xx_phy_read(bcm, 0x041B) & 0xFFE1);
            bcm43xx_phy_write(bcm, 0x041F, 0x287A);
            bcm43xx_phy_write(bcm, 0x0420, (bcm43xx_phy_read(bcm, 0x0420) & 0xFFF0) | 0x0004);
      }

      if (phy->rev > 2) {
            bcm43xx_phy_write(bcm, 0x0422, 0x287A);
            bcm43xx_phy_write(bcm, 0x0420, (bcm43xx_phy_read(bcm, 0x0420)
                          & 0x0FFF) | 0x3000);
      }
            
      bcm43xx_phy_write(bcm, 0x04A8, (bcm43xx_phy_read(bcm, 0x04A8) & 0x8080)
                              | 0x7874);
      bcm43xx_phy_write(bcm, 0x048E, 0x1C00);

      if (phy->rev == 1) {
            bcm43xx_phy_write(bcm, 0x04AB, (bcm43xx_phy_read(bcm, 0x04AB)
                          & 0xF0FF) | 0x0600);
            bcm43xx_phy_write(bcm, 0x048B, 0x005E);
            bcm43xx_phy_write(bcm, 0x048C, (bcm43xx_phy_read(bcm, 0x048C)
                          & 0xFF00) | 0x001E);
            bcm43xx_phy_write(bcm, 0x048D, 0x0002);
      }

      bcm43xx_ilt_write(bcm, offset + 0x0800, 0);
      bcm43xx_ilt_write(bcm, offset + 0x0801, 7);
      bcm43xx_ilt_write(bcm, offset + 0x0802, 16);
      bcm43xx_ilt_write(bcm, offset + 0x0803, 28);

      if (phy->rev >= 6) {
            bcm43xx_phy_write(bcm, 0x0426, (bcm43xx_phy_read(bcm, 0x0426)
                          & 0xFFFC));
            bcm43xx_phy_write(bcm, 0x0426, (bcm43xx_phy_read(bcm, 0x0426)
                          & 0xEFFF));
      }
}

static void bcm43xx_phy_setupg(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      u16 i;

      assert(phy->type == BCM43xx_PHYTYPE_G);
      if (phy->rev == 1) {
            bcm43xx_phy_write(bcm, 0x0406, 0x4F19);
            bcm43xx_phy_write(bcm, BCM43xx_PHY_G_CRS,
                          (bcm43xx_phy_read(bcm, BCM43xx_PHY_G_CRS)
                          & 0xFC3F) | 0x0340);
            bcm43xx_phy_write(bcm, 0x042C, 0x005A);
            bcm43xx_phy_write(bcm, 0x0427, 0x001A);

            for (i = 0; i < BCM43xx_ILT_FINEFREQG_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x5800 + i, bcm43xx_ilt_finefreqg[i]);
            for (i = 0; i < BCM43xx_ILT_NOISEG1_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x1800 + i, bcm43xx_ilt_noiseg1[i]);
            for (i = 0; i < BCM43xx_ILT_ROTOR_SIZE; i++)
                  bcm43xx_ilt_write32(bcm, 0x2000 + i, bcm43xx_ilt_rotor[i]);
      } else {
            /* nrssi values are signed 6-bit values. Not sure why we write 0x7654 here... */
            bcm43xx_nrssi_hw_write(bcm, 0xBA98, (s16)0x7654);

            if (phy->rev == 2) {
                  bcm43xx_phy_write(bcm, 0x04C0, 0x1861);
                  bcm43xx_phy_write(bcm, 0x04C1, 0x0271);
            } else if (phy->rev > 2) {
                  bcm43xx_phy_write(bcm, 0x04C0, 0x0098);
                  bcm43xx_phy_write(bcm, 0x04C1, 0x0070);
                  bcm43xx_phy_write(bcm, 0x04C9, 0x0080);
            }
            bcm43xx_phy_write(bcm, 0x042B, bcm43xx_phy_read(bcm, 0x042B) | 0x800);

            for (i = 0; i < 64; i++)
                  bcm43xx_ilt_write(bcm, 0x4000 + i, i);
            for (i = 0; i < BCM43xx_ILT_NOISEG2_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x1800 + i, bcm43xx_ilt_noiseg2[i]);
      }
      
      if (phy->rev <= 2)
            for (i = 0; i < BCM43xx_ILT_NOISESCALEG_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x1400 + i, bcm43xx_ilt_noisescaleg1[i]);
      else if ((phy->rev >= 7) && (bcm43xx_phy_read(bcm, 0x0449) & 0x0200))
            for (i = 0; i < BCM43xx_ILT_NOISESCALEG_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x1400 + i, bcm43xx_ilt_noisescaleg3[i]);
      else
            for (i = 0; i < BCM43xx_ILT_NOISESCALEG_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x1400 + i, bcm43xx_ilt_noisescaleg2[i]);
      
      if (phy->rev == 2)
            for (i = 0; i < BCM43xx_ILT_SIGMASQR_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x5000 + i, bcm43xx_ilt_sigmasqr1[i]);
      else if ((phy->rev > 2) && (phy->rev <= 8))
            for (i = 0; i < BCM43xx_ILT_SIGMASQR_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x5000 + i, bcm43xx_ilt_sigmasqr2[i]);
      
      if (phy->rev == 1) {
            for (i = 0; i < BCM43xx_ILT_RETARD_SIZE; i++)
                  bcm43xx_ilt_write32(bcm, 0x2400 + i, bcm43xx_ilt_retard[i]);
            for (i = 0; i < 4; i++) {
                  bcm43xx_ilt_write(bcm, 0x5404 + i, 0x0020);
                  bcm43xx_ilt_write(bcm, 0x5408 + i, 0x0020);
                  bcm43xx_ilt_write(bcm, 0x540C + i, 0x0020);
                  bcm43xx_ilt_write(bcm, 0x5410 + i, 0x0020);
            }
            bcm43xx_phy_agcsetup(bcm);

            if ((bcm->board_vendor == PCI_VENDOR_ID_BROADCOM) &&
                (bcm->board_type == 0x0416) &&
                (bcm->board_revision == 0x0017))
                  return;

            bcm43xx_ilt_write(bcm, 0x5001, 0x0002);
            bcm43xx_ilt_write(bcm, 0x5002, 0x0001);
      } else {
            for (i = 0; i <= 0x2F; i++)
                  bcm43xx_ilt_write(bcm, 0x1000 + i, 0x0820);
            bcm43xx_phy_agcsetup(bcm);
            bcm43xx_phy_read(bcm, 0x0400); /* dummy read */
            bcm43xx_phy_write(bcm, 0x0403, 0x1000);
            bcm43xx_ilt_write(bcm, 0x3C02, 0x000F);
            bcm43xx_ilt_write(bcm, 0x3C03, 0x0014);

            if ((bcm->board_vendor == PCI_VENDOR_ID_BROADCOM) &&
                (bcm->board_type == 0x0416) &&
                (bcm->board_revision == 0x0017))
                  return;

            bcm43xx_ilt_write(bcm, 0x0401, 0x0002);
            bcm43xx_ilt_write(bcm, 0x0402, 0x0001);
      }
}

/* Initialize the noisescaletable for APHY */
static void bcm43xx_phy_init_noisescaletbl(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      int i;

      bcm43xx_phy_write(bcm, BCM43xx_PHY_ILT_A_CTRL, 0x1400);
      for (i = 0; i < 12; i++) {
            if (phy->rev == 2)
                  bcm43xx_phy_write(bcm, BCM43xx_PHY_ILT_A_DATA1, 0x6767);
            else
                  bcm43xx_phy_write(bcm, BCM43xx_PHY_ILT_A_DATA1, 0x2323);
      }
      if (phy->rev == 2)
            bcm43xx_phy_write(bcm, BCM43xx_PHY_ILT_A_DATA1, 0x6700);
      else
            bcm43xx_phy_write(bcm, BCM43xx_PHY_ILT_A_DATA1, 0x2300);
      for (i = 0; i < 11; i++) {
            if (phy->rev == 2)
                  bcm43xx_phy_write(bcm, BCM43xx_PHY_ILT_A_DATA1, 0x6767);
            else
                  bcm43xx_phy_write(bcm, BCM43xx_PHY_ILT_A_DATA1, 0x2323);
      }
      if (phy->rev == 2)
            bcm43xx_phy_write(bcm, BCM43xx_PHY_ILT_A_DATA1, 0x0067);
      else
            bcm43xx_phy_write(bcm, BCM43xx_PHY_ILT_A_DATA1, 0x0023);
}

static void bcm43xx_phy_setupa(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      u16 i;

      assert(phy->type == BCM43xx_PHYTYPE_A);
      switch (phy->rev) {
      case 2:
            bcm43xx_phy_write(bcm, 0x008E, 0x3800);
            bcm43xx_phy_write(bcm, 0x0035, 0x03FF);
            bcm43xx_phy_write(bcm, 0x0036, 0x0400);

            bcm43xx_ilt_write(bcm, 0x3807, 0x0051);

            bcm43xx_phy_write(bcm, 0x001C, 0x0FF9);
            bcm43xx_phy_write(bcm, 0x0020, bcm43xx_phy_read(bcm, 0x0020) & 0xFF0F);
            bcm43xx_ilt_write(bcm, 0x3C0C, 0x07BF);
            bcm43xx_radio_write16(bcm, 0x0002, 0x07BF);

            bcm43xx_phy_write(bcm, 0x0024, 0x4680);
            bcm43xx_phy_write(bcm, 0x0020, 0x0003);
            bcm43xx_phy_write(bcm, 0x001D, 0x0F40);
            bcm43xx_phy_write(bcm, 0x001F, 0x1C00);

            bcm43xx_phy_write(bcm, 0x002A, (bcm43xx_phy_read(bcm, 0x002A) & 0x00FF) | 0x0400);
            bcm43xx_phy_write(bcm, 0x002B, bcm43xx_phy_read(bcm, 0x002B) & 0xFBFF);
            bcm43xx_phy_write(bcm, 0x008E, 0x58C1);

            bcm43xx_ilt_write(bcm, 0x0803, 0x000F);
            bcm43xx_ilt_write(bcm, 0x0804, 0x001F);
            bcm43xx_ilt_write(bcm, 0x0805, 0x002A);
            bcm43xx_ilt_write(bcm, 0x0805, 0x0030);
            bcm43xx_ilt_write(bcm, 0x0807, 0x003A);

            bcm43xx_ilt_write(bcm, 0x0000, 0x0013);
            bcm43xx_ilt_write(bcm, 0x0001, 0x0013);
            bcm43xx_ilt_write(bcm, 0x0002, 0x0013);
            bcm43xx_ilt_write(bcm, 0x0003, 0x0013);
            bcm43xx_ilt_write(bcm, 0x0004, 0x0015);
            bcm43xx_ilt_write(bcm, 0x0005, 0x0015);
            bcm43xx_ilt_write(bcm, 0x0006, 0x0019);

            bcm43xx_ilt_write(bcm, 0x0404, 0x0003);
            bcm43xx_ilt_write(bcm, 0x0405, 0x0003);
            bcm43xx_ilt_write(bcm, 0x0406, 0x0007);

            for (i = 0; i < 16; i++)
                  bcm43xx_ilt_write(bcm, 0x4000 + i, (0x8 + i) & 0x000F);

            bcm43xx_ilt_write(bcm, 0x3003, 0x1044);
            bcm43xx_ilt_write(bcm, 0x3004, 0x7201);
            bcm43xx_ilt_write(bcm, 0x3006, 0x0040);
            bcm43xx_ilt_write(bcm, 0x3001, (bcm43xx_ilt_read(bcm, 0x3001) & 0x0010) | 0x0008);

            for (i = 0; i < BCM43xx_ILT_FINEFREQA_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x5800 + i, bcm43xx_ilt_finefreqa[i]);
            for (i = 0; i < BCM43xx_ILT_NOISEA2_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x1800 + i, bcm43xx_ilt_noisea2[i]);
            for (i = 0; i < BCM43xx_ILT_ROTOR_SIZE; i++)
                  bcm43xx_ilt_write32(bcm, 0x2000 + i, bcm43xx_ilt_rotor[i]);
            bcm43xx_phy_init_noisescaletbl(bcm);
            for (i = 0; i < BCM43xx_ILT_RETARD_SIZE; i++)
                  bcm43xx_ilt_write32(bcm, 0x2400 + i, bcm43xx_ilt_retard[i]);
            break;
      case 3:
            for (i = 0; i < 64; i++)
                  bcm43xx_ilt_write(bcm, 0x4000 + i, i);

            bcm43xx_ilt_write(bcm, 0x3807, 0x0051);

            bcm43xx_phy_write(bcm, 0x001C, 0x0FF9);
            bcm43xx_phy_write(bcm, 0x0020, bcm43xx_phy_read(bcm, 0x0020) & 0xFF0F);
            bcm43xx_radio_write16(bcm, 0x0002, 0x07BF);

            bcm43xx_phy_write(bcm, 0x0024, 0x4680);
            bcm43xx_phy_write(bcm, 0x0020, 0x0003);
            bcm43xx_phy_write(bcm, 0x001D, 0x0F40);
            bcm43xx_phy_write(bcm, 0x001F, 0x1C00);
            bcm43xx_phy_write(bcm, 0x002A, (bcm43xx_phy_read(bcm, 0x002A) & 0x00FF) | 0x0400);

            bcm43xx_ilt_write(bcm, 0x3001, (bcm43xx_ilt_read(bcm, 0x3001) & 0x0010) | 0x0008);
            for (i = 0; i < BCM43xx_ILT_NOISEA3_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x1800 + i, bcm43xx_ilt_noisea3[i]);
            bcm43xx_phy_init_noisescaletbl(bcm);
            for (i = 0; i < BCM43xx_ILT_SIGMASQR_SIZE; i++)
                  bcm43xx_ilt_write(bcm, 0x5000 + i, bcm43xx_ilt_sigmasqr1[i]);

            bcm43xx_phy_write(bcm, 0x0003, 0x1808);

            bcm43xx_ilt_write(bcm, 0x0803, 0x000F);
            bcm43xx_ilt_write(bcm, 0x0804, 0x001F);
            bcm43xx_ilt_write(bcm, 0x0805, 0x002A);
            bcm43xx_ilt_write(bcm, 0x0805, 0x0030);
            bcm43xx_ilt_write(bcm, 0x0807, 0x003A);

            bcm43xx_ilt_write(bcm, 0x0000, 0x0013);
            bcm43xx_ilt_write(bcm, 0x0001, 0x0013);
            bcm43xx_ilt_write(bcm, 0x0002, 0x0013);
            bcm43xx_ilt_write(bcm, 0x0003, 0x0013);
            bcm43xx_ilt_write(bcm, 0x0004, 0x0015);
            bcm43xx_ilt_write(bcm, 0x0005, 0x0015);
            bcm43xx_ilt_write(bcm, 0x0006, 0x0019);

            bcm43xx_ilt_write(bcm, 0x0404, 0x0003);
            bcm43xx_ilt_write(bcm, 0x0405, 0x0003);
            bcm43xx_ilt_write(bcm, 0x0406, 0x0007);

            bcm43xx_ilt_write(bcm, 0x3C02, 0x000F);
            bcm43xx_ilt_write(bcm, 0x3C03, 0x0014);
            break;
      default:
            assert(0);
      }
}

/* Initialize APHY. This is also called for the GPHY in some cases. */
static void bcm43xx_phy_inita(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      u16 tval;

      if (phy->type == BCM43xx_PHYTYPE_A) {
            bcm43xx_phy_setupa(bcm);
      } else {
            bcm43xx_phy_setupg(bcm);
            if (bcm->sprom.boardflags & BCM43xx_BFL_PACTRL)
                  bcm43xx_phy_write(bcm, 0x046E, 0x03CF);
            return;
      }

      bcm43xx_phy_write(bcm, BCM43xx_PHY_A_CRS,
                        (bcm43xx_phy_read(bcm, BCM43xx_PHY_A_CRS) & 0xF83C) | 0x0340);
      bcm43xx_phy_write(bcm, 0x0034, 0x0001);

      TODO();//TODO: RSSI AGC
      bcm43xx_phy_write(bcm, BCM43xx_PHY_A_CRS,
                        bcm43xx_phy_read(bcm, BCM43xx_PHY_A_CRS) | (1 << 14));
      bcm43xx_radio_init2060(bcm);

      if ((bcm->board_vendor == PCI_VENDOR_ID_BROADCOM)
          && ((bcm->board_type == 0x0416) || (bcm->board_type == 0x040A))) {
            if (radio->lofcal == 0xFFFF) {
                  TODO();//TODO: LOF Cal
                  bcm43xx_radio_set_tx_iq(bcm);
            } else
                  bcm43xx_radio_write16(bcm, 0x001E, radio->lofcal);
      }

      bcm43xx_phy_write(bcm, 0x007A, 0xF111);

      if (phy->savedpctlreg == 0xFFFF) {
            bcm43xx_radio_write16(bcm, 0x0019, 0x0000);
            bcm43xx_radio_write16(bcm, 0x0017, 0x0020);

            tval = bcm43xx_ilt_read(bcm, 0x3001);
            if (phy->rev == 1) {
                  bcm43xx_ilt_write(bcm, 0x3001,
                                (bcm43xx_ilt_read(bcm, 0x3001) & 0xFF87)
                                | 0x0058);
            } else {
                  bcm43xx_ilt_write(bcm, 0x3001,
                                (bcm43xx_ilt_read(bcm, 0x3001) & 0xFFC3)
                                | 0x002C);
            }
            bcm43xx_dummy_transmission(bcm);
            phy->savedpctlreg = bcm43xx_phy_read(bcm, BCM43xx_PHY_A_PCTL);
            bcm43xx_ilt_write(bcm, 0x3001, tval);

            bcm43xx_radio_set_txpower_a(bcm, 0x0018);
      }
      bcm43xx_radio_clear_tssi(bcm);
}

static void bcm43xx_phy_initb2(struct bcm43xx_private *bcm)
{
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      u16 offset, val;

      bcm43xx_write16(bcm, 0x03EC, 0x3F22);
      bcm43xx_phy_write(bcm, 0x0020, 0x301C);
      bcm43xx_phy_write(bcm, 0x0026, 0x0000);
      bcm43xx_phy_write(bcm, 0x0030, 0x00C6);
      bcm43xx_phy_write(bcm, 0x0088, 0x3E00);
      val = 0x3C3D;
      for (offset = 0x0089; offset < 0x00A7; offset++) {
            bcm43xx_phy_write(bcm, offset, val);
            val -= 0x0202;
      }
      bcm43xx_phy_write(bcm, 0x03E4, 0x3000);
      if (radio->channel == 0xFF)
            bcm43xx_radio_selectchannel(bcm, BCM43xx_RADIO_DEFAULT_CHANNEL_BG, 0);
      else
            bcm43xx_radio_selectchannel(bcm, radio->channel, 0);
      if (radio->version != 0x2050) {
            bcm43xx_radio_write16(bcm, 0x0075, 0x0080);
            bcm43xx_radio_write16(bcm, 0x0079, 0x0081);
      }
      bcm43xx_radio_write16(bcm, 0x0050, 0x0020);
      bcm43xx_radio_write16(bcm, 0x0050, 0x0023);
      if (radio->version == 0x2050) {
            bcm43xx_radio_write16(bcm, 0x0050, 0x0020);
            bcm43xx_radio_write16(bcm, 0x005A, 0x0070);
            bcm43xx_radio_write16(bcm, 0x005B, 0x007B);
            bcm43xx_radio_write16(bcm, 0x005C, 0x00B0);
            bcm43xx_radio_write16(bcm, 0x007A, 0x000F);
            bcm43xx_phy_write(bcm, 0x0038, 0x0677);
            bcm43xx_radio_init2050(bcm);
      }
      bcm43xx_phy_write(bcm, 0x0014, 0x0080);
      bcm43xx_phy_write(bcm, 0x0032, 0x00CA);
      bcm43xx_phy_write(bcm, 0x0032, 0x00CC);
      bcm43xx_phy_write(bcm, 0x0035, 0x07C2);
      bcm43xx_phy_lo_b_measure(bcm);
      bcm43xx_phy_write(bcm, 0x0026, 0xCC00);
      if (radio->version != 0x2050)
            bcm43xx_phy_write(bcm, 0x0026, 0xCE00);
      bcm43xx_write16(bcm, BCM43xx_MMIO_CHANNEL_EXT, 0x1000);
      bcm43xx_phy_write(bcm, 0x002A, 0x88A3);
      if (radio->version != 0x2050)
            bcm43xx_phy_write(bcm, 0x002A, 0x88C2);
      bcm43xx_radio_set_txpower_bg(bcm, 0xFFFF, 0xFFFF, 0xFFFF);
      bcm43xx_phy_init_pctl(bcm);
}

static void bcm43xx_phy_initb4(struct bcm43xx_private *bcm)
{
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      u16 offset, val;

      bcm43xx_write16(bcm, 0x03EC, 0x3F22);
      bcm43xx_phy_write(bcm, 0x0020, 0x301C);
      bcm43xx_phy_write(bcm, 0x0026, 0x0000);
      bcm43xx_phy_write(bcm, 0x0030, 0x00C6);
      bcm43xx_phy_write(bcm, 0x0088, 0x3E00);
      val = 0x3C3D;
      for (offset = 0x0089; offset < 0x00A7; offset++) {
            bcm43xx_phy_write(bcm, offset, val);
            val -= 0x0202;
      }
      bcm43xx_phy_write(bcm, 0x03E4, 0x3000);
      if (radio->channel == 0xFF)
            bcm43xx_radio_selectchannel(bcm, BCM43xx_RADIO_DEFAULT_CHANNEL_BG, 0);
      else
            bcm43xx_radio_selectchannel(bcm, radio->channel, 0);
      if (radio->version != 0x2050) {
            bcm43xx_radio_write16(bcm, 0x0075, 0x0080);
            bcm43xx_radio_write16(bcm, 0x0079, 0x0081);
      }
      bcm43xx_radio_write16(bcm, 0x0050, 0x0020);
      bcm43xx_radio_write16(bcm, 0x0050, 0x0023);
      if (radio->version == 0x2050) {
            bcm43xx_radio_write16(bcm, 0x0050, 0x0020);
            bcm43xx_radio_write16(bcm, 0x005A, 0x0070);
            bcm43xx_radio_write16(bcm, 0x005B, 0x007B);
            bcm43xx_radio_write16(bcm, 0x005C, 0x00B0);
            bcm43xx_radio_write16(bcm, 0x007A, 0x000F);
            bcm43xx_phy_write(bcm, 0x0038, 0x0677);
            bcm43xx_radio_init2050(bcm);
      }
      bcm43xx_phy_write(bcm, 0x0014, 0x0080);
      bcm43xx_phy_write(bcm, 0x0032, 0x00CA);
      if (radio->version == 0x2050)
            bcm43xx_phy_write(bcm, 0x0032, 0x00E0);
      bcm43xx_phy_write(bcm, 0x0035, 0x07C2);

      bcm43xx_phy_lo_b_measure(bcm);

      bcm43xx_phy_write(bcm, 0x0026, 0xCC00);
      if (radio->version == 0x2050)
            bcm43xx_phy_write(bcm, 0x0026, 0xCE00);
      bcm43xx_write16(bcm, BCM43xx_MMIO_CHANNEL_EXT, 0x1100);
      bcm43xx_phy_write(bcm, 0x002A, 0x88A3);
      if (radio->version == 0x2050)
            bcm43xx_phy_write(bcm, 0x002A, 0x88C2);
      bcm43xx_radio_set_txpower_bg(bcm, 0xFFFF, 0xFFFF, 0xFFFF);
      if (bcm->sprom.boardflags & BCM43xx_BFL_RSSI) {
            bcm43xx_calc_nrssi_slope(bcm);
            bcm43xx_calc_nrssi_threshold(bcm);
      }
      bcm43xx_phy_init_pctl(bcm);
}

static void bcm43xx_phy_initb5(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      u16 offset;
      u16 value;
      u8 old_channel;

      if (phy->analog == 1)
            bcm43xx_radio_write16(bcm, 0x007A,
                              bcm43xx_radio_read16(bcm, 0x007A)
                              | 0x0050);
      if ((bcm->board_vendor != PCI_VENDOR_ID_BROADCOM) &&
          (bcm->board_type != 0x0416)) {
            value = 0x2120;
            for (offset = 0x00A8 ; offset < 0x00C7; offset++) {
                  bcm43xx_phy_write(bcm, offset, value);
                  value += 0x0202;
            }
      }
      bcm43xx_phy_write(bcm, 0x0035,
                    (bcm43xx_phy_read(bcm, 0x0035) & 0xF0FF)
                    | 0x0700);
      if (radio->version == 0x2050)
            bcm43xx_phy_write(bcm, 0x0038, 0x0667);

      if (phy->connected) {
            if (radio->version == 0x2050) {
                  bcm43xx_radio_write16(bcm, 0x007A,
                                    bcm43xx_radio_read16(bcm, 0x007A)
                                    | 0x0020);
                  bcm43xx_radio_write16(bcm, 0x0051,
                                    bcm43xx_radio_read16(bcm, 0x0051)
                                    | 0x0004);
            }
            bcm43xx_write16(bcm, BCM43xx_MMIO_PHY_RADIO, 0x0000);

            bcm43xx_phy_write(bcm, 0x0802, bcm43xx_phy_read(bcm, 0x0802) | 0x0100);
            bcm43xx_phy_write(bcm, 0x042B, bcm43xx_phy_read(bcm, 0x042B) | 0x2000);

            bcm43xx_phy_write(bcm, 0x001C, 0x186A);

            bcm43xx_phy_write(bcm, 0x0013, (bcm43xx_phy_read(bcm, 0x0013) & 0x00FF) | 0x1900);
            bcm43xx_phy_write(bcm, 0x0035, (bcm43xx_phy_read(bcm, 0x0035) & 0xFFC0) | 0x0064);
            bcm43xx_phy_write(bcm, 0x005D, (bcm43xx_phy_read(bcm, 0x005D) & 0xFF80) | 0x000A);
      }

      if (bcm->bad_frames_preempt) {
            bcm43xx_phy_write(bcm, BCM43xx_PHY_RADIO_BITFIELD,
                          bcm43xx_phy_read(bcm, BCM43xx_PHY_RADIO_BITFIELD) | (1 << 11));
      }

      if (phy->analog == 1) {
            bcm43xx_phy_write(bcm, 0x0026, 0xCE00);
            bcm43xx_phy_write(bcm, 0x0021, 0x3763);
            bcm43xx_phy_write(bcm, 0x0022, 0x1BC3);
            bcm43xx_phy_write(bcm, 0x0023, 0x06F9);
            bcm43xx_phy_write(bcm, 0x0024, 0x037E);
      } else
            bcm43xx_phy_write(bcm, 0x0026, 0xCC00);
      bcm43xx_phy_write(bcm, 0x0030, 0x00C6);
      bcm43xx_write16(bcm, 0x03EC, 0x3F22);

      if (phy->analog == 1)
            bcm43xx_phy_write(bcm, 0x0020, 0x3E1C);
      else
            bcm43xx_phy_write(bcm, 0x0020, 0x301C);

      if (phy->analog == 0)
            bcm43xx_write16(bcm, 0x03E4, 0x3000);

      old_channel = radio->channel;
      /* Force to channel 7, even if not supported. */
      bcm43xx_radio_selectchannel(bcm, 7, 0);

      if (radio->version != 0x2050) {
            bcm43xx_radio_write16(bcm, 0x0075, 0x0080);
            bcm43xx_radio_write16(bcm, 0x0079, 0x0081);
      }

      bcm43xx_radio_write16(bcm, 0x0050, 0x0020);
      bcm43xx_radio_write16(bcm, 0x0050, 0x0023);

      if (radio->version == 0x2050) {
            bcm43xx_radio_write16(bcm, 0x0050, 0x0020);
            bcm43xx_radio_write16(bcm, 0x005A, 0x0070);
      }

      bcm43xx_radio_write16(bcm, 0x005B, 0x007B);
      bcm43xx_radio_write16(bcm, 0x005C, 0x00B0);

      bcm43xx_radio_write16(bcm, 0x007A, bcm43xx_radio_read16(bcm, 0x007A) | 0x0007);

      bcm43xx_radio_selectchannel(bcm, old_channel, 0);

      bcm43xx_phy_write(bcm, 0x0014, 0x0080);
      bcm43xx_phy_write(bcm, 0x0032, 0x00CA);
      bcm43xx_phy_write(bcm, 0x002A, 0x88A3);

      bcm43xx_radio_set_txpower_bg(bcm, 0xFFFF, 0xFFFF, 0xFFFF);

      if (radio->version == 0x2050)
            bcm43xx_radio_write16(bcm, 0x005D, 0x000D);

      bcm43xx_write16(bcm, 0x03E4, (bcm43xx_read16(bcm, 0x03E4) & 0xFFC0) | 0x0004);
}

static void bcm43xx_phy_initb6(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      u16 offset, val;
      u8 old_channel;

      bcm43xx_phy_write(bcm, 0x003E, 0x817A);
      bcm43xx_radio_write16(bcm, 0x007A,
                            (bcm43xx_radio_read16(bcm, 0x007A) | 0x0058));
      if (radio->revision == 4 ||
           radio->revision == 5) {
            bcm43xx_radio_write16(bcm, 0x0051, 0x0037);
            bcm43xx_radio_write16(bcm, 0x0052, 0x0070);
            bcm43xx_radio_write16(bcm, 0x0053, 0x00B3);
            bcm43xx_radio_write16(bcm, 0x0054, 0x009B);
            bcm43xx_radio_write16(bcm, 0x005A, 0x0088);
            bcm43xx_radio_write16(bcm, 0x005B, 0x0088);
            bcm43xx_radio_write16(bcm, 0x005D, 0x0088);
            bcm43xx_radio_write16(bcm, 0x005E, 0x0088);
            bcm43xx_radio_write16(bcm, 0x007D, 0x0088);
            bcm43xx_shm_write32(bcm, BCM43xx_SHM_SHARED,
                            BCM43xx_UCODEFLAGS_OFFSET,
                            (bcm43xx_shm_read32(bcm, BCM43xx_SHM_SHARED,
                            BCM43xx_UCODEFLAGS_OFFSET)
                            | 0x00000200));
      }
      if (radio->revision == 8) {
            bcm43xx_radio_write16(bcm, 0x0051, 0x0000);
            bcm43xx_radio_write16(bcm, 0x0052, 0x0040);
            bcm43xx_radio_write16(bcm, 0x0053, 0x00B7);
            bcm43xx_radio_write16(bcm, 0x0054, 0x0098);
            bcm43xx_radio_write16(bcm, 0x005A, 0x0088);
            bcm43xx_radio_write16(bcm, 0x005B, 0x006B);
            bcm43xx_radio_write16(bcm, 0x005C, 0x000F);
            if (bcm->sprom.boardflags & 0x8000) {
                  bcm43xx_radio_write16(bcm, 0x005D, 0x00FA);
                  bcm43xx_radio_write16(bcm, 0x005E, 0x00D8);
            } else {
                  bcm43xx_radio_write16(bcm, 0x005D, 0x00F5);
                  bcm43xx_radio_write16(bcm, 0x005E, 0x00B8);
            }
            bcm43xx_radio_write16(bcm, 0x0073, 0x0003);
            bcm43xx_radio_write16(bcm, 0x007D, 0x00A8);
            bcm43xx_radio_write16(bcm, 0x007C, 0x0001);
            bcm43xx_radio_write16(bcm, 0x007E, 0x0008);
      }
      val = 0x1E1F;
      for (offset = 0x0088; offset < 0x0098; offset++) {
            bcm43xx_phy_write(bcm, offset, val);
            val -= 0x0202;
      }
      val = 0x3E3F;
      for (offset = 0x0098; offset < 0x00A8; offset++) {
            bcm43xx_phy_write(bcm, offset, val);
            val -= 0x0202;
      }
      val = 0x2120;
      for (offset = 0x00A8; offset < 0x00C8; offset++) {
            bcm43xx_phy_write(bcm, offset, (val & 0x3F3F));
            val += 0x0202;
      }
      if (phy->type == BCM43xx_PHYTYPE_G) {
            bcm43xx_radio_write16(bcm, 0x007A,
                                  bcm43xx_radio_read16(bcm, 0x007A) | 0x0020);
            bcm43xx_radio_write16(bcm, 0x0051,
                                  bcm43xx_radio_read16(bcm, 0x0051) | 0x0004);
            bcm43xx_phy_write(bcm, 0x0802,
                              bcm43xx_phy_read(bcm, 0x0802) | 0x0100);
            bcm43xx_phy_write(bcm, 0x042B,
                              bcm43xx_phy_read(bcm, 0x042B) | 0x2000);
            bcm43xx_phy_write(bcm, 0x5B, 0x0000);
            bcm43xx_phy_write(bcm, 0x5C, 0x0000);
      }

      old_channel = radio->channel;
      if (old_channel >= 8)
            bcm43xx_radio_selectchannel(bcm, 1, 0);
      else
            bcm43xx_radio_selectchannel(bcm, 13, 0);

      bcm43xx_radio_write16(bcm, 0x0050, 0x0020);
      bcm43xx_radio_write16(bcm, 0x0050, 0x0023);
      udelay(40);
      if (radio->revision < 6 || radio-> revision == 8) {
            bcm43xx_radio_write16(bcm, 0x007C, (bcm43xx_radio_read16(bcm, 0x007C)
                              | 0x0002));
            bcm43xx_radio_write16(bcm, 0x0050, 0x0020);
      }
      if (radio->revision <= 2) {
            bcm43xx_radio_write16(bcm, 0x007C, 0x0020);
            bcm43xx_radio_write16(bcm, 0x005A, 0x0070);
            bcm43xx_radio_write16(bcm, 0x005B, 0x007B);
            bcm43xx_radio_write16(bcm, 0x005C, 0x00B0);
      }
      bcm43xx_radio_write16(bcm, 0x007A,
                            (bcm43xx_radio_read16(bcm, 0x007A) & 0x00F8) | 0x0007);

      bcm43xx_radio_selectchannel(bcm, old_channel, 0);

      bcm43xx_phy_write(bcm, 0x0014, 0x0200);
      if (radio->revision >= 6)
            bcm43xx_phy_write(bcm, 0x002A, 0x88C2);
      else
            bcm43xx_phy_write(bcm, 0x002A, 0x8AC0);
      bcm43xx_phy_write(bcm, 0x0038, 0x0668);
      bcm43xx_radio_set_txpower_bg(bcm, 0xFFFF, 0xFFFF, 0xFFFF);
      if (radio->revision <= 5)
            bcm43xx_phy_write(bcm, 0x005D, (bcm43xx_phy_read(bcm, 0x005D)
                            & 0xFF80) | 0x0003);
      if (radio->revision <= 2)
            bcm43xx_radio_write16(bcm, 0x005D, 0x000D);
      
      if (phy->analog == 4){
            bcm43xx_write16(bcm, 0x03E4, 0x0009);
            bcm43xx_phy_write(bcm, 0x61, bcm43xx_phy_read(bcm, 0x61) & 0xFFF);
      } else {
            bcm43xx_phy_write(bcm, 0x0002, (bcm43xx_phy_read(bcm, 0x0002) & 0xFFC0) | 0x0004);
      }
      if (phy->type == BCM43xx_PHYTYPE_G)
            bcm43xx_write16(bcm, 0x03E6, 0x0);
      if (phy->type == BCM43xx_PHYTYPE_B) {
            bcm43xx_write16(bcm, 0x03E6, 0x8140);
            bcm43xx_phy_write(bcm, 0x0016, 0x0410);
            bcm43xx_phy_write(bcm, 0x0017, 0x0820);
            bcm43xx_phy_write(bcm, 0x0062, 0x0007);
            bcm43xx_radio_init2050(bcm);
            bcm43xx_phy_lo_g_measure(bcm);
            if (bcm->sprom.boardflags & BCM43xx_BFL_RSSI) {
                  bcm43xx_calc_nrssi_slope(bcm);
                  bcm43xx_calc_nrssi_threshold(bcm);
            }
            bcm43xx_phy_init_pctl(bcm);
      }
}

static void bcm43xx_calc_loopback_gain(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      u16 backup_phy[15] = {0};
      u16 backup_radio[3];
      u16 backup_bband;
      u16 i;
      u16 loop1_cnt, loop1_done, loop1_omitted;
      u16 loop2_done;

      backup_phy[0] = bcm43xx_phy_read(bcm, 0x0429);
      backup_phy[1] = bcm43xx_phy_read(bcm, 0x0001);
      backup_phy[2] = bcm43xx_phy_read(bcm, 0x0811);
      backup_phy[3] = bcm43xx_phy_read(bcm, 0x0812);
      if (phy->rev != 1) {
            backup_phy[4] = bcm43xx_phy_read(bcm, 0x0814);
            backup_phy[5] = bcm43xx_phy_read(bcm, 0x0815);
      }
      backup_phy[6] = bcm43xx_phy_read(bcm, 0x005A);
      backup_phy[7] = bcm43xx_phy_read(bcm, 0x0059);
      backup_phy[8] = bcm43xx_phy_read(bcm, 0x0058);
      backup_phy[9] = bcm43xx_phy_read(bcm, 0x000A);
      backup_phy[10] = bcm43xx_phy_read(bcm, 0x0003);
      backup_phy[11] = bcm43xx_phy_read(bcm, 0x080F);
      backup_phy[12] = bcm43xx_phy_read(bcm, 0x0810);
      backup_phy[13] = bcm43xx_phy_read(bcm, 0x002B);
      backup_phy[14] = bcm43xx_phy_read(bcm, 0x0015);
      bcm43xx_phy_read(bcm, 0x002D); /* dummy read */
      backup_bband = radio->baseband_atten;
      backup_radio[0] = bcm43xx_radio_read16(bcm, 0x0052);
      backup_radio[1] = bcm43xx_radio_read16(bcm, 0x0043);
      backup_radio[2] = bcm43xx_radio_read16(bcm, 0x007A);

      bcm43xx_phy_write(bcm, 0x0429,
                    bcm43xx_phy_read(bcm, 0x0429) & 0x3FFF);
      bcm43xx_phy_write(bcm, 0x0001,
                    bcm43xx_phy_read(bcm, 0x0001) & 0x8000);
      bcm43xx_phy_write(bcm, 0x0811,
                    bcm43xx_phy_read(bcm, 0x0811) | 0x0002);
      bcm43xx_phy_write(bcm, 0x0812,
                    bcm43xx_phy_read(bcm, 0x0812) & 0xFFFD);
      bcm43xx_phy_write(bcm, 0x0811,
                    bcm43xx_phy_read(bcm, 0x0811) | 0x0001);
      bcm43xx_phy_write(bcm, 0x0812,
                    bcm43xx_phy_read(bcm, 0x0812) & 0xFFFE);
      if (phy->rev != 1) {
            bcm43xx_phy_write(bcm, 0x0814,
                          bcm43xx_phy_read(bcm, 0x0814) | 0x0001);
            bcm43xx_phy_write(bcm, 0x0815,
                          bcm43xx_phy_read(bcm, 0x0815) & 0xFFFE);
            bcm43xx_phy_write(bcm, 0x0814,
                          bcm43xx_phy_read(bcm, 0x0814) | 0x0002);
            bcm43xx_phy_write(bcm, 0x0815,
                          bcm43xx_phy_read(bcm, 0x0815) & 0xFFFD);
      }
      bcm43xx_phy_write(bcm, 0x0811,
                    bcm43xx_phy_read(bcm, 0x0811) | 0x000C);
      bcm43xx_phy_write(bcm, 0x0812,
                    bcm43xx_phy_read(bcm, 0x0812) | 0x000C);

      bcm43xx_phy_write(bcm, 0x0811,
                    (bcm43xx_phy_read(bcm, 0x0811)
                     & 0xFFCF) | 0x0030);
      bcm43xx_phy_write(bcm, 0x0812,
                    (bcm43xx_phy_read(bcm, 0x0812)
                     & 0xFFCF) | 0x0010);

      bcm43xx_phy_write(bcm, 0x005A, 0x0780);
      bcm43xx_phy_write(bcm, 0x0059, 0xC810);
      bcm43xx_phy_write(bcm, 0x0058, 0x000D);
      if (phy->analog == 0) {
            bcm43xx_phy_write(bcm, 0x0003, 0x0122);
      } else {
            bcm43xx_phy_write(bcm, 0x000A,
                          bcm43xx_phy_read(bcm, 0x000A)
                          | 0x2000);
      }
      if (phy->rev != 1) {
            bcm43xx_phy_write(bcm, 0x0814,
                          bcm43xx_phy_read(bcm, 0x0814) | 0x0004);
            bcm43xx_phy_write(bcm, 0x0815,
                          bcm43xx_phy_read(bcm, 0x0815) & 0xFFFB);
      }
      bcm43xx_phy_write(bcm, 0x0003,
                    (bcm43xx_phy_read(bcm, 0x0003)
                     & 0xFF9F) | 0x0040);
      if (radio->version == 0x2050 && radio->revision == 2) {
            bcm43xx_radio_write16(bcm, 0x0052, 0x0000);
            bcm43xx_radio_write16(bcm, 0x0043,
                              (bcm43xx_radio_read16(bcm, 0x0043)
                               & 0xFFF0) | 0x0009);
            loop1_cnt = 9;
      } else if (radio->revision == 8) {
            bcm43xx_radio_write16(bcm, 0x0043, 0x000F);
            loop1_cnt = 15;
      } else
            loop1_cnt = 0;

      bcm43xx_phy_set_baseband_attenuation(bcm, 11);

      if (phy->rev >= 3)
            bcm43xx_phy_write(bcm, 0x080F, 0xC020);
      else
            bcm43xx_phy_write(bcm, 0x080F, 0x8020);
      bcm43xx_phy_write(bcm, 0x0810, 0x0000);

      bcm43xx_phy_write(bcm, 0x002B,
                    (bcm43xx_phy_read(bcm, 0x002B)
                     & 0xFFC0) | 0x0001);
      bcm43xx_phy_write(bcm, 0x002B,
                    (bcm43xx_phy_read(bcm, 0x002B)
                     & 0xC0FF) | 0x0800);
      bcm43xx_phy_write(bcm, 0x0811,
                    bcm43xx_phy_read(bcm, 0x0811) | 0x0100);
      bcm43xx_phy_write(bcm, 0x0812,
                    bcm43xx_phy_read(bcm, 0x0812) & 0xCFFF);
      if (bcm->sprom.boardflags & BCM43xx_BFL_EXTLNA) {
            if (phy->rev >= 7) {
                  bcm43xx_phy_write(bcm, 0x0811,
                                bcm43xx_phy_read(bcm, 0x0811)
                                | 0x0800);
                  bcm43xx_phy_write(bcm, 0x0812,
                                bcm43xx_phy_read(bcm, 0x0812)
                                | 0x8000);
            }
      }
      bcm43xx_radio_write16(bcm, 0x007A,
                        bcm43xx_radio_read16(bcm, 0x007A)
                        & 0x00F7);

      for (i = 0; i < loop1_cnt; i++) {
            bcm43xx_radio_write16(bcm, 0x0043, loop1_cnt);
            bcm43xx_phy_write(bcm, 0x0812,
                          (bcm43xx_phy_read(bcm, 0x0812)
                           & 0xF0FF) | (i << 8));
            bcm43xx_phy_write(bcm, 0x0015,
                          (bcm43xx_phy_read(bcm, 0x0015)
                           & 0x0FFF) | 0xA000);
            bcm43xx_phy_write(bcm, 0x0015,
                          (bcm43xx_phy_read(bcm, 0x0015)
                           & 0x0FFF) | 0xF000);
            udelay(20);
            if (bcm43xx_phy_read(bcm, 0x002D) >= 0x0DFC)
                  break;
      }
      loop1_done = i;
      loop1_omitted = loop1_cnt - loop1_done;

      loop2_done = 0;
      if (loop1_done >= 8) {
            bcm43xx_phy_write(bcm, 0x0812,
                          bcm43xx_phy_read(bcm, 0x0812)
                          | 0x0030);
            for (i = loop1_done - 8; i < 16; i++) {
                  bcm43xx_phy_write(bcm, 0x0812,
                                (bcm43xx_phy_read(bcm, 0x0812)
                                 & 0xF0FF) | (i << 8));
                  bcm43xx_phy_write(bcm, 0x0015,
                                (bcm43xx_phy_read(bcm, 0x0015)
                                 & 0x0FFF) | 0xA000);
                  bcm43xx_phy_write(bcm, 0x0015,
                                (bcm43xx_phy_read(bcm, 0x0015)
                                 & 0x0FFF) | 0xF000);
                  udelay(20);
                  if (bcm43xx_phy_read(bcm, 0x002D) >= 0x0DFC)
                        break;
            }
      }

      if (phy->rev != 1) {
            bcm43xx_phy_write(bcm, 0x0814, backup_phy[4]);
            bcm43xx_phy_write(bcm, 0x0815, backup_phy[5]);
      }
      bcm43xx_phy_write(bcm, 0x005A, backup_phy[6]);
      bcm43xx_phy_write(bcm, 0x0059, backup_phy[7]);
      bcm43xx_phy_write(bcm, 0x0058, backup_phy[8]);
      bcm43xx_phy_write(bcm, 0x000A, backup_phy[9]);
      bcm43xx_phy_write(bcm, 0x0003, backup_phy[10]);
      bcm43xx_phy_write(bcm, 0x080F, backup_phy[11]);
      bcm43xx_phy_write(bcm, 0x0810, backup_phy[12]);
      bcm43xx_phy_write(bcm, 0x002B, backup_phy[13]);
      bcm43xx_phy_write(bcm, 0x0015, backup_phy[14]);

      bcm43xx_phy_set_baseband_attenuation(bcm, backup_bband);

      bcm43xx_radio_write16(bcm, 0x0052, backup_radio[0]);
      bcm43xx_radio_write16(bcm, 0x0043, backup_radio[1]);
      bcm43xx_radio_write16(bcm, 0x007A, backup_radio[2]);

      bcm43xx_phy_write(bcm, 0x0811, backup_phy[2] | 0x0003);
      udelay(10);
      bcm43xx_phy_write(bcm, 0x0811, backup_phy[2]);
      bcm43xx_phy_write(bcm, 0x0812, backup_phy[3]);
      bcm43xx_phy_write(bcm, 0x0429, backup_phy[0]);
      bcm43xx_phy_write(bcm, 0x0001, backup_phy[1]);

      phy->loopback_gain[0] = ((loop1_done * 6) - (loop1_omitted * 4)) - 11;
      phy->loopback_gain[1] = (24 - (3 * loop2_done)) * 2;
}

static void bcm43xx_phy_initg(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      u16 tmp;

      if (phy->rev == 1)
            bcm43xx_phy_initb5(bcm);
      else
            bcm43xx_phy_initb6(bcm);
      if (phy->rev >= 2 || phy->connected)
            bcm43xx_phy_inita(bcm);

      if (phy->rev >= 2) {
            bcm43xx_phy_write(bcm, 0x0814, 0x0000);
            bcm43xx_phy_write(bcm, 0x0815, 0x0000);
      }
      if (phy->rev == 2) {
            bcm43xx_phy_write(bcm, 0x0811, 0x0000);
            bcm43xx_phy_write(bcm, 0x0015, 0x00C0);
      }
      if (phy->rev > 5) {
            bcm43xx_phy_write(bcm, 0x0811, 0x0400);
            bcm43xx_phy_write(bcm, 0x0015, 0x00C0);
      }
      if (phy->rev >= 2 && phy->connected) {
            tmp = bcm43xx_phy_read(bcm, 0x0400) & 0xFF;
            if (tmp ==3 || tmp == 5) {
                  bcm43xx_phy_write(bcm, 0x04C2, 0x1816);
                  bcm43xx_phy_write(bcm, 0x04C3, 0x8006);
                  if (tmp == 5) {
                        bcm43xx_phy_write(bcm, 0x04CC,
                                      (bcm43xx_phy_read(bcm, 0x04CC)
                                       & 0x00FF) | 0x1F00);
                  }
            }
            bcm43xx_phy_write(bcm, 0x047E, 0x0078);
      }
      if (radio->revision == 8) {
            bcm43xx_phy_write(bcm, 0x0801, bcm43xx_phy_read(bcm, 0x0801) | 0x0080);
            bcm43xx_phy_write(bcm, 0x043E, bcm43xx_phy_read(bcm, 0x043E) | 0x0004);
      }
      if (phy->rev >= 2 && phy->connected)
            bcm43xx_calc_loopback_gain(bcm);
      if (radio->revision != 8) {
            if (radio->initval == 0xFFFF)
                  radio->initval = bcm43xx_radio_init2050(bcm);
            else
                  bcm43xx_radio_write16(bcm, 0x0078, radio->initval);
      }
      if (radio->txctl2 == 0xFFFF) {
            bcm43xx_phy_lo_g_measure(bcm);
      } else {
            if (radio->version == 0x2050 && radio->revision == 8) {
                  bcm43xx_radio_write16(bcm, 0x0052,
                                    (radio->txctl1 << 4) | radio->txctl2);
            } else {
                  bcm43xx_radio_write16(bcm, 0x0052,
                                    (bcm43xx_radio_read16(bcm, 0x0052)
                                     & 0xFFF0) | radio->txctl1);
            }
            if (phy->rev >= 6) {
                  bcm43xx_phy_write(bcm, 0x0036,
                                (bcm43xx_phy_read(bcm, 0x0036)
                                 & 0x0FFF) | (radio->txctl2 << 12));
            }
            if (bcm->sprom.boardflags & BCM43xx_BFL_PACTRL)
                  bcm43xx_phy_write(bcm, 0x002E, 0x8075);
            else
                  bcm43xx_phy_write(bcm, 0x002E, 0x807F);
            if (phy->rev < 2)
                  bcm43xx_phy_write(bcm, 0x002F, 0x0101);
            else
                  bcm43xx_phy_write(bcm, 0x002F, 0x0202);
      }
      if (phy->connected || phy->rev >= 2) {
            bcm43xx_phy_lo_adjust(bcm, 0);
            bcm43xx_phy_write(bcm, 0x080F, 0x8078);
      }

      if (!(bcm->sprom.boardflags & BCM43xx_BFL_RSSI)) {
            /* The specs state to update the NRSSI LT with
             * the value 0x7FFFFFFF here. I think that is some weird
             * compiler optimization in the original driver.
             * Essentially, what we do here is resetting all NRSSI LT
             * entries to -32 (see the limit_value() in nrssi_hw_update())
             */
            bcm43xx_nrssi_hw_update(bcm, 0xFFFF);
            bcm43xx_calc_nrssi_threshold(bcm);
      } else if (phy->connected || phy->rev >= 2) {
            if (radio->nrssi[0] == -1000) {
                  assert(radio->nrssi[1] == -1000);
                  bcm43xx_calc_nrssi_slope(bcm);
            } else {
                  assert(radio->nrssi[1] != -1000);
                  bcm43xx_calc_nrssi_threshold(bcm);
            }
      }
      if (radio->revision == 8)
            bcm43xx_phy_write(bcm, 0x0805, 0x3230);
      bcm43xx_phy_init_pctl(bcm);
      if (bcm->chip_id == 0x4306 && bcm->chip_package == 2) {
            bcm43xx_phy_write(bcm, 0x0429,
                          bcm43xx_phy_read(bcm, 0x0429) & 0xBFFF);
            bcm43xx_phy_write(bcm, 0x04C3,
                          bcm43xx_phy_read(bcm, 0x04C3) & 0x7FFF);
      }
}

static u16 bcm43xx_phy_lo_b_r15_loop(struct bcm43xx_private *bcm)
{
      int i;
      u16 ret = 0;
      unsigned long flags;

      local_irq_save(flags);
      for (i = 0; i < 10; i++){
            bcm43xx_phy_write(bcm, 0x0015, 0xAFA0);
            udelay(1);
            bcm43xx_phy_write(bcm, 0x0015, 0xEFA0);
            udelay(10);
            bcm43xx_phy_write(bcm, 0x0015, 0xFFA0);
            udelay(40);
            ret += bcm43xx_phy_read(bcm, 0x002C);
      }
      local_irq_restore(flags);
      bcm43xx_voluntary_preempt();

      return ret;
}

void bcm43xx_phy_lo_b_measure(struct bcm43xx_private *bcm)
{
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      u16 regstack[12] = { 0 };
      u16 mls;
      u16 fval;
      int i, j;

      regstack[0] = bcm43xx_phy_read(bcm, 0x0015);
      regstack[1] = bcm43xx_radio_read16(bcm, 0x0052) & 0xFFF0;

      if (radio->version == 0x2053) {
            regstack[2] = bcm43xx_phy_read(bcm, 0x000A);
            regstack[3] = bcm43xx_phy_read(bcm, 0x002A);
            regstack[4] = bcm43xx_phy_read(bcm, 0x0035);
            regstack[5] = bcm43xx_phy_read(bcm, 0x0003);
            regstack[6] = bcm43xx_phy_read(bcm, 0x0001);
            regstack[7] = bcm43xx_phy_read(bcm, 0x0030);

            regstack[8] = bcm43xx_radio_read16(bcm, 0x0043);
            regstack[9] = bcm43xx_radio_read16(bcm, 0x007A);
            regstack[10] = bcm43xx_read16(bcm, 0x03EC);
            regstack[11] = bcm43xx_radio_read16(bcm, 0x0052) & 0x00F0;

            bcm43xx_phy_write(bcm, 0x0030, 0x00FF);
            bcm43xx_write16(bcm, 0x03EC, 0x3F3F);
            bcm43xx_phy_write(bcm, 0x0035, regstack[4] & 0xFF7F);
            bcm43xx_radio_write16(bcm, 0x007A, regstack[9] & 0xFFF0);
      }
      bcm43xx_phy_write(bcm, 0x0015, 0xB000);
      bcm43xx_phy_write(bcm, 0x002B, 0x0004);

      if (radio->version == 0x2053) {
            bcm43xx_phy_write(bcm, 0x002B, 0x0203);
            bcm43xx_phy_write(bcm, 0x002A, 0x08A3);
      }

      phy->minlowsig[0] = 0xFFFF;

      for (i = 0; i < 4; i++) {
            bcm43xx_radio_write16(bcm, 0x0052, regstack[1] | i);
            bcm43xx_phy_lo_b_r15_loop(bcm);
      }
      for (i = 0; i < 10; i++) {
            bcm43xx_radio_write16(bcm, 0x0052, regstack[1] | i);
            mls = bcm43xx_phy_lo_b_r15_loop(bcm) / 10;
            if (mls < phy->minlowsig[0]) {
                  phy->minlowsig[0] = mls;
                  phy->minlowsigpos[0] = i;
            }
      }
      bcm43xx_radio_write16(bcm, 0x0052, regstack[1] | phy->minlowsigpos[0]);

      phy->minlowsig[1] = 0xFFFF;

      for (i = -4; i < 5; i += 2) {
            for (j = -4; j < 5; j += 2) {
                  if (j < 0)
                        fval = (0x0100 * i) + j + 0x0100;
                  else
                        fval = (0x0100 * i) + j;
                  bcm43xx_phy_write(bcm, 0x002F, fval);
                  mls = bcm43xx_phy_lo_b_r15_loop(bcm) / 10;
                  if (mls < phy->minlowsig[1]) {
                        phy->minlowsig[1] = mls;
                        phy->minlowsigpos[1] = fval;
                  }
            }
      }
      phy->minlowsigpos[1] += 0x0101;

      bcm43xx_phy_write(bcm, 0x002F, phy->minlowsigpos[1]);
      if (radio->version == 0x2053) {
            bcm43xx_phy_write(bcm, 0x000A, regstack[2]);
            bcm43xx_phy_write(bcm, 0x002A, regstack[3]);
            bcm43xx_phy_write(bcm, 0x0035, regstack[4]);
            bcm43xx_phy_write(bcm, 0x0003, regstack[5]);
            bcm43xx_phy_write(bcm, 0x0001, regstack[6]);
            bcm43xx_phy_write(bcm, 0x0030, regstack[7]);

            bcm43xx_radio_write16(bcm, 0x0043, regstack[8]);
            bcm43xx_radio_write16(bcm, 0x007A, regstack[9]);

            bcm43xx_radio_write16(bcm, 0x0052,
                                  (bcm43xx_radio_read16(bcm, 0x0052) & 0x000F)
                              | regstack[11]);

            bcm43xx_write16(bcm, 0x03EC, regstack[10]);
      }
      bcm43xx_phy_write(bcm, 0x0015, regstack[0]);
}

static inline
u16 bcm43xx_phy_lo_g_deviation_subval(struct bcm43xx_private *bcm, u16 control)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      u16 ret;
      unsigned long flags;

      local_irq_save(flags);
      if (phy->connected) {
            bcm43xx_phy_write(bcm, 0x15, 0xE300);
            control <<= 8;
            bcm43xx_phy_write(bcm, 0x0812, control | 0x00B0);
            udelay(5);
            bcm43xx_phy_write(bcm, 0x0812, control | 0x00B2);
            udelay(2);
            bcm43xx_phy_write(bcm, 0x0812, control | 0x00B3);
            udelay(4);
            bcm43xx_phy_write(bcm, 0x0015, 0xF300);
            udelay(8);
      } else {
            bcm43xx_phy_write(bcm, 0x0015, control | 0xEFA0);
            udelay(2);
            bcm43xx_phy_write(bcm, 0x0015, control | 0xEFE0);
            udelay(4);
            bcm43xx_phy_write(bcm, 0x0015, control | 0xFFE0);
            udelay(8);
      }
      ret = bcm43xx_phy_read(bcm, 0x002D);
      local_irq_restore(flags);
      bcm43xx_voluntary_preempt();

      return ret;
}

static u32 bcm43xx_phy_lo_g_singledeviation(struct bcm43xx_private *bcm, u16 control)
{
      int i;
      u32 ret = 0;

      for (i = 0; i < 8; i++)
            ret += bcm43xx_phy_lo_g_deviation_subval(bcm, control);

      return ret;
}

/* Write the LocalOscillator CONTROL */
static inline
void bcm43xx_lo_write(struct bcm43xx_private *bcm,
                  struct bcm43xx_lopair *pair)
{
      u16 value;

      value = (u8)(pair->low);
      value |= ((u8)(pair->high)) << 8;

#ifdef CONFIG_BCM43XX_DEBUG
      /* Sanity check. */
      if (pair->low < -8 || pair->low > 8 ||
          pair->high < -8 || pair->high > 8) {
            printk(KERN_WARNING PFX
                   "WARNING: Writing invalid LOpair "
                   "(low: %d, high: %d, index: %lu)\n",
                   pair->low, pair->high,
                   (unsigned long)(pair - bcm43xx_current_phy(bcm)->_lo_pairs));
            dump_stack();
      }
#endif

      bcm43xx_phy_write(bcm, BCM43xx_PHY_G_LO_CONTROL, value);
}

static inline
struct bcm43xx_lopair * bcm43xx_find_lopair(struct bcm43xx_private *bcm,
                                  u16 baseband_attenuation,
                                  u16 radio_attenuation,
                                  u16 tx)
{
      static const u8 dict[10] = { 11, 10, 11, 12, 13, 12, 13, 12, 13, 12 };
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);

      if (baseband_attenuation > 6)
            baseband_attenuation = 6;
      assert(radio_attenuation < 10);

      if (tx == 3) {
            return bcm43xx_get_lopair(phy,
                                radio_attenuation,
                                baseband_attenuation);
      }
      return bcm43xx_get_lopair(phy, dict[radio_attenuation], baseband_attenuation);
}

static inline
struct bcm43xx_lopair * bcm43xx_current_lopair(struct bcm43xx_private *bcm)
{
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);

      return bcm43xx_find_lopair(bcm,
                           radio->baseband_atten,
                           radio->radio_atten,
                           radio->txctl1);
}

/* Adjust B/G LO */
void bcm43xx_phy_lo_adjust(struct bcm43xx_private *bcm, int fixed)
{
      struct bcm43xx_lopair *pair;

      if (fixed) {
            /* Use fixed values. Only for initialization. */
            pair = bcm43xx_find_lopair(bcm, 2, 3, 0);
      } else
            pair = bcm43xx_current_lopair(bcm);
      bcm43xx_lo_write(bcm, pair);
}

static void bcm43xx_phy_lo_g_measure_txctl2(struct bcm43xx_private *bcm)
{
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      u16 txctl2 = 0, i;
      u32 smallest, tmp;

      bcm43xx_radio_write16(bcm, 0x0052, 0x0000);
      udelay(10);
      smallest = bcm43xx_phy_lo_g_singledeviation(bcm, 0);
      for (i = 0; i < 16; i++) {
            bcm43xx_radio_write16(bcm, 0x0052, i);
            udelay(10);
            tmp = bcm43xx_phy_lo_g_singledeviation(bcm, 0);
            if (tmp < smallest) {
                  smallest = tmp;
                  txctl2 = i;
            }
      }
      radio->txctl2 = txctl2;
}

static
void bcm43xx_phy_lo_g_state(struct bcm43xx_private *bcm,
                      const struct bcm43xx_lopair *in_pair,
                      struct bcm43xx_lopair *out_pair,
                      u16 r27)
{
      static const struct bcm43xx_lopair transitions[8] = {
            { .high =  1,  .low =  1, },
            { .high =  1,  .low =  0, },
            { .high =  1,  .low = -1, },
            { .high =  0,  .low = -1, },
            { .high = -1,  .low = -1, },
            { .high = -1,  .low =  0, },
            { .high = -1,  .low =  1, },
            { .high =  0,  .low =  1, },
      };
      struct bcm43xx_lopair lowest_transition = {
            .high = in_pair->high,
            .low = in_pair->low,
      };
      struct bcm43xx_lopair tmp_pair;
      struct bcm43xx_lopair transition;
      int i = 12;
      int state = 0;
      int found_lower;
      int j, begin, end;
      u32 lowest_deviation;
      u32 tmp;

      /* Note that in_pair and out_pair can point to the same pair. Be careful. */

      bcm43xx_lo_write(bcm, &lowest_transition);
      lowest_deviation = bcm43xx_phy_lo_g_singledeviation(bcm, r27);
      do {
            found_lower = 0;
            assert(state >= 0 && state <= 8);
            if (state == 0) {
                  begin = 1;
                  end = 8;
            } else if (state % 2 == 0) {
                  begin = state - 1;
                  end = state + 1;
            } else {
                  begin = state - 2;
                  end = state + 2;
            }
            if (begin < 1)
                  begin += 8;
            if (end > 8)
                  end -= 8;

            j = begin;
            tmp_pair.high = lowest_transition.high;
            tmp_pair.low = lowest_transition.low;
            while (1) {
                  assert(j >= 1 && j <= 8);
                  transition.high = tmp_pair.high + transitions[j - 1].high;
                  transition.low = tmp_pair.low + transitions[j - 1].low;
                  if ((abs(transition.low) < 9) && (abs(transition.high) < 9)) {
                        bcm43xx_lo_write(bcm, &transition);
                        tmp = bcm43xx_phy_lo_g_singledeviation(bcm, r27);
                        if (tmp < lowest_deviation) {
                              lowest_deviation = tmp;
                              state = j;
                              found_lower = 1;

                              lowest_transition.high = transition.high;
                              lowest_transition.low = transition.low;
                        }
                  }
                  if (j == end)
                        break;
                  if (j == 8)
                        j = 1;
                  else
                        j++;
            }
      } while (i-- && found_lower);

      out_pair->high = lowest_transition.high;
      out_pair->low = lowest_transition.low;
}

/* Set the baseband attenuation value on chip. */
void bcm43xx_phy_set_baseband_attenuation(struct bcm43xx_private *bcm,
                                u16 baseband_attenuation)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      u16 value;

      if (phy->analog == 0) {
            value = (bcm43xx_read16(bcm, 0x03E6) & 0xFFF0);
            value |= (baseband_attenuation & 0x000F);
            bcm43xx_write16(bcm, 0x03E6, value);
            return;
      }

      if (phy->analog > 1) {
            value = bcm43xx_phy_read(bcm, 0x0060) & ~0x003C;
            value |= (baseband_attenuation << 2) & 0x003C;
      } else {
            value = bcm43xx_phy_read(bcm, 0x0060) & ~0x0078;
            value |= (baseband_attenuation << 3) & 0x0078;
      }
      bcm43xx_phy_write(bcm, 0x0060, value);
}

/* http://bcm-specs.sipsolutions.net/LocalOscillator/Measure */
void bcm43xx_phy_lo_g_measure(struct bcm43xx_private *bcm)
{
      static const u8 pairorder[10] = { 3, 1, 5, 7, 9, 2, 0, 4, 6, 8 };
      const int is_initializing = (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZING);
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      u16 h, i, oldi = 0, j;
      struct bcm43xx_lopair control;
      struct bcm43xx_lopair *tmp_control;
      u16 tmp;
      u16 regstack[16] = { 0 };
      u8 oldchannel;

      //XXX: What are these?
      u8 r27 = 0, r31;

      oldchannel = radio->channel;
      /* Setup */
      if (phy->connected) {
            regstack[0] = bcm43xx_phy_read(bcm, BCM43xx_PHY_G_CRS);
            regstack[1] = bcm43xx_phy_read(bcm, 0x0802);
            bcm43xx_phy_write(bcm, BCM43xx_PHY_G_CRS, regstack[0] & 0x7FFF);
            bcm43xx_phy_write(bcm, 0x0802, regstack[1] & 0xFFFC);
      }
      regstack[3] = bcm43xx_read16(bcm, 0x03E2);
      bcm43xx_write16(bcm, 0x03E2, regstack[3] | 0x8000);
      regstack[4] = bcm43xx_read16(bcm, BCM43xx_MMIO_CHANNEL_EXT);
      regstack[5] = bcm43xx_phy_read(bcm, 0x15);
      regstack[6] = bcm43xx_phy_read(bcm, 0x2A);
      regstack[7] = bcm43xx_phy_read(bcm, 0x35);
      regstack[8] = bcm43xx_phy_read(bcm, 0x60);
      regstack[9] = bcm43xx_radio_read16(bcm, 0x43);
      regstack[10] = bcm43xx_radio_read16(bcm, 0x7A);
      regstack[11] = bcm43xx_radio_read16(bcm, 0x52);
      if (phy->connected) {
            regstack[12] = bcm43xx_phy_read(bcm, 0x0811);
            regstack[13] = bcm43xx_phy_read(bcm, 0x0812);
            regstack[14] = bcm43xx_phy_read(bcm, 0x0814);
            regstack[15] = bcm43xx_phy_read(bcm, 0x0815);
      }
      bcm43xx_radio_selectchannel(bcm, 6, 0);
      if (phy->connected) {
            bcm43xx_phy_write(bcm, BCM43xx_PHY_G_CRS, regstack[0] & 0x7FFF);
            bcm43xx_phy_write(bcm, 0x0802, regstack[1] & 0xFFFC);
            bcm43xx_dummy_transmission(bcm);
      }
      bcm43xx_radio_write16(bcm, 0x0043, 0x0006);

      bcm43xx_phy_set_baseband_attenuation(bcm, 2);

      bcm43xx_write16(bcm, BCM43xx_MMIO_CHANNEL_EXT, 0x0000);
      bcm43xx_phy_write(bcm, 0x002E, 0x007F);
      bcm43xx_phy_write(bcm, 0x080F, 0x0078);
      bcm43xx_phy_write(bcm, 0x0035, regstack[7] & ~(1 << 7));
      bcm43xx_radio_write16(bcm, 0x007A, regstack[10] & 0xFFF0);
      bcm43xx_phy_write(bcm, 0x002B, 0x0203);
      bcm43xx_phy_write(bcm, 0x002A, 0x08A3);
      if (phy->connected) {
            bcm43xx_phy_write(bcm, 0x0814, regstack[14] | 0x0003);
            bcm43xx_phy_write(bcm, 0x0815, regstack[15] & 0xFFFC);
            bcm43xx_phy_write(bcm, 0x0811, 0x01B3);
            bcm43xx_phy_write(bcm, 0x0812, 0x00B2);
      }
      if (is_initializing)
            bcm43xx_phy_lo_g_measure_txctl2(bcm);
      bcm43xx_phy_write(bcm, 0x080F, 0x8078);

      /* Measure */
      control.low = 0;
      control.high = 0;
      for (h = 0; h < 10; h++) {
            /* Loop over each possible RadioAttenuation (0-9) */
            i = pairorder[h];
            if (is_initializing) {
                  if (i == 3) {
                        control.low = 0;
                        control.high = 0;
                  } else if (((i % 2 == 1) && (oldi % 2 == 1)) ||
                          ((i % 2 == 0) && (oldi % 2 == 0))) {
                        tmp_control = bcm43xx_get_lopair(phy, oldi, 0);
                        memcpy(&control, tmp_control, sizeof(control));
                  } else {
                        tmp_control = bcm43xx_get_lopair(phy, 3, 0);
                        memcpy(&control, tmp_control, sizeof(control));
                  }
            }
            /* Loop over each possible BasebandAttenuation/2 */
            for (j = 0; j < 4; j++) {
                  if (is_initializing) {
                        tmp = i * 2 + j;
                        r27 = 0;
                        r31 = 0;
                        if (tmp > 14) {
                              r31 = 1;
                              if (tmp > 17)
                                    r27 = 1;
                              if (tmp > 19)
                                    r27 = 2;
                        }
                  } else {
                        tmp_control = bcm43xx_get_lopair(phy, i, j * 2);
                        if (!tmp_control->used)
                              continue;
                        memcpy(&control, tmp_control, sizeof(control));
                        r27 = 3;
                        r31 = 0;
                  }
                  bcm43xx_radio_write16(bcm, 0x43, i);
                  bcm43xx_radio_write16(bcm, 0x52, radio->txctl2);
                  udelay(10);
                  bcm43xx_voluntary_preempt();

                  bcm43xx_phy_set_baseband_attenuation(bcm, j * 2);

                  tmp = (regstack[10] & 0xFFF0);
                  if (r31)
                        tmp |= 0x0008;
                  bcm43xx_radio_write16(bcm, 0x007A, tmp);

                  tmp_control = bcm43xx_get_lopair(phy, i, j * 2);
                  bcm43xx_phy_lo_g_state(bcm, &control, tmp_control, r27);
            }
            oldi = i;
      }
      /* Loop over each possible RadioAttenuation (10-13) */
      for (i = 10; i < 14; i++) {
            /* Loop over each possible BasebandAttenuation/2 */
            for (j = 0; j < 4; j++) {
                  if (is_initializing) {
                        tmp_control = bcm43xx_get_lopair(phy, i - 9, j * 2);
                        memcpy(&control, tmp_control, sizeof(control));
                        tmp = (i - 9) * 2 + j - 5;//FIXME: This is wrong, as the following if statement can never trigger.
                        r27 = 0;
                        r31 = 0;
                        if (tmp > 14) {
                              r31 = 1;
                              if (tmp > 17)
                                    r27 = 1;
                              if (tmp > 19)
                                    r27 = 2;
                        }
                  } else {
                        tmp_control = bcm43xx_get_lopair(phy, i - 9, j * 2);
                        if (!tmp_control->used)
                              continue;
                        memcpy(&control, tmp_control, sizeof(control));
                        r27 = 3;
                        r31 = 0;
                  }
                  bcm43xx_radio_write16(bcm, 0x43, i - 9);
                  bcm43xx_radio_write16(bcm, 0x52,
                                    radio->txctl2
                                    | (3/*txctl1*/ << 4));//FIXME: shouldn't txctl1 be zero here and 3 in the loop above?
                  udelay(10);
                  bcm43xx_voluntary_preempt();

                  bcm43xx_phy_set_baseband_attenuation(bcm, j * 2);

                  tmp = (regstack[10] & 0xFFF0);
                  if (r31)
                        tmp |= 0x0008;
                  bcm43xx_radio_write16(bcm, 0x7A, tmp);

                  tmp_control = bcm43xx_get_lopair(phy, i, j * 2);
                  bcm43xx_phy_lo_g_state(bcm, &control, tmp_control, r27);
            }
      }

      /* Restoration */
      if (phy->connected) {
            bcm43xx_phy_write(bcm, 0x0015, 0xE300);
            bcm43xx_phy_write(bcm, 0x0812, (r27 << 8) | 0xA0);
            udelay(5);
            bcm43xx_phy_write(bcm, 0x0812, (r27 << 8) | 0xA2);
            udelay(2);
            bcm43xx_phy_write(bcm, 0x0812, (r27 << 8) | 0xA3);
            bcm43xx_voluntary_preempt();
      } else
            bcm43xx_phy_write(bcm, 0x0015, r27 | 0xEFA0);
      bcm43xx_phy_lo_adjust(bcm, is_initializing);
      bcm43xx_phy_write(bcm, 0x002E, 0x807F);
      if (phy->connected)
            bcm43xx_phy_write(bcm, 0x002F, 0x0202);
      else
            bcm43xx_phy_write(bcm, 0x002F, 0x0101);
      bcm43xx_write16(bcm, BCM43xx_MMIO_CHANNEL_EXT, regstack[4]);
      bcm43xx_phy_write(bcm, 0x0015, regstack[5]);
      bcm43xx_phy_write(bcm, 0x002A, regstack[6]);
      bcm43xx_phy_write(bcm, 0x0035, regstack[7]);
      bcm43xx_phy_write(bcm, 0x0060, regstack[8]);
      bcm43xx_radio_write16(bcm, 0x0043, regstack[9]);
      bcm43xx_radio_write16(bcm, 0x007A, regstack[10]);
      regstack[11] &= 0x00F0;
      regstack[11] |= (bcm43xx_radio_read16(bcm, 0x52) & 0x000F);
      bcm43xx_radio_write16(bcm, 0x52, regstack[11]);
      bcm43xx_write16(bcm, 0x03E2, regstack[3]);
      if (phy->connected) {
            bcm43xx_phy_write(bcm, 0x0811, regstack[12]);
            bcm43xx_phy_write(bcm, 0x0812, regstack[13]);
            bcm43xx_phy_write(bcm, 0x0814, regstack[14]);
            bcm43xx_phy_write(bcm, 0x0815, regstack[15]);
            bcm43xx_phy_write(bcm, BCM43xx_PHY_G_CRS, regstack[0]);
            bcm43xx_phy_write(bcm, 0x0802, regstack[1]);
      }
      bcm43xx_radio_selectchannel(bcm, oldchannel, 1);

#ifdef CONFIG_BCM43XX_DEBUG
      {
            /* Sanity check for all lopairs. */
            for (i = 0; i < BCM43xx_LO_COUNT; i++) {
                  tmp_control = phy->_lo_pairs + i;
                  if (tmp_control->low < -8 || tmp_control->low > 8 ||
                      tmp_control->high < -8 || tmp_control->high > 8) {
                        printk(KERN_WARNING PFX
                               "WARNING: Invalid LOpair (low: %d, high: %d, index: %d)\n",
                               tmp_control->low, tmp_control->high, i);
                  }
            }
      }
#endif /* CONFIG_BCM43XX_DEBUG */
}

static
void bcm43xx_phy_lo_mark_current_used(struct bcm43xx_private *bcm)
{
      struct bcm43xx_lopair *pair;

      pair = bcm43xx_current_lopair(bcm);
      pair->used = 1;
}

void bcm43xx_phy_lo_mark_all_unused(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      struct bcm43xx_lopair *pair;
      int i;

      for (i = 0; i < BCM43xx_LO_COUNT; i++) {
            pair = phy->_lo_pairs + i;
            pair->used = 0;
      }
}

/* http://bcm-specs.sipsolutions.net/EstimatePowerOut
 * This function converts a TSSI value to dBm in Q5.2
 */
static s8 bcm43xx_phy_estimate_power_out(struct bcm43xx_private *bcm, s8 tssi)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      s8 dbm = 0;
      s32 tmp;

      tmp = phy->idle_tssi;
      tmp += tssi;
      tmp -= phy->savedpctlreg;

      switch (phy->type) {
            case BCM43xx_PHYTYPE_A:
                  tmp += 0x80;
                  tmp = limit_value(tmp, 0x00, 0xFF);
                  dbm = phy->tssi2dbm[tmp];
                  TODO(); //TODO: There's a FIXME on the specs
                  break;
            case BCM43xx_PHYTYPE_B:
            case BCM43xx_PHYTYPE_G:
                  tmp = limit_value(tmp, 0x00, 0x3F);
                  dbm = phy->tssi2dbm[tmp];
                  break;
            default:
                  assert(0);
      }

      return dbm;
}

/* http://bcm-specs.sipsolutions.net/RecalculateTransmissionPower */
void bcm43xx_phy_xmitpower(struct bcm43xx_private *bcm)
{
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      
      if (phy->savedpctlreg == 0xFFFF)
            return;
      if ((bcm->board_type == 0x0416) &&
          (bcm->board_vendor == PCI_VENDOR_ID_BROADCOM))
            return;
      
      switch (phy->type) {
      case BCM43xx_PHYTYPE_A: {

            TODO(); //TODO: Nothing for A PHYs yet :-/

            break;
      }
      case BCM43xx_PHYTYPE_B:
      case BCM43xx_PHYTYPE_G: {
            u16 tmp;
            u16 txpower;
            s8 v0, v1, v2, v3;
            s8 average;
            u8 max_pwr;
            s16 desired_pwr, estimated_pwr, pwr_adjust;
            s16 radio_att_delta, baseband_att_delta;
            s16 radio_attenuation, baseband_attenuation;
            unsigned long phylock_flags;

            tmp = bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED, 0x0058);
            v0 = (s8)(tmp & 0x00FF);
            v1 = (s8)((tmp & 0xFF00) >> 8);
            tmp = bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED, 0x005A);
            v2 = (s8)(tmp & 0x00FF);
            v3 = (s8)((tmp & 0xFF00) >> 8);
            tmp = 0;

            if (v0 == 0x7F || v1 == 0x7F || v2 == 0x7F || v3 == 0x7F) {
                  tmp = bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED, 0x0070);
                  v0 = (s8)(tmp & 0x00FF);
                  v1 = (s8)((tmp & 0xFF00) >> 8);
                  tmp = bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED, 0x0072);
                  v2 = (s8)(tmp & 0x00FF);
                  v3 = (s8)((tmp & 0xFF00) >> 8);
                  if (v0 == 0x7F || v1 == 0x7F || v2 == 0x7F || v3 == 0x7F)
                        return;
                  v0 = (v0 + 0x20) & 0x3F;
                  v1 = (v1 + 0x20) & 0x3F;
                  v2 = (v2 + 0x20) & 0x3F;
                  v3 = (v3 + 0x20) & 0x3F;
                  tmp = 1;
            }
            bcm43xx_radio_clear_tssi(bcm);

            average = (v0 + v1 + v2 + v3 + 2) / 4;

            if (tmp && (bcm43xx_shm_read16(bcm, BCM43xx_SHM_SHARED, 0x005E) & 0x8))
                  average -= 13;

            estimated_pwr = bcm43xx_phy_estimate_power_out(bcm, average);

            max_pwr = bcm->sprom.maxpower_bgphy;

            if ((bcm->sprom.boardflags & BCM43xx_BFL_PACTRL) &&
                (phy->type == BCM43xx_PHYTYPE_G))
                  max_pwr -= 0x3;

            /*TODO:
            max_pwr = min(REG - bcm->sprom.antennagain_bgphy - 0x6, max_pwr)
                  where REG is the max power as per the regulatory domain
            */

            desired_pwr = limit_value(radio->txpower_desired, 0, max_pwr);
            /* Check if we need to adjust the current power. */
            pwr_adjust = desired_pwr - estimated_pwr;
            radio_att_delta = -(pwr_adjust + 7) >> 3;
            baseband_att_delta = -(pwr_adjust >> 1) - (4 * radio_att_delta);
            if ((radio_att_delta == 0) && (baseband_att_delta == 0)) {
                  bcm43xx_phy_lo_mark_current_used(bcm);
                  return;
            }

            /* Calculate the new attenuation values. */
            baseband_attenuation = radio->baseband_atten;
            baseband_attenuation += baseband_att_delta;
            radio_attenuation = radio->radio_atten;
            radio_attenuation += radio_att_delta;

            /* Get baseband and radio attenuation values into their permitted ranges.
             * baseband 0-11, radio 0-9.
             * Radio attenuation affects power level 4 times as much as baseband.
             */
            if (radio_attenuation < 0) {
                  baseband_attenuation -= (4 * -radio_attenuation);
                  radio_attenuation = 0;
            } else if (radio_attenuation > 9) {
                  baseband_attenuation += (4 * (radio_attenuation - 9));
                  radio_attenuation = 9;
            } else {
                  while (baseband_attenuation < 0 && radio_attenuation > 0) {
                        baseband_attenuation += 4;
                        radio_attenuation--;
                  }
                  while (baseband_attenuation > 11 && radio_attenuation < 9) {
                        baseband_attenuation -= 4;
                        radio_attenuation++;
                  }
            }
            baseband_attenuation = limit_value(baseband_attenuation, 0, 11);

            txpower = radio->txctl1;
            if ((radio->version == 0x2050) && (radio->revision == 2)) {
                  if (radio_attenuation <= 1) {
                        if (txpower == 0) {
                              txpower = 3;
                              radio_attenuation += 2;
                              baseband_attenuation += 2;
                        } else if (bcm->sprom.boardflags & BCM43xx_BFL_PACTRL) {
                              baseband_attenuation += 4 * (radio_attenuation - 2);
                              radio_attenuation = 2;
                        }
                  } else if (radio_attenuation > 4 && txpower != 0) {
                        txpower = 0;
                        if (baseband_attenuation < 3) {
                              radio_attenuation -= 3;
                              baseband_attenuation += 2;
                        } else {
                              radio_attenuation -= 2;
                              baseband_attenuation -= 2;
                        }
                  }
            }
            radio->txctl1 = txpower;
            baseband_attenuation = limit_value(baseband_attenuation, 0, 11);
            radio_attenuation = limit_value(radio_attenuation, 0, 9);

            bcm43xx_phy_lock(bcm, phylock_flags);
            bcm43xx_radio_lock(bcm);
            bcm43xx_radio_set_txpower_bg(bcm, baseband_attenuation,
                                   radio_attenuation, txpower);
            bcm43xx_phy_lo_mark_current_used(bcm);
            bcm43xx_radio_unlock(bcm);
            bcm43xx_phy_unlock(bcm, phylock_flags);
            break;
      }
      default:
            assert(0);
      }
}

static inline
s32 bcm43xx_tssi2dbm_ad(s32 num, s32 den)
{
      if (num < 0)
            return num/den;
      else
            return (num+den/2)/den;
}

static inline
s8 bcm43xx_tssi2dbm_entry(s8 entry [], u8 index, s16 pab0, s16 pab1, s16 pab2)
{
      s32 m1, m2, f = 256, q, delta;
      s8 i = 0;
      
      m1 = bcm43xx_tssi2dbm_ad(16 * pab0 + index * pab1, 32);
      m2 = max(bcm43xx_tssi2dbm_ad(32768 + index * pab2, 256), 1);
      do {
            if (i > 15)
                  return -EINVAL;
            q = bcm43xx_tssi2dbm_ad(f * 4096 -
                              bcm43xx_tssi2dbm_ad(m2 * f, 16) * f, 2048);
            delta = abs(q - f);
            f = q;
            i++;
      } while (delta >= 2);
      entry[index] = limit_value(bcm43xx_tssi2dbm_ad(m1 * f, 8192), -127, 128);
      return 0;
}

/* http://bcm-specs.sipsolutions.net/TSSI_to_DBM_Table */
int bcm43xx_phy_init_tssi2dbm_table(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
      s16 pab0, pab1, pab2;
      u8 idx;
      s8 *dyn_tssi2dbm;
      
      if (phy->type == BCM43xx_PHYTYPE_A) {
            pab0 = (s16)(bcm->sprom.pa1b0);
            pab1 = (s16)(bcm->sprom.pa1b1);
            pab2 = (s16)(bcm->sprom.pa1b2);
      } else {
            pab0 = (s16)(bcm->sprom.pa0b0);
            pab1 = (s16)(bcm->sprom.pa0b1);
            pab2 = (s16)(bcm->sprom.pa0b2);
      }

      if ((bcm->chip_id == 0x4301) && (radio->version != 0x2050)) {
            phy->idle_tssi = 0x34;
            phy->tssi2dbm = bcm43xx_tssi2dbm_b_table;
            return 0;
      }

      if (pab0 != 0 && pab1 != 0 && pab2 != 0 &&
          pab0 != -1 && pab1 != -1 && pab2 != -1) {
            /* The pabX values are set in SPROM. Use them. */
            if (phy->type == BCM43xx_PHYTYPE_A) {
                  if ((s8)bcm->sprom.idle_tssi_tgt_aphy != 0 &&
                      (s8)bcm->sprom.idle_tssi_tgt_aphy != -1)
                        phy->idle_tssi = (s8)(bcm->sprom.idle_tssi_tgt_aphy);
                  else
                        phy->idle_tssi = 62;
            } else {
                  if ((s8)bcm->sprom.idle_tssi_tgt_bgphy != 0 &&
                      (s8)bcm->sprom.idle_tssi_tgt_bgphy != -1)
                        phy->idle_tssi = (s8)(bcm->sprom.idle_tssi_tgt_bgphy);
                  else
                        phy->idle_tssi = 62;
            }
            dyn_tssi2dbm = kmalloc(64, GFP_KERNEL);
            if (dyn_tssi2dbm == NULL) {
                  printk(KERN_ERR PFX "Could not allocate memory "
                                  "for tssi2dbm table\n");
                  return -ENOMEM;
            }
            for (idx = 0; idx < 64; idx++)
                  if (bcm43xx_tssi2dbm_entry(dyn_tssi2dbm, idx, pab0, pab1, pab2)) {
                        phy->tssi2dbm = NULL;
                        printk(KERN_ERR PFX "Could not generate "
                                        "tssi2dBm table\n");
                        kfree(dyn_tssi2dbm);
                        return -ENODEV;
                  }
            phy->tssi2dbm = dyn_tssi2dbm;
            phy->dyn_tssi_tbl = 1;
      } else {
            /* pabX values not set in SPROM. */
            switch (phy->type) {
            case BCM43xx_PHYTYPE_A:
                  /* APHY needs a generated table. */
                  phy->tssi2dbm = NULL;
                  printk(KERN_ERR PFX "Could not generate tssi2dBm "
                                  "table (wrong SPROM info)!\n");
                  return -ENODEV;
            case BCM43xx_PHYTYPE_B:
                  phy->idle_tssi = 0x34;
                  phy->tssi2dbm = bcm43xx_tssi2dbm_b_table;
                  break;
            case BCM43xx_PHYTYPE_G:
                  phy->idle_tssi = 0x34;
                  phy->tssi2dbm = bcm43xx_tssi2dbm_g_table;
                  break;
            }
      }

      return 0;
}

int bcm43xx_phy_init(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      int err = -ENODEV;

      switch (phy->type) {
      case BCM43xx_PHYTYPE_A:
            if (phy->rev == 2 || phy->rev == 3) {
                  bcm43xx_phy_inita(bcm);
                  err = 0;
            }
            break;
      case BCM43xx_PHYTYPE_B:
            switch (phy->rev) {
            case 2:
                  bcm43xx_phy_initb2(bcm);
                  err = 0;
                  break;
            case 4:
                  bcm43xx_phy_initb4(bcm);
                  err = 0;
                  break;
            case 5:
                  bcm43xx_phy_initb5(bcm);
                  err = 0;
                  break;
            case 6:
                  bcm43xx_phy_initb6(bcm);
                  err = 0;
                  break;
            }
            break;
      case BCM43xx_PHYTYPE_G:
            bcm43xx_phy_initg(bcm);
            err = 0;
            break;
      }
      if (err)
            printk(KERN_WARNING PFX "Unknown PHYTYPE found!\n");

      return err;
}

void bcm43xx_phy_set_antenna_diversity(struct bcm43xx_private *bcm)
{
      struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
      u16 antennadiv;
      u16 offset;
      u16 value;
      u32 ucodeflags;

      antennadiv = phy->antenna_diversity;

      if (antennadiv == 0xFFFF)
            antennadiv = 3;
      assert(antennadiv <= 3);

      ucodeflags = bcm43xx_shm_read32(bcm, BCM43xx_SHM_SHARED,
                              BCM43xx_UCODEFLAGS_OFFSET);
      bcm43xx_shm_write32(bcm, BCM43xx_SHM_SHARED,
                      BCM43xx_UCODEFLAGS_OFFSET,
                      ucodeflags & ~BCM43xx_UCODEFLAG_AUTODIV);

      switch (phy->type) {
      case BCM43xx_PHYTYPE_A:
      case BCM43xx_PHYTYPE_G:
            if (phy->type == BCM43xx_PHYTYPE_A)
                  offset = 0x0000;
            else
                  offset = 0x0400;

            if (antennadiv == 2)
                  value = (3/*automatic*/ << 7);
            else
                  value = (antennadiv << 7);
            bcm43xx_phy_write(bcm, offset + 1,
                          (bcm43xx_phy_read(bcm, offset + 1)
                           & 0x7E7F) | value);

            if (antennadiv >= 2) {
                  if (antennadiv == 2)
                        value = (antennadiv << 7);
                  else
                        value = (0/*force0*/ << 7);
                  bcm43xx_phy_write(bcm, offset + 0x2B,
                                (bcm43xx_phy_read(bcm, offset + 0x2B)
                                 & 0xFEFF) | value);
            }

            if (phy->type == BCM43xx_PHYTYPE_G) {
                  if (antennadiv >= 2)
                        bcm43xx_phy_write(bcm, 0x048C,
                                      bcm43xx_phy_read(bcm, 0x048C)
                                       | 0x2000);
                  else
                        bcm43xx_phy_write(bcm, 0x048C,
                                      bcm43xx_phy_read(bcm, 0x048C)
                                       & ~0x2000);
                  if (phy->rev >= 2) {
                        bcm43xx_phy_write(bcm, 0x0461,
                                      bcm43xx_phy_read(bcm, 0x0461)
                                       | 0x0010);
                        bcm43xx_phy_write(bcm, 0x04AD,
                                      (bcm43xx_phy_read(bcm, 0x04AD)
                                       & 0x00FF) | 0x0015);
                        if (phy->rev == 2)
                              bcm43xx_phy_write(bcm, 0x0427, 0x0008);
                        else
                              bcm43xx_phy_write(bcm, 0x0427,
                                    (bcm43xx_phy_read(bcm, 0x0427)
                                     & 0x00FF) | 0x0008);
                  }
                  else if (phy->rev >= 6)
                        bcm43xx_phy_write(bcm, 0x049B, 0x00DC);
            } else {
                  if (phy->rev < 3)
                        bcm43xx_phy_write(bcm, 0x002B,
                                      (bcm43xx_phy_read(bcm, 0x002B)
                                       & 0x00FF) | 0x0024);
                  else {
                        bcm43xx_phy_write(bcm, 0x0061,
                                      bcm43xx_phy_read(bcm, 0x0061)
                                       | 0x0010);
                        if (phy->rev == 3) {
                              bcm43xx_phy_write(bcm, 0x0093, 0x001D);
                              bcm43xx_phy_write(bcm, 0x0027, 0x0008);
                        } else {
                              bcm43xx_phy_write(bcm, 0x0093, 0x003A);
                              bcm43xx_phy_write(bcm, 0x0027,
                                    (bcm43xx_phy_read(bcm, 0x0027)
                                     & 0x00FF) | 0x0008);
                        }
                  }
            }
            break;
      case BCM43xx_PHYTYPE_B:
            if (bcm->current_core->rev == 2)
                  value = (3/*automatic*/ << 7);
            else
                  value = (antennadiv << 7);
            bcm43xx_phy_write(bcm, 0x03E2,
                          (bcm43xx_phy_read(bcm, 0x03E2)
                           & 0xFE7F) | value);
            break;
      default:
            assert(0);
      }

      if (antennadiv >= 2) {
            ucodeflags = bcm43xx_shm_read32(bcm, BCM43xx_SHM_SHARED,
                                    BCM43xx_UCODEFLAGS_OFFSET);
            bcm43xx_shm_write32(bcm, BCM43xx_SHM_SHARED,
                            BCM43xx_UCODEFLAGS_OFFSET,
                            ucodeflags | BCM43xx_UCODEFLAG_AUTODIV);
      }

      phy->antenna_diversity = antennadiv;
}

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