/* Broadcom B43 wireless driver Common PHY routines Copyright (c) 2005 Martin Langer , Copyright (c) 2005-2007 Stefano Brivio Copyright (c) 2005-2008 Michael Buesch Copyright (c) 2005, 2006 Danny van Dyk Copyright (c) 2005, 2006 Andreas Jaggi 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 "phy_common.h" #include "phy_g.h" #include "phy_a.h" #include "nphy.h" #include "b43.h" #include "main.h" int b43_phy_operations_setup(struct b43_wldev *dev) { struct b43_phy *phy = &(dev->phy); int err; phy->ops = NULL; switch (phy->type) { case B43_PHYTYPE_A: phy->ops = &b43_phyops_a; break; case B43_PHYTYPE_G: phy->ops = &b43_phyops_g; break; case B43_PHYTYPE_N: #ifdef CONFIG_B43_NPHY phy->ops = &b43_phyops_n; #endif break; case B43_PHYTYPE_LP: /* FIXME: Not yet */ break; } if (B43_WARN_ON(!phy->ops)) return -ENODEV; err = phy->ops->allocate(dev); if (err) phy->ops = NULL; return err; } int b43_phy_init(struct b43_wldev *dev) { struct b43_phy *phy = &dev->phy; const struct b43_phy_operations *ops = phy->ops; int err; phy->channel = ops->get_default_chan(dev); ops->software_rfkill(dev, RFKILL_STATE_UNBLOCKED); err = ops->init(dev); if (err) { b43err(dev->wl, "PHY init failed\n"); goto err_block_rf; } /* Make sure to switch hardware and firmware (SHM) to * the default channel. */ err = b43_switch_channel(dev, ops->get_default_chan(dev)); if (err) { b43err(dev->wl, "PHY init: Channel switch to default failed\n"); goto err_phy_exit; } return 0; err_phy_exit: if (ops->exit) ops->exit(dev); err_block_rf: ops->software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED); return err; } void b43_phy_exit(struct b43_wldev *dev) { const struct b43_phy_operations *ops = dev->phy.ops; ops->software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED); if (ops->exit) ops->exit(dev); } bool b43_has_hardware_pctl(struct b43_wldev *dev) { if (!dev->phy.hardware_power_control) return 0; if (!dev->phy.ops->supports_hwpctl) return 0; return dev->phy.ops->supports_hwpctl(dev); } void b43_radio_lock(struct b43_wldev *dev) { u32 macctl; macctl = b43_read32(dev, B43_MMIO_MACCTL); B43_WARN_ON(macctl & B43_MACCTL_RADIOLOCK); macctl |= B43_MACCTL_RADIOLOCK; b43_write32(dev, B43_MMIO_MACCTL, macctl); /* Commit the write and wait for the device * to exit any radio register access. */ b43_read32(dev, B43_MMIO_MACCTL); udelay(10); } void b43_radio_unlock(struct b43_wldev *dev) { u32 macctl; /* Commit any write */ b43_read16(dev, B43_MMIO_PHY_VER); /* unlock */ macctl = b43_read32(dev, B43_MMIO_MACCTL); B43_WARN_ON(!(macctl & B43_MACCTL_RADIOLOCK)); macctl &= ~B43_MACCTL_RADIOLOCK; b43_write32(dev, B43_MMIO_MACCTL, macctl); } void b43_phy_lock(struct b43_wldev *dev) { #if B43_DEBUG B43_WARN_ON(dev->phy.phy_locked); dev->phy.phy_locked = 1; #endif B43_WARN_ON(dev->dev->id.revision < 3); if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) b43_power_saving_ctl_bits(dev, B43_PS_AWAKE); } void b43_phy_unlock(struct b43_wldev *dev) { #if B43_DEBUG B43_WARN_ON(!dev->phy.phy_locked); dev->phy.phy_locked = 0; #endif B43_WARN_ON(dev->dev->id.revision < 3); if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) b43_power_saving_ctl_bits(dev, 0); } u16 b43_radio_read(struct b43_wldev *dev, u16 reg) { return dev->phy.ops->radio_read(dev, reg); } void b43_radio_write(struct b43_wldev *dev, u16 reg, u16 value) { dev->phy.ops->radio_write(dev, reg, value); } void b43_radio_mask(struct b43_wldev *dev, u16 offset, u16 mask) { b43_radio_write16(dev, offset, b43_radio_read16(dev, offset) & mask); } void b43_radio_set(struct b43_wldev *dev, u16 offset, u16 set) { b43_radio_write16(dev, offset, b43_radio_read16(dev, offset) | set); } void b43_radio_maskset(struct b43_wldev *dev, u16 offset, u16 mask, u16 set) { b43_radio_write16(dev, offset, (b43_radio_read16(dev, offset) & mask) | set); } u16 b43_phy_read(struct b43_wldev *dev, u16 reg) { return dev->phy.ops->phy_read(dev, reg); } void b43_phy_write(struct b43_wldev *dev, u16 reg, u16 value) { dev->phy.ops->phy_write(dev, reg, value); } void b43_phy_mask(struct b43_wldev *dev, u16 offset, u16 mask) { b43_phy_write(dev, offset, b43_phy_read(dev, offset) & mask); } void b43_phy_set(struct b43_wldev *dev, u16 offset, u16 set) { b43_phy_write(dev, offset, b43_phy_read(dev, offset) | set); } void b43_phy_maskset(struct b43_wldev *dev, u16 offset, u16 mask, u16 set) { b43_phy_write(dev, offset, (b43_phy_read(dev, offset) & mask) | set); } int b43_switch_channel(struct b43_wldev *dev, unsigned int new_channel) { struct b43_phy *phy = &(dev->phy); u16 channelcookie, savedcookie; int err; if (new_channel == B43_DEFAULT_CHANNEL) new_channel = phy->ops->get_default_chan(dev); /* First we set the channel radio code to prevent the * firmware from sending ghost packets. */ channelcookie = new_channel; if (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ) channelcookie |= 0x100; //FIXME set 40Mhz flag if required savedcookie = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_CHAN); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_CHAN, channelcookie); /* Now try to switch the PHY hardware channel. */ err = phy->ops->switch_channel(dev, new_channel); if (err) goto err_restore_cookie; dev->phy.channel = new_channel; /* Wait for the radio to tune to the channel and stabilize. */ msleep(8); return 0; err_restore_cookie: b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_CHAN, savedcookie); return err; } void b43_software_rfkill(struct b43_wldev *dev, enum rfkill_state state) { struct b43_phy *phy = &dev->phy; if (state == RFKILL_STATE_HARD_BLOCKED) { /* We cannot hardware-block the device */ state = RFKILL_STATE_SOFT_BLOCKED; } phy->ops->software_rfkill(dev, state); phy->radio_on = (state == RFKILL_STATE_UNBLOCKED); }